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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 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 "internal.h"

  26. 

  27. const AVCodecTag ff_nut_subtitle_tags[] = {

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

  29.     { AV_CODEC_ID_SSA         , MKTAG('S', 'S', 'A',  0 ) },

  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_NONE        , 0                         }

  33. };

  34. 

  35. const AVCodecTag ff_nut_video_tags[] = {

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  111.     { AV_CODEC_ID_NONE    , 0                         }

  112. };

  113. 

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

  115.     int i;

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

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

  118.             val,

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

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

  121.             AV_ROUND_DOWN);

  122.     }

  123. }

  124. 

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

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

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

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

  129. }

  130. 

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

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

  133. }

  134. 

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

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

  137. }

  138. 

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

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

  141.     struct AVTreeNode *node= av_mallocz(av_tree_node_size);

  142. 

  143.     sp->pos= pos;

  144.     sp->back_ptr= back_ptr;

  145.     sp->ts= ts;

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

  147.     if(node){

  148.         av_free(sp);

  149.         av_free(node);

  150.     }

  151. }

  152. 

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

  154. {

  155.     av_free(elem);

  156.     return 0;

  157. }

  158. 

  159. void ff_nut_free_sp(NUTContext *nut)

  160. {

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

  162.     av_tree_destroy(nut->syncpoints);

  163. }

  164. 

  165. const Dispositions ff_nut_dispositions[] = {

  166.     {"default"     , AV_DISPOSITION_DEFAULT},

  167.     {"dub"         , AV_DISPOSITION_DUB},

  168.     {"original"    , AV_DISPOSITION_ORIGINAL},

  169.     {"comment"     , AV_DISPOSITION_COMMENT},

  170.     {"lyrics"      , AV_DISPOSITION_LYRICS},

  171.     {"karaoke"     , AV_DISPOSITION_KARAOKE},

  172.     {""            , 0}

  173. };

  174. 

  175. const AVMetadataConv ff_nut_metadata_conv[] = {

  176.     { "Author",         "artist"      },

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

  178.     { "CreationTime",   "date"        },

  179.     { "SourceFilename", "filename"    },

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

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

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

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

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

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

  186.     { 0 },

  187. };