Fix issue 1795088 Improve audio routing code
Initial commit for review.
Integrated comments after patch set 1 review.
Fixed lockup in AudioFlinger::ThreadBase::exit()
Fixed lockup when playing tone with AudioPlocyService startTone()
diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp
index 86d0542..1fc1024 100644
--- a/media/libmedia/AudioSystem.cpp
+++ b/media/libmedia/AudioSystem.cpp
@@ -20,8 +20,18 @@
#include <utils/Log.h>
#include <binder/IServiceManager.h>
#include <media/AudioSystem.h>
+#include <media/IAudioPolicyService.h>
#include <math.h>
+// ----------------------------------------------------------------------------
+// the sim build doesn't have gettid
+
+#ifndef HAVE_GETTID
+# define gettid getpid
+#endif
+
+// ----------------------------------------------------------------------------
+
namespace android {
// client singleton for AudioFlinger binder interface
@@ -30,10 +40,9 @@
sp<AudioSystem::AudioFlingerClient> AudioSystem::gAudioFlingerClient;
audio_error_callback AudioSystem::gAudioErrorCallback = NULL;
// Cached values
-int AudioSystem::gOutSamplingRate[NUM_AUDIO_OUTPUT_TYPES];
-int AudioSystem::gOutFrameCount[NUM_AUDIO_OUTPUT_TYPES];
-uint32_t AudioSystem::gOutLatency[NUM_AUDIO_OUTPUT_TYPES];
-bool AudioSystem::gA2dpEnabled;
+DefaultKeyedVector<int, audio_io_handle_t> AudioSystem::gStreamOutputMap(0);
+DefaultKeyedVector<audio_io_handle_t, AudioSystem::OutputDescriptor *> AudioSystem::gOutputs(0);
+
// Cached values for recording queries
uint32_t AudioSystem::gPrevInSamplingRate = 16000;
int AudioSystem::gPrevInFormat = AudioSystem::PCM_16_BIT;
@@ -65,44 +74,12 @@
binder->linkToDeath(gAudioFlingerClient);
gAudioFlinger = interface_cast<IAudioFlinger>(binder);
gAudioFlinger->registerClient(gAudioFlingerClient);
- // Cache frequently accessed parameters
- for (int output = 0; output < NUM_AUDIO_OUTPUT_TYPES; output++) {
- gOutFrameCount[output] = (int)gAudioFlinger->frameCount(output);
- gOutSamplingRate[output] = (int)gAudioFlinger->sampleRate(output);
- gOutLatency[output] = gAudioFlinger->latency(output);
- }
- gA2dpEnabled = gAudioFlinger->isA2dpEnabled();
}
LOGE_IF(gAudioFlinger==0, "no AudioFlinger!?");
+
return gAudioFlinger;
}
-// routing helper functions
-status_t AudioSystem::speakerphone(bool state) {
- uint32_t routes = state ? ROUTE_SPEAKER : ROUTE_EARPIECE;
- return setRouting(MODE_IN_CALL, routes, ROUTE_ALL);
-}
-
-status_t AudioSystem::isSpeakerphoneOn(bool* state) {
- uint32_t routes = 0;
- status_t s = getRouting(MODE_IN_CALL, &routes);
- *state = !!(routes & ROUTE_SPEAKER);
- return s;
-}
-
-status_t AudioSystem::bluetoothSco(bool state) {
- uint32_t mask = ROUTE_BLUETOOTH_SCO;
- uint32_t routes = state ? mask : ROUTE_EARPIECE;
- return setRouting(MODE_IN_CALL, routes, ROUTE_ALL);
-}
-
-status_t AudioSystem::isBluetoothScoOn(bool* state) {
- uint32_t routes = 0;
- status_t s = getRouting(MODE_IN_CALL, &routes);
- *state = !!(routes & ROUTE_BLUETOOTH_SCO);
- return s;
-}
-
status_t AudioSystem::muteMicrophone(bool state) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
@@ -148,12 +125,12 @@
return NO_ERROR;
}
-status_t AudioSystem::setStreamVolume(int stream, float value)
+status_t AudioSystem::setStreamVolume(int stream, float value, void *output)
{
if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE;
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
- af->setStreamVolume(stream, value);
+ af->setStreamVolume(stream, value, output);
return NO_ERROR;
}
@@ -166,12 +143,12 @@
return NO_ERROR;
}
-status_t AudioSystem::getStreamVolume(int stream, float* volume)
+status_t AudioSystem::getStreamVolume(int stream, float* volume, void *output)
{
if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE;
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
- *volume = af->streamVolume(stream);
+ *volume = af->streamVolume(stream, output);
return NO_ERROR;
}
@@ -192,29 +169,6 @@
return af->setMode(mode);
}
-status_t AudioSystem::getMode(int* mode)
-{
- const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
- if (af == 0) return PERMISSION_DENIED;
- *mode = af->getMode();
- return NO_ERROR;
-}
-
-status_t AudioSystem::setRouting(int mode, uint32_t routes, uint32_t mask)
-{
- const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
- if (af == 0) return PERMISSION_DENIED;
- return af->setRouting(mode, routes, mask);
-}
-
-status_t AudioSystem::getRouting(int mode, uint32_t* routes)
-{
- const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
- if (af == 0) return PERMISSION_DENIED;
- uint32_t r = af->getRouting(mode);
- *routes = r;
- return NO_ERROR;
-}
status_t AudioSystem::isMusicActive(bool* state) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
@@ -223,12 +177,20 @@
return NO_ERROR;
}
-// Temporary interface, do not use
-// TODO: Replace with a more generic key:value get/set mechanism
-status_t AudioSystem::setParameter(const char* key, const char* value) {
+
+status_t AudioSystem::setParameters(audio_io_handle_t ioHandle, const String8& keyValuePairs) {
const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
if (af == 0) return PERMISSION_DENIED;
- return af->setParameter(key, value);
+ return af->setParameters(ioHandle, keyValuePairs);
+}
+
+String8 AudioSystem::getParameters(audio_io_handle_t ioHandle, const String8& keys) {
+ const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
+ String8 result = String8("");
+ if (af == 0) return result;
+
+ result = af->getParameters(ioHandle, keys);
+ return result;
}
// convert volume steps to natural log scale
@@ -257,55 +219,108 @@
status_t AudioSystem::getOutputSamplingRate(int* samplingRate, int streamType)
{
- int output = getOutput(streamType);
-
- if (output == NUM_AUDIO_OUTPUT_TYPES) return PERMISSION_DENIED;
+ OutputDescriptor *outputDesc;
+ audio_io_handle_t output;
- // gOutSamplingRate[] is updated by getOutput() which calls get_audio_flinger()
- LOGV("getOutputSamplingRate() streamType %d, output %d, sampling rate %d", streamType, output, gOutSamplingRate[output]);
-
- *samplingRate = gOutSamplingRate[output];
-
+ if (streamType == DEFAULT) {
+ streamType = MUSIC;
+ }
+
+ output = getOutput((stream_type)streamType);
+ if (output == 0) {
+ return PERMISSION_DENIED;
+ }
+
+ gLock.lock();
+ outputDesc = AudioSystem::gOutputs.valueFor(output);
+ if (outputDesc == 0) {
+ LOGV("getOutputSamplingRate() no output descriptor for output %p in gOutputs", output);
+ gLock.unlock();
+ const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
+ if (af == 0) return PERMISSION_DENIED;
+ *samplingRate = af->sampleRate(output);
+ } else {
+ LOGV("getOutputSamplingRate() reading from output desc");
+ *samplingRate = outputDesc->samplingRate;
+ gLock.unlock();
+ }
+
+ LOGV("getOutputSamplingRate() streamType %d, output %p, sampling rate %d", streamType, output, *samplingRate);
+
return NO_ERROR;
}
status_t AudioSystem::getOutputFrameCount(int* frameCount, int streamType)
{
- int output = getOutput(streamType);
+ OutputDescriptor *outputDesc;
+ audio_io_handle_t output;
- if (output == NUM_AUDIO_OUTPUT_TYPES) return PERMISSION_DENIED;
+ if (streamType == DEFAULT) {
+ streamType = MUSIC;
+ }
- // gOutFrameCount[] is updated by getOutput() which calls get_audio_flinger()
- LOGV("getOutputFrameCount() streamType %d, output %d, frame count %d", streamType, output, gOutFrameCount[output]);
+ output = getOutput((stream_type)streamType);
+ if (output == 0) {
+ return PERMISSION_DENIED;
+ }
- *frameCount = gOutFrameCount[output];
-
+ gLock.lock();
+ outputDesc = AudioSystem::gOutputs.valueFor(output);
+ if (outputDesc == 0) {
+ gLock.unlock();
+ const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
+ if (af == 0) return PERMISSION_DENIED;
+ *frameCount = af->frameCount(output);
+ } else {
+ *frameCount = outputDesc->frameCount;
+ gLock.unlock();
+ }
+
+ LOGV("getOutputFrameCount() streamType %d, output %p, frameCount %d", streamType, output, *frameCount);
+
return NO_ERROR;
}
status_t AudioSystem::getOutputLatency(uint32_t* latency, int streamType)
{
- int output = getOutput(streamType);
+ OutputDescriptor *outputDesc;
+ audio_io_handle_t output;
- if (output == NUM_AUDIO_OUTPUT_TYPES) return PERMISSION_DENIED;
+ if (streamType == DEFAULT) {
+ streamType = MUSIC;
+ }
- // gOutLatency[] is updated by getOutput() which calls get_audio_flinger()
- LOGV("getOutputLatency() streamType %d, output %d, latency %d", streamType, output, gOutLatency[output]);
+ output = getOutput((stream_type)streamType);
+ if (output == 0) {
+ return PERMISSION_DENIED;
+ }
- *latency = gOutLatency[output];
-
+ gLock.lock();
+ outputDesc = AudioSystem::gOutputs.valueFor(output);
+ if (outputDesc == 0) {
+ gLock.unlock();
+ const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
+ if (af == 0) return PERMISSION_DENIED;
+ *latency = af->latency(output);
+ } else {
+ *latency = outputDesc->latency;
+ gLock.unlock();
+ }
+
+ LOGV("getOutputLatency() streamType %d, output %p, latency %d", streamType, output, *latency);
+
return NO_ERROR;
}
-status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, int format, int channelCount,
+status_t AudioSystem::getInputBufferSize(uint32_t sampleRate, int format, int channelCount,
size_t* buffSize)
{
// Do we have a stale gInBufferSize or are we requesting the input buffer size for new values
- if ((gInBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat)
+ if ((gInBuffSize == 0) || (sampleRate != gPrevInSamplingRate) || (format != gPrevInFormat)
|| (channelCount != gPrevInChannelCount)) {
// save the request params
gPrevInSamplingRate = sampleRate;
- gPrevInFormat = format;
+ gPrevInFormat = format;
gPrevInChannelCount = channelCount;
gInBuffSize = 0;
@@ -314,24 +329,18 @@
return PERMISSION_DENIED;
}
gInBuffSize = af->getInputBufferSize(sampleRate, format, channelCount);
- }
+ }
*buffSize = gInBuffSize;
-
+
return NO_ERROR;
}
// ---------------------------------------------------------------------------
-void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who) {
+void AudioSystem::AudioFlingerClient::binderDied(const wp<IBinder>& who) {
Mutex::Autolock _l(AudioSystem::gLock);
- AudioSystem::gAudioFlinger.clear();
- for (int output = 0; output < NUM_AUDIO_OUTPUT_TYPES; output++) {
- gOutFrameCount[output] = 0;
- gOutSamplingRate[output] = 0;
- gOutLatency[output] = 0;
- }
- AudioSystem::gInBuffSize = 0;
+ AudioSystem::gAudioFlinger.clear();
if (gAudioErrorCallback) {
gAudioErrorCallback(DEAD_OBJECT);
@@ -339,33 +348,83 @@
LOGW("AudioFlinger server died!");
}
-void AudioSystem::AudioFlingerClient::a2dpEnabledChanged(bool enabled) {
- gA2dpEnabled = enabled;
- LOGV("AudioFlinger A2DP enabled status changed! %d", enabled);
+void AudioSystem::AudioFlingerClient::ioConfigChanged(int event, void *param1, void *param2) {
+ LOGV("ioConfigChanged() event %d", event);
+ audio_io_handle_t ioHandle = (audio_io_handle_t)param1;
+ OutputDescriptor *desc;
+ uint32_t stream;
+
+ if (param1 == 0) return;
+
+ Mutex::Autolock _l(AudioSystem::gLock);
+
+ switch (event) {
+ case STREAM_CONFIG_CHANGED:
+ if (param2 == 0) break;
+ stream = *(uint32_t *)param2;
+ LOGV("ioConfigChanged() STREAM_CONFIG_CHANGED stream %d, output %p", stream, ioHandle);
+ if (gStreamOutputMap.indexOfKey(stream) >= 0) {
+ gStreamOutputMap.replaceValueFor(stream, ioHandle);
+ }
+ break;
+ case OUTPUT_OPENED: {
+ if (gOutputs.indexOfKey(ioHandle) >= 0) {
+ LOGV("ioConfigChanged() opening already existing output! %p", ioHandle);
+ break;
+ }
+ if (param2 == 0) break;
+ desc = (OutputDescriptor *)param2;
+
+ OutputDescriptor *outputDesc = new OutputDescriptor(*desc);
+ gOutputs.add(ioHandle, outputDesc);
+ LOGV("ioConfigChanged() new output samplingRate %d, format %d channels %d frameCount %d latency %d",
+ outputDesc->samplingRate, outputDesc->format, outputDesc->channels, outputDesc->frameCount, outputDesc->latency);
+ } break;
+ case OUTPUT_CLOSED: {
+ if (gOutputs.indexOfKey(ioHandle) < 0) {
+ LOGW("ioConfigChanged() closing unknow output! %p", ioHandle);
+ break;
+ }
+ LOGV("ioConfigChanged() output %p closed", ioHandle);
+
+ gOutputs.removeItem(ioHandle);
+ for (int i = gStreamOutputMap.size() - 1; i >= 0 ; i--) {
+ if (gStreamOutputMap.valueAt(i) == ioHandle) {
+ gStreamOutputMap.removeItemsAt(i);
+ }
+ }
+ } break;
+
+ case OUTPUT_CONFIG_CHANGED: {
+ int index = gOutputs.indexOfKey(ioHandle);
+ if (index < 0) {
+ LOGW("ioConfigChanged() modifying unknow output! %p", ioHandle);
+ break;
+ }
+ if (param2 == 0) break;
+ desc = (OutputDescriptor *)param2;
+
+ LOGV("ioConfigChanged() new config for output %p samplingRate %d, format %d channels %d frameCount %d latency %d",
+ ioHandle, desc->samplingRate, desc->format,
+ desc->channels, desc->frameCount, desc->latency);
+ OutputDescriptor *outputDesc = gOutputs.valueAt(index);
+ delete outputDesc;
+ outputDesc = new OutputDescriptor(*desc);
+ gOutputs.replaceValueFor(ioHandle, outputDesc);
+ } break;
+ case INPUT_OPENED:
+ case INPUT_CLOSED:
+ case INPUT_CONFIG_CHANGED:
+ break;
+
+ }
}
void AudioSystem::setErrorCallback(audio_error_callback cb) {
- Mutex::Autolock _l(AudioSystem::gLock);
+ Mutex::Autolock _l(gLock);
gAudioErrorCallback = cb;
}
-int AudioSystem::getOutput(int streamType)
-{
- // make sure that gA2dpEnabled is valid by calling get_audio_flinger() which in turn
- // will call gAudioFlinger->isA2dpEnabled()
- const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger();
- if (af == 0) return NUM_AUDIO_OUTPUT_TYPES;
-
- if (streamType == DEFAULT) {
- streamType = MUSIC;
- }
- if (gA2dpEnabled && routedToA2dpOutput(streamType)) {
- return AUDIO_OUTPUT_A2DP;
- } else {
- return AUDIO_OUTPUT_HARDWARE;
- }
-}
-
bool AudioSystem::routedToA2dpOutput(int streamType) {
switch(streamType) {
case MUSIC:
@@ -379,6 +438,451 @@
}
+// client singleton for AudioPolicyService binder interface
+sp<IAudioPolicyService> AudioSystem::gAudioPolicyService;
+sp<AudioSystem::AudioPolicyServiceClient> AudioSystem::gAudioPolicyServiceClient;
+
+
+// establish binder interface to AudioFlinger service
+const sp<IAudioPolicyService>& AudioSystem::get_audio_policy_service()
+{
+ gLock.lock();
+ if (gAudioPolicyService.get() == 0) {
+ sp<IServiceManager> sm = defaultServiceManager();
+ sp<IBinder> binder;
+ do {
+ binder = sm->getService(String16("media.audio_policy"));
+ if (binder != 0)
+ break;
+ LOGW("AudioPolicyService not published, waiting...");
+ usleep(500000); // 0.5 s
+ } while(true);
+ if (gAudioPolicyServiceClient == NULL) {
+ gAudioPolicyServiceClient = new AudioPolicyServiceClient();
+ }
+ binder->linkToDeath(gAudioPolicyServiceClient);
+ gAudioPolicyService = interface_cast<IAudioPolicyService>(binder);
+ gLock.unlock();
+ } else {
+ gLock.unlock();
+ }
+ return gAudioPolicyService;
+}
+
+status_t AudioSystem::setDeviceConnectionState(audio_devices device,
+ device_connection_state state,
+ const char *device_address)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+
+ return aps->setDeviceConnectionState(device, state, device_address);
+}
+
+AudioSystem::device_connection_state AudioSystem::getDeviceConnectionState(audio_devices device,
+ const char *device_address)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return DEVICE_STATE_UNAVAILABLE;
+
+ return aps->getDeviceConnectionState(device, device_address);
+}
+
+status_t AudioSystem::setPhoneState(int state)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+
+ return aps->setPhoneState(state);
+}
+
+status_t AudioSystem::setRingerMode(uint32_t mode, uint32_t mask)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->setRingerMode(mode, mask);
+}
+
+status_t AudioSystem::setForceUse(force_use usage, forced_config config)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->setForceUse(usage, config);
+}
+
+AudioSystem::forced_config AudioSystem::getForceUse(force_use usage)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return FORCE_NONE;
+ return aps->getForceUse(usage);
+}
+
+
+audio_io_handle_t AudioSystem::getOutput(stream_type stream,
+ uint32_t samplingRate,
+ uint32_t format,
+ uint32_t channels,
+ output_flags flags)
+{
+ audio_io_handle_t output = NULL;
+ if ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) == 0) {
+ Mutex::Autolock _l(gLock);
+ output = AudioSystem::gStreamOutputMap.valueFor(stream);
+ LOGV_IF((output != NULL), "getOutput() read %p from cache for stream %d", output, stream);
+ }
+ if (output == NULL) {
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return NULL;
+ output = aps->getOutput(stream, samplingRate, format, channels, flags);
+ if ((flags & AudioSystem::OUTPUT_FLAG_DIRECT) == 0) {
+ Mutex::Autolock _l(gLock);
+ AudioSystem::gStreamOutputMap.add(stream, output);
+ }
+ }
+ return output;
+}
+
+status_t AudioSystem::startOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->startOutput(output, stream);
+}
+
+status_t AudioSystem::stopOutput(audio_io_handle_t output, AudioSystem::stream_type stream)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->stopOutput(output, stream);
+}
+
+void AudioSystem::releaseOutput(audio_io_handle_t output)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return;
+ aps->releaseOutput(output);
+}
+
+audio_io_handle_t AudioSystem::getInput(int inputSource,
+ uint32_t samplingRate,
+ uint32_t format,
+ uint32_t channels,
+ audio_in_acoustics acoustics)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return NULL;
+ return aps->getInput(inputSource, samplingRate, format, channels, acoustics);
+}
+
+status_t AudioSystem::startInput(audio_io_handle_t input)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->startInput(input);
+}
+
+status_t AudioSystem::stopInput(audio_io_handle_t input)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->stopInput(input);
+}
+
+void AudioSystem::releaseInput(audio_io_handle_t input)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return;
+ aps->releaseInput(input);
+}
+
+status_t AudioSystem::initStreamVolume(stream_type stream,
+ int indexMin,
+ int indexMax)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->initStreamVolume(stream, indexMin, indexMax);
+}
+
+status_t AudioSystem::setStreamVolumeIndex(stream_type stream, int index)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->setStreamVolumeIndex(stream, index);
+}
+
+status_t AudioSystem::getStreamVolumeIndex(stream_type stream, int *index)
+{
+ const sp<IAudioPolicyService>& aps = AudioSystem::get_audio_policy_service();
+ if (aps == 0) return PERMISSION_DENIED;
+ return aps->getStreamVolumeIndex(stream, index);
+}
+
+// ---------------------------------------------------------------------------
+
+void AudioSystem::AudioPolicyServiceClient::binderDied(const wp<IBinder>& who) {
+ Mutex::Autolock _l(AudioSystem::gLock);
+ AudioSystem::gAudioPolicyService.clear();
+
+ LOGW("AudioPolicyService server died!");
+}
+
+// ---------------------------------------------------------------------------
+
+
+// use emulated popcount optimization
+// http://www.df.lth.se/~john_e/gems/gem002d.html
+uint32_t AudioSystem::popCount(uint32_t u)
+{
+ u = ((u&0x55555555) + ((u>>1)&0x55555555));
+ u = ((u&0x33333333) + ((u>>2)&0x33333333));
+ u = ((u&0x0f0f0f0f) + ((u>>4)&0x0f0f0f0f));
+ u = ((u&0x00ff00ff) + ((u>>8)&0x00ff00ff));
+ u = ( u&0x0000ffff) + (u>>16);
+ return u;
+}
+
+bool AudioSystem::isOutputDevice(audio_devices device)
+{
+ if ((popCount(device) == 1 ) &&
+ ((device & ~AudioSystem::DEVICE_OUT_ALL) == 0)) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool AudioSystem::isInputDevice(audio_devices device)
+{
+ if ((popCount(device) == 1 ) &&
+ ((device & ~AudioSystem::DEVICE_IN_ALL) == 0)) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool AudioSystem::isA2dpDevice(audio_devices device)
+{
+ if ((popCount(device) == 1 ) &&
+ (device & (AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP |
+ AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES |
+ AudioSystem::DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER))) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool AudioSystem::isBluetoothScoDevice(audio_devices device)
+{
+ if ((popCount(device) == 1 ) &&
+ (device & (AudioSystem::DEVICE_OUT_BLUETOOTH_SCO |
+ AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_HEADSET |
+ AudioSystem::DEVICE_OUT_BLUETOOTH_SCO_CARKIT))) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool AudioSystem::isLowVisibility(stream_type stream)
+{
+ if (stream == AudioSystem::SYSTEM || stream == AudioSystem::NOTIFICATION) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool AudioSystem::isInputChannel(uint32_t channel)
+{
+ if ((channel & ~AudioSystem::CHANNEL_IN_ALL) == 0) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool AudioSystem::isOutputChannel(uint32_t channel)
+{
+ if ((channel & ~AudioSystem::CHANNEL_OUT_ALL) == 0) {
+ return true;
+ } else {
+ return false;
+ }
+}
+
+bool AudioSystem::isValidFormat(uint32_t format)
+{
+ switch (format & MAIN_FORMAT_MASK) {
+ case PCM:
+ case MP3:
+ case AMR_NB:
+ case AMR_WB:
+ case AAC:
+ case HE_AAC_V1:
+ case HE_AAC_V2:
+ case VORBIS:
+ return true;
+ default:
+ return false;
+ }
+}
+
+bool AudioSystem::isLinearPCM(uint32_t format)
+{
+ switch (format) {
+ case PCM_16_BIT:
+ case PCM_8_BIT:
+ return true;
+ default:
+ return false;
+ }
+}
+
+//------------------------- AudioParameter class implementation ---------------
+
+const char *AudioParameter::keyRouting = "routing";
+const char *AudioParameter::keySamplingRate = "sampling_rate";
+const char *AudioParameter::keyFormat = "format";
+const char *AudioParameter::keyChannels = "channels";
+const char *AudioParameter::keyFrameCount = "frame_count";
+
+AudioParameter::AudioParameter(const String8& keyValuePairs)
+{
+ char *str = new char[keyValuePairs.length()+1];
+ mKeyValuePairs = keyValuePairs;
+
+ strcpy(str, keyValuePairs.string());
+ char *pair = strtok(str, ";");
+ while (pair != NULL) {
+ if (strlen(pair) != 0) {
+ size_t eqIdx = strcspn(pair, "=");
+ String8 key = String8(pair, eqIdx);
+ String8 value;
+ if (eqIdx == strlen(pair)) {
+ value = String8("");
+ } else {
+ value = String8(pair + eqIdx + 1);
+ }
+ if (mParameters.indexOfKey(key) < 0) {
+ mParameters.add(key, value);
+ } else {
+ mParameters.replaceValueFor(key, value);
+ }
+ } else {
+ LOGV("AudioParameter() cstor empty key value pair");
+ }
+ pair = strtok(NULL, ";");
+ }
+
+ delete[] str;
+}
+
+AudioParameter::~AudioParameter()
+{
+ mParameters.clear();
+}
+
+String8 AudioParameter::toString()
+{
+ String8 str = String8("");
+
+ size_t size = mParameters.size();
+ for (size_t i = 0; i < size; i++) {
+ str += mParameters.keyAt(i);
+ str += "=";
+ str += mParameters.valueAt(i);
+ if (i < (size - 1)) str += ";";
+ }
+ return str;
+}
+
+status_t AudioParameter::add(const String8& key, const String8& value)
+{
+ if (mParameters.indexOfKey(key) < 0) {
+ mParameters.add(key, value);
+ return NO_ERROR;
+ } else {
+ mParameters.replaceValueFor(key, value);
+ return ALREADY_EXISTS;
+ }
+}
+
+status_t AudioParameter::addInt(const String8& key, const int value)
+{
+ char str[12];
+ if (snprintf(str, 12, "%d", value) > 0) {
+ String8 str8 = String8(str);
+ return add(key, str8);
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+status_t AudioParameter::addFloat(const String8& key, const float value)
+{
+ char str[23];
+ if (snprintf(str, 23, "%.10f", value) > 0) {
+ String8 str8 = String8(str);
+ return add(key, str8);
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+status_t AudioParameter::remove(const String8& key)
+{
+ if (mParameters.indexOfKey(key) >= 0) {
+ mParameters.removeItem(key);
+ return NO_ERROR;
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+status_t AudioParameter::get(const String8& key, String8& value)
+{
+ if (mParameters.indexOfKey(key) >= 0) {
+ value = mParameters.valueFor(key);
+ return NO_ERROR;
+ } else {
+ return BAD_VALUE;
+ }
+}
+
+status_t AudioParameter::getInt(const String8& key, int& value)
+{
+ String8 str8;
+ status_t result = get(key, str8);
+ value = 0;
+ if (result == NO_ERROR) {
+ int val;
+ if (sscanf(str8.string(), "%d", &val) == 1) {
+ value = val;
+ } else {
+ result = INVALID_OPERATION;
+ }
+ }
+ return result;
+}
+
+status_t AudioParameter::getFloat(const String8& key, float& value)
+{
+ String8 str8;
+ status_t result = get(key, str8);
+ value = 0;
+ if (result == NO_ERROR) {
+ float val;
+ if (sscanf(str8.string(), "%f", &val) == 1) {
+ value = val;
+ } else {
+ result = INVALID_OPERATION;
+ }
+ }
+ return result;
+}
}; // namespace android