blob: 75440526820f5250cbfe785b6d0e92ada264487b [file] [log] [blame]
/*
**
** Copyright 2014, 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 "AudioFlinger::PatchPanel"
//#define LOG_NDEBUG 0
#include "Configuration.h"
#include <utils/Log.h>
#include <audio_utils/primitives.h>
#include "AudioFlinger.h"
#include "ServiceUtilities.h"
#include <media/AudioParameter.h>
// ----------------------------------------------------------------------------
// Note: the following macro is used for extremely verbose logging message. In
// order to run with ALOG_ASSERT turned on, we need to have LOG_NDEBUG set to
// 0; but one side effect of this is to turn all LOGV's as well. Some messages
// are so verbose that we want to suppress them even when we have ALOG_ASSERT
// turned on. Do not uncomment the #def below unless you really know what you
// are doing and want to see all of the extremely verbose messages.
//#define VERY_VERY_VERBOSE_LOGGING
#ifdef VERY_VERY_VERBOSE_LOGGING
#define ALOGVV ALOGV
#else
#define ALOGVV(a...) do { } while(0)
#endif
namespace android {
/* List connected audio ports and their attributes */
status_t AudioFlinger::listAudioPorts(unsigned int *num_ports,
struct audio_port *ports)
{
Mutex::Autolock _l(mLock);
if (mPatchPanel != 0) {
return mPatchPanel->listAudioPorts(num_ports, ports);
}
return NO_INIT;
}
/* Get supported attributes for a given audio port */
status_t AudioFlinger::getAudioPort(struct audio_port *port)
{
Mutex::Autolock _l(mLock);
if (mPatchPanel != 0) {
return mPatchPanel->getAudioPort(port);
}
return NO_INIT;
}
/* Connect a patch between several source and sink ports */
status_t AudioFlinger::createAudioPatch(const struct audio_patch *patch,
audio_patch_handle_t *handle)
{
Mutex::Autolock _l(mLock);
if (mPatchPanel != 0) {
return mPatchPanel->createAudioPatch(patch, handle);
}
return NO_INIT;
}
/* Disconnect a patch */
status_t AudioFlinger::releaseAudioPatch(audio_patch_handle_t handle)
{
Mutex::Autolock _l(mLock);
if (mPatchPanel != 0) {
return mPatchPanel->releaseAudioPatch(handle);
}
return NO_INIT;
}
/* List connected audio ports and they attributes */
status_t AudioFlinger::listAudioPatches(unsigned int *num_patches,
struct audio_patch *patches)
{
Mutex::Autolock _l(mLock);
if (mPatchPanel != 0) {
return mPatchPanel->listAudioPatches(num_patches, patches);
}
return NO_INIT;
}
/* Set audio port configuration */
status_t AudioFlinger::setAudioPortConfig(const struct audio_port_config *config)
{
Mutex::Autolock _l(mLock);
if (mPatchPanel != 0) {
return mPatchPanel->setAudioPortConfig(config);
}
return NO_INIT;
}
AudioFlinger::PatchPanel::PatchPanel(const sp<AudioFlinger>& audioFlinger)
: mAudioFlinger(audioFlinger)
{
}
AudioFlinger::PatchPanel::~PatchPanel()
{
}
/* List connected audio ports and their attributes */
status_t AudioFlinger::PatchPanel::listAudioPorts(unsigned int *num_ports __unused,
struct audio_port *ports __unused)
{
ALOGV("listAudioPorts");
return NO_ERROR;
}
/* Get supported attributes for a given audio port */
status_t AudioFlinger::PatchPanel::getAudioPort(struct audio_port *port __unused)
{
ALOGV("getAudioPort");
return NO_ERROR;
}
/* Connect a patch between several source and sink ports */
status_t AudioFlinger::PatchPanel::createAudioPatch(const struct audio_patch *patch,
audio_patch_handle_t *handle)
{
ALOGV("createAudioPatch() num_sources %d num_sinks %d handle %d",
patch->num_sources, patch->num_sinks, *handle);
status_t status = NO_ERROR;
audio_patch_handle_t halHandle = AUDIO_PATCH_HANDLE_NONE;
sp<AudioFlinger> audioflinger = mAudioFlinger.promote();
if (audioflinger == 0) {
return NO_INIT;
}
if (handle == NULL || patch == NULL) {
return BAD_VALUE;
}
if (patch->num_sources == 0 || patch->num_sources > AUDIO_PATCH_PORTS_MAX ||
patch->num_sinks == 0 || patch->num_sinks > AUDIO_PATCH_PORTS_MAX) {
return BAD_VALUE;
}
// limit number of sources to 1 for now or 2 sources for special cross hw module case.
// only the audio policy manager can request a patch creation with 2 sources.
if (patch->num_sources > 2) {
return INVALID_OPERATION;
}
if (*handle != AUDIO_PATCH_HANDLE_NONE) {
for (size_t index = 0; *handle != 0 && index < mPatches.size(); index++) {
if (*handle == mPatches[index]->mHandle) {
ALOGV("createAudioPatch() removing patch handle %d", *handle);
halHandle = mPatches[index]->mHalHandle;
mPatches.removeAt(index);
break;
}
}
}
Patch *newPatch = new Patch(patch);
switch (patch->sources[0].type) {
case AUDIO_PORT_TYPE_DEVICE: {
audio_module_handle_t srcModule = patch->sources[0].ext.device.hw_module;
ssize_t index = audioflinger->mAudioHwDevs.indexOfKey(srcModule);
if (index < 0) {
ALOGW("createAudioPatch() bad src hw module %d", srcModule);
status = BAD_VALUE;
goto exit;
}
AudioHwDevice *audioHwDevice = audioflinger->mAudioHwDevs.valueAt(index);
for (unsigned int i = 0; i < patch->num_sinks; i++) {
// support only one sink if connection to a mix or across HW modules
if ((patch->sinks[i].type == AUDIO_PORT_TYPE_MIX ||
patch->sinks[i].ext.mix.hw_module != srcModule) &&
patch->num_sinks > 1) {
status = INVALID_OPERATION;
goto exit;
}
// reject connection to different sink types
if (patch->sinks[i].type != patch->sinks[0].type) {
ALOGW("createAudioPatch() different sink types in same patch not supported");
status = BAD_VALUE;
goto exit;
}
// limit to connections between devices and input streams for HAL before 3.0
if (patch->sinks[i].ext.mix.hw_module == srcModule &&
(audioHwDevice->version() < AUDIO_DEVICE_API_VERSION_3_0) &&
(patch->sinks[i].type != AUDIO_PORT_TYPE_MIX)) {
ALOGW("createAudioPatch() invalid sink type %d for device source",
patch->sinks[i].type);
status = BAD_VALUE;
goto exit;
}
}
if (patch->sinks[0].ext.device.hw_module != srcModule) {
// limit to device to device connection if not on same hw module
if (patch->sinks[0].type != AUDIO_PORT_TYPE_DEVICE) {
ALOGW("createAudioPatch() invalid sink type for cross hw module");
status = INVALID_OPERATION;
goto exit;
}
// special case num sources == 2 -=> reuse an exiting output mix to connect to the
// sink
if (patch->num_sources == 2) {
if (patch->sources[1].type != AUDIO_PORT_TYPE_MIX ||
patch->sinks[0].ext.device.hw_module !=
patch->sources[1].ext.mix.hw_module) {
ALOGW("createAudioPatch() invalid source combination");
status = INVALID_OPERATION;
goto exit;
}
sp<ThreadBase> thread =
audioflinger->checkPlaybackThread_l(patch->sources[1].ext.mix.handle);
newPatch->mPlaybackThread = (MixerThread *)thread.get();
if (thread == 0) {
ALOGW("createAudioPatch() cannot get playback thread");
status = INVALID_OPERATION;
goto exit;
}
} else {
audio_config_t config = AUDIO_CONFIG_INITIALIZER;
audio_devices_t device = patch->sinks[0].ext.device.type;
String8 address = String8(patch->sinks[0].ext.device.address);
audio_io_handle_t output = AUDIO_IO_HANDLE_NONE;
newPatch->mPlaybackThread = audioflinger->openOutput_l(
patch->sinks[0].ext.device.hw_module,
&output,
&config,
device,
address,
AUDIO_OUTPUT_FLAG_NONE);
ALOGV("audioflinger->openOutput_l() returned %p",
newPatch->mPlaybackThread.get());
if (newPatch->mPlaybackThread == 0) {
status = NO_MEMORY;
goto exit;
}
}
uint32_t channelCount = newPatch->mPlaybackThread->channelCount();
audio_devices_t device = patch->sources[0].ext.device.type;
String8 address = String8(patch->sources[0].ext.device.address);
audio_config_t config = AUDIO_CONFIG_INITIALIZER;
audio_channel_mask_t inChannelMask = audio_channel_in_mask_from_count(channelCount);
config.sample_rate = newPatch->mPlaybackThread->sampleRate();
config.channel_mask = inChannelMask;
config.format = newPatch->mPlaybackThread->format();
audio_io_handle_t input = AUDIO_IO_HANDLE_NONE;
newPatch->mRecordThread = audioflinger->openInput_l(srcModule,
&input,
&config,
device,
address,
AUDIO_SOURCE_MIC,
AUDIO_INPUT_FLAG_NONE);
ALOGV("audioflinger->openInput_l() returned %p inChannelMask %08x",
newPatch->mRecordThread.get(), inChannelMask);
if (newPatch->mRecordThread == 0) {
status = NO_MEMORY;
goto exit;
}
status = createPatchConnections(newPatch, patch);
if (status != NO_ERROR) {
goto exit;
}
} else {
if (audioHwDevice->version() >= AUDIO_DEVICE_API_VERSION_3_0) {
if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) {
sp<ThreadBase> thread = audioflinger->checkRecordThread_l(
patch->sinks[0].ext.mix.handle);
if (thread == 0) {
ALOGW("createAudioPatch() bad capture I/O handle %d",
patch->sinks[0].ext.mix.handle);
status = BAD_VALUE;
goto exit;
}
status = thread->sendCreateAudioPatchConfigEvent(patch, &halHandle);
} else {
audio_hw_device_t *hwDevice = audioHwDevice->hwDevice();
status = hwDevice->create_audio_patch(hwDevice,
patch->num_sources,
patch->sources,
patch->num_sinks,
patch->sinks,
&halHandle);
}
} else {
sp<ThreadBase> thread = audioflinger->checkRecordThread_l(
patch->sinks[0].ext.mix.handle);
if (thread == 0) {
ALOGW("createAudioPatch() bad capture I/O handle %d",
patch->sinks[0].ext.mix.handle);
status = BAD_VALUE;
goto exit;
}
char *address;
if (strcmp(patch->sources[0].ext.device.address, "") != 0) {
address = audio_device_address_to_parameter(
patch->sources[0].ext.device.type,
patch->sources[0].ext.device.address);
} else {
address = (char *)calloc(1, 1);
}
AudioParameter param = AudioParameter(String8(address));
free(address);
param.addInt(String8(AUDIO_PARAMETER_STREAM_ROUTING),
(int)patch->sources[0].ext.device.type);
param.addInt(String8(AUDIO_PARAMETER_STREAM_INPUT_SOURCE),
(int)patch->sinks[0].ext.mix.usecase.source);
ALOGV("createAudioPatch() AUDIO_PORT_TYPE_DEVICE setParameters %s",
param.toString().string());
status = thread->setParameters(param.toString());
}
}
} break;
case AUDIO_PORT_TYPE_MIX: {
audio_module_handle_t srcModule = patch->sources[0].ext.mix.hw_module;
ssize_t index = audioflinger->mAudioHwDevs.indexOfKey(srcModule);
if (index < 0) {
ALOGW("createAudioPatch() bad src hw module %d", srcModule);
status = BAD_VALUE;
goto exit;
}
// limit to connections between devices and output streams
for (unsigned int i = 0; i < patch->num_sinks; i++) {
if (patch->sinks[i].type != AUDIO_PORT_TYPE_DEVICE) {
ALOGW("createAudioPatch() invalid sink type %d for mix source",
patch->sinks[i].type);
status = BAD_VALUE;
goto exit;
}
// limit to connections between sinks and sources on same HW module
if (patch->sinks[i].ext.device.hw_module != srcModule) {
status = BAD_VALUE;
goto exit;
}
}
AudioHwDevice *audioHwDevice = audioflinger->mAudioHwDevs.valueAt(index);
sp<ThreadBase> thread =
audioflinger->checkPlaybackThread_l(patch->sources[0].ext.mix.handle);
if (thread == 0) {
ALOGW("createAudioPatch() bad playback I/O handle %d",
patch->sources[0].ext.mix.handle);
status = BAD_VALUE;
goto exit;
}
if (audioHwDevice->version() >= AUDIO_DEVICE_API_VERSION_3_0) {
status = thread->sendCreateAudioPatchConfigEvent(patch, &halHandle);
} else {
audio_devices_t type = AUDIO_DEVICE_NONE;
for (unsigned int i = 0; i < patch->num_sinks; i++) {
type |= patch->sinks[i].ext.device.type;
}
char *address;
if (strcmp(patch->sinks[0].ext.device.address, "") != 0) {
//FIXME: we only support address on first sink with HAL version < 3.0
address = audio_device_address_to_parameter(
patch->sinks[0].ext.device.type,
patch->sinks[0].ext.device.address);
} else {
address = (char *)calloc(1, 1);
}
AudioParameter param = AudioParameter(String8(address));
free(address);
param.addInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), (int)type);
status = thread->setParameters(param.toString());
}
} break;
default:
status = BAD_VALUE;
goto exit;
}
exit:
ALOGV("createAudioPatch() status %d", status);
if (status == NO_ERROR) {
*handle = audioflinger->nextUniqueId();
newPatch->mHandle = *handle;
newPatch->mHalHandle = halHandle;
mPatches.add(newPatch);
ALOGV("createAudioPatch() added new patch handle %d halHandle %d", *handle, halHandle);
} else {
clearPatchConnections(newPatch);
delete newPatch;
}
return status;
}
status_t AudioFlinger::PatchPanel::createPatchConnections(Patch *patch,
const struct audio_patch *audioPatch)
{
// create patch from source device to record thread input
struct audio_patch subPatch;
subPatch.num_sources = 1;
subPatch.sources[0] = audioPatch->sources[0];
subPatch.num_sinks = 1;
patch->mRecordThread->getAudioPortConfig(&subPatch.sinks[0]);
subPatch.sinks[0].ext.mix.usecase.source = AUDIO_SOURCE_MIC;
status_t status = createAudioPatch(&subPatch, &patch->mRecordPatchHandle);
if (status != NO_ERROR) {
patch->mRecordPatchHandle = AUDIO_PATCH_HANDLE_NONE;
return status;
}
// create patch from playback thread output to sink device
patch->mPlaybackThread->getAudioPortConfig(&subPatch.sources[0]);
subPatch.sinks[0] = audioPatch->sinks[0];
status = createAudioPatch(&subPatch, &patch->mPlaybackPatchHandle);
if (status != NO_ERROR) {
patch->mPlaybackPatchHandle = AUDIO_PATCH_HANDLE_NONE;
return status;
}
// use a pseudo LCM between input and output framecount
size_t playbackFrameCount = patch->mPlaybackThread->frameCount();
int playbackShift = __builtin_ctz(playbackFrameCount);
size_t recordFramecount = patch->mRecordThread->frameCount();
int shift = __builtin_ctz(recordFramecount);
if (playbackShift < shift) {
shift = playbackShift;
}
size_t frameCount = (playbackFrameCount * recordFramecount) >> shift;
ALOGV("createPatchConnections() playframeCount %d recordFramecount %d frameCount %d ",
playbackFrameCount, recordFramecount, frameCount);
// create a special record track to capture from record thread
uint32_t channelCount = patch->mPlaybackThread->channelCount();
audio_channel_mask_t inChannelMask = audio_channel_in_mask_from_count(channelCount);
audio_channel_mask_t outChannelMask = patch->mPlaybackThread->channelMask();
uint32_t sampleRate = patch->mPlaybackThread->sampleRate();
audio_format_t format = patch->mPlaybackThread->format();
patch->mPatchRecord = new RecordThread::PatchRecord(
patch->mRecordThread.get(),
sampleRate,
inChannelMask,
format,
frameCount,
NULL,
IAudioFlinger::TRACK_DEFAULT);
if (patch->mPatchRecord == 0) {
return NO_MEMORY;
}
status = patch->mPatchRecord->initCheck();
if (status != NO_ERROR) {
return status;
}
patch->mRecordThread->addPatchRecord(patch->mPatchRecord);
// create a special playback track to render to playback thread.
// this track is given the same buffer as the PatchRecord buffer
patch->mPatchTrack = new PlaybackThread::PatchTrack(
patch->mPlaybackThread.get(),
sampleRate,
outChannelMask,
format,
frameCount,
patch->mPatchRecord->buffer(),
IAudioFlinger::TRACK_DEFAULT);
if (patch->mPatchTrack == 0) {
return NO_MEMORY;
}
status = patch->mPatchTrack->initCheck();
if (status != NO_ERROR) {
return status;
}
patch->mPlaybackThread->addPatchTrack(patch->mPatchTrack);
// tie playback and record tracks together
patch->mPatchRecord->setPeerProxy(patch->mPatchTrack.get());
patch->mPatchTrack->setPeerProxy(patch->mPatchRecord.get());
// start capture and playback
patch->mPatchRecord->start(AudioSystem::SYNC_EVENT_NONE, 0);
patch->mPatchTrack->start();
return status;
}
void AudioFlinger::PatchPanel::clearPatchConnections(Patch *patch)
{
sp<AudioFlinger> audioflinger = mAudioFlinger.promote();
if (audioflinger == 0) {
return;
}
ALOGV("clearPatchConnections() patch->mRecordPatchHandle %d patch->mPlaybackPatchHandle %d",
patch->mRecordPatchHandle, patch->mPlaybackPatchHandle);
if (patch->mPatchRecord != 0) {
patch->mPatchRecord->stop();
}
if (patch->mPatchTrack != 0) {
patch->mPatchTrack->stop();
}
if (patch->mRecordPatchHandle != AUDIO_PATCH_HANDLE_NONE) {
releaseAudioPatch(patch->mRecordPatchHandle);
patch->mRecordPatchHandle = AUDIO_PATCH_HANDLE_NONE;
}
if (patch->mPlaybackPatchHandle != AUDIO_PATCH_HANDLE_NONE) {
releaseAudioPatch(patch->mPlaybackPatchHandle);
patch->mPlaybackPatchHandle = AUDIO_PATCH_HANDLE_NONE;
}
if (patch->mRecordThread != 0) {
if (patch->mPatchRecord != 0) {
patch->mRecordThread->deletePatchRecord(patch->mPatchRecord);
patch->mPatchRecord.clear();
}
audioflinger->closeInputInternal_l(patch->mRecordThread);
patch->mRecordThread.clear();
}
if (patch->mPlaybackThread != 0) {
if (patch->mPatchTrack != 0) {
patch->mPlaybackThread->deletePatchTrack(patch->mPatchTrack);
patch->mPatchTrack.clear();
}
// if num sources == 2 we are reusing an existing playback thread so we do not close it
if (patch->mAudioPatch.num_sources != 2) {
audioflinger->closeOutputInternal_l(patch->mPlaybackThread);
}
patch->mPlaybackThread.clear();
}
}
/* Disconnect a patch */
status_t AudioFlinger::PatchPanel::releaseAudioPatch(audio_patch_handle_t handle)
{
ALOGV("releaseAudioPatch handle %d", handle);
status_t status = NO_ERROR;
size_t index;
sp<AudioFlinger> audioflinger = mAudioFlinger.promote();
if (audioflinger == 0) {
return NO_INIT;
}
for (index = 0; index < mPatches.size(); index++) {
if (handle == mPatches[index]->mHandle) {
break;
}
}
if (index == mPatches.size()) {
return BAD_VALUE;
}
Patch *removedPatch = mPatches[index];
mPatches.removeAt(index);
struct audio_patch *patch = &removedPatch->mAudioPatch;
switch (patch->sources[0].type) {
case AUDIO_PORT_TYPE_DEVICE: {
audio_module_handle_t srcModule = patch->sources[0].ext.device.hw_module;
ssize_t index = audioflinger->mAudioHwDevs.indexOfKey(srcModule);
if (index < 0) {
ALOGW("releaseAudioPatch() bad src hw module %d", srcModule);
status = BAD_VALUE;
break;
}
if (patch->sinks[0].type == AUDIO_PORT_TYPE_DEVICE &&
patch->sinks[0].ext.device.hw_module != srcModule) {
clearPatchConnections(removedPatch);
break;
}
AudioHwDevice *audioHwDevice = audioflinger->mAudioHwDevs.valueAt(index);
if (audioHwDevice->version() >= AUDIO_DEVICE_API_VERSION_3_0) {
if (patch->sinks[0].type == AUDIO_PORT_TYPE_MIX) {
sp<ThreadBase> thread = audioflinger->checkRecordThread_l(
patch->sinks[0].ext.mix.handle);
if (thread == 0) {
ALOGW("releaseAudioPatch() bad capture I/O handle %d",
patch->sinks[0].ext.mix.handle);
status = BAD_VALUE;
break;
}
status = thread->sendReleaseAudioPatchConfigEvent(removedPatch->mHalHandle);
} else {
audio_hw_device_t *hwDevice = audioHwDevice->hwDevice();
status = hwDevice->release_audio_patch(hwDevice, removedPatch->mHalHandle);
}
} else {
sp<ThreadBase> thread = audioflinger->checkRecordThread_l(
patch->sinks[0].ext.mix.handle);
if (thread == 0) {
ALOGW("releaseAudioPatch() bad capture I/O handle %d",
patch->sinks[0].ext.mix.handle);
status = BAD_VALUE;
break;
}
AudioParameter param;
param.addInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), 0);
ALOGV("releaseAudioPatch() AUDIO_PORT_TYPE_DEVICE setParameters %s",
param.toString().string());
status = thread->setParameters(param.toString());
}
} break;
case AUDIO_PORT_TYPE_MIX: {
audio_module_handle_t srcModule = patch->sources[0].ext.mix.hw_module;
ssize_t index = audioflinger->mAudioHwDevs.indexOfKey(srcModule);
if (index < 0) {
ALOGW("releaseAudioPatch() bad src hw module %d", srcModule);
status = BAD_VALUE;
break;
}
sp<ThreadBase> thread =
audioflinger->checkPlaybackThread_l(patch->sources[0].ext.mix.handle);
if (thread == 0) {
ALOGW("releaseAudioPatch() bad playback I/O handle %d",
patch->sources[0].ext.mix.handle);
status = BAD_VALUE;
break;
}
AudioHwDevice *audioHwDevice = audioflinger->mAudioHwDevs.valueAt(index);
if (audioHwDevice->version() >= AUDIO_DEVICE_API_VERSION_3_0) {
status = thread->sendReleaseAudioPatchConfigEvent(removedPatch->mHalHandle);
} else {
AudioParameter param;
param.addInt(String8(AUDIO_PARAMETER_STREAM_ROUTING), 0);
status = thread->setParameters(param.toString());
}
} break;
default:
status = BAD_VALUE;
break;
}
delete removedPatch;
return status;
}
/* List connected audio ports and they attributes */
status_t AudioFlinger::PatchPanel::listAudioPatches(unsigned int *num_patches __unused,
struct audio_patch *patches __unused)
{
ALOGV("listAudioPatches");
return NO_ERROR;
}
/* Set audio port configuration */
status_t AudioFlinger::PatchPanel::setAudioPortConfig(const struct audio_port_config *config)
{
ALOGV("setAudioPortConfig");
status_t status = NO_ERROR;
sp<AudioFlinger> audioflinger = mAudioFlinger.promote();
if (audioflinger == 0) {
return NO_INIT;
}
audio_module_handle_t module;
if (config->type == AUDIO_PORT_TYPE_DEVICE) {
module = config->ext.device.hw_module;
} else {
module = config->ext.mix.hw_module;
}
ssize_t index = audioflinger->mAudioHwDevs.indexOfKey(module);
if (index < 0) {
ALOGW("setAudioPortConfig() bad hw module %d", module);
return BAD_VALUE;
}
AudioHwDevice *audioHwDevice = audioflinger->mAudioHwDevs.valueAt(index);
if (audioHwDevice->version() >= AUDIO_DEVICE_API_VERSION_3_0) {
audio_hw_device_t *hwDevice = audioHwDevice->hwDevice();
return hwDevice->set_audio_port_config(hwDevice, config);
} else {
return INVALID_OPERATION;
}
return NO_ERROR;
}
}; // namespace android