1 /*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #ifndef SkPixelInfo_DEFINED
9 #define SkPixelInfo_DEFINED
10
11 #include "SkImageInfo.h"
12
13 class SkColorTable;
14
15 struct SkPixelInfo {
16 SkColorType fColorType;
17 SkAlphaType fAlphaType;
18 size_t fRowBytes;
19
20 static bool CopyPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes,
21 const SkImageInfo& srcInfo, const void* srcPixels, size_t srcRowBytes,
22 SkColorTable* srcCTable = nullptr);
23 };
24
25 struct SkDstPixelInfo : SkPixelInfo {
26 void* fPixels;
27 };
28
29 struct SkSrcPixelInfo : SkPixelInfo {
30 const void* fPixels;
31
32 // Guaranteed to work even if src.fPixels and dst.fPixels are the same
33 // (but not if they overlap partially)
34 bool convertPixelsTo(SkDstPixelInfo* dst, int width, int height) const;
35 };
36
SkRectMemcpy(void * dst,size_t dstRB,const void * src,size_t srcRB,size_t bytesPerRow,int rowCount)37 static inline void SkRectMemcpy(void* dst, size_t dstRB, const void* src, size_t srcRB,
38 size_t bytesPerRow, int rowCount) {
39 SkASSERT(bytesPerRow <= srcRB);
40 SkASSERT(bytesPerRow <= dstRB);
41 for (int i = 0; i < rowCount; ++i) {
42 memcpy(dst, src, bytesPerRow);
43 dst = (char*)dst + dstRB;
44 src = (const char*)src + srcRB;
45 }
46 }
47
48 #endif
49