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 #include <SLES/OpenSLES_Android.h> 26 27 28 #define MAX_NUMBER_INTERFACES 3 29 30 #define TEST_MUTE 0 31 #define TEST_SOLO 1 32 33 #define PREFETCHEVENT_ERROR_CANDIDATE \ 34 (SL_PREFETCHEVENT_STATUSCHANGE | SL_PREFETCHEVENT_FILLLEVELCHANGE) 35 36 //----------------------------------------------------------------- 37 /* Exits the application if an error is encountered */ 38 #define ExitOnError(x) ExitOnErrorFunc(x,__LINE__) 39 40 void ExitOnErrorFunc( SLresult result , int line) 41 { 42 if (SL_RESULT_SUCCESS != result) { 43 fprintf(stdout, "%u error code encountered at line %d, exiting\n", result, line); 44 exit(EXIT_FAILURE); 45 } 46 } 47 48 //----------------------------------------------------------------- 49 bool prefetchError = false; 50 51 /* Callback for "prefetch" events, here used to detect audio resource opening errors */ 52 void PrefetchEventCallback( SLPrefetchStatusItf caller, void *pContext __unused, SLuint32 event) 53 { 54 SLpermille level = 0; 55 SLresult result; 56 result = (*caller)->GetFillLevel(caller, &level); 57 ExitOnError(result); 58 SLuint32 status; 59 result = (*caller)->GetPrefetchStatus(caller, &status); 60 ExitOnError(result); 61 if ((PREFETCHEVENT_ERROR_CANDIDATE == (event & PREFETCHEVENT_ERROR_CANDIDATE)) 62 && (level == 0) && (status == SL_PREFETCHSTATUS_UNDERFLOW)) { 63 fprintf(stdout, "PrefetchEventCallback: Error while prefetching data, exiting\n"); 64 prefetchError = true; 65 } 66 } 67 68 //----------------------------------------------------------------- 69 70 /* Play an audio path by opening a file descriptor on that path */ 71 void TestPlayPathFromFD( SLObjectItf sl, const char* path, SLAint64 offset, SLAint64 size) 72 { 73 SLresult result; 74 SLEngineItf EngineItf; 75 76 /* Objects this application uses: one player and an ouput mix */ 77 SLObjectItf player, outputMix; 78 79 /* Source of audio data to play */ 80 SLDataSource audioSource; 81 SLDataLocator_AndroidFD locatorFd; 82 SLDataFormat_MIME mime; 83 84 /* Data sinks for the audio player */ 85 SLDataSink audioSink; 86 SLDataLocator_OutputMix locator_outputmix; 87 88 /* Play and PrefetchStatus interfaces for the audio player */ 89 SLPlayItf playItf; 90 SLPrefetchStatusItf prefetchItf; 91 92 SLboolean required[MAX_NUMBER_INTERFACES]; 93 SLInterfaceID iidArray[MAX_NUMBER_INTERFACES]; 94 95 /* Get the SL Engine Interface which is implicit */ 96 result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf); 97 ExitOnError(result); 98 99 /* Initialize arrays required[] and iidArray[] */ 100 for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) { 101 required[i] = SL_BOOLEAN_FALSE; 102 iidArray[i] = SL_IID_NULL; 103 } 104 105 /* ------------------------------------------------------ */ 106 /* Configuration of the output mix */ 107 108 /* Create Output Mix object to be used by the player */ 109 result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 0, iidArray, required); 110 ExitOnError(result); 111 112 /* Realize the Output Mix object in synchronous mode */ 113 result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE); 114 ExitOnError(result); 115 116 /* Setup the data sink structure */ 117 locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX; 118 locator_outputmix.outputMix = outputMix; 119 audioSink.pLocator = (void*)&locator_outputmix; 120 audioSink.pFormat = NULL; 121 122 /* ------------------------------------------------------ */ 123 /* Configuration of the player */ 124 125 /* Set arrays required[] and iidArray[] for SLPrefetchStatusItf interfaces */ 126 /* (SLPlayItf is implicit) */ 127 required[0] = SL_BOOLEAN_TRUE; 128 iidArray[0] = SL_IID_PREFETCHSTATUS; 129 130 /* Setup the data source structure for the URI */ 131 locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD; 132 int fd = open(path, O_RDONLY); 133 if (fd == -1) { 134 perror(path); 135 exit(EXIT_FAILURE); 136 } 137 locatorFd.fd = (SLint32) fd; 138 locatorFd.length = size; 139 locatorFd.offset = offset; 140 141 mime.formatType = SL_DATAFORMAT_MIME; 142 /* this is how ignored mime information is specified, according to OpenSL ES spec 143 * in 9.1.6 SLDataFormat_MIME and 8.23 SLMetadataTraversalItf GetChildInfo */ 144 mime.mimeType = (SLchar*)NULL; 145 mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED; 146 147 audioSource.pFormat = (void*)&mime; 148 audioSource.pLocator = (void*)&locatorFd; 149 150 /* Create the audio player */ 151 result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 1, 152 iidArray, required); 153 ExitOnError(result); 154 155 /* Realize the player in synchronous mode. */ 156 result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result); 157 fprintf(stdout, "URI example: after Realize\n"); 158 159 /* Get the SLPlayItf, SLPrefetchStatusItf and SLAndroidStreamTypeItf interfaces for the player*/ 160 result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf); 161 ExitOnError(result); 162 163 result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf); 164 ExitOnError(result); 165 166 /* Set up prefetching callback.*/ 167 result = (*prefetchItf)->RegisterCallback(prefetchItf, PrefetchEventCallback, &prefetchItf); 168 ExitOnError(result); 169 result = (*prefetchItf)->SetCallbackEventsMask(prefetchItf, PREFETCHEVENT_ERROR_CANDIDATE); 170 ExitOnError(result); 171 172 fprintf(stdout, "Player configured\n"); 173 174 /* ------------------------------------------------------ */ 175 /* Playback and test */ 176 177 /* Start the data prefetching by setting the player to the paused state */ 178 result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED ); 179 ExitOnError(result); 180 181 /* Wait until there's data to play */ 182 SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW; 183 while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) { 184 usleep(100 * 1000); 185 result = (*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus); 186 ExitOnError(result); 187 if (prefetchError) { 188 fprintf(stderr, "Failure to prefetch data, exiting\n"); 189 ExitOnError(SL_RESULT_CONTENT_NOT_FOUND); 190 } 191 } 192 193 /* Get duration */ 194 SLmillisecond durationInMsec = SL_TIME_UNKNOWN; 195 result = (*playItf)->GetDuration(playItf, &durationInMsec); 196 ExitOnError(result); 197 if (durationInMsec == SL_TIME_UNKNOWN) { 198 durationInMsec = 5000; 199 } 200 201 /* Start playback */ 202 result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING ); 203 ExitOnError(result); 204 205 usleep(durationInMsec * 1000); 206 207 /* Make sure player is stopped */ 208 fprintf(stdout, "Stopping playback\n"); 209 result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED); 210 ExitOnError(result); 211 212 /* Destroy the player */ 213 (*player)->Destroy(player); 214 215 /* Destroy Output Mix object */ 216 (*outputMix)->Destroy(outputMix); 217 218 close(fd); 219 } 220 221 //----------------------------------------------------------------- 222 int main(int argc, char* const argv[]) 223 { 224 SLresult result; 225 SLObjectItf sl; 226 227 fprintf(stdout, "OpenSL ES test %s: exercises SLPlayItf ", argv[0]); 228 fprintf(stdout, "and AudioPlayer with SLDataLocator_AndroidFD source / OutputMix sink\n"); 229 fprintf(stdout, "Plays the sound file designated by the given path, "); 230 fprintf(stdout, "starting at the specified offset, and using the specified length.\n"); 231 fprintf(stdout, "Omit the length of the file for it to be computed by the system.\n"); 232 233 if (argc < 3) { 234 fprintf(stdout, "Usage: \t%s path offsetInBytes [sizeInBytes]\n", argv[0]); 235 fprintf(stdout, "Example: \"%s /sdcard/my.mp3 0 344460\" \n", argv[0]); 236 exit(EXIT_FAILURE); 237 } 238 239 SLEngineOption EngineOption[] = { 240 {(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE} 241 }; 242 243 result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL); 244 ExitOnError(result); 245 246 /* Realizing the SL Engine in synchronous mode. */ 247 result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE); 248 ExitOnError(result); 249 250 if (argc == 3) { 251 fprintf(stdout, "no file size given, using SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE\n"); 252 TestPlayPathFromFD(sl, argv[1], (SLAint64)atoi(argv[2]), 253 SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE); 254 } else { 255 TestPlayPathFromFD(sl, argv[1], (SLAint64)atoi(argv[2]), (SLAint64)atoi(argv[3])); 256 } 257 258 /* Shutdown OpenSL ES */ 259 (*sl)->Destroy(sl); 260 261 return EXIT_SUCCESS; 262 } 263
