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/*
* Copyright (C) 2006-2011 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 "AudioParameter"
//#define LOG_NDEBUG 0
#include <utils/Log.h>
#include <hardware/audio.h>
#include <media/AudioParameter.h>
namespace android {
// static
const char * const AudioParameter::keyRouting = AUDIO_PARAMETER_STREAM_ROUTING;
const char * const AudioParameter::keySamplingRate = AUDIO_PARAMETER_STREAM_SAMPLING_RATE;
const char * const AudioParameter::keyFormat = AUDIO_PARAMETER_STREAM_FORMAT;
const char * const AudioParameter::keyChannels = AUDIO_PARAMETER_STREAM_CHANNELS;
const char * const AudioParameter::keyFrameCount = AUDIO_PARAMETER_STREAM_FRAME_COUNT;
const char * const AudioParameter::keyInputSource = AUDIO_PARAMETER_STREAM_INPUT_SOURCE;
const char * const AudioParameter::keyScreenState = AUDIO_PARAMETER_KEY_SCREEN_STATE;
AudioParameter::AudioParameter(const String8& keyValuePairs)
{
char *str = new char[keyValuePairs.length()+1];
mKeyValuePairs = keyValuePairs;
char *last;
strcpy(str, keyValuePairs.string());
char *pair = strtok_r(str, ";", &last);
while (pair != NULL) {
if (strlen(pair) != 0) {
size_t eqIdx = strcspn(pair, "=");
String8 key = String8(pair, eqIdx);
String8 value;
if (eqIdx == strlen(pair)) {
value = String8("");
} else {
value = String8(pair + eqIdx + 1);
}
if (mParameters.indexOfKey(key) < 0) {
mParameters.add(key, value);
} else {
mParameters.replaceValueFor(key, value);
}
} else {
ALOGV("AudioParameter() cstor empty key value pair");
}
pair = strtok_r(NULL, ";", &last);
}
delete[] str;
}
AudioParameter::~AudioParameter()
{
mParameters.clear();
}
String8 AudioParameter::toString()
{
String8 str = String8("");
size_t size = mParameters.size();
for (size_t i = 0; i < size; i++) {
str += mParameters.keyAt(i);
str += "=";
str += mParameters.valueAt(i);
if (i < (size - 1)) str += ";";
}
return str;
}
status_t AudioParameter::add(const String8& key, const String8& value)
{
if (mParameters.indexOfKey(key) < 0) {
mParameters.add(key, value);
return NO_ERROR;
} else {
mParameters.replaceValueFor(key, value);
return ALREADY_EXISTS;
}
}
status_t AudioParameter::addInt(const String8& key, const int value)
{
char str[12];
if (snprintf(str, 12, "%d", value) > 0) {
String8 str8 = String8(str);
return add(key, str8);
} else {
return BAD_VALUE;
}
}
status_t AudioParameter::addFloat(const String8& key, const float value)
{
char str[23];
if (snprintf(str, 23, "%.10f", value) > 0) {
String8 str8 = String8(str);
return add(key, str8);
} else {
return BAD_VALUE;
}
}
status_t AudioParameter::remove(const String8& key)
{
if (mParameters.indexOfKey(key) >= 0) {
mParameters.removeItem(key);
return NO_ERROR;
} else {
return BAD_VALUE;
}
}
status_t AudioParameter::get(const String8& key, String8& value)
{
if (mParameters.indexOfKey(key) >= 0) {
value = mParameters.valueFor(key);
return NO_ERROR;
} else {
return BAD_VALUE;
}
}
status_t AudioParameter::getInt(const String8& key, int& value)
{
String8 str8;
status_t result = get(key, str8);
value = 0;
if (result == NO_ERROR) {
int val;
if (sscanf(str8.string(), "%d", &val) == 1) {
value = val;
} else {
result = INVALID_OPERATION;
}
}
return result;
}
status_t AudioParameter::getFloat(const String8& key, float& value)
{
String8 str8;
status_t result = get(key, str8);
value = 0;
if (result == NO_ERROR) {
float val;
if (sscanf(str8.string(), "%f", &val) == 1) {
value = val;
} else {
result = INVALID_OPERATION;
}
}
return result;
}
status_t AudioParameter::getAt(size_t index, String8& key, String8& value)
{
if (mParameters.size() > index) {
key = mParameters.keyAt(index);
value = mParameters.valueAt(index);
return NO_ERROR;
} else {
return BAD_VALUE;
}
}
} // namespace android
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