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132 lines
3.4 KiB
132 lines
3.4 KiB
/* ALSAControl.cpp
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**
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** Copyright 2008-2009 Wind River Systems
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** Copyright (c) 2011-2012, Code Aurora Forum. All rights reserved.
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**
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** Licensed under the Apache License, Version 2.0 (the "License");
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** you may not use this file except in compliance with the License.
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** You may obtain a copy of the License at
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**
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** http://www.apache.org/licenses/LICENSE-2.0
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**
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** Unless required by applicable law or agreed to in writing, software
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** distributed under the License is distributed on an "AS IS" BASIS,
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** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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** See the License for the specific language governing permissions and
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** limitations under the License.
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*/
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#include <errno.h>
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#include <stdarg.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <dlfcn.h>
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#define LOG_TAG "ALSAControl"
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//#define LOG_NDEBUG 0
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#define LOG_NDDEBUG 0
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#include <utils/Log.h>
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#include <utils/String8.h>
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#include <cutils/properties.h>
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#include <media/AudioRecord.h>
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#include <hardware_legacy/power.h>
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#include "AudioHardwareALSA.h"
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namespace android_audio_legacy
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{
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ALSAControl::ALSAControl(const char *device)
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{
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ALOGD("ALSAControl: ctor device %s", device);
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mHandle = mixer_open(device);
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ALOGV("ALSAControl: ctor mixer %p", mHandle);
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}
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ALSAControl::~ALSAControl()
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{
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if (mHandle) mixer_close(mHandle);
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}
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status_t ALSAControl::get(const char *name, unsigned int &value, int index)
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{
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struct mixer_ctl *ctl;
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if (!mHandle) {
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ALOGE("Control not initialized");
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return NO_INIT;
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}
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ctl = mixer_get_control(mHandle, name, index);
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if (!ctl)
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return BAD_VALUE;
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mixer_ctl_get(ctl, &value);
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return NO_ERROR;
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}
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status_t ALSAControl::set(const char *name, unsigned int value, int index)
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{
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struct mixer_ctl *ctl;
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int ret = 0;
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ALOGD("set:: name %s value %d index %d", name, value, index);
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if (!mHandle) {
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ALOGE("Control not initialized");
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return NO_INIT;
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}
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// ToDo: Do we need to send index here? Right now it works with 0
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ctl = mixer_get_control(mHandle, name, 0);
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if(ctl == NULL) {
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ALOGE("Could not get the mixer control");
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return BAD_VALUE;
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}
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ret = mixer_ctl_set(ctl, value);
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return (ret < 0) ? BAD_VALUE : NO_ERROR;
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}
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status_t ALSAControl::set(const char *name, const char *value)
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{
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struct mixer_ctl *ctl;
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int ret = 0;
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ALOGD("set:: name %s value %s", name, value);
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if (!mHandle) {
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ALOGE("Control not initialized");
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return NO_INIT;
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}
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ctl = mixer_get_control(mHandle, name, 0);
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if(ctl == NULL) {
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ALOGE("Could not get the mixer control");
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return BAD_VALUE;
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}
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ret = mixer_ctl_select(ctl, value);
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return (ret < 0) ? BAD_VALUE : NO_ERROR;
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}
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status_t ALSAControl::setext(const char *name, int count, char **setValues)
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{
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struct mixer_ctl *ctl;
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int ret = 0;
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ALOGD("setext:: name %s count %d", name, count);
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if (!mHandle) {
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ALOGE("Control not initialized");
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return NO_INIT;
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}
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// ToDo: Do we need to send index here? Right now it works with 0
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ctl = mixer_get_control(mHandle, name, 0);
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if(ctl == NULL) {
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ALOGE("Could not get the mixer control");
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return BAD_VALUE;
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}
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ret = mixer_ctl_set_value(ctl, count, setValues);
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return (ret < 0) ? BAD_VALUE : NO_ERROR;
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}
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}; // namespace android
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