Add support for audio recording source in generic audio policy mgr.

Update the platform-independent audio policy manager to pass the
 nature of the audio recording source to the audio policy client
 interface through the AudioPolicyClientInterface::setParameters()
 method.

Change-Id: I6b4fd0f8a3acea0d7d30bbad98edd1977dc012bf

3 files changed, 7 insertions, 5 deletions

diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index 1081c356e688..cce2400321f8 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -472,7 +472,7 @@ public:
     AudioParameter(const String8& keyValuePairs);
     virtual ~AudioParameter();
 
-    // reserved parameter keys for changeing standard parameters with setParameters() function.
+    // reserved parameter keys for changing standard parameters with setParameters() function.
     // Using these keys is mandatory for AudioFlinger to properly monitor audio output/input
     // configuration changes and act accordingly.
     //  keyRouting: to change audio routing, value is an int in AudioSystem::audio_devices
@@ -480,11 +480,14 @@ public:
     //  keyFormat: to change audio format, value is an int in AudioSystem::audio_format
     //  keyChannels: to change audio channel configuration, value is an int in AudioSystem::audio_channels
     //  keyFrameCount: to change audio output frame count, value is an int
+    //  keyInputSource: to change audio input source, value is an int in audio_source
+    //     (defined in media/mediarecorder.h)
     static const char *keyRouting;
     static const char *keySamplingRate;
     static const char *keyFormat;
     static const char *keyChannels;
     static const char *keyFrameCount;
+    static const char *keyInputSource;
 
     String8 toString();
 
diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index 9c2a8ba3ab3c..1a3fcd6c3870 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -835,6 +835,7 @@ const char *AudioParameter::keySamplingRate = "sampling_rate";
 const char *AudioParameter::keyFormat = "format";
 const char *AudioParameter::keyChannels = "channels";
 const char *AudioParameter::keyFrameCount = "frame_count";
+const char *AudioParameter::keyInputSource = "input_source";
 
 AudioParameter::AudioParameter(const String8& keyValuePairs)
 {
diff --git a/services/audioflinger/AudioPolicyManagerBase.cpp b/services/audioflinger/AudioPolicyManagerBase.cpp
index edea2c591103..b17584ab8213 100644
--- a/services/audioflinger/AudioPolicyManagerBase.cpp
+++ b/services/audioflinger/AudioPolicyManagerBase.cpp
@@ -760,10 +760,8 @@ status_t AudioPolicyManagerBase::startInput(audio_io_handle_t input)
     AudioParameter param = AudioParameter();
     param.addInt(String8(AudioParameter::keyRouting), (int)inputDesc->mDevice);
 
-    // use Voice Recognition mode or not for this input based on input source
-    int vr_enabled = inputDesc->mInputSource == AUDIO_SOURCE_VOICE_RECOGNITION ? 1 : 0;
-    param.addInt(String8("vr_mode"), vr_enabled);
-    LOGV("AudioPolicyManager::startInput(%d), setting vr_mode to %d", inputDesc->mInputSource, vr_enabled);
+    param.addInt(String8(AudioParameter::keyInputSource), (int)inputDesc->mInputSource);
+    LOGV("AudioPolicyManager::startInput() input source = %d", inputDesc->mInputSource);
 
     mpClientInterface->setParameters(input, param.toString());