webkit/support/test_media_stream_client.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "webkit/support/test_media_stream_client.h"
   6
   7 #include "googleurl/src/gurl.h"
   8 #include "media/base/message_loop_factory.h"
   9 #include "media/base/pipeline.h"
  10 #include "media/filters/video_frame_generator.h"
  11
  12 #include "third_party/WebKit/Source/WebKit/chromium/public/WebMediaStreamRegistry.h"
  13 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebMediaStreamComponent.h"
  14 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebMediaStreamDescriptor.h"
  15 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebVector.h"
  16
  17 using namespace WebKit;
  18
  19 namespace {
  20
  21 static const int kVideoCaptureWidth = 352;
  22 static const int kVideoCaptureHeight = 288;
  23 static const int kVideoCaptureFrameDurationMs = 33;
  24
  25 bool IsMockMediaStreamWithVideo(const WebURL& url) {
  26   WebMediaStreamDescriptor descriptor(
  27       WebMediaStreamRegistry::lookupMediaStreamDescriptor(url));
  28   if (descriptor.isNull())
  29     return false;
  30   WebVector<WebMediaStreamComponent> videoSources;
  31   descriptor.videoSources(videoSources);
  32   return videoSources.size() > 0;
  33 }
  34
  35 }  // namespace
  36
  37 namespace webkit_support {
  38
  39 scoped_refptr<media::VideoDecoder> TestMediaStreamClient::GetVideoDecoder(
  40     const GURL& url, media::MessageLoopFactory* message_loop_factory) {
  41   // This class is installed in a chain of possible VideoDecoder creators
  42   // which are called in order until one returns an object.
  43   // Make sure we are dealing with a Mock MediaStream. If not, bail out.
  44   if (!IsMockMediaStreamWithVideo(url))
  45     return NULL;
  46
  47   return new media::VideoFrameGenerator(
  48       message_loop_factory->GetMessageLoop(media::MessageLoopFactory::kDecoder),
  49       gfx::Size(kVideoCaptureWidth, kVideoCaptureHeight),
  50       base::TimeDelta::FromMilliseconds(kVideoCaptureFrameDurationMs));
  51 }
  52
  53 }  // namespace webkit_support