tests/mimeUri/slesTestLoopUri.cpp - platform/frameworks/wilhelm - Git at Google

 /*
  * 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 <assert.h>
 #include <pthread.h>
 #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 REPETITIONS 4

 // These are extensions to OpenSL ES 1.0.1 values

 #define SL_PREFETCHSTATUS_UNKNOWN 0
 #define SL_PREFETCHSTATUS_ERROR   ((SLuint32) -1)

 // Mutex and condition shared with main program to protect prefetch_status

 static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
 static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
 SLuint32 prefetch_status = SL_PREFETCHSTATUS_UNKNOWN;

 /* used to detect errors likely to have occured when the OpenSL ES framework fails to open
  * a resource, for instance because a file URI is invalid, or an HTTP server doesn't respond.
  */
 #define PREFETCHEVENT_ERROR_CANDIDATE \
         (SL_PREFETCHEVENT_STATUSCHANGE | SL_PREFETCHEVENT_FILLLEVELCHANGE)

 //-----------------------------------------------------------------
 //* Exits the application if an error is encountered */
 #define CheckErr(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);
     }
 }

 //-----------------------------------------------------------------
 /* PrefetchStatusItf callback for an audio player */
 void PrefetchEventCallback( SLPrefetchStatusItf caller, void *pContext, SLuint32 event)
 {
     SLresult result;
     // pContext is unused here, so we pass NULL
     assert(pContext == NULL);
     SLpermille level = 0;
     result = (*caller)->GetFillLevel(caller, &level);
     CheckErr(result);
     SLuint32 status;
     result = (*caller)->GetPrefetchStatus(caller, &status);
     CheckErr(result);
     if (event & SL_PREFETCHEVENT_FILLLEVELCHANGE) {
         fprintf(stdout, "\t\tPrefetchEventCallback: Buffer fill level is = %d\n", level);
     }
     if (event & SL_PREFETCHEVENT_STATUSCHANGE) {
         fprintf(stdout, "\t\tPrefetchEventCallback: Prefetch Status is = %u\n", status);
     }
     SLuint32 new_prefetch_status;
     if ((event & PREFETCHEVENT_ERROR_CANDIDATE) == PREFETCHEVENT_ERROR_CANDIDATE
             && (level == 0) && (status == SL_PREFETCHSTATUS_UNDERFLOW)) {
         fprintf(stdout, "\t\tPrefetchEventCallback: Error while prefetching data, exiting\n");
         new_prefetch_status = SL_PREFETCHSTATUS_ERROR;
     } else if (event == SL_PREFETCHEVENT_STATUSCHANGE &&
             status == SL_PREFETCHSTATUS_SUFFICIENTDATA) {
         new_prefetch_status = status;
     } else {
         return;
     }
     int ok;
     ok = pthread_mutex_lock(&mutex);
     assert(ok == 0);
     prefetch_status = new_prefetch_status;
     ok = pthread_cond_signal(&cond);
     assert(ok == 0);
     ok = pthread_mutex_unlock(&mutex);
     assert(ok == 0);
 }


 //-----------------------------------------------------------------
 /* PlayItf callback for playback events */
 void PlayEventCallback(
         SLPlayItf caller __unused,
         void *pContext,
         SLuint32 event)
 {
     // pContext is unused here, so we pass NULL
     assert(NULL == pContext);
     if (SL_PLAYEVENT_HEADATEND == event) {
         printf("SL_PLAYEVENT_HEADATEND reached\n");
     } else {
         fprintf(stderr, "Unexpected play event 0x%x", event);
     }
 }


 //-----------------------------------------------------------------

 /* Play some music from a URI  */
 void TestLoopUri( SLObjectItf sl, const char* path)
 {
     SLEngineItf                EngineItf;

     SLresult                   res;

     SLDataSource               audioSource;
     SLDataLocator_URI          uri;
     SLDataFormat_MIME          mime;

     SLDataSink                 audioSink;
     SLDataLocator_OutputMix    locator_outputmix;

     SLObjectItf                player;
     SLPlayItf                  playItf;
     SLSeekItf                  seekItf;
     SLPrefetchStatusItf        prefetchItf;

     SLObjectItf                OutputMix;

     SLboolean required[MAX_NUMBER_INTERFACES];
     SLInterfaceID iidArray[MAX_NUMBER_INTERFACES];

     /* Get the SL Engine Interface which is implicit */
     res = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
     CheckErr(res);

     /* Initialize arrays required[] and iidArray[] */
     for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) {
         required[i] = SL_BOOLEAN_FALSE;
         iidArray[i] = SL_IID_NULL;
     }

     required[0] = SL_BOOLEAN_TRUE;
     iidArray[0] = SL_IID_VOLUME;
     // Create Output Mix object to be used by player
     res = (*EngineItf)->CreateOutputMix(EngineItf, &OutputMix, 0,
             iidArray, required); CheckErr(res);

     // Realizing the Output Mix object in synchronous mode.
     res = (*OutputMix)->Realize(OutputMix, SL_BOOLEAN_FALSE);
     CheckErr(res);

     /* Setup the data source structure for the URI */
     uri.locatorType = SL_DATALOCATOR_URI;
     uri.URI         =  (SLchar*) path;
     mime.formatType    = SL_DATAFORMAT_MIME;
     mime.mimeType      = (SLchar*)NULL;
     mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED;

     audioSource.pFormat      = (void *)&mime;
     audioSource.pLocator     = (void *)&uri;

     /* Setup the data sink structure */
     locator_outputmix.locatorType   = SL_DATALOCATOR_OUTPUTMIX;
     locator_outputmix.outputMix    = OutputMix;
     audioSink.pLocator           = (void *)&locator_outputmix;
     audioSink.pFormat            = NULL;

     /* Create the audio player */
     required[0] = SL_BOOLEAN_TRUE;
     iidArray[0] = SL_IID_SEEK;
     required[1] = SL_BOOLEAN_TRUE;
     iidArray[1] = SL_IID_PREFETCHSTATUS;
     res = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink,
             MAX_NUMBER_INTERFACES, iidArray, required); CheckErr(res);

     /* Realizing the player in synchronous mode. */
     res = (*player)->Realize(player, SL_BOOLEAN_FALSE); CheckErr(res);
     fprintf(stdout, "URI example: after Realize\n");

     /* Get interfaces */
     res = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf);
     CheckErr(res);

     res = (*player)->GetInterface(player, SL_IID_SEEK,  (void*)&seekItf);
     CheckErr(res);

     res = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf);
     CheckErr(res);
     res = (*prefetchItf)->RegisterCallback(prefetchItf, PrefetchEventCallback, NULL);
     CheckErr(res);
     res = (*prefetchItf)->SetCallbackEventsMask(prefetchItf,
             SL_PREFETCHEVENT_FILLLEVELCHANGE | SL_PREFETCHEVENT_STATUSCHANGE);
     CheckErr(res);

     /* Configure fill level updates every 5 percent */
     (*prefetchItf)->SetFillUpdatePeriod(prefetchItf, 50);

     /* Set up the player callback to get head-at-end events */
     res = (*playItf)->SetCallbackEventsMask(playItf, SL_PLAYEVENT_HEADATEND);
     CheckErr(res);
     res = (*playItf)->RegisterCallback(playItf, PlayEventCallback, NULL);
     CheckErr(res);

     /* Display duration */
     SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
     res = (*playItf)->GetDuration(playItf, &durationInMsec);
     CheckErr(res);
     if (durationInMsec == SL_TIME_UNKNOWN) {
         fprintf(stdout, "Content duration is unknown (before starting to prefetch)\n");
     } else {
         fprintf(stdout, "Content duration is %u ms (before starting to prefetch)\n",
                 durationInMsec);
     }

     /* Loop on the whole of the content */
     res = (*seekItf)->SetLoop(seekItf, SL_BOOLEAN_TRUE, 0, SL_TIME_UNKNOWN);
     CheckErr(res);

     /* Play the URI */
     /*     first cause the player to prefetch the data */
     res = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED );
     CheckErr(res);

     // wait for prefetch status callback to indicate either sufficient data or error
     pthread_mutex_lock(&mutex);
     while (prefetch_status == SL_PREFETCHSTATUS_UNKNOWN) {
         pthread_cond_wait(&cond, &mutex);
     }
     pthread_mutex_unlock(&mutex);
     if (prefetch_status == SL_PREFETCHSTATUS_ERROR) {
         fprintf(stderr, "Error during prefetch, exiting\n");
         goto destroyRes;
     }

     /* Display duration again, */
     res = (*playItf)->GetDuration(playItf, &durationInMsec);
     CheckErr(res);
     if (durationInMsec == SL_TIME_UNKNOWN) {
         fprintf(stdout, "Content duration is unknown (after prefetch completed)\n");
     } else {
         fprintf(stdout, "Content duration is %u ms (after prefetch completed)\n", durationInMsec);
     }

     /* Start playing */
     fprintf(stdout, "starting to play\n");
     res = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING );
     CheckErr(res);

     /* Wait as long as the duration of the content, times the repetitions,
      * before stopping the loop */
     usleep( (REPETITIONS-1) * durationInMsec * 1100);
     res = (*seekItf)->SetLoop(seekItf, SL_BOOLEAN_FALSE, 0, SL_TIME_UNKNOWN);
     CheckErr(res);
     fprintf(stdout, "As of now, stopped looping (sound shouldn't repeat from now on)\n");
     /* wait some more to make sure it doesn't repeat */
     usleep(durationInMsec * 1000);

     /* Stop playback */
     fprintf(stdout, "stopping playback\n");
     res = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
     CheckErr(res);

 destroyRes:

     /* Destroy the player */
     (*player)->Destroy(player);

     /* Destroy Output Mix object */
     (*OutputMix)->Destroy(OutputMix);
 }

 //-----------------------------------------------------------------
 int main(int argc, char* const argv[])
 {
     SLresult    res;
     SLObjectItf sl;

     fprintf(stdout, "OpenSL ES test %s: exercises SLPlayItf, SLSeekItf ", argv[0]);
     fprintf(stdout, "and AudioPlayer with SLDataLocator_URI source / OutputMix sink\n");
     fprintf(stdout, "Plays a sound and loops it %d times.\n\n", REPETITIONS);

     if (argc == 1) {
         fprintf(stdout, "Usage: \n\t%s path \n\t%s url\n", argv[0], argv[0]);
         fprintf(stdout, "Example: \"%s /sdcard/my.mp3\"  or \"%s file:///sdcard/my.mp3\"\n",
                 argv[0], argv[0]);
         exit(EXIT_FAILURE);
     }

     SLEngineOption EngineOption[] = {
             {(SLuint32) SL_ENGINEOPTION_THREADSAFE,
             (SLuint32) SL_BOOLEAN_TRUE}};

     res = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
     CheckErr(res);
     /* Realizing the SL Engine in synchronous mode. */
     res = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
     CheckErr(res);

     TestLoopUri(sl, argv[1]);

     /* Shutdown OpenSL ES */
     (*sl)->Destroy(sl);

     return EXIT_SUCCESS;
 }
	/*
	* 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 <assert.h>
	#include <pthread.h>
	#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 REPETITIONS 4

	// These are extensions to OpenSL ES 1.0.1 values

	#define SL_PREFETCHSTATUS_UNKNOWN 0
	#define SL_PREFETCHSTATUS_ERROR ((SLuint32) -1)

	// Mutex and condition shared with main program to protect prefetch_status

	static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
	static pthread_cond_t cond = PTHREAD_COND_INITIALIZER;
	SLuint32 prefetch_status = SL_PREFETCHSTATUS_UNKNOWN;

	/* used to detect errors likely to have occured when the OpenSL ES framework fails to open
	* a resource, for instance because a file URI is invalid, or an HTTP server doesn't respond.
	*/
	#define PREFETCHEVENT_ERROR_CANDIDATE \
	(SL_PREFETCHEVENT_STATUSCHANGE \| SL_PREFETCHEVENT_FILLLEVELCHANGE)

	//-----------------------------------------------------------------
	//* Exits the application if an error is encountered */
	#define CheckErr(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);
	}
	}

	//-----------------------------------------------------------------
	/* PrefetchStatusItf callback for an audio player */
	void PrefetchEventCallback( SLPrefetchStatusItf caller, void *pContext, SLuint32 event)
	{
	SLresult result;
	// pContext is unused here, so we pass NULL
	assert(pContext == NULL);
	SLpermille level = 0;
	result = (*caller)->GetFillLevel(caller, &level);
	CheckErr(result);
	SLuint32 status;
	result = (*caller)->GetPrefetchStatus(caller, &status);
	CheckErr(result);
	if (event & SL_PREFETCHEVENT_FILLLEVELCHANGE) {
	fprintf(stdout, "\t\tPrefetchEventCallback: Buffer fill level is = %d\n", level);
	}
	if (event & SL_PREFETCHEVENT_STATUSCHANGE) {
	fprintf(stdout, "\t\tPrefetchEventCallback: Prefetch Status is = %u\n", status);
	}
	SLuint32 new_prefetch_status;
	if ((event & PREFETCHEVENT_ERROR_CANDIDATE) == PREFETCHEVENT_ERROR_CANDIDATE
	&& (level == 0) && (status == SL_PREFETCHSTATUS_UNDERFLOW)) {
	fprintf(stdout, "\t\tPrefetchEventCallback: Error while prefetching data, exiting\n");
	new_prefetch_status = SL_PREFETCHSTATUS_ERROR;
	} else if (event == SL_PREFETCHEVENT_STATUSCHANGE &&
	status == SL_PREFETCHSTATUS_SUFFICIENTDATA) {
	new_prefetch_status = status;
	} else {
	return;
	}
	int ok;
	ok = pthread_mutex_lock(&mutex);
	assert(ok == 0);
	prefetch_status = new_prefetch_status;
	ok = pthread_cond_signal(&cond);
	assert(ok == 0);
	ok = pthread_mutex_unlock(&mutex);
	assert(ok == 0);
	}


	//-----------------------------------------------------------------
	/* PlayItf callback for playback events */
	void PlayEventCallback(
	SLPlayItf caller __unused,
	void *pContext,
	SLuint32 event)
	{
	// pContext is unused here, so we pass NULL
	assert(NULL == pContext);
	if (SL_PLAYEVENT_HEADATEND == event) {
	printf("SL_PLAYEVENT_HEADATEND reached\n");
	} else {
	fprintf(stderr, "Unexpected play event 0x%x", event);
	}
	}


	//-----------------------------------------------------------------

	/* Play some music from a URI */
	void TestLoopUri( SLObjectItf sl, const char* path)
	{
	SLEngineItf EngineItf;

	SLresult res;

	SLDataSource audioSource;
	SLDataLocator_URI uri;
	SLDataFormat_MIME mime;

	SLDataSink audioSink;
	SLDataLocator_OutputMix locator_outputmix;

	SLObjectItf player;
	SLPlayItf playItf;
	SLSeekItf seekItf;
	SLPrefetchStatusItf prefetchItf;

	SLObjectItf OutputMix;

	SLboolean required[MAX_NUMBER_INTERFACES];
	SLInterfaceID iidArray[MAX_NUMBER_INTERFACES];

	/* Get the SL Engine Interface which is implicit */
	res = (sl)->GetInterface(sl, SL_IID_ENGINE, (void)&EngineItf);
	CheckErr(res);

	/* Initialize arrays required[] and iidArray[] */
	for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) {
	required[i] = SL_BOOLEAN_FALSE;
	iidArray[i] = SL_IID_NULL;
	}

	required[0] = SL_BOOLEAN_TRUE;
	iidArray[0] = SL_IID_VOLUME;
	// Create Output Mix object to be used by player
	res = (*EngineItf)->CreateOutputMix(EngineItf, &OutputMix, 0,
	iidArray, required); CheckErr(res);

	// Realizing the Output Mix object in synchronous mode.
	res = (*OutputMix)->Realize(OutputMix, SL_BOOLEAN_FALSE);
	CheckErr(res);

	/* Setup the data source structure for the URI */
	uri.locatorType = SL_DATALOCATOR_URI;
	uri.URI = (SLchar*) path;
	mime.formatType = SL_DATAFORMAT_MIME;
	mime.mimeType = (SLchar*)NULL;
	mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED;

	audioSource.pFormat = (void *)&mime;
	audioSource.pLocator = (void *)&uri;

	/* Setup the data sink structure */
	locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
	locator_outputmix.outputMix = OutputMix;
	audioSink.pLocator = (void *)&locator_outputmix;
	audioSink.pFormat = NULL;

	/* Create the audio player */
	required[0] = SL_BOOLEAN_TRUE;
	iidArray[0] = SL_IID_SEEK;
	required[1] = SL_BOOLEAN_TRUE;
	iidArray[1] = SL_IID_PREFETCHSTATUS;
	res = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink,
	MAX_NUMBER_INTERFACES, iidArray, required); CheckErr(res);

	/* Realizing the player in synchronous mode. */
	res = (*player)->Realize(player, SL_BOOLEAN_FALSE); CheckErr(res);
	fprintf(stdout, "URI example: after Realize\n");

	/* Get interfaces */
	res = (player)->GetInterface(player, SL_IID_PLAY, (void)&playItf);
	CheckErr(res);

	res = (player)->GetInterface(player, SL_IID_SEEK, (void)&seekItf);
	CheckErr(res);

	res = (player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void)&prefetchItf);
	CheckErr(res);
	res = (*prefetchItf)->RegisterCallback(prefetchItf, PrefetchEventCallback, NULL);
	CheckErr(res);
	res = (*prefetchItf)->SetCallbackEventsMask(prefetchItf,
	SL_PREFETCHEVENT_FILLLEVELCHANGE \| SL_PREFETCHEVENT_STATUSCHANGE);
	CheckErr(res);

	/* Configure fill level updates every 5 percent */
	(*prefetchItf)->SetFillUpdatePeriod(prefetchItf, 50);

	/* Set up the player callback to get head-at-end events */
	res = (*playItf)->SetCallbackEventsMask(playItf, SL_PLAYEVENT_HEADATEND);
	CheckErr(res);
	res = (*playItf)->RegisterCallback(playItf, PlayEventCallback, NULL);
	CheckErr(res);

	/* Display duration */
	SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
	res = (*playItf)->GetDuration(playItf, &durationInMsec);
	CheckErr(res);
	if (durationInMsec == SL_TIME_UNKNOWN) {
	fprintf(stdout, "Content duration is unknown (before starting to prefetch)\n");
	} else {
	fprintf(stdout, "Content duration is %u ms (before starting to prefetch)\n",
	durationInMsec);
	}

	/* Loop on the whole of the content */
	res = (*seekItf)->SetLoop(seekItf, SL_BOOLEAN_TRUE, 0, SL_TIME_UNKNOWN);
	CheckErr(res);

	/* Play the URI */
	/* first cause the player to prefetch the data */
	res = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED );
	CheckErr(res);

	// wait for prefetch status callback to indicate either sufficient data or error
	pthread_mutex_lock(&mutex);
	while (prefetch_status == SL_PREFETCHSTATUS_UNKNOWN) {
	pthread_cond_wait(&cond, &mutex);
	}
	pthread_mutex_unlock(&mutex);
	if (prefetch_status == SL_PREFETCHSTATUS_ERROR) {
	fprintf(stderr, "Error during prefetch, exiting\n");
	goto destroyRes;
	}

	/* Display duration again, */
	res = (*playItf)->GetDuration(playItf, &durationInMsec);
	CheckErr(res);
	if (durationInMsec == SL_TIME_UNKNOWN) {
	fprintf(stdout, "Content duration is unknown (after prefetch completed)\n");
	} else {
	fprintf(stdout, "Content duration is %u ms (after prefetch completed)\n", durationInMsec);
	}

	/* Start playing */
	fprintf(stdout, "starting to play\n");
	res = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING );
	CheckErr(res);

	/* Wait as long as the duration of the content, times the repetitions,
	* before stopping the loop */
	usleep( (REPETITIONS-1) * durationInMsec * 1100);
	res = (*seekItf)->SetLoop(seekItf, SL_BOOLEAN_FALSE, 0, SL_TIME_UNKNOWN);
	CheckErr(res);
	fprintf(stdout, "As of now, stopped looping (sound shouldn't repeat from now on)\n");
	/* wait some more to make sure it doesn't repeat */
	usleep(durationInMsec * 1000);

	/* Stop playback */
	fprintf(stdout, "stopping playback\n");
	res = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
	CheckErr(res);

	destroyRes:

	/* Destroy the player */
	(*player)->Destroy(player);

	/* Destroy Output Mix object */
	(*OutputMix)->Destroy(OutputMix);
	}

	//-----------------------------------------------------------------
	int main(int argc, char* const argv[])
	{
	SLresult res;
	SLObjectItf sl;

	fprintf(stdout, "OpenSL ES test %s: exercises SLPlayItf, SLSeekItf ", argv[0]);
	fprintf(stdout, "and AudioPlayer with SLDataLocator_URI source / OutputMix sink\n");
	fprintf(stdout, "Plays a sound and loops it %d times.\n\n", REPETITIONS);

	if (argc == 1) {
	fprintf(stdout, "Usage: \n\t%s path \n\t%s url\n", argv[0], argv[0]);
	fprintf(stdout, "Example: \"%s /sdcard/my.mp3\" or \"%s file:///sdcard/my.mp3\"\n",
	argv[0], argv[0]);
	exit(EXIT_FAILURE);
	}

	SLEngineOption EngineOption[] = {
	{(SLuint32) SL_ENGINEOPTION_THREADSAFE,
	(SLuint32) SL_BOOLEAN_TRUE}};

	res = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
	CheckErr(res);
	/* Realizing the SL Engine in synchronous mode. */
	res = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
	CheckErr(res);

	TestLoopUri(sl, argv[1]);

	/* Shutdown OpenSL ES */
	(*sl)->Destroy(sl);

	return EXIT_SUCCESS;
	}