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Code Issues Releases Activity

avfilter/overlay_vaapi: precalculate blend_state, enable pixel alpha

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Signed-off-by: softworkz <softworkz@hotmail.com>
This commit is contained in:
softworkz
2022-10-31 06:20:04 +00:00
committed by Haihao Xiang
parent 916447bf4c
commit ff075f5abb
1 changed files with 42 additions and 2 deletions
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44
libavfilter/vf_overlay_vaapi.c
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@@ -36,6 +36,8 @@ typedef struct OverlayVAAPIContext {
int overlay_ow; int overlay_ow;
int overlay_oh; int overlay_oh;
float alpha; float alpha;
unsigned int blend_flags;
float blend_alpha;
} OverlayVAAPIContext; } OverlayVAAPIContext;
static int overlay_vaapi_build_filter_params(AVFilterContext *avctx) static int overlay_vaapi_build_filter_params(AVFilterContext *avctx)
@@ -246,8 +248,8 @@ static int overlay_vaapi_blend(FFFrameSync *fs)
memcpy(&subpic_params, &params, sizeof(subpic_params)); memcpy(&subpic_params, &params, sizeof(subpic_params));
blend_state.flags = VA_BLEND_GLOBAL_ALPHA; blend_state.flags = ctx->blend_flags;
blend_state.global_alpha = ctx->alpha; blend_state.global_alpha = ctx->blend_alpha;
subpic_params.blend_state = &blend_state; subpic_params.blend_state = &blend_state;
subpic_params.surface = (VASurfaceID)(uintptr_t)input_overlay->data[3]; subpic_params.surface = (VASurfaceID)(uintptr_t)input_overlay->data[3];
@@ -269,6 +271,43 @@ fail:
return err; return err;
} }
static int have_alpha_planar(AVFilterLink *link)
{
enum AVPixelFormat pix_fmt = link->format;
const AVPixFmtDescriptor *desc;
AVHWFramesContext *fctx;
if (link->format == AV_PIX_FMT_VAAPI) {
fctx = (AVHWFramesContext *)link->hw_frames_ctx->data;
pix_fmt = fctx->sw_format;
}
desc = av_pix_fmt_desc_get(pix_fmt);
if (!desc)
return 0;
return !!(desc->flags & AV_PIX_FMT_FLAG_ALPHA);
}
static int overlay_vaapi_config_input_overlay(AVFilterLink *inlink)
{
AVFilterContext *avctx = inlink->dst;
OverlayVAAPIContext *ctx = avctx->priv;
ctx->blend_flags = 0;
ctx->blend_alpha = 1.0f;
if (ctx->alpha < 1.0f) {
ctx->blend_flags |= VA_BLEND_GLOBAL_ALPHA;
ctx->blend_alpha = ctx->alpha;
}
if (have_alpha_planar(inlink))
ctx->blend_flags |= VA_BLEND_PREMULTIPLIED_ALPHA;
return 0;
}
static int overlay_vaapi_config_output(AVFilterLink *outlink) static int overlay_vaapi_config_output(AVFilterLink *outlink)
{ {
AVFilterContext *avctx = outlink->src; AVFilterContext *avctx = outlink->src;
@@ -353,6 +392,7 @@ static const AVFilterPad overlay_vaapi_inputs[] = {
{ {
.name = "overlay", .name = "overlay",
.type = AVMEDIA_TYPE_VIDEO, .type = AVMEDIA_TYPE_VIDEO,
.config_props = overlay_vaapi_config_input_overlay,
}, },
}; };