static void end_frame(AVFilterLink *link)
{
TransContext *trans = link->dst->priv;
AVFilterPicRef *in = link->cur_pic;
AVFilterPicRef *out = link->dst->outputs[0]->outpic;
AVFilterPicRef *pic = link->cur_pic;
AVFilterLink *output = link->dst->outputs[0];
int i, j, plane;
/* luma plane */
for(i = 0; i < pic->h; i ++)
for(j = 0; j < pic->w; j ++)
*(out->data[0] + j *out->linesize[0] + i) =
*(in->data[0]+ i * in->linesize[0] + j);
/* chroma planes */
for(plane = 1; plane < 3; plane ++) {
for(i = 0; i < pic->h >> trans->vsub; i++) {
for(j = 0; j < pic->w >> trans->hsub; j++)
*(out->data[plane] + j *out->linesize[plane] + i) =
*(in->data[plane]+ i * in->linesize[plane] + j);
}
}
avfilter_unref_pic(in);
avfilter_draw_slice(output, 0, out->h, 1);
avfilter_end_frame(output);
avfilter_unref_pic(out);
}
static int request_frame(AVFilterLink *link)
{
BufferSourceContext *c = link->src->priv;
AVFilterPicRef *picref;
if (!c->has_frame) {
av_log(link->src, AV_LOG_ERROR,
"request_frame() called with no available frame!\n");
//return -1;
}
/* This picture will be needed unmodified later for decoding the next
* frame */
picref = avfilter_get_video_buffer(link, AV_PERM_WRITE | AV_PERM_PRESERVE |
AV_PERM_REUSE2,
link->w, link->h);
av_picture_copy((AVPicture *)&picref->data, (AVPicture *)&c->frame,
picref->pic->format, link->w, link->h);
picref->pts = c->pts;
picref->pixel_aspect = c->pixel_aspect;
picref->interlaced = c->frame.interlaced_frame;
picref->top_field_first = c->frame.top_field_first;
avfilter_start_frame(link, avfilter_ref_pic(picref, ~0));
avfilter_draw_slice(link, 0, link->h, 1);
avfilter_end_frame(link);
avfilter_unref_pic(picref);
c->has_frame = 0;
return 0;
}
void avfilter_default_end_frame(AVFilterLink *link)
{
AVFilterLink *out = NULL;
if(link->dst->output_count)
out = link->dst->outputs[0];
avfilter_unref_pic(link->cur_pic);
link->cur_pic = NULL;
if(out) {
if(out->outpic) {
avfilter_unref_pic(out->outpic);
out->outpic = NULL;
}
avfilter_end_frame(out);
}
}
static int request_frame(AVFilterLink *link)
{
FPSContext *fps = link->src->priv;
if (fps->videoend)
return -1;
if (!fps->has_frame) // support for filtering without poll_frame usage
while(!fps->pic || fps->pic->pts < fps->pts)
if(avfilter_request_frame(link->src->inputs[0]))
return -1;
fps->has_frame=0;
avfilter_start_frame(link, avfilter_ref_pic(fps->pic, ~AV_PERM_WRITE));
avfilter_draw_slice (link, 0, fps->pic->h, 1);
avfilter_end_frame (link);
avfilter_unref_pic(fps->pic);
fps->pic = NULL;
fps->pts += fps->timebase;
return 0;
}
static void start_frame(AVFilterLink *link, AVFilterPicRef *picref)
{
FPSContext *fps = link->dst->priv;
if(fps->pic) avfilter_unref_pic(fps->pic);
fps->pic = picref;
}
static av_cold void uninit(AVFilterContext *ctx)
{
FPSContext *fps = ctx->priv;
if(fps->pic) avfilter_unref_pic(fps->pic);
}
