mlib_videodct8x8quantize_s16_s16_b12_na(3mlib) [opensolaris man page]

mlib_VideoDCT8x8Quantize_S16_S16_B12_NA(3MLIB)		    mediaLib Library Functions		    mlib_VideoDCT8x8Quantize_S16_S16_B12_NA(3MLIB)

NAME

       mlib_VideoDCT8x8Quantize_S16_S16_B12_NA - forward Discrete Cosine Transform (DCT) and quantization

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_VideoDCT8x8Quantize_S16_S16_B12_NA(
	    mlib_s16 coeffs[64], const mlib_s16 block[64],
	    const mlib_d64 dqtable[64]);

DESCRIPTION

       The mlib_VideoDCT8x8Quantize_S16_S16_B12_NA() function computes the forward DCT and then quantizes the DCT coefficients. It's a combination
       of mlib_VideoDCT8x8_S16_S16_B12_NA() and mlib_VideoQuantize_S16() for better performance. The source to the DCT routine can occupy up to 12
       bits for each of its elements, i.e., should be within the range of [-2048, 2047].

       This function requires no special address alignment.

       This function can be used in JPEG with 12-bit precision, or in MPEG for the inter mode.

PARAMETERS

       The function takes the following arguments:

       coeffs	  Pointer to the quantized DCT coefficients.

       block	  Pointer to an 8x8 block.

       dqtable	  Pointer to the quantization table generated by mlib_VideoQuantizeInit_S16().

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_VideoDCT8x8Quantize_S16_S16_B12(3MLIB), mlib_VideoDCT8x8Quantize_S16_U8(3MLIB), mlib_VideoDCT8x8Quantize_S16_U8_NA(3MLIB), mlib_Video-
       QuantizeInit_S16(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007			    mlib_VideoDCT8x8Quantize_S16_S16_B12_NA(3MLIB)

Check Out this Related Man Page

mlib_VideoQuantize_S16(3MLIB)				    mediaLib Library Functions				     mlib_VideoQuantize_S16(3MLIB)

NAME

       mlib_VideoQuantize_S16 - quantization of forward Discrete Cosine Transform (DCT) coefficients

SYNOPSIS

       cc [ flag... ] file... -lmlib [ library... ]
       #include <mlib.h>

       mlib_status mlib_VideoQuantize_S16(mlib_s16 icoeffs[64],
	    const mlib_d64 dqtable[64]);

DESCRIPTION

       The mlib_VideoQuantize_S16() function performs quantization on DCT coefficients.

       The following equation is used:

	 icoeffs[i] = icoeffs[i] * dqtable[i];	0 <= i < 64

PARAMETERS

       The function takes the following arguments:

       icoeffs	  Pointer to the output DCT coefficients:

		    -2048 < icoeffs[i] < 2048

		  Note that icoeffs must be 8-byte aligned.

       dqtable	  Pointer to quantizer table coefficients.

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_VideoDCT2x2_S16_S16(3MLIB),   mlib_VideoDCT4x4_S16_S16(3MLIB),  mlib_VideoDCT8x8_S16_S16(3MLIB),  mlib_VideoDCT8x8_S16_S16_B12(3MLIB),
       mlib_VideoDCT8x8_S16_S16_NA(3MLIB), mlib_VideoDCT8x8_S16_U8(3MLIB),  mlib_VideoDCT8x8_S16_U8_NA(3MLIB),	mlib_VideoDCT16x16_S16_S16(3MLIB),
       mlib_VideoDCT16x16_S16_S16_B10(3MLIB),	   mlib_VideoDeQuantize_S16(3MLIB),	 mlib_VideoDeQuantizeInit_S16(3MLIB),	   mlib_VideoQuan-
       tizeInit_S16(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007					     mlib_VideoQuantize_S16(3MLIB)

Linux and UNIX Man Pages

mlib_videodct8x8quantize_s16_s16_b12_na(3mlib) [opensolaris man page]

Check Out this Related Man Page