michael@0: /*
michael@0:  * Copyright 2011 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #ifndef SkConfig8888_DEFINED
michael@0: #define SkConfig8888_DEFINED
michael@0: 
michael@0: #include "SkCanvas.h"
michael@0: #include "SkColorPriv.h"
michael@0: 
michael@0: /**
michael@0:  * Converts pixels from one Config8888 to another Config8888
michael@0:  */
michael@0: void SkConvertConfig8888Pixels(uint32_t* dstPixels,
michael@0:                                size_t dstRowBytes,
michael@0:                                SkCanvas::Config8888 dstConfig,
michael@0:                                const uint32_t* srcPixels,
michael@0:                                size_t srcRowBytes,
michael@0:                                SkCanvas::Config8888 srcConfig,
michael@0:                                int width,
michael@0:                                int height);
michael@0: 
michael@0: /**
michael@0:  * Packs a, r, g, b, values into byte order specified by config.
michael@0:  */
michael@0: uint32_t SkPackConfig8888(SkCanvas::Config8888 config,
michael@0:                           uint32_t a,
michael@0:                           uint32_t r,
michael@0:                           uint32_t g,
michael@0:                           uint32_t b);
michael@0: 
michael@0: ///////////////////////////////////////////////////////////////////////////////
michael@0: // Implementation
michael@0: 
michael@0: namespace {
michael@0: 
michael@0: /**
michael@0:   Copies all pixels from a bitmap to a dst ptr with a given rowBytes and
michael@0:   Config8888. The bitmap must have kARGB_8888_Config.
michael@0:  */
michael@0: 
michael@0: static inline void SkCopyBitmapToConfig8888(uint32_t* dstPixels,
michael@0:                                      size_t dstRowBytes,
michael@0:                                      SkCanvas::Config8888 dstConfig8888,
michael@0:                                      const SkBitmap& srcBmp) {
michael@0:     SkASSERT(SkBitmap::kARGB_8888_Config == srcBmp.config());
michael@0:     SkAutoLockPixels alp(srcBmp);
michael@0:     int w = srcBmp.width();
michael@0:     int h = srcBmp.height();
michael@0:     size_t srcRowBytes = srcBmp.rowBytes();
michael@0:     const uint32_t* srcPixels = reinterpret_cast<uint32_t*>(srcBmp.getPixels());
michael@0: 
michael@0:     SkConvertConfig8888Pixels(dstPixels, dstRowBytes, dstConfig8888, srcPixels, srcRowBytes, SkCanvas::kNative_Premul_Config8888, w, h);
michael@0: }
michael@0: 
michael@0: /**
michael@0:   Copies over all pixels in a bitmap from a src ptr with a given rowBytes and
michael@0:   Config8888. The bitmap must have pixels and be kARGB_8888_Config.
michael@0:  */
michael@0: static inline void SkCopyConfig8888ToBitmap(const SkBitmap& dstBmp,
michael@0:                                      const uint32_t* srcPixels,
michael@0:                                      size_t srcRowBytes,
michael@0:                                      SkCanvas::Config8888 srcConfig8888) {
michael@0:     SkASSERT(SkBitmap::kARGB_8888_Config == dstBmp.config());
michael@0:     SkAutoLockPixels alp(dstBmp);
michael@0:     int w = dstBmp.width();
michael@0:     int h = dstBmp.height();
michael@0:     size_t dstRowBytes = dstBmp.rowBytes();
michael@0:     uint32_t* dstPixels = reinterpret_cast<uint32_t*>(dstBmp.getPixels());
michael@0: 
michael@0:     SkConvertConfig8888Pixels(dstPixels, dstRowBytes, SkCanvas::kNative_Premul_Config8888, srcPixels, srcRowBytes, srcConfig8888, w, h);
michael@0: }
michael@0: 
michael@0: }
michael@0: 
michael@0: #endif