blob: bb3905c34c6474dd18fc297c57dd00470f412f0b [file] [log] [blame]
/*
* Copyright (C) 2009 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 "AudioPolicyService"
//#define LOG_NDEBUG 0
#undef __STRICT_ANSI__
#define __STDINT_LIMITS
#define __STDC_LIMIT_MACROS
#include <stdint.h>
#include <sys/time.h>
#include <binder/IServiceManager.h>
#include <utils/Log.h>
#include <cutils/properties.h>
#include <binder/IPCThreadState.h>
#include <utils/String16.h>
#include <utils/threads.h>
#include "AudioPolicyService.h"
#include <hardware_legacy/AudioPolicyManagerBase.h>
#include <cutils/properties.h>
#include <dlfcn.h>
#include <hardware_legacy/power.h>
// ----------------------------------------------------------------------------
// the sim build doesn't have gettid
#ifndef HAVE_GETTID
# define gettid getpid
#endif
namespace android {
static const char *kDeadlockedString = "AudioPolicyService may be deadlocked\n";
static const char *kCmdDeadlockedString = "AudioPolicyService command thread may be deadlocked\n";
static const int kDumpLockRetries = 50;
static const int kDumpLockSleep = 20000;
static bool checkPermission() {
#ifndef HAVE_ANDROID_OS
return true;
#endif
if (getpid() == IPCThreadState::self()->getCallingPid()) return true;
bool ok = checkCallingPermission(String16("android.permission.MODIFY_AUDIO_SETTINGS"));
if (!ok) LOGE("Request requires android.permission.MODIFY_AUDIO_SETTINGS");
return ok;
}
// ----------------------------------------------------------------------------
AudioPolicyService::AudioPolicyService()
: BnAudioPolicyService() , mpPolicyManager(NULL)
{
char value[PROPERTY_VALUE_MAX];
// start tone playback thread
mTonePlaybackThread = new AudioCommandThread(String8(""));
// start audio commands thread
mAudioCommandThread = new AudioCommandThread(String8("ApmCommandThread"));
#if (defined GENERIC_AUDIO) || (defined AUDIO_POLICY_TEST)
mpPolicyManager = new AudioPolicyManagerBase(this);
LOGV("build for GENERIC_AUDIO - using generic audio policy");
#else
// if running in emulation - use the emulator driver
if (property_get("ro.kernel.qemu", value, 0)) {
LOGV("Running in emulation - using generic audio policy");
mpPolicyManager = new AudioPolicyManagerBase(this);
}
else {
LOGV("Using hardware specific audio policy");
mpPolicyManager = createAudioPolicyManager(this);
}
#endif
// load properties
property_get("ro.camera.sound.forced", value, "0");
mpPolicyManager->setSystemProperty("ro.camera.sound.forced", value);
}
AudioPolicyService::~AudioPolicyService()
{
mTonePlaybackThread->exit();
mTonePlaybackThread.clear();
mAudioCommandThread->exit();
mAudioCommandThread.clear();
if (mpPolicyManager) {
delete mpPolicyManager;
}
}
status_t AudioPolicyService::setDeviceConnectionState(AudioSystem::audio_devices device,
AudioSystem::device_connection_state state,
const char *device_address)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (!AudioSystem::isOutputDevice(device) && !AudioSystem::isInputDevice(device)) {
return BAD_VALUE;
}
if (state != AudioSystem::DEVICE_STATE_AVAILABLE && state != AudioSystem::DEVICE_STATE_UNAVAILABLE) {
return BAD_VALUE;
}
LOGV("setDeviceConnectionState() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpPolicyManager->setDeviceConnectionState(device, state, device_address);
}
AudioSystem::device_connection_state AudioPolicyService::getDeviceConnectionState(AudioSystem::audio_devices device,
const char *device_address)
{
if (mpPolicyManager == NULL) {
return AudioSystem::DEVICE_STATE_UNAVAILABLE;
}
if (!checkPermission()) {
return AudioSystem::DEVICE_STATE_UNAVAILABLE;
}
return mpPolicyManager->getDeviceConnectionState(device, device_address);
}
status_t AudioPolicyService::setPhoneState(int state)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (state < 0 || state >= AudioSystem::NUM_MODES) {
return BAD_VALUE;
}
LOGV("setPhoneState() tid %d", gettid());
// TODO: check if it is more appropriate to do it in platform specific policy manager
AudioSystem::setMode(state);
Mutex::Autolock _l(mLock);
mpPolicyManager->setPhoneState(state);
return NO_ERROR;
}
status_t AudioPolicyService::setRingerMode(uint32_t mode, uint32_t mask)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
mpPolicyManager->setRingerMode(mode, mask);
return NO_ERROR;
}
status_t AudioPolicyService::setForceUse(AudioSystem::force_use usage, AudioSystem::forced_config config)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (usage < 0 || usage >= AudioSystem::NUM_FORCE_USE) {
return BAD_VALUE;
}
if (config < 0 || config >= AudioSystem::NUM_FORCE_CONFIG) {
return BAD_VALUE;
}
LOGV("setForceUse() tid %d", gettid());
Mutex::Autolock _l(mLock);
mpPolicyManager->setForceUse(usage, config);
return NO_ERROR;
}
AudioSystem::forced_config AudioPolicyService::getForceUse(AudioSystem::force_use usage)
{
if (mpPolicyManager == NULL) {
return AudioSystem::FORCE_NONE;
}
if (!checkPermission()) {
return AudioSystem::FORCE_NONE;
}
if (usage < 0 || usage >= AudioSystem::NUM_FORCE_USE) {
return AudioSystem::FORCE_NONE;
}
return mpPolicyManager->getForceUse(usage);
}
audio_io_handle_t AudioPolicyService::getOutput(AudioSystem::stream_type stream,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
AudioSystem::output_flags flags)
{
if (mpPolicyManager == NULL) {
return 0;
}
LOGV("getOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpPolicyManager->getOutput(stream, samplingRate, format, channels, flags);
}
status_t AudioPolicyService::startOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
LOGV("startOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpPolicyManager->startOutput(output, stream);
}
status_t AudioPolicyService::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
LOGV("stopOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpPolicyManager->stopOutput(output, stream);
}
void AudioPolicyService::releaseOutput(audio_io_handle_t output)
{
if (mpPolicyManager == NULL) {
return;
}
LOGV("releaseOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
mpPolicyManager->releaseOutput(output);
}
audio_io_handle_t AudioPolicyService::getInput(int inputSource,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
AudioSystem::audio_in_acoustics acoustics)
{
if (mpPolicyManager == NULL) {
return 0;
}
Mutex::Autolock _l(mLock);
return mpPolicyManager->getInput(inputSource, samplingRate, format, channels, acoustics);
}
status_t AudioPolicyService::startInput(audio_io_handle_t input)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
Mutex::Autolock _l(mLock);
return mpPolicyManager->startInput(input);
}
status_t AudioPolicyService::stopInput(audio_io_handle_t input)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
Mutex::Autolock _l(mLock);
return mpPolicyManager->stopInput(input);
}
void AudioPolicyService::releaseInput(audio_io_handle_t input)
{
if (mpPolicyManager == NULL) {
return;
}
Mutex::Autolock _l(mLock);
mpPolicyManager->releaseInput(input);
}
status_t AudioPolicyService::initStreamVolume(AudioSystem::stream_type stream,
int indexMin,
int indexMax)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (stream < 0 || stream >= AudioSystem::NUM_STREAM_TYPES) {
return BAD_VALUE;
}
mpPolicyManager->initStreamVolume(stream, indexMin, indexMax);
return NO_ERROR;
}
status_t AudioPolicyService::setStreamVolumeIndex(AudioSystem::stream_type stream, int index)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (stream < 0 || stream >= AudioSystem::NUM_STREAM_TYPES) {
return BAD_VALUE;
}
return mpPolicyManager->setStreamVolumeIndex(stream, index);
}
status_t AudioPolicyService::getStreamVolumeIndex(AudioSystem::stream_type stream, int *index)
{
if (mpPolicyManager == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (stream < 0 || stream >= AudioSystem::NUM_STREAM_TYPES) {
return BAD_VALUE;
}
return mpPolicyManager->getStreamVolumeIndex(stream, index);
}
void AudioPolicyService::binderDied(const wp<IBinder>& who) {
LOGW("binderDied() %p, tid %d, calling tid %d", who.unsafe_get(), gettid(), IPCThreadState::self()->getCallingPid());
}
static bool tryLock(Mutex& mutex)
{
bool locked = false;
for (int i = 0; i < kDumpLockRetries; ++i) {
if (mutex.tryLock() == NO_ERROR) {
locked = true;
break;
}
usleep(kDumpLockSleep);
}
return locked;
}
status_t AudioPolicyService::dumpInternals(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "PolicyManager Interface: %p\n", mpPolicyManager);
result.append(buffer);
snprintf(buffer, SIZE, "Command Thread: %p\n", mAudioCommandThread.get());
result.append(buffer);
snprintf(buffer, SIZE, "Tones Thread: %p\n", mTonePlaybackThread.get());
result.append(buffer);
write(fd, result.string(), result.size());
return NO_ERROR;
}
status_t AudioPolicyService::dump(int fd, const Vector<String16>& args)
{
if (checkCallingPermission(String16("android.permission.DUMP")) == false) {
dumpPermissionDenial(fd);
} else {
bool locked = tryLock(mLock);
if (!locked) {
String8 result(kDeadlockedString);
write(fd, result.string(), result.size());
}
dumpInternals(fd);
if (mAudioCommandThread != NULL) {
mAudioCommandThread->dump(fd);
}
if (mTonePlaybackThread != NULL) {
mTonePlaybackThread->dump(fd);
}
if (mpPolicyManager) {
mpPolicyManager->dump(fd);
}
if (locked) mLock.unlock();
}
return NO_ERROR;
}
status_t AudioPolicyService::dumpPermissionDenial(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "Permission Denial: "
"can't dump AudioPolicyService from pid=%d, uid=%d\n",
IPCThreadState::self()->getCallingPid(),
IPCThreadState::self()->getCallingUid());
result.append(buffer);
write(fd, result.string(), result.size());
return NO_ERROR;
}
status_t AudioPolicyService::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
return BnAudioPolicyService::onTransact(code, data, reply, flags);
}
// ----------------------------------------------------------------------------
void AudioPolicyService::instantiate() {
defaultServiceManager()->addService(
String16("media.audio_policy"), new AudioPolicyService());
}
// ----------------------------------------------------------------------------
// AudioPolicyClientInterface implementation
// ----------------------------------------------------------------------------
audio_io_handle_t AudioPolicyService::openOutput(uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t *pLatencyMs,
AudioSystem::output_flags flags)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == 0) {
LOGW("openOutput() could not get AudioFlinger");
return 0;
}
return af->openOutput(pDevices, pSamplingRate, (uint32_t *)pFormat, pChannels, pLatencyMs, flags);
}
audio_io_handle_t AudioPolicyService::openDuplicateOutput(audio_io_handle_t output1, audio_io_handle_t output2)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == 0) {
LOGW("openDuplicateOutput() could not get AudioFlinger");
return 0;
}
return af->openDuplicateOutput(output1, output2);
}
status_t AudioPolicyService::closeOutput(audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
return af->closeOutput(output);
}
status_t AudioPolicyService::suspendOutput(audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == 0) {
LOGW("suspendOutput() could not get AudioFlinger");
return PERMISSION_DENIED;
}
return af->suspendOutput(output);
}
status_t AudioPolicyService::restoreOutput(audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == 0) {
LOGW("restoreOutput() could not get AudioFlinger");
return PERMISSION_DENIED;
}
return af->restoreOutput(output);
}
audio_io_handle_t AudioPolicyService::openInput(uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t acoustics)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == 0) {
LOGW("openInput() could not get AudioFlinger");
return 0;
}
return af->openInput(pDevices, pSamplingRate, (uint32_t *)pFormat, pChannels, acoustics);
}
status_t AudioPolicyService::closeInput(audio_io_handle_t input)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
return af->closeInput(input);
}
status_t AudioPolicyService::setStreamVolume(AudioSystem::stream_type stream, float volume, audio_io_handle_t output, int delayMs)
{
return mAudioCommandThread->volumeCommand((int)stream, volume, (int)output, delayMs);
}
status_t AudioPolicyService::setStreamOutput(AudioSystem::stream_type stream, audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
return af->setStreamOutput(stream, output);
}
void AudioPolicyService::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs, int delayMs)
{
mAudioCommandThread->parametersCommand((int)ioHandle, keyValuePairs, delayMs);
}
String8 AudioPolicyService::getParameters(audio_io_handle_t ioHandle, const String8& keys)
{
String8 result = AudioSystem::getParameters(ioHandle, keys);
return result;
}
status_t AudioPolicyService::startTone(ToneGenerator::tone_type tone, AudioSystem::stream_type stream)
{
mTonePlaybackThread->startToneCommand(tone, stream);
return NO_ERROR;
}
status_t AudioPolicyService::stopTone()
{
mTonePlaybackThread->stopToneCommand();
return NO_ERROR;
}
status_t AudioPolicyService::setVoiceVolume(float volume, int delayMs)
{
return mAudioCommandThread->voiceVolumeCommand(volume, delayMs);
}
// ----------- AudioPolicyService::AudioCommandThread implementation ----------
AudioPolicyService::AudioCommandThread::AudioCommandThread(String8 name)
: Thread(false), mName(name)
{
mpToneGenerator = NULL;
}
AudioPolicyService::AudioCommandThread::~AudioCommandThread()
{
if (mName != "" && !mAudioCommands.isEmpty()) {
release_wake_lock(mName.string());
}
mAudioCommands.clear();
if (mpToneGenerator != NULL) delete mpToneGenerator;
}
void AudioPolicyService::AudioCommandThread::onFirstRef()
{
if (mName != "") {
run(mName.string(), ANDROID_PRIORITY_AUDIO);
} else {
run("AudioCommandThread", ANDROID_PRIORITY_AUDIO);
}
}
bool AudioPolicyService::AudioCommandThread::threadLoop()
{
nsecs_t waitTime = INT64_MAX;
mLock.lock();
while (!exitPending())
{
while(!mAudioCommands.isEmpty()) {
nsecs_t curTime = systemTime();
// commands are sorted by increasing time stamp: execute them from index 0 and up
if (mAudioCommands[0]->mTime <= curTime) {
AudioCommand *command = mAudioCommands[0];
mAudioCommands.removeAt(0);
mLastCommand = *command;
switch (command->mCommand) {
case START_TONE: {
mLock.unlock();
ToneData *data = (ToneData *)command->mParam;
LOGV("AudioCommandThread() processing start tone %d on stream %d",
data->mType, data->mStream);
if (mpToneGenerator != NULL)
delete mpToneGenerator;
mpToneGenerator = new ToneGenerator(data->mStream, 1.0);
mpToneGenerator->startTone(data->mType);
delete data;
mLock.lock();
}break;
case STOP_TONE: {
mLock.unlock();
LOGV("AudioCommandThread() processing stop tone");
if (mpToneGenerator != NULL) {
mpToneGenerator->stopTone();
delete mpToneGenerator;
mpToneGenerator = NULL;
}
mLock.lock();
}break;
case SET_VOLUME: {
VolumeData *data = (VolumeData *)command->mParam;
LOGV("AudioCommandThread() processing set volume stream %d, volume %f, output %d", data->mStream, data->mVolume, data->mIO);
command->mStatus = AudioSystem::setStreamVolume(data->mStream, data->mVolume, data->mIO);
if (command->mWaitStatus) {
command->mCond.signal();
mWaitWorkCV.wait(mLock);
}
delete data;
}break;
case SET_PARAMETERS: {
ParametersData *data = (ParametersData *)command->mParam;
LOGV("AudioCommandThread() processing set parameters string %s, io %d", data->mKeyValuePairs.string(), data->mIO);
command->mStatus = AudioSystem::setParameters(data->mIO, data->mKeyValuePairs);
if (command->mWaitStatus) {
command->mCond.signal();
mWaitWorkCV.wait(mLock);
}
delete data;
}break;
case SET_VOICE_VOLUME: {
VoiceVolumeData *data = (VoiceVolumeData *)command->mParam;
LOGV("AudioCommandThread() processing set voice volume volume %f", data->mVolume);
command->mStatus = AudioSystem::setVoiceVolume(data->mVolume);
if (command->mWaitStatus) {
command->mCond.signal();
mWaitWorkCV.wait(mLock);
}
delete data;
}break;
default:
LOGW("AudioCommandThread() unknown command %d", command->mCommand);
}
delete command;
waitTime = INT64_MAX;
} else {
waitTime = mAudioCommands[0]->mTime - curTime;
break;
}
}
// release delayed commands wake lock
if (mName != "" && mAudioCommands.isEmpty()) {
release_wake_lock(mName.string());
}
LOGV("AudioCommandThread() going to sleep");
mWaitWorkCV.waitRelative(mLock, waitTime);
LOGV("AudioCommandThread() waking up");
}
mLock.unlock();
return false;
}
status_t AudioPolicyService::AudioCommandThread::dump(int fd)
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "AudioCommandThread %p Dump\n", this);
result.append(buffer);
write(fd, result.string(), result.size());
bool locked = tryLock(mLock);
if (!locked) {
String8 result2(kCmdDeadlockedString);
write(fd, result2.string(), result2.size());
}
snprintf(buffer, SIZE, "- Commands:\n");
result = String8(buffer);
result.append(" Command Time Wait pParam\n");
for (int i = 0; i < (int)mAudioCommands.size(); i++) {
mAudioCommands[i]->dump(buffer, SIZE);
result.append(buffer);
}
result.append(" Last Command\n");
mLastCommand.dump(buffer, SIZE);
result.append(buffer);
write(fd, result.string(), result.size());
if (locked) mLock.unlock();
return NO_ERROR;
}
void AudioPolicyService::AudioCommandThread::startToneCommand(int type, int stream)
{
AudioCommand *command = new AudioCommand();
command->mCommand = START_TONE;
ToneData *data = new ToneData();
data->mType = type;
data->mStream = stream;
command->mParam = (void *)data;
command->mWaitStatus = false;
Mutex::Autolock _l(mLock);
insertCommand_l(command);
LOGV("AudioCommandThread() adding tone start type %d, stream %d", type, stream);
mWaitWorkCV.signal();
}
void AudioPolicyService::AudioCommandThread::stopToneCommand()
{
AudioCommand *command = new AudioCommand();
command->mCommand = STOP_TONE;
command->mParam = NULL;
command->mWaitStatus = false;
Mutex::Autolock _l(mLock);
insertCommand_l(command);
LOGV("AudioCommandThread() adding tone stop");
mWaitWorkCV.signal();
}
status_t AudioPolicyService::AudioCommandThread::volumeCommand(int stream, float volume, int output, int delayMs)
{
status_t status = NO_ERROR;
AudioCommand *command = new AudioCommand();
command->mCommand = SET_VOLUME;
VolumeData *data = new VolumeData();
data->mStream = stream;
data->mVolume = volume;
data->mIO = output;
command->mParam = data;
if (delayMs == 0) {
command->mWaitStatus = true;
} else {
command->mWaitStatus = false;
}
Mutex::Autolock _l(mLock);
insertCommand_l(command, delayMs);
LOGV("AudioCommandThread() adding set volume stream %d, volume %f, output %d", stream, volume, output);
mWaitWorkCV.signal();
if (command->mWaitStatus) {
command->mCond.wait(mLock);
status = command->mStatus;
mWaitWorkCV.signal();
}
return status;
}
status_t AudioPolicyService::AudioCommandThread::parametersCommand(int ioHandle, const String8& keyValuePairs, int delayMs)
{
status_t status = NO_ERROR;
AudioCommand *command = new AudioCommand();
command->mCommand = SET_PARAMETERS;
ParametersData *data = new ParametersData();
data->mIO = ioHandle;
data->mKeyValuePairs = keyValuePairs;
command->mParam = data;
if (delayMs == 0) {
command->mWaitStatus = true;
} else {
command->mWaitStatus = false;
}
Mutex::Autolock _l(mLock);
insertCommand_l(command, delayMs);
LOGV("AudioCommandThread() adding set parameter string %s, io %d ,delay %d", keyValuePairs.string(), ioHandle, delayMs);
mWaitWorkCV.signal();
if (command->mWaitStatus) {
command->mCond.wait(mLock);
status = command->mStatus;
mWaitWorkCV.signal();
}
return status;
}
status_t AudioPolicyService::AudioCommandThread::voiceVolumeCommand(float volume, int delayMs)
{
status_t status = NO_ERROR;
AudioCommand *command = new AudioCommand();
command->mCommand = SET_VOICE_VOLUME;
VoiceVolumeData *data = new VoiceVolumeData();
data->mVolume = volume;
command->mParam = data;
if (delayMs == 0) {
command->mWaitStatus = true;
} else {
command->mWaitStatus = false;
}
Mutex::Autolock _l(mLock);
insertCommand_l(command, delayMs);
LOGV("AudioCommandThread() adding set voice volume volume %f", volume);
mWaitWorkCV.signal();
if (command->mWaitStatus) {
command->mCond.wait(mLock);
status = command->mStatus;
mWaitWorkCV.signal();
}
return status;
}
// insertCommand_l() must be called with mLock held
void AudioPolicyService::AudioCommandThread::insertCommand_l(AudioCommand *command, int delayMs)
{
ssize_t i;
Vector <AudioCommand *> removedCommands;
command->mTime = systemTime() + milliseconds(delayMs);
// acquire wake lock to make sure delayed commands are processed
if (mName != "" && mAudioCommands.isEmpty()) {
acquire_wake_lock(PARTIAL_WAKE_LOCK, mName.string());
}
// check same pending commands with later time stamps and eliminate them
for (i = mAudioCommands.size()-1; i >= 0; i--) {
AudioCommand *command2 = mAudioCommands[i];
// commands are sorted by increasing time stamp: no need to scan the rest of mAudioCommands
if (command2->mTime <= command->mTime) break;
if (command2->mCommand != command->mCommand) continue;
switch (command->mCommand) {
case SET_PARAMETERS: {
ParametersData *data = (ParametersData *)command->mParam;
ParametersData *data2 = (ParametersData *)command2->mParam;
if (data->mIO != data2->mIO) break;
LOGV("Comparing parameter command %s to new command %s", data2->mKeyValuePairs.string(), data->mKeyValuePairs.string());
AudioParameter param = AudioParameter(data->mKeyValuePairs);
AudioParameter param2 = AudioParameter(data2->mKeyValuePairs);
for (size_t j = 0; j < param.size(); j++) {
String8 key;
String8 value;
param.getAt(j, key, value);
for (size_t k = 0; k < param2.size(); k++) {
String8 key2;
String8 value2;
param2.getAt(k, key2, value2);
if (key2 == key) {
param2.remove(key2);
LOGV("Filtering out parameter %s", key2.string());
break;
}
}
}
// if all keys have been filtered out, remove the command.
// otherwise, update the key value pairs
if (param2.size() == 0) {
removedCommands.add(command2);
} else {
data2->mKeyValuePairs = param2.toString();
}
} break;
case SET_VOLUME: {
VolumeData *data = (VolumeData *)command->mParam;
VolumeData *data2 = (VolumeData *)command2->mParam;
if (data->mIO != data2->mIO) break;
if (data->mStream != data2->mStream) break;
LOGV("Filtering out volume command on output %d for stream %d", data->mIO, data->mStream);
removedCommands.add(command2);
} break;
case START_TONE:
case STOP_TONE:
default:
break;
}
}
// remove filtered commands
for (size_t j = 0; j < removedCommands.size(); j++) {
// removed commands always have time stamps greater than current command
for (size_t k = i + 1; k < mAudioCommands.size(); k++) {
if (mAudioCommands[k] == removedCommands[j]) {
LOGV("suppressing command: %d", mAudioCommands[k]->mCommand);
mAudioCommands.removeAt(k);
break;
}
}
}
removedCommands.clear();
// insert command at the right place according to its time stamp
LOGV("inserting command: %d at index %d, num commands %d", command->mCommand, (int)i+1, mAudioCommands.size());
mAudioCommands.insertAt(command, i + 1);
}
void AudioPolicyService::AudioCommandThread::exit()
{
LOGV("AudioCommandThread::exit");
{
AutoMutex _l(mLock);
requestExit();
mWaitWorkCV.signal();
}
requestExitAndWait();
}
void AudioPolicyService::AudioCommandThread::AudioCommand::dump(char* buffer, size_t size)
{
snprintf(buffer, size, " %02d %06d.%03d %01u %p\n",
mCommand,
(int)ns2s(mTime),
(int)ns2ms(mTime)%1000,
mWaitStatus,
mParam);
}
}; // namespace android