146 static void channel_pos(int channels, int pos[8])  in channel_pos()  argument
149    if (channels==4)  in channel_pos()
155    } else if (channels==3||channels==5||channels==6)  in channel_pos()
163    } else if (channels==7)  in channel_pos()
172    } else if (channels==8)  in channel_pos()
225 …  int len, int overlap, int channels, int rate, opus_copy_channel_in_func copy_channel_in, int arch  in surround_analysis()  argument
256    channel_pos(channels, pos);  in surround_analysis()
262    for (c=0;c<channels;c++)  in surround_analysis()
268       (*copy_channel_in)(x, 1, pcm, channels, c, len, NULL);  in surround_analysis()
337    channel_offset = HALF16(celt_log2(QCONST32(2.f,14)/(channels-1)));  in surround_analysis()
348    for (c=0;c<channels;c++)  in surround_analysis()
389 opus_int32 opus_multistream_surround_encoder_get_size(int channels, int mapping_family)  in opus_multistream_surround_encoder_get_size()  argument
397       if (channels==1)  in opus_multistream_surround_encoder_get_size()
401       } else if (channels==2)  in opus_multistream_surround_encoder_get_size()
407    } else if (mapping_family==1 && channels<=8 && channels>=1)  in opus_multistream_surround_encoder_get_size()
409       nb_streams=vorbis_mappings[channels-1].nb_streams;  in opus_multistream_surround_encoder_get_size()
410       nb_coupled_streams=vorbis_mappings[channels-1].nb_coupled_streams;  in opus_multistream_surround_encoder_get_size()
413       nb_streams=channels;  in opus_multistream_surround_encoder_get_size()
417       if (!validate_ambisonics(channels, &nb_streams, &nb_coupled_streams))  in opus_multistream_surround_encoder_get_size()
422    if (channels>2)  in opus_multistream_surround_encoder_get_size()
424       size += channels*(120*sizeof(opus_val32) + sizeof(opus_val32));  in opus_multistream_surround_encoder_get_size()
432       int channels,  in opus_multistream_encoder_init_impl()  argument
445    if ((channels>255) || (channels<1) || (coupled_streams>streams) ||  in opus_multistream_encoder_init_impl()
450    st->layout.nb_channels = channels;  in opus_multistream_encoder_init_impl()
490       OPUS_CLEAR(ms_get_preemph_mem(st), channels);  in opus_multistream_encoder_init_impl()
491       OPUS_CLEAR(ms_get_window_mem(st), channels*120);  in opus_multistream_encoder_init_impl()
500       int channels,  in opus_multistream_encoder_init()  argument
507    return opus_multistream_encoder_init_impl(st, Fs, channels, streams,  in opus_multistream_encoder_init()
515       int channels,  in opus_multistream_surround_encoder_init()  argument
525    if ((channels>255) || (channels<1))  in opus_multistream_surround_encoder_init()
530       if (channels==1)  in opus_multistream_surround_encoder_init()
535       } else if (channels==2)  in opus_multistream_surround_encoder_init()
543    } else if (mapping_family==1 && channels<=8 && channels>=1)  in opus_multistream_surround_encoder_init()
546       *streams=vorbis_mappings[channels-1].nb_streams;  in opus_multistream_surround_encoder_init()
547       *coupled_streams=vorbis_mappings[channels-1].nb_coupled_streams;  in opus_multistream_surround_encoder_init()
548       for (i=0;i<channels;i++)  in opus_multistream_surround_encoder_init()
549          mapping[i] = vorbis_mappings[channels-1].mapping[i];  in opus_multistream_surround_encoder_init()
550       if (channels>=6)  in opus_multistream_surround_encoder_init()
555       *streams=channels;  in opus_multistream_surround_encoder_init()
557       for(i=0;i<channels;i++)  in opus_multistream_surround_encoder_init()
562       if (!validate_ambisonics(channels, streams, coupled_streams))  in opus_multistream_surround_encoder_init()
571    if (channels>2 && mapping_family==1) {  in opus_multistream_surround_encoder_init()
580    return opus_multistream_encoder_init_impl(st, Fs, channels, *streams,  in opus_multistream_surround_encoder_init()
587       int channels,  in opus_multistream_encoder_create()  argument
597    if ((channels>255) || (channels<1) || (coupled_streams>streams) ||  in opus_multistream_encoder_create()
611 …ret = opus_multistream_encoder_init(st, Fs, channels, streams, coupled_streams, mapping, applicati…  in opus_multistream_encoder_create()
624       int channels,  in opus_multistream_surround_encoder_create()  argument
636    if ((channels>255) || (channels<1))  in opus_multistream_surround_encoder_create()
642    size = opus_multistream_surround_encoder_get_size(channels, mapping_family);  in opus_multistream_surround_encoder_create()
656 …ret = opus_multistream_surround_encoder_init(st, Fs, channels, mapping_family, streams, coupled_st…  in opus_multistream_surround_encoder_create()
711       This models the main saving of coupled channels over uncoupled. */  in surround_rate_allocation()