SND_CHN_MATRIX_1_0
c->matrix = *feeder_matrix_id_map(SND_CHN_MATRIX_1_0);
if (m_in->id == SND_CHN_MATRIX_1_0) {
if (m_out->id == SND_CHN_MATRIX_1_0)
[SND_CHN_MATRIX_1_0] = SND_CHN_MATRIX_MAP_1_0,
#define SND_CHN_MATRIX_1 SND_CHN_MATRIX_1_0
#define SND_CHN_MATRIX_BEGIN SND_CHN_MATRIX_1_0
.id = SND_CHN_MATRIX_1_0, \