ref: f148a8a7aecef79d47db725aafad5b3b2250ac2d
dir: /codec/encoder/core/inc/vlc_encoder.h/
/*! * \copy * Copyright (c) 2013, Cisco Systems * 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 WELS_VLC_ENCODER_H__ #define WELS_VLC_ENCODER_H__ #include "bit_stream.h" #include "svc_enc_golomb.h" /************************************************************************/ /* VLC FOR WELS ENCODER */ /************************************************************************/ namespace WelsSVCEnc { //g_kuiVlcCoeffToken[uiNc][total-coeff][trailing-ones][0--value, 1--bit count] extern const uint8_t g_kuiVlcCoeffToken[5][17][4][2]; extern const uint8_t g_kuiVlcLevelPrefix[15][2]; //g_kuiVlcTotalZeros[tzVlcIndex][uiTotalZeros][0--value, 1--bit count] extern const uint8_t g_kuiVlcTotalZeros[16][16][2]; extern const uint8_t g_kuiVlcTotalZerosChromaDc[4][4][2]; //add for mgs extern const uint8_t g_kuiVlcTotalZerosChromaDc422[8][8][2]; //g_kuiVlcRunBefore[zeros-left][run-before][0--value, 1--bit count] extern const uint8_t g_kuiVlcRunBefore[8][15][2]; extern const ALIGNED_DECLARE (uint8_t, g_kuiEncNcMapTable[18], 16); #define CHROMA_DC_NC_OFFSET 17 static inline int32_t WriteTotalCoeffTrailingones (SBitStringAux* pBs, uint8_t uiNc, uint8_t uiTotalCoeff, uint8_t uiTrailingOnes) { const uint8_t kuiNcIdx = g_kuiEncNcMapTable[uiNc]; const uint8_t* kpCoeffToken = &g_kuiVlcCoeffToken[kuiNcIdx][uiTotalCoeff][uiTrailingOnes][0]; return BsWriteBits (pBs, kpCoeffToken[1], kpCoeffToken[0]); } static inline int32_t WriteTotalcoeffTrailingonesChroma (SBitStringAux* pBs, uint8_t uiTotalCoeff, uint8_t uiTrailingOnes) { const uint8_t* kpCoeffToken = &g_kuiVlcCoeffToken[4][uiTotalCoeff][uiTrailingOnes][0]; return BsWriteBits (pBs, kpCoeffToken[1], kpCoeffToken[0]); } //kuiZeroCount = level_prefix; static inline int32_t WriteLevelPrefix (SBitStringAux* pBs, const uint32_t kuiZeroCount) { BsWriteBits (pBs, kuiZeroCount + 1, 1); return 0; } static inline int32_t WriteTotalZeros (SBitStringAux* pBs, uint32_t uiTotalCoeff, uint32_t uiTotalZeros) { const uint8_t* kpTotalZeros = &g_kuiVlcTotalZeros[uiTotalCoeff][uiTotalZeros][0]; return BsWriteBits (pBs, kpTotalZeros[1], kpTotalZeros[0]); } static inline int32_t WriteTotalZerosChromaDc (SBitStringAux* pBs, uint32_t uiTotalCoeff, uint32_t uiTotalZeros) { const uint8_t* kpTotalZerosChromaDc = &g_kuiVlcTotalZerosChromaDc[uiTotalCoeff][uiTotalZeros][0]; return BsWriteBits (pBs, kpTotalZerosChromaDc[1], kpTotalZerosChromaDc[0]); } static inline int32_t WriteRunBefore (SBitStringAux* pBs, uint8_t uiZeroLeft, uint8_t uiRunBefore) { const uint8_t* kpRunBefore = &g_kuiVlcRunBefore[uiZeroLeft][uiRunBefore][0]; return BsWriteBits (pBs, kpRunBefore[1], kpRunBefore[0]); } } #endif