-#include <assert.h>
-#include <getopt.h>
-#include <pthread.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <SLES/OpenSLES.h>
-#include <SLES/OpenSLES_Android.h>
-
-class AudioPlayer {
- public:
- AudioPlayer();
- ~AudioPlayer();
- void play(char const* uri);
- /**
- * This allows setting the stream type (default:SL_ANDROID_STREAM_MEDIA):
- * SL_ANDROID_STREAM_ALARM - same as android.media.AudioManager.STREAM_ALARM
- * SL_ANDROID_STREAM_MEDIA - same as android.media.AudioManager.STREAM_MUSIC
- * SL_ANDROID_STREAM_NOTIFICATION - same as android.media.AudioManager.STREAM_NOTIFICATION
- * SL_ANDROID_STREAM_RING - same as android.media.AudioManager.STREAM_RING
- * SL_ANDROID_STREAM_SYSTEM - same as android.media.AudioManager.STREAM_SYSTEM
- * SL_ANDROID_STREAM_VOICE - same as android.media.AudioManager.STREAM_VOICE_CALL
- */
- void setStreamType(SLint32 streamType) { this->androidStreamType = streamType; }
- private:
- SLObjectItf mSlEngineObject{NULL};
- SLEngineItf mSlEngineInterface{NULL};
- SLObjectItf mSlOutputMixObject{NULL};
- SLint32 androidStreamType{SL_ANDROID_STREAM_MEDIA};
-};
-
-class MutexWithCondition {
- public:
- MutexWithCondition() {
- pthread_mutex_init(&mutex, NULL);
- pthread_cond_init(&condition, NULL);
- pthread_mutex_lock(&mutex);
- }
- ~MutexWithCondition() { pthread_mutex_unlock(&mutex); }
- void waitFor() { while (!occurred) pthread_cond_wait(&condition, &mutex); }
- /** From waking thread. */
- void lockAndSignal() {
- pthread_mutex_lock(&mutex);
- occurred = true;
- pthread_cond_signal(&condition);
- pthread_mutex_unlock(&mutex);
- }
- private:
- volatile bool occurred{false};
- pthread_mutex_t mutex;
- pthread_cond_t condition;
-};
-
-AudioPlayer::AudioPlayer() {
- // "OpenSL ES for Android is designed for multi-threaded applications, and is thread-safe.
- // OpenSL ES for Android supports a single engine per application, and up to 32 objects.
- // Available device memory and CPU may further restrict the usable number of objects.
- // slCreateEngine recognizes, but ignores, these engine options: SL_ENGINEOPTION_THREADSAFE SL_ENGINEOPTION_LOSSOFCONTROL"
- SLresult result = slCreateEngine(&mSlEngineObject,
- /*numOptions=*/0, /*options=*/NULL,
- /*numWantedInterfaces=*/0, /*wantedInterfaces=*/NULL, /*wantedInterfacesRequired=*/NULL);
- assert(SL_RESULT_SUCCESS == result);
-
- result = (*mSlEngineObject)->Realize(mSlEngineObject, SL_BOOLEAN_FALSE);
- assert(SL_RESULT_SUCCESS == result);
-
- result = (*mSlEngineObject)->GetInterface(mSlEngineObject, SL_IID_ENGINE, &mSlEngineInterface);
- assert(SL_RESULT_SUCCESS == result);
-
- SLuint32 const numWantedInterfaces = 0;
- result = (*mSlEngineInterface)->CreateOutputMix(mSlEngineInterface, &mSlOutputMixObject, numWantedInterfaces, NULL, NULL);
- assert(SL_RESULT_SUCCESS == result);
-
- result = (*mSlOutputMixObject)->Realize(mSlOutputMixObject, SL_BOOLEAN_FALSE);
- assert(SL_RESULT_SUCCESS == result);
-
-}
-
-void opensl_prefetch_callback(SLPrefetchStatusItf caller, void* pContext, SLuint32 event) {
- if (event & SL_PREFETCHEVENT_STATUSCHANGE) {
- SLpermille level = 0;
- (*caller)->GetFillLevel(caller, &level);
- if (level == 0) {
- SLuint32 status;
- (*caller)->GetPrefetchStatus(caller, &status);
- if (status == SL_PREFETCHSTATUS_UNDERFLOW) {
- // Level is 0 but we have SL_PREFETCHSTATUS_UNDERFLOW, implying an error.
- printf("play-audio: underflow when prefetching data\n");
- MutexWithCondition* cond = (MutexWithCondition*) pContext;
- cond->lockAndSignal();
- }
- }
- }
-}
-
-void opensl_player_callback(SLPlayItf /*caller*/, void* pContext, SLuint32 /*event*/) {
- MutexWithCondition* condition = (MutexWithCondition*) pContext;
- condition->lockAndSignal();
-}
-
-void AudioPlayer::play(char const* uri)
-{
- SLDataLocator_URI loc_uri = {SL_DATALOCATOR_URI, (SLchar *) uri};
- SLDataFormat_MIME format_mime = {SL_DATAFORMAT_MIME, NULL, SL_CONTAINERTYPE_UNSPECIFIED};
- SLDataSource audioSrc = {&loc_uri, &format_mime};
-
- SLDataLocator_OutputMix loc_outmix = {SL_DATALOCATOR_OUTPUTMIX, mSlOutputMixObject};
- SLDataSink audioSnk = {&loc_outmix, NULL};
-
- // SL_IID_ANDROIDCONFIGURATION is Android specific interface, SL_IID_PREFETCHSTATUS is general:
- SLuint32 const numWantedInterfaces = 2;
- SLInterfaceID wantedInterfaces[numWantedInterfaces]{ SL_IID_ANDROIDCONFIGURATION, SL_IID_PREFETCHSTATUS };
- SLboolean wantedInterfacesRequired[numWantedInterfaces]{ SL_BOOLEAN_TRUE, SL_BOOLEAN_TRUE };
-
- SLObjectItf uriPlayerObject = NULL;
- SLresult result = (*mSlEngineInterface)->CreateAudioPlayer(mSlEngineInterface, &uriPlayerObject, &audioSrc, &audioSnk,
- numWantedInterfaces, wantedInterfaces, wantedInterfacesRequired);
- assert(SL_RESULT_SUCCESS == result);
-
- // Android specific interface - usage:
- // SLresult (*GetInterface) (SLObjectItf self, const SLInterfaceID iid, void* pInterface);
- // This function gives different interfaces. One is android-specific, from
- // <SLES/OpenSLES_AndroidConfiguration.h>, done before realization:
- SLAndroidConfigurationItf androidConfig;
- result = (*uriPlayerObject)->GetInterface(uriPlayerObject, SL_IID_ANDROIDCONFIGURATION, &androidConfig);
- assert(SL_RESULT_SUCCESS == result);
-
- result = (*androidConfig)->SetConfiguration(androidConfig, SL_ANDROID_KEY_STREAM_TYPE, &this->androidStreamType, sizeof(SLint32));
- assert(SL_RESULT_SUCCESS == result);
-
- // We now Realize(). Note that the android config needs to be done before, but getting the SLPrefetchStatusItf after.
- result = (*uriPlayerObject)->Realize(uriPlayerObject, /*async=*/SL_BOOLEAN_FALSE);
- assert(SL_RESULT_SUCCESS == result);
-
- SLPrefetchStatusItf prefetchInterface;
- result = (*uriPlayerObject)->GetInterface(uriPlayerObject, SL_IID_PREFETCHSTATUS, &prefetchInterface);
- assert(SL_RESULT_SUCCESS == result);
-
- SLPlayItf uriPlayerPlay = NULL;
- result = (*uriPlayerObject)->GetInterface(uriPlayerObject, SL_IID_PLAY, &uriPlayerPlay);
- assert(SL_RESULT_SUCCESS == result);
-
- if (NULL == uriPlayerPlay) {
- fprintf(stderr, "Cannot play '%s'\n", uri);
- } else {
- result = (*uriPlayerPlay)->SetCallbackEventsMask(uriPlayerPlay, SL_PLAYEVENT_HEADSTALLED | SL_PLAYEVENT_HEADATEND);
- assert(SL_RESULT_SUCCESS == result);
-
- MutexWithCondition condition;
- result = (*uriPlayerPlay)->RegisterCallback(uriPlayerPlay, opensl_player_callback, &condition);
- assert(SL_RESULT_SUCCESS == result);
-
- result = (*prefetchInterface)->RegisterCallback(prefetchInterface, opensl_prefetch_callback, &condition);
- assert(SL_RESULT_SUCCESS == result);
- result = (*prefetchInterface)->SetCallbackEventsMask(prefetchInterface, SL_PREFETCHEVENT_FILLLEVELCHANGE | SL_PREFETCHEVENT_STATUSCHANGE);
-
- // "For an audio player with URI data source, Object::Realize allocates resources but does not
- // connect to the data source (i.e. "prepare") or begin pre-fetching data. These occur once the
- // player state is set to either SL_PLAYSTATE_PAUSED or SL_PLAYSTATE_PLAYING."
- // - http://mobilepearls.com/labs/native-android-api/ndk/docs/opensles/index.html
- result = (*uriPlayerPlay)->SetPlayState(uriPlayerPlay, SL_PLAYSTATE_PLAYING);
- assert(SL_RESULT_SUCCESS == result);
-
- condition.waitFor();
- }
-
- if (uriPlayerObject != NULL) (*uriPlayerObject)->Destroy(uriPlayerObject);
-}
-
-
-AudioPlayer::~AudioPlayer()
-{
- // "Be sure to destroy all objects on exit from your application. Objects should be destroyed in reverse order of their creation,
- // as it is not safe to destroy an object that has any dependent objects. For example, destroy in this order: audio players
- // and recorders, output mix, then finally the engine."
- if (mSlOutputMixObject != NULL) { (*mSlOutputMixObject)->Destroy(mSlOutputMixObject); mSlOutputMixObject = NULL; }
- if (mSlEngineObject != NULL) { (*mSlEngineObject)->Destroy(mSlEngineObject); mSlEngineObject = NULL; }
-}
-
-
-int main(int argc, char** argv)
-{
- bool help = false;
- int c;
- char* streamType = NULL;
- while ((c = getopt(argc, argv, "hs:")) != -1) {
- switch (c) {
- case 'h':
- case '?': help = true; break;
- case 's': streamType = optarg; break;
- }
- }
-
- if (help || optind == argc) {
- printf("usage: play-audio [-s streamtype] [files]\n");
- return 1;
- }
-
- AudioPlayer player;
-
- if (streamType != NULL) {
- SLint32 streamTypeEnum;
- if (strcmp("alarm", streamType) == 0) {
- streamTypeEnum = SL_ANDROID_STREAM_ALARM;
- } else if (strcmp("media", streamType) == 0) {
- streamTypeEnum = SL_ANDROID_STREAM_MEDIA;
- } else if (strcmp("notification", streamType) == 0) {
- streamTypeEnum = SL_ANDROID_STREAM_NOTIFICATION;
- } else if (strcmp("ring", streamType) == 0) {
- streamTypeEnum = SL_ANDROID_STREAM_RING;
- } else if (strcmp("system", streamType) == 0) {
- streamTypeEnum = SL_ANDROID_STREAM_SYSTEM;
- } else if (strcmp("voice", streamType) == 0) {
- streamTypeEnum = SL_ANDROID_STREAM_VOICE;
- } else {
- fprintf(stderr, "play-audio: invalid streamtype '%s'\n", streamType);
- return 1;
- }
- player.setStreamType(streamTypeEnum);
- }
-
- for (int i = optind; i < argc; i++) {
- if (access(argv[i], R_OK) != 0) {
- fprintf(stderr, "play-audio: '%s' is not a readable file\n", argv[i]);
- return 1;
- }
- }
-
- for (int i = optind; i < argc; i++) {
- player.play(argv[i]);
- }
-
- return 0;
-}
~mdw / termux-packages / commitdiff