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The Tor Browser
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i010_buffer.h (2634B)

      1 /*
      2 *  Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
      3 *
      4 *  Use of this source code is governed by a BSD-style license
      5 *  that can be found in the LICENSE file in the root of the source
      6 *  tree. An additional intellectual property rights grant can be found
      7 *  in the file PATENTS.  All contributing project authors may
      8 *  be found in the AUTHORS file in the root of the source tree.
      9 */
     10 
     11 #ifndef API_VIDEO_I010_BUFFER_H_
     12 #define API_VIDEO_I010_BUFFER_H_
     13 
     14 #include <stdint.h>
     15 
     16 #include <memory>
     17 
     18 #include "api/scoped_refptr.h"
     19 #include "api/video/video_frame_buffer.h"
     20 #include "api/video/video_rotation.h"
     21 #include "rtc_base/memory/aligned_malloc.h"
     22 
     23 namespace webrtc {
     24 
     25 // Plain I010 buffer in standard memory.
     26 class I010Buffer : public I010BufferInterface {
     27 public:
     28  // Create a new buffer.
     29  static scoped_refptr<I010Buffer> Create(int width, int height);
     30 
     31  // Create a new buffer and copy the pixel data.
     32  static scoped_refptr<I010Buffer> Copy(const I010BufferInterface& buffer);
     33 
     34  // Convert and put I420 buffer into a new buffer.
     35  static scoped_refptr<I010Buffer> Copy(const I420BufferInterface& buffer);
     36 
     37  // Return a rotated copy of `src`.
     38  static scoped_refptr<I010Buffer> Rotate(const I010BufferInterface& src,
     39                                          VideoRotation rotation);
     40 
     41  // VideoFrameBuffer implementation.
     42  scoped_refptr<I420BufferInterface> ToI420() override;
     43 
     44  // PlanarYuv16BBuffer implementation.
     45  int width() const override;
     46  int height() const override;
     47  const uint16_t* DataY() const override;
     48  const uint16_t* DataU() const override;
     49  const uint16_t* DataV() const override;
     50  int StrideY() const override;
     51  int StrideU() const override;
     52  int StrideV() const override;
     53 
     54  uint16_t* MutableDataY();
     55  uint16_t* MutableDataU();
     56  uint16_t* MutableDataV();
     57 
     58  // Scale the cropped area of `src` to the size of `this` buffer, and
     59  // write the result into `this`.
     60  void CropAndScaleFrom(const I010BufferInterface& src,
     61                        int offset_x,
     62                        int offset_y,
     63                        int crop_width,
     64                        int crop_height);
     65 
     66  // Scale all of `src` to the size of `this` buffer, with no cropping.
     67  void ScaleFrom(const I010BufferInterface& src);
     68 
     69 protected:
     70  I010Buffer(int width, int height, int stride_y, int stride_u, int stride_v);
     71  ~I010Buffer() override;
     72 
     73 private:
     74  const int width_;
     75  const int height_;
     76  const int stride_y_;
     77  const int stride_u_;
     78  const int stride_v_;
     79  const std::unique_ptr<uint16_t, AlignedFreeDeleter> data_;
     80 };
     81 
     82 }  // namespace webrtc
     83 
     84 #endif  // API_VIDEO_I010_BUFFER_H_