mlib_videodct8x8quantize_s16_u8(3mlib) [opensolaris man page]
mlib_VideoDCT8x8Quantize_S16_U8(3MLIB) mediaLib Library Functions mlib_VideoDCT8x8Quantize_S16_U8(3MLIB) NAME
mlib_VideoDCT8x8Quantize_S16_U8 - forward Discrete Cosine Transform (DCT) and quantization SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_VideoDCT8x8Quantize_S16_U8( mlib_s16 coeffs[64], const mlib_u8 *block, const mlib_d64 dqtable[64], mlib_s32 stride); DESCRIPTION
The mlib_VideoDCT8x8Quantize_S16_U8() function computes the forward DCT and then quantizes the DCT coefficients. It's a combination of mlib_VideoDCT8x8_S16_U8() and mlib_VideoQuantize_S16() for better performance. The source and destination buffer addresses must be 8-byte aligned. 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: coeffs Pointer to the quantized DCT coefficients. Note that coeffs must be 8-byte aligned. block Pointer to an 8x8 block. Note that block must be 8-byte aligned. dqtable Pointer to the quantization table generated by mlib_VideoQuantizeInit_S16(). stride Stride in bytes between adjacent rows in the block. Note that stride must be a multiple of eight. 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_S16_B12_NA(3MLIB), mlib_VideoDCT8x8Quantize_S16_U8_NA(3MLIB), mlib_VideoQuantizeInit_S16(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_VideoDCT8x8Quantize_S16_U8(3MLIB)
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mlib_VideoDCT8x8_S16_U8(3MLIB) mediaLib Library Functions mlib_VideoDCT8x8_S16_U8(3MLIB) NAME
mlib_VideoDCT8x8_S16_U8 - forward Discrete Cosine Transform (DCT) SYNOPSIS
cc [ flag... ] file... -lmlib [ library... ] #include <mlib.h> mlib_status mlib_VideoDCT8x8_S16_U8(mlib_s16 coeffs[64], const mlib_u8 *block, mlib_s32 stride); DESCRIPTION
The mlib_VideoDCT8x8_S16_U8() function computes the forward DCT for the destination DCT coefficients of data type mlib_s16 and source block of data type mlib_u8. The stride applies to the block that is part of the frame currently being encoded. The source and destination buffer addresses must be 8-byte aligned. 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: coeffs Pointer to the destination DCT coefficients. Note that coeffs must be 8-byte aligned. block Pointer to an 8x8 block in the current frame. Note that block must be 8-byte aligned. stride Stride in bytes between adjacent rows in the block. Note that stride must be a multiple of eight. 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_B10(3MLIB), mlib_VideoDCT8x8_S16_S16_B10_NA(3MLIB), mlib_VideoDCT8x8_S16_S16_B12(3MLIB), mlib_VideoDCT8x8_S16_U8_NA(3MLIB), mlib_VideoDCT16x16_S16_S16(3MLIB), mlib_VideoDCT16x16_S16_S16_B10(3MLIB), mlib_VideoDeQuantize_S16(3MLIB), mlib_VideoDeQuan- tizeInit_S16(3MLIB), mlib_VideoQuantize_S16(3MLIB), mlib_VideoQuantizeInit_S16(3MLIB), attributes(5) SunOS 5.11 2 Mar 2007 mlib_VideoDCT8x8_S16_U8(3MLIB)