Add support for more advanced color correction

ui/ozone/platform/drm/common/drm_util.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/drm/common/drm_util.h"
 
 #include <drm_fourcc.h>
 #include <stdint.h>
 #include <stdlib.h>
 #include <sys/mman.h>
@@ skipping 138 matching lines @@
   return (GetNameForEnumValue(property.get(), connector->prop_values[index]) ==
           "Full aspect");
 }
 
 int ConnectorIndex(int device_index, int display_index) {
   DCHECK_LT(device_index, 16);
   DCHECK_LT(display_index, 16);
   return ((device_index << 4) + display_index) & 0xFF;
 }
 
+bool HasColorCorrectionMatrix(int fd, drmModeCrtc* crtc) {
+  ScopedDrmObjectPropertyPtr crtc_props(
+      drmModeObjectGetProperties(fd, crtc->crtc_id, DRM_MODE_OBJECT_CRTC));
+
+  for (uint32_t i = 0; i < crtc_props->count_props; ++i) {
+    ScopedDrmPropertyPtr property(drmModeGetProperty(fd, crtc_props->props[i]));
+    if (property && !strcmp(property->name, "CTM")) {
+      return true;
+    }
+  }
+  return false;
+}
+
 }  // namespace
 
 HardwareDisplayControllerInfo::HardwareDisplayControllerInfo(
     ScopedDrmConnectorPtr connector,
     ScopedDrmCrtcPtr crtc,
     size_t index)
     : connector_(connector.Pass()), crtc_(crtc.Pass()), index_(index) {}
 
 HardwareDisplayControllerInfo::~HardwareDisplayControllerInfo() {
 }
@@ skipping 50 matching lines @@
     const gfx::Point& origin) {
   DisplaySnapshot_Params params;
   int64 connector_index = ConnectorIndex(device_index, info->index());
   params.display_id = connector_index;
   params.origin = origin;
   params.physical_size =
       gfx::Size(info->connector()->mmWidth, info->connector()->mmHeight);
   params.type = GetDisplayType(info->connector());
   params.is_aspect_preserving_scaling =
       IsAspectPreserving(fd, info->connector());
+  params.has_color_correction_matrix =
+      HasColorCorrectionMatrix(fd, info->crtc());
 
   ScopedDrmPropertyBlobPtr edid_blob(
       GetDrmPropertyBlob(fd, info->connector(), "EDID"));
 
   if (edid_blob) {
     std::vector<uint8_t> edid(
         static_cast<uint8_t*>(edid_blob->data),
         static_cast<uint8_t*>(edid_blob->data) + edid_blob->length);
 
     GetDisplayIdFromEDID(edid, connector_index, &params.display_id,
@@ skipping 38 matching lines @@
       return DRM_FORMAT_ARGB8888;
     case gfx::BufferFormat::BGRX_8888:
       return DRM_FORMAT_XRGB8888;
     default:
       NOTREACHED();
       return 0;
   }
 }
 
 }  // namespace ui