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mux: check individual channels and not entire matrix row 

Currently we are checking if matrix row contains any 1's (popcount). In
mux case this doesn't tell us if channels are mixed. For example if we
have 2 input matrix in which first row's position 2 and 4 have value 1,
it means that both streams channel 1 is copied to output channels 2 and
4, so not mixed. So change the check to be channel specific.

Signed-off-by: Jaska Uimonen <jaska.uimonen@intel.com>
This commit is contained in:
Jaska Uimonen 2020-11-30 10:17:31 +02:00 committed by Liam Girdwood
parent a25cf0f1ba
commit 67f3b06d69
1 changed files with 49 additions and 14 deletions
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61
src/audio/mux/mux.c
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@ -44,12 +44,58 @@ DECLARE_SOF_RT_UUID("demux", demux_uuid, 0xc4b26868, 0x1430, 0x470e,
DECLARE_TR_CTX(demux_tr, SOF_UUID(demux_uuid), LOG_LEVEL_INFO);
/*
* Check that we are not configuring routing matrix for mixing.
*
* In mux case this means, that muxed streams' configuration matrices don't
* have 1's in corresponding matrix indices. Also single stream matrix can't
* have 1's in same column as that corresponds to mixing also.
*/
static bool mux_mix_check(struct sof_mux_config *cfg)
{
bool channel_set;
int i;
int j;
int k;
/* check for single matrix mixing, i.e multiple column bits are not set */
for (i = 0 ; i < cfg->num_streams; i++) {
for (j = 0 ; j < PLATFORM_MAX_CHANNELS; j++) {
channel_set = false;
for (k = 0 ; k < PLATFORM_MAX_CHANNELS; k++) {
if (cfg->streams[i].mask[k] & (1 << j)) {
if (!channel_set)
channel_set = true;
else
return true;
}
}
}
}
/* check for inter matrix mixing, i.e corresponding bits are not set */
for (i = 0 ; i < PLATFORM_MAX_CHANNELS; i++) {
for (j = 0 ; j < PLATFORM_MAX_CHANNELS; j++) {
channel_set = false;
for (k = 0 ; k < cfg->num_streams; k++) {
if (cfg->streams[k].mask[i] & (1 << j)) {
if (!channel_set)
channel_set = true;
else
return true;
}
}
}
}
return false;
}
static int mux_set_values(struct comp_dev *dev, struct comp_data *cd,
struct sof_mux_config *cfg)
{
uint8_t i;
uint8_t j;
bool channel_set;
comp_info(dev, "mux_set_values()");
@ -82,19 +128,8 @@ static int mux_set_values(struct comp_dev *dev, struct comp_data *cd,
}
if (dev->comp.type == SOF_COMP_MUX) {
for (j = 0 ; j < PLATFORM_MAX_CHANNELS; j++) {
channel_set = false;
for (i = 0 ; i < cfg->num_streams; i++) {
if (popcount(cfg->streams[i].mask[j])) {
if (!channel_set) {
channel_set = true;
} else {
if (mux_mix_check(cfg))
comp_cl_err(&comp_mux, "mux_set_values(): mux component is not able to mix channels");
return -EINVAL;
}
}
}
}
}
for (i = 0; i < cfg->num_streams; i++) {