Source code
Revision control
Copy as Markdown
// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
// Qt-Security score:critical reason:network-protocol
#include "dmabufserverbufferintegration.h"
#include <QtOpenGL/QOpenGLTexture>
#include <QtGui/QOpenGLContext>
#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" << Qt::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" << Qt::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" << Qt::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" << Qt::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().size() > 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