Reland:Refactored pixel format resize operations in media/video/capture into a function called Vide…

media/video/capture/video_capture_device_unittest.cc

 // Copyright (c) 2012 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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/run_loop.h"
@@ skipping 251 matching lines @@
 
   VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(640, 480);
   capture_params.requested_format.frame_rate = 30;
   capture_params.requested_format.pixel_format = PIXEL_FORMAT_I420;
   device->AllocateAndStart(capture_params, client_.Pass());
   // Get captured video frames.
   WaitForCapturedFrame();
   EXPECT_EQ(last_format().frame_size.width(), 640);
   EXPECT_EQ(last_format().frame_size.height(), 480);
+  EXPECT_EQ(static_cast<size_t>(640 * 480 * 3 / 2),
+            last_format().ImageAllocationSize());
   device->StopAndDeAllocate();
 }
 
 TEST_F(VideoCaptureDeviceTest, Capture720p) {
   names_ = EnumerateDevices();
   if (!names_->size()) {
     DVLOG(1) << "No camera available. Exiting test.";
     return;
   }
 
   scoped_ptr<VideoCaptureDevice> device(
       video_capture_device_factory_->Create(names_->front()));
   ASSERT_TRUE(device);
 
   EXPECT_CALL(*client_, OnErr())
       .Times(0);
 
   VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(1280, 720);
   capture_params.requested_format.frame_rate = 30;
   capture_params.requested_format.pixel_format = PIXEL_FORMAT_I420;
   device->AllocateAndStart(capture_params, client_.Pass());
   // Get captured video frames.
   WaitForCapturedFrame();
+  EXPECT_EQ(last_format().frame_size.width(), 1280);
+  EXPECT_EQ(last_format().frame_size.height(), 720);
+  EXPECT_EQ(static_cast<size_t>(1280 * 720 * 3 / 2),
+            last_format().ImageAllocationSize());
   device->StopAndDeAllocate();
 }
 
 TEST_F(VideoCaptureDeviceTest, MAYBE_AllocateBadSize) {
   names_ = EnumerateDevices();
   if (!names_->size()) {
     DVLOG(1) << "No camera available. Exiting test.";
     return;
   }
   scoped_ptr<VideoCaptureDevice> device(
       video_capture_device_factory_->Create(names_->front()));
   ASSERT_TRUE(device);
 
   EXPECT_CALL(*client_, OnErr())
       .Times(0);
 
   VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(637, 472);
   capture_params.requested_format.frame_rate = 35;
   capture_params.requested_format.pixel_format = PIXEL_FORMAT_I420;
   device->AllocateAndStart(capture_params, client_.Pass());
   WaitForCapturedFrame();
   device->StopAndDeAllocate();
   EXPECT_EQ(last_format().frame_size.width(), 640);
   EXPECT_EQ(last_format().frame_size.height(), 480);
+  EXPECT_EQ(static_cast<size_t>(640 * 480 * 3 / 2),
+            last_format().ImageAllocationSize());
 }
 
 // Cause hangs on Windows Debug. http://crbug.com/417824
 #if defined(OS_WIN) && !defined(NDEBUG)
 #define MAYBE_ReAllocateCamera DISABLED_ReAllocateCamera
 #else
 #define MAYBE_ReAllocateCamera ReAllocateCamera
 #endif
 
 TEST_F(VideoCaptureDeviceTest, MAYBE_ReAllocateCamera) {
@@ skipping 84 matching lines @@
   VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(1280, 720);
   capture_params.requested_format.frame_rate = 30;
   capture_params.requested_format.pixel_format = PIXEL_FORMAT_MJPEG;
   device->AllocateAndStart(capture_params, client_.Pass());
   // Get captured video frames.
   WaitForCapturedFrame();
   // Verify we get MJPEG from the device. Not all devices can capture 1280x720
   // @ 30 fps, so we don't care about the exact resolution we get.
   EXPECT_EQ(last_format().pixel_format, PIXEL_FORMAT_MJPEG);
+  EXPECT_GE(static_cast<size_t>(1280 * 720),
+            last_format().ImageAllocationSize());
   device->StopAndDeAllocate();
 }
 
 TEST_F(VideoCaptureDeviceTest, GetDeviceSupportedFormats) {
   // Use PIXEL_FORMAT_MAX to iterate all device names for testing
   // GetDeviceSupportedFormats().
   scoped_ptr<VideoCaptureDevice::Name> name =
       GetFirstDeviceNameSupportingPixelFormat(PIXEL_FORMAT_MAX);
   // Verify no camera returned for PIXEL_FORMAT_MAX. Nothing else to test here
   // since we cannot forecast the hardware capabilities.
   ASSERT_FALSE(name);
 }
 
 };  // namespace media