static int query_formats(AVFilterContext *ctx) { AVFilterFormats *formats = NULL; AConvertContext *aconvert = ctx->priv; AVFilterLink *inlink = ctx->inputs[0]; AVFilterLink *outlink = ctx->outputs[0]; AVFilterChannelLayouts *layouts; ff_formats_ref(avfilter_make_all_formats(AVMEDIA_TYPE_AUDIO), &inlink->out_formats); if (aconvert->out_sample_fmt != AV_SAMPLE_FMT_NONE) { formats = NULL; ff_add_format(&formats, aconvert->out_sample_fmt); ff_formats_ref(formats, &outlink->in_formats); } else ff_formats_ref(avfilter_make_all_formats(AVMEDIA_TYPE_AUDIO), &outlink->in_formats); ff_channel_layouts_ref(ff_all_channel_layouts(), &inlink->out_channel_layouts); if (aconvert->out_chlayout != 0) { layouts = NULL; ff_add_channel_layout(&layouts, aconvert->out_chlayout); ff_channel_layouts_ref(layouts, &outlink->in_channel_layouts); } else ff_channel_layouts_ref(ff_all_channel_layouts(), &outlink->in_channel_layouts); return 0; }
int avfilter_default_query_formats(AVFilterContext *ctx) { avfilter_set_common_pixel_formats(ctx, avfilter_make_all_formats(AVMEDIA_TYPE_VIDEO)); avfilter_set_common_sample_formats(ctx, avfilter_make_all_formats(AVMEDIA_TYPE_AUDIO)); avfilter_set_common_channel_layouts(ctx, avfilter_make_all_channel_layouts()); avfilter_set_common_packing_formats(ctx, avfilter_make_all_packing_formats()); return 0; }
static int filter_query_formats(AVFilterContext *ctx) { int ret; AVFilterFormats *formats; AVFilterChannelLayouts *chlayouts; AVFilterFormats *samplerates; enum AVMediaType type = ctx->inputs && ctx->inputs [0] ? ctx->inputs [0]->type : ctx->outputs && ctx->outputs[0] ? ctx->outputs[0]->type : AVMEDIA_TYPE_VIDEO; if ((ret = ctx->filter->query_formats(ctx)) < 0) return ret; formats = avfilter_make_all_formats(type); if (!formats) return AVERROR(ENOMEM); ff_set_common_formats(ctx, formats); if (type == AVMEDIA_TYPE_AUDIO) { samplerates = ff_all_samplerates(); if (!samplerates) return AVERROR(ENOMEM); ff_set_common_samplerates(ctx, samplerates); chlayouts = ff_all_channel_layouts(); if (!chlayouts) return AVERROR(ENOMEM); ff_set_common_channel_layouts(ctx, chlayouts); } return 0; }