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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::ConfigParsingUtils"
//#define LOG_NDEBUG 0
#include "AudioPolicyManager.h"
namespace android {
//static
uint32_t ConfigParsingUtils::stringToEnum(const struct StringToEnum *table,
size_t size,
const char *name)
{
for (size_t i = 0; i < size; i++) {
if (strcmp(table[i].name, name) == 0) {
ALOGV("stringToEnum() found %s", table[i].name);
return table[i].value;
}
}
return 0;
}
//static
const char *ConfigParsingUtils::enumToString(const struct StringToEnum *table,
size_t size,
uint32_t value)
{
for (size_t i = 0; i < size; i++) {
if (table[i].value == value) {
return table[i].name;
}
}
return "";
}
//static
bool ConfigParsingUtils::stringToBool(const char *value)
{
return ((strcasecmp("true", value) == 0) || (strcmp("1", value) == 0));
}
// --- audio_policy.conf file parsing
//static
uint32_t ConfigParsingUtils::parseOutputFlagNames(char *name)
{
uint32_t flag = 0;
// it is OK to cast name to non const here as we are not going to use it after
// strtok() modifies it
char *flagName = strtok(name, "|");
while (flagName != NULL) {
if (strlen(flagName) != 0) {
flag |= ConfigParsingUtils::stringToEnum(sOutputFlagNameToEnumTable,
ARRAY_SIZE(sOutputFlagNameToEnumTable),
flagName);
}
flagName = strtok(NULL, "|");
}
//force direct flag if offload flag is set: offloading implies a direct output stream
// and all common behaviors are driven by checking only the direct flag
// this should normally be set appropriately in the policy configuration file
if ((flag & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0) {
flag |= AUDIO_OUTPUT_FLAG_DIRECT;
}
return flag;
}
//static
uint32_t ConfigParsingUtils::parseInputFlagNames(char *name)
{
uint32_t flag = 0;
// it is OK to cast name to non const here as we are not going to use it after
// strtok() modifies it
char *flagName = strtok(name, "|");
while (flagName != NULL) {
if (strlen(flagName) != 0) {
flag |= stringToEnum(sInputFlagNameToEnumTable,
ARRAY_SIZE(sInputFlagNameToEnumTable),
flagName);
}
flagName = strtok(NULL, "|");
}
return flag;
}
//static
audio_devices_t ConfigParsingUtils::parseDeviceNames(char *name)
{
uint32_t device = 0;
char *devName = strtok(name, "|");
while (devName != NULL) {
if (strlen(devName) != 0) {
device |= stringToEnum(sDeviceNameToEnumTable,
ARRAY_SIZE(sDeviceNameToEnumTable),
devName);
}
devName = strtok(NULL, "|");
}
return device;
}
}; // namespace android
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