vlcjni_object *
VLCJniObject_newFromJavaLibVlc(JNIEnv *env, jobject thiz,
jobject libVlc, const char **pp_error)
{
libvlc_instance_t *p_libvlc = getLibVlcInstance(env, libVlc);
if (!p_libvlc)
{
if (libVlc)
*pp_error = "Can't get mLibVlcInstance from libVlc";
else
*pp_error = "libVlc is NULL";
return NULL;
}
return VLCJniObject_newFromLibVlc(env, thiz, p_libvlc, pp_error);
}
libvlc_media_t *new_media(JNIEnv *env, jobject thiz, jstring fileLocation, bool noOmx, bool noVideo)
{
libvlc_instance_t *libvlc = getLibVlcInstance(env, thiz);
jboolean isCopy;
const char *psz_location = (*env)->GetStringUTFChars(env, fileLocation, &isCopy);
libvlc_media_t *p_md = libvlc_media_new_location(libvlc, psz_location);
(*env)->ReleaseStringUTFChars(env, fileLocation, psz_location);
if (!p_md)
return NULL;
jclass cls = (*env)->GetObjectClass(env, thiz);
jmethodID methodId = (*env)->GetMethodID(env, cls, "getMediaOptions", "(ZZ)[Ljava/lang/String;");
if (methodId != NULL)
{
jobjectArray mediaOptions = (*env)->CallObjectMethod(env, thiz, methodId, noOmx, noVideo);
if (mediaOptions != NULL)
{
add_media_options(p_md, env, mediaOptions);
(*env)->DeleteLocalRef(env, mediaOptions);
}
}
return p_md;
}
void Java_org_videolan_libvlc_LibVLC_playMRL(JNIEnv *env, jobject thiz,
jstring mrl, jobjectArray mediaOptions)
{
/* Release previous media player, if any */
releaseMediaPlayer(env, thiz);
libvlc_instance_t *p_instance = getLibVlcInstance(env, thiz);
/* Create a media player playing environment */
libvlc_media_player_t *mp = libvlc_media_player_new(p_instance);
libvlc_media_player_set_video_title_display(mp, libvlc_position_disable, 0);
jobject myJavaLibVLC = (*env)->NewGlobalRef(env, thiz); // freed in aout_close
// If AOUT_AUDIOTRACK_JAVA, use amem
jclass cls = (*env)->GetObjectClass(env, thiz);
jmethodID methodId = (*env)->GetMethodID(env, cls, "getAout", "()I");
if ( (*env)->CallIntMethod(env, thiz, methodId) == AOUT_AUDIOTRACK_JAVA )
{
libvlc_audio_set_callbacks(mp, aout_play, aout_pause, NULL, NULL, NULL,
(void*) myJavaLibVLC);
libvlc_audio_set_format_callbacks(mp, aout_open, aout_close);
}
/* Connect the event manager */
libvlc_event_manager_t *ev = libvlc_media_player_event_manager(mp);
static const libvlc_event_type_t mp_events[] = {
libvlc_MediaPlayerPlaying,
libvlc_MediaPlayerPaused,
libvlc_MediaPlayerEndReached,
libvlc_MediaPlayerStopped,
libvlc_MediaPlayerVout,
libvlc_MediaPlayerPositionChanged,
libvlc_MediaPlayerTimeChanged,
libvlc_MediaPlayerEncounteredError
};
for(int i = 0; i < (sizeof(mp_events) / sizeof(*mp_events)); i++)
libvlc_event_attach(ev, mp_events[i], vlc_event_callback, myVm);
/* Keep a pointer to this media player */
setLong(env, thiz, "mInternalMediaPlayerInstance", (jlong)(intptr_t)mp);
cls = (*env)->GetObjectClass(env, thiz);
jmethodID methodID = (*env)->GetMethodID(env, cls, "applyEqualizer", "()V");
(*env)->CallVoidMethod(env, thiz, methodID);
const char* p_mrl = (*env)->GetStringUTFChars(env, mrl, 0);
libvlc_media_t* p_md = libvlc_media_new_location(p_instance, p_mrl);
/* media options */
if (mediaOptions != NULL)
add_media_options(p_md, env, mediaOptions);
(*env)->ReleaseStringUTFChars(env, mrl, p_mrl);
/* Connect the media event manager. */
libvlc_event_manager_t *ev_media = libvlc_media_event_manager(p_md);
static const libvlc_event_type_t mp_media_events[] = {
libvlc_MediaParsedChanged,
libvlc_MediaMetaChanged,
};
for(int i = 0; i < (sizeof(mp_media_events) / sizeof(*mp_media_events)); i++)
libvlc_event_attach(ev_media, mp_media_events[i], vlc_event_callback, myVm);
libvlc_media_player_set_media(mp, p_md);
libvlc_media_player_play(mp);
}
/**
* Thumbnailer main function.
* return null if the thumbail generation failed.
**/
jbyteArray Java_org_videolan_libvlc_LibVLC_getThumbnail(JNIEnv *env, jobject thiz,
jstring filePath,
const jint frameWidth, const jint frameHeight)
{
libvlc_instance_t *libvlc = getLibVlcInstance(env, thiz);
jbyteArray byteArray = NULL;
/* Create the thumbnailer data structure */
thumbnailer_sys_t *sys = calloc(1, sizeof(thumbnailer_sys_t));
if (sys == NULL)
{
LOGE("Could not create the thumbnailer data structure!");
goto enomem;
}
/* Initialize the barrier. */
pthread_mutex_init(&sys->doneMutex, NULL);
pthread_cond_init(&sys->doneCondVar, NULL);
/* Create a media player playing environment */
libvlc_media_player_t *mp = libvlc_media_player_new(libvlc);
libvlc_media_player_set_video_title_display(mp, libvlc_position_disable, 0);
libvlc_media_t *m = new_media(env, thiz, filePath, true, false);
if (m == NULL)
{
LOGE("Could not create the media to play!");
goto end;
}
/* Fast and no options */
libvlc_media_add_option( m, ":no-audio" );
libvlc_media_add_option( m, ":no-spu" );
libvlc_media_add_option( m, ":no-osd" );
libvlc_media_player_set_media(mp, m);
/* Get the size of the video with the tracks information of the media. */
libvlc_media_track_t **tracks;
libvlc_media_parse(m);
int nbTracks = libvlc_media_tracks_get(m, &tracks);
libvlc_media_release(m);
/* Parse the results */
unsigned videoWidth = 0, videoHeight = 0;
bool hasVideoTrack = false;
for (unsigned i = 0; i < nbTracks; ++i)
if (tracks[i]->i_type == libvlc_track_video)
{
videoWidth = tracks[i]->video->i_width;
videoHeight = tracks[i]->video->i_height;
hasVideoTrack = true;
break;
}
libvlc_media_tracks_release(tracks, nbTracks);
/* Abort if we have not found a video track. */
if (!hasVideoTrack)
{
LOGE("Could not find any video track in this file.\n");
goto end;
}
LOGD("Video dimensions: %ix%i.\n", videoWidth, videoHeight );
/* VLC could not tell us the size */
if( videoWidth == 0 || videoHeight == 0 )
{
LOGE("Could not find the video dimensions.\n");
goto end;
}
if( videoWidth < THUMBNAIL_MIN_WIDTH || videoHeight < THUMBNAIL_MIN_HEIGHT
|| videoWidth > THUMBNAIL_MAX_WIDTH || videoHeight > THUMBNAIL_MAX_HEIGHT )
{
LOGE("Wrong video dimensions.\n");
goto end;
}
/* Compute the size parameters of the frame to generate. */
unsigned thumbWidth = frameWidth;
unsigned thumbHeight = frameHeight;
const float inputAR = (float)videoWidth / videoHeight;
const float screenAR = (float)frameWidth / frameHeight;
/* Most of the cases, video is wider than tall */
if (screenAR < inputAR)
{
thumbHeight = (float)frameWidth / inputAR + 1;
sys->blackBorders = ( (frameHeight - thumbHeight) / 2 ) * frameWidth;
}
else
{
LOGD("Weird aspect Ratio.\n");
thumbWidth = (float)frameHeight * inputAR;
sys->blackBorders = (frameWidth - thumbWidth) / 2;
}
sys->thumbPitch = thumbWidth * PIXEL_SIZE;
sys->thumbHeight = thumbHeight;
sys->frameWidth = frameWidth;
/* Allocate the memory to store the frames. */
size_t thumbSize = sys->thumbPitch * (sys->thumbHeight+1);
sys->thumbData = malloc(thumbSize);
if (sys->thumbData == NULL)
{
LOGE("Could not allocate the memory to store the frame!");
goto end;
}
/* Allocate the memory to store the thumbnail. */
unsigned frameSize = frameWidth * frameHeight * PIXEL_SIZE;
sys->frameData = calloc(frameSize, 1);
if (sys->frameData == NULL)
{
LOGE("Could not allocate the memory to store the thumbnail!");
goto end;
}
/* Set the video format and the callbacks. */
libvlc_video_set_format(mp, "RGBA", thumbWidth, thumbHeight, sys->thumbPitch);
libvlc_video_set_callbacks(mp, thumbnailer_lock, thumbnailer_unlock,
NULL, (void*)sys);
sys->state = THUMB_SEEKING;
/* Play the media. */
libvlc_media_player_play(mp);
libvlc_media_player_set_position(mp, THUMBNAIL_POSITION);
const int wait_time = 50000;
const int max_attempts = 100;
for (int i = 0; i < max_attempts; ++i) {
if (libvlc_media_player_is_playing(mp) && libvlc_media_player_get_position(mp) >= THUMBNAIL_POSITION)
break;
usleep(wait_time);
}
/* Wait for the thumbnail to be generated. */
pthread_mutex_lock(&sys->doneMutex);
sys->state = THUMB_SEEKED;
struct timespec deadline;
clock_gettime(CLOCK_REALTIME, &deadline);
deadline.tv_sec += 10; /* amount of seconds before we abort thumbnailer */
do {
int ret = pthread_cond_timedwait(&sys->doneCondVar, &sys->doneMutex, &deadline);
if (ret == ETIMEDOUT)
break;
} while (sys->state != THUMB_DONE);
pthread_mutex_unlock(&sys->doneMutex);
/* Stop and release the media player. */
libvlc_media_player_stop(mp);
libvlc_media_player_release(mp);
if (sys->state == THUMB_DONE) {
/* Create the Java byte array to return the create thumbnail. */
byteArray = (*env)->NewByteArray(env, frameSize);
if (byteArray == NULL)
{
LOGE("Could not allocate the Java byte array to store the frame!");
goto end;
}
(*env)->SetByteArrayRegion(env, byteArray, 0, frameSize,
(jbyte *)sys->frameData);
}
end:
pthread_mutex_destroy(&sys->doneMutex);
pthread_cond_destroy(&sys->doneCondVar);
free(sys->frameData);
free(sys->thumbData);
free(sys);
enomem:
return byteArray;
}