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The Android Open Source Project89fa4ad2009-03-03 19:31:44 -08001/*
2**
3** Copyright 2008, The Android Open Source Project
4**
5** Licensed under the Apache License, Version 2.0 (the "License");
6** you may not use this file except in compliance with the License.
7** You may obtain a copy of the License at
8**
9** http://www.apache.org/licenses/LICENSE-2.0
10**
11** Unless required by applicable law or agreed to in writing, software
12** distributed under the License is distributed on an "AS IS" BASIS,
13** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14** See the License for the specific language governing permissions and
15** limitations under the License.
16*/
17
18#ifndef ANDROID_MEDIAPLAYERSERVICE_H
19#define ANDROID_MEDIAPLAYERSERVICE_H
20
21#include <utils.h>
22#include <utils/KeyedVector.h>
23#include <ui/SurfaceComposerClient.h>
24
25#include <media/IMediaPlayerService.h>
26#include <media/MediaPlayerInterface.h>
27
28namespace android {
29
30class IMediaRecorder;
31class IMediaMetadataRetriever;
32
33#define CALLBACK_ANTAGONIZER 0
34#if CALLBACK_ANTAGONIZER
35class Antagonizer {
36public:
37 Antagonizer(notify_callback_f cb, void* client);
38 void start() { mActive = true; }
39 void stop() { mActive = false; }
40 void kill();
41private:
42 static const int interval;
43 Antagonizer();
44 static int callbackThread(void* cookie);
45 Mutex mLock;
46 Condition mCondition;
47 bool mExit;
48 bool mActive;
49 void* mClient;
50 notify_callback_f mCb;
51};
52#endif
53
54class MediaPlayerService : public BnMediaPlayerService
55{
56 class Client;
57
58 class AudioOutput : public MediaPlayerBase::AudioSink
59 {
60 public:
61 AudioOutput();
62 virtual ~AudioOutput();
63
64 virtual bool ready() const { return mTrack != NULL; }
65 virtual bool realtime() const { return true; }
66 virtual ssize_t bufferSize() const;
67 virtual ssize_t frameCount() const;
68 virtual ssize_t channelCount() const;
69 virtual ssize_t frameSize() const;
70 virtual uint32_t latency() const;
71 virtual float msecsPerFrame() const;
72 virtual status_t open(uint32_t sampleRate, int channelCount, int format, int bufferCount=4);
73 virtual void start();
74 virtual ssize_t write(const void* buffer, size_t size);
75 virtual void stop();
76 virtual void flush();
77 virtual void pause();
78 virtual void close();
79 void setAudioStreamType(int streamType) { mStreamType = streamType; }
80 void setVolume(float left, float right);
81 virtual status_t dump(int fd, const Vector<String16>& args) const;
82
83 static bool isOnEmulator();
84 static int getMinBufferCount();
85 private:
86 static void setMinBufferCount();
87
88 AudioTrack* mTrack;
89 int mStreamType;
90 float mLeftVolume;
91 float mRightVolume;
92 float mMsecsPerFrame;
93 uint32_t mLatency;
94
95 // TODO: Find real cause of Audio/Video delay in PV framework and remove this workaround
96 static const uint32_t kAudioVideoDelayMs;
97 static bool mIsOnEmulator;
98 static int mMinBufferCount; // 12 for emulator; otherwise 4
99
100 };
101
102 class AudioCache : public MediaPlayerBase::AudioSink
103 {
104 public:
105 AudioCache(const char* name);
106 virtual ~AudioCache() {}
107
108 virtual bool ready() const { return (mChannelCount > 0) && (mHeap->getHeapID() > 0); }
109 virtual bool realtime() const { return false; }
110 virtual ssize_t bufferSize() const { return frameSize() * mFrameCount; }
111 virtual ssize_t frameCount() const { return mFrameCount; }
112 virtual ssize_t channelCount() const { return (ssize_t)mChannelCount; }
113 virtual ssize_t frameSize() const { return ssize_t(mChannelCount * ((mFormat == AudioSystem::PCM_16_BIT)?sizeof(int16_t):sizeof(u_int8_t))); }
114 virtual uint32_t latency() const;
115 virtual float msecsPerFrame() const;
116 virtual status_t open(uint32_t sampleRate, int channelCount, int format, int bufferCount=1);
117 virtual void start() {}
118 virtual ssize_t write(const void* buffer, size_t size);
119 virtual void stop() {}
120 virtual void flush() {}
121 virtual void pause() {}
122 virtual void close() {}
123 void setAudioStreamType(int streamType) {}
124 void setVolume(float left, float right) {}
125 uint32_t sampleRate() const { return mSampleRate; }
126 uint32_t format() const { return (uint32_t)mFormat; }
127 size_t size() const { return mSize; }
128 status_t wait();
129
130 sp<IMemoryHeap> getHeap() const { return mHeap; }
131
132 static void notify(void* cookie, int msg, int ext1, int ext2);
133 virtual status_t dump(int fd, const Vector<String16>& args) const;
134
135 private:
136 AudioCache();
137
138 Mutex mLock;
139 Condition mSignal;
140 sp<MemoryHeapBase> mHeap;
141 float mMsecsPerFrame;
142 uint16_t mChannelCount;
143 uint16_t mFormat;
144 ssize_t mFrameCount;
145 uint32_t mSampleRate;
146 uint32_t mSize;
147 int mError;
148 bool mCommandComplete;
149 };
150
151public:
152 static void instantiate();
153
154 // IMediaPlayerService interface
155 virtual sp<IMediaRecorder> createMediaRecorder(pid_t pid);
156 virtual sp<IMediaMetadataRetriever> createMetadataRetriever(pid_t pid);
157
158 // House keeping for media player clients
159 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, const char* url);
160 virtual sp<IMediaPlayer> create(pid_t pid, const sp<IMediaPlayerClient>& client, int fd, int64_t offset, int64_t length);
161 virtual sp<IMemory> decode(const char* url, uint32_t *pSampleRate, int* pNumChannels, int* pFormat);
162 virtual sp<IMemory> decode(int fd, int64_t offset, int64_t length, uint32_t *pSampleRate, int* pNumChannels, int* pFormat);
163
164 virtual status_t dump(int fd, const Vector<String16>& args);
165
166 void removeClient(wp<Client> client);
167
168private:
169
170 class Client : public BnMediaPlayer {
171
172 // IMediaPlayer interface
173 virtual void disconnect();
174 virtual status_t setVideoSurface(const sp<ISurface>& surface);
175 virtual status_t prepareAsync();
176 virtual status_t start();
177 virtual status_t stop();
178 virtual status_t pause();
179 virtual status_t isPlaying(bool* state);
180 virtual status_t seekTo(int msec);
181 virtual status_t getCurrentPosition(int* msec);
182 virtual status_t getDuration(int* msec);
183 virtual status_t reset();
184 virtual status_t setAudioStreamType(int type);
185 virtual status_t setLooping(int loop);
186 virtual status_t setVolume(float leftVolume, float rightVolume);
187
188 sp<MediaPlayerBase> createPlayer(player_type playerType);
189 status_t setDataSource(const char *url);
190 status_t setDataSource(int fd, int64_t offset, int64_t length);
191 static void notify(void* cookie, int msg, int ext1, int ext2);
192
193 pid_t pid() const { return mPid; }
194 virtual status_t dump(int fd, const Vector<String16>& args) const;
195
196 private:
197 friend class MediaPlayerService;
198 Client( const sp<MediaPlayerService>& service,
199 pid_t pid,
200 int32_t connId,
201 const sp<IMediaPlayerClient>& client);
202 Client();
203 virtual ~Client();
204
205 void deletePlayer();
206
207 sp<MediaPlayerBase> getPlayer() const { Mutex::Autolock lock(mLock); return mPlayer; }
208
209 mutable Mutex mLock;
210 sp<MediaPlayerBase> mPlayer;
211 sp<MediaPlayerService> mService;
212 sp<IMediaPlayerClient> mClient;
213 sp<AudioOutput> mAudioOutput;
214 pid_t mPid;
215 status_t mStatus;
216 bool mLoop;
217 int32_t mConnId;
218#if CALLBACK_ANTAGONIZER
219 Antagonizer* mAntagonizer;
220#endif
221 };
222
223// ----------------------------------------------------------------------------
224
225 MediaPlayerService();
226 virtual ~MediaPlayerService();
227
228 mutable Mutex mLock;
229 SortedVector< wp<Client> > mClients;
230 int32_t mNextConnId;
231};
232
233// ----------------------------------------------------------------------------
234
235}; // namespace android
236
237#endif // ANDROID_MEDIAPLAYERSERVICE_H
238