mlib_VideoColorResizeABGR(3MLIB) mediaLib Library Functions mlib_VideoColorResizeABGR(3MLIB)NAME
mlib_VideoColorResizeABGR - image resize
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
void mlib_VideoColorResizeABGR(mlib_u32 *dst, const mlib_u32 *src, mlib_s32 dst_w, mlib_s32 dst_h, mlib_s32 dst_lb, mlib_s32 src_w,
mlib_s32 src_h, mlib_s32 src_lb, mlib_filter filter);
DESCRIPTION
The mlib_VideoColorResizeABGR() function resizes the source image with dimensions src_w, src_h into the destination image with dimensions
dst_w, dst_h using nearest-neighbor, bilinear interpolation, or bicubic interpolation. The source buffer can contain multi-banded pixel
stream, in which case, each band is resized independently. Edge conditions are handled according to the MLIB_EDGE_SRC_EXTEND scheme.
PARAMETERS
The function takes the following arguments:
dst Pointer to output image.
src Pointer to input image.
dst_w Output image width in pixels.
dst_h Output image height in rows.
dst_lb Input image width in pixels.
src_w Linebytes for input buffer.
src_h Input image height in lines.
src_lb Linebytes for input image.
filter Type of interpolation filter. It can be one of the following:
MLIB_NEAREST
MLIB_BILINEAR
MLIB_BICUBIC
RETURN VALUES
None.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO attributes(5)SunOS 5.10 10 Nov 2004 mlib_VideoColorResizeABGR(3MLIB)
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mlib_VideoColorBlendABGR(3MLIB) mediaLib Library Functions mlib_VideoColorBlendABGR(3MLIB)NAME
mlib_VideoColorBlendABGR, mlib_VideoColorBlendABGR_ResetAlpha - image blend
SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>
void mlib_VideoColorBlendABGR(mlib_u32 *dst, const mlib_u32 *src1, const mlib_u32 *src2, mlib_s32 src1_w, mlib_s32 src1_h, mlib_s32 src2_w,
mlib_s32 src2_h, mlib_s32 src2_x, mlib_s32 src2_y, mlib_s32 dst_lb, mlib_s32 src1_lb, mlib_s32 src2_lb, mlib_blend src1_blend, mlib_blend
src2_blend);
void mlib_VideoColorBlendABGR_ResetAlpha(mlib_u32 *dst, const mlib_u32 *src1, const mlib_u32 *src2, mlib_s32 src1_w, mlib_s32 src1_h,
mlib_s32 src2_w, mlib_s32 src2_h, mlib_s32 src2_x, mlib_s32 src2_y, mlib_s32 dst_lb, mlib_s32 src1_lb, mlib_s32 src2_lb, mlib_blend
src1_blend, mlib_blend src2_blend);
DESCRIPTION
The functions use the following equation for blending images:
dst = (src1 * src1_blend) + (src2 * src2_blend)
The two multi-banded source images (src1 and src2) are blended together and stored in the destination image (dst). The image buffers
pointed to by dst, src1, and src2 contain 4-banded ABGR images, 8 bits per component. src1_w and src1_h are the dimensions of the src1
input buffer. src2_w and src2_h are the dimensions of the src2 input buffer. The output buffer must be at least as large as the src1
input buffer. src2_x and src2_y are the offset of the src2 input buffer relative to src1. Where pixels in src2 overlap pixels in src1,
the pixels are blended. Pixels in src1 which are outside of src2 are copied into dst. Pixels in the dst image outside of src1 are left
unchanged. src1_blend specifies the blend function to be applied to the pixels of src1 image and src2_blend specifies the blend function
to be applied to the pixels of src2.
Possible blend functions are:
MLIB_BLEND_ZERO
MLIB_BLEND_ONE
MLIB_BLEND_SRC_ALPHA
MLIB_BLEND_ONE_MINUS_SRC_ALPHA
MLIB_BLEND_DST_ALPHA
MLIB_BLEND_ONE_MINUS_DST_ALPHA
MLIB_BLEND_SRC_ALPHA is the alpha component of image src2 scaled to the range 0.0 to 1.0. MLIB_BLEND_DST_ALPHA is the alpha component of
image src1 scaled to the range 0.0 to 1.0. All pixel components are treated as unsigned 8-bit quantities and the output pixel component
values are clamped to the range 0 to 255.
For the mlib_VideoColorBlendABGR_ResetAlpha() function, the alpha value of every pixel in destination image is set to 0 after blending is
complete.
PARAMETERS
Each of the functions takes the following arguments:
dst Pointer to output image.
src1 Pointer to 1st input image.
src2 Pointer to 2nd input image.
src1_w src1 image width in pixels.
src1_h src1 image height in rows.
src2_w src2 image width in pixels.
src2_h src2 image height in rows.
src2_x src2 horizontal displacement (in pixels), relative to the upper-left corner of src1.
src2_y src2 vertical displacement (in rows), relative to the upper-left corner of src1.
dst_lb Linebytes for output image.
src1_lb Linebytes for 1st input image.
src2_lb Linebytes for 2nd input image.
src1_blend Blend function for src1 image.
src2_blend Blend function for src2 image.
RETURN VALUES
None.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO mlib_VideoColorBlendABGR_Inp(3MLIB), attributes(5)SunOS 5.10 10 Nov 2004 mlib_VideoColorBlendABGR(3MLIB)