Commit 102fb0e3 authored by Vitor Sessak's avatar Vitor Sessak

Provide some default functions to simplify the implementation of common one

input one output video filters.

Commited in SoC by Bobby Bingham on 2007-07-06 15:25:52

Originally committed as revision 11976 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent ba6b9035
......@@ -88,6 +88,25 @@ void avfilter_unref_pic(AVFilterPicRef *ref)
av_free(ref);
}
/**
* default config_link() implementation for output video links to simplify
* the implementation of one input one output video filters */
static int default_config_output_link(AVFilterLink *link)
{
link->w = link->src->inputs[0]->w;
link->h = link->src->inputs[0]->h;
return 0;
}
/**
* default query_formats() implementation for output video links to simplify
* the implementation of one input one output video filters */
static int *default_query_output_formats(AVFilterLink *link)
{
return avfilter_make_format_list(1, link->src->inputs[0]->format);
}
int avfilter_link(AVFilterContext *src, unsigned srcpad,
AVFilterContext *dst, unsigned dstpad)
{
......@@ -107,7 +126,10 @@ int avfilter_link(AVFilterContext *src, unsigned srcpad,
link->cur_pic = NULL;
/* find a format both filters support - TODO: auto-insert conversion filter */
fmts[0] = src->filter->outputs[srcpad].query_formats(link);
if(src->filter->outputs[srcpad].query_formats)
fmts[0] = src->filter->outputs[srcpad].query_formats(link);
else
fmts[0] = default_query_output_formats(link);
fmts[1] = dst->filter-> inputs[dstpad].query_formats(link);
for(i = 0; fmts[0][i] != -1; i ++)
for(j = 0; fmts[1][j] != -1; j ++)
......@@ -127,8 +149,14 @@ format_done:
return -1;
}
src->filter->outputs[srcpad].config_props(link);
dst->filter-> inputs[dstpad].config_props(link);
if (src->filter->outputs[srcpad].config_props)
src->filter->outputs[srcpad].config_props(link);
else
default_config_output_link(link);
if (dst->filter->inputs[dstpad].config_props)
dst->filter->inputs[dstpad].config_props(link);
return 0;
}
......
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