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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/tree.h"
#include "nut.h"
#include "internal.h"
const AVCodecTag ff_nut_subtitle_tags[] = {
{ CODEC_ID_TEXT , MKTAG('U', 'T', 'F', '8') },
{ CODEC_ID_SSA , MKTAG('S', 'S', 'A', 0 ) },
{ CODEC_ID_DVD_SUBTITLE, MKTAG('D', 'V', 'D', 'S') },
{ CODEC_ID_DVB_SUBTITLE, MKTAG('D', 'V', 'B', 'S') },
{ CODEC_ID_NONE , 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 = (1<<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_mallocz(av_tree_node_size);
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 },
};
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