Video Capture Pepper API

webkit/plugins/ppapi/ppb_video_capture_impl.h

+// Copyright (c) 2011 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 WEBKIT_PLUGINS_PPAPI_PPB_VIDEO_CAPTURE_IMPL_H_
+#define WEBKIT_PLUGINS_PPAPI_PPB_VIDEO_CAPTURE_IMPL_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_callback_factory.h"
+#include "base/memory/scoped_ptr.h"
+#include "media/video/capture/video_capture.h"
+#include "ppapi/c/dev/ppp_video_capture_dev.h"
+#include "ppapi/thunk/ppb_video_capture_api.h"
+#include "webkit/plugins/ppapi/plugin_delegate.h"
+#include "webkit/plugins/ppapi/ppb_buffer_impl.h"
+#include "webkit/plugins/ppapi/resource.h"
+
+struct PP_VideoCaptureDeviceInfo_Dev;
+struct PPB_VideoCapture_Dev;
+
+namespace webkit {
+namespace ppapi {
+
+class PluginInstance;
+
+class PPB_VideoCapture_Impl : public Resource,
+                              public ::ppapi::thunk::PPB_VideoCapture_API,
+                              public media::VideoCapture::EventHandler {
+ public:
+  explicit PPB_VideoCapture_Impl(PluginInstance* instance);
+  virtual ~PPB_VideoCapture_Impl();
+
+  bool Init();
+
+  // ResourceObjectBase overrides.
+  virtual PPB_VideoCapture_API* AsPPB_VideoCapture_API() OVERRIDE;
+
+  // PPB_VideoCapture implementation.
+  virtual int32_t StartCapture(
+      const PP_VideoCaptureDeviceInfo_Dev& requested_info,
+      uint32_t buffer_count) OVERRIDE;
+  virtual int32_t ReuseBuffer(uint32_t buffer) OVERRIDE;
+  virtual int32_t StopCapture() OVERRIDE;
+
+  // media::VideoCapture::EventHandler implementation.
+  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 OnBufferReady(
+      media::VideoCapture* capture,
+      scoped_refptr<media::VideoCapture::VideoFrameBuffer> buffer) OVERRIDE;
+  virtual void OnDeviceInfoReceived(
+      media::VideoCapture* capture,
+      const media::VideoCaptureParams& device_info) OVERRIDE;
+
+ private:
+  void ReleaseBuffers();
+  void SendStatus();
+
+  scoped_ptr<PluginDelegate::PlatformVideoCapture> platform_video_capture_;
+
+  size_t buffer_count_hint_;
+  struct BufferInfo {
+    BufferInfo();
+    ~BufferInfo();
+
+    bool in_use;
+    void* data;
+    scoped_refptr<PPB_Buffer_Impl> buffer;
+  };
+  std::vector<BufferInfo> buffers_;
+
+  const PPP_VideoCapture_Dev* ppp_videocapture_;
+  PP_VideoCaptureStatus_Dev status_;
+
+  DISALLOW_COPY_AND_ASSIGN(PPB_VideoCapture_Impl);
+};
+
+}  // namespace ppapi
+}  // namespace webkit
+
+#endif  // WEBKIT_PLUGINS_PPAPI_PPB_VIDEO_DECODER_IMPL_H_