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_EQ_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 TestEQPathFromFD( SLObjectItf sl, const char* path 51 #ifdef ANDROID 52 , SLAint64 offset, SLAint64 size 53 #endif 54 ) 55 { 56 SLresult result; 57 SLEngineItf EngineItf; 58 59 /* Objects this application uses: one player and an ouput mix */ 60 SLObjectItf player, outputMix; 61 62 /* Source of audio data to play */ 63 SLDataSource audioSource; 64 #ifdef ANDROID 65 SLDataLocator_AndroidFD locatorFd; 66 #else 67 SLDataLocator_URI locatorUri; 68 #endif 69 SLDataFormat_MIME mime; 70 71 /* Data sinks for the audio player */ 72 SLDataSink audioSink; 73 SLDataLocator_OutputMix locator_outputmix; 74 75 /* Play and PrefetchStatus interfaces for the audio player */ 76 SLPlayItf playItf; 77 SLPrefetchStatusItf prefetchItf; 78 79 /* Effect interface for the output mix */ 80 SLEqualizerItf eqOutputItf; 81 82 SLboolean required[MAX_NUMBER_INTERFACES]; 83 SLInterfaceID iidArray[MAX_NUMBER_INTERFACES]; 84 85 /* Get the SL Engine Interface which is implicit */ 86 result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf); 87 ExitOnError(result); 88 89 /* Initialize arrays required[] and iidArray[] */ 90 for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) { 91 required[i] = SL_BOOLEAN_FALSE; 92 iidArray[i] = SL_IID_NULL; 93 } 94 95 /* ------------------------------------------------------ */ 96 /* Configuration of the output mix */ 97 98 /* Set arrays required[] and iidArray[] for SLEqualizerItf interface */ 99 required[0] = SL_BOOLEAN_TRUE; 100 iidArray[0] = SL_IID_EQUALIZER; 101 102 /* Create Output Mix object to be used by the player */ 103 result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 1, iidArray, required); 104 ExitOnError(result); 105 106 /* Realize the Output Mix object in synchronous mode */ 107 result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE); 108 ExitOnError(result); 109 110 /* Get the SLEqualizerItf interface */ 111 result = (*outputMix)->GetInterface(outputMix, SL_IID_EQUALIZER, (void*)&eqOutputItf); 112 113 /* Setup the data sink structure */ 114 locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX; 115 locator_outputmix.outputMix = outputMix; 116 audioSink.pLocator = (void*)&locator_outputmix; 117 audioSink.pFormat = NULL; 118 119 /* ------------------------------------------------------ */ 120 /* Configuration of the player */ 121 122 /* Set arrays required[] and iidArray[] for SLPrefetchStatusItf interfaces */ 123 /* (SLPlayItf is implicit) */ 124 required[0] = SL_BOOLEAN_TRUE; 125 iidArray[0] = SL_IID_PREFETCHSTATUS; 126 127 /* Setup the data source structure for the URI */ 128 #ifdef ANDROID 129 locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD; 130 int fd = open(path, O_RDONLY); 131 if (fd == -1) { 132 ExitOnError(SL_RESULT_RESOURCE_ERROR); 133 } 134 locatorFd.fd = (SLint32) fd; 135 locatorFd.length = size; 136 locatorFd.offset = offset; 137 #else 138 locatorUri.locatorType = SL_DATALOCATOR_URI; 139 locatorUri.URI = (SLchar *) path; 140 #endif 141 142 mime.formatType = SL_DATAFORMAT_MIME; 143 /* this is how ignored mime information is specified, according to OpenSL ES spec 144 * in 9.1.6 SLDataFormat_MIME and 8.23 SLMetadataTraversalItf GetChildInfo */ 145 mime.mimeType = (SLchar*)NULL; 146 mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED; 147 148 audioSource.pFormat = (void*)&mime; 149 #ifdef ANDROID 150 audioSource.pLocator = (void*)&locatorFd; 151 #else 152 audioSource.pLocator = (void*)&locatorUri; 153 #endif 154 155 /* Create the audio player */ 156 result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 1, 157 iidArray, required); 158 ExitOnError(result); 159 160 /* Realize the player in synchronous mode. */ 161 result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result); 162 fprintf(stdout, "URI example: after Realize\n"); 163 164 /* Get the SLPlayItf, SLPrefetchStatusItf and SLAndroidStreamTypeItf interfaces for the player*/ 165 result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf); 166 ExitOnError(result); 167 168 result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf); 169 ExitOnError(result); 170 171 fprintf(stdout, "Player configured\n"); 172 173 /* ------------------------------------------------------ */ 174 /* Playback and test */ 175 176 /* Start the data prefetching by setting the player to the paused state */ 177 result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED ); 178 ExitOnError(result); 179 180 /* Wait until there's data to play */ 181 SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW; 182 while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) { 183 usleep(100 * 1000); 184 (*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus); 185 ExitOnError(result); 186 } 187 188 /* Get duration */ 189 SLmillisecond durationInMsec = SL_TIME_UNKNOWN; 190 result = (*playItf)->GetDuration(playItf, &durationInMsec); 191 ExitOnError(result); 192 if (durationInMsec == SL_TIME_UNKNOWN) { 193 durationInMsec = 5000; 194 } 195 196 /* Start playback */ 197 fprintf(stdout, "Starting to play\n"); 198 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING ); 199 ExitOnError(result); 200 201 /* Configure EQ */ 202 SLuint16 nbPresets, preset, nbBands = 0; 203 result = (*eqOutputItf)->GetNumberOfBands(eqOutputItf, &nbBands); 204 ExitOnError(result); 205 result = (*eqOutputItf)->GetNumberOfPresets(eqOutputItf, &nbPresets); 206 ExitOnError(result); 207 /* Start from a preset */ 208 preset = nbPresets > 2 ? 2 : 0; 209 result = (*eqOutputItf)->UsePreset(eqOutputItf, preset); 210 211 preset = 1977; 212 result = (*eqOutputItf)->GetCurrentPreset(eqOutputItf, &preset); 213 ExitOnError(result); 214 if (SL_EQUALIZER_UNDEFINED == preset) { 215 fprintf(stderr, "Using SL_EQUALIZER_UNDEFINED preset, unexpected here!\n"); 216 } else { 217 fprintf(stdout, "Using preset %d\n", preset); 218 } 219 220 /* Tweak it so it's obvious it gets turned on/off later */ 221 SLmillibel minLevel, maxLevel = 0; 222 result = (*eqOutputItf)->GetBandLevelRange(eqOutputItf, &minLevel, &maxLevel); 223 ExitOnError(result); 224 fprintf(stdout, "Band level range = %dmB to %dmB\n", minLevel, maxLevel); 225 226 SLuint16 b = 0; 227 for(b = 0 ; b < nbBands/2 ; b++) { 228 result = (*eqOutputItf)->SetBandLevel(eqOutputItf, b, minLevel); 229 ExitOnError(result); 230 } 231 for(b = nbBands/2 ; b < nbBands ; b++) { 232 result = (*eqOutputItf)->SetBandLevel(eqOutputItf, b, maxLevel); 233 ExitOnError(result); 234 } 235 236 SLmillibel level = 0; 237 for(b = 0 ; b < nbBands ; b++) { 238 result = (*eqOutputItf)->GetBandLevel(eqOutputItf, b, &level); 239 ExitOnError(result); 240 fprintf(stdout, "Band %d level = %dmB\n", b, level); 241 } 242 243 /* Switch EQ on/off every TIME_S_BETWEEN_EQ_ON_OFF seconds */ 244 SLboolean enabled = SL_BOOLEAN_TRUE; 245 result = (*eqOutputItf)->SetEnabled(eqOutputItf, enabled); 246 ExitOnError(result); 247 for(unsigned int j=0 ; j<(durationInMsec/(1000*TIME_S_BETWEEN_EQ_ON_OFF)) ; j++) { 248 usleep(TIME_S_BETWEEN_EQ_ON_OFF * 1000 * 1000); 249 result = (*eqOutputItf)->IsEnabled(eqOutputItf, &enabled); 250 ExitOnError(result); 251 enabled = enabled == SL_BOOLEAN_TRUE ? SL_BOOLEAN_FALSE : SL_BOOLEAN_TRUE; 252 result = (*eqOutputItf)->SetEnabled(eqOutputItf, enabled); 253 if (SL_BOOLEAN_TRUE == enabled) { 254 fprintf(stdout, "EQ on\n"); 255 } else { 256 fprintf(stdout, "EQ off\n"); 257 } 258 ExitOnError(result); 259 } 260 261 /* Make sure player is stopped */ 262 fprintf(stdout, "Stopping playback\n"); 263 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED); 264 ExitOnError(result); 265 266 /* Destroy the player */ 267 (*player)->Destroy(player); 268 269 /* Destroy Output Mix object */ 270 (*outputMix)->Destroy(outputMix); 271 272 #ifdef ANDROID 273 close(fd); 274 #endif 275 } 276 277 //----------------------------------------------------------------- 278 int main(int argc, char* const argv[]) 279 { 280 SLresult result; 281 SLObjectItf sl; 282 283 fprintf(stdout, "OpenSL ES test %s: exercises SLEqualizerItf ", argv[0]); 284 fprintf(stdout, "on an OutputMix object\n"); 285 fprintf(stdout, "Plays the sound file designated by the given path, "); 286 fprintf(stdout, "starting at the specified offset, and using the specified length.\n"); 287 fprintf(stdout, "Omit the length of the file for it to be computed by the system.\n"); 288 fprintf(stdout, "Every %d seconds, the EQ will be turned on and off.\n", 289 TIME_S_BETWEEN_EQ_ON_OFF); 290 291 #ifdef ANDROID 292 if (argc < 3) { 293 fprintf(stdout, "Usage: \t%s path offsetInBytes [sizeInBytes]\n", argv[0]); 294 fprintf(stdout, "Example: \"%s /sdcard/my.mp3 0 344460\" \n", argv[0]); 295 exit(EXIT_FAILURE); 296 } 297 #endif 298 299 SLEngineOption EngineOption[] = { 300 {(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE} 301 }; 302 303 result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL); 304 ExitOnError(result); 305 306 /* Realizing the SL Engine in synchronous mode. */ 307 result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE); 308 ExitOnError(result); 309 310 #ifdef ANDROID 311 if (argc == 3) { 312 fprintf(stdout, "\nno file size given, using SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE\n\n"); 313 TestEQPathFromFD(sl, argv[1], (SLAint64)atoi(argv[2]), 314 SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE); 315 } else { 316 TestEQPathFromFD(sl, argv[1], (SLAint64)atoi(argv[2]), (SLAint64)atoi(argv[3])); 317 } 318 #else 319 TestEQPathFromFD(sl, argv[1]); 320 #endif 321 322 /* Shutdown OpenSL ES */ 323 (*sl)->Destroy(sl); 324 325 return EXIT_SUCCESS; 326 } 327
