/*
* 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 <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <SLES/OpenSLES.h>
#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;
}