Reland of Bump up scaling limit for MediaCodec.

webrtc/video/vie_encoder_unittest.cc

 /*
  *  Copyright (c) 2016 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 <limits>
 #include <utility>
 
 #include "webrtc/base/logging.h"
 #include "webrtc/system_wrappers/include/metrics_default.h"
 #include "webrtc/test/encoder_settings.h"
 #include "webrtc/test/fake_encoder.h"
 #include "webrtc/test/frame_generator.h"
 #include "webrtc/test/gtest.h"
 #include "webrtc/video/send_statistics_proxy.h"
 #include "webrtc/video/vie_encoder.h"
 
+namespace {
+#if defined(WEBRTC_ANDROID)
+// TODO(kthelgason): Lower this limit when better testing
+// on MediaCodec and fallback implementations are in place.
+const int kMinPixelsPerFrame = 320 * 180;
+#else
+const int kMinPixelsPerFrame = 120 * 90;
+#endif
+}
+
 namespace webrtc {
 
 using DegredationPreference = VideoSendStream::DegradationPreference;
 using ScaleReason = ScalingObserverInterface::ScaleReason;
 
 namespace {
 const size_t kMaxPayloadLength = 1440;
 const int kTargetBitrateBps = 100000;
 const unsigned char kNumSlDummy = 0;
 
@@ skipping 981 matching lines @@
   // Expect nothing to change, still no scaling
   EXPECT_FALSE(new_video_source.sink_wants().max_pixel_count);
 
   vie_encoder_->Stop();
 }
 
 TEST_F(ViEEncoderTest, DoesNotScaleBelowSetLimit) {
   const int kTargetBitrateBps = 100000;
   int frame_width = 1280;
   int frame_height = 720;
-  // from vie_encoder.cc
-  const int kMinPixelsPerFrame = 120 * 90;
   vie_encoder_->OnBitrateUpdated(kTargetBitrateBps, 0, 0);
 
   for (size_t i = 1; i <= 10; i++) {
     video_source_.IncomingCapturedFrame(
         CreateFrame(i, frame_width, frame_height));
     sink_.WaitForEncodedFrame(i);
     // Trigger scale down
     vie_encoder_->TriggerQualityLow();
     EXPECT_GE(*video_source_.sink_wants().max_pixel_count, kMinPixelsPerFrame);
   }
@@ skipping 25 matching lines @@
   vie_encoder_->Stop();
 
   stats_proxy_.reset();
   EXPECT_EQ(1,
             metrics::NumSamples("WebRTC.Video.CpuLimitedResolutionInPercent"));
   EXPECT_EQ(
       1, metrics::NumEvents("WebRTC.Video.CpuLimitedResolutionInPercent", 50));
 }
 
 }  // namespace webrtc