static int request_frame(AVFilterLink *outlink)
{
MPTestContext *test = outlink->src->priv;
AVFrame *picref;
int w = WIDTH, h = HEIGHT,
cw = FF_CEIL_RSHIFT(w, test->hsub), ch = FF_CEIL_RSHIFT(h, test->vsub);
unsigned int frame = outlink->frame_count;
enum test_type tt = test->test;
int i;
if (test->max_pts >= 0 && test->pts > test->max_pts)
return AVERROR_EOF;
picref = ff_get_video_buffer(outlink, w, h);
if (!picref)
return AVERROR(ENOMEM);
picref->pts = test->pts++;
// clean image
for (i = 0; i < h; i++)
memset(picref->data[0] + i*picref->linesize[0], 0, w);
for (i = 0; i < ch; i++) {
memset(picref->data[1] + i*picref->linesize[1], 128, cw);
memset(picref->data[2] + i*picref->linesize[2], 128, cw);
}
if (tt == TEST_ALL && frame%30) /* draw a black frame at the beginning of each test */
tt = (frame/30)%(TEST_NB-1);
switch (tt) {
case TEST_DC_LUMA: dc_test(picref->data[0], picref->linesize[0], 256, 256, frame%30); break;
case TEST_DC_CHROMA: dc_test(picref->data[1], picref->linesize[1], 256, 256, frame%30); break;
case TEST_FREQ_LUMA: freq_test(picref->data[0], picref->linesize[0], frame%30); break;
case TEST_FREQ_CHROMA: freq_test(picref->data[1], picref->linesize[1], frame%30); break;
case TEST_AMP_LUMA: amp_test(picref->data[0], picref->linesize[0], frame%30); break;
case TEST_AMP_CHROMA: amp_test(picref->data[1], picref->linesize[1], frame%30); break;
case TEST_CBP: cbp_test(picref->data , picref->linesize , frame%30); break;
case TEST_MV: mv_test(picref->data[0], picref->linesize[0], frame%30); break;
case TEST_RING1: ring1_test(picref->data[0], picref->linesize[0], frame%30); break;
case TEST_RING2: ring2_test(picref->data[0], picref->linesize[0], frame%30); break;
}
return ff_filter_frame(outlink, picref);
}
int sc_main(int argc,char *argv[])
{
DecoderTest dc_test("dc_test");
sc_start(1000,SC_PS);
return 0;
}