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avcodec: deprecate AVFrame.age

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This was intended as an optimisation for skipped blocks in MPEG2
P-frames and never used elsewhere.  Removing this "optimisation"
speeds up MPEG2 decoding by 1-2% (ARM Cortex-A9).

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Mans Rullgard
2011-12-18 20:41:42 +00:00
parent bc78ceec2b
commit 8400b126ac
9 changed files with 17 additions and 57 deletions
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10
libavcodec/utils.c
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@@ -346,7 +346,6 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
int w= s->width;
int h= s->height;
InternalBuffer *buf;
int *picture_number;
AVCodecInternal *avci = s->internal;
if(pic->data[0]!=NULL) {
@@ -367,8 +366,6 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
}
buf = &avci->buffer[avci->buffer_count];
picture_number = &(avci->buffer[INTERNAL_BUFFER_SIZE]).last_pic_num; //FIXME ugly hack
(*picture_number)++;
if(buf->base[0] && (buf->width != w || buf->height != h || buf->pix_fmt != s->pix_fmt)){
if(s->active_thread_type&FF_THREAD_FRAME) {
@@ -382,10 +379,7 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
}
}
if(buf->base[0]){
pic->age= *picture_number - buf->last_pic_num;
buf->last_pic_num= *picture_number;
}else{
if (!buf->base[0]) {
int h_chroma_shift, v_chroma_shift;
int size[4] = {0};
int tmpsize;
@@ -424,7 +418,6 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
size[i] = picture.data[i+1] - picture.data[i];
size[i] = tmpsize - (picture.data[i] - picture.data[0]);
buf->last_pic_num= -256*256*256*64;
memset(buf->base, 0, sizeof(buf->base));
memset(buf->data, 0, sizeof(buf->data));
@@ -453,7 +446,6 @@ static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
buf->width = s->width;
buf->height = s->height;
buf->pix_fmt= s->pix_fmt;
pic->age= 256*256*256*64;
}
pic->type= FF_BUFFER_TYPE_INTERNAL;