virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

avfilter/vf_yadif: reallocate frames if strides differ

Browse Source 
Fixes Ticket2896

An alternative to this would be to change the code to support any
stride.
The condition of differing strides should be rare.
If theres no speedloss supporting any stride would be better

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-03 04:40:04 +02:00
parent cc84f30402
commit 92b7e7b318
1 changed files with 37 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
libavfilter/vf_yadif.c
View File

@ -22,6 +22,7 @@
#include "libavutil/common.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/imgutils.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
@ -285,6 +286,29 @@ static int return_frame(AVFilterContext *ctx, int is_second)
return ret;
}
static int checkstride(YADIFContext *yadif, const AVFrame *a, const AVFrame *b)
{
int i;
for (i = 0; i < yadif->csp->nb_components; i++)
if (a->linesize[i] != b->linesize[i])
return 1;
return 0;
}
static void fixstride(AVFilterLink *link, AVFrame *f)
{
AVFrame *dst = ff_default_get_video_buffer(link, f->width, f->height);
if(!dst)
return;
av_frame_copy_props(dst, f);
av_image_copy(dst->data, dst->linesize,
f->data, f->linesize,
dst->format, dst->width, dst->height);
av_frame_unref(f);
av_frame_move_ref(f, dst);
av_frame_free(&dst);
}
static int filter_frame(AVFilterLink *link, AVFrame *frame)
{
AVFilterContext *ctx = link->dst;
@ -304,6 +328,19 @@ static int filter_frame(AVFilterLink *link, AVFrame *frame)
if (!yadif->cur)
return 0;
if (checkstride(yadif, yadif->next, yadif->cur)) {
av_log(ctx, AV_LOG_VERBOSE, "Reallocating frame due to differing stride\n");
fixstride(link, yadif->next);
}
if (checkstride(yadif, yadif->next, yadif->cur))
fixstride(link, yadif->cur);
if (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))
fixstride(link, yadif->prev);
if (checkstride(yadif, yadif->next, yadif->cur) || (yadif->prev && checkstride(yadif, yadif->next, yadif->prev))) {
av_log(ctx, AV_LOG_ERROR, "Failed to reallocate frame\n");
return -1;
}
if ((yadif->deint && !yadif->cur->interlaced_frame) || ctx->is_disabled) {
yadif->out = av_frame_clone(yadif->cur);
if (!yadif->out)