annotate ffmpeg/libavformat/nut.c @ 13:844d341cf643 tip

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/*
 * nut
 * Copyright (c) 2004-2007 Michael Niedermayer
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/mathematics.h"
#include "libavutil/tree.h"
#include "nut.h"
#include "riff.h"
#include "internal.h"

const AVCodecTag ff_nut_subtitle_tags[] = {
    { AV_CODEC_ID_TEXT        , MKTAG('U', 'T', 'F', '8') },
    { AV_CODEC_ID_SSA         , MKTAG('S', 'S', 'A',  0 ) },
    { AV_CODEC_ID_DVD_SUBTITLE, MKTAG('D', 'V', 'D', 'S') },
    { AV_CODEC_ID_DVB_SUBTITLE, MKTAG('D', 'V', 'B', 'S') },
    { AV_CODEC_ID_DVB_TELETEXT, MKTAG('D', 'V', 'B', 'T') },
    { AV_CODEC_ID_NONE        , 0                         }
};

const AVCodecTag ff_nut_data_tags[] = {
    { AV_CODEC_ID_TEXT        , MKTAG('U', 'T', 'F', '8') },
    { AV_CODEC_ID_NONE        , 0                         }
};

const AVCodecTag ff_nut_video_tags[] = {
    { AV_CODEC_ID_VP9,      MKTAG('V', 'P', '9', '0') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 15 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 15 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(15 , 'B', 'G', 'R') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(15 , 'R', 'G', 'B') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 'B', 'G', 'R') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 'R', 'G', 'B') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 12 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 12 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(12 , 'B', 'G', 'R') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(12 , 'R', 'G', 'B') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 'A') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B',  0 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 'A') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R',  0 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('A', 'B', 'G', 'R') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG( 0 , 'B', 'G', 'R') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('A', 'R', 'G', 'B') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG( 0 , 'R', 'G', 'B') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 24 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 24 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '1', '1', 'P') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '2', '2', 'P') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '2', '2', 'P') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '4', '0', 'P') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '4', '0', 'P') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '4', '4', 'P') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('4', '4', '4', 'P') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', '1', 'W', '0') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', '0', 'W', '1') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R',  8 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B',  8 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R',  4 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B',  4 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', '4', 'B', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', '4', 'B', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'G', 'R', 48 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'G', 'B', 48 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(48 , 'B', 'G', 'R') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(48 , 'R', 'G', 'B') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('B', 'R', 'A', 64 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('R', 'B', 'A', 64 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(64 , 'B', 'R', 'A') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(64 , 'R', 'B', 'A') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 11 , 10 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 11 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 10 , 10 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 10 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3',  0 , 10 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(10 ,  0 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 11 , 12 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(12 , 11 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 10 , 12 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(12 , 10 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3',  0 , 12 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(12 ,  0 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 11 , 14 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(14 , 11 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 10 , 14 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(14 , 10 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3',  0 , 14 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(14 ,  0 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '1',  0 , 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 ,  0 , '1', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 11 , 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 11 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3', 10 , 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 10 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '3',  0 , 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 ,  0 , '3', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 ,  8 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 10 ,  8 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4',  0 ,  8 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '2',  0 ,  8 ) },

    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '1',  0 ,  9 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG( 9 ,  0 , '1', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 ,  9 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG( 9 , 11 , '4', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 10 ,  9 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG( 9 , 10 , '4', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4',  0 ,  9 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG( 9 ,  0 , '4', 'Y') },

    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '1',  0 , 10 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(10 ,  0 , '1', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 , 10 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 11 , '4', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 10 , 10 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(10 , 10 , '4', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4',  0 , 10 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(10 ,  0 , '4', 'Y') },

    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '1',  0 , 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 ,  0 , '1', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 11 , 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 11 , '4', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4', 10 , 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 , 10 , '4', 'Y') },
    { AV_CODEC_ID_RAWVIDEO, MKTAG('Y', '4',  0 , 16 ) },
    { AV_CODEC_ID_RAWVIDEO, MKTAG(16 ,  0 , '4', 'Y') },

    { AV_CODEC_ID_NONE    , 0                         }
};

static const AVCodecTag nut_audio_extra_tags[] = {
    { AV_CODEC_ID_PCM_ALAW,         MKTAG('A', 'L', 'A', 'W') },
    { AV_CODEC_ID_PCM_MULAW,        MKTAG('U', 'L', 'A', 'W') },
    { AV_CODEC_ID_MP3,              MKTAG('M', 'P', '3', ' ') },
    { AV_CODEC_ID_NONE,             0                         }
};

const AVCodecTag ff_nut_audio_tags[] = {
    { AV_CODEC_ID_PCM_F32BE,        MKTAG(32 , 'D', 'F', 'P') },
    { AV_CODEC_ID_PCM_F32LE,        MKTAG('P', 'F', 'D', 32 ) },
    { AV_CODEC_ID_PCM_F64BE,        MKTAG(64 , 'D', 'F', 'P') },
    { AV_CODEC_ID_PCM_F64LE,        MKTAG('P', 'F', 'D', 64 ) },
    { AV_CODEC_ID_PCM_S16BE,        MKTAG(16 , 'D', 'S', 'P') },
    { AV_CODEC_ID_PCM_S16LE,        MKTAG('P', 'S', 'D', 16 ) },
    { AV_CODEC_ID_PCM_S24BE,        MKTAG(24 , 'D', 'S', 'P') },
    { AV_CODEC_ID_PCM_S24LE,        MKTAG('P', 'S', 'D', 24 ) },
    { AV_CODEC_ID_PCM_S32BE,        MKTAG(32 , 'D', 'S', 'P') },
    { AV_CODEC_ID_PCM_S32LE,        MKTAG('P', 'S', 'D', 32 ) },
    { AV_CODEC_ID_PCM_S8,           MKTAG('P', 'S', 'D',  8 ) },
    { AV_CODEC_ID_PCM_U16BE,        MKTAG(16 , 'D', 'U', 'P') },
    { AV_CODEC_ID_PCM_U16LE,        MKTAG('P', 'U', 'D', 16 ) },
    { AV_CODEC_ID_PCM_U24BE,        MKTAG(24 , 'D', 'U', 'P') },
    { AV_CODEC_ID_PCM_U24LE,        MKTAG('P', 'U', 'D', 24 ) },
    { AV_CODEC_ID_PCM_U32BE,        MKTAG(32 , 'D', 'U', 'P') },
    { AV_CODEC_ID_PCM_U32LE,        MKTAG('P', 'U', 'D', 32 ) },
    { AV_CODEC_ID_PCM_U8,           MKTAG('P', 'U', 'D',  8 ) },
    { AV_CODEC_ID_PCM_S8_PLANAR,    MKTAG('P', 'S', 'P',  8 ) },
    { AV_CODEC_ID_PCM_S16BE_PLANAR, MKTAG(16 , 'P', 'S', 'P') },
    { AV_CODEC_ID_PCM_S16LE_PLANAR, MKTAG('P', 'S', 'P', 16 ) },
    { AV_CODEC_ID_PCM_S24LE_PLANAR, MKTAG('P', 'S', 'P', 24 ) },
    { AV_CODEC_ID_PCM_S32LE_PLANAR, MKTAG('P', 'S', 'P', 32 ) },
    { AV_CODEC_ID_NONE,             0                         }
};

const AVCodecTag * const ff_nut_codec_tags[] = {
    ff_nut_video_tags, ff_nut_audio_tags, ff_nut_subtitle_tags,
    ff_codec_bmp_tags, ff_codec_wav_tags, nut_audio_extra_tags, ff_nut_data_tags, 0
};

void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val){
    int i;
    for(i=0; i<nut->avf->nb_streams; i++){
        nut->stream[i].last_pts= av_rescale_rnd(
            val,
            time_base.num * (int64_t)nut->stream[i].time_base->den,
            time_base.den * (int64_t)nut->stream[i].time_base->num,
            AV_ROUND_DOWN);
    }
}

int64_t ff_lsb2full(StreamContext *stream, int64_t lsb){
    int64_t mask = (1ULL<<stream->msb_pts_shift)-1;
    int64_t delta= stream->last_pts - mask/2;
    return  ((lsb - delta)&mask) + delta;
}

int ff_nut_sp_pos_cmp(const Syncpoint *a, const Syncpoint *b){
    return ((a->pos - b->pos) >> 32) - ((b->pos - a->pos) >> 32);
}

int ff_nut_sp_pts_cmp(const Syncpoint *a, const Syncpoint *b){
    return ((a->ts - b->ts) >> 32) - ((b->ts - a->ts) >> 32);
}

void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts){
    Syncpoint *sp= av_mallocz(sizeof(Syncpoint));
    struct AVTreeNode *node = av_tree_node_alloc();

    nut->sp_count++;

    sp->pos= pos;
    sp->back_ptr= back_ptr;
    sp->ts= ts;
    av_tree_insert(&nut->syncpoints, sp, (void *) ff_nut_sp_pos_cmp, &node);
    if(node){
        av_free(sp);
        av_free(node);
    }
}

static int enu_free(void *opaque, void *elem)
{
    av_free(elem);
    return 0;
}

void ff_nut_free_sp(NUTContext *nut)
{
    av_tree_enumerate(nut->syncpoints, NULL, NULL, enu_free);
    av_tree_destroy(nut->syncpoints);
}

const Dispositions ff_nut_dispositions[] = {
    {"default"     , AV_DISPOSITION_DEFAULT},
    {"dub"         , AV_DISPOSITION_DUB},
    {"original"    , AV_DISPOSITION_ORIGINAL},
    {"comment"     , AV_DISPOSITION_COMMENT},
    {"lyrics"      , AV_DISPOSITION_LYRICS},
    {"karaoke"     , AV_DISPOSITION_KARAOKE},
    {""            , 0}
};

const AVMetadataConv ff_nut_metadata_conv[] = {
    { "Author",         "artist"      },
    { "X-CreationTime", "date"        },
    { "CreationTime",   "date"        },
    { "SourceFilename", "filename"    },
    { "X-Language",     "language"    },
    { "X-Disposition",  "disposition" },
    { "X-Replaces",     "replaces"    },
    { "X-Depends",      "depends"     },
    { "X-Uses",         "uses"        },
    { "X-UsesFont",     "usesfont"    },
    { 0 },
};