static int init_filters(const char *filters_descr)
{
char args[512];
- int ret;
+ int ret = 0;
AVFilter *buffersrc = avfilter_get_by_name("buffer");
AVFilter *buffersink = avfilter_get_by_name("buffersink");
AVFilterInOut *outputs = avfilter_inout_alloc();
AVBufferSinkParams *buffersink_params;
filter_graph = avfilter_graph_alloc();
+ if (!outputs || !inputs || !filter_graph) {
+ ret = AVERROR(ENOMEM);
+ goto end;
+ }
/* buffer video source: the decoded frames from the decoder will be inserted here. */
snprintf(args, sizeof(args),
args, NULL, filter_graph);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot create buffer source\n");
- return ret;
+ goto end;
}
/* buffer video sink: to terminate the filter chain. */
av_free(buffersink_params);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Cannot create buffer sink\n");
- return ret;
+ goto end;
}
/* Endpoints for the filter graph. */
if ((ret = avfilter_graph_parse_ptr(filter_graph, filters_descr,
&inputs, &outputs, NULL)) < 0)
- return ret;
+ goto end;
if ((ret = avfilter_graph_config(filter_graph, NULL)) < 0)
- return ret;
- return 0;
+ goto end;
+
+end:
+ avfilter_inout_free(&inputs);
+ avfilter_inout_free(&outputs);
+
+ return ret;
}
static void display_frame(const AVFrame *frame, AVRational time_base)