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make mpeg decoder handle mid-stream changes in resolution

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patch by Heikki Lindholm holindho at cs helsinki fi
original thread: [Ffmpeg-devel] [PATCH] fix mid-stream resolution changes
date: Sat Mar 31 13:52:50 CEST 2007

Originally committed as revision 8865 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Heikki Lindholm 2007-05-02 08:18:28 +00:00 committed by Benoit Fouet
parent f52a02be35
commit 29644cb504
1 changed files with 5 additions and 0 deletions
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5
libavcodec/mpeg12.c
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@ -2084,6 +2084,7 @@ typedef struct Mpeg1Context {
int slice_count;
int swap_uv;//indicate VCR2
int save_aspect_info;
int save_width, save_height;
AVRational frame_rate_ext; ///< MPEG-2 specific framerate modificator
} Mpeg1Context;
@ -2138,6 +2139,8 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){
(s1->mpeg_enc_ctx_allocated == 0)||
avctx->coded_width != s->width ||
avctx->coded_height != s->height||
s1->save_width != s->width ||
s1->save_height != s->height ||
s1->save_aspect_info != s->aspect_ratio_info||
0)
{
@ -2155,6 +2158,8 @@ static int mpeg_decode_postinit(AVCodecContext *avctx){
avcodec_set_dimensions(avctx, s->width, s->height);
avctx->bit_rate = s->bit_rate;
s1->save_aspect_info = s->aspect_ratio_info;
s1->save_width = s->width;
s1->save_height = s->height;
//low_delay may be forced, in this case we will have B frames
//that behave like P frames