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289 lines
11 KiB
289 lines
11 KiB
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <SLES/OpenSLES.h>
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#define MAX_NUMBER_INTERFACES 3
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//-----------------------------------------------------------------
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/* Exits the application if an error is encountered */
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void ExitOnError( SLresult result )
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{
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if (SL_RESULT_SUCCESS != result) {
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fprintf(stdout, "%u error code encountered, exiting\n", result);
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exit(EXIT_FAILURE);
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}
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}
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//-----------------------------------------------------------------
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/* PlayItf callback for an audio player */
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void PlayEventCallback( SLPlayItf caller __unused, void *pContext __unused, SLuint32 event)
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{
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fprintf(stdout, "PlayEventCallback event = ");
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if (event & SL_PLAYEVENT_HEADATEND) {
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fprintf(stdout, "SL_PLAYEVENT_HEADATEND ");
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}
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if (event & SL_PLAYEVENT_HEADATMARKER) {
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fprintf(stdout, "SL_PLAYEVENT_HEADATMARKER ");
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}
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if (event & SL_PLAYEVENT_HEADATNEWPOS) {
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fprintf(stdout, "SL_PLAYEVENT_HEADATNEWPOS ");
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}
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if (event & SL_PLAYEVENT_HEADMOVING) {
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fprintf(stdout, "SL_PLAYEVENT_HEADMOVING ");
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}
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if (event & SL_PLAYEVENT_HEADSTALLED) {
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fprintf(stdout, "SL_PLAYEVENT_HEADSTALLED");
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}
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fprintf(stdout, "\n");
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}
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//-----------------------------------------------------------------
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/* Play two audio URIs, pan them left and right */
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void TestPlayUri( SLObjectItf sl, const char* path, const char* path2)
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{
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SLresult result;
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SLEngineItf EngineItf;
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/* Objects this application uses: two players and an ouput mix */
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SLObjectItf player, player2, outputMix;
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/* Source of audio data to play, we'll reuse the same source for two different players */
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SLDataSource audioSource;
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SLDataLocator_URI uri;
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SLDataFormat_MIME mime;
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/* Data sinks for the two audio players */
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SLDataSink audioSink;
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SLDataLocator_OutputMix locator_outputmix;
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/* Play, Volume and PrefetchStatus interfaces for the audio players */
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SLPlayItf playItf, playItf2;
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SLVolumeItf volItf, volItf2;
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SLPrefetchStatusItf prefetchItf, prefetchItf2;
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SLboolean required[MAX_NUMBER_INTERFACES];
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SLInterfaceID iidArray[MAX_NUMBER_INTERFACES];
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/* Get the SL Engine Interface which is implicit */
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result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
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ExitOnError(result);
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/* Initialize arrays required[] and iidArray[] */
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for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) {
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required[i] = SL_BOOLEAN_FALSE;
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iidArray[i] = SL_IID_NULL;
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}
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/* Set arrays required[] and iidArray[] for SLVolumeItf and SLPrefetchStatusItf interfaces */
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/* (SLPlayItf is implicit) */
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required[0] = SL_BOOLEAN_TRUE;
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iidArray[0] = SL_IID_VOLUME;
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required[1] = SL_BOOLEAN_TRUE;
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iidArray[1] = SL_IID_PREFETCHSTATUS;
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/* ------------------------------------------------------ */
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/* Configuration of the output mix */
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/* Create Output Mix object to be used each player */
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result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 0, iidArray, required);
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ExitOnError(result);
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/* Realize the Output Mix object in synchronous mode */
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result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE);
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ExitOnError(result);
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/* Setup the data sink structure */
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locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
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locator_outputmix.outputMix = outputMix;
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audioSink.pLocator = (void *)&locator_outputmix;
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audioSink.pFormat = NULL;
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/* ------------------------------------------------------ */
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/* Configuration of the players */
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/* Setup the data source structure for the first URI */
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uri.locatorType = SL_DATALOCATOR_URI;
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uri.URI = (SLchar*) path;
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mime.formatType = SL_DATAFORMAT_MIME;
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/* this is how ignored mime information is specified, according to OpenSL ES spec
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* in 9.1.6 SLDataFormat_MIME and 8.23 SLMetadataTraversalItf GetChildInfo */
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mime.mimeType = (SLchar*)NULL;
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mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED;
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audioSource.pFormat = (void *)&mime;
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audioSource.pLocator = (void *)&uri;
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/* Create the first audio player */
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result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 2,
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iidArray, required);
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ExitOnError(result);
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/* Create the second audio player with a different path for its data source */
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uri.URI = (SLchar*) path2;
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audioSource.pLocator = (void *)&uri;
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result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player2, &audioSource, &audioSink, 2,
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iidArray, required);
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ExitOnError(result);
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/* Realize the players in synchronous mode. */
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result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result);
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result = (*player)->Realize(player2, SL_BOOLEAN_FALSE); ExitOnError(result);
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//fprintf(stdout, "URI example: after Realize\n");
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/* Get the SLPlayItf, SLVolumeItf and SLPrefetchStatusItf interfaces for each player */
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result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf);
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ExitOnError(result);
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result = (*player)->GetInterface(player2, SL_IID_PLAY, (void*)&playItf2);
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ExitOnError(result);
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result = (*player)->GetInterface(player, SL_IID_VOLUME, (void*)&volItf);
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ExitOnError(result);
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result = (*player2)->GetInterface(player2, SL_IID_VOLUME, (void*)&volItf2);
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ExitOnError(result);
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result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf);
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ExitOnError(result);
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result = (*player2)->GetInterface(player2, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf2);
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ExitOnError(result);
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/* Setup to receive playback events */
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result = (*playItf)->RegisterCallback(playItf, PlayEventCallback, &playItf);
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ExitOnError(result);
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result = (*playItf)->SetCallbackEventsMask(playItf,
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SL_PLAYEVENT_HEADATEND| SL_PLAYEVENT_HEADATMARKER | SL_PLAYEVENT_HEADATNEWPOS
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| SL_PLAYEVENT_HEADMOVING | SL_PLAYEVENT_HEADSTALLED);
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ExitOnError(result);
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/* Set the player volume */
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result = (*volItf)->SetVolumeLevel( volItf, -300);
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ExitOnError(result);
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/* Pan the first player to the left */
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result = (*volItf)->EnableStereoPosition( volItf, SL_BOOLEAN_TRUE); ExitOnError(result);
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result = (*volItf)->SetStereoPosition( volItf, -1000); ExitOnError(result);
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/* Pan the second player to the right */
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result = (*volItf2)->EnableStereoPosition( volItf2, SL_BOOLEAN_TRUE); ExitOnError(result);
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result = (*volItf2)->SetStereoPosition( volItf2, 1000); ExitOnError(result);
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/* ------------------------------------------------------ */
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/* Playback */
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/* Start the data prefetching by setting the players to the paused state */
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result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED );
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ExitOnError(result);
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result = (*playItf2)->SetPlayState( playItf2, SL_PLAYSTATE_PAUSED );
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ExitOnError(result);
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/* wait until there's data to play */
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SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
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while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) {
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usleep(100 * 1000);
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(*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
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}
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prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
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while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) {
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usleep(100 * 1000);
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(*prefetchItf2)->GetPrefetchStatus(prefetchItf2, &prefetchStatus);
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}
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result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING );
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ExitOnError(result);
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/* Wait 2s before starting the second player */
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usleep(2000 * 1000);
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fprintf(stdout, "URI example: starting to play %s\n", path2);
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result = (*playItf2)->SetPlayState( playItf2, SL_PLAYSTATE_PLAYING );
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ExitOnError(result);
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/* Display duration */
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SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
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result = (*playItf)->GetDuration(playItf, &durationInMsec);
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ExitOnError(result);
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if (durationInMsec == SL_TIME_UNKNOWN) {
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fprintf(stdout, "Content duration of first URI is unknown\n");
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} else {
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fprintf(stdout, "Content duration of first URI is %u ms\n", durationInMsec);
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}
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/* Wait as long as the duration of the first URI + 2s before stopping */
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if (durationInMsec == SL_TIME_UNKNOWN) {
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durationInMsec = 5000; /* arbitrary time when duration is unknown */
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}
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usleep((durationInMsec + 2000) * 1000);
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/* Make sure player is stopped */
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fprintf(stdout, "URI example: stopping playback\n");
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result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
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ExitOnError(result);
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result = (*playItf2)->SetPlayState(playItf2, SL_PLAYSTATE_STOPPED);
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ExitOnError(result);
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/* Destroy the players */
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(*player)->Destroy(player);
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(*player2)->Destroy(player2);
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/* Destroy Output Mix object */
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(*outputMix)->Destroy(outputMix);
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}
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//-----------------------------------------------------------------
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int main(int argc, char* const argv[])
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{
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SLresult result;
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SLObjectItf sl;
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fprintf(stdout, "OpenSL ES test %s: exercises SLPlayItf, SLVolumeItf (incl. stereo position) ",
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argv[0]);
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fprintf(stdout, "and AudioPlayer with SLDataLocator_URI source / OutputMix sink\n");
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fprintf(stdout, "Plays two sounds (or twice the same) and pans them left and right.");
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fprintf(stdout, "Stops after the end of the first + 2s\n");
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if (argc == 1) {
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fprintf(stdout, "Usage: \n\t%s url1 url2 \n\t%s url\n", argv[0], argv[0]);
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fprintf(stdout, "Example: \"%s /sdcard/my.mp3 http://blabla/my.wav\" ", argv[0]);
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fprintf(stdout, "or \"%s file:///sdcard/my.mp3\"\n", argv[0]);
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exit(EXIT_FAILURE);
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}
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SLEngineOption EngineOption[] = {
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{(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE}
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};
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result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
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ExitOnError(result);
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/* Realizing the SL Engine in synchronous mode. */
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result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
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ExitOnError(result);
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if (argc == 2) {
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TestPlayUri(sl, argv[1], argv[1]);
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} else if (argc == 3) {
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TestPlayUri(sl, argv[1], argv[2]);
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}
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/* Shutdown OpenSL ES */
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(*sl)->Destroy(sl);
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return EXIT_SUCCESS;
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}
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