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Diffstat (limited to 'services/audioflinger/AudioFlinger.h')
| -rw-r--r-- | services/audioflinger/AudioFlinger.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/services/audioflinger/AudioFlinger.h b/services/audioflinger/AudioFlinger.h index 2e259c0..d9f2972 100644 --- a/services/audioflinger/AudioFlinger.h +++ b/services/audioflinger/AudioFlinger.h @@ -58,6 +58,15 @@ class AudioResampler; // ---------------------------------------------------------------------------- +// AudioFlinger has a hard-coded upper limit of 2 channels for capture and playback. +// There is support for > 2 channel tracks down-mixed to 2 channel output via a down-mix effect. +// Adding full support for > 2 channel capture or playback would require more than simply changing +// this #define. There is an independent hard-coded upper limit in AudioMixer; +// removing that AudioMixer limit would be necessary but insufficient to support > 2 channels. +// The macro FCC_2 highlights some (but not all) places where there is are 2-channel assumptions. +// Search also for "2", "left", "right", "[0]", "[1]", ">> 16", "<< 16", etc. +#define FCC_2 2 // FCC_2 = Fixed Channel Count 2 + static const nsecs_t kDefaultStandbyTimeInNsecs = seconds(3); class AudioFlinger : |