51     int out_matrix_channels;  member
68         (out_channels == am->out_matrix_channels || out_channels == 0)) {  in ff_audio_mix_set_func()
291     if (!am->in_matrix_channels || !am->out_matrix_channels)  in mix_function_init()
448     if (am->in_matrix_channels && am->out_matrix_channels) {  in ff_audio_mix()
452         if (am->out_matrix_channels < am->out_channels ||  in ff_audio_mix()
465             am->mix_generic(data, am->matrix, len, am->out_matrix_channels,  in ff_audio_mix()
468             am->mix(data, am->matrix, len, am->out_matrix_channels,  in ff_audio_mix()
472     if (am->out_matrix_channels < am->out_channels) {  in ff_audio_mix()
561             am->out_matrix_channels--;  in reduce_matrix()
566     if (am->out_matrix_channels == 0 || am->in_matrix_channels == 0) {  in reduce_matrix()
567         am->out_matrix_channels = 0;  in reduce_matrix()
616         am->out_matrix_channels = 0;  in reduce_matrix()
644             am->out_matrix_channels--;  in reduce_matrix()
647     if (am->out_matrix_channels == 0) {  in reduce_matrix()
671     am->out_matrix_channels = am->out_channels;  in ff_audio_mix_set_matrix()
676     am->matrix_## type[0] = av_mallocz(am->out_matrix_channels *            \  in ff_audio_mix_set_matrix()
699     if (am->in_matrix_channels && am->out_matrix_channels) {  in ff_audio_mix_set_matrix()
727            am->in_matrix_channels, am->out_matrix_channels);  in ff_audio_mix_set_matrix()