/* ** ** 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/AudioHardwareBase.h> namespace android { // ---------------------------------------------------------------------------- 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); 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