diff options
Diffstat (limited to 'modules/usbaudio/audio_hal.c')
| -rw-r--r-- | modules/usbaudio/audio_hal.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/modules/usbaudio/audio_hal.c b/modules/usbaudio/audio_hal.c index 5431476..872fa93 100644 --- a/modules/usbaudio/audio_hal.c +++ b/modules/usbaudio/audio_hal.c @@ -55,6 +55,8 @@ static const unsigned k_force_channels = 0; #define DEFAULT_INPUT_BUFFER_SIZE_MS 20 +// stereo channel count +#define FCC_2 2 // fixed channel count of 8 limitation (for data processing in AudioFlinger) #define FCC_8 8 @@ -528,10 +530,14 @@ static int adev_open_output_stream(struct audio_hw_device *dev, proposed_channel_count = profile_get_default_channel_count(out->profile); } if (proposed_channel_count != 0) { - config->channel_mask = audio_channel_out_mask_from_count(proposed_channel_count); - if (config->channel_mask == AUDIO_CHANNEL_INVALID) + if (proposed_channel_count <= FCC_2) { + // use channel position mask for mono and stereo + config->channel_mask = audio_channel_out_mask_from_count(proposed_channel_count); + } else { + // use channel index mask for multichannel config->channel_mask = audio_channel_mask_for_index_assignment_from_count(proposed_channel_count); + } out->hal_channel_count = proposed_channel_count; } else { out->hal_channel_count = audio_channel_count_from_out_mask(config->channel_mask); |