mirror of
https://gitee.com/openharmony/third_party_ffmpeg
synced 2024-11-24 11:49:48 +00:00
6e8b982bcc
flat arrays which have lower overhead than millions of mallocd() elements. Originally committed as revision 11399 to svn://svn.ffmpeg.org/ffmpeg/trunk
63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/*
|
|
* 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 "nut.h"
|
|
#include "tree.h"
|
|
|
|
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 / nut->time_base_count,
|
|
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(syncpoint_t *a, syncpoint_t *b){
|
|
return ((a->pos - b->pos) >> 32) - ((b->pos - a->pos) >> 32);
|
|
}
|
|
|
|
int ff_nut_sp_pts_cmp(syncpoint_t *a, syncpoint_t *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_t *sp= av_mallocz(sizeof(syncpoint_t));
|
|
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, ff_nut_sp_pos_cmp, &node);
|
|
if(node){
|
|
av_free(sp);
|
|
av_free(node);
|
|
}
|
|
}
|