lqt_videocodec.c

这个库实现了录象功能

/*******************************************************************************
 lqt_videocodec.c

 libquicktime - A library for reading and writing quicktime/avi/mp4 files.
 http://libquicktime.sourceforge.net

 Copyright (C) 2002 Heroine Virtual Ltd.
 Copyright (C) 2002-2007 Members of the libquicktime project.

 This library is free software; you can redistribute it and/or modify it under
 the terms of the GNU Lesser General Public License as published by the Free
 Software Foundation; either version 2.1 of the License, or (at your option)
 any later version.

 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 library; if not, write to the Free Software Foundation, Inc., 51
 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*******************************************************************************/ 

#include "lqt_private.h"
#include <quicktime/lqt_codecapi.h>
#include "videocodec.h"


static char * fourccs_raw[]  = { QUICKTIME_RAW, "raw3", (char*)0 };

static char * fourccs_v210[] = { QUICKTIME_V210, (char *)0};

static char * fourccs_v308[] = { QUICKTIME_V308, (char*)0 };

static char * fourccs_v408[] = { QUICKTIME_V408, (char*)0 };

static char * fourccs_v410[] = { QUICKTIME_V410, (char*)0 };

static char * fourccs_yuv2[] = { QUICKTIME_YUV2, (char*)0 };

static char * fourccs_2vuy[] = { QUICKTIME_2VUY, (char*)0 };

static char * fourccs_yuv4[] = { QUICKTIME_YUV4, (char*)0 };

static char * fourccs_yv12[] = { QUICKTIME_YUV420, "I420", (char*)0 };

// if DUMMY_PARAMETERS is defined it will cause segfaults
#undef DUMMY_PARAMETERS

#ifdef DUMMY_PARAMETERS

static char * dummy_stringlist_options[] =
  {
    TRS("Option 1"),
    TRS("Option 2"),
    TRS("Option 3"),
    (char*)0
  };

static lqt_parameter_info_static_t dummy_parameters[] =
  {
     {
       .name =               "dummy_string_test",
       .real_name =          TRS("String Test"),
       .type =               LQT_PARAMETER_STRING,
       .val_default =        { (int)"String Test" },
       .val_min =            0,
       .val_max =            0,
     },
     { 
       .name =               "dummy_stringlist_test",
       .real_name =          TRS("Stringlist test"),
       .type =               LQT_PARAMETER_STRINGLIST,
       .val_default =        { (int)"Option1" },
       .val_min =            0,
       .val_max =            0,
       .stringlist_options = dummy_stringlist_options
     },
     { /* End of array */ }
  };

#endif /* DUMMY_PARAMETERS */

static lqt_codec_info_static_t codec_info_raw =
  {
  .name =                "raw",
  .long_name =           TRS("RGB uncompressed"),
  .description =         TRS("RGB uncompressed."),
  .fourccs =             fourccs_raw,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
#ifdef DUMMY_PARAMETERS
  .encoding_parameters = dummy_parameters,
  .decoding_parameters = dummy_parameters,
#else
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
#endif
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

static lqt_codec_info_static_t codec_info_rawalpha =
  {
  .name =                "rawalpha",
  .long_name =           TRS("RGBA uncompressed"),
  .description =         TRS("RGBA uncompressed"),
  .fourccs =             fourccs_raw,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_ENCODE,
#ifdef DUMMY_PARAMETERS
  .encoding_parameters = dummy_parameters,
  .decoding_parameters = dummy_parameters,
#else
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
#endif
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };


static lqt_codec_info_static_t codec_info_v210 =
  {
  .name =                "v210",
  .long_name =           TRS("10 bit packed YUV 4:2:2 (v210)"),
  .description =         TRS("10 bit packed YUV 4:2:2 (v210)"),
  .fourccs =             fourccs_v210,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

static lqt_codec_info_static_t codec_info_v308 =
  {
  .name =                "v308",
  .long_name =           TRS("8 bit planar YUV 4:4:4 (v308)"),
  .description =         TRS("8 bit planar YUV 4:4:4 (v308)"),
  .fourccs =             fourccs_v308,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

static lqt_codec_info_static_t codec_info_v408 =
  {
  .name =                "v408",
  .long_name =           TRS("8 bit Planar YUVA 4:4:4:4 (v408)"),
  .description =         TRS("8 bit Planar YUVA 4:4:4:4 (v408)"),
  .fourccs =             fourccs_v408,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

static lqt_codec_info_static_t codec_info_v410 =
  {
  .name =                "v410",
  .long_name =           TRS("10 bit Packed YUV 4:4:4 (v410)"),
  .description =         TRS("10 bit Packed YUV 4:4:4 (v410)"),
  .fourccs =             fourccs_v410,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

static lqt_codec_info_static_t codec_info_yuv2 =
  {
  .name =                "yuv2",
  .long_name =           TRS("8 bit Packed YUV 4:2:2 (yuv2)"),
  .description =         TRS("8 bit Packed YUV 4:2:2 (yuv2)"),
  .fourccs =             fourccs_yuv2,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

static lqt_codec_info_static_t codec_info_2vuy =
  {
  .name =                "2vuy",
  .long_name =           TRS("8 bit Packed YUV 4:2:2 (2vuy)"),
  .description =         TRS("8 bit Packed YUV 4:2:2 (2vuy)"),
  .fourccs =             fourccs_2vuy,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

static lqt_codec_info_static_t codec_info_yuv4 =
  {
  .name =                "yuv4",
  .long_name =           TRS("YUV 4:2:0 (yuv4)"), 
  .description =         TRS("YUV 4:2:0 (yuv4) NOT COMPATIBLE WITH STANDARD \
QUICKTIME"),
  .fourccs =             fourccs_yuv4,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

static lqt_codec_info_static_t codec_info_yv12 =
  {
  .name =                "yv12",
  .long_name =           TRS("8 bit Planar YUV 4:2:0 (yv12)"),
  .description =         TRS("8 bit Planar YUV 4:2:0 (yv12)"),
  .fourccs =             fourccs_yv12,
  .type =                LQT_CODEC_VIDEO,
  .direction =           LQT_DIRECTION_BOTH,
  .encoding_parameters = (lqt_parameter_info_static_t*)0,
  .decoding_parameters = (lqt_parameter_info_static_t*)0,
  .compatibility_flags = LQT_FILE_QT_OLD | LQT_FILE_QT,
  };

/* These are called from the plugin loader */

LQT_EXTERN int get_num_codecs() { return 10; }

LQT_EXTERN lqt_codec_info_static_t * get_codec_info(int index)
  {
  switch(index)
    {
    case 0: /* raw */
      return &codec_info_raw;
    case 1: /* raw (with alpha) */
      return &codec_info_rawalpha;
    case 2: /* v308 */
      return &codec_info_v308;
    case 3: /* v408 */
      return &codec_info_v408;
    case 4: /* v410 */
      return &codec_info_v410;
    case 5: /* yuv2 */
      return &codec_info_yuv2;
    case 6: /* yuv4 */
      return &codec_info_yuv4;
    case 7: /* vy12 */
      return &codec_info_yv12;
    case 8: /* 2vuy */
      return &codec_info_2vuy;
    case 9: /* v210 */
      return &codec_info_v210;
    }
  return (lqt_codec_info_static_t*)0;
  }

LQT_EXTERN lqt_init_video_codec_func_t get_video_codec(int index)
  {
  switch(index)
    {
    case 0: /* raw */
      return quicktime_init_codec_raw;
    case 1: /* raw (with alpha) */
      return quicktime_init_codec_rawalpha;
    case 2: /* v308 */
      return quicktime_init_codec_v308;
    case 3: /* v408 */
      return quicktime_init_codec_v408;
    case 4: /* v410 */
      return quicktime_init_codec_v410;
    case 5: /* yuv2 */
      return quicktime_init_codec_yuv2;
    case 6: /* yuv4 */
      return quicktime_init_codec_yuv4;
    case 7: /* vy12 */
      return quicktime_init_codec_yv12;
    case 8: /* 2vuy */
      return quicktime_init_codec_2vuy;
    case 9: /* v210 */
      return quicktime_init_codec_v210;
    }
  return (lqt_init_video_codec_func_t)0;
  }