1/* 2 * Copyright (C) 2006-2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "AudioParameter" 18//#define LOG_NDEBUG 0 19 20#include <utils/Log.h> 21 22#include <media/AudioParameter.h> 23#include <system/audio.h> 24 25namespace android { 26 27// static 28const char * const AudioParameter::keyRouting = AUDIO_PARAMETER_STREAM_ROUTING; 29const char * const AudioParameter::keySamplingRate = AUDIO_PARAMETER_STREAM_SAMPLING_RATE; 30const char * const AudioParameter::keyFormat = AUDIO_PARAMETER_STREAM_FORMAT; 31const char * const AudioParameter::keyChannels = AUDIO_PARAMETER_STREAM_CHANNELS; 32const char * const AudioParameter::keyFrameCount = AUDIO_PARAMETER_STREAM_FRAME_COUNT; 33const char * const AudioParameter::keyInputSource = AUDIO_PARAMETER_STREAM_INPUT_SOURCE; 34const char * const AudioParameter::keyScreenState = AUDIO_PARAMETER_KEY_SCREEN_STATE; 35const char * const AudioParameter::keyBtNrec = AUDIO_PARAMETER_KEY_BT_NREC; 36const char * const AudioParameter::keyHwAvSync = AUDIO_PARAMETER_HW_AV_SYNC; 37const char * const AudioParameter::keyMonoOutput = AUDIO_PARAMETER_MONO_OUTPUT; 38const char * const AudioParameter::keyStreamHwAvSync = AUDIO_PARAMETER_STREAM_HW_AV_SYNC; 39const char * const AudioParameter::keyStreamConnect = AUDIO_PARAMETER_DEVICE_CONNECT; 40const char * const AudioParameter::keyStreamDisconnect = AUDIO_PARAMETER_DEVICE_DISCONNECT; 41const char * const AudioParameter::keyStreamSupportedFormats = AUDIO_PARAMETER_STREAM_SUP_FORMATS; 42const char * const AudioParameter::keyStreamSupportedChannels = AUDIO_PARAMETER_STREAM_SUP_CHANNELS; 43const char * const AudioParameter::keyStreamSupportedSamplingRates = 44 AUDIO_PARAMETER_STREAM_SUP_SAMPLING_RATES; 45const char * const AudioParameter::valueOn = AUDIO_PARAMETER_VALUE_ON; 46const char * const AudioParameter::valueOff = AUDIO_PARAMETER_VALUE_OFF; 47const char * const AudioParameter::valueListSeparator = AUDIO_PARAMETER_VALUE_LIST_SEPARATOR; 48 49AudioParameter::AudioParameter(const String8& keyValuePairs) 50{ 51 char *str = new char[keyValuePairs.length()+1]; 52 mKeyValuePairs = keyValuePairs; 53 char *last; 54 55 strcpy(str, keyValuePairs.string()); 56 char *pair = strtok_r(str, ";", &last); 57 while (pair != NULL) { 58 if (strlen(pair) != 0) { 59 size_t eqIdx = strcspn(pair, "="); 60 String8 key = String8(pair, eqIdx); 61 String8 value; 62 if (eqIdx == strlen(pair)) { 63 value = String8(""); 64 } else { 65 value = String8(pair + eqIdx + 1); 66 } 67 if (mParameters.indexOfKey(key) < 0) { 68 mParameters.add(key, value); 69 } else { 70 mParameters.replaceValueFor(key, value); 71 } 72 } else { 73 ALOGV("AudioParameter() cstor empty key value pair"); 74 } 75 pair = strtok_r(NULL, ";", &last); 76 } 77 78 delete[] str; 79} 80 81AudioParameter::~AudioParameter() 82{ 83 mParameters.clear(); 84} 85 86String8 AudioParameter::toStringImpl(bool useValues) const 87{ 88 String8 str = String8(""); 89 90 size_t size = mParameters.size(); 91 for (size_t i = 0; i < size; i++) { 92 str += mParameters.keyAt(i); 93 if (useValues) { 94 str += "="; 95 str += mParameters.valueAt(i); 96 } 97 if (i < (size - 1)) str += ";"; 98 } 99 return str; 100} 101 102status_t AudioParameter::add(const String8& key, const String8& value) 103{ 104 if (mParameters.indexOfKey(key) < 0) { 105 mParameters.add(key, value); 106 return NO_ERROR; 107 } else { 108 mParameters.replaceValueFor(key, value); 109 return ALREADY_EXISTS; 110 } 111} 112 113status_t AudioParameter::addKey(const String8& key) 114{ 115 return add(key, String8()); 116} 117 118status_t AudioParameter::addInt(const String8& key, const int value) 119{ 120 char str[12]; 121 if (snprintf(str, 12, "%d", value) > 0) { 122 String8 str8 = String8(str); 123 return add(key, str8); 124 } else { 125 return BAD_VALUE; 126 } 127} 128 129status_t AudioParameter::addFloat(const String8& key, const float value) 130{ 131 char str[23]; 132 if (snprintf(str, 23, "%.10f", value) > 0) { 133 String8 str8 = String8(str); 134 return add(key, str8); 135 } else { 136 return BAD_VALUE; 137 } 138} 139 140status_t AudioParameter::remove(const String8& key) 141{ 142 if (mParameters.indexOfKey(key) >= 0) { 143 mParameters.removeItem(key); 144 return NO_ERROR; 145 } else { 146 return BAD_VALUE; 147 } 148} 149 150status_t AudioParameter::get(const String8& key, String8& value) const 151{ 152 if (mParameters.indexOfKey(key) >= 0) { 153 value = mParameters.valueFor(key); 154 return NO_ERROR; 155 } else { 156 return BAD_VALUE; 157 } 158} 159 160status_t AudioParameter::getInt(const String8& key, int& value) const 161{ 162 String8 str8; 163 status_t result = get(key, str8); 164 value = 0; 165 if (result == NO_ERROR) { 166 int val; 167 if (sscanf(str8.string(), "%d", &val) == 1) { 168 value = val; 169 } else { 170 result = INVALID_OPERATION; 171 } 172 } 173 return result; 174} 175 176status_t AudioParameter::getFloat(const String8& key, float& value) const 177{ 178 String8 str8; 179 status_t result = get(key, str8); 180 value = 0; 181 if (result == NO_ERROR) { 182 float val; 183 if (sscanf(str8.string(), "%f", &val) == 1) { 184 value = val; 185 } else { 186 result = INVALID_OPERATION; 187 } 188 } 189 return result; 190} 191 192status_t AudioParameter::getAt(size_t index, String8& key) const 193{ 194 if (mParameters.size() > index) { 195 key = mParameters.keyAt(index); 196 return NO_ERROR; 197 } else { 198 return BAD_VALUE; 199 } 200} 201 202status_t AudioParameter::getAt(size_t index, String8& key, String8& value) const 203{ 204 if (mParameters.size() > index) { 205 key = mParameters.keyAt(index); 206 value = mParameters.valueAt(index); 207 return NO_ERROR; 208 } else { 209 return BAD_VALUE; 210 } 211} 212 213} // namespace android 214