Add a libhybris hardwareintegrations to share EGL server buffers

Add a hardwareintegration plugin to make Qt server side EGL buffers
shareable from the compositor to the client, such as what the
server-buffer example does.

Change-Id: I24558324d51202ca449b47b0ee395c8e81c10698
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>

1 files changed, 197 insertions, 0 deletions

diff --git a/src/hardwareintegration/compositor/libhybris-egl-server/libhybriseglserverbufferintegration.cpp b/src/hardwareintegration/compositor/libhybris-egl-server/libhybriseglserverbufferintegration.cpp
new file mode 100644
index 000000000..c15f3d154
--- /dev/null
+++ b/src/hardwareintegration/compositor/libhybris-egl-server/libhybriseglserverbufferintegration.cpp
@@ -0,0 +1,197 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Jolla Ltd, author: <giulio.camuffo@jollamobile.com>
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the Qt Compositor.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+**     of its contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "libhybriseglserverbufferintegration.h"
+
+#include <QtGui/QOpenGLContext>
+#include <hybris/eglplatformcommon/hybris_nativebufferext.h>
+#include <wayland-server.h>
+
+QT_BEGIN_NAMESPACE
+LibHybrisEglServerBuffer::LibHybrisEglServerBuffer(LibHybrisEglServerBufferIntegration *integration, const QSize &size, QtWayland::ServerBuffer::Format format)
+    : QtWayland::ServerBuffer(size,format)
+    , m_integration(integration)
+{
+    m_format = format;
+
+    EGLint egl_format;
+    switch (m_format) {
+        case RGBA32:
+            m_hybris_format = QtWaylandServer::qt_libhybris_egl_server_buffer::format_RGBA32;
+            egl_format = HYBRIS_PIXEL_FORMAT_RGBA_8888;
+            break;
+        default:
+            qWarning("LibHybrisEglServerBuffer: unsupported format");
+            m_hybris_format = QtWaylandServer::qt_libhybris_egl_server_buffer::format_RGBA32;
+            egl_format = HYBRIS_PIXEL_FORMAT_RGBA_8888;
+            break;
+    }
+
+    if (!m_integration->eglHybrisCreateNativeBuffer(size.width(), size.height(), HYBRIS_USAGE_HW_TEXTURE, egl_format, &m_stride, &m_buffer)) {
+        qWarning("LibHybrisEglServerBuffer: Failed to create egl buffer");
+        return;
+    }
+
+    int numInts;
+    int numFds;
+    m_integration->eglHybrisGetNativeBufferInfo(m_buffer, &numInts, &numFds);
+    m_ints.resize(numInts);
+    m_fds.resize(numFds);
+    m_integration->eglHybrisSerializeNativeBuffer(m_buffer, m_ints.data(), m_fds.data());
+
+    m_image = m_integration->eglCreateImageKHR(EGL_NO_CONTEXT, EGL_NATIVE_BUFFER_ANDROID, m_buffer, 0);
+}
+
+struct ::wl_resource *LibHybrisEglServerBuffer::resourceForClient(struct ::wl_client *client)
+{
+    QMultiMap<struct ::wl_client *, Resource *>::iterator it = resourceMap().find(client);
+    if (it == resourceMap().end()) {
+        QMultiMap<struct ::wl_client *, QtWaylandServer::qt_libhybris_egl_server_buffer::Resource *>::iterator egl_it = m_integration->resourceMap().find(client);
+        if (egl_it == m_integration->resourceMap().end()) {
+            qWarning("LibHybrisEglServerBuffer::resourceForClient: Trying to get resource for ServerBuffer. But client is not bound to the libhybris_egl interface");
+            return 0;
+        }
+        struct ::wl_resource *egl_resource = (*egl_it)->handle;
+        Resource *resource = add(client);
+        wl_resource *bufRes = wl_client_new_object(client, &qt_libhybris_buffer_interface, 0, 0);
+
+        m_integration->send_server_buffer_created(egl_resource, resource->handle, bufRes, m_fds.size(), QByteArray((char *)m_ints.data(), m_ints.size() * sizeof(int32_t)),
+                                    m_name, m_size.width(), m_size.height(), m_stride, m_format);
+
+        m_qtbuffers.insert(resource, bufRes);
+
+        for (int i = 0; i < m_fds.size(); ++i) {
+            send_add_fd(resource->handle, m_fds.at(i));
+        }
+
+        return bufRes;
+    }
+    return m_qtbuffers.value(*it);
+}
+
+void LibHybrisEglServerBuffer::bindTextureToBuffer()
+{
+    if (!QOpenGLContext::currentContext()) {
+        qWarning("LibHybrisEglServerBuffer: No current context when creating buffer. Texture loading will fail");
+        return;
+    }
+
+    m_integration->glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, m_image);
+
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
+    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
+}
+
+LibHybrisEglServerBufferIntegration::LibHybrisEglServerBufferIntegration()
+{
+}
+
+LibHybrisEglServerBufferIntegration::~LibHybrisEglServerBufferIntegration()
+{
+}
+
+void LibHybrisEglServerBufferIntegration::initializeHardware(QWaylandCompositor *compositor)
+{
+    QWindow *window = compositor->window();
+    Q_ASSERT(QGuiApplication::platformNativeInterface());
+
+    m_egl_display = static_cast<EGLDisplay>(QGuiApplication::platformNativeInterface()->nativeResourceForWindow("egldisplay", window));
+    if (!m_egl_display) {
+        qWarning("Cant initialize libhybris egl server buffer integration. Missing egl display from platformplugin");
+        return;
+    }
+
+    m_egl_create_buffer = reinterpret_cast<PFNEGLHYBRISCREATENATIVEBUFFERPROC>(eglGetProcAddress("eglHybrisCreateNativeBuffer"));
+    if (!m_egl_create_buffer) {
+        qWarning("Failed to initialize libhybris egl server buffer integration. Could not find eglHybrisCreateNativeBuffer.\n");
+        return;
+    }
+    m_egl_get_buffer_info = reinterpret_cast<PFNEGLHYBRISGETNATIVEBUFFERINFOPROC>(eglGetProcAddress("eglHybrisGetNativeBufferInfo"));
+    if (!m_egl_get_buffer_info) {
+        qWarning("Failed to initialize libhybris egl server buffer integration. Could not find eglHybrisGetNativeBufferInfo.\n");
+        return;
+    }
+    m_egl_serialize_buffer = reinterpret_cast<PFNEGLHYBRISSERIALIZENATIVEBUFFERPROC>(eglGetProcAddress("eglHybrisSerializeNativeBuffer"));
+    if (!m_egl_serialize_buffer) {
+        qWarning("Failed to initialize libhybris egl server buffer integration. Could not find eglHybrisSerializeNativeBuffer.\n");
+        return;
+    }
+
+    const char *extensionString = eglQueryString(m_egl_display, EGL_EXTENSIONS);
+    if (!extensionString || !strstr(extensionString, "EGL_KHR_image")) {
+        qWarning("Failed to initialize libhybris egl server buffer integration. There is no EGL_KHR_image extension.\n");
+        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) {
+        qWarning("Failed to initialize libhybris egl 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) {
+        qWarning("Failed to initialize libhybris egl server buffer integration. Could not find glEGLImageTargetTexture2DOES.\n");
+        return;
+    }
+
+    QtWaylandServer::qt_libhybris_egl_server_buffer::init(compositor->waylandDisplay());
+}
+
+bool LibHybrisEglServerBufferIntegration::supportsFormat(QtWayland::ServerBuffer::Format format) const
+{
+    switch (format) {
+        case QtWayland::ServerBuffer::RGBA32:
+            return true;
+        case QtWayland::ServerBuffer::A8:
+            return false;
+        default:
+            return false;
+    }
+}
+
+QtWayland::ServerBuffer *LibHybrisEglServerBufferIntegration::createServerBuffer(const QSize &size, QtWayland::ServerBuffer::Format format)
+{
+    return new LibHybrisEglServerBuffer(this, size, format);
+}
+
+QT_END_NAMESPACE