falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
82314 Commits
32 Branches
837MB
Tree: 2bc66d9e43
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '2bc66d9e43'
${ noResults }
FFmpeg/libavformat/nut.c

332 lines
15KB
Raw Blame History 

  1. /*

  2.  * nut

  3.  * Copyright (c) 2004-2007 Michael Niedermayer

  4.  *

  5.  * This file is part of FFmpeg.

  6.  *

  7.  * FFmpeg 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.  * FFmpeg 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 FFmpeg; 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/mathematics.h"

  23. #include "libavutil/tree.h"

  24. #include "nut.h"

  25. #include "riff.h"

  26. #include "internal.h"

  27. 

  28. const AVCodecTag ff_nut_subtitle_tags[] = {

  29.     { AV_CODEC_ID_TEXT,             MKTAG('U', 'T', 'F', '8') },

  30.     { AV_CODEC_ID_DVD_SUBTITLE,     MKTAG('D', 'V', 'D', 'S') },

  31.     { AV_CODEC_ID_DVB_SUBTITLE,     MKTAG('D', 'V', 'B', 'S') },

  32.     { AV_CODEC_ID_DVB_TELETEXT,     MKTAG('D', 'V', 'B', 'T') },

  33.     { AV_CODEC_ID_NONE,             0                         }

  34. };

  35. 

  36. const AVCodecTag ff_nut_data_tags[] = {

  37.     { AV_CODEC_ID_TEXT,             MKTAG('U', 'T', 'F', '8') },

  38.     { AV_CODEC_ID_NONE,             0 }

  39. };

  40. 

  41. const AVCodecTag ff_nut_video_tags[] = {

  42.     { AV_CODEC_ID_GIF,              MKTAG('G', 'I', 'F',  0 ) },

  43.     { AV_CODEC_ID_XFACE,            MKTAG('X', 'F', 'A', 'C') },

  44.     { AV_CODEC_ID_VP9,              MKTAG('V', 'P', '9', '0') },

  45.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B', 15 ) },

  46.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R', 15 ) },

  47.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B', 16 ) },

  48.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R', 16 ) },

  49.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(15 , 'B', 'G', 'R') },

  50.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(15 , 'R', 'G', 'B') },

  51.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16 , 'B', 'G', 'R') },

  52.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16 , 'R', 'G', 'B') },

  53.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B', 12 ) },

  54.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R', 12 ) },

  55.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(12 , 'B', 'G', 'R') },

  56.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(12 , 'R', 'G', 'B') },

  57.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B', 'A') },

  58.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B',  0 ) },

  59.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R', 'A') },

  60.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R',  0 ) },

  61.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('A', 'B', 'G', 'R') },

  62.     { AV_CODEC_ID_RAWVIDEO,         MKTAG( 0 , 'B', 'G', 'R') },

  63.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('A', 'R', 'G', 'B') },

  64.     { AV_CODEC_ID_RAWVIDEO,         MKTAG( 0 , 'R', 'G', 'B') },

  65.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B', 24 ) },

  66.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R', 24 ) },

  67.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('4', '1', '1', 'P') },

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

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

  70.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('4', '4', '0', 'P') },

  71.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('4', '4', '0', 'P') },

  72.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('4', '4', '4', 'P') },

  73.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('4', '4', '4', 'P') },

  74.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', '1', 'W', '0') },

  75.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', '0', 'W', '1') },

  76.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R',  8 ) },

  77.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B',  8 ) },

  78.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R',  4 ) },

  79.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B',  4 ) },

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

  81.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', '4', 'B', 'Y') },

  82.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'G', 'R', 48 ) },

  83.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'G', 'B', 48 ) },

  84.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(48 , 'B', 'G', 'R') },

  85.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(48 , 'R', 'G', 'B') },

  86.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('R', 'B', 'A', 64 ) },

  87.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('B', 'R', 'A', 64 ) },

  88.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(64 , 'R', 'B', 'A') },

  89.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(64 , 'B', 'R', 'A') },

  90.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 11 ,  9 ) },

  91.     { AV_CODEC_ID_RAWVIDEO,         MKTAG( 9 , 11 , '3', 'Y') },

  92.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 10 ,  9 ) },

  93.     { AV_CODEC_ID_RAWVIDEO,         MKTAG( 9 , 10 , '3', 'Y') },

  94.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3',  0 ,  9 ) },

  95.     { AV_CODEC_ID_RAWVIDEO,         MKTAG( 9 ,  0 , '3', 'Y') },

  96.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 11 , 10 ) },

  97.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10 , 11 , '3', 'Y') },

  98.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 10 , 10 ) },

  99.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10 , 10 , '3', 'Y') },

  100.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3',  0 , 10 ) },

  101.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10 ,  0 , '3', 'Y') },

  102.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 11 , 12 ) },

  103.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(12 , 11 , '3', 'Y') },

  104.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 10 , 12 ) },

  105.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(12 , 10 , '3', 'Y') },

  106.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3',  0 , 12 ) },

  107.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(12 ,  0 , '3', 'Y') },

  108.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 11 , 14 ) },

  109.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(14 , 11 , '3', 'Y') },

  110.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 10 , 14 ) },

  111.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(14 , 10 , '3', 'Y') },

  112.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3',  0 , 14 ) },

  113.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(14 ,  0 , '3', 'Y') },

  114.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '1',  0 , 16 ) },

  115.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16 ,  0 , '1', 'Y') },

  116.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 11 , 16 ) },

  117.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16 , 11 , '3', 'Y') },

  118.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3', 10 , 16 ) },

  119.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16 , 10 , '3', 'Y') },

  120.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '3',  0 , 16 ) },

  121.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16 ,  0 , '3', 'Y') },

  122.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4', 11 ,  8 ) },

  123.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4', 10 ,  8 ) },

  124.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',  0 ,  8 ) },

  125.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '2',  0 ,  8 ) },

  126. 

  127.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '1',   0,   9) },

  128.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(9,     0, '1', 'Y') },

  129.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',  11,   9) },

  130.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(9,    11, '4', 'Y') },

  131.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',  10,   9) },

  132.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(9,    10, '4', 'Y') },

  133.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',   0,   9) },

  134.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(9,     0, '4', 'Y') },

  135. 

  136.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '1',   0,  10) },

  137.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10,    0, '1', 'Y') },

  138.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',  11,  10) },

  139.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10,   11, '4', 'Y') },

  140.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',  10,  10) },

  141.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10,   10, '4', 'Y') },

  142.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',   0,  10) },

  143.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10,    0, '4', 'Y') },

  144. 

  145.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '1',   0,  12) },

  146.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(12,    0, '1', 'Y') },

  147.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '1',   0,  16) },

  148.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16,    0, '1', 'Y') },

  149.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',  11,  16) },

  150.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16,   11, '4', 'Y') },

  151.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',  10,  16) },

  152.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16,   10, '4', 'Y') },

  153.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('Y', '4',   0,  16) },

  154.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16,    0, '4', 'Y') },

  155. 

  156.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '3',   0,   8) },

  157. 

  158.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '3',   0,   9) },

  159.     { AV_CODEC_ID_RAWVIDEO,         MKTAG( 9,    0, '3', 'G') },

  160.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '3',   0,  10) },

  161.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10,    0, '3', 'G') },

  162.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '3',   0,  12) },

  163.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(12,    0, '3', 'G') },

  164.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '3',   0,  14) },

  165.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(14,    0, '3', 'G') },

  166.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '3',   0,  16) },

  167.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16,    0, '3', 'G') },

  168. 

  169.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '4',   0,   8) },

  170. 

  171.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '4', 00 , 10 ) },

  172.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(10 , 00 , '4', 'G') },

  173.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '4', 00 , 12 ) },

  174.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(12 , 00 , '4', 'G') },

  175.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('G', '4', 00 , 16 ) },

  176.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(16 , 00 , '4', 'G') },

  177. 

  178.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('X', 'Y', 'Z' , 36 ) },

  179.     { AV_CODEC_ID_RAWVIDEO,         MKTAG(36 , 'Z' , 'Y', 'X') },

  180. 

  181.     { AV_CODEC_ID_RAWVIDEO,         MKTAG('P', 'A', 'L', 8 ) },

  182. 

  183.     { AV_CODEC_ID_RAWVIDEO, MKTAG(0xBA, 'B', 'G', 8   ) },

  184.     { AV_CODEC_ID_RAWVIDEO, MKTAG(0xBA, 'B', 'G', 16  ) },

  185.     { AV_CODEC_ID_RAWVIDEO, MKTAG(16  , 'G', 'B', 0xBA) },

  186.     { AV_CODEC_ID_RAWVIDEO, MKTAG(0xBA, 'R', 'G', 8   ) },

  187.     { AV_CODEC_ID_RAWVIDEO, MKTAG(0xBA, 'R', 'G', 16  ) },

  188.     { AV_CODEC_ID_RAWVIDEO, MKTAG(16  , 'G', 'R', 0xBA) },

  189.     { AV_CODEC_ID_RAWVIDEO, MKTAG(0xBA, 'G', 'B', 8   ) },

  190.     { AV_CODEC_ID_RAWVIDEO, MKTAG(0xBA, 'G', 'B', 16  ) },

  191.     { AV_CODEC_ID_RAWVIDEO, MKTAG(16,   'B', 'G', 0xBA) },

  192.     { AV_CODEC_ID_RAWVIDEO, MKTAG(0xBA, 'G', 'R', 8   ) },

  193.     { AV_CODEC_ID_RAWVIDEO, MKTAG(0xBA, 'G', 'R', 16  ) },

  194.     { AV_CODEC_ID_RAWVIDEO, MKTAG(16,   'R', 'G', 0xBA) },

  195. 

  196.     { AV_CODEC_ID_NONE,             0 }

  197. };

  198. 

  199. const AVCodecTag ff_nut_audio_extra_tags[] = {

  200.     { AV_CODEC_ID_COMFORT_NOISE,    MKTAG('3', '3', '8', '9') },

  201.     { AV_CODEC_ID_PCM_ALAW,         MKTAG('A', 'L', 'A', 'W') },

  202.     { AV_CODEC_ID_PCM_MULAW,        MKTAG('U', 'L', 'A', 'W') },

  203.     { AV_CODEC_ID_MP3,              MKTAG('M', 'P', '3', ' ') },

  204.     { AV_CODEC_ID_WAVPACK,          MKTAG('w', 'v', 'p', 'k') },

  205.     { AV_CODEC_ID_NONE,             0                         }

  206. };

  207. 

  208. const AVCodecTag ff_nut_audio_tags[] = {

  209.     { AV_CODEC_ID_PCM_F32BE,        MKTAG(32 , 'D', 'F', 'P') },

  210.     { AV_CODEC_ID_PCM_F32LE,        MKTAG('P', 'F', 'D', 32 ) },

  211.     { AV_CODEC_ID_PCM_F64BE,        MKTAG(64 , 'D', 'F', 'P') },

  212.     { AV_CODEC_ID_PCM_F64LE,        MKTAG('P', 'F', 'D', 64 ) },

  213.     { AV_CODEC_ID_PCM_S16BE,        MKTAG(16 , 'D', 'S', 'P') },

  214.     { AV_CODEC_ID_PCM_S16LE,        MKTAG('P', 'S', 'D', 16 ) },

  215.     { AV_CODEC_ID_PCM_S24BE,        MKTAG(24 , 'D', 'S', 'P') },

  216.     { AV_CODEC_ID_PCM_S24LE,        MKTAG('P', 'S', 'D', 24 ) },

  217.     { AV_CODEC_ID_PCM_S32BE,        MKTAG(32 , 'D', 'S', 'P') },

  218.     { AV_CODEC_ID_PCM_S32LE,        MKTAG('P', 'S', 'D', 32 ) },

  219.     { AV_CODEC_ID_PCM_S8,           MKTAG('P', 'S', 'D',  8 ) },

  220.     { AV_CODEC_ID_PCM_U16BE,        MKTAG(16 , 'D', 'U', 'P') },

  221.     { AV_CODEC_ID_PCM_U16LE,        MKTAG('P', 'U', 'D', 16 ) },

  222.     { AV_CODEC_ID_PCM_U24BE,        MKTAG(24 , 'D', 'U', 'P') },

  223.     { AV_CODEC_ID_PCM_U24LE,        MKTAG('P', 'U', 'D', 24 ) },

  224.     { AV_CODEC_ID_PCM_U32BE,        MKTAG(32 , 'D', 'U', 'P') },

  225.     { AV_CODEC_ID_PCM_U32LE,        MKTAG('P', 'U', 'D', 32 ) },

  226.     { AV_CODEC_ID_PCM_U8,           MKTAG('P', 'U', 'D',  8 ) },

  227.     { AV_CODEC_ID_PCM_S8_PLANAR,    MKTAG('P', 'S', 'P',  8 ) },

  228.     { AV_CODEC_ID_PCM_S16BE_PLANAR, MKTAG(16 , 'P', 'S', 'P') },

  229.     { AV_CODEC_ID_PCM_S16LE_PLANAR, MKTAG('P', 'S', 'P', 16 ) },

  230.     { AV_CODEC_ID_PCM_S24LE_PLANAR, MKTAG('P', 'S', 'P', 24 ) },

  231.     { AV_CODEC_ID_PCM_S32LE_PLANAR, MKTAG('P', 'S', 'P', 32 ) },

  232.     { AV_CODEC_ID_NONE,             0                         }

  233. };

  234. 

  235. const AVCodecTag * const ff_nut_codec_tags[] = {

  236.     ff_nut_video_tags, ff_nut_audio_tags, ff_nut_subtitle_tags,

  237.     ff_codec_bmp_tags, ff_codec_wav_tags, ff_nut_audio_extra_tags, ff_nut_data_tags, 0

  238. };

  239. 

  240. void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val)

  241. {

  242.     int i;

  243.     for (i = 0; i < nut->avf->nb_streams; i++)

  244.         nut->stream[i].last_pts =

  245.             av_rescale_rnd(val,

  246.                            time_base.num * (int64_t)nut->stream[i].time_base->den,

  247.                            time_base.den * (int64_t)nut->stream[i].time_base->num,

  248.                            AV_ROUND_DOWN);

  249. }

  250. 

  251. int64_t ff_lsb2full(StreamContext *stream, int64_t lsb)

  252. {

  253.     int64_t mask  = (1ULL << stream->msb_pts_shift) - 1;

  254.     int64_t delta = stream->last_pts - mask / 2;

  255.     return ((lsb - delta) & mask) + delta;

  256. }

  257. 

  258. int ff_nut_sp_pos_cmp(const void *a, const void *b)

  259. {

  260.     const Syncpoint *va = a, *vb = b;

  261.     return ((va->pos - vb->pos) >> 32) - ((vb->pos - va->pos) >> 32);

  262. }

  263. 

  264. int ff_nut_sp_pts_cmp(const void *a, const void *b)

  265. {

  266.     const Syncpoint *va = a, *vb = b;

  267.     return ((va->ts - vb->ts) >> 32) - ((vb->ts - va->ts) >> 32);

  268. }

  269. 

  270. int ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts)

  271. {

  272.     Syncpoint *sp           = av_mallocz(sizeof(Syncpoint));

  273.     struct AVTreeNode *node = av_tree_node_alloc();

  274. 

  275.     if (!sp || !node) {

  276.         av_freep(&sp);

  277.         av_freep(&node);

  278.         return AVERROR(ENOMEM);

  279.     }

  280. 

  281.     nut->sp_count++;

  282. 

  283.     sp->pos      = pos;

  284.     sp->back_ptr = back_ptr;

  285.     sp->ts       = ts;

  286.     av_tree_insert(&nut->syncpoints, sp, ff_nut_sp_pos_cmp, &node);

  287.     if (node) {

  288.         av_free(sp);

  289.         av_free(node);

  290.     }

  291. 

  292.     return 0;

  293. }

  294. 

  295. static int enu_free(void *opaque, void *elem)

  296. {

  297.     av_free(elem);

  298.     return 0;

  299. }

  300. 

  301. void ff_nut_free_sp(NUTContext *nut)

  302. {

  303.     if (nut->syncpoints) {

  304.         av_tree_enumerate(nut->syncpoints, NULL, NULL, enu_free);

  305.         av_tree_destroy(nut->syncpoints);

  306.     }

  307. }

  308. 

  309. const Dispositions ff_nut_dispositions[] = {

  310.     { "default",        AV_DISPOSITION_DEFAULT  },

  311.     { "dub",            AV_DISPOSITION_DUB      },

  312.     { "original",       AV_DISPOSITION_ORIGINAL },

  313.     { "comment",        AV_DISPOSITION_COMMENT  },

  314.     { "lyrics",         AV_DISPOSITION_LYRICS   },

  315.     { "karaoke",        AV_DISPOSITION_KARAOKE  },

  316.     { "",               0                       }

  317. };

  318. 

  319. const AVMetadataConv ff_nut_metadata_conv[] = {

  320.     { "Author",         "artist"      },

  321.     { "X-CreationTime", "date"        },

  322.     { "CreationTime",   "date"        },

  323.     { "SourceFilename", "filename"    },

  324.     { "X-Language",     "language"    },

  325.     { "X-Disposition",  "disposition" },

  326.     { "X-Replaces",     "replaces"    },

  327.     { "X-Depends",      "depends"     },

  328.     { "X-Uses",         "uses"        },

  329.     { "X-UsesFont",     "usesfont"    },

  330.     { 0 },

  331. };