Add master audio balance
Test: Change Balance through Settings, play audio
Bug: 28390736
Co-author: Ed Savage-Jones <edward.savage-jones@sony.com>
Change-Id: I0169b436ccbaa5628584d9f4954dd7c76d021aae
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 0d6ef46..b8307ce 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -897,6 +897,40 @@
return NO_ERROR;
}
+status_t AudioFlinger::setMasterBalance(float balance)
+{
+ status_t ret = initCheck();
+ if (ret != NO_ERROR) {
+ return ret;
+ }
+
+ // check calling permissions
+ if (!settingsAllowed()) {
+ return PERMISSION_DENIED;
+ }
+
+ // check range
+ if (isnan(balance) || fabs(balance) > 1.f) {
+ return BAD_VALUE;
+ }
+
+ Mutex::Autolock _l(mLock);
+
+ // short cut.
+ if (mMasterBalance == balance) return NO_ERROR;
+
+ mMasterBalance = balance;
+
+ for (size_t i = 0; i < mPlaybackThreads.size(); i++) {
+ if (mPlaybackThreads.valueAt(i)->isDuplicating()) {
+ continue;
+ }
+ mPlaybackThreads.valueAt(i)->setMasterBalance(balance);
+ }
+
+ return NO_ERROR;
+}
+
status_t AudioFlinger::setMode(audio_mode_t mode)
{
status_t ret = initCheck();
@@ -1036,6 +1070,13 @@
return masterVolume_l();
}
+status_t AudioFlinger::getMasterBalance(float *balance) const
+{
+ Mutex::Autolock _l(mLock);
+ *balance = getMasterBalance_l();
+ return NO_ERROR; // if called through binder, may return a transactional error
+}
+
bool AudioFlinger::masterMute() const
{
Mutex::Autolock _l(mLock);
@@ -1047,6 +1088,11 @@
return mMasterVolume;
}
+float AudioFlinger::getMasterBalance_l() const
+{
+ return mMasterBalance;
+}
+
bool AudioFlinger::masterMute_l() const
{
return mMasterMute;