Load and apply a vcgt table from an ICC file to the internal display

ui/display/chromeos/test/action_logger_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/display/chromeos/test/action_logger_util.h"
 
 #include "base/format_macros.h"
+#include "base/logging.h"
 #include "base/strings/stringprintf.h"
 #include "ui/display/types/display_mode.h"
 #include "ui/display/types/display_snapshot.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/gfx/geometry/size.h"
 
 namespace ui {
 namespace test {
 
 std::string DisplaySnapshotToString(const DisplaySnapshot& output) {
@@ skipping 27 matching lines @@
       size.height(), out1 ? DisplaySnapshotToString(*out1).c_str() : "NULL",
       out2 ? DisplaySnapshotToString(*out2).c_str() : "NULL");
 }
 
 std::string GetSetHDCPStateAction(const DisplaySnapshot& output,
                                   HDCPState state) {
   return base::StringPrintf("set_hdcp(id=%" PRId64 ",state=%d)",
                             output.display_id(), state);
 }
 
+std::string SetGammaRampAction(const ui::DisplaySnapshot& output,
+                               const std::vector<uint16_t>& r,
+                               const std::vector<uint16_t>& g,
+                               const std::vector<uint16_t>& b) {
+  DCHECK_EQ(r.size(), g.size());
+  DCHECK_EQ(g.size(), b.size());
+
+  std::string table;
+  for (size_t i = 0; i < r.size(); ++i) {
+    table += base::StringPrintf(",rgb[%" PRIuS "]=%04x%04x%04x", i, r[i], g[i],
+                                b[i]);
+  }
+
+  return base::StringPrintf("set_gamma_ramp(id=%" PRId64 "%s)",
+                            output.display_id(), table.c_str());
+}
+
 std::string JoinActions(const char* action, ...) {
   std::string actions;
 
   va_list arg_list;
   va_start(arg_list, action);
   while (action) {
     if (!actions.empty())
       actions += ",";
     actions += action;
     action = va_arg(arg_list, const char*);
   }
   va_end(arg_list);
   return actions;
 }
 
 }  // namespace test
 }  // namespace ui