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
f751b481c4a9203345cdbb6459d0f2882f7cdbd9 - include/libv4lconvert.h 6feb5b2b8c99c99712dd1ea7fe9ab674d58bf86b - include/libv4l1.h f2b73fa5ab10ea7038e58bd9a4461d8e16316249 - include/libv4l1-videodev.h bc44111fd6b2f0374a9fc67b1b23666c5c498b2c - include/libv4l2rds.h 94434b9692371b7d5f54ddef2141d22d90079ce9 - include/libv4l-plugin.h c84a9a115a21d1fd20da0f6ca3df7b46dd23cd2a - include/config.h 1edc439e6c0fc98513fa4a69557eb6221d043be0 - include/libv4l2.h 2f55ba765c689500401111747bb381b5aca77b30 - include/libdvbv5/desc_ca.h 4c412880f0c49cd00cb16e56eed082c4744211a5 - include/libdvbv5/countries.h c1212a9308d96730de547648d3cda2fc144d0e29 - include/libdvbv5/desc_atsc_service_location.h 4fe7def34ff640fc5e327b3596298169fdfe2f1c - include/libdvbv5/mpeg_ts.h ef979f3276cc3cad6e947865a42643fbba860c69 - include/libdvbv5/mgt.h ac87e3306569dae329809f27ef227c5d50f0b60e - include/libdvbv5/desc_event_short.h 98365b48442b9e3abb58101983b5da8c14f78289 - include/libdvbv5/dvb-v5-std.h 9a2b20076d6728b5799096e4149e33a73119e1ef - include/libdvbv5/desc_sat.h c8b4fc511833f0993fa740a529e1f61e0f5a216f - include/libdvbv5/mpeg_es.h 44ab16a8d4eae09690c71a6301927c1da55dda6d - include/libdvbv5/descriptors.h 9d523ee179af955a687662996050ee3cfaacf2ab - include/libdvbv5/crc32.h c18291ff9009bfe71a2c7c6f0fce75331dc95e30 - include/libdvbv5/sdt.h 02168c58e3c772f116f075085579ac4a8422e819 - include/libdvbv5/desc_terrestrial_delivery.h bdf514383ca0afe981cf4fd6af86440db2dc6667 - include/libdvbv5/pat.h 22c83d133e5c1d2648efb3028e0d89c970d0aad4 - include/libdvbv5/desc_partial_reception.h 96db22ef84892a36d5df3cffa0b30d5bad01939c - include/libdvbv5/desc_logical_channel.h 73b7b0cf684de0e8a4eae49a8521f81b411d7b72 - include/libdvbv5/desc_ts_info.h 7fb0966c6a1ccdf1a8844aed4a94d4ae1d02fcd7 - include/libdvbv5/dvb-fe.h 6e6fd4c61c1f61006c63214cbe4868d49428ddb9 - include/libdvbv5/mpeg_pes.h efa3a711499f68ae370d49d98dc1963bf6bafcd8 - include/libdvbv5/desc_extension.h d562371bb8a3b961c4d63a0f5618453bdff4bcd3 - include/libdvbv5/dvb-log.h b72b6d1ffcdd81e3e631c7c20bb30e5c287dc7ff - include/libdvbv5/vct.h 92d4c28148d0b537c8afc289e1a76de68435cba0 - include/libdvbv5/dvb-scan.h 6bd2ed0beaf6aa4838e239198564fd8e1d20a3a1 - include/libdvbv5/desc_t2_delivery.h ad13bfa0b1642fc72cca387e62bc193974c8d5ee - include/libdvbv5/atsc_header.h 450fab787e61210c0c5f527df92c31c90b44a113 - include/libdvbv5/desc_service.h 9b5cfad4a5f41cbf886507da6e79b07314827b32 - include/libdvbv5/desc_language.h e81b7f75c11f175cf365fc7fb535e80828f10e24 - include/libdvbv5/dvb-file.h 30e9a7240938943de2725f2b335b19ad320179a5 - include/libdvbv5/header.h 188fc2cbec97288787a7f66554a4b6288224f980 - include/libdvbv5/desc_isdbt_delivery.h 7645dda247bcd45628afbb74ec2707a47050992e - include/libdvbv5/nit.h 1ba874a7cad36ff31e4af3bfb37b98c05063d6b2 - include/libdvbv5/desc_event_extended.h 146f4f53fc49c66b59905249c0142efffd72fc54 - include/libdvbv5/desc_network_name.h 5b4a5e7fb30a7f28118be012837e73a7151d2619 - include/libdvbv5/cat.h d7a096d51e3050c8f52e0e2111d88b71a5313da1 - include/libdvbv5/dvb-demux.h 40a06b5375dbc0de88a15d26cc6c1e9a505119bc - include/libdvbv5/eit.h 7544b5fb8f621a9c637c40d8f7a2a71f6ab4bd63 - include/libdvbv5/desc_hierarchy.h 2560f18846a535a2c02e1ae449511e731f11c011 - include/libdvbv5/desc_ca_identifier.h 100c02ce3bc364ddff895c75f4fb1f928a748d2d - include/libdvbv5/desc_cable_delivery.h 7a6093b13354d054cac78ea118a96e813cac3395 - include/libdvbv5/atsc_eit.h cabecc6d7c9fdf1c437273bd6a746bf83c156f72 - include/libdvbv5/desc_frequency_list.h b867a2e7941d718aa64b2f6a1402322b616cb2da - include/libdvbv5/pmt.h fb8d640da36b6a156cbe0ef12dc25468de89a2a1 - include/libdvbv5/dvb-sat.h 5e2dfc1d9a71805389e9a7932812695d0309050c - include/libdvbv5/dvb-frontend.h 5430e46abb1ac7039ed0309ca338237533ff29c9 - libv4lconvert/sn9c20x.c f4d73412805f12fa08dd79a43798a7f8d7acece9 - libv4lconvert/pac207.c 3c49d99b9753208a9c1c2a9c738a1e7ad291ca22 - libv4lconvert/jpeg_memsrcdest.h ddd39b2fe0e2a86a6c64031ccc0d36edfd9b0f1a - libv4lconvert/sn9c10x.c 463725aa4dd3fecaf89c0b8bbf4747f8f7577935 - libv4lconvert/jpeg.c fa751ff0f78845f3b4591396710df3b165bc8d11 - libv4lconvert/mr97310a.c 3e8e6c1fb85e3c4b58c4e9b2b0a223ddc793edcb - libv4lconvert/libv4lconvert.pc.in b2c19c2eac71d39d3fb883cdc159a69c2afa8fd6 - libv4lconvert/ov511-decomp.c f08c902ecd48c2739956606b502fc0b8e4007703 - libv4lconvert/crop.c 1949e23fe99ccd0a05dcd084848f6d38b0af7ab6 - libv4lconvert/hm12.c 1d9c446cd8a232da87bd79acebc93e018ec72499 - libv4lconvert/jidctflt.c 8b7644ac3d5c4161cfb6dcc2a34013f4c379c665 - libv4lconvert/libv4lconvert.export ebebd4b880fc415f09f76597b2ac7f30e79212b9 - libv4lconvert/Makefile ff7444c48a8da88f8a466cfb138e30e585828cb3 - libv4lconvert/jl2005bcd.c 033894511bd7e8a374a52486889658faa17918c4 - libv4lconvert/flip.c 25130d299463897a09e8b9adf72389dac2e89fa4 - libv4lconvert/tinyjpeg-internal.h cc3f3e94a21795990610e63887c30528bde7b42e - libv4lconvert/bayer.c 1f1d1e05443c4b824cd697c0ce5efa9ea1277964 - libv4lconvert/ov518-decomp.c 3271d74d02e2f33c16e3e50aeb1268eb9c440782 - libv4lconvert/rgbyuv.c 725c9b8d0bfadba566cf200921e602961cb12705 - libv4lconvert/spca561-decompress.c 84c9c3812d4b5f237c8cd616d37fc1161a212acc - libv4lconvert/se401.c b694b6348e035b3da880824c2c2768145c9b5199 - libv4lconvert/jpeg_memsrcdest.c 66dd7958319442bd52ba40ede28fbfe31bb4e074 - libv4lconvert/cpia1.c 6ad4947dca51a7e67e056561cdb445d6c354d23c - libv4lconvert/libv4lconvert.c cc8982bb6f753249181c715fe6430ffefc78c23b - libv4lconvert/stv0680.c 72953a5a3a56b0188d35f49246356b9c8c35756c - libv4lconvert/helper.c db3c69c666e451c5d4ef6d1b5a3117f4b128baa4 - libv4lconvert/libv4lconvert-priv.h 803c4d0b9364050eda163452b8792e62e221ab6d - libv4lconvert/tinyjpeg.h fb3344cfa8df97688332ee4fd3b17968437e8ad5 - libv4lconvert/helper-funcs.h 60e29f95ea52df4407d771330897813cdb38340f - libv4lconvert/libv4lsyscall-priv.h fbbffd8182b4fe2e85289b6e784f70cba7ea7b1d - libv4lconvert/sq905c.c 4eff5c1a5e0b99ce4d6e9aa63645d9628467fdc3 - libv4lconvert/sn9c2028-decomp.c 22a502c238e48f4b939c81de41feccfc7c366766 - libv4lconvert/Makefile.dGPU d6c1aba89bbcb6fef46a6f22b7ea01025435c44d - libv4lconvert/Makefile.am be9e3bf3d7d1086b6eed0c1bf2f574c2b1737c00 - libv4lconvert/tinyjpeg.c f061a4e0e45ca8e0dbab630dd477e19a6c915fda - libv4lconvert/spca501.c 07f8e7c84abfbbe76d49d8bfd1f4eae6ea39a90b - libv4lconvert/jpgl.c 1e08fb01a598d71e3fc69656c4f2291f7dc13105 - libv4lconvert/control/libv4lcontrol.h 70f4992835e964b2698473971904375333e3659b - libv4lconvert/control/libv4lcontrol-priv.h 19a7fd04cdeba61172f281806d030472dee79fcd - libv4lconvert/control/libv4lcontrol.c 0390d660eb130f0e580832bcf8ad5069010d2696 - libv4lconvert/processing/libv4lprocessing.h 7da402829dbff238ca6ac829c037a85476185db6 - libv4lconvert/processing/autogain.c a54c2cb0439e606af01d0b4f02704f411819d98c - libv4lconvert/processing/libv4lprocessing.c dae9c69b7f019d7d4494cd56e2cf757e8510824a - libv4lconvert/processing/whitebalance.c 33ab91b54108e8c24cbb80c5c335d96391d440b2 - libv4lconvert/processing/libv4lprocessing-priv.h ebf12bcf99f35fb9c400b04a1439e68598268249 - libv4lconvert/processing/gamma.c 2835a7389ec7591d4ff4a6d552afe7d947548608 - libv4l2/libv4l2.c b89578e115fc3704f6e4c0eb73eeea844788c10e - libv4l2/Makefile 2c6d79307968536d738adf5a70109eb77aee4faf - libv4l2/log.c 9d456d1772885d900865a8958c0291e13d509de5 - libv4l2/v4l2convert.c cbcee4426c19c168c6f49d04af3a0b2e30c0b681 - libv4l2/libv4l2.pc.in 766aaca553b0166eb736557e44ad42b69464aa53 - libv4l2/libv4l2.export 2542aabb7fbff4b1a09faaadec6006c4410a6d10 - libv4l2/libv4l2-priv.h 4ba98a607592ed0b8327b387af354544c65c9b67 - libv4l2/v4l2-plugin-android.c ffecae84262f548deac1da0fa51f1aba6b6f96a0 - libv4l2/Makefile.dGPU 8e335567bf404eeb3d180dd384309f687f2ab944 - libv4l2/Makefile.am e6516370c43e4869e05a540d2e4ef584ac64890a - libv4l2/v4l2-plugin.c Change-Id: I0711905c50b49c09db7c957b33153180f2fc5429
This commit is contained in:
svcmobrel-release
219
libv4lconvert/helper.c
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219
libv4lconvert/helper.c
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@@ -0,0 +1,219 @@
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/*
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# (C) 2009 Hans de Goede <hdegoede@redhat.com>
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU Lesser General Public License, version 2.1,
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# as published by the Free Software Foundation.
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#
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# This program 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
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# GNU 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 License
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# along with this program; 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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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/wait.h>
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#include "libv4lconvert-priv.h"
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#define READ_END 0
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#define WRITE_END 1
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/* <sigh> Unfortunately I've failed in contact some Authors of decompression
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code of out of tree drivers. So I've no permission to relicense their code
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their code from GPL to LGPL. To work around this, these decompression
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algorithms are put in separate executables and we pipe data through these
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to decompress.
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The "protocol" is very simple:
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From libv4l to the helper the following is send:
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int width
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int height
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int flags
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int data length
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unsigned char[] data (data length long)
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From the helper to libv4l the following is send:
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int data length (-1 in case of a decompression error)
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unsigned char[] data (not present when a decompression error happened)
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*/
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static int v4lconvert_helper_start(struct v4lconvert_data *data,
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const char *helper)
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{
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if (pipe(data->decompress_in_pipe)) {
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V4LCONVERT_ERR("with helper pipe: %s\n", strerror(errno));
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goto error;
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}
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if (pipe(data->decompress_out_pipe)) {
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V4LCONVERT_ERR("with helper pipe: %s\n", strerror(errno));
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goto error_close_in_pipe;
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}
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data->decompress_pid = fork();
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if (data->decompress_pid == -1) {
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V4LCONVERT_ERR("with helper fork: %s\n", strerror(errno));
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goto error_close_out_pipe;
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}
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if (data->decompress_pid == 0) {
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/* We are the child */
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/* Closed unused read / write end of the pipes */
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close(data->decompress_out_pipe[WRITE_END]);
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close(data->decompress_in_pipe[READ_END]);
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/* Connect stdin / out to the pipes */
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if (dup2(data->decompress_out_pipe[READ_END], STDIN_FILENO) == -1) {
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perror("libv4lconvert: error with helper dup2");
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exit(1);
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}
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if (dup2(data->decompress_in_pipe[WRITE_END], STDOUT_FILENO) == -1) {
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perror("libv4lconvert: error with helper dup2");
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exit(1);
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}
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/* And execute the helper */
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execl(helper, helper, NULL);
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/* We should never get here */
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perror("libv4lconvert: error starting helper");
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exit(1);
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} else {
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/* Closed unused read / write end of the pipes */
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close(data->decompress_out_pipe[READ_END]);
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close(data->decompress_in_pipe[WRITE_END]);
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}
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return 0;
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error_close_out_pipe:
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close(data->decompress_out_pipe[READ_END]);
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close(data->decompress_out_pipe[WRITE_END]);
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error_close_in_pipe:
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close(data->decompress_in_pipe[READ_END]);
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close(data->decompress_in_pipe[WRITE_END]);
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error:
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return -1;
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}
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/* IMPROVE ME: we could block SIGPIPE here using pthread_sigmask()
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and then in case of EPIPE consume the signal using
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sigtimedwait (we need to check if a blocked signal wasn't present
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before the write, otherwise we will consume that) and
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after consuming the signal try to restart the helper.
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Note we currently do not do this, as SIGPIPE only happens if the
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decompressor crashes, which in case of an embedded decompressor
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would mean end of program, so by not handling SIGPIPE we treat
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external decompressors identical. */
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static int v4lconvert_helper_write(struct v4lconvert_data *data,
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const void *b, size_t count)
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{
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const unsigned char *buf = b;
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size_t ret, written = 0;
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while (written < count) {
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ret = write(data->decompress_out_pipe[WRITE_END], buf + written,
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count - written);
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if ((int)ret == -1) {
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if (errno == EINTR)
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continue;
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V4LCONVERT_ERR("writing to helper: %s\n", strerror(errno));
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return -1;
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}
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written += ret;
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}
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return 0;
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}
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static int v4lconvert_helper_read(struct v4lconvert_data *data, void *b,
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size_t count)
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{
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unsigned char *buf = b;
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size_t ret, r = 0;
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while (r < count) {
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ret = read(data->decompress_in_pipe[READ_END], buf + r, count - r);
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if ((int)ret == -1) {
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if (errno == EINTR)
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continue;
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V4LCONVERT_ERR("reading from helper: %s\n", strerror(errno));
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return -1;
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}
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if (ret == 0) {
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V4LCONVERT_ERR("reading from helper: unexpected EOF\n");
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return -1;
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}
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r += ret;
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}
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return 0;
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}
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int v4lconvert_helper_decompress(struct v4lconvert_data *data,
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const char *helper, const unsigned char *src, int src_size,
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unsigned char *dest, int dest_size, int width, int height, int flags)
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{
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int r;
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if (data->decompress_pid == -1) {
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if (v4lconvert_helper_start(data, helper))
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return -1;
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}
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if (v4lconvert_helper_write(data, &width, sizeof(int)))
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return -1;
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if (v4lconvert_helper_write(data, &height, sizeof(int)))
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return -1;
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if (v4lconvert_helper_write(data, &flags, sizeof(int)))
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return -1;
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if (v4lconvert_helper_write(data, &src_size, sizeof(int)))
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return -1;
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if (v4lconvert_helper_write(data, src, src_size))
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return -1;
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if (v4lconvert_helper_read(data, &r, sizeof(int)))
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return -1;
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if (r < 0) {
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V4LCONVERT_ERR("decompressing frame data\n");
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return -1;
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}
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if (dest_size < r) {
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V4LCONVERT_ERR("destination buffer to small\n");
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return -1;
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}
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return v4lconvert_helper_read(data, dest, r);
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}
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void v4lconvert_helper_cleanup(struct v4lconvert_data *data)
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{
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int status;
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if (data->decompress_pid != -1) {
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close(data->decompress_out_pipe[WRITE_END]);
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close(data->decompress_in_pipe[READ_END]);
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waitpid(data->decompress_pid, &status, 0);
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data->decompress_pid = -1;
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}
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}
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