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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:45 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:45 -0800 |
commit | d83a98f4ce9cfa908f5c54bbd70f03eec07e7553 (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /media/libmedia/AudioSystem.cpp | |
parent | 076357b8567458d4b6dfdcf839ef751634cd2bfb (diff) | |
download | frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.zip frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.tar.gz frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'media/libmedia/AudioSystem.cpp')
-rw-r--r-- | media/libmedia/AudioSystem.cpp | 383 |
1 files changed, 0 insertions, 383 deletions
diff --git a/media/libmedia/AudioSystem.cpp b/media/libmedia/AudioSystem.cpp deleted file mode 100644 index 63dfc3b..0000000 --- a/media/libmedia/AudioSystem.cpp +++ /dev/null @@ -1,383 +0,0 @@ -/* - * Copyright (C) 2006-2007 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 "AudioSystem" -//#define LOG_NDEBUG 0 - -#include <utils/Log.h> -#include <utils/IServiceManager.h> -#include <media/AudioSystem.h> -#include <math.h> - -namespace android { - -// client singleton for AudioFlinger binder interface -Mutex AudioSystem::gLock; -sp<IAudioFlinger> AudioSystem::gAudioFlinger; -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; -// Cached values for recording queries -uint32_t AudioSystem::gPrevInSamplingRate = 16000; -int AudioSystem::gPrevInFormat = AudioSystem::PCM_16_BIT; -int AudioSystem::gPrevInChannelCount = 1; -size_t AudioSystem::gInBuffSize = 0; - - -// establish binder interface to AudioFlinger service -const sp<IAudioFlinger>& AudioSystem::get_audio_flinger() -{ - Mutex::Autolock _l(gLock); - if (gAudioFlinger.get() == 0) { - sp<IServiceManager> sm = defaultServiceManager(); - sp<IBinder> binder; - do { - binder = sm->getService(String16("media.audio_flinger")); - if (binder != 0) - break; - LOGW("AudioFlinger not published, waiting..."); - usleep(500000); // 0.5 s - } while(true); - if (gAudioFlingerClient == NULL) { - gAudioFlingerClient = new AudioFlingerClient(); - } else { - if (gAudioErrorCallback) { - gAudioErrorCallback(NO_ERROR); - } - } - 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; - return af->setMicMute(state); -} - -status_t AudioSystem::isMicrophoneMuted(bool* state) { - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - *state = af->getMicMute(); - return NO_ERROR; -} - -status_t AudioSystem::setMasterVolume(float value) -{ - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - af->setMasterVolume(value); - return NO_ERROR; -} - -status_t AudioSystem::setMasterMute(bool mute) -{ - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - af->setMasterMute(mute); - return NO_ERROR; -} - -status_t AudioSystem::getMasterVolume(float* volume) -{ - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - *volume = af->masterVolume(); - return NO_ERROR; -} - -status_t AudioSystem::getMasterMute(bool* mute) -{ - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - *mute = af->masterMute(); - return NO_ERROR; -} - -status_t AudioSystem::setStreamVolume(int stream, float value) -{ - 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); - return NO_ERROR; -} - -status_t AudioSystem::setStreamMute(int stream, bool mute) -{ - 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->setStreamMute(stream, mute); - return NO_ERROR; -} - -status_t AudioSystem::getStreamVolume(int stream, float* volume) -{ - 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); - return NO_ERROR; -} - -status_t AudioSystem::getStreamMute(int stream, bool* mute) -{ - if (uint32_t(stream) >= NUM_STREAM_TYPES) return BAD_VALUE; - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - *mute = af->streamMute(stream); - return NO_ERROR; -} - -status_t AudioSystem::setMode(int mode) -{ - if (mode >= NUM_MODES) return BAD_VALUE; - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - 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(); - if (af == 0) return PERMISSION_DENIED; - *state = af->isMusicActive(); - 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) { - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - return af->setParameter(key, value); -} - -// convert volume steps to natural log scale - -// change this value to change volume scaling -static const float dBPerStep = 0.5f; -// shouldn't need to touch these -static const float dBConvert = -dBPerStep * 2.302585093f / 20.0f; -static const float dBConvertInverse = 1.0f / dBConvert; - -float AudioSystem::linearToLog(int volume) -{ - // float v = volume ? exp(float(100 - volume) * dBConvert) : 0; - // LOGD("linearToLog(%d)=%f", volume, v); - // return v; - return volume ? exp(float(100 - volume) * dBConvert) : 0; -} - -int AudioSystem::logToLinear(float volume) -{ - // int v = volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; - // LOGD("logTolinear(%d)=%f", v, volume); - // return v; - return volume ? 100 - int(dBConvertInverse * log(volume) + 0.5) : 0; -} - -status_t AudioSystem::getOutputSamplingRate(int* samplingRate, int streamType) -{ - int output = getOutput(streamType); - - if (gOutSamplingRate[output] == 0) { - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - // gOutSamplingRate is updated by get_audio_flinger() - } - LOGV("getOutputSamplingRate() streamType %d, output %d, sampling rate %d", streamType, output, gOutSamplingRate[output]); - *samplingRate = gOutSamplingRate[output]; - - return NO_ERROR; -} - -status_t AudioSystem::getOutputFrameCount(int* frameCount, int streamType) -{ - int output = getOutput(streamType); - - if (gOutFrameCount[output] == 0) { - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - // gOutFrameCount is updated by get_audio_flinger() - } - LOGV("getOutputFrameCount() streamType %d, output %d, frame count %d", streamType, output, gOutFrameCount[output]); - - *frameCount = gOutFrameCount[output]; - return NO_ERROR; -} - -status_t AudioSystem::getOutputLatency(uint32_t* latency, int streamType) -{ - int output = getOutput(streamType); - - if (gOutLatency[output] == 0) { - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) return PERMISSION_DENIED; - // gOutLatency is updated by get_audio_flinger() - } - LOGV("getOutputLatency() streamType %d, output %d, latency %d", streamType, output, gOutLatency[output]); - - *latency = gOutLatency[output]; - - return NO_ERROR; -} - -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) - || (channelCount != gPrevInChannelCount)) { - // save the request params - gPrevInSamplingRate = sampleRate; - gPrevInFormat = format; - gPrevInChannelCount = channelCount; - - gInBuffSize = 0; - const sp<IAudioFlinger>& af = AudioSystem::get_audio_flinger(); - if (af == 0) { - return PERMISSION_DENIED; - } - gInBuffSize = af->getInputBufferSize(sampleRate, format, channelCount); - } - *buffSize = gInBuffSize; - - return NO_ERROR; -} - -// --------------------------------------------------------------------------- - -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; - - if (gAudioErrorCallback) { - gAudioErrorCallback(DEAD_OBJECT); - } - LOGW("AudioFlinger server died!"); -} - -void AudioSystem::AudioFlingerClient::a2dpEnabledChanged(bool enabled) { - gA2dpEnabled = enabled; - LOGV("AudioFlinger A2DP enabled status changed! %d", enabled); -} - -void AudioSystem::setErrorCallback(audio_error_callback cb) { - Mutex::Autolock _l(AudioSystem::gLock); - gAudioErrorCallback = cb; -} - -int AudioSystem::getOutput(int streamType) -{ - 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: - case VOICE_CALL: - case BLUETOOTH_SCO: - case SYSTEM: - return true; - default: - return false; - } -} - - - -}; // namespace android - |