1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/src/image/SkImagePriv.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,68 @@
1.4 +/*
1.5 + * Copyright 2012 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 SkImagePriv_DEFINED
1.12 +#define SkImagePriv_DEFINED
1.13 +
1.14 +#include "SkBitmap.h"
1.15 +#include "SkImage.h"
1.16 +
1.17 +class SkPicture;
1.18 +
1.19 +extern SkBitmap::Config SkImageInfoToBitmapConfig(const SkImageInfo&);
1.20 +
1.21 +// Call this if you explicitly want to use/share this pixelRef in the image
1.22 +extern SkImage* SkNewImageFromPixelRef(const SkImageInfo&, SkPixelRef*,
1.23 + size_t rowBytes);
1.24 +
1.25 +/**
1.26 + * Examines the bitmap to decide if it can share the existing pixelRef, or
1.27 + * if it needs to make a deep-copy of the pixels. The bitmap's pixelref will
1.28 + * be shared if either the bitmap is marked as immutable, or canSharePixelRef
1.29 + * is true.
1.30 + *
1.31 + * If the bitmap's config cannot be converted into a corresponding
1.32 + * SkImageInfo, or the bitmap's pixels cannot be accessed, this will return
1.33 + * NULL.
1.34 + */
1.35 +extern SkImage* SkNewImageFromBitmap(const SkBitmap&, bool canSharePixelRef);
1.36 +
1.37 +extern void SkImagePrivDrawPicture(SkCanvas*, SkPicture*,
1.38 + SkScalar x, SkScalar y, const SkPaint*);
1.39 +
1.40 +extern void SkImagePrivDrawPicture(SkCanvas*, SkPicture*,
1.41 + const SkRect*, const SkRect&, const SkPaint*);
1.42 +
1.43 +/**
1.44 + * Return an SkImage whose contents are those of the specified picture. Note:
1.45 + * The picture itself is unmodified, and may continue to be used for recording
1.46 + */
1.47 +extern SkImage* SkNewImageFromPicture(const SkPicture*);
1.48 +
1.49 +static inline size_t SkImageMinRowBytes(const SkImageInfo& info) {
1.50 + return SkAlign4(info.minRowBytes());
1.51 +}
1.52 +
1.53 +// Given an image created from SkNewImageFromBitmap, return its pixelref. This
1.54 +// may be called to see if the surface and the image share the same pixelref,
1.55 +// in which case the surface may need to perform a copy-on-write.
1.56 +extern SkPixelRef* SkBitmapImageGetPixelRef(SkImage* rasterImage);
1.57 +
1.58 +// Given an image created with NewPicture, return its SkPicture.
1.59 +extern SkPicture* SkPictureImageGetPicture(SkImage* pictureImage);
1.60 +
1.61 +// Given an image created with NewTexture, return its GrTexture. This
1.62 +// may be called to see if the surface and the image share the same GrTexture,
1.63 +// in which case the surface may need to perform a copy-on-write.
1.64 +extern GrTexture* SkTextureImageGetTexture(SkImage* textureImage);
1.65 +
1.66 +// Update the texture wrapped by an image created with NewTexture. This
1.67 +// is called when a surface and image share the same GrTexture and the
1.68 +// surface needs to perform a copy-on-write
1.69 +extern void SkTextureImageSetTexture(SkImage* image, GrTexture* texture);
1.70 +
1.71 +#endif
