/*
**
** Copyright 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_MEDIAPLAYERSERVICE_H
#define ANDROID_MEDIAPLAYERSERVICE_H
#include <utils.h>
#include <utils/KeyedVector.h>
#include <ui/SurfaceComposerClient.h>
#include <media/IMediaPlayerService.h>
#include <media/MediaPlayerInterface.h>
namespace android {
class IMediaRecorder;
class IMediaMetadataRetriever;
#define CALLBACK_ANTAGONIZER 0
#if CALLBACK_ANTAGONIZER
class Antagonizer {
public:
Antagonizer(notify_callback_f cb, void* client);
void start() { mActive = true; }
void stop() { mActive = false; }
void kill();
private:
static const int interval;
Antagonizer();
static int callbackThread(void* cookie);
Mutex mLock;
Condition mCondition;
bool mExit;
bool mActive;
void* mClient;
notify_callback_f mCb;
};
#endif
class MediaPlayerService : public BnMediaPlayerService
{
class Client;
class AudioOutput : public MediaPlayerBase::AudioSink
{
public:
AudioOutput();
virtual ~AudioOutput();
virtual bool ready() const { return mTrack != NULL; }
virtual bool realtime() const { return true; }
virtual ssize_t bufferSize() const;
virtual ssize_t frameCount() const;
virtual ssize_t channelCount() const;
virtual ssize_t frameSize() const;
virtual uint32_t latency() const;
virtual float msecsPerFrame() const;
virtual status_t open(uint32_t sampleRate, int channelCount, int format, int bufferCount=4);
virtual void start();
virtual ssize_t write(const void* buffer, size_t size);
virtual void stop();
virtual void flush();
virtual void pause();
virtual void close();
void setAudioStreamType(int streamType) { mStreamType = streamType; }
void setVolume(float left, float right);
virtual status_t dump(int fd, const Vector<String16>& args) const;
static bool isOnEmulator();
static int getMinBufferCount();
private:
static void setMinBufferCount();
AudioTrack* mTrack;
int mStreamType;
float mLeftVolume;
float mRightVolume;
float mMsecsPerFrame;
uint32_t mLatency;
// TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
static const uint32_t kAudioVideoDelayMs;
static bool mIsOnEmulator;
static int mMinBufferCount; // 12 for emulator; otherwise 4
};
class AudioCache : public MediaPlayerBase::AudioSink
{
public:
AudioCache(const char* name);
virtual ~AudioCache() {}
virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); }
virtual bool realtime() const { return false; }
virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; }
virtual ssize_t frameCount() const { return mFrameCount; }
virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; }
virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AudioSystem::PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); }
virtual uint32_t latency() const;
virtual float msecsPerFrame() const;
virtual status_t open(uint32_t sampleRate, int channelCount, int format, int bufferCount=1);
virtual void start() {}
virtual ssize_t write(const void* buffer, size_t size);
virtual void stop() {}
virtual void flush() {}
virtual void pause() {}
virtual void close() {}
void setAudioStreamType(int streamType) {}
void setVolume(float left, float right) {}
uint32_t sampleRate() const { return mSampleRate; }
uint32_t format() const { return (uint32_t)mFormat; }
size_t size() const { return mSize; }
status_t wait();
sp<IMemoryHeap> getHeap() const { return mHeap; }
static void notify(void* cookie, int msg, int ext1, int ext2);
virtual status_t dump(int fd, const Vector<String16>& args) const;
private:
AudioCache();
Mutex mLock;
Condition mSignal;
sp<MemoryHeapBase> mHeap;
float mMsecsPerFrame;
uint16_t mChannelCount;
uint16_t mFormat;
ssize_t mFrameCount;
uint32_t mSampleRate;
uint32_t mSize;
int mError;
bool mCommandComplete;
};
public:
static void instantiate();
// IMediaPlayerService interface
virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid);
virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid);
// House keeping for media player clients
virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url);
virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length);
virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat);
virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat);
virtual status_t dump(int fd, const Vector<String16>& args);
void removeClient(wp<Client> client);
private:
class Client : public BnMediaPlayer {
// IMediaPlayer interface
virtual void disconnect();
virtual status_t setVideoSurface(const sp<ISurface>& surface);
virtual status_t prepareAsync();
virtual status_t start();
virtual status_t stop();
virtual status_t pause();
virtual status_t isPlaying(bool* state);
virtual status_t seekTo(int msec);
virtual status_t getCurrentPosition(int* msec);
virtual status_t getDuration(int* msec);
virtual status_t reset();
virtual status_t setAudioStreamType(int type);
virtual status_t setLooping(int loop);
virtual status_t setVolume(float leftVolume, float rightVolume);
sp<MediaPlayerBase> createPlayer(player_type playerType);
status_t setDataSource(const char *url);
status_t setDataSource(int fd, int64_t offset, int64_t length);
static void notify(void* cookie, int msg, int ext1, int ext2);
pid_t pid() const { return mPid; }
virtual status_t dump(int fd, const Vector<String16>& args) const;
private:
friend class MediaPlayerService;
Client( const sp<MediaPlayerService>& service,
pid_t pid,
int32_t connId,
const sp<IMediaPlayerClient>& client);
Client();
virtual ~Client();
void deletePlayer();
sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; }
mutable Mutex mLock;
sp<MediaPlayerBase> mPlayer;
sp<MediaPlayerService> mService;
sp<IMediaPlayerClient> mClient;
sp<AudioOutput> mAudioOutput;
pid_t mPid;
status_t mStatus;
bool mLoop;
int32_t mConnId;
#if CALLBACK_ANTAGONIZER
Antagonizer* mAntagonizer;
#endif
};
// ----------------------------------------------------------------------------
MediaPlayerService();
virtual ~MediaPlayerService();
mutable Mutex mLock;
SortedVector< wp<Client> > mClients;
int32_t mNextConnId;
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_MEDIAPLAYERSERVICE_H