gfx/2d/Scale.h
author Daniel Holbert <dholbert@cs.stanford.edu>
Fri, 27 Oct 2017 16:10:06 -0700
changeset 389027 5f74d262924171a8fa0b4483a64f4cac34c4c9b8
parent 252629 91d6e262b662a0b4e47358665e222d3927337af9
child 448947 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1412427 part 8: (automated patch) Switch a bunch of C++ files in gfx to use our standard mode lines. r=jrmuizel This patch was generated automatically by the "modeline.py" script, available here: https://github.com/amccreight/moz-source-tools/blob/master/modeline.py For every file that is modified in this patch, the changes are as follows: (1) The patch changes the file to use the exact C++ mode lines from the Mozilla coding style guide, available here: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style#Mode_Line (2) The patch deletes any blank lines between the mode line & the MPL boilerplate comment. (3) If the file previously had the mode lines and MPL boilerplate in a single contiguous C++ comment, then the patch splits them into separate C++ comments, to match the boilerplate in the coding style. MozReview-Commit-ID: 77D61xpSmIl

/* -*- 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);

} // namespace gfx
} // namespace mozilla

#endif /* MOZILLA_GFX_BLUR_H_ */