android/hal-audio: Remove unsupported mono channel mode

AudioFlinger can only provide PCM 16bit Stereo data for A2DP track so
we should not advertise mono channel mode in capabilities since we
can't downmix this internally.

diff --git a/android/hal-audio.c b/android/hal-audio.c
index 8ef5bff..4578c53 100644 (file)
--- a/android/hal-audio.c
+++ b/android/hal-audio.c
@@ -227,8 +227,7 @@ struct a2dp_audio_dev {
 static const a2dp_sbc_t sbc_presets[] = {
        {
                .frequency = SBC_SAMPLING_FREQ_44100 | SBC_SAMPLING_FREQ_48000,
-               .channel_mode = SBC_CHANNEL_MODE_MONO |
-                               SBC_CHANNEL_MODE_DUAL_CHANNEL |
+               .channel_mode = SBC_CHANNEL_MODE_DUAL_CHANNEL |
                                SBC_CHANNEL_MODE_STEREO |
                                SBC_CHANNEL_MODE_JOINT_STEREO,
                .subbands = SBC_SUBBANDS_4 | SBC_SUBBANDS_8,