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Move qt plugin from -bad

Browse source 
https://bugzilla.gnome.org/show_bug.cgi?id=754094
This commit is contained in:
Tim-Philipp Müller 2018-02-12 18:13:17 +00:00
commit 6c75e6c5e0
28 changed files with 3487 additions and 0 deletions
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1
ext/qt/.gitignore vendored Normal file
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moc_*.cc

60
ext/qt/Makefile.am Normal file
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plugin_LTLIBRARIES = libgstqmlgl.la
noinst_HEADERS = \
gstqsgtexture.h \
gstqtglutility.h \
gstqtsink.h \
gstqtsrc.h \
qtitem.h \
qtwindow.h
moc_generated = \
moc_qtitem.cc \
moc_qtwindow.cc \
moc_gstqsgtexture.cc
#anything generated by the Qt tools...
BUILT_SOURCES = $(moc_generated)
CLEANFILES = $(moc_generated)
nodist_libgstqmlgl_la_SOURCES = $(BUILT_SOURCES)
libgstqmlgl_la_SOURCES = \
gstqsgtexture.cc \
gstqtglutility.cc \
qtitem.cc \
qtwindow.cc \
gstqtsink.cc \
gstqtsink.h \
gstqtsrc.cc \
gstqtsrc.h \
gstqtgl.h \
gstplugin.cc
libgstqmlgl_la_CXXFLAGS = \
$(GST_PLUGINS_BAD_CFLAGS) \
$(GST_PLUGINS_BASE_CFLAGS) \
$(GST_GL_CFLAGS) \
$(GST_BASE_CFLAGS) \
$(GST_CXXFLAGS) \
$(QT_CFLAGS) \
$(GL_CFLAGS) -std=c++11
libgstqmlgl_la_LIBADD = \
$(GST_PLUGINS_BASE_LIBS) \
$(GST_GL_LIBS) \
-lgstvideo-$(GST_API_VERSION) \
$(GST_BASE_LIBS) \
$(QT_LIBS)
libgstqmlgl_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
$(moc_generated): moc_%.cc: %.h
@MOC@ -o $@ $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(MOC_CPPFLAGS) $<
ui-%.h: %.ui
@UIC@ -o $@ $<
qrc-%.cc: %.qrc
@RCC@ -o $@ $<

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstqtsink.h"
#include "gstqtsrc.h"
#include <QtQml/QQmlApplicationEngine>
static gboolean
plugin_init (GstPlugin * plugin)
{
if (!gst_element_register (plugin, "qmlglsink",
GST_RANK_NONE, GST_TYPE_QT_SINK)) {
return FALSE;
}
if (!gst_element_register (plugin, "qmlglsrc",
GST_RANK_NONE, GST_TYPE_QT_SRC)) {
return FALSE;
}
/* this means the plugin must be loaded before the qml engine is loaded */
qmlRegisterType<QtGLVideoItem> ("org.freedesktop.gstreamer.GLVideoItem", 1, 0, "GstGLVideoItem");
return TRUE;
}
#ifndef GST_PACKAGE_NAME
#define GST_PACKAGE_NAME "GStreamer Bad Plug-ins (qmake)"
#define GST_PACKAGE_ORIGIN "Unknown package origin"
#define GST_LICENSE "LGPL"
#define PACKAGE "gst-plugins-bad (qmake)"
#define PACKAGE_VERSION "1.13.0.1"
#endif
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
qmlgl,
"Qt gl plugin",
plugin_init, PACKAGE_VERSION, GST_LICENSE, GST_PACKAGE_NAME,
GST_PACKAGE_ORIGIN)

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <vector>
#include <stdio.h>
#include <gst/video/video.h>
#include <gst/gl/gl.h>
#include <gst/gl/gstglfuncs.h>
#include "gstqsgtexture.h"
#define GST_CAT_DEFAULT gst_qsg_texture_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
GstQSGTexture::GstQSGTexture ()
{
static volatile gsize _debug;
initializeOpenGLFunctions();
if (g_once_init_enter (&_debug)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "qtqsgtexture", 0,
"Qt Scenegraph Texture");
g_once_init_leave (&_debug, 1);
}
gst_video_info_init (&this->v_info);
this->buffer_ = NULL;
this->qt_context_ = NULL;
this->sync_buffer_ = gst_buffer_new ();
this->dummy_tex_id_ = 0;
}
GstQSGTexture::~GstQSGTexture ()
{
gst_buffer_replace (&this->buffer_, NULL);
gst_buffer_replace (&this->sync_buffer_, NULL);
if (this->dummy_tex_id_ && QOpenGLContext::currentContext ()) {
QOpenGLContext::currentContext ()->functions ()->glDeleteTextures (1,
&this->dummy_tex_id_);
}
}
/* only called from the streaming thread with scene graph thread blocked */
void
GstQSGTexture::setCaps (GstCaps * caps)
{
GST_LOG ("%p setCaps %" GST_PTR_FORMAT, this, caps);
gst_video_info_from_caps (&this->v_info, caps);
}
/* only called from the streaming thread with scene graph thread blocked */
gboolean
GstQSGTexture::setBuffer (GstBuffer * buffer)
{
GST_LOG ("%p setBuffer %" GST_PTR_FORMAT, this, buffer);
/* FIXME: update more state here */
if (!gst_buffer_replace (&this->buffer_, buffer))
return FALSE;
this->qt_context_ = gst_gl_context_get_current ();
return TRUE;
}
/* only called from qt's scene graph render thread */
void
GstQSGTexture::bind ()
{
const GstGLFuncs *gl;
GstGLContext *context;
GstGLSyncMeta *sync_meta;
GstMemory *mem;
guint tex_id;
gboolean use_dummy_tex = TRUE;
if (!this->qt_context_)
return;
gst_gl_context_activate (this->qt_context_, TRUE);
if (!this->buffer_)
goto out;
if (GST_VIDEO_INFO_FORMAT (&this->v_info) == GST_VIDEO_FORMAT_UNKNOWN)
goto out;
this->mem_ = gst_buffer_peek_memory (this->buffer_, 0);
if (!this->mem_)
goto out;
g_assert (this->qt_context_);
gl = this->qt_context_->gl_vtable;
/* FIXME: should really lock the memory to prevent write access */
if (!gst_video_frame_map (&this->v_frame, &this->v_info, this->buffer_,
(GstMapFlags) (GST_MAP_READ | GST_MAP_GL))) {
g_assert_not_reached ();
goto out;
}
mem = gst_buffer_peek_memory (this->buffer_, 0);
g_assert (gst_is_gl_memory (mem));
context = ((GstGLBaseMemory *)mem)->context;
sync_meta = gst_buffer_get_gl_sync_meta (this->sync_buffer_);
if (!sync_meta)
sync_meta = gst_buffer_add_gl_sync_meta (context, this->sync_buffer_);
gst_gl_sync_meta_set_sync_point (sync_meta, context);
gst_gl_sync_meta_wait (sync_meta, this->qt_context_);
tex_id = *(guint *) this->v_frame.data[0];
GST_LOG ("%p binding Qt texture %u", this, tex_id);
gl->BindTexture (GL_TEXTURE_2D, tex_id);
gst_video_frame_unmap (&this->v_frame);
/* Texture was successfully bound, so we do not need
* to use the dummy texture */
use_dummy_tex = FALSE;
out:
if (G_UNLIKELY (use_dummy_tex)) {
QOpenGLContext *qglcontext = QOpenGLContext::currentContext ();
QOpenGLFunctions *funcs = qglcontext->functions ();
/* Create dummy texture if not already present.
* Use the Qt OpenGL functions instead of the GstGL ones,
* since we are using the Qt OpenGL context here, and we must
* be able to delete the texture in the destructor. */
if (this->dummy_tex_id_ == 0) {
/* Make this a black 64x64 pixel RGBA texture.
* This size and format is supported pretty much everywhere, so these
* are a safe pick. (64 pixel sidelength must be supported according
* to the GLES2 spec, table 6.18.)
* Set min/mag filters to GL_LINEAR to make sure no mipmapping is used. */
const int tex_sidelength = 64;
std::vector < guint8 > dummy_data (tex_sidelength * tex_sidelength * 4, 0);
funcs->glGenTextures (1, &this->dummy_tex_id_);
funcs->glBindTexture (GL_TEXTURE_2D, this->dummy_tex_id_);
funcs->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
funcs->glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
funcs->glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, tex_sidelength,
tex_sidelength, 0, GL_RGBA, GL_UNSIGNED_BYTE, &dummy_data[0]);
}
g_assert (this->dummy_tex_id_ != 0);
funcs->glBindTexture (GL_TEXTURE_2D, this->dummy_tex_id_);
}
gst_gl_context_activate (this->qt_context_, FALSE);
}
/* can be called from any thread */
int
GstQSGTexture::textureId () const
{
int tex_id = 0;
if (this->buffer_) {
GstMemory *mem = gst_buffer_peek_memory (this->buffer_, 0);
tex_id = ((GstGLMemory *) mem)->tex_id;
}
GST_LOG ("%p get texture id %u", this, tex_id);
return tex_id;
}
/* can be called from any thread */
QSize
GstQSGTexture::textureSize () const
{
if (GST_VIDEO_INFO_FORMAT (&this->v_info) == GST_VIDEO_FORMAT_UNKNOWN)
return QSize (0, 0);
GST_TRACE ("%p get texture size %ux%u", this, this->v_info.width,
this->v_info.height);
return QSize (this->v_info.width, this->v_info.height);
}
/* can be called from any thread */
bool
GstQSGTexture::hasAlphaChannel () const
{
/* FIXME: support RGB textures */
return true;
}
/* can be called from any thread */
bool
GstQSGTexture::hasMipmaps () const
{
return false;
}

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_QSG_TEXTURE_H__
#define __GST_QSG_TEXTURE_H__
#include <gst/gst.h>
#include <gst/video/video.h>
#include <gst/gl/gl.h>
#include "gstqtgl.h"
#include <QtQuick/QSGTexture>
#include <QtGui/QOpenGLFunctions>
class GstQSGTexture : public QSGTexture, protected QOpenGLFunctions
{
Q_OBJECT
public:
GstQSGTexture ();
~GstQSGTexture ();
void setCaps (GstCaps * caps);
gboolean setBuffer (GstBuffer * buffer);
/* QSGTexture */
void bind ();
int textureId () const;
QSize textureSize () const;
bool hasAlphaChannel () const;
bool hasMipmaps () const;
private:
GstBuffer * buffer_;
GstBuffer * sync_buffer_;
GstGLContext * qt_context_;
GstMemory * mem_;
GLuint dummy_tex_id_;
GstVideoInfo v_info;
GstVideoFrame v_frame;
};
#endif /* __GST_QSG_TEXTURE_H__ */

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/* qt uses the same trick as us to typedef GLsync on gles2 but to a different
* type which confuses the preprocessor. As it's never actually used by qt
* public headers, define it to something else to avoid redefinition
* warnings/errors */
#include <gst/gl/gstglconfig.h>
#include <QtCore/qglobal.h>
#if (QT_VERSION >= QT_VERSION_CHECK(5, 9, 0))
#include <QtGui/qtgui-config.h>
#endif
#if defined(QT_OPENGL_ES_2) && GST_GL_HAVE_WINDOW_ANDROID
#define GLsync gst_qt_GLsync
#include <QOpenGLContext>
#include <QOpenGLFunctions>
#undef GLsync
#endif /* defined(QT_OPENGL_ES_2) */

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/*
* GStreamer
* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstqtglutility.h"
#include <QtGui/QGuiApplication>
#if GST_GL_HAVE_WINDOW_X11 && defined (HAVE_QT_X11)
#include <QX11Info>
#include <gst/gl/x11/gstgldisplay_x11.h>
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_WAYLAND)
#include <qpa/qplatformnativeinterface.h>
#include <gst/gl/wayland/gstgldisplay_wayland.h>
#endif
#if GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_EGLFS)
#if GST_GL_HAVE_WINDOW_VIV_FB
#include <qpa/qplatformnativeinterface.h>
#include <gst/gl/viv-fb/gstgldisplay_viv_fb.h>
#else
#include <gst/gl/egl/gstegl.h>
#include <gst/gl/egl/gstgldisplay_egl.h>
#endif
#endif
#define GST_CAT_DEFAULT qt_gl_utils_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
GstGLDisplay *
gst_qt_get_gl_display ()
{
GstGLDisplay *display = NULL;
QGuiApplication *app = static_cast<QGuiApplication *> (QCoreApplication::instance ());
static volatile gsize _debug;
g_assert (app != NULL);
if (g_once_init_enter (&_debug)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "qtglutility", 0,
"Qt gl utility functions");
g_once_init_leave (&_debug, 1);
}
GST_INFO ("QGuiApplication::instance()->platformName() %s", app->platformName().toUtf8().data());
#if GST_GL_HAVE_WINDOW_X11 && defined (HAVE_QT_X11)
if (QString::fromUtf8 ("xcb") == app->platformName())
display = (GstGLDisplay *)
gst_gl_display_x11_new_with_display (QX11Info::display ());
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND && GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_WAYLAND)
if (QString::fromUtf8 ("wayland") == app->platformName()
|| QString::fromUtf8 ("wayland-egl") == app->platformName()){
struct wl_display * wayland_display;
QPlatformNativeInterface *native =
QGuiApplication::platformNativeInterface();
wayland_display = (struct wl_display *)
native->nativeResourceForWindow("display", NULL);
display = (GstGLDisplay *)
gst_gl_display_wayland_new_with_display (wayland_display);
}
#endif
#if GST_GL_HAVE_PLATFORM_EGL && GST_GL_HAVE_WINDOW_ANDROID
if (QString::fromUtf8 ("android") == app->platformName())
display = (GstGLDisplay *) gst_gl_display_egl_new_with_egl_display (eglGetDisplay(EGL_DEFAULT_DISPLAY));
#elif GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_EGLFS)
if (QString::fromUtf8("eglfs") == app->platformName()) {
#if GST_GL_HAVE_WINDOW_VIV_FB
/* FIXME: Could get the display directly from Qt like this
QPlatformNativeInterface *native =
QGuiApplication::platformNativeInterface();
EGLDisplay egl_display = (EGLDisplay)
native->nativeResourceForWindow("egldisplay", NULL);
However we seem to have no way for getting the EGLNativeDisplayType, aka
native_display, via public API. As such we have to assume that display 0
is always used. Only way around that is parsing the index the same way as
Qt does in QEGLDeviceIntegration::fbDeviceName(), so let's do that.
*/
const gchar *fb_dev;
gint disp_idx = 0;
fb_dev = g_getenv ("QT_QPA_EGLFS_FB");
if (fb_dev) {
if (sscanf (fb_dev, "/dev/fb%d", &disp_idx) != 1)
disp_idx = 0;
}
display = (GstGLDisplay *) gst_gl_display_viv_fb_new (disp_idx);
#else
display = (GstGLDisplay *) gst_gl_display_egl_new_with_egl_display (eglGetDisplay(EGL_DEFAULT_DISPLAY));
#endif
}
#endif
#if GST_GL_HAVE_WINDOW_COCOA && GST_GL_HAVE_PLATFORM_CGL && defined (HAVE_QT_MAC)
if (QString::fromUtf8 ("cocoa") == app->platformName())
display = (GstGLDisplay *) gst_gl_display_new ();
#endif
#if GST_GL_HAVE_WINDOW_EAGL && GST_GL_HAVE_PLATFORM_EAGL && defined (HAVE_QT_IOS)
if (QString::fromUtf8 ("ios") == app->platformName())
display = gst_gl_display_new ();
#endif
#if GST_GL_HAVE_WINDOW_WIN32 && GST_GL_HAVE_PLATFORM_WGL && defined (HAVE_QT_WIN32)
if (QString::fromUtf8 ("windows") == app->platformName())
display = gst_gl_display_new ();
#endif
if (!display)
display = gst_gl_display_new ();
return display;
}
gboolean
gst_qt_get_gl_wrapcontext (GstGLDisplay * display,
GstGLContext **wrap_glcontext, GstGLContext **context)
{
GstGLPlatform platform = (GstGLPlatform) 0;
GstGLAPI gl_api;
guintptr gl_handle;
GError *error = NULL;
g_return_val_if_fail (display != NULL && wrap_glcontext != NULL, FALSE);
#if GST_GL_HAVE_WINDOW_X11 && defined (HAVE_QT_X11)
if (GST_IS_GL_DISPLAY_X11 (display)) {
#if GST_GL_HAVE_PLATFORM_GLX
platform = GST_GL_PLATFORM_GLX;
#elif GST_GL_HAVE_PLATFORM_EGL
platform = GST_GL_PLATFORM_EGL;
#endif
}
#endif
#if GST_GL_HAVE_WINDOW_WAYLAND && defined (HAVE_QT_WAYLAND)
if (GST_IS_GL_DISPLAY_WAYLAND (display)) {
platform = GST_GL_PLATFORM_EGL;
}
#endif
#if GST_GL_HAVE_PLATFORM_EGL && defined (HAVE_QT_EGLFS)
#if GST_GL_HAVE_WINDOW_VIV_FB
if (GST_IS_GL_DISPLAY_VIV_FB (display)) {
#else
if (GST_IS_GL_DISPLAY_EGL (display)) {
#endif
platform = GST_GL_PLATFORM_EGL;
}
#endif
if (platform == 0) {
#if GST_GL_HAVE_WINDOW_COCOA && GST_GL_HAVE_PLATFORM_CGL && defined (HAVE_QT_MAC)
platform = GST_GL_PLATFORM_CGL;
#elif GST_GL_HAVE_WINDOW_EAGL && GST_GL_HAVE_PLATFORM_EAGL && defined (HAVE_QT_IOS)
platform = GST_GL_PLATFORM_EAGL;
#elif GST_GL_HAVE_WINDOW_WIN32 && GST_GL_HAVE_PLATFORM_WGL && defined (HAVE_QT_WIN32)
platform = GST_GL_PLATFORM_WGL;
#else
GST_ERROR ("Unknown platform");
return FALSE;
#endif
}
gl_api = gst_gl_context_get_current_gl_api (platform, NULL, NULL);
gl_handle = gst_gl_context_get_current_gl_context (platform);
if (gl_handle)
*wrap_glcontext =
gst_gl_context_new_wrapped (display, gl_handle,
platform, gl_api);
if (!*wrap_glcontext) {
GST_ERROR ("cannot wrap qt OpenGL context");
return FALSE;
}
(void) platform;
(void) gl_api;
(void) gl_handle;
gst_gl_context_activate (*wrap_glcontext, TRUE);
if (!gst_gl_context_fill_info (*wrap_glcontext, &error)) {
GST_ERROR ("failed to retrieve qt context info: %s", error->message);
g_object_unref (*wrap_glcontext);
*wrap_glcontext = NULL;
return FALSE;
} else {
gst_gl_display_filter_gl_api (display, gst_gl_context_get_gl_api (*wrap_glcontext));
#if GST_GL_HAVE_WINDOW_WIN32 && GST_GL_HAVE_PLATFORM_WGL && defined (HAVE_QT_WIN32)
g_return_val_if_fail (context != NULL, FALSE);
G_STMT_START {
GstGLWindow *window;
HDC device;
/* If there's no wglCreateContextAttribsARB() support, then we would fallback to
* wglShareLists() which will fail with ERROR_BUSY (0xaa) if either of the GL
* contexts are current in any other thread.
*
* The workaround here is to temporarily disable Qt's GL context while we
* set up our own.
*
* Sometimes wglCreateContextAttribsARB()
* exists, but isn't functional (some Intel drivers), so it's easiest to do this
* unconditionally.
*/
*context = gst_gl_context_new (display);
window = gst_gl_context_get_window (*context);
device = (HDC) gst_gl_window_get_display (window);
wglMakeCurrent (device, 0);
gst_object_unref (window);
if (!gst_gl_context_create (*context, *wrap_glcontext, &error)) {
GST_ERROR ("%p failed to create shared GL context: %s", this, error->message);
g_object_unref (*context);
*context = NULL;
g_object_unref (*wrap_glcontext);
*wrap_glcontext = NULL;
wglMakeCurrent (device, (HGLRC) gl_handle);
return FALSE;
}
wglMakeCurrent (device, (HGLRC) gl_handle);
}
#endif
gst_gl_context_activate (*wrap_glcontext, FALSE);
} G_STMT_END;
return TRUE;
}

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/*
* GStreamer
* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __QT_GL_UTILS_H__
#define __QT_GL_UTILS_H__
#include <gst/gst.h>
#include <gst/gl/gl.h>
G_BEGIN_DECLS
GstGLDisplay * gst_qt_get_gl_display ();
gboolean gst_qt_get_gl_wrapcontext (GstGLDisplay * display,
GstGLContext **wrap_glcontext, GstGLContext **context);
G_END_DECLS
#endif /* __QT_GL_UTILS_H__ */

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:gstqtsink
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstqtsink.h"
#include <QtGui/QGuiApplication>
#include <gst/gl/gstglfuncs.h>
#define GST_CAT_DEFAULT gst_debug_qt_gl_sink
GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
static void gst_qt_sink_finalize (GObject * object);
static void gst_qt_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * param_spec);
static void gst_qt_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * param_spec);
static gboolean gst_qt_sink_stop (GstBaseSink * bsink);
static gboolean gst_qt_sink_query (GstBaseSink * bsink, GstQuery * query);
static GstStateChangeReturn
gst_qt_sink_change_state (GstElement * element, GstStateChange transition);
static void gst_qt_sink_get_times (GstBaseSink * bsink, GstBuffer * buf,
GstClockTime * start, GstClockTime * end);
static gboolean gst_qt_sink_set_caps (GstBaseSink * bsink, GstCaps * caps);
static GstFlowReturn gst_qt_sink_show_frame (GstVideoSink * bsink,
GstBuffer * buf);
static gboolean gst_qt_sink_propose_allocation (GstBaseSink * bsink,
GstQuery * query);
static GstStaticPadTemplate gst_qt_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "
"format = (string) RGBA, "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", "
"framerate = " GST_VIDEO_FPS_RANGE ", "
"texture-target = (string) 2D"));
#define DEFAULT_FORCE_ASPECT_RATIO TRUE
#define DEFAULT_PAR_N 0
#define DEFAULT_PAR_D 1
enum
{
ARG_0,
PROP_WIDGET,
PROP_FORCE_ASPECT_RATIO,
PROP_PIXEL_ASPECT_RATIO,
};
enum
{
SIGNAL_0,
LAST_SIGNAL
};
#define gst_qt_sink_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstQtSink, gst_qt_sink,
GST_TYPE_VIDEO_SINK, GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
"qtsink", 0, "Qt Video Sink"));
static void
gst_qt_sink_class_init (GstQtSinkClass * klass)
{
GObjectClass *gobject_class;
GstElementClass *gstelement_class;
GstBaseSinkClass *gstbasesink_class;
GstVideoSinkClass *gstvideosink_class;
gobject_class = (GObjectClass *) klass;
gstelement_class = (GstElementClass *) klass;
gstbasesink_class = (GstBaseSinkClass *) klass;
gstvideosink_class = (GstVideoSinkClass *) klass;
gobject_class->set_property = gst_qt_sink_set_property;
gobject_class->get_property = gst_qt_sink_get_property;
gst_element_class_set_metadata (gstelement_class, "Qt Video Sink",
"Sink/Video", "A video sink that renders to a QQuickItem",
"Matthew Waters <matthew@centricular.com>");
g_object_class_install_property (gobject_class, PROP_WIDGET,
g_param_spec_pointer ("widget", "QQuickItem",
"The QQuickItem to place in the object hierarchy",
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_FORCE_ASPECT_RATIO,
g_param_spec_boolean ("force-aspect-ratio",
"Force aspect ratio",
"When enabled, scaling will respect original aspect ratio",
DEFAULT_FORCE_ASPECT_RATIO,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_PIXEL_ASPECT_RATIO,
gst_param_spec_fraction ("pixel-aspect-ratio", "Pixel Aspect Ratio",
"The pixel aspect ratio of the device", DEFAULT_PAR_N, DEFAULT_PAR_D,
G_MAXINT, 1, 1, 1,
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
gst_element_class_add_static_pad_template (gstelement_class, &gst_qt_sink_template);
gobject_class->finalize = gst_qt_sink_finalize;
gstelement_class->change_state = gst_qt_sink_change_state;
gstbasesink_class->query = gst_qt_sink_query;
gstbasesink_class->set_caps = gst_qt_sink_set_caps;
gstbasesink_class->get_times = gst_qt_sink_get_times;
gstbasesink_class->propose_allocation = gst_qt_sink_propose_allocation;
gstbasesink_class->stop = gst_qt_sink_stop;
gstvideosink_class->show_frame = gst_qt_sink_show_frame;
}
static void
gst_qt_sink_init (GstQtSink * qt_sink)
{
qt_sink->widget = QSharedPointer<QtGLVideoItemInterface>();
}
static void
gst_qt_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstQtSink *qt_sink = GST_QT_SINK (object);
switch (prop_id) {
case PROP_WIDGET: {
QtGLVideoItem *qt_item = static_cast<QtGLVideoItem *> (g_value_get_pointer (value));
if (qt_item)
qt_sink->widget = qt_item->getInterface();
else
qt_sink->widget.clear();
break;
}
case PROP_FORCE_ASPECT_RATIO:
g_return_if_fail (qt_sink->widget);
qt_sink->widget->setForceAspectRatio (g_value_get_boolean (value));
break;
case PROP_PIXEL_ASPECT_RATIO:
g_return_if_fail (qt_sink->widget);
qt_sink->widget->setDAR (gst_value_get_fraction_numerator (value),
gst_value_get_fraction_denominator (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
_reset (GstQtSink * qt_sink)
{
if (qt_sink->display) {
gst_object_unref (qt_sink->display);
qt_sink->display = NULL;
}
if (qt_sink->context) {
gst_object_unref (qt_sink->context);
qt_sink->context = NULL;
}
if (qt_sink->qt_context) {
gst_object_unref (qt_sink->qt_context);
qt_sink->qt_context = NULL;
}
}
static void
gst_qt_sink_finalize (GObject * object)
{
GstQtSink *qt_sink = GST_QT_SINK (object);
_reset (qt_sink);
qt_sink->widget.clear();
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gst_qt_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstQtSink *qt_sink = GST_QT_SINK (object);
switch (prop_id) {
case PROP_WIDGET:
/* This is not really safe - the app needs to be
* sure the widget is going to be kept alive or
* this can crash */
if (qt_sink->widget)
g_value_set_pointer (value, qt_sink->widget->videoItem());
else
g_value_set_pointer (value, NULL);
break;
case PROP_FORCE_ASPECT_RATIO:
if (qt_sink->widget)
g_value_set_boolean (value, qt_sink->widget->getForceAspectRatio ());
else
g_value_set_boolean (value, DEFAULT_FORCE_ASPECT_RATIO);
break;
case PROP_PIXEL_ASPECT_RATIO:
if (qt_sink->widget) {
gint num, den;
qt_sink->widget->getDAR (&num, &den);
gst_value_set_fraction (value, num, den);
} else {
gst_value_set_fraction (value, DEFAULT_PAR_N, DEFAULT_PAR_D);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static gboolean
gst_qt_sink_query (GstBaseSink * bsink, GstQuery * query)
{
GstQtSink *qt_sink = GST_QT_SINK (bsink);
gboolean res = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
{
if (gst_gl_handle_context_query ((GstElement *) qt_sink, query,
qt_sink->display, qt_sink->context, qt_sink->qt_context))
return TRUE;
/* fallthrough */
}
default:
res = GST_BASE_SINK_CLASS (parent_class)->query (bsink, query);
break;
}
return res;
}
static gboolean
gst_qt_sink_stop (GstBaseSink * bsink)
{
return TRUE;
}
static GstStateChangeReturn
gst_qt_sink_change_state (GstElement * element, GstStateChange transition)
{
GstQtSink *qt_sink = GST_QT_SINK (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
QGuiApplication *app;
GST_DEBUG ("changing state: %s => %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
app = static_cast<QGuiApplication *> (QCoreApplication::instance ());
if (!app) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
("%s", "Failed to connect to Qt"),
("%s", "Could not retrieve QGuiApplication instance"));
return GST_STATE_CHANGE_FAILURE;
}
if (!qt_sink->widget) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
("%s", "Required property \'widget\' not set"),
(NULL));
return GST_STATE_CHANGE_FAILURE;
}
if (!qt_sink->widget->initWinSys()) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
("%s", "Could not initialize window system"),
(NULL));
return GST_STATE_CHANGE_FAILURE;
}
qt_sink->display = qt_sink->widget->getDisplay();
qt_sink->context = qt_sink->widget->getContext();
qt_sink->qt_context = qt_sink->widget->getQtContext();
if (!qt_sink->display || !qt_sink->context || !qt_sink->qt_context) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
("%s", "Could not retrieve window system OpenGL configuration"),
(NULL));
return GST_STATE_CHANGE_FAILURE;
}
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
if (qt_sink->widget)
qt_sink->widget->setBuffer(NULL);
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static void
gst_qt_sink_get_times (GstBaseSink * bsink, GstBuffer * buf,
GstClockTime * start, GstClockTime * end)
{
GstQtSink *qt_sink;
qt_sink = GST_QT_SINK (bsink);
if (GST_BUFFER_TIMESTAMP_IS_VALID (buf)) {
*start = GST_BUFFER_TIMESTAMP (buf);
if (GST_BUFFER_DURATION_IS_VALID (buf))
*end = *start + GST_BUFFER_DURATION (buf);
else {
if (GST_VIDEO_INFO_FPS_N (&qt_sink->v_info) > 0) {
*end = *start +
gst_util_uint64_scale_int (GST_SECOND,
GST_VIDEO_INFO_FPS_D (&qt_sink->v_info),
GST_VIDEO_INFO_FPS_N (&qt_sink->v_info));
}
}
}
}
gboolean
gst_qt_sink_set_caps (GstBaseSink * bsink, GstCaps * caps)
{
GstQtSink *qt_sink = GST_QT_SINK (bsink);
GST_DEBUG ("set caps with %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&qt_sink->v_info, caps))
return FALSE;
if (!qt_sink->widget)
return FALSE;
return qt_sink->widget->setCaps(caps);
}
static GstFlowReturn
gst_qt_sink_show_frame (GstVideoSink * vsink, GstBuffer * buf)
{
GstQtSink *qt_sink;
GST_TRACE ("rendering buffer:%p", buf);
qt_sink = GST_QT_SINK (vsink);
if (qt_sink->widget)
qt_sink->widget->setBuffer(buf);
return GST_FLOW_OK;
}
static gboolean
gst_qt_sink_propose_allocation (GstBaseSink * bsink, GstQuery * query)
{
GstQtSink *qt_sink = GST_QT_SINK (bsink);
GstBufferPool *pool;
GstStructure *config;
GstCaps *caps;
guint size;
gboolean need_pool;
if (!qt_sink->display || !qt_sink->context)
return FALSE;
gst_query_parse_allocation (query, &caps, &need_pool);
if (caps == NULL)
goto no_caps;
/* FIXME re-using buffer pool breaks renegotiation */
if ((pool = qt_sink->pool))
gst_object_ref (pool);
if (pool != NULL) {
GstCaps *pcaps;
/* we had a pool, check caps */
GST_DEBUG_OBJECT (qt_sink, "check existing pool caps");
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_get_params (config, &pcaps, &size, NULL, NULL);
if (!gst_caps_is_equal (caps, pcaps)) {
GST_DEBUG_OBJECT (qt_sink, "pool has different caps");
/* different caps, we can't use this pool */
gst_object_unref (pool);
pool = NULL;
}
gst_structure_free (config);
} else {
GstVideoInfo info;
if (!gst_video_info_from_caps (&info, caps))
goto invalid_caps;
/* the normal size of a frame */
size = info.size;
}
if (pool == NULL && need_pool) {
GST_DEBUG_OBJECT (qt_sink, "create new pool");
pool = gst_gl_buffer_pool_new (qt_sink->context);
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, 0, 0);
if (!gst_buffer_pool_set_config (pool, config))
goto config_failed;
}
/* we need at least 2 buffer because we hold on to the last one */
gst_query_add_allocation_pool (query, pool, size, 2, 0);
if (pool)
gst_object_unref (pool);
/* we also support various metadata */
gst_query_add_allocation_meta (query, GST_VIDEO_META_API_TYPE, 0);
if (qt_sink->context->gl_vtable->FenceSync)
gst_query_add_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, 0);
return TRUE;
/* ERRORS */
no_caps:
{
GST_DEBUG_OBJECT (bsink, "no caps specified");
return FALSE;
}
invalid_caps:
{
GST_DEBUG_OBJECT (bsink, "invalid caps specified");
return FALSE;
}
config_failed:
{
GST_DEBUG_OBJECT (bsink, "failed setting config");
return FALSE;
}
}

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_QT_SINK_H__
#define __GST_QT_SINK_H__
#include <gst/gst.h>
#include <gst/video/gstvideosink.h>
#include <gst/video/video.h>
#include <gst/gl/gl.h>
#include "qtitem.h"
typedef struct _GstQtSink GstQtSink;
typedef struct _GstQtSinkClass GstQtSinkClass;
typedef struct _GstQtSinkPrivate GstQtSinkPrivate;
G_BEGIN_DECLS
GType gst_qt_sink_get_type (void);
#define GST_TYPE_QT_SINK (gst_qt_sink_get_type())
#define GST_QT_SINK(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QT_SINK,GstQtSink))
#define GST_QT_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QT_SINK,GstQtSinkClass))
#define GST_IS_QT_SINK(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QT_SINK))
#define GST_IS_QT_SINK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QT_SINK))
#define GST_QT_SINK_CAST(obj) ((GstQtSink*)(obj))
/**
* GstQtSink:
*
* Opaque #GstQtSink object
*/
struct _GstQtSink
{
/* <private> */
GstVideoSink parent;
GstVideoInfo v_info;
GstBufferPool *pool;
GstGLDisplay *display;
GstGLContext *context;
GstGLContext *qt_context;
QSharedPointer<QtGLVideoItemInterface> widget;
};
/**
* GstQtSinkClass:
*
* The #GstQtSinkClass struct only contains private data
*/
struct _GstQtSinkClass
{
/* <private> */
GstVideoSinkClass object_class;
};
GstQtSink * gst_qt_sink_new (void);
G_END_DECLS
#endif /* __GST_QT_SINK_H__ */

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/*
* GStreamer
* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
/**
* SECTION:qmlglsrc
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstqtsrc.h"
#include <QtGui/QGuiApplication>
#define GST_CAT_DEFAULT gst_debug_qt_gl_src
GST_DEBUG_CATEGORY (GST_CAT_DEFAULT);
#define DEFAULT_IS_LIVE TRUE
static void gst_qt_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_qt_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void gst_qt_src_finalize (GObject * object);
static gboolean gst_qt_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
static GstCaps *gst_qt_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter);
static gboolean gst_qt_src_query (GstBaseSrc * bsrc, GstQuery * query);
static gboolean gst_qt_src_decide_allocation (GstBaseSrc * bsrc,
GstQuery * query);
static GstFlowReturn gst_qt_src_fill (GstPushSrc * psrc, GstBuffer * buffer);
static GstStateChangeReturn gst_qt_src_change_state (GstElement * element,
GstStateChange transition);
static gboolean gst_qt_src_start (GstBaseSrc * basesrc);
static gboolean gst_qt_src_stop (GstBaseSrc * basesrc);
static GstStaticPadTemplate gst_qt_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-raw(" GST_CAPS_FEATURE_MEMORY_GL_MEMORY "), "
"format = (string) RGBA, "
"width = " GST_VIDEO_SIZE_RANGE ", "
"height = " GST_VIDEO_SIZE_RANGE ", "
"framerate = " GST_VIDEO_FPS_RANGE ", "
"texture-target = (string) 2D"));
enum
{
ARG_0,
PROP_WINDOW,
PROP_DEFAULT_FBO
};
#define gst_qt_src_parent_class parent_class
G_DEFINE_TYPE_WITH_CODE (GstQtSrc, gst_qt_src,
GST_TYPE_PUSH_SRC, GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT,
"qtsrc", 0, "Qt Video Src"));
static const gfloat vertical_flip_matrix[] = {
1.0f, 0.0f, 0.0f, 0.0f,
0.0f, -1.0f, 0.0f, 1.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f,
};
static void
gst_qt_src_class_init (GstQtSrcClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
GstElementClass *gstelement_class = (GstElementClass *) klass;
GstBaseSrcClass *gstbasesrc_class = (GstBaseSrcClass *) klass;
GstPushSrcClass *gstpushsrc_class = (GstPushSrcClass *) klass;
gobject_class->set_property = gst_qt_src_set_property;
gobject_class->get_property = gst_qt_src_get_property;
gobject_class->finalize = gst_qt_src_finalize;
gst_element_class_set_metadata (gstelement_class, "Qt Video Source",
"Source/Video", "A video src that captures a window from a QML view",
"Multimedia Team <shmmmw@freescale.com>");
g_object_class_install_property (gobject_class, PROP_WINDOW,
g_param_spec_pointer ("window", "QQuickWindow",
"The QQuickWindow to place in the object hierarchy",
(GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
g_object_class_install_property (gobject_class, PROP_DEFAULT_FBO,
g_param_spec_boolean ("use-default-fbo",
"Whether to use default FBO",
"When set it will not create a new FBO for the QML render thread",
FALSE, (GParamFlags) (G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)));
gst_element_class_add_pad_template (gstelement_class,
gst_static_pad_template_get (&gst_qt_src_template));
gstelement_class->change_state = gst_qt_src_change_state;
gstbasesrc_class->set_caps = gst_qt_src_setcaps;
gstbasesrc_class->get_caps = gst_qt_src_get_caps;
gstbasesrc_class->query = gst_qt_src_query;
gstbasesrc_class->start = gst_qt_src_start;
gstbasesrc_class->stop = gst_qt_src_stop;
gstbasesrc_class->decide_allocation = gst_qt_src_decide_allocation;
gstpushsrc_class->fill = gst_qt_src_fill;
}
static void
gst_qt_src_init (GstQtSrc * src)
{
gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
gst_base_src_set_live (GST_BASE_SRC (src), DEFAULT_IS_LIVE);
src->default_fbo = FALSE;
src->pending_image_orientation = TRUE;
}
static void
gst_qt_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstQtSrc *qt_src = GST_QT_SRC (object);
switch (prop_id) {
case PROP_WINDOW:{
qt_src->qwindow =
static_cast < QQuickWindow * >(g_value_get_pointer (value));
if (qt_src->window) {
delete qt_src->window;
qt_src->window = NULL;
}
if (qt_src->qwindow)
qt_src->window = new QtGLWindow (NULL, qt_src->qwindow);
break;
}
case PROP_DEFAULT_FBO:
qt_src->default_fbo = g_value_get_boolean (value);
if (qt_src->window)
qt_window_use_default_fbo (qt_src->window, qt_src->default_fbo);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_qt_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstQtSrc *qt_src = GST_QT_SRC (object);
switch (prop_id) {
case PROP_WINDOW:
g_value_set_pointer (value, qt_src->qwindow);
break;
case PROP_DEFAULT_FBO:
g_value_set_boolean (value, qt_src->default_fbo);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_qt_src_finalize (GObject * object)
{
GstQtSrc *qt_src = GST_QT_SRC (object);
GST_DEBUG ("qmlglsrc finalize");
if (qt_src->context)
gst_object_unref (qt_src->context);
qt_src->context = NULL;
if (qt_src->qt_context)
gst_object_unref (qt_src->qt_context);
qt_src->qt_context = NULL;
if (qt_src->display)
gst_object_unref (qt_src->display);
qt_src->display = NULL;
if (qt_src->window)
delete qt_src->window;
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gboolean
gst_qt_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
{
GstQtSrc *qt_src = GST_QT_SRC (bsrc);
GST_DEBUG ("set caps with %" GST_PTR_FORMAT, caps);
if (!gst_video_info_from_caps (&qt_src->v_info, caps))
return FALSE;
if (!qt_window_set_caps (qt_src->window, caps))
return FALSE;
return TRUE;
}
static GstCaps *
gst_qt_src_get_caps (GstBaseSrc * bsrc, GstCaps * filter)
{
GstCaps *caps = NULL, *temp = NULL;
GstPadTemplate *pad_template;
GstBaseSrcClass *bclass = GST_BASE_SRC_GET_CLASS (bsrc);
GstQtSrc *qt_src = GST_QT_SRC (bsrc);
guint i;
gint width, height;
if (qt_src->window) {
qt_src->window->getGeometry (&width, &height);
}
pad_template =
gst_element_class_get_pad_template (GST_ELEMENT_CLASS (bclass), "src");
if (pad_template != NULL)
caps = gst_pad_template_get_caps (pad_template);
if (qt_src->window) {
temp = gst_caps_copy (caps);
guint n_caps = gst_caps_get_size (caps);
for (i = 0; i < n_caps; i++) {
GstStructure *s = gst_caps_get_structure (temp, i);
gst_structure_set (s, "width", G_TYPE_INT, width, NULL);
gst_structure_set (s, "height", G_TYPE_INT, height, NULL);
/* because the framerate is unknown */
gst_structure_set (s, "framerate", GST_TYPE_FRACTION, 0, 1, NULL);
gst_structure_set (s, "pixel-aspect-ratio",
GST_TYPE_FRACTION, 1, 1, NULL);
}
gst_caps_unref (caps);
caps = temp;
}
if (filter) {
GstCaps *intersection;
intersection =
gst_caps_intersect_full (filter, caps, GST_CAPS_INTERSECT_FIRST);
gst_caps_unref (caps);
caps = intersection;
}
return caps;
}
static gboolean
gst_qt_src_query (GstBaseSrc * bsrc, GstQuery * query)
{
GstQtSrc *qt_src = GST_QT_SRC (bsrc);
gboolean res = FALSE;
switch (GST_QUERY_TYPE (query)) {
case GST_QUERY_CONTEXT:
{
if (!qt_window_is_scenegraph_initialized (qt_src->window))
return FALSE;
if (!qt_src->display && !qt_src->qt_context) {
qt_src->display = qt_window_get_display (qt_src->window);
qt_src->qt_context = qt_window_get_qt_context (qt_src->window);
}
if (gst_gl_handle_context_query ((GstElement *) qt_src, query,
qt_src->display, qt_src->context, qt_src->qt_context))
return TRUE;
/* fallthrough */
}
default:
res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
break;
}
return res;
}
static gboolean
_find_local_gl_context (GstQtSrc * qt_src)
{
if (gst_gl_query_local_gl_context (GST_ELEMENT (qt_src), GST_PAD_SRC,
&qt_src->context))
return TRUE;
return FALSE;
}
static gboolean
gst_qt_src_decide_allocation (GstBaseSrc * bsrc, GstQuery * query)
{
GstBufferPool *pool = NULL;
GstStructure *config;
GstCaps *caps;
guint min, max, size, n, i;
gboolean update_pool, update_allocator;
GstAllocator *allocator;
GstAllocationParams params;
GstGLVideoAllocationParams *glparams;
GstVideoInfo vinfo;
GstQtSrc *qt_src = GST_QT_SRC (bsrc);
if (gst_query_find_allocation_meta (query,
GST_VIDEO_AFFINE_TRANSFORMATION_META_API_TYPE, NULL)) {
qt_src->downstream_supports_affine_meta = TRUE;
} else {
qt_src->downstream_supports_affine_meta = FALSE;
}
gst_query_parse_allocation (query, &caps, NULL);
if (!caps)
return FALSE;
gst_video_info_from_caps (&vinfo, caps);
n = gst_query_get_n_allocation_pools (query);
if (n > 0) {
update_pool = TRUE;
for (i = 0; i < n; i++) {
gst_query_parse_nth_allocation_pool (query, i, &pool, &size, &min, &max);
if (!pool || !GST_IS_GL_BUFFER_POOL (pool)) {
if (pool)
gst_object_unref (pool);
pool = NULL;
}
}
}
if (!pool) {
size = vinfo.size;
min = max = 0;
update_pool = FALSE;
}
if (!qt_src->context && !_find_local_gl_context (qt_src))
return FALSE;
if (!pool) {
if (!qt_src->context || !GST_IS_GL_CONTEXT (qt_src->context))
return FALSE;
pool = gst_gl_buffer_pool_new (qt_src->context);
GST_INFO_OBJECT (qt_src, "No pool, create one ourself %p", pool);
}
config = gst_buffer_pool_get_config (pool);
gst_buffer_pool_config_set_params (config, caps, size, min, max);
gst_buffer_pool_config_add_option (config, GST_BUFFER_POOL_OPTION_VIDEO_META);
if (gst_query_find_allocation_meta (query, GST_GL_SYNC_META_API_TYPE, NULL))
gst_buffer_pool_config_add_option (config,
GST_BUFFER_POOL_OPTION_GL_SYNC_META);
if (gst_query_get_n_allocation_params (query) > 0) {
gst_query_parse_nth_allocation_param (query, 0, &allocator, &params);
gst_buffer_pool_config_set_allocator (config, allocator, &params);
GST_INFO_OBJECT (qt_src, "got allocator %p", allocator);
update_allocator = TRUE;
} else {
allocator = NULL;
gst_allocation_params_init (&params);
update_allocator = FALSE;
}
glparams =
gst_gl_video_allocation_params_new (qt_src->context, &params, &vinfo, 0,
NULL, GST_GL_TEXTURE_TARGET_2D, GST_GL_RGBA);
gst_buffer_pool_config_set_gl_allocation_params (config,
(GstGLAllocationParams *) glparams);
gst_gl_allocation_params_free ((GstGLAllocationParams *) glparams);
if (!gst_buffer_pool_set_config (pool, config))
GST_WARNING_OBJECT (qt_src, "Failed to set buffer pool config");
if (update_allocator)
gst_query_set_nth_allocation_param (query, 0, allocator, &params);
else
gst_query_add_allocation_param (query, allocator, &params);
if (allocator)
gst_object_unref (allocator);
if (update_pool)
gst_query_set_nth_allocation_pool (query, 0, pool, size, min, max);
else
gst_query_add_allocation_pool (query, pool, size, min, max);
gst_object_unref (pool);
GST_INFO_OBJECT (qt_src, "successfully decide_allocation");
return TRUE;
}
static GstFlowReturn
gst_qt_src_fill (GstPushSrc * psrc, GstBuffer * buffer)
{
GstQtSrc *qt_src = GST_QT_SRC (psrc);
GST_DEBUG_OBJECT (qt_src, "setting buffer %p", buffer);
if (!qt_window_set_buffer (qt_src->window, buffer)) {
GST_ERROR_OBJECT (qt_src, "failed to fill buffer %p", buffer);
return GST_FLOW_ERROR;
}
if (!qt_src->downstream_supports_affine_meta) {
if (qt_src->pending_image_orientation) {
/* let downstream know the image orientation is vertical filp */
GstTagList *image_orientation_tag =
gst_tag_list_new (GST_TAG_IMAGE_ORIENTATION, "flip-rotate-180", NULL);
gst_pad_push_event (GST_BASE_SRC_PAD (psrc),
gst_event_new_tag (image_orientation_tag));
qt_src->pending_image_orientation = FALSE;
}
} else {
GstVideoAffineTransformationMeta *trans_meta;
trans_meta = gst_buffer_add_video_affine_transformation_meta (buffer);
gst_video_affine_transformation_meta_apply_matrix (trans_meta,
vertical_flip_matrix);
}
GST_DEBUG_OBJECT (qt_src, "buffer fill done %p", buffer);
return GST_FLOW_OK;
}
static GstStateChangeReturn
gst_qt_src_change_state (GstElement * element, GstStateChange transition)
{
GstQtSrc *qt_src = GST_QT_SRC (element);
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
QGuiApplication *app;
GST_DEBUG ("changing state: %s => %s",
gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
app = static_cast < QGuiApplication * >(QCoreApplication::instance ());
if (!app) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
("%s", "Failed to connect to Qt"),
("%s", "Could not retrieve QGuiApplication instance"));
return GST_STATE_CHANGE_FAILURE;
}
if (!qt_src->window) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
("%s", "Required property \'window\' not set"), (NULL));
return GST_STATE_CHANGE_FAILURE;
}
if (!qt_window_is_scenegraph_initialized (qt_src->window)) {
GST_ELEMENT_ERROR (element, RESOURCE, NOT_FOUND,
("%s", "Could not initialize window system"), (NULL));
return GST_STATE_CHANGE_FAILURE;
}
qt_window_use_default_fbo (qt_src->window, qt_src->default_fbo);
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
break;
default:
break;
}
return ret;
}
static gboolean
gst_qt_src_start (GstBaseSrc * basesrc)
{
GstQtSrc *qt_src = GST_QT_SRC (basesrc);
/* already has get OpenGL configuration from qt */
if (qt_src->display && qt_src->qt_context)
return TRUE;
if (!qt_window_is_scenegraph_initialized (qt_src->window))
return FALSE;
qt_src->display = qt_window_get_display (qt_src->window);
qt_src->qt_context = qt_window_get_qt_context (qt_src->window);
if (!qt_src->display || !qt_src->qt_context) {
GST_ERROR_OBJECT (qt_src,
"Could not retrieve window system OpenGL configuration");
return FALSE;
}
GST_DEBUG_OBJECT (qt_src, "Got qt display %p and qt gl context %p",
qt_src->display, qt_src->qt_context);
return TRUE;
}
static gboolean
gst_qt_src_stop (GstBaseSrc * basesrc)
{
return TRUE;
}

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/*
* GStreamer
* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_QT_SRC_H__
#define __GST_QT_SRC_H__
#include <gst/gst.h>
#include <gst/base/gstpushsrc.h>
#include <gst/video/video.h>
#include <gst/gl/gl.h>
#include "qtwindow.h"
typedef struct _GstQtSrc GstQtSrc;
typedef struct _GstQtSrcClass GstQtSrcClass;
G_BEGIN_DECLS
GType gst_qt_src_get_type (void);
#define GST_TYPE_QT_SRC (gst_qt_src_get_type())
#define GST_QT_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_QT_SRC,GstQtSrc))
#define GST_QT_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_QT_SRC,GstQtSrcClass))
#define GST_IS_QT_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_QT_SRC))
#define GST_IS_QT_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_QT_SRC))
#define GST_QT_SRC_CAST(obj) ((GstQtSrc*)(obj))
/**
* GstQtSrc:
*
* Opaque #GstQtSrc object
*/
struct _GstQtSrc
{
/* <private> */
GstPushSrc parent;
QQuickWindow *qwindow;
QtGLWindow *window;
GstVideoInfo v_info;
GstGLDisplay *display;
GstGLContext *context;
GstGLContext *qt_context;
gboolean default_fbo;
gboolean downstream_supports_affine_meta;
gboolean pending_image_orientation;
};
/**
* GstQtSrcClass:
*
* The #GstQtSrcClass struct only contains private data
*/
struct _GstQtSrcClass
{
/* <private> */
GstPushSrcClass object_class;
};
G_END_DECLS
#endif /* __GST_QT_SRC_H__ */

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <gst/video/video.h>
#include "qtitem.h"
#include "gstqsgtexture.h"
#include "gstqtglutility.h"
#include <QtCore/QRunnable>
#include <QtCore/QMutexLocker>
#include <QtGui/QGuiApplication>
#include <QtQuick/QQuickWindow>
#include <QtQuick/QSGSimpleTextureNode>
/**
* SECTION:gtkgstglwidget
* @short_description: a #GtkGLArea that renders GStreamer video #GstBuffers
* @see_also: #GtkGLArea, #GstBuffer
*
* #QtGLVideoItem is an #QQuickItem that renders GStreamer video buffers.
*/
#define GST_CAT_DEFAULT qt_item_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
#define DEFAULT_FORCE_ASPECT_RATIO TRUE
#define DEFAULT_PAR_N 0
#define DEFAULT_PAR_D 1
enum
{
PROP_0,
PROP_FORCE_ASPECT_RATIO,
PROP_PIXEL_ASPECT_RATIO,
};
struct _QtGLVideoItemPrivate
{
GMutex lock;
/* properties */
gboolean force_aspect_ratio;
gint par_n, par_d;
gint display_width;
gint display_height;
gboolean negotiated;
GstBuffer *buffer;
GstCaps *caps;
GstVideoInfo v_info;
gboolean initted;
GstGLDisplay *display;
QOpenGLContext *qt_context;
GstGLContext *other_context;
GstGLContext *context;
};
class InitializeSceneGraph : public QRunnable
{
public:
InitializeSceneGraph(QtGLVideoItem *item);
void run();
private:
QtGLVideoItem *item_;
};
InitializeSceneGraph::InitializeSceneGraph(QtGLVideoItem *item) :
item_(item)
{
}
void InitializeSceneGraph::run()
{
item_->onSceneGraphInitialized();
}
QtGLVideoItem::QtGLVideoItem()
{
static volatile gsize _debug;
if (g_once_init_enter (&_debug)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "qtglwidget", 0, "Qt GL Widget");
g_once_init_leave (&_debug, 1);
}
this->m_openGlContextInitialized = false;
this->setFlag (QQuickItem::ItemHasContents, true);
this->priv = g_new0 (QtGLVideoItemPrivate, 1);
this->priv->force_aspect_ratio = DEFAULT_FORCE_ASPECT_RATIO;
this->priv->par_n = DEFAULT_PAR_N;
this->priv->par_d = DEFAULT_PAR_D;
g_mutex_init (&this->priv->lock);
this->priv->display = gst_qt_get_gl_display();
connect(this, SIGNAL(windowChanged(QQuickWindow*)), this,
SLOT(handleWindowChanged(QQuickWindow*)));
this->proxy = QSharedPointer<QtGLVideoItemInterface>(new QtGLVideoItemInterface(this));
GST_DEBUG ("%p init Qt Video Item", this);
}
QtGLVideoItem::~QtGLVideoItem()
{
/* Before destroying the priv info, make sure
* no qmlglsink's will call in again, and that
* any ongoing calls are done by invalidating the proxy
* pointer */
GST_INFO ("Destroying QtGLVideoItem and invalidating the proxy");
proxy->invalidateRef();
proxy.clear();
g_mutex_clear (&this->priv->lock);
if (this->priv->context)
gst_object_unref(this->priv->context);
if (this->priv->other_context)
gst_object_unref(this->priv->other_context);
if (this->priv->display)
gst_object_unref(this->priv->display);
g_free (this->priv);
this->priv = NULL;
}
void
QtGLVideoItem::setDAR(gint num, gint den)
{
this->priv->par_n = num;
this->priv->par_d = den;
}
void
QtGLVideoItem::getDAR(gint * num, gint * den)
{
if (num)
*num = this->priv->par_n;
if (den)
*den = this->priv->par_d;
}
void
QtGLVideoItem::setForceAspectRatio(bool force_aspect_ratio)
{
this->priv->force_aspect_ratio = !!force_aspect_ratio;
}
bool
QtGLVideoItem::getForceAspectRatio()
{
return this->priv->force_aspect_ratio;
}
bool
QtGLVideoItem::itemInitialized()
{
return m_openGlContextInitialized;
}
QSGNode *
QtGLVideoItem::updatePaintNode(QSGNode * oldNode,
UpdatePaintNodeData * updatePaintNodeData)
{
if (!m_openGlContextInitialized) {
return oldNode;
}
QSGSimpleTextureNode *texNode = static_cast<QSGSimpleTextureNode *> (oldNode);
GstVideoRectangle src, dst, result;
GstQSGTexture *tex;
g_mutex_lock (&this->priv->lock);
gst_gl_context_activate (this->priv->other_context, TRUE);
GST_TRACE ("%p updatePaintNode", this);
if (!this->priv->caps) {
g_mutex_unlock (&this->priv->lock);
return NULL;
}
if (!texNode) {
texNode = new QSGSimpleTextureNode ();
texNode->setOwnsTexture (true);
texNode->setTexture (new GstQSGTexture ());
}
tex = static_cast<GstQSGTexture *> (texNode->texture());
tex->setCaps (this->priv->caps);
tex->setBuffer (this->priv->buffer);
texNode->markDirty(QSGNode::DirtyMaterial);
if (this->priv->force_aspect_ratio) {
src.w = this->priv->display_width;
src.h = this->priv->display_height;
dst.x = boundingRect().x();
dst.y = boundingRect().y();
dst.w = boundingRect().width();
dst.h = boundingRect().height();
gst_video_sink_center_rect (src, dst, &result, TRUE);
} else {
result.x = boundingRect().x();
result.y = boundingRect().y();
result.w = boundingRect().width();
result.h = boundingRect().height();
}
texNode->setRect (QRectF (result.x, result.y, result.w, result.h));
gst_gl_context_activate (this->priv->other_context, FALSE);
g_mutex_unlock (&this->priv->lock);
return texNode;
}
static void
_reset (QtGLVideoItem * qt_item)
{
gst_buffer_replace (&qt_item->priv->buffer, NULL);
gst_caps_replace (&qt_item->priv->caps, NULL);
qt_item->priv->negotiated = FALSE;
qt_item->priv->initted = FALSE;
}
void
QtGLVideoItemInterface::setBuffer (GstBuffer * buffer)
{
QMutexLocker locker(&lock);
if (qt_item == NULL)
return;
if (!qt_item->priv->negotiated) {
GST_WARNING ("Got buffer on unnegotiated QtGLVideoItem. Dropping");
return;
}
g_mutex_lock (&qt_item->priv->lock);
gst_buffer_replace (&qt_item->priv->buffer, buffer);
QMetaObject::invokeMethod(qt_item, "update", Qt::QueuedConnection);
g_mutex_unlock (&qt_item->priv->lock);
}
void
QtGLVideoItem::onSceneGraphInitialized ()
{
GST_DEBUG ("scene graph initialization with Qt GL context %p",
this->window()->openglContext ());
if (this->priv->qt_context == this->window()->openglContext ())
return;
this->priv->qt_context = this->window()->openglContext ();
if (this->priv->qt_context == NULL) {
g_assert_not_reached ();
return;
}
m_openGlContextInitialized = gst_qt_get_gl_wrapcontext (this->priv->display,
&this->priv->other_context, &this->priv->context);
GST_DEBUG ("%p created wrapped GL context %" GST_PTR_FORMAT, this,
this->priv->other_context);
emit itemInitializedChanged();
}
void
QtGLVideoItem::onSceneGraphInvalidated ()
{
GST_FIXME ("%p scene graph invalidated", this);
}
gboolean
QtGLVideoItemInterface::initWinSys ()
{
QMutexLocker locker(&lock);
GError *error = NULL;
if (qt_item == NULL)
return FALSE;
g_mutex_lock (&qt_item->priv->lock);
if (qt_item->priv->display && qt_item->priv->qt_context
&& qt_item->priv->other_context && qt_item->priv->context) {
/* already have the necessary state */
g_mutex_unlock (&qt_item->priv->lock);
return TRUE;
}
if (!GST_IS_GL_DISPLAY (qt_item->priv->display)) {
GST_ERROR ("%p failed to retrieve display connection %" GST_PTR_FORMAT,
qt_item, qt_item->priv->display);
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
if (!GST_IS_GL_CONTEXT (qt_item->priv->other_context)) {
GST_ERROR ("%p failed to retrieve wrapped context %" GST_PTR_FORMAT, qt_item,
qt_item->priv->other_context);
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
qt_item->priv->context = gst_gl_context_new (qt_item->priv->display);
if (!qt_item->priv->context) {
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
if (!gst_gl_context_create (qt_item->priv->context, qt_item->priv->other_context,
&error)) {
GST_ERROR ("%s", error->message);
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
g_mutex_unlock (&qt_item->priv->lock);
return TRUE;
}
void
QtGLVideoItem::handleWindowChanged(QQuickWindow *win)
{
if (win) {
if (win->isSceneGraphInitialized())
win->scheduleRenderJob(new InitializeSceneGraph(this), QQuickWindow::BeforeSynchronizingStage);
else
connect(win, SIGNAL(sceneGraphInitialized()), this, SLOT(onSceneGraphInitialized()), Qt::DirectConnection);
connect(win, SIGNAL(sceneGraphInvalidated()), this, SLOT(onSceneGraphInvalidated()), Qt::DirectConnection);
} else {
this->priv->qt_context = NULL;
}
}
static gboolean
_calculate_par (QtGLVideoItem * widget, GstVideoInfo * info)
{
gboolean ok;
gint width, height;
gint par_n, par_d;
gint display_par_n, display_par_d;
guint display_ratio_num, display_ratio_den;
width = GST_VIDEO_INFO_WIDTH (info);
height = GST_VIDEO_INFO_HEIGHT (info);
par_n = GST_VIDEO_INFO_PAR_N (info);
par_d = GST_VIDEO_INFO_PAR_D (info);
if (!par_n)
par_n = 1;
/* get display's PAR */
if (widget->priv->par_n != 0 && widget->priv->par_d != 0) {
display_par_n = widget->priv->par_n;
display_par_d = widget->priv->par_d;
} else {
display_par_n = 1;
display_par_d = 1;
}
ok = gst_video_calculate_display_ratio (&display_ratio_num,
&display_ratio_den, width, height, par_n, par_d, display_par_n,
display_par_d);
if (!ok)
return FALSE;
GST_LOG ("PAR: %u/%u DAR:%u/%u", par_n, par_d, display_par_n, display_par_d);
if (height % display_ratio_den == 0) {
GST_DEBUG ("keeping video height");
widget->priv->display_width = (guint)
gst_util_uint64_scale_int (height, display_ratio_num,
display_ratio_den);
widget->priv->display_height = height;
} else if (width % display_ratio_num == 0) {
GST_DEBUG ("keeping video width");
widget->priv->display_width = width;
widget->priv->display_height = (guint)
gst_util_uint64_scale_int (width, display_ratio_den, display_ratio_num);
} else {
GST_DEBUG ("approximating while keeping video height");
widget->priv->display_width = (guint)
gst_util_uint64_scale_int (height, display_ratio_num,
display_ratio_den);
widget->priv->display_height = height;
}
GST_DEBUG ("scaling to %dx%d", widget->priv->display_width,
widget->priv->display_height);
return TRUE;
}
gboolean
QtGLVideoItemInterface::setCaps (GstCaps * caps)
{
QMutexLocker locker(&lock);
GstVideoInfo v_info;
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
if (qt_item == NULL)
return FALSE;
if (qt_item->priv->caps && gst_caps_is_equal_fixed (qt_item->priv->caps, caps))
return TRUE;
if (!gst_video_info_from_caps (&v_info, caps))
return FALSE;
g_mutex_lock (&qt_item->priv->lock);
_reset (qt_item);
gst_caps_replace (&qt_item->priv->caps, caps);
if (!_calculate_par (qt_item, &v_info)) {
g_mutex_unlock (&qt_item->priv->lock);
return FALSE;
}
qt_item->priv->v_info = v_info;
qt_item->priv->negotiated = TRUE;
g_mutex_unlock (&qt_item->priv->lock);
return TRUE;
}
GstGLContext *
QtGLVideoItemInterface::getQtContext ()
{
QMutexLocker locker(&lock);
if (!qt_item || !qt_item->priv->other_context)
return NULL;
return (GstGLContext *) gst_object_ref (qt_item->priv->other_context);
}
GstGLContext *
QtGLVideoItemInterface::getContext ()
{
QMutexLocker locker(&lock);
if (!qt_item || !qt_item->priv->context)
return NULL;
return (GstGLContext *) gst_object_ref (qt_item->priv->context);
}
GstGLDisplay *
QtGLVideoItemInterface::getDisplay()
{
QMutexLocker locker(&lock);
if (!qt_item || !qt_item->priv->display)
return NULL;
return (GstGLDisplay *) gst_object_ref (qt_item->priv->display);
}
void
QtGLVideoItemInterface::setDAR(gint num, gint den)
{
QMutexLocker locker(&lock);
if (!qt_item)
return;
qt_item->setDAR(num, den);
}
void
QtGLVideoItemInterface::getDAR(gint * num, gint * den)
{
QMutexLocker locker(&lock);
if (!qt_item)
return;
qt_item->getDAR (num, den);
}
void
QtGLVideoItemInterface::setForceAspectRatio(bool force_aspect_ratio)
{
QMutexLocker locker(&lock);
if (!qt_item)
return;
qt_item->setForceAspectRatio(force_aspect_ratio);
}
bool
QtGLVideoItemInterface::getForceAspectRatio()
{
QMutexLocker locker(&lock);
if (!qt_item)
return FALSE;
return qt_item->getForceAspectRatio();
}
void
QtGLVideoItemInterface::invalidateRef()
{
QMutexLocker locker(&lock);
qt_item = NULL;
}

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/*
* GStreamer
* Copyright (C) 2015 Matthew Waters <matthew@centricular.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __QT_ITEM_H__
#define __QT_ITEM_H__
#include <gst/gst.h>
#include <gst/gl/gl.h>
#include "gstqtgl.h"
#include <QtCore/QMutex>
#include <QtQuick/QQuickItem>
#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLFunctions>
typedef struct _QtGLVideoItemPrivate QtGLVideoItemPrivate;
class QtGLVideoItem;
class QtGLVideoItemInterface : public QObject
{
Q_OBJECT
public:
QtGLVideoItemInterface (QtGLVideoItem *w) : qt_item (w), lock() {};
void invalidateRef();
void setBuffer (GstBuffer * buffer);
gboolean setCaps (GstCaps *caps);
gboolean initWinSys ();
GstGLContext *getQtContext();
GstGLContext *getContext();
GstGLDisplay *getDisplay();
QtGLVideoItem *videoItem () { return qt_item; };
void setDAR(gint, gint);
void getDAR(gint *, gint *);
void setForceAspectRatio(bool);
bool getForceAspectRatio();
private:
QtGLVideoItem *qt_item;
QMutex lock;
};
class InitializeSceneGraph;
class QtGLVideoItem : public QQuickItem, protected QOpenGLFunctions
{
Q_OBJECT
Q_PROPERTY(bool itemInitialized
READ itemInitialized
NOTIFY itemInitializedChanged)
public:
QtGLVideoItem();
~QtGLVideoItem();
void setDAR(gint, gint);
void getDAR(gint *, gint *);
void setForceAspectRatio(bool);
bool getForceAspectRatio();
bool itemInitialized();
QSharedPointer<QtGLVideoItemInterface> getInterface() { return proxy; };
/* private for C interface ... */
QtGLVideoItemPrivate *priv;
Q_SIGNALS:
void itemInitializedChanged();
private Q_SLOTS:
void handleWindowChanged(QQuickWindow * win);
void onSceneGraphInitialized();
void onSceneGraphInvalidated();
protected:
QSGNode * updatePaintNode (QSGNode * oldNode, UpdatePaintNodeData * updatePaintNodeData);
private:
friend class InitializeSceneGraph;
void setViewportSize(const QSize &size);
void shareContext();
QSize m_viewportSize;
bool m_openGlContextInitialized;
QSharedPointer<QtGLVideoItemInterface> proxy;
};
#endif /* __QT_ITEM_H__ */

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TEMPLATE = lib
TARGET = gstqmlgl
QT += qml quick widgets gui
QT_CONFIG -= no-pkg-config
CONFIG += link_pkgconfig debug plugin
PKGCONFIG = \
gstreamer-1.0 \
gstreamer-video-1.0 \
gstreamer-gl-1.0
DEFINES += \
GST_USE_UNSTABLE_API \
HAVE_QT_WIN32
SOURCES += \
gstplugin.cc \
gstqtglutility.cc \
gstqsgtexture.cc \
gstqtsink.cc \
gstqtsrc.cc \
qtwindow.cc \
qtitem.cc
HEADERS += \
gstqsgtexture.h \
gstqtgl.h \
gstqtglutility.h \
gstqtsink.h \
gstqtsrc.h \
qtwindow.h \
qtitem.h
INCLUDEPATH += \
$$(GSTREAMER_ROOT)/include \
$$[QT_INSTALL_PREFIX]/include/QtGui/$$[QT_VERSION]/QtGui/

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/*
* GStreamer
* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <gst/video/video.h>
#include <gst/gl/gstglfuncs.h>
#include "qtwindow.h"
#include "gstqsgtexture.h"
#include "gstqtglutility.h"
#include <QtCore/QDateTime>
#include <QtCore/QRunnable>
#include <QtGui/QGuiApplication>
#include <QtQuick/QQuickWindow>
#include <QOpenGLFramebufferObject>
/* compatability definitions... */
#ifndef GL_READ_FRAMEBUFFER
#define GL_READ_FRAMEBUFFER 0x8CA8
#endif
#ifndef GL_DRAW_FRAMEBUFFER
#define GL_DRAW_FRAMEBUFFER 0x8CA9
#endif
/**
* SECTION:
*
* #QtGLWindow is an #QQuickWindow that grab QtQuick view to GStreamer OpenGL video buffers.
*/
GST_DEBUG_CATEGORY_STATIC (qt_window_debug);
#define GST_CAT_DEFAULT qt_window_debug
struct _QtGLWindowPrivate
{
GMutex lock;
GCond update_cond;
GstBuffer *buffer;
GstCaps *caps;
GstVideoInfo v_info;
gboolean initted;
gboolean updated;
gboolean quit;
gboolean result;
gboolean useDefaultFbo;
GstGLDisplay *display;
GstGLContext *other_context;
GLuint fbo;
/* frames that qmlview rendered in its gl thread */
quint64 frames_rendered;
quint64 start;
quint64 stop;
};
class InitQtGLContext : public QRunnable
{
public:
InitQtGLContext(QtGLWindow *window);
void run();
private:
QtGLWindow *window_;
};
InitQtGLContext::InitQtGLContext(QtGLWindow *window) :
window_(window)
{
}
void InitQtGLContext::run()
{
window_->onSceneGraphInitialized();
}
QtGLWindow::QtGLWindow ( QWindow * parent, QQuickWindow *src ) :
QQuickWindow( parent ), source (src)
{
QGuiApplication *app = static_cast<QGuiApplication *> (QCoreApplication::instance ());
static volatile gsize _debug;
g_assert (app != NULL);
if (g_once_init_enter (&_debug)) {
GST_DEBUG_CATEGORY_INIT (GST_CAT_DEFAULT, "qtglwindow", 0, "Qt GL QuickWindow");
g_once_init_leave (&_debug, 1);
}
this->priv = g_new0 (QtGLWindowPrivate, 1);
g_mutex_init (&this->priv->lock);
g_cond_init (&this->priv->update_cond);
this->priv->display = gst_qt_get_gl_display();
connect (source, SIGNAL(beforeRendering()), this, SLOT(beforeRendering()), Qt::DirectConnection);
connect (source, SIGNAL(afterRendering()), this, SLOT(afterRendering()), Qt::DirectConnection);
connect (app, SIGNAL(aboutToQuit()), this, SLOT(aboutToQuit()), Qt::DirectConnection);
if (source->isSceneGraphInitialized())
source->scheduleRenderJob(new InitQtGLContext(this), QQuickWindow::BeforeSynchronizingStage);
else
connect (source, SIGNAL(sceneGraphInitialized()), this, SLOT(onSceneGraphInitialized()), Qt::DirectConnection);
connect (source, SIGNAL(sceneGraphInvalidated()), this, SLOT(onSceneGraphInvalidated()), Qt::DirectConnection);
GST_DEBUG ("%p init Qt Window", this->priv->display);
}
QtGLWindow::~QtGLWindow()
{
GST_DEBUG ("deinit Qt Window");
g_mutex_clear (&this->priv->lock);
g_cond_clear (&this->priv->update_cond);
if (this->priv->other_context)
gst_object_unref(this->priv->other_context);
if (this->priv->display)
gst_object_unref(this->priv->display);
g_free (this->priv);
this->priv = NULL;
}
void
QtGLWindow::beforeRendering()
{
unsigned int width, height;
g_mutex_lock (&this->priv->lock);
static volatile gsize once = 0;
if (g_once_init_enter(&once)) {
this->priv->start = QDateTime::currentDateTime().toMSecsSinceEpoch();
g_once_init_leave(&once,1);
}
if (!fbo && !this->priv->useDefaultFbo) {
width = source->width();
height = source->height();
GST_DEBUG ("create new framebuffer object %dX%d", width, height);
fbo.reset(new QOpenGLFramebufferObject (width, height,
QOpenGLFramebufferObject::NoAttachment, GL_TEXTURE_2D, GL_RGBA));
source->setRenderTarget(fbo.data());
} else if (this->priv->useDefaultFbo) {
GST_DEBUG ("use default fbo for render target");
fbo.reset(NULL);
source->setRenderTarget(NULL);
}
g_mutex_unlock (&this->priv->lock);
}
void
QtGLWindow::afterRendering()
{
GstVideoFrame gl_frame;
GstVideoInfo *info;
GstGLContext *context;
gboolean ret;
guint width, height;
const GstGLFuncs *gl;
GLuint dst_tex;
g_mutex_lock (&this->priv->lock);
this->priv->frames_rendered++;
if(!this->priv->buffer || this->priv->updated == TRUE) {
GST_DEBUG ("skip this frame");
g_mutex_unlock (&this->priv->lock);
return;
}
GST_DEBUG ("copy buffer %p",this->priv->buffer);
width = GST_VIDEO_INFO_WIDTH (&this->priv->v_info);
height = GST_VIDEO_INFO_HEIGHT (&this->priv->v_info);
info = &this->priv->v_info;
context = this->priv->other_context;
gst_gl_context_activate (context, TRUE);
gl = context->gl_vtable;
ret = gst_video_frame_map (&gl_frame, info, this->priv->buffer,
(GstMapFlags) (GST_MAP_WRITE | GST_MAP_GL));
if (!ret) {
this->priv->buffer = NULL;
GST_ERROR ("Failed to map video frame");
goto errors;
}
gl->BindFramebuffer (GL_READ_FRAMEBUFFER, this->source->renderTargetId());
ret = gst_gl_context_check_framebuffer_status (context, GL_READ_FRAMEBUFFER);
if (!ret) {
GST_ERROR ("FBO errors");
goto errors;
}
dst_tex = *(guint *) gl_frame.data[0];
GST_DEBUG ("qml render target id %d, render to tex %d %dX%d",
this->source->renderTargetId(), dst_tex, width,height);
gl->BindTexture (GL_TEXTURE_2D, dst_tex);
if (gl->BlitFramebuffer) {
gl->BindFramebuffer (GL_DRAW_FRAMEBUFFER, this->priv->fbo);
gl->FramebufferTexture2D (GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
GL_TEXTURE_2D, dst_tex, 0);
ret = gst_gl_context_check_framebuffer_status (context, GL_DRAW_FRAMEBUFFER);
if (!ret) {
GST_ERROR ("FBO errors");
goto errors;
}
gl->ReadBuffer (GL_COLOR_ATTACHMENT0);
gl->BlitFramebuffer (0, 0, width, height,
0, 0, width, height,
GL_COLOR_BUFFER_BIT, GL_LINEAR);
} else {
gl->CopyTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA, 0, 0, width, height, 0);
}
GST_DEBUG ("rendering finished");
errors:
gl->BindFramebuffer (GL_FRAMEBUFFER, 0);
gst_video_frame_unmap (&gl_frame);
gst_gl_context_activate (context, FALSE);
this->priv->result = ret;
this->priv->updated = TRUE;
g_cond_signal (&this->priv->update_cond);
g_mutex_unlock (&this->priv->lock);
}
void
QtGLWindow::aboutToQuit()
{
g_mutex_lock (&this->priv->lock);
this->priv->updated = TRUE;
this->priv->quit = TRUE;
g_cond_signal (&this->priv->update_cond);
this->priv->stop = QDateTime::currentDateTime().toMSecsSinceEpoch();
qint64 duration = this->priv->stop - this->priv->start;
float fps = ((float)this->priv->frames_rendered / duration * 1000);
GST_DEBUG("about to quit, total refresh frames (%lld) in (%0.3f) seconds, fps: %0.3f",
this->priv->frames_rendered, (float)duration / 1000, fps);
g_mutex_unlock (&this->priv->lock);
}
void
QtGLWindow::onSceneGraphInitialized()
{
GST_DEBUG ("scene graph initialization with Qt GL context %p",
this->source->openglContext ());
this->priv->initted = gst_qt_get_gl_wrapcontext (this->priv->display,
&this->priv->other_context, NULL);
if (this->priv->initted && this->priv->other_context) {
const GstGLFuncs *gl;
gst_gl_context_activate (this->priv->other_context, TRUE);
gl = this->priv->other_context->gl_vtable;
gl->GenFramebuffers (1, &this->priv->fbo);
gst_gl_context_activate (this->priv->other_context, FALSE);
}
GST_DEBUG ("%p created wrapped GL context %" GST_PTR_FORMAT, this,
this->priv->other_context);
}
void
QtGLWindow::onSceneGraphInvalidated()
{
GST_DEBUG ("scene graph invalidated");
if (this->priv->fbo && this->priv->other_context) {
const GstGLFuncs *gl;
gst_gl_context_activate (this->priv->other_context, TRUE);
gl = this->priv->other_context->gl_vtable;
gl->DeleteFramebuffers (1, &this->priv->fbo);
gst_gl_context_activate (this->priv->other_context, FALSE);
}
}
bool
QtGLWindow::getGeometry(int * width, int * height)
{
if (width == NULL || height == NULL)
return FALSE;
*width = this->source->width();
*height = this->source->height();
return TRUE;
}
GstGLContext *
qt_window_get_qt_context (QtGLWindow * qt_window)
{
g_return_val_if_fail (qt_window != NULL, NULL);
if (!qt_window->priv->other_context)
return NULL;
return (GstGLContext *) gst_object_ref (qt_window->priv->other_context);
}
GstGLDisplay *
qt_window_get_display (QtGLWindow * qt_window)
{
g_return_val_if_fail (qt_window != NULL, NULL);
if (!qt_window->priv->display)
return NULL;
return (GstGLDisplay *) gst_object_ref (qt_window->priv->display);
}
gboolean
qt_window_is_scenegraph_initialized (QtGLWindow * qt_window)
{
g_return_val_if_fail (qt_window != NULL, FALSE);
return qt_window->priv->initted;
}
gboolean
qt_window_set_caps (QtGLWindow * qt_window, GstCaps * caps)
{
GstVideoInfo v_info;
g_return_val_if_fail (qt_window != NULL, FALSE);
g_return_val_if_fail (GST_IS_CAPS (caps), FALSE);
g_return_val_if_fail (gst_caps_is_fixed (caps), FALSE);
if (qt_window->priv->caps && gst_caps_is_equal_fixed (qt_window->priv->caps, caps))
return TRUE;
if (!gst_video_info_from_caps (&v_info, caps))
return FALSE;
g_mutex_lock (&qt_window->priv->lock);
gst_caps_replace (&qt_window->priv->caps, caps);
qt_window->priv->v_info = v_info;
g_mutex_unlock (&qt_window->priv->lock);
return TRUE;
}
gboolean
qt_window_set_buffer (QtGLWindow * qt_window, GstBuffer * buffer)
{
g_return_val_if_fail (qt_window != NULL, FALSE);
g_return_val_if_fail (qt_window->priv->initted, FALSE);
gboolean ret;
g_mutex_lock (&qt_window->priv->lock);
if (qt_window->priv->quit){
GST_DEBUG("about to quit, drop this buffer");
g_mutex_unlock (&qt_window->priv->lock);
return TRUE;
}
qt_window->priv->updated = FALSE;
qt_window->priv->buffer = buffer;
while (!qt_window->priv->updated)
g_cond_wait (&qt_window->priv->update_cond, &qt_window->priv->lock);
ret = qt_window->priv->result;
g_mutex_unlock (&qt_window->priv->lock);
return ret;
}
void
qt_window_use_default_fbo (QtGLWindow * qt_window, gboolean useDefaultFbo)
{
g_return_if_fail (qt_window != NULL);
g_mutex_lock (&qt_window->priv->lock);
GST_DEBUG ("set to use default fbo %d", useDefaultFbo);
qt_window->priv->useDefaultFbo = useDefaultFbo;
g_mutex_unlock (&qt_window->priv->lock);
}

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/*
* GStreamer
* Copyright (C) 2016 Freescale Semiconductor, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __QT_WINDOW_H__
#define __QT_WINDOW_H__
#include <gst/gst.h>
#include <gst/gl/gl.h>
#include "gstqtgl.h"
#include <QtQuick/QQuickWindow>
#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLFunctions>
typedef struct _QtGLWindowPrivate QtGLWindowPrivate;
class InitQtGLContext;
class QtGLWindow : public QQuickWindow, protected QOpenGLFunctions
{
Q_OBJECT
public:
QtGLWindow (QWindow * parent = NULL, QQuickWindow *source = NULL);
~QtGLWindow ();
bool getGeometry (int * width, int * height);
/* private for C interface ... */
QtGLWindowPrivate *priv;
private Q_SLOTS:
void beforeRendering ();
void afterRendering ();
void onSceneGraphInitialized ();
void onSceneGraphInvalidated ();
void aboutToQuit();
private:
friend class InitQtGLContext;
QQuickWindow * source;
QScopedPointer<QOpenGLFramebufferObject> fbo;
};
extern "C"
{
gboolean qt_window_set_buffer (QtGLWindow * qt_window, GstBuffer * buffer);
gboolean qt_window_set_caps (QtGLWindow * qt_window, GstCaps * caps);
GstGLContext * qt_window_get_qt_context (QtGLWindow * qt_window);
GstGLDisplay * qt_window_get_display (QtGLWindow * qt_window);
gboolean qt_window_is_scenegraph_initialized (QtGLWindow * qt_window);
void qt_window_use_default_fbo (QtGLWindow * qt_window, gboolean useDefaultFbo);
}
#endif /* __QT_WINDOW_H__ */

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tests/examples/qt/qmlsink/.gitignore vendored Normal file
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deployment.pri
play
qrc_qml.cpp

23
tests/examples/qt/qmlsink/CMakeLists.txt Normal file
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cmake_minimum_required(VERSION 3.3)
include(FindPkgConfig)
if(!${PKG_CONFIG_FOUND})
MESSAGE(FATAL_ERROR "pkg-config required. Please install it")
return ("Error - pkg-config not found")
endif()
pkg_check_modules(GSTREAMER gstreamer-1.0>=1.6 gstreamer-video-1.0>=1.6 REQUIRED)
find_package(Qt5Core REQUIRED)
find_package(Qt5Widgets REQUIRED)
find_package(Qt5Qml REQUIRED)
find_package(Qt5Quick REQUIRED)
set (SRC_LIST main.cpp)
qt5_add_resources(RESOURCES qml.qrc)
link_directories(${GSTREAMER_LIBRARY_DIRS})
include_directories (${GSTREAMER_INCLUDE_DIRS})
add_executable(qml-example ${SRC_LIST} ${RESOURCES})
target_link_libraries (qml-example ${GSTREAMER_LIBRARIES})
qt5_use_modules(qml-example Core Widgets Qml Quick)

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#include <QApplication>
#include <QQmlApplicationEngine>
#include <QQuickWindow>
#include <QQuickItem>
#include <QRunnable>
#include <gst/gst.h>
class SetPlaying : public QRunnable
{
public:
SetPlaying(GstElement *);
~SetPlaying();
void run ();
private:
GstElement * pipeline_;
};
SetPlaying::SetPlaying (GstElement * pipeline)
{
this->pipeline_ = pipeline ? static_cast<GstElement *> (gst_object_ref (pipeline)) : NULL;
}
SetPlaying::~SetPlaying ()
{
if (this->pipeline_)
gst_object_unref (this->pipeline_);
}
void
SetPlaying::run ()
{
if (this->pipeline_)
gst_element_set_state (this->pipeline_, GST_STATE_PLAYING);
}
int main(int argc, char *argv[])
{
int ret;
gst_init (&argc, &argv);
{
QGuiApplication app(argc, argv);
GstElement *pipeline = gst_pipeline_new (NULL);
GstElement *src = gst_element_factory_make ("videotestsrc", NULL);
GstElement *glupload = gst_element_factory_make ("glupload", NULL);
/* the plugin must be loaded before loading the qml file to register the
* GstGLVideoItem qml item */
GstElement *sink = gst_element_factory_make ("qmlglsink", NULL);
g_assert (src && glupload && sink);
gst_bin_add_many (GST_BIN (pipeline), src, glupload, sink, NULL);
gst_element_link_many (src, glupload, sink, NULL);
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
QQuickItem *videoItem;
QQuickWindow *rootObject;
/* find and set the videoItem on the sink */
rootObject = static_cast<QQuickWindow *> (engine.rootObjects().first());
videoItem = rootObject->findChild<QQuickItem *> ("videoItem");
g_assert (videoItem);
g_object_set(sink, "widget", videoItem, NULL);
rootObject->scheduleRenderJob (new SetPlaying (pipeline),
QQuickWindow::BeforeSynchronizingStage);
ret = app.exec();
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
}
gst_deinit ();
return ret;
}

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import QtQuick 2.4
import QtQuick.Controls 1.1
import QtQuick.Controls.Styles 1.3
import QtQuick.Dialogs 1.2
import QtQuick.Window 2.1
import org.freedesktop.gstreamer.GLVideoItem 1.0
ApplicationWindow {
id: window
visible: true
width: 640
height: 480
x: 30
y: 30
color: "black"
Item {
anchors.fill: parent
GstGLVideoItem {
id: video
objectName: "videoItem"
anchors.centerIn: parent
width: parent.width
height: parent.height
}
Rectangle {
color: Qt.rgba(1, 1, 1, 0.7)
border.width: 1
border.color: "white"
anchors.bottom: video.bottom
anchors.bottomMargin: 15
anchors.horizontalCenter: parent.horizontalCenter
width : parent.width - 30
height: parent.height - 30
radius: 8
MouseArea {
id: mousearea
anchors.fill: parent
hoverEnabled: true
onEntered: {
parent.opacity = 1.0
hidetimer.start()
}
}
Timer {
id: hidetimer
interval: 5000
onTriggered: {
parent.opacity = 0.0
stop()
}
}
}
}
}

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TEMPLATE = app
QT += qml quick widgets
QT_CONFIG -= no-pkg-config
CONFIG += link_pkgconfig debug
PKGCONFIG = \
gstreamer-1.0 \
gstreamer-video-1.0
DEFINES += GST_USE_UNSTABLE_API
INCLUDEPATH += ../lib
SOURCES += main.cpp
RESOURCES += qml.qrc
# Additional import path used to resolve QML modules in Qt Creator's code model
QML_IMPORT_PATH =

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tests/examples/qt/qmlsink/qml.qrc Normal file
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<RCC>
<qresource prefix="/">
<file>main.qml</file>
</qresource>
</RCC>

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grabqml
qrc_qml.cpp

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tests/examples/qt/qmlsrc/grabqml.pro Normal file
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TEMPLATE = app
QT += qml quick widgets
QT_CONFIG -= no-pkg-config
CONFIG += link_pkgconfig debug
PKGCONFIG = \
gstreamer-1.0 \
gstreamer-video-1.0
DEFINES += GST_USE_UNSTABLE_API
INCLUDEPATH += ../lib
SOURCES += main.cpp
RESOURCES += qml.qrc
# Additional import path used to resolve QML modules in Qt Creator's code model
QML_IMPORT_PATH =

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#include <QApplication>
#include <QQmlApplicationEngine>
#include <QQuickWindow>
#include <QQuickItem>
#include <QQuickView>
#include <QRunnable>
#include <QDebug>
#include <gst/gst.h>
class SetPlaying : public QRunnable
{
public:
SetPlaying(GstElement *);
~SetPlaying();
void run ();
private:
GstElement * pipeline_;
};
SetPlaying::SetPlaying (GstElement * pipeline)
{
this->pipeline_ = pipeline ? static_cast<GstElement *> (gst_object_ref (pipeline)) : NULL;
}
SetPlaying::~SetPlaying ()
{
if (this->pipeline_)
gst_object_unref (this->pipeline_);
}
void
SetPlaying::run ()
{
if (this->pipeline_)
gst_element_set_state (this->pipeline_, GST_STATE_PLAYING);
}
int main(int argc, char *argv[])
{
int ret;
QGuiApplication app(argc, argv);
gst_init (&argc, &argv);
GstElement *pipeline = gst_pipeline_new (NULL);
GstElement *src = gst_element_factory_make ("qmlglsrc", NULL);
GstElement *sink = gst_element_factory_make ("glimagesink", NULL);
g_assert (src && sink);
gst_bin_add_many (GST_BIN (pipeline), src, sink, NULL);
gst_element_link_many (src, sink, NULL);
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
QQuickWindow *rootObject;
/* find and set the QQuickWindow on the src */
rootObject = static_cast<QQuickWindow *> (engine.rootObjects().first());
g_object_set(src, "window", rootObject, NULL);
g_object_set(src, "use-default-fbo", TRUE, NULL);
/* output buffer of qmlglsrc is vertical flip, get the image orientation tag */
g_object_set(sink, "rotate-method", 8, NULL);
rootObject->scheduleRenderJob (new SetPlaying (pipeline),
QQuickWindow::BeforeSynchronizingStage);
ret = app.exec();
gst_element_set_state (pipeline, GST_STATE_NULL);
gst_object_unref (pipeline);
gst_deinit ();
return ret;
}

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import QtQuick 2.4
import QtQuick.Controls 1.1
import QtQuick.Controls.Styles 1.1
import QtQuick.Dialogs 1.1
import QtQuick.Window 2.1
ApplicationWindow {
id: window
visible: true
width: 640
height: 480
x: 30
y: 30
color: "dodgerblue"
Item {
anchors.fill: parent
Rectangle {
color: Qt.rgba(1, 1, 1, 0.7)
border.width: 1
border.color: "white"
anchors.bottomMargin: 15
anchors.horizontalCenter: parent.horizontalCenter
width : parent.width - 30
height: parent.height - 30
radius: 8
Text {
id: text1
anchors.centerIn: parent
text: "Hello World!"
font.pointSize: 24
visible: timer.tex1_visible
}
Text {
id: text2
anchors.centerIn: parent
text: "This is qmlglsrc demo!"
font.pointSize: 24
visible: timer.tex2_visible
}
Timer {
id: timer
property int count: 0
property int tex1_visible: 1
property int tex2_visible: 0
interval: 30; running: true; repeat: true
onTriggered: {
count++;
if (count%2 == 0) {
tex1_visible = 1;
tex2_visible = 0;
}
else {
tex1_visible = 0;
tex2_visible = 1;
}
}
}
}
}
}

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tests/examples/qt/qmlsrc/qml.qrc Normal file
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<RCC>
<qresource prefix="/">
<file>main.qml</file>
</qresource>
</RCC>