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/tree.h"
23#include "nut.h"
24
25const AVCodecTag ff_nut_subtitle_tags[] = {
26    { CODEC_ID_TEXT        , MKTAG('U', 'T', 'F', '8') },
27    { CODEC_ID_SSA         , MKTAG('S', 'S', 'A',  0 ) },
28    { CODEC_ID_DVD_SUBTITLE, MKTAG('D', 'V', 'D', 'S') },
29    { CODEC_ID_DVB_SUBTITLE, MKTAG('D', 'V', 'B', 'S') },
30    { CODEC_ID_NONE        , 0                         }
31};
32
33void ff_nut_reset_ts(NUTContext *nut, AVRational time_base, int64_t val){
34    int i;
35    for(i=0; i<nut->avf->nb_streams; i++){
36        nut->stream[i].last_pts= av_rescale_rnd(
37            val,
38            time_base.num * (int64_t)nut->stream[i].time_base->den,
39            time_base.den * (int64_t)nut->stream[i].time_base->num,
40            AV_ROUND_DOWN);
41    }
42}
43
44int64_t ff_lsb2full(StreamContext *stream, int64_t lsb){
45    int64_t mask = (1<<stream->msb_pts_shift)-1;
46    int64_t delta= stream->last_pts - mask/2;
47    return  ((lsb - delta)&mask) + delta;
48}
49
50int ff_nut_sp_pos_cmp(Syncpoint *a, Syncpoint *b){
51    return ((a->pos - b->pos) >> 32) - ((b->pos - a->pos) >> 32);
52}
53
54int ff_nut_sp_pts_cmp(Syncpoint *a, Syncpoint *b){
55    return ((a->ts - b->ts) >> 32) - ((b->ts - a->ts) >> 32);
56}
57
58void ff_nut_add_sp(NUTContext *nut, int64_t pos, int64_t back_ptr, int64_t ts){
59    Syncpoint *sp= av_mallocz(sizeof(Syncpoint));
60    struct AVTreeNode *node= av_mallocz(av_tree_node_size);
61
62    sp->pos= pos;
63    sp->back_ptr= back_ptr;
64    sp->ts= ts;
65    av_tree_insert(&nut->syncpoints, sp, ff_nut_sp_pos_cmp, &node);
66    if(node){
67        av_free(sp);
68        av_free(node);
69    }
70}
71
72const Dispositions ff_nut_dispositions[] = {
73    {"default"     , AV_DISPOSITION_DEFAULT},
74    {"dub"         , AV_DISPOSITION_DUB},
75    {"original"    , AV_DISPOSITION_ORIGINAL},
76    {"comment"     , AV_DISPOSITION_COMMENT},
77    {"lyrics"      , AV_DISPOSITION_LYRICS},
78    {"karaoke"     , AV_DISPOSITION_KARAOKE},
79    {""            , 0}
80};
81
82