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37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_GFX_SCALE_H_
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#define MOZILLA_GFX_SCALE_H_
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#include "Types.h"
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namespace mozilla {
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namespace gfx {
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/**
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* Scale an image using a high-quality filter.
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*
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* Synchronously scales an image and writes the output to the destination in
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* 32-bit format. The destination must be pre-allocated by the caller.
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*
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* Returns true if scaling was successful, and false otherwise. Currently, this
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* function is implemented using Skia. If Skia is not enabled when building,
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* calling this function will always return false.
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*
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* IMPLEMTATION NOTES:
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* This API is not currently easily hardware acceleratable. A better API might
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* take a SourceSurface and return a SourceSurface; the Direct2D backend, for
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* example, could simply set a status bit on a copy of the image, and use
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* Direct2D's high-quality scaler at draw time.
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*/
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GFX2D_API bool Scale(uint8_t* srcData, int32_t srcWidth, int32_t srcHeight, int32_t srcStride,
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uint8_t* dstData, int32_t dstWidth, int32_t dstHeight, int32_t dstStride,
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SurfaceFormat format);
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}
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}
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#endif /* MOZILLA_GFX_BLUR_H_ */
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