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android_frameworks_base/services/audioflinger/AudioPolicyService.cpp
Eric Laurent 497b3fe725 Issue 5081351: isWiredHeadsetOn() permission. 
AudioManager.isWiredHeadsetOn() should not require permission MODIFY_AUDIO_SETTINGS.
Remove permission checks on all getters in audio policy manager as permission enforcement
is really usefull for setters.
Also deprecate AudioManager.isWiredHeadsetOn() which name and implementation are deceptive.

Change-Id: I38f8df7c26c0d417bf0e2b74e4c11c2d143f2ecd
2011-08-12 17:43:35 -07:00

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/*
* 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 <cutils/properties.h>
#include <dlfcn.h>
#include <hardware_legacy/power.h>
#include <media/AudioEffect.h>
#include <media/EffectsFactoryApi.h>
#include <hardware/hardware.h>
#include <system/audio.h>
#include <system/audio_policy.h>
#include <hardware/audio_policy.h>
#include <audio_effects/audio_effects_conf.h>
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() {
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;
}
namespace {
extern struct audio_policy_service_ops aps_ops;
};
// ----------------------------------------------------------------------------
AudioPolicyService::AudioPolicyService()
: BnAudioPolicyService() , mpAudioPolicyDev(NULL) , mpAudioPolicy(NULL)
{
char value[PROPERTY_VALUE_MAX];
const struct hw_module_t *module;
int forced_val;
int rc;
Mutex::Autolock _l(mLock);
// start tone playback thread
mTonePlaybackThread = new AudioCommandThread(String8(""));
// start audio commands thread
mAudioCommandThread = new AudioCommandThread(String8("ApmCommandThread"));
/* instantiate the audio policy manager */
rc = hw_get_module(AUDIO_POLICY_HARDWARE_MODULE_ID, &module);
if (rc)
return;
rc = audio_policy_dev_open(module, &mpAudioPolicyDev);
LOGE_IF(rc, "couldn't open audio policy device (%s)", strerror(-rc));
if (rc)
return;
rc = mpAudioPolicyDev->create_audio_policy(mpAudioPolicyDev, &aps_ops, this,
&mpAudioPolicy);
LOGE_IF(rc, "couldn't create audio policy (%s)", strerror(-rc));
if (rc)
return;
rc = mpAudioPolicy->init_check(mpAudioPolicy);
LOGE_IF(rc, "couldn't init_check the audio policy (%s)", strerror(-rc));
if (rc)
return;
property_get("ro.camera.sound.forced", value, "0");
forced_val = strtol(value, NULL, 0);
mpAudioPolicy->set_can_mute_enforced_audible(mpAudioPolicy, !forced_val);
LOGI("Loaded audio policy from %s (%s)", module->name, module->id);
// load audio pre processing modules
if (access(AUDIO_EFFECT_VENDOR_CONFIG_FILE, R_OK) == 0) {
loadPreProcessorConfig(AUDIO_EFFECT_VENDOR_CONFIG_FILE);
} else if (access(AUDIO_EFFECT_DEFAULT_CONFIG_FILE, R_OK) == 0) {
loadPreProcessorConfig(AUDIO_EFFECT_DEFAULT_CONFIG_FILE);
}
}
AudioPolicyService::~AudioPolicyService()
{
mTonePlaybackThread->exit();
mTonePlaybackThread.clear();
mAudioCommandThread->exit();
mAudioCommandThread.clear();
// release audio pre processing resources
for (size_t i = 0; i < mInputSources.size(); i++) {
InputSourceDesc *source = mInputSources.valueAt(i);
Vector <EffectDesc *> effects = source->mEffects;
for (size_t j = 0; j < effects.size(); j++) {
delete effects[j]->mName;
Vector <effect_param_t *> params = effects[j]->mParams;
for (size_t k = 0; k < params.size(); k++) {
delete params[k];
}
params.clear();
delete effects[j];
}
effects.clear();
delete source;
}
mInputSources.clear();
for (size_t i = 0; i < mInputs.size(); i++) {
mInputs.valueAt(i)->mEffects.clear();
delete mInputs.valueAt(i);
}
mInputs.clear();
if (mpAudioPolicy && mpAudioPolicyDev)
mpAudioPolicyDev->destroy_audio_policy(mpAudioPolicyDev, mpAudioPolicy);
if (mpAudioPolicyDev)
audio_policy_dev_close(mpAudioPolicyDev);
}
status_t AudioPolicyService::setDeviceConnectionState(audio_devices_t device,
audio_policy_dev_state_t state,
const char *device_address)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (!audio_is_output_device(device) && !audio_is_input_device(device)) {
return BAD_VALUE;
}
if (state != AUDIO_POLICY_DEVICE_STATE_AVAILABLE &&
state != AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE) {
return BAD_VALUE;
}
LOGV("setDeviceConnectionState() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpAudioPolicy->set_device_connection_state(mpAudioPolicy, device,
state, device_address);
}
audio_policy_dev_state_t AudioPolicyService::getDeviceConnectionState(
audio_devices_t device,
const char *device_address)
{
if (mpAudioPolicy == NULL) {
return AUDIO_POLICY_DEVICE_STATE_UNAVAILABLE;
}
return mpAudioPolicy->get_device_connection_state(mpAudioPolicy, device,
device_address);
}
status_t AudioPolicyService::setPhoneState(int state)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (state < 0 || state >= AUDIO_MODE_CNT) {
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);
mpAudioPolicy->set_phone_state(mpAudioPolicy, state);
return NO_ERROR;
}
status_t AudioPolicyService::setRingerMode(uint32_t mode, uint32_t mask)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
mpAudioPolicy->set_ringer_mode(mpAudioPolicy, mode, mask);
return NO_ERROR;
}
status_t AudioPolicyService::setForceUse(audio_policy_force_use_t usage,
audio_policy_forced_cfg_t config)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) {
return BAD_VALUE;
}
if (config < 0 || config >= AUDIO_POLICY_FORCE_CFG_CNT) {
return BAD_VALUE;
}
LOGV("setForceUse() tid %d", gettid());
Mutex::Autolock _l(mLock);
mpAudioPolicy->set_force_use(mpAudioPolicy, usage, config);
return NO_ERROR;
}
audio_policy_forced_cfg_t AudioPolicyService::getForceUse(audio_policy_force_use_t usage)
{
if (mpAudioPolicy == NULL) {
return AUDIO_POLICY_FORCE_NONE;
}
if (usage < 0 || usage >= AUDIO_POLICY_FORCE_USE_CNT) {
return AUDIO_POLICY_FORCE_NONE;
}
return mpAudioPolicy->get_force_use(mpAudioPolicy, usage);
}
audio_io_handle_t AudioPolicyService::getOutput(audio_stream_type_t stream,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
audio_policy_output_flags_t flags)
{
if (mpAudioPolicy == NULL) {
return 0;
}
LOGV("getOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpAudioPolicy->get_output(mpAudioPolicy, stream, samplingRate, format, channels, flags);
}
status_t AudioPolicyService::startOutput(audio_io_handle_t output,
audio_stream_type_t stream,
int session)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
LOGV("startOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpAudioPolicy->start_output(mpAudioPolicy, output, stream, session);
}
status_t AudioPolicyService::stopOutput(audio_io_handle_t output,
audio_stream_type_t stream,
int session)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
LOGV("stopOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
return mpAudioPolicy->stop_output(mpAudioPolicy, output, stream, session);
}
void AudioPolicyService::releaseOutput(audio_io_handle_t output)
{
if (mpAudioPolicy == NULL) {
return;
}
LOGV("releaseOutput() tid %d", gettid());
Mutex::Autolock _l(mLock);
mpAudioPolicy->release_output(mpAudioPolicy, output);
}
audio_io_handle_t AudioPolicyService::getInput(int inputSource,
uint32_t samplingRate,
uint32_t format,
uint32_t channels,
audio_in_acoustics_t acoustics,
int audioSession)
{
if (mpAudioPolicy == NULL) {
return 0;
}
Mutex::Autolock _l(mLock);
audio_io_handle_t input = mpAudioPolicy->get_input(mpAudioPolicy, inputSource, samplingRate,
format, channels, acoustics);
if (input == 0) {
return input;
}
// create audio pre processors according to input source
ssize_t index = mInputSources.indexOfKey((audio_source_t)inputSource);
if (index < 0) {
return input;
}
ssize_t idx = mInputs.indexOfKey(input);
InputDesc *inputDesc;
if (idx < 0) {
inputDesc = new InputDesc();
inputDesc->mSessionId = audioSession;
mInputs.add(input, inputDesc);
} else {
inputDesc = mInputs.valueAt(idx);
}
Vector <EffectDesc *> effects = mInputSources.valueAt(index)->mEffects;
for (size_t i = 0; i < effects.size(); i++) {
EffectDesc *effect = effects[i];
sp<AudioEffect> fx = new AudioEffect(NULL, &effect->mUuid, -1, 0, 0, audioSession, input);
status_t status = fx->initCheck();
if (status != NO_ERROR && status != ALREADY_EXISTS) {
LOGW("Failed to create Fx %s on input %d", effect->mName, input);
// fx goes out of scope and strong ref on AudioEffect is released
continue;
}
for (size_t j = 0; j < effect->mParams.size(); j++) {
fx->setParameter(effect->mParams[j]);
}
inputDesc->mEffects.add(fx);
}
setPreProcessorEnabled(inputDesc, true);
return input;
}
status_t AudioPolicyService::startInput(audio_io_handle_t input)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
Mutex::Autolock _l(mLock);
return mpAudioPolicy->start_input(mpAudioPolicy, input);
}
status_t AudioPolicyService::stopInput(audio_io_handle_t input)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
Mutex::Autolock _l(mLock);
return mpAudioPolicy->stop_input(mpAudioPolicy, input);
}
void AudioPolicyService::releaseInput(audio_io_handle_t input)
{
if (mpAudioPolicy == NULL) {
return;
}
Mutex::Autolock _l(mLock);
mpAudioPolicy->release_input(mpAudioPolicy, input);
ssize_t index = mInputs.indexOfKey(input);
if (index < 0) {
return;
}
InputDesc *inputDesc = mInputs.valueAt(index);
setPreProcessorEnabled(inputDesc, false);
inputDesc->mEffects.clear();
delete inputDesc;
mInputs.removeItemsAt(index);
}
status_t AudioPolicyService::initStreamVolume(audio_stream_type_t stream,
int indexMin,
int indexMax)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (stream < 0 || stream >= AUDIO_STREAM_CNT) {
return BAD_VALUE;
}
mpAudioPolicy->init_stream_volume(mpAudioPolicy, stream, indexMin, indexMax);
return NO_ERROR;
}
status_t AudioPolicyService::setStreamVolumeIndex(audio_stream_type_t stream, int index)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (!checkPermission()) {
return PERMISSION_DENIED;
}
if (stream < 0 || stream >= AUDIO_STREAM_CNT) {
return BAD_VALUE;
}
return mpAudioPolicy->set_stream_volume_index(mpAudioPolicy, stream, index);
}
status_t AudioPolicyService::getStreamVolumeIndex(audio_stream_type_t stream, int *index)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
if (stream < 0 || stream >= AUDIO_STREAM_CNT) {
return BAD_VALUE;
}
return mpAudioPolicy->get_stream_volume_index(mpAudioPolicy, stream, index);
}
uint32_t AudioPolicyService::getStrategyForStream(audio_stream_type_t stream)
{
if (mpAudioPolicy == NULL) {
return 0;
}
return mpAudioPolicy->get_strategy_for_stream(mpAudioPolicy, stream);
}
uint32_t AudioPolicyService::getDevicesForStream(audio_stream_type_t stream)
{
if (mpAudioPolicy == NULL) {
return 0;
}
return mpAudioPolicy->get_devices_for_stream(mpAudioPolicy, stream);
}
audio_io_handle_t AudioPolicyService::getOutputForEffect(effect_descriptor_t *desc)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
Mutex::Autolock _l(mLock);
return mpAudioPolicy->get_output_for_effect(mpAudioPolicy, desc);
}
status_t AudioPolicyService::registerEffect(effect_descriptor_t *desc,
audio_io_handle_t io,
uint32_t strategy,
int session,
int id)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
return mpAudioPolicy->register_effect(mpAudioPolicy, desc, io, strategy, session, id);
}
status_t AudioPolicyService::unregisterEffect(int id)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
return mpAudioPolicy->unregister_effect(mpAudioPolicy, id);
}
status_t AudioPolicyService::setEffectEnabled(int id, bool enabled)
{
if (mpAudioPolicy == NULL) {
return NO_INIT;
}
return mpAudioPolicy->set_effect_enabled(mpAudioPolicy, id, enabled);
}
bool AudioPolicyService::isStreamActive(int stream, uint32_t inPastMs) const
{
if (mpAudioPolicy == NULL) {
return 0;
}
Mutex::Autolock _l(mLock);
return mpAudioPolicy->is_stream_active(mpAudioPolicy, stream, inPastMs);
}
status_t AudioPolicyService::queryDefaultPreProcessing(int audioSession,
effect_descriptor_t *descriptors,
uint32_t *count)
{
if (mpAudioPolicy == NULL) {
*count = 0;
return NO_INIT;
}
Mutex::Autolock _l(mLock);
status_t status = NO_ERROR;
size_t index;
for (index = 0; index < mInputs.size(); index++) {
if (mInputs.valueAt(index)->mSessionId == audioSession) {
break;
}
}
if (index == mInputs.size()) {
*count = 0;
return BAD_VALUE;
}
Vector< sp<AudioEffect> > effects = mInputs.valueAt(index)->mEffects;
for (size_t i = 0; i < effects.size(); i++) {
effect_descriptor_t desc = effects[i]->descriptor();
if (i < *count) {
memcpy(descriptors + i, &desc, sizeof(effect_descriptor_t));
}
}
if (effects.size() > *count) {
status = NO_MEMORY;
}
*count = effects.size();
return status;
}
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", mpAudioPolicy);
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 (mpAudioPolicy) {
mpAudioPolicy->dump(mpAudioPolicy, 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;
}
void AudioPolicyService::setPreProcessorEnabled(InputDesc *inputDesc, bool enabled)
{
Vector<sp<AudioEffect> > fxVector = inputDesc->mEffects;
for (size_t i = 0; i < fxVector.size(); i++) {
sp<AudioEffect> fx = fxVector.itemAt(i);
fx->setEnabled(enabled);
}
}
status_t AudioPolicyService::onTransact(
uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
{
return BnAudioPolicyService::onTransact(code, data, reply, flags);
}
// ----------- 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 char *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 = String8(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, 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);
}
/******* helpers for the service_ops callbacks defined below *********/
void AudioPolicyService::setParameters(audio_io_handle_t ioHandle,
const char *keyValuePairs,
int delayMs)
{
mAudioCommandThread->parametersCommand((int)ioHandle, keyValuePairs,
delayMs);
}
int AudioPolicyService::setStreamVolume(audio_stream_type_t stream,
float volume,
audio_io_handle_t output,
int delayMs)
{
return (int)mAudioCommandThread->volumeCommand((int)stream, volume,
(int)output, delayMs);
}
int AudioPolicyService::startTone(audio_policy_tone_t tone,
audio_stream_type_t stream)
{
if (tone != AUDIO_POLICY_TONE_IN_CALL_NOTIFICATION)
LOGE("startTone: illegal tone requested (%d)", tone);
if (stream != AUDIO_STREAM_VOICE_CALL)
LOGE("startTone: illegal stream (%d) requested for tone %d", stream,
tone);
mTonePlaybackThread->startToneCommand(ToneGenerator::TONE_SUP_CALL_WAITING,
AUDIO_STREAM_VOICE_CALL);
return 0;
}
int AudioPolicyService::stopTone()
{
mTonePlaybackThread->stopToneCommand();
return 0;
}
int AudioPolicyService::setVoiceVolume(float volume, int delayMs)
{
return (int)mAudioCommandThread->voiceVolumeCommand(volume, delayMs);
}
// ----------------------------------------------------------------------------
// Audio pre-processing configuration
// ----------------------------------------------------------------------------
const char *AudioPolicyService::kInputSourceNames[AUDIO_SOURCE_CNT -1] = {
MIC_SRC_TAG,
VOICE_UL_SRC_TAG,
VOICE_DL_SRC_TAG,
VOICE_CALL_SRC_TAG,
CAMCORDER_SRC_TAG,
VOICE_REC_SRC_TAG,
VOICE_COMM_SRC_TAG
};
// returns the audio_source_t enum corresponding to the input source name or
// AUDIO_SOURCE_CNT is no match found
audio_source_t AudioPolicyService::inputSourceNameToEnum(const char *name)
{
int i;
for (i = AUDIO_SOURCE_MIC; i < AUDIO_SOURCE_CNT; i++) {
if (strcmp(name, kInputSourceNames[i - AUDIO_SOURCE_MIC]) == 0) {
LOGV("inputSourceNameToEnum found source %s %d", name, i);
break;
}
}
return (audio_source_t)i;
}
size_t AudioPolicyService::growParamSize(char *param,
size_t size,
size_t *curSize,
size_t *totSize)
{
// *curSize is at least sizeof(effect_param_t) + 2 * sizeof(int)
size_t pos = ((*curSize - 1 ) / size + 1) * size;
if (pos + size > *totSize) {
while (pos + size > *totSize) {
*totSize += ((*totSize + 7) / 8) * 4;
}
param = (char *)realloc(param, *totSize);
}
*curSize = pos + size;
return pos;
}
size_t AudioPolicyService::readParamValue(cnode *node,
char *param,
size_t *curSize,
size_t *totSize)
{
if (strncmp(node->name, SHORT_TAG, sizeof(SHORT_TAG) + 1) == 0) {
size_t pos = growParamSize(param, sizeof(short), curSize, totSize);
*(short *)((char *)param + pos) = (short)atoi(node->value);
LOGV("readParamValue() reading short %d", *(short *)((char *)param + pos));
return sizeof(short);
} else if (strncmp(node->name, INT_TAG, sizeof(INT_TAG) + 1) == 0) {
size_t pos = growParamSize(param, sizeof(int), curSize, totSize);
*(int *)((char *)param + pos) = atoi(node->value);
LOGV("readParamValue() reading int %d", *(int *)((char *)param + pos));
return sizeof(int);
} else if (strncmp(node->name, FLOAT_TAG, sizeof(FLOAT_TAG) + 1) == 0) {
size_t pos = growParamSize(param, sizeof(float), curSize, totSize);
*(float *)((char *)param + pos) = (float)atof(node->value);
LOGV("readParamValue() reading float %f",*(float *)((char *)param + pos));
return sizeof(float);
} else if (strncmp(node->name, BOOL_TAG, sizeof(BOOL_TAG) + 1) == 0) {
size_t pos = growParamSize(param, sizeof(bool), curSize, totSize);
if (strncmp(node->value, "false", strlen("false") + 1) == 0) {
*(bool *)((char *)param + pos) = false;
} else {
*(bool *)((char *)param + pos) = true;
}
LOGV("readParamValue() reading bool %s",*(bool *)((char *)param + pos) ? "true" : "false");
return sizeof(bool);
} else if (strncmp(node->name, STRING_TAG, sizeof(STRING_TAG) + 1) == 0) {
size_t len = strnlen(node->value, EFFECT_STRING_LEN_MAX);
if (*curSize + len + 1 > *totSize) {
*totSize = *curSize + len + 1;
param = (char *)realloc(param, *totSize);
}
strncpy(param + *curSize, node->value, len);
*curSize += len;
param[*curSize] = '\0';
LOGV("readParamValue() reading string %s", param + *curSize - len);
return len;
}
LOGW("readParamValue() unknown param type %s", node->name);
return 0;
}
effect_param_t *AudioPolicyService::loadEffectParameter(cnode *root)
{
cnode *param;
cnode *value;
size_t curSize = sizeof(effect_param_t);
size_t totSize = sizeof(effect_param_t) + 2 * sizeof(int);
effect_param_t *fx_param = (effect_param_t *)malloc(totSize);
param = config_find(root, PARAM_TAG);
value = config_find(root, VALUE_TAG);
if (param == NULL && value == NULL) {
// try to parse simple parameter form {int int}
param = root->first_child;
if (param) {
// Note: that a pair of random strings is read as 0 0
int *ptr = (int *)fx_param->data;
int *ptr2 = (int *)((char *)param + sizeof(effect_param_t));
LOGW("loadEffectParameter() ptr %p ptr2 %p", ptr, ptr2);
*ptr++ = atoi(param->name);
*ptr = atoi(param->value);
fx_param->psize = sizeof(int);
fx_param->vsize = sizeof(int);
return fx_param;
}
}
if (param == NULL || value == NULL) {
LOGW("loadEffectParameter() invalid parameter description %s", root->name);
goto error;
}
fx_param->psize = 0;
param = param->first_child;
while (param) {
LOGV("loadEffectParameter() reading param of type %s", param->name);
size_t size = readParamValue(param, (char *)fx_param, &curSize, &totSize);
if (size == 0) {
goto error;
}
fx_param->psize += size;
param = param->next;
}
// align start of value field on 32 bit boundary
curSize = ((curSize - 1 ) / sizeof(int) + 1) * sizeof(int);
fx_param->vsize = 0;
value = value->first_child;
while (value) {
LOGV("loadEffectParameter() reading value of type %s", value->name);
size_t size = readParamValue(value, (char *)fx_param, &curSize, &totSize);
if (size == 0) {
goto error;
}
fx_param->vsize += size;
value = value->next;
}
return fx_param;
error:
delete fx_param;
return NULL;
}
void AudioPolicyService::loadEffectParameters(cnode *root, Vector <effect_param_t *>& params)
{
cnode *node = root->first_child;
while (node) {
LOGV("loadEffectParameters() loading param %s", node->name);
effect_param_t *param = loadEffectParameter(node);
if (param == NULL) {
node = node->next;
continue;
}
params.add(param);
node = node->next;
}
}
AudioPolicyService::InputSourceDesc *AudioPolicyService::loadInputSource(
cnode *root,
const Vector <EffectDesc *>& effects)
{
cnode *node = root->first_child;
if (node == NULL) {
LOGW("loadInputSource() empty element %s", root->name);
return NULL;
}
InputSourceDesc *source = new InputSourceDesc();
while (node) {
size_t i;
for (i = 0; i < effects.size(); i++) {
if (strncmp(effects[i]->mName, node->name, EFFECT_STRING_LEN_MAX) == 0) {
LOGV("loadInputSource() found effect %s in list", node->name);
break;
}
}
if (i == effects.size()) {
LOGV("loadInputSource() effect %s not in list", node->name);
node = node->next;
continue;
}
EffectDesc *effect = new EffectDesc(*effects[i]);
loadEffectParameters(node, effect->mParams);
LOGV("loadInputSource() adding effect %s uuid %08x", effect->mName, effect->mUuid.timeLow);
source->mEffects.add(effect);
node = node->next;
}
if (source->mEffects.size() == 0) {
LOGW("loadInputSource() no valid effects found in source %s", root->name);
delete source;
return NULL;
}
return source;
}
status_t AudioPolicyService::loadInputSources(cnode *root, const Vector <EffectDesc *>& effects)
{
cnode *node = config_find(root, PREPROCESSING_TAG);
if (node == NULL) {
return -ENOENT;
}
node = node->first_child;
while (node) {
audio_source_t source = inputSourceNameToEnum(node->name);
if (source == AUDIO_SOURCE_CNT) {
LOGW("loadInputSources() invalid input source %s", node->name);
node = node->next;
continue;
}
LOGV("loadInputSources() loading input source %s", node->name);
InputSourceDesc *desc = loadInputSource(node, effects);
if (desc == NULL) {
node = node->next;
continue;
}
mInputSources.add(source, desc);
node = node->next;
}
return NO_ERROR;
}
AudioPolicyService::EffectDesc *AudioPolicyService::loadEffect(cnode *root)
{
cnode *node = config_find(root, UUID_TAG);
if (node == NULL) {
return NULL;
}
effect_uuid_t uuid;
if (AudioEffect::stringToGuid(node->value, &uuid) != NO_ERROR) {
LOGW("loadEffect() invalid uuid %s", node->value);
return NULL;
}
EffectDesc *effect = new EffectDesc();
effect->mName = strdup(root->name);
memcpy(&effect->mUuid, &uuid, sizeof(effect_uuid_t));
return effect;
}
status_t AudioPolicyService::loadEffects(cnode *root, Vector <EffectDesc *>& effects)
{
cnode *node = config_find(root, EFFECTS_TAG);
if (node == NULL) {
return -ENOENT;
}
node = node->first_child;
while (node) {
LOGV("loadEffects() loading effect %s", node->name);
EffectDesc *effect = loadEffect(node);
if (effect == NULL) {
node = node->next;
continue;
}
effects.add(effect);
node = node->next;
}
return NO_ERROR;
}
status_t AudioPolicyService::loadPreProcessorConfig(const char *path)
{
cnode *root;
char *data;
data = (char *)load_file(path, NULL);
if (data == NULL) {
return -ENODEV;
}
root = config_node("", "");
config_load(root, data);
Vector <EffectDesc *> effects;
loadEffects(root, effects);
loadInputSources(root, effects);
config_free(root);
free(root);
free(data);
return NO_ERROR;
}
/* implementation of the interface to the policy manager */
extern "C" {
static audio_io_handle_t aps_open_output(void *service,
uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t *pLatencyMs,
audio_policy_output_flags_t flags)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
LOGW("%s: could not get AudioFlinger", __func__);
return 0;
}
return af->openOutput(pDevices, pSamplingRate, pFormat, pChannels,
pLatencyMs, flags);
}
static audio_io_handle_t aps_open_dup_output(void *service,
audio_io_handle_t output1,
audio_io_handle_t output2)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
LOGW("%s: could not get AudioFlinger", __func__);
return 0;
}
return af->openDuplicateOutput(output1, output2);
}
static int aps_close_output(void *service, audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL)
return PERMISSION_DENIED;
return af->closeOutput(output);
}
static int aps_suspend_output(void *service, audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
LOGW("%s: could not get AudioFlinger", __func__);
return PERMISSION_DENIED;
}
return af->suspendOutput(output);
}
static int aps_restore_output(void *service, audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
LOGW("%s: could not get AudioFlinger", __func__);
return PERMISSION_DENIED;
}
return af->restoreOutput(output);
}
static audio_io_handle_t aps_open_input(void *service,
uint32_t *pDevices,
uint32_t *pSamplingRate,
uint32_t *pFormat,
uint32_t *pChannels,
uint32_t acoustics)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL) {
LOGW("%s: could not get AudioFlinger", __func__);
return 0;
}
return af->openInput(pDevices, pSamplingRate, pFormat, pChannels,
acoustics);
}
static int aps_close_input(void *service, audio_io_handle_t input)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL)
return PERMISSION_DENIED;
return af->closeInput(input);
}
static int aps_set_stream_output(void *service, audio_stream_type_t stream,
audio_io_handle_t output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL)
return PERMISSION_DENIED;
return af->setStreamOutput(stream, output);
}
static int aps_move_effects(void *service, int session,
audio_io_handle_t src_output,
audio_io_handle_t dst_output)
{
sp<IAudioFlinger> af = AudioSystem::get_audio_flinger();
if (af == NULL)
return PERMISSION_DENIED;
return af->moveEffects(session, (int)src_output, (int)dst_output);
}
static char * aps_get_parameters(void *service, audio_io_handle_t io_handle,
const char *keys)
{
String8 result = AudioSystem::getParameters(io_handle, String8(keys));
return strdup(result.string());
}
static void aps_set_parameters(void *service, audio_io_handle_t io_handle,
const char *kv_pairs, int delay_ms)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
audioPolicyService->setParameters(io_handle, kv_pairs, delay_ms);
}
static int aps_set_stream_volume(void *service, audio_stream_type_t stream,
float volume, audio_io_handle_t output,
int delay_ms)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
return audioPolicyService->setStreamVolume(stream, volume, output,
delay_ms);
}
static int aps_start_tone(void *service, audio_policy_tone_t tone,
audio_stream_type_t stream)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
return audioPolicyService->startTone(tone, stream);
}
static int aps_stop_tone(void *service)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
return audioPolicyService->stopTone();
}
static int aps_set_voice_volume(void *service, float volume, int delay_ms)
{
AudioPolicyService *audioPolicyService = (AudioPolicyService *)service;
return audioPolicyService->setVoiceVolume(volume, delay_ms);
}
}; // extern "C"
namespace {
struct audio_policy_service_ops aps_ops = {
open_output : aps_open_output,
open_duplicate_output : aps_open_dup_output,
close_output : aps_close_output,
suspend_output : aps_suspend_output,
restore_output : aps_restore_output,
open_input : aps_open_input,
close_input : aps_close_input,
set_stream_volume : aps_set_stream_volume,
set_stream_output : aps_set_stream_output,
set_parameters : aps_set_parameters,
get_parameters : aps_get_parameters,
start_tone : aps_start_tone,
stop_tone : aps_stop_tone,
set_voice_volume : aps_set_voice_volume,
move_effects : aps_move_effects,
};
}; // namespace <unnamed>
}; // namespace android
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