void VlcMediaPlayer::emitStatus()
{
Vlc::State s = state();
bool audio_count;
bool video_count;
if (s == Vlc::Buffering ||
s == Vlc::Playing ||
s == Vlc::Paused) {
audio_count = _vlcAudio->trackCount() > 0;
video_count = _vlcVideo->trackCount() > 0;
} else {
audio_count = false;
video_count = false;
}
VlcError::errmsg();
emit currentState(s);
emit hasAudio(audio_count);
emit hasVideo(video_count);
// Deprecated
bool play = s == Vlc::Playing;
bool buffering = s == Vlc::Buffering;
emit playing(play, buffering);
}
// Returns the size of the video
IntSize MediaPlayerPrivate::naturalSize() const
{
if (!hasVideo())
return IntSize();
// TODO: handle possible clean aperture data. See
// https://bugzilla.gnome.org/show_bug.cgi?id=596571
// TODO: handle possible transformation matrix. See
// https://bugzilla.gnome.org/show_bug.cgi?id=596326
int width = 0, height = 0;
if (GstPad* pad = gst_element_get_static_pad(m_videoSink, "sink")) {
GstCaps* caps = GST_PAD_CAPS(pad);
gfloat pixelAspectRatio;
gint pixelAspectRatioNumerator, pixelAspectRatioDenominator;
if (!GST_IS_CAPS(caps) || !gst_caps_is_fixed(caps) ||
!gst_video_format_parse_caps(caps, NULL, &width, &height) ||
!gst_video_parse_caps_pixel_aspect_ratio(caps, &pixelAspectRatioNumerator,
&pixelAspectRatioDenominator)) {
gst_object_unref(GST_OBJECT(pad));
return IntSize();
}
pixelAspectRatio = (gfloat) pixelAspectRatioNumerator / (gfloat) pixelAspectRatioDenominator;
width *= pixelAspectRatio;
height /= pixelAspectRatio;
gst_object_unref(GST_OBJECT(pad));
}
return IntSize(width, height);
}
void WebMediaPlayerClientImpl::readyStateChanged()
{
ASSERT(m_mediaPlayer);
m_mediaPlayer->readyStateChanged();
if (hasVideo() && supportsAcceleratedRendering() && !m_videoLayer.get())
m_videoLayer = VideoLayerChromium::create(0, this);
}
// Returns the size of the video
IntSize MediaPlayerPrivate::naturalSize() const
{
if (!hasVideo())
return IntSize();
return IntSize();
}
// Returns the size of the video
IntSize MediaPlayerPrivateGStreamerBase::naturalSize() const
{
if (!hasVideo())
return IntSize();
if (!m_videoSize.isEmpty())
return m_videoSize;
GRefPtr<GstCaps> caps = currentVideoSinkCaps();
if (!caps)
return IntSize();
// TODO: handle possible clean aperture data. See
// https://bugzilla.gnome.org/show_bug.cgi?id=596571
// TODO: handle possible transformation matrix. See
// https://bugzilla.gnome.org/show_bug.cgi?id=596326
// Get the video PAR and original size, if this fails the
// video-sink has likely not yet negotiated its caps.
int pixelAspectRatioNumerator, pixelAspectRatioDenominator, stride;
IntSize originalSize;
GstVideoFormat format;
if (!getVideoSizeAndFormatFromCaps(caps.get(), originalSize, format, pixelAspectRatioNumerator, pixelAspectRatioDenominator, stride))
return IntSize();
LOG_MEDIA_MESSAGE("Original video size: %dx%d", originalSize.width(), originalSize.height());
LOG_MEDIA_MESSAGE("Pixel aspect ratio: %d/%d", pixelAspectRatioNumerator, pixelAspectRatioDenominator);
// Calculate DAR based on PAR and video size.
int displayWidth = originalSize.width() * pixelAspectRatioNumerator;
int displayHeight = originalSize.height() * pixelAspectRatioDenominator;
// Divide display width and height by their GCD to avoid possible overflows.
int displayAspectRatioGCD = greatestCommonDivisor(displayWidth, displayHeight);
displayWidth /= displayAspectRatioGCD;
displayHeight /= displayAspectRatioGCD;
// Apply DAR to original video size. This is the same behavior as in xvimagesink's setcaps function.
guint64 width = 0, height = 0;
if (!(originalSize.height() % displayHeight)) {
LOG_MEDIA_MESSAGE("Keeping video original height");
width = gst_util_uint64_scale_int(originalSize.height(), displayWidth, displayHeight);
height = static_cast<guint64>(originalSize.height());
} else if (!(originalSize.width() % displayWidth)) {
LOG_MEDIA_MESSAGE("Keeping video original width");
height = gst_util_uint64_scale_int(originalSize.width(), displayHeight, displayWidth);
width = static_cast<guint64>(originalSize.width());
} else {
LOG_MEDIA_MESSAGE("Approximating while keeping original video height");
width = gst_util_uint64_scale_int(originalSize.height(), displayWidth, displayHeight);
height = static_cast<guint64>(originalSize.height());
}
LOG_MEDIA_MESSAGE("Natural size: %" G_GUINT64_FORMAT "x%" G_GUINT64_FORMAT, width, height);
m_videoSize = IntSize(static_cast<int>(width), static_cast<int>(height));
return m_videoSize;
}
void WebMediaPlayerClientImpl::readyStateChanged()
{
ASSERT(m_mediaPlayer);
m_mediaPlayer->readyStateChanged();
#if USE(ACCELERATED_COMPOSITING)
if (hasVideo() && supportsAcceleratedRendering() && !m_videoLayer.get())
m_videoLayer = VideoLayerChromium::create(0, this);
#endif
}
QString MmRendererMetaData::mediaType() const
{
if (hasVideo())
return QLatin1String("video");
else if (hasAudio())
return QLatin1String("audio");
else
return QString();
}
// Returns the size of the video
IntSize MediaPlayerPrivate::naturalSize() const
{
if (!hasVideo())
return IntSize();
int x = 0, y = 0;
if (GstPad* pad = gst_element_get_static_pad(m_videoSink, "sink")) {
gst_video_get_size(GST_PAD(pad), &x, &y);
gst_object_unref(GST_OBJECT(pad));
}
return IntSize(x, y);
}
Private::Media::Frame::Ptr Source::nextFrame()
{
assert(hasVideo() && "Source::nextFrame : Cannot get a video frame from an audio-only source !");
// FIXME : There is probably a race condition here !
// We need a mutex lock
if (pFrames.empty())
{
return pVStream->nextFrame();
}
auto frame = pFrames.front();
pFrames.pop_front();
return frame;
}
bool Source::updateDispatched(uint source)
{
if (!valid())
return false;
// Audio
if (hasAudio())
{
// Update time progression in the current buffer
::alGetSourcef(source, AL_SEC_OFFSET, &pSecondsCurrent);
// Check if a buffer has finished playing
ALint processed = 0;
::alGetSourcei(source, AL_BUFFERS_PROCESSED, &processed);
if (!processed)
return true;
// A buffer has finished playing, unqueue it
ALuint buffer = Private::Media::OpenAL::UnqueueBufferFromSource(source);
// Reset current buffer time
pSecondsCurrent = 0.0f;
uint bits = pAStream->bits();
uint channels = pAStream->channels();
uint frequency = pAStream->rate();
int bufferSize;
::alGetBufferi(buffer, AL_SIZE, &bufferSize);
pSecondsElapsed += bufferSize * 8.0f / bits / frequency;
// Get the next data to feed the buffer
uint size = fillBuffer();
if (!size)
return false;
// Buffer the data with OpenAL and queue the buffer onto the source
if (!Private::Media::OpenAL::SetBufferData(buffer, pAStream->alFormat(), pData.data(),
size, frequency / channels))
return false;
if (!Private::Media::OpenAL::QueueBufferToSource(buffer, source))
return false;
}
// Video
if (hasVideo())
{
/*
if (hasAudio() and Private::Media::OpenAL::IsSourcePlaying(source))
{
std::cout << "Video and audio sync !" << std::endl;
// Try to sync with audio
ALfloat elapsed;
::alGetSourcef(source, AL_SEC_OFFSET, &elapsed);
while (!pFrames.empty() and elapsed > pFrames.front()->timestamp())
{
pFrames.pop_front();
if (pFrames.empty())
fillQueue();
}
}
*/
// TEMPORARY
// The sync code is not working yet, just get some frames when we need them for now
// if (pFrames.empty())
// fillQueue();
if (pFrames.empty())
// Failed to load anymore
return false;
}
return true;
}
bool GStreamerWrapper::open( std::string strFilename, bool bGenerateVideoBuffer, bool bGenerateAudioBuffer )
{
if( m_bFileIsOpen )
{
stop();
close();
}
// init property variables
m_iNumVideoStreams = 0;
m_iNumAudioStreams = 0;
m_iCurrentVideoStream = 0;
m_iCurrentAudioStream = 0;
m_iWidth = m_iHeight = 0;
m_iCurrentFrameNumber = 0; // set to invalid, as it is not decoded yet
m_dCurrentTimeInMs = 0; // set to invalid, as it is not decoded yet
m_bIsAudioSigned = false;
m_bIsNewVideoFrame = false;
m_iNumAudioChannels = 0;
m_iAudioSampleRate = 0;
m_iAudioBufferSize = 0;
m_iAudioWidth = 0;
m_AudioEndianness = LITTLE_ENDIAN;
m_fFps = 0;
m_dDurationInMs = 0;
m_iNumberOfFrames = 0;
m_fVolume = 1.0f;
m_fSpeed = 1.0f;
m_PlayDirection = FORWARD;
m_CurrentPlayState = NOT_INITIALIZED;
m_LoopMode = LOOP;
m_strFilename = strFilename;
#ifdef THREADED_MESSAGE_HANDLER
m_MsgHandlingThread = std::thread( std::bind( threadedMessageHandler, this ) );
#endif
////////////////////////////////////////////////////////////////////////// PIPELINE
// Init main pipeline --> playbin2
m_GstPipeline = gst_element_factory_make( "playbin2", "pipeline" );
// Check and re-arrange filename string
if ( strFilename.find( "file:/", 0 ) == std::string::npos &&
strFilename.find( "file:///", 0 ) == std::string::npos &&
strFilename.find( "http://", 0 ) == std::string::npos )
{
strFilename = "file:/" + strFilename;
}
// Open Uri
g_object_set( m_GstPipeline, "uri", strFilename.c_str(), NULL );
////////////////////////////////////////////////////////////////////////// VIDEO SINK
// Extract and Config Video Sink
if ( bGenerateVideoBuffer )
{
// Create the video appsink and configure it
m_GstVideoSink = gst_element_factory_make( "appsink", "videosink" );
gst_base_sink_set_sync( GST_BASE_SINK( m_GstVideoSink ), true );
gst_app_sink_set_max_buffers( GST_APP_SINK( m_GstVideoSink ), 8 );
gst_app_sink_set_drop( GST_APP_SINK( m_GstVideoSink ),true );
gst_base_sink_set_max_lateness( GST_BASE_SINK( m_GstVideoSink ), -1);
// Set some fix caps for the video sink
// It would seem that GStreamer then tries to transform any incoming video stream according to these caps
GstCaps* caps = gst_caps_new_simple( "video/x-raw-rgb",
"bpp", G_TYPE_INT, 24,
"depth", G_TYPE_INT, 24,
"endianness",G_TYPE_INT,4321,
"red_mask",G_TYPE_INT,0xff0000,
"green_mask",G_TYPE_INT,0x00ff00,
"blue_mask",G_TYPE_INT,0x0000ff,
"alpha_mask",G_TYPE_INT,0x000000ff,
NULL );
gst_app_sink_set_caps( GST_APP_SINK( m_GstVideoSink ), caps );
gst_caps_unref( caps );
// Set the configured video appsink to the main pipeline
g_object_set( m_GstPipeline, "video-sink", m_GstVideoSink, (void*)NULL );
// Tell the video appsink that it should not emit signals as the buffer retrieving is handled via callback methods
g_object_set( m_GstVideoSink, "emit-signals", false, "sync", true, (void*)NULL );
// Set Video Sink callback methods
m_GstVideoSinkCallbacks.eos = &GStreamerWrapper::onEosFromVideoSource;
m_GstVideoSinkCallbacks.new_preroll = &GStreamerWrapper::onNewPrerollFromVideoSource;
m_GstVideoSinkCallbacks.new_buffer = &GStreamerWrapper::onNewBufferFromVideoSource;
gst_app_sink_set_callbacks( GST_APP_SINK( m_GstVideoSink ), &m_GstVideoSinkCallbacks, this, NULL );
}
else
{
#if defined _WIN32 // Use direct show as playback plugin if on Windows; Needed for features like play direction and playback speed to work correctly
GstElement* videoSink = gst_element_factory_make( "directdrawsink", NULL );
g_object_set( m_GstPipeline, "video-sink", videoSink, NULL );
#elif defined LINUX
GstElement* videoSink = gst_element_factory_make( "xvimagesink", NULL ); //possible alternatives: ximagesink (no (gpu) fancy stuff) or better: cluttersink
g_object_set( m_GstPipeline, "video-sink", videoSink, NULL );
#else // Use Mac OSX plugin otherwise
GstElement* videoSink = gst_element_factory_make( "osxvideosink", NULL );
g_object_set( m_GstPipeline, "video-sink", videoSink, NULL );
#endif
}
////////////////////////////////////////////////////////////////////////// AUDIO SINK
// Extract and config Audio Sink
if ( bGenerateAudioBuffer )
{
// Create and configure audio appsink
m_GstAudioSink = gst_element_factory_make( "appsink", "audiosink" );
gst_base_sink_set_sync( GST_BASE_SINK( m_GstAudioSink ), true );
// Set the configured audio appsink to the main pipeline
g_object_set( m_GstPipeline, "audio-sink", m_GstAudioSink, (void*)NULL );
// Tell the video appsink that it should not emit signals as the buffer retrieving is handled via callback methods
g_object_set( m_GstAudioSink, "emit-signals", false, "sync", true, (void*)NULL );
// Set Audio Sink callback methods
m_GstAudioSinkCallbacks.eos = &GStreamerWrapper::onEosFromAudioSource;
m_GstAudioSinkCallbacks.new_preroll = &GStreamerWrapper::onNewPrerollFromAudioSource;
m_GstAudioSinkCallbacks.new_buffer = &GStreamerWrapper::onNewBufferFromAudioSource;
gst_app_sink_set_callbacks( GST_APP_SINK( m_GstAudioSink ), &m_GstAudioSinkCallbacks, this, NULL );
}
else
{
#if defined _WIN32 // Use direct sound plugin if on Windows; Needed for features like play direction and playback speed to work correctly
GstElement* audioSink = gst_element_factory_make( "directsoundsink", NULL );
g_object_set ( m_GstPipeline, "audio-sink", audioSink, NULL );
#elif defined LINUX
GstElement* audioSink = gst_element_factory_make( "pulsesink", NULL ); //alternative: alsasink
g_object_set ( m_GstPipeline, "audio-sink", audioSink, NULL );
#else // Use Mac OSC plugin otherwise
GstElement* audioSink = gst_element_factory_make( "osxaudiosink", NULL );
g_object_set ( m_GstPipeline,"audio-sink", audioSink, NULL );
#endif
}
////////////////////////////////////////////////////////////////////////// BUS
// Set GstBus
m_GstBus = gst_pipeline_get_bus( GST_PIPELINE( m_GstPipeline ) );
if ( m_GstPipeline != NULL )
{
//just add this callback for threaded message handling
#ifdef THREADED_MESSAGE_HANDLER
gst_bus_add_watch (m_GstBus, onHandleGstMessages, this );
#endif
// We need to stream the file a little bit in order to be able to retrieve information from it
gst_element_set_state( m_GstPipeline, GST_STATE_READY );
gst_element_set_state( m_GstPipeline, GST_STATE_PAUSED );
// For some reason this is needed in order to gather video information such as size, framerate etc ...
GstState state;
gst_element_get_state( m_GstPipeline, &state, NULL, 2 * GST_SECOND );
m_CurrentPlayState = OPENED;
}
// Retrieve and store all relevant Media Information
retrieveVideoInfo();
if( !hasVideo() && !hasAudio() ) // is a valid multimedia file?
{
close();
return false;
}
// Print Media Info
printMediaFileInfo();
// TODO: Check if everything was initialized correctly
// A file has been opened
m_bFileIsOpen = true;
return true;
}
