ui/ozone/platform/dri/hardware_display_plane_manager_legacy.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/ozone/platform/dri/hardware_display_plane_manager_legacy.h"
   6
   7 #include "base/bind.h"
   8 #include "ui/ozone/platform/dri/crtc_controller.h"
   9 #include "ui/ozone/platform/dri/drm_device.h"
  10 #include "ui/ozone/platform/dri/scanout_buffer.h"
  11
  12 namespace ui {
  13
  14 HardwareDisplayPlaneManagerLegacy::HardwareDisplayPlaneManagerLegacy() {
  15 }
  16
  17 HardwareDisplayPlaneManagerLegacy::~HardwareDisplayPlaneManagerLegacy() {
  18 }
  19
  20 bool HardwareDisplayPlaneManagerLegacy::Commit(
  21     HardwareDisplayPlaneList* plane_list,
  22     bool is_sync) {
  23   if (plane_list->plane_list.empty())  // No assigned planes, nothing to do.
  24     return true;
  25   bool ret = true;
  26   // The order of operations here (set new planes, pageflip, clear old planes)
  27   // is designed to minimze the chance of a significant artifact occurring.
  28   // The planes must be updated first because the main plane no longer contains
  29   // their content. The old planes are removed last because the previous primary
  30   // plane used them as overlays and thus didn't contain their content, so we
  31   // must first flip to the new primary plane, which does. The error here will
  32   // be the delta of (new contents, old contents), but it should be barely
  33   // noticeable.
  34   for (const auto& flip : plane_list->legacy_page_flips) {
  35     // Permission Denied is a legitimate error
  36     for (const auto& plane : flip.planes) {
  37       if (!drm_->PageFlipOverlay(flip.crtc_id, plane.framebuffer, plane.bounds,
  38                                  plane.src_rect, plane.plane)) {
  39         LOG(ERROR) << "Cannot display plane on overlay: error="
  40                    << strerror(errno) << "crtc=" << flip.crtc
  41                    << " plane=" << plane.plane;
  42         ret = false;
  43         flip.crtc->PageFlipFailed();
  44         break;
  45       }
  46     }
  47     if (!drm_->PageFlip(flip.crtc_id, flip.framebuffer, is_sync,
  48                         base::Bind(&CrtcController::OnPageFlipEvent,
  49                                    flip.crtc->AsWeakPtr()))) {
  50       if (errno != EACCES) {
  51         LOG(ERROR) << "Cannot page flip: error='" << strerror(errno) << "'"
  52                    << " crtc=" << flip.crtc_id
  53                    << " framebuffer=" << flip.framebuffer
  54                    << " is_sync=" << is_sync;
  55         LOG(ERROR) << "Failed to commit planes";
  56         ret = false;
  57       }
  58       flip.crtc->PageFlipFailed();
  59     }
  60   }
  61   // For each element in |old_plane_list|, if it hasn't been reclaimed (by
  62   // this or any other HDPL), clear the overlay contents.
  63   for (HardwareDisplayPlane* plane : plane_list->old_plane_list) {
  64     if (!plane->in_use()) {
  65       // This plane is being released, so we need to zero it.
  66       if (!drm_->PageFlipOverlay(plane->owning_crtc(), 0, gfx::Rect(),
  67                                  gfx::Rect(), plane->plane_id())) {
  68         LOG(ERROR) << "Cannot free overlay: error=" << strerror(errno)
  69                    << "crtc=" << plane->owning_crtc()
  70                    << " plane=" << plane->plane_id();
  71         ret = false;
  72         break;
  73       }
  74     }
  75   }
  76   plane_list->plane_list.swap(plane_list->old_plane_list);
  77   plane_list->plane_list.clear();
  78   plane_list->legacy_page_flips.clear();
  79   plane_list->committed = true;
  80   return ret;
  81 }
  82
  83 bool HardwareDisplayPlaneManagerLegacy::SetPlaneData(
  84     HardwareDisplayPlaneList* plane_list,
  85     HardwareDisplayPlane* hw_plane,
  86     const OverlayPlane& overlay,
  87     uint32_t crtc_id,
  88     const gfx::Rect& src_rect,
  89     CrtcController* crtc) {
  90   if (plane_list->legacy_page_flips.empty() ||
  91       plane_list->legacy_page_flips.back().crtc_id != crtc_id) {
  92     plane_list->legacy_page_flips.push_back(
  93         HardwareDisplayPlaneList::PageFlipInfo(
  94             crtc_id, overlay.buffer->GetFramebufferId(), hw_plane->plane_id(),
  95             crtc));
  96   } else {
  97     plane_list->legacy_page_flips.back().planes.push_back(
  98         HardwareDisplayPlaneList::PageFlipInfo::Plane(
  99             hw_plane->plane_id(), overlay.buffer->GetFramebufferId(),
 100             overlay.display_bounds, src_rect));
 101   }
 102   return true;
 103 }
 104
 105 }  // namespace ui