--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/x265/source/common/scalinglist.cpp	Wed Nov 16 11:16:33 2016 +0200
@@ -0,0 +1,379 @@
+/*****************************************************************************
+ * 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;
+}
+
+}