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/*
* Copyright (C) 2015 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 "APM::AudioGain"
//#define LOG_NDEBUG 0
//#define VERY_VERBOSE_LOGGING
#ifdef VERY_VERBOSE_LOGGING
#define ALOGVV ALOGV
#else
#define ALOGVV(a...) do { } while(0)
#endif
#include "AudioGain.h"
#include "StreamDescriptor.h"
#include <utils/Log.h>
#include <utils/String8.h>
#include <math.h>
namespace android {
AudioGain::AudioGain(int index, bool useInChannelMask)
{
mIndex = index;
mUseInChannelMask = useInChannelMask;
memset(&mGain, 0, sizeof(struct audio_gain));
}
void AudioGain::getDefaultConfig(struct audio_gain_config *config)
{
config->index = mIndex;
config->mode = mGain.mode;
config->channel_mask = mGain.channel_mask;
if ((mGain.mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) {
config->values[0] = mGain.default_value;
} else {
uint32_t numValues;
if (mUseInChannelMask) {
numValues = audio_channel_count_from_in_mask(mGain.channel_mask);
} else {
numValues = audio_channel_count_from_out_mask(mGain.channel_mask);
}
for (size_t i = 0; i < numValues; i++) {
config->values[i] = mGain.default_value;
}
}
if ((mGain.mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) {
config->ramp_duration_ms = mGain.min_ramp_ms;
}
}
status_t AudioGain::checkConfig(const struct audio_gain_config *config)
{
if ((config->mode & ~mGain.mode) != 0) {
return BAD_VALUE;
}
if ((config->mode & AUDIO_GAIN_MODE_JOINT) == AUDIO_GAIN_MODE_JOINT) {
if ((config->values[0] < mGain.min_value) ||
(config->values[0] > mGain.max_value)) {
return BAD_VALUE;
}
} else {
if ((config->channel_mask & ~mGain.channel_mask) != 0) {
return BAD_VALUE;
}
uint32_t numValues;
if (mUseInChannelMask) {
numValues = audio_channel_count_from_in_mask(config->channel_mask);
} else {
numValues = audio_channel_count_from_out_mask(config->channel_mask);
}
for (size_t i = 0; i < numValues; i++) {
if ((config->values[i] < mGain.min_value) ||
(config->values[i] > mGain.max_value)) {
return BAD_VALUE;
}
}
}
if ((config->mode & AUDIO_GAIN_MODE_RAMP) == AUDIO_GAIN_MODE_RAMP) {
if ((config->ramp_duration_ms < mGain.min_ramp_ms) ||
(config->ramp_duration_ms > mGain.max_ramp_ms)) {
return BAD_VALUE;
}
}
return NO_ERROR;
}
void AudioGain::dump(int fd, int spaces, int index) const
{
const size_t SIZE = 256;
char buffer[SIZE];
String8 result;
snprintf(buffer, SIZE, "%*sGain %d:\n", spaces, "", index+1);
result.append(buffer);
snprintf(buffer, SIZE, "%*s- mode: %08x\n", spaces, "", mGain.mode);
result.append(buffer);
snprintf(buffer, SIZE, "%*s- channel_mask: %08x\n", spaces, "", mGain.channel_mask);
result.append(buffer);
snprintf(buffer, SIZE, "%*s- min_value: %d mB\n", spaces, "", mGain.min_value);
result.append(buffer);
snprintf(buffer, SIZE, "%*s- max_value: %d mB\n", spaces, "", mGain.max_value);
result.append(buffer);
snprintf(buffer, SIZE, "%*s- default_value: %d mB\n", spaces, "", mGain.default_value);
result.append(buffer);
snprintf(buffer, SIZE, "%*s- step_value: %d mB\n", spaces, "", mGain.step_value);
result.append(buffer);
snprintf(buffer, SIZE, "%*s- min_ramp_ms: %d ms\n", spaces, "", mGain.min_ramp_ms);
result.append(buffer);
snprintf(buffer, SIZE, "%*s- max_ramp_ms: %d ms\n", spaces, "", mGain.max_ramp_ms);
result.append(buffer);
write(fd, result.string(), result.size());
}
}; // namespace android
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