Add frame refresh to VideoCaptureDevice, and buffer pool resurrection.

content/browser/media/capture/desktop_capture_device_unittest.cc

 // Copyright (c) 2013 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 "content/browser/media/capture/desktop_capture_device.h"
 
 #include <stddef.h>
 #include <stdint.h>
 #include <string.h>
 #include <algorithm>
@@ skipping 61 matching lines @@
                     const uint8_t* v_data,
                     size_t y_stride,
                     size_t u_stride,
                     size_t v_stride,
                     const media::VideoCaptureFormat& frame_format,
                     int clockwise_rotation,
                     const base::TimeTicks& timestamp));
   MOCK_METHOD0(DoReserveOutputBuffer, void(void));
   MOCK_METHOD0(DoOnIncomingCapturedBuffer, void(void));
   MOCK_METHOD0(DoOnIncomingCapturedVideoFrame, void(void));
+  MOCK_METHOD0(DoResurrectLastOutputBuffer, void(void));
   MOCK_METHOD2(OnError,
                void(const tracked_objects::Location& from_here,
                     const std::string& reason));
 
   // Trampoline methods to workaround GMOCK problems with scoped_ptr<>.
   scoped_ptr<Buffer> ReserveOutputBuffer(
       const gfx::Size& dimensions,
       media::VideoPixelFormat format,
       media::VideoPixelStorage storage) override {
     EXPECT_TRUE(format == media::PIXEL_FORMAT_I420 &&
                 storage == media::PIXEL_STORAGE_CPU);
     DoReserveOutputBuffer();
     return scoped_ptr<Buffer>();
   }
   void OnIncomingCapturedBuffer(scoped_ptr<Buffer> buffer,
                                 const media::VideoCaptureFormat& frame_format,
                                 const base::TimeTicks& timestamp) override {
     DoOnIncomingCapturedBuffer();
   }
   void OnIncomingCapturedVideoFrame(
       scoped_ptr<Buffer> buffer,
       const scoped_refptr<media::VideoFrame>& frame,
       const base::TimeTicks& timestamp) override {
     DoOnIncomingCapturedVideoFrame();
   }
-
+  scoped_ptr<Buffer> ResurrectLastOutputBuffer(
+      const gfx::Size& dimensions,
+      media::VideoPixelFormat format,
+      media::VideoPixelStorage storage) override {
+    EXPECT_TRUE(format == media::PIXEL_FORMAT_I420 &&
+                storage == media::PIXEL_STORAGE_CPU);
+    DoResurrectLastOutputBuffer();
+    return scoped_ptr<Buffer>();
+  }
   double GetBufferPoolUtilization() const override { return 0.0; }
 };
 
 // Creates a DesktopFrame that has the first pixel bytes set to
 // kFakePixelValueFirst, and the rest of the bytes set to kFakePixelValue, for
 // UnpackedFrame and InvertedFrame verification.
 webrtc::BasicDesktopFrame* CreateBasicFrame(const webrtc::DesktopSize& size) {
   webrtc::BasicDesktopFrame* frame = new webrtc::BasicDesktopFrame(size);
   DCHECK_EQ(frame->size().width() * webrtc::DesktopFrame::kBytesPerPixel,
             frame->stride());
@@ skipping 406 matching lines @@
             frame_size);
   for (int i = 0; i < output_frame_->size().height(); ++i) {
     EXPECT_EQ(0,
         memcmp(inverted_frame->data() + i * inverted_frame->stride(),
                output_frame_->data() + i * output_frame_->stride(),
                output_frame_->stride()));
   }
 }
 
 }  // namespace content