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diff --git a/include/media/IMediaPlayerService.h b/include/media/IMediaPlayerService.h
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+/*
+ * Copyright (C) 2008 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_IMEDIAPLAYERSERVICE_H
+#define ANDROID_IMEDIAPLAYERSERVICE_H
+
+#include <utils/Errors.h>  // for status_t
+#include <utils/KeyedVector.h>
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+#include <binder/IInterface.h>
+#include <binder/Parcel.h>
+#include <system/audio.h>
+
+#include <media/IMediaPlayerClient.h>
+#include <media/IMediaPlayer.h>
+#include <media/IMediaMetadataRetriever.h>
+
+namespace android {
+
+struct ICrypto;
+class IMediaRecorder;
+class IOMX;
+struct IStreamSource;
+
+class IMediaPlayerService: public IInterface
+{
+public:
+    DECLARE_META_INTERFACE(MediaPlayerService);
+
+    virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid) = 0;
+    virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid) = 0;
+    virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int audioSessionId = 0) = 0;
+
+    virtual sp<IMemory>         decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat) = 0;
+    virtual sp<IMemory>         decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, audio_format_t* pFormat) = 0;
+    virtual sp<IOMX>            getOMX() = 0;
+    virtual sp<ICrypto>         makeCrypto() = 0;
+
+    // codecs and audio devices usage tracking for the battery app
+    enum BatteryDataBits {
+        // tracking audio codec
+        kBatteryDataTrackAudio          = 0x1,
+        // tracking video codec
+        kBatteryDataTrackVideo          = 0x2,
+        // codec is started, otherwise codec is paused
+        kBatteryDataCodecStarted        = 0x4,
+        // tracking decoder (for media player),
+        // otherwise tracking encoder (for media recorder)
+        kBatteryDataTrackDecoder        = 0x8,
+        // start to play an audio on an audio device
+        kBatteryDataAudioFlingerStart   = 0x10,
+        // stop/pause the audio playback
+        kBatteryDataAudioFlingerStop    = 0x20,
+        // audio is rounted to speaker
+        kBatteryDataSpeakerOn           = 0x40,
+        // audio is rounted to devices other than speaker
+        kBatteryDataOtherAudioDeviceOn  = 0x80,
+    };
+
+    virtual void addBatteryData(uint32_t params) = 0;
+    virtual status_t pullBatteryData(Parcel* reply) = 0;
+};
+
+// ----------------------------------------------------------------------------
+
+class BnMediaPlayerService: public BnInterface<IMediaPlayerService>
+{
+public:
+    virtual status_t    onTransact( uint32_t code,
+                                    const Parcel& data,
+                                    Parcel* reply,
+                                    uint32_t flags = 0);
+};
+
+}; // namespace android
+
+#endif // ANDROID_IMEDIAPLAYERSERVICE_H