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vf_yadif: fix permissions. 

Require AV_PERM_PRESERVE and leave harmless permissions
alone for the next filter.
This commit is contained in:
Nicolas George 2012-08-14 18:51:05 +02:00
parent 71adb74059
commit 9341bbfc51
1 changed files with 4 additions and 4 deletions
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8
libavfilter/vf_yadif.c
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@ -240,7 +240,7 @@ static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
return 0;
if (yadif->auto_enable && !yadif->cur->video->interlaced) {
yadif->out = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
yadif->out = avfilter_ref_buffer(yadif->cur, ~AV_PERM_WRITE);
if (!yadif->out)
return AVERROR(ENOMEM);
@ -251,7 +251,7 @@ static int start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
}
if (!yadif->prev &&
!(yadif->prev = avfilter_ref_buffer(yadif->cur, AV_PERM_READ)))
!(yadif->prev = avfilter_ref_buffer(yadif->cur, ~AV_PERM_WRITE)))
return AVERROR(ENOMEM);
yadif->out = ff_get_video_buffer(ctx->outputs[0], AV_PERM_WRITE | AV_PERM_PRESERVE |
@ -304,7 +304,7 @@ static int request_frame(AVFilterLink *link)
ret = ff_request_frame(link->src->inputs[0]);
if (ret == AVERROR_EOF && yadif->cur) {
AVFilterBufferRef *next = avfilter_ref_buffer(yadif->next, AV_PERM_READ);
AVFilterBufferRef *next = avfilter_ref_buffer(yadif->next, ~AV_PERM_WRITE);
if (!next)
return AVERROR(ENOMEM);
@ -445,7 +445,7 @@ AVFilter avfilter_vf_yadif = {
.start_frame = start_frame,
.draw_slice = null_draw_slice,
.end_frame = end_frame,
.rej_perms = AV_PERM_REUSE2, },
.min_perms = AV_PERM_PRESERVE, },
{ .name = NULL}},
.outputs = (const AVFilterPad[]) {{ .name = "default",