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FFmpeg/libavformat/nut.c

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  1. /*

  2.  * nut

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

  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/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_SSA         , MKTAG('S', 'S', 'A',  0 ) },

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

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

  33.     { AV_CODEC_ID_NONE        , 0                         }

  34. };

  35. 

  36. const AVCodecTag ff_nut_video_tags[] = {

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  90.     { AV_CODEC_ID_NONE    , 0                         }

  91. };

  92. 

  93. const AVCodecTag ff_nut_audio_tags[] = {

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  115.     { AV_CODEC_ID_NONE,             0                         }

  116. };

  117. 

  118. const AVCodecTag * const ff_nut_codec_tags[] = {

  119.     ff_nut_video_tags, ff_nut_audio_tags, ff_nut_subtitle_tags,

  120.     ff_codec_bmp_tags, ff_codec_wav_tags, 0

  121. };

  122. 

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

  124.     int i;

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

  126.         nut->stream[i].last_pts= av_rescale_rnd(

  127.             val,

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

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

  130.             AV_ROUND_DOWN);

  131.     }

  132. }

  133. 

  134. int64_t ff_lsb2full(StreamContext *stream, int64_t lsb){

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

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

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

  138. }

  139. 

  140. int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b){

  141.     return ((a->pos - b->pos) >> 32) - ((b->pos - a->pos) >> 32);

  142. }

  143. 

  144. int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b){

  145.     return ((a->ts - b->ts) >> 32) - ((b->ts - a->ts) >> 32);

  146. }

  147. 

  148. void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts){

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

  150.     struct AVTreeNode *node = av_tree_node_alloc();

  151. 

  152.     sp->pos= pos;

  153.     sp->back_ptr= back_ptr;

  154.     sp->ts= ts;

  155.     av_tree_insert(&nut->syncpoints, sp, (void *) ff_nut_sp_pos_cmp, &node);

  156.     if(node){

  157.         av_free(sp);

  158.         av_free(node);

  159.     }

  160. }

  161. 

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

  163. {

  164.     av_free(elem);

  165.     return 0;

  166. }

  167. 

  168. void ff_nut_free_sp(NUTContext *nut)

  169. {

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

  171.     av_tree_destroy(nut->syncpoints);

  172. }

  173. 

  174. const Dispositions ff_nut_dispositions[] = {

  175.     {"default"     , AV_DISPOSITION_DEFAULT},

  176.     {"dub"         , AV_DISPOSITION_DUB},

  177.     {"original"    , AV_DISPOSITION_ORIGINAL},

  178.     {"comment"     , AV_DISPOSITION_COMMENT},

  179.     {"lyrics"      , AV_DISPOSITION_LYRICS},

  180.     {"karaoke"     , AV_DISPOSITION_KARAOKE},

  181.     {""            , 0}

  182. };

  183. 

  184. const AVMetadataConv ff_nut_metadata_conv[] = {

  185.     { "Author",         "artist"      },

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

  187.     { "CreationTime",   "date"        },

  188.     { "SourceFilename", "filename"    },

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

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

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

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

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

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

  195.     { 0 },

  196. };