dom/media/ImageConversion.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-*/
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   4  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef ImageToI420Converter_h
   7 #define ImageToI420Converter_h
   8
   9 #include "mozilla/AlreadyAddRefed.h"
  10 #include "nsError.h"
  11 #include "mozilla/gfx/Point.h"
  12
  13 namespace mozilla {
  14
  15 namespace gfx {
  16 class SourceSurface;
  17 enum class SurfaceFormat : int8_t;
  18 }  // namespace gfx
  19
  20 namespace layers {
  21 class Image;
  22 }  // namespace layers
  23
  24 /**
  25  * Gets a SourceSurface from given image.
  26  */
  27 already_AddRefed<gfx::SourceSurface> GetSourceSurface(layers::Image* aImage);
  28
  29 /**
  30  * Converts aImage to an I420 image and writes it to the given buffers.
  31  */
  32 nsresult ConvertToI420(layers::Image* aImage, uint8_t* aDestY, int aDestStrideY,
  33                        uint8_t* aDestU, int aDestStrideU, uint8_t* aDestV,
  34                        int aDestStrideV);
  35
  36 /**
  37  * Converts aImage to an NV12 image and writes it to the given buffers.
  38  */
  39 nsresult ConvertToNV12(layers::Image* aImage, uint8_t* aDestY, int aDestStrideY,
  40                        uint8_t* aDestUV, int aDestStrideUV,
  41                        gfx::IntSize aDestSize);
  42
  43 /**
  44  * Converts aImage into an RGBA image in a specified format and writes it to the
  45  * given buffer.
  46  */
  47 nsresult ConvertToRGBA(layers::Image* aImage,
  48                        const gfx::SurfaceFormat& aDestFormat,
  49                        uint8_t* aDestBuffer, int aDestStride);
  50
  51 /*
  52  * Convert the RGBA image data from SRGB color into DisplayP3 color.
  53  * aSrcBuffer and aDestBuffer can be the same.
  54  */
  55 nsresult ConvertSRGBBufferToDisplayP3(uint8_t* aSrcBuffer,
  56                                       const gfx::SurfaceFormat& aSrcFormat,
  57                                       uint8_t* aDestBuffer, int aWidth,
  58                                       int aHeight);
  59
  60 }  // namespace mozilla
  61
  62 #endif /* ImageToI420Converter_h */