| /* |
| * 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 |