From Video Capture, abolish OnFrameInfo and enable resolution changes

content/browser/renderer_host/media/video_capture_controller_event_handler.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_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_EVENT_HANDLER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_EVENT_HANDLER_H_
 
 #include "base/memory/shared_memory.h"
 #include "base/time/time.h"
 #include "content/common/content_export.h"
-
-namespace media {
-class VideoCaptureCapability;
-}
+#include "media/video/capture/video_capture_types.h"
 
 namespace content {
 
 // ID used for identifying an object of VideoCaptureController.
 struct CONTENT_EXPORT VideoCaptureControllerID {
   explicit VideoCaptureControllerID(int device_id);
 
   bool operator<(const VideoCaptureControllerID& vc) const;
   bool operator==(const VideoCaptureControllerID& vc) const;
 
   int device_id;
 };
 
 // VideoCaptureControllerEventHandler is the interface for
 // VideoCaptureController to notify clients about the events such as
 // BufferReady, FrameInfo, Error, etc.
 class CONTENT_EXPORT VideoCaptureControllerEventHandler {
  public:
   // An Error has occurred in the VideoCaptureDevice.
   virtual void OnError(const VideoCaptureControllerID& id) = 0;
 
   // A buffer has been newly created.
   virtual void OnBufferCreated(const VideoCaptureControllerID& id,
                                base::SharedMemoryHandle handle,
-                               int length, int buffer_id) = 0;
+                               int length,
+                               int buffer_id) = 0;
+
+  // A previously created buffer has been freed and will no longer be used.
+  virtual void OnBufferDestroyed(const VideoCaptureControllerID& id,
+                                 int buffer_id) = 0;
 
   // A buffer has been filled with I420 video.
-  virtual void OnBufferReady(const VideoCaptureControllerID& id,
-                             int buffer_id,
-                             base::Time timestamp) = 0;
-
-  // The frame resolution the VideoCaptureDevice capture video in.
-  virtual void OnFrameInfo(const VideoCaptureControllerID& id,
-                           const media::VideoCaptureCapability& format) = 0;
-
-  // The frame resolution the VideoCaptureDevice capture video in.
-  virtual void OnFrameInfoChanged(const VideoCaptureControllerID& id,
-                                  int width,
-                                  int height,
-                                  int frame_rate) {};
+  virtual void OnBufferReady(
+      const VideoCaptureControllerID& id,
+      int buffer_id,
+      base::Time timestamp,
+      const media::VideoCaptureFormat& format) = 0;
 
   // The capture session has ended and no more frames will be sent.
   virtual void OnEnded(const VideoCaptureControllerID& id) = 0;
 
  protected:
   virtual ~VideoCaptureControllerEventHandler() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_CONTROLLER_EVENT_HANDLER_H_