} else {
/* guess channel layout from nb expressions/channels */
eval->chlayout = av_get_default_channel_layout(eval->nb_channels);
- if (!eval->chlayout) {
+ if (!eval->chlayout && eval->nb_channels <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid number of channels '%d' provided\n",
eval->nb_channels);
ret = AVERROR(EINVAL);
{
EvalContext *eval = ctx->priv;
static const enum AVSampleFormat sample_fmts[] = { AV_SAMPLE_FMT_DBLP, AV_SAMPLE_FMT_NONE };
- int64_t chlayouts[] = { eval->chlayout, -1 };
+ int64_t chlayouts[] = { eval->chlayout ? eval->chlayout : FF_COUNT2LAYOUT(eval->nb_channels) , -1 };
int sample_rates[] = { eval->sample_rate, -1 };
ff_set_common_formats (ctx, ff_make_format_list(sample_fmts));