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Separate the process of creating links between filters from that of configuring 

the links.

Commited in SoC by Bobby Bingham on 2007-08-07 21:02:18

Originally committed as revision 11998 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-02-15 21:37:18 +00:00
parent 78b0c0bbbf
commit 01942f1d90
1 changed files with 24 additions and 16 deletions
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40
libavfilter/avfilter.c
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@ -51,7 +51,6 @@ int avfilter_link(AVFilterContext *src, unsigned srcpad,
AVFilterContext *dst, unsigned dstpad)
{
AVFilterLink *link;
int *fmts[2], i, j;
if(src->output_count <= srcpad || dst->input_count <= dstpad ||
src->outputs[srcpad] || dst->inputs[dstpad])
@ -65,14 +64,26 @@ int avfilter_link(AVFilterContext *src, unsigned srcpad,
link->srcpad = srcpad;
link->dstpad = dstpad;
link->cur_pic = NULL;
link->format = -1;
return 0;
}
int avfilter_config_link(AVFilterLink *link)
{
int *fmts[2], i, j;
int (*config_link)(AVFilterLink *);
if(!link)
return 0;
/* find a format both filters support - TODO: auto-insert conversion filter */
link->format = -1;
if(src->output_pads[srcpad].query_formats)
fmts[0] = src->output_pads[srcpad].query_formats(link);
if(link->src->output_pads[link->srcpad].query_formats)
fmts[0] = link->src->output_pads[link->srcpad].query_formats(link);
else
fmts[0] = avfilter_default_query_output_formats(link);
fmts[1] = dst->input_pads[dstpad].query_formats(link);
fmts[1] = link->dst->input_pads[link->dstpad].query_formats(link);
for(i = 0; fmts[0][i] != -1; i ++)
for(j = 0; fmts[1][j] != -1; j ++)
if(fmts[0][i] == fmts[1][j]) {
@ -83,21 +94,18 @@ int avfilter_link(AVFilterContext *src, unsigned srcpad,
format_done:
av_free(fmts[0]);
av_free(fmts[1]);
if(link->format == -1) {
/* failed to find a format. fail at creating the link */
av_free(link);
src->outputs[srcpad] = NULL;
dst->inputs[dstpad] = NULL;
if(link->format == -1)
return -1;
}
if (src->output_pads[srcpad].config_props)
src->output_pads[srcpad].config_props(link);
else
avfilter_default_config_output_link(link);
if(!(config_link = link->src->output_pads[link->srcpad].config_props))
config_link = avfilter_default_config_output_link;
if(config_link(link))
return -1;
if (dst->input_pads[dstpad].config_props)
dst->input_pads[dstpad].config_props(link);
if(!(config_link = link->dst->input_pads[link->dstpad].config_props))
config_link = avfilter_default_config_input_link;
if(config_link(link))
return -1;
return 0;
}