AVFilterFormats *avfilter_merge_formats(AVFilterFormats *a, AVFilterFormats *b)
{
AVFilterFormats *ret;
- unsigned i, j, k = 0;
+ unsigned i, j, k = 0, m_count;
ret = av_mallocz(sizeof(AVFilterFormats));
/* merge list of formats */
- ret->formats = av_malloc(sizeof(*ret->formats) * FFMIN(a->format_count,
- b->format_count));
+ m_count = FFMIN(a->format_count, b->format_count);
+ if (m_count) {
+ ret->formats = av_malloc(sizeof(*ret->formats) * m_count);
for(i = 0; i < a->format_count; i ++)
for(j = 0; j < b->format_count; j ++)
if(a->formats[i] == b->formats[j])
ret->formats[k++] = a->formats[i];
ret->format_count = k;
+ }
/* check that there was at least one common format */
if(!ret->format_count) {
av_free(ret->formats);
;
formats = av_mallocz(sizeof(AVFilterFormats));
+ if (count)
formats->formats = av_malloc(sizeof(*formats->formats) * count);
formats->format_count = count;
memcpy(formats->formats, fmts, sizeof(*formats->formats) * count);