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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"
#if USE(GSTREAMER_GL)
#include "GLContext.h"
#include "GStreamerCommon.h"
#define GST_USE_UNSTABLE_API
#include <gst/gl/gl.h>
#if GST_GL_HAVE_PLATFORM_EGL
#include <gst/gl/egl/gstgldisplay_egl.h>
#endif
#undef GST_USE_UNSTABLE_API
#include <wtf/glib/GUniquePtr.h>
GST_DEBUG_CATEGORY(webkit_display_debug);
#define GST_CAT_DEFAULT webkit_display_debug
namespace WebCore {
static void ensureDebugCategoryInitialized()
{
static std::once_flag debugRegisteredFlag;
std::call_once(debugRegisteredFlag, [] {
GST_DEBUG_CATEGORY_INIT(webkit_display_debug, "webkitdisplay", 0, "WebKit Display");
});
}
GstGLDisplay* PlatformDisplay::gstGLDisplay() const
{
ensureDebugCategoryInitialized();
if (!m_gstGLDisplay)
m_gstGLDisplay = adoptGRef(GST_GL_DISPLAY(gst_gl_display_egl_new_with_egl_display(eglDisplay())));
GST_TRACE("Using GL display %" GST_PTR_FORMAT, m_gstGLDisplay.get());
return m_gstGLDisplay.get();
}
GstGLContext* PlatformDisplay::gstGLContext() const
{
ensureDebugCategoryInitialized();
if (m_gstGLContext)
return m_gstGLContext.get();
auto* gstDisplay = gstGLDisplay();
if (!gstDisplay) {
GST_ERROR("No GL display");
return nullptr;
}
auto* context = const_cast<PlatformDisplay*>(this)->sharingGLContext();
if (!context) {
GST_ERROR("No sharing GL context");
return nullptr;
}
m_gstGLContext = adoptGRef(gst_gl_context_new_wrapped(gstDisplay, reinterpret_cast<guintptr>(context->platformContext()), GST_GL_PLATFORM_EGL, GST_GL_API_GLES2));
{
GLContext::ScopedGLContextCurrent scopedCurrent(*context);
if (gst_gl_context_activate(m_gstGLContext.get(), TRUE)) {
GUniqueOutPtr<GError> error;
if (!gst_gl_context_fill_info(m_gstGLContext.get(), &error.outPtr()))
GST_ERROR("Failed to fill in GStreamer context: %s", error->message);
gst_gl_context_activate(m_gstGLContext.get(), FALSE);
}
}
GST_DEBUG("Created GL context %" GST_PTR_FORMAT, m_gstGLContext.get());
return m_gstGLContext.get();
}
void PlatformDisplay::clearGStreamerGLState()
{
m_gstGLDisplay = nullptr;
m_gstGLContext = nullptr;
}
} // namespace WebCore
#undef GST_CAT_DEFAULT
#endif // USE(GSTREAMER_GL)
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