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Code Issues Releases Activity

avfilter/vf_alphamerge: configure correct alpha mode

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This commit is contained in:
Niklas Haas
2025-02-19 20:39:58 +01:00
parent 2032820e90
commit ab1bc440f7
1 changed files with 7 additions and 0 deletions
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7
libavfilter/vf_alphamerge.c
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@@ -49,6 +49,7 @@ typedef struct AlphaMergeContext {
static int do_alphamerge(FFFrameSync *fs)
{
AVFilterContext *ctx = fs->parent;
AVFilterLink *outlink = ctx->outputs[0];
AlphaMergeContext *s = ctx->priv;
AVFrame *main_buf, *alpha_buf;
int ret;
@@ -56,6 +57,7 @@ static int do_alphamerge(FFFrameSync *fs)
ret = ff_framesync_dualinput_get_writable(fs, &main_buf, &alpha_buf);
if (ret < 0)
return ret;
main_buf->alpha_mode = outlink->alpha_mode;
if (!alpha_buf)
return ff_filter_frame(ctx->outputs[0], main_buf);
@@ -118,6 +120,11 @@ static int query_formats(const AVFilterContext *ctx,
if (ret < 0)
return ret;
ret = ff_formats_ref(ff_make_formats_list_singleton(AVALPHA_MODE_STRAIGHT),
&cfg_out[0]->alpha_modes);
if (ret < 0)
return ret;
return 0;
}