Add command-line param to screenshare_loopback to specify a list of slides

webrtc/video/video_quality_test.cc

 /*
  *  Copyright (c) 2015 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.
  */
 #include "webrtc/video/video_quality_test.h"
@@ skipping 1487 matching lines @@
           static_cast<unsigned char>(params_.video.num_temporal_layers);
       vp9_settings.numberOfSpatialLayers =
           static_cast<unsigned char>(params_.ss.num_spatial_layers);
       video_encoder_config_.encoder_specific_settings =
           new rtc::RefCountedObject<
               VideoEncoderConfig::Vp9EncoderSpecificSettings>(vp9_settings);
     }
     // Setup frame generator.
     const size_t kWidth = 1850;
     const size_t kHeight = 1110;
-    std::vector<std::string> slides;
-    slides.push_back(test::ResourcePath("web_screenshot_1850_1110", "yuv"));
-    slides.push_back(test::ResourcePath("presentation_1850_1110", "yuv"));
-    slides.push_back(test::ResourcePath("photo_1850_1110", "yuv"));
-    slides.push_back(test::ResourcePath("difficult_photo_1850_1110", "yuv"));
-
+    std::vector<std::string> slides = params_.screenshare.slides;
+    if (slides.size() == 0) {
+      slides.push_back(test::ResourcePath("web_screenshot_1850_1110", "yuv"));
+      slides.push_back(test::ResourcePath("presentation_1850_1110", "yuv"));
+      slides.push_back(test::ResourcePath("photo_1850_1110", "yuv"));
+      slides.push_back(test::ResourcePath("difficult_photo_1850_1110", "yuv"));
+    }
     if (params_.screenshare.scroll_duration == 0) {
       // Cycle image every slide_change_interval seconds.
       frame_generator_ = test::FrameGenerator::CreateFromYuvFile(
           slides, kWidth, kHeight,
           params_.screenshare.slide_change_interval * params_.video.fps);
     } else {
       RTC_CHECK_LE(params_.video.width, kWidth);
       RTC_CHECK_LE(params_.video.height, kHeight);
       RTC_CHECK_GT(params_.screenshare.slide_change_interval, 0);
       const int kPauseDurationMs = (params_.screenshare.slide_change_interval -
@@ skipping 377 matching lines @@
   if (!params_.video.encoded_frame_base_path.empty()) {
     std::ostringstream str;
     str << receive_logs_++;
     std::string path =
         params_.video.encoded_frame_base_path + "." + str.str() + ".recv.ivf";
     stream->EnableEncodedFrameRecording(rtc::CreatePlatformFile(path),
                                         10000000);
   }
 }
 }  // namespace webrtc