Rewrite colorspace negotiation.

Commited in SoC by Bobby Bingham on 2007-12-20 19:36:26

Originally committed as revision 12027 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavfilter/avfilter.c

@@ -96,18 +96,6 @@ int avfilter_link(AVFilterContext *src, unsigned srcpad,
     return 0;
 }
 
-static int common_format(int *fmts0, int *fmts1)
-{
-    int i, j;
-
-    for(i = 0; fmts0[i] != -1; i ++)
-        for(j = 0; fmts1[j] != -1; j ++)
-            if(fmts0[i] == fmts1[j])
-                return fmts0[i];
-
-    return -1;
-}
-
 int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
                            unsigned in, unsigned out)
 {
@@ -131,57 +119,11 @@ int avfilter_insert_filter(AVFilterLink *link, AVFilterContext *filt,
 
 int avfilter_config_link(AVFilterLink *link)
 {
-    int *fmts[3] = {NULL,NULL,NULL};
     int (*config_link)(AVFilterLink *);
-    int *(*query_formats)(AVFilterLink *link);
-
-    AVFilterContext *scale;
-    AVFilterLink *link2 = NULL;
 
     if(!link)
         return 0;
 
-    /* find a format both filters support */
-    if(!(query_formats = link_spad(link).query_formats))
-        query_formats = avfilter_default_query_output_formats;
-    fmts[0] = query_formats(link);
-    fmts[1] = link_dpad(link).query_formats(link);
-    if((link->format = common_format(fmts[0], fmts[1])) == -1) {
-        /* no common format found.  insert scale filter to convert */
-        if(!(scale = avfilter_open(&avfilter_vf_scale, NULL)))
-            goto format_done;
-        if(scale->filter->init(scale, NULL, NULL)) {
-            avfilter_destroy(scale);
-            goto format_done;
-        }
-        if(avfilter_insert_filter(link, scale, 0, 0))
-            goto format_done;
-        link2 = scale->outputs[0];
-
-        /* now try again to find working colorspaces.
-         * XXX: is it safe to assume that the scale filter always supports the
-         * same input and output colorspaces? */
-        fmts[2] = scale->input_pads[0].query_formats(link);
-        link->format  = common_format(fmts[0], fmts[2]);
-        link2->format = common_format(fmts[1], fmts[2]);
-    }
-
-format_done:
-    av_free(fmts[0]);
-    av_free(fmts[1]);
-    av_free(fmts[2]);
-    if(link->format == -1 || (link2 && link2->format == -1)) {
-        if(link2) {
-            link->dst    = link2->dst;
-            link->dstpad = link2->dstpad;
-            link->dst->inputs[link->dstpad] = link;
-            link->format = -1;
-            avfilter_destroy(scale);
-            av_free(link2);
-        }
-        return -1;
-    }
-
     if(!(config_link = link_spad(link).config_props))
         config_link  = avfilter_default_config_output_link;
     if(config_link(link))
@@ -192,18 +134,6 @@ format_done:
     if(config_link(link))
             return -1;
 
-    if(link2) {
-        if(!(config_link = link_spad(link2).config_props))
-            config_link  = avfilter_default_config_output_link;
-        if(config_link(link2))
-                return -1;
-
-        if(!(config_link = link_dpad(link2).config_props))
-            config_link  = avfilter_default_config_input_link;
-        if(config_link(link2))
-                return -1;
-    }
-
     return 0;
 }
 
@@ -439,18 +369,3 @@ int avfilter_init_filter(AVFilterContext *filter, const char *args, void *opaque
     return 0;
 }
 
-int *avfilter_make_format_list(int len, ...)
-{
-    int *ret, i;
-    va_list vl;
-
-    ret = av_malloc(sizeof(int) * (len + 1));
-    va_start(vl, len);
-    for(i = 0; i < len; i ++)
-        ret[i] = va_arg(vl, int);
-    va_end(vl);
-    ret[len] = -1;
-
-    return ret;
-}
-