* Copyright (c) 2008 Vitor Sessak
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
return av_mallocz(sizeof(AVFilterGraph));
}
-void avfilter_graph_free(AVFilterGraph *graph)
+void avfilter_graph_free(AVFilterGraph **graph)
{
- for(; graph->filter_count > 0; graph->filter_count --)
- avfilter_free(graph->filters[graph->filter_count - 1]);
- av_freep(&graph->scale_sws_opts);
- av_freep(&graph->filters);
+ if (!*graph)
+ return;
+ for (; (*graph)->filter_count > 0; (*graph)->filter_count--)
+ avfilter_free((*graph)->filters[(*graph)->filter_count - 1]);
+ av_freep(&(*graph)->scale_sws_opts);
+ av_freep(&(*graph)->filters);
+ av_freep(graph);
}
int avfilter_graph_add_filter(AVFilterGraph *graph, AVFilterContext *filter)
AVFilterContext *filt;
int i, j;
- for (i=0; i < graph->filter_count; i++) {
+ for (i = 0; i < graph->filter_count; i++) {
filt = graph->filters[i];
for (j = 0; j < filt->input_count; j++) {
av_log(log_ctx, AV_LOG_ERROR,
"Input pad \"%s\" for the filter \"%s\" of type \"%s\" not connected to any source\n",
filt->input_pads[j].name, filt->name, filt->filter->name);
- return -1;
+ return AVERROR(EINVAL);
}
}
av_log(log_ctx, AV_LOG_ERROR,
"Output pad \"%s\" for the filter \"%s\" of type \"%s\" not connected to any destination\n",
filt->output_pads[j].name, filt->name, filt->filter->name);
- return -1;
+ return AVERROR(EINVAL);
}
}
}
{
int i;
- for(i = 0; i < graph->filter_count; i ++)
- if(graph->filters[i]->name && !strcmp(name, graph->filters[i]->name))
+ for (i = 0; i < graph->filter_count; i++)
+ if (graph->filters[i]->name && !strcmp(name, graph->filters[i]->name))
return graph->filters[i];
return NULL;
char inst_name[30];
/* ask all the sub-filters for their supported media formats */
- for(i = 0; i < graph->filter_count; i ++) {
- if(graph->filters[i]->filter->query_formats)
+ for (i = 0; i < graph->filter_count; i++) {
+ if (graph->filters[i]->filter->query_formats)
graph->filters[i]->filter->query_formats(graph->filters[i]);
else
avfilter_default_query_formats(graph->filters[i]);
}
/* go through and merge as many format lists as possible */
- for(i = 0; i < graph->filter_count; i ++) {
+ for (i = 0; i < graph->filter_count; i++) {
AVFilterContext *filter = graph->filters[i];
- for(j = 0; j < filter->input_count; j ++) {
+ for (j = 0; j < filter->input_count; j++) {
AVFilterLink *link = filter->inputs[j];
- if(link && link->in_formats != link->out_formats) {
- if(!avfilter_merge_formats(link->in_formats,
- link->out_formats)) {
+ if (link && link->in_formats != link->out_formats) {
+ if (!avfilter_merge_formats(link->in_formats,
+ link->out_formats)) {
AVFilterContext *scale;
char scale_args[256];
/* couldn't merge format lists. auto-insert scale filter */
av_log(log_ctx, AV_LOG_ERROR,
"Impossible to convert between the formats supported by the filter "
"'%s' and the filter '%s'\n", link->src->name, link->dst->name);
- return -1;
+ return AVERROR(EINVAL);
}
}
}
static void pick_format(AVFilterLink *link)
{
- if(!link || !link->in_formats)
+ if (!link || !link->in_formats)
return;
link->in_formats->format_count = 1;
{
int i, j;
- for(i = 0; i < graph->filter_count; i ++) {
+ for (i = 0; i < graph->filter_count; i++) {
AVFilterContext *filter = graph->filters[i];
- for(j = 0; j < filter->input_count; j ++)
+ for (j = 0; j < filter->input_count; j++)
pick_format(filter->inputs[j]);
- for(j = 0; j < filter->output_count; j ++)
+ for (j = 0; j < filter->output_count; j++)
pick_format(filter->outputs[j]);
}
}
int ff_avfilter_graph_config_formats(AVFilterGraph *graph, AVClass *log_ctx)
{
+ int ret;
+
/* find supported formats from sub-filters, and merge along links */
- if(query_formats(graph, log_ctx))
- return -1;
+ if ((ret = query_formats(graph, log_ctx)) < 0)
+ return ret;
/* Once everything is merged, it's possible that we'll still have
* multiple valid media format choices. We pick the first one. */
return 0;
}
-int avfilter_graph_config(AVFilterGraph *graphctx, AVClass *log_ctx)
+int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx)
{
int ret;