| 1 | /***************************************************************************** |
| 2 | * x265: ShortYUV class for short sized YUV-style frames |
| 3 | ***************************************************************************** |
| 4 | * Copyright (C) 2013 x265 project |
| 5 | * |
| 6 | * Authors: Deepthi Nandakumar <deepthi@multicorewareinc.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. |
| 21 | * |
| 22 | * This program is also available under a commercial proprietary license. |
| 23 | * For more information, contact us at license @ x265.com |
| 24 | *****************************************************************************/ |
| 25 | |
| 26 | #ifndef X265_SHORTYUV_H |
| 27 | #define X265_SHORTYUV_H |
| 28 | |
| 29 | #include "common.h" |
| 30 | |
| 31 | namespace x265 { |
| 32 | // private namespace |
| 33 | |
| 34 | class Yuv; |
| 35 | |
| 36 | /* A ShortYuv instance holds int16_ts for a square CU (64x64 down to 8x8) for all three planes, |
| 37 | * these are typically used to hold residual or coefficients */ |
| 38 | class ShortYuv |
| 39 | { |
| 40 | public: |
| 41 | |
| 42 | int16_t* m_buf[3]; |
| 43 | |
| 44 | uint32_t m_size; |
| 45 | uint32_t m_csize; |
| 46 | |
| 47 | int m_csp; |
| 48 | int m_hChromaShift; |
| 49 | int m_vChromaShift; |
| 50 | |
| 51 | ShortYuv(); |
| 52 | |
| 53 | bool create(uint32_t size, int csp); |
| 54 | void destroy(); |
| 55 | void clear(); |
| 56 | |
| 57 | int16_t* getLumaAddr(uint32_t absPartIdx) { return m_buf[0] + getAddrOffset(absPartIdx, m_size); } |
| 58 | int16_t* getCbAddr(uint32_t absPartIdx) { return m_buf[1] + getChromaAddrOffset(absPartIdx); } |
| 59 | int16_t* getCrAddr(uint32_t absPartIdx) { return m_buf[2] + getChromaAddrOffset(absPartIdx); } |
| 60 | int16_t* getChromaAddr(uint32_t chromaId, uint32_t partUnitIdx) { return m_buf[chromaId] + getChromaAddrOffset(partUnitIdx); } |
| 61 | |
| 62 | const int16_t* getLumaAddr(uint32_t absPartIdx) const { return m_buf[0] + getAddrOffset(absPartIdx, m_size); } |
| 63 | const int16_t* getCbAddr(uint32_t absPartIdx) const { return m_buf[1] + getChromaAddrOffset(absPartIdx); } |
| 64 | const int16_t* getCrAddr(uint32_t absPartIdx) const { return m_buf[2] + getChromaAddrOffset(absPartIdx); } |
| 65 | const int16_t* getChromaAddr(uint32_t chromaId, uint32_t partUnitIdx) const { return m_buf[chromaId] + getChromaAddrOffset(partUnitIdx); } |
| 66 | |
| 67 | void subtract(const Yuv& srcYuv0, const Yuv& srcYuv1, uint32_t log2Size); |
| 68 | |
| 69 | void copyPartToPartLuma(ShortYuv& dstYuv, uint32_t absPartIdx, uint32_t log2Size) const; |
| 70 | void copyPartToPartChroma(ShortYuv& dstYuv, uint32_t absPartIdx, uint32_t log2SizeL) const; |
| 71 | |
| 72 | void copyPartToPartLuma(Yuv& dstYuv, uint32_t absPartIdx, uint32_t log2Size) const; |
| 73 | void copyPartToPartChroma(Yuv& dstYuv, uint32_t absPartIdx, uint32_t log2SizeL) const; |
| 74 | |
| 75 | int getChromaAddrOffset(uint32_t idx) const |
| 76 | { |
| 77 | int blkX = g_zscanToPelX[idx] >> m_hChromaShift; |
| 78 | int blkY = g_zscanToPelY[idx] >> m_vChromaShift; |
| 79 | |
| 80 | return blkX + blkY * m_csize; |
| 81 | } |
| 82 | |
| 83 | static int getAddrOffset(uint32_t idx, uint32_t width) |
| 84 | { |
| 85 | int blkX = g_zscanToPelX[idx]; |
| 86 | int blkY = g_zscanToPelY[idx]; |
| 87 | |
| 88 | return blkX + blkY * width; |
| 89 | } |
| 90 | }; |
| 91 | } |
| 92 | |
| 93 | #endif // ifndef X265_SHORTYUV_H |