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mlib_imageclearedge(3mlib) [opensolaris man page]

mlib_ImageClearEdge(3MLIB)				    mediaLib Library Functions					mlib_ImageClearEdge(3MLIB)

NAME
mlib_ImageClearEdge - sets edges of an image to a specific color SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageClearEdge(mlib_image *img, mlib_s32 dx, mlib_s32 dy, const mlib_s32 *color); DESCRIPTION
The mlib_ImageClearEdge() function sets edges of an image to a specific color. This function can be used in conjunction with the convolve and other spatial functions to fill in the pixel values along the edges. The data type of the image can be MLIB_BIT, MLIB_BYTE, MLIB_SHORT, MLIB_USHORT, or MLIB_INT. PARAMETERS
The function takes the following arguments: img Pointer to an image. dx Number of columns on the left and right edges of the image to be cleared. dy Number of rows at the top and bottom edges of the image to be cleared. color Array of color values by channel. color[i] contains the value for channel i. RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageClear(3MLIB), mlib_ImageClear_Fp(3MLIB), mlib_ImageClearEdge_Fp(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_ImageClearEdge(3MLIB)

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mlib_ImageDivAlpha_Inp(3MLIB)				    mediaLib Library Functions				     mlib_ImageDivAlpha_Inp(3MLIB)

NAME
mlib_ImageDivAlpha_Inp - alpha channel division, in place SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_ImageDivAlpha_Inp(mlib_image *srcdst, mlib_s32 cmask); DESCRIPTION
The mlib_ImageDivAlpha_Inp() function divides color channels by the alpha channel on a pixel-by-pixel basis, in place. For the MLIB_BYTE image, it uses the following equation: srcdst[x][y][c] = srcdst[x][y][c] / (srcdst[x][y][a] * 2**(-8)) For the MLIB_SHORT image, it uses the following equation: srcdst[x][y][c] = srcdst[x][y][c] / (srcdst[x][y][a] * 2**(-15)) For the MLIB_USHORT image, it uses the following equation: srcdst[x][y][c] = srcdst[x][y][c] / (srcdst[x][y][a] * 2**(-16)) For the MLIB_INT image, it uses the following equation: srcdst[x][y][c] = srcdst[x][y][c] / (srcdst[x][y][a] * 2**(-31)) where c and a are the indices for the color channels and the alpha channel, respectively, so c != a. In the case of srcdst[x][y][a] = 0, srcdst[x][y][c] = 0 if srcdst[x][y][c] = 0 srcdst[x][y][c] = DATA_TYPE_MAX if srcdst[x][y][c] > 0 srcdst[x][y][c] = DATA_TYPE_MIN if srcdst[x][y][c] < 0 where DATA_TYPE is MLIB_U8, MLIB_S16, MLIB_U16, or MLIB_S32 for an image of type MLIB_BYTE, MLIB_SHORT, MLIB_USHORT, or MLIB_INT, respec- tively. PARAMETERS
The function takes the following arguments: srcdst Pointer to source and destination image. cmask Channel mask to indicate the alpha channel. Each bit of the mask represents a channel in the image. The channel corresponding to the 1 bit of cmask is the alpha channel. RETURN VALUES
The function returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_ImageDivAlpha(3MLIB), mlib_ImageDivAlpha_Fp(3MLIB), mlib_ImageDivAlpha_Fp_Inp(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_ImageDivAlpha_Inp(3MLIB)

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