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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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Could you pls explain on the below behavior of the awk command.
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65
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LEARN ABOUT SUNOS
mlib_videocoloryuv444int_to_argbint
mlib_VideoColorYUV444int_to_ARGBint(3MLIB) mediaLib Library Functions mlib_VideoColorYUV444int_to_ARGBint(3MLIB) NAME
mlib_VideoColorYUV444int_to_ARGBint - color convert YUV interleaved to ARGB interleaved SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> void mlib_VideoColorYUV444int_to_ARGBint(mlib_u32 *ARGB, const mlib_u8 *YUV, const mlib_u8 *A_array, mlib_u8 A_const, mlib_s32 w, mlib_s32 h, mlib_s32 dlb, mlib_s32 slb, mlib_s32 alb); DESCRIPTION
The YUV pixel stream is converted into an ARGB 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: ARGB Pointer to output buffer. YUV Pointer to Y 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 buffer. alb Linebytes for alpha buffer. 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_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_VideoColorYUV444seq_to_ABGRint(3MLIB), mlib_VideoColorYUYV422int_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 5.10 10 Nov 2004 mlib_VideoColorYUV444int_to_ARGBint(3MLIB)