gfx/2d/Scale.h
author Jason Orendorff <jorendorff@mozilla.com>
Fri, 25 Apr 2014 16:11:01 -0500
changeset 198840 e0741f7815ffce0ee1fc5344ec928223b34ae7ab
parent 114817 38277196c0991c92fea1a601199711154e15d918
child 284279 91d6e262b662a0b4e47358665e222d3927337af9
permissions -rw-r--r--
Bug 547140, part 2 - Remove flags argument from JS_GetPropertyDescriptor and friends. r=Waldo.

/* 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);

}
}

#endif /* MOZILLA_GFX_BLUR_H_ */