Yucom/jxrlib/image/decode/decode.h
2020-09-29 14:29:06 -05:00

143 lines
4.9 KiB
C

//*@@@+++@@@@******************************************************************
//
// Copyright © Microsoft Corp.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// • Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// • Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
//*@@@---@@@@******************************************************************
#ifndef WMI_DECODE_H
#define WMI_DECODE_H
typedef struct CWMDecoderParameters {
/** ROI decode **/
Bool bDecodeFullFrame;
Bool bDecodeFullWidth;
/** thumbnail decode **/
Bool bSkipFlexbits;
size_t cThumbnailScale; // 1: cThumbnailScale thumbnail, only supports cThumbnailScale = 2^m for now
Bool bDecodeHP;
Bool bDecodeLP;
// Region of interest decoding
size_t cROILeftX;
size_t cROIRightX;
size_t cROITopY;
size_t cROIBottomY;
// table lookups for rotation and flip
size_t * pOffsetX;
size_t * pOffsetY;
} CWMDecoderParameters;
Void predCBPDec(CWMImageStrCodec *, CCodingContext *);
Void predDCACDec(CWMImageStrCodec *);
Void predACDec(CWMImageStrCodec *);
Int dequantizeMacroblock(CWMImageStrCodec *);
Int invTransformMacroblock(CWMImageStrCodec * pSC);
Int invTransformMacroblock_alteredOperators_hard(CWMImageStrCodec * pSC);
Int DecodeMacroblockDC(CWMImageStrCodec * pSC, CCodingContext *pContext, Int iMBX, Int iMBY);
Int DecodeMacroblockLowpass(CWMImageStrCodec * pSC, CCodingContext *pContext, Int iMBX, Int iMBY);
Int DecodeMacroblockHighpass(CWMImageStrCodec * pSC, CCodingContext *pContext, Int iMBX, Int iMBY);
Int AdaptLowpassDec(struct CCodingContext *);
Int AdaptHighpassDec(struct CCodingContext *);
Void ResetCodingContextDec(CCodingContext *pContext);
Void FreeCodingContextDec(struct CWMImageStrCodec *pSC);
/*************************************************************************/
// Inverse transform functions
// 2-point post filter for boundaries (only used in 420 UV DC subband)
Void strPost2(PixelI *, PixelI *);
// 2x2 post filter (only used in 420 UV DC subband)
Void strPost2x2(PixelI *, PixelI *, PixelI *, PixelI *);
/** 4-point post filter for boundaries **/
Void strPost4(PixelI *, PixelI *, PixelI *, PixelI *);
/** data allocation in working buffer (first stage) **/
/** Y, 444 U and V **/
/** 0 1 2 3 **/
/** 32 33 34 35 **/
/** 64 65 66 67 **/
/** 96 97 98 99 **/
/** 420 U and V **/
/** 0 2 4 6 **/
/** 64 66 68 70 **/
/** 128 130 132 134 **/
/** 192 194 196 198 **/
/** 4x4 inverse DCT for first stage **/
Void strIDCT4x4FirstStage(PixelI *);
Void strIDCT4x4Stage1(PixelI*);
Void strIDCT4x4FirstStage420UV(PixelI *);
/** 4x4 post filter for first stage **/
Void strPost4x4FirstStage(PixelI *);
Void strPost4x4Stage1Split(PixelI*, PixelI*, Int, Int, Bool);
Void strPost4x4Stage1(PixelI*, Int, Int, Bool);
Void strPost4x4Stage1Split_alternate(PixelI*, PixelI*, Int);
Void strPost4x4Stage1_alternate(PixelI*, Int);
//Void strPost4x4Stage1Split_420(PixelI*, PixelI*);
//Void strPost4x4Stage1_420(PixelI*);
Void strPost4x4FirstStage420UV(PixelI *);
/** data allocation in working buffer (second stage)**/
/** Y, 444 U and V **/
/** 0 4 8 12 **/
/** 128 132 136 140 **/
/** 256 260 264 268 **/
/** 384 388 392 396 **/
/** 420 U and V **/
/** 0 8 **/
/** 256 264 **/
/** 4x4 invesr DCT for second stage **/
//Void strIDCT4x4SecondStage(PixelI *);
Void strIDCT4x4Stage2(PixelI*);
Void strNormalizeDec(PixelI*, Bool);
Void strDCT2x2dnDec(PixelI *, PixelI *, PixelI *, PixelI *);
/** 4x4 post filter for second stage **/
Void strPost4x4SecondStage(PixelI *);
Void strPost4x4Stage2Split(PixelI*, PixelI*);
Void strPost4x4Stage2Split_alternate(PixelI*, PixelI*);
/** Huffman decode related defines **/
#define HUFFMAN_DECODE_ROOT_BITS_LOG 3
#define HUFFMAN_DECODE_ROOT_BITS (5)
Int getHuff(const short *pDecodeTable, BitIOInfo* pIO);
#endif // WMI_DECODE_H