380 lines
12 KiB
C++
380 lines
12 KiB
C++
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/*****************************************************************************
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* Copyright (C) 2015 x265 project
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*
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* Authors: Steve Borho <steve@borho.org>
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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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#include "common.h"
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#include "primitives.h"
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#include "scalinglist.h"
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namespace {
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// file-anonymous namespace
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/* Strings for scaling list file parsing */
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const char MatrixType[4][6][20] =
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{
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{
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"INTRA4X4_LUMA",
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"INTRA4X4_CHROMAU",
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"INTRA4X4_CHROMAV",
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"INTER4X4_LUMA",
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"INTER4X4_CHROMAU",
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"INTER4X4_CHROMAV"
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},
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{
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"INTRA8X8_LUMA",
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"INTRA8X8_CHROMAU",
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"INTRA8X8_CHROMAV",
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"INTER8X8_LUMA",
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"INTER8X8_CHROMAU",
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"INTER8X8_CHROMAV"
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},
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{
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"INTRA16X16_LUMA",
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"INTRA16X16_CHROMAU",
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"INTRA16X16_CHROMAV",
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"INTER16X16_LUMA",
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"INTER16X16_CHROMAU",
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"INTER16X16_CHROMAV"
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},
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{
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"INTRA32X32_LUMA",
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"INTER32X32_LUMA",
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},
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};
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const char MatrixType_DC[4][12][22] =
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{
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{
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},
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{
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},
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{
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"INTRA16X16_LUMA_DC",
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"INTRA16X16_CHROMAU_DC",
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"INTRA16X16_CHROMAV_DC",
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"INTER16X16_LUMA_DC",
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"INTER16X16_CHROMAU_DC",
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"INTER16X16_CHROMAV_DC"
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},
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{
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"INTRA32X32_LUMA_DC",
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"INTER32X32_LUMA_DC",
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},
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};
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static int quantTSDefault4x4[16] =
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{
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16, 16, 16, 16,
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16, 16, 16, 16,
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16, 16, 16, 16,
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16, 16, 16, 16
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};
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static int quantIntraDefault8x8[64] =
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{
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16, 16, 16, 16, 17, 18, 21, 24,
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16, 16, 16, 16, 17, 19, 22, 25,
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16, 16, 17, 18, 20, 22, 25, 29,
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16, 16, 18, 21, 24, 27, 31, 36,
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17, 17, 20, 24, 30, 35, 41, 47,
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18, 19, 22, 27, 35, 44, 54, 65,
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21, 22, 25, 31, 41, 54, 70, 88,
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24, 25, 29, 36, 47, 65, 88, 115
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};
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static int quantInterDefault8x8[64] =
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{
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16, 16, 16, 16, 17, 18, 20, 24,
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16, 16, 16, 17, 18, 20, 24, 25,
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16, 16, 17, 18, 20, 24, 25, 28,
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16, 17, 18, 20, 24, 25, 28, 33,
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17, 18, 20, 24, 25, 28, 33, 41,
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18, 20, 24, 25, 28, 33, 41, 54,
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20, 24, 25, 28, 33, 41, 54, 71,
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24, 25, 28, 33, 41, 54, 71, 91
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};
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}
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namespace X265_NS {
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// private namespace
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const int ScalingList::s_numCoefPerSize[NUM_SIZES] = { 16, 64, 256, 1024 };
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const int32_t ScalingList::s_quantScales[NUM_REM] = { 26214, 23302, 20560, 18396, 16384, 14564 };
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const int32_t ScalingList::s_invQuantScales[NUM_REM] = { 40, 45, 51, 57, 64, 72 };
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ScalingList::ScalingList()
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{
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memset(m_quantCoef, 0, sizeof(m_quantCoef));
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memset(m_dequantCoef, 0, sizeof(m_dequantCoef));
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memset(m_scalingListCoef, 0, sizeof(m_scalingListCoef));
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}
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bool ScalingList::init()
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{
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bool ok = true;
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for (int sizeId = 0; sizeId < NUM_SIZES; sizeId++)
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{
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for (int listId = 0; listId < NUM_LISTS; listId++)
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{
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m_scalingListCoef[sizeId][listId] = X265_MALLOC(int32_t, X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[sizeId]));
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ok &= !!m_scalingListCoef[sizeId][listId];
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for (int rem = 0; rem < NUM_REM; rem++)
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{
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m_quantCoef[sizeId][listId][rem] = X265_MALLOC(int32_t, s_numCoefPerSize[sizeId]);
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m_dequantCoef[sizeId][listId][rem] = X265_MALLOC(int32_t, s_numCoefPerSize[sizeId]);
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ok &= m_quantCoef[sizeId][listId][rem] && m_dequantCoef[sizeId][listId][rem];
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}
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}
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}
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return ok;
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}
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ScalingList::~ScalingList()
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{
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for (int sizeId = 0; sizeId < NUM_SIZES; sizeId++)
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{
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for (int listId = 0; listId < NUM_LISTS; listId++)
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{
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X265_FREE(m_scalingListCoef[sizeId][listId]);
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for (int rem = 0; rem < NUM_REM; rem++)
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{
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X265_FREE(m_quantCoef[sizeId][listId][rem]);
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X265_FREE(m_dequantCoef[sizeId][listId][rem]);
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}
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}
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}
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}
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/* returns predicted list index if a match is found, else -1 */
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int ScalingList::checkPredMode(int size, int list) const
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{
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for (int predList = list; predList >= 0; predList--)
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{
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// check DC value
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if (size < BLOCK_16x16 && m_scalingListDC[size][list] != m_scalingListDC[size][predList])
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continue;
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// check value of matrix
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if (!memcmp(m_scalingListCoef[size][list],
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list == predList ? getScalingListDefaultAddress(size, predList) : m_scalingListCoef[size][predList],
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sizeof(int32_t) * X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[size])))
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return predList;
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}
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return -1;
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}
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/* check if use default quantization matrix
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* returns true if default quantization matrix is used in all sizes */
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bool ScalingList::checkDefaultScalingList() const
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{
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int defaultCounter = 0;
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for (int s = 0; s < NUM_SIZES; s++)
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for (int l = 0; l < NUM_LISTS; l++)
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if (!memcmp(m_scalingListCoef[s][l], getScalingListDefaultAddress(s, l),
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sizeof(int32_t) * X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[s])) &&
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((s < BLOCK_16x16) || (m_scalingListDC[s][l] == 16)))
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defaultCounter++;
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return defaultCounter != (NUM_LISTS * NUM_SIZES - 4); // -4 for 32x32
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}
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/* get address of default quantization matrix */
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const int32_t* ScalingList::getScalingListDefaultAddress(int sizeId, int listId) const
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{
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switch (sizeId)
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{
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case BLOCK_4x4:
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return quantTSDefault4x4;
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case BLOCK_8x8:
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return (listId < 3) ? quantIntraDefault8x8 : quantInterDefault8x8;
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case BLOCK_16x16:
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return (listId < 3) ? quantIntraDefault8x8 : quantInterDefault8x8;
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case BLOCK_32x32:
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return (listId < 1) ? quantIntraDefault8x8 : quantInterDefault8x8;
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default:
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break;
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}
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X265_CHECK(0, "invalid scaling list size\n");
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return NULL;
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}
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void ScalingList::processDefaultMarix(int sizeId, int listId)
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{
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memcpy(m_scalingListCoef[sizeId][listId], getScalingListDefaultAddress(sizeId, listId), sizeof(int) * X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[sizeId]));
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m_scalingListDC[sizeId][listId] = SCALING_LIST_DC;
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}
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void ScalingList::setDefaultScalingList()
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{
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for (int sizeId = 0; sizeId < NUM_SIZES; sizeId++)
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for (int listId = 0; listId < NUM_LISTS; listId++)
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processDefaultMarix(sizeId, listId);
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m_bEnabled = true;
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m_bDataPresent = false;
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}
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bool ScalingList::parseScalingList(const char* filename)
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{
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FILE *fp = fopen(filename, "r");
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if (!fp)
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{
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x265_log(NULL, X265_LOG_ERROR, "can't open scaling list file %s\n", filename);
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return true;
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}
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char line[1024];
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int32_t *src = NULL;
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for (int sizeIdc = 0; sizeIdc < NUM_SIZES; sizeIdc++)
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{
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int size = X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[sizeIdc]);
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for (int listIdc = 0; listIdc < NUM_LISTS; listIdc++)
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{
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src = m_scalingListCoef[sizeIdc][listIdc];
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fseek(fp, 0, 0);
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do
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{
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char *ret = fgets(line, 1024, fp);
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if (!ret || (!strstr(line, MatrixType[sizeIdc][listIdc]) && feof(fp)))
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{
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x265_log(NULL, X265_LOG_ERROR, "can't read matrix from %s\n", filename);
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return true;
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}
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}
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while (!strstr(line, MatrixType[sizeIdc][listIdc]));
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for (int i = 0; i < size; i++)
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{
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int data;
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if (fscanf(fp, "%d,", &data) != 1)
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{
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x265_log(NULL, X265_LOG_ERROR, "can't read matrix from %s\n", filename);
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return true;
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}
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src[i] = data;
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}
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// set DC value for default matrix check
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m_scalingListDC[sizeIdc][listIdc] = src[0];
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if (sizeIdc > BLOCK_8x8)
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{
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fseek(fp, 0, 0);
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do
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{
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char *ret = fgets(line, 1024, fp);
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if (!ret || (!strstr(line, MatrixType_DC[sizeIdc][listIdc]) && feof(fp)))
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{
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x265_log(NULL, X265_LOG_ERROR, "can't read DC from %s\n", filename);
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return true;
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}
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}
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while (!strstr(line, MatrixType_DC[sizeIdc][listIdc]));
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int data;
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if (fscanf(fp, "%d,", &data) != 1)
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{
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x265_log(NULL, X265_LOG_ERROR, "can't read matrix from %s\n", filename);
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return true;
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}
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// overwrite DC value when size of matrix is larger than 16x16
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m_scalingListDC[sizeIdc][listIdc] = data;
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}
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}
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}
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fclose(fp);
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m_bEnabled = true;
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m_bDataPresent = !checkDefaultScalingList();
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return false;
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}
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/** set quantized matrix coefficient for encode */
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void ScalingList::setupQuantMatrices()
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{
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for (int size = 0; size < NUM_SIZES; size++)
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{
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int width = 1 << (size + 2);
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int ratio = width / X265_MIN(MAX_MATRIX_SIZE_NUM, width);
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int stride = X265_MIN(MAX_MATRIX_SIZE_NUM, width);
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int count = s_numCoefPerSize[size];
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for (int list = 0; list < NUM_LISTS; list++)
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{
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int32_t *coeff = m_scalingListCoef[size][list];
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int32_t dc = m_scalingListDC[size][list];
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for (int rem = 0; rem < NUM_REM; rem++)
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{
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int32_t *quantCoeff = m_quantCoef[size][list][rem];
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int32_t *dequantCoeff = m_dequantCoef[size][list][rem];
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if (m_bEnabled)
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{
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processScalingListEnc(coeff, quantCoeff, s_quantScales[rem] << 4, width, width, ratio, stride, dc);
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processScalingListDec(coeff, dequantCoeff, s_invQuantScales[rem], width, width, ratio, stride, dc);
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}
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else
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{
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/* flat quant and dequant coefficients */
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for (int i = 0; i < count; i++)
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{
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quantCoeff[i] = s_quantScales[rem];
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dequantCoeff[i] = s_invQuantScales[rem];
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}
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}
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}
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}
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}
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}
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void ScalingList::processScalingListEnc(int32_t *coeff, int32_t *quantcoeff, int32_t quantScales, int height, int width,
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int ratio, int stride, int32_t dc)
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|
|
{
|
||
|
|
for (int j = 0; j < height; j++)
|
||
|
|
for (int i = 0; i < width; i++)
|
||
|
|
quantcoeff[j * width + i] = quantScales / coeff[stride * (j / ratio) + i / ratio];
|
||
|
|
|
||
|
|
if (ratio > 1)
|
||
|
|
quantcoeff[0] = quantScales / dc;
|
||
|
|
}
|
||
|
|
|
||
|
|
void ScalingList::processScalingListDec(int32_t *coeff, int32_t *dequantcoeff, int32_t invQuantScales, int height, int width,
|
||
|
|
int ratio, int stride, int32_t dc)
|
||
|
|
{
|
||
|
|
for (int j = 0; j < height; j++)
|
||
|
|
for (int i = 0; i < width; i++)
|
||
|
|
dequantcoeff[j * width + i] = invQuantScales * coeff[stride * (j / ratio) + i / ratio];
|
||
|
|
|
||
|
|
if (ratio > 1)
|
||
|
|
dequantcoeff[0] = invQuantScales * dc;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|