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Shell Programming and Scripting
Looking for awk code explaination
Post 302437116 by ensameer on Wednesday 14th of July 2010 04:26:35 AM
07-14-2010
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Hello Admin,
Could you pls explain on the below behavior of the awk command.
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65
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1:
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LEARN ABOUT OPENSOLARIS
mlib_videocoloryuv444seq_to_abgrint
mlib_VideoColorYUV444seq_to_ABGRint(3MLIB) mediaLib Library Functions mlib_VideoColorYUV444seq_to_ABGRint(3MLIB) NAME
mlib_VideoColorYUV444seq_to_ABGRint - color convert YUV sequential to ABGR interleaved SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> void mlib_VideoColorYUV444seq_to_ABGRint(mlib_u32 *ABGR, const mlib_u8 *Y, const mlib_u8 *U, const mlib_u8 *V, const mlib_u8 *A_array, mlib_u8 A_const, mlib_s32 w, mlib_s32 h, mlib_s32 dlb, mlib_s32 slb); DESCRIPTION
The Y, U, V pixel streams are converted into an ABGR pixel stream. All pixel components are 8-bit unsigned integers. All buffers have dimensions w and h. The alpha values for this function work in the following fashion: o If A_array pointer is not NULL, the values are taken from there. It has to have the same dimensions as the Y buffer. o If A_array pointer is NULL, the alpha values for every pixel are set to A_const. The following equation is used: |R| |1.1644 0.0000 1.5966| [|Y| | 16.0000|] |G| = |1.1644 -0.3920 -0.8132| * [|U| - |128.0000|] |B| |1.1644 2.0184 0.0000| [|V| |128.0000|] PARAMETERS
The function takes the following arguments: ABGR Pointer to output buffer. Y Pointer to Y input buffer. U Pointer to U input buffer. V Pointer to V input buffer. A_array Array of alpha values. A_const Constant alpha value. w Image width in pixels. h Image height in lines. dlb Linebytes for output buffer. slb Linebytes for input buffers. RETURN VALUES
None. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Committed | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
mlib_VideoColorYUV420seq_to_ARGBint(3MLIB), mlib_VideoColorYUV411seq_to_ARGBint(3MLIB), mlib_VideoColorYUV422seq_to_ARGBint(3MLIB), mlib_VideoColorYUV444seq_to_ARGBint(3MLIB), mlib_VideoColorYUV420seq_to_ABGRint(3MLIB), mlib_VideoColorYUV411seq_to_ABGRint(3MLIB), mlib_VideoColorYUV422seq_to_ABGRint(3MLIB), mlib_VideoColorYUYV422int_to_ARGBint(3MLIB), mlib_VideoColorYUV444int_to_ARGBint(3MLIB), mlib_VideoColorYUYV422int_to_ABGRint(3MLIB), mlib_VideoColorYUV444int_to_ABGRint(3MLIB), mlib_VideoColorUYVY422int_to_ARGBint(3MLIB), mlib_VideoColorUYVY422int_to_ABGRint(3MLIB), mlib_VideoColorUYV444int_to_ARGBint(3MLIB), mlib_VideoColorUYV444int_to_ABGRint(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_VideoColorYUV444seq_to_ABGRint(3MLIB)