297 lines
10 KiB
C++
297 lines
10 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/time.h>
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#include <fcntl.h>
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#include <SLES/OpenSLES.h>
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#ifdef ANDROID
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#include <SLES/OpenSLES_Android.h>
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#endif
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#define MAX_NUMBER_INTERFACES 3
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#define TIME_S_BETWEEN_VIRT_ON_OFF 3
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//-----------------------------------------------------------------
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/* Exits the application if an error is encountered */
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#define ExitOnError(x) ExitOnErrorFunc(x,__LINE__)
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void ExitOnErrorFunc( SLresult result , int line)
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{
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if (SL_RESULT_SUCCESS != result) {
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fprintf(stderr, "%u error code encountered at line %d, exiting\n", result, line);
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exit(EXIT_FAILURE);
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}
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}
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//-----------------------------------------------------------------
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/* Play an audio path by opening a file descriptor on that path */
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void TestVirtualizerPathFromFD( SLObjectItf sl, const char* path, int16_t virtStrength,
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bool alwaysOn)
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{
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SLresult result;
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SLEngineItf EngineItf;
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/* Objects this application uses: one player and an ouput mix */
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SLObjectItf player, outputMix;
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/* Source of audio data to play */
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SLDataSource audioSource;
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#ifdef ANDROID
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SLDataLocator_AndroidFD locatorFd;
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#else
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SLDataLocator_URI locatorUri;
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#endif
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SLDataFormat_MIME mime;
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/* Data sinks for the audio player */
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SLDataSink audioSink;
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SLDataLocator_OutputMix locator_outputmix;
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/* Play and PrefetchStatus interfaces for the audio player */
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SLPlayItf playItf;
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SLPrefetchStatusItf prefetchItf;
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SLVirtualizerItf virtItf;
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SLboolean required[MAX_NUMBER_INTERFACES];
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SLInterfaceID iidArray[MAX_NUMBER_INTERFACES];
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/* Get the SL Engine Interface which is implicit */
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result = (*sl)->GetInterface(sl, SL_IID_ENGINE, (void*)&EngineItf);
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ExitOnError(result);
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/* Initialize arrays required[] and iidArray[] */
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for (int i=0 ; i < MAX_NUMBER_INTERFACES ; i++) {
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required[i] = SL_BOOLEAN_FALSE;
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iidArray[i] = SL_IID_NULL;
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}
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/* ------------------------------------------------------ */
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/* Configuration of the output mix */
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/* Create Output Mix object to be used by the player */
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result = (*EngineItf)->CreateOutputMix(EngineItf, &outputMix, 0, iidArray, required);
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ExitOnError(result);
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/* Realize the Output Mix object in synchronous mode */
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result = (*outputMix)->Realize(outputMix, SL_BOOLEAN_FALSE);
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ExitOnError(result);
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/* Setup the data sink structure */
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locator_outputmix.locatorType = SL_DATALOCATOR_OUTPUTMIX;
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locator_outputmix.outputMix = outputMix;
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audioSink.pLocator = (void*)&locator_outputmix;
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audioSink.pFormat = NULL;
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/* ------------------------------------------------------ */
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/* Configuration of the player */
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/* Set arrays required[] and iidArray[] for SLPrefetchStatusItf interfaces */
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/* (SLPlayItf is implicit) */
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required[0] = SL_BOOLEAN_TRUE;
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iidArray[0] = SL_IID_PREFETCHSTATUS;
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required[1] = SL_BOOLEAN_TRUE;
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iidArray[1] = SL_IID_VIRTUALIZER;
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#ifdef ANDROID
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/* Setup the data source structure for the URI */
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locatorFd.locatorType = SL_DATALOCATOR_ANDROIDFD;
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int fd = open(path, O_RDONLY);
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if (fd == -1) {
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ExitOnError(SL_RESULT_RESOURCE_ERROR);
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}
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locatorFd.fd = (SLint32) fd;
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locatorFd.length = SL_DATALOCATOR_ANDROIDFD_USE_FILE_SIZE;
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locatorFd.offset = 0;
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#else
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locatorUri.locatorType = SL_DATALOCATOR_URI;
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locatorUri.URI = (SLchar *) path;
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#endif
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mime.formatType = SL_DATAFORMAT_MIME;
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/* this is how ignored mime information is specified, according to OpenSL ES spec
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* in 9.1.6 SLDataFormat_MIME and 8.23 SLMetadataTraversalItf GetChildInfo */
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mime.mimeType = (SLchar*)NULL;
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mime.containerType = SL_CONTAINERTYPE_UNSPECIFIED;
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audioSource.pFormat = (void*)&mime;
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#ifdef ANDROID
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audioSource.pLocator = (void*)&locatorFd;
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#else
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audioSource.pLocator = (void*)&locatorUri;
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#endif
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/* Create the audio player */
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result = (*EngineItf)->CreateAudioPlayer(EngineItf, &player, &audioSource, &audioSink, 2,
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iidArray, required);
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ExitOnError(result);
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/* Realize the player in synchronous mode. */
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result = (*player)->Realize(player, SL_BOOLEAN_FALSE); ExitOnError(result);
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fprintf(stdout, "URI example: after Realize\n");
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/* Get the SLPlayItf, SLPrefetchStatusItf and SLAndroidStreamTypeItf interfaces for the player*/
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result = (*player)->GetInterface(player, SL_IID_PLAY, (void*)&playItf);
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ExitOnError(result);
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result = (*player)->GetInterface(player, SL_IID_PREFETCHSTATUS, (void*)&prefetchItf);
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ExitOnError(result);
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result = (*player)->GetInterface(player, SL_IID_VIRTUALIZER, (void*)&virtItf);
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ExitOnError(result);
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fprintf(stdout, "Player configured\n");
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/* ------------------------------------------------------ */
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/* Playback and test */
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/* Start the data prefetching by setting the player to the paused state */
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result = (*playItf)->SetPlayState( playItf, SL_PLAYSTATE_PAUSED );
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ExitOnError(result);
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/* Wait until there's data to play */
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SLuint32 prefetchStatus = SL_PREFETCHSTATUS_UNDERFLOW;
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while (prefetchStatus != SL_PREFETCHSTATUS_SUFFICIENTDATA) {
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usleep(100 * 1000);
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(*prefetchItf)->GetPrefetchStatus(prefetchItf, &prefetchStatus);
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ExitOnError(result);
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}
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/* Get duration */
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SLmillisecond durationInMsec = SL_TIME_UNKNOWN;
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result = (*playItf)->GetDuration(playItf, &durationInMsec);
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ExitOnError(result);
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if (durationInMsec == SL_TIME_UNKNOWN) {
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durationInMsec = 5000;
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}
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/* Start playback */
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fprintf(stdout, "Starting to play\n");
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result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_PLAYING );
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ExitOnError(result);
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/* Configure Virtualizer */
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SLboolean strengthSupported = SL_BOOLEAN_FALSE;
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result = (*virtItf)->IsStrengthSupported(virtItf, &strengthSupported);
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ExitOnError(result);
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if (SL_BOOLEAN_FALSE == strengthSupported) {
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fprintf(stdout, "Virtualizer strength is not supported on this platform. Too bad!\n");
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} else {
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fprintf(stdout, "Virtualizer strength is supported, setting strength to %d\n",
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virtStrength);
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result = (*virtItf)->SetStrength(virtItf, virtStrength);
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ExitOnError(result);
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}
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SLpermille strength = 0;
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result = (*virtItf)->GetRoundedStrength(virtItf, &strength);
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ExitOnError(result);
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fprintf(stdout, "Rounded strength of virt = %d\n", strength);
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/* Switch Virtualizer on/off every TIME_S_BETWEEN_VIRT_ON_OFF seconds unless always on */
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SLboolean previousEnabled = SL_BOOLEAN_FALSE;
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for(unsigned int j=0 ; j<(durationInMsec/(1000*TIME_S_BETWEEN_VIRT_ON_OFF)) ; j++) {
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SLboolean enabled;
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result = (*virtItf)->IsEnabled(virtItf, &enabled);
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ExitOnError(result);
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enabled = alwaysOn || !enabled;
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if (enabled != previousEnabled) {
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result = (*virtItf)->SetEnabled(virtItf, enabled);
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ExitOnError(result);
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previousEnabled = enabled;
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if (SL_BOOLEAN_TRUE == enabled) {
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fprintf(stdout, "Virtualizer on\n");
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} else {
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fprintf(stdout, "Virtualizer off\n");
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}
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}
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usleep(TIME_S_BETWEEN_VIRT_ON_OFF * 1000 * 1000);
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}
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/* Make sure player is stopped */
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fprintf(stdout, "Stopping playback\n");
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result = (*playItf)->SetPlayState(playItf, SL_PLAYSTATE_STOPPED);
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ExitOnError(result);
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/* Destroy the player */
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(*player)->Destroy(player);
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/* Destroy Output Mix object */
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(*outputMix)->Destroy(outputMix);
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#ifdef ANDROID
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close(fd);
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#endif
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}
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//-----------------------------------------------------------------
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int main(int argc, char* const argv[])
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{
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const char *programName = argv[0];
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SLresult result;
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SLObjectItf sl;
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fprintf(stdout, "OpenSL ES test %s: exercises SLVirtualizerItf ", programName);
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fprintf(stdout, "and AudioPlayer with SLDataLocator_AndroidFD source / OutputMix sink\n");
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fprintf(stdout, "Plays the sound file designated by the given path, ");
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fprintf(stdout, "and applies a virtualization effect of the specified strength,\n");
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fprintf(stdout, "where strength is an integer value between 0 and 1000.\n");
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fprintf(stdout, "Every %d seconds, the Virtualizer will be turned on and off,\n",
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TIME_S_BETWEEN_VIRT_ON_OFF);
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fprintf(stdout, "unless the --always-on option is specified before the path.\n");
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bool alwaysOn = false;
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if (argc >= 2 && !strcmp(argv[1], "--always-on")) {
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alwaysOn = true;
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--argc;
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++argv;
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}
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if (argc < 3) {
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fprintf(stdout, "Usage: \t%s [--always-on] path virtualization_strength\n", programName);
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fprintf(stdout, "Example: \"%s /sdcard/my.mp3 1000\" \n", programName);
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exit(EXIT_FAILURE);
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}
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SLEngineOption EngineOption[] = {
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{(SLuint32) SL_ENGINEOPTION_THREADSAFE, (SLuint32) SL_BOOLEAN_TRUE}
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};
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result = slCreateEngine( &sl, 1, EngineOption, 0, NULL, NULL);
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ExitOnError(result);
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/* Realizing the SL Engine in synchronous mode. */
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result = (*sl)->Realize(sl, SL_BOOLEAN_FALSE);
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ExitOnError(result);
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// intentionally not checking that argv[2], the virtualizer strength, is between 0 and 1000
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TestVirtualizerPathFromFD(sl, argv[1], (int16_t)atoi(argv[2]), alwaysOn);
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/* Shutdown OpenSL ES */
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(*sl)->Destroy(sl);
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return EXIT_SUCCESS;
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}
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