BlankDetectorDesktopCapturerWrapper to detect a blank DesktopFrame

webrtc/modules/desktop_capture/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("//build/config/ui.gni")
 import("../../webrtc.gni")
@@ skipping 26 matching lines @@
     testonly = true
     sources = []
     deps = []
     if (rtc_desktop_capture_supported) {
       deps += [
         ":desktop_capture_mock",
         ":primitives",
         ":screen_drawer",
         "../../base:rtc_base",
         "../../base:rtc_base_approved",
-        "../../system_wrappers:system_wrappers",
+        "../../system_wrappers",
         "../../test:test_support",
         "../../test:video_test_support",
       ]
       sources += [
         "screen_capturer_integration_test.cc",
         "screen_drawer_unittest.cc",
       ]
     }
   }
 
   rtc_source_set("desktop_capture_unittests") {
     testonly = true
     sources = [
+      "blank_detector_desktop_capturer_wrapper_unittest.cc",
       "desktop_and_cursor_composer_unittest.cc",
       "desktop_capturer_differ_wrapper_unittest.cc",
       "desktop_frame_rotation_unittest.cc",
       "desktop_region_unittest.cc",
       "differ_block_unittest.cc",
       "fallback_desktop_capturer_wrapper_unittest.cc",
       "mouse_cursor_monitor_unittest.cc",
       "rgba_color_unittest.cc",
       "test_utils.cc",
       "test_utils.h",
       "test_utils_unittest.cc",
       "win/cursor_unittest.cc",
       "win/cursor_unittest_resources.h",
       "win/cursor_unittest_resources.rc",
     ]
     deps = [
       ":desktop_capture",
       ":desktop_capture_mock",
       ":primitives",
-      ":rgba_color",
       "../..:webrtc_common",
       "../../base:rtc_base_approved",
-      "../../system_wrappers:system_wrappers",
+      "../../system_wrappers",
       "../../test:test_support",
       "//testing/gmock",
     ]
     if (rtc_desktop_capture_supported) {
       sources += [
         "screen_capturer_helper_unittest.cc",
         "screen_capturer_mac_unittest.cc",
         "screen_capturer_unittest.cc",
         "window_capturer_unittest.cc",
       ]
       deps += [ ":desktop_capture_mock" ]
     }
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
   }
 
-  source_set("rgba_color") {
+  source_set("screen_drawer") {
     testonly = true
 
     public_deps = [
       ":desktop_capture",
     ]
 
     sources = [
-      "rgba_color.cc",
-      "rgba_color.h",
-    ]
-
-    deps = [
-      ":primitives",
-      "../..:webrtc_common",
-    ]
-  }
-
-  source_set("screen_drawer") {
-    testonly = true
-
-    public_deps = [
-      ":rgba_color",
-    ]
-
-    sources = [
       "screen_drawer.cc",
       "screen_drawer.h",
       "screen_drawer_linux.cc",
       "screen_drawer_mac.cc",
       "screen_drawer_win.cc",
     ]
 
     deps = [
       ":primitives",
       "../../base:rtc_base_approved",
       "../../system_wrappers",
     ]
   }
 
   source_set("desktop_capture_mock") {
     testonly = true
 
     public_deps = [
       ":desktop_capture",
-      ":rgba_color",
       "//testing/gmock",
     ]
 
     sources = [
       "desktop_frame_generator.cc",
       "desktop_frame_generator.h",
       "fake_desktop_capturer.cc",
       "fake_desktop_capturer.h",
       "mock_desktop_capturer_callback.cc",
       "mock_desktop_capturer_callback.h",
     ]
 
     deps = [
       ":primitives",
       "../../base:rtc_base_approved",
       "../../test:test_support",
     ]
   }
 }
 
 rtc_static_library("desktop_capture") {
   sources = [
+    "blank_detector_desktop_capturer_wrapper.cc",
+    "blank_detector_desktop_capturer_wrapper.h",
     "cropped_desktop_frame.cc",
     "cropped_desktop_frame.h",
     "cropping_window_capturer.cc",
     "cropping_window_capturer.h",
     "cropping_window_capturer_win.cc",
     "desktop_and_cursor_composer.cc",
     "desktop_and_cursor_composer.h",
     "desktop_capture_options.cc",
     "desktop_capture_options.h",
     "desktop_capturer.cc",
@@ skipping 18 matching lines @@
     "mac/scoped_pixel_buffer_object.h",
     "mac/window_list_utils.cc",
     "mac/window_list_utils.h",
     "mouse_cursor.cc",
     "mouse_cursor.h",
     "mouse_cursor_monitor.h",
     "mouse_cursor_monitor_mac.mm",
     "mouse_cursor_monitor_win.cc",
     "resolution_change_detector.cc",
     "resolution_change_detector.h",
+    "rgba_color.cc",
+    "rgba_color.h",
     "screen_capture_frame_queue.h",
     "screen_capturer_helper.cc",
     "screen_capturer_helper.h",
     "screen_capturer_mac.mm",
     "screen_capturer_win.cc",
     "win/cursor.cc",
     "win/cursor.h",
     "win/d3d_device.cc",
     "win/d3d_device.h",
     "win/desktop.cc",
@@ skipping 86 matching lines @@
     sources = [
       "differ_vector_sse2.cc",
       "differ_vector_sse2.h",
     ]
 
     if (is_posix) {
       cflags = [ "-msse2" ]
     }
   }
 }