- if (channel_map == 1) {
- avc->channel_layout = avc->channels > 8 ? 0 :
- ff_vorbis_channel_layouts[avc->channels - 1];
- if (avc->channels > 2 && avc->channels <= 8) {
- const uint8_t *vorbis_offset = ff_vorbis_channel_layout_offsets[avc->channels - 1];
- int ch;
-
- /* Remap channels from Vorbis order to ffmpeg order */
- for (ch = 0; ch < avc->channels; ch++)
- mapping_arr[ch] = mapping[vorbis_offset[ch]];
- mapping = mapping_arr;
- }
- } else if (channel_map == 2) {
- int ambisonic_order = ff_sqrt(avc->channels) - 1;
- if (avc->channels != (ambisonic_order + 1) * (ambisonic_order + 1) &&
- avc->channels != (ambisonic_order + 1) * (ambisonic_order + 1) + 2) {
- av_log(avc, AV_LOG_ERROR,
- "Channel mapping 2 is only specified for channel counts"
- " which can be written as (n + 1)^2 or (n + 2)^2 + 2"
- " for nonnegative integer n\n");
- return AVERROR_INVALIDDATA;
- }
- if (avc->channels > 227) {
- av_log(avc, AV_LOG_ERROR, "Too many channels\n");
- return AVERROR_INVALIDDATA;
- }
- avc->channel_layout = 0;
- } else {
- avc->channel_layout = 0;
+ if (avc->channels > 2 && avc->channels <= 8) {
+ const uint8_t *vorbis_offset = ff_vorbis_channel_layout_offsets[avc->channels - 1];
+ int ch;
+
+ /* Remap channels from Vorbis order to ffmpeg order */
+ for (ch = 0; ch < avc->channels; ch++)
+ mapping_arr[ch] = mapping[vorbis_offset[ch]];
+ mapping = mapping_arr;