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/trunk/ffmpeg/libavformat/isom.c

http://avbin.googlecode.com/
C | 293 lines | 213 code | 35 blank | 45 comment | 14 complexity | d00e4dea3131843d2490d0c8774247ff MD5 | raw file
Possible License(s): GPL-3.0, LGPL-3.0, GPL-2.0, LGPL-2.1 
    

  1. /*
    2. 

  2.  * ISO Media common code
    3. 

  3.  * Copyright (c) 2001 Fabrice Bellard.
    4. 

  4.  * Copyright (c) 2002 Francois Revol <revol@free.fr>
    5. 

  5.  * Copyright (c) 2006 Baptiste Coudurier <baptiste.coudurier@free.fr>
    6. 

  6.  *
    7. 

  7.  * This file is part of FFmpeg.
    8. 

  8.  *
    9. 

  9.  * FFmpeg is free software; you can redistribute it and/or
    10. 

  10.  * modify it under the terms of the GNU Lesser General Public
    11. 

  11.  * License as published by the Free Software Foundation; either
    12. 

  12.  * version 2.1 of the License, or (at your option) any later version.
    13. 

  13.  *
    14. 

  14.  * FFmpeg is distributed in the hope that it will be useful,
    15. 

  15.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    16. 

  16.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    17. 

  17.  * Lesser General Public License for more details.
    18. 

  18.  *
    19. 

  19.  * You should have received a copy of the GNU Lesser General Public
    20. 

  20.  * License along with FFmpeg; if not, write to the Free Software
    21. 

  21.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    22. 

  22.  */
    23. 

  23. 

  24. #include "avformat.h"
    25. 

  25. #include "riff.h"
    26. 

  26. #include "isom.h"
    27. 

  27. 

  28. /* http://www.mp4ra.org */
    29. 

  29. /* ordered by muxing preference */
    30. 

  30. const AVCodecTag ff_mp4_obj_type[] = {
    31. 

  31.     { CODEC_ID_MPEG4     , 0x20 },
    32. 

  32.     { CODEC_ID_H264      , 0x21 },
    33. 

  33.     { CODEC_ID_AAC       , 0x40 },
    34. 

  34.     { CODEC_ID_MPEG2VIDEO, 0x61 }, /* MPEG2 Main */
    35. 

  35.     { CODEC_ID_MPEG2VIDEO, 0x60 }, /* MPEG2 Simple */
    36. 

  36.     { CODEC_ID_MPEG2VIDEO, 0x62 }, /* MPEG2 SNR */
    37. 

  37.     { CODEC_ID_MPEG2VIDEO, 0x63 }, /* MPEG2 Spatial */
    38. 

  38.     { CODEC_ID_MPEG2VIDEO, 0x64 }, /* MPEG2 High */
    39. 

  39.     { CODEC_ID_MPEG2VIDEO, 0x65 }, /* MPEG2 422 */
    40. 

  40.     { CODEC_ID_AAC       , 0x66 }, /* MPEG2 AAC Main */
    41. 

  41.     { CODEC_ID_AAC       , 0x67 }, /* MPEG2 AAC Low */
    42. 

  42.     { CODEC_ID_AAC       , 0x68 }, /* MPEG2 AAC SSR */
    43. 

  43.     { CODEC_ID_MP3       , 0x69 }, /* 13818-3 */
    44. 

  44.     { CODEC_ID_MP2       , 0x69 }, /* 11172-3 */
    45. 

  45.     { CODEC_ID_MPEG1VIDEO, 0x6A }, /* 11172-2 */
    46. 

  46.     { CODEC_ID_MP3       , 0x6B }, /* 11172-3 */
    47. 

  47.     { CODEC_ID_MJPEG     , 0x6C }, /* 10918-1 */
    48. 

  48.     { CODEC_ID_PNG       , 0x6D },
    49. 

  49.     { CODEC_ID_JPEG2000  , 0x6E }, /* 15444-1 */
    50. 

  50.     { CODEC_ID_VC1       , 0xA3 },
    51. 

  51.     { CODEC_ID_DIRAC     , 0xA4 },
    52. 

  52.     { CODEC_ID_AC3       , 0xA5 },
    53. 

  53.     { CODEC_ID_VORBIS    , 0xDD }, /* non standard, gpac uses it */
    54. 

  54.     { CODEC_ID_DVD_SUBTITLE, 0xE0 }, /* non standard, see unsupported-embedded-subs-2.mp4 */
    55. 

  55.     { CODEC_ID_QCELP     , 0xE1 },
    56. 

  56.     { 0, 0 },
    57. 

  57. };
    58. 

  58. 

  59. const AVCodecTag codec_movvideo_tags[] = {
    60. 

  60. /*  { CODEC_ID_, MKTAG('I', 'V', '5', '0') }, *//* Indeo 5.0 */
    61. 

  61. 

  62.     { CODEC_ID_RAWVIDEO, MKTAG('r', 'a', 'w', ' ') }, /* Uncompressed RGB */
    63. 

  63. /*  { CODEC_ID_RAWVIDEO, MKTAG('Y', 'u', 'v', '2') }, *//* Uncompressed YUV422 */
    64. 

  64.     { CODEC_ID_RAWVIDEO, MKTAG('A', 'V', 'U', 'I') }, /* YUV with alpha-channel (AVID Uncompressed) */
    65. 

  65.     { CODEC_ID_RAWVIDEO, MKTAG('2', 'v', 'u', 'y') }, /* UNCOMPRESSED 8BIT 4:2:2 */
    66. 

  66. 

  67.     { CODEC_ID_MJPEG,  MKTAG('j', 'p', 'e', 'g') }, /* PhotoJPEG */
    68. 

  68.     { CODEC_ID_MJPEG,  MKTAG('m', 'j', 'p', 'a') }, /* Motion-JPEG (format A) */
    69. 

  69.     { CODEC_ID_MJPEG,  MKTAG('A', 'V', 'D', 'J') }, /* MJPEG with alpha-channel (AVID JFIF meridien compressed) */
    70. 

  70. /*  { CODEC_ID_MJPEG,  MKTAG('A', 'V', 'R', 'n') }, *//* MJPEG with alpha-channel (AVID ABVB/Truevision NuVista) */
    71. 

  71.     { CODEC_ID_MJPEG,  MKTAG('d', 'm', 'b', '1') }, /* Motion JPEG OpenDML */
    72. 

  72.     { CODEC_ID_MJPEGB, MKTAG('m', 'j', 'p', 'b') }, /* Motion-JPEG (format B) */
    73. 

  73. 

  74.     { CODEC_ID_SVQ1, MKTAG('S', 'V', 'Q', '1') }, /* Sorenson Video v1 */
    75. 

  75.     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', '1') }, /* Sorenson Video v1 */
    76. 

  76.     { CODEC_ID_SVQ1, MKTAG('s', 'v', 'q', 'i') }, /* Sorenson Video v1 (from QT specs)*/
    77. 

  77.     { CODEC_ID_SVQ3, MKTAG('S', 'V', 'Q', '3') }, /* Sorenson Video v3 */
    78. 

  78. 

  79.     { CODEC_ID_MPEG4, MKTAG('m', 'p', '4', 'v') },
    80. 

  80.     { CODEC_ID_MPEG4, MKTAG('D', 'I', 'V', 'X') }, /* OpenDiVX *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
    81. 

  81.     { CODEC_ID_MPEG4, MKTAG('X', 'V', 'I', 'D') },
    82. 

  82.     { CODEC_ID_MPEG4, MKTAG('3', 'I', 'V', '2') }, /* experimental: 3IVX files before ivx D4 4.5.1 */
    83. 

  83. 

  84.     { CODEC_ID_H263, MKTAG('h', '2', '6', '3') }, /* H263 */
    85. 

  85.     { CODEC_ID_H263, MKTAG('s', '2', '6', '3') }, /* H263 ?? works */
    86. 

  86. 

  87.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', 'p') }, /* DV PAL */
    88. 

  88.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'c', ' ') }, /* DV NTSC */
    89. 

  89.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'p', 'p') }, /* DVCPRO PAL produced by FCP */
    90. 

  90.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'p') }, /* DVCPRO50 PAL produced by FCP */
    91. 

  91.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', '5', 'n') }, /* DVCPRO50 NTSC produced by FCP */
    92. 

  92.     { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', 'v') }, /* AVID DV */
    93. 

  93.     { CODEC_ID_DVVIDEO, MKTAG('A', 'V', 'd', '1') }, /* AVID DV100 */
    94. 

  94.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'q') }, /* DVCPRO HD 720p50 */
    95. 

  95.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', 'p') }, /* DVCPRO HD 720p60 */
    96. 

  96.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '5') }, /* DVCPRO HD 50i produced by FCP */
    97. 

  97.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '6') }, /* DVCPRO HD 60i produced by FCP */
    98. 

  98.     { CODEC_ID_DVVIDEO, MKTAG('d', 'v', 'h', '3') }, /* DVCPRO HD 30p produced by FCP */
    99. 

  99. 

  100.     { CODEC_ID_VP3,     MKTAG('V', 'P', '3', '1') }, /* On2 VP3 */
    101. 

  101.     { CODEC_ID_RPZA,    MKTAG('r', 'p', 'z', 'a') }, /* Apple Video (RPZA) */
    102. 

  102.     { CODEC_ID_CINEPAK, MKTAG('c', 'v', 'i', 'd') }, /* Cinepak */
    103. 

  103.     { CODEC_ID_8BPS,    MKTAG('8', 'B', 'P', 'S') }, /* Planar RGB (8BPS) */
    104. 

  104.     { CODEC_ID_SMC,     MKTAG('s', 'm', 'c', ' ') }, /* Apple Graphics (SMC) */
    105. 

  105.     { CODEC_ID_QTRLE,   MKTAG('r', 'l', 'e', ' ') }, /* Apple Animation (RLE) */
    106. 

  106.     { CODEC_ID_MSRLE,   MKTAG('W', 'R', 'L', 'E') },
    107. 

  107.     { CODEC_ID_QDRAW,   MKTAG('q', 'd', 'r', 'w') }, /* QuickDraw */
    108. 

  108. 

  109.     { CODEC_ID_H264, MKTAG('a', 'v', 'c', '1') }, /* AVC-1/H.264 */
    110. 

  110. 

  111.     { CODEC_ID_MPEG1VIDEO, MKTAG('m', 'p', 'e', 'g') }, /* MPEG */
    112. 

  112.     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '1') }, /* MPEG2 HDV 720p30 */
    113. 

  113.     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '2') }, /* MPEG2 HDV 1080i60 */
    114. 

  114.     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '3') }, /* MPEG2 HDV 1080i50 */
    115. 

  115.     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '5') }, /* MPEG2 HDV 720p25 */
    116. 

  116.     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '6') }, /* MPEG2 HDV 1080p24 */
    117. 

  117.     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '7') }, /* MPEG2 HDV 1080p25 */
    118. 

  118.     { CODEC_ID_MPEG2VIDEO, MKTAG('h', 'd', 'v', '8') }, /* MPEG2 HDV 1080p30 */
    119. 

  119.     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'n') }, /* MPEG2 IMX NTSC 525/60 50mb/s produced by FCP */
    120. 

  120.     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '5', 'p') }, /* MPEG2 IMX PAL 625/50 50mb/s produced by FCP */
    121. 

  121.     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'n') }, /* MPEG2 IMX NTSC 525/60 40mb/s produced by FCP */
    122. 

  122.     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '4', 'p') }, /* MPEG2 IMX PAL 625/50 40mb/s produced by FCP */
    123. 

  123.     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'n') }, /* MPEG2 IMX NTSC 525/60 30mb/s produced by FCP */
    124. 

  124.     { CODEC_ID_MPEG2VIDEO, MKTAG('m', 'x', '3', 'p') }, /* MPEG2 IMX PAL 625/50 30mb/s produced by FCP */
    125. 

  125.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', '9') }, /* XDCAM HD422 720p60 CBR */
    126. 

  126.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'a') }, /* XDCAM HD422 720p50 CBR */
    127. 

  127.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'b') }, /* XDCAM HD422 1080i60 CBR */
    128. 

  128.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'c') }, /* XDCAM HD422 1080i50 CBR */
    129. 

  129.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'd') }, /* XDCAM HD422 1080p24 CBR */
    130. 

  130.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'e') }, /* XDCAM HD422 1080p25 CBR */
    131. 

  131.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', '5', 'f') }, /* XDCAM HD422 1080p30 CBR */
    132. 

  132.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '1') }, /* XDCAM EX 720p30 VBR */
    133. 

  133.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '2') }, /* XDCAM HD 1080i60 */
    134. 

  134.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '3') }, /* XDCAM HD 1080i50 VBR */
    135. 

  135.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '4') }, /* XDCAM EX 720p24 VBR */
    136. 

  136.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '5') }, /* XDCAM EX 720p25 VBR */
    137. 

  137.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '6') }, /* XDCAM HD 1080p24 VBR */
    138. 

  138.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '7') }, /* XDCAM HD 1080p25 VBR */
    139. 

  139.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '8') }, /* XDCAM HD 1080p30 VBR */
    140. 

  140.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', '9') }, /* XDCAM EX 720p60 VBR */
    141. 

  141.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'a') }, /* XDCAM EX 720p50 VBR */
    142. 

  142.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'b') }, /* XDCAM EX 1080i60 VBR */
    143. 

  143.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'c') }, /* XDCAM EX 1080i50 VBR */
    144. 

  144.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'd') }, /* XDCAM EX 1080p24 VBR */
    145. 

  145.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'e') }, /* XDCAM EX 1080p25 VBR */
    146. 

  146.     { CODEC_ID_MPEG2VIDEO, MKTAG('x', 'd', 'v', 'f') }, /* XDCAM EX 1080p30 VBR */
    147. 

  147.     { CODEC_ID_MPEG2VIDEO, MKTAG('A', 'V', 'm', 'p') }, /* AVID IMX PAL */
    148. 

  148. 

  149.   //{ CODEC_ID_JPEG2000, MKTAG('m', 'j', 'p', '2') }, /* JPEG 2000 produced by FCP */
    150. 

  150. 

  151.     { CODEC_ID_TARGA, MKTAG('t', 'g', 'a', ' ') }, /* Truevision Targa */
    152. 

  152.     { CODEC_ID_TIFF,  MKTAG('t', 'i', 'f', 'f') }, /* TIFF embedded in MOV */
    153. 

  153.     { CODEC_ID_GIF,   MKTAG('g', 'i', 'f', ' ') }, /* embedded gif files as frames (usually one "click to play movie" frame) */
    154. 

  154.     { CODEC_ID_PNG,   MKTAG('p', 'n', 'g', ' ') },
    155. 

  155. 

  156.     { CODEC_ID_VC1, MKTAG('v', 'c', '-', '1') }, /* SMPTE RP 2025 */
    157. 

  157.     { CODEC_ID_CAVS, MKTAG('a', 'v', 's', '2') },
    158. 

  158. 

  159.     { CODEC_ID_DIRAC, MKTAG('d', 'r', 'a', 'c') },
    160. 

  160.     { CODEC_ID_DNXHD, MKTAG('A', 'V', 'd', 'n') }, /* AVID DNxHD */
    161. 

  161.     { CODEC_ID_SGI,   MKTAG('s', 'g', 'i', ' ') }, /* SGI  */
    162. 

  162. 

  163.     { CODEC_ID_NONE, 0 },
    164. 

  164. };
    165. 

  165. 

  166. const AVCodecTag codec_movaudio_tags[] = {
    167. 

  167.     { CODEC_ID_PCM_S32BE, MKTAG('i', 'n', '3', '2') },
    168. 

  168.     { CODEC_ID_PCM_S32LE, MKTAG('i', 'n', '3', '2') },
    169. 

  169.     { CODEC_ID_PCM_S24BE, MKTAG('i', 'n', '2', '4') },
    170. 

  170.     { CODEC_ID_PCM_S24LE, MKTAG('i', 'n', '2', '4') },
    171. 

  171.     { CODEC_ID_PCM_S16BE, MKTAG('t', 'w', 'o', 's') }, /* 16 bits */
    172. 

  172.     { CODEC_ID_PCM_S16LE, MKTAG('s', 'o', 'w', 't') }, /*  */
    173. 

  173.     { CODEC_ID_PCM_S16LE, MKTAG('l', 'p', 'c', 'm') },
    174. 

  174.     { CODEC_ID_PCM_F32BE, MKTAG('f', 'l', '3', '2') },
    175. 

  175.     { CODEC_ID_PCM_F64BE, MKTAG('f', 'l', '6', '4') },
    176. 

  176.     { CODEC_ID_PCM_S8,    MKTAG('s', 'o', 'w', 't') },
    177. 

  177.     { CODEC_ID_PCM_U8,    MKTAG('r', 'a', 'w', ' ') }, /* 8 bits unsigned */
    178. 

  178.     { CODEC_ID_PCM_U8,    MKTAG('N', 'O', 'N', 'E') }, /* uncompressed */
    179. 

  179.     { CODEC_ID_PCM_MULAW, MKTAG('u', 'l', 'a', 'w') }, /*  */
    180. 

  180.     { CODEC_ID_PCM_ALAW,  MKTAG('a', 'l', 'a', 'w') }, /*  */
    181. 

  181. 

  182.     { CODEC_ID_ADPCM_IMA_QT, MKTAG('i', 'm', 'a', '4') }, /* IMA-4 ADPCM */
    183. 

  183. 

  184.     { CODEC_ID_MACE3, MKTAG('M', 'A', 'C', '3') }, /* Macintosh Audio Compression and Expansion 3:1 */
    185. 

  185.     { CODEC_ID_MACE6, MKTAG('M', 'A', 'C', '6') }, /* Macintosh Audio Compression and Expansion 6:1 */
    186. 

  186. 

  187.     { CODEC_ID_MP3, MKTAG('.', 'm', 'p', '3') }, /* MPEG layer 3 */ /* sample files at http://www.3ivx.com/showcase.html use this tag */
    188. 

  188.     { CODEC_ID_MP3, 0x6D730055 }, /* MPEG layer 3 */
    189. 

  189. 

  190. /*  { CODEC_ID_OGG_VORBIS, MKTAG('O', 'g', 'g', 'S') }, *//* sample files at http://heroinewarrior.com/xmovie.php3 use this tag */
    191. 

  191. 

  192.     { CODEC_ID_AAC, MKTAG('m', 'p', '4', 'a') }, /* MPEG-4 AAC */
    193. 

  193.     { CODEC_ID_AC3, MKTAG('a', 'c', '-', '3') }, /* ETSI TS 102 366 Annex F */
    194. 

  194. 

  195.     { CODEC_ID_AMR_NB, MKTAG('s', 'a', 'm', 'r') }, /* AMR-NB 3gp */
    196. 

  196.     { CODEC_ID_AMR_WB, MKTAG('s', 'a', 'w', 'b') }, /* AMR-WB 3gp */
    197. 

  197. 

  198.     { CODEC_ID_GSM,  MKTAG('a', 'g', 's', 'm') },
    199. 

  199.     { CODEC_ID_ALAC, MKTAG('a', 'l', 'a', 'c') }, /* Apple Lossless */
    200. 

  200. 

  201.     { CODEC_ID_QCELP, MKTAG('Q','c','l','p') },
    202. 

  202.     { CODEC_ID_QCELP, MKTAG('s','q','c','p') }, /* ISO Media fourcc */
    203. 

  203. 

  204.     { CODEC_ID_QDM2, MKTAG('Q', 'D', 'M', '2') }, /* QDM2 */
    205. 

  205. 

  206.     { CODEC_ID_DVAUDIO, MKTAG('v', 'd', 'v', 'a') },
    207. 

  207.     { CODEC_ID_DVAUDIO, MKTAG('d', 'v', 'c', 'a') },
    208. 

  208. 

  209.     { CODEC_ID_WMAV2, MKTAG('W', 'M', 'A', '2') },
    210. 

  210. 

  211.     { CODEC_ID_NONE, 0 },
    212. 

  212. };
    213. 

  213. 

  214. const AVCodecTag ff_codec_movsubtitle_tags[] = {
    215. 

  215.     { CODEC_ID_MOV_TEXT, MKTAG('t', 'e', 'x', 't') },
    216. 

  216.     { CODEC_ID_MOV_TEXT, MKTAG('t', 'x', '3', 'g') },
    217. 

  217.     { CODEC_ID_NONE, 0 },
    218. 

  218. };
    219. 

  219. 

  220. /* map numeric codes from mdhd atom to ISO 639 */
    221. 

  221. /* cf. QTFileFormat.pdf p253, qtff.pdf p205 */
    222. 

  222. /* http://developer.apple.com/documentation/mac/Text/Text-368.html */
    223. 

  223. /* deprecated by putting the code as 3*5bit ascii */
    224. 

  224. static const char * const mov_mdhd_language_map[] = {
    225. 

  225.     /* 0-9 */
    226. 

  226.     "eng", "fra", "ger", "ita", "dut", "sve", "spa", "dan", "por", "nor",
    227. 

  227.     "heb", "jpn", "ara", "fin", "gre", "ice", "mlt", "tur", "hr "/*scr*/, "chi"/*ace?*/,
    228. 

  228.     "urd", "hin", "tha", "kor", "lit", "pol", "hun", "est", "lav",  NULL,
    229. 

  229.     "fo ",  NULL, "rus", "chi",  NULL, "iri", "alb", "ron", "ces", "slk",
    230. 

  230.     "slv", "yid", "sr ", "mac", "bul", "ukr", "bel", "uzb", "kaz", "aze",
    231. 

  231.     /*?*/
    232. 

  232.     "aze", "arm", "geo", "mol", "kir", "tgk", "tuk", "mon",  NULL, "pus",
    233. 

  233.     "kur", "kas", "snd", "tib", "nep", "san", "mar", "ben", "asm", "guj",
    234. 

  234.     "pa ", "ori", "mal", "kan", "tam", "tel",  NULL, "bur", "khm", "lao",
    235. 

  235.     /*                   roman? arabic? */
    236. 

  236.     "vie", "ind", "tgl", "may", "may", "amh", "tir", "orm", "som", "swa",
    237. 

  237.     /*==rundi?*/
    238. 

  238.     NULL, "run",  NULL, "mlg", "epo",  NULL,  NULL,  NULL,  NULL,  NULL,
    239. 

  239.     /* 100 */
    240. 

  240.     NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
    241. 

  241.     NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,
    242. 

  242.     NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL,  NULL, "wel", "baq",
    243. 

  243.     "cat", "lat", "que", "grn", "aym", "tat", "uig", "dzo", "jav"
    244. 

  244. };
    245. 

  245. 

  246. int ff_mov_iso639_to_lang(const char *lang, int mp4)
    247. 

  247. {
    248. 

  248.     int i, code = 0;
    249. 

  249. 

  250.     /* old way, only for QT? */
    251. 

  251.     for (i = 0; !mp4 && i < FF_ARRAY_ELEMS(mov_mdhd_language_map); i++) {
    252. 

  252.         if (mov_mdhd_language_map[i] && !strcmp(lang, mov_mdhd_language_map[i]))
    253. 

  253.             return i;
    254. 

  254.     }
    255. 

  255.     /* XXX:can we do that in mov too? */
    256. 

  256.     if (!mp4)
    257. 

  257.         return 0;
    258. 

  258.     /* handle undefined as such */
    259. 

  259.     if (lang[0] == '\0')
    260. 

  260.         lang = "und";
    261. 

  261.     /* 5bit ascii */
    262. 

  262.     for (i = 0; i < 3; i++) {
    263. 

  263.         unsigned char c = (unsigned char)lang[i];
    264. 

  264.         if (c < 0x60)
    265. 

  265.             return 0;
    266. 

  266.         if (c > 0x60 + 0x1f)
    267. 

  267.             return 0;
    268. 

  268.         code <<= 5;
    269. 

  269.         code |= (c - 0x60);
    270. 

  270.     }
    271. 

  271.     return code;
    272. 

  272. }
    273. 

  273. 

  274. int ff_mov_lang_to_iso639(int code, char *to)
    275. 

  275. {
    276. 

  276.     int i;
    277. 

  277.     /* is it the mangled iso code? */
    278. 

  278.     /* see http://www.geocities.com/xhelmboyx/quicktime/formats/mp4-layout.txt */
    279. 

  279.     if (code > 138) {
    280. 

  280.         for (i = 2; i >= 0; i--) {
    281. 

  281.             to[i] = 0x60 + (code & 0x1f);
    282. 

  282.             code >>= 5;
    283. 

  283.         }
    284. 

  284.         return 1;
    285. 

  285.     }
    286. 

  286.     /* old fashion apple lang code */
    287. 

  287.     if (code >= FF_ARRAY_ELEMS(mov_mdhd_language_map))
    288. 

  288.         return 0;
    289. 

  289.     if (!mov_mdhd_language_map[code])
    290. 

  290.         return 0;
    291. 

  291.     strncpy(to, mov_mdhd_language_map[code], 4);
    292. 

  292.     return 1;
    293. 

  293. }
    294. 

  294.