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Make the scale filter set in the input and output links only the

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respective pixel formats effectively supported by libswscale.

Originally committed as revision 21105 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini 2010-01-08 23:48:32 +00:00
parent a7ac9c2f62
commit 27d8f6b660
1 changed files with 16 additions and 2 deletions
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18
libavfilter/vf_scale.c
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@ -69,13 +69,27 @@ static av_cold void uninit(AVFilterContext *ctx)
static int query_formats(AVFilterContext *ctx)
{
AVFilterFormats *formats;
enum PixelFormat pix_fmt;
int ret;
if (ctx->inputs[0]) {
formats = avfilter_all_colorspaces();
formats = NULL;
for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
if ( sws_isSupportedInput(pix_fmt)
&& (ret = avfilter_add_colorspace(&formats, pix_fmt)) < 0) {
avfilter_formats_unref(&formats);
return ret;
}
avfilter_formats_ref(formats, &ctx->inputs[0]->out_formats);
}
if (ctx->outputs[0]) {
formats = avfilter_all_colorspaces();
formats = NULL;
for (pix_fmt = 0; pix_fmt < PIX_FMT_NB; pix_fmt++)
if ( sws_isSupportedOutput(pix_fmt)
&& (ret = avfilter_add_colorspace(&formats, pix_fmt)) < 0) {
avfilter_formats_unref(&formats);
return ret;
}
avfilter_formats_ref(formats, &ctx->outputs[0]->in_formats);
}