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/*
* Copyright (C) 2020 Igalia S.L
*
* 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
* aint with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "PlatformDisplay.h"
#include "GStreamerCommon.h"
#if USE(GLX)
#include "GLContextGLX.h"
#include <gst/gl/x11/gstgldisplay_x11.h>
#endif
#if USE(EGL)
#include "GLContextEGL.h"
#include <gst/gl/egl/gstgldisplay_egl.h>
#endif
#if PLATFORM(X11)
#include "PlatformDisplayX11.h"
#endif
#if PLATFORM(WAYLAND)
#include "PlatformDisplayWayland.h"
#endif
#if USE(WPE_RENDERER)
#include "PlatformDisplayLibWPE.h"
#endif
#define GST_USE_UNSTABLE_API
#include <gst/gl/gl.h>
#undef GST_USE_UNSTABLE_API
GST_DEBUG_CATEGORY_EXTERN(webkit_media_player_debug);
#define GST_CAT_DEFAULT webkit_media_player_debug
using namespace WebCore;
static GstGLDisplay* createGstGLDisplay(const PlatformDisplay& sharedDisplay)
{
#if USE(WPE_RENDERER)
if (is<PlatformDisplayLibWPE>(sharedDisplay))
return GST_GL_DISPLAY(gst_gl_display_egl_new_with_egl_display(downcast<PlatformDisplayLibWPE>(sharedDisplay).eglDisplay()));
#endif
#if PLATFORM(X11)
#if USE(GLX)
if (is<PlatformDisplayX11>(sharedDisplay))
return GST_GL_DISPLAY(gst_gl_display_x11_new_with_display(downcast<PlatformDisplayX11>(sharedDisplay).native()));
#elif USE(EGL)
if (is<PlatformDisplayX11>(sharedDisplay))
return GST_GL_DISPLAY(gst_gl_display_egl_new_with_egl_display(downcast<PlatformDisplayX11>(sharedDisplay).eglDisplay()));
#endif
#endif
#if PLATFORM(WAYLAND)
if (is<PlatformDisplayWayland>(sharedDisplay))
return GST_GL_DISPLAY(gst_gl_display_egl_new_with_egl_display(downcast<PlatformDisplayWayland>(sharedDisplay).eglDisplay()));
#endif
return nullptr;
}
bool PlatformDisplay::tryEnsureGstGLContext() const
{
if (m_gstGLDisplay && m_gstGLContext)
return true;
#if USE(OPENGL_ES)
GstGLAPI glAPI = GST_GL_API_GLES2;
#elif USE(OPENGL)
GstGLAPI glAPI = GST_GL_API_OPENGL;
#else
return false;
#endif
auto* sharedContext = const_cast<PlatformDisplay*>(this)->sharingGLContext();
if (!sharedContext)
return false;
GCGLContext contextHandle = sharedContext->platformContext();
if (!contextHandle)
return false;
m_gstGLDisplay = adoptGRef(createGstGLDisplay(*this));
if (!m_gstGLDisplay)
return false;
GstGLPlatform glPlatform = sharedContext->isEGLContext() ? GST_GL_PLATFORM_EGL : GST_GL_PLATFORM_GLX;
m_gstGLContext = adoptGRef(gst_gl_context_new_wrapped(m_gstGLDisplay.get(), reinterpret_cast<guintptr>(contextHandle), glPlatform, glAPI));
// Activate and fill the GStreamer wrapped context with the Webkit's shared one.
auto* previousActiveContext = GLContext::current();
sharedContext->makeContextCurrent();
if (gst_gl_context_activate(m_gstGLContext.get(), TRUE)) {
GUniqueOutPtr<GError> error;
if (!gst_gl_context_fill_info(m_gstGLContext.get(), &error.outPtr()))
GST_WARNING("Failed to fill in GStreamer context: %s", error->message);
} else
GST_WARNING("Failed to activate GStreamer context %" GST_PTR_FORMAT, m_gstGLContext.get());
if (previousActiveContext)
previousActiveContext->makeContextCurrent();
return true;
}
GstGLDisplay* PlatformDisplay::gstGLDisplay() const
{
if (!tryEnsureGstGLContext())
return nullptr;
return m_gstGLDisplay.get();
}
GstGLContext* PlatformDisplay::gstGLContext() const
{
if (!tryEnsureGstGLContext())
return nullptr;
return m_gstGLContext.get();
}
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