You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
131 lines
3.4 KiB
131 lines
3.4 KiB
/* ALSAControl.cpp |
|
** |
|
** Copyright 2008-2009 Wind River Systems |
|
** Copyright (c) 2011-2012, 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> |
|
|
|
#define LOG_TAG "ALSAControl" |
|
//#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" |
|
|
|
namespace android_audio_legacy |
|
{ |
|
|
|
ALSAControl::ALSAControl(const char *device) |
|
{ |
|
ALOGD("ALSAControl: ctor device %s", device); |
|
mHandle = mixer_open(device); |
|
ALOGV("ALSAControl: ctor mixer %p", mHandle); |
|
} |
|
|
|
ALSAControl::~ALSAControl() |
|
{ |
|
if (mHandle) mixer_close(mHandle); |
|
} |
|
|
|
status_t ALSAControl::get(const char *name, unsigned int &value, int index) |
|
{ |
|
struct mixer_ctl *ctl; |
|
|
|
if (!mHandle) { |
|
ALOGE("Control not initialized"); |
|
return NO_INIT; |
|
} |
|
|
|
ctl = mixer_get_control(mHandle, name, index); |
|
if (!ctl) |
|
return BAD_VALUE; |
|
|
|
mixer_ctl_get(ctl, &value); |
|
return NO_ERROR; |
|
} |
|
|
|
status_t ALSAControl::set(const char *name, unsigned int value, int index) |
|
{ |
|
struct mixer_ctl *ctl; |
|
int ret = 0; |
|
ALOGD("set:: name %s value %d index %d", name, value, index); |
|
if (!mHandle) { |
|
ALOGE("Control not initialized"); |
|
return NO_INIT; |
|
} |
|
|
|
// ToDo: Do we need to send index here? Right now it works with 0 |
|
ctl = mixer_get_control(mHandle, name, 0); |
|
if(ctl == NULL) { |
|
ALOGE("Could not get the mixer control"); |
|
return BAD_VALUE; |
|
} |
|
ret = mixer_ctl_set(ctl, value); |
|
return (ret < 0) ? BAD_VALUE : NO_ERROR; |
|
} |
|
|
|
status_t ALSAControl::set(const char *name, const char *value) |
|
{ |
|
struct mixer_ctl *ctl; |
|
int ret = 0; |
|
ALOGD("set:: name %s value %s", name, value); |
|
|
|
if (!mHandle) { |
|
ALOGE("Control not initialized"); |
|
return NO_INIT; |
|
} |
|
|
|
ctl = mixer_get_control(mHandle, name, 0); |
|
if(ctl == NULL) { |
|
ALOGE("Could not get the mixer control"); |
|
return BAD_VALUE; |
|
} |
|
ret = mixer_ctl_select(ctl, value); |
|
return (ret < 0) ? BAD_VALUE : NO_ERROR; |
|
} |
|
|
|
status_t ALSAControl::setext(const char *name, int count, char **setValues) |
|
{ |
|
struct mixer_ctl *ctl; |
|
int ret = 0; |
|
ALOGD("setext:: name %s count %d", name, count); |
|
if (!mHandle) { |
|
ALOGE("Control not initialized"); |
|
return NO_INIT; |
|
} |
|
|
|
// ToDo: Do we need to send index here? Right now it works with 0 |
|
ctl = mixer_get_control(mHandle, name, 0); |
|
if(ctl == NULL) { |
|
ALOGE("Could not get the mixer control"); |
|
return BAD_VALUE; |
|
} |
|
ret = mixer_ctl_set_value(ctl, count, setValues); |
|
return (ret < 0) ? BAD_VALUE : NO_ERROR; |
|
} |
|
|
|
}; // namespace android
|
|
|