Support removal of DRI platform

ui/gfx/ozone/impl/dri_surface_factory.cc

Index: ui/gfx/ozone/impl/dri_surface_factory.cc
diff --git a/ui/gfx/ozone/impl/dri_surface_factory.cc b/ui/gfx/ozone/impl/dri_surface_factory.cc
deleted file mode 100644
index 41a4215e01658ff429081773be9099b9f01a42c6..0000000000000000000000000000000000000000
--- a/ui/gfx/ozone/impl/dri_surface_factory.cc
+++ /dev/null
@@ -1,315 +0,0 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/gfx/ozone/impl/dri_surface_factory.h"
-
-#include <drm.h>
-#include <errno.h>
-#include <xf86drm.h>
-
-#include "base/message_loop/message_loop.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "third_party/skia/include/core/SkDevice.h"
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/ozone/impl/dri_skbitmap.h"
-#include "ui/gfx/ozone/impl/dri_surface.h"
-#include "ui/gfx/ozone/impl/dri_wrapper.h"
-#include "ui/gfx/ozone/impl/hardware_display_controller.h"
-
-namespace gfx {
-
-namespace {
-
-const char kDefaultGraphicsCardPath[] = "/dev/dri/card0";
-const char kDPMSProperty[] = "DPMS";
-
-const gfx::AcceleratedWidget kDefaultWidgetHandle = 1;
-
-// DRM callback on page flip events. This callback is triggered after the
-// page flip has happened and the backbuffer is now the new frontbuffer
-// The old frontbuffer is no longer used by the hardware and can be used for
-// future draw operations.
-//
-// |device| will contain a reference to the |DriSurface| object which
-// the event belongs to.
-//
-// TODO(dnicoara) When we have a FD handler for the DRM calls in the message
-// loop, we can move this function in the handler.
-void HandlePageFlipEvent(int fd,
-                         unsigned int frame,
-                         unsigned int seconds,
-                         unsigned int useconds,
-                         void* controller) {
-  static_cast<HardwareDisplayController*>(controller)->get_surface()
-      ->SwapBuffers();
-}
-
-uint32_t GetDriProperty(int fd, drmModeConnector* connector, const char* name) {
-  for (int i = 0; i < connector->count_props; ++i) {
-    drmModePropertyPtr property = drmModeGetProperty(fd, connector->props[i]);
-    if (!property)
-      continue;
-
-    if (strcmp(property->name, name) == 0) {
-      uint32_t id = property->prop_id;
-      drmModeFreeProperty(property);
-      return id;
-    }
-
-    drmModeFreeProperty(property);
-  }
-  return 0;
-}
-
-uint32_t GetCrtc(int fd, drmModeRes* resources, drmModeConnector* connector) {
-  // If the connector already has an encoder try to re-use.
-  if (connector->encoder_id) {
-    drmModeEncoder* encoder = drmModeGetEncoder(fd, connector->encoder_id);
-    if (encoder) {
-      if (encoder->crtc_id) {
-        uint32_t crtc = encoder->crtc_id;
-        drmModeFreeEncoder(encoder);
-        return crtc;
-      }
-      drmModeFreeEncoder(encoder);
-    }
-  }
-
-  // Try to find an encoder for the connector.
-  for (int i = 0; i < connector->count_encoders; ++i) {
-    drmModeEncoder* encoder = drmModeGetEncoder(fd, connector->encoders[i]);
-    if (!encoder)
-      continue;
-
-    for (int j = 0; j < resources->count_crtcs; ++j) {
-      // Check if the encoder is compatible with this CRTC
-      if (!(encoder->possible_crtcs & (1 << j)))
-        continue;
-
-      drmModeFreeEncoder(encoder);
-      return resources->crtcs[j];
-    }
-  }
-
-  return 0;
-}
-
-}  // namespace
-
-DriSurfaceFactory::DriSurfaceFactory()
-    : drm_(),
-      state_(UNINITIALIZED),
-      controller_() {
-}
-
-DriSurfaceFactory::~DriSurfaceFactory() {
-  if (state_ == INITIALIZED)
-    ShutdownHardware();
-}
-
-SurfaceFactoryOzone::HardwareState
-DriSurfaceFactory::InitializeHardware() {
-  CHECK(state_ == UNINITIALIZED);
-
-  // TODO(dnicoara): Short-cut right now. What we want is to look at all the
-  // graphics devices available and select the primary one.
-  drm_.reset(CreateWrapper());
-  if (drm_->get_fd() < 0) {
-    LOG(ERROR) << "Cannot open graphics card '"
-               << kDefaultGraphicsCardPath << "': " << strerror(errno);
-    state_ = FAILED;
-    return state_;
-  }
-
-  state_ = INITIALIZED;
-  return state_;
-}
-
-void DriSurfaceFactory::ShutdownHardware() {
-  CHECK(state_ == INITIALIZED);
-
-  controller_.reset();
-  drm_.reset();
-
-  state_ = UNINITIALIZED;
-}
-
-gfx::AcceleratedWidget DriSurfaceFactory::GetAcceleratedWidget() {
-  CHECK(state_ != FAILED);
-
-  // TODO(dnicoara) When there's more information on which display we want,
-  // then we can return the widget associated with the display.
-  // For now just assume we have 1 display device and return it.
-  if (!controller_.get())
-    controller_.reset(new HardwareDisplayController());
-
-  // TODO(dnicoara) We only have 1 display for now, so only 1 AcceleratedWidget.
-  // When we'll support multiple displays this needs to be changed to return a
-  // different handle for every display.
-  return kDefaultWidgetHandle;
-}
-
-gfx::AcceleratedWidget DriSurfaceFactory::RealizeAcceleratedWidget(
-    gfx::AcceleratedWidget w) {
-  CHECK(state_ == INITIALIZED);
-  // TODO(dnicoara) Once we can handle multiple displays this needs to be
-  // changed.
-  CHECK(w == kDefaultWidgetHandle);
-
-  CHECK(controller_->get_state() ==
-        HardwareDisplayController::UNASSOCIATED);
-
-  // Until now the controller is just a stub. Initializing it will link it to a
-  // hardware display.
-  if (!InitializeControllerForPrimaryDisplay(drm_.get(), controller_.get())) {
-    LOG(ERROR) << "Failed to initialize controller";
-    return gfx::kNullAcceleratedWidget;
-  }
-
-  // Create a surface suitable for the current controller.
-  scoped_ptr<DriSurface> surface(CreateSurface(controller_.get()));
-
-  if (!surface->Initialize()) {
-    LOG(ERROR) << "Failed to initialize surface";
-    return gfx::kNullAcceleratedWidget;
-  }
-
-  // Bind the surface to the controller. This will register the backing buffers
-  // with the hardware CRTC such that we can show the buffers. The controller
-  // takes ownership of the surface.
-  if (!controller_->BindSurfaceToController(surface.Pass())) {
-    LOG(ERROR) << "Failed to bind surface to controller";
-    return gfx::kNullAcceleratedWidget;
-  }
-
-  return reinterpret_cast<gfx::AcceleratedWidget>(controller_->get_surface());
-}
-
-bool DriSurfaceFactory::LoadEGLGLES2Bindings(
-      AddGLLibraryCallback add_gl_library,
-      SetGLGetProcAddressProcCallback set_gl_get_proc_address) {
-  return false;
-}
-
-bool DriSurfaceFactory::AttemptToResizeAcceleratedWidget(
-    gfx::AcceleratedWidget w,
-    const gfx::Rect& bounds) {
-  return false;
-}
-
-bool DriSurfaceFactory::SchedulePageFlip(gfx::AcceleratedWidget w) {
-  CHECK(state_ == INITIALIZED);
-  // TODO(dnicoara) Change this CHECK once we're running with the threaded
-  // compositor.
-  CHECK(base::MessageLoop::current()->type() == base::MessageLoop::TYPE_UI);
-
-  // TODO(dnicoara) Once we can handle multiple displays this needs to be
-  // changed.
-  CHECK(w == kDefaultWidgetHandle);
-
-  if (!controller_->SchedulePageFlip())
-    return false;
-
-  // Only wait for the page flip event to finish if it was properly scheduled.
-  //
-  // TODO(dnicoara) The following call will wait for the page flip event to
-  // complete. This means that it will block until the next VSync. Ideally the
-  // wait should happen in the message loop. The message loop would then
-  // schedule the next draw event. Alternatively, the VSyncProvider could be
-  // used to schedule the next draw. Unfortunately, at this point,
-  // DriOutputDevice does not provide any means to use any of the above
-  // solutions. Note that if the DRM callback does not schedule the next draw,
-  // then some sort of synchronization needs to take place since starting a new
-  // draw before the page flip happened is considered an error. However we can
-  // not use any lock constructs unless we're using the threaded compositor.
-  // Note that the following call does not use any locks, so it is safe to be
-  // made on the UI thread (thought not ideal).
-  WaitForPageFlipEvent(drm_->get_fd());
-
-  return true;
-}
-
-SkCanvas* DriSurfaceFactory::GetCanvasForWidget(
-    gfx::AcceleratedWidget w) {
-  CHECK(state_ == INITIALIZED);
-  return reinterpret_cast<DriSurface*>(w)->GetDrawableForWidget();
-}
-
-gfx::VSyncProvider* DriSurfaceFactory::GetVSyncProvider(
-    gfx::AcceleratedWidget w) {
-  return NULL;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// DriSurfaceFactory private
-
-DriSurface* DriSurfaceFactory::CreateSurface(
-    HardwareDisplayController* controller) {
-  return new DriSurface(controller);
-}
-
-DriWrapper* DriSurfaceFactory::CreateWrapper() {
-  return new DriWrapper(kDefaultGraphicsCardPath);
-}
-
-bool DriSurfaceFactory::InitializeControllerForPrimaryDisplay(
-    DriWrapper* drm,
-    HardwareDisplayController* controller) {
-  CHECK(state_ == SurfaceFactoryOzone::INITIALIZED);
-
-  drmModeRes* resources = drmModeGetResources(drm->get_fd());
-
-  // Search for an active connector.
-  for (int i = 0; i < resources->count_connectors; ++i) {
-    drmModeConnector* connector = drmModeGetConnector(
-        drm->get_fd(),
-        resources->connectors[i]);
-
-    if (!connector)
-      continue;
-
-    if (connector->connection != DRM_MODE_CONNECTED ||
-        connector->count_modes == 0) {
-      drmModeFreeConnector(connector);
-      continue;
-    }
-
-    uint32_t crtc = GetCrtc(drm->get_fd(), resources, connector);
-
-    if (!crtc)
-      continue;
-
-    uint32_t dpms_property_id = GetDriProperty(drm->get_fd(),
-                                               connector,
-                                               kDPMSProperty);
-
-    // TODO(dnicoara) Select one mode for now. In the future we may need to
-    // save all the modes and allow the user to choose a specific mode. Or
-    // even some fullscreen applications may need to change the mode.
-    controller->SetControllerInfo(
-        drm,
-        connector->connector_id,
-        crtc,
-        dpms_property_id,
-        connector->modes[0]);
-
-    drmModeFreeConnector(connector);
-
-    return true;
-  }
-
-  return false;
-}
-
-void DriSurfaceFactory::WaitForPageFlipEvent(int fd) {
-  drmEventContext drm_event;
-  drm_event.version = DRM_EVENT_CONTEXT_VERSION;
-  drm_event.page_flip_handler = HandlePageFlipEvent;
-  drm_event.vblank_handler = NULL;
-
-  // Wait for the page-flip to complete.
-  drmHandleEvent(fd, &drm_event);
-}
-
-}  // namespace gfx