140 lines
4.4 KiB
C++
140 lines
4.4 KiB
C++
/*
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**
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** Copyright 2007, The Android Open Source Project
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#ifndef ANDROID_AUDIO_HARDWARE_GENERIC_H
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#define ANDROID_AUDIO_HARDWARE_GENERIC_H
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#include <stdint.h>
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#include <sys/types.h>
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#include <utils/threads.h>
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#include <hardware/AudioHardwareBase.h>
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namespace android {
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// ----------------------------------------------------------------------------
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class AudioHardwareGeneric;
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class AudioStreamOutGeneric : public AudioStreamOut {
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public:
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AudioStreamOutGeneric() : mAudioHardware(0), mFd(-1) {}
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virtual ~AudioStreamOutGeneric();
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virtual status_t set(
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AudioHardwareGeneric *hw,
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int mFd,
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int format,
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int channelCount,
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uint32_t sampleRate);
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virtual uint32_t sampleRate() const { return 44100; }
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virtual size_t bufferSize() const { return 4096; }
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virtual int channelCount() const { return 2; }
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virtual int format() const { return AudioSystem::PCM_16_BIT; }
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virtual uint32_t latency() const { return 0; }
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virtual status_t setVolume(float volume) { return INVALID_OPERATION; }
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virtual ssize_t write(const void* buffer, size_t bytes);
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virtual status_t dump(int fd, const Vector<String16>& args);
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private:
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AudioHardwareGeneric *mAudioHardware;
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Mutex mLock;
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int mFd;
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};
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class AudioStreamInGeneric : public AudioStreamIn {
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public:
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AudioStreamInGeneric() : mAudioHardware(0), mFd(-1) {}
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virtual ~AudioStreamInGeneric();
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virtual status_t set(
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AudioHardwareGeneric *hw,
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int mFd,
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int format,
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int channelCount,
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uint32_t sampleRate);
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uint32_t sampleRate() const { return 8000; }
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virtual size_t bufferSize() const { return 320; }
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virtual int channelCount() const { return 1; }
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virtual int format() const { return AudioSystem::PCM_16_BIT; }
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virtual status_t setGain(float gain) { return INVALID_OPERATION; }
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virtual ssize_t read(void* buffer, ssize_t bytes);
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virtual status_t dump(int fd, const Vector<String16>& args);
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virtual status_t standby() { return NO_ERROR; }
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private:
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AudioHardwareGeneric *mAudioHardware;
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Mutex mLock;
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int mFd;
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};
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class AudioHardwareGeneric : public AudioHardwareBase
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{
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public:
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AudioHardwareGeneric();
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virtual ~AudioHardwareGeneric();
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virtual status_t initCheck();
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virtual status_t standby();
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virtual status_t setVoiceVolume(float volume);
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virtual status_t setMasterVolume(float volume);
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// mic mute
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virtual status_t setMicMute(bool state);
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virtual status_t getMicMute(bool* state);
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virtual status_t setParameter(const char* key, const char* value)
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{ return NO_ERROR; }
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// create I/O streams
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virtual AudioStreamOut* openOutputStream(
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int format=0,
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int channelCount=0,
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uint32_t sampleRate=0,
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status_t *status=0);
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virtual AudioStreamIn* openInputStream(
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int format,
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int channelCount,
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uint32_t sampleRate,
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status_t *status);
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void closeOutputStream(AudioStreamOutGeneric* out);
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void closeInputStream(AudioStreamInGeneric* in);
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protected:
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virtual status_t doRouting() { return NO_ERROR; }
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virtual status_t dump(int fd, const Vector<String16>& args);
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private:
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status_t dumpInternals(int fd, const Vector<String16>& args);
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Mutex mLock;
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AudioStreamOutGeneric *mOutput;
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AudioStreamInGeneric *mInput;
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int mFd;
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bool mMicMute;
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};
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// ----------------------------------------------------------------------------
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}; // namespace android
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#endif // ANDROID_AUDIO_HARDWARE_GENERIC_H
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