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vf_scale: use sws_init_context()

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-07-14 05:19:46 +02:00
parent 353f302250
commit 37ded53037
1 changed files with 26 additions and 16 deletions
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42
libavfilter/vf_scale.c
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@ -259,25 +259,35 @@ static int config_props(AVFilterLink *outlink)
if (scale->sws)
sws_freeContext(scale->sws);
if (scale->isws[0])
sws_freeContext(scale->isws[0]);
if (scale->isws[1])
sws_freeContext(scale->isws[1]);
scale->isws[0] = scale->isws[1] = scale->sws = NULL;
if (inlink->w == outlink->w && inlink->h == outlink->h &&
inlink->format == outlink->format)
scale->sws = NULL;
;
else {
scale->sws = sws_getContext(inlink ->w, inlink ->h, inlink ->format,
outlink->w, outlink->h, outfmt,
scale->flags, NULL, NULL, NULL);
if (scale->isws[0])
sws_freeContext(scale->isws[0]);
scale->isws[0] = sws_getContext(inlink ->w, inlink ->h/2, inlink ->format,
outlink->w, outlink->h/2, outfmt,
scale->flags, NULL, NULL, NULL);
if (scale->isws[1])
sws_freeContext(scale->isws[1]);
scale->isws[1] = sws_getContext(inlink ->w, inlink ->h/2, inlink ->format,
outlink->w, outlink->h/2, outfmt,
scale->flags, NULL, NULL, NULL);
if (!scale->sws || !scale->isws[0] || !scale->isws[1])
return AVERROR(EINVAL);
struct SwsContext **swscs[3] = {&scale->sws, &scale->isws[0], &scale->isws[1]};
int i;
for (i = 0; i < 3; i++) {
struct SwsContext **s = swscs[i];
*s = sws_alloc_context();
if (!*s)
return AVERROR(ENOMEM);
av_opt_set_int(*s, "srcw", inlink ->w, 0);
av_opt_set_int(*s, "srch", inlink ->h >> !!i, 0);
av_opt_set_int(*s, "src_format", inlink->format, 0);
av_opt_set_int(*s, "dstw", outlink->w, 0);
av_opt_set_int(*s, "dsth", outlink->h >> !!i, 0);
av_opt_set_int(*s, "dst_format", outfmt, 0);
av_opt_set_int(*s, "sws_flags", scale->flags, 0);
if ((ret = sws_init_context(*s, NULL, NULL)) < 0)
return ret;
}
}
if (inlink->sample_aspect_ratio.num){