Updating prebuilts and/or headers

c2b683c77f90fbca8b8c2e0b59efee45db468369 - nvbufsurface.h
83e21353d1fe20cba4bd630c3b41c1615b8268ed - nvbuf_utils.h
15a81528f7535e2adbd92f5caa188e31859f02a4 - gst-plugins-nv-video-sinks/Makefile
7ef56486c9e6b3e354473a2959d274517dd709da - gst-plugins-nv-video-sinks/gstnvvideosinks.c
9825d8a113dbf7dd16f791ff1ca66f2de3047b22 - gst-plugins-nv-video-sinks/LICENSE.libgstnvvideosinks
1421743380a9eb4d86e41ff625ed2d24b9ecba3f - gst-plugins-nv-video-sinks/nv3dsink/gstnv3dsink.c
9b7125a2d7ebe2ea647c43d2eb43e8d04cd16c47 - gst-plugins-nv-video-sinks/nv3dsink/gstnv3dsink.h
5e13200e9cba5f45d74cf6899dd3356d5f5d1c8e - gst-plugins-nv-video-sinks/common/context.h
ad360a668f0f494ebd2bb630c3faaf93078c6e0d - gst-plugins-nv-video-sinks/common/window.c
72f9a4b823c4162c9f22cedb7c1cb1764d06fcb6 - gst-plugins-nv-video-sinks/common/renderer.h
fcb1b73054a1c8ff8ce614878ee46880273656f4 - gst-plugins-nv-video-sinks/common/renderer.c
440e5cf93ac15ddd81f1b702441910eeb1f4abbf - gst-plugins-nv-video-sinks/common/context.c
d48e1dae85e3c6a0ba7623be7ee306b8e1ef6695 - gst-plugins-nv-video-sinks/common/gstnvvideofwd.h
a0debde9b0fd5bc6ac9c5fac7f1a14745a2b0617 - gst-plugins-nv-video-sinks/common/display.c
96b0b4d38692a0aecf70944749684ac938ff192f - gst-plugins-nv-video-sinks/common/display.h
6e77d54ffc5d1a49d5bad768cdf5cfadf458f1f7 - gst-plugins-nv-video-sinks/common/window.h
638b0da4ea65d02818289e89bc1d635ddbcdaec5 - gst-plugins-nv-video-sinks/common/x11/window_x11.h
d692399c6d94dbc7814770b08baf9271ed97f8e0 - gst-plugins-nv-video-sinks/common/x11/display_x11.h
b3f1b67cae0b4643f6a676b362ceaa61abc9c40f - gst-plugins-nv-video-sinks/common/x11/display_x11.c
c98945083e215dff26507c1e10b0ebf62a2c6fb7 - gst-plugins-nv-video-sinks/common/x11/window_x11.c
f528404a796de5a23dab281588feb72f42343e59 - gst-plugins-nv-video-sinks/common/renderer/renderer_gl.h
707a36267f329bb22afdd19b947be5a99478ec7a - gst-plugins-nv-video-sinks/common/renderer/renderer_gl.c
e776cb49509ce1a1c7aa0d6fd0c6bbdab87c014f - gst-plugins-nv-video-sinks/common/egl/context_egl.c
536a072a8ef84b3c91307777f88121fb88df2c4f - gst-plugins-nv-video-sinks/common/egl/context_egl.h

Change-Id: I97b524fcb3b8e5d71c2ed54408c05dd82829e97c

commitFile.txt

@@ -0,0 +1,26 @@
+Updating prebuilts and/or headers 
+
+c2b683c77f90fbca8b8c2e0b59efee45db468369 - nvbufsurface.h
+83e21353d1fe20cba4bd630c3b41c1615b8268ed - nvbuf_utils.h
+15a81528f7535e2adbd92f5caa188e31859f02a4 - gst-plugins-nv-video-sinks/Makefile
+7ef56486c9e6b3e354473a2959d274517dd709da - gst-plugins-nv-video-sinks/gstnvvideosinks.c
+9825d8a113dbf7dd16f791ff1ca66f2de3047b22 - gst-plugins-nv-video-sinks/LICENSE.libgstnvvideosinks
+1421743380a9eb4d86e41ff625ed2d24b9ecba3f - gst-plugins-nv-video-sinks/nv3dsink/gstnv3dsink.c
+9b7125a2d7ebe2ea647c43d2eb43e8d04cd16c47 - gst-plugins-nv-video-sinks/nv3dsink/gstnv3dsink.h
+5e13200e9cba5f45d74cf6899dd3356d5f5d1c8e - gst-plugins-nv-video-sinks/common/context.h
+ad360a668f0f494ebd2bb630c3faaf93078c6e0d - gst-plugins-nv-video-sinks/common/window.c
+72f9a4b823c4162c9f22cedb7c1cb1764d06fcb6 - gst-plugins-nv-video-sinks/common/renderer.h
+fcb1b73054a1c8ff8ce614878ee46880273656f4 - gst-plugins-nv-video-sinks/common/renderer.c
+440e5cf93ac15ddd81f1b702441910eeb1f4abbf - gst-plugins-nv-video-sinks/common/context.c
+d48e1dae85e3c6a0ba7623be7ee306b8e1ef6695 - gst-plugins-nv-video-sinks/common/gstnvvideofwd.h
+a0debde9b0fd5bc6ac9c5fac7f1a14745a2b0617 - gst-plugins-nv-video-sinks/common/display.c
+96b0b4d38692a0aecf70944749684ac938ff192f - gst-plugins-nv-video-sinks/common/display.h
+6e77d54ffc5d1a49d5bad768cdf5cfadf458f1f7 - gst-plugins-nv-video-sinks/common/window.h
+638b0da4ea65d02818289e89bc1d635ddbcdaec5 - gst-plugins-nv-video-sinks/common/x11/window_x11.h
+d692399c6d94dbc7814770b08baf9271ed97f8e0 - gst-plugins-nv-video-sinks/common/x11/display_x11.h
+b3f1b67cae0b4643f6a676b362ceaa61abc9c40f - gst-plugins-nv-video-sinks/common/x11/display_x11.c
+c98945083e215dff26507c1e10b0ebf62a2c6fb7 - gst-plugins-nv-video-sinks/common/x11/window_x11.c
+f528404a796de5a23dab281588feb72f42343e59 - gst-plugins-nv-video-sinks/common/renderer/renderer_gl.h
+707a36267f329bb22afdd19b947be5a99478ec7a - gst-plugins-nv-video-sinks/common/renderer/renderer_gl.c
+e776cb49509ce1a1c7aa0d6fd0c6bbdab87c014f - gst-plugins-nv-video-sinks/common/egl/context_egl.c
+536a072a8ef84b3c91307777f88121fb88df2c4f - gst-plugins-nv-video-sinks/common/egl/context_egl.h

gst-plugins-nv-video-sinks/LICENSE.libgstnvvideosinks

@@ -0,0 +1,23 @@
+The software listed below is licensed under the terms of the LGPLv2.1
+(see below). To obtain source code, contact oss-requests@nvidia.com.
+
+libgstnvvideosinks (libgstnvvideosinks.so)
+
+------------------------------------
+
+/*
+ * Copyright (c) 2018-2019, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */

gst-plugins-nv-video-sinks/Makefile

@@ -0,0 +1,78 @@
+###############################################################################
+#
+# Copyright (c) 2022, NVIDIA CORPORATION.  All rights reserved.
+#
+# NVIDIA Corporation and its licensors retain all intellectual property
+# and proprietary rights in and to this software, related documentation
+# and any modifications thereto.  Any use, reproduction, disclosure or
+# distribution of this software and related documentation without an express
+# license agreement from NVIDIA Corporation is strictly prohibited.
+#
+###############################################################################
+
+ifneq ($(MAKECMDGOALS),install)
+ifeq ($(CUDA_VER),)
+  $(error "CUDA_VER is not set. Set it by running - "export CUDA_VER=<cuda-version>"")
+endif
+endif
+
+SO_NAME := libgstnvvideosinks.so
+DEST_DIR ?= /usr/lib/aarch64-linux-gnu/gstreamer-1.0
+
+SRCS := common/context.c \
+	common/display.c \
+	common/egl/context_egl.c \
+	common/renderer.c \
+	common/renderer/renderer_gl.c \
+	common/window.c \
+	common/x11/display_x11.c \
+	common/x11/window_x11.c \
+	gstnvvideosinks.c \
+	nv3dsink/gstnv3dsink.c
+
+INCLUDES += -I./common \
+	-I./common/egl \
+	-I./common/renderer \
+	-I./common/x11 \
+	-I/usr/local/include/gstreamer-1.0 \
+	-I/usr/local/cuda-$(CUDA_VER)/targets/aarch64-linux/include/ \
+	-I../
+
+PKGS := glib-2.0 \
+	gstreamer-1.0 \
+	gstreamer-base-1.0 \
+	gstreamer-video-1.0
+
+OBJS := $(SRCS:.c=.o)
+
+CFLAGS := -fPIC \
+	-DNV_VIDEO_SINKS_HAS_EGL \
+	-DNV_VIDEO_SINKS_HAS_GL \
+	-DNV_VIDEO_SINKS_HAS_NV3DSINK \
+	-DNV_VIDEO_SINKS_HAS_X11
+
+CFLAGS += `pkg-config --cflags $(PKGS)`
+
+LDFLAGS = -Wl,--no-undefined -L/usr/lib/aarch64-linux-gnu/tegra -L/usr/local/cuda-$(CUDA_VER)/targets/aarch64-linux/lib/
+
+LIBS = -lnvbuf_utils -lnvbufsurface -lGLESv2 -lEGL -lX11 -lm -lcuda -lcudart
+
+LIBS += `pkg-config --libs $(PKGS)`
+
+all: $(SO_NAME)
+
+%.o: %.c
+	$(CC) -c $< $(CFLAGS) $(INCLUDES) -o $@
+
+$(SO_NAME): $(OBJS)
+	$(CC) -shared -o $(SO_NAME) $(OBJS) $(LIBS) $(LDFLAGS)
+
+.PHONY: install
+$(DEST_DIR):
+	mkdir -p $(DEST_DIR)
+install: $(SO_NAME) | $(DEST_DIR)
+	cp -vp $(SO_NAME) $(DEST_DIR)
+
+.PHONY: clean
+clean:
+	rm -rf $(OBJS) $(SO_NAME)

gst-plugins-nv-video-sinks/README.txt

@@ -0,0 +1,38 @@
+###############################################################################
+#
+# Copyright (c) 2019-2022, NVIDIA CORPORATION.  All rights reserved.
+#
+# NVIDIA Corporation and its licensors retain all intellectual property
+# and proprietary rights in and to this software, related documentation
+# and any modifications thereto.  Any use, reproduction, disclosure or
+# distribution of this software and related documentation without an express
+# license agreement from NVIDIA Corporation is strictly prohibited.
+#
+###############################################################################
+
+Steps to compile the "gst-plugins-nv-video-sinks" sources:
+
+1) Install gstreamer related packages using the command:
+
+	sudo apt-get install gstreamer1.0-tools gstreamer1.0-alsa \
+		gstreamer1.0-plugins-base gstreamer1.0-plugins-good \
+		gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly \
+		gstreamer1.0-libav libgstreamer1.0-dev \
+		libgstreamer-plugins-base1.0-dev libegl1-mesa-dev
+
+2) Install CUDA Runtime 10.0+
+
+3) Extract the package "libgstnvvideosinks_src.tbz2" as follow:
+
+	tar xvjf libgstnvvideosinks_src.tbz2`
+
+4) cd "gst-plugins-nv-video-sinks"
+
+5) Export the appropriate CUDA_VER using - "export CUDA_VER=<cuda-version>"
+
+5) run "make" to create "libgstnvvideosinks.so"
+
+6) run "sudo make install" to install "libgstnvvideosinks.so" in
+   "/usr/lib/aarch64-linux-gnu/gstreamer-1.0".
+
+7) run "make install DEST_DIR=<location>" to install at different <location>.

gst-plugins-nv-video-sinks/common/context.c

@@ -0,0 +1,469 @@
+/*
+ * Copyright (c) 2018-2021, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include <gst/base/gstdataqueue.h>
+
+#include "context.h"
+#include "window.h"
+
+#if NV_VIDEO_SINKS_HAS_EGL
+#include "context_egl.h"
+#endif
+
+#define GST_CAT_DEFAULT gst_debug_nv_video_context
+GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
+
+struct _GstNvVideoContextPrivate
+{
+  GstDataQueue *queue;
+
+  GThread *render_thread;
+  gboolean render_thread_active;
+  gboolean eos_handled;
+  GstFlowReturn last_ret;
+
+  GMutex render_lock;
+  GCond create_cond;
+  GCond quit_cond;
+  GCond eos_cond;
+};
+
+G_DEFINE_ABSTRACT_TYPE_WITH_CODE (GstNvVideoContext, gst_nv_video_context,
+    GST_TYPE_OBJECT, G_ADD_PRIVATE(GstNvVideoContext));
+
+GstNvVideoContextType
+gst_nv_video_context_get_handle_type (GstNvVideoContext * context)
+{
+  g_return_val_if_fail (GST_IS_NV_VIDEO_CONTEXT (context),
+      GST_NV_VIDEO_CONTEXT_TYPE_NONE);
+
+  return context->type;
+}
+
+static gpointer
+gst_nv_video_context_render_thread_func (GstNvVideoContext * context)
+{
+  GstNvVideoContextClass *context_class;
+  GstDataQueueItem *item = NULL;
+  GstFlowReturn ret = GST_FLOW_OK;
+
+  context_class = GST_NV_VIDEO_CONTEXT_GET_CLASS (context);
+
+  GST_DEBUG_OBJECT (context, "render thread started");
+
+  context_class->setup (context);
+
+  cudaError_t CUerr = cudaSuccess;
+  GST_LOG_OBJECT (context, "SETTING CUDA DEVICE = %d in func=%s\n", context->gpu_id, __func__);
+  CUerr = cudaSetDevice(context->gpu_id);
+  if (CUerr != cudaSuccess) {
+    GST_LOG_OBJECT (context,"\n *** Unable to set device in %s Line %d\n", __func__, __LINE__);
+    return NULL;
+  }
+
+  g_mutex_lock (&context->priv->render_lock);
+  context->priv->render_thread_active = TRUE;
+  context->priv->last_ret = ret;
+  g_cond_signal (&context->priv->create_cond);
+  g_mutex_unlock (&context->priv->render_lock);
+
+  while (gst_data_queue_pop (context->priv->queue, &item)) {
+    GstMiniObject *object = item->object;
+    GstBuffer *buf = NULL;
+
+    GST_TRACE_OBJECT (context,
+        "render thread: got data queue item %" GST_PTR_FORMAT, object);
+
+    ret = GST_FLOW_ERROR;
+
+    if (GST_IS_BUFFER (object)) {
+      buf = GST_BUFFER_CAST (item->object);
+
+      if (context_class->show_frame (context, buf)) {
+        ret = GST_FLOW_OK;
+      }
+    } else if (!object) {
+      GST_TRACE_OBJECT (context, "render thread: handle EOS");
+
+      context_class->handle_eos (context);
+
+      g_mutex_lock (&context->priv->render_lock);
+      g_cond_signal (&context->priv->eos_cond);
+      context->priv->eos_handled = TRUE;
+      g_mutex_unlock (&context->priv->render_lock);
+
+      GST_TRACE_OBJECT (context, "render thread: handled EOS");
+    } else {
+      g_assert_not_reached ();
+    }
+
+    item->destroy (item);
+
+    g_mutex_lock (&context->priv->render_lock);
+    context->priv->last_ret = ret;
+    g_mutex_unlock (&context->priv->render_lock);
+
+    if (ret != GST_FLOW_OK) {
+      break;
+    }
+
+    GST_TRACE_OBJECT (context, "render thread: handled");
+  }
+
+  GST_DEBUG_OBJECT (context, "tearing down render thread");
+
+  context_class->cleanup (context);
+
+  g_mutex_lock (&context->priv->render_lock);
+  g_cond_signal (&context->priv->quit_cond);
+  context->priv->render_thread_active = FALSE;
+  g_mutex_unlock (&context->priv->render_lock);
+
+  GST_DEBUG_OBJECT (context, "render thread exit");
+
+  return NULL;
+}
+
+static void
+gst_nv_video_context_queue_free_item (GstDataQueueItem * item)
+{
+  GstDataQueueItem *data = item;
+  if (data->object)
+    gst_mini_object_unref (data->object);
+  g_slice_free (GstDataQueueItem, data);
+}
+
+static gboolean
+gst_nv_video_context_render_thread_show_frame (GstNvVideoContext * context,
+    GstBuffer * buf)
+{
+  gboolean last_ret;
+  GstDataQueueItem *item;
+  GstMiniObject *obj = GST_MINI_OBJECT_CAST (buf);
+
+  g_assert (obj);
+
+  g_mutex_lock (&context->priv->render_lock);
+  last_ret = context->priv->last_ret;
+  g_mutex_unlock (&context->priv->render_lock);
+
+  if (last_ret != GST_FLOW_OK) {
+    return FALSE;
+  }
+
+  item = g_slice_new (GstDataQueueItem);
+  item->destroy = (GDestroyNotify) gst_nv_video_context_queue_free_item;
+  item->object = gst_mini_object_ref (obj);
+  item->size = 0;
+  item->duration = GST_CLOCK_TIME_NONE;
+  item->visible = TRUE;
+
+  if (!gst_data_queue_push (context->priv->queue, item)) {
+    item->destroy (item);
+    return FALSE;
+  }
+
+  return TRUE;
+}
+
+static gboolean
+gst_nv_video_context_queue_check_full (GstDataQueue * queue, guint visible,
+    guint bytes, guint64 time, gpointer checkdata)
+{
+  return FALSE;
+}
+
+static void
+gst_nv_video_context_finalize (GObject * object)
+{
+  GstNvVideoContext *context = GST_NV_VIDEO_CONTEXT (object);
+
+  GST_DEBUG_OBJECT (context, "finalize begin");
+
+  if (context->priv->queue) {
+    g_object_unref (context->priv->queue);
+    context->priv->queue = NULL;
+  }
+
+  if (context->priv->render_thread) {
+    g_thread_unref (context->priv->render_thread);
+    context->priv->render_thread = NULL;
+  }
+
+  if (context->window) {
+    gst_object_unref (context->window);
+    context->window = NULL;
+  }
+
+  if (context->display) {
+    gst_object_unref (context->display);
+    context->display = NULL;
+  }
+
+  g_mutex_clear (&context->priv->render_lock);
+  g_cond_clear (&context->priv->create_cond);
+  g_cond_clear (&context->priv->quit_cond);
+  g_cond_clear (&context->priv->eos_cond);
+
+  GST_DEBUG_OBJECT (context, "finalize done");
+
+  G_OBJECT_CLASS (gst_nv_video_context_parent_class)->finalize (object);
+}
+
+static void
+gst_nv_video_context_init (GstNvVideoContext * context)
+{
+  GstNvVideoContext *self = GST_NV_VIDEO_CONTEXT (context);
+  context->priv = (GstNvVideoContextPrivate *)gst_nv_video_context_get_instance_private (self);
+
+  g_mutex_init (&context->priv->render_lock);
+  g_cond_init (&context->priv->create_cond);
+  g_cond_init (&context->priv->quit_cond);
+  g_cond_init (&context->priv->eos_cond);
+
+  context->priv->queue = NULL;
+  context->priv->render_thread = NULL;
+  context->priv->render_thread_active = FALSE;
+  context->priv->eos_handled = FALSE;
+
+  context->using_NVMM = 0;
+  context->cuContext = NULL;
+  context->cuResource[0] = NULL;
+  context->cuResource[1] = NULL;
+  context->cuResource[2] = NULL;
+  context->gpu_id = 0;
+
+  GST_DEBUG_OBJECT (context, "init done");
+}
+
+static void
+gst_nv_video_context_class_init (GstNvVideoContextClass * klass)
+{
+  G_OBJECT_CLASS (klass)->finalize = gst_nv_video_context_finalize;
+}
+
+GstNvVideoContext *
+gst_nv_video_context_new (GstNvVideoDisplay * display)
+{
+  GstNvVideoContext *context = NULL;
+  static volatile gsize debug_init = 0;
+  const gchar *context_name = NULL;
+
+  if (g_once_init_enter (&debug_init)) {
+    GST_DEBUG_CATEGORY_INIT (gst_debug_nv_video_context, "nvvideocontext", 0,
+        "nvvideocontext");
+    g_once_init_leave (&debug_init, 1);
+  }
+
+  context_name = g_getenv ("GST_NV_VIDEO_CONTEXT");
+
+#if NV_VIDEO_SINKS_HAS_EGL
+  if (!context && (!context_name || g_strstr_len (context_name, 3, "egl"))) {
+    context = GST_NV_VIDEO_CONTEXT (gst_nv_video_context_egl_new (display));
+  }
+#endif
+
+  if (!context) {
+    GST_ERROR ("couldn't create context. GST_NV_VIDEO_CONTEXT = %s",
+        context_name ? context_name : NULL);
+    return NULL;
+  }
+
+  context->display = gst_object_ref (display);
+
+  GST_DEBUG_OBJECT (context, "created context for display %" GST_PTR_FORMAT,
+      display);
+
+  return context;
+}
+
+gboolean
+gst_nv_video_context_show_frame (GstNvVideoContext * context, GstBuffer * buf)
+{
+  g_mutex_lock (&context->priv->render_lock);
+  if (context->priv->render_thread_active) {
+    g_mutex_unlock (&context->priv->render_lock);
+    return gst_nv_video_context_render_thread_show_frame (context, buf);
+  }
+  g_mutex_unlock (&context->priv->render_lock);
+
+  return FALSE;
+}
+
+void
+gst_nv_video_context_handle_tearing (GstNvVideoContext * context)
+{
+  GstNvVideoContextClass *context_class =
+      GST_NV_VIDEO_CONTEXT_GET_CLASS (context);
+  context_class->handle_tearing (context);
+  return;
+}
+
+void
+gst_nv_video_context_handle_drc (GstNvVideoContext * context)
+{
+  GstNvVideoContextClass *context_class =
+      GST_NV_VIDEO_CONTEXT_GET_CLASS (context);
+
+  context_class->handle_drc (context);
+  return;
+}
+
+void
+gst_nv_video_context_handle_eos (GstNvVideoContext * context)
+{
+  GstNvVideoContextClass *context_class =
+      GST_NV_VIDEO_CONTEXT_GET_CLASS (context);
+  GstDataQueueItem *item;
+
+  g_mutex_lock (&context->priv->render_lock);
+
+  if (!context->priv->render_thread_active) {
+    g_mutex_unlock (&context->priv->render_lock);
+    context_class->handle_eos (context);
+    return;
+  }
+  // Push NULL object in queue to indicate EOS and wait till it is handled.
+  item = g_slice_new (GstDataQueueItem);
+  item->destroy = (GDestroyNotify) gst_nv_video_context_queue_free_item;
+  item->object = NULL;
+  item->size = 0;
+  item->duration = GST_CLOCK_TIME_NONE;
+  item->visible = TRUE;
+
+  if (!gst_data_queue_push (context->priv->queue, item)) {
+    GST_ERROR_OBJECT (context, "faild to send EOS to render thread");
+    item->destroy (item);
+    g_mutex_unlock (&context->priv->render_lock);
+    return;
+  }
+  GST_TRACE_OBJECT (context, "wait for render thread to handle EOS");
+  while (context->priv->render_thread_active && !context->priv->eos_handled) {
+    g_cond_wait (&context->priv->eos_cond, &context->priv->render_lock);
+  }
+  GST_TRACE_OBJECT (context, "wait for render thread to handle EOS is done");
+  context->priv->eos_handled = FALSE;
+  g_mutex_unlock (&context->priv->render_lock);
+}
+
+GstCaps *
+gst_nv_video_context_get_caps (GstNvVideoContext * context)
+{
+  GstNvVideoContextClass *context_class;
+
+  if (!context) {
+    return NULL;
+  }
+
+  context_class = GST_NV_VIDEO_CONTEXT_GET_CLASS (context);
+
+  return context_class->get_caps (context);
+}
+
+gboolean
+gst_nv_video_context_set_window (GstNvVideoContext * context,
+    GstNvVideoWindow * window)
+{
+  if (context->window) {
+    gst_object_unref (context->window);
+  }
+
+  if (window) {
+    // Before the object's GObjectClass.dispose method is called, every
+    // GWeakRef associated with becomes empty.
+    g_weak_ref_set (&window->context, context);
+  }
+
+  context->window = window ? gst_object_ref (window) : NULL;
+
+  return TRUE;
+}
+
+void
+gst_nv_video_context_destroy_render_thread (GstNvVideoContext * context)
+{
+  if (context->priv->queue) {
+    gst_data_queue_set_flushing (context->priv->queue, TRUE);
+    gst_data_queue_flush (context->priv->queue);
+  }
+
+  g_mutex_lock (&context->priv->render_lock);
+
+  if (context->priv->render_thread_active) {
+    GST_DEBUG_OBJECT (context, "destroying render thread");
+    while (context->priv->render_thread_active) {
+      g_cond_wait (&context->priv->quit_cond, &context->priv->render_lock);
+    }
+    g_thread_join (context->priv->render_thread);
+    GST_DEBUG_OBJECT (context, "render thread destroyed");
+  }
+
+  g_mutex_unlock (&context->priv->render_lock);
+}
+
+gboolean
+gst_nv_video_context_create_render_thread (GstNvVideoContext * context)
+{
+  g_mutex_lock (&context->priv->render_lock);
+
+  if (!context->priv->render_thread) {
+    g_assert (context->priv->queue == NULL);
+
+    context->priv->queue =
+        gst_data_queue_new (gst_nv_video_context_queue_check_full, NULL, NULL,
+        NULL);
+
+    if (!context->priv->queue) {
+      g_mutex_unlock (&context->priv->render_lock);
+      return FALSE;
+    }
+
+    gst_data_queue_set_flushing (context->priv->queue, FALSE);
+    gst_data_queue_flush (context->priv->queue);
+
+    context->priv->render_thread =
+        g_thread_new ("NvVideoRenderThread",
+        (GThreadFunc) gst_nv_video_context_render_thread_func, context);
+
+    while (!context->priv->render_thread_active) {
+      g_cond_wait (&context->priv->create_cond, &context->priv->render_lock);
+    }
+
+    if (context->priv->last_ret != GST_FLOW_OK) {
+      g_object_unref (context->priv->queue);
+      context->priv->queue = NULL;
+      g_mutex_unlock (&context->priv->render_lock);
+      return FALSE;
+    }
+
+    GST_INFO_OBJECT (context, "render thread created");
+  }
+
+  g_mutex_unlock (&context->priv->render_lock);
+
+  return TRUE;
+}
+
+gboolean
+gst_nv_video_context_create (GstNvVideoContext * context)
+{
+  GstNvVideoContextClass *context_class;
+
+  context_class = GST_NV_VIDEO_CONTEXT_GET_CLASS (context);
+
+  return context_class->create (context);
+}

gst-plugins-nv-video-sinks/common/context.h

@@ -0,0 +1,122 @@
+/*
+ * Copyright (c) 2018-2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV_VIDEO_CONTEXT_H__
+#define __GST_NV_VIDEO_CONTEXT_H__
+
+#include <gst/gst.h>
+#include <gst/video/gstvideosink.h>
+#include <gst/video/video.h>
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+#include "gstnvvideofwd.h"
+
+#include <cuda.h>
+#include <cudaGL.h>
+#include <cuda_runtime.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_NV_VIDEO_CONTEXT \
+    (gst_nv_video_context_get_type())
+#define GST_NV_VIDEO_CONTEXT(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_NV_VIDEO_CONTEXT, GstNvVideoContext))
+#define GST_NV_VIDEO_CONTEXT_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV_VIDEO_CONTEXT, GstNvVideoContextClass))
+#define GST_IS_NV_VIDEO_CONTEXT(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV_VIDEO_CONTEXT))
+#define GST_IS_NV_VIDEO_CONTEXT_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV_VIDEO_CONTEXT))
+#define GST_NV_VIDEO_CONTEXT_GET_CLASS(o) \
+    (G_TYPE_INSTANCE_GET_CLASS((o), GST_TYPE_NV_VIDEO_CONTEXT, GstNvVideoContextClass))
+
+typedef enum
+{
+  GST_NV_VIDEO_CONTEXT_TYPE_NONE = 0,
+  GST_NV_VIDEO_CONTEXT_TYPE_EGL = (1 << 0),
+
+  GST_NV_VIDEO_CONTEXT_TYPE_ANY = G_MAXUINT32
+} GstNvVideoContextType;
+
+struct _GstNvVideoContextClass
+{
+  GstObjectClass parent_class;
+
+  gboolean  (*create)       (GstNvVideoContext * context);
+  gboolean  (*setup)        (GstNvVideoContext * context);
+  void      (*cleanup)      (GstNvVideoContext * context);
+  GstCaps   *(*get_caps)    (GstNvVideoContext * context);
+  gboolean  (*show_frame)   (GstNvVideoContext * context, GstBuffer * buf);
+  void      (*handle_eos)   (GstNvVideoContext * context);
+  void      (*handle_drc)   (GstNvVideoContext * context);
+  void      (*handle_tearing)   (GstNvVideoContext * context);
+};
+
+struct _GstNvVideoContext
+{
+  GstObject parent;
+
+  GstNvVideoDisplay *display;
+  GstNvVideoWindow *window;
+
+  GstNvVideoContextType type;
+
+  GstNvVideoContextPrivate *priv;
+
+  guint using_NVMM;
+  GstVideoInfo configured_info;
+
+  gboolean is_cuda_init;
+  CUcontext cuContext;
+  CUgraphicsResource cuResource[3];
+  unsigned int gpu_id;
+
+};
+
+GST_EXPORT
+GstNvVideoContext * gst_nv_video_context_new (GstNvVideoDisplay * display);
+
+GST_EXPORT
+gboolean gst_nv_video_context_create (GstNvVideoContext * context);
+GST_EXPORT
+GstCaps * gst_nv_video_context_get_caps (GstNvVideoContext * context);
+GST_EXPORT
+gboolean gst_nv_video_context_set_window (GstNvVideoContext * context, GstNvVideoWindow * window);
+GST_EXPORT
+gboolean gst_nv_video_context_show_frame (GstNvVideoContext * context, GstBuffer * buf);
+GST_EXPORT
+void gst_nv_video_context_handle_eos (GstNvVideoContext * context);
+GST_EXPORT
+void gst_nv_video_context_handle_drc (GstNvVideoContext * context);
+GST_EXPORT
+void gst_nv_video_context_handle_tearing (GstNvVideoContext * context);
+GST_EXPORT
+gboolean gst_nv_video_context_create_render_thread (GstNvVideoContext * context);
+GST_EXPORT
+void gst_nv_video_context_destroy_render_thread (GstNvVideoContext * context);
+GST_EXPORT
+GstNvVideoContextType gst_nv_video_context_get_handle_type (GstNvVideoContext * context);
+
+GType gst_nv_video_context_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_CONTEXT_H__ */

gst-plugins-nv-video-sinks/common/display.c

@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include "display.h"
+#include "context.h"
+#include "window.h"
+
+#if NV_VIDEO_SINKS_HAS_X11
+#include "display_x11.h"
+#endif
+
+#define GST_CAT_DEFAULT gst_debug_nv_video_display
+GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
+
+G_DEFINE_ABSTRACT_TYPE (GstNvVideoDisplay, gst_nv_video_display,
+    GST_TYPE_OBJECT);
+
+GstNvVideoDisplayType
+gst_nv_video_display_get_handle_type (GstNvVideoDisplay * display)
+{
+  g_return_val_if_fail (GST_IS_NV_VIDEO_DISPLAY (display),
+      GST_NV_VIDEO_DISPLAY_TYPE_NONE);
+
+  return display->type;
+}
+
+static void
+gst_nv_video_display_init (GstNvVideoDisplay * display)
+{
+
+}
+
+gboolean
+gst_nv_video_display_create_context (GstNvVideoDisplay * display,
+    GstNvVideoContext ** ptr_context)
+{
+  GstNvVideoContext *context = NULL;
+
+  g_return_val_if_fail (display != NULL, FALSE);
+  g_return_val_if_fail (ptr_context != NULL, FALSE);
+
+  context = gst_nv_video_context_new (display);
+  if (!context) {
+    GST_ERROR ("context creation failed");
+    return FALSE;
+  }
+
+  if (!gst_nv_video_context_create (context)) {
+    return FALSE;
+  }
+
+  *ptr_context = context;
+
+  GST_DEBUG_OBJECT (display, "created context %" GST_PTR_FORMAT, context);
+
+  return TRUE;
+}
+
+GstNvVideoWindow *
+gst_nv_video_display_create_window (GstNvVideoDisplay * display)
+{
+  return gst_nv_video_window_new (display);
+}
+
+static void
+gst_nv_video_display_class_init (GstNvVideoDisplayClass * klass)
+{
+}
+
+gboolean
+gst_nv_video_display_new (GstNvVideoDisplay ** display)
+{
+  static volatile gsize debug_init = 0;
+  const gchar *winsys_name = NULL;
+
+  if (g_once_init_enter (&debug_init)) {
+    GST_DEBUG_CATEGORY_INIT (gst_debug_nv_video_display, "nvvideodisplay", 0,
+        "nvvideodisplay");
+    g_once_init_leave (&debug_init, 1);
+  }
+
+  winsys_name = g_getenv ("GST_NV_VIDEO_WINSYS");
+
+#if NV_VIDEO_SINKS_HAS_X11
+  if (!*display && (!winsys_name || g_strstr_len (winsys_name, 3, "x11"))) {
+    *display = GST_NV_VIDEO_DISPLAY (gst_nv_video_display_x11_new (NULL));
+  }
+#endif
+
+  if (!*display) {
+    GST_ERROR ("couldn't create display. GST_NV_VIDEO_WINSYS = %s",
+        winsys_name ? winsys_name : NULL);
+    return FALSE;
+  }
+
+  return TRUE;
+}

gst-plugins-nv-video-sinks/common/display.h

@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV_VIDEO_DISPLAY_H__
+#define __GST_NV_VIDEO_DISPLAY_H__
+
+#include <gst/gst.h>
+#include <gst/video/gstvideosink.h>
+#include <gst/video/video.h>
+
+#include "gstnvvideofwd.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_NV_VIDEO_DISPLAY \
+    (gst_nv_video_display_get_type())
+#define GST_NV_VIDEO_DISPLAY(obj)\
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_NV_VIDEO_DISPLAY, GstNvVideoDisplay))
+#define GST_NV_VIDEO_DISPLAY_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV_VIDEO_DISPLAY, GstNvVideoDisplayClass))
+#define GST_IS_NV_VIDEO_DISPLAY(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV_VIDEO_DISPLAY))
+#define GST_IS_NV_VIDEO_DISPLAY_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV_VIDEO_DISPLAY))
+#define GST_NV_VIDEO_DISPLAY_CAST(obj) \
+    ((GstNvVideoDisplay*)(obj))
+#define GST_NV_VIDEO_DISPLAY_GET_CLASS(o) \
+    (G_TYPE_INSTANCE_GET_CLASS((o), GST_TYPE_NV_VIDEO_DISPLAY, GstNvVideoDisplayClass))
+
+struct _GstNvVideoDisplayClass
+{
+  GstObjectClass parent_class;
+
+  guintptr  (*get_handle)   (GstNvVideoDisplay * display);
+};
+
+typedef enum
+{
+  GST_NV_VIDEO_DISPLAY_TYPE_NONE = 0,
+  GST_NV_VIDEO_DISPLAY_TYPE_X11 = (1 << 0),
+
+  GST_NV_VIDEO_DISPLAY_TYPE_ANY = G_MAXUINT32
+} GstNvVideoDisplayType;
+
+struct _GstNvVideoDisplay
+{
+  GstObject parent;
+
+  GstNvVideoDisplayType type;
+};
+
+GST_EXPORT
+gboolean gst_nv_video_display_new (GstNvVideoDisplay ** display);
+GST_EXPORT
+gboolean gst_nv_video_display_create_context (GstNvVideoDisplay * display, GstNvVideoContext ** ptr_context);
+GST_EXPORT
+GstNvVideoDisplayType gst_nv_video_display_get_handle_type (GstNvVideoDisplay * display);
+GST_EXPORT
+GstNvVideoWindow *gst_nv_video_display_create_window (GstNvVideoDisplay * display);
+
+GType gst_nv_video_display_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_DISPLAY_H__ */

gst-plugins-nv-video-sinks/common/egl/context_egl.c

@@ -0,0 +1,487 @@
+/*
+ * Copyright (c) 2018-2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include "context_egl.h"
+#include "display.h"
+#include "display_x11.h"
+#include "window.h"
+#include "nvbufsurface.h"
+
+#include <EGL/egl.h>
+
+G_GNUC_INTERNAL extern GstDebugCategory *gst_debug_nv_video_context;
+#define GST_CAT_DEFAULT gst_debug_nv_video_context
+
+G_DEFINE_TYPE (GstNvVideoContextEgl, gst_nv_video_context_egl,
+    GST_TYPE_NV_VIDEO_CONTEXT);
+
+static GstCaps *
+gst_nv_video_context_egl_new_template_caps (GstVideoFormat format)
+{
+  return gst_caps_new_simple ("video/x-raw",
+      "format", G_TYPE_STRING, gst_video_format_to_string (format),
+      "width", GST_TYPE_INT_RANGE, 1, G_MAXINT,
+      "height", GST_TYPE_INT_RANGE, 1, G_MAXINT,
+      "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
+}
+
+static void
+log_egl_error (GstNvVideoContext * context, const char *name)
+{
+  GST_ERROR_OBJECT (context, "egl error: %s returned %x", name, eglGetError ());
+}
+
+static gboolean
+gst_nv_video_context_egl_is_surface_changed (GstNvVideoContextEgl * context_egl)
+{
+  gint w, h;
+
+  eglQuerySurface (context_egl->display, context_egl->surface, EGL_WIDTH, &w);
+  eglQuerySurface (context_egl->display, context_egl->surface, EGL_HEIGHT, &h);
+
+  if (context_egl->surface_width != w || context_egl->surface_height != h) {
+    context_egl->surface_width = w;
+    context_egl->surface_height = h;
+    return TRUE;
+  }
+
+  return FALSE;
+}
+
+static gboolean
+gst_nv_video_context_egl_show_frame (GstNvVideoContext * context,
+    GstBuffer * buf)
+{
+  GstNvVideoContextEgl *context_egl = GST_NV_VIDEO_CONTEXT_EGL (context);
+  EGLImageKHR image = EGL_NO_IMAGE_KHR;
+  GstMemory *mem;
+  NvBufSurface *in_surface = NULL;
+  gboolean is_cuda_mem = TRUE;
+
+  if (!context_egl->surface) {
+    guintptr handle = gst_nv_video_window_get_handle (context->window);
+
+    context_egl->surface =
+        eglCreateWindowSurface (context_egl->display, context_egl->config,
+        (EGLNativeWindowType) handle, NULL);
+    if (context_egl->surface == EGL_NO_SURFACE) {
+      log_egl_error (context, "eglCreateWindowSurface");
+      return FALSE;
+    }
+
+    if (!eglMakeCurrent (context_egl->display, context_egl->surface,
+            context_egl->surface, context_egl->context)) {
+      log_egl_error (context, "eglMakeCurrent");
+      return FALSE;
+    }
+
+    GST_DEBUG_OBJECT (context, "egl surface %p created", context_egl->surface);
+  }
+
+  if (!context_egl->renderer) {
+    context_egl->renderer = gst_nv_video_renderer_new (context, "gl");
+    if (!context_egl->renderer) {
+      GST_ERROR_OBJECT (context, "renderer creation failed");
+      return FALSE;
+    }
+    if (!gst_nv_video_renderer_setup (context_egl->renderer)) {
+      GST_ERROR_OBJECT (context, "renderer setup failed");
+      return FALSE;
+    }
+  }
+
+  if (context->using_NVMM) {
+    if (!context->is_cuda_init) {
+      if (!gst_nv_video_renderer_cuda_init (context, context_egl->renderer)) {
+        GST_ERROR_OBJECT (context, "cuda init failed");
+        return FALSE;
+      }
+    }
+  }
+
+  if (gst_nv_video_context_egl_is_surface_changed (context_egl)) {
+    GST_DEBUG_OBJECT (context, "surface dimensions changed to %dx%d",
+        context_egl->surface_width, context_egl->surface_height);
+
+    gst_nv_video_renderer_update_viewport (context_egl->renderer,
+        context_egl->surface_width, context_egl->surface_height);
+  }
+
+  if (gst_buffer_n_memory (buf) >= 1 && (mem = gst_buffer_peek_memory (buf, 0))) {
+    //Software buffer handling
+    if (!context->using_NVMM) {
+       if (!gst_nv_video_renderer_fill_texture(context, context_egl->renderer, buf)) {
+         GST_ERROR_OBJECT (context, "fill_texture failed");
+         return FALSE;
+       }
+       if (!gst_nv_video_renderer_draw_2D_Texture (context_egl->renderer)) {
+         GST_ERROR_OBJECT (context, "draw 2D Texture failed");
+         return FALSE;
+       }
+    }
+    else {
+      // NvBufSurface support (NVRM and CUDA)
+      GstMapInfo map = { NULL, (GstMapFlags) 0, NULL, 0, 0, };
+      mem = gst_buffer_peek_memory (buf, 0);
+      gst_memory_map (mem, &map, GST_MAP_READ);
+
+      /* Types of Buffers handled -
+        *     NvBufSurface
+        *                     - NVMM buffer type
+        *                     - Cuda buffer type
+       */
+      /* NvBufSurface type are handled here */
+      in_surface = (NvBufSurface*) map.data;
+      NvBufSurfaceMemType memType = in_surface->memType;
+
+      if (memType == NVBUF_MEM_DEFAULT) {
+#ifdef IS_DESKTOP
+        memType = NVBUF_MEM_CUDA_DEVICE;
+#else
+        memType = NVBUF_MEM_SURFACE_ARRAY;
+#endif
+      }
+
+      if (memType == NVBUF_MEM_SURFACE_ARRAY || memType == NVBUF_MEM_HANDLE) {
+        is_cuda_mem = FALSE;
+      }
+
+      if (is_cuda_mem == FALSE) {
+        /* NvBufSurface - NVMM buffer type are handled here */
+        if (in_surface->batchSize != 1) {
+          GST_ERROR_OBJECT (context,"ERROR: Batch size not 1\n");
+          return FALSE;
+        }
+        if (NvBufSurfaceMapEglImage (in_surface, 0) !=0 ) {
+          GST_ERROR_OBJECT (context,"ERROR: NvBufSurfaceMapEglImage\n");
+          return FALSE;
+        }
+        image = in_surface->surfaceList[0].mappedAddr.eglImage;
+        gst_nv_video_renderer_draw_eglimage (context_egl->renderer, image);
+      }
+      else {
+        /* NvBufSurface - Cuda buffer type are handled here */
+        if (!gst_nv_video_renderer_cuda_buffer_copy (context, context_egl->renderer, buf))
+        {
+          GST_ERROR_OBJECT (context,"cuda buffer copy failed\n");
+          return FALSE;
+        }
+        if (!gst_nv_video_renderer_draw_2D_Texture (context_egl->renderer)) {
+          GST_ERROR_OBJECT (context,"draw 2D texture failed");
+          return FALSE;
+        }
+      }
+      gst_memory_unmap (mem, &map);
+    }
+  }
+
+
+  if (!eglSwapBuffers (context_egl->display, context_egl->surface)) {
+    log_egl_error (context, "eglSwapBuffers");
+  }
+
+  if (image != EGL_NO_IMAGE_KHR) {
+    NvBufSurfaceUnMapEglImage (in_surface, 0);
+  }
+
+  GST_TRACE_OBJECT (context, "release %p hold %p", context_egl->last_buf, buf);
+
+  // TODO: We hold buffer used in current drawing till next swap buffer
+  // is completed so that decoder won't write it till GL has finished using it.
+  // When Triple buffering in X is enabled, this can cause tearing as completion
+  // of next swap buffer won't guarantee GL has finished with the buffer used in
+  // current swap buffer. This issue will be addresed when we transfer SyncFds
+  // from decoder <-> sink.
+  if (!context_egl->is_drc_on) {
+    gst_buffer_replace (&context_egl->last_buf, buf);
+  }
+  return TRUE;
+}
+
+static void
+gst_nv_video_context_egl_handle_tearing (GstNvVideoContext * context)
+{
+  GstNvVideoContextEgl *context_egl = GST_NV_VIDEO_CONTEXT_EGL (context);
+  context_egl->is_drc_on = 0;
+  return;
+}
+
+static void
+gst_nv_video_context_egl_handle_drc (GstNvVideoContext * context)
+{
+  GstNvVideoContextEgl *context_egl = GST_NV_VIDEO_CONTEXT_EGL (context);
+
+  GST_TRACE_OBJECT (context, "release last frame when resolution changes %p", context_egl->last_buf);
+
+  if (context_egl->last_buf)
+    context_egl->is_drc_on = 1;
+  gst_buffer_replace (&context_egl->last_buf, NULL);
+}
+
+static void
+gst_nv_video_context_egl_handle_eos (GstNvVideoContext * context)
+{
+  GstNvVideoContextEgl *context_egl = GST_NV_VIDEO_CONTEXT_EGL (context);
+
+  GST_TRACE_OBJECT (context, "release last frame %p", context_egl->last_buf);
+
+  gst_buffer_replace (&context_egl->last_buf, NULL);
+}
+
+static gboolean
+gst_nv_video_context_egl_setup (GstNvVideoContext * context)
+{
+  GstNvVideoDisplayX11 *display_x11 = (GstNvVideoDisplayX11 *) context->display;
+  GstNvVideoContextEgl *context_egl = GST_NV_VIDEO_CONTEXT_EGL (context);
+  EGLint major, minor;
+  EGLint num_configs;
+  EGLint attr[] = {
+    EGL_BUFFER_SIZE, 24,
+    EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
+    EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
+    EGL_NONE
+  };
+  EGLint attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
+
+  GST_DEBUG_OBJECT (context, "EGL context setup");
+
+  context_egl->display =
+      eglGetDisplay ((EGLNativeDisplayType) display_x11->dpy);
+
+  if (!eglInitialize (context_egl->display, &major, &minor)) {
+    log_egl_error (context, "eglInitialize");
+    return FALSE;
+  }
+
+  GST_INFO_OBJECT (context, "egl version: %d.%d", major, minor);
+
+  eglBindAPI (EGL_OPENGL_ES_API);
+
+  if (!eglChooseConfig (context_egl->display, attr, &context_egl->config, 1,
+          &num_configs)) {
+    log_egl_error (context, "eglChooseConfig");
+  }
+
+  context_egl->context =
+      eglCreateContext (context_egl->display, context_egl->config,
+      EGL_NO_CONTEXT, attribs);
+  if (context_egl->context == EGL_NO_CONTEXT) {
+    log_egl_error (context, "eglChooseConfig");
+    return FALSE;
+  }
+
+  GST_DEBUG_OBJECT (context, "egl context %p created", context_egl->context);
+
+  return TRUE;
+}
+
+static void
+gst_nv_video_context_egl_cleanup (GstNvVideoContext * context)
+{
+  GstNvVideoContextEgl *context_egl = GST_NV_VIDEO_CONTEXT_EGL (context);
+
+  GST_DEBUG_OBJECT (context, "egl cleanup display=%p surface=%p context=%p",
+      context_egl->display, context_egl->surface, context_egl->context);
+
+  if (context->using_NVMM) {
+    gst_nv_video_renderer_cuda_cleanup (context, context_egl->renderer);
+  }
+
+  if (context_egl->renderer) {
+    gst_nv_video_renderer_cleanup (context_egl->renderer);
+    gst_object_unref (context_egl->renderer);
+    context_egl->renderer = NULL;
+  }
+
+  if (!eglMakeCurrent (context_egl->display, EGL_NO_SURFACE, EGL_NO_SURFACE,
+          EGL_NO_CONTEXT)) {
+    log_egl_error (context, "eglMakeCurrent");
+  }
+
+  if (context_egl->surface) {
+    eglDestroySurface (context_egl->display, context_egl->surface);
+    context_egl->surface = NULL;
+  }
+
+  if (context_egl->context) {
+    eglDestroyContext (context_egl->display, context_egl->context);
+    context_egl->context = NULL;
+  }
+
+  eglTerminate (context_egl->display);
+  context_egl->display = NULL;
+
+  GST_DEBUG_OBJECT (context, "egl cleanup done");
+
+  return;
+}
+
+static GstCaps *
+gst_nv_video_context_egl_getcaps (GstNvVideoContext * context)
+{
+  GstNvVideoContextEgl *context_egl = GST_NV_VIDEO_CONTEXT_EGL (context);
+
+  GST_LOG_OBJECT (context, "context add_caps  %" GST_PTR_FORMAT,
+      context_egl->caps);
+
+  return gst_caps_copy (context_egl->caps);
+}
+
+static gboolean
+gst_nv_video_context_egl_create (GstNvVideoContext * context)
+{
+  return gst_nv_video_context_create_render_thread (context);
+}
+
+static void
+gst_nv_video_context_egl_finalize (GObject * object)
+{
+  GstNvVideoContext *context = GST_NV_VIDEO_CONTEXT (object);
+  GstNvVideoContextEgl *context_egl = GST_NV_VIDEO_CONTEXT_EGL (context);
+
+  GST_DEBUG_OBJECT (context, "finalize begin");
+
+  gst_nv_video_context_destroy_render_thread (context);
+
+  if (context_egl->caps) {
+    gst_caps_unref (context_egl->caps);
+  }
+
+  G_OBJECT_CLASS (gst_nv_video_context_egl_parent_class)->finalize (object);
+
+  GST_DEBUG_OBJECT (context, "finalize end");
+}
+
+static void
+gst_nv_video_context_egl_class_init (GstNvVideoContextEglClass * klass)
+{
+  GstNvVideoContextClass *context_class = (GstNvVideoContextClass *) klass;
+
+  context_class->create = GST_DEBUG_FUNCPTR (gst_nv_video_context_egl_create);
+  context_class->setup = GST_DEBUG_FUNCPTR (gst_nv_video_context_egl_setup);
+  context_class->get_caps =
+      GST_DEBUG_FUNCPTR (gst_nv_video_context_egl_getcaps);
+  context_class->show_frame =
+      GST_DEBUG_FUNCPTR (gst_nv_video_context_egl_show_frame);
+  context_class->handle_eos =
+      GST_DEBUG_FUNCPTR (gst_nv_video_context_egl_handle_eos);
+  context_class->handle_drc =
+      GST_DEBUG_FUNCPTR (gst_nv_video_context_egl_handle_drc);
+  context_class->handle_tearing =
+      GST_DEBUG_FUNCPTR (gst_nv_video_context_egl_handle_tearing);
+  context_class->cleanup = GST_DEBUG_FUNCPTR (gst_nv_video_context_egl_cleanup);
+
+  G_OBJECT_CLASS (klass)->finalize = gst_nv_video_context_egl_finalize;
+}
+
+static void
+gst_nv_video_context_egl_init (GstNvVideoContextEgl * context_egl)
+{
+  GstNvVideoContext *context = (GstNvVideoContext *) context_egl;
+
+  context->type = GST_NV_VIDEO_CONTEXT_TYPE_EGL;
+
+  context_egl->context = NULL;
+  context_egl->display = NULL;
+  context_egl->surface = NULL;
+  context_egl->config = NULL;
+
+  context_egl->surface_width = 0;
+  context_egl->surface_height = 0;
+
+  context_egl->last_buf = NULL;
+
+  context_egl->is_drc_on = 0;
+}
+
+GstNvVideoContextEgl *
+gst_nv_video_context_egl_new (GstNvVideoDisplay * display)
+{
+  GstNvVideoContextEgl *ret;
+  GstCaps *caps = NULL;
+  guint i, n;
+
+  // for now we need x11 display for EGL context.
+  if ((gst_nv_video_display_get_handle_type (display) &
+          GST_NV_VIDEO_DISPLAY_TYPE_X11)
+      == 0) {
+    return NULL;
+  }
+
+  ret = g_object_new (GST_TYPE_NV_VIDEO_CONTEXT_EGL, NULL);
+  gst_object_ref_sink (ret);
+
+  // TODO: query from egl
+  caps = gst_caps_new_empty ();
+  // Software buffer caps
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_RGBA));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_BGRA));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_ARGB));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_ABGR));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_RGBx));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_BGRx));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_xRGB));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_xBGR));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_AYUV));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_Y444));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_RGB));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_BGR));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_I420));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_YV12));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_NV12));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_NV21));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_Y42B));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_Y41B));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_RGB16));
+  n = gst_caps_get_size(caps);
+
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_NV12));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_NV21));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_I420));
+  gst_caps_append (caps,
+      gst_nv_video_context_egl_new_template_caps (GST_VIDEO_FORMAT_RGBA));
+  for (i = n; i < n+4; i++) {
+    GstCapsFeatures *features = gst_caps_features_new ("memory:NVMM", NULL);
+    gst_caps_set_features (caps, i, features);
+  }
+  gst_caps_replace (&ret->caps, caps);
+  gst_caps_unref (caps);
+
+  return ret;
+}

gst-plugins-nv-video-sinks/common/egl/context_egl.h

@@ -0,0 +1,75 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV_VIDEO_CONTEXT_EGL_H__
+#define __GST_NV_VIDEO_CONTEXT_EGL_H__
+
+#include "context.h"
+#include "renderer.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_NV_VIDEO_CONTEXT_EGL \
+    (gst_nv_video_context_egl_get_type())
+#define GST_NV_VIDEO_CONTEXT_EGL(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_NV_VIDEO_CONTEXT_EGL, GstNvVideoContextEgl))
+#define GST_NV_VIDEO_CONTEXT_EGL_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV_VIDEO_CONTEXT_EGL, GstNvVideoContextEglClass))
+#define GST_IS_NV_VIDEO_CONTEXT_EGL(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV_VIDEO_CONTEXT_EGL))
+#define GST_IS_NV_VIDEO_CONTEXT_EGL_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV_VIDEO_CONTEXT_EGL))
+#define GST_NV_VIDEO_CONTEXT_EGL_CAST(obj) \
+    ((GstNvVideoContextEgl*)(obj))
+
+typedef struct _GstNvVideoContextEgl GstNvVideoContextEgl;
+typedef struct _GstNvVideoContextEglClass GstNvVideoContextEglClass;
+
+struct _GstNvVideoContextEgl
+{
+  GstNvVideoContext parent;
+
+  gpointer context;
+  gpointer display;
+  gpointer surface;
+  gpointer config;
+
+  gint surface_width;
+  gint surface_height;
+
+  GstNvVideoRenderer *renderer;
+
+  GstCaps *caps;
+
+  GstBuffer *last_buf;
+
+  gint is_drc_on;
+};
+
+struct _GstNvVideoContextEglClass
+{
+  GstNvVideoContextClass parent_class;
+};
+
+G_GNUC_INTERNAL
+GstNvVideoContextEgl * gst_nv_video_context_egl_new (GstNvVideoDisplay * display);
+
+GType gst_nv_video_context_egl_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_CONTEXT_EGL_H__ */

gst-plugins-nv-video-sinks/common/gstnvvideofwd.h

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV_VIDEO_FWD_H__
+#define __GST_NV_VIDEO_FWD_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GstNvVideoDisplay GstNvVideoDisplay;
+typedef struct _GstNvVideoDisplayClass GstNvVideoDisplayClass;
+
+typedef struct _GstNvVideoWindow GstNvVideoWindow;
+typedef struct _GstNvVideoWindowClass GstNvVideoWindowClass;
+
+typedef struct _GstNvVideoContext GstNvVideoContext;
+typedef struct _GstNvVideoContextClass GstNvVideoContextClass;
+typedef struct _GstNvVideoContextPrivate GstNvVideoContextPrivate;
+
+typedef struct _GstNvVideoRenderer GstNvVideoRenderer;
+typedef struct _GstNvVideoRendererClass GstNvVideoRendererClass;
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_FWD_H__ */

gst-plugins-nv-video-sinks/common/renderer.c

@@ -0,0 +1,165 @@
+/*
+ * Copyright (c) 2018-2020, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include <gst/base/gstdataqueue.h>
+
+#include "renderer.h"
+#include "context.h"
+
+#if NV_VIDEO_SINKS_HAS_GL
+#include "renderer_gl.h"
+#endif
+
+#define GST_CAT_DEFAULT gst_debug_nv_video_renderer
+GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
+
+G_DEFINE_ABSTRACT_TYPE (GstNvVideoRenderer, gst_nv_video_renderer,
+    GST_TYPE_OBJECT);
+
+static void
+gst_nv_video_renderer_init (GstNvVideoRenderer * renderer)
+{
+}
+
+static void
+gst_nv_video_renderer_class_init (GstNvVideoRendererClass * klass)
+{
+}
+
+GstNvVideoRenderer *
+gst_nv_video_renderer_new (GstNvVideoContext * context, const char *name)
+{
+  GstNvVideoRenderer *renderer = NULL;
+  static volatile gsize debug_init = 0;
+
+  if (g_once_init_enter (&debug_init)) {
+    GST_DEBUG_CATEGORY_INIT (gst_debug_nv_video_renderer, "nvvideorenderer", 0,
+        "nvvideorenderer");
+    g_once_init_leave (&debug_init, 1);
+  }
+
+  if (!name) {
+    GST_ERROR ("renderer name not valid");
+  }
+
+#if NV_VIDEO_SINKS_HAS_GL
+  if (g_strstr_len (name, 2, "gl")) {
+    renderer = GST_NV_VIDEO_RENDERER (gst_nv_video_renderer_gl_new (context));
+  }
+#endif
+
+  if (!renderer) {
+    GST_ERROR ("couldn't create renderer name = %s", name);
+    return NULL;
+  }
+
+  renderer->format = context->configured_info.finfo->format;
+
+  GST_DEBUG_OBJECT (renderer, "created %s renderer for context %" GST_PTR_FORMAT, name, context);
+
+  return renderer;
+}
+
+gboolean
+gst_nv_video_renderer_cuda_init (GstNvVideoContext * context, GstNvVideoRenderer * renderer)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  return renderer_class->cuda_init (context, renderer);
+}
+
+void
+gst_nv_video_renderer_cuda_cleanup (GstNvVideoContext * context, GstNvVideoRenderer * renderer)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  renderer_class->cuda_cleanup (context, renderer);
+}
+
+void
+gst_nv_video_renderer_cleanup (GstNvVideoRenderer * renderer)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  renderer_class->cleanup (renderer);
+}
+
+gboolean
+gst_nv_video_renderer_setup (GstNvVideoRenderer * renderer)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  return renderer_class->setup (renderer);
+}
+
+void
+gst_nv_video_renderer_update_viewport (GstNvVideoRenderer * renderer, int width, int height)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  renderer_class->update_viewport (renderer, width, height);
+}
+
+gboolean
+gst_nv_video_renderer_fill_texture (GstNvVideoContext *context, GstNvVideoRenderer * renderer, GstBuffer * buf)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  return renderer_class->fill_texture (context, renderer, buf);
+}
+
+gboolean
+gst_nv_video_renderer_cuda_buffer_copy (GstNvVideoContext *context, GstNvVideoRenderer * renderer, GstBuffer * buf)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  return renderer_class->cuda_buffer_copy (context, renderer, buf);
+}
+
+gboolean
+gst_nv_video_renderer_draw_2D_Texture (GstNvVideoRenderer * renderer)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  return renderer_class->draw_2D_Texture (renderer);
+}
+
+gboolean
+gst_nv_video_renderer_draw_eglimage (GstNvVideoRenderer * renderer, void * image)
+{
+  GstNvVideoRendererClass *renderer_class;
+
+  renderer_class = GST_NV_VIDEO_RENDERER_GET_CLASS (renderer);
+
+  return renderer_class->draw_eglimage (renderer, image);
+}

gst-plugins-nv-video-sinks/common/renderer.h

@@ -0,0 +1,99 @@
+/*
+ * Copyright (c) 2018-2020, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV_VIDEO_RENDERER_H__
+#define __GST_NV_VIDEO_RENDERER_H__
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+
+#include "gstnvvideofwd.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_NV_VIDEO_RENDERER \
+    (gst_nv_video_renderer_get_type())
+#define GST_NV_VIDEO_RENDERER(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_NV_VIDEO_RENDERER, GstNvVideoRenderer))
+#define GST_NV_VIDEO_RENDERER_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV_VIDEO_RENDERER, GstNvVideoRendererClass))
+#define GST_IS_NV_VIDEO_RENDERER(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV_VIDEO_RENDERER))
+#define GST_IS_NV_VIDEO_RENDERER_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV_VIDEO_RENDERER))
+#define GST_NV_VIDEO_RENDERER_GET_CLASS(o) \
+    (G_TYPE_INSTANCE_GET_CLASS((o), GST_TYPE_NV_VIDEO_RENDERER, GstNvVideoRendererClass))
+
+struct _GstNvVideoRendererClass
+{
+  GstObjectClass parent_class;
+
+  gboolean (*cuda_init)          (GstNvVideoContext *context, GstNvVideoRenderer * renderer);
+  void (*cuda_cleanup)           (GstNvVideoContext *context, GstNvVideoRenderer * renderer);
+  gboolean  (*setup)             (GstNvVideoRenderer * renderer);
+  void      (*cleanup)           (GstNvVideoRenderer * renderer);
+  void      (*update_viewport)   (GstNvVideoRenderer * renderer, int width, int height);
+  gboolean  (*fill_texture)     (GstNvVideoContext *context, GstNvVideoRenderer * renderer, GstBuffer * buf);
+  gboolean  (*cuda_buffer_copy)     (GstNvVideoContext *context, GstNvVideoRenderer * renderer, GstBuffer * buf);
+  gboolean  (*draw_2D_Texture)     (GstNvVideoRenderer * renderer);
+  gboolean  (*draw_eglimage)     (GstNvVideoRenderer * renderer, void * image);
+};
+
+struct _GstNvVideoRenderer
+{
+  GstObject parent;
+
+  GstNvVideoContext * context;
+
+  GstVideoFormat format;
+};
+
+GST_EXPORT
+GstNvVideoRenderer * gst_nv_video_renderer_new (GstNvVideoContext * context, const char *name);
+
+GST_EXPORT
+gboolean gst_nv_video_renderer_cuda_init (GstNvVideoContext * context, GstNvVideoRenderer * renderer);
+
+GST_EXPORT
+void gst_nv_video_renderer_cuda_cleanup (GstNvVideoContext * context, GstNvVideoRenderer * renderer);
+
+GST_EXPORT
+gboolean gst_nv_video_renderer_setup (GstNvVideoRenderer * renderer);
+
+GST_EXPORT
+void gst_nv_video_renderer_cleanup (GstNvVideoRenderer * renderer);
+
+GST_EXPORT
+void gst_nv_video_renderer_update_viewport (GstNvVideoRenderer * renderer, int width, int height);
+
+GST_EXPORT
+gboolean gst_nv_video_renderer_fill_texture (GstNvVideoContext *context, GstNvVideoRenderer * renderer, GstBuffer * buf);
+
+GST_EXPORT
+gboolean gst_nv_video_renderer_cuda_buffer_copy (GstNvVideoContext *context, GstNvVideoRenderer * renderer, GstBuffer * buf);
+
+GST_EXPORT
+gboolean gst_nv_video_renderer_draw_2D_Texture (GstNvVideoRenderer * renderer);
+
+GST_EXPORT
+gboolean gst_nv_video_renderer_draw_eglimage (GstNvVideoRenderer * renderer, void * image);
+
+GType gst_nv_video_renderer_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_RENDERER_H__ */

gst-plugins-nv-video-sinks/common/renderer/renderer_gl.h

@@ -0,0 +1,93 @@
+/*
+ * Copyright (c) 2018-2020, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV_VIDEO_RENDERER_GL_H__
+#define __GST_NV_VIDEO_RENDERER_GL_H__
+
+#include "context.h"
+
+#include <GLES2/gl2.h>
+#include <GLES2/gl2ext.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_NV_VIDEO_RENDERER_GL \
+    (gst_nv_video_renderer_gl_get_type())
+#define GST_NV_VIDEO_RENDERER_GL(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_NV_VIDEO_RENDERER_GL, GstNvVideoRendererGl))
+#define GST_NV_VIDEO_RENDERER_GL_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV_VIDEO_RENDERER_GL, GstNvVideoRendererGlClass))
+#define GST_IS_NV_VIDEO_RENDERER_GL(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV_VIDEO_RENDERER_GL))
+#define GST_IS_NV_VIDEO_RENDERER_GL_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV_VIDEO_RENDERER_GL))
+#define GST_NV_VIDEO_RENDERER_GL_CAST(obj) \
+    ((GstNvVideoRendererGl*)(obj))
+
+typedef struct _GstNvVideoRendererGl GstNvVideoRendererGl;
+typedef struct _GstNvVideoRendererGlClass GstNvVideoRendererGlClass;
+
+#define RENDERER_NUM_GL_TEXTURES 1
+
+struct _GstNvVideoRendererGl
+{
+  GstNvVideoRenderer parent;
+
+  GLuint vert_obj[3]; /* EGL frame, 2D frame, 2D frame border*/
+  GLuint frag_obj[3]; /* EGL frame, 2D frame, 2D frame border*/
+  GLuint prog_obj[3]; /* EGL frame, 2D frame, 2D frame border*/
+
+  GLint pos;
+  GLint tex_pos;
+  GLint tex_sampler;
+  GLsizei num_textures;
+  GLuint textures[RENDERER_NUM_GL_TEXTURES];
+  unsigned int vertex_buffer;
+  unsigned int index_buffer;
+
+  //Defining different attribs and uniforms for 2D textures
+  GLuint position_loc[2]; /* Frame and Border */
+  GLuint texpos_loc[1]; /* Frame */
+  GLuint tex_scale_loc[1][3]; /* [frame] RGB/Y, U/UV, V */
+  GLuint tex_loc[1][3]; /* [frame] RGB/Y, U/UV, V */
+  unsigned int vertex_buffer_2d;
+  unsigned int index_buffer_2d;
+  gint num_textures_2d;
+  GLuint textures_2d[3];
+  GLuint stride[3];
+
+  PFNGLEGLIMAGETARGETTEXTURE2DOESPROC glEGLImageTargetTexture2DOES;
+};
+
+struct _GstNvVideoRendererGlClass
+{
+  GstNvVideoRendererClass parent_class;
+};
+
+G_GNUC_INTERNAL
+GstNvVideoRendererGl * gst_nv_video_renderer_gl_new (GstNvVideoContext * context);
+void
+gst_nv_video_renderer_gl_process_shaders (GstNvVideoRenderer * renderer, gchar ** frag_prog, const gchar *texnames[], GstVideoFormat format);
+
+gboolean
+gst_nv_video_renderer_gl_cuda_init (GstNvVideoContext * context, GstNvVideoRenderer * renderer);
+
+GType gst_nv_video_renderer_gl_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_RENDERER_GL_H__ */

gst-plugins-nv-video-sinks/common/window.c

@@ -0,0 +1,125 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include "window.h"
+
+#if NV_VIDEO_SINKS_HAS_X11
+#include "window_x11.h"
+#endif
+
+#define GST_CAT_DEFAULT gst_debug_nv_video_window
+GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
+
+#define gst_nv_video_window_parent_class parent_class
+G_DEFINE_ABSTRACT_TYPE (GstNvVideoWindow, gst_nv_video_window, GST_TYPE_OBJECT);
+
+static void
+gst_nv_video_window_finalize (GObject * object)
+{
+  GstNvVideoWindow *window = GST_NV_VIDEO_WINDOW (object);
+
+  g_weak_ref_clear (&window->context);
+  gst_object_unref (window->display);
+
+  G_OBJECT_CLASS (gst_nv_video_window_parent_class)->finalize (object);
+}
+
+static void
+gst_nv_video_window_init (GstNvVideoWindow * window)
+{
+  g_weak_ref_init (&window->context, NULL);
+}
+
+static void
+gst_nv_video_window_class_init (GstNvVideoWindowClass * klass)
+{
+  G_OBJECT_CLASS (klass)->finalize = gst_nv_video_window_finalize;
+}
+
+GstNvVideoWindow *
+gst_nv_video_window_new (GstNvVideoDisplay * display)
+{
+  GstNvVideoWindow *window = NULL;
+  static volatile gsize debug_init = 0;
+  const gchar *winsys_name = NULL;
+
+  if (g_once_init_enter (&debug_init)) {
+    GST_DEBUG_CATEGORY_INIT (gst_debug_nv_video_window, "nvvideowindow", 0,
+        "nvvideowindow");
+    g_once_init_leave (&debug_init, 1);
+  }
+
+  winsys_name = g_getenv ("GST_NV_VIDEO_WINSYS");
+
+#if NV_VIDEO_SINKS_HAS_X11
+  if (!window && (!winsys_name || g_strstr_len (winsys_name, 3, "x11"))) {
+    window = GST_NV_VIDEO_WINDOW (gst_nv_video_window_x11_new (NULL));
+  }
+#endif
+
+  if (!window) {
+    GST_ERROR ("couldn't create window. GST_NV_VIDEO_WINSYS = %s",
+        winsys_name ? winsys_name : NULL);
+    return NULL;
+  }
+
+  window->display = gst_object_ref (display);
+
+  GST_DEBUG_OBJECT (window, "created window for display %" GST_PTR_FORMAT,
+      display);
+
+  return window;
+}
+
+/* create new window handle after destroying existing */
+gboolean
+gst_nv_video_window_create_window (GstNvVideoWindow * window, gint x,
+    gint y, gint width, gint height)
+{
+  GstNvVideoWindowClass *window_class;
+
+  window_class = GST_NV_VIDEO_WINDOW_GET_CLASS (window);
+
+  return window_class->create_window (window, x, y, width, height);
+}
+
+gboolean
+gst_nv_video_window_set_handle (GstNvVideoWindow * window, guintptr id)
+{
+  GstNvVideoWindowClass *window_class;
+
+  window_class = GST_NV_VIDEO_WINDOW_GET_CLASS (window);
+
+  return window_class->set_handle (window, id);
+}
+
+guintptr
+gst_nv_video_window_get_handle (GstNvVideoWindow * window)
+{
+  GstNvVideoWindowClass *window_class;
+  window_class = GST_NV_VIDEO_WINDOW_GET_CLASS (window);
+
+  return window_class->get_handle (window);
+}
+
+GstNvVideoContext *
+gst_nv_video_window_get_context (GstNvVideoWindow * window)
+{
+  g_return_val_if_fail (GST_IS_NV_VIDEO_WINDOW (window), NULL);
+
+  return (GstNvVideoContext *) g_weak_ref_get (&window->context);
+}

gst-plugins-nv-video-sinks/common/window.h

@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV_VIDEO_WINDOW_H__
+#define __GST_NV_VIDEO_WINDOW_H__
+
+#include <gst/gst.h>
+#include <gst/video/gstvideosink.h>
+#include <gst/video/video.h>
+
+#include "gstnvvideofwd.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_NV_VIDEO_WINDOW \
+    (gst_nv_video_window_get_type())
+#define GST_NV_VIDEO_WINDOW(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_NV_VIDEO_WINDOW, GstNvVideoWindow))
+#define GST_NV_VIDEO_WINDOW_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV_VIDEO_WINDOW, GstNvVideoWindowClass))
+#define GST_IS_NV_VIDEO_WINDOW(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV_VIDEO_WINDOW))
+#define GST_IS_NV_VIDEO_WINDOW_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV_VIDEO_WINDOW))
+#define GST_NV_VIDEO_WINDOW_CAST(obj) \
+    ((GstNvVideoWindow*)(obj))
+#define GST_NV_VIDEO_WINDOW_GET_CLASS(o) \
+    (G_TYPE_INSTANCE_GET_CLASS((o), GST_TYPE_NV_VIDEO_WINDOW, GstNvVideoWindowClass))
+
+struct _GstNvVideoWindowClass
+{
+  GstObjectClass parent_class;
+
+  guintptr (*get_handle)    (GstNvVideoWindow * window);
+  gboolean (*set_handle)    (GstNvVideoWindow * window, guintptr id);
+  gboolean (*create_window) (GstNvVideoWindow * window, gint x, gint y, gint width, gint height);
+  gboolean (*draw)          (GstNvVideoWindow * window, GstBuffer * buf);
+};
+
+struct _GstNvVideoWindow
+{
+  GstObject parent;
+
+  GstNvVideoDisplay *display;
+
+  GWeakRef context;
+};
+
+GST_EXPORT
+GstNvVideoWindow *gst_nv_video_window_new (GstNvVideoDisplay * display);
+GST_EXPORT
+gboolean gst_nv_video_window_create_window (GstNvVideoWindow * window, gint x, gint y, gint width, gint height);
+GST_EXPORT
+gboolean gst_nv_video_window_set_handle (GstNvVideoWindow * window, guintptr id);
+GST_EXPORT
+guintptr gst_nv_video_window_get_handle (GstNvVideoWindow * window);
+GST_EXPORT
+GstNvVideoContext *gst_nv_video_window_get_context (GstNvVideoWindow * window);
+
+GType gst_nv_video_window_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_WINDOW_H__ */

gst-plugins-nv-video-sinks/common/x11/display_x11.c

@@ -0,0 +1,85 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include "display_x11.h"
+
+G_GNUC_INTERNAL extern GstDebugCategory *gst_debug_nv_video_display;
+#define GST_CAT_DEFAULT gst_debug_nv_video_display
+
+G_DEFINE_TYPE (GstNvVideoDisplayX11, gst_nv_video_display_x11,
+    GST_TYPE_NV_VIDEO_DISPLAY);
+
+static void
+gst_nv_video_display_x11_finalize (GObject * object)
+{
+  GstNvVideoDisplayX11 *display_x11 = GST_NV_VIDEO_DISPLAY_X11 (object);
+
+  GST_DEBUG ("closing X11 display connection, handle=%p", display_x11->dpy);
+
+  if (display_x11->dpy) {
+    XCloseDisplay (display_x11->dpy);
+  }
+
+  GST_DEBUG ("closed X11 display connection");
+
+  G_OBJECT_CLASS (gst_nv_video_display_x11_parent_class)->finalize (object);
+}
+
+static guintptr
+gst_nv_video_display_x11_get_handle (GstNvVideoDisplay * display)
+{
+  return (guintptr) GST_NV_VIDEO_DISPLAY_X11 (display)->dpy;
+}
+
+static void
+gst_nv_video_display_x11_class_init (GstNvVideoDisplayX11Class * klass)
+{
+  GST_NV_VIDEO_DISPLAY_CLASS (klass)->get_handle =
+      GST_DEBUG_FUNCPTR (gst_nv_video_display_x11_get_handle);
+  G_OBJECT_CLASS (klass)->finalize = gst_nv_video_display_x11_finalize;
+}
+
+static void
+gst_nv_video_display_x11_init (GstNvVideoDisplayX11 * display_x11)
+{
+  GstNvVideoDisplay *display = (GstNvVideoDisplay *) display_x11;
+
+  display->type = GST_NV_VIDEO_DISPLAY_TYPE_X11;
+
+  GST_DEBUG_OBJECT (display, "init done");
+}
+
+GstNvVideoDisplayX11 *
+gst_nv_video_display_x11_new (const gchar * name)
+{
+  GstNvVideoDisplayX11 *ret;
+
+  ret = g_object_new (GST_TYPE_NV_VIDEO_DISPLAY_X11, NULL);
+  gst_object_ref_sink (ret);
+
+  ret->dpy = XOpenDisplay (NULL);
+
+  if (!ret->dpy) {
+    GST_ERROR ("failed to open X11 display connection");
+    gst_object_unref (ret);
+    return NULL;
+  }
+
+  GST_DEBUG ("opened X11 display connection handle=%p", ret->dpy);
+
+  return ret;
+}

gst-plugins-nv-video-sinks/common/x11/display_x11.h

@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV_VIDEO_DISPLAY_X11_H__
+#define __GST_NV_VIDEO_DISPLAY_X11_H__
+
+#include <X11/Xlib.h>
+
+#include "display.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_NV_VIDEO_DISPLAY_X11 \
+    (gst_nv_video_display_x11_get_type())
+#define GST_NV_VIDEO_DISPLAY_X11(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_NV_VIDEO_DISPLAY_X11, GstNvVideoDisplayX11))
+#define GST_NV_VIDEO_DISPLAY_X11_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV_VIDEO_DISPLAY_X11, GstNvVideoDisplayX11Class))
+#define GST_IS_NV_VIDEO_DISPLAY_X11(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV_VIDEO_DISPLAY_X11))
+#define GST_IS_NV_VIDEO_DISPLAY_X11_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV_VIDEO_DISPLAY_X11))
+#define GST_NV_VIDEO_DISPLAY_X11_CAST(obj) \
+    ((GstNvVideoDisplayX11*)(obj))
+
+typedef struct _GstNvVideoDisplayX11 GstNvVideoDisplayX11;
+typedef struct _GstNvVideoDisplayX11Class GstNvVideoDisplayX11Class;
+
+struct _GstNvVideoDisplayX11
+{
+  GstNvVideoDisplay parent;
+
+  Display *dpy;
+};
+
+struct _GstNvVideoDisplayX11Class
+{
+  GstNvVideoDisplayClass parent_class;
+};
+
+GST_EXPORT
+GstNvVideoDisplayX11 * gst_nv_video_display_x11_new (const gchar * name);
+
+GType gst_nv_video_display_x11_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_DISPLAY_X11_H__ */

gst-plugins-nv-video-sinks/common/x11/window_x11.c

@@ -0,0 +1,157 @@
+/**
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA Corporation and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA Corporation is strictly prohibited.
+ */
+
+#include "context.h"
+#include "display_x11.h"
+#include "window_x11.h"
+#include <X11/Xutil.h>
+
+G_GNUC_INTERNAL extern GstDebugCategory *gst_debug_nv_video_window;
+#define GST_CAT_DEFAULT gst_debug_nv_video_window
+
+#define gst_nv_video_window_x11_parent_class parent_class
+G_DEFINE_TYPE (GstNvVideoWindowX11, gst_nv_video_window_x11,
+    GST_TYPE_NV_VIDEO_WINDOW);
+
+static void
+gst_nv_video_window_x11_destroy (GstNvVideoWindow * window)
+{
+  GstNvVideoWindowX11 *window_x11 = GST_NV_VIDEO_WINDOW_X11 (window);
+  GstNvVideoDisplayX11 *display_x11 = (GstNvVideoDisplayX11 *) window->display;
+
+  if (window_x11->internal_window) {
+    GST_DEBUG_OBJECT (window, "destroy internal window %" G_GUINTPTR_FORMAT,
+        window_x11->handle);
+
+    XUnmapWindow (display_x11->dpy, window_x11->handle);
+    XDestroyWindow (display_x11->dpy, window_x11->handle);
+    XSync (display_x11->dpy, FALSE);
+    window_x11->internal_window = FALSE;
+    window_x11->handle = 0;
+  } else {
+    GST_DEBUG_OBJECT (window, "unset foreign window handle %" G_GUINTPTR_FORMAT,
+        window_x11->handle);
+    window_x11->handle = 0;
+  }
+}
+
+static void
+gst_nv_video_window_x11_finalize (GObject * object)
+{
+  GstNvVideoWindow *window = GST_NV_VIDEO_WINDOW (object);
+
+  GST_DEBUG_OBJECT (window, "finalize begin");
+
+  gst_nv_video_window_x11_destroy (window);
+
+  G_OBJECT_CLASS (gst_nv_video_window_x11_parent_class)->finalize (object);
+
+  GST_DEBUG_OBJECT (window, "finalize end");
+}
+
+static guintptr
+gst_nv_video_window_x11_get_handle (GstNvVideoWindow * window)
+{
+  GstNvVideoWindowX11 *window_x11 = GST_NV_VIDEO_WINDOW_X11 (window);
+
+  return window_x11->handle;
+}
+
+static gboolean
+gst_nv_video_window_x11_set_handle (GstNvVideoWindow * window, guintptr id)
+{
+  GstNvVideoWindowX11 *window_x11 = GST_NV_VIDEO_WINDOW_X11 (window);
+
+  gst_nv_video_window_x11_destroy (window);
+  window_x11->handle = id;
+
+  GST_DEBUG_OBJECT (window, "set window handle to %" G_GUINTPTR_FORMAT, id);
+
+  return FALSE;
+}
+
+static gboolean
+gst_nv_video_window_x11_create (GstNvVideoWindow * window, gint x,
+    gint y, gint width, gint height)
+{
+  GstNvVideoWindowX11 *window_x11 = GST_NV_VIDEO_WINDOW_X11 (window);
+  GstNvVideoDisplayX11 *display_x11 = (GstNvVideoDisplayX11 *) window->display;
+  Display *dpy = display_x11->dpy;
+  int screen = DefaultScreen (dpy);
+
+  XSizeHints    hints = {0};
+  hints.flags  = PPosition ;
+  hints.x = x;
+  hints.y = y;
+  // GstNvVideoWindow doesn't have destroy_winow method (like create_window)
+  // and GstNvVideoWindow object can't have multiple X windows. So if
+  // upper layer has existing window (foreign or internal), unset/destroy it.
+  //
+  // TODO: In case of existing internal window, we might able to re-use it
+  // with XResizeWindow.
+  gst_nv_video_window_x11_destroy (window);
+
+  window_x11->handle = XCreateSimpleWindow (dpy, RootWindow (dpy, screen),
+      hints.x, hints.y, width, height, 1,
+      BlackPixel (dpy, screen), WhitePixel (dpy, screen));
+
+  if (!window_x11->handle) {
+    GST_ERROR_OBJECT (window, "failed to create internal window\n");
+    return FALSE;
+  }
+
+  window_x11->internal_window = TRUE;
+
+  XSetWindowBackgroundPixmap (dpy, window_x11->handle, None);
+  XSetNormalHints(dpy, window_x11->handle, &hints);
+  XMapRaised (dpy, window_x11->handle);
+  XSync (dpy, FALSE);
+
+  GST_DEBUG_OBJECT (window,
+      "created internal window %dx%d, handle=%" G_GUINTPTR_FORMAT, width,
+      height, window_x11->handle);
+
+  return TRUE;
+}
+
+static void
+gst_nv_video_window_x11_class_init (GstNvVideoWindowX11Class * klass)
+{
+  GstNvVideoWindowClass *window_class = (GstNvVideoWindowClass *) klass;
+
+  window_class->create_window =
+      GST_DEBUG_FUNCPTR (gst_nv_video_window_x11_create);
+  window_class->get_handle =
+      GST_DEBUG_FUNCPTR (gst_nv_video_window_x11_get_handle);
+  window_class->set_handle =
+      GST_DEBUG_FUNCPTR (gst_nv_video_window_x11_set_handle);
+
+  G_OBJECT_CLASS (klass)->finalize = gst_nv_video_window_x11_finalize;
+}
+
+static void
+gst_nv_video_window_x11_init (GstNvVideoWindowX11 * window)
+{
+  window->handle = 0;
+  window->internal_window = FALSE;
+
+  GST_DEBUG_OBJECT (window, "init done");
+}
+
+GstNvVideoWindowX11 *
+gst_nv_video_window_x11_new (const gchar * name)
+{
+  GstNvVideoWindowX11 *ret;
+
+  ret = g_object_new (GST_TYPE_NV_VIDEO_WINDOW_X11, NULL);
+  gst_object_ref_sink (ret);
+
+  return ret;
+}

gst-plugins-nv-video-sinks/common/x11/window_x11.h

@@ -0,0 +1,54 @@
+/**
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA Corporation and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA Corporation is strictly prohibited.
+ */
+
+#ifndef __GST_NV_VIDEO_WINDOW_X11_H__
+#define __GST_NV_VIDEO_WINDOW_X11_H__
+
+#include "window.h"
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_NV_VIDEO_WINDOW_X11 \
+    (gst_nv_video_window_x11_get_type())
+#define GST_NV_VIDEO_WINDOW_X11(obj) \
+    (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_NV_VIDEO_WINDOW_X11, GstNvVideoWindowX11))
+#define GST_NV_VIDEO_WINDOW_X11_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV_VIDEO_WINDOW_X11, GstNvVideoWindowX11Class))
+#define GST_IS_NV_VIDEO_WINDOW_X11(obj) \
+    (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV_VIDEO_WINDOW_X11))
+#define GST_IS_NV_VIDEO_WINDOW_X11_CLASS(klass) \
+    (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV_VIDEO_WINDOW_X11))
+#define GST_NV_VIDEO_WINDOW_X11_CAST(obj) \
+    ((GstNvVideoWindowX11*)(obj))
+
+typedef struct _GstNvVideoWindowX11 GstNvVideoWindowX11;
+typedef struct _GstNvVideoWindowX11Class GstNvVideoWindowX11Class;
+
+struct _GstNvVideoWindowX11
+{
+  GstNvVideoWindow parent;
+
+  guintptr handle;
+  gboolean internal_window;
+};
+
+struct _GstNvVideoWindowX11Class
+{
+  GstNvVideoWindowClass parent_class;
+};
+
+GST_EXPORT
+GstNvVideoWindowX11 *gst_nv_video_window_x11_new (const gchar * name);
+
+GType gst_nv_video_window_x11_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV_VIDEO_WINDOW_X11_H__ */

gst-plugins-nv-video-sinks/gstnvvideosinks.c

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2018, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include <gst/gst.h>
+
+#if NV_VIDEO_SINKS_HAS_NV3DSINK
+#include "nv3dsink/gstnv3dsink.h"
+#endif
+
+#if NV_VIDEO_SINKS_HAS_X11
+#include <X11/Xlib.h>
+#endif
+
+GST_DEBUG_CATEGORY_STATIC (gst_nvvideosinks_debug);
+#define GST_CAT_DEFAULT gst_nvvideosinks_debug
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+#if NV_VIDEO_SINKS_HAS_X11
+  XInitThreads ();
+#endif
+
+  /* debug category for fltering log messages */
+  GST_DEBUG_CATEGORY_INIT (gst_nvvideosinks_debug, "nvvideosinks", 0,
+      "Nvidia video sinks");
+
+#if NV_VIDEO_SINKS_HAS_NV3DSINK
+  if (!gst_element_register (plugin, "nv3dsink", GST_RANK_SECONDARY,
+          GST_TYPE_NV3DSINK)) {
+    return FALSE;
+  }
+#endif
+
+  return TRUE;
+}
+
+/* PACKAGE is usually set by autotools but we are not using autotools
+ * to compile this code, so set it ourselves. GST_PLUGIN_DEFINE needs
+ * PACKAGE to be defined.
+ */
+#ifndef PACKAGE
+#define PACKAGE "gst-plugins-nv-video-sinks"
+#endif
+
+/* gstreamer looks for this structure to register plugins */
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    nvvideosinks,
+    "Nvidia Video Sink Plugins",
+    plugin_init, "0.0.1", "Proprietary", "Nvidia Video Sink Plugins",
+    "http://nvidia.com/")

gst-plugins-nv-video-sinks/nv3dsink/gstnv3dsink.c

@@ -0,0 +1,558 @@
+/*
+ * Copyright (c) 2018-2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#include "gstnv3dsink.h"
+#include "display.h"
+#include "context.h"
+#include "window.h"
+
+GST_DEBUG_CATEGORY (gst_debug_nv3dsink);
+#define GST_CAT_DEFAULT gst_debug_nv3dsink
+
+GST_DEBUG_CATEGORY_EXTERN (GST_CAT_PERFORMANCE);
+
+#define GST_CAPS_FEATURE_MEMORY_NVMM "memory:NVMM"
+
+static void gst_nv3dsink_videooverlay_init (GstVideoOverlayInterface * iface);
+static void gst_nv3dsink_set_window_handle (GstVideoOverlay * overlay,
+    guintptr id);
+static void gst_nv3dsink_expose (GstVideoOverlay * overlay);
+static void gst_nv3dsink_handle_events (GstVideoOverlay * overlay,
+    gboolean handle_events);
+static void gst_nv3dsink_set_render_rectangle (GstVideoOverlay * overlay,
+    gint x, gint y, gint width, gint height);
+
+/* Input capabilities. */
+static GstStaticPadTemplate gst_nv3dsink_sink_template_factory =
+    GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (
+        //Supported Software buffer caps
+        GST_VIDEO_CAPS_MAKE ("{ "
+            "RGBA, BGRA, ARGB, ABGR, " "RGBx, BGRx, xRGB, xBGR, "
+            "AYUV, Y444, I420, YV12, " "NV12, NV21, Y42B, Y41B, "
+            "RGB, BGR, RGB16 }")
+            ";"
+        GST_VIDEO_CAPS_MAKE_WITH_FEATURES (
+            GST_CAPS_FEATURE_MEMORY_NVMM,
+            "{ RGBA, BGRA, ARGB, ABGR, RGBx, BGRx, xRGB, xBGR, "
+            "AYUV, Y444, I420, YV12, NV12, NV21, Y42B, Y41B, "
+            "RGB, BGR, RGB16 }")
+        ));
+
+#define parent_class gst_nv3dsink_parent_class
+G_DEFINE_TYPE_WITH_CODE (GstNv3dSink, gst_nv3dsink, GST_TYPE_VIDEO_SINK,
+    G_IMPLEMENT_INTERFACE (GST_TYPE_VIDEO_OVERLAY,
+        gst_nv3dsink_videooverlay_init);
+    GST_DEBUG_CATEGORY_INIT (gst_debug_nv3dsink, "nv3dsink", 0,
+        "Nvidia 3D sink"));
+
+enum
+{
+  PROP_0,
+  PROP_WINDOW_X,
+  PROP_WINDOW_Y,
+  PROP_WINDOW_WIDTH,
+  PROP_WINDOW_HEIGHT
+};
+
+/* GObject vmethod implementations */
+
+static void
+gst_nv3dsink_videooverlay_init (GstVideoOverlayInterface * iface)
+{
+  iface->set_window_handle = gst_nv3dsink_set_window_handle;
+  iface->expose = gst_nv3dsink_expose;
+  iface->handle_events = gst_nv3dsink_handle_events;
+  iface->set_render_rectangle = gst_nv3dsink_set_render_rectangle;
+}
+
+static void
+gst_nv3dsink_set_window_handle (GstVideoOverlay * overlay, guintptr id)
+{
+  GstNv3dSink *nv3dsink = GST_NV3DSINK (overlay);
+  gint width = 0;
+  gint height = 0;
+
+  g_return_if_fail (GST_IS_NV3DSINK (nv3dsink));
+
+  g_mutex_lock (&nv3dsink->win_handle_lock);
+
+  GST_DEBUG_OBJECT (nv3dsink, "set_window_handle %" G_GUINT64_FORMAT, id);
+
+  if (gst_nv_video_window_get_handle (nv3dsink->window) == id) {
+    g_mutex_unlock (&nv3dsink->win_handle_lock);
+    return;
+  }
+
+  if (id) {
+    gst_nv_video_window_set_handle (nv3dsink->window, id);
+    g_mutex_unlock (&nv3dsink->win_handle_lock);
+    return;
+  }
+
+  if (!GST_VIDEO_SINK_WIDTH (nv3dsink) || !GST_VIDEO_SINK_HEIGHT (nv3dsink)) {
+    // window will be created during caps negotiation
+    g_mutex_unlock (&nv3dsink->win_handle_lock);
+    return;
+  }
+  // create internal window
+  if (nv3dsink->window_width != 0 && nv3dsink->window_height != 0) {
+    width = nv3dsink->window_width;
+    height = nv3dsink->window_height;
+  } else {
+    width = GST_VIDEO_SINK_WIDTH (nv3dsink);
+    height = GST_VIDEO_SINK_HEIGHT (nv3dsink);
+  }
+  if (!gst_nv_video_window_create_window (nv3dsink->window,
+          nv3dsink->window_x, nv3dsink->window_y, width, height)) {
+    g_mutex_unlock (&nv3dsink->win_handle_lock);
+    return;
+  }
+
+  g_mutex_unlock (&nv3dsink->win_handle_lock);
+}
+
+static void
+gst_nv3dsink_expose (GstVideoOverlay * overlay)
+{
+  GstNv3dSink *nv3dsink = GST_NV3DSINK (overlay);
+
+  GST_DEBUG_OBJECT (nv3dsink, "expose unimplemented");
+}
+
+static void
+gst_nv3dsink_handle_events (GstVideoOverlay * overlay, gboolean handle_events)
+{
+  GstNv3dSink *nv3dsink = GST_NV3DSINK (overlay);
+
+  GST_DEBUG_OBJECT (nv3dsink, "handle_events unimplemented");
+}
+
+static void
+gst_nv3dsink_set_render_rectangle (GstVideoOverlay * overlay, gint x, gint y,
+    gint width, gint height)
+{
+  GstNv3dSink *nv3dsink = GST_NV3DSINK (overlay);
+
+  g_return_if_fail (GST_IS_NV3DSINK (nv3dsink));
+
+  GST_DEBUG_OBJECT (nv3dsink, "set_render_rectangle unimplemented");
+
+  return;
+}
+
+static void
+gst_nv3dsink_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstNv3dSink *nv3dsink;
+
+  g_return_if_fail (GST_IS_NV3DSINK (object));
+
+  nv3dsink = GST_NV3DSINK (object);
+
+  switch (prop_id) {
+    case PROP_WINDOW_X:
+      nv3dsink->window_x = g_value_get_uint (value);
+      break;
+    case PROP_WINDOW_Y:
+      nv3dsink->window_y = g_value_get_uint (value);
+      break;
+    case PROP_WINDOW_WIDTH:
+      nv3dsink->window_width = g_value_get_uint (value);
+      break;
+    case PROP_WINDOW_HEIGHT:
+      nv3dsink->window_height = g_value_get_uint (value);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_nv3dsink_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstNv3dSink *nv3dsink;
+
+  g_return_if_fail (GST_IS_NV3DSINK (object));
+
+  nv3dsink = GST_NV3DSINK (object);
+
+  switch (prop_id) {
+    case PROP_WINDOW_X:
+      g_value_set_uint (value, nv3dsink->window_x);
+      break;
+    case PROP_WINDOW_Y:
+      g_value_set_uint (value, nv3dsink->window_y);
+      break;
+    case PROP_WINDOW_WIDTH:
+      g_value_set_uint (value, nv3dsink->window_width);
+      break;
+    case PROP_WINDOW_HEIGHT:
+      g_value_set_uint (value, nv3dsink->window_height);
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_nv3dsink_finalize (GObject * object)
+{
+  GstNv3dSink *nv3dsink;
+
+  g_return_if_fail (GST_IS_NV3DSINK (object));
+
+  nv3dsink = GST_NV3DSINK (object);
+
+  GST_TRACE_OBJECT (nv3dsink, "finalize");
+
+  g_mutex_clear (&nv3dsink->win_handle_lock);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_nv3dsink_start (GstBaseSink * bsink)
+{
+  GstNv3dSink *nv3dsink = GST_NV3DSINK (bsink);
+  GstNvVideoWindow *window;
+
+  GST_TRACE_OBJECT (nv3dsink, "start");
+
+  // TODO: Query display from application/upstream elements if there
+  // is such use case.
+
+  if (!nv3dsink->display) {
+    if (!gst_nv_video_display_new (&nv3dsink->display)) {
+      GST_ERROR_OBJECT (nv3dsink, "failed to create new display");
+      return FALSE;
+    }
+  } else {
+    GST_DEBUG_OBJECT (nv3dsink, "using existing display (%p)",
+        nv3dsink->display);
+  }
+
+  if (!nv3dsink->context) {
+    if (!gst_nv_video_display_create_context (nv3dsink->display,
+            &nv3dsink->context)) {
+      GST_ERROR_OBJECT (nv3dsink, "failed to create new context");
+      return FALSE;
+    }
+  } else {
+    GST_DEBUG_OBJECT (nv3dsink, "using existing context (%p)",
+        nv3dsink->context);
+  }
+
+  if (!nv3dsink->window) {
+    window = gst_nv_video_display_create_window (nv3dsink->display);
+    if (window == NULL) {
+      GST_ERROR_OBJECT (nv3dsink, "failed to create new window");
+      return FALSE;
+    }
+    nv3dsink->window = gst_object_ref (window);
+    gst_object_unref (window);
+    gst_nv_video_context_set_window (nv3dsink->context, nv3dsink->window);
+  } else {
+    GST_DEBUG_OBJECT (nv3dsink, "using existing window (%p)", nv3dsink->window);
+  }
+
+  return TRUE;
+}
+
+static gboolean
+gst_nv3dsink_stop (GstBaseSink * bsink)
+{
+  GstNv3dSink *nv3dsink = GST_NV3DSINK (bsink);
+
+  GST_TRACE_OBJECT (nv3dsink, "stop");
+
+  if (nv3dsink->configured_caps) {
+    gst_caps_unref (nv3dsink->configured_caps);
+    nv3dsink->configured_caps = NULL;
+  }
+
+  if (nv3dsink->context) {
+    gst_object_unref (nv3dsink->context);
+    nv3dsink->context = NULL;
+  }
+
+  if (nv3dsink->window) {
+    g_object_unref (nv3dsink->window);
+    nv3dsink->window = NULL;
+  }
+
+  if (nv3dsink->display) {
+    g_object_unref (nv3dsink->display);
+    nv3dsink->display = NULL;
+  }
+
+  return TRUE;
+}
+
+static GstCaps *
+gst_nv3dsink_get_caps (GstBaseSink * bsink, GstCaps * filter)
+{
+  GstNv3dSink *nv3dsink;
+  GstCaps *tmp = NULL;
+  GstCaps *result = NULL;
+  GstCaps *caps = NULL;
+
+  nv3dsink = GST_NV3DSINK (bsink);
+
+  tmp = gst_pad_get_pad_template_caps (GST_BASE_SINK_PAD (bsink));
+
+  if (filter) {
+    GST_DEBUG_OBJECT (bsink, "intersecting with filter caps %" GST_PTR_FORMAT,
+        filter);
+
+    result = gst_caps_intersect_full (filter, tmp, GST_CAPS_INTERSECT_FIRST);
+    gst_caps_unref (tmp);
+  } else {
+    result = tmp;
+  }
+
+  caps = gst_nv_video_context_get_caps (nv3dsink->context);
+  if (caps) {
+    result = gst_caps_intersect (result, caps);
+    gst_caps_unref (caps);
+  }
+
+  GST_DEBUG_OBJECT (bsink, "returning caps: %" GST_PTR_FORMAT, result);
+
+  return result;
+}
+
+static gboolean
+gst_nv3dsink_set_caps (GstBaseSink * bsink, GstCaps * caps)
+{
+  GstNv3dSink *nv3dsink;
+  GstVideoInfo info;
+  GstCapsFeatures *features;
+  gint width = 0;
+  gint height = 0;
+
+  nv3dsink = GST_NV3DSINK (bsink);
+
+  if (!nv3dsink->context || !nv3dsink->display) {
+    return FALSE;
+  }
+
+  GST_DEBUG_OBJECT (bsink, "set caps with %" GST_PTR_FORMAT, caps);
+
+  if (nv3dsink->configured_caps) {
+    if (gst_caps_can_intersect (caps, nv3dsink->configured_caps)) {
+      return TRUE;
+    }
+  }
+
+  features = gst_caps_get_features (caps, 0);
+  if (gst_caps_features_contains (features, GST_CAPS_FEATURE_MEMORY_NVMM)) {
+    nv3dsink->context->using_NVMM = 1;
+  }
+
+  if (!gst_video_info_from_caps (&info, caps)) {
+    GST_ERROR_OBJECT (nv3dsink, "Invalid caps %" GST_PTR_FORMAT, caps);
+    return FALSE;
+  }
+
+  nv3dsink->context->configured_info = info;
+
+  int is_res_changed = 0;
+
+  if ((GST_VIDEO_SINK_WIDTH (nv3dsink)!=0 && GST_VIDEO_SINK_HEIGHT (nv3dsink)!=0) && (GST_VIDEO_SINK_WIDTH (nv3dsink) != info.width || GST_VIDEO_SINK_HEIGHT (nv3dsink) != info.height)) {
+    is_res_changed = 1;
+  }
+
+  if (is_res_changed)
+  {
+    gst_nv_video_context_handle_tearing(nv3dsink->context);
+  }
+
+  GST_VIDEO_SINK_WIDTH (nv3dsink) = info.width;
+  GST_VIDEO_SINK_HEIGHT (nv3dsink) = info.height;
+
+  g_mutex_lock (&nv3dsink->win_handle_lock);
+  if (!gst_nv_video_window_get_handle (nv3dsink->window)) {
+    g_mutex_unlock (&nv3dsink->win_handle_lock);
+    gst_video_overlay_prepare_window_handle (GST_VIDEO_OVERLAY (nv3dsink));
+  } else {
+    g_mutex_unlock (&nv3dsink->win_handle_lock);
+  }
+
+  if (GST_VIDEO_SINK_WIDTH (nv3dsink) <= 0
+      || GST_VIDEO_SINK_HEIGHT (nv3dsink) <= 0) {
+    GST_ERROR_OBJECT (nv3dsink, "invalid size");
+    return FALSE;
+  }
+
+  g_mutex_lock (&nv3dsink->win_handle_lock);
+  if (!gst_nv_video_window_get_handle (nv3dsink->window)) {
+    if (nv3dsink->window_width != 0 && nv3dsink->window_height != 0) {
+      width = nv3dsink->window_width;
+      height = nv3dsink->window_height;
+    } else {
+      width = GST_VIDEO_SINK_WIDTH (nv3dsink);
+      height = GST_VIDEO_SINK_HEIGHT (nv3dsink);
+    }
+    if (!gst_nv_video_window_create_window (nv3dsink->window,
+            nv3dsink->window_x, nv3dsink->window_y, width, height)) {
+      g_mutex_unlock (&nv3dsink->win_handle_lock);
+      return FALSE;
+    }
+  }
+  g_mutex_unlock (&nv3dsink->win_handle_lock);
+
+  gst_caps_replace (&nv3dsink->configured_caps, caps);
+
+  return TRUE;
+}
+
+static gboolean
+gst_nv3dsink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
+{
+  GstNv3dSink *nv3dsink = GST_NV3DSINK (bsink);
+
+  gst_nv_video_context_handle_drc (nv3dsink->context);
+  gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, NULL);
+  gst_query_add_allocation_meta (query, GST_VIDEO_CROP_META_API_TYPE, NULL);
+
+  return TRUE;
+}
+
+static GstFlowReturn
+gst_nv3dsink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
+{
+  GstNv3dSink *nv3dsink;
+
+  nv3dsink = GST_NV3DSINK (vsink);
+
+  GST_TRACE_OBJECT (nv3dsink, "show buffer %p, window size:%ux%u", buf,
+      GST_VIDEO_SINK_WIDTH (nv3dsink), GST_VIDEO_SINK_HEIGHT (nv3dsink));
+
+  if (!gst_nv_video_context_show_frame (nv3dsink->context, buf)) {
+    return GST_FLOW_FLUSHING;
+  }
+
+  return GST_FLOW_OK;
+}
+
+static gboolean
+gst_nv3dsink_event (GstBaseSink * bsink, GstEvent * event)
+{
+  GstNv3dSink *nv3dsink = GST_NV3DSINK (bsink);
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_EOS:
+      gst_nv_video_context_handle_eos (nv3dsink->context);
+      break;
+
+    default:
+      break;
+  }
+
+  if (GST_BASE_SINK_CLASS (parent_class)->event)
+    return GST_BASE_SINK_CLASS (parent_class)->event (bsink, event);
+  else
+    gst_event_unref (event);
+
+  return TRUE;
+}
+
+/* initialize the plugin's class */
+static void
+gst_nv3dsink_class_init (GstNv3dSinkClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+  GstBaseSinkClass *gstbasesink_class;
+  GstVideoSinkClass *gstvideosink_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gstelement_class = (GstElementClass *) klass;
+  gstbasesink_class = (GstBaseSinkClass *) klass;
+  gstvideosink_class = (GstVideoSinkClass *) klass;
+
+  gobject_class->set_property = gst_nv3dsink_set_property;
+  gobject_class->get_property = gst_nv3dsink_get_property;
+
+  gst_element_class_set_static_metadata (gstelement_class, "Nvidia 3D sink",
+      "Sink/Video", "A videosink based on 3D graphics rendering API",
+      "Yogish Kulkarni <yogishk@nvidia.com>");
+
+  gobject_class->finalize = gst_nv3dsink_finalize;
+
+  gst_element_class_add_static_pad_template (gstelement_class,
+      &gst_nv3dsink_sink_template_factory);
+
+  gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_nv3dsink_start);
+  gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_nv3dsink_stop);
+  gstbasesink_class->set_caps = GST_DEBUG_FUNCPTR (gst_nv3dsink_set_caps);
+  gstbasesink_class->get_caps = GST_DEBUG_FUNCPTR (gst_nv3dsink_get_caps);
+  gstbasesink_class->propose_allocation =
+      GST_DEBUG_FUNCPTR (gst_nv3dsink_propose_allocation);
+
+  gstbasesink_class->event = gst_nv3dsink_event;
+
+  gstvideosink_class->show_frame = GST_DEBUG_FUNCPTR (gst_nv3dsink_show_frame);
+
+  g_object_class_install_property (gobject_class, PROP_WINDOW_X,
+      g_param_spec_uint ("window-x",
+          "Window x coordinate",
+          "X coordinate of window", 0, G_MAXINT, 10,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (gobject_class, PROP_WINDOW_Y,
+      g_param_spec_uint ("window-y",
+          "Window y coordinate",
+          "Y coordinate of window", 0, G_MAXINT, 10,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (gobject_class, PROP_WINDOW_WIDTH,
+      g_param_spec_uint ("window-width",
+          "Window width",
+          "Width of window", 0, G_MAXINT, 0,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+  g_object_class_install_property (gobject_class, PROP_WINDOW_HEIGHT,
+      g_param_spec_uint ("window-height",
+          "Window height",
+          "Height of window", 0, G_MAXINT, 0,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+}
+
+/* initialize the new element */
+static void
+gst_nv3dsink_init (GstNv3dSink * nv3dsink)
+{
+  GST_TRACE_OBJECT (nv3dsink, "init");
+
+  nv3dsink->display = NULL;
+  nv3dsink->context = NULL;
+  nv3dsink->window = NULL;
+  nv3dsink->window_x = 0;
+  nv3dsink->window_y = 0;
+  nv3dsink->window_width = 0;
+  nv3dsink->window_height = 0;
+
+  nv3dsink->configured_caps = NULL;
+
+  /* mutex to serialize create, set and get window handle calls */
+  g_mutex_init (&nv3dsink->win_handle_lock);
+}

gst-plugins-nv-video-sinks/nv3dsink/gstnv3dsink.h

@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2018-2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License, version 2.1, as published by the Free Software Foundation.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __GST_NV3DSINK_H__
+#define __GST_NV3DSINK_H__
+
+#include <gst/gst.h>
+#include <gst/video/gstvideosink.h>
+#include <gst/video/video.h>
+
+#include "gstnvvideofwd.h"
+
+G_BEGIN_DECLS
+
+GST_DEBUG_CATEGORY_EXTERN (gst_debug_nv3dsink);
+
+#define GST_TYPE_NV3DSINK \
+        (gst_nv3dsink_get_type())
+#define GST_NV3DSINK(obj) \
+        (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_NV3DSINK, GstNv3dSink))
+#define GST_NV3DSINK_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_NV3DSINK, GstNv3dSinkClass))
+#define GST_IS_NV3DSINK(obj) \
+        (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_NV3DSINK))
+#define GST_IS_NV3DSINK_CLASS(klass) \
+        (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_NV3DSINK))
+
+typedef struct _GstNv3dSink GstNv3dSink;
+typedef struct _GstNv3dSinkClass GstNv3dSinkClass;
+
+struct _GstNv3dSink
+{
+  GstVideoSink parent;
+
+  GstNvVideoDisplay *display;
+  GstNvVideoContext *context;
+  GstNvVideoWindow *window;
+  gint window_x;
+  gint window_y;
+  gint window_width;
+  gint window_height;
+
+  GMutex win_handle_lock;
+
+  GstCaps *configured_caps;
+};
+
+struct _GstNv3dSinkClass
+{
+  GstVideoSinkClass parent_class;
+};
+
+GType gst_nv3dsink_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_NV3DSINK_H__ */

nvbuf_utils.h

@@ -0,0 +1,897 @@
+/*
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA Corporation and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA Corporation is strictly prohibited.
+ */
+
+/**
+ * @file
+ * <b>NVIDIA Multimedia Utilities: Buffering and Transform/Composition/Blending</b>
+ *
+ */
+
+/**
+ * @defgroup ee_nvbuffering_group NvBufUtils API (Deprecated)
+ * @ingroup ds_nvbuf_api
+ * NVIDIA buffering utility library for use by applications.
+ * The utility also transforms, composits, and blends.
+ * @{
+ */
+
+#ifndef _NVBUF_UTILS_H_
+#define _NVBUF_UTILS_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <errno.h>
+#include <stdbool.h>
+
+/**
+ * Defines the maximum number of planes for a video frame.
+ */
+#define MAX_NUM_PLANES 4
+
+/**
+ * Defines the maximum number of input video frames that can be used for composition.
+ */
+#define MAX_COMPOSITE_FRAME 16
+
+/**
+ * Defines the default values for chroma subsampling.
+ * The default value matches JPEG/MPEG use cases.
+ */
+#define NVBUF_CHROMA_SUBSAMPLING_HORIZ_DEFAULT 0
+#define NVBUF_CHROMA_SUBSAMPLING_VERT_DEFAULT 1
+
+/**
+ * Defines the maximum number of sync object parameters.
+ */
+#define NVBUF_MAX_SYNCOBJ_PARAMS 5
+
+/**
+ * Use this value to represent an infinite wait interval.
+ * A value of zero should not be interpreted as infinite,
+ * it should be interpreted as "time out immediately" and
+ * simply check whether the event has already happened.
+ */
+#define NVBUFFER_SYNCPOINT_WAIT_INFINITE 0xFFFFFFFF
+
+/**
+ * Defines Payload types for NvBuffer.
+ */
+typedef enum
+{
+  /** buffer payload with hardware memory handle for set of planes. */
+  NvBufferPayload_SurfArray,
+  /** buffer payload with hardware memory handle for specific memory size. */
+  NvBufferPayload_MemHandle,
+} NvBufferPayloadType;
+
+/**
+ * Defines display scan formats for NvBuffer video planes.
+ */
+typedef enum
+{
+  /** Progessive scan formats. */
+  NvBufferDisplayScanFormat_Progressive = 0,
+  /** Interlaced scan formats. */
+  NvBufferDisplayScanFormat_Interlaced,
+} NvBufferDisplayScanFormat;
+
+/**
+ * Defines Layout formats for NvBuffer video planes.
+ */
+typedef enum
+{
+  /** Pitch Layout. */
+  NvBufferLayout_Pitch,
+  /** BlockLinear Layout. */
+  NvBufferLayout_BlockLinear,
+} NvBufferLayout;
+
+/**
+ * Defines memory access flags for NvBuffer.
+ */
+typedef enum
+{
+  /** Memory read. */
+  NvBufferMem_Read,
+  /** Memory write. */
+  NvBufferMem_Write,
+  /** Memory read & write. */
+  NvBufferMem_Read_Write,
+} NvBufferMemFlags;
+
+/**
+ * Defines tags that identify the components requesting a memory allocation.
+ * The tags can be used later to identify the total memory allocated to
+ * particular types of components.
+ */
+typedef enum
+{
+  /** tag None. */
+  NvBufferTag_NONE            = 0x0,
+  /** tag for Camera. */
+  NvBufferTag_CAMERA          = 0x200,
+  /** tag for Jpeg Encoder/Decoder. */
+  NvBufferTag_JPEG            = 0x1500,
+  /** tag for VPR Buffers. */
+  NvBufferTag_PROTECTED       = 0x1504,
+  /** tag for H264/H265 Video Encoder. */
+  NvBufferTag_VIDEO_ENC       = 0x1200,
+  /** tag for H264/H265/VP9 Video Decoder. */
+  NvBufferTag_VIDEO_DEC       = 0x1400,
+  /** tag for Video Transform/Composite. */
+  NvBufferTag_VIDEO_CONVERT   = 0xf01,
+} NvBufferTag;
+
+/**
+ * Defines color formats for NvBuffer.
+ */
+typedef enum
+{
+  /** BT.601 colorspace - YUV420 multi-planar. */
+  NvBufferColorFormat_YUV420,
+  /** BT.601 colorspace - YUV420 multi-planar. */
+  NvBufferColorFormat_YVU420,
+  /** BT.601 colorspace - YUV422 multi-planar. */
+  NvBufferColorFormat_YUV422,
+  /** BT.601 colorspace - YUV420 ER multi-planar. */
+  NvBufferColorFormat_YUV420_ER,
+  /** BT.601 colorspace - YVU420 ER multi-planar. */
+  NvBufferColorFormat_YVU420_ER,
+  /** BT.601 colorspace - Y/CbCr 4:2:0 multi-planar. */
+  NvBufferColorFormat_NV12,
+  /** BT.601 colorspace - Y/CbCr ER 4:2:0 multi-planar. */
+  NvBufferColorFormat_NV12_ER,
+  /** BT.601 colorspace - Y/CbCr 4:2:0 multi-planar. */
+  NvBufferColorFormat_NV21,
+  /** BT.601 colorspace - Y/CbCr ER 4:2:0 multi-planar. */
+  NvBufferColorFormat_NV21_ER,
+  /** BT.601 colorspace - YUV 4:2:2 planar. */
+  NvBufferColorFormat_UYVY,
+  /** BT.601 colorspace - YUV ER 4:2:2 planar. */
+  NvBufferColorFormat_UYVY_ER,
+  /** BT.601 colorspace - YUV 4:2:2 planar. */
+  NvBufferColorFormat_VYUY,
+  /** BT.601 colorspace - YUV ER 4:2:2 planar. */
+  NvBufferColorFormat_VYUY_ER,
+  /** BT.601 colorspace - YUV 4:2:2 planar. */
+  NvBufferColorFormat_YUYV,
+  /** BT.601 colorspace - YUV ER 4:2:2 planar. */
+  NvBufferColorFormat_YUYV_ER,
+  /** BT.601 colorspace - YUV 4:2:2 planar. */
+  NvBufferColorFormat_YVYU,
+  /** BT.601 colorspace - YUV ER 4:2:2 planar. */
+  NvBufferColorFormat_YVYU_ER,
+  /** LegacyRGBA colorspace - BGRA-8-8-8-8 planar. */
+  NvBufferColorFormat_ABGR32,
+  /** LegacyRGBA colorspace - XRGB-8-8-8-8 planar. */
+  NvBufferColorFormat_XRGB32,
+  /** LegacyRGBA colorspace - ARGB-8-8-8-8 planar. */
+  NvBufferColorFormat_ARGB32,
+  /** BT.601 colorspace - Y/CbCr 4:2:0 10-bit multi-planar. */
+  NvBufferColorFormat_NV12_10LE,
+  /** BT.709 colorspace - Y/CbCr 4:2:0 10-bit multi-planar. */
+  NvBufferColorFormat_NV12_10LE_709,
+  /** BT.709_ER colorspace - Y/CbCr 4:2:0 10-bit multi-planar. */
+  NvBufferColorFormat_NV12_10LE_709_ER,
+  /** BT.2020 colorspace - Y/CbCr 4:2:0 10-bit multi-planar. */
+  NvBufferColorFormat_NV12_10LE_2020,
+  /** BT.601 colorspace - Y/CrCb 4:2:0 10-bit multi-planar. */
+  NvBufferColorFormat_NV21_10LE,
+  /** BT.601 colorspace - Y/CbCr 4:2:0 12-bit multi-planar. */
+  NvBufferColorFormat_NV12_12LE,
+  /** BT.2020 colorspace - Y/CbCr 4:2:0 12-bit multi-planar. */
+  NvBufferColorFormat_NV12_12LE_2020,
+  /** BT.601 colorspace - Y/CrCb 4:2:0 12-bit multi-planar. */
+  NvBufferColorFormat_NV21_12LE,
+  /** BT.709 colorspace - YUV420 multi-planar. */
+  NvBufferColorFormat_YUV420_709,
+  /** BT.709 colorspace - YUV420 ER multi-planar. */
+  NvBufferColorFormat_YUV420_709_ER,
+  /** BT.709 colorspace - Y/CbCr 4:2:0 multi-planar. */
+  NvBufferColorFormat_NV12_709,
+  /** BT.709 colorspace - Y/CbCr ER 4:2:0 multi-planar. */
+  NvBufferColorFormat_NV12_709_ER,
+  /** BT.2020 colorspace - YUV420 multi-planar. */
+  NvBufferColorFormat_YUV420_2020,
+  /** BT.2020 colorspace - Y/CbCr 4:2:0 multi-planar. */
+  NvBufferColorFormat_NV12_2020,
+  /** BT.601 colorspace - YUV444 multi-planar. */
+  NvBufferColorFormat_YUV444,
+  /** Optical flow */
+  NvBufferColorFormat_SignedR16G16,
+  /** Optical flow SAD calculation Buffer format */
+  NvBufferColorFormat_A32,
+  /** 8-bit grayscale. */
+  NvBufferColorFormat_GRAY8,
+  /** BT.601 colorspace - Y/CbCr 4:2:2 multi-planar. */
+  NvBufferColorFormat_NV16,
+    /** BT.601 colorspace - Y/CbCr 4:2:2 10-bit semi-planar. */
+  NvBufferColorFormat_NV16_10LE,
+  /** BT.601 colorspace - Y/CbCr 4:4:4 multi-planar. */
+  NvBufferColorFormat_NV24,
+  /** BT.601 colorspace - Y/CrCb 4:4:4 10-bit multi-planar. */
+  NvBufferColorFormat_NV24_10LE,
+  /** BT.601_ER colorspace - Y/CbCr 4:2:2 multi-planar. */
+  NvBufferColorFormat_NV16_ER,
+  /** BT.601_ER colorspace - Y/CbCr 4:4:4 multi-planar. */
+  NvBufferColorFormat_NV24_ER,
+  /** BT.709 colorspace - Y/CbCr 4:2:2 multi-planar. */
+  NvBufferColorFormat_NV16_709,
+  /** BT.709 colorspace - Y/CbCr 4:4:4 multi-planar. */
+  NvBufferColorFormat_NV24_709,
+  /** BT.709_ER colorspace - Y/CbCr 4:2:2 multi-planar. */
+  NvBufferColorFormat_NV16_709_ER,
+  /** BT.709_ER colorspace - Y/CbCr 4:4:4 multi-planar. */
+  NvBufferColorFormat_NV24_709_ER,
+  /** BT.709 colorspace - Y/CbCr 10 bit 4:4:4 multi-planar. */
+  NvBufferColorFormat_NV24_10LE_709,
+  /** BT.709 ER colorspace - Y/CbCr 10 bit 4:4:4 multi-planar. */
+  NvBufferColorFormat_NV24_10LE_709_ER,
+  /** BT.2020 colorspace - Y/CbCr 10 bit 4:4:4 multi-planar. */
+  NvBufferColorFormat_NV24_10LE_2020,
+  /** BT.2020 colorspace - Y/CbCr 12 bit 4:4:4 multi-planar. */
+  NvBufferColorFormat_NV24_12LE_2020,
+  /** Non-linear RGB BT.709 colorspace - RGBA-10-10-10-2 planar. */
+  NvBufferColorFormat_RGBA_10_10_10_2_709,
+  /** Non-linear RGB BT.2020 colorspace - RGBA-10-10-10-2 planar. */
+  NvBufferColorFormat_RGBA_10_10_10_2_2020,
+  /** Non-linear RGB BT.709 colorspace - BGRA-10-10-10-2 planar. */
+  NvBufferColorFormat_BGRA_10_10_10_2_709,
+  /** Non-linear RGB BT.2020 colorspace - BGRA-10-10-10-2 planar. */
+  NvBufferColorFormat_BGRA_10_10_10_2_2020,
+  /** Invalid color format. */
+  NvBufferColorFormat_Invalid,
+} NvBufferColorFormat;
+
+/**
+ * Defines video flip methods.
+ */
+typedef enum
+{
+  /** Video flip none. */
+  NvBufferTransform_None,
+  /** Video flip rotate 90 degree counter-clockwise. */
+  NvBufferTransform_Rotate90,
+  /** Video flip rotate 180 degree. */
+  NvBufferTransform_Rotate180,
+  /** Video flip rotate 270 degree counter-clockwise. */
+  NvBufferTransform_Rotate270,
+  /** Video flip with respect to X-axis. */
+  NvBufferTransform_FlipX,
+  /** Video flip with respect to Y-axis. */
+  NvBufferTransform_FlipY,
+  /** Video flip transpose. */
+  NvBufferTransform_Transpose,
+  /** Video flip inverse transpode. */
+  NvBufferTransform_InvTranspose,
+} NvBufferTransform_Flip;
+
+/**
+ * Defines transform video filter types.
+ */
+typedef enum
+{
+  /** transform filter nearest. */
+  NvBufferTransform_Filter_Nearest,
+  /** transform filter bilinear. */
+  NvBufferTransform_Filter_Bilinear,
+  /** transform filter 5 tap. */
+  NvBufferTransform_Filter_5_Tap,
+  /** transform filter 10 tap. */
+  NvBufferTransform_Filter_10_Tap,
+  /** transform filter smart. */
+  NvBufferTransform_Filter_Smart,
+  /** transform filter nicest. */
+  NvBufferTransform_Filter_Nicest,
+} NvBufferTransform_Filter;
+
+/**
+ * Defines flags to indicate for valid transform.
+ */
+typedef enum {
+  /** transform flag to crop source rectangle. */
+  NVBUFFER_TRANSFORM_CROP_SRC   = 1,
+  /** transform flag to crop destination rectangle. */
+  NVBUFFER_TRANSFORM_CROP_DST   = 1 << 1,
+  /** transform flag to set filter type. */
+  NVBUFFER_TRANSFORM_FILTER     = 1 << 2,
+  /** transform flag to set flip method. */
+  NVBUFFER_TRANSFORM_FLIP       = 1 << 3,
+} NvBufferTransform_Flag;
+
+/**
+ * Defines flags that specify valid composition/blending operations.
+ */
+typedef enum {
+  /** flag to set for composition. */
+  NVBUFFER_COMPOSITE  = 1,
+  /** flag to set for blending. */
+  NVBUFFER_BLEND      = 1 << 1,
+  /** composition flag to set filter type. */
+  NVBUFFER_COMPOSITE_FILTER  = 1 << 2,
+} NvBufferComposite_Flag;
+
+/**
+ * Holds parameters for buffer sync point object.
+ * sync object params is simply a data structure containing [sync point ID,value] pair.
+ * This can be used by clients to describe an event that might want to wait for.
+ */
+typedef struct _NvBufferSyncObjParams
+{
+  uint32_t syncpointID;
+  uint32_t value;
+}NvBufferSyncObjParams;
+
+/**
+ * buffer sync point object.
+ */
+typedef struct _NvBufferSyncObjRec
+{
+  NvBufferSyncObjParams insyncobj[NVBUF_MAX_SYNCOBJ_PARAMS];
+  uint32_t num_insyncobj;
+  NvBufferSyncObjParams outsyncobj;
+  uint32_t use_outsyncobj;
+}NvBufferSyncObj;
+
+/**
+ * Holds composition background r,g,b colors.
+ */
+typedef struct
+{
+  /** background color value for r. */
+  float r;
+  /** background color value for g. */
+  float g;
+  /** background color value for b. */
+  float b;
+}NvBufferCompositeBackground;
+
+/**
+ * Holds coordinates for a rectangle.
+ */
+typedef struct
+{
+  /** rectangle top. */
+  uint32_t top;
+  /** rectangle left. */
+  uint32_t left;
+  /** rectangle width. */
+  uint32_t width;
+  /** rectangle height. */
+  uint32_t height;
+}NvBufferRect;
+
+/**
+ * Holds an opaque NvBuffer session type required for parallel buffer
+ * tranformations and compositions. Operations using a single session are
+ * scheduled sequentially, after the previous operation finishes. Operations for
+ * multiple sessions are scheduled in parallel.
+ */
+typedef struct _NvBufferSession * NvBufferSession;
+
+/**
+ * Holds Chroma Subsampling parameters.
+ */
+typedef struct _NvBufferChromaSubSamplingParams
+{
+  /** location settings */
+  uint8_t chromaLocHoriz;
+  uint8_t chromaLocVert;
+}NvBufferChromaSubsamplingParams;
+
+#define NVBUF_CHROMA_SUBSAMPLING_PARAMS_DEFAULT \
+  { \
+    NVBUF_CHROMA_SUBSAMPLING_HORIZ_DEFAULT, \
+    NVBUF_CHROMA_SUBSAMPLING_VERT_DEFAULT \
+  }
+
+/**
+ * Holds the input parameters for hardware buffer creation.
+ */
+typedef struct _NvBufferCreateParams
+{
+  /** width of the buffer. */
+  int32_t width;
+  /** height of the buffer. */
+  int32_t height;
+  /** payload type of the buffer. */
+  NvBufferPayloadType payloadType;
+  /** size of the memory.(Applicale for NvBufferPayload_MemHandle) */
+  int32_t memsize;
+  /** layout of the buffer. */
+  NvBufferLayout layout;
+  /** colorformat of the buffer. */
+  NvBufferColorFormat colorFormat;
+  /** tag to associate with the buffer. */
+  NvBufferTag nvbuf_tag;
+}NvBufferCreateParams;
+
+/**
+ * Holds parameters for a hardware buffer.
+ */
+typedef struct _NvBufferParams
+{
+  /** Holds the DMABUF FD of the hardware buffer. */
+  uint32_t dmabuf_fd;
+  /** pointer to hardware buffer memory. */
+  void *nv_buffer;
+  /** payload type of the buffer. */
+  NvBufferPayloadType payloadType;
+  /** size of the memory.(Applicale for NvBufferPayload_MemHandle) */
+  int32_t memsize;
+  /** size of hardware buffer. */
+  uint32_t nv_buffer_size;
+  /** video format type of hardware buffer. */
+  NvBufferColorFormat pixel_format;
+  /** number of planes of hardware buffer. */
+  uint32_t num_planes;
+  /** width of each planes of hardware buffer. */
+  uint32_t width[MAX_NUM_PLANES];
+  /** height of each planes of hardware buffer. */
+  uint32_t height[MAX_NUM_PLANES];
+  /** pitch of each planes of hardware buffer. */
+  uint32_t pitch[MAX_NUM_PLANES];
+  /** memory offset values of each video planes of hardware buffer. */
+  uint32_t offset[MAX_NUM_PLANES];
+  /** size of each vodeo planes of hardware buffer. */
+  uint32_t psize[MAX_NUM_PLANES];
+  /** layout type of each planes of hardware buffer. */
+  uint32_t layout[MAX_NUM_PLANES];
+}NvBufferParams;
+
+/**
+ * Holds extended parameters for a hardware buffer.
+ */
+typedef struct _NvBufferParamsEx
+{
+  /** nvbuffer basic parameters. */
+  NvBufferParams params;
+  /** offset in bytes from the start of the buffer to the first valid byte.
+      (Applicale for NvBufferPayload_MemHandle) */
+  int32_t startofvaliddata;
+  /** size of the valid data from the first to the last valid byte.
+      (Applicale for NvBufferPayload_MemHandle) */
+  int32_t sizeofvaliddatainbytes;
+  /** display scan format - progressive/interlaced. */
+  NvBufferDisplayScanFormat scanformat[MAX_NUM_PLANES];
+  /** offset of the second field for interlaced buffer. */
+  uint32_t secondfieldoffset[MAX_NUM_PLANES];
+  /** block height of the planes for blockLinear layout hardware buffer. */
+  uint32_t blockheightlog2[MAX_NUM_PLANES];
+  /** physical address of allocated planes. */
+  uint32_t physicaladdress[MAX_NUM_PLANES];
+  /** flags associated with planes */
+  uint64_t flags[MAX_NUM_PLANES];
+  /** metadata associated with the hardware buffer. */
+  void *payloadmetaInfo;
+  /** chroma subsampling parameters */
+  NvBufferChromaSubsamplingParams chromaSubsampling;
+  /** get buffer vpr information. */
+  bool is_protected;
+  /** buffer sync point object parameters */
+  NvBufferSyncObj syncobj;
+  /** reserved field. */
+  void *reserved;
+}NvBufferParamsEx;
+
+/**
+ * Holds parameters related to compositing/blending.
+ */
+typedef struct _NvBufferCompositeParams
+{
+  /** flag to indicate which of the composition/blending parameters are valid. */
+  uint32_t composite_flag;
+  /** number of the input buffers to be composited. */
+  uint32_t input_buf_count;
+  /** filters to use for composition. */
+  NvBufferTransform_Filter composite_filter[MAX_COMPOSITE_FRAME];
+  /** alpha values of input buffers for the blending. */
+  float dst_comp_rect_alpha[MAX_COMPOSITE_FRAME];
+  /** source rectangle coordinates of input buffers for composition. */
+  NvBufferRect src_comp_rect[MAX_COMPOSITE_FRAME];
+  /** destination rectangle coordinates of input buffers for composition. */
+  NvBufferRect dst_comp_rect[MAX_COMPOSITE_FRAME];
+  /** background color values for composition. */
+  NvBufferCompositeBackground composite_bgcolor;
+  /** NvBufferSession to be used for composition. If NULL, the default session
+   * is used. */
+  NvBufferSession session;
+}NvBufferCompositeParams;
+
+/**
+ * Holds parameters for buffer transform functions.
+ */
+typedef struct _NvBufferTransformParams
+{
+  /** flag to indicate which of the transform parameters are valid. */
+  uint32_t transform_flag;
+  /** flip method. */
+  NvBufferTransform_Flip transform_flip;
+  /** transform filter. */
+  NvBufferTransform_Filter transform_filter;
+  /** source rectangle coordinates for crop opeartion. */
+  NvBufferRect src_rect;
+  /** destination rectangle coordinates for crop opeartion. */
+  NvBufferRect dst_rect;
+  /** NvBufferSession to be used for transform. If NULL, the default session
+   * is used. */
+  NvBufferSession session;
+}NvBufferTransformParams;
+
+
+/**
+* This method can be used to wait on sync point ID.
+*
+* @param[in] syncobj_params  sync point object parameters.
+* @param[in] timeout         sync point wait timeout value.
+*
+* @returns 0 for success, -1 for failure
+*/
+int NvBufferSyncObjWait (NvBufferSyncObjParams *syncobj_params, unsigned int timeout);
+
+/**
+* This method can be used to get hardware Buffer struct size.
+*
+* @returns hardware Buffer struct size.
+*/
+int NvBufferGetSize (void);
+
+/**
+* Creates an instance of EGLImage from a DMABUF FD.
+*
+* @param[in] display    An EGLDisplay object used during the creation
+*                       of the EGLImage. If NULL, nvbuf_utils() uses
+*                       its own instance of EGLDisplay.
+* @param[in] dmabuf_fd  DMABUF FD of the buffer from which the EGLImage
+*                       is to be created.
+*
+* @returns `EGLImageKHR` for success, `NULL` for failure
+*/
+EGLImageKHR NvEGLImageFromFd (EGLDisplay display, int dmabuf_fd);
+
+/**
+* Destroys an EGLImage object.
+*
+* @param[in] display    An EGLDisplay object used to destroy the EGLImage.
+*                       If NULL, nvbuf_utils() uses its own instance of
+*                       EGLDisplay.
+* @param[in] eglImage   The EGLImageKHR object to be destroyed.
+*
+* @returns 0 for success, -1 for failure
+*/
+int NvDestroyEGLImage (EGLDisplay display, EGLImageKHR eglImage);
+
+/**
+ * Allocates a hardware buffer (deprecated).
+ *
+ * @deprecated Use NvBufferCreateEx() instead.
+ * @param[out] dmabuf_fd    Returns the DMABUF FD of the hardware buffer.
+ * @param[in]  width        Buffer width, in bytes.
+ * @param[in]  height       Buffer height, in bytes.
+ * @param[in]  layout       Layout of the buffer.
+ * @param[in]  colorFormat  Color format of the buffer.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufferCreate (int *dmabuf_fd, int width, int height,
+    NvBufferLayout layout, NvBufferColorFormat colorFormat);
+
+/**
+ * Allocates a hardware buffer.
+ *
+ * @param[out] dmabuf_fd    Returns the DMABUF FD of the hardware buffer.
+ * @param[in]  input_params Input parameters for hardware buffer creation.
+ *
+ * @returns 0 for success, -1 for failure
+ */
+int NvBufferCreateEx (int *dmabuf_fd, NvBufferCreateParams *input_params);
+
+/**
+ * Allocates a hardware buffer for interlace scan format.
+ *
+ * @param[out] dmabuf_fd    Returns the DMABUF FD of the hardware buffer.
+ * @param[in]  input_params Input parameters for hardware buffer creation.
+ *
+ * @returns 0 for success, -1 for failure
+ */
+int NvBufferCreateInterlace (int *dmabuf_fd, NvBufferCreateParams *input_params);
+
+/**
+ * Allocates a hardware buffer with a given chroma subsampling location.
+ *
+ * @param[in] dmabuf_fd         DMABUF FD of the buffer.
+ * @param[in] input_params      Input parameters for hardware buffer creation.
+ * @param[in] chromaSubsampling Chroma location parameters.
+ *
+ * @returns 0 for success, -1 for failure
+ */
+int NvBufferCreateWithChromaLoc (int *dmabuf_fd, NvBufferCreateParams *input_params, NvBufferChromaSubsamplingParams *chromaSubsampling);
+
+/**
+ * Gets buffer parameters.
+ * @param[in] dmabuf_fd `DMABUF FD` of buffer.
+ * @param[out] params A pointer to the structure to fill with parameters.
+ *
+ * @returns 0 for success, -1 for failure.
+ */
+int NvBufferGetParams (int dmabuf_fd, NvBufferParams *params);
+
+/**
+ * Gets buffer extended parameters.
+ * @param[in] dmabuf_fd `DMABUF FD` of buffer.
+ * @param[out] exparams A pointer to the structure to fill with extended parameters.
+ *
+ * @returns 0 for success, -1 for failure.
+ */
+int NvBufferGetParamsEx (int dmabuf_fd, NvBufferParamsEx *exparams);
+
+/**
+* Destroys a hardware buffer.
+* @param[in] dmabuf_fd Specifies the `dmabuf_fd` `hw_buffer` to destroy.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferDestroy (int dmabuf_fd);
+
+/**
+* Extracts the `dmabuf_fd` from the hardware buffer.
+* @param[in] nvbuf Specifies the `hw_buffer`.
+* @param[out] dmabuf_fd Returns DMABUF FD of `hw_buffer`.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int ExtractFdFromNvBuffer (void *nvbuf, int *dmabuf_fd);
+
+/**
+* Releases the `dmabuf_fd` buffer.
+* @see ExtractfdFromNvBuffer()
+* @param[in] dmabuf_fd Specifies the `dmabuf_fd` to release.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvReleaseFd (int dmabuf_fd);
+
+/**
+* Syncs the hardware memory cache for the CPU.
+*
+* \sa NvBufferMemMap for the purpose of the function
+*
+* @param[in] dmabuf_fd DMABUF FD of buffer.
+* @param[in] plane video frame plane.
+* @param[in] pVirtAddr Virtual Address pointer of the memory-mapped plane.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferMemSyncForCpu (int dmabuf_fd, unsigned int plane, void **pVirtAddr);
+
+/**
+* Syncs the hardware memory cache for the CPU, API to be used for another process.
+*
+* \sa NvBufferMemMapEx for the purpose of the function
+*
+* @param[in] dmabuf_fd DMABUF FD of buffer.
+* @param[in] exparams extended parameters for a hardware buffer.
+* @param[in] plane video frame plane.
+* @param[in] pVirtAddr Virtual Address pointer of the memory-mapped plane.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferMemSyncForCpuEx (int dmabuf_fd, NvBufferParamsEx *exparams, unsigned int plane, void **pVirtAddr);
+
+/**
+* Syncs the hardware memory cache for the device.
+*
+* \sa NvBufferMemMap for the purpose of the function
+*
+* @param[in] dmabuf_fd DMABUF FD of buffer.
+* @param[in] plane video frame plane.
+* @param[in] pVirtAddr Virtual Address pointer of the memory-mapped plane.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferMemSyncForDevice (int dmabuf_fd, unsigned int plane, void **pVirtAddr);
+
+/**
+* Syncs the hardware memory cache for the device, API to be used for another process.
+*
+* \sa NvBufferMemMapEx for the purpose of the function
+*
+* @param[in] dmabuf_fd DMABUF FD of buffer.
+* @param[in] exparams extended parameters for a hardware buffer.
+* @param[in] plane video frame plane.
+* @param[in] pVirtAddr Virtual Address pointer of the memory-mapped plane.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferMemSyncForDeviceEx (int dmabuf_fd, NvBufferParamsEx *exparams, unsigned int plane, void **pVirtAddr);
+
+/**
+* Gets the memory-mapped virtual address of the plane.
+*
+* The client must call NvBufferMemSyncForCpu() with the virtual address returned
+* by this function before accessing the mapped memory in CPU.
+*
+* After memory mapping is complete, mapped memory modification
+* must be coordinated between the CPU and hardware device as
+* follows:
+* - CPU: If the CPU modifies any mapped memory, the client must call
+*   NvBufferMemSyncForDevice() before any hardware device accesses the memory.
+* - Hardware device: If the mapped memory is modified by any hardware device,
+*   the client must call NvBufferMemSyncForCpu() before CPU accesses the memory.
+*
+* @param[in] dmabuf_fd DMABUF FD of buffer.
+* @param[in] plane video frame plane.(Applies to @ref NvBufferPayload_SurfArray.)
+* @param[in] memflag NvBuffer memory flag.
+* @param[out] pVirtAddr Virtual Address pointer of the memory-mapped plane.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferMemMap (int dmabuf_fd, unsigned int plane, NvBufferMemFlags memflag, void **pVirtAddr);
+
+/**
+* Gets the memory-mapped virtual address of the plane, API to be used for another process.
+*
+* The client must call NvBufferMemSyncForCpuEx() with the virtual address returned
+* by this function before accessing the mapped memory in CPU in another process.
+*
+* After memory mapping is complete, mapped memory modification
+* must be coordinated between the CPU and hardware device as
+* follows:
+* - CPU: If the CPU modifies any mapped memory, the client must call
+*   NvBufferMemSyncForDeviceEx() before any hardware device accesses the memory.
+* - Hardware device: If the mapped memory is modified by any hardware device,
+*   the client must call NvBufferMemSyncForCpuEx() before CPU accesses the memory.
+*
+* @param[in] dmabuf_fd DMABUF FD of buffer.
+* @param[in] exparams extended parameters for a hardware buffer.
+* @param[in] plane video frame plane.(Applies to @ref NvBufferPayload_SurfArray.)
+* @param[in] memflag NvBuffer memory flag.
+* @param[out] pVirtAddr Virtual Address pointer of the memory-mapped plane.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferMemMapEx (int dmabuf_fd, NvBufferParamsEx *exparams, unsigned int plane, NvBufferMemFlags memflag, void **pVirtAddr);
+
+/**
+* Unmaps the mapped virtual address of the plane.
+*
+* If the following conditions are both true, the client must call
+* NvBufferMemSyncForDevice() before unmapping the memory:
+* - Mapped memory was modified by the CPU.
+* - Mapped memory will be accessed by a hardware device.
+*
+* @param[in] dmabuf_fd  DMABUF FD of the buffer.
+* @param[in] plane      Video frame plane. Applies to
+*                       @ref NvBufferPayload_SurfArray.
+* @param[in] pVirtAddr  Virtual address pointer to the memory-mapped plane.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferMemUnMap (int dmabuf_fd, unsigned int plane, void **pVirtAddr);
+
+/**
+* Unmaps the mapped virtual address of the plane, API to be used for another process.
+*
+* If the following conditions are both true, the client must call
+* NvBufferMemSyncForDeviceEx() before unmapping the memory in another process:
+* - Mapped memory was modified by the CPU.
+* - Mapped memory will be accessed by a hardware device.
+*
+* @param[in] dmabuf_fd  DMABUF FD of the buffer.
+* @param[in] exparams extended parameters for a hardware buffer.
+* @param[in] plane      Video frame plane. Applies to
+*                       @ref NvBufferPayload_SurfArray.
+* @param[in] pVirtAddr  Virtual address pointer to the memory-mapped plane.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBufferMemUnMapEx (int dmabuf_fd, NvBufferParamsEx *exparams, unsigned int plane, void **pVirtAddr);
+
+/**
+* Copies the NvBuffer plane contents to a raw buffer plane.
+* @param[in] dmabuf_fd DMABUF FD of NvBuffer.
+* @param[in] plane video frame plane.
+* @param[in] out_width aligned width of the raw data plane.
+* @param[in] out_height aligned height of the raw data plane.
+* @param[in] ptr pointer to the output raw plane data.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int NvBuffer2Raw (int dmabuf_fd, unsigned int plane, unsigned int out_width, unsigned int out_height, unsigned char *ptr);
+
+/**
+* Copies raw buffer plane contents to an NvBuffer plane.
+* @param[in] ptr pointer to the input raw plane data.
+* @param[in] plane video frame plane.
+* @param[in] in_width aligned width of the raw data plane.
+* @param[in] in_height aligned height of the raw data plane.
+* @param[in] dmabuf_fd DMABUF FD of NvBuffer.
+*
+* @returns 0 for success, -1 for failure.
+*/
+int Raw2NvBuffer (unsigned char *ptr, unsigned int plane, unsigned int in_width, unsigned int in_height, int dmabuf_fd);
+
+/**
+* Creates a new NvBufferSession for parallel scheduling of
+* buffer transformations and compositions.
+*
+* @returns A session pointer, NULL for failure.
+*/
+NvBufferSession NvBufferSessionCreate(void);
+
+/**
+* Destroys an existing \ref NvBufferSession.
+* @param[in] session    An existing NvBufferSession.
+*/
+void NvBufferSessionDestroy(NvBufferSession session);
+
+/**
+ * Transforms one DMA buffer to another DMA buffer.
+ * This function can support transforms for copying, scaling, fliping, rotating, and cropping.
+ * @param[in] src_dmabuf_fd DMABUF FD of source buffer
+ * @param[in] dst_dmabuf_fd DMABUF FD of destination buffer
+ * @param[in] transform_params transform parameters
+ *
+ * @return 0 for sucess, -1 for failure.
+ */
+int NvBufferTransform (int src_dmabuf_fd, int dst_dmabuf_fd, NvBufferTransformParams *transform_params);
+
+/**
+ * Transforms one DMA buffer to another DMA buffer, API to be used for another process.
+ * This function can support transforms for copying, scaling, fliping, rotating, and cropping.
+ * @param[in] src_dmabuf_fd DMABUF FD of source buffer
+ * @param[in] input_params extended input parameters for a hardware buffer.
+ * @param[in] dst_dmabuf_fd DMABUF FD of destination buffer
+ * @param[in] output_params extended output parameters for a hardware buffer.
+ * @param[in] transform_params transform parameters
+ *
+ * @return 0 for sucess, -1 for failure.
+ */
+int NvBufferTransformEx (int src_dmabuf_fd, NvBufferParamsEx *input_params, int dst_dmabuf_fd, NvBufferParamsEx *output_params, NvBufferTransformParams *transform_params);
+
+/**
+ * Transforms one DMA buffer to another DMA buffer asyncroniously (non-blocking).
+ * This function can support transforms for copying, scaling, fliping, rotating, and cropping.
+ * @param[in] src_dmabuf_fd DMABUF FD of source buffer
+ * @param[in] dst_dmabuf_fd DMABUF FD of destination buffer
+ * @param[in] transform_params transform parameters
+ * @param[in] syncobj nvbuffer sync point object
+ *
+ * @return 0 for sucess, -1 for failure.
+ */
+int NvBufferTransformAsync (int src_dmabuf_fd, int dst_dmabuf_fd, NvBufferTransformParams *transform_params, NvBufferSyncObj *syncobj);
+
+
+/**
+ * \brief Composites multiple input DMA buffers to one output DMA buffer.
+ *
+ * This function can composite multiple input frames to one output.
+ *
+ * @param[in] src_dmabuf_fds    An array of DMABUF FDs of source buffers.
+ *                              These buffers are composited together. Output
+ *                              is copied to the output buffer referenced by
+ *                              @a dst_dmabuf_fd.
+ * @param[in] dst_dmabuf_fd     DMABUF FD of the compositing destination buffer.
+ * @param[in] composite_params  Compositing parameters.
+ */
+int NvBufferComposite (int *src_dmabuf_fds, int dst_dmabuf_fd, NvBufferCompositeParams *composite_params);
+
+#ifdef __cplusplus
+}
+#endif
+
+/** @} */
+
+#endif

nvbufsurface.h

@@ -0,0 +1,740 @@
+/*
+ * Copyright (c) 2019-2022, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * NVIDIA Corporation and its licensors retain all intellectual property
+ * and proprietary rights in and to this software, related documentation
+ * and any modifications thereto.  Any use, reproduction, disclosure or
+ * distribution of this software and related documentation without an express
+ * license agreement from NVIDIA Corporation is strictly prohibited.
+ */
+
+/**
+ * @file nvbufsurface.h
+ * <b>NvBufSurface Interface </b>
+ *
+ * This file specifies the NvBufSurface management API.
+ *
+ * The NvBufSurface API provides methods to allocate / deallocate, map / unmap
+ * and copy batched buffers.
+ */
+ /**
+ * @defgroup  ds_nvbuf_api Buffer Management API module
+ *
+ * This section describes types and functions of NvBufSurface application
+ * programming interface.
+ *
+ */
+
+#ifndef NVBUFSURFACE_H_
+#define NVBUFSURFACE_H_
+
+#include <stdint.h>
+#include <stdbool.h>
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/** @defgroup ds_aaa NvBufSurface Types and Functions
+ * Defines types and functions of \ref NvBufSurface application
+ * programming interface.
+ * @ingroup ds_nvbuf_api
+ * @{ */
+
+/** Defines the default padding length for reserved fields of structures. */
+#define STRUCTURE_PADDING  4
+
+/** Defines the maximum number of planes. */
+#define NVBUF_MAX_PLANES   4
+
+/**
+  * Defines the default values for chroma subsampling.
+  * The default value matches JPEG/MPEG use cases.
+  */
+#define NVBUFSURFACE_CHROMA_SUBSAMPLING_HORIZ_DEFAULT 0
+#define NVBUFSURFACE_CHROMA_SUBSAMPLING_VERT_DEFAULT 1
+
+#define NVBUFSURFACE_CHROMA_SUBSAMPLING_PARAMS_DEFAULT \
+  { \
+    NVBUFSURFACE_CHROMA_SUBSAMPLING_HORIZ_DEFAULT, \
+    NVBUFSURFACE_CHROMA_SUBSAMPLING_VERT_DEFAULT \
+  }
+
+/**
+ *  Defines mapping types of NvBufSurface.
+ */
+typedef enum
+{
+  NVBUF_MAP_READ,       /**< Specifies \ref NvBufSurface mapping type "read." */
+  NVBUF_MAP_WRITE,      /**< Specifies \ref NvBufSurface mapping type
+                            "write." */
+  NVBUF_MAP_READ_WRITE, /**< Specifies \ref NvBufSurface mapping type
+                            "read/write." */
+} NvBufSurfaceMemMapFlags;
+
+/**
+  * Defines tags that identify the components requesting a memory allocation.
+  * The tags can be used later to identify the total memory allocated to
+  * particular types of components.
+  * TODO: Check if DeepStream require more tags to be defined.
+  */
+typedef enum
+{
+  /** tag None. */
+  NvBufSurfaceTag_NONE            = 0x0,
+  /** tag for Camera. */
+  NvBufSurfaceTag_CAMERA          = 0x200,
+  /** tag for Jpeg Encoder/Decoder. */
+  NvBufSurfaceTag_JPEG            = 0x1500,
+  /** tag for VPR Buffers. */
+  NvBufSurfaceTag_PROTECTED       = 0x1504,
+  /** tag for H264/H265 Video Encoder. */
+  NvBufSurfaceTag_VIDEO_ENC       = 0x1200,
+  /** tag for H264/H265/VP9 Video Decoder. */
+  NvBufSurfaceTag_VIDEO_DEC       = 0x1400,
+  /** tag for Video Transform/Composite/Blend. */
+  NvBufSurfaceTag_VIDEO_CONVERT   = 0xf01,
+} NvBufSurfaceTag;
+
+/**
+ * Defines color formats for NvBufSurface.
+ */
+typedef enum
+{
+  /** Specifies an invalid color format. */
+  NVBUF_COLOR_FORMAT_INVALID,
+  /** Specifies 8 bit GRAY scale - single plane */
+  NVBUF_COLOR_FORMAT_GRAY8,
+  /** Specifies BT.601 colorspace - YUV420 multi-planar. */
+  NVBUF_COLOR_FORMAT_YUV420,
+  /** Specifies BT.601 colorspace - YUV420 multi-planar. */
+  NVBUF_COLOR_FORMAT_YVU420,
+  /** Specifies BT.601 colorspace - YUV420 ER multi-planar. */
+  NVBUF_COLOR_FORMAT_YUV420_ER,
+  /** Specifies BT.601 colorspace - YVU420 ER multi-planar. */
+  NVBUF_COLOR_FORMAT_YVU420_ER,
+  /** Specifies BT.601 colorspace - Y/CbCr 4:2:0 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12,
+  /** Specifies BT.601 colorspace - Y/CbCr ER 4:2:0 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_ER,
+  /** Specifies BT.601 colorspace - Y/CbCr 4:2:0 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV21,
+  /** Specifies BT.601 colorspace - Y/CbCr ER 4:2:0 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV21_ER,
+  /** Specifies BT.601 colorspace - YUV 4:2:2 planar. */
+  NVBUF_COLOR_FORMAT_UYVY,
+  /** Specifies BT.601 colorspace - YUV ER 4:2:2 planar. */
+  NVBUF_COLOR_FORMAT_UYVY_ER,
+  /** Specifies BT.601 colorspace - YUV 4:2:2 planar. */
+  NVBUF_COLOR_FORMAT_VYUY,
+  /** Specifies BT.601 colorspace - YUV ER 4:2:2 planar. */
+  NVBUF_COLOR_FORMAT_VYUY_ER,
+  /** Specifies BT.601 colorspace - YUV 4:2:2 planar. */
+  NVBUF_COLOR_FORMAT_YUYV,
+  /** Specifies BT.601 colorspace - YUV ER 4:2:2 planar. */
+  NVBUF_COLOR_FORMAT_YUYV_ER,
+  /** Specifies BT.601 colorspace - YUV 4:2:2 planar. */
+  NVBUF_COLOR_FORMAT_YVYU,
+  /** Specifies BT.601 colorspace - YUV ER 4:2:2 planar. */
+  NVBUF_COLOR_FORMAT_YVYU_ER,
+  /** Specifies BT.601 colorspace - YUV444 multi-planar. */
+  NVBUF_COLOR_FORMAT_YUV444,
+  /** Specifies RGBA-8-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_RGBA,
+  /** Specifies BGRA-8-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_BGRA,
+  /** Specifies ARGB-8-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_ARGB,
+  /** Specifies ABGR-8-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_ABGR,
+  /** Specifies RGBx-8-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_RGBx,
+  /** Specifies BGRx-8-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_BGRx,
+  /** Specifies xRGB-8-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_xRGB,
+  /** Specifies xBGR-8-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_xBGR,
+  /** Specifies RGB-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_RGB,
+  /** Specifies BGR-8-8-8 single plane. */
+  NVBUF_COLOR_FORMAT_BGR,
+  /** Specifies BT.601 colorspace - Y/CbCr 4:2:0 10-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_10LE,
+  /** Specifies BT.601 colorspace - Y/CbCr 4:2:0 12-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_12LE,
+  /** Specifies BT.709 colorspace - YUV420 multi-planar. */
+  NVBUF_COLOR_FORMAT_YUV420_709,
+  /** Specifies BT.709 colorspace - YUV420 ER multi-planar. */
+  NVBUF_COLOR_FORMAT_YUV420_709_ER,
+  /** Specifies BT.709 colorspace - Y/CbCr 4:2:0 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_709,
+  /** Specifies BT.709 colorspace - Y/CbCr ER 4:2:0 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_709_ER,
+  /** Specifies BT.2020 colorspace - YUV420 multi-planar. */
+  NVBUF_COLOR_FORMAT_YUV420_2020,
+  /** Specifies BT.2020 colorspace - Y/CbCr 4:2:0 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_2020,
+  /** Specifies BT.601 colorspace - Y/CbCr ER 4:2:0 10-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_10LE_ER,
+  /** Specifies BT.709 colorspace - Y/CbCr 4:2:0 10-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_10LE_709,
+  /** Specifies BT.709 colorspace - Y/CbCr ER 4:2:0 10-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_10LE_709_ER,
+  /** Specifies BT.2020 colorspace - Y/CbCr 4:2:0 10-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_10LE_2020,
+  /** Specifies color format for packed 2 signed shorts  */
+  NVBUF_COLOR_FORMAT_SIGNED_R16G16,
+  /** Specifies RGB- unsigned 8 bit multiplanar plane. */
+  NVBUF_COLOR_FORMAT_R8_G8_B8,
+  /** Specifies BGR- unsigned 8 bit multiplanar plane. */
+  NVBUF_COLOR_FORMAT_B8_G8_R8,
+  /** Specifies RGB-32bit Floating point multiplanar plane. */
+  NVBUF_COLOR_FORMAT_R32F_G32F_B32F,
+  /** Specifies BGR-32bit Floating point multiplanar plane. */
+  NVBUF_COLOR_FORMAT_B32F_G32F_R32F,
+  /** Specifies BT.601 colorspace - YUV422 multi-planar. */
+  NVBUF_COLOR_FORMAT_YUV422,
+  /** Specifies BT.601 colorspace - Y/CrCb 4:2:0 10-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV21_10LE,
+  /** Specifies BT.601 colorspace - Y/CrCb 4:2:0 12-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV21_12LE,
+  /** Specifies BT.2020 colorspace - Y/CbCr 4:2:0 12-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV12_12LE_2020,
+  /** Specifies BT.601 colorspace - Y/CbCr 4:2:2 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV16,
+  /** Specifies BT.601 colorspace - Y/CbCr 4:2:2 10-bit semi-planar. */
+  NVBUF_COLOR_FORMAT_NV16_10LE,
+  /** Specifies BT.601 colorspace - Y/CbCr 4:4:4 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24,
+  /** Specifies BT.601 colorspace - Y/CrCb 4:4:4 10-bit multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24_10LE,
+  /** Specifies BT.601_ER colorspace - Y/CbCr 4:2:2 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV16_ER,
+  /** Specifies BT.601_ER colorspace - Y/CbCr 4:4:4 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24_ER,
+  /** Specifies BT.709 colorspace - Y/CbCr 4:2:2 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV16_709,
+  /** Specifies BT.709 colorspace - Y/CbCr 4:4:4 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24_709,
+  /** Specifies BT.709_ER colorspace - Y/CbCr 4:2:2 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV16_709_ER,
+  /** Specifies BT.709_ER colorspace - Y/CbCr 4:4:4 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24_709_ER,
+  /** Specifies BT.709 colorspace - Y/CbCr 10 bit 4:4:4 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24_10LE_709,
+  /** Specifies BT.709 ER colorspace - Y/CbCr 10 bit 4:4:4 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24_10LE_709_ER,
+  /** Specifies BT.2020 colorspace - Y/CbCr 10 bit 4:4:4 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24_10LE_2020,
+  /** Specifies BT.2020 colorspace - Y/CbCr 12 bit 4:4:4 multi-planar. */
+  NVBUF_COLOR_FORMAT_NV24_12LE_2020,
+  /** Specifies Non-linear RGB BT.709 colorspace - RGBA-10-10-10-2 planar. */
+  NVBUF_COLOR_FORMAT_RGBA_10_10_10_2_709,
+  /** Specifies Non-linear RGB BT.2020 colorspace - RGBA-10-10-10-2 planar. */
+  NVBUF_COLOR_FORMAT_RGBA_10_10_10_2_2020,
+  /** Specifies Non-linear RGB BT.709 colorspace - BGRA-10-10-10-2 planar. */
+  NVBUF_COLOR_FORMAT_BGRA_10_10_10_2_709,
+  /** Specifies Non-linear RGB BT.2020 colorspace - BGRA-10-10-10-2 planar. */
+  NVBUF_COLOR_FORMAT_BGRA_10_10_10_2_2020,
+  /** Specifies Optical flow SAD calculation Buffer format */
+  NVBUF_COLOR_FORMAT_A32,
+  /** Specifies BT.601 colorspace - 10 bit YUV 4:2:2 interleaved. */
+  NVBUF_COLOR_FORMAT_UYVP,
+  /** Specifies BT.601 colorspace - 10 bit YUV ER 4:2:2 interleaved. */
+  NVBUF_COLOR_FORMAT_UYVP_ER,
+
+  NVBUF_COLOR_FORMAT_LAST
+} NvBufSurfaceColorFormat;
+
+/**
+ * Specifies layout formats for \ref NvBufSurface video planes.
+ */
+typedef enum
+{
+  /** Specifies pitch layout. */
+  NVBUF_LAYOUT_PITCH,
+  /** Specifies block linear layout. */
+  NVBUF_LAYOUT_BLOCK_LINEAR,
+} NvBufSurfaceLayout;
+
+/**
+ * Specifies memory types for \ref NvBufSurface.
+ */
+typedef enum
+{
+  /** Specifies the default memory type, i.e. \ref NVBUF_MEM_CUDA_DEVICE
+   for dGPU, \ref NVBUF_MEM_SURFACE_ARRAY for Jetson. Use \ref NVBUF_MEM_DEFAULT
+   to allocate whichever type of memory is appropriate for the platform. */
+  NVBUF_MEM_DEFAULT,
+  /** Specifies CUDA Host memory type. */
+  NVBUF_MEM_CUDA_PINNED,
+  /** Specifies CUDA Device memory type. */
+  NVBUF_MEM_CUDA_DEVICE,
+  /** Specifies CUDA Unified memory type. */
+  NVBUF_MEM_CUDA_UNIFIED,
+  /** Specifies NVRM Surface Array type. Valid only for Jetson. */
+  NVBUF_MEM_SURFACE_ARRAY,
+  /** Specifies NVRM Handle type. Valid only for Jetson. */
+  NVBUF_MEM_HANDLE,
+  /** Specifies memory allocated by malloc(). */
+  NVBUF_MEM_SYSTEM,
+} NvBufSurfaceMemType;
+
+/**
+  * Defines display scan formats for NvBufSurface video planes.
+  */
+typedef enum
+{
+  /** Progessive scan formats. */
+  NVBUF_DISPLAYSCANFORMAT_PROGRESSIVE,
+  /** Interlaced scan formats. */
+  NVBUF_DISPLAYSCANFORMAT_INTERLACED,
+} NvBufSurfaceDisplayScanFormat;
+
+/**
+ * Holds plane wise parameters(extended) of a buffer.
+ */
+typedef struct NvBufSurfacePlaneParamsEx
+{
+  /** display scan format - progressive/interlaced. */
+  NvBufSurfaceDisplayScanFormat scanformat[NVBUF_MAX_PLANES];
+  /** offset of the second field for interlaced buffer. */
+  uint32_t secondfieldoffset[NVBUF_MAX_PLANES];
+  /** block height of the planes for blockLinear layout buffer. */
+  uint32_t blockheightlog2[NVBUF_MAX_PLANES];
+  /** physical address of allocated planes. */
+  uint32_t physicaladdress[NVBUF_MAX_PLANES];
+  /** flags associated with planes */
+  uint64_t flags[NVBUF_MAX_PLANES];
+
+  void * _reserved[STRUCTURE_PADDING * NVBUF_MAX_PLANES];
+} NvBufSurfacePlaneParamsEx;
+
+/**
+ * Holds plane wise parameters of a buffer.
+ */
+typedef struct NvBufSurfacePlaneParams
+{
+  /** Holds the number of planes. */
+  uint32_t num_planes;
+  /** Holds the widths of planes. */
+  uint32_t width[NVBUF_MAX_PLANES];
+  /** Holds the heights of planes. */
+  uint32_t height[NVBUF_MAX_PLANES];
+  /** Holds the pitches of planes in bytes. */
+  uint32_t pitch[NVBUF_MAX_PLANES];
+  /** Holds the offsets of planes in bytes. */
+  uint32_t offset[NVBUF_MAX_PLANES];
+  /** Holds the sizes of planes in bytes. */
+  uint32_t psize[NVBUF_MAX_PLANES];
+  /** Holds the number of bytes occupied by a pixel in each plane. */
+  uint32_t bytesPerPix[NVBUF_MAX_PLANES];
+
+  void * _reserved[STRUCTURE_PADDING * NVBUF_MAX_PLANES];
+} NvBufSurfacePlaneParams;
+
+
+/**
+  * Holds Chroma Subsampling parameters for NvBufSurface allocation.
+  */
+typedef struct NvBufSurfaceChromaSubsamplingParams
+{
+  /** location settings */
+  uint8_t chromaLocHoriz;
+  uint8_t chromaLocVert;
+} NvBufSurfaceChromaSubsamplingParams;
+
+/**
+ * Holds parameters required to allocate an \ref NvBufSurface.
+ */
+typedef struct NvBufSurfaceCreateParams {
+  /** Holds the GPU ID. Valid only for a multi-GPU system. */
+  uint32_t gpuId;
+  /** Holds the width of the buffer. */
+  uint32_t width;
+  /** Holds the height of the buffer. */
+  uint32_t height;
+  /** Holds the amount of memory to be allocated. Optional; if set, all other
+   parameters (width, height, etc.) are ignored. */
+  uint32_t size;
+  /** Holds a "contiguous memory" flag. If set, contiguous memory is allocated
+   for the batch. Valid only for CUDA memory types. */
+  bool isContiguous;
+  /** Holds the color format of the buffer. */
+  NvBufSurfaceColorFormat colorFormat;
+  /** Holds the surface layout. May be Block Linear (BL) or Pitch Linear (PL).
+   For a dGPU, only PL is valid. */
+  NvBufSurfaceLayout layout;
+  /** Holds the type of memory to be allocated. */
+  NvBufSurfaceMemType memType;
+} NvBufSurfaceCreateParams;
+
+/**
+ * Hold extended parameters required to allocate NvBufSurface.
+ * (Applicable for NvBufSurfaceAllocate API)
+ */
+typedef struct NvBufSurfaceAllocateParams {
+ /** Hold legacy NvBufSurface creation parameters */
+  NvBufSurfaceCreateParams params;
+ /** Display scan format */
+  NvBufSurfaceDisplayScanFormat displayscanformat;
+ /** Chroma Subsampling parameters */
+  NvBufSurfaceChromaSubsamplingParams chromaSubsampling;
+ /** components tag to be used for memory allocation */
+  NvBufSurfaceTag memtag;
+
+  void * _reserved[STRUCTURE_PADDING];
+} NvBufSurfaceAllocateParams;
+
+/**
+ * Hold the pointers of mapped buffer.
+ */
+typedef struct NvBufSurfaceMappedAddr {
+  /** Holds planewise pointers to a CPU mapped buffer. */
+  void * addr[NVBUF_MAX_PLANES];
+  /** Holds a pointer to a mapped EGLImage. */
+  void *eglImage;
+
+  void * _reserved[STRUCTURE_PADDING];
+} NvBufSurfaceMappedAddr;
+
+/**
+ * Hold the information(extended) of single buffer in the batch.
+ */
+typedef struct NvBufSurfaceParamsEx {
+  /** offset in bytes from the start of the buffer to the first valid byte.
+      (Applicable for NVBUF_MEM_HANDLE) */
+  int32_t startofvaliddata;
+  /** size of the valid data from the first to the last valid byte.
+      (Applicable for NVBUF_MEM_HANDLE) */
+  int32_t sizeofvaliddatainbytes;
+  /** chroma subsampling parameters.
+      (Applicable for NVBUF_MEM_SURFACE_ARRAY) */
+  NvBufSurfaceChromaSubsamplingParams chromaSubsampling;
+  /** get buffer vpr information. */
+  bool is_protected;
+  /** plane wise extended info */
+  NvBufSurfacePlaneParamsEx planeParamsex;
+
+  void * _reserved[STRUCTURE_PADDING];
+} NvBufSurfaceParamsEx;
+
+/**
+ * Hold the information of single buffer in the batch.
+ */
+typedef struct NvBufSurfaceParams {
+  /** Holds the width of the buffer. */
+  uint32_t width;
+  /** Holds the height of the buffer. */
+  uint32_t height;
+  /** Holds the pitch of the buffer. */
+  uint32_t pitch;
+  /** Holds the color format of the buffer. */
+  NvBufSurfaceColorFormat colorFormat;
+  /** Holds BL or PL. For dGPU, only PL is valid. */
+  NvBufSurfaceLayout layout;
+  /** Holds a DMABUF FD. Valid only for \ref NVBUF_MEM_SURFACE_ARRAY and
+   \ref NVBUF_MEM_HANDLE type memory. */
+  uint64_t bufferDesc;
+  /** Holds the amount of allocated memory. */
+  uint32_t dataSize;
+  /** Holds a pointer to allocated memory. Not valid for
+   \ref NVBUF_MEM_SURFACE_ARRAY or \ref NVBUF_MEM_HANDLE. */
+  void * dataPtr;
+  /** Holds planewise information (width, height, pitch, offset, etc.). */
+  NvBufSurfacePlaneParams planeParams;
+  /** Holds pointers to mapped buffers. Initialized to NULL
+   when the structure is created. */
+  NvBufSurfaceMappedAddr mappedAddr;
+  /** pointers of extended parameters of single buffer in the batch.*/
+  NvBufSurfaceParamsEx *paramex;
+
+  void * _reserved[STRUCTURE_PADDING - 1];
+} NvBufSurfaceParams;
+
+/**
+ * Holds information about batched buffers.
+ */
+typedef struct NvBufSurface {
+  /** Holds a GPU ID. Valid only for a multi-GPU system. */
+  uint32_t gpuId;
+  /** Holds the batch size. */
+  uint32_t batchSize;
+  /** Holds the number valid and filled buffers. Initialized to zero when
+   an instance of the structure is created. */
+  uint32_t numFilled;
+  /** Holds an "is contiguous" flag. If set, memory allocated for the batch
+   is contiguous. */
+  bool isContiguous;
+  /** Holds type of memory for buffers in the batch. */
+  NvBufSurfaceMemType memType;
+  /** Holds a pointer to an array of batched buffers. */
+  NvBufSurfaceParams *surfaceList;
+
+  void * _reserved[STRUCTURE_PADDING];
+} NvBufSurface;
+
+/**
+ * \brief  Allocates a batch of buffers.
+ *
+ * Allocates memory for \a batchSize buffers and returns a pointer to an
+ * allocated \ref NvBufSurface. The \a params structure must have
+ * the allocation parameters of a single buffer. If \a params.size
+ * is set, a buffer of that size is allocated, and all other
+ * parameters (width, height, color format, etc.) are ignored.
+ *
+ * Call NvBufSurfaceDestroy() to free resources allocated by this function.
+ *
+ * @param[out] surf         An indirect pointer to the allocated batched
+ *                           buffers.
+ * @param[in]  batchSize    Batch size of buffers.
+ * @param[in]  params       A pointer to an \ref NvBufSurfaceCreateParams
+ *                           structure.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceCreate (NvBufSurface **surf, uint32_t batchSize,
+                        NvBufSurfaceCreateParams *params);
+
+/**
+ * \brief  Allocate batch of buffers. (Using extended buffer allocation parameters)
+ *
+ * Allocates memory for batchSize buffers and returns in *surf a pointer to allocated NvBufSurface.
+ * params structure should have allocation parameters of single buffer. If size field in
+ * params is set, buffer of that size will be allocated and all other
+ * parameters (w, h, color format etc.) will be ignored.
+ *
+ * Use NvBufSurfaceDestroy to free all the resources.
+ *
+ * @param[out] surf pointer to allocated batched buffers.
+ * @param[in] batchSize batch size of buffers.
+ * @param[in] paramsext pointer to NvBufSurfaceAllocateParams structure.
+ *
+ * @return 0 for success, -1 for failure.
+ */
+int NvBufSurfaceAllocate (NvBufSurface **surf, uint32_t batchSize,
+                          NvBufSurfaceAllocateParams *paramsext);
+
+/**
+ * Free the batched buffers previously allocated through NvBufSurfaceCreate.
+ *
+ * @param[in] surf  A pointer to an \ref NvBufSurface to be freed.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceDestroy (NvBufSurface *surf);
+
+/**
+ * \brief  Maps hardware batched buffers to the HOST or CPU address space.
+ *
+ * Valid for \ref NVBUF_MEM_CUDA_UNIFIED type memory for dGPU and
+ * \ref NVBUF_MEM_SURFACE_ARRAY and \ref NVBUF_MEM_HANDLE type memory for
+ * Jetson.
+ *
+ * This function fills an array of pointers at
+ * \a surf->surfaceList->mappedAddr->addr.
+ * \a surf is a pointer to an \ref NvBufSurface.
+ * \a surfaceList is a pointer to an \ref NvBufSurfaceParams.
+ * \a mappedAddr is a pointer to an \ref NvBufSurfaceMappedAddr.
+ * \a addr is declared as an array of pointers to void, and holds pointers
+ * to the buffers.
+ *
+ * The client must call NvBufSurfaceSyncForCpu() with the virtual address
+ * populated by this function before accessing mapped memory in the CPU.
+ *
+ * After memory mapping is complete, mapped memory modification
+ * must be coordinated between the CPU and the hardware device as
+ * follows:
+ * - CPU: If the CPU modifies mapped memory, the client must call
+ *   NvBufSurfaceSyncForDevice() before any hardware device accesses the memory.
+ * - Hardware device: If a hardware device modifies mapped memory, the client
+ *   must call NvBufSurfaceSyncForCpu() before the CPU accesses the memory.
+ *
+ * Use NvBufSurfaceUnMap() to unmap buffer(s) and release any resource.
+ *
+ * @param[in,out] surf  A pointer to an NvBufSurface structure. The function
+ *                      stores pointers to the buffers in a descendant of this
+ *                      structure; see the notes above.
+ * @param[in] index     Index of a buffer in the batch. -1 refers to all buffers
+ *                      in the batch.
+ * @param[in] plane     Index of a plane in buffer. -1 refers to all planes
+ *                      in the buffer.
+ * @param[in] type      A flag for mapping type.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceMap (NvBufSurface *surf, int index, int plane, NvBufSurfaceMemMapFlags type);
+
+/**
+ * \brief  Unmaps previously mapped buffer(s).
+ *
+ * @param[in] surf      A pointer to an \ref NvBufSurface structure.
+ * @param[in] index     Index of a buffer in the batch. -1 indicates
+ *                      all buffers in the batch.
+ * @param[in] plane     Index of a plane in the buffer. -1 indicates
+ *                      all planes in the buffer.
+ *
+ * @return  0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceUnMap (NvBufSurface *surf, int index, int plane);
+
+/**
+ * \brief  Copies the content of source batched buffer(s) to destination
+ * batched buffer(s).
+ *
+ * You can use this function to copy source buffer(s) of one memory type
+ * to destination buffer(s) of another memory type,
+ * e.g. CUDA host to CUDA device, malloc'ed memory to CUDA device, etc.
+ *
+ * The source and destination \ref NvBufSurface objects must have same
+ * buffer and batch size.
+ *
+ * @param[in] srcSurf   A pointer to the source NvBufSurface structure.
+ * @param[in] dstSurf   A pointer to the destination NvBufSurface structure.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceCopy (NvBufSurface *srcSurf, NvBufSurface *dstSurf);
+
+/**
+ * \brief Copies the NvBufSurface plane memory content to a raw buffer plane for a specific
+ * batched buffer.
+ *
+ * This function can be used to copy plane memory content from source raw buffer pointer
+ * to specific destination batch buffer of supported memory type.
+ *
+ * @param[in] Surf pointer to NvBufSurface structure.
+ * @param[in] index index of buffer in the batch.
+ * @param[in] plane index of plane in buffer.
+ * @param[in] out_width aligned width of the raw data plane.
+ * @param[in] out_height aligned height of the raw data plane.
+ * @param[in] ptr pointer to the output raw plane data.
+ *
+ * @return 0 for success, -1 for failure.
+ */
+int NvBufSurface2Raw (NvBufSurface *Surf, unsigned int index, unsigned int plane, unsigned int out_width, unsigned int out_height, unsigned char *ptr);
+
+/**
+ * \brief Copies the raw buffer plane memory content to the NvBufSurface plane memory of a specific
+ * batched buffer.
+ *
+ * This function can be used to copy plane memory content from batch buffer
+ * to specific destination raw buffer pointer.
+ *
+ * @param[in] ptr pointer to the input raw plane data.
+ * @param[in] index index of buffer in the batch.
+ * @param[in] plane index of plane in buffer.
+ * @param[in] in_width aligned width of the raw data plane.
+ * @param[in] in_height aligned height of the raw data plane.
+ * @param[in] Surf pointer to NvBufSurface structure.
+ *
+ * @return 0 for success, -1 for failure.
+ */
+int Raw2NvBufSurface (unsigned char *ptr, unsigned int index, unsigned int plane, unsigned int in_width, unsigned int in_height, NvBufSurface *Surf);
+
+/**
+ * Syncs the HW memory cache for the CPU.
+ *
+ * Valid only for memory types \ref NVBUF_MEM_SURFACE_ARRAY and
+ * \ref NVBUF_MEM_HANDLE.
+ *
+ * @param[in] surf      A pointer to an \ref NvBufSurface structure.
+ * @param[in] index     Index of the buffer in the batch. -1 refers to
+ *                      all buffers in the batch.
+ * @param[in] plane     Index of a plane in the buffer. -1 refers to all planes
+ *                      in the buffer.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceSyncForCpu (NvBufSurface *surf, int index, int plane);
+
+/**
+ * \brief  Syncs the hardware memory cache for the device.
+ *
+ * Valid only for memory types \ref NVBUF_MEM_SURFACE_ARRAY and
+ * \ref NVBUF_MEM_HANDLE.
+ *
+ * @param[in] surf      A pointer to an \ref NvBufSurface structure.
+ * @param[in] index     Index of a buffer in the batch. -1 refers to all buffers
+ *                      in the batch.
+ * @param[in] plane     Index of a plane in the buffer. -1 refers to all planes
+ *                      in the buffer.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceSyncForDevice (NvBufSurface *surf, int index, int plane);
+
+/**
+ * \brief  Gets the \ref NvBufSurface from the DMABUF FD.
+ *
+ * @param[in]  dmabuf_fd    DMABUF FD of the buffer.
+ * @param[out] buffer       A pointer to the NvBufSurface.
+ *
+ * @return 0 for success, or -1 otherwise.
+ */
+int NvBufSurfaceFromFd (int dmabuf_fd, void **buffer);
+
+/**
+ * \brief  Fills each byte of the buffer(s) in an \ref NvBufSurface with a
+ * provided value.
+ *
+ * You can also use this function to reset the buffer(s) in the batch.
+ *
+ * @param[in] surf  A pointer to the NvBufSurface structure.
+ * @param[in] index Index of a buffer in the batch. -1 refers to all buffers
+ *                  in the batch.
+ * @param[in] plane Index of a plane in the buffer. -1 refers to all planes
+ *                  in the buffer.
+ * @param[in] value The value to be used as fill.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceMemSet (NvBufSurface *surf, int index, int plane, uint8_t value);
+
+/**
+ * \brief  Creates an EGLImage from the memory of one or more
+ * \ref NvBufSurface buffers.
+ *
+ * Only memory type \ref NVBUF_MEM_SURFACE_ARRAY is supported.
+ *
+ * This function returns the created EGLImage by storing its address at
+ * \a surf->surfaceList->mappedAddr->eglImage. (\a surf is a pointer to
+ * an NvBufSurface. \a surfaceList is a pointer to an \ref NvBufSurfaceParams.
+ * \a mappedAddr is a pointer to an \ref NvBufSurfaceMappedAddr.
+ * \a eglImage is declared as a pointer to void, and holds an
+ * EGLImageKHR.)
+ *
+ * You can use this function in scenarios where a CUDA operation on Jetson
+ * hardware memory (identified by \ref NVBUF_MEM_SURFACE_ARRAY) is required.
+ * The EGLImageKHR struct provided by this function can then be registered
+ * with CUDA for further CUDA operations.
+ *
+ * @param[in,out] surf  A pointer to an NvBufSurface structure. The function
+ *                      stores a pointer to the created EGLImage in
+ *                      a descendant of this structure; see the notes above.
+ * @param[in]     index Index of a buffer in the batch. -1 specifies all buffers
+ *                      in the batch.
+ *
+ * @return 0 for success, or -1 otherwise.
+ */
+int NvBufSurfaceMapEglImage (NvBufSurface *surf, int index);
+
+/**
+ * \brief  Destroys the previously created EGLImage object(s).
+ *
+ * @param[in] surf      A pointer to an \ref NvBufSurface structure.
+ * @param[in] index     The index of a buffer in the batch. -1 specifies all
+ *                      buffers in the batch.
+ *
+ * @return 0 if successful, or -1 otherwise.
+ */
+int NvBufSurfaceUnMapEglImage (NvBufSurface *surf, int index);
+
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* NVBUFSURFACE_H_ */

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+jetson_35.1