Native interface to AudioService
Implement a native interface to communicate with
AudioService implemented in Java
Define transaction IDs for all methods, but comment
out the ones for the methods that are not implemented.
Implement the methods for PlayerBase tracking.
Test: make, related SL ES test coming
Bug: 30955183
Change-Id: I9f9bbad7c07743cdd8957cf5b8b151a8aead53b3
diff --git a/services/audiomanager/IAudioManager.cpp b/services/audiomanager/IAudioManager.cpp
new file mode 100644
index 0000000..a41804f
--- /dev/null
+++ b/services/audiomanager/IAudioManager.cpp
@@ -0,0 +1,103 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#define LOG_TAG "IAudioManager"
+//#define LOG_NDEBUG 0
+#include <utils/Log.h>
+
+#include <stdint.h>
+#include <sys/types.h>
+
+#include <binder/Parcel.h>
+#include <audiomanager/AudioManager.h>
+#include <audiomanager/IAudioManager.h>
+
+namespace android {
+
+class BpAudioManager : public BpInterface<IAudioManager>
+{
+public:
+ explicit BpAudioManager(const sp<IBinder>& impl)
+ : BpInterface<IAudioManager>(impl)
+ {
+ }
+
+ virtual audio_unique_id_t trackPlayer(int playerType, int usage, int content) {
+ Parcel data, reply;
+ data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
+ data.writeInt32(1); // non-null PlayerIdCard parcelable
+ // marshall PlayerIdCard data
+ data.writeInt32((int32_t) playerType);
+ // write attributes of PlayerIdCard
+ data.writeInt32(usage);
+ data.writeInt32(content);
+ data.writeInt32(0 /*source: none here, this is a player*/);
+ data.writeInt32(0 /*flags*/);
+ // write attributes' tags
+ data.writeInt32(1 /*FLATTEN_TAGS*/);
+ data.writeString16(String16("")); // no tags
+ // write attributes' bundle
+ data.writeInt32(-1977 /*ATTR_PARCEL_IS_NULL_BUNDLE*/); // no bundle
+ // get new PIId in reply
+ const status_t res = remote()->transact(TRACK_PLAYER, data, &reply, 0);
+ if (res != OK || reply.readExceptionCode() != 0) {
+ ALOGE("trackPlayer() failed, piid is %d", PLAYER_PIID_INVALID);
+ return PLAYER_PIID_INVALID;
+ } else {
+ const audio_unique_id_t piid = (audio_unique_id_t) reply.readInt32();
+ ALOGV("trackPlayer() returned piid %d", piid);
+ return piid;
+ }
+ }
+
+ virtual status_t playerAttributes(audio_unique_id_t piid, int usage, int content) {
+ Parcel data, reply;
+ data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
+ data.writeInt32(piid);
+ data.writeInt32(1); // non-null AudioAttributes parcelable
+ data.writeInt32(usage);
+ data.writeInt32(content);
+ data.writeInt32(0 /*source: none here, this is a player*/);
+ data.writeInt32(0 /*flags*/);
+ // write attributes' tags
+ data.writeInt32(1 /*FLATTEN_TAGS*/);
+ data.writeString16(String16("")); // no tags
+ // write attributes' bundle
+ data.writeInt32(-1977 /*ATTR_PARCEL_IS_NULL_BUNDLE*/); // no bundle
+ return remote()->transact(PLAYER_ATTRIBUTES, data, &reply, IBinder::FLAG_ONEWAY);
+ }
+
+ virtual status_t playerEvent(int piid, int event) {
+ Parcel data, reply;
+ data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
+ data.writeInt32(piid);
+ data.writeInt32(event);
+ return remote()->transact(PLAYER_EVENT, data, &reply, IBinder::FLAG_ONEWAY);
+ }
+
+ virtual status_t releasePlayer(int piid) {
+ Parcel data, reply;
+ data.writeInterfaceToken(IAudioManager::getInterfaceDescriptor());
+ data.writeInt32(piid);
+ return remote()->transact(RELEASE_PLAYER, data, &reply, IBinder::FLAG_ONEWAY);
+ }
+};
+
+IMPLEMENT_META_INTERFACE(AudioManager, "android.media.IAudioService");
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android