From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 16:29:10 +0200 Subject: Adding upstream version 86.0.1. Signed-off-by: Daniel Baumann --- gfx/2d/Scale.cpp | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 gfx/2d/Scale.cpp (limited to 'gfx/2d/Scale.cpp') diff --git a/gfx/2d/Scale.cpp b/gfx/2d/Scale.cpp new file mode 100644 index 0000000000..af26cd3776 --- /dev/null +++ b/gfx/2d/Scale.cpp @@ -0,0 +1,45 @@ +/* -*- 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/. */ + +#include "Scale.h" + +#ifdef USE_SKIA +# include "HelpersSkia.h" +# include "skia/src/core/SkBitmapScaler.h" +#endif + +namespace mozilla { +namespace gfx { + +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) { +#ifdef USE_SKIA + SkPixmap srcPixmap(MakeSkiaImageInfo(IntSize(srcWidth, srcHeight), format), + srcData, srcStride); + + // Rescaler is compatible with N32 only. Convert to N32 if needed. + SkBitmap tmpBitmap; + if (srcPixmap.colorType() != kN32_SkColorType) { + if (!tmpBitmap.tryAllocPixels( + SkImageInfo::MakeN32Premul(srcWidth, srcHeight)) || + !tmpBitmap.writePixels(srcPixmap) || + !tmpBitmap.peekPixels(&srcPixmap)) { + return false; + } + } + + SkPixmap dstPixmap(SkImageInfo::MakeN32Premul(dstWidth, dstHeight), dstData, + dstStride); + return SkBitmapScaler::Resize(dstPixmap, srcPixmap, + SkBitmapScaler::RESIZE_LANCZOS3); +#else + return false; +#endif +} + +} // namespace gfx +} // namespace mozilla -- cgit v1.2.3