Added video capture capabilities retrieval and caching to VideoCaptureManager

media/video/capture/fake_video_capture_device.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 "media/video/capture/fake_video_capture_device.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 19 matching lines @@
   for (int n = 0; n < kNumberOfFakeDevices; n++) {
     Name name(base::StringPrintf("fake_device_%d", n),
               base::StringPrintf("/dev/video%d", n));
     device_names->push_back(name);
   }
 }
 
 void FakeVideoCaptureDevice::GetDeviceSupportedFormats(
     const Name& device,
     VideoCaptureCapabilities* formats) {
-  VideoCaptureCapability capture_format;
-  capture_format.color = media::PIXEL_FORMAT_I420;
-  capture_format.width = 640;
-  capture_format.height = 480;
-  capture_format.frame_rate = 1000 / kFakeCaptureTimeoutMs;
-  formats->push_back(capture_format);
+  formats->clear();
+  VideoCaptureCapability capture_format_640x480;
+  capture_format_640x480.color = media::PIXEL_FORMAT_I420;
+  capture_format_640x480.width = 640;
+  capture_format_640x480.height = 480;
+  capture_format_640x480.frame_rate = 1000 / kFakeCaptureTimeoutMs;
+  formats->push_back(capture_format_640x480);
+  VideoCaptureCapability capture_format_320x240;
+  capture_format_320x240.color = media::PIXEL_FORMAT_I420;
+  capture_format_320x240.width = 320;
+  capture_format_320x240.height = 240;
+  capture_format_320x240.frame_rate = 1000 / kFakeCaptureTimeoutMs;
+  formats->push_back(capture_format_320x240);
 }
 
 VideoCaptureDevice* FakeVideoCaptureDevice::Create(const Name& device_name) {
   if (fail_next_create_) {
     fail_next_create_ = false;
     return NULL;
   }
   for (int n = 0; n < kNumberOfFakeDevices; ++n) {
     std::string possible_id = base::StringPrintf("/dev/video%d", n);
     if (device_name.id().compare(possible_id) == 0) {
@@ skipping 175 matching lines @@
       media::VideoCaptureCapability(800,
                                     600,
                                     30,
                                     PIXEL_FORMAT_I420,
                                     VariableResolutionVideoCaptureDevice));
 
   capabilities_roster_index_ = 0;
 }
 
 }  // namespace media