mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
77 lines
2.7 KiB
C++
77 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef _MOZILLA_GFX_DATASURFACEHELPERS_H
|
|
#define _MOZILLA_GFX_DATASURFACEHELPERS_H
|
|
|
|
#include "2D.h"
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
|
|
void
|
|
ConvertBGRXToBGRA(uint8_t* aData, const IntSize &aSize, int32_t aStride);
|
|
|
|
/**
|
|
* Copy the pixel data from aSrc and pack it into aDst. aSrcSize, aSrcStride
|
|
* and aBytesPerPixel give the size, stride and bytes per pixel for aSrc's
|
|
* surface. Callers are responsible for making sure that aDst is big enough to
|
|
* contain |aSrcSize.width * aSrcSize.height * aBytesPerPixel| bytes.
|
|
*/
|
|
void
|
|
CopySurfaceDataToPackedArray(uint8_t* aSrc, uint8_t* aDst, IntSize aSrcSize,
|
|
int32_t aSrcStride, int32_t aBytesPerPixel);
|
|
|
|
/**
|
|
* Convert aSurface to a packed buffer in BGRA format. The pixel data is
|
|
* returned in a buffer allocated with new uint8_t[]. The caller then has
|
|
* ownership of the buffer and is responsible for delete[]'ing it.
|
|
*/
|
|
uint8_t*
|
|
SurfaceToPackedBGRA(DataSourceSurface *aSurface);
|
|
|
|
/**
|
|
* Convert aSurface to a packed buffer in BGR format. The pixel data is
|
|
* returned in a buffer allocated with new uint8_t[]. The caller then has
|
|
* ownership of the buffer and is responsible for delete[]'ing it.
|
|
*
|
|
* This function is currently only intended for use with surfaces of format
|
|
* SurfaceFormat::B8G8R8X8 since the X components of the pixel data (if any)
|
|
* are simply dropped (no attempt is made to un-pre-multiply alpha from the
|
|
* color components).
|
|
*/
|
|
uint8_t*
|
|
SurfaceToPackedBGR(DataSourceSurface *aSurface);
|
|
|
|
/**
|
|
* Clears all the bytes in a DataSourceSurface's data array to zero (so to
|
|
* transparent black for SurfaceFormat::B8G8R8A8, for example).
|
|
* Note that DataSourceSurfaces can be initialized to zero, which is
|
|
* more efficient than zeroing the surface after initialization.
|
|
*/
|
|
void
|
|
ClearDataSourceSurface(DataSourceSurface *aSurface);
|
|
|
|
/**
|
|
* Multiplies aStride and aHeight and makes sure the result is limited to
|
|
* something sane. To keep things consistent, this should always be used
|
|
* wherever we allocate a buffer based on surface stride and height.
|
|
*
|
|
* @param aExtra Optional argument to specify an additional number of trailing
|
|
* bytes (useful for creating intermediate surfaces for filters, for
|
|
* example).
|
|
*
|
|
* @return The result of the multiplication if it is acceptable, or else zero.
|
|
*/
|
|
size_t
|
|
BufferSizeFromStrideAndHeight(int32_t aStride,
|
|
int32_t aHeight,
|
|
int32_t aExtraBytes = 0);
|
|
|
|
}
|
|
}
|
|
|
|
#endif // _MOZILLA_GFX_DATASURFACEHELPERS_H
|