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)
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mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA(3MLIB) mediaLib Library Functions mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA(3MLIB) NAME
mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA - dequantization and inverse Discrete Cosine Transform (IDCT) SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA( mlib_u8 *block, const mlib_s16 coeffs[64], const mlib_d64 dqtable[64], mlib_s32 stride); DESCRIPTION
The mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA() function dequantizes the quantized DCT coefficients and then computes the inverse DCT. It's a combination of mlib_VideoDeQuantize_S16() and mlib_VideoIDCT8x8_U8_S16_NA() for better performance. This function requires no special address alignment. This function can be used in JPEG with 8-bit precision, or in MPEG for the intra mode. PARAMETERS
The function takes the following arguments: block Pointer to an 8x8 block. coeffs Pointer to the input quantized DCT coefficients. dqtable Pointer to the dequantization table generated by mlib_VideoDeQuantizeInit_S16(). stride Stride in bytes between adjacent rows in the block. 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_VideoDeQuantizeIDCT8x8_S16_S16_B12(3MLIB), mlib_VideoDeQuantizeIDCT8x8_S16_S16_B12_NA(3MLIB), mlib_VideoDeQuantizeI- DCT8x8_U8_S16(3MLIB), mlib_VideoDeQuantizeInit_S16(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_VideoDeQuantizeIDCT8x8_U8_S16_NA(3MLIB)