replicant-frameworks_native/libs/audioflinger/AudioHardwareGeneric.cpp

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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.
*/
#include <stdint.h>
#include <sys/types.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>
#include <sched.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#define LOG_TAG "AudioHardware"
#include <utils/Log.h>
#include <utils/String8.h>
#include "AudioHardwareGeneric.h"
#include <media/AudioRecord.h>
namespace android {
// ----------------------------------------------------------------------------
static char const * const kAudioDeviceName = "/dev/eac";
// ----------------------------------------------------------------------------
AudioHardwareGeneric::AudioHardwareGeneric()
: mOutput(0), mInput(0), mFd(-1), mMicMute(false)
{
mFd = ::open(kAudioDeviceName, O_RDWR);
}
AudioHardwareGeneric::~AudioHardwareGeneric()
{
if (mFd >= 0) ::close(mFd);
delete mOutput;
delete mInput;
}
status_t AudioHardwareGeneric::initCheck()
{
if (mFd >= 0) {
if (::access(kAudioDeviceName, O_RDWR) == NO_ERROR)
return NO_ERROR;
}
return NO_INIT;
}
AudioStreamOut* AudioHardwareGeneric::openOutputStream(
int format, int channelCount, uint32_t sampleRate, status_t *status)
{
AutoMutex lock(mLock);
// only one output stream allowed
if (mOutput) {
if (status) {
*status = INVALID_OPERATION;
}
return 0;
}
// create new output stream
AudioStreamOutGeneric* out = new AudioStreamOutGeneric();
status_t lStatus = out->set(this, mFd, format, channelCount, sampleRate);
if (status) {
*status = lStatus;
}
if (lStatus == NO_ERROR) {
mOutput = out;
} else {
delete out;
}
return mOutput;
}
void AudioHardwareGeneric::closeOutputStream(AudioStreamOutGeneric* out) {
if (out == mOutput) mOutput = 0;
}
AudioStreamIn* AudioHardwareGeneric::openInputStream(
int inputSource, int format, int channelCount, uint32_t sampleRate,
status_t *status, AudioSystem::audio_in_acoustics acoustics)
{
// check for valid input source
if ((inputSource < AudioRecord::DEFAULT_INPUT) ||
(inputSource >= AudioRecord::NUM_INPUT_SOURCES)) {
return 0;
}
AutoMutex lock(mLock);
// only one input stream allowed
if (mInput) {
if (status) {
*status = INVALID_OPERATION;
}
return 0;
}
// create new output stream
AudioStreamInGeneric* in = new AudioStreamInGeneric();
status_t lStatus = in->set(this, mFd, format, channelCount, sampleRate, acoustics);
if (status) {
*status = lStatus;
}
if (lStatus == NO_ERROR) {
mInput = in;
} else {
delete in;
}
return mInput;
}
void AudioHardwareGeneric::closeInputStream(AudioStreamInGeneric* in) {
if (in == mInput) mInput = 0;
}
status_t AudioHardwareGeneric::setVoiceVolume(float v)
{
// Implement: set voice volume
return NO_ERROR;
}
status_t AudioHardwareGeneric::setMasterVolume(float v)
{
// Implement: set master volume
// return error - software mixer will handle it
return INVALID_OPERATION;
}
status_t AudioHardwareGeneric::setMicMute(bool state)
{
mMicMute = state;
return NO_ERROR;
}
status_t AudioHardwareGeneric::getMicMute(bool* state)
{
*state = mMicMute;
return NO_ERROR;
}
status_t AudioHardwareGeneric::dumpInternals(int fd, const Vector<String16>& args)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
result.append("AudioHardwareGeneric::dumpInternals\n");
snprintf(buffer, SIZE, "\tmFd: %d mMicMute: %s\n", mFd, mMicMute? "true": "false");
result.append(buffer);
::write(fd, result.string(), result.size());
return NO_ERROR;
}
status_t AudioHardwareGeneric::dump(int fd, const Vector<String16>& args)
{
dumpInternals(fd, args);
if (mInput) {
mInput->dump(fd, args);
}
if (mOutput) {
mOutput->dump(fd, args);
}
return NO_ERROR;
}
// ----------------------------------------------------------------------------
status_t AudioStreamOutGeneric::set(
AudioHardwareGeneric *hw,
int fd,
int format,
int channels,
uint32_t rate)
{
// fix up defaults
if (format == 0) format = AudioSystem::PCM_16_BIT;
if (channels == 0) channels = channelCount();
if (rate == 0) rate = sampleRate();
// check values
if ((format != AudioSystem::PCM_16_BIT) ||
(channels != channelCount()) ||
(rate != sampleRate()))
return BAD_VALUE;
mAudioHardware = hw;
mFd = fd;
return NO_ERROR;
}
AudioStreamOutGeneric::~AudioStreamOutGeneric()
{
if (mAudioHardware)
mAudioHardware->closeOutputStream(this);
}
ssize_t AudioStreamOutGeneric::write(const void* buffer, size_t bytes)
{
Mutex::Autolock _l(mLock);
return ssize_t(::write(mFd, buffer, bytes));
}
status_t AudioStreamOutGeneric::standby()
{
// Implement: audio hardware to standby mode
return NO_ERROR;
}
status_t AudioStreamOutGeneric::dump(int fd, const Vector<String16>& args)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "AudioStreamOutGeneric::dump\n");
result.append(buffer);
snprintf(buffer, SIZE, "\tsample rate: %d\n", sampleRate());
result.append(buffer);
snprintf(buffer, SIZE, "\tbuffer size: %d\n", bufferSize());
result.append(buffer);
snprintf(buffer, SIZE, "\tchannel count: %d\n", channelCount());
result.append(buffer);
snprintf(buffer, SIZE, "\tformat: %d\n", format());
result.append(buffer);
snprintf(buffer, SIZE, "\tmAudioHardware: %p\n", mAudioHardware);
result.append(buffer);
snprintf(buffer, SIZE, "\tmFd: %d\n", mFd);
result.append(buffer);
::write(fd, result.string(), result.size());
return NO_ERROR;
}
// ----------------------------------------------------------------------------
// record functions
status_t AudioStreamInGeneric::set(
AudioHardwareGeneric *hw,
int fd,
int format,
int channels,
uint32_t rate,
AudioSystem::audio_in_acoustics acoustics)
{
// FIXME: remove logging
LOGD("AudioStreamInGeneric::set(%p, %d, %d, %d, %u)", hw, fd, format, channels, rate);
// check values
if ((format != AudioSystem::PCM_16_BIT) ||
(channels != channelCount()) ||
(rate != sampleRate())) {
LOGE("Error opening input channel");
return BAD_VALUE;
}
mAudioHardware = hw;
mFd = fd;
return NO_ERROR;
}
AudioStreamInGeneric::~AudioStreamInGeneric()
{
// FIXME: remove logging
LOGD("AudioStreamInGeneric destructor");
if (mAudioHardware)
mAudioHardware->closeInputStream(this);
}
ssize_t AudioStreamInGeneric::read(void* buffer, ssize_t bytes)
{
// FIXME: remove logging
LOGD("AudioStreamInGeneric::read(%p, %d) from fd %d", buffer, bytes, mFd);
AutoMutex lock(mLock);
if (mFd < 0) {
LOGE("Attempt to read from unopened device");
return NO_INIT;
}
return ::read(mFd, buffer, bytes);
}
status_t AudioStreamInGeneric::dump(int fd, const Vector<String16>& args)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "AudioStreamInGeneric::dump\n");
result.append(buffer);
snprintf(buffer, SIZE, "\tsample rate: %d\n", sampleRate());
result.append(buffer);
snprintf(buffer, SIZE, "\tbuffer size: %d\n", bufferSize());
result.append(buffer);
snprintf(buffer, SIZE, "\tchannel count: %d\n", channelCount());
result.append(buffer);
snprintf(buffer, SIZE, "\tformat: %d\n", format());
result.append(buffer);
snprintf(buffer, SIZE, "\tmAudioHardware: %p\n", mAudioHardware);
result.append(buffer);
snprintf(buffer, SIZE, "\tmFd: %d\n", mFd);
result.append(buffer);
::write(fd, result.string(), result.size());
return NO_ERROR;
}
// ----------------------------------------------------------------------------
}; // namespace android