Start plumbing drm atomic swap.

ui/ozone/platform/dri/hardware_display_plane.cc

+// Copyright 2014 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/ozone/platform/dri/hardware_display_plane.h"
+
+#include <drm.h>
+#include <errno.h>
+#include <xf86drm.h>
+
+#include "base/logging.h"
+#include "ui/gfx/geometry/rect.h"
+#include "ui/ozone/platform/dri/dri_wrapper.h"
+#include "ui/ozone/platform/dri/scoped_drm_types.h"
+
+namespace ui {
+
+namespace {
+const char* kCrtcPropName = "CRTC_ID";
+const char* kFbPropName = "FB_ID";
+const char* kCrtcXPropName = "CRTC_X";
+const char* kCrtcYPropName = "CRTC_Y";
+const char* kCrtcWPropName = "CRTC_W";
+const char* kCrtcHPropName = "CRTC_H";
+const char* kSrcXPropName = "SRC_X";
+const char* kSrcYPropName = "SRC_Y";
+const char* kSrcWPropName = "SRC_W";
+const char* kSrcHPropName = "SRC_H";
+}
+
+HardwareDisplayPlane::Property::Property() : id_(0) {
+}
+
+bool HardwareDisplayPlane::Property::Initialize(
+    DriWrapper* drm,
+    const char* name,
+    drmModeObjectPropertiesPtr plane_props) {
+  for (uint32_t i = 0; i < plane_props->count_props; i++) {
+    ScopedDrmPropertyPtr property(
+        drmModeGetProperty(drm->get_fd(), plane_props->props[i]));
+    if (!strcmp(property->name, name)) {
+      id_ = property->prop_id;
+      break;
+    }
+  }
+  if (!id_) {
+    LOG(ERROR) << "Could not find property " << name;
+    return false;
+  }
+  return true;
+}
+
+HardwareDisplayPlane::HardwareDisplayPlane(
+    DriWrapper* drm,
+    drmModePropertySetPtr atomic_property_set,
+    drmModePlanePtr plane,
+    uint32_t plane_id)
+    : drm_(drm), property_set_(atomic_property_set), plane_(plane) {
+}
+
+HardwareDisplayPlane::~HardwareDisplayPlane() {
+}
+
+bool HardwareDisplayPlane::SetPlaneData(uint32_t crtc_id,
+                                        uint32_t framebuffer,
+                                        const gfx::Rect& crtc_rect,
+                                        const gfx::Rect& src_rect) {
+  int plane_set_error =
+      drmModePropertySetAdd(
+          property_set_, plane_id_, crtc_prop_.id_, crtc_id) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, fb_prop_.id_, framebuffer) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, crtc_x_prop_.id_, crtc_rect.x()) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, crtc_y_prop_.id_, crtc_rect.y()) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, crtc_w_prop_.id_, crtc_rect.width()) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, crtc_h_prop_.id_, crtc_rect.height()) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, src_x_prop_.id_, src_rect.x()) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, src_y_prop_.id_, src_rect.x()) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, src_w_prop_.id_, src_rect.width()) ||
+      drmModePropertySetAdd(
+          property_set_, plane_id_, src_h_prop_.id_, src_rect.height());
+
+  if (plane_set_error) {
+    LOG(ERROR) << "Failed to set plane data";
+    return false;
+  }
+  return true;
+}
+
+bool HardwareDisplayPlane::Initialize() {
+  drmModeObjectPropertiesPtr plane_props = drmModeObjectGetProperties(

[dnicoara, 2014/07/11 15:24:04]

Could you please add the type to scoped_drm_types.h and use that instead. This
is defined in the current API, so shouldn't require any fancy #ifdefs.

[alexst (slow to review), 2014/07/11 20:19:43]

Good point, done.

+      drm_->get_fd(), plane_id_, DRM_MODE_OBJECT_PLANE);
+
+  if (!plane_props) {
+    LOG(ERROR) << "Unable to get plane properties.";
+    return false;
+  }
+
+  bool props_init =
+      crtc_prop_.Initialize(drm_, kCrtcPropName, plane_props) &&
+      fb_prop_.Initialize(drm_, kFbPropName, plane_props) &&
+      crtc_x_prop_.Initialize(drm_, kCrtcXPropName, plane_props) &&
+      crtc_y_prop_.Initialize(drm_, kCrtcYPropName, plane_props) &&
+      crtc_w_prop_.Initialize(drm_, kCrtcWPropName, plane_props) &&
+      crtc_h_prop_.Initialize(drm_, kCrtcHPropName, plane_props) &&
+      src_x_prop_.Initialize(drm_, kSrcXPropName, plane_props) &&
+      src_y_prop_.Initialize(drm_, kSrcYPropName, plane_props) &&
+      src_w_prop_.Initialize(drm_, kSrcWPropName, plane_props) &&
+      src_h_prop_.Initialize(drm_, kSrcHPropName, plane_props);
+
+  if (!props_init) {
+    LOG(ERROR) << "Unable to get plane properties.";
+    return false;
+  }
+  return true;
+}
+
+}  // namespace ui