forked from mirror/libbpg
93 lines
3.7 KiB
C++
93 lines
3.7 KiB
C++
/*****************************************************************************
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* x265: ShortYUV class for short sized YUV-style frames
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*****************************************************************************
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* Copyright (C) 2013 x265 project
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*
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* Authors: Deepthi Nandakumar <deepthi@multicorewareinc.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
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*
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* This program is also available under a commercial proprietary license.
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* For more information, contact us at license @ x265.com
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*****************************************************************************/
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#ifndef X265_SHORTYUV_H
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#define X265_SHORTYUV_H
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#include "common.h"
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namespace X265_NS {
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// private namespace
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class Yuv;
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/* A ShortYuv instance holds int16_ts for a square CU (64x64 down to 8x8) for all three planes,
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* these are typically used to hold residual or coefficients */
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class ShortYuv
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{
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public:
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int16_t* m_buf[3];
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uint32_t m_size;
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uint32_t m_csize;
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int m_csp;
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int m_hChromaShift;
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int m_vChromaShift;
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ShortYuv();
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bool create(uint32_t size, int csp);
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void destroy();
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void clear();
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int16_t* getLumaAddr(uint32_t absPartIdx) { return m_buf[0] + getAddrOffset(absPartIdx, m_size); }
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int16_t* getCbAddr(uint32_t absPartIdx) { return m_buf[1] + getChromaAddrOffset(absPartIdx); }
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int16_t* getCrAddr(uint32_t absPartIdx) { return m_buf[2] + getChromaAddrOffset(absPartIdx); }
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int16_t* getChromaAddr(uint32_t chromaId, uint32_t partUnitIdx) { return m_buf[chromaId] + getChromaAddrOffset(partUnitIdx); }
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const int16_t* getLumaAddr(uint32_t absPartIdx) const { return m_buf[0] + getAddrOffset(absPartIdx, m_size); }
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const int16_t* getCbAddr(uint32_t absPartIdx) const { return m_buf[1] + getChromaAddrOffset(absPartIdx); }
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const int16_t* getCrAddr(uint32_t absPartIdx) const { return m_buf[2] + getChromaAddrOffset(absPartIdx); }
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const int16_t* getChromaAddr(uint32_t chromaId, uint32_t partUnitIdx) const { return m_buf[chromaId] + getChromaAddrOffset(partUnitIdx); }
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void subtract(const Yuv& srcYuv0, const Yuv& srcYuv1, uint32_t log2Size);
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void copyPartToPartLuma(ShortYuv& dstYuv, uint32_t absPartIdx, uint32_t log2Size) const;
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void copyPartToPartChroma(ShortYuv& dstYuv, uint32_t absPartIdx, uint32_t log2SizeL) const;
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void copyPartToPartLuma(Yuv& dstYuv, uint32_t absPartIdx, uint32_t log2Size) const;
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void copyPartToPartChroma(Yuv& dstYuv, uint32_t absPartIdx, uint32_t log2SizeL) const;
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int getChromaAddrOffset(uint32_t idx) const
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{
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int blkX = g_zscanToPelX[idx] >> m_hChromaShift;
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int blkY = g_zscanToPelY[idx] >> m_vChromaShift;
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return blkX + blkY * m_csize;
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}
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static int getAddrOffset(uint32_t idx, uint32_t width)
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{
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int blkX = g_zscanToPelX[idx];
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int blkY = g_zscanToPelY[idx];
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return blkX + blkY * width;
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}
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};
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}
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#endif // ifndef X265_SHORTYUV_H
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