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avfiltergraph: More advanced heuristic to select colorspace. 

This fixes regressions caused by switching from ffmpegs system to avfilters.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-17 03:18:51 +02:00
parent 128fa1295c
commit 0d115d7799
1 changed files with 31 additions and 7 deletions
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38
libavfilter/avfiltergraph.c
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@ -24,6 +24,7 @@
#include <string.h>
#include "libavutil/audioconvert.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "avfiltergraph.h"
#include "internal.h"
@ -252,13 +253,26 @@ static int query_formats(AVFilterGraph *graph, AVClass *log_ctx)
return 0;
}
static void pick_format(AVFilterLink *link)
static void pick_format(AVFilterLink *link, AVFilterLink *ref)
{
if (!link || !link->in_formats)
return;
if (link->type == AVMEDIA_TYPE_VIDEO) {
if(ref && ref->type == AVMEDIA_TYPE_VIDEO){
int has_alpha= av_pix_fmt_descriptors[ref->format].nb_components % 2 == 0;
enum PixelFormat best= PIX_FMT_NONE;
int i;
for (i=0; i<link->in_formats->format_count; i++) {
enum PixelFormat p = link->in_formats->formats[i];
best= avcodec_find_best_pix_fmt2(best, p, ref->format, has_alpha, NULL);
}
link->format = best;
}else
link->format = link->in_formats->formats[0];
}
link->in_formats->format_count = 1;
link->format = link->in_formats->formats[0];
avfilter_formats_unref(&link->in_formats);
avfilter_formats_unref(&link->out_formats);
@ -324,11 +338,21 @@ static void pick_formats(AVFilterGraph *graph)
for (i = 0; i < graph->filter_count; i++) {
AVFilterContext *filter = graph->filters[i];
for (j = 0; j < filter->input_count; j++)
pick_format(filter->inputs[j]);
for (j = 0; j < filter->output_count; j++)
pick_format(filter->outputs[j]);
if (filter->input_count && filter->output_count) {
for (j = 0; j < filter->input_count; j++)
pick_format(filter->inputs[j], NULL);
for (j = 0; j < filter->output_count; j++)
pick_format(filter->outputs[j], filter->inputs[0]);
}
}
for (i = 0; i < graph->filter_count; i++) {
AVFilterContext *filter = graph->filters[i];
if (!(filter->input_count && filter->output_count)) {
for (j = 0; j < filter->input_count; j++)
pick_format(filter->inputs[j], NULL);
for (j = 0; j < filter->output_count; j++)
pick_format(filter->outputs[j], NULL);
}
}
}