diff options
Diffstat (limited to 'src/hardwareintegration/compositor/dmabuf-server/dmabufserverbufferintegration.cpp')
| -rw-r--r-- | src/hardwareintegration/compositor/dmabuf-server/dmabufserverbufferintegration.cpp | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/hardwareintegration/compositor/dmabuf-server/dmabufserverbufferintegration.cpp b/src/hardwareintegration/compositor/dmabuf-server/dmabufserverbufferintegration.cpp new file mode 100644 index 000000000..32171f5e2 --- /dev/null +++ b/src/hardwareintegration/compositor/dmabuf-server/dmabufserverbufferintegration.cpp @@ -0,0 +1,218 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or 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.GPL2 and 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-2.0.html and +** 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() +{ +} + +void 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; + } + + 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; + } + + 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; + } + + 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; + } + + 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; + } + + 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; + } + + QtWaylandServer::qt_dmabuf_server_buffer::init(compositor->display(), 1); +} + +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 |