Add allocator interface for use by cdm_adapter

media/cdm/cdm_video_frame.h

-// Copyright 2015 The Chromium Authors. All rights reserved.
+// Copyright 2016 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 MEDIA_CDM_CDM_HELPERS_H_
-#define MEDIA_CDM_CDM_HELPERS_H_
+#ifndef MEDIA_CDM_CDM_VIDEO_FRAME_H_
+#define MEDIA_CDM_CDM_VIDEO_FRAME_H_
 
 #include <stdint.h>
 
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
 #include "media/cdm/api/content_decryption_module.h"
+#include "ui/gfx/geometry/size.h"
 
 namespace media {
 
-class DecryptedBlockImpl : public cdm::DecryptedBlock {
+class VideoFrame;
+
+class CdmVideoFrame : public cdm::VideoFrame {
  public:
-  DecryptedBlockImpl();
-  ~DecryptedBlockImpl() final;
-
-  // cdm::DecryptedBlock implementation.
-  void SetDecryptedBuffer(cdm::Buffer* buffer) final;
-  cdm::Buffer* DecryptedBuffer() final;
-  void SetTimestamp(int64_t timestamp) final;
-  int64_t Timestamp() const final;
-
- private:
-  cdm::Buffer* buffer_;
-  int64_t timestamp_;
-
-  DISALLOW_COPY_AND_ASSIGN(DecryptedBlockImpl);
-};
-
-class VideoFrameImpl : public cdm::VideoFrame {
- public:
-  VideoFrameImpl();
-  ~VideoFrameImpl() final;
+  CdmVideoFrame();
+  ~CdmVideoFrame() override;
 
   // cdm::VideoFrame implementation.
   void SetFormat(cdm::VideoFormat format) final;
   cdm::VideoFormat Format() const final;
   void SetSize(cdm::Size size) final;
   cdm::Size Size() const final;
   void SetFrameBuffer(cdm::Buffer* frame_buffer) final;
   cdm::Buffer* FrameBuffer() final;
   void SetPlaneOffset(cdm::VideoFrame::VideoPlane plane, uint32_t offset) final;
   uint32_t PlaneOffset(VideoPlane plane) final;
   void SetStride(VideoPlane plane, uint32_t stride) final;
   uint32_t Stride(VideoPlane plane) final;
   void SetTimestamp(int64_t timestamp) final;
   int64_t Timestamp() const final;
 
- private:
+  // Create a media::VideoFrame based on the data contained in this object.
+  virtual scoped_refptr<media::VideoFrame> CreateVideoFrame(
+      gfx::Size natural_size) = 0;

[xhwang, 2016/02/11 19:24:14]

After this call, what's the state of |this|? Can we call this again?

[jrummell, 2016/02/11 22:08:16]

Updated comment. FrameBuffer is transferred to become owned by the created
VideoFrame.

+
+ protected:
   // The video buffer format.
   cdm::VideoFormat format_;
 
   // Width and height of the video frame.
   cdm::Size size_;
 
   // The video frame buffer.
   cdm::Buffer* frame_buffer_;
 
   // Array of data pointers to each plane in the video frame buffer.
   uint32_t plane_offsets_[kMaxPlanes];
 
   // Array of strides for each plane, typically greater or equal to the width
   // of the surface divided by the horizontal sampling period.  Note that
   // strides can be negative.
   uint32_t strides_[kMaxPlanes];
 
   // Presentation timestamp in microseconds.
   int64_t timestamp_;
 
-  DISALLOW_COPY_AND_ASSIGN(VideoFrameImpl);
-};
-
-class AudioFramesImpl : public cdm::AudioFrames {
- public:
-  AudioFramesImpl();
-  ~AudioFramesImpl() final;
-
-  // cdm::AudioFrames implementation.
-  void SetFrameBuffer(cdm::Buffer* buffer) final;
-  cdm::Buffer* FrameBuffer() final;
-  void SetFormat(cdm::AudioFormat format) final;
-  cdm::AudioFormat Format() const final;
-
-  cdm::Buffer* PassFrameBuffer();
-
  private:
-  cdm::Buffer* buffer_;
-  cdm::AudioFormat format_;
-
-  DISALLOW_COPY_AND_ASSIGN(AudioFramesImpl);
+  DISALLOW_COPY_AND_ASSIGN(CdmVideoFrame);
 };
 
 }  // namespace media
 
-#endif  // MEDIA_CDM_CDM_HELPERS_H_
+#endif  // MEDIA_CDM_CDM_VIDEO_FRAME_H_