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Add AVFilterPicRef.pos field and make libavfilter propagate stream 

byte position information, as stored in the pkt.pos, through the
filterchain.

Note that the pos field is added *non* at the end of the
AVFilterPicRef struct, thus breaking ABI compatibility, which is
allowed as the API is still considered non-stable.

Originally committed as revision 22506 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-03-13 11:27:05 +00:00
parent ec7ab610d5
commit 5bb5c1dc86
3 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavfilter/avfilter.c
View File

@ -171,11 +171,12 @@ int avfilter_config_links(AVFilterContext *filter)
static void dprintf_picref(void *ctx, AVFilterPicRef *picref, int end)
{
dprintf(ctx,
"picref[%p data[%p, %p, %p, %p] linesize[%d, %d, %d, %d] pts:%"PRId64" a:%d/%d s:%dx%d]%s",
"picref[%p data[%p, %p, %p, %p] linesize[%d, %d, %d, %d] pts:%"PRId64" pos:%"PRId64" a:%d/%d s:%dx%d]%s",
picref,
picref->data [0], picref->data [1], picref->data [2], picref->data [3],
picref->linesize[0], picref->linesize[1], picref->linesize[2], picref->linesize[3],
picref->pts, picref->pixel_aspect.num, picref->pixel_aspect.den, picref->w, picref->h,
picref->pts, picref->pos,
picref->pixel_aspect.num, picref->pixel_aspect.den, picref->w, picref->h,
end ? "\n" : "");
}
@ -263,6 +264,7 @@ void avfilter_start_frame(AVFilterLink *link, AVFilterPicRef *picref)
link->cur_pic = avfilter_default_get_video_buffer(link, dst->min_perms, link->w, link->h);
link->srcpic = picref;
link->cur_pic->pts = link->srcpic->pts;
link->cur_pic->pos = link->srcpic->pos;
link->cur_pic->pixel_aspect = link->srcpic->pixel_aspect;
}
else

1
libavfilter/avfilter.h
View File

@ -105,6 +105,7 @@ typedef struct AVFilterPicRef
int h; ///< image height
int64_t pts; ///< presentation timestamp in units of 1/AV_TIME_BASE
int64_t pos; ///< byte position in stream, -1 if unknown
AVRational pixel_aspect; ///< pixel aspect ratio

1
libavfilter/defaults.c
View File

@ -74,6 +74,7 @@ void avfilter_default_start_frame(AVFilterLink *link, AVFilterPicRef *picref)
if(out) {
out->outpic = avfilter_get_video_buffer(out, AV_PERM_WRITE, out->w, out->h);
out->outpic->pts = picref->pts;
out->outpic->pos = picref->pos;
out->outpic->pixel_aspect = picref->pixel_aspect;
avfilter_start_frame(out, avfilter_ref_pic(out->outpic, ~0));
}