/*
* 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 <fcntl.h>
#include <SLES/OpenSLES.h>
#ifdef ANDROID
#include <SLES/OpenSLES_Android.h>
#endif
#define MAX_NUMBER_INTERFACES 3
#define TIME_S_BETWEEN_VIRT_ON_OFF 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);
}
}
//-----------------------------------------------------------------
/* Play an audio path by opening a file descriptor on that path */
void TestVirtualizerPathFromFD( SLObjectItf sl, const char* path, int16_t virtStrength,
bool alwaysOn)
{
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;
#else
SLDataLocator_URI locatorUri;
#endif
SLDataFormat_MIME mime;
/* Data sinks for the audio player */
SLDataSink audioSink;
SLDataLocator_OutputMix locator_outputmix;
/* Play and PrefetchStatus interfaces for the audio player */
SLPlayItf playItf;
SLPrefetchStatusItf prefetchItf;
SLVirtualizerItf virtItf;
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 SLPrefetchStatusItf interfaces */
/* (SLPlayItf is implicit) */
required[0] = SL_BOOLEAN_TRUE;
iidArray[0] = SL_IID_PREFETCHSTATUS;
required[1] = SL_BOOLEAN_TRUE;
iidArray[1] = SL_IID_VIRTUALIZER;
#ifdef ANDROID
/* Setup the data source structure for the URI */
locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD;
int fd = open(path, O_RDONLY);
if (fd == -1) {
ExitOnError(SL_RESULT_RESOURCE_ERROR);
}
locatorFd.fd = (SLint32) fd;
locatorFd.length = SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE;
locatorFd.offset = 0;
#else
locatorUri.locatorType = SL_DATALOCATOR_URI;
locatorUri.URI = (SLchar *) path;
#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;
#ifdef ANDROID
audioSource.pLocator = (void*)&locatorFd;
#else
audioSource.pLocator = (void*)&locatorUri;
#endif
/* Create the audio player */
result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 2,
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 SLAndroidStreamTypeItf 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_VIRTUALIZER, (void*)&virtItf);
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);
ExitOnError(result);
}
/* Get duration */
SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
result = (*playItf)->GetDuration(playItf, &durationInMsec);
ExitOnError(result);
if (durationInMsec == SL_TIME_UNKNOWN) {
durationInMsec = 5000;
}
/* Start playback */
fprintf(stdout, "Starting to play\n");
result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING );
ExitOnError(result);
/* Configure Virtualizer */
SLboolean strengthSupported = SL_BOOLEAN_FALSE;
result = (*virtItf)->IsStrengthSupported(virtItf, &strengthSupported);
ExitOnError(result);
if (SL_BOOLEAN_FALSE == strengthSupported) {
fprintf(stdout, "Virtualizer strength is not supported on this platform. Too bad!\n");
} else {
fprintf(stdout, "Virtualizer strength is supported, setting strength to %d\n",
virtStrength);
result = (*virtItf)->SetStrength(virtItf, virtStrength);
ExitOnError(result);
}
SLpermille strength = 0;
result = (*virtItf)->GetRoundedStrength(virtItf, &strength);
ExitOnError(result);
fprintf(stdout, "Rounded strength of virt = %d\n", strength);
/* Switch Virtualizer on/off every TIME_S_BETWEEN_VIRT_ON_OFF seconds unless always on */
SLboolean previousEnabled = SL_BOOLEAN_FALSE;
for(unsigned int j=0 ; j<(durationInMsec/(1000*TIME_S_BETWEEN_VIRT_ON_OFF)) ; j++) {
SLboolean enabled;
result = (*virtItf)->IsEnabled(virtItf, &enabled);
ExitOnError(result);
enabled = alwaysOn || !enabled;
if (enabled != previousEnabled) {
result = (*virtItf)->SetEnabled(virtItf, enabled);
ExitOnError(result);
previousEnabled = enabled;
if (SL_BOOLEAN_TRUE == enabled) {
fprintf(stdout, "Virtualizer on\n");
} else {
fprintf(stdout, "Virtualizer off\n");
}
}
usleep(TIME_S_BETWEEN_VIRT_ON_OFF * 1000 * 1000);
}
/* Make sure player is stopped */
fprintf(stdout, "Stopping playback\n");
result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
ExitOnError(result);
/* Destroy the player */
(*player)->Destroy(player);
/* Destroy Output Mix object */
(*outputMix)->Destroy(outputMix);
#ifdef ANDROID
close(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 SLVirtualizerItf ", programName);
fprintf(stdout, "and AudioPlayer with SLDataLocator_AndroidFD source / OutputMix sink\n");
fprintf(stdout, "Plays the sound file designated by the given path, ");
fprintf(stdout, "and applies a virtualization effect of the specified strength,\n");
fprintf(stdout, "where strength is an integer value between 0 and 1000.\n");
fprintf(stdout, "Every %d seconds, the Virtualizer will be turned on and off,\n",
TIME_S_BETWEEN_VIRT_ON_OFF);
fprintf(stdout, "unless the --always-on option is specified before the path.\n");
bool alwaysOn = false;
if (argc >= 2 && !strcmp(argv[1], "--always-on")) {
alwaysOn = true;
--argc;
++argv;
}
if (argc < 3) {
fprintf(stdout, "Usage: \t%s [--always-on] path virtualization_strength\n", programName);
fprintf(stdout, "Example: \"%s /sdcard/my.mp3 1000\" \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 argv[2], the virtualizer strength, is between 0 and 1000
TestVirtualizerPathFromFD(sl, argv[1], (int16_t)atoi(argv[2]), alwaysOn);
/* Shutdown OpenSL ES */
(*sl)->Destroy(sl);
return EXIT_SUCCESS;
}