| /* AudioStreamOutALSA.cpp |
| ** |
| ** Copyright 2008-2009 Wind River Systems |
| ** Copyright (c) 2011, Code Aurora Forum. All rights reserved. |
| ** |
| ** 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. |
| */ |
| |
| #include <errno.h> |
| #include <stdarg.h> |
| #include <sys/stat.h> |
| #include <fcntl.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include <dlfcn.h> |
| #include <math.h> |
| |
| #define LOG_TAG "AudioStreamOutALSA" |
| //#define LOG_NDEBUG 0 |
| #define LOG_NDDEBUG 0 |
| #include <utils/Log.h> |
| #include <utils/String8.h> |
| |
| #include <cutils/properties.h> |
| #include <media/AudioRecord.h> |
| #include <hardware_legacy/power.h> |
| |
| #include "AudioHardwareALSA.h" |
| |
| #ifndef ALSA_DEFAULT_SAMPLE_RATE |
| #define ALSA_DEFAULT_SAMPLE_RATE 44100 // in Hz |
| #endif |
| |
| namespace android_audio_legacy |
| { |
| |
| // ---------------------------------------------------------------------------- |
| |
| static const int DEFAULT_SAMPLE_RATE = ALSA_DEFAULT_SAMPLE_RATE; |
| |
| // ---------------------------------------------------------------------------- |
| |
| AudioStreamOutALSA::AudioStreamOutALSA(AudioHardwareALSA *parent, alsa_handle_t *handle) : |
| ALSAStreamOps(parent, handle), |
| mParent(parent), |
| mFrameCount(0) |
| { |
| } |
| |
| AudioStreamOutALSA::~AudioStreamOutALSA() |
| { |
| close(); |
| } |
| |
| uint32_t AudioStreamOutALSA::channels() const |
| { |
| int c = ALSAStreamOps::channels(); |
| return c; |
| } |
| |
| status_t AudioStreamOutALSA::setVolume(float left, float right) |
| { |
| int vol; |
| float volume; |
| status_t status = NO_ERROR; |
| |
| volume = (left + right) / 2; |
| if (volume < 0.0) { |
| ALOGW("AudioSessionOutALSA::setVolume(%f) under 0.0, assuming 0.0\n", volume); |
| volume = 0.0; |
| } else if (volume > 1.0) { |
| ALOGW("AudioSessionOutALSA::setVolume(%f) over 1.0, assuming 1.0\n", volume); |
| volume = 1.0; |
| } |
| vol = lrint((volume * 0x2000)+0.5); |
| |
| if(!strcmp(mHandle->useCase, SND_USE_CASE_VERB_HIFI_LOW_POWER) || |
| !strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_LPA)) { |
| ALOGV("setLpaVolume(%f)\n", volume); |
| ALOGV("Setting LPA volume to %d (available range is 0 to 100)\n", vol); |
| mHandle->module->setLpaVolume(vol); |
| return status; |
| } |
| else if(!strcmp(mHandle->useCase, SND_USE_CASE_VERB_HIFI_TUNNEL) || |
| !strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_TUNNEL)) { |
| ALOGV("setCompressedVolume(%f)\n", volume); |
| ALOGV("Setting Compressed volume to %d (available range is 0 to 100)\n", vol); |
| mHandle->module->setCompressedVolume(vol); |
| return status; |
| } |
| else if(!strncmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL, |
| sizeof(mHandle->useCase)) || !strncmp(mHandle->useCase, |
| SND_USE_CASE_MOD_PLAY_VOIP, sizeof(mHandle->useCase))) { |
| ALOGV("Avoid Software volume by returning success\n"); |
| return status; |
| } |
| return INVALID_OPERATION; |
| } |
| |
| ssize_t AudioStreamOutALSA::write(const void *buffer, size_t bytes) |
| { |
| int period_size; |
| char *use_case; |
| |
| ALOGV("write:: buffer %p, bytes %d", buffer, bytes); |
| |
| snd_pcm_sframes_t n = 0; |
| size_t sent = 0; |
| status_t err; |
| |
| int write_pending = bytes; |
| |
| if((mHandle->handle == NULL) && (mHandle->rxHandle == NULL) && |
| (strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL)) && |
| (strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP))) { |
| mParent->mLock.lock(); |
| |
| ALOGD("mHandle->useCase: %s", mHandle->useCase); |
| snd_use_case_get(mHandle->ucMgr, "_verb", (const char **)&use_case); |
| if ((use_case == NULL) || (!strcmp(use_case, SND_USE_CASE_VERB_INACTIVE))) { |
| if(!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP)){ |
| strlcpy(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL, |
| sizeof(SND_USE_CASE_VERB_IP_VOICECALL)); |
| } else if(!strcmp(mHandle->useCase,SND_USE_CASE_MOD_PLAY_MUSIC2)) { |
| strlcpy(mHandle->useCase, SND_USE_CASE_VERB_HIFI2, |
| sizeof(SND_USE_CASE_MOD_PLAY_MUSIC2)); |
| } else if (!strcmp(mHandle->useCase,SND_USE_CASE_MOD_PLAY_MUSIC)){ |
| strlcpy(mHandle->useCase, SND_USE_CASE_VERB_HIFI, |
| sizeof(SND_USE_CASE_MOD_PLAY_MUSIC)); |
| } else if(!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_LOWLATENCY_MUSIC)) { |
| strlcpy(mHandle->useCase, SND_USE_CASE_VERB_HIFI_LOWLATENCY_MUSIC, |
| sizeof(SND_USE_CASE_MOD_PLAY_LOWLATENCY_MUSIC)); |
| } |
| } else { |
| if(!strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL)){ |
| strlcpy(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP, |
| sizeof(SND_USE_CASE_MOD_PLAY_VOIP)); |
| } else if(!strcmp(mHandle->useCase,SND_USE_CASE_VERB_HIFI2)) { |
| strlcpy(mHandle->useCase, SND_USE_CASE_MOD_PLAY_MUSIC2, |
| sizeof(SND_USE_CASE_MOD_PLAY_MUSIC2)); |
| } else if (!strcmp(mHandle->useCase,SND_USE_CASE_VERB_HIFI)){ |
| strlcpy(mHandle->useCase, SND_USE_CASE_MOD_PLAY_MUSIC, |
| sizeof(SND_USE_CASE_MOD_PLAY_MUSIC)); |
| } else if(!strcmp(mHandle->useCase, SND_USE_CASE_VERB_HIFI_LOWLATENCY_MUSIC)) { |
| strlcpy(mHandle->useCase, SND_USE_CASE_MOD_PLAY_LOWLATENCY_MUSIC, |
| sizeof(SND_USE_CASE_MOD_PLAY_LOWLATENCY_MUSIC)); |
| } |
| } |
| free(use_case); |
| if((!strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL)) || |
| (!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP))) { |
| #ifdef QCOM_USBAUDIO_ENABLED |
| if((mDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET)|| |
| (mDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET)|| |
| (mDevices & AudioSystem::DEVICE_OUT_PROXY)) { |
| mDevices |= AudioSystem::DEVICE_OUT_PROXY; |
| mHandle->module->route(mHandle, mDevices , mParent->mode()); |
| }else |
| #endif |
| { |
| mHandle->module->route(mHandle, mDevices , AudioSystem::MODE_IN_COMMUNICATION); |
| } |
| #ifdef QCOM_USBAUDIO_ENABLED |
| } else if((mDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET)|| |
| (mDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET)|| |
| (mDevices & AudioSystem::DEVICE_OUT_PROXY)) { |
| mDevices |= AudioSystem::DEVICE_OUT_PROXY; |
| mHandle->module->route(mHandle, mDevices , mParent->mode()); |
| #endif |
| } else { |
| mHandle->module->route(mHandle, mDevices , mParent->mode()); |
| } |
| if (!strcmp(mHandle->useCase, SND_USE_CASE_VERB_HIFI) || |
| !strcmp(mHandle->useCase, SND_USE_CASE_VERB_HIFI2) || |
| !strcmp(mHandle->useCase, SND_USE_CASE_VERB_HIFI_LOWLATENCY_MUSIC) || |
| !strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL)) { |
| snd_use_case_set(mHandle->ucMgr, "_verb", mHandle->useCase); |
| } else { |
| snd_use_case_set(mHandle->ucMgr, "_enamod", mHandle->useCase); |
| } |
| if((!strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL)) || |
| (!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP))) { |
| err = mHandle->module->startVoipCall(mHandle); |
| } |
| else |
| mHandle->module->open(mHandle); |
| if(mHandle->handle == NULL) { |
| ALOGE("write:: device open failed"); |
| mParent->mLock.unlock(); |
| return bytes; |
| } |
| #ifdef QCOM_USBAUDIO_ENABLED |
| if((mHandle->devices == AudioSystem::DEVICE_IN_ANLG_DOCK_HEADSET)|| |
| (mHandle->devices == AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET)){ |
| if((!strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL)) || |
| (!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP))) { |
| mParent->musbPlaybackState |= USBPLAYBACKBIT_VOIPCALL; |
| } else { |
| mParent->startUsbPlaybackIfNotStarted(); |
| mParent->musbPlaybackState |= USBPLAYBACKBIT_MUSIC; |
| } |
| } |
| #endif |
| |
| mParent->mLock.unlock(); |
| } |
| |
| #ifdef QCOM_USBAUDIO_ENABLED |
| if(((mDevices & AudioSystem::DEVICE_OUT_ANLG_DOCK_HEADSET) || |
| (mDevices & AudioSystem::DEVICE_OUT_DGTL_DOCK_HEADSET)) && |
| (!mParent->musbPlaybackState)) { |
| mParent->mLock.lock(); |
| mParent->startUsbPlaybackIfNotStarted(); |
| ALOGV("Starting playback on USB"); |
| if(!strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL) || |
| !strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP)) { |
| ALOGD("Setting VOIPCALL bit here, musbPlaybackState %d", mParent->musbPlaybackState); |
| mParent->musbPlaybackState |= USBPLAYBACKBIT_VOIPCALL; |
| }else{ |
| ALOGV("enabling music, musbPlaybackState: %d ", mParent->musbPlaybackState); |
| mParent->musbPlaybackState |= USBPLAYBACKBIT_MUSIC; |
| } |
| mParent->mLock.unlock(); |
| } |
| #endif |
| |
| period_size = mHandle->periodSize; |
| do { |
| if (write_pending < period_size) { |
| write_pending = period_size; |
| } |
| if((mParent->mVoipStreamCount) && (mHandle->rxHandle != 0)) { |
| n = pcm_write(mHandle->rxHandle, |
| (char *)buffer + sent, |
| period_size); |
| } else if (mHandle->handle != 0){ |
| n = pcm_write(mHandle->handle, |
| (char *)buffer + sent, |
| period_size); |
| } |
| if (n < 0) { |
| mParent->mLock.lock(); |
| if (mHandle->handle != NULL) { |
| ALOGE("pcm_write returned error %d, trying to recover\n", n); |
| pcm_close(mHandle->handle); |
| mHandle->handle = NULL; |
| if((!strncmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL, strlen(SND_USE_CASE_VERB_IP_VOICECALL))) || |
| (!strncmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP, strlen(SND_USE_CASE_MOD_PLAY_VOIP)))) { |
| pcm_close(mHandle->rxHandle); |
| mHandle->rxHandle = NULL; |
| mHandle->module->startVoipCall(mHandle); |
| } |
| else |
| mHandle->module->open(mHandle); |
| if(mHandle->handle == NULL) { |
| ALOGE("write:: device re-open failed"); |
| mParent->mLock.unlock(); |
| return bytes; |
| } |
| } |
| mParent->mLock.unlock(); |
| continue; |
| } |
| else { |
| mFrameCount += n; |
| sent += static_cast<ssize_t>((period_size)); |
| write_pending -= period_size; |
| } |
| |
| } while ((mHandle->handle||(mHandle->rxHandle && mParent->mVoipStreamCount)) && sent < bytes); |
| |
| return sent; |
| } |
| |
| status_t AudioStreamOutALSA::dump(int fd, const Vector<String16>& args) |
| { |
| return NO_ERROR; |
| } |
| |
| status_t AudioStreamOutALSA::open(int mode) |
| { |
| Mutex::Autolock autoLock(mParent->mLock); |
| |
| return ALSAStreamOps::open(mode); |
| } |
| |
| status_t AudioStreamOutALSA::close() |
| { |
| Mutex::Autolock autoLock(mParent->mLock); |
| |
| ALOGV("close"); |
| if((!strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL)) || |
| (!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP))) { |
| if((mParent->mVoipStreamCount)) { |
| #ifdef QCOM_USBAUDIO_ENABLED |
| if(mParent->mVoipStreamCount == 1) { |
| ALOGV("Deregistering VOIP Call bit, musbPlaybackState:%d, musbRecordingState: %d", |
| mParent->musbPlaybackState, mParent->musbRecordingState); |
| mParent->musbPlaybackState &= ~USBPLAYBACKBIT_VOIPCALL; |
| mParent->musbRecordingState &= ~USBRECBIT_VOIPCALL; |
| mParent->closeUsbPlaybackIfNothingActive(); |
| mParent->closeUsbRecordingIfNothingActive(); |
| } |
| #endif |
| return NO_ERROR; |
| } |
| mParent->mVoipStreamCount = 0; |
| } |
| #ifdef QCOM_USBAUDIO_ENABLED |
| else if((!strcmp(mHandle->useCase, SND_USE_CASE_VERB_HIFI_LOW_POWER)) || |
| (!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_LPA))) { |
| mParent->musbPlaybackState &= ~USBPLAYBACKBIT_LPA; |
| } else { |
| mParent->musbPlaybackState &= ~USBPLAYBACKBIT_MUSIC; |
| } |
| |
| mParent->closeUsbPlaybackIfNothingActive(); |
| #endif |
| |
| ALSAStreamOps::close(); |
| |
| return NO_ERROR; |
| } |
| |
| status_t AudioStreamOutALSA::standby() |
| { |
| Mutex::Autolock autoLock(mParent->mLock); |
| |
| ALOGV("standby"); |
| |
| if((!strcmp(mHandle->useCase, SND_USE_CASE_VERB_IP_VOICECALL)) || |
| (!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_VOIP))) { |
| return NO_ERROR; |
| } |
| |
| #ifdef QCOM_USBAUDIO_ENABLED |
| if((!strcmp(mHandle->useCase, SND_USE_CASE_VERB_HIFI_LOW_POWER)) || |
| (!strcmp(mHandle->useCase, SND_USE_CASE_MOD_PLAY_LPA))) { |
| ALOGV("Deregistering LPA bit"); |
| mParent->musbPlaybackState &= ~USBPLAYBACKBIT_LPA; |
| } else { |
| ALOGV("Deregistering MUSIC bit, musbPlaybackState: %d", mParent->musbPlaybackState); |
| mParent->musbPlaybackState &= ~USBPLAYBACKBIT_MUSIC; |
| } |
| #endif |
| |
| mHandle->module->standby(mHandle); |
| |
| #ifdef QCOM_USBAUDIO_ENABLED |
| mParent->closeUsbPlaybackIfNothingActive(); |
| #endif |
| |
| mFrameCount = 0; |
| |
| return NO_ERROR; |
| } |
| |
| #define USEC_TO_MSEC(x) ((x + 999) / 1000) |
| |
| uint32_t AudioStreamOutALSA::latency() const |
| { |
| // Android wants latency in milliseconds. |
| return USEC_TO_MSEC (mHandle->latency); |
| } |
| |
| // return the number of audio frames written by the audio dsp to DAC since |
| // the output has exited standby |
| status_t AudioStreamOutALSA::getRenderPosition(uint32_t *dspFrames) |
| { |
| *dspFrames = mFrameCount; |
| return NO_ERROR; |
| } |
| |
| } // namespace android_audio_legacy |
