blob: 5b2cf31415fa61e7889dfb0d43e98259c191a3dc [file] [log] [blame]
/* ALSAControl.cpp
**
** Copyright 2008-2009 Wind River Systems
** Copyright (c) 2011-2012, The Linux Foundation. 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