50     int in_matrix_channels;  member
67         ( in_channels ==  am->in_matrix_channels ||  in_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()
453              am->in_matrix_channels <  am->in_channels) {  in ff_audio_mix()
466                             am->in_matrix_channels);  in ff_audio_mix()
469                     am->in_matrix_channels);  in ff_audio_mix()
563                 am->in_matrix_channels--;  in reduce_matrix()
566     if (am->out_matrix_channels == 0 || am->in_matrix_channels == 0) {  in reduce_matrix()
568         am->in_matrix_channels = 0;  in reduce_matrix()
597             am->in_matrix_channels--;  in reduce_matrix()
612             am->in_matrix_channels--;  in reduce_matrix()
615     if (am->in_matrix_channels == 0) {  in reduce_matrix()
648         am->in_matrix_channels = 0;  in reduce_matrix()
670     am->in_matrix_channels  = am->in_channels;  in ff_audio_mix_set_matrix()
677                                        am->in_matrix_channels  *            \  in ff_audio_mix_set_matrix()
686                                      am->in_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()