2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef A2DP_AUDIO_HARDWARE_H
18 #define A2DP_AUDIO_HARDWARE_H
21 #include <sys/types.h>
23 #include <utils/threads.h>
25 #include <hardware_legacy/AudioHardwareBase.h>
28 namespace android_audio_legacy {
31 class A2dpAudioInterface : public AudioHardwareBase
33 class A2dpAudioStreamOut;
36 A2dpAudioInterface(AudioHardwareInterface* hw);
37 virtual ~A2dpAudioInterface();
38 virtual status_t initCheck();
40 virtual status_t setVoiceVolume(float volume);
41 virtual status_t setMasterVolume(float volume);
43 virtual status_t setMode(int mode);
46 virtual status_t setMicMute(bool state);
47 virtual status_t getMicMute(bool* state);
49 virtual status_t setParameters(const String8& keyValuePairs);
50 virtual String8 getParameters(const String8& keys);
52 virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount);
55 virtual AudioStreamOut* openOutputStream(
59 uint32_t *sampleRate=0,
61 virtual void closeOutputStream(AudioStreamOut* out);
63 virtual AudioStreamIn* openInputStream(
69 AudioSystem::audio_in_acoustics acoustics);
70 virtual void closeInputStream(AudioStreamIn* in);
71 // static AudioHardwareInterface* createA2dpInterface();
74 virtual status_t dump(int fd, const Vector<String16>& args);
77 class A2dpAudioStreamOut : public AudioStreamOut {
80 virtual ~A2dpAudioStreamOut();
81 status_t set(uint32_t device,
85 virtual uint32_t sampleRate() const { return 44100; }
86 // SBC codec wants a multiple of 512
87 virtual size_t bufferSize() const { return 512 * 20; }
88 virtual uint32_t channels() const { return AudioSystem::CHANNEL_OUT_STEREO; }
89 virtual int format() const { return AudioSystem::PCM_16_BIT; }
90 virtual uint32_t latency() const { return ((1000*bufferSize())/frameSize())/sampleRate() + 200; }
91 virtual status_t setVolume(float left, float right) { return INVALID_OPERATION; }
92 virtual ssize_t write(const void* buffer, size_t bytes);
94 virtual status_t dump(int fd, const Vector<String16>& args);
95 virtual status_t setParameters(const String8& keyValuePairs);
96 virtual String8 getParameters(const String8& keys);
97 virtual status_t getRenderPosition(uint32_t *dspFrames);
100 friend class A2dpAudioInterface;
104 status_t setAddress(const char* address);
105 status_t setBluetoothEnabled(bool enabled);
106 status_t setSuspended(bool onOff);
107 status_t standby_l();
114 char mA2dpAddress[20];
117 bool mBluetoothEnabled;
121 nsecs_t mLastWriteTime;
122 uint32_t mBufferDurationUs;
125 friend class A2dpAudioStreamOut;
127 A2dpAudioStreamOut* mOutput;
128 AudioHardwareInterface *mHardwareInterface;
129 char mA2dpAddress[20];
130 bool mBluetoothEnabled;
135 // ----------------------------------------------------------------------------
137 }; // namespace android
139 #endif // A2DP_AUDIO_HARDWARE_H