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PL286/hardware/qcom/audio/legacy/alsa_sound/AudioStreamOutALSA.cpp

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/* 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