The Tor Browser: gfx/skia/trunk/src/image/SkImagePriv.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /*

     2  * Copyright 2012 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  */

     8 #ifndef SkImagePriv_DEFINED

     9 #define SkImagePriv_DEFINED

    11 #include "SkBitmap.h"

    12 #include "SkImage.h"

    14 class SkPicture;

    16 extern SkBitmap::Config SkImageInfoToBitmapConfig(const SkImageInfo&);

    18 // Call this if you explicitly want to use/share this pixelRef in the image

    19 extern SkImage* SkNewImageFromPixelRef(const SkImageInfo&, SkPixelRef*,

    20                                        size_t rowBytes);

    22 /**

    23  *  Examines the bitmap to decide if it can share the existing pixelRef, or

    24  *  if it needs to make a deep-copy of the pixels. The bitmap's pixelref will

    25  *  be shared if either the bitmap is marked as immutable, or canSharePixelRef

    26  *  is true.

    27  *

    28  *  If the bitmap's config cannot be converted into a corresponding

    29  *  SkImageInfo, or the bitmap's pixels cannot be accessed, this will return

    30  *  NULL.

    31  */

    32 extern SkImage* SkNewImageFromBitmap(const SkBitmap&, bool canSharePixelRef);

    34 extern void SkImagePrivDrawPicture(SkCanvas*, SkPicture*,

    35                                    SkScalar x, SkScalar y, const SkPaint*);

    37 extern void SkImagePrivDrawPicture(SkCanvas*, SkPicture*,

    38                                    const SkRect*, const SkRect&, const SkPaint*);

    40 /**

    41  *  Return an SkImage whose contents are those of the specified picture. Note:

    42  *  The picture itself is unmodified, and may continue to be used for recording

    43  */

    44 extern SkImage* SkNewImageFromPicture(const SkPicture*);

    46 static inline size_t SkImageMinRowBytes(const SkImageInfo& info) {

    47     return SkAlign4(info.minRowBytes());

    48 }

    50 // Given an image created from SkNewImageFromBitmap, return its pixelref. This

    51 // may be called to see if the surface and the image share the same pixelref,

    52 // in which case the surface may need to perform a copy-on-write.

    53 extern SkPixelRef* SkBitmapImageGetPixelRef(SkImage* rasterImage);

    55 // Given an image created with NewPicture, return its SkPicture.

    56 extern SkPicture* SkPictureImageGetPicture(SkImage* pictureImage);

    58 // Given an image created with NewTexture, return its GrTexture. This

    59 // may be called to see if the surface and the image share the same GrTexture,

    60 // in which case the surface may need to perform a copy-on-write.

    61 extern GrTexture* SkTextureImageGetTexture(SkImage* textureImage);

    63 // Update the texture wrapped by an image created with NewTexture. This

    64 // is called when a surface and image share the same GrTexture and the

    65 // surface needs to perform a copy-on-write

    66 extern void SkTextureImageSetTexture(SkImage* image, GrTexture* texture);

    68 #endif

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