forked from mirror/libbpg
379 lines
12 KiB
C++
379 lines
12 KiB
C++
/*****************************************************************************
|
|
* Copyright (C) 2015 x265 project
|
|
*
|
|
* Authors: Steve Borho <steve@borho.org>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
|
|
*
|
|
* This program is also available under a commercial proprietary license.
|
|
* For more information, contact us at license @ x265.com.
|
|
*****************************************************************************/
|
|
|
|
#include "common.h"
|
|
#include "primitives.h"
|
|
#include "scalinglist.h"
|
|
|
|
namespace {
|
|
// file-anonymous namespace
|
|
|
|
/* Strings for scaling list file parsing */
|
|
const char MatrixType[4][6][20] =
|
|
{
|
|
{
|
|
"INTRA4X4_LUMA",
|
|
"INTRA4X4_CHROMAU",
|
|
"INTRA4X4_CHROMAV",
|
|
"INTER4X4_LUMA",
|
|
"INTER4X4_CHROMAU",
|
|
"INTER4X4_CHROMAV"
|
|
},
|
|
{
|
|
"INTRA8X8_LUMA",
|
|
"INTRA8X8_CHROMAU",
|
|
"INTRA8X8_CHROMAV",
|
|
"INTER8X8_LUMA",
|
|
"INTER8X8_CHROMAU",
|
|
"INTER8X8_CHROMAV"
|
|
},
|
|
{
|
|
"INTRA16X16_LUMA",
|
|
"INTRA16X16_CHROMAU",
|
|
"INTRA16X16_CHROMAV",
|
|
"INTER16X16_LUMA",
|
|
"INTER16X16_CHROMAU",
|
|
"INTER16X16_CHROMAV"
|
|
},
|
|
{
|
|
"INTRA32X32_LUMA",
|
|
"INTER32X32_LUMA",
|
|
},
|
|
};
|
|
const char MatrixType_DC[4][12][22] =
|
|
{
|
|
{
|
|
},
|
|
{
|
|
},
|
|
{
|
|
"INTRA16X16_LUMA_DC",
|
|
"INTRA16X16_CHROMAU_DC",
|
|
"INTRA16X16_CHROMAV_DC",
|
|
"INTER16X16_LUMA_DC",
|
|
"INTER16X16_CHROMAU_DC",
|
|
"INTER16X16_CHROMAV_DC"
|
|
},
|
|
{
|
|
"INTRA32X32_LUMA_DC",
|
|
"INTER32X32_LUMA_DC",
|
|
},
|
|
};
|
|
|
|
static int quantTSDefault4x4[16] =
|
|
{
|
|
16, 16, 16, 16,
|
|
16, 16, 16, 16,
|
|
16, 16, 16, 16,
|
|
16, 16, 16, 16
|
|
};
|
|
|
|
static int quantIntraDefault8x8[64] =
|
|
{
|
|
16, 16, 16, 16, 17, 18, 21, 24,
|
|
16, 16, 16, 16, 17, 19, 22, 25,
|
|
16, 16, 17, 18, 20, 22, 25, 29,
|
|
16, 16, 18, 21, 24, 27, 31, 36,
|
|
17, 17, 20, 24, 30, 35, 41, 47,
|
|
18, 19, 22, 27, 35, 44, 54, 65,
|
|
21, 22, 25, 31, 41, 54, 70, 88,
|
|
24, 25, 29, 36, 47, 65, 88, 115
|
|
};
|
|
|
|
static int quantInterDefault8x8[64] =
|
|
{
|
|
16, 16, 16, 16, 17, 18, 20, 24,
|
|
16, 16, 16, 17, 18, 20, 24, 25,
|
|
16, 16, 17, 18, 20, 24, 25, 28,
|
|
16, 17, 18, 20, 24, 25, 28, 33,
|
|
17, 18, 20, 24, 25, 28, 33, 41,
|
|
18, 20, 24, 25, 28, 33, 41, 54,
|
|
20, 24, 25, 28, 33, 41, 54, 71,
|
|
24, 25, 28, 33, 41, 54, 71, 91
|
|
};
|
|
|
|
}
|
|
|
|
namespace X265_NS {
|
|
// private namespace
|
|
|
|
const int ScalingList::s_numCoefPerSize[NUM_SIZES] = { 16, 64, 256, 1024 };
|
|
const int32_t ScalingList::s_quantScales[NUM_REM] = { 26214, 23302, 20560, 18396, 16384, 14564 };
|
|
const int32_t ScalingList::s_invQuantScales[NUM_REM] = { 40, 45, 51, 57, 64, 72 };
|
|
|
|
ScalingList::ScalingList()
|
|
{
|
|
memset(m_quantCoef, 0, sizeof(m_quantCoef));
|
|
memset(m_dequantCoef, 0, sizeof(m_dequantCoef));
|
|
memset(m_scalingListCoef, 0, sizeof(m_scalingListCoef));
|
|
}
|
|
|
|
bool ScalingList::init()
|
|
{
|
|
bool ok = true;
|
|
for (int sizeId = 0; sizeId < NUM_SIZES; sizeId++)
|
|
{
|
|
for (int listId = 0; listId < NUM_LISTS; listId++)
|
|
{
|
|
m_scalingListCoef[sizeId][listId] = X265_MALLOC(int32_t, X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[sizeId]));
|
|
ok &= !!m_scalingListCoef[sizeId][listId];
|
|
for (int rem = 0; rem < NUM_REM; rem++)
|
|
{
|
|
m_quantCoef[sizeId][listId][rem] = X265_MALLOC(int32_t, s_numCoefPerSize[sizeId]);
|
|
m_dequantCoef[sizeId][listId][rem] = X265_MALLOC(int32_t, s_numCoefPerSize[sizeId]);
|
|
ok &= m_quantCoef[sizeId][listId][rem] && m_dequantCoef[sizeId][listId][rem];
|
|
}
|
|
}
|
|
}
|
|
return ok;
|
|
}
|
|
|
|
ScalingList::~ScalingList()
|
|
{
|
|
for (int sizeId = 0; sizeId < NUM_SIZES; sizeId++)
|
|
{
|
|
for (int listId = 0; listId < NUM_LISTS; listId++)
|
|
{
|
|
X265_FREE(m_scalingListCoef[sizeId][listId]);
|
|
for (int rem = 0; rem < NUM_REM; rem++)
|
|
{
|
|
X265_FREE(m_quantCoef[sizeId][listId][rem]);
|
|
X265_FREE(m_dequantCoef[sizeId][listId][rem]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* returns predicted list index if a match is found, else -1 */
|
|
int ScalingList::checkPredMode(int size, int list) const
|
|
{
|
|
for (int predList = list; predList >= 0; predList--)
|
|
{
|
|
// check DC value
|
|
if (size < BLOCK_16x16 && m_scalingListDC[size][list] != m_scalingListDC[size][predList])
|
|
continue;
|
|
|
|
// check value of matrix
|
|
if (!memcmp(m_scalingListCoef[size][list],
|
|
list == predList ? getScalingListDefaultAddress(size, predList) : m_scalingListCoef[size][predList],
|
|
sizeof(int32_t) * X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[size])))
|
|
return predList;
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
/* check if use default quantization matrix
|
|
* returns true if default quantization matrix is used in all sizes */
|
|
bool ScalingList::checkDefaultScalingList() const
|
|
{
|
|
int defaultCounter = 0;
|
|
|
|
for (int s = 0; s < NUM_SIZES; s++)
|
|
for (int l = 0; l < NUM_LISTS; l++)
|
|
if (!memcmp(m_scalingListCoef[s][l], getScalingListDefaultAddress(s, l),
|
|
sizeof(int32_t) * X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[s])) &&
|
|
((s < BLOCK_16x16) || (m_scalingListDC[s][l] == 16)))
|
|
defaultCounter++;
|
|
|
|
return defaultCounter != (NUM_LISTS * NUM_SIZES - 4); // -4 for 32x32
|
|
}
|
|
|
|
/* get address of default quantization matrix */
|
|
const int32_t* ScalingList::getScalingListDefaultAddress(int sizeId, int listId) const
|
|
{
|
|
switch (sizeId)
|
|
{
|
|
case BLOCK_4x4:
|
|
return quantTSDefault4x4;
|
|
case BLOCK_8x8:
|
|
return (listId < 3) ? quantIntraDefault8x8 : quantInterDefault8x8;
|
|
case BLOCK_16x16:
|
|
return (listId < 3) ? quantIntraDefault8x8 : quantInterDefault8x8;
|
|
case BLOCK_32x32:
|
|
return (listId < 1) ? quantIntraDefault8x8 : quantInterDefault8x8;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
X265_CHECK(0, "invalid scaling list size\n");
|
|
return NULL;
|
|
}
|
|
|
|
void ScalingList::processDefaultMarix(int sizeId, int listId)
|
|
{
|
|
memcpy(m_scalingListCoef[sizeId][listId], getScalingListDefaultAddress(sizeId, listId), sizeof(int) * X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[sizeId]));
|
|
m_scalingListDC[sizeId][listId] = SCALING_LIST_DC;
|
|
}
|
|
|
|
void ScalingList::setDefaultScalingList()
|
|
{
|
|
for (int sizeId = 0; sizeId < NUM_SIZES; sizeId++)
|
|
for (int listId = 0; listId < NUM_LISTS; listId++)
|
|
processDefaultMarix(sizeId, listId);
|
|
m_bEnabled = true;
|
|
m_bDataPresent = false;
|
|
}
|
|
|
|
bool ScalingList::parseScalingList(const char* filename)
|
|
{
|
|
FILE *fp = fopen(filename, "r");
|
|
if (!fp)
|
|
{
|
|
x265_log(NULL, X265_LOG_ERROR, "can't open scaling list file %s\n", filename);
|
|
return true;
|
|
}
|
|
|
|
char line[1024];
|
|
int32_t *src = NULL;
|
|
|
|
for (int sizeIdc = 0; sizeIdc < NUM_SIZES; sizeIdc++)
|
|
{
|
|
int size = X265_MIN(MAX_MATRIX_COEF_NUM, s_numCoefPerSize[sizeIdc]);
|
|
for (int listIdc = 0; listIdc < NUM_LISTS; listIdc++)
|
|
{
|
|
src = m_scalingListCoef[sizeIdc][listIdc];
|
|
|
|
fseek(fp, 0, 0);
|
|
do
|
|
{
|
|
char *ret = fgets(line, 1024, fp);
|
|
if (!ret || (!strstr(line, MatrixType[sizeIdc][listIdc]) && feof(fp)))
|
|
{
|
|
x265_log(NULL, X265_LOG_ERROR, "can't read matrix from %s\n", filename);
|
|
return true;
|
|
}
|
|
}
|
|
while (!strstr(line, MatrixType[sizeIdc][listIdc]));
|
|
|
|
for (int i = 0; i < size; i++)
|
|
{
|
|
int data;
|
|
if (fscanf(fp, "%d,", &data) != 1)
|
|
{
|
|
x265_log(NULL, X265_LOG_ERROR, "can't read matrix from %s\n", filename);
|
|
return true;
|
|
}
|
|
src[i] = data;
|
|
}
|
|
|
|
// set DC value for default matrix check
|
|
m_scalingListDC[sizeIdc][listIdc] = src[0];
|
|
|
|
if (sizeIdc > BLOCK_8x8)
|
|
{
|
|
fseek(fp, 0, 0);
|
|
do
|
|
{
|
|
char *ret = fgets(line, 1024, fp);
|
|
if (!ret || (!strstr(line, MatrixType_DC[sizeIdc][listIdc]) && feof(fp)))
|
|
{
|
|
x265_log(NULL, X265_LOG_ERROR, "can't read DC from %s\n", filename);
|
|
return true;
|
|
}
|
|
}
|
|
while (!strstr(line, MatrixType_DC[sizeIdc][listIdc]));
|
|
|
|
int data;
|
|
if (fscanf(fp, "%d,", &data) != 1)
|
|
{
|
|
x265_log(NULL, X265_LOG_ERROR, "can't read matrix from %s\n", filename);
|
|
return true;
|
|
}
|
|
|
|
// overwrite DC value when size of matrix is larger than 16x16
|
|
m_scalingListDC[sizeIdc][listIdc] = data;
|
|
}
|
|
}
|
|
}
|
|
|
|
fclose(fp);
|
|
|
|
m_bEnabled = true;
|
|
m_bDataPresent = !checkDefaultScalingList();
|
|
|
|
return false;
|
|
}
|
|
|
|
/** set quantized matrix coefficient for encode */
|
|
void ScalingList::setupQuantMatrices()
|
|
{
|
|
for (int size = 0; size < NUM_SIZES; size++)
|
|
{
|
|
int width = 1 << (size + 2);
|
|
int ratio = width / X265_MIN(MAX_MATRIX_SIZE_NUM, width);
|
|
int stride = X265_MIN(MAX_MATRIX_SIZE_NUM, width);
|
|
int count = s_numCoefPerSize[size];
|
|
|
|
for (int list = 0; list < NUM_LISTS; list++)
|
|
{
|
|
int32_t *coeff = m_scalingListCoef[size][list];
|
|
int32_t dc = m_scalingListDC[size][list];
|
|
|
|
for (int rem = 0; rem < NUM_REM; rem++)
|
|
{
|
|
int32_t *quantCoeff = m_quantCoef[size][list][rem];
|
|
int32_t *dequantCoeff = m_dequantCoef[size][list][rem];
|
|
|
|
if (m_bEnabled)
|
|
{
|
|
processScalingListEnc(coeff, quantCoeff, s_quantScales[rem] << 4, width, width, ratio, stride, dc);
|
|
processScalingListDec(coeff, dequantCoeff, s_invQuantScales[rem], width, width, ratio, stride, dc);
|
|
}
|
|
else
|
|
{
|
|
/* flat quant and dequant coefficients */
|
|
for (int i = 0; i < count; i++)
|
|
{
|
|
quantCoeff[i] = s_quantScales[rem];
|
|
dequantCoeff[i] = s_invQuantScales[rem];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ScalingList::processScalingListEnc(int32_t *coeff, int32_t *quantcoeff, int32_t quantScales, 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++)
|
|
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;
|
|
}
|
|
|
|
}
|