#include "libavutil/pixfmt.h"
#include "avfilter.h"
#include "drawutils.h"
+#include "internal.h"
#include "formats.h"
#include "video.h"
return 0;
}
-static int draw_slice(AVFilterLink *inlink, int y0, int h, int slice_dir)
+static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *cur_buf)
{
AlphaExtractContext *extract = inlink->dst->priv;
- AVFilterBufferRef *cur_buf = inlink->cur_buf;
- AVFilterBufferRef *out_buf = inlink->dst->outputs[0]->out_buf;
+ AVFilterLink *outlink = inlink->dst->outputs[0];
+ AVFilterBufferRef *out_buf =
+ ff_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
+ int ret;
+
+ if (!out_buf) {
+ ret = AVERROR(ENOMEM);
+ goto end;
+ }
+ avfilter_copy_buffer_ref_props(out_buf, cur_buf);
if (extract->is_packed_rgb) {
int x, y;
- uint8_t *pin, *pout;
- for (y = y0; y < (y0 + h); y++) {
- pin = cur_buf->data[0] + y * cur_buf->linesize[0] + extract->rgba_map[A];
+ uint8_t *pcur, *pout;
+ for (y = 0; y < outlink->h; y++) {
+ pcur = cur_buf->data[0] + y * cur_buf->linesize[0] + extract->rgba_map[A];
pout = out_buf->data[0] + y * out_buf->linesize[0];
- for (x = 0; x < out_buf->video->w; x++) {
- *pout = *pin;
+ for (x = 0; x < outlink->w; x++) {
+ *pout = *pcur;
pout += 1;
- pin += 4;
+ pcur += 4;
}
}
- } else if (cur_buf->linesize[A] == out_buf->linesize[Y]) {
- const int linesize = cur_buf->linesize[A];
- memcpy(out_buf->data[Y] + y0 * linesize,
- cur_buf->data[A] + y0 * linesize,
- linesize * h);
} else {
- const int linesize = FFMIN(out_buf->linesize[Y], cur_buf->linesize[A]);
+ const int linesize = abs(FFMIN(out_buf->linesize[Y], cur_buf->linesize[A]));
int y;
- for (y = y0; y < (y0 + h); y++) {
+ for (y = 0; y < outlink->h; y++) {
memcpy(out_buf->data[Y] + y * out_buf->linesize[Y],
cur_buf->data[A] + y * cur_buf->linesize[A],
linesize);
}
}
- return ff_draw_slice(inlink->dst->outputs[0], y0, h, slice_dir);
+
+ ret = ff_filter_frame(outlink, out_buf);
+
+end:
+ avfilter_unref_buffer(cur_buf);
+ return ret;
}
static const AVFilterPad alphaextract_inputs[] = {
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_input,
- .draw_slice = draw_slice,
+ .filter_frame = filter_frame,
.min_perms = AV_PERM_READ,
},
{ NULL }