/* * 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 #include #ifdef ANDROID #include #endif #define MAX_NUMBER_INTERFACES 3 #define TIME_S_BETWEEN_VIRT_ON_OFF 3 //----------------------------------------------------------------- /* 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(stderr, "%u error code encountered at line %d, exiting\n", result, line); exit(EXIT_FAILURE); } } //----------------------------------------------------------------- /* Play an audio path by opening a file descriptor on that path */ void TestVirtualizerPathFromFD( SLObjectItf sl, const char* path, int16_t virtStrength, bool alwaysOn) { 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; #ifdef ANDROID SLDataLocator_AndroidFD locatorFd; #else SLDataLocator_URI locatorUri; #endif SLDataFormat_MIME mime; /* Data sinks for the audio player */ SLDataSink audioSink; SLDataLocator_OutputMix locator_outputmix; /* Play and PrefetchStatus interfaces for the audio player */ SLPlayItf playItf; SLPrefetchStatusItf prefetchItf; SLVirtualizerItf virtItf; 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 SLPrefetchStatusItf interfaces */ /* (SLPlayItf is implicit) */ required[0] = SL_BOOLEAN_TRUE; iidArray[0] = SL_IID_PREFETCHSTATUS; required[1] = SL_BOOLEAN_TRUE; iidArray[1] = SL_IID_VIRTUALIZER; #ifdef ANDROID /* Setup the data source structure for the URI */ locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD; int fd = open(path, O_RDONLY); if (fd == -1) { ExitOnError(SL_RESULT_RESOURCE_ERROR); } locatorFd.fd = (SLint32) fd; locatorFd.length = SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE; locatorFd.offset = 0; #else locatorUri.locatorType = SL_DATALOCATOR_URI; locatorUri.URI = (SLchar *) path; #endif 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; #ifdef ANDROID audioSource.pLocator = (void*)&locatorFd; #else audioSource.pLocator = (void*)&locatorUri; #endif /* Create the audio player */ result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 2, 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 SLAndroidStreamTypeItf 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_VIRTUALIZER, (void*)&virtItf); 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); ExitOnError(result); } /* Get duration */ SLmillisecond durationInMsec = SL_TIME_UNKNOWN; result = (*playItf)->GetDuration(playItf, &durationInMsec); ExitOnError(result); if (durationInMsec == SL_TIME_UNKNOWN) { durationInMsec = 5000; } /* Start playback */ fprintf(stdout, "Starting to play\n"); result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING ); ExitOnError(result); /* Configure Virtualizer */ SLboolean strengthSupported = SL_BOOLEAN_FALSE; result = (*virtItf)->IsStrengthSupported(virtItf, &strengthSupported); ExitOnError(result); if (SL_BOOLEAN_FALSE == strengthSupported) { fprintf(stdout, "Virtualizer strength is not supported on this platform. Too bad!\n"); } else { fprintf(stdout, "Virtualizer strength is supported, setting strength to %d\n", virtStrength); result = (*virtItf)->SetStrength(virtItf, virtStrength); ExitOnError(result); } SLpermille strength = 0; result = (*virtItf)->GetRoundedStrength(virtItf, &strength); ExitOnError(result); fprintf(stdout, "Rounded strength of virt = %d\n", strength); /* Switch Virtualizer on/off every TIME_S_BETWEEN_VIRT_ON_OFF seconds unless always on */ SLboolean previousEnabled = SL_BOOLEAN_FALSE; for(unsigned int j=0 ; j<(durationInMsec/(1000*TIME_S_BETWEEN_VIRT_ON_OFF)) ; j++) { SLboolean enabled; result = (*virtItf)->IsEnabled(virtItf, &enabled); ExitOnError(result); enabled = alwaysOn || !enabled; if (enabled != previousEnabled) { result = (*virtItf)->SetEnabled(virtItf, enabled); ExitOnError(result); previousEnabled = enabled; if (SL_BOOLEAN_TRUE == enabled) { fprintf(stdout, "Virtualizer on\n"); } else { fprintf(stdout, "Virtualizer off\n"); } } usleep(TIME_S_BETWEEN_VIRT_ON_OFF * 1000 * 1000); } /* Make sure player is stopped */ fprintf(stdout, "Stopping playback\n"); result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED); ExitOnError(result); /* Destroy the player */ (*player)->Destroy(player); /* Destroy Output Mix object */ (*outputMix)->Destroy(outputMix); #ifdef ANDROID close(fd); #endif } //----------------------------------------------------------------- int main(int argc, char* const argv[]) { const char *programName = argv[0]; SLresult result; SLObjectItf sl; fprintf(stdout, "OpenSL ES test %s: exercises SLVirtualizerItf ", programName); fprintf(stdout, "and AudioPlayer with SLDataLocator_AndroidFD source / OutputMix sink\n"); fprintf(stdout, "Plays the sound file designated by the given path, "); fprintf(stdout, "and applies a virtualization effect of the specified strength,\n"); fprintf(stdout, "where strength is an integer value between 0 and 1000.\n"); fprintf(stdout, "Every %d seconds, the Virtualizer will be turned on and off,\n", TIME_S_BETWEEN_VIRT_ON_OFF); fprintf(stdout, "unless the --always-on option is specified before the path.\n"); bool alwaysOn = false; if (argc >= 2 && !strcmp(argv[1], "--always-on")) { alwaysOn = true; --argc; ++argv; } if (argc < 3) { fprintf(stdout, "Usage: \t%s [--always-on] path virtualization_strength\n", programName); fprintf(stdout, "Example: \"%s /sdcard/my.mp3 1000\" \n", programName); 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); // intentionally not checking that argv[2], the virtualizer strength, is between 0 and 1000 TestVirtualizerPathFromFD(sl, argv[1], (int16_t)atoi(argv[2]), alwaysOn); /* Shutdown OpenSL ES */ (*sl)->Destroy(sl); return EXIT_SUCCESS; }