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/*
**
** Copyright 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_AUDIO_HARDWARE_GENERIC_H
#define ANDROID_AUDIO_HARDWARE_GENERIC_H
#include <stdint.h>
#include <sys/types.h>
#include <utils/threads.h>
#include <hardware_legacy/AudioSystemLegacy.h>
#include <hardware_legacy/AudioHardwareBase.h>
namespace android_audio_legacy {
using android::Mutex;
using android::AutoMutex;
// ----------------------------------------------------------------------------
class AudioHardwareGeneric;
class AudioStreamOutGeneric : public AudioStreamOut {
public:
AudioStreamOutGeneric() : mAudioHardware(0), mFd(-1) {}
virtual ~AudioStreamOutGeneric();
virtual status_t set(
AudioHardwareGeneric *hw,
int mFd,
uint32_t devices,
int *pFormat,
uint32_t *pChannels,
uint32_t *pRate);
virtual uint32_t sampleRate() const { return 44100; }
virtual size_t bufferSize() const { return 4096; }
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 20; }
virtual status_t setVolume(float left, float right) { return INVALID_OPERATION; }
virtual ssize_t write(const void* buffer, size_t bytes);
virtual 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:
AudioHardwareGeneric *mAudioHardware;
Mutex mLock;
int mFd;
uint32_t mDevice;
};
class AudioStreamInGeneric : public AudioStreamIn {
public:
AudioStreamInGeneric() : mAudioHardware(0), mFd(-1) {}
virtual ~AudioStreamInGeneric();
virtual status_t set(
AudioHardwareGeneric *hw,
int mFd,
uint32_t devices,
int *pFormat,
uint32_t *pChannels,
uint32_t *pRate,
AudioSystem::audio_in_acoustics acoustics);
virtual uint32_t sampleRate() const { return 8000; }
virtual size_t bufferSize() const { return 320; }
virtual uint32_t channels() const { return AudioSystem::CHANNEL_IN_MONO; }
virtual int format() const { return AudioSystem::PCM_16_BIT; }
virtual status_t setGain(float gain) { return INVALID_OPERATION; }
virtual ssize_t read(void* buffer, ssize_t bytes);
virtual status_t dump(int fd, const Vector<String16>& args);
virtual status_t standby() { return NO_ERROR; }
virtual status_t setParameters(const String8& keyValuePairs);
virtual String8 getParameters(const String8& keys);
virtual unsigned int getInputFramesLost() const { return 0; }
virtual status_t addAudioEffect(effect_handle_t effect) { return NO_ERROR; }
virtual status_t removeAudioEffect(effect_handle_t effect) { return NO_ERROR; }
private:
AudioHardwareGeneric *mAudioHardware;
Mutex mLock;
int mFd;
uint32_t mDevice;
};
class AudioHardwareGeneric : public AudioHardwareBase
{
public:
AudioHardwareGeneric();
virtual ~AudioHardwareGeneric();
virtual status_t initCheck();
virtual status_t setVoiceVolume(float volume);
virtual status_t setMasterVolume(float volume);
// mic mute
virtual status_t setMicMute(bool state);
virtual status_t getMicMute(bool* state);
// 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);
void closeOutputStream(AudioStreamOutGeneric* out);
void closeInputStream(AudioStreamInGeneric* in);
protected:
virtual status_t dump(int fd, const Vector<String16>& args);
private:
status_t dumpInternals(int fd, const Vector<String16>& args);
Mutex mLock;
AudioStreamOutGeneric *mOutput;
AudioStreamInGeneric *mInput;
int mFd;
bool mMicMute;
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_AUDIO_HARDWARE_GENERIC_H
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