Revert of VideoCapture: add support for GpuMemoryBuffer allocation and lifetime mgmt in VideoCaptureBufferPool

content/browser/renderer_host/media/video_capture_texture_wrapper.h

+// Copyright 2015 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_TEXTURE_WRAPPER_H_
+#define CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_TEXTURE_WRAPPER_H_
+
+#include "base/memory/linked_ptr.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/single_thread_task_runner.h"
+#include "content/browser/renderer_host/media/video_capture_device_client.h"
+#include "content/common/content_export.h"
+#include "media/video/capture/video_capture_device.h"
+
+namespace content {
+
+// VideoCaptureDeviceClient derived class for copying incoming memory-backed
+// video data into a GpuMemoryBuffer (in turn into a VideoFrame), and sending it
+// to |controller_|. Construction happens on IO Thread, whereas calls to
+// OnIncomingCapturedData() come from wherever capture happens which might be,
+// and often is, an OS thread different from Device Thread.
+//
+// It has an internal ref counted TextureWrapperDelegate class used to do all
+// the work. This class creates and manages the necessary interactions with the
+// GPU process for the texture uploading. This delegate is needed since the
+// frame producer needs to own us, but we need to launch PostTask()s.
+//
+// TODO(mcasas): ctor |frame_format| is used for early GpuMemoryBuffer pool
+// allocation, but VideoCaptureDevices might provide a different resolution when
+// calling OnIncomingCapturedData(). What should we do then...?
+
+class CONTENT_EXPORT VideoCaptureTextureWrapper final
+    : public VideoCaptureDeviceClient {
+ public:
+  VideoCaptureTextureWrapper(
+      const base::WeakPtr<VideoCaptureController>& controller,
+      const scoped_refptr<VideoCaptureBufferPool>& buffer_pool,
+      const scoped_refptr<base::SingleThreadTaskRunner>& capture_task_runner,
+      const media::VideoCaptureFormat& capture_format);
+  ~VideoCaptureTextureWrapper() override;
+
+  // Single media::VideoCaptureDevice::Client overriden method.
+  void OnIncomingCapturedData(const uint8* data,
+                              int length,
+                              const media::VideoCaptureFormat& frame_format,
+                              int clockwise_rotation,
+                              const base::TimeTicks& timestamp) override;
+
+ private:
+  class TextureWrapperDelegate;
+  // Internal delegate doing most of the work.
+  scoped_refptr<TextureWrapperDelegate> wrapper_delegate_;
+  // Reference to Capture Thread task runner.
+  const scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner_;
+
+  DISALLOW_COPY_AND_ASSIGN(VideoCaptureTextureWrapper);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_VIDEO_CAPTURE_TEXTURE_WRAPPER_H_