qt-everywhere-src-5.14.1/qtwayland/src/hardwareintegration/compositor/dmabuf-server/dmabufserverbufferintegration.cpp - orbit - Git at Google

 /****************************************************************************
 **
 ** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:GPL$
 ** Commercial License Usage
 ** Licensees holding valid commercial Qt licenses may use this file in
 ** accordance with the commercial license agreement provided with the
 ** Software or, alternatively, in accordance with the terms contained in
 ** a written agreement between you and The Qt Company. For licensing terms
 ** and conditions see https://www.qt.io/terms-conditions. For further
 ** information use the contact form at https://www.qt.io/contact-us.
 **
 ** GNU General Public License Usage
 ** Alternatively, this file may be used under the terms of the GNU
 ** General Public License version 3 or (at your option) any later version
 ** approved by the KDE Free Qt Foundation. The licenses are as published by
 ** the Free Software Foundation and appearing in the file LICENSE.GPL3
 ** included in the packaging of this file. Please review the following
 ** information to ensure the GNU General Public License requirements will
 ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
 **
 ** $QT_END_LICENSE$
 **
 ****************************************************************************/

 #include "dmabufserverbufferintegration.h"

 #include <QtGui/QOpenGLContext>
 #include <QtGui/QOpenGLTexture>

 #include <drm_fourcc.h>
 #include <unistd.h>

 QT_BEGIN_NAMESPACE

 DmaBufServerBuffer::DmaBufServerBuffer(DmaBufServerBufferIntegration *integration, const QImage &qimage, QtWayland::ServerBuffer::Format format)
     : QtWayland::ServerBuffer(qimage.size(),format)
     , m_integration(integration)
 {
     m_format = format;

     EGLContext eglContext = eglGetCurrentContext();

     m_texture = new QOpenGLTexture(qimage);

     m_image  = m_integration->eglCreateImageKHR(eglContext, EGL_GL_TEXTURE_2D_KHR, (EGLClientBuffer)(unsigned long)m_texture->textureId(), nullptr);

     qCDebug(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer created egl image" << m_image;

     int err = eglGetError();
     if (err != EGL_SUCCESS || m_image == EGL_NO_IMAGE_KHR)
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer error creating EGL image" << hex << err;

     // TODO: formats with more than one plane

     int num_planes = 1;

     if (!m_integration->eglExportDMABUFImageQueryMESA(m_image, &m_fourcc_format, &num_planes, nullptr)) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: Failed to query egl image";
         qCDebug(qLcWaylandCompositorHardwareIntegration) << "error" << hex << eglGetError();
     } else {
         qCDebug(qLcWaylandCompositorHardwareIntegration) << "num_planes" << num_planes << "fourcc_format" << m_fourcc_format;
         if (num_planes != 1) {
             qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: multi-plane formats not supported";
             delete m_texture;
             m_texture = nullptr;
             m_integration->eglDestroyImageKHR(m_image);
             m_image = EGL_NO_IMAGE_KHR;
             return;
         }
     }

     if (!m_integration->eglExportDMABUFImageMESA(m_image, &m_fd, &m_stride, &m_offset)) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: Failed to export egl image. Error code" << hex << eglGetError();
     } else {
         qCDebug(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer exported egl image: fd" << m_fd << "stride" << m_stride << "offset" << m_offset;
         m_texture->release();
     }
 }

 DmaBufServerBuffer::~DmaBufServerBuffer()
 {
     delete m_texture;

     int err;
     m_integration->eglDestroyImageKHR(m_image);
     if ((err = eglGetError()) != EGL_SUCCESS)
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "~DmaBufServerBuffer: eglDestroyImageKHR error" << hex << err;

     err = ::close(m_fd);
     if (err)
         perror("~DmaBufServerBuffer:: error closing fd");

 }

 struct ::wl_resource *DmaBufServerBuffer::resourceForClient(struct ::wl_client *client)
 {
     auto *bufferResource = resourceMap().value(client);
     if (!bufferResource) {
         auto integrationResource = m_integration->resourceMap().value(client);
         if (!integrationResource) {
             qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer::resourceForClient: Trying to get resource for ServerBuffer. But client is not bound to the qt_dmabuf_server_buffer interface";
             return nullptr;
         }
         struct ::wl_resource *dmabuf_integration_resource = integrationResource->handle;

         Resource *resource = add(client, 1);
         m_integration->send_server_buffer_created(dmabuf_integration_resource, resource->handle, m_fd, m_size.width(), m_size.height(), m_stride, m_offset, m_fourcc_format);
         return resource->handle;
     }
     return bufferResource->handle;
 }


 QOpenGLTexture *DmaBufServerBuffer::toOpenGlTexture()
 {
     if (!m_texture) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer::toOpenGlTexture: no texture defined";
     }
     return m_texture;
 }

 bool DmaBufServerBuffer::bufferInUse()
 {
     return resourceMap().count() > 0;
 }

 DmaBufServerBufferIntegration::DmaBufServerBufferIntegration()
 {
 }

 DmaBufServerBufferIntegration::~DmaBufServerBufferIntegration()
 {
 }

 bool DmaBufServerBufferIntegration::initializeHardware(QWaylandCompositor *compositor)
 {
     Q_ASSERT(QGuiApplication::platformNativeInterface());

     m_egl_display = static_cast<EGLDisplay>(QGuiApplication::platformNativeInterface()->nativeResourceForIntegration("egldisplay"));
     if (!m_egl_display) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "Cannot initialize dmabuf server buffer integration. Missing egl display from platform plugin";
         return false;
     }

     const char *extensionString = eglQueryString(m_egl_display, EGL_EXTENSIONS);
     if (!extensionString || !strstr(extensionString, "EGL_KHR_image")) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. There is no EGL_KHR_image extension.";
         return false;
     }

     m_egl_create_image = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>(eglGetProcAddress("eglCreateImageKHR"));
     m_egl_destroy_image = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>(eglGetProcAddress("eglDestroyImageKHR"));
     if (!m_egl_create_image || !m_egl_destroy_image) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not resolve eglCreateImageKHR or eglDestroyImageKHR";
         return false;
     }

     m_gl_egl_image_target_texture_2d = reinterpret_cast<PFNGLEGLIMAGETARGETTEXTURE2DOESPROC>(eglGetProcAddress("glEGLImageTargetTexture2DOES"));
     if (!m_gl_egl_image_target_texture_2d) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find glEGLImageTargetTexture2DOES.";
         return false;
     }

     m_egl_export_dmabuf_image_query = reinterpret_cast<PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC>(eglGetProcAddress("eglExportDMABUFImageQueryMESA"));
     if (!m_egl_export_dmabuf_image_query) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find eglExportDMABUFImageQueryMESA.";
         return false;
     }

     m_egl_export_dmabuf_image = reinterpret_cast<PFNEGLEXPORTDMABUFIMAGEMESAPROC>(eglGetProcAddress("eglExportDMABUFImageMESA"));
     if (!m_egl_export_dmabuf_image) {
         qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find eglExportDMABUFImageMESA.";
         return false;
     }

     QtWaylandServer::qt_dmabuf_server_buffer::init(compositor->display(), 1);
     return true;
 }

 bool DmaBufServerBufferIntegration::supportsFormat(QtWayland::ServerBuffer::Format format) const
 {
     // TODO: 8-bit format support
     switch (format) {
     case QtWayland::ServerBuffer::RGBA32:
         return true;
     case QtWayland::ServerBuffer::A8:
         return false;
     default:
         return false;
     }
 }

 QtWayland::ServerBuffer *DmaBufServerBufferIntegration::createServerBufferFromImage(const QImage &qimage, QtWayland::ServerBuffer::Format format)
 {
     return new DmaBufServerBuffer(this, qimage, format);
 }

 void DmaBufServerBuffer::server_buffer_release(Resource *resource)
 {
     qCDebug(qLcWaylandCompositorHardwareIntegration) << "server_buffer RELEASE resource" << resource->handle << wl_resource_get_id(resource->handle) << "for client" << resource->client();
     wl_resource_destroy(resource->handle);
 }

 QT_END_NAMESPACE
	/****************************************************************************
	**
	** Copyright (C) 2018 The Qt Company Ltd.
	** Contact: https://www.qt.io/licensing/
	**
	** This file is part of the QtWaylandCompositor module of the Qt Toolkit.
	**
	** $QT_BEGIN_LICENSE:GPL$
	** Commercial License Usage
	** Licensees holding valid commercial Qt licenses may use this file in
	** accordance with the commercial license agreement provided with the
	** Software or, alternatively, in accordance with the terms contained in
	** a written agreement between you and The Qt Company. For licensing terms
	** and conditions see https://www.qt.io/terms-conditions. For further
	** information use the contact form at https://www.qt.io/contact-us.
	**
	** GNU General Public License Usage
	** Alternatively, this file may be used under the terms of the GNU
	** General Public License version 3 or (at your option) any later version
	** approved by the KDE Free Qt Foundation. The licenses are as published by
	** the Free Software Foundation and appearing in the file LICENSE.GPL3
	** included in the packaging of this file. Please review the following
	** information to ensure the GNU General Public License requirements will
	** be met: https://www.gnu.org/licenses/gpl-3.0.html.
	**
	** $QT_END_LICENSE$
	**
	****************************************************************************/

	#include "dmabufserverbufferintegration.h"

	#include <QtGui/QOpenGLContext>
	#include <QtGui/QOpenGLTexture>

	#include <drm_fourcc.h>
	#include <unistd.h>

	QT_BEGIN_NAMESPACE

	DmaBufServerBuffer::DmaBufServerBuffer(DmaBufServerBufferIntegration *integration, const QImage &qimage, QtWayland::ServerBuffer::Format format)
	: QtWayland::ServerBuffer(qimage.size(),format)
	, m_integration(integration)
	{
	m_format = format;

	EGLContext eglContext = eglGetCurrentContext();

	m_texture = new QOpenGLTexture(qimage);

	m_image = m_integration->eglCreateImageKHR(eglContext, EGL_GL_TEXTURE_2D_KHR, (EGLClientBuffer)(unsigned long)m_texture->textureId(), nullptr);

	qCDebug(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer created egl image" << m_image;

	int err = eglGetError();
	if (err != EGL_SUCCESS \|\| m_image == EGL_NO_IMAGE_KHR)
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer error creating EGL image" << hex << err;

	// TODO: formats with more than one plane

	int num_planes = 1;

	if (!m_integration->eglExportDMABUFImageQueryMESA(m_image, &m_fourcc_format, &num_planes, nullptr)) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: Failed to query egl image";
	qCDebug(qLcWaylandCompositorHardwareIntegration) << "error" << hex << eglGetError();
	} else {
	qCDebug(qLcWaylandCompositorHardwareIntegration) << "num_planes" << num_planes << "fourcc_format" << m_fourcc_format;
	if (num_planes != 1) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: multi-plane formats not supported";
	delete m_texture;
	m_texture = nullptr;
	m_integration->eglDestroyImageKHR(m_image);
	m_image = EGL_NO_IMAGE_KHR;
	return;
	}
	}

	if (!m_integration->eglExportDMABUFImageMESA(m_image, &m_fd, &m_stride, &m_offset)) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer: Failed to export egl image. Error code" << hex << eglGetError();
	} else {
	qCDebug(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer exported egl image: fd" << m_fd << "stride" << m_stride << "offset" << m_offset;
	m_texture->release();
	}
	}

	DmaBufServerBuffer::~DmaBufServerBuffer()
	{
	delete m_texture;

	int err;
	m_integration->eglDestroyImageKHR(m_image);
	if ((err = eglGetError()) != EGL_SUCCESS)
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "~DmaBufServerBuffer: eglDestroyImageKHR error" << hex << err;

	err = ::close(m_fd);
	if (err)
	perror("~DmaBufServerBuffer:: error closing fd");

	}

	struct ::wl_resource DmaBufServerBuffer::resourceForClient(struct ::wl_client client)
	{
	auto *bufferResource = resourceMap().value(client);
	if (!bufferResource) {
	auto integrationResource = m_integration->resourceMap().value(client);
	if (!integrationResource) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer::resourceForClient: Trying to get resource for ServerBuffer. But client is not bound to the qt_dmabuf_server_buffer interface";
	return nullptr;
	}
	struct ::wl_resource *dmabuf_integration_resource = integrationResource->handle;

	Resource *resource = add(client, 1);
	m_integration->send_server_buffer_created(dmabuf_integration_resource, resource->handle, m_fd, m_size.width(), m_size.height(), m_stride, m_offset, m_fourcc_format);
	return resource->handle;
	}
	return bufferResource->handle;
	}


	QOpenGLTexture *DmaBufServerBuffer::toOpenGlTexture()
	{
	if (!m_texture) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "DmaBufServerBuffer::toOpenGlTexture: no texture defined";
	}
	return m_texture;
	}

	bool DmaBufServerBuffer::bufferInUse()
	{
	return resourceMap().count() > 0;
	}

	DmaBufServerBufferIntegration::DmaBufServerBufferIntegration()
	{
	}

	DmaBufServerBufferIntegration::~DmaBufServerBufferIntegration()
	{
	}

	bool DmaBufServerBufferIntegration::initializeHardware(QWaylandCompositor *compositor)
	{
	Q_ASSERT(QGuiApplication::platformNativeInterface());

	m_egl_display = static_cast<EGLDisplay>(QGuiApplication::platformNativeInterface()->nativeResourceForIntegration("egldisplay"));
	if (!m_egl_display) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "Cannot initialize dmabuf server buffer integration. Missing egl display from platform plugin";
	return false;
	}

	const char *extensionString = eglQueryString(m_egl_display, EGL_EXTENSIONS);
	if (!extensionString \|\| !strstr(extensionString, "EGL_KHR_image")) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. There is no EGL_KHR_image extension.";
	return false;
	}

	m_egl_create_image = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC>(eglGetProcAddress("eglCreateImageKHR"));
	m_egl_destroy_image = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC>(eglGetProcAddress("eglDestroyImageKHR"));
	if (!m_egl_create_image \|\| !m_egl_destroy_image) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not resolve eglCreateImageKHR or eglDestroyImageKHR";
	return false;
	}

	m_gl_egl_image_target_texture_2d = reinterpret_cast<PFNGLEGLIMAGETARGETTEXTURE2DOESPROC>(eglGetProcAddress("glEGLImageTargetTexture2DOES"));
	if (!m_gl_egl_image_target_texture_2d) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find glEGLImageTargetTexture2DOES.";
	return false;
	}

	m_egl_export_dmabuf_image_query = reinterpret_cast<PFNEGLEXPORTDMABUFIMAGEQUERYMESAPROC>(eglGetProcAddress("eglExportDMABUFImageQueryMESA"));
	if (!m_egl_export_dmabuf_image_query) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find eglExportDMABUFImageQueryMESA.";
	return false;
	}

	m_egl_export_dmabuf_image = reinterpret_cast<PFNEGLEXPORTDMABUFIMAGEMESAPROC>(eglGetProcAddress("eglExportDMABUFImageMESA"));
	if (!m_egl_export_dmabuf_image) {
	qCWarning(qLcWaylandCompositorHardwareIntegration) << "Failed to initialize dmabuf server buffer integration. Could not find eglExportDMABUFImageMESA.";
	return false;
	}

	QtWaylandServer::qt_dmabuf_server_buffer::init(compositor->display(), 1);
	return true;
	}

	bool DmaBufServerBufferIntegration::supportsFormat(QtWayland::ServerBuffer::Format format) const
	{
	// TODO: 8-bit format support
	switch (format) {
	case QtWayland::ServerBuffer::RGBA32:
	return true;
	case QtWayland::ServerBuffer::A8:
	return false;
	default:
	return false;
	}
	}

	QtWayland::ServerBuffer *DmaBufServerBufferIntegration::createServerBufferFromImage(const QImage &qimage, QtWayland::ServerBuffer::Format format)
	{
	return new DmaBufServerBuffer(this, qimage, format);
	}

	void DmaBufServerBuffer::server_buffer_release(Resource *resource)
	{
	qCDebug(qLcWaylandCompositorHardwareIntegration) << "server_buffer RELEASE resource" << resource->handle << wl_resource_get_id(resource->handle) << "for client" << resource->client();
	wl_resource_destroy(resource->handle);
	}

	QT_END_NAMESPACE