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lavc: add a sample_aspect_ratio field to AVFrame

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The sample aspect ratio is a per-frame property, so it makes sense to
define it in AVFrame rather than in the codec/stream context.
Simplify application-level sample aspect ratio information extraction,
and allow further simplifications.
This commit is contained in:
Stefano Sabatini 2011-04-29 13:04:47 +02:00
parent 1ba5727242
commit 77e9dee8ae
10 changed files with 28 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
cmdutils.c
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@ -912,6 +912,7 @@ int get_filtered_video_frame(AVFilterContext *ctx, AVFrame *frame,
frame->top_field_first = picref->video->top_field_first;
frame->key_frame = picref->video->key_frame;
frame->pict_type = picref->video->pict_type;
frame->sample_aspect_ratio = picref->video->pixel_aspect;
return 1;
}

3
doc/APIchanges
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@ -13,6 +13,9 @@ libavutil: 2011-04-18
API changes, most recent first:
2011-05-01 - xxxxxxx - lavc 53.3.0 - AVFrame
Add a sample_aspect_ratio field to AVFrame.
2011-05-01 - xxxxxxx - lavc 53.2.0 - AVFrame
Add a pkt_pos field to AVFrame.

7
ffmpeg.c
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@ -1631,13 +1631,12 @@ static int output_packet(AVInputStream *ist, int ist_index,
for(i=0;i<nb_ostreams;i++) {
ost = ost_table[i];
if (ost->input_video_filter && ost->source_index == ist_index) {
AVRational sar;
if (ist->st->sample_aspect_ratio.num) sar = ist->st->sample_aspect_ratio;
else sar = ist->st->codec->sample_aspect_ratio;
if (!picture.sample_aspect_ratio.num)
picture.sample_aspect_ratio = ist->st->sample_aspect_ratio;
// add it to be filtered
av_vsrc_buffer_add_frame2(ost->input_video_filter, &picture,
ist->pts,
sar, ist->st->codec->width, ist->st->codec->height,
ist->st->codec->width, ist->st->codec->height,
ist->st->codec->pix_fmt, ""); //TODO user setable params
}
}

2
ffplay.c
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@ -1688,7 +1688,7 @@ static int input_request_frame(AVFilterLink *link)
picref->pts = pts;
picref->pos = priv->frame->pkt_pos;
picref->video->pixel_aspect = priv->is->video_st->codec->sample_aspect_ratio;
picref->video->pixel_aspect = priv->frame->sample_aspect_ratio;
avfilter_start_frame(link, picref);
avfilter_draw_slice(link, 0, link->h, 1);
avfilter_end_frame(link);

7
libavcodec/avcodec.h
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@ -1011,6 +1011,13 @@ typedef struct AVPanScan{
* - decoding: Read by user.\
*/\
int64_t pkt_pos;\
\
/**\
* reordered sample aspect ratio for the video frame, 0/1 if unknown\unspecified
* - encoding: unused\
* - decoding: Read by user.\
*/\
AVRational sample_aspect_ratio;\
#define FF_QSCALE_TYPE_MPEG1 0

3
libavcodec/utils.c
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@ -455,6 +455,7 @@ void avcodec_get_frame_defaults(AVFrame *pic){
pic->pts = pic->best_effort_timestamp = AV_NOPTS_VALUE;
pic->pkt_pos = -1;
pic->key_frame= 1;
pic->sample_aspect_ratio = (AVRational){0, 1};
}
AVFrame *avcodec_alloc_frame(void){
@ -737,6 +738,8 @@ int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *pi
avpkt);
picture->pkt_dts= avpkt->dts;
picture->pkt_pos= avpkt->pos;
if (!picture->sample_aspect_ratio.num)
picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
}
emms_c(); //needed to avoid an emms_c() call before every return;

2
libavcodec/version.h
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@ -21,7 +21,7 @@
#define AVCODEC_VERSION_H
#define LIBAVCODEC_VERSION_MAJOR 53
#define LIBAVCODEC_VERSION_MINOR 2
#define LIBAVCODEC_VERSION_MINOR 3
#define LIBAVCODEC_VERSION_MICRO 0
#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \

10
libavfilter/vsrc_buffer.c
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@ -39,7 +39,7 @@ typedef struct {
} BufferSourceContext;
int av_vsrc_buffer_add_frame2(AVFilterContext *buffer_filter, AVFrame *frame,
int64_t pts, AVRational pixel_aspect, int width,
int64_t pts, int width,
int height, enum PixelFormat pix_fmt,
const char *sws_param)
{
@ -104,20 +104,20 @@ int av_vsrc_buffer_add_frame2(AVFilterContext *buffer_filter, AVFrame *frame,
c->frame.top_field_first = frame->top_field_first;
c->frame.key_frame = frame->key_frame;
c->frame.pict_type = frame->pict_type;
c->frame.sample_aspect_ratio = frame->sample_aspect_ratio;
c->pts = pts;
c->pixel_aspect = pixel_aspect;
c->has_frame = 1;
return 0;
}
int av_vsrc_buffer_add_frame(AVFilterContext *buffer_filter, AVFrame *frame,
int64_t pts, AVRational pixel_aspect)
int64_t pts)
{
BufferSourceContext *c = buffer_filter->priv;
return av_vsrc_buffer_add_frame2(buffer_filter, frame,
pts, pixel_aspect, c->w,
pts, c->w,
c->h, c->pix_fmt, "");
}
@ -190,7 +190,7 @@ static int request_frame(AVFilterLink *link)
picref->format, link->w, link->h);
picref->pts = c->pts;
picref->video->pixel_aspect = c->pixel_aspect;
picref->video->pixel_aspect = c->frame.sample_aspect_ratio;
picref->video->interlaced = c->frame.interlaced_frame;
picref->video->top_field_first = c->frame.top_field_first;
picref->video->key_frame = c->frame.key_frame;

4
libavfilter/vsrc_buffer.h
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@ -31,10 +31,10 @@
#include "avfilter.h"
int av_vsrc_buffer_add_frame(AVFilterContext *buffer_filter, AVFrame *frame,
int64_t pts, AVRational pixel_aspect);
int64_t pts);
int av_vsrc_buffer_add_frame2(AVFilterContext *buffer_filter, AVFrame *frame,
int64_t pts, AVRational pixel_aspect, int width,
int64_t pts, int width,
int height, enum PixelFormat pix_fmt,
const char *sws_param);

4
libavfilter/vsrc_movie.c
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@ -247,8 +247,8 @@ static int movie_get_frame(AVFilterLink *outlink)
movie->frame->pkt_dts : movie->frame->pkt_pts;
movie->picref->pos = movie->frame->pkt_pos;
movie->picref->video->pixel_aspect = st->sample_aspect_ratio.num ?
st->sample_aspect_ratio : movie->codec_ctx->sample_aspect_ratio;
if (!movie->frame->sample_aspect_ratio.num)
movie->picref->video->pixel_aspect = st->sample_aspect_ratio;
movie->picref->video->interlaced = movie->frame->interlaced_frame;
movie->picref->video->top_field_first = movie->frame->top_field_first;
movie->picref->video->key_frame = movie->frame->key_frame;