mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-24 13:21:05 +00:00
47af38389f
These new methods do both swizzle/premultiply and a Y-flip operation. Differential Revision: https://phabricator.services.mozilla.com/D136503
113 lines
4.2 KiB
C++
113 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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_SWIZZLE_H_
|
|
#define MOZILLA_GFX_SWIZZLE_H_
|
|
|
|
#include "Point.h"
|
|
#include "Rect.h"
|
|
|
|
namespace mozilla {
|
|
namespace image {
|
|
struct Orientation;
|
|
}
|
|
|
|
namespace gfx {
|
|
|
|
/**
|
|
* Premultiplies source and writes it to destination. Source and destination may
|
|
* be the same to premultiply in-place. The source format must have an alpha
|
|
* channel.
|
|
*/
|
|
GFX2D_API bool PremultiplyData(const uint8_t* aSrc, int32_t aSrcStride,
|
|
SurfaceFormat aSrcFormat, uint8_t* aDst,
|
|
int32_t aDstStride, SurfaceFormat aDstFormat,
|
|
const IntSize& aSize);
|
|
|
|
/**
|
|
* Unpremultiplies source and writes it to destination. Source and destination
|
|
* may be the same to unpremultiply in-place. Both the source and destination
|
|
* formats must have an alpha channel.
|
|
*/
|
|
GFX2D_API bool UnpremultiplyData(const uint8_t* aSrc, int32_t aSrcStride,
|
|
SurfaceFormat aSrcFormat, uint8_t* aDst,
|
|
int32_t aDstStride, SurfaceFormat aDstFormat,
|
|
const IntSize& aSize);
|
|
|
|
/**
|
|
* Swizzles source and writes it to destination. Source and destination may be
|
|
* the same to swizzle in-place.
|
|
*/
|
|
GFX2D_API bool SwizzleData(const uint8_t* aSrc, int32_t aSrcStride,
|
|
SurfaceFormat aSrcFormat, uint8_t* aDst,
|
|
int32_t aDstStride, SurfaceFormat aDstFormat,
|
|
const IntSize& aSize);
|
|
|
|
/**
|
|
* Flips rows of source and swizzles it to destination. Source and destination
|
|
* may be the same to swizzle in-place; this will fail if it cannot allocate a
|
|
* temporary buffer.
|
|
*/
|
|
GFX2D_API bool SwizzleYFlipData(const uint8_t* aSrc, int32_t aSrcStride,
|
|
SurfaceFormat aSrcFormat, uint8_t* aDst,
|
|
int32_t aDstStride, SurfaceFormat aDstFormat,
|
|
const IntSize& aSize);
|
|
|
|
/**
|
|
* Flips rows of source and premultiplies/swizzles it to destination. Source and
|
|
* destination may be the same to premultiply/swizzle in-place; this will fail
|
|
* if it cannot allocate a temporary buffer.
|
|
*/
|
|
GFX2D_API bool PremultiplyYFlipData(const uint8_t* aSrc, int32_t aSrcStride,
|
|
SurfaceFormat aSrcFormat, uint8_t* aDst,
|
|
int32_t aDstStride,
|
|
SurfaceFormat aDstFormat,
|
|
const IntSize& aSize);
|
|
|
|
/**
|
|
* Swizzles source and writes it to destination. Source and destination may be
|
|
* the same to swizzle in-place.
|
|
*/
|
|
typedef void (*SwizzleRowFn)(const uint8_t* aSrc, uint8_t* aDst,
|
|
int32_t aLength);
|
|
|
|
/**
|
|
* Get a function pointer to perform premultiplication between two formats.
|
|
*/
|
|
GFX2D_API SwizzleRowFn PremultiplyRow(SurfaceFormat aSrcFormat,
|
|
SurfaceFormat aDstFormat);
|
|
|
|
/**
|
|
* Get a function pointer to perform unpremultiplication between two formats.
|
|
*/
|
|
GFX2D_API SwizzleRowFn UnpremultiplyRow(SurfaceFormat aSrcFormat,
|
|
SurfaceFormat aDstFormat);
|
|
|
|
/**
|
|
* Get a function pointer to perform swizzling between two formats.
|
|
*/
|
|
GFX2D_API SwizzleRowFn SwizzleRow(SurfaceFormat aSrcFormat,
|
|
SurfaceFormat aDstFormat);
|
|
|
|
/**
|
|
* Reorients source and writes it to destination. Returns the dirty rect of
|
|
* what was changed in aDst.
|
|
*/
|
|
typedef IntRect (*ReorientRowFn)(const uint8_t* aSrc, int32_t aSrcRow,
|
|
uint8_t* aDst, const IntSize& aDstSize,
|
|
int32_t aDstStride);
|
|
|
|
/**
|
|
* Get a function pointer to perform reorientation by row.
|
|
*/
|
|
GFX2D_API ReorientRowFn
|
|
ReorientRow(const struct image::Orientation& aOrientation);
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|
|
|
|
#endif /* MOZILLA_GFX_SWIZZLE_H_ */
|