static int asink_query_formats(AVFilterContext *ctx) { BufferSinkContext *buf = ctx->priv; AVFilterFormats *formats = NULL; AVFilterChannelLayouts *layouts = NULL; unsigned i; int ret; CHECK_LIST_SIZE(sample_fmts) CHECK_LIST_SIZE(sample_rates) CHECK_LIST_SIZE(channel_layouts) CHECK_LIST_SIZE(channel_counts) if (buf->sample_fmts_size) { for (i = 0; i < NB_ITEMS(buf->sample_fmts); i++) if ((ret = ff_add_format(&formats, buf->sample_fmts[i])) < 0) return ret; ff_set_common_formats(ctx, formats); } if (buf->channel_layouts_size || buf->channel_counts_size || buf->all_channel_counts) { for (i = 0; i < NB_ITEMS(buf->channel_layouts); i++) if ((ret = ff_add_channel_layout(&layouts, buf->channel_layouts[i])) < 0) return ret; for (i = 0; i < NB_ITEMS(buf->channel_counts); i++) if ((ret = ff_add_channel_layout(&layouts, FF_COUNT2LAYOUT(buf->channel_counts[i]))) < 0) return ret; if (buf->all_channel_counts) { if (layouts) av_log(ctx, AV_LOG_WARNING, "Conflicting all_channel_counts and list in options\n"); else if (!(layouts = ff_all_channel_counts())) return AVERROR(ENOMEM); } ff_set_common_channel_layouts(ctx, layouts); } if (buf->sample_rates_size) { formats = NULL; for (i = 0; i < NB_ITEMS(buf->sample_rates); i++) if ((ret = ff_add_format(&formats, buf->sample_rates[i])) < 0) return ret; ff_set_common_samplerates(ctx, formats); } return 0; }