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yadif: Improve pts accuracy.

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Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Robert Nagy 2012-05-12 19:40:41 +02:00 committed by Anton Khirnov
parent 7c6d240665
commit 7dd56d411e
1 changed files with 21 additions and 6 deletions
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27
libavfilter/vf_yadif.c
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@ -218,11 +218,11 @@ static void return_frame(AVFilterContext *ctx, int is_second)
filter(ctx, yadif->out, tff ^ !is_second, tff);
if (is_second) {
if (yadif->next->pts != AV_NOPTS_VALUE &&
yadif->cur->pts != AV_NOPTS_VALUE) {
yadif->out->pts =
(yadif->next->pts&yadif->cur->pts) +
((yadif->next->pts^yadif->cur->pts)>>1);
int64_t cur_pts = yadif->cur->pts;
int64_t next_pts = yadif->next->pts;
if (next_pts != AV_NOPTS_VALUE && cur_pts != AV_NOPTS_VALUE) {
yadif->out->pts = cur_pts + next_pts;
} else {
yadif->out->pts = AV_NOPTS_VALUE;
}
@ -255,6 +255,8 @@ static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
yadif->out = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
avfilter_unref_buffer(yadif->prev);
yadif->prev = NULL;
if (yadif->out->pts != AV_NOPTS_VALUE)
yadif->out->pts *= 2;
avfilter_start_frame(ctx->outputs[0], yadif->out);
return;
}
@ -267,6 +269,8 @@ static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
avfilter_copy_buffer_ref_props(yadif->out, yadif->cur);
yadif->out->video->interlaced = 0;
if (yadif->out->pts != AV_NOPTS_VALUE)
yadif->out->pts *= 2;
avfilter_start_frame(ctx->outputs[0], yadif->out);
}
@ -400,6 +404,16 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { }
static int config_props(AVFilterLink *link)
{
link->time_base.num = link->src->inputs[0]->time_base.num;
link->time_base.den = link->src->inputs[0]->time_base.den * 2;
link->w = link->src->inputs[0]->w;
link->h = link->src->inputs[0]->h;
return 0;
}
AVFilter avfilter_vf_yadif = {
.name = "yadif",
.description = NULL_IF_CONFIG_SMALL("Deinterlace the input image"),
@ -420,6 +434,7 @@ AVFilter avfilter_vf_yadif = {
.outputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.poll_frame = poll_frame,
.request_frame = request_frame, },
.request_frame = request_frame,
.config_props = config_props, },
{ .name = NULL}},
};