94 lines
4.1 KiB
C++
94 lines
4.1 KiB
C++
/*!
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* \copy
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* Copyright (c) 2013, Cisco Systems
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef WELS_VLC_ENCODER_H__
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#define WELS_VLC_ENCODER_H__
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#include "bit_stream.h"
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#include "svc_enc_golomb.h"
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/************************************************************************/
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/* VLC FOR WELS ENCODER */
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/************************************************************************/
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namespace WelsSVCEnc {
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//g_kuiVlcCoeffToken[uiNc][total-coeff][trailing-ones][0--value, 1--bit count]
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extern const uint8_t g_kuiVlcCoeffToken[5][17][4][2];
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extern const uint8_t g_kuiVlcLevelPrefix[15][2];
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//g_kuiVlcTotalZeros[tzVlcIndex][uiTotalZeros][0--value, 1--bit count]
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extern const uint8_t g_kuiVlcTotalZeros[16][16][2];
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extern const uint8_t g_kuiVlcTotalZerosChromaDc[4][4][2];
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//add for mgs
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extern const uint8_t g_kuiVlcTotalZerosChromaDc422[8][8][2];
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//g_kuiVlcRunBefore[zeros-left][run-before][0--value, 1--bit count]
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extern const uint8_t g_kuiVlcRunBefore[8][15][2];
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extern const ALIGNED_DECLARE (uint8_t, g_kuiEncNcMapTable[18], 16);
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#define CHROMA_DC_NC_OFFSET 17
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static inline int32_t WriteTotalCoeffTrailingones (SBitStringAux* pBs, uint8_t uiNc, uint8_t uiTotalCoeff,
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uint8_t uiTrailingOnes) {
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const uint8_t kuiNcIdx = g_kuiEncNcMapTable[uiNc];
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const uint8_t* kpCoeffToken = &g_kuiVlcCoeffToken[kuiNcIdx][uiTotalCoeff][uiTrailingOnes][0];
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return BsWriteBits (pBs, kpCoeffToken[1], kpCoeffToken[0]);
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}
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static inline int32_t WriteTotalcoeffTrailingonesChroma (SBitStringAux* pBs, uint8_t uiTotalCoeff,
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uint8_t uiTrailingOnes) {
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const uint8_t* kpCoeffToken = &g_kuiVlcCoeffToken[4][uiTotalCoeff][uiTrailingOnes][0];
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return BsWriteBits (pBs, kpCoeffToken[1], kpCoeffToken[0]);
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}
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//kuiZeroCount = level_prefix;
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static inline int32_t WriteLevelPrefix (SBitStringAux* pBs, const uint32_t kuiZeroCount) {
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BsWriteBits (pBs, kuiZeroCount + 1, 1);
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return 0;
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}
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static inline int32_t WriteTotalZeros (SBitStringAux* pBs, uint32_t uiTotalCoeff, uint32_t uiTotalZeros) {
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const uint8_t* kpTotalZeros = &g_kuiVlcTotalZeros[uiTotalCoeff][uiTotalZeros][0];
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return BsWriteBits (pBs, kpTotalZeros[1], kpTotalZeros[0]);
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}
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static inline int32_t WriteTotalZerosChromaDc (SBitStringAux* pBs, uint32_t uiTotalCoeff, uint32_t uiTotalZeros) {
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const uint8_t* kpTotalZerosChromaDc = &g_kuiVlcTotalZerosChromaDc[uiTotalCoeff][uiTotalZeros][0];
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return BsWriteBits (pBs, kpTotalZerosChromaDc[1], kpTotalZerosChromaDc[0]);
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}
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static inline int32_t WriteRunBefore (SBitStringAux* pBs, uint8_t uiZeroLeft, uint8_t uiRunBefore) {
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const uint8_t* kpRunBefore = &g_kuiVlcRunBefore[uiZeroLeft][uiRunBefore][0];
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return BsWriteBits (pBs, kpRunBefore[1], kpRunBefore[0]);
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}
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}
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#endif
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