mirror of
git://nv-tegra.nvidia.com/tegra/v4l2-src/v4l2_libs.git
synced 2025-12-22 09:21:28 +03:00
Updating prebuilts and/or headers
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libv4lconvert/se401.c 4bd081bf25b63f5463d582ef36f77ba5e3711d0d - libv4lconvert/sq905c.c 940250beb5898bf254e7cd1ef9d7950a8db10af6 - libv4lconvert/mr97310a.c 5e177c3a7c157c25c4afcae031e79830237510f6 - libv4lconvert/libv4lconvert.c 1f362080c319355070cf409cfccf28d8c68d024e - libv4lconvert/sn9c2028-decomp.c 703ce22dc98d834490c7aa23ae73b9113e386221 - libv4lconvert/sn9c20x.c 018e503969b2e06a0ea639fc08f03a7476cc15b5 - libv4lconvert/jpeg_memsrcdest.h fb3344cfa8df97688332ee4fd3b17968437e8ad5 - libv4lconvert/helper-funcs.h d378cbdd377027e7528af47362a94ccb1ae15da3 - libv4lconvert/libv4lconvert.export 61710972d4e9bfcd00490c563d1bb5bde5480c9e - libv4lconvert/tinyjpeg.c 231571db9f8caa6fdc68138102029127a6b93812 - libv4lconvert/crop.c d62448a06539ecf6e3daae7faa299b6da8878054 - libv4lconvert/pac207.c 72b65c9f0f3c87dcae86a2afbea65a76f2c6bafd - libv4lconvert/tinyjpeg-internal.h a016f896e0e9f0cd8af7447b52651ed14c5a5b29 - libv4lconvert/jpeg.c 608a4c341a5df9daea647fbddc415cdaf27b0482 - libv4lconvert/spca561-decompress.c b03b32eae024bf59b6ceaf6b6d342383cd0b0673 - 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include/libdvbv5/mpeg_ts.h ba205468e43ca16edf1ebec59dce9822044c1064 - include/libdvbv5/desc_registration_id.h e70b24d8d1f3a248735c2d724d3b92c49b7aaba5 - include/libdvbv5/dvb-log.h 2d0557eadd4cff02ab52e26778d35b6c34f09158 - libv4l2/libv4l2-priv.h 487af43db163be6d3604371b9a504c1df2a9bf6c - libv4l2/v4l2-plugin-android.c 0ac38b46fa1659db4c05660205f212389295e7ff - libv4l2/Makefile 8ac3789333a6cd18e7f35d3b66a8a4d0293feb78 - libv4l2/Makefile.dGPU fdd6e5e27aa8b41d5da77cb3b9be3fc3b8a44763 - libv4l2/libv4l2.export 1d37e5ea9231e7e0eea7d1a02938c6d1ae8ba791 - libv4l2/Makefile.in 51892a60925c37c865fe6eb9c923a552df180ebf - libv4l2/v4l2-plugin.c d4c7daee644a35244ac8a5e1009a3aeb1d4fd3da - libv4l2/Makefile.am 87856c7113d150dceb254b5d548f942e7fcaf8f1 - libv4l2/libv4l2.c d11ec5b8ce8390a72fd61457d7b8667378311191 - libv4l2/log.c cbcee4426c19c168c6f49d04af3a0b2e30c0b681 - libv4l2/libv4l2.pc.in 55bb16d05817a3ecf076174175b2ca5b56e729d8 - libv4l2/v4l2convert.c Change-Id: I4dd528ac6ac1e89b1e1ebadc7fdaf45cea9dcc98
This commit is contained in:
svcmobrel-release
673
libv4lconvert/bayer.c
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673
libv4lconvert/bayer.c
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/*
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* lib4lconvert, video4linux2 format conversion lib
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* (C) 2008 Hans de Goede <hdegoede@redhat.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
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*
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* Note: original bayer_to_bgr24 code from :
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* 1394-Based Digital Camera Control Library
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*
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* Bayer pattern decoding functions
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*
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* Written by Damien Douxchamps and Frederic Devernay
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*
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* Note that the original bayer.c in libdc1394 supports many different
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* bayer decode algorithms, for lib4lconvert the one in this file has been
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* chosen (and optimized a bit) and the other algorithms have been removed,
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* see bayer.c from libdc1394 for all supported algorithms
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*/
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#include <string.h>
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#include "libv4lconvert-priv.h"
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/**************************************************************
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* Color conversion functions for cameras that can *
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* output raw-Bayer pattern images, such as some Basler and *
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* Point Grey camera. Most of the algos presented here come *
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* from http://www-ise.stanford.edu/~tingchen/ and have been *
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* converted from Matlab to C and extended to all elementary *
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* patterns. *
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**************************************************************/
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/* inspired by OpenCV's Bayer decoding */
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static void v4lconvert_border_bayer_line_to_bgr24(
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const unsigned char *bayer, const unsigned char *adjacent_bayer,
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unsigned char *bgr, int width, const int start_with_green, const int blue_line)
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{
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int t0, t1;
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if (start_with_green) {
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/* First pixel */
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if (blue_line) {
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*bgr++ = bayer[1];
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*bgr++ = bayer[0];
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*bgr++ = adjacent_bayer[0];
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} else {
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*bgr++ = adjacent_bayer[0];
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*bgr++ = bayer[0];
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*bgr++ = bayer[1];
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}
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/* Second pixel */
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t0 = (bayer[0] + bayer[2] + adjacent_bayer[1] + 1) / 3;
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t1 = (adjacent_bayer[0] + adjacent_bayer[2] + 1) >> 1;
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if (blue_line) {
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*bgr++ = bayer[1];
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*bgr++ = t0;
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*bgr++ = t1;
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} else {
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*bgr++ = t1;
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*bgr++ = t0;
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*bgr++ = bayer[1];
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}
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bayer++;
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adjacent_bayer++;
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width -= 2;
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} else {
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/* First pixel */
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t0 = (bayer[1] + adjacent_bayer[0] + 1) >> 1;
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if (blue_line) {
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*bgr++ = bayer[0];
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*bgr++ = t0;
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*bgr++ = adjacent_bayer[1];
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} else {
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*bgr++ = adjacent_bayer[1];
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*bgr++ = t0;
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*bgr++ = bayer[0];
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}
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width--;
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}
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if (blue_line) {
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for ( ; width > 2; width -= 2) {
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t0 = (bayer[0] + bayer[2] + 1) >> 1;
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*bgr++ = t0;
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*bgr++ = bayer[1];
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*bgr++ = adjacent_bayer[1];
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bayer++;
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adjacent_bayer++;
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t0 = (bayer[0] + bayer[2] + adjacent_bayer[1] + 1) / 3;
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t1 = (adjacent_bayer[0] + adjacent_bayer[2] + 1) >> 1;
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*bgr++ = bayer[1];
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*bgr++ = t0;
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*bgr++ = t1;
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bayer++;
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adjacent_bayer++;
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}
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} else {
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for ( ; width > 2; width -= 2) {
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t0 = (bayer[0] + bayer[2] + 1) >> 1;
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*bgr++ = adjacent_bayer[1];
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*bgr++ = bayer[1];
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*bgr++ = t0;
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bayer++;
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adjacent_bayer++;
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t0 = (bayer[0] + bayer[2] + adjacent_bayer[1] + 1) / 3;
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t1 = (adjacent_bayer[0] + adjacent_bayer[2] + 1) >> 1;
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*bgr++ = t1;
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*bgr++ = t0;
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*bgr++ = bayer[1];
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bayer++;
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adjacent_bayer++;
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}
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}
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if (width == 2) {
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/* Second to last pixel */
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t0 = (bayer[0] + bayer[2] + 1) >> 1;
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if (blue_line) {
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*bgr++ = t0;
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*bgr++ = bayer[1];
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*bgr++ = adjacent_bayer[1];
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} else {
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*bgr++ = adjacent_bayer[1];
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*bgr++ = bayer[1];
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*bgr++ = t0;
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}
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/* Last pixel */
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t0 = (bayer[1] + adjacent_bayer[2] + 1) >> 1;
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if (blue_line) {
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*bgr++ = bayer[2];
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*bgr++ = t0;
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*bgr++ = adjacent_bayer[1];
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} else {
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*bgr++ = adjacent_bayer[1];
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*bgr++ = t0;
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*bgr++ = bayer[2];
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}
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} else {
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/* Last pixel */
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if (blue_line) {
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*bgr++ = bayer[0];
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*bgr++ = bayer[1];
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*bgr++ = adjacent_bayer[1];
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} else {
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*bgr++ = adjacent_bayer[1];
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*bgr++ = bayer[1];
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*bgr++ = bayer[0];
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}
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}
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}
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/* From libdc1394, which on turn was based on OpenCV's Bayer decoding */
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static void bayer_to_rgbbgr24(const unsigned char *bayer,
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unsigned char *bgr, int width, int height, const unsigned int stride, unsigned int pixfmt,
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int start_with_green, int blue_line)
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{
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/* render the first line */
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v4lconvert_border_bayer_line_to_bgr24(bayer, bayer + stride, bgr, width,
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start_with_green, blue_line);
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bgr += width * 3;
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/* reduce height by 2 because of the special case top/bottom line */
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for (height -= 2; height; height--) {
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int t0, t1;
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/* (width - 2) because of the border */
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const unsigned char *bayer_end = bayer + (width - 2);
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if (start_with_green) {
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t0 = (bayer[1] + bayer[stride * 2 + 1] + 1) >> 1;
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/* Write first pixel */
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t1 = (bayer[0] + bayer[stride * 2] + bayer[stride + 1] + 1) / 3;
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if (blue_line) {
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*bgr++ = t0;
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*bgr++ = t1;
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*bgr++ = bayer[stride];
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} else {
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*bgr++ = bayer[stride];
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*bgr++ = t1;
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*bgr++ = t0;
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}
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/* Write second pixel */
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t1 = (bayer[stride] + bayer[stride + 2] + 1) >> 1;
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if (blue_line) {
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*bgr++ = t0;
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*bgr++ = bayer[stride + 1];
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*bgr++ = t1;
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} else {
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*bgr++ = t1;
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*bgr++ = bayer[stride + 1];
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*bgr++ = t0;
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}
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bayer++;
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||||
} else {
|
||||
/* Write first pixel */
|
||||
t0 = (bayer[0] + bayer[stride * 2] + 1) >> 1;
|
||||
if (blue_line) {
|
||||
*bgr++ = t0;
|
||||
*bgr++ = bayer[stride];
|
||||
*bgr++ = bayer[stride + 1];
|
||||
} else {
|
||||
*bgr++ = bayer[stride + 1];
|
||||
*bgr++ = bayer[stride];
|
||||
*bgr++ = t0;
|
||||
}
|
||||
}
|
||||
|
||||
if (blue_line) {
|
||||
for (; bayer <= bayer_end - 2; bayer += 2) {
|
||||
t0 = (bayer[0] + bayer[2] + bayer[stride * 2] +
|
||||
bayer[stride * 2 + 2] + 2) >> 2;
|
||||
t1 = (bayer[1] + bayer[stride] + bayer[stride + 2] +
|
||||
bayer[stride * 2 + 1] + 2) >> 2;
|
||||
*bgr++ = t0;
|
||||
*bgr++ = t1;
|
||||
*bgr++ = bayer[stride + 1];
|
||||
|
||||
t0 = (bayer[2] + bayer[stride * 2 + 2] + 1) >> 1;
|
||||
t1 = (bayer[stride + 1] + bayer[stride + 3] + 1) >> 1;
|
||||
*bgr++ = t0;
|
||||
*bgr++ = bayer[stride + 2];
|
||||
*bgr++ = t1;
|
||||
}
|
||||
} else {
|
||||
for (; bayer <= bayer_end - 2; bayer += 2) {
|
||||
t0 = (bayer[0] + bayer[2] + bayer[stride * 2] +
|
||||
bayer[stride * 2 + 2] + 2) >> 2;
|
||||
t1 = (bayer[1] + bayer[stride] + bayer[stride + 2] +
|
||||
bayer[stride * 2 + 1] + 2) >> 2;
|
||||
*bgr++ = bayer[stride + 1];
|
||||
*bgr++ = t1;
|
||||
*bgr++ = t0;
|
||||
|
||||
t0 = (bayer[2] + bayer[stride * 2 + 2] + 1) >> 1;
|
||||
t1 = (bayer[stride + 1] + bayer[stride + 3] + 1) >> 1;
|
||||
*bgr++ = t1;
|
||||
*bgr++ = bayer[stride + 2];
|
||||
*bgr++ = t0;
|
||||
}
|
||||
}
|
||||
|
||||
if (bayer < bayer_end) {
|
||||
/* write second to last pixel */
|
||||
t0 = (bayer[0] + bayer[2] + bayer[stride * 2] +
|
||||
bayer[stride * 2 + 2] + 2) >> 2;
|
||||
t1 = (bayer[1] + bayer[stride] + bayer[stride + 2] +
|
||||
bayer[stride * 2 + 1] + 2) >> 2;
|
||||
if (blue_line) {
|
||||
*bgr++ = t0;
|
||||
*bgr++ = t1;
|
||||
*bgr++ = bayer[stride + 1];
|
||||
} else {
|
||||
*bgr++ = bayer[stride + 1];
|
||||
*bgr++ = t1;
|
||||
*bgr++ = t0;
|
||||
}
|
||||
/* write last pixel */
|
||||
t0 = (bayer[2] + bayer[stride * 2 + 2] + 1) >> 1;
|
||||
if (blue_line) {
|
||||
*bgr++ = t0;
|
||||
*bgr++ = bayer[stride + 2];
|
||||
*bgr++ = bayer[stride + 1];
|
||||
} else {
|
||||
*bgr++ = bayer[stride + 1];
|
||||
*bgr++ = bayer[stride + 2];
|
||||
*bgr++ = t0;
|
||||
}
|
||||
|
||||
bayer++;
|
||||
|
||||
} else {
|
||||
/* write last pixel */
|
||||
t0 = (bayer[0] + bayer[stride * 2] + 1) >> 1;
|
||||
t1 = (bayer[1] + bayer[stride * 2 + 1] + bayer[stride] + 1) / 3;
|
||||
if (blue_line) {
|
||||
*bgr++ = t0;
|
||||
*bgr++ = t1;
|
||||
*bgr++ = bayer[stride + 1];
|
||||
} else {
|
||||
*bgr++ = bayer[stride + 1];
|
||||
*bgr++ = t1;
|
||||
*bgr++ = t0;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
/* skip 2 border pixels and padding */
|
||||
bayer += (stride - width) + 2;
|
||||
|
||||
blue_line = !blue_line;
|
||||
start_with_green = !start_with_green;
|
||||
}
|
||||
|
||||
/* render the last line */
|
||||
v4lconvert_border_bayer_line_to_bgr24(bayer + stride, bayer, bgr, width,
|
||||
!start_with_green, !blue_line);
|
||||
}
|
||||
|
||||
void v4lconvert_bayer_to_rgb24(const unsigned char *bayer,
|
||||
unsigned char *bgr, int width, int height, const unsigned int stride, unsigned int pixfmt)
|
||||
{
|
||||
bayer_to_rgbbgr24(bayer, bgr, width, height, stride, pixfmt,
|
||||
pixfmt == V4L2_PIX_FMT_SGBRG8 /* start with green */
|
||||
|| pixfmt == V4L2_PIX_FMT_SGRBG8,
|
||||
pixfmt != V4L2_PIX_FMT_SBGGR8 /* blue line */
|
||||
&& pixfmt != V4L2_PIX_FMT_SGBRG8);
|
||||
}
|
||||
|
||||
void v4lconvert_bayer_to_bgr24(const unsigned char *bayer,
|
||||
unsigned char *bgr, int width, int height, const unsigned int stride, unsigned int pixfmt)
|
||||
{
|
||||
bayer_to_rgbbgr24(bayer, bgr, width, height, stride, pixfmt,
|
||||
pixfmt == V4L2_PIX_FMT_SGBRG8 /* start with green */
|
||||
|| pixfmt == V4L2_PIX_FMT_SGRBG8,
|
||||
pixfmt == V4L2_PIX_FMT_SBGGR8 /* blue line */
|
||||
|| pixfmt == V4L2_PIX_FMT_SGBRG8);
|
||||
}
|
||||
|
||||
static void v4lconvert_border_bayer_line_to_y(
|
||||
const unsigned char *bayer, const unsigned char *adjacent_bayer,
|
||||
unsigned char *y, int width, int start_with_green, int blue_line)
|
||||
{
|
||||
int t0, t1;
|
||||
|
||||
if (start_with_green) {
|
||||
/* First pixel */
|
||||
if (blue_line) {
|
||||
*y++ = (8453 * adjacent_bayer[0] + 16594 * bayer[0] +
|
||||
3223 * bayer[1] + 524288) >> 15;
|
||||
} else {
|
||||
*y++ = (8453 * bayer[1] + 16594 * bayer[0] +
|
||||
3223 * adjacent_bayer[0] + 524288) >> 15;
|
||||
}
|
||||
/* Second pixel */
|
||||
t0 = bayer[0] + bayer[2] + adjacent_bayer[1];
|
||||
t1 = adjacent_bayer[0] + adjacent_bayer[2];
|
||||
if (blue_line)
|
||||
*y++ = (4226 * t1 + 5531 * t0 + 3223 * bayer[1] + 524288) >> 15;
|
||||
else
|
||||
*y++ = (8453 * bayer[1] + 5531 * t0 + 1611 * t1 + 524288) >> 15;
|
||||
bayer++;
|
||||
adjacent_bayer++;
|
||||
width -= 2;
|
||||
} else {
|
||||
/* First pixel */
|
||||
t0 = bayer[1] + adjacent_bayer[0];
|
||||
if (blue_line) {
|
||||
*y++ = (8453 * adjacent_bayer[1] + 8297 * t0 +
|
||||
3223 * bayer[0] + 524288) >> 15;
|
||||
} else {
|
||||
*y++ = (8453 * bayer[0] + 8297 * t0 +
|
||||
3223 * adjacent_bayer[1] + 524288) >> 15;
|
||||
}
|
||||
width--;
|
||||
}
|
||||
|
||||
if (blue_line) {
|
||||
for ( ; width > 2; width -= 2) {
|
||||
t0 = bayer[0] + bayer[2];
|
||||
*y++ = (8453 * adjacent_bayer[1] + 16594 * bayer[1] +
|
||||
1611 * t0 + 524288) >> 15;
|
||||
bayer++;
|
||||
adjacent_bayer++;
|
||||
|
||||
t0 = bayer[0] + bayer[2] + adjacent_bayer[1];
|
||||
t1 = adjacent_bayer[0] + adjacent_bayer[2];
|
||||
*y++ = (4226 * t1 + 5531 * t0 + 3223 * bayer[1] + 524288) >> 15;
|
||||
bayer++;
|
||||
adjacent_bayer++;
|
||||
}
|
||||
} else {
|
||||
for ( ; width > 2; width -= 2) {
|
||||
t0 = bayer[0] + bayer[2];
|
||||
*y++ = (4226 * t0 + 16594 * bayer[1] +
|
||||
3223 * adjacent_bayer[1] + 524288) >> 15;
|
||||
bayer++;
|
||||
adjacent_bayer++;
|
||||
|
||||
t0 = bayer[0] + bayer[2] + adjacent_bayer[1];
|
||||
t1 = adjacent_bayer[0] + adjacent_bayer[2];
|
||||
*y++ = (8453 * bayer[1] + 5531 * t0 + 1611 * t1 + 524288) >> 15;
|
||||
bayer++;
|
||||
adjacent_bayer++;
|
||||
}
|
||||
}
|
||||
|
||||
if (width == 2) {
|
||||
/* Second to last pixel */
|
||||
t0 = bayer[0] + bayer[2];
|
||||
if (blue_line) {
|
||||
*y++ = (8453 * adjacent_bayer[1] + 16594 * bayer[1] +
|
||||
1611 * t0 + 524288) >> 15;
|
||||
} else {
|
||||
*y++ = (4226 * t0 + 16594 * bayer[1] +
|
||||
3223 * adjacent_bayer[1] + 524288) >> 15;
|
||||
}
|
||||
/* Last pixel */
|
||||
t0 = bayer[1] + adjacent_bayer[2];
|
||||
if (blue_line) {
|
||||
*y++ = (8453 * adjacent_bayer[1] + 8297 * t0 +
|
||||
3223 * bayer[2] + 524288) >> 15;
|
||||
} else {
|
||||
*y++ = (8453 * bayer[2] + 8297 * t0 +
|
||||
3223 * adjacent_bayer[1] + 524288) >> 15;
|
||||
}
|
||||
} else {
|
||||
/* Last pixel */
|
||||
if (blue_line) {
|
||||
*y++ = (8453 * adjacent_bayer[1] + 16594 * bayer[1] +
|
||||
3223 * bayer[0] + 524288) >> 15;
|
||||
} else {
|
||||
*y++ = (8453 * bayer[0] + 16594 * bayer[1] +
|
||||
3223 * adjacent_bayer[1] + 524288) >> 15;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void v4lconvert_bayer_to_yuv420(const unsigned char *bayer, unsigned char *yuv,
|
||||
int width, int height, const unsigned int stride, unsigned int src_pixfmt, int yvu)
|
||||
{
|
||||
int blue_line = 0, start_with_green = 0, x, y;
|
||||
unsigned char *ydst = yuv;
|
||||
unsigned char *udst, *vdst;
|
||||
|
||||
if (yvu) {
|
||||
vdst = yuv + width * height;
|
||||
udst = vdst + width * height / 4;
|
||||
} else {
|
||||
udst = yuv + width * height;
|
||||
vdst = udst + width * height / 4;
|
||||
}
|
||||
|
||||
/* First calculate the u and v planes 2x2 pixels at a time */
|
||||
switch (src_pixfmt) {
|
||||
case V4L2_PIX_FMT_SBGGR8:
|
||||
for (y = 0; y < height; y += 2) {
|
||||
for (x = 0; x < width; x += 2) {
|
||||
int b, g, r;
|
||||
|
||||
b = bayer[x];
|
||||
g = bayer[x + 1];
|
||||
g += bayer[x + stride];
|
||||
r = bayer[x + stride + 1];
|
||||
*udst++ = (-4878 * r - 4789 * g + 14456 * b + 4210688) >> 15;
|
||||
*vdst++ = (14456 * r - 6052 * g - 2351 * b + 4210688) >> 15;
|
||||
}
|
||||
bayer += 2 * stride;
|
||||
}
|
||||
blue_line = 1;
|
||||
break;
|
||||
|
||||
case V4L2_PIX_FMT_SRGGB8:
|
||||
for (y = 0; y < height; y += 2) {
|
||||
for (x = 0; x < width; x += 2) {
|
||||
int b, g, r;
|
||||
|
||||
r = bayer[x];
|
||||
g = bayer[x + 1];
|
||||
g += bayer[x + stride];
|
||||
b = bayer[x + stride + 1];
|
||||
*udst++ = (-4878 * r - 4789 * g + 14456 * b + 4210688) >> 15;
|
||||
*vdst++ = (14456 * r - 6052 * g - 2351 * b + 4210688) >> 15;
|
||||
}
|
||||
bayer += 2 * stride;
|
||||
}
|
||||
break;
|
||||
|
||||
case V4L2_PIX_FMT_SGBRG8:
|
||||
for (y = 0; y < height; y += 2) {
|
||||
for (x = 0; x < width; x += 2) {
|
||||
int b, g, r;
|
||||
|
||||
g = bayer[x];
|
||||
b = bayer[x + 1];
|
||||
r = bayer[x + stride];
|
||||
g += bayer[x + stride + 1];
|
||||
*udst++ = (-4878 * r - 4789 * g + 14456 * b + 4210688) >> 15;
|
||||
*vdst++ = (14456 * r - 6052 * g - 2351 * b + 4210688) >> 15;
|
||||
}
|
||||
bayer += 2 * stride;
|
||||
}
|
||||
blue_line = 1;
|
||||
start_with_green = 1;
|
||||
break;
|
||||
|
||||
case V4L2_PIX_FMT_SGRBG8:
|
||||
for (y = 0; y < height; y += 2) {
|
||||
for (x = 0; x < width; x += 2) {
|
||||
int b, g, r;
|
||||
|
||||
g = bayer[x];
|
||||
r = bayer[x + 1];
|
||||
b = bayer[x + stride];
|
||||
g += bayer[x + stride + 1];
|
||||
*udst++ = (-4878 * r - 4789 * g + 14456 * b + 4210688) >> 15;
|
||||
*vdst++ = (14456 * r - 6052 * g - 2351 * b + 4210688) >> 15;
|
||||
}
|
||||
bayer += 2 * stride;
|
||||
}
|
||||
start_with_green = 1;
|
||||
break;
|
||||
}
|
||||
|
||||
/* Point bayer back to start of frame */
|
||||
bayer -= stride * height;
|
||||
|
||||
/* render the first line */
|
||||
v4lconvert_border_bayer_line_to_y(bayer, bayer + stride, ydst, width,
|
||||
start_with_green, blue_line);
|
||||
ydst += width;
|
||||
|
||||
/* reduce height by 2 because of the border */
|
||||
for (height -= 2; height; height--) {
|
||||
int t0, t1;
|
||||
/* (width - 2) because of the border */
|
||||
const unsigned char *bayer_end = bayer + (width - 2);
|
||||
|
||||
if (start_with_green) {
|
||||
t0 = bayer[1] + bayer[stride * 2 + 1];
|
||||
/* Write first pixel */
|
||||
t1 = bayer[0] + bayer[stride * 2] + bayer[stride + 1];
|
||||
if (blue_line)
|
||||
*ydst++ = (8453 * bayer[stride] + 5516 * t1 +
|
||||
1661 * t0 + 524288) >> 15;
|
||||
else
|
||||
*ydst++ = (4226 * t0 + 5516 * t1 +
|
||||
3223 * bayer[stride] + 524288) >> 15;
|
||||
|
||||
/* Write second pixel */
|
||||
t1 = bayer[stride] + bayer[stride + 2];
|
||||
if (blue_line)
|
||||
*ydst++ = (4226 * t1 + 16594 * bayer[stride + 1] +
|
||||
1611 * t0 + 524288) >> 15;
|
||||
else
|
||||
*ydst++ = (4226 * t0 + 16594 * bayer[stride + 1] +
|
||||
1611 * t1 + 524288) >> 15;
|
||||
bayer++;
|
||||
} else {
|
||||
/* Write first pixel */
|
||||
t0 = bayer[0] + bayer[stride * 2];
|
||||
if (blue_line) {
|
||||
*ydst++ = (8453 * bayer[stride + 1] + 16594 * bayer[stride] +
|
||||
1661 * t0 + 524288) >> 15;
|
||||
} else {
|
||||
*ydst++ = (4226 * t0 + 16594 * bayer[stride] +
|
||||
3223 * bayer[stride + 1] + 524288) >> 15;
|
||||
}
|
||||
}
|
||||
|
||||
if (blue_line) {
|
||||
for (; bayer <= bayer_end - 2; bayer += 2) {
|
||||
t0 = bayer[0] + bayer[2] + bayer[stride * 2] + bayer[stride * 2 + 2];
|
||||
t1 = bayer[1] + bayer[stride] + bayer[stride + 2] + bayer[stride * 2 + 1];
|
||||
*ydst++ = (8453 * bayer[stride + 1] + 4148 * t1 +
|
||||
806 * t0 + 524288) >> 15;
|
||||
|
||||
t0 = bayer[2] + bayer[stride * 2 + 2];
|
||||
t1 = bayer[stride + 1] + bayer[stride + 3];
|
||||
*ydst++ = (4226 * t1 + 16594 * bayer[stride + 2] +
|
||||
1611 * t0 + 524288) >> 15;
|
||||
}
|
||||
} else {
|
||||
for (; bayer <= bayer_end - 2; bayer += 2) {
|
||||
t0 = bayer[0] + bayer[2] + bayer[stride * 2] + bayer[stride * 2 + 2];
|
||||
t1 = bayer[1] + bayer[stride] + bayer[stride + 2] + bayer[stride * 2 + 1];
|
||||
*ydst++ = (2113 * t0 + 4148 * t1 +
|
||||
3223 * bayer[stride + 1] + 524288) >> 15;
|
||||
|
||||
t0 = bayer[2] + bayer[stride * 2 + 2];
|
||||
t1 = bayer[stride + 1] + bayer[stride + 3];
|
||||
*ydst++ = (4226 * t0 + 16594 * bayer[stride + 2] +
|
||||
1611 * t1 + 524288) >> 15;
|
||||
}
|
||||
}
|
||||
|
||||
if (bayer < bayer_end) {
|
||||
/* Write second to last pixel */
|
||||
t0 = bayer[0] + bayer[2] + bayer[stride * 2] + bayer[stride * 2 + 2];
|
||||
t1 = bayer[1] + bayer[stride] + bayer[stride + 2] + bayer[stride * 2 + 1];
|
||||
if (blue_line)
|
||||
*ydst++ = (8453 * bayer[stride + 1] + 4148 * t1 +
|
||||
806 * t0 + 524288) >> 15;
|
||||
else
|
||||
*ydst++ = (2113 * t0 + 4148 * t1 +
|
||||
3223 * bayer[stride + 1] + 524288) >> 15;
|
||||
|
||||
/* write last pixel */
|
||||
t0 = bayer[2] + bayer[stride * 2 + 2];
|
||||
if (blue_line) {
|
||||
*ydst++ = (8453 * bayer[stride + 1] + 16594 * bayer[stride + 2] +
|
||||
1661 * t0 + 524288) >> 15;
|
||||
} else {
|
||||
*ydst++ = (4226 * t0 + 16594 * bayer[stride + 2] +
|
||||
3223 * bayer[stride + 1] + 524288) >> 15;
|
||||
}
|
||||
bayer++;
|
||||
} else {
|
||||
/* write last pixel */
|
||||
t0 = bayer[0] + bayer[stride * 2];
|
||||
t1 = bayer[1] + bayer[stride * 2 + 1] + bayer[stride];
|
||||
if (blue_line)
|
||||
*ydst++ = (8453 * bayer[stride + 1] + 5516 * t1 +
|
||||
1661 * t0 + 524288) >> 15;
|
||||
else
|
||||
*ydst++ = (4226 * t0 + 5516 * t1 +
|
||||
3223 * bayer[stride + 1] + 524288) >> 15;
|
||||
}
|
||||
|
||||
/* skip 2 border pixels and padding */
|
||||
bayer += (stride - width) + 2;
|
||||
|
||||
blue_line = !blue_line;
|
||||
start_with_green = !start_with_green;
|
||||
}
|
||||
|
||||
/* render the last line */
|
||||
v4lconvert_border_bayer_line_to_y(bayer + stride, bayer, ydst, width,
|
||||
!start_with_green, !blue_line);
|
||||
}
|
||||
|
||||
void v4lconvert_bayer10_to_bayer8(void *bayer10,
|
||||
unsigned char *bayer8, int width, int height)
|
||||
{
|
||||
int i;
|
||||
uint16_t *src = bayer10;
|
||||
|
||||
for (i = 0; i < width * height; i++)
|
||||
bayer8[i] = src[i] >> 2;
|
||||
}
|
||||
|
||||
void v4lconvert_bayer10p_to_bayer8(unsigned char *bayer10p,
|
||||
unsigned char *bayer8, int width, int height)
|
||||
{
|
||||
unsigned long i;
|
||||
unsigned long len = width * height;
|
||||
|
||||
for (i = 0; i < len ; i += 4) {
|
||||
/*
|
||||
* Do not use a second loop, hoping that
|
||||
* a clever compiler with understand the
|
||||
* pattern and will optimize it.
|
||||
*/
|
||||
bayer8[0] = bayer10p[0];
|
||||
bayer8[1] = bayer10p[1];
|
||||
bayer8[2] = bayer10p[2];
|
||||
bayer8[3] = bayer10p[3];
|
||||
bayer10p += 5;
|
||||
bayer8 += 4;
|
||||
}
|
||||
}
|
||||
|
||||
void v4lconvert_bayer16_to_bayer8(unsigned char *bayer16,
|
||||
unsigned char *bayer8, int width, int height)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < width * height; i++)
|
||||
bayer8[i] = bayer16[2*i+1];
|
||||
}
|
||||
Reference in New Issue
Block a user