audio policy: add routing update client interface
Added IAudioPolicyServiceClient client binder interface
for client process to receive notifications from AudioPolicyService
when audio ports are added/removed or audio patches created/released.
The audio patches owned by a given client are automatically released when
this client binder dies.
Bug: 14815883.
Change-Id: I6013f6aec03b50565cffb1ad2cd1f0f8852032c5
diff --git a/include/media/AudioSystem.h b/include/media/AudioSystem.h
index a79a9ff..6fe0c7f 100644
--- a/include/media/AudioSystem.h
+++ b/include/media/AudioSystem.h
@@ -19,6 +19,7 @@
#include <hardware/audio_effect.h>
#include <media/IAudioFlingerClient.h>
+#include <media/IAudioPolicyServiceClient.h>
#include <system/audio.h>
#include <system/audio_policy.h>
#include <utils/Errors.h>
@@ -301,6 +302,21 @@
// ----------------------------------------------------------------------------
+ class AudioPortCallback : public RefBase
+ {
+ public:
+
+ AudioPortCallback() {}
+ virtual ~AudioPortCallback() {}
+
+ virtual void onAudioPortListUpdate() = 0;
+ virtual void onAudioPatchListUpdate() = 0;
+ virtual void onServiceDied() = 0;
+
+ };
+
+ static void setAudioPortCallback(sp<AudioPortCallback> callBack);
+
private:
class AudioFlingerClient: public IBinder::DeathRecipient, public BnAudioFlingerClient
@@ -319,7 +335,8 @@
virtual void ioConfigChanged(int event, audio_io_handle_t ioHandle, const void *param2);
};
- class AudioPolicyServiceClient: public IBinder::DeathRecipient
+ class AudioPolicyServiceClient: public IBinder::DeathRecipient,
+ public BnAudioPolicyServiceClient
{
public:
AudioPolicyServiceClient() {
@@ -327,6 +344,10 @@
// DeathRecipient
virtual void binderDied(const wp<IBinder>& who);
+
+ // IAudioPolicyServiceClient
+ virtual void onAudioPortListUpdate();
+ virtual void onAudioPatchListUpdate();
};
static sp<AudioFlingerClient> gAudioFlingerClient;
@@ -349,6 +370,8 @@
// list of output descriptors containing cached parameters
// (sampling rate, framecount, channel count...)
static DefaultKeyedVector<audio_io_handle_t, OutputDescriptor *> gOutputs;
+
+ static sp<AudioPortCallback> gAudioPortCallback;
};
}; // namespace android
diff --git a/include/media/IAudioPolicyService.h b/include/media/IAudioPolicyService.h
index 6b6df6e..d422aa3 100644
--- a/include/media/IAudioPolicyService.h
+++ b/include/media/IAudioPolicyService.h
@@ -25,6 +25,7 @@
#include <utils/Errors.h>
#include <binder/IInterface.h>
#include <media/AudioSystem.h>
+#include <media/IAudioPolicyServiceClient.h>
#include <system/audio_policy.h>
@@ -124,6 +125,7 @@
/* Set audio port configuration */
virtual status_t setAudioPortConfig(const struct audio_port_config *config) = 0;
+ virtual void registerClient(const sp<IAudioPolicyServiceClient>& client) = 0;
};
diff --git a/include/media/IAudioPolicyServiceClient.h b/include/media/IAudioPolicyServiceClient.h
new file mode 100644
index 0000000..59df046
--- /dev/null
+++ b/include/media/IAudioPolicyServiceClient.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_IAUDIOPOLICYSERVICECLIENT_H
+#define ANDROID_IAUDIOPOLICYSERVICECLIENT_H
+
+
+#include <utils/RefBase.h>
+#include <binder/IInterface.h>
+#include <system/audio.h>
+
+namespace android {
+
+// ----------------------------------------------------------------------------
+
+class IAudioPolicyServiceClient : public IInterface
+{
+public:
+ DECLARE_META_INTERFACE(AudioPolicyServiceClient);
+
+ // Notifies a change of audio port configuration.
+ virtual void onAudioPortListUpdate() = 0;
+ // Notifies a change of audio patch configuration.
+ virtual void onAudioPatchListUpdate() = 0;
+};
+
+
+// ----------------------------------------------------------------------------
+
+class BnAudioPolicyServiceClient : public BnInterface<IAudioPolicyServiceClient>
+{
+public:
+ virtual status_t onTransact( uint32_t code,
+ const Parcel& data,
+ Parcel* reply,
+ uint32_t flags = 0);
+};
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+
+#endif // ANDROID_IAUDIOPOLICYSERVICECLIENT_H