| /* |
| * 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 <stdlib.h> |
| #include <stdio.h> |
| #include <unistd.h> |
| |
| #include <SLES/OpenSLES.h> |
| |
| |
| #define MAX_NUMBER_INTERFACES 3 |
| |
| |
| //----------------------------------------------------------------- |
| /* Exits the application if an error is encountered */ |
| void ExitOnError( SLresult result ) |
| { |
| if (SL_RESULT_SUCCESS != result) { |
| fprintf(stdout, "%u error code encountered, exiting\n", result); |
| exit(EXIT_FAILURE); |
| } |
| } |
| |
| //----------------------------------------------------------------- |
| /* PlayItf callback for an audio player */ |
| void PlayEventCallback( SLPlayItf caller, void *pContext, SLuint32 event) |
| { |
| fprintf(stdout, "PlayEventCallback event = "); |
| if (event & SL_PLAYEVENT_HEADATEND) { |
| fprintf(stdout, "SL_PLAYEVENT_HEADATEND "); |
| } |
| if (event & SL_PLAYEVENT_HEADATMARKER) { |
| fprintf(stdout, "SL_PLAYEVENT_HEADATMARKER "); |
| } |
| if (event & SL_PLAYEVENT_HEADATNEWPOS) { |
| fprintf(stdout, "SL_PLAYEVENT_HEADATNEWPOS "); |
| } |
| if (event & SL_PLAYEVENT_HEADMOVING) { |
| fprintf(stdout, "SL_PLAYEVENT_HEADMOVING "); |
| } |
| if (event & SL_PLAYEVENT_HEADSTALLED) { |
| fprintf(stdout, "SL_PLAYEVENT_HEADSTALLED"); |
| } |
| fprintf(stdout, "\n"); |
| } |
| |
| //----------------------------------------------------------------- |
| |
| /* Play two audio URIs, pan them left and right */ |
| void TestPlayUri( SLObjectItf sl, const char* path, const char* path2) |
| { |
| SLresult result; |
| SLEngineItf EngineItf; |
| |
| /* Objects this application uses: two players and an ouput mix */ |
| SLObjectItf player, player2, outputMix; |
| |
| /* Source of audio data to play, we'll reuse the same source for two different players */ |
| SLDataSource audioSource; |
| SLDataLocator_URI uri; |
| SLDataFormat_MIME mime; |
| |
| /* Data sinks for the two audio players */ |
| SLDataSink audioSink; |
| SLDataLocator_OutputMix locator_outputmix; |
| |
| /* Play, Volume and PrefetchStatus interfaces for the audio players */ |
| SLPlayItf playItf, playItf2; |
| SLVolumeItf volItf, volItf2; |
| SLPrefetchStatusItf prefetchItf, prefetchItf2; |
| |
| 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; |
| } |
| /* Set arrays required[] and iidArray[] for SLVolumeItf and SLPrefetchStatusItf interfaces */ |
| /* (SLPlayItf is implicit) */ |
| required[0] = SL_BOOLEAN_TRUE; |
| iidArray[0] = SL_IID_VOLUME; |
| required[1] = SL_BOOLEAN_TRUE; |
| iidArray[1] = SL_IID_PREFETCHSTATUS; |
| |
| /* ------------------------------------------------------ */ |
| /* Configuration of the output mix */ |
| |
| /* Create Output Mix object to be used each 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 players */ |
| |
| /* Setup the data source structure for the first 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 first audio player */ |
| result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 2, |
| iidArray, required); |
| ExitOnError(result); |
| |
| /* Create the second audio player with a different path for its data source */ |
| uri.URI = (SLchar*) path2; |
| audioSource.pLocator = (void *)&uri; |
| result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player2, &audioSource, &audioSink, 2, |
| iidArray, required); |
| ExitOnError(result); |
| |
| /* Realize the players in synchronous mode. */ |
| result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result); |
| result = (*player)->Realize(player2, SL_BOOLEAN_FALSE); ExitOnError(result); |
| //fprintf(stdout, "URI example: after Realize\n"); |
| |
| /* Get the SLPlayItf, SLVolumeItf and SLPrefetchStatusItf interfaces for each player */ |
| result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf); |
| ExitOnError(result); |
| result = (*player)->GetInterface(player2, SL_IID_PLAY, (void*)&playItf2); |
| ExitOnError(result); |
| |
| result = (*player)->GetInterface(player, SL_IID_VOLUME, (void*)&volItf); |
| ExitOnError(result); |
| result = (*player2)->GetInterface(player2, SL_IID_VOLUME, (void*)&volItf2); |
| ExitOnError(result); |
| |
| result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf); |
| ExitOnError(result); |
| result = (*player2)->GetInterface(player2, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf2); |
| ExitOnError(result); |
| |
| /* Setup to receive playback events */ |
| result = (*playItf)->RegisterCallback(playItf, PlayEventCallback, &playItf); |
| ExitOnError(result); |
| result = (*playItf)->SetCallbackEventsMask(playItf, |
| SL_PLAYEVENT_HEADATEND| SL_PLAYEVENT_HEADATMARKER | SL_PLAYEVENT_HEADATNEWPOS |
| | SL_PLAYEVENT_HEADMOVING | SL_PLAYEVENT_HEADSTALLED); |
| ExitOnError(result); |
| |
| /* Set the player volume */ |
| result = (*volItf)->SetVolumeLevel( volItf, -300); |
| ExitOnError(result); |
| /* Pan the first player to the left */ |
| result = (*volItf)->EnableStereoPosition( volItf, SL_BOOLEAN_TRUE); ExitOnError(result); |
| result = (*volItf)->SetStereoPosition( volItf, -1000); ExitOnError(result); |
| /* Pan the second player to the right */ |
| result = (*volItf2)->EnableStereoPosition( volItf2, SL_BOOLEAN_TRUE); ExitOnError(result); |
| result = (*volItf2)->SetStereoPosition( volItf2, 1000); ExitOnError(result); |
| |
| /* ------------------------------------------------------ */ |
| /* Playback */ |
| |
| /* Start the data prefetching by setting the players to the paused state */ |
| result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED ); |
| ExitOnError(result); |
| result = (*playItf2)->SetPlayState( playItf2, 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); |
| } |
| prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW; |
| while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) { |
| usleep(100 * 1000); |
| (*prefetchItf2)->GetPrefetchStatus(prefetchItf2, &prefetchStatus); |
| } |
| |
| result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING ); |
| ExitOnError(result); |
| |
| /* Wait 2s before starting the second player */ |
| usleep(2000 * 1000); |
| fprintf(stdout, "URI example: starting to play %s\n", path2); |
| result = (*playItf2)->SetPlayState( playItf2, SL_PLAYSTATE_PLAYING ); |
| ExitOnError(result); |
| |
| /* Display duration */ |
| SLmillisecond durationInMsec = SL_TIME_UNKNOWN; |
| result = (*playItf)->GetDuration(playItf, &durationInMsec); |
| ExitOnError(result); |
| if (durationInMsec == SL_TIME_UNKNOWN) { |
| fprintf(stdout, "Content duration of first URI is unknown\n"); |
| } else { |
| fprintf(stdout, "Content duration of first URI is %u ms\n", durationInMsec); |
| } |
| |
| /* Wait as long as the duration of the first URI + 2s before stopping */ |
| if (durationInMsec == SL_TIME_UNKNOWN) { |
| durationInMsec = 5000; /* arbitrary time when duration is unknown */ |
| } |
| usleep((durationInMsec + 2000) * 1000); |
| |
| /* Make sure player is stopped */ |
| fprintf(stdout, "URI example: stopping playback\n"); |
| result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED); |
| ExitOnError(result); |
| result = (*playItf2)->SetPlayState(playItf2, SL_PLAYSTATE_STOPPED); |
| ExitOnError(result); |
| |
| /* Destroy the players */ |
| (*player)->Destroy(player); |
| (*player2)->Destroy(player2); |
| |
| /* 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 (incl. stereo position) ", |
| argv[0]); |
| fprintf(stdout, "and AudioPlayer with SLDataLocator_URI source / OutputMix sink\n"); |
| fprintf(stdout, "Plays two sounds (or twice the same) and pans them left and right."); |
| fprintf(stdout, "Stops after the end of the first + 2s\n"); |
| |
| if (argc == 1) { |
| fprintf(stdout, "Usage: \n\t%s url1 url2 \n\t%s url\n", argv[0], argv[0]); |
| fprintf(stdout, "Example: \"%s /sdcard/my.mp3 http://blabla/my.wav\" ", argv[0]); |
| fprintf(stdout, "or \"%s file:///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 == 2) { |
| TestPlayUri(sl, argv[1], argv[1]); |
| } else if (argc == 3) { |
| TestPlayUri(sl, argv[1], argv[2]); |
| } |
| |
| /* Shutdown OpenSL ES */ |
| (*sl)->Destroy(sl); |
| |
| return EXIT_SUCCESS; |
| } |