/*
* 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 <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/time.h>
#include <fcntl.h>
#include <SLES/OpenSLES.h>
#ifdef ANDROID
#include <SLES/OpenSLES_Android.h>
#endif
#define MAX_NUMBER_INTERFACES 4
#define TIME_S_BETWEEN_SETTING_CHANGE 3
//-----------------------------------------------------------------
/* 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(stderr, "%u error code encountered at line %d, exiting\n", result, line);
exit(EXIT_FAILURE);
}
}
// Prefetch status callback
#define PREFETCHEVENT_ERROR_CANDIDATE \
(SL_PREFETCHEVENT_STATUSCHANGE | SL_PREFETCHEVENT_FILLLEVELCHANGE)
SLboolean errorInPrefetchCallback = SL_BOOLEAN_FALSE;
void prefetch_callback(SLPrefetchStatusItf caller, void *context, SLuint32 event)
{
SLresult result;
assert(context == NULL);
SLpermille level;
result = (*caller)->GetFillLevel(caller, &level);
ExitOnError(result);
SLuint32 status;
result = (*caller)->GetPrefetchStatus(caller, &status);
ExitOnError(result);
if ((PREFETCHEVENT_ERROR_CANDIDATE == (event & PREFETCHEVENT_ERROR_CANDIDATE))
&& (level == 0) && (status == SL_PREFETCHSTATUS_UNDERFLOW)) {
errorInPrefetchCallback = SL_BOOLEAN_TRUE;
}
}
//-----------------------------------------------------------------
/* Play an audio path and feed a global reverb */
void TestSendToPresetReverb( SLObjectItf sl, const char* path, int preset, SLmillibel directLevel,
SLmillibel sendLevel, bool alwaysOn, bool useFd, bool loop)
{
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;
#ifdef ANDROID
SLDataLocator_AndroidFD locatorFd;
#endif
SLDataLocator_URI locatorUri;
SLDataFormat_MIME mime;
/* Data sinks for the audio player */
SLDataSink audioSink;
SLDataLocator_OutputMix locator_outputmix;
/* Interfaces for the audio player */
SLPlayItf playItf;
SLPrefetchStatusItf prefetchItf;
SLEffectSendItf effectSendItf;
SLSeekItf seekItf;
/* Interface for the output mix */
SLPresetReverbItf reverbItf;
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 */
/* Set arrays required[] and iidArray[] for required interfaces */
required[0] = SL_BOOLEAN_TRUE;
iidArray[0] = SL_IID_PRESETREVERB;
/* Create Output Mix object to be used by the player */
result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 1, iidArray, required);
ExitOnError(result);
/* Realize the Output Mix object in synchronous mode */
result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE);
ExitOnError(result);
/* Get the SLPresetReverbItf for the output mix */
result = (*outputMix)->GetInterface(outputMix, SL_IID_PRESETREVERB, (void*)&reverbItf);
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;
/* Select the reverb preset */
fprintf(stdout, "\nUsing preset ");
switch(preset) {
case SL_REVERBPRESET_NONE:
fprintf(stdout, "SL_REVERBPRESET_NONE, don't expect to hear reverb\n");
break;
case SL_REVERBPRESET_SMALLROOM: fprintf(stdout, "SL_REVERBPRESET_SMALLROOM\n"); break;
case SL_REVERBPRESET_MEDIUMROOM: fprintf(stdout, "SL_REVERBPRESET_MEDIUMROOM\n"); break;
case SL_REVERBPRESET_LARGEROOM: fprintf(stdout, "SL_REVERBPRESET_LARGEROOM\n"); break;
case SL_REVERBPRESET_MEDIUMHALL: fprintf(stdout, "SL_REVERBPRESET_MEDIUMHALL\n"); break;
case SL_REVERBPRESET_LARGEHALL: fprintf(stdout, "SL_REVERBPRESET_LARGEHALL\n"); break;
case SL_REVERBPRESET_PLATE: fprintf(stdout, "SL_REVERBPRESET_PLATE\n"); break;
default:
fprintf(stdout, "unknown, use at your own risk\n"); break;
}
result = (*reverbItf)->SetPreset(reverbItf, preset);
ExitOnError(result);
/* ------------------------------------------------------ */
/* Configuration of the player */
/* Set arrays required[] and iidArray[] for required interfaces */
/* (SLPlayItf is implicit) */
required[0] = SL_BOOLEAN_TRUE;
iidArray[0] = SL_IID_PREFETCHSTATUS;
required[1] = SL_BOOLEAN_TRUE;
iidArray[1] = SL_IID_EFFECTSEND;
required[2] = SL_BOOLEAN_TRUE;
iidArray[2] = SL_IID_SEEK;
locatorUri.locatorType = SL_DATALOCATOR_URI;
locatorUri.URI = (SLchar *) path;
audioSource.pLocator = (void*)&locatorUri;
if (useFd) {
#ifdef ANDROID
/* Setup the data source structure for the URI */
locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD;
int fd = open(path, O_RDONLY);
if (fd == -1) {
perror(path);
exit(EXIT_FAILURE);
}
locatorFd.fd = (SLint32) fd;
locatorFd.length = SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE;
locatorFd.offset = 0;
audioSource.pLocator = (void*)&locatorFd;
#else
fprintf(stderr, "option --fd is not supported\n");
#endif
}
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;
/* Create the audio player */
result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 3,
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 SLEffectSendItf 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 = (*prefetchItf)->RegisterCallback(prefetchItf, prefetch_callback, NULL);
ExitOnError(result);
result = (*prefetchItf)->SetCallbackEventsMask(prefetchItf,
SL_PREFETCHEVENT_STATUSCHANGE | SL_PREFETCHEVENT_FILLLEVELCHANGE);
ExitOnError(result);
result = (*player)->GetInterface(player, SL_IID_EFFECTSEND, (void*)&effectSendItf);
ExitOnError(result);
result = (*player)->GetInterface(player, SL_IID_SEEK, (void*)&seekItf);
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) {
if (errorInPrefetchCallback) {
fprintf(stderr, "Error during prefetch, exiting\n");
exit(EXIT_FAILURE);
}
usleep(100 * 1000);
(*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
ExitOnError(result);
}
/* Get duration */
SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
result = (*playItf)->GetDuration(playItf, &durationInMsec);
ExitOnError(result);
if (durationInMsec == SL_TIME_UNKNOWN) {
printf("Duration unknown, assuming 10 seconds\n");
durationInMsec = 10000;
} else {
printf("Duration is %.1f seconds\n", durationInMsec / 1000.0);
}
/* Feed the output mix' reverb from the audio player using the given send level */
result = (*effectSendItf)->EnableEffectSend(effectSendItf, reverbItf, SL_BOOLEAN_TRUE,
sendLevel);
ExitOnError(result);
result = (*effectSendItf)->SetDirectLevel(effectSendItf, directLevel);
ExitOnError(result);
fprintf(stdout, "Set direct level to %dmB\n", directLevel);
result = (*effectSendItf)->SetSendLevel(effectSendItf, reverbItf, sendLevel);
ExitOnError(result);
fprintf(stdout, "Set send level to %dmB\n", sendLevel);
/* Enable looping */
if (loop) {
result = (*seekItf)->SetLoop(seekItf, SL_BOOLEAN_TRUE, (SLmillisecond) 0, SL_TIME_UNKNOWN);
ExitOnError(result);
}
/* Start playback */
result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PLAYING );
ExitOnError(result);
/* Disable preset reverb every TIME_S_BETWEEN_SETTING_CHANGE seconds unless always on */
SLboolean previousEnabled = SL_BOOLEAN_FALSE;
SLuint32 playState;
for (;;) {
result = (*playItf)->GetPlayState(playItf, &playState);
ExitOnError(result);
if (playState != SL_PLAYSTATE_PLAYING)
break;
SLboolean enabled;
enabled = alwaysOn || !previousEnabled;
if (enabled != previousEnabled) {
result = (*reverbItf)->SetPreset(reverbItf, enabled ? preset : SL_REVERBPRESET_NONE);
fprintf(stdout, "SetPreset(%d)=%d\n", enabled ? preset : SL_REVERBPRESET_NONE, result);
ExitOnError(result);
previousEnabled = enabled;
if (enabled) {
fprintf(stdout, "Reverb on\n");
} else {
fprintf(stdout, "Reverb off\n");
}
}
usleep(TIME_S_BETWEEN_SETTING_CHANGE * 1000 * 1000);
}
/* Make sure player is stopped */
assert(playState == SL_PLAYSTATE_STOPPED);
#if 0
fprintf(stdout, "Stopping playback\n");
result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
ExitOnError(result);
#endif
/* Destroy the player */
(*player)->Destroy(player);
/* Destroy Output Mix object */
(*outputMix)->Destroy(outputMix);
#ifdef ANDROID
if (useFd)
close(locatorFd.fd);
#endif
}
//-----------------------------------------------------------------
int main(int argc, char* const argv[])
{
const char *programName = argv[0];
SLresult result;
SLObjectItf sl;
fprintf(stdout, "OpenSL ES test %s: exercises SLEffectSendItf ", programName);
fprintf(stdout, "on AudioPlayer and SLPresetReverbItf on OutputMix.\n");
fprintf(stdout, "Plays the sound file designated by the given path, ");
fprintf(stdout, "and sends a specified amount of energy to a global reverb\n");
fprintf(stdout, "(sendLevel in mB), with a given direct level (in mB).\n");
fprintf(stdout, "Every %d seconds, the reverb is turned on and off,\n",
TIME_S_BETWEEN_SETTING_CHANGE);
fprintf(stdout, "unless the --always-on option is specified before the path.\n");
bool alwaysOn = false;
bool useFd = false;
bool loop = false;
int i;
for (i = 1; i < argc; ++i) {
const char *arg = argv[i];
if (arg[0] != '-')
break;
if (!strcmp(arg, "--always-on")) {
alwaysOn = true;
} else if (!strcmp(arg, "--fd")) {
useFd = true;
} else if (!strcmp(arg, "--loop")) {
loop = true;
} else {
fprintf(stderr, "unknown option %s ignored\n", arg);
}
}
if (argc - i != 4) {
fprintf(stdout, "Usage: \t%s [--always-on] [--fd] [--loop] path preset directLevel "
"sendLevel\n", programName);
fprintf(stdout, "Example: \"%s /sdcard/my.mp3 6 -2000 0\" \n", programName);
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);
// intentionally not checking that levels are of correct value
TestSendToPresetReverb(sl, argv[i], atoi(argv[i+1]), (SLmillibel)atoi(argv[i+2]),
(SLmillibel)atoi(argv[i+3]), alwaysOn, useFd, loop);
/* Shutdown OpenSL ES */
(*sl)->Destroy(sl);
return EXIT_SUCCESS;
}