324 lines
13 KiB
C
324 lines
13 KiB
C
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/*
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**
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** Copyright 2008, The Android Open Source Project
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** Copyright (c) 2009-2011, The Linux Foundation. All rights reserved.
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#ifndef ANDROID_MEDIAPLAYERSERVICE_H
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#define ANDROID_MEDIAPLAYERSERVICE_H
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#include <utils/Log.h>
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#include <utils/threads.h>
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#include <utils/List.h>
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#include <utils/Errors.h>
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#include <utils/KeyedVector.h>
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#include <utils/String8.h>
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#include <utils/Vector.h>
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#include <media/IMediaPlayerService.h>
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#include <media/MediaPlayerInterface.h>
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#include <media/Metadata.h>
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namespace android {
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class IMediaRecorder;
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class IMediaMetadataRetriever;
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class IOMX;
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class MediaRecorderClient;
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#define CALLBACK_ANTAGONIZER 0
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#if CALLBACK_ANTAGONIZER
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class Antagonizer {
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public:
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Antagonizer(notify_callback_f cb, void* client);
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void start() { mActive = true; }
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void stop() { mActive = false; }
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void kill();
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private:
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static const int interval;
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Antagonizer();
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static int callbackThread(void* cookie);
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Mutex mLock;
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Condition mCondition;
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bool mExit;
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bool mActive;
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void* mClient;
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notify_callback_f mCb;
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};
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#endif
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class MediaPlayerService : public BnMediaPlayerService
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{
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class Client;
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class AudioOutput : public MediaPlayerBase::AudioSink
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{
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public:
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AudioOutput(int sessionId);
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virtual ~AudioOutput();
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virtual bool ready() const { return mTrack != NULL; }
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virtual bool realtime() const { return true; }
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virtual ssize_t bufferSize() const;
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virtual ssize_t frameCount() const;
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virtual ssize_t channelCount() const;
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virtual ssize_t frameSize() const;
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virtual uint32_t latency() const;
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virtual float msecsPerFrame() const;
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virtual status_t getPosition(uint32_t *position);
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virtual int getSessionId();
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virtual status_t open(
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uint32_t sampleRate, int channelCount,
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int format, int bufferCount,
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AudioCallback cb, void *cookie);
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virtual status_t openSession(
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int format, int sessionId, uint32_t sampleRate, int channels);
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virtual void start();
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virtual ssize_t write(const void* buffer, size_t size);
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virtual void stop();
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virtual void flush();
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virtual void pause();
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virtual void pauseSession();
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virtual void resumeSession();
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virtual void close();
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virtual void closeSession();
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void setAudioStreamType(int streamType) { mStreamType = streamType; }
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void setVolume(float left, float right);
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status_t setAuxEffectSendLevel(float level);
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status_t attachAuxEffect(int effectId);
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virtual status_t dump(int fd, const Vector<String16>& args) const;
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static bool isOnEmulator();
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static int getMinBufferCount();
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private:
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static void setMinBufferCount();
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static void CallbackWrapper(
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int event, void *me, void *info);
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AudioTrack* mTrack;
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AudioTrack* mSession;
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AudioCallback mCallback;
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void * mCallbackCookie;
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int mStreamType;
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float mLeftVolume;
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float mRightVolume;
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float mMsecsPerFrame;
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uint32_t mLatency;
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int mSessionId;
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float mSendLevel;
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int mAuxEffectId;
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static bool mIsOnEmulator;
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static int mMinBufferCount; // 12 for emulator; otherwise 4
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};
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class AudioCache : public MediaPlayerBase::AudioSink
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{
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public:
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AudioCache(const char* name);
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virtual ~AudioCache() {}
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virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); }
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virtual bool realtime() const { return false; }
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virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; }
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virtual ssize_t frameCount() const { return mFrameCount; }
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virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; }
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virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AudioSystem::PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); }
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virtual uint32_t latency() const;
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virtual float msecsPerFrame() const;
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virtual status_t getPosition(uint32_t *position);
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virtual int getSessionId();
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virtual status_t open(
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uint32_t sampleRate, int channelCount, int format,
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int bufferCount = 1,
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AudioCallback cb = NULL, void *cookie = NULL);
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virtual void start();
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virtual ssize_t write(const void* buffer, size_t size);
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virtual void stop();
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virtual void flush() {}
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virtual void pause() {}
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virtual void close() {}
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void setAudioStreamType(int streamType) {}
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void setVolume(float left, float right) {}
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uint32_t sampleRate() const { return mSampleRate; }
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uint32_t format() const { return (uint32_t)mFormat; }
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size_t size() const { return mSize; }
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status_t wait();
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sp<IMemoryHeap> getHeap() const { return mHeap; }
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static void notify(void* cookie, int msg, int ext1, int ext2);
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virtual status_t dump(int fd, const Vector<String16>& args) const;
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private:
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AudioCache();
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Mutex mLock;
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Condition mSignal;
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sp<MemoryHeapBase> mHeap;
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float mMsecsPerFrame;
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uint16_t mChannelCount;
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uint16_t mFormat;
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ssize_t mFrameCount;
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uint32_t mSampleRate;
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uint32_t mSize;
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int mError;
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bool mCommandComplete;
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sp<Thread> mCallbackThread;
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};
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public:
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static void instantiate();
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// IMediaPlayerService interface
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virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid);
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void removeMediaRecorderClient(wp<MediaRecorderClient> client);
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virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid);
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// House keeping for media player clients
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virtual sp<IMediaPlayer> create(
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pid_t pid, const sp<IMediaPlayerClient>& client, const char* url,
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const KeyedVector<String8, String8> *headers, int audioSessionId);
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virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length, int audioSessionId);
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virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat);
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virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat);
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virtual sp<IOMX> getOMX();
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virtual status_t dump(int fd, const Vector<String16>& args);
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void removeClient(wp<Client> client);
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private:
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class Client : public BnMediaPlayer {
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// IMediaPlayer interface
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virtual void disconnect();
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virtual status_t setVideoSurface(const sp<ISurface>& surface);
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virtual status_t prepareAsync();
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virtual status_t start();
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virtual status_t stop();
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virtual status_t pause();
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virtual status_t isPlaying(bool* state);
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virtual status_t seekTo(int msec);
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virtual status_t getCurrentPosition(int* msec);
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virtual status_t getDuration(int* msec);
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virtual status_t reset();
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virtual status_t setAudioStreamType(int type);
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virtual status_t setLooping(int loop);
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virtual status_t setVolume(float leftVolume, float rightVolume);
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virtual status_t invoke(const Parcel& request, Parcel *reply);
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virtual status_t setMetadataFilter(const Parcel& filter);
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virtual status_t getMetadata(bool update_only,
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bool apply_filter,
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Parcel *reply);
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virtual status_t suspend();
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virtual status_t resume();
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virtual status_t setAuxEffectSendLevel(float level);
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virtual status_t attachAuxEffect(int effectId);
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sp<MediaPlayerBase> createPlayer(player_type playerType);
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status_t setDataSource(
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const char *url,
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const KeyedVector<String8, String8> *headers);
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status_t setDataSource(int fd, int64_t offset, int64_t length);
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static void notify(void* cookie, int msg, int ext1, int ext2);
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pid_t pid() const { return mPid; }
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virtual status_t dump(int fd, const Vector<String16>& args) const;
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int getAudioSessionId() { return mAudioSessionId; }
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private:
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friend class MediaPlayerService;
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Client( const sp<MediaPlayerService>& service,
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pid_t pid,
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int32_t connId,
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const sp<IMediaPlayerClient>& client,
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int audioSessionId);
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Client();
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virtual ~Client();
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void deletePlayer();
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sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; }
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// @param type Of the metadata to be tested.
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// @return true if the metadata should be dropped according to
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// the filters.
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bool shouldDropMetadata(media::Metadata::Type type) const;
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// Add a new element to the set of metadata updated. Noop if
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// the element exists already.
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// @param type Of the metadata to be recorded.
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void addNewMetadataUpdate(media::Metadata::Type type);
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mutable Mutex mLock;
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sp<MediaPlayerBase> mPlayer;
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sp<MediaPlayerService> mService;
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sp<IMediaPlayerClient> mClient;
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sp<AudioOutput> mAudioOutput;
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pid_t mPid;
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status_t mStatus;
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bool mLoop;
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int32_t mConnId;
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int mAudioSessionId;
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// Metadata filters.
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media::Metadata::Filter mMetadataAllow; // protected by mLock
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media::Metadata::Filter mMetadataDrop; // protected by mLock
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// Metadata updated. For each MEDIA_INFO_METADATA_UPDATE
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// notification we try to update mMetadataUpdated which is a
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// set: no duplicate.
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// getMetadata clears this set.
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media::Metadata::Filter mMetadataUpdated; // protected by mLock
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#if CALLBACK_ANTAGONIZER
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Antagonizer* mAntagonizer;
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#endif
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virtual status_t setParameters(const String8& params);
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};
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// ----------------------------------------------------------------------------
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MediaPlayerService();
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virtual ~MediaPlayerService();
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mutable Mutex mLock;
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SortedVector< wp<Client> > mClients;
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SortedVector< wp<MediaRecorderClient> > mMediaRecorderClients;
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int32_t mNextConnId;
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sp<IOMX> mOMX;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_MEDIAPLAYERSERVICE_H
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