1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/core/SkConfig8888.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,79 @@
1.4 +/*
1.5 + * Copyright 2011 Google Inc.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license that can be
1.8 + * found in the LICENSE file.
1.9 + */
1.10 +
1.11 +#ifndef SkConfig8888_DEFINED
1.12 +#define SkConfig8888_DEFINED
1.13 +
1.14 +#include "SkCanvas.h"
1.15 +#include "SkColorPriv.h"
1.16 +
1.17 +/**
1.18 + * Converts pixels from one Config8888 to another Config8888
1.19 + */
1.20 +void SkConvertConfig8888Pixels(uint32_t* dstPixels,
1.21 + size_t dstRowBytes,
1.22 + SkCanvas::Config8888 dstConfig,
1.23 + const uint32_t* srcPixels,
1.24 + size_t srcRowBytes,
1.25 + SkCanvas::Config8888 srcConfig,
1.26 + int width,
1.27 + int height);
1.28 +
1.29 +/**
1.30 + * Packs a, r, g, b, values into byte order specified by config.
1.31 + */
1.32 +uint32_t SkPackConfig8888(SkCanvas::Config8888 config,
1.33 + uint32_t a,
1.34 + uint32_t r,
1.35 + uint32_t g,
1.36 + uint32_t b);
1.37 +
1.38 +///////////////////////////////////////////////////////////////////////////////
1.39 +// Implementation
1.40 +
1.41 +namespace {
1.42 +
1.43 +/**
1.44 + Copies all pixels from a bitmap to a dst ptr with a given rowBytes and
1.45 + Config8888. The bitmap must have kARGB_8888_Config.
1.46 + */
1.47 +
1.48 +static inline void SkCopyBitmapToConfig8888(uint32_t* dstPixels,
1.49 + size_t dstRowBytes,
1.50 + SkCanvas::Config8888 dstConfig8888,
1.51 + const SkBitmap& srcBmp) {
1.52 + SkASSERT(SkBitmap::kARGB_8888_Config == srcBmp.config());
1.53 + SkAutoLockPixels alp(srcBmp);
1.54 + int w = srcBmp.width();
1.55 + int h = srcBmp.height();
1.56 + size_t srcRowBytes = srcBmp.rowBytes();
1.57 + const uint32_t* srcPixels = reinterpret_cast<uint32_t*>(srcBmp.getPixels());
1.58 +
1.59 + SkConvertConfig8888Pixels(dstPixels, dstRowBytes, dstConfig8888, srcPixels, srcRowBytes, SkCanvas::kNative_Premul_Config8888, w, h);
1.60 +}
1.61 +
1.62 +/**
1.63 + Copies over all pixels in a bitmap from a src ptr with a given rowBytes and
1.64 + Config8888. The bitmap must have pixels and be kARGB_8888_Config.
1.65 + */
1.66 +static inline void SkCopyConfig8888ToBitmap(const SkBitmap& dstBmp,
1.67 + const uint32_t* srcPixels,
1.68 + size_t srcRowBytes,
1.69 + SkCanvas::Config8888 srcConfig8888) {
1.70 + SkASSERT(SkBitmap::kARGB_8888_Config == dstBmp.config());
1.71 + SkAutoLockPixels alp(dstBmp);
1.72 + int w = dstBmp.width();
1.73 + int h = dstBmp.height();
1.74 + size_t dstRowBytes = dstBmp.rowBytes();
1.75 + uint32_t* dstPixels = reinterpret_cast<uint32_t*>(dstBmp.getPixels());
1.76 +
1.77 + SkConvertConfig8888Pixels(dstPixels, dstRowBytes, SkCanvas::kNative_Premul_Config8888, srcPixels, srcRowBytes, srcConfig8888, w, h);
1.78 +}
1.79 +
1.80 +}
1.81 +
1.82 +#endif
