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/*
* 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.
*/
#include <math.h>
#define LOG_NDEBUG 0
#define LOG_TAG "A2dpAudioInterface"
#include <utils/Log.h>
#include <utils/String8.h>
#include "A2dpAudioInterface.h"
#include "audio/liba2dp.h"
namespace android {
// ----------------------------------------------------------------------------
A2dpAudioInterface::A2dpAudioInterface() :
mOutput(0)
{
}
A2dpAudioInterface::~A2dpAudioInterface()
{
delete mOutput;
}
status_t A2dpAudioInterface::initCheck()
{
return 0;
}
AudioStreamOut* A2dpAudioInterface::openOutputStream(
int format, int channelCount, uint32_t sampleRate, status_t *status)
{
LOGD("A2dpAudioInterface::openOutputStream %d, %d, %d\n", format, channelCount, sampleRate);
Mutex::Autolock lock(mLock);
status_t err = 0;
// only one output stream allowed
if (mOutput) {
if (status)
*status = -1;
return NULL;
}
// create new output stream
A2dpAudioStreamOut* out = new A2dpAudioStreamOut();
if ((err = out->set(format, channelCount, sampleRate)) == NO_ERROR) {
mOutput = out;
} else {
delete out;
}
if (status)
*status = err;
return mOutput;
}
AudioStreamIn* A2dpAudioInterface::openInputStream(
int format, int channelCount, uint32_t sampleRate, status_t *status,
AudioSystem::audio_in_acoustics acoustics)
{
if (status)
*status = -1;
return NULL;
}
status_t A2dpAudioInterface::setMicMute(bool state)
{
return 0;
}
status_t A2dpAudioInterface::getMicMute(bool* state)
{
return 0;
}
status_t A2dpAudioInterface::setParameter(const char *key, const char *value)
{
LOGD("setParameter %s,%s\n", key, value);
if (!key || !value)
return -EINVAL;
if (strcmp(key, "a2dp_sink_address") == 0) {
return mOutput->setAddress(value);
}
if (strcmp(key, "bluetooth_enabled") == 0 &&
strcmp(value, "false") == 0) {
return mOutput->close();
}
return 0;
}
status_t A2dpAudioInterface::setVoiceVolume(float v)
{
return 0;
}
status_t A2dpAudioInterface::setMasterVolume(float v)
{
return 0;
}
status_t A2dpAudioInterface::doRouting()
{
return 0;
}
status_t A2dpAudioInterface::dump(int fd, const Vector<String16>& args)
{
return 0;
}
// ----------------------------------------------------------------------------
A2dpAudioInterface::A2dpAudioStreamOut::A2dpAudioStreamOut() :
mFd(-1), mStandby(true), mStartCount(0), mRetryCount(0), mData(NULL)
{
// use any address by default
strncpy(mA2dpAddress, "00:00:00:00:00:00", sizeof(mA2dpAddress));
}
status_t A2dpAudioInterface::A2dpAudioStreamOut::set(
int format, int channels, uint32_t rate)
{
LOGD("A2dpAudioStreamOut::set %d, %d, %d\n", format, channels, 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;
return NO_ERROR;
}
A2dpAudioInterface::A2dpAudioStreamOut::~A2dpAudioStreamOut()
{
close();
}
ssize_t A2dpAudioInterface::A2dpAudioStreamOut::write(const void* buffer, size_t bytes)
{
status_t status = NO_INIT;
size_t remaining = bytes;
if (!mData) {
status = a2dp_init(44100, 2, &mData);
if (status < 0) {
LOGE("a2dp_init failed err: %d\n", status);
mData = NULL;
goto Error;
}
a2dp_set_sink(mData, mA2dpAddress);
}
while (remaining > 0) {
status = a2dp_write(mData, buffer, remaining);
if (status <= 0) {
LOGE("a2dp_write failed err: %d\n", status);
goto Error;
}
remaining -= status;
buffer = ((char *)buffer) + status;
}
mStandby = false;
return bytes;
Error:
// Simulate audio output timing in case of error
usleep(bytes * 1000000 / frameSize() / sampleRate());
return status;
}
status_t A2dpAudioInterface::A2dpAudioStreamOut::standby()
{
int result = 0;
if (!mStandby) {
result = a2dp_stop(mData);
if (result == 0)
mStandby = true;
}
return result;
}
status_t A2dpAudioInterface::A2dpAudioStreamOut::setAddress(const char* address)
{
if (strlen(address) < sizeof(mA2dpAddress))
return -EINVAL;
if (strcmp(address, mA2dpAddress)) {
strcpy(mA2dpAddress, address);
if (mData)
a2dp_set_sink(mData, mA2dpAddress);
}
return NO_ERROR;
}
status_t A2dpAudioInterface::A2dpAudioStreamOut::close()
{
if (mData) {
a2dp_cleanup(mData);
mData = NULL;
}
return NO_ERROR;
}
status_t A2dpAudioInterface::A2dpAudioStreamOut::dump(int fd, const Vector<String16>& args)
{
return NO_ERROR;
}
}; // namespace android
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