1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/2d/Scale.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,36 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#ifndef MOZILLA_GFX_SCALE_H_
1.9 +#define MOZILLA_GFX_SCALE_H_
1.10 +
1.11 +#include "Types.h"
1.12 +
1.13 +namespace mozilla {
1.14 +namespace gfx {
1.15 +
1.16 +/**
1.17 + * Scale an image using a high-quality filter.
1.18 + *
1.19 + * Synchronously scales an image and writes the output to the destination in
1.20 + * 32-bit format. The destination must be pre-allocated by the caller.
1.21 + *
1.22 + * Returns true if scaling was successful, and false otherwise. Currently, this
1.23 + * function is implemented using Skia. If Skia is not enabled when building,
1.24 + * calling this function will always return false.
1.25 + *
1.26 + * IMPLEMTATION NOTES:
1.27 + * This API is not currently easily hardware acceleratable. A better API might
1.28 + * take a SourceSurface and return a SourceSurface; the Direct2D backend, for
1.29 + * example, could simply set a status bit on a copy of the image, and use
1.30 + * Direct2D's high-quality scaler at draw time.
1.31 + */
1.32 +GFX2D_API bool Scale(uint8_t* srcData, int32_t srcWidth, int32_t srcHeight, int32_t srcStride,
1.33 + uint8_t* dstData, int32_t dstWidth, int32_t dstHeight, int32_t dstStride,
1.34 + SurfaceFormat format);
1.35 +
1.36 +}
1.37 +}
1.38 +
1.39 +#endif /* MOZILLA_GFX_BLUR_H_ */
