mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-10-06 02:32:23 +00:00
examples: Fix Qt/GL qglwtextureshare example for X11
We need to pass the X11 display to GstGL or else it will use its own X11 Display pointer, and the GL Context won't get shared correctly on newer X servers
This commit is contained in:
Jan Schmidt
parent
0fd0683996
commit
37c70c8efa
7 changed files with 378 additions and 318 deletions
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@ -1,3 +1,6 @@
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Requires: >= Qt 5.1 for the x11extras module (or else you need to
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get x11extras from gitorious yourself)
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This example illustrates how to integrate Gstreamer GL plugin with
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Qt. In particular it uses glupload with fakesink elements to create
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texture with decoded video frame. This texture is shared with
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@ -23,15 +23,15 @@
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#include "gstthread.h"
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GstThread::GstThread(GstGLContext *context,
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GstThread::GstThread(GstGLDisplay *display,
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GstGLContext *context,
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const QString &videoLocation,
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const char *renderer_slot,
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QObject *parent):
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QThread(parent),
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m_videoLocation(videoLocation)
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{
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this->context = context;
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m_pipeline = new Pipeline(this->context, m_videoLocation, this);
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m_pipeline = new Pipeline(display, context, m_videoLocation, this);
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QObject::connect(m_pipeline, SIGNAL(newFrameReady()), this->parent(), renderer_slot, Qt::QueuedConnection);
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}
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@ -34,7 +34,8 @@ class GstThread : public QThread
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Q_OBJECT
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public:
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GstThread(GstGLContext *context,
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GstThread(GstGLDisplay *display,
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GstGLContext *context,
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const QString &videoLocation,
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const char *renderer_slot,
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QObject *parent = 0);
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@ -50,7 +51,6 @@ protected:
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void run();
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private:
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GstGLContext *context;
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const QString m_videoLocation;
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Pipeline* m_pipeline;
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};
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@ -22,200 +22,214 @@
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#include "pipeline.h"
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Pipeline::Pipeline(GstGLContext *context,
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const QString &videoLocation,
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QObject *parent)
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: QObject(parent),
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m_videoLocation(videoLocation),
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m_loop(NULL),
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m_bus(NULL),
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m_pipeline(NULL)
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Pipeline::Pipeline (GstGLDisplay *display,
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GstGLContext * context, const QString & videoLocation, QObject * parent)
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:
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QObject (parent),
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m_videoLocation (videoLocation),
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m_loop (NULL),
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m_bus (NULL),
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m_pipeline (NULL)
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{
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this->context = context;
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this->configure();
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this->display = display;
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this->context = context;
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this->configure ();
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}
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Pipeline::~Pipeline()
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Pipeline::~Pipeline ()
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{
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}
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void
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Pipeline::configure()
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Pipeline::configure ()
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{
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#ifdef Q_WS_WIN
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m_loop = g_main_loop_new (NULL, FALSE);
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m_loop = g_main_loop_new (NULL, FALSE);
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#endif
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if(m_videoLocation.isEmpty())
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{
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qDebug("No video file specified. Using video test source.");
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m_pipeline =
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GST_PIPELINE (gst_parse_launch
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("videotestsrc ! "
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"video/x-raw, width=640, height=480, "
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"framerate=(fraction)30/1 ! "
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"gleffects effect=5 ! fakesink sync=1",
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NULL));
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}
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else
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{
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QByteArray ba = m_videoLocation.toLocal8Bit();
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qDebug("Loading video: %s", ba.data());
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gchar *pipeline = g_strdup_printf ("filesrc location='%s' ! "
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"decodebin ! gleffects effect=5 ! "
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"fakesink sync=1", ba.data());
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m_pipeline = GST_PIPELINE (gst_parse_launch (pipeline, NULL));
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g_free (pipeline);
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}
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if (m_videoLocation.isEmpty ()) {
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qDebug ("No video file specified. Using video test source.");
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m_pipeline =
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GST_PIPELINE (gst_parse_launch
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("videotestsrc ! "
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"video/x-raw, width=640, height=480, "
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"framerate=(fraction)30/1 ! "
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"gleffects effect=5 ! fakesink sync=1", NULL));
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} else {
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QByteArray ba = m_videoLocation.toLocal8Bit ();
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qDebug ("Loading video: %s", ba.data ());
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gchar *pipeline = g_strdup_printf ("filesrc name=f ! "
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"decodebin ! gleffects effect=5 ! " "fakesink sync=1");
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m_pipeline = GST_PIPELINE (gst_parse_launch (pipeline, NULL));
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GstElement *f = gst_bin_get_by_name (GST_BIN (m_pipeline), "f");
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g_object_set (G_OBJECT (f), "location", ba.data (), NULL);
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gst_object_unref (GST_OBJECT (f));
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g_free (pipeline);
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}
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m_bus = gst_pipeline_get_bus(GST_PIPELINE(m_pipeline));
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gst_bus_add_watch(m_bus, (GstBusFunc) bus_call, this);
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gst_object_unref(m_bus);
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m_bus = gst_pipeline_get_bus (GST_PIPELINE (m_pipeline));
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gst_bus_add_watch (m_bus, (GstBusFunc) bus_call, this);
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gst_bus_enable_sync_message_emission (m_bus);
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g_signal_connect (m_bus, "sync-message", G_CALLBACK (sync_bus_call), this);
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gst_object_unref (m_bus);
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/* Retrieve the last gl element */
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GstElement *gl_element = gst_bin_get_by_name(GST_BIN(m_pipeline), "gleffects0");
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if(!gl_element)
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{
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qDebug ("gl element could not be found");
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return;
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}
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g_object_set(G_OBJECT (gl_element), "other-context",
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this->context, NULL);
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gst_object_unref(gl_element);
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/* Retrieve the last gl element */
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GstElement *gl_element =
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gst_bin_get_by_name (GST_BIN (m_pipeline), "gleffects0");
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if (!gl_element) {
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qDebug ("gl element could not be found");
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return;
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}
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g_object_set (G_OBJECT (gl_element), "other-context", this->context, NULL);
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gst_object_unref (gl_element);
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gst_element_set_state(GST_ELEMENT(this->m_pipeline), GST_STATE_PAUSED);
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GstState state = GST_STATE_PAUSED;
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if(gst_element_get_state(GST_ELEMENT(this->m_pipeline),
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&state, NULL, GST_CLOCK_TIME_NONE)
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!= GST_STATE_CHANGE_SUCCESS)
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{
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qDebug("failed to pause pipeline");
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return;
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}
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gst_element_set_state (GST_ELEMENT (this->m_pipeline), GST_STATE_PAUSED);
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GstState state = GST_STATE_PAUSED;
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if (gst_element_get_state (GST_ELEMENT (this->m_pipeline),
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&state, NULL, GST_CLOCK_TIME_NONE)
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!= GST_STATE_CHANGE_SUCCESS) {
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qDebug ("failed to pause pipeline");
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return;
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}
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}
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void
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Pipeline::start()
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Pipeline::start ()
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{
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// set a callback to retrieve the gst gl textures
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GstElement *fakesink = gst_bin_get_by_name(GST_BIN(this->m_pipeline),
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"fakesink0");
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g_object_set(G_OBJECT (fakesink), "signal-handoffs", TRUE, NULL);
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g_signal_connect(fakesink, "handoff", G_CALLBACK (on_gst_buffer), this);
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gst_object_unref(fakesink);
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// set a callback to retrieve the gst gl textures
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GstElement *fakesink = gst_bin_get_by_name (GST_BIN (this->m_pipeline),
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"fakesink0");
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g_object_set (G_OBJECT (fakesink), "signal-handoffs", TRUE, NULL);
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g_signal_connect (fakesink, "handoff", G_CALLBACK (on_gst_buffer), this);
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gst_object_unref (fakesink);
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GstStateChangeReturn ret =
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gst_element_set_state(GST_ELEMENT(this->m_pipeline), GST_STATE_PLAYING);
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if (ret == GST_STATE_CHANGE_FAILURE)
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{
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qDebug("Failed to start up pipeline!");
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GstStateChangeReturn ret =
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gst_element_set_state (GST_ELEMENT (this->m_pipeline), GST_STATE_PLAYING);
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if (ret == GST_STATE_CHANGE_FAILURE) {
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qDebug ("Failed to start up pipeline!");
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/* check if there is an error message with details on the bus */
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GstMessage* msg = gst_bus_poll(this->m_bus, GST_MESSAGE_ERROR, 0);
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if (msg)
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{
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GError *err = NULL;
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gst_message_parse_error (msg, &err, NULL);
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qDebug ("ERROR: %s", err->message);
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g_error_free (err);
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gst_message_unref (msg);
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}
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return;
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/* check if there is an error message with details on the bus */
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GstMessage *msg = gst_bus_poll (this->m_bus, GST_MESSAGE_ERROR, 0);
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if (msg) {
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GError *err = NULL;
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gst_message_parse_error (msg, &err, NULL);
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qDebug ("ERROR: %s", err->message);
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g_error_free (err);
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gst_message_unref (msg);
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}
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return;
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}
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#ifdef Q_WS_WIN
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g_main_loop_run(m_loop);
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g_main_loop_run (m_loop);
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#endif
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}
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/* fakesink handoff callback */
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void
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Pipeline::on_gst_buffer(GstElement * element,
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GstBuffer * buf,
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GstPad * pad,
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Pipeline* p)
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Pipeline::on_gst_buffer (GstElement * element,
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GstBuffer * buf, GstPad * pad, Pipeline * p)
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{
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Q_UNUSED(pad)
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Q_UNUSED(element)
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Q_UNUSED (pad)
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Q_UNUSED (element)
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/* ref then push buffer to use it in qt */
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gst_buffer_ref(buf);
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p->queue_input_buf.put(buf);
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/* ref then push buffer to use it in qt */
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gst_buffer_ref (buf);
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p->queue_input_buf.put (buf);
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if (p->queue_input_buf.size() > 3)
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p->notifyNewFrame();
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if (p->queue_input_buf.size () > 3)
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p->notifyNewFrame ();
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/* pop then unref buffer we have finished to use in qt */
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if (p->queue_output_buf.size() > 3)
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{
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GstBuffer *buf_old = (p->queue_output_buf.get());
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if (buf_old)
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gst_buffer_unref(buf_old);
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}
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/* pop then unref buffer we have finished to use in qt */
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if (p->queue_output_buf.size () > 3) {
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GstBuffer *buf_old = (p->queue_output_buf.get ());
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if (buf_old)
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gst_buffer_unref (buf_old);
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}
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}
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void
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Pipeline::stop()
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Pipeline::stop ()
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{
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#ifdef Q_WS_WIN
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g_main_loop_quit(m_loop);
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g_main_loop_quit (m_loop);
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#else
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emit stopRequested();
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emit stopRequested ();
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#endif
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}
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void
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Pipeline::unconfigure()
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Pipeline::unconfigure ()
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{
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gst_element_set_state(GST_ELEMENT(this->m_pipeline), GST_STATE_NULL);
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gst_element_set_state (GST_ELEMENT (this->m_pipeline), GST_STATE_NULL);
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GstBuffer *buf;
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while(this->queue_input_buf.size())
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{
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buf = (GstBuffer*)(this->queue_input_buf.get());
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gst_buffer_unref(buf);
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}
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while(this->queue_output_buf.size())
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{
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buf = (GstBuffer*)(this->queue_output_buf.get());
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gst_buffer_unref(buf);
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}
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GstBuffer *buf;
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while (this->queue_input_buf.size ()) {
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buf = (GstBuffer *) (this->queue_input_buf.get ());
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gst_buffer_unref (buf);
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}
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while (this->queue_output_buf.size ()) {
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buf = (GstBuffer *) (this->queue_output_buf.get ());
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gst_buffer_unref (buf);
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}
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gst_object_unref(m_pipeline);
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gst_object_unref (m_pipeline);
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}
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gboolean
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Pipeline::bus_call(GstBus *bus, GstMessage *msg, Pipeline* p)
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gboolean Pipeline::bus_call (GstBus * bus, GstMessage * msg, Pipeline * p)
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{
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Q_UNUSED(bus)
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Q_UNUSED (bus)
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switch(GST_MESSAGE_TYPE(msg))
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switch (GST_MESSAGE_TYPE (msg)) {
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case GST_MESSAGE_EOS:
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qDebug ("End-of-stream received. Stopping.");
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p->stop ();
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break;
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case GST_MESSAGE_ERROR:
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{
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case GST_MESSAGE_EOS:
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qDebug("End-of-stream received. Stopping.");
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p->stop();
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break;
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case GST_MESSAGE_ERROR:
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{
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gchar *debug = NULL;
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GError *err = NULL;
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gst_message_parse_error(msg, &err, &debug);
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qDebug("Error: %s", err->message);
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g_error_free (err);
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if(debug)
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{
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qDebug("Debug deails: %s", debug);
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g_free(debug);
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}
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p->stop();
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break;
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}
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default:
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break;
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gchar *
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debug = NULL;
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GError *
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err = NULL;
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gst_message_parse_error (msg, &err, &debug);
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qDebug ("Error: %s", err->message);
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g_error_free (err);
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if (debug) {
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qDebug ("Debug deails: %s", debug);
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g_free (debug);
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}
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p->stop ();
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break;
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}
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return TRUE;
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default:
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break;
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}
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return TRUE;
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}
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gboolean Pipeline::sync_bus_call (GstBus * bus, GstMessage * msg, Pipeline * p)
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{
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switch (GST_MESSAGE_TYPE (msg)) {
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case GST_MESSAGE_NEED_CONTEXT:
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{
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const gchar *
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context_type;
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gst_message_parse_context_type (msg, &context_type);
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g_print ("got need context %s\n", context_type);
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if (g_strcmp0 (context_type, GST_GL_DISPLAY_CONTEXT_TYPE) == 0) {
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GstContext *display_context = gst_context_new (GST_GL_DISPLAY_CONTEXT_TYPE, TRUE);
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gst_context_set_gl_display (display_context, p->display);
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gst_element_set_context (GST_ELEMENT (msg->src), display_context);
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}
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break;
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}
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default:
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break;
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}
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return FALSE;
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}
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@ -34,7 +34,7 @@ class Pipeline : public QObject
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Q_OBJECT
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public:
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Pipeline(GstGLContext *context,
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Pipeline(GstGLDisplay *display, GstGLContext *context,
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const QString &videoLocation,
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QObject *parent);
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~Pipeline();
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@ -53,6 +53,7 @@ Q_SIGNALS:
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void stopRequested();
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private:
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GstGLDisplay *display;
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GstGLContext *context;
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const QString m_videoLocation;
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GMainLoop* m_loop;
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@ -64,6 +65,7 @@ private:
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static void on_gst_buffer(GstElement * element, GstBuffer * buf, GstPad * pad, Pipeline* p);
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static gboolean bus_call (GstBus *bus, GstMessage *msg, Pipeline* p);
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static gboolean sync_bus_call (GstBus *bus, GstMessage *msg, Pipeline* p);
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};
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#endif
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@ -25,220 +25,260 @@
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#include <QDebug>
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#include <QCloseEvent>
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#include <GL/glx.h>
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#include <gst/video/video.h>
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#include <gst/gl/gstglmemory.h>
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#if GST_GL_HAVE_PLATFORM_GLX
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#include <QX11Info>
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#include <gst/gl/x11/gstgldisplay_x11.h>
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#endif
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#include "gstthread.h"
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#include "qglrenderer.h"
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#include "pipeline.h"
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#include <GL/glx.h>
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#if defined(Q_WS_MAC)
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extern void *qt_current_nsopengl_context();
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extern void *qt_current_nsopengl_context ();
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#endif
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QGLRenderer::QGLRenderer(const QString &videoLocation,
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QWidget *parent)
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: QGLWidget(parent),
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videoLoc(videoLocation),
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gst_thread(NULL),
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closing(false),
|
||||
frame(NULL)
|
||||
QGLRenderer::QGLRenderer (const QString & videoLocation, QWidget * parent)
|
||||
:
|
||||
QGLWidget (parent),
|
||||
videoLoc (videoLocation),
|
||||
gst_thread (NULL),
|
||||
closing (false),
|
||||
frame (NULL)
|
||||
{
|
||||
move(20, 10);
|
||||
resize(640, 480);
|
||||
move (20, 10);
|
||||
resize (640, 480);
|
||||
}
|
||||
|
||||
QGLRenderer::~QGLRenderer()
|
||||
QGLRenderer::~QGLRenderer ()
|
||||
{
|
||||
}
|
||||
|
||||
void
|
||||
QGLRenderer::initializeGL()
|
||||
QGLRenderer::initializeGL ()
|
||||
{
|
||||
GstGLContext *context;
|
||||
GstGLDisplay *display;
|
||||
GstGLContext *context;
|
||||
GstGLDisplay *display;
|
||||
|
||||
display = gst_gl_display_new ();
|
||||
#if GST_GL_HAVE_PLATFORM_GLX
|
||||
display =
|
||||
(GstGLDisplay *) gst_gl_display_x11_new_with_display (QX11Info::
|
||||
display ());
|
||||
#else
|
||||
display = gst_gl_display_new ();
|
||||
#endif
|
||||
|
||||
/* FIXME: Allow the choice at runtime */
|
||||
/* FIXME: Allow the choice at runtime */
|
||||
#if GST_GL_HAVE_PLATFORM_WGL
|
||||
context = gst_gl_context_new_wrapped (display, (guintptr) wglGetCurrentContext (), GST_GL_PLATFORM_WGL, GST_GL_API_OPENGL);
|
||||
context =
|
||||
gst_gl_context_new_wrapped (display, (guintptr) wglGetCurrentContext (),
|
||||
GST_GL_PLATFORM_WGL, GST_GL_API_OPENGL);
|
||||
#elif GST_GL_HAVE_PLATFORM_CGL
|
||||
context = gst_gl_context_new_wrapped (display, (guintptr) qt_current_nsopengl_context(), GST_GL_PLATFORM_CGL, GST_GL_API_OPENGL);
|
||||
context =
|
||||
gst_gl_context_new_wrapped (display,
|
||||
(guintptr) qt_current_nsopengl_context (), GST_GL_PLATFORM_CGL,
|
||||
GST_GL_API_OPENGL);
|
||||
#elif GST_GL_HAVE_PLATFORM_GLX
|
||||
context = gst_gl_context_new_wrapped (display, (guintptr) glXGetCurrentContext (), GST_GL_PLATFORM_GLX, GST_GL_API_OPENGL);
|
||||
context =
|
||||
gst_gl_context_new_wrapped (display, (guintptr) glXGetCurrentContext (),
|
||||
GST_GL_PLATFORM_GLX, GST_GL_API_OPENGL);
|
||||
#endif
|
||||
gst_object_unref (display);
|
||||
gst_object_unref (display);
|
||||
|
||||
// We need to unset Qt context before initializing gst-gl plugin.
|
||||
// Otherwise the attempt to share gst-gl context with Qt will fail.
|
||||
this->doneCurrent();
|
||||
this->gst_thread =
|
||||
new GstThread(context, this->videoLoc, SLOT(newFrame()), this);
|
||||
this->makeCurrent();
|
||||
// We need to unset Qt context before initializing gst-gl plugin.
|
||||
// Otherwise the attempt to share gst-gl context with Qt will fail.
|
||||
this->doneCurrent ();
|
||||
this->gst_thread =
|
||||
new GstThread (display, context, this->videoLoc,
|
||||
SLOT (newFrame ()), this);
|
||||
this->makeCurrent ();
|
||||
|
||||
QObject::connect(this->gst_thread, SIGNAL(finished()),
|
||||
this, SLOT(close()));
|
||||
QObject::connect(this, SIGNAL(closeRequested()),
|
||||
this->gst_thread, SLOT(stop()), Qt::QueuedConnection);
|
||||
QObject::connect (this->gst_thread, SIGNAL (finished ()),
|
||||
this, SLOT (close ()));
|
||||
QObject::connect (this, SIGNAL (closeRequested ()),
|
||||
this->gst_thread, SLOT (stop ()), Qt::QueuedConnection);
|
||||
|
||||
qglClearColor(QApplication::palette().color(QPalette::Active,
|
||||
QPalette::Window));
|
||||
//glShadeModel(GL_FLAT);
|
||||
//glEnable(GL_DEPTH_TEST);
|
||||
//glEnable(GL_CULL_FACE);
|
||||
glEnable(GL_TEXTURE_2D); // Enable Texture Mapping
|
||||
qglClearColor (QApplication::palette ().color (QPalette::Active,
|
||||
QPalette::Window));
|
||||
//glShadeModel(GL_FLAT);
|
||||
//glEnable(GL_DEPTH_TEST);
|
||||
//glEnable(GL_CULL_FACE);
|
||||
glEnable (GL_TEXTURE_2D); // Enable Texture Mapping
|
||||
|
||||
this->gst_thread->start();
|
||||
this->gst_thread->start ();
|
||||
}
|
||||
|
||||
void
|
||||
QGLRenderer::resizeGL(int width, int height)
|
||||
QGLRenderer::resizeGL (int width, int height)
|
||||
{
|
||||
// Reset The Current Viewport And Perspective Transformation
|
||||
glViewport(0, 0, width, height);
|
||||
glViewport (0, 0, width, height);
|
||||
|
||||
glMatrixMode(GL_PROJECTION);
|
||||
glLoadIdentity();
|
||||
glMatrixMode (GL_PROJECTION);
|
||||
glLoadIdentity ();
|
||||
|
||||
gluPerspective(45.0f, (GLfloat)width/(GLfloat)height, 0.1f, 100.0f);
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
gluPerspective (45.0f, (GLfloat) width / (GLfloat) height, 0.1f, 100.0f);
|
||||
glMatrixMode (GL_MODELVIEW);
|
||||
}
|
||||
|
||||
void
|
||||
QGLRenderer::newFrame()
|
||||
QGLRenderer::newFrame ()
|
||||
{
|
||||
Pipeline *pipeline = this->gst_thread->getPipeline();
|
||||
if(!pipeline)
|
||||
Pipeline *pipeline = this->gst_thread->getPipeline ();
|
||||
if (!pipeline)
|
||||
return;
|
||||
|
||||
/* frame is initialized as null */
|
||||
if (this->frame)
|
||||
pipeline->queue_output_buf.put (this->frame);
|
||||
|
||||
this->frame = pipeline->queue_input_buf.get ();
|
||||
|
||||
/* direct call to paintGL (no queued) */
|
||||
this->updateGL ();
|
||||
}
|
||||
|
||||
static void
|
||||
flushGstreamerGL (GstGLContext * context, void *data G_GNUC_UNUSED)
|
||||
{
|
||||
context->gl_vtable->Flush ();
|
||||
}
|
||||
|
||||
void
|
||||
QGLRenderer::paintGL ()
|
||||
{
|
||||
static GLfloat xrot = 0;
|
||||
static GLfloat yrot = 0;
|
||||
static GLfloat zrot = 0;
|
||||
|
||||
if (this->frame) {
|
||||
guint tex_id;
|
||||
GstMemory *mem;
|
||||
GstVideoInfo v_info;
|
||||
GstVideoFrame v_frame;
|
||||
GstVideoMeta *v_meta;
|
||||
|
||||
mem = gst_buffer_peek_memory (this->frame, 0);
|
||||
v_meta = gst_buffer_get_video_meta (this->frame);
|
||||
|
||||
Q_ASSERT (gst_is_gl_memory (mem));
|
||||
|
||||
GstGLMemory *gl_memory = (GstGLMemory *) mem;
|
||||
|
||||
gst_gl_context_thread_add (gl_memory->context, flushGstreamerGL, NULL);
|
||||
|
||||
gst_video_info_set_format (&v_info, v_meta->format, v_meta->width,
|
||||
v_meta->height);
|
||||
|
||||
gst_video_frame_map (&v_frame, &v_info, this->frame,
|
||||
(GstMapFlags) (GST_MAP_READ | GST_MAP_GL));
|
||||
|
||||
tex_id = *(guint *) v_frame.data[0];
|
||||
|
||||
glEnable (GL_DEPTH_TEST);
|
||||
|
||||
glEnable (GL_TEXTURE_2D);
|
||||
glBindTexture (GL_TEXTURE_2D, tex_id);
|
||||
if (glGetError () != GL_NO_ERROR) {
|
||||
qDebug ("failed to bind texture that comes from gst-gl");
|
||||
emit closeRequested ();
|
||||
return;
|
||||
}
|
||||
|
||||
/* frame is initialized as null */
|
||||
if (this->frame)
|
||||
pipeline->queue_output_buf.put(this->frame);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
||||
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
||||
glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
|
||||
this->frame = pipeline->queue_input_buf.get();
|
||||
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
glMatrixMode (GL_MODELVIEW);
|
||||
glLoadIdentity ();
|
||||
|
||||
/* direct call to paintGL (no queued) */
|
||||
this->updateGL();
|
||||
}
|
||||
glTranslatef (0.0f, 0.0f, -5.0f);
|
||||
|
||||
static void flushGstreamerGL(GstGLContext* context,void *data){
|
||||
context->gl_vtable->Flush();
|
||||
glRotatef (xrot, 1.0f, 0.0f, 0.0f);
|
||||
glRotatef (yrot, 0.0f, 1.0f, 0.0f);
|
||||
glRotatef (zrot, 0.0f, 0.0f, 1.0f);
|
||||
|
||||
glBegin (GL_QUADS);
|
||||
// Front Face
|
||||
glTexCoord2f (1.0f, 0.0f);
|
||||
glVertex3f (-1.0f, -1.0f, 1.0f);
|
||||
glTexCoord2f (0.0f, 0.0f);
|
||||
glVertex3f (1.0f, -1.0f, 1.0f);
|
||||
glTexCoord2f (0.0f, 1.0f);
|
||||
glVertex3f (1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f (1.0f, 1.0f);
|
||||
glVertex3f (-1.0f, 1.0f, 1.0f);
|
||||
// Back Face
|
||||
glTexCoord2f (0.0f, 0.0f);
|
||||
glVertex3f (-1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f (0.0f, 1.0f);
|
||||
glVertex3f (-1.0f, 1.0f, -1.0f);
|
||||
glTexCoord2f (1.0f, 1.0f);
|
||||
glVertex3f (1.0f, 1.0f, -1.0f);
|
||||
glTexCoord2f (1.0f, 0.0f);
|
||||
glVertex3f (1.0f, -1.0f, -1.0f);
|
||||
// Top Face
|
||||
glTexCoord2f (1.0f, 1.0f);
|
||||
glVertex3f (-1.0f, 1.0f, -1.0f);
|
||||
glTexCoord2f (1.0f, 0.0f);
|
||||
glVertex3f (-1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f (0.0f, 0.0f);
|
||||
glVertex3f (1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f (0.0f, 1.0f);
|
||||
glVertex3f (1.0f, 1.0f, -1.0f);
|
||||
// Bottom Face
|
||||
glTexCoord2f (1.0f, 0.0f);
|
||||
glVertex3f (-1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f (0.0f, 0.0f);
|
||||
glVertex3f (1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f (0.0f, 1.0f);
|
||||
glVertex3f (1.0f, -1.0f, 1.0f);
|
||||
glTexCoord2f (1.0f, 1.0f);
|
||||
glVertex3f (-1.0f, -1.0f, 1.0f);
|
||||
// Right face
|
||||
glTexCoord2f (0.0f, 0.0f);
|
||||
glVertex3f (1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f (0.0f, 1.0f);
|
||||
glVertex3f (1.0f, 1.0f, -1.0f);
|
||||
glTexCoord2f (1.0f, 1.0f);
|
||||
glVertex3f (1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f (1.0f, 0.0f);
|
||||
glVertex3f (1.0f, -1.0f, 1.0f);
|
||||
// Left Face
|
||||
glTexCoord2f (1.0f, 0.0f);
|
||||
glVertex3f (-1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f (0.0f, 0.0f);
|
||||
glVertex3f (-1.0f, -1.0f, 1.0f);
|
||||
glTexCoord2f (0.0f, 1.0f);
|
||||
glVertex3f (-1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f (1.0f, 1.0f);
|
||||
glVertex3f (-1.0f, 1.0f, -1.0f);
|
||||
glEnd ();
|
||||
|
||||
xrot += 0.3f;
|
||||
yrot += 0.2f;
|
||||
zrot += 0.4f;
|
||||
|
||||
glBindTexture (GL_TEXTURE_2D, 0);
|
||||
|
||||
gst_video_frame_unmap (&v_frame);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
QGLRenderer::paintGL()
|
||||
QGLRenderer::closeEvent (QCloseEvent * event)
|
||||
{
|
||||
static GLfloat xrot = 0;
|
||||
static GLfloat yrot = 0;
|
||||
static GLfloat zrot = 0;
|
||||
|
||||
if (this->frame)
|
||||
{
|
||||
guint tex_id;
|
||||
GstMemory *mem;
|
||||
GstVideoInfo v_info;
|
||||
GstVideoFrame v_frame;
|
||||
GstVideoMeta *v_meta;
|
||||
|
||||
mem = gst_buffer_peek_memory (this->frame, 0);
|
||||
v_meta = gst_buffer_get_video_meta (this->frame);
|
||||
|
||||
Q_ASSERT(gst_is_gl_memory (mem));
|
||||
|
||||
GstGLMemory *gl_memory=(GstGLMemory*)mem;
|
||||
|
||||
gst_gl_context_thread_add(gl_memory->context,flushGstreamerGL,NULL);
|
||||
|
||||
gst_video_info_set_format (&v_info, v_meta->format, v_meta->width,
|
||||
v_meta->height);
|
||||
|
||||
gst_video_frame_map (&v_frame, &v_info, this->frame,
|
||||
(GstMapFlags) (GST_MAP_READ | GST_MAP_GL));
|
||||
|
||||
tex_id = *(guint *) v_frame.data[0];
|
||||
|
||||
glEnable(GL_DEPTH_TEST);
|
||||
|
||||
glEnable(GL_TEXTURE_2D);
|
||||
glBindTexture(GL_TEXTURE_2D, tex_id);
|
||||
if(glGetError () != GL_NO_ERROR)
|
||||
{
|
||||
qDebug ("failed to bind texture that comes from gst-gl");
|
||||
emit closeRequested();
|
||||
return;
|
||||
}
|
||||
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S,
|
||||
GL_CLAMP_TO_EDGE);
|
||||
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T,
|
||||
GL_CLAMP_TO_EDGE);
|
||||
glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
|
||||
|
||||
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
||||
glMatrixMode(GL_MODELVIEW);
|
||||
glLoadIdentity();
|
||||
|
||||
glTranslatef(0.0f,0.0f,-5.0f);
|
||||
|
||||
glRotatef(xrot,1.0f,0.0f,0.0f);
|
||||
glRotatef(yrot,0.0f,1.0f,0.0f);
|
||||
glRotatef(zrot,0.0f,0.0f,1.0f);
|
||||
|
||||
glBegin(GL_QUADS);
|
||||
// Front Face
|
||||
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
|
||||
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
|
||||
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
|
||||
// Back Face
|
||||
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
|
||||
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
|
||||
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
|
||||
// Top Face
|
||||
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
|
||||
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
|
||||
// Bottom Face
|
||||
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
|
||||
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
|
||||
// Right face
|
||||
glTexCoord2f(0.0f, 0.0f); glVertex3f( 1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f(0.0f, 1.0f); glVertex3f( 1.0f, 1.0f, -1.0f);
|
||||
glTexCoord2f(1.0f, 1.0f); glVertex3f( 1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f(1.0f, 0.0f); glVertex3f( 1.0f, -1.0f, 1.0f);
|
||||
// Left Face
|
||||
glTexCoord2f(1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, -1.0f);
|
||||
glTexCoord2f(0.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 1.0f);
|
||||
glTexCoord2f(0.0f, 1.0f); glVertex3f(-1.0f, 1.0f, 1.0f);
|
||||
glTexCoord2f(1.0f, 1.0f); glVertex3f(-1.0f, 1.0f, -1.0f);
|
||||
glEnd();
|
||||
|
||||
xrot+=0.3f;
|
||||
yrot+=0.2f;
|
||||
zrot+=0.4f;
|
||||
|
||||
glBindTexture(GL_TEXTURE_2D, 0);
|
||||
|
||||
gst_video_frame_unmap(&v_frame);
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
QGLRenderer::closeEvent(QCloseEvent* event)
|
||||
{
|
||||
if(this->closing == false)
|
||||
{
|
||||
this->closing = true;
|
||||
emit closeRequested();
|
||||
event->ignore();
|
||||
}
|
||||
if (this->closing == false) {
|
||||
this->closing = true;
|
||||
emit closeRequested ();
|
||||
event->ignore ();
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -37,6 +37,7 @@ unix:!mac {
|
|||
-lgstgl-1.0 \
|
||||
-lGLU \
|
||||
-lGL
|
||||
QT += x11extras
|
||||
}
|
||||
mac {
|
||||
DEFINES += MACOSX
|
||||
|
|
|
|||
Loading…
Reference in a new issue