content/renderer/pepper/pepper_video_destination_host.h

   1 // Copyright (c) 2013 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 #ifndef CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DESTINATION_HOST_H_
   6 #define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DESTINATION_HOST_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/weak_ptr.h"
  11 #include "content/common/content_export.h"
  12 #include "content/renderer/media/webrtc/video_destination_handler.h"
  13 #include "ppapi/c/pp_time.h"
  14 #include "ppapi/host/resource_host.h"
  15
  16 namespace content {
  17
  18 class RendererPpapiHost;
  19
  20 class CONTENT_EXPORT PepperVideoDestinationHost
  21     : public ppapi::host::ResourceHost {
  22  public:
  23   PepperVideoDestinationHost(RendererPpapiHost* host,
  24                              PP_Instance instance,
  25                              PP_Resource resource);
  26
  27   ~PepperVideoDestinationHost() override;
  28
  29   int32_t OnResourceMessageReceived(
  30       const IPC::Message& msg,
  31       ppapi::host::HostMessageContext* context) override;
  32
  33  private:
  34   int32_t OnHostMsgOpen(ppapi::host::HostMessageContext* context,
  35                         const std::string& stream_url);
  36   int32_t OnHostMsgPutFrame(ppapi::host::HostMessageContext* context,
  37                             const ppapi::HostResource& image_data_resource,
  38                             PP_TimeTicks timestamp);
  39   int32_t OnHostMsgClose(ppapi::host::HostMessageContext* context);
  40
  41   scoped_ptr<FrameWriterInterface> frame_writer_;
  42   // Used for checking that timestamps are strictly increasing.
  43 #if DCHECK_IS_ON()
  44   bool has_received_frame_;
  45   int64_t previous_timestamp_ns_;
  46 #endif
  47
  48   base::WeakPtrFactory<PepperVideoDestinationHost> weak_factory_;
  49
  50   DISALLOW_COPY_AND_ASSIGN(PepperVideoDestinationHost);
  51 };
  52
  53 }  // namespace content
  54
  55 #endif  // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_DESTINATION_HOST_H_