Refactor video capture to new design

content/renderer/pepper/pepper_video_capture_host.h

+// 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.
+
+#ifndef CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_CAPTURE_HOST_H_
+#define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_CAPTURE_HOST_H_
+
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "content/public/renderer/renderer_ppapi_host.h"
+#include "media/video/capture/video_capture.h"
+#include "media/video/capture/video_capture_types.h"
+#include "ppapi/c/dev/ppp_video_capture_dev.h"
+#include "ppapi/host/host_message_context.h"
+#include "ppapi/host/resource_host.h"
+#include "ppapi/shared_impl/ppb_device_ref_shared.h"
+#include "webkit/plugins/ppapi/plugin_delegate.h"
+#include "webkit/plugins/ppapi/ppb_buffer_impl.h"
+
+namespace content {
+
+class PepperVideoCaptureHost
+  : public ppapi::host::ResourceHost,
+    public webkit::ppapi::PluginDelegate::PlatformVideoCaptureEventHandler,
+    public base::SupportsWeakPtr<PepperVideoCaptureHost> {
+ public:
+  PepperVideoCaptureHost(RendererPpapiHost* host,
+                         PP_Instance instance,
+                         PP_Resource resource);
+
+  virtual ~PepperVideoCaptureHost();
+
+  bool Init();
+
+  virtual int32_t OnResourceMessageReceived(
+      const IPC::Message& msg,
+      ppapi::host::HostMessageContext* context) OVERRIDE;
+
+  // PluginDelegate::PlatformVideoCaptureEventHandler
+  virtual void OnInitialized(media::VideoCapture* capture,
+                             bool succeeded) OVERRIDE;
+  virtual void OnStarted(media::VideoCapture* capture) OVERRIDE;
+  virtual void OnStopped(media::VideoCapture* capture) OVERRIDE;
+  virtual void OnPaused(media::VideoCapture* capture) OVERRIDE;
+  virtual void OnError(media::VideoCapture* capture, int error_code) OVERRIDE;
+  virtual void OnRemoved(media::VideoCapture* capture) OVERRIDE;
+  virtual void OnBufferReady(
+      media::VideoCapture* capture,
+      scoped_refptr<media::VideoCapture::VideoFrameBuffer> buffer) OVERRIDE;
+  virtual void OnDeviceInfoReceived(
+      media::VideoCapture* capture,
+      const media::VideoCaptureParams& device_info) OVERRIDE;
+
+ private:
+  webkit::ppapi::PluginInstance* GetPluginInstance() const;
+
+  int32_t OnEnumerateDevices(
+      ppapi::host::HostMessageContext* context);
+  int32_t OnOpen(ppapi::host::HostMessageContext* context,
+                 const std::string& device_id,
+                 const PP_VideoCaptureDeviceInfo_Dev& requested_info,
+                 uint32_t buffer_count);
+  int32_t OnStartCapture(ppapi::host::HostMessageContext* context);
+  int32_t OnReuseBuffer(ppapi::host::HostMessageContext* context,
+                        uint32_t buffer);
+  int32_t OnStopCapture(ppapi::host::HostMessageContext* context);
+  int32_t OnClose(ppapi::host::HostMessageContext* context);
+
+  int32_t StopCapture();
+  int32_t Close();
+  void ReleaseBuffers();
+  void SendStatus();
+
+  void SetRequestedInfo(const PP_VideoCaptureDeviceInfo_Dev& device_info,
+                        uint32_t buffer_count);
+
+  void DetachPlatformVideoCapture();
+
+  void EnumerateDevicesCallbackFunc(
+      int request_id,
+      bool succeeded,
+      const std::vector<ppapi::DeviceRefData>& devices);
+
+  bool SetStatus(PP_VideoCaptureStatus_Dev status, bool forced);
+
+  scoped_refptr<webkit::ppapi::PluginDelegate::PlatformVideoCapture>
+      platform_video_capture_;
+
+  // Buffers of video frame.
+  struct BufferInfo {
+    BufferInfo();
+    ~BufferInfo();
+
+    bool in_use;
+    void* data;
+    scoped_refptr<webkit::ppapi::PPB_Buffer_Impl> buffer;
+  };
+
+  RendererPpapiHost* renderer_ppapi_host_;
+
+  std::vector<BufferInfo> buffers_;
+  size_t buffer_count_hint_;
+
+  media::VideoCaptureCapability capability_;
+
+  PP_VideoCaptureStatus_Dev status_;
+
+  ppapi::host::ReplyMessageContext open_reply_context_;
+  ppapi::host::ReplyMessageContext enum_reply_context_;
+
+  DISALLOW_COPY_AND_ASSIGN(PepperVideoCaptureHost);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_CAPTURE_HOST_H_