/* * Copyright (C) 2010 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include #include #include #include #define MAX_NUMBER_INTERFACES 2 #define TEST_MUTE 0 #define TEST_SOLO 1 //----------------------------------------------------------------- /* Exits the application if an error is encountered */ #define ExitOnError(x) ExitOnErrorFunc(x,__LINE__) void ExitOnErrorFunc( SLresult result , int line) { if (SL_RESULT_SUCCESS != result) { fprintf(stdout, "%u error code encountered at line %d, exiting\n", result, line); exit(EXIT_FAILURE); } } //----------------------------------------------------------------- /* Play an audio URIs, play, pause, stop */ void TestPlayUri( SLObjectItf sl, const char* path) { SLresult result; SLEngineItf EngineItf; /* Objects this application uses: one player and an ouput mix */ SLObjectItf player, outputMix; /* Source of audio data to play */ SLDataSource audioSource; SLDataLocator_URI uri; SLDataFormat_MIME mime; /* Data sinks for the audio player */ SLDataSink audioSink; SLDataLocator_OutputMix locator_outputmix; /* Play, Volume and PrefetchStatus interfaces for the audio player */ SLPlayItf playItf; SLMuteSoloItf muteSoloItf; SLPrefetchStatusItf prefetchItf; SLboolean required[MAX_NUMBER_INTERFACES]; SLInterfaceID iidArray[MAX_NUMBER_INTERFACES]; /* Get the SL Engine Interface which is implicit */ result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf); ExitOnError(result); /* Initialize arrays required[] and iidArray[] */ for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) { required[i] = SL_BOOLEAN_FALSE; iidArray[i] = SL_IID_NULL; } /* ------------------------------------------------------ */ /* Configuration of the output mix */ /* Create Output Mix object to be used by the player */ result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 0, iidArray, required); ExitOnError(result); /* Realize the Output Mix object in synchronous mode */ result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE); ExitOnError(result); /* Setup the data sink structure */ locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX; locator_outputmix.outputMix = outputMix; audioSink.pLocator = (void*)&locator_outputmix; audioSink.pFormat = NULL; /* ------------------------------------------------------ */ /* Configuration of the player */ /* Set arrays required[] and iidArray[] for SLMuteSoloItf and SLPrefetchStatusItf interfaces */ /* (SLPlayItf is implicit) */ required[0] = SL_BOOLEAN_TRUE; iidArray[0] = SL_IID_MUTESOLO; required[1] = SL_BOOLEAN_TRUE; iidArray[1] = SL_IID_PREFETCHSTATUS; /* Setup the data source structure for the URI */ uri.locatorType = SL_DATALOCATOR_URI; uri.URI = (SLchar*) path; mime.formatType = SL_DATAFORMAT_MIME; /* this is how ignored mime information is specified, according to OpenSL ES spec * in 9.1.6 SLDataFormat_MIME and 8.23 SLMetadataTraversalItf GetChildInfo */ mime.mimeType = (SLchar*)NULL; mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED; audioSource.pFormat = (void*)&mime; audioSource.pLocator = (void*)&uri; /* Create the audio player */ result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, MAX_NUMBER_INTERFACES, iidArray, required); ExitOnError(result); /* Realize the player in synchronous mode. */ result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result); fprintf(stdout, "URI example: after Realize\n"); /* Get the SLPlayItf, SLPrefetchStatusItf and SLMuteSoloItf interfaces for the player */ result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf); ExitOnError(result); result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf); ExitOnError(result); result = (*player)->GetInterface(player, SL_IID_MUTESOLO, (void*)&muteSoloItf); ExitOnError(result); fprintf(stdout, "Player configured\n"); /* ------------------------------------------------------ */ /* Playback and test */ /* Start the data prefetching by setting the player to the paused state */ result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED ); ExitOnError(result); /* Wait until there's data to play */ SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW; while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) { usleep(100 * 1000); (*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus); } /* Testing play states */ /* let it play for 2s */ fprintf(stdout, "----- Playing\n"); result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING ); ExitOnError(result); usleep(2 * 1000 * 1000); /* pause for 1s*/ fprintf(stdout, "----- Pausing (1s)\n"); result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED ); ExitOnError(result); usleep(2 * 1000 * 1000); /* resume */ fprintf(stdout, "----- Playing (2s, should have resumed where it paused)\n"); result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING ); ExitOnError(result); usleep(2 * 1000 * 1000); /* stop */ fprintf(stdout, "----- Stopping\n"); result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED); ExitOnError(result); /* play for 2s */ fprintf(stdout, "----- Playing (2s, should have started from the beginning\n"); result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING ); ExitOnError(result); usleep(2 * 1000 * 1000); /* stop */ fprintf(stdout, "----- Stopping\n"); result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED); ExitOnError(result); /* Destroy the players */ (*player)->Destroy(player); /* Destroy Output Mix object */ (*outputMix)->Destroy(outputMix); } //----------------------------------------------------------------- int main(int argc, char* const argv[]) { SLresult result; SLObjectItf sl; fprintf(stdout, "OpenSL ES test %s: exercises SLPlayItf, SLVolumeItf, SLMuteSoloItf\n", argv[0]); fprintf(stdout, "and AudioPlayer with SLDataLocator_URI source / OutputMix sink\n"); fprintf(stdout, "Plays a sound and alternates the muting of the channels (for 5s).\n"); fprintf(stdout, " and then alternates the solo\'ing of the channels (for 5s).\n"); fprintf(stdout, "Stops after 10s\n"); if (argc == 1) { fprintf(stdout, "Usage: \t%s url\n", argv[0]); fprintf(stdout, "Example: \"%s /sdcard/my.mp3\"\n", argv[0]); exit(EXIT_FAILURE); } SLEngineOption EngineOption[] = { {(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE} }; result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL); ExitOnError(result); /* Realizing the SL Engine in synchronous mode. */ result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE); ExitOnError(result); if (argc > 1) { TestPlayUri(sl, argv[1]); } /* Shutdown OpenSL ES */ (*sl)->Destroy(sl); return EXIT_SUCCESS; }