1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/*
* Copyright (C) 2007 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_MEDIAPLAYERINTERFACE_H
#define ANDROID_MEDIAPLAYERINTERFACE_H
#ifdef __cplusplus
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/KeyedVector.h>
#include <utils/String8.h>
#include <utils/RefBase.h>
#include <media/mediaplayer.h>
#include <media/AudioSystem.h>
#include <media/Metadata.h>
namespace android {
class Parcel;
class Surface;
class ISurfaceTexture;
template<typename T> class SortedVector;
enum player_type {
PV_PLAYER = 1,
SONIVOX_PLAYER = 2,
STAGEFRIGHT_PLAYER = 3,
NU_PLAYER = 4,
// Test players are available only in the 'test' and 'eng' builds.
// The shared library with the test player is passed passed as an
// argument to the 'test:' url in the setDataSource call.
TEST_PLAYER = 5,
};
#define DEFAULT_AUDIOSINK_BUFFERCOUNT 4
#define DEFAULT_AUDIOSINK_BUFFERSIZE 1200
#define DEFAULT_AUDIOSINK_SAMPLERATE 44100
// callback mechanism for passing messages to MediaPlayer object
typedef void (*notify_callback_f)(void* cookie,
int msg, int ext1, int ext2, const Parcel *obj);
// abstract base class - use MediaPlayerInterface
class MediaPlayerBase : public RefBase
{
public:
// AudioSink: abstraction layer for audio output
class AudioSink : public RefBase {
public:
// Callback returns the number of bytes actually written to the buffer.
typedef size_t (*AudioCallback)(
AudioSink *audioSink, void *buffer, size_t size, void *cookie);
virtual ~AudioSink() {}
virtual bool ready() const = 0; // audio output is open and ready
virtual bool realtime() const = 0; // audio output is real-time output
virtual ssize_t bufferSize() const = 0;
virtual ssize_t frameCount() const = 0;
virtual ssize_t channelCount() const = 0;
virtual ssize_t frameSize() const = 0;
virtual uint32_t latency() const = 0;
virtual float msecsPerFrame() const = 0;
virtual status_t getPosition(uint32_t *position) = 0;
virtual int getSessionId() = 0;
// If no callback is specified, use the "write" API below to submit
// audio data.
virtual status_t open(
uint32_t sampleRate, int channelCount,
int format=AUDIO_FORMAT_PCM_16_BIT,
int bufferCount=DEFAULT_AUDIOSINK_BUFFERCOUNT,
AudioCallback cb = NULL,
void *cookie = NULL) = 0;
virtual void start() = 0;
virtual ssize_t write(const void* buffer, size_t size) = 0;
virtual void stop() = 0;
virtual void flush() = 0;
virtual void pause() = 0;
virtual void close() = 0;
};
MediaPlayerBase() : mCookie(0), mNotify(0) {}
virtual ~MediaPlayerBase() {}
virtual status_t initCheck() = 0;
virtual bool hardwareOutput() = 0;
virtual status_t setDataSource(
const char *url,
const KeyedVector<String8, String8> *headers = NULL) = 0;
virtual status_t setDataSource(int fd, int64_t offset, int64_t length) = 0;
virtual status_t setDataSource(const sp<IStreamSource> &source) {
return INVALID_OPERATION;
}
// pass the buffered Surface to the media player service
virtual status_t setVideoSurface(const sp<Surface>& surface) = 0;
// pass the buffered ISurfaceTexture to the media player service
virtual status_t setVideoSurfaceTexture(
const sp<ISurfaceTexture>& surfaceTexture) = 0;
virtual status_t prepare() = 0;
virtual status_t prepareAsync() = 0;
virtual status_t start() = 0;
virtual status_t stop() = 0;
virtual status_t pause() = 0;
virtual bool isPlaying() = 0;
virtual status_t seekTo(int msec) = 0;
virtual status_t getCurrentPosition(int *msec) = 0;
virtual status_t getDuration(int *msec) = 0;
virtual status_t reset() = 0;
virtual status_t setLooping(int loop) = 0;
virtual player_type playerType() = 0;
// Invoke a generic method on the player by using opaque parcels
// for the request and reply.
//
// @param request Parcel that is positioned at the start of the
// data sent by the java layer.
// @param[out] reply Parcel to hold the reply data. Cannot be null.
// @return OK if the call was successful.
virtual status_t invoke(const Parcel& request, Parcel *reply) = 0;
// The Client in the MetadataPlayerService calls this method on
// the native player to retrieve all or a subset of metadata.
//
// @param ids SortedList of metadata ID to be fetch. If empty, all
// the known metadata should be returned.
// @param[inout] records Parcel where the player appends its metadata.
// @return OK if the call was successful.
virtual status_t getMetadata(const media::Metadata::Filter& ids,
Parcel *records) {
return INVALID_OPERATION;
};
void setNotifyCallback(
void* cookie, notify_callback_f notifyFunc) {
Mutex::Autolock autoLock(mNotifyLock);
mCookie = cookie; mNotify = notifyFunc;
}
void sendEvent(int msg, int ext1=0, int ext2=0,
const Parcel *obj=NULL) {
Mutex::Autolock autoLock(mNotifyLock);
if (mNotify) mNotify(mCookie, msg, ext1, ext2, obj);
}
private:
friend class MediaPlayerService;
Mutex mNotifyLock;
void* mCookie;
notify_callback_f mNotify;
};
// Implement this class for media players that use the AudioFlinger software mixer
class MediaPlayerInterface : public MediaPlayerBase
{
public:
virtual ~MediaPlayerInterface() { }
virtual bool hardwareOutput() { return false; }
virtual void setAudioSink(const sp<AudioSink>& audioSink) { mAudioSink = audioSink; }
protected:
sp<AudioSink> mAudioSink;
};
// Implement this class for media players that output audio directly to hardware
class MediaPlayerHWInterface : public MediaPlayerBase
{
public:
virtual ~MediaPlayerHWInterface() {}
virtual bool hardwareOutput() { return true; }
virtual status_t setVolume(float leftVolume, float rightVolume) = 0;
virtual status_t setAudioStreamType(int streamType) = 0;
};
}; // namespace android
#endif // __cplusplus
#endif // ANDROID_MEDIAPLAYERINTERFACE_H
|
