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