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FFmpeg/libavformat/riff.c

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  1. /*

  2.  * RIFF common functions and data

  3.  * Copyright (c) 2000 Fabrice Bellard

  4.  *

  5.  * This file is part of Libav.

  6.  *

  7.  * Libav is free software; you can redistribute it and/or

  8.  * modify it under the terms of the GNU Lesser General Public

  9.  * License as published by the Free Software Foundation; either

  10.  * version 2.1 of the License, or (at your option) any later version.

  11.  *

  12.  * Libav is distributed in the hope that it will be useful,

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  15.  * Lesser General Public License for more details.

  16.  *

  17.  * You should have received a copy of the GNU Lesser General Public

  18.  * License along with Libav; if not, write to the Free Software

  19.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  20.  */

  21. 

  22. #include "libavutil/error.h"

  23. #include "libavutil/log.h"

  24. #include "libavcodec/avcodec.h"

  25. #include "avformat.h"

  26. #include "avio_internal.h"

  27. #include "riff.h"

  28. #include "libavcodec/bytestream.h"

  29. 

  30. /* Note: When encoding, the first matching tag is used, so order is

  31.  * important if multiple tags are possible for a given codec. */

  32. const AVCodecTag ff_codec_bmp_tags[] = {

  33.     { AV_CODEC_ID_H264,         MKTAG('H', '2', '6', '4') },

  34.     { AV_CODEC_ID_H264,         MKTAG('h', '2', '6', '4') },

  35.     { AV_CODEC_ID_H264,         MKTAG('X', '2', '6', '4') },

  36.     { AV_CODEC_ID_H264,         MKTAG('x', '2', '6', '4') },

  37.     { AV_CODEC_ID_H264,         MKTAG('a', 'v', 'c', '1') },

  38.     { AV_CODEC_ID_H264,         MKTAG('D', 'A', 'V', 'C') },

  39.     { AV_CODEC_ID_H264,         MKTAG('V', 'S', 'S', 'H') },

  40.     { AV_CODEC_ID_H263,         MKTAG('H', '2', '6', '3') },

  41.     { AV_CODEC_ID_H263,         MKTAG('X', '2', '6', '3') },

  42.     { AV_CODEC_ID_H263,         MKTAG('T', '2', '6', '3') },

  43.     { AV_CODEC_ID_H263,         MKTAG('L', '2', '6', '3') },

  44.     { AV_CODEC_ID_H263,         MKTAG('V', 'X', '1', 'K') },

  45.     { AV_CODEC_ID_H263,         MKTAG('Z', 'y', 'G', 'o') },

  46.     { AV_CODEC_ID_H263,         MKTAG('M', '2', '6', '3') },

  47.     { AV_CODEC_ID_H263P,        MKTAG('H', '2', '6', '3') },

  48.     { AV_CODEC_ID_H263I,        MKTAG('I', '2', '6', '3') }, /* Intel H.263 */

  49.     { AV_CODEC_ID_H261,         MKTAG('H', '2', '6', '1') },

  50.     { AV_CODEC_ID_H263P,        MKTAG('U', '2', '6', '3') },

  51.     { AV_CODEC_ID_H263P,        MKTAG('v', 'i', 'v', '1') },

  52.     { AV_CODEC_ID_MPEG4,        MKTAG('F', 'M', 'P', '4') },

  53.     { AV_CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', 'X') },

  54.     { AV_CODEC_ID_MPEG4,        MKTAG('D', 'X', '5', '0') },

  55.     { AV_CODEC_ID_MPEG4,        MKTAG('X', 'V', 'I', 'D') },

  56.     { AV_CODEC_ID_MPEG4,        MKTAG('M', 'P', '4', 'S') },

  57.     { AV_CODEC_ID_MPEG4,        MKTAG('M', '4', 'S', '2') },

  58.     /* some broken AVIs use this */

  59.     { AV_CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  0 ) },

  60.     /* some broken AVIs use this */

  61.     { AV_CODEC_ID_MPEG4,        MKTAG('Z', 'M', 'P', '4') },

  62.     { AV_CODEC_ID_MPEG4,        MKTAG('D', 'I', 'V', '1') },

  63.     { AV_CODEC_ID_MPEG4,        MKTAG('B', 'L', 'Z', '0') },

  64.     { AV_CODEC_ID_MPEG4,        MKTAG('m', 'p', '4', 'v') },

  65.     { AV_CODEC_ID_MPEG4,        MKTAG('U', 'M', 'P', '4') },

  66.     { AV_CODEC_ID_MPEG4,        MKTAG('W', 'V', '1', 'F') },

  67.     { AV_CODEC_ID_MPEG4,        MKTAG('S', 'E', 'D', 'G') },

  68.     { AV_CODEC_ID_MPEG4,        MKTAG('R', 'M', 'P', '4') },

  69.     { AV_CODEC_ID_MPEG4,        MKTAG('3', 'I', 'V', '2') },

  70.     /* WaWv MPEG-4 Video Codec */

  71.     { AV_CODEC_ID_MPEG4,        MKTAG('W', 'A', 'W', 'V') },

  72.     { AV_CODEC_ID_MPEG4,        MKTAG('F', 'F', 'D', 'S') },

  73.     { AV_CODEC_ID_MPEG4,        MKTAG('F', 'V', 'F', 'W') },

  74.     { AV_CODEC_ID_MPEG4,        MKTAG('D', 'C', 'O', 'D') },

  75.     { AV_CODEC_ID_MPEG4,        MKTAG('M', 'V', 'X', 'M') },

  76.     { AV_CODEC_ID_MPEG4,        MKTAG('P', 'M', '4', 'V') },

  77.     { AV_CODEC_ID_MPEG4,        MKTAG('S', 'M', 'P', '4') },

  78.     { AV_CODEC_ID_MPEG4,        MKTAG('D', 'X', 'G', 'M') },

  79.     { AV_CODEC_ID_MPEG4,        MKTAG('V', 'I', 'D', 'M') },

  80.     { AV_CODEC_ID_MPEG4,        MKTAG('M', '4', 'T', '3') },

  81.     { AV_CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'X') },

  82.     /* flipped video */

  83.     { AV_CODEC_ID_MPEG4,        MKTAG('H', 'D', 'X', '4') },

  84.     { AV_CODEC_ID_MPEG4,        MKTAG('D', 'M', 'K', '2') },

  85.     { AV_CODEC_ID_MPEG4,        MKTAG('D', 'I', 'G', 'I') },

  86.     { AV_CODEC_ID_MPEG4,        MKTAG('I', 'N', 'M', 'C') },

  87.     /* Ephv MPEG-4 */

  88.     { AV_CODEC_ID_MPEG4,        MKTAG('E', 'P', 'H', 'V') },

  89.     { AV_CODEC_ID_MPEG4,        MKTAG('E', 'M', '4', 'A') },

  90.     /* Divio MPEG-4 */

  91.     { AV_CODEC_ID_MPEG4,        MKTAG('M', '4', 'C', 'C') },

  92.     { AV_CODEC_ID_MPEG4,        MKTAG('S', 'N', '4', '0') },

  93.     { AV_CODEC_ID_MPEG4,        MKTAG('V', 'S', 'P', 'X') },

  94.     { AV_CODEC_ID_MPEG4,        MKTAG('U', 'L', 'D', 'X') },

  95.     { AV_CODEC_ID_MPEG4,        MKTAG('G', 'E', 'O', 'V') },

  96.     /* Samsung SHR-6040 */

  97.     { AV_CODEC_ID_MPEG4,        MKTAG('S', 'I', 'P', 'P') },

  98.     { AV_CODEC_ID_MPEG4,        MKTAG('X', 'V', 'I', 'X') },

  99.     { AV_CODEC_ID_MPEG4,        MKTAG('D', 'r', 'e', 'X') },

  100.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', '4', '3') },

  101.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '3') },

  102.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('M', 'P', 'G', '3') },

  103.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '5') },

  104.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '6') },

  105.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('D', 'I', 'V', '4') },

  106.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('D', 'V', 'X', '3') },

  107.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('A', 'P', '4', '1') },

  108.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '1') },

  109.     { AV_CODEC_ID_MSMPEG4V3,    MKTAG('C', 'O', 'L', '0') },

  110.     { AV_CODEC_ID_MSMPEG4V2,    MKTAG('M', 'P', '4', '2') },

  111.     { AV_CODEC_ID_MSMPEG4V2,    MKTAG('D', 'I', 'V', '2') },

  112.     { AV_CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', 'G', '4') },

  113.     { AV_CODEC_ID_MSMPEG4V1,    MKTAG('M', 'P', '4', '1') },

  114.     { AV_CODEC_ID_WMV1,         MKTAG('W', 'M', 'V', '1') },

  115.     { AV_CODEC_ID_WMV2,         MKTAG('W', 'M', 'V', '2') },

  116.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'd') },

  117.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', 'd') },

  118.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', '1') },

  119.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 's', 'l') },

  120.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '2', '5') },

  121.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', '5', '0') },

  122.     /* Canopus DV */

  123.     { AV_CODEC_ID_DVVIDEO,      MKTAG('c', 'd', 'v', 'c') },

  124.     /* Canopus DV */

  125.     { AV_CODEC_ID_DVVIDEO,      MKTAG('C', 'D', 'V', 'H') },

  126.     /* Canopus DV */

  127.     { AV_CODEC_ID_DVVIDEO,      MKTAG('C', 'D', 'V', '5') },

  128.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', ' ') },

  129.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'c', 's') },

  130.     { AV_CODEC_ID_DVVIDEO,      MKTAG('d', 'v', 'h', '1') },

  131.     { AV_CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '1') },

  132.     { AV_CODEC_ID_MPEG1VIDEO,   MKTAG('m', 'p', 'g', '2') },

  133.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('m', 'p', 'g', '2') },

  134.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'P', 'E', 'G') },

  135.     { AV_CODEC_ID_MPEG1VIDEO,   MKTAG('P', 'I', 'M', '1') },

  136.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('P', 'I', 'M', '2') },

  137.     { AV_CODEC_ID_MPEG1VIDEO,   MKTAG('V', 'C', 'R', '2') },

  138.     { AV_CODEC_ID_MPEG1VIDEO,   MKTAG( 1 ,  0 ,  0 ,  16) },

  139.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG( 2 ,  0 ,  0 ,  16) },

  140.     { AV_CODEC_ID_MPEG4,        MKTAG( 4 ,  0 ,  0 ,  16) },

  141.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('D', 'V', 'R', ' ') },

  142.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('M', 'M', 'E', 'S') },

  143.     /* Lead MPEG-2 in AVI */

  144.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('L', 'M', 'P', '2') },

  145.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('s', 'l', 'i', 'f') },

  146.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('E', 'M', '2', 'V') },

  147.     /* Matrox MPEG-2 intra-only */

  148.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('M', '7', '0', '1') },

  149.     { AV_CODEC_ID_MPEG2VIDEO,   MKTAG('m', 'p', 'g', 'v') },

  150.     { AV_CODEC_ID_MJPEG,        MKTAG('M', 'J', 'P', 'G') },

  151.     { AV_CODEC_ID_MJPEG,        MKTAG('L', 'J', 'P', 'G') },

  152.     { AV_CODEC_ID_MJPEG,        MKTAG('d', 'm', 'b', '1') },

  153.     { AV_CODEC_ID_MJPEG,        MKTAG('m', 'j', 'p', 'a') },

  154.     { AV_CODEC_ID_LJPEG,        MKTAG('L', 'J', 'P', 'G') },

  155.     /* Pegasus lossless JPEG */

  156.     { AV_CODEC_ID_MJPEG,        MKTAG('J', 'P', 'G', 'L') },

  157.     /* JPEG-LS custom FOURCC for AVI - encoder */

  158.     { AV_CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'L', 'S') },

  159.     { AV_CODEC_ID_JPEGLS,       MKTAG('M', 'J', 'P', 'G') },

  160.     /* JPEG-LS custom FOURCC for AVI - decoder */

  161.     { AV_CODEC_ID_MJPEG,        MKTAG('M', 'J', 'L', 'S') },

  162.     { AV_CODEC_ID_MJPEG,        MKTAG('j', 'p', 'e', 'g') },

  163.     { AV_CODEC_ID_MJPEG,        MKTAG('I', 'J', 'P', 'G') },

  164.     { AV_CODEC_ID_MJPEG,        MKTAG('A', 'V', 'R', 'n') },

  165.     { AV_CODEC_ID_MJPEG,        MKTAG('A', 'C', 'D', 'V') },

  166.     { AV_CODEC_ID_MJPEG,        MKTAG('Q', 'I', 'V', 'G') },

  167.     /* SL M-JPEG */

  168.     { AV_CODEC_ID_MJPEG,        MKTAG('S', 'L', 'M', 'J') },

  169.     /* Creative Webcam JPEG */

  170.     { AV_CODEC_ID_MJPEG,        MKTAG('C', 'J', 'P', 'G') },

  171.     /* Intel JPEG Library Video Codec */

  172.     { AV_CODEC_ID_MJPEG,        MKTAG('I', 'J', 'L', 'V') },

  173.     /* Midvid JPEG Video Codec */

  174.     { AV_CODEC_ID_MJPEG,        MKTAG('M', 'V', 'J', 'P') },

  175.     { AV_CODEC_ID_MJPEG,        MKTAG('A', 'V', 'I', '1') },

  176.     { AV_CODEC_ID_MJPEG,        MKTAG('A', 'V', 'I', '2') },

  177.     { AV_CODEC_ID_MJPEG,        MKTAG('M', 'T', 'S', 'J') },

  178.     /* Paradigm Matrix M-JPEG Codec */

  179.     { AV_CODEC_ID_MJPEG,        MKTAG('Z', 'J', 'P', 'G') },

  180.     { AV_CODEC_ID_MJPEG,        MKTAG('M', 'M', 'J', 'P') },

  181.     { AV_CODEC_ID_HUFFYUV,      MKTAG('H', 'F', 'Y', 'U') },

  182.     { AV_CODEC_ID_FFVHUFF,      MKTAG('F', 'F', 'V', 'H') },

  183.     { AV_CODEC_ID_CYUV,         MKTAG('C', 'Y', 'U', 'V') },

  184.     { AV_CODEC_ID_RAWVIDEO,     MKTAG( 0 ,  0 ,  0 ,  0 ) },

  185.     { AV_CODEC_ID_RAWVIDEO,     MKTAG( 3 ,  0 ,  0 ,  0 ) },

  186.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('I', '4', '2', '0') },

  187.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'Y', '2') },

  188.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', '2') },

  189.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('V', '4', '2', '2') },

  190.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'N', 'V') },

  191.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'N', 'V') },

  192.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'N', 'Y') },

  193.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('u', 'y', 'v', '1') },

  194.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('2', 'V', 'u', '1') },

  195.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('2', 'v', 'u', 'y') },

  196.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('y', 'u', 'v', 's') },

  197.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('y', 'u', 'v', '2') },

  198.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('P', '4', '2', '2') },

  199.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '1', '2') },

  200.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '1', '6') },

  201.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', '2', '4') },

  202.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('U', 'Y', 'V', 'Y') },

  203.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('V', 'Y', 'U', 'Y') },

  204.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('I', 'Y', 'U', 'V') },

  205.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', '8', '0', '0') },

  206.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', '8', ' ', ' ') },

  207.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('H', 'D', 'Y', 'C') },

  208.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', 'U', '9') },

  209.     /* SoftLab-NSK VideoTizer */

  210.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('V', 'D', 'T', 'Z') },

  211.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '1', '1') },

  212.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('N', 'V', '1', '2') },

  213.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('N', 'V', '2', '1') },

  214.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '1', 'B') },

  215.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', '4', '2', 'B') },

  216.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', 'U', 'V', '9') },

  217.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('Y', 'V', 'U', '9') },

  218.     { AV_CODEC_ID_RAWVIDEO,     MKTAG('a', 'u', 'v', '2') },

  219.     { AV_CODEC_ID_FRWU,         MKTAG('F', 'R', 'W', 'U') },

  220.     { AV_CODEC_ID_R10K,         MKTAG('R', '1', '0', 'k') },

  221.     { AV_CODEC_ID_R210,         MKTAG('r', '2', '1', '0') },

  222.     { AV_CODEC_ID_V210,         MKTAG('v', '2', '1', '0') },

  223.     { AV_CODEC_ID_V410,         MKTAG('v', '4', '1', '0') },

  224.     { AV_CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '1') },

  225.     { AV_CODEC_ID_INDEO3,       MKTAG('I', 'V', '3', '2') },

  226.     { AV_CODEC_ID_INDEO4,       MKTAG('I', 'V', '4', '1') },

  227.     { AV_CODEC_ID_INDEO5,       MKTAG('I', 'V', '5', '0') },

  228.     { AV_CODEC_ID_VP3,          MKTAG('V', 'P', '3', '1') },

  229.     { AV_CODEC_ID_VP3,          MKTAG('V', 'P', '3', '0') },

  230.     { AV_CODEC_ID_VP5,          MKTAG('V', 'P', '5', '0') },

  231.     { AV_CODEC_ID_VP6,          MKTAG('V', 'P', '6', '0') },

  232.     { AV_CODEC_ID_VP6,          MKTAG('V', 'P', '6', '1') },

  233.     { AV_CODEC_ID_VP6,          MKTAG('V', 'P', '6', '2') },

  234.     { AV_CODEC_ID_VP6F,         MKTAG('V', 'P', '6', 'F') },

  235.     { AV_CODEC_ID_VP6F,         MKTAG('F', 'L', 'V', '4') },

  236.     { AV_CODEC_ID_VP8,          MKTAG('V', 'P', '8', '0') },

  237.     { AV_CODEC_ID_ASV1,         MKTAG('A', 'S', 'V', '1') },

  238.     { AV_CODEC_ID_ASV2,         MKTAG('A', 'S', 'V', '2') },

  239.     { AV_CODEC_ID_VCR1,         MKTAG('V', 'C', 'R', '1') },

  240.     { AV_CODEC_ID_FFV1,         MKTAG('F', 'F', 'V', '1') },

  241.     { AV_CODEC_ID_XAN_WC4,      MKTAG('X', 'x', 'a', 'n') },

  242.     { AV_CODEC_ID_MIMIC,        MKTAG('L', 'M', '2', '0') },

  243.     { AV_CODEC_ID_MSRLE,        MKTAG('m', 'r', 'l', 'e') },

  244.     { AV_CODEC_ID_MSRLE,        MKTAG( 1 ,  0 ,  0 ,  0 ) },

  245.     { AV_CODEC_ID_MSRLE,        MKTAG( 2 ,  0 ,  0 ,  0 ) },

  246.     { AV_CODEC_ID_MSVIDEO1,     MKTAG('M', 'S', 'V', 'C') },

  247.     { AV_CODEC_ID_MSVIDEO1,     MKTAG('m', 's', 'v', 'c') },

  248.     { AV_CODEC_ID_MSVIDEO1,     MKTAG('C', 'R', 'A', 'M') },

  249.     { AV_CODEC_ID_MSVIDEO1,     MKTAG('c', 'r', 'a', 'm') },

  250.     { AV_CODEC_ID_MSVIDEO1,     MKTAG('W', 'H', 'A', 'M') },

  251.     { AV_CODEC_ID_MSVIDEO1,     MKTAG('w', 'h', 'a', 'm') },

  252.     { AV_CODEC_ID_CINEPAK,      MKTAG('c', 'v', 'i', 'd') },

  253.     { AV_CODEC_ID_TRUEMOTION1,  MKTAG('D', 'U', 'C', 'K') },

  254.     { AV_CODEC_ID_TRUEMOTION1,  MKTAG('P', 'V', 'E', 'Z') },

  255.     { AV_CODEC_ID_MSZH,         MKTAG('M', 'S', 'Z', 'H') },

  256.     { AV_CODEC_ID_ZLIB,         MKTAG('Z', 'L', 'I', 'B') },

  257.     { AV_CODEC_ID_4XM,          MKTAG('4', 'X', 'M', 'V') },

  258.     { AV_CODEC_ID_FLV1,         MKTAG('F', 'L', 'V', '1') },

  259.     { AV_CODEC_ID_FLASHSV,      MKTAG('F', 'S', 'V', '1') },

  260.     { AV_CODEC_ID_SVQ1,         MKTAG('s', 'v', 'q', '1') },

  261.     { AV_CODEC_ID_TSCC,         MKTAG('t', 's', 'c', 'c') },

  262.     { AV_CODEC_ID_ULTI,         MKTAG('U', 'L', 'T', 'I') },

  263.     { AV_CODEC_ID_VIXL,         MKTAG('V', 'I', 'X', 'L') },

  264.     { AV_CODEC_ID_QPEG,         MKTAG('Q', 'P', 'E', 'G') },

  265.     { AV_CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '0') },

  266.     { AV_CODEC_ID_QPEG,         MKTAG('Q', '1', '.', '1') },

  267.     { AV_CODEC_ID_WMV3,         MKTAG('W', 'M', 'V', '3') },

  268.     { AV_CODEC_ID_WMV3IMAGE,    MKTAG('W', 'M', 'V', 'P') },

  269.     { AV_CODEC_ID_VC1,          MKTAG('W', 'V', 'C', '1') },

  270.     { AV_CODEC_ID_VC1,          MKTAG('W', 'M', 'V', 'A') },

  271.     { AV_CODEC_ID_VC1IMAGE,     MKTAG('W', 'V', 'P', '2') },

  272.     { AV_CODEC_ID_LOCO,         MKTAG('L', 'O', 'C', 'O') },

  273.     { AV_CODEC_ID_WNV1,         MKTAG('W', 'N', 'V', '1') },

  274.     { AV_CODEC_ID_AASC,         MKTAG('A', 'A', 'S', 'C') },

  275.     { AV_CODEC_ID_INDEO2,       MKTAG('R', 'T', '2', '1') },

  276.     { AV_CODEC_ID_FRAPS,        MKTAG('F', 'P', 'S', '1') },

  277.     { AV_CODEC_ID_THEORA,       MKTAG('t', 'h', 'e', 'o') },

  278.     { AV_CODEC_ID_TRUEMOTION2,  MKTAG('T', 'M', '2', '0') },

  279.     { AV_CODEC_ID_CSCD,         MKTAG('C', 'S', 'C', 'D') },

  280.     { AV_CODEC_ID_ZMBV,         MKTAG('Z', 'M', 'B', 'V') },

  281.     { AV_CODEC_ID_KMVC,         MKTAG('K', 'M', 'V', 'C') },

  282.     { AV_CODEC_ID_CAVS,         MKTAG('C', 'A', 'V', 'S') },

  283.     { AV_CODEC_ID_JPEG2000,     MKTAG('m', 'j', 'p', '2') },

  284.     { AV_CODEC_ID_JPEG2000,     MKTAG('M', 'J', '2', 'C') },

  285.     { AV_CODEC_ID_JPEG2000,     MKTAG('L', 'J', '2', 'C') },

  286.     { AV_CODEC_ID_JPEG2000,     MKTAG('L', 'J', '2', 'K') },

  287.     { AV_CODEC_ID_VMNC,         MKTAG('V', 'M', 'n', 'c') },

  288.     { AV_CODEC_ID_TARGA,        MKTAG('t', 'g', 'a', ' ') },

  289.     { AV_CODEC_ID_PNG,          MKTAG('M', 'P', 'N', 'G') },

  290.     { AV_CODEC_ID_PNG,          MKTAG('P', 'N', 'G', '1') },

  291.     { AV_CODEC_ID_CLJR,         MKTAG('C', 'L', 'J', 'R') },

  292.     { AV_CODEC_ID_DIRAC,        MKTAG('d', 'r', 'a', 'c') },

  293.     { AV_CODEC_ID_RPZA,         MKTAG('a', 'z', 'p', 'r') },

  294.     { AV_CODEC_ID_RPZA,         MKTAG('R', 'P', 'Z', 'A') },

  295.     { AV_CODEC_ID_RPZA,         MKTAG('r', 'p', 'z', 'a') },

  296.     { AV_CODEC_ID_SP5X,         MKTAG('S', 'P', '5', '4') },

  297.     { AV_CODEC_ID_AURA,         MKTAG('A', 'U', 'R', 'A') },

  298.     { AV_CODEC_ID_AURA2,        MKTAG('A', 'U', 'R', '2') },

  299.     { AV_CODEC_ID_DPX,          MKTAG('d', 'p', 'x', ' ') },

  300.     { AV_CODEC_ID_KGV1,         MKTAG('K', 'G', 'V', '1') },

  301.     { AV_CODEC_ID_LAGARITH,     MKTAG('L', 'A', 'G', 'S') },

  302.     { AV_CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'R', 'A') },

  303.     { AV_CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'R', 'G') },

  304.     { AV_CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'Y', '0') },

  305.     { AV_CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'Y', '2') },

  306.     { AV_CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'H', '0') },

  307.     { AV_CODEC_ID_UTVIDEO,      MKTAG('U', 'L', 'H', '2') },

  308.     { AV_CODEC_ID_VBLE,         MKTAG('V', 'B', 'L', 'E') },

  309.     { AV_CODEC_ID_DXTORY,       MKTAG('x', 't', 'o', 'r') },

  310.     { AV_CODEC_ID_ZEROCODEC,    MKTAG('Z', 'E', 'C', 'O') },

  311.     { AV_CODEC_ID_MSS1,         MKTAG('M', 'S', 'S', '1') },

  312.     { AV_CODEC_ID_MSA1,         MKTAG('M', 'S', 'A', '1') },

  313.     { AV_CODEC_ID_TSCC2,        MKTAG('T', 'S', 'C', '2') },

  314.     { AV_CODEC_ID_MTS2,         MKTAG('M', 'T', 'S', '2') },

  315.     { AV_CODEC_ID_CLLC,         MKTAG('C', 'L', 'L', 'C') },

  316.     { AV_CODEC_ID_MSS2,         MKTAG('M', 'S', 'S', '2') },

  317.     { AV_CODEC_ID_SVQ3,         MKTAG('S', 'V', 'Q', '3') },

  318.     { AV_CODEC_ID_G2M,          MKTAG('G', '2', 'M', '2') },

  319.     { AV_CODEC_ID_G2M,          MKTAG('G', '2', 'M', '3') },

  320.     { AV_CODEC_ID_G2M,          MKTAG('G', '2', 'M', '4') },

  321.     { AV_CODEC_ID_NONE,         0 }

  322. };

  323. 

  324. const AVCodecTag ff_codec_wav_tags[] = {

  325.     { AV_CODEC_ID_PCM_S16LE,       0x0001 },

  326.     /* must come after s16le in this list */

  327.     { AV_CODEC_ID_PCM_U8,          0x0001 },

  328.     { AV_CODEC_ID_PCM_S24LE,       0x0001 },

  329.     { AV_CODEC_ID_PCM_S32LE,       0x0001 },

  330.     { AV_CODEC_ID_ADPCM_MS,        0x0002 },

  331.     { AV_CODEC_ID_PCM_F32LE,       0x0003 },

  332.     /* must come after f32le in this list */

  333.     { AV_CODEC_ID_PCM_F64LE,       0x0003 },

  334.     { AV_CODEC_ID_PCM_ALAW,        0x0006 },

  335.     { AV_CODEC_ID_PCM_MULAW,       0x0007 },

  336.     { AV_CODEC_ID_WMAVOICE,        0x000A },

  337.     { AV_CODEC_ID_ADPCM_IMA_WAV,   0x0011 },

  338.     /* must come after adpcm_ima_wav in this list */

  339.     { AV_CODEC_ID_PCM_ZORK,        0x0011 },

  340.     { AV_CODEC_ID_ADPCM_YAMAHA,    0x0020 },

  341.     { AV_CODEC_ID_TRUESPEECH,      0x0022 },

  342.     { AV_CODEC_ID_GSM_MS,          0x0031 },

  343.     { AV_CODEC_ID_ADPCM_G726,      0x0045 },

  344.     { AV_CODEC_ID_MP2,             0x0050 },

  345.     { AV_CODEC_ID_MP3,             0x0055 },

  346.     { AV_CODEC_ID_AMR_NB,          0x0057 },

  347.     { AV_CODEC_ID_AMR_WB,          0x0058 },

  348.     /* rogue format number */

  349.     { AV_CODEC_ID_ADPCM_IMA_DK4,   0x0061 },

  350.     /* rogue format number */

  351.     { AV_CODEC_ID_ADPCM_IMA_DK3,   0x0062 },

  352.     { AV_CODEC_ID_ADPCM_IMA_WAV,   0x0069 },

  353.     { AV_CODEC_ID_VOXWARE,         0x0075 },

  354.     { AV_CODEC_ID_AAC,             0x00ff },

  355.     { AV_CODEC_ID_SIPR,            0x0130 },

  356.     { AV_CODEC_ID_WMAV1,           0x0160 },

  357.     { AV_CODEC_ID_WMAV2,           0x0161 },

  358.     { AV_CODEC_ID_WMAPRO,          0x0162 },

  359.     { AV_CODEC_ID_WMALOSSLESS,     0x0163 },

  360.     { AV_CODEC_ID_ADPCM_CT,        0x0200 },

  361.     { AV_CODEC_ID_ATRAC3,          0x0270 },

  362.     { AV_CODEC_ID_ADPCM_G722,      0x028F },

  363.     { AV_CODEC_ID_IMC,             0x0401 },

  364.     { AV_CODEC_ID_IAC,             0x0402 },

  365.     { AV_CODEC_ID_GSM_MS,          0x1500 },

  366.     { AV_CODEC_ID_TRUESPEECH,      0x1501 },

  367.     /* ADTS AAC */

  368.     { AV_CODEC_ID_AAC,             0x1600 },

  369.     { AV_CODEC_ID_AAC_LATM,        0x1602 },

  370.     { AV_CODEC_ID_AC3,             0x2000 },

  371.     { AV_CODEC_ID_DTS,             0x2001 },

  372.     { AV_CODEC_ID_PCM_MULAW,       0x6c75 },

  373.     { AV_CODEC_ID_AAC,             0x706d },

  374.     { AV_CODEC_ID_AAC,             0x4143 },

  375.     { AV_CODEC_ID_SPEEX,           0xA109 },

  376.     { AV_CODEC_ID_FLAC,            0xF1AC },

  377.     { AV_CODEC_ID_ADPCM_SWF,       ('S' << 8) + 'F' },

  378.     /* HACK/FIXME: Does Vorbis in WAV/AVI have an (in)official ID? */

  379.     { AV_CODEC_ID_VORBIS,          ('V' << 8) + 'o' },

  380.     { AV_CODEC_ID_NONE,      0 },

  381. };

  382. 

  383. const AVCodecGuid ff_codec_wav_guids[] = {

  384.     { AV_CODEC_ID_AC3,      { 0x2C, 0x80, 0x6D, 0xE0, 0x46, 0xDB, 0xCF, 0x11, 0xB4, 0xD1, 0x00, 0x80, 0x5F, 0x6C, 0xBB, 0xEA } },

  385.     { AV_CODEC_ID_ATRAC3P,  { 0xBF, 0xAA, 0x23, 0xE9, 0x58, 0xCB, 0x71, 0x44, 0xA1, 0x19, 0xFF, 0xFA, 0x01, 0xE4, 0xCE, 0x62 } },

  386.     { AV_CODEC_ID_EAC3,     { 0xAF, 0x87, 0xFB, 0xA7, 0x02, 0x2D, 0xFB, 0x42, 0xA4, 0xD4, 0x05, 0xCD, 0x93, 0x84, 0x3B, 0xDD } },

  387.     { AV_CODEC_ID_MP2,      { 0x2B, 0x80, 0x6D, 0xE0, 0x46, 0xDB, 0xCF, 0x11, 0xB4, 0xD1, 0x00, 0x80, 0x5F, 0x6C, 0xBB, 0xEA } },

  388.     { AV_CODEC_ID_NONE }

  389. };

  390. 

  391. const AVMetadataConv ff_riff_info_conv[] = {

  392.     { "IART", "artist"     },

  393.     { "ICMT", "comment"    },

  394.     { "ICOP", "copyright"  },

  395.     { "ICRD", "date"       },

  396.     { "IGNR", "genre"      },

  397.     { "ILNG", "language"   },

  398.     { "INAM", "title"      },

  399.     { "IPRD", "album"      },

  400.     { "IPRT", "track"      },

  401.     { "ISFT", "encoder"    },

  402.     { "ITCH", "encoded_by" },

  403.     { 0 },

  404. };

  405. 

  406. enum AVCodecID ff_codec_guid_get_id(const AVCodecGuid *guids, ff_asf_guid guid)

  407. {

  408.     int i;

  409.     for (i = 0; guids[i].id != AV_CODEC_ID_NONE; i++)

  410.         if (!ff_guidcmp(guids[i].guid, guid))

  411.             return guids[i].id;

  412.     return AV_CODEC_ID_NONE;

  413. }

  414. 

  415. const struct AVCodecTag *avformat_get_riff_video_tags(void)

  416. {

  417.     return ff_codec_bmp_tags;

  418. }

  419. 

  420. const struct AVCodecTag *avformat_get_riff_audio_tags(void)

  421. {

  422.     return ff_codec_wav_tags;

  423. }

  424. 

  425. #if CONFIG_DEMUXERS

  426. /* We could be given one of the three possible structures here:

  427.  * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure

  428.  * is an expansion of the previous one with the fields added

  429.  * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and

  430.  * WAVEFORMATEX adds 'WORD  cbSize' and basically makes itself

  431.  * an openended structure.

  432.  */

  433. 

  434. static void parse_waveformatex(AVIOContext *pb, AVCodecContext *c)

  435. {

  436.     ff_asf_guid subformat;

  437.     c->bits_per_coded_sample = avio_rl16(pb);

  438.     c->channel_layout        = avio_rl32(pb); /* dwChannelMask */

  439. 

  440.     ff_get_guid(pb, &subformat);

  441.     if (!memcmp(subformat + 4,

  442.                 (const uint8_t[]){ FF_MEDIASUBTYPE_BASE_GUID }, 12)) {

  443.         c->codec_tag = AV_RL32(subformat);

  444.         c->codec_id  = ff_wav_codec_get_id(c->codec_tag,

  445.                                            c->bits_per_coded_sample);

  446.     } else {

  447.         c->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat);

  448.         if (!c->codec_id)

  449.             av_log(c, AV_LOG_WARNING,

  450.                    "unknown subformat:"FF_PRI_GUID"\n",

  451.                    FF_ARG_GUID(subformat));

  452.     }

  453. }

  454. 

  455. int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)

  456. {

  457.     int id;

  458. 

  459.     id                 = avio_rl16(pb);

  460.     codec->codec_type  = AVMEDIA_TYPE_AUDIO;

  461.     codec->channels    = avio_rl16(pb);

  462.     codec->sample_rate = avio_rl32(pb);

  463.     codec->bit_rate    = avio_rl32(pb) * 8;

  464.     codec->block_align = avio_rl16(pb);

  465.     if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */

  466.         codec->bits_per_coded_sample = 8;

  467.     } else

  468.         codec->bits_per_coded_sample = avio_rl16(pb);

  469.     if (id == 0xFFFE) {

  470.         codec->codec_tag = 0;

  471.     } else {

  472.         codec->codec_tag = id;

  473.         codec->codec_id  = ff_wav_codec_get_id(id,

  474.                                                codec->bits_per_coded_sample);

  475.     }

  476.     if (size >= 18) {  /* We're obviously dealing with WAVEFORMATEX */

  477.         int cbSize = avio_rl16(pb); /* cbSize */

  478.         size  -= 18;

  479.         cbSize = FFMIN(size, cbSize);

  480.         if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */

  481.             parse_waveformatex(pb, codec);

  482.             cbSize -= 22;

  483.             size   -= 22;

  484.         }

  485.         codec->extradata_size = cbSize;

  486.         if (cbSize > 0) {

  487.             av_free(codec->extradata);

  488.             codec->extradata = av_mallocz(codec->extradata_size +

  489.                                           FF_INPUT_BUFFER_PADDING_SIZE);

  490.             if (!codec->extradata)

  491.                 return AVERROR(ENOMEM);

  492.             avio_read(pb, codec->extradata, codec->extradata_size);

  493.             size -= cbSize;

  494.         }

  495. 

  496.         /* It is possible for the chunk to contain garbage at the end */

  497.         if (size > 0)

  498.             avio_skip(pb, size);

  499.     }

  500.     if (codec->codec_id == AV_CODEC_ID_AAC_LATM) {

  501.         /* Channels and sample_rate values are those prior to applying SBR

  502.          * and/or PS. */

  503.         codec->channels    = 0;

  504.         codec->sample_rate = 0;

  505.     }

  506.     /* override bits_per_coded_sample for G.726 */

  507.     if (codec->codec_id == AV_CODEC_ID_ADPCM_G726)

  508.         codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;

  509. 

  510.     return 0;

  511. }

  512. 

  513. enum AVCodecID ff_wav_codec_get_id(unsigned int tag, int bps)

  514. {

  515.     enum AVCodecID id;

  516.     id = ff_codec_get_id(ff_codec_wav_tags, tag);

  517.     if (id <= 0)

  518.         return id;

  519. 

  520.     if (id == AV_CODEC_ID_PCM_S16LE)

  521.         id = ff_get_pcm_codec_id(bps, 0, 0, ~1);

  522.     else if (id == AV_CODEC_ID_PCM_F32LE)

  523.         id = ff_get_pcm_codec_id(bps, 1, 0,  0);

  524. 

  525.     if (id == AV_CODEC_ID_ADPCM_IMA_WAV && bps == 8)

  526.         id = AV_CODEC_ID_PCM_ZORK;

  527.     return id;

  528. }

  529. 

  530. int ff_get_bmp_header(AVIOContext *pb, AVStream *st)

  531. {

  532.     int tag1;

  533.     avio_rl32(pb); /* size */

  534.     st->codec->width  = avio_rl32(pb);

  535.     st->codec->height = (int32_t)avio_rl32(pb);

  536.     avio_rl16(pb); /* planes */

  537.     st->codec->bits_per_coded_sample = avio_rl16(pb); /* depth */

  538.     tag1                             = avio_rl32(pb);

  539.     avio_rl32(pb); /* ImageSize */

  540.     avio_rl32(pb); /* XPelsPerMeter */

  541.     avio_rl32(pb); /* YPelsPerMeter */

  542.     avio_rl32(pb); /* ClrUsed */

  543.     avio_rl32(pb); /* ClrImportant */

  544.     return tag1;

  545. }

  546. 

  547. int ff_read_riff_info(AVFormatContext *s, int64_t size)

  548. {

  549.     int64_t start, end, cur;

  550.     AVIOContext *pb = s->pb;

  551. 

  552.     start = avio_tell(pb);

  553.     end   = start + size;

  554. 

  555.     while ((cur = avio_tell(pb)) >= 0 &&

  556.            cur <= end - 8 /* = tag + size */) {

  557.         uint32_t chunk_code;

  558.         int64_t chunk_size;

  559.         char key[5] = { 0 };

  560.         char *value;

  561. 

  562.         chunk_code = avio_rl32(pb);

  563.         chunk_size = avio_rl32(pb);

  564. 

  565.         if (chunk_size > end ||

  566.             end - chunk_size < cur ||

  567.             chunk_size == UINT_MAX) {

  568.             av_log(s, AV_LOG_WARNING, "too big INFO subchunk\n");

  569.             break;

  570.         }

  571. 

  572.         chunk_size += (chunk_size & 1);

  573. 

  574.         if (!chunk_code) {

  575.             if (chunk_size)

  576.                 avio_skip(pb, chunk_size);

  577.             else if (pb->eof_reached) {

  578.                 av_log(s, AV_LOG_WARNING, "truncated file\n");

  579.                 return AVERROR_EOF;

  580.             }

  581.             continue;

  582.         }

  583. 

  584.         value = av_malloc(chunk_size + 1);

  585.         if (!value) {

  586.             av_log(s, AV_LOG_ERROR,

  587.                    "out of memory, unable to read INFO tag\n");

  588.             return AVERROR(ENOMEM);

  589.         }

  590. 

  591.         AV_WL32(key, chunk_code);

  592. 

  593.         if (avio_read(pb, value, chunk_size) != chunk_size) {

  594.             av_free(value);

  595.             av_log(s, AV_LOG_WARNING,

  596.                    "premature end of file while reading INFO tag\n");

  597.             break;

  598.         }

  599. 

  600.         value[chunk_size] = 0;

  601. 

  602.         av_dict_set(&s->metadata, key, value, AV_DICT_DONT_STRDUP_VAL);

  603.     }

  604. 

  605.     return 0;

  606. }

  607. #endif /* CONFIG_DEMUXERS */