2 * Copyright 2012 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
8 #ifndef SkImagePriv_DEFINED
9 #define SkImagePriv_DEFINED
13 // Call this if you explicitly want to use/share this pixelRef in the image
14 extern SkImage* SkNewImageFromPixelRef(const SkImageInfo&, SkPixelRef*,
18 * Examines the bitmap to decide if it can share the existing pixelRef, or
19 * if it needs to make a deep-copy of the pixels. The bitmap's pixelref will
20 * be shared if either the bitmap is marked as immutable, or canSharePixelRef
23 * If the bitmap's colortype cannot be converted into a corresponding
24 * SkImageInfo, or the bitmap's pixels cannot be accessed, this will return
27 extern SkImage* SkNewImageFromBitmap(const SkBitmap&, bool canSharePixelRef);
29 static inline size_t SkImageMinRowBytes(const SkImageInfo& info) {
30 return SkAlign4(info.minRowBytes());
33 // Given an image created from SkNewImageFromBitmap, return its pixelref. This
34 // may be called to see if the surface and the image share the same pixelref,
35 // in which case the surface may need to perform a copy-on-write.
36 extern const SkPixelRef* SkBitmapImageGetPixelRef(const SkImage* rasterImage);
38 // Given an image created with NewTexture, return its GrTexture. This
39 // may be called to see if the surface and the image share the same GrTexture,
40 // in which case the surface may need to perform a copy-on-write.
41 extern GrTexture* SkTextureImageGetTexture(SkImage* textureImage);
43 // Update the texture wrapped by an image created with NewTexture. This
44 // is called when a surface and image share the same GrTexture and the
45 // surface needs to perform a copy-on-write
46 extern void SkTextureImageSetTexture(SkImage* image, GrTexture* texture);