tests/mimeUri/slesTestSlowDownUri.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.
  */

 #define LOG_NDEBUG 0
 #define LOG_TAG "slesTestSlowDownUri"

 #ifdef ANDROID
 #include <utils/Log.h>
 #else
 #define LOGV printf
 #endif
 #include <getopt.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 3

 #define REPETITIONS 4  // 4 repetitions, but will stop the looping before the end

 #define INITIAL_RATE 2000 // 2x normal playback speed

 //-----------------------------------------------------------------
 //* 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, "%lu error code encountered at line %d, exiting\n", result, line);
         exit(1);
     }
 }

 //-----------------------------------------------------------------
 /* 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 \n");
         /* slow playback down by 2x for next loop,  if possible */
         SLpermille minRate, maxRate, stepSize, rate = 1000;
         SLuint32 capa;
         SLPlaybackRateItf* pRateItf = (SLPlaybackRateItf*)pContext;
         SLresult res = (**pRateItf)->GetRate(*pRateItf, &rate); CheckErr(res);
         res = (**pRateItf)->GetRateRange(*pRateItf, 0, &minRate, &maxRate, &stepSize, &capa);
         CheckErr(res);
         fprintf(stdout, "old rate = %d, minRate=%d, maxRate=%d\n", rate, minRate, maxRate);
         rate /= 2;
         if (rate < minRate) {
             rate = minRate;
         }
         fprintf(stdout, "new rate = %d\n", rate);
         res = (**pRateItf)->SetRate(*pRateItf, rate); CheckErr(res);
     }
     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");
 }

 //-----------------------------------------------------------------
 /* PrefetchStatusItf callback for an audio player */
 void PrefetchEventCallback( SLPrefetchStatusItf caller,  void *pContext, SLuint32 event)
 {
     SLpermille level = 0;
     (*caller)->GetFillLevel(caller, &level);
     SLuint32 status;
     //fprintf(stdout, "\t\tPrefetchEventCallback: received event %lu\n", event);
     (*caller)->GetPrefetchStatus(caller, &status);
     if ((event & (SL_PREFETCHEVENT_STATUSCHANGE|SL_PREFETCHEVENT_FILLLEVELCHANGE))
             && (level == 0) && (status == SL_PREFETCHSTATUS_UNDERFLOW)) {
         fprintf(stdout, "\t\tPrefetchEventCallback: Error while prefetching data, exiting\n");
         //exit(1);
     }
     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 = %lu\n", status);
     }

 }


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

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

     SLint32                    numOutputs = 0;
     SLuint32                   deviceID = 0;

     SLresult                   res;

     SLDataSource               audioSource;
     SLDataLocator_URI          uri;
     SLDataFormat_MIME          mime;

     SLDataSink                 audioSink;
     SLDataLocator_OutputMix    locator_outputmix;

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

     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, 1,
             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;
     required[2] = SL_BOOLEAN_TRUE;
     iidArray[2] = SL_IID_PLAYBACKRATE;
     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_PLAYBACKRATE, (void*)&rateItf);  CheckErr(res);

     res = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf);
     CheckErr(res);
     res = (*prefetchItf)->RegisterCallback(prefetchItf, PrefetchEventCallback, &prefetchItf);
     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);  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 %lu 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);

     /* Set up marker and position callbacks */
     res = (*playItf)->RegisterCallback(playItf, PlayEventCallback, &rateItf);  CheckErr(res);
     res = (*playItf)->SetCallbackEventsMask(playItf,
             SL_PLAYEVENT_HEADATEND | SL_PLAYEVENT_HEADATMARKER | SL_PLAYEVENT_HEADATNEWPOS);
     res = (*playItf)->SetMarkerPosition(playItf, 1500); CheckErr(res);
     res = (*playItf)->SetPositionUpdatePeriod(playItf, 500); CheckErr(res);

     /* Change the playback rate before playback */
     res = (*rateItf)->SetRate(rateItf, INITIAL_RATE);  CheckErr(res);

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

     /*     wait until there's data to play */
     SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
     SLuint32 timeOutIndex = 100; // 10s
     while ((prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) && (timeOutIndex > 0)) {
         usleep(100 * 1000);
         (*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
         timeOutIndex--;
     }

     if (timeOutIndex == 0) {
         fprintf(stderr, "\nWe\'re done waiting, failed to prefetch data in time, 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 %lu ms (after prefetch completed)\n", durationInMsec);
     }

     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[])
 {
     LOGV("Starting slesTestSlowDownUri\n");

     SLresult    res;
     SLObjectItf sl;

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

     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(1);
     }

     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);

     TestSlowDownUri(sl, argv[1]);

     /* Shutdown OpenSL ES */
     (*sl)->Destroy(sl);
     exit(0);

     return 0;
 }
	/*
	* 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.
	*/

	#define LOG_NDEBUG 0
	#define LOG_TAG "slesTestSlowDownUri"

	#ifdef ANDROID
	#include <utils/Log.h>
	#else
	#define LOGV printf
	#endif
	#include <getopt.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 3

	#define REPETITIONS 4 // 4 repetitions, but will stop the looping before the end

	#define INITIAL_RATE 2000 // 2x normal playback speed

	//-----------------------------------------------------------------
	//* 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, "%lu error code encountered at line %d, exiting\n", result, line);
	exit(1);
	}
	}

	//-----------------------------------------------------------------
	/* 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 \n");
	/* slow playback down by 2x for next loop, if possible */
	SLpermille minRate, maxRate, stepSize, rate = 1000;
	SLuint32 capa;
	SLPlaybackRateItf* pRateItf = (SLPlaybackRateItf*)pContext;
	SLresult res = (*pRateItf)->GetRate(pRateItf, &rate); CheckErr(res);
	res = (*pRateItf)->GetRateRange(pRateItf, 0, &minRate, &maxRate, &stepSize, &capa);
	CheckErr(res);
	fprintf(stdout, "old rate = %d, minRate=%d, maxRate=%d\n", rate, minRate, maxRate);
	rate /= 2;
	if (rate < minRate) {
	rate = minRate;
	}
	fprintf(stdout, "new rate = %d\n", rate);
	res = (*pRateItf)->SetRate(pRateItf, rate); CheckErr(res);
	}
	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");
	}

	//-----------------------------------------------------------------
	/* PrefetchStatusItf callback for an audio player */
	void PrefetchEventCallback( SLPrefetchStatusItf caller, void *pContext, SLuint32 event)
	{
	SLpermille level = 0;
	(*caller)->GetFillLevel(caller, &level);
	SLuint32 status;
	//fprintf(stdout, "\t\tPrefetchEventCallback: received event %lu\n", event);
	(*caller)->GetPrefetchStatus(caller, &status);
	if ((event & (SL_PREFETCHEVENT_STATUSCHANGE\|SL_PREFETCHEVENT_FILLLEVELCHANGE))
	&& (level == 0) && (status == SL_PREFETCHSTATUS_UNDERFLOW)) {
	fprintf(stdout, "\t\tPrefetchEventCallback: Error while prefetching data, exiting\n");
	//exit(1);
	}
	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 = %lu\n", status);
	}

	}


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

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

	SLint32 numOutputs = 0;
	SLuint32 deviceID = 0;

	SLresult res;

	SLDataSource audioSource;
	SLDataLocator_URI uri;
	SLDataFormat_MIME mime;

	SLDataSink audioSink;
	SLDataLocator_OutputMix locator_outputmix;

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

	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, 1,
	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;
	required[2] = SL_BOOLEAN_TRUE;
	iidArray[2] = SL_IID_PLAYBACKRATE;
	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_PLAYBACKRATE, (void)&rateItf); CheckErr(res);

	res = (player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void)&prefetchItf);
	CheckErr(res);
	res = (*prefetchItf)->RegisterCallback(prefetchItf, PrefetchEventCallback, &prefetchItf);
	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); 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 %lu 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);

	/* Set up marker and position callbacks */
	res = (*playItf)->RegisterCallback(playItf, PlayEventCallback, &rateItf); CheckErr(res);
	res = (*playItf)->SetCallbackEventsMask(playItf,
	SL_PLAYEVENT_HEADATEND \| SL_PLAYEVENT_HEADATMARKER \| SL_PLAYEVENT_HEADATNEWPOS);
	res = (*playItf)->SetMarkerPosition(playItf, 1500); CheckErr(res);
	res = (*playItf)->SetPositionUpdatePeriod(playItf, 500); CheckErr(res);

	/* Change the playback rate before playback */
	res = (*rateItf)->SetRate(rateItf, INITIAL_RATE); CheckErr(res);

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

	/* wait until there's data to play */
	SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
	SLuint32 timeOutIndex = 100; // 10s
	while ((prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) && (timeOutIndex > 0)) {
	usleep(100 * 1000);
	(*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
	timeOutIndex--;
	}

	if (timeOutIndex == 0) {
	fprintf(stderr, "\nWe\'re done waiting, failed to prefetch data in time, 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 %lu ms (after prefetch completed)\n", durationInMsec);
	}

	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[])
	{
	LOGV("Starting slesTestSlowDownUri\n");

	SLresult res;
	SLObjectItf sl;

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

	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(1);
	}

	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);

	TestSlowDownUri(sl, argv[1]);

	/* Shutdown OpenSL ES */
	(*sl)->Destroy(sl);
	exit(0);

	return 0;
	}