Cast: Use fixed bitrate and set it once for hardware encoder

media/cast/sender/external_video_encoder_unittest.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 <vector>
 
 #include "base/bind.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "media/base/video_frame.h"
@@ skipping 95 matching lines @@
     PopulateVideoFrame(video_frame_, 123);
 
     testing_clock_ = new base::SimpleTestTickClock();
     task_runner_ = new test::FakeSingleThreadTaskRunner(testing_clock_);
     cast_environment_ =
         new CastEnvironment(scoped_ptr<base::TickClock>(testing_clock_).Pass(),
                             task_runner_,
                             task_runner_,
                             task_runner_);
 
-    fake_vea_ = new test::FakeVideoEncodeAccelerator(task_runner_);
+    fake_vea_ = new test::FakeVideoEncodeAccelerator(task_runner_,
+                                                     &stored_bitrates_);
     scoped_ptr<VideoEncodeAccelerator> fake_vea(fake_vea_);
     video_encoder_.reset(
         new ExternalVideoEncoder(cast_environment_,
                                  video_config_,
                                  base::Bind(&CreateVideoEncodeAccelerator,
                                             task_runner_,
                                             base::Passed(&fake_vea)),
                                  base::Bind(&CreateSharedMemory)));
   }
 
   virtual ~ExternalVideoEncoderTest() {}
 
   base::SimpleTestTickClock* testing_clock_;  // Owned by CastEnvironment.
   test::FakeVideoEncodeAccelerator* fake_vea_;  // Owned by video_encoder_.
+  std::vector<uint32> stored_bitrates_;
   scoped_refptr<TestVideoEncoderCallback> test_video_encoder_callback_;
   VideoSenderConfig video_config_;
   scoped_refptr<test::FakeSingleThreadTaskRunner> task_runner_;
   scoped_ptr<VideoEncoder> video_encoder_;
   scoped_refptr<media::VideoFrame> video_frame_;
   scoped_refptr<CastEnvironment> cast_environment_;
 
   DISALLOW_COPY_AND_ASSIGN(ExternalVideoEncoderTest);
 };
 
 TEST_F(ExternalVideoEncoderTest, EncodePattern30fpsRunningOutOfAck) {
   task_runner_->RunTasks();  // Run the initializer on the correct thread.
 
   VideoEncoder::FrameEncodedCallback frame_encoded_callback =
       base::Bind(&TestVideoEncoderCallback::DeliverEncodedVideoFrame,
                  test_video_encoder_callback_.get());
 
   base::TimeTicks capture_time;
   capture_time += base::TimeDelta::FromMilliseconds(33);
   test_video_encoder_callback_->SetExpectedResult(0, 0, capture_time);
+  video_encoder_->SetBitRate(2000);
   EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
       video_frame_, capture_time, frame_encoded_callback));
   task_runner_->RunTasks();
 
   for (int i = 0; i < 6; ++i) {
     capture_time += base::TimeDelta::FromMilliseconds(33);
     test_video_encoder_callback_->SetExpectedResult(i + 1, i, capture_time);
     EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
         video_frame_, capture_time, frame_encoded_callback));
     task_runner_->RunTasks();
   }
   // We need to run the task to cleanup the GPU instance.
   video_encoder_.reset(NULL);
   task_runner_->RunTasks();
+
+  ASSERT_EQ(1u, stored_bitrates_.size());
+  EXPECT_EQ(2000u, stored_bitrates_[0]);
 }
 
 TEST_F(ExternalVideoEncoderTest, StreamHeader) {
   task_runner_->RunTasks();  // Run the initializer on the correct thread.
 
   VideoEncoder::FrameEncodedCallback frame_encoded_callback =
       base::Bind(&TestVideoEncoderCallback::DeliverEncodedVideoFrame,
                  test_video_encoder_callback_.get());
 
   // Force the FakeVideoEncodeAccelerator to return a dummy non-key frame first.
   fake_vea_->SendDummyFrameForTesting(false);
 
   // Verify the first returned bitstream buffer is still a key frame.
   base::TimeTicks capture_time;
   capture_time += base::TimeDelta::FromMilliseconds(33);
   test_video_encoder_callback_->SetExpectedResult(0, 0, capture_time);
   EXPECT_TRUE(video_encoder_->EncodeVideoFrame(
       video_frame_, capture_time, frame_encoded_callback));
   task_runner_->RunTasks();
 
   // We need to run the task to cleanup the GPU instance.
   video_encoder_.reset(NULL);
   task_runner_->RunTasks();
 }
 
 }  // namespace cast
 }  // namespace media