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add doc precision for WebPPictureCopy() and WebPPictureView()

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output picture object is overwritten, not free'd or destroyed.

Change-Id: Ibb47ab444063e7ad90ff3d296260807ffe7ddbf9
This commit is contained in:
skal 2013-05-31 10:41:19 +02:00
parent 518f2cd738
commit 23d28e216d
1 changed files with 6 additions and 3 deletions
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9
src/webp/encode.h
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@ -360,8 +360,9 @@ WEBP_EXTERN(int) WebPPictureAlloc(WebPPicture* picture);
// preserved.
WEBP_EXTERN(void) WebPPictureFree(WebPPicture* picture);
// Copy the pixels of *src into *dst, using WebPPictureAlloc. Upon return,
// *dst will fully own the copied pixels (this is not a view).
// Copy the pixels of *src into *dst, using WebPPictureAlloc. Upon return, *dst
// will fully own the copied pixels (this is not a view). The 'dst' picture need
// not be initialized as its content is overwritten.
// Returns false in case of memory allocation error.
WEBP_EXTERN(int) WebPPictureCopy(const WebPPicture* src, WebPPicture* dst);
@ -392,7 +393,9 @@ WEBP_EXTERN(int) WebPPictureCrop(WebPPicture* picture,
// the top and left coordinates will be snapped to even values.
// Picture 'src' must out-live 'dst' picture. Self-extraction of view is allowed
// ('src' equal to 'dst') as a mean of fast-cropping (but note that doing so,
// the original dimension will be lost).
// the original dimension will be lost). Picture 'dst' need not be initialized
// with WebPPictureInit() if it is different from 'src', since its content will
// be overwritten.
// Returns false in case of memory allocation error or invalid parameters.
WEBP_EXTERN(int) WebPPictureView(const WebPPicture* src,
int left, int top, int width, int height,