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/* -*- 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_SCALE_H_
#define MOZILLA_GFX_SCALE_H_
#include "Types.h"
namespace mozilla {
namespace gfx {
/**
* Scale an image using a high-quality filter.
*
* Synchronously scales an image and writes the output to the destination in
* 32-bit format. The destination must be pre-allocated by the caller.
*
* Returns true if scaling was successful, and false otherwise. Currently, this
* function is implemented using Skia. If Skia is not enabled when building,
* calling this function will always return false.
*
* IMPLEMTATION NOTES:
* This API is not currently easily hardware acceleratable. A better API might
* take a SourceSurface and return a SourceSurface; the Direct2D backend, for
* example, could simply set a status bit on a copy of the image, and use
* Direct2D's high-quality scaler at draw time.
*/
GFX2D_API bool Scale(uint8_t* srcData, int32_t srcWidth, int32_t srcHeight,
int32_t srcStride, uint8_t* dstData, int32_t dstWidth,
int32_t dstHeight, int32_t dstStride, SurfaceFormat format,
SamplingFilter aFilter = SamplingFilter::GOOD);
} // namespace gfx
} // namespace mozilla
#endif /* MOZILLA_GFX_BLUR_H_ */
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