#include <string.h>
#include "libavutil/imgutils.h"
+#include "libavutil/opt.h"
#include "libavutil/pixfmt.h"
#include "avfilter.h"
#include "drawutils.h"
enum { Y, U, V, A };
typedef struct AlphaMergeContext {
+ const AVClass *class;
+
int is_packed_rgb;
uint8_t rgba_map[4];
AVFrame *main_frame;
static int config_input_main(AVFilterLink *inlink)
{
- AlphaMergeContext *merge = inlink->dst->priv;
- merge->is_packed_rgb =
- ff_fill_rgba_map(merge->rgba_map, inlink->format) >= 0 &&
+ AlphaMergeContext *s = inlink->dst->priv;
+ s->is_packed_rgb =
+ ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0 &&
inlink->format != AV_PIX_FMT_GBRAP;
return 0;
}
AVFrame *main_buf,
AVFrame *alpha_buf)
{
- AlphaMergeContext *merge = ctx->priv;
+ AlphaMergeContext *s = ctx->priv;
int h = main_buf->height;
- if (merge->is_packed_rgb) {
+ if (s->is_packed_rgb) {
int x, y;
uint8_t *pin, *pout;
for (y = 0; y < h; y++) {
pin = alpha_buf->data[0] + y * alpha_buf->linesize[0];
- pout = main_buf->data[0] + y * main_buf->linesize[0] + merge->rgba_map[A];
+ pout = main_buf->data[0] + y * main_buf->linesize[0] + s->rgba_map[A];
for (x = 0; x < main_buf->width; x++) {
*pout = *pin;
pin += 1;
}
if (s->main_frame && s->alpha_frame) {
- draw_frame(ctx, s->main_frame, s->alpha_frame);
+ if (!ctx->is_disabled)
+ draw_frame(ctx, s->main_frame, s->alpha_frame);
ret = ff_filter_frame(outlink, s->main_frame);
av_frame_free(&s->alpha_frame);
s->main_frame = NULL;
{ NULL }
};
+static const AVOption alphamerge_options[] = {
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(alphamerge);
+
AVFilter ff_vf_alphamerge = {
.name = "alphamerge",
.description = NULL_IF_CONFIG_SMALL("Copy the luma value of the second "
"input into the alpha channel of the first input."),
.priv_size = sizeof(AlphaMergeContext),
+ .priv_class = &alphamerge_class,
.query_formats = query_formats,
.inputs = alphamerge_inputs,
.outputs = alphamerge_outputs,
.activate = activate,
+ .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL,
};