1 /* 2 * Copyright (C) 2010 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 #include <stdlib.h> 18 #include <stdio.h> 19 #include <string.h> 20 #include <unistd.h> 21 #include <sys/time.h> 22 #include <fcntl.h> 23 24 #include <SLES/OpenSLES.h> 25 #ifdef ANDROID 26 #include <SLES/OpenSLES_Android.h> 27 #endif 28 29 30 #define MAX_NUMBER_INTERFACES 3 31 32 #define TIME_S_BETWEEN_VIRT_ON_OFF 3 33 34 //----------------------------------------------------------------- 35 /* Exits the application if an error is encountered */ 36 #define ExitOnError(x) ExitOnErrorFunc(x,__LINE__) 37 38 void ExitOnErrorFunc( SLresult result , int line) 39 { 40 if (SL_RESULT_SUCCESS != result) { 41 fprintf(stderr, "%u error code encountered at line %d, exiting\n", result, line); 42 exit(EXIT_FAILURE); 43 } 44 } 45 46 47 //----------------------------------------------------------------- 48 49 /* Play an audio path by opening a file descriptor on that path */ 50 void TestVirtualizerPathFromFD( SLObjectItf sl, const char* path, int16_t virtStrength, 51 bool alwaysOn) 52 { 53 SLresult result; 54 SLEngineItf EngineItf; 55 56 /* Objects this application uses: one player and an ouput mix */ 57 SLObjectItf player, outputMix; 58 59 /* Source of audio data to play */ 60 SLDataSource audioSource; 61 #ifdef ANDROID 62 SLDataLocator_AndroidFD locatorFd; 63 #else 64 SLDataLocator_URI locatorUri; 65 #endif 66 SLDataFormat_MIME mime; 67 68 /* Data sinks for the audio player */ 69 SLDataSink audioSink; 70 SLDataLocator_OutputMix locator_outputmix; 71 72 /* Play and PrefetchStatus interfaces for the audio player */ 73 SLPlayItf playItf; 74 SLPrefetchStatusItf prefetchItf; 75 SLVirtualizerItf virtItf; 76 77 SLboolean required[MAX_NUMBER_INTERFACES]; 78 SLInterfaceID iidArray[MAX_NUMBER_INTERFACES]; 79 80 /* Get the SL Engine Interface which is implicit */ 81 result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf); 82 ExitOnError(result); 83 84 /* Initialize arrays required[] and iidArray[] */ 85 for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) { 86 required[i] = SL_BOOLEAN_FALSE; 87 iidArray[i] = SL_IID_NULL; 88 } 89 90 /* ------------------------------------------------------ */ 91 /* Configuration of the output mix */ 92 93 /* Create Output Mix object to be used by the player */ 94 result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 0, iidArray, required); 95 ExitOnError(result); 96 97 /* Realize the Output Mix object in synchronous mode */ 98 result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE); 99 ExitOnError(result); 100 101 /* Setup the data sink structure */ 102 locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX; 103 locator_outputmix.outputMix = outputMix; 104 audioSink.pLocator = (void*)&locator_outputmix; 105 audioSink.pFormat = NULL; 106 107 /* ------------------------------------------------------ */ 108 /* Configuration of the player */ 109 110 /* Set arrays required[] and iidArray[] for SLPrefetchStatusItf interfaces */ 111 /* (SLPlayItf is implicit) */ 112 required[0] = SL_BOOLEAN_TRUE; 113 iidArray[0] = SL_IID_PREFETCHSTATUS; 114 required[1] = SL_BOOLEAN_TRUE; 115 iidArray[1] = SL_IID_VIRTUALIZER; 116 117 #ifdef ANDROID 118 /* Setup the data source structure for the URI */ 119 locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD; 120 int fd = open(path, O_RDONLY); 121 if (fd == -1) { 122 ExitOnError(SL_RESULT_RESOURCE_ERROR); 123 } 124 locatorFd.fd = (SLint32) fd; 125 locatorFd.length = SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE; 126 locatorFd.offset = 0; 127 #else 128 locatorUri.locatorType = SL_DATALOCATOR_URI; 129 locatorUri.URI = (SLchar *) path; 130 #endif 131 132 mime.formatType = SL_DATAFORMAT_MIME; 133 /* this is how ignored mime information is specified, according to OpenSL ES spec 134 * in 9.1.6 SLDataFormat_MIME and 8.23 SLMetadataTraversalItf GetChildInfo */ 135 mime.mimeType = (SLchar*)NULL; 136 mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED; 137 138 audioSource.pFormat = (void*)&mime; 139 #ifdef ANDROID 140 audioSource.pLocator = (void*)&locatorFd; 141 #else 142 audioSource.pLocator = (void*)&locatorUri; 143 #endif 144 145 /* Create the audio player */ 146 result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 2, 147 iidArray, required); 148 ExitOnError(result); 149 150 /* Realize the player in synchronous mode. */ 151 result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result); 152 fprintf(stdout, "URI example: after Realize\n"); 153 154 /* Get the SLPlayItf, SLPrefetchStatusItf and SLAndroidStreamTypeItf interfaces for the player*/ 155 result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf); 156 ExitOnError(result); 157 158 result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf); 159 ExitOnError(result); 160 161 result = (*player)->GetInterface(player, SL_IID_VIRTUALIZER, (void*)&virtItf); 162 ExitOnError(result); 163 164 fprintf(stdout, "Player configured\n"); 165 166 /* ------------------------------------------------------ */ 167 /* Playback and test */ 168 169 /* Start the data prefetching by setting the player to the paused state */ 170 result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED ); 171 ExitOnError(result); 172 173 /* Wait until there's data to play */ 174 SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW; 175 while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) { 176 usleep(100 * 1000); 177 (*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus); 178 ExitOnError(result); 179 } 180 181 /* Get duration */ 182 SLmillisecond durationInMsec = SL_TIME_UNKNOWN; 183 result = (*playItf)->GetDuration(playItf, &durationInMsec); 184 ExitOnError(result); 185 if (durationInMsec == SL_TIME_UNKNOWN) { 186 durationInMsec = 5000; 187 } 188 189 /* Start playback */ 190 fprintf(stdout, "Starting to play\n"); 191 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING ); 192 ExitOnError(result); 193 194 /* Configure Virtualizer */ 195 SLboolean strengthSupported = SL_BOOLEAN_FALSE; 196 result = (*virtItf)->IsStrengthSupported(virtItf, &strengthSupported); 197 ExitOnError(result); 198 if (SL_BOOLEAN_FALSE == strengthSupported) { 199 fprintf(stdout, "Virtualizer strength is not supported on this platform. Too bad!\n"); 200 } else { 201 fprintf(stdout, "Virtualizer strength is supported, setting strength to %d\n", 202 virtStrength); 203 result = (*virtItf)->SetStrength(virtItf, virtStrength); 204 ExitOnError(result); 205 } 206 207 SLpermille strength = 0; 208 result = (*virtItf)->GetRoundedStrength(virtItf, &strength); 209 ExitOnError(result); 210 fprintf(stdout, "Rounded strength of virt = %d\n", strength); 211 212 213 /* Switch Virtualizer on/off every TIME_S_BETWEEN_VIRT_ON_OFF seconds unless always on */ 214 SLboolean previousEnabled = SL_BOOLEAN_FALSE; 215 for(unsigned int j=0 ; j<(durationInMsec/(1000*TIME_S_BETWEEN_VIRT_ON_OFF)) ; j++) { 216 SLboolean enabled; 217 result = (*virtItf)->IsEnabled(virtItf, &enabled); 218 ExitOnError(result); 219 enabled = alwaysOn || !enabled; 220 if (enabled != previousEnabled) { 221 result = (*virtItf)->SetEnabled(virtItf, enabled); 222 ExitOnError(result); 223 previousEnabled = enabled; 224 if (SL_BOOLEAN_TRUE == enabled) { 225 fprintf(stdout, "Virtualizer on\n"); 226 } else { 227 fprintf(stdout, "Virtualizer off\n"); 228 } 229 } 230 usleep(TIME_S_BETWEEN_VIRT_ON_OFF * 1000 * 1000); 231 } 232 233 /* Make sure player is stopped */ 234 fprintf(stdout, "Stopping playback\n"); 235 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED); 236 ExitOnError(result); 237 238 /* Destroy the player */ 239 (*player)->Destroy(player); 240 241 /* Destroy Output Mix object */ 242 (*outputMix)->Destroy(outputMix); 243 244 #ifdef ANDROID 245 close(fd); 246 #endif 247 } 248 249 //----------------------------------------------------------------- 250 int main(int argc, char* const argv[]) 251 { 252 const char *programName = argv[0]; 253 SLresult result; 254 SLObjectItf sl; 255 256 fprintf(stdout, "OpenSL ES test %s: exercises SLVirtualizerItf ", programName); 257 fprintf(stdout, "and AudioPlayer with SLDataLocator_AndroidFD source / OutputMix sink\n"); 258 fprintf(stdout, "Plays the sound file designated by the given path, "); 259 fprintf(stdout, "and applies a virtualization effect of the specified strength,\n"); 260 fprintf(stdout, "where strength is an integer value between 0 and 1000.\n"); 261 fprintf(stdout, "Every %d seconds, the Virtualizer will be turned on and off,\n", 262 TIME_S_BETWEEN_VIRT_ON_OFF); 263 fprintf(stdout, "unless the --always-on option is specified before the path.\n"); 264 265 bool alwaysOn = false; 266 if (argc >= 2 && !strcmp(argv[1], "--always-on")) { 267 alwaysOn = true; 268 --argc; 269 ++argv; 270 } 271 272 if (argc < 3) { 273 fprintf(stdout, "Usage: \t%s [--always-on] path virtualization_strength\n", programName); 274 fprintf(stdout, "Example: \"%s /sdcard/my.mp3 1000\" \n", programName); 275 exit(EXIT_FAILURE); 276 } 277 278 SLEngineOption EngineOption[] = { 279 {(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE} 280 }; 281 282 result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL); 283 ExitOnError(result); 284 285 /* Realizing the SL Engine in synchronous mode. */ 286 result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE); 287 ExitOnError(result); 288 289 // intentionally not checking that argv[2], the virtualizer strength, is between 0 and 1000 290 TestVirtualizerPathFromFD(sl, argv[1], (int16_t)atoi(argv[2]), alwaysOn); 291 292 /* Shutdown OpenSL ES */ 293 (*sl)->Destroy(sl); 294 295 return EXIT_SUCCESS; 296 } 297
