| 1 | /***************************************************************************** |
| 2 | * Copyright (C) 2014 x265 project |
| 3 | * |
| 4 | * Authors: Steve Borho <steve@borho.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. |
| 19 | * |
| 20 | * This program is also available under a commercial proprietary license. |
| 21 | * For more information, contact us at license @ x265.com. |
| 22 | *****************************************************************************/ |
| 23 | |
| 24 | #ifndef X265_YUV_H |
| 25 | #define X265_YUV_H |
| 26 | |
| 27 | #include "common.h" |
| 28 | #include "primitives.h" |
| 29 | |
| 30 | namespace x265 { |
| 31 | // private namespace |
| 32 | |
| 33 | class ShortYuv; |
| 34 | class PicYuv; |
| 35 | |
| 36 | /* A Yuv instance holds pixels for a square CU (64x64 down to 8x8) for all three planes |
| 37 | * these are typically used to hold fenc, predictions, or reconstructed blocks */ |
| 38 | class Yuv |
| 39 | { |
| 40 | public: |
| 41 | |
| 42 | pixel* m_buf[3]; |
| 43 | |
| 44 | uint32_t m_size; |
| 45 | uint32_t m_csize; |
| 46 | int m_part; // cached partition enum size |
| 47 | |
| 48 | int m_csp; |
| 49 | int m_hChromaShift; |
| 50 | int m_vChromaShift; |
| 51 | |
| 52 | Yuv(); |
| 53 | |
| 54 | bool create(uint32_t size, int csp); |
| 55 | void destroy(); |
| 56 | |
| 57 | // Copy YUV buffer to picture buffer |
| 58 | void copyToPicYuv(PicYuv& destPicYuv, uint32_t cuAddr, uint32_t absPartIdx) const; |
| 59 | |
| 60 | // Copy YUV buffer from picture buffer |
| 61 | void copyFromPicYuv(const PicYuv& srcPicYuv, uint32_t cuAddr, uint32_t absPartIdx); |
| 62 | |
| 63 | // Copy from same size YUV buffer |
| 64 | void copyFromYuv(const Yuv& srcYuv); |
| 65 | |
| 66 | // Copy Small YUV buffer to the part of other Big YUV buffer |
| 67 | void copyToPartYuv(Yuv& dstYuv, uint32_t absPartIdx) const; |
| 68 | |
| 69 | // Copy the part of Big YUV buffer to other Small YUV buffer |
| 70 | void copyPartToYuv(Yuv& dstYuv, uint32_t absPartIdx) const; |
| 71 | |
| 72 | // Clip(srcYuv0 + srcYuv1) -> m_buf .. aka recon = clip(pred + residual) |
| 73 | void addClip(const Yuv& srcYuv0, const ShortYuv& srcYuv1, uint32_t log2SizeL); |
| 74 | |
| 75 | // (srcYuv0 + srcYuv1)/2 for YUV partition (bidir averaging) |
| 76 | void addAvg(const ShortYuv& srcYuv0, const ShortYuv& srcYuv1, uint32_t absPartIdx, uint32_t width, uint32_t height, bool bLuma, bool bChroma); |
| 77 | |
| 78 | void copyPartToPartLuma(Yuv& dstYuv, uint32_t absPartIdx, uint32_t log2Size) const; |
| 79 | void copyPartToPartChroma(Yuv& dstYuv, uint32_t absPartIdx, uint32_t log2SizeL) const; |
| 80 | |
| 81 | pixel* getLumaAddr(uint32_t absPartIdx) { return m_buf[0] + getAddrOffset(absPartIdx, m_size); } |
| 82 | pixel* getCbAddr(uint32_t absPartIdx) { return m_buf[1] + getChromaAddrOffset(absPartIdx); } |
| 83 | pixel* getCrAddr(uint32_t absPartIdx) { return m_buf[2] + getChromaAddrOffset(absPartIdx); } |
| 84 | pixel* getChromaAddr(uint32_t chromaId, uint32_t absPartIdx) { return m_buf[chromaId] + getChromaAddrOffset(absPartIdx); } |
| 85 | |
| 86 | const pixel* getLumaAddr(uint32_t absPartIdx) const { return m_buf[0] + getAddrOffset(absPartIdx, m_size); } |
| 87 | const pixel* getCbAddr(uint32_t absPartIdx) const { return m_buf[1] + getChromaAddrOffset(absPartIdx); } |
| 88 | const pixel* getCrAddr(uint32_t absPartIdx) const { return m_buf[2] + getChromaAddrOffset(absPartIdx); } |
| 89 | const pixel* getChromaAddr(uint32_t chromaId, uint32_t absPartIdx) const { return m_buf[chromaId] + getChromaAddrOffset(absPartIdx); } |
| 90 | |
| 91 | int getChromaAddrOffset(uint32_t absPartIdx) const |
| 92 | { |
| 93 | int blkX = g_zscanToPelX[absPartIdx] >> m_hChromaShift; |
| 94 | int blkY = g_zscanToPelY[absPartIdx] >> m_vChromaShift; |
| 95 | |
| 96 | return blkX + blkY * m_csize; |
| 97 | } |
| 98 | |
| 99 | static int getAddrOffset(uint32_t absPartIdx, uint32_t width) |
| 100 | { |
| 101 | int blkX = g_zscanToPelX[absPartIdx]; |
| 102 | int blkY = g_zscanToPelY[absPartIdx]; |
| 103 | |
| 104 | return blkX + blkY * width; |
| 105 | } |
| 106 | }; |
| 107 | } |
| 108 | |
| 109 | #endif |