diff options
Diffstat (limited to 'audio/A2dpAudioInterface.h')
-rw-r--r-- | audio/A2dpAudioInterface.h | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/audio/A2dpAudioInterface.h b/audio/A2dpAudioInterface.h new file mode 100644 index 0000000..dbe2c6a --- /dev/null +++ b/audio/A2dpAudioInterface.h @@ -0,0 +1,138 @@ +/* + * Copyright (C) 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 A2DP_AUDIO_HARDWARE_H +#define A2DP_AUDIO_HARDWARE_H + +#include <stdint.h> +#include <sys/types.h> + +#include <utils/threads.h> + +#include <hardware_legacy/AudioHardwareBase.h> + + +namespace android { + +class A2dpAudioInterface : public AudioHardwareBase +{ + class A2dpAudioStreamOut; + +public: + A2dpAudioInterface(AudioHardwareInterface* hw); + virtual ~A2dpAudioInterface(); + virtual status_t initCheck(); + + virtual status_t setVoiceVolume(float volume); + virtual status_t setMasterVolume(float volume); + + virtual status_t setMode(int mode); + + // mic mute + virtual status_t setMicMute(bool state); + virtual status_t getMicMute(bool* state); + + virtual status_t setParameters(const String8& keyValuePairs); + virtual String8 getParameters(const String8& keys); + + virtual size_t getInputBufferSize(uint32_t sampleRate, int format, int channelCount); + + // create I/O streams + virtual AudioStreamOut* openOutputStream( + uint32_t devices, + int *format=0, + uint32_t *channels=0, + uint32_t *sampleRate=0, + status_t *status=0); + virtual void closeOutputStream(AudioStreamOut* out); + + virtual AudioStreamIn* openInputStream( + uint32_t devices, + int *format, + uint32_t *channels, + uint32_t *sampleRate, + status_t *status, + AudioSystem::audio_in_acoustics acoustics); + virtual void closeInputStream(AudioStreamIn* in); +// static AudioHardwareInterface* createA2dpInterface(); + +protected: + virtual status_t dump(int fd, const Vector<String16>& args); + +private: + class A2dpAudioStreamOut : public AudioStreamOut { + public: + A2dpAudioStreamOut(); + virtual ~A2dpAudioStreamOut(); + status_t set(uint32_t device, + int *pFormat, + uint32_t *pChannels, + uint32_t *pRate); + virtual uint32_t sampleRate() const { return 44100; } + // SBC codec wants a multiple of 512 + virtual size_t bufferSize() const { return 512 * 20; } + virtual uint32_t channels() const { return AudioSystem::CHANNEL_OUT_STEREO; } + virtual int format() const { return AudioSystem::PCM_16_BIT; } + virtual uint32_t latency() const { return ((1000*bufferSize())/frameSize())/sampleRate() + 200; } + virtual status_t setVolume(float left, float right) { return INVALID_OPERATION; } + virtual ssize_t write(const void* buffer, size_t bytes); + status_t standby(); + virtual status_t dump(int fd, const Vector<String16>& args); + virtual status_t setParameters(const String8& keyValuePairs); + virtual String8 getParameters(const String8& keys); + virtual status_t getRenderPosition(uint32_t *dspFrames); + + private: + friend class A2dpAudioInterface; + status_t init(); + status_t close(); + status_t close_l(); + status_t setAddress(const char* address); + status_t setBluetoothEnabled(bool enabled); + status_t setSuspended(bool onOff); + status_t standby_l(); + + private: + int mFd; + bool mStandby; + int mStartCount; + int mRetryCount; + char mA2dpAddress[20]; + void* mData; + Mutex mLock; + bool mBluetoothEnabled; + uint32_t mDevice; + bool mClosing; + bool mSuspended; + nsecs_t mLastWriteTime; + uint32_t mBufferDurationUs; + }; + + friend class A2dpAudioStreamOut; + + A2dpAudioStreamOut* mOutput; + AudioHardwareInterface *mHardwareInterface; + char mA2dpAddress[20]; + bool mBluetoothEnabled; + bool mSuspended; +}; + + +// ---------------------------------------------------------------------------- + +}; // namespace android + +#endif // A2DP_AUDIO_HARDWARE_H |