static int color_request_frame(AVFilterLink *link)
{
ColorContext *color = link->src->priv;
AVFrame *frame = ff_get_video_buffer(link, color->w, color->h);
if (!frame)
return AVERROR(ENOMEM);
frame->sample_aspect_ratio = (AVRational) {1, 1};
frame->pts = color->pts++;
ff_draw_rectangle(frame->data, frame->linesize,
color->line, color->line_step, color->hsub, color->vsub,
0, 0, color->w, color->h);
return ff_filter_frame(link, frame);
}
static int color_request_frame(AVFilterLink *link)
{
ColorContext *color = link->src->priv;
AVFilterBufferRef *picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, color->w, color->h);
picref->video->pixel_aspect = (AVRational) {1, 1};
picref->pts = av_rescale_q(color->pts++, color->time_base, AV_TIME_BASE_Q);
picref->pos = 0;
avfilter_start_frame(link, avfilter_ref_buffer(picref, ~0));
ff_draw_rectangle(picref->data, picref->linesize,
color->line, color->line_step, color->hsub, color->vsub,
0, 0, color->w, color->h);
avfilter_draw_slice(link, 0, color->h, 1);
avfilter_end_frame(link);
avfilter_unref_buffer(picref);
return 0;
}
static int color_request_frame(AVFilterLink *link)
{
ColorContext *color = link->src->priv;
AVFilterBufferRef *picref = ff_get_video_buffer(link, AV_PERM_WRITE, color->w, color->h);
AVFilterBufferRef *buf_out;
int ret;
if (!picref)
return AVERROR(ENOMEM);
picref->video->pixel_aspect = (AVRational) {1, 1};
picref->pts = color->pts++;
picref->pos = -1;
buf_out = avfilter_ref_buffer(picref, ~0);
if (!buf_out) {
ret = AVERROR(ENOMEM);
goto fail;
}
ret = ff_start_frame(link, buf_out);
if (ret < 0)
goto fail;
ff_draw_rectangle(picref->data, picref->linesize,
color->line, color->line_step, color->hsub, color->vsub,
0, 0, color->w, color->h);
ret = ff_draw_slice(link, 0, color->h, 1);
if (ret < 0)
goto fail;
ret = ff_end_frame(link);
fail:
avfilter_unref_buffer(picref);
return ret;
}
