chromecast/renderer/cast_render_process_observer.cc

   1 // Copyright 2014 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 "chromecast/renderer/cast_render_process_observer.h"
   6
   7 #include "chromecast/renderer/media/capabilities_message_filter.h"
   8 #include "chromecast/renderer/media/cma_message_filter_proxy.h"
   9 #include "content/public/renderer/render_thread.h"
  10
  11 namespace chromecast {
  12 namespace shell {
  13
  14 CastRenderProcessObserver::CastRenderProcessObserver() {
  15   content::RenderThread* thread = content::RenderThread::Get();
  16   thread->AddObserver(this);
  17   CreateCustomFilters();
  18 }
  19
  20 CastRenderProcessObserver::~CastRenderProcessObserver() {
  21   // CastRenderProcessObserver outlives content::RenderThread.
  22   // No need to explicitly call RemoveObserver in teardown.
  23 }
  24
  25 void CastRenderProcessObserver::CreateCustomFilters() {
  26   content::RenderThread* thread = content::RenderThread::Get();
  27 #if !defined(OS_ANDROID)
  28   cma_message_filter_proxy_ =
  29       new media::CmaMessageFilterProxy(thread->GetIOMessageLoopProxy());
  30   thread->AddFilter(cma_message_filter_proxy_.get());
  31 #endif  // !defined(OS_ANDROID)
  32   capabilities_message_filter_ = new CapabilitiesMessageFilter;
  33   thread->AddFilter(capabilities_message_filter_.get());
  34 }
  35
  36 void CastRenderProcessObserver::OnRenderProcessShutdown() {
  37   content::RenderThread* thread = content::RenderThread::Get();
  38 #if !defined(OS_ANDROID)
  39   if (cma_message_filter_proxy_.get()) {
  40     thread->RemoveFilter(cma_message_filter_proxy_.get());
  41     cma_message_filter_proxy_ = nullptr;
  42   }
  43 #endif  // !defined(OS_ANDROID)
  44   if (capabilities_message_filter_.get()) {
  45     thread->RemoveFilter(capabilities_message_filter_.get());
  46     capabilities_message_filter_ = nullptr;
  47   }
  48 }
  49
  50 }  // namespace shell
  51 }  // namespace chromecast