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/*
* Copyright (C) 2015 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.
*/
#define LOG_TAG "APM::AudioOutputDescriptor"
//#define LOG_NDEBUG 0
#include "AudioOutputDescriptor.h"
#include "IOProfile.h"
#include "AudioGain.h"
#include "HwModule.h"
#include <media/AudioPolicy.h>
namespace android {
AudioOutputDescriptor::AudioOutputDescriptor(
const sp<IOProfile>& profile)
: mId(0), mIoHandle(0), mLatency(0),
mFlags((audio_output_flags_t)0), mDevice(AUDIO_DEVICE_NONE), mPolicyMix(NULL),
mPatchHandle(0),
mOutput1(0), mOutput2(0), mProfile(profile), mDirectOpenCount(0)
{
// clear usage count for all stream types
for (int i = 0; i < AUDIO_STREAM_CNT; i++) {
mRefCount[i] = 0;
mCurVolume[i] = -1.0;
mMuteCount[i] = 0;
mStopTime[i] = 0;
}
for (int i = 0; i < NUM_STRATEGIES; i++) {
mStrategyMutedByDevice[i] = false;
}
if (profile != NULL) {
mFlags = (audio_output_flags_t)profile->mFlags;
mSamplingRate = profile->pickSamplingRate();
mFormat = profile->pickFormat();
mChannelMask = profile->pickChannelMask();
if (profile->mGains.size() > 0) {
profile->mGains[0]->getDefaultConfig(&mGain);
}
}
}
audio_devices_t AudioOutputDescriptor::device() const
{
if (isDuplicated()) {
return (audio_devices_t)(mOutput1->mDevice | mOutput2->mDevice);
} else {
return mDevice;
}
}
void AudioOutputDescriptor::setIoHandle(audio_io_handle_t ioHandle)
{
mId = AudioPort::getNextUniqueId();
mIoHandle = ioHandle;
}
uint32_t AudioOutputDescriptor::latency()
{
if (isDuplicated()) {
return (mOutput1->mLatency > mOutput2->mLatency) ? mOutput1->mLatency : mOutput2->mLatency;
} else {
return mLatency;
}
}
bool AudioOutputDescriptor::sharesHwModuleWith(
const sp<AudioOutputDescriptor> outputDesc)
{
if (isDuplicated()) {
return mOutput1->sharesHwModuleWith(outputDesc) || mOutput2->sharesHwModuleWith(outputDesc);
} else if (outputDesc->isDuplicated()){
return sharesHwModuleWith(outputDesc->mOutput1) || sharesHwModuleWith(outputDesc->mOutput2);
} else {
return (mProfile->mModule == outputDesc->mProfile->mModule);
}
}
void AudioOutputDescriptor::changeRefCount(audio_stream_type_t stream,
int delta)
{
// forward usage count change to attached outputs
if (isDuplicated()) {
mOutput1->changeRefCount(stream, delta);
mOutput2->changeRefCount(stream, delta);
}
if ((delta + (int)mRefCount[stream]) < 0) {
ALOGW("changeRefCount() invalid delta %d for stream %d, refCount %d",
delta, stream, mRefCount[stream]);
mRefCount[stream] = 0;
return;
}
mRefCount[stream] += delta;
ALOGV("changeRefCount() stream %d, count %d", stream, mRefCount[stream]);
}
audio_devices_t AudioOutputDescriptor::supportedDevices()
{
if (isDuplicated()) {
return (audio_devices_t)(mOutput1->supportedDevices() | mOutput2->supportedDevices());
} else {
return mProfile->mSupportedDevices.types() ;
}
}
bool AudioOutputDescriptor::isActive(uint32_t inPastMs) const
{
nsecs_t sysTime = 0;
if (inPastMs != 0) {
sysTime = systemTime();
}
for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) {
if (i == AUDIO_STREAM_PATCH) {
continue;
}
if (isStreamActive((audio_stream_type_t)i, inPastMs, sysTime)) {
return true;
}
}
return false;
}
bool AudioOutputDescriptor::isStreamActive(audio_stream_type_t stream,
uint32_t inPastMs,
nsecs_t sysTime) const
{
if (mRefCount[stream] != 0) {
return true;
}
if (inPastMs == 0) {
return false;
}
if (sysTime == 0) {
sysTime = systemTime();
}
if (ns2ms(sysTime - mStopTime[stream]) < inPastMs) {
return true;
}
return false;
}
void AudioOutputDescriptor::toAudioPortConfig(
struct audio_port_config *dstConfig,
const struct audio_port_config *srcConfig) const
{
ALOG_ASSERT(!isDuplicated(), "toAudioPortConfig() called on duplicated output %d", mIoHandle);
dstConfig->config_mask = AUDIO_PORT_CONFIG_SAMPLE_RATE|AUDIO_PORT_CONFIG_CHANNEL_MASK|
AUDIO_PORT_CONFIG_FORMAT|AUDIO_PORT_CONFIG_GAIN;
if (srcConfig != NULL) {
dstConfig->config_mask |= srcConfig->config_mask;
}
AudioPortConfig::toAudioPortConfig(dstConfig, srcConfig);
dstConfig->id = mId;
dstConfig->role = AUDIO_PORT_ROLE_SOURCE;
dstConfig->type = AUDIO_PORT_TYPE_MIX;
dstConfig->ext.mix.hw_module = mProfile->mModule->mHandle;
dstConfig->ext.mix.handle = mIoHandle;
dstConfig->ext.mix.usecase.stream = AUDIO_STREAM_DEFAULT;
}
void AudioOutputDescriptor::toAudioPort(
struct audio_port *port) const
{
ALOG_ASSERT(!isDuplicated(), "toAudioPort() called on duplicated output %d", mIoHandle);
mProfile->toAudioPort(port);
port->id = mId;
toAudioPortConfig(&port->active_config);
port->ext.mix.hw_module = mProfile->mModule->mHandle;
port->ext.mix.handle = mIoHandle;
port->ext.mix.latency_class =
mFlags & AUDIO_OUTPUT_FLAG_FAST ? AUDIO_LATENCY_LOW : AUDIO_LATENCY_NORMAL;
}
status_t AudioOutputDescriptor::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, " ID: %d\n", mId);
result.append(buffer);
snprintf(buffer, SIZE, " Sampling rate: %d\n", mSamplingRate);
result.append(buffer);
snprintf(buffer, SIZE, " Format: %08x\n", mFormat);
result.append(buffer);
snprintf(buffer, SIZE, " Channels: %08x\n", mChannelMask);
result.append(buffer);
snprintf(buffer, SIZE, " Latency: %d\n", mLatency);
result.append(buffer);
snprintf(buffer, SIZE, " Flags %08x\n", mFlags);
result.append(buffer);
snprintf(buffer, SIZE, " Devices %08x\n", device());
result.append(buffer);
snprintf(buffer, SIZE, " Stream volume refCount muteCount\n");
result.append(buffer);
for (int i = 0; i < (int)AUDIO_STREAM_CNT; i++) {
snprintf(buffer, SIZE, " %02d %.03f %02d %02d\n",
i, mCurVolume[i], mRefCount[i], mMuteCount[i]);
result.append(buffer);
}
write(fd, result.string(), result.size());
return NO_ERROR;
}
}; //namespace android
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