* Real Audio 1.0 (14.4K)
* Copyright (c) 2003 the ffmpeg project
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * Libav 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <stdint.h>
#include "avcodec.h"
+#include "celp_filters.h"
+#include "mathops.h"
#include "ra144.h"
-#define DATABLOCK1 20 /* size of 14.4 input block in bytes */
-#define DATACHUNK1 1440 /* size of 14.4 input chunk in bytes */
-#define AUDIOBLOCK 160 /* size of output block in 16-bit words (320 bytes) */
-#define AUDIOBUFFER 12288 /* size of output buffer in 16-bit words (24576 bytes) */
-/* consts */
-#define NBLOCKS 4 /* number of segments within a block */
-#define BLOCKSIZE 40 /* (quarter) block size in 16-bit words (80 bytes) */
-#define HALFBLOCK 20 /* BLOCKSIZE/2 */
-#define BUFFERSIZE 146 /* for do_output */
-
-
-/* internal globals */
-typedef struct {
- unsigned int resetflag, val, oldval;
- unsigned int unpacked[28]; /* buffer for unpacked input */
- unsigned int *iptr; /* pointer to current input (from unpacked) */
- unsigned int gval;
- unsigned short *gsp;
- unsigned int gbuf1[8];
- unsigned short gbuf2[120];
- signed short output_buffer[40];
- unsigned int *decptr; /* decoder ptr */
- signed short *decsp;
-
- /* the swapped buffers */
- unsigned int swapb1a[10];
- unsigned int swapb2a[10];
- unsigned int swapb1b[10];
- unsigned int swapb2b[10];
- unsigned int *swapbuf1;
- unsigned int *swapbuf2;
- unsigned int *swapbuf1alt;
- unsigned int *swapbuf2alt;
-
- unsigned int buffer[5];
- unsigned short int buffer_2[148];
- unsigned short int buffer_a[40];
- unsigned short int buffer_b[40];
- unsigned short int buffer_c[40];
- unsigned short int buffer_d[40];
-
- unsigned short int work[50];
- unsigned short *sptr;
-
- int buffer1[10];
- int buffer2[10];
-
- signed short wavtable1[2304];
- unsigned short wavtable2[2304];
-} Real144_internal;
-
-static int ra144_decode_init(AVCodecContext * avctx)
-{
- Real144_internal *glob=avctx->priv_data;
+const int16_t ff_gain_val_tab[256][3] = {
+ { 541, 956, 768}, { 877, 581, 568}, { 675,1574, 635}, {1248,1464, 668},
+ {1246, 839, 1394}, {2560,1386, 991}, { 925, 687, 608}, {2208, 797, 1144},
+ { 535, 832, 799}, { 762, 605, 1154}, { 832,1122, 1003}, {1180, 687, 1176},
+ {1292, 901, 732}, {1656, 689, 896}, {1750,1248, 848}, {2284, 942, 1022},
+ { 824,1472, 643}, { 517, 765, 512}, { 562,1816, 1522}, { 694,1826, 2700},
+ { 704, 524, 672}, {1442, 757, 2232}, { 884, 551, 1266}, {2232,1007, 1692},
+ { 932, 746, 777}, {1132, 822, 926}, {1226, 771, 611}, {2948,1342, 1008},
+ {1302, 594, 1158}, {1602, 636, 1128}, {3408, 910, 1438}, {1996, 614, 575},
+ { 665, 935, 628}, { 631,1192, 829}, { 644, 926, 1052}, { 879, 988, 1226},
+ { 941,2768, 2772}, { 565,1344, 2304}, { 547, 628, 740}, { 639, 532, 1074},
+ { 955,1208, 598}, {1124,1160, 900}, {1206, 899, 1242}, { 746, 533, 624},
+ {1458,1028, 735}, {1706,1102, 692}, {1898,1018, 1004}, {2176, 988, 735},
+ {1578, 782, 1642}, { 897, 516, 754}, {2068, 702, 1656}, {2344, 818, 1526},
+ { 907, 652, 592}, {1056, 652, 642}, {2124,1416, 780}, {2664,1250, 727},
+ {1894, 727, 1108}, {2196, 657, 981}, {4840, 920, 1704}, {4992,1238, 983},
+ {2420, 909, 1094}, {2760, 935, 1032}, {2800, 612, 853}, {3068, 832, 574},
+ { 523,1796, 923}, { 722,1916, 1382}, {1226,1542, 928}, { 758, 757, 584},
+ { 512,1134, 577}, { 615,1276, 698}, { 574,2568, 2356}, { 993,2728, 3512},
+ { 539, 890, 913}, { 694, 928, 1088}, { 805, 600, 1360}, {2160, 951, 3128},
+ { 816, 950, 590}, { 955, 847, 811}, {1094, 883, 556}, {1304, 888, 604},
+ { 863,1170, 855}, {1023, 997, 1032}, { 932,1228, 1280}, { 627, 564, 573},
+ { 876, 900, 1448}, {1030, 857, 1792}, {1294, 953, 1758}, {1612, 854, 1714},
+ {1090,1166, 631}, {1314,1202, 751}, {1480, 905, 795}, {1682,1016, 568},
+ {1494,1178, 983}, { 878, 613, 526}, {1728,1446, 779}, {2136,1348, 774},
+ { 950, 649, 939}, {1180, 703, 899}, {1236, 527, 1158}, {1450, 647, 972},
+ {1282, 647, 707}, {1460, 663, 644}, {1614, 572, 578}, {3516,1222, 821},
+ {2668, 729, 1682}, {3128, 585, 1502}, {3208, 733, 976}, {6800, 871, 1416},
+ {3480, 743, 1408}, {3764, 899, 1170}, {3772, 632, 875}, {4092, 732, 638},
+ {3112, 753, 2620}, {3372, 945, 1890}, {3768, 969, 2288}, {2016, 559, 854},
+ {1736, 729, 787}, {1940, 686, 547}, {2140, 635, 674}, {4480,1272, 828},
+ {3976, 592, 1666}, {4384, 621, 1388}, {4400, 801, 955}, {4656, 522, 646},
+ {4848, 625, 1636}, {4984, 591, 874}, {5352, 535, 1001}, {11216,938, 1184},
+ { 925,3280, 1476}, { 735,1580, 1088}, {1150,1576, 674}, { 655, 783, 528},
+ { 527,2052, 1354}, { 782,1704, 1880}, { 578, 910, 1026}, { 692, 882, 1468},
+ { 586, 683, 715}, { 739, 609, 717}, { 778, 773, 697}, { 922, 785, 813},
+ { 766, 651, 984}, { 978, 596, 1030}, {1070, 757, 1080}, {1324, 687, 1178},
+ {1108,2144, 979}, { 723, 982, 690}, { 936, 956, 527}, {1180,1002, 547},
+ { 517,1306, 825}, { 832,1184, 974}, {1024, 957, 903}, {1262,1090, 906},
+ {1028, 720, 649}, {1192, 679, 694}, {2468,1480, 979}, {2844,1370, 877},
+ {1310, 835, 848}, {1508, 839, 698}, {1742,1030, 769}, {1910, 852, 573},
+ {1280, 859, 1174}, {1584, 863, 1108}, {1686, 708, 1364}, {1942, 768, 1104},
+ { 891, 536, 690}, {1016, 560, 663}, {2172, 870, 1348}, {2404, 999, 1170},
+ {1890, 966, 889}, {2116, 912, 777}, {2296,1020, 714}, {4872,1844, 932},
+ {2392, 778, 929}, {2604, 772, 744}, {2764, 957, 722}, {5832,1532, 984},
+ {2188, 519, 1264}, {2332, 532, 922}, {5064, 995, 2412}, {2708, 571, 874},
+ {2408, 545, 666}, {5016,1084, 875}, {5376, 983, 1196}, {5536, 979, 730},
+ {5344, 634, 1744}, {5688, 706, 1348}, {5912, 977, 1190}, {6072, 905, 763},
+ {6048, 582, 1526}, {11968,1013,1816}, {12864,937, 1900}, {12560,1086, 998},
+ {1998, 684, 1884}, {2504, 633, 1992}, {1252, 567, 835}, {1478, 571, 973},
+ {2620, 769, 1414}, {2808, 952, 1142}, {2908, 712, 1028}, {2976, 686, 741},
+ {1462, 552, 714}, {3296, 991, 1452}, {1590, 615, 544}, {3480,1150, 824},
+ {3212, 832, 923}, {3276, 839, 531}, {3548, 786, 852}, {3732, 764, 570},
+ {5728, 906, 2616}, {6272, 804, 2252}, {3096, 535, 876}, {3228, 598, 649},
+ {6536, 759, 1436}, {6648, 993, 846}, {6864, 567, 1210},{14016,1012, 1302},
+ {3408, 548, 1098}, {7160,1008, 1742}, {7136,1000, 1182}, {7480,1032, 836},
+ {7448, 612, 1552}, {7744, 614, 816}, {8384, 777, 1438}, {8784, 694, 786},
+ { 882,1508, 1068}, { 597, 837, 766}, {1270, 954, 1408}, { 803, 550, 798},
+ {1398,1308, 798}, {1848,1534, 738}, { 970, 675, 608}, {1264, 706, 684},
+ {1716, 767, 1126}, {2108, 765, 1404}, {2236, 924, 1003}, {2472,1048, 611},
+ { 999, 942, 963}, {1094, 857, 935}, {2936, 926, 1138}, {1934, 746, 551},
+ {3336, 633, 1762}, {3764, 701, 1454}, {1890, 564, 636}, {4096,1126, 793},
+ {3936, 556, 1140}, {3936, 540, 740}, {4216, 764, 874}, {8480,1328, 1014},
+ {2184, 515, 1042}, {4432, 934, 1344}, {4784, 945, 1112}, {5016,1062, 733},
+ {9216,1020, 2028}, {9968, 924, 1188}, {5424, 909, 1206}, {6512, 744, 1086}
+};
- memset(glob,0,sizeof(Real144_internal));
- glob->resetflag=1;
- glob->swapbuf1=glob->swapb1a;
- glob->swapbuf2=glob->swapb2a;
- glob->swapbuf1alt=glob->swapb1b;
- glob->swapbuf2alt=glob->swapb2b;
+const uint8_t ff_gain_exp_tab[256] = {
+ 15, 15, 15, 15, 15, 16, 14, 15, 14, 14, 14, 14, 14, 14, 14, 14,
+ 14, 13, 14, 14, 13, 14, 13, 14, 13, 13, 13, 14, 13, 13, 14, 13,
+ 13, 13, 13, 13, 14, 13, 12, 12, 13, 13, 13, 12, 13, 13, 13, 13,
+ 13, 12, 13, 13, 12, 12, 13, 13, 13, 13, 14, 14, 13, 13, 13, 13,
+ 13, 13, 13, 12, 12, 12, 13, 13, 12, 12, 12, 13, 12, 12, 12, 12,
+ 12, 12, 12, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 12, 12,
+ 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 14, 13, 13, 13, 13,
+ 13, 13, 13, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14,
+ 13, 12, 12, 11, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+ 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 11, 11, 11, 11,
+ 12, 12, 12, 12, 11, 11, 12, 12, 12, 12, 12, 13, 12, 12, 12, 13,
+ 12, 12, 13, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14,
+ 12, 12, 11, 11, 12, 12, 12, 12, 11, 12, 11, 12, 12, 12, 12, 12,
+ 13, 13, 12, 12, 13, 13, 13, 14, 12, 13, 13, 13, 13, 13, 13, 13,
+ 11, 10, 11, 10, 11, 11, 10, 10, 11, 11, 11, 11, 10, 9, 11, 10,
+ 12, 12, 11, 12, 12, 12, 12, 13, 11, 12, 12, 12, 13, 13, 12, 12
+};
- memcpy(glob->wavtable1,wavtable1,sizeof(wavtable1));
- memcpy(glob->wavtable2,wavtable2,sizeof(wavtable2));
+const int8_t ff_cb1_vects[128][40]={
+ {
+ 38, -4, 15, -4, 14, -13, 12, -11, -2, -6,
+ -6, -11, -45, -16, -11, -13, -7, 6, -12, 4,
+ -20, 3, -16, 12, -1, 12, 46, 24, 0, 33,
+ -3, 9, -12, -12, -8, -7, 17, -6, 0, -2,
+ }, {
+ 60, -16, 3, -22, 10, -32, 0, -28, -17, -18,
+ -3, -25, -37, -23, -10, 3, 2, 3, 0, 3,
+ -14, 0, -14, -1, 0, 2, 32, 9, -1, 25,
+ 7, 13, -5, 13, 8, 1, 2, 8, -10, 6,
+ }, {
+ 27, -12, 28, -2, 6, -7, 15, 9, -11, 1,
+ -13, -11, -40, 4, -29, -14, -19, -5, -23, -8,
+ -30, -13, -17, 0, -14, 12, 34, 20, -2, 25,
+ 2, -16, -4, -12, 15, 16, 29, 7, 24, 10,
+ }, {
+ 49, -24, 16, -20, 2, -26, 2, -7, -25, -10,
+ -11, -25, -32, -3, -27, 2, -8, -8, -11, -9,
+ -24, -17, -16, -14, -13, 2, 20, 5, -4, 17,
+ 14, -12, 3, 13, 33, 25, 14, 23, 15, 19,
+ }, {
+ 46, -6, 21, 8, -2, -16, -5, -8, -11, 4,
+ 8, 15, -24, 4, -2, -26, -3, -16, -16, -14,
+ -9, -2, -1, 4, 19, 7, 36, 17, 9, 13,
+ 0, 31, -5, -12, 7, -8, 11, -15, -13, -4,
+ }, {
+ 68, -18, 9, -9, -6, -35, -18, -25, -26, -7,
+ 10, 1, -16, -3, -1, -9, 6, -19, -4, -15,
+ -4, -6, 0, -8, 20, -2, 23, 2, 7, 5,
+ 12, 35, 1, 13, 24, 0, -3, 0, -22, 4,
+ }, {
+ 35, -14, 34, 10, -10, -10, -1, 12, -20, 12,
+ 0, 15, -18, 24, -20, -27, -14, -28, -27, -27,
+ -20, -19, -2, -8, 5, 7, 25, 13, 5, 5,
+ 6, 5, 2, -12, 31, 15, 23, -1, 12, 8,
+ }, {
+ 57, -26, 22, -7, -14, -28, -14, -3, -35, 0,
+ 3, 1, -11, 16, -18, -10, -4, -31, -15, -28,
+ -14, -23, -1, -21, 7, -2, 11, -1, 3, -1,
+ 18, 9, 10, 13, 49, 24, 8, 14, 2, 16,
+ }, {
+ 25, 15, 22, 11, 18, 4, 15, -22, 8, -2,
+ -17, -9, -48, -20, -30, -17, -16, 11, -1, 16,
+ 2, 10, -5, 26, -2, -4, 22, 0, 2, 10,
+ -6, 13, -14, 10, -23, 0, 10, -2, 1, 0,
+ }, {
+ 47, 3, 11, -6, 15, -13, 2, -38, -6, -13,
+ -15, -22, -40, -28, -28, 0, -5, 8, 10, 15,
+ 7, 7, -4, 13, -1, -14, 9, -14, 0, 2,
+ 4, 18, -7, 36, -6, 8, -3, 13, -7, 8,
+ }, {
+ 14, 7, 36, 13, 10, 10, 18, 0, 0, 5,
+ -25, -8, -43, 0, -48, -18, -27, 0, -12, 3,
+ -7, -6, -7, 13, -15, -5, 11, -3, 0, 2,
+ 0, -12, -6, 10, 0, 23, 22, 11, 26, 12,
+ }, {
+ 36, -5, 24, -4, 7, -7, 6, -17, -14, -5,
+ -22, -22, -35, -8, -46, -1, -17, -3, 0, 2,
+ -2, -10, -5, 0, -14, -15, -2, -18, -2, -4,
+ 11, -7, 1, 36, 18, 32, 7, 27, 17, 20,
+ }, {
+ 33, 13, 29, 24, 1, 1, -2, -18, 0, 9,
+ -3, 17, -27, 0, -21, -30, -12, -11, -5, -2,
+ 12, 4, 9, 19, 18, -9, 13, -6, 11, -8,
+ -2, 35, -8, 10, -7, -1, 4, -11, -10, -2,
+ }, {
+ 55, 1, 17, 6, -1, -16, -15, -35, -15, -2,
+ 0, 4, -19, -8, -20, -13, -1, -14, 7, -3,
+ 18, 0, 10, 5, 19, -19, 0, -21, 8, -16,
+ 9, 39, 0, 36, 10, 7, -9, 4, -20, 5,
+ }, {
+ 22, 5, 42, 26, -6, 8, 1, 2, -9, 17,
+ -10, 18, -21, 19, -39, -31, -23, -23, -16, -15,
+ 2, -12, 7, 6, 5, -9, 1, -10, 7, -16,
+ 4, 9, 0, 10, 17, 22, 16, 2, 14, 9,
+ }, {
+ 44, -6, 30, 8, -9, -10, -11, -14, -23, 5,
+ -8, 4, -14, 12, -37, -14, -12, -26, -4, -16,
+ 8, -16, 9, -7, 6, -19, -12, -25, 5, -24,
+ 15, 13, 8, 36, 34, 31, 1, 18, 4, 18,
+ }, {
+ -3, -5, -9, -7, 15, -1, 5, 13, 2, 12,
+ 5, 2, -21, -23, -2, -16, 0, 5, -6, 13,
+ -23, 3, -32, 10, -15, 8, 44, 28, 9, 37,
+ -2, 13, -9, -15, -12, -27, -7, -12, 0, -11,
+ }, {
+ 18, -17, -21, -25, 11, -19, -6, -3, -11, 0,
+ 7, -11, -13, -31, -1, 0, 9, 1, 5, 12,
+ -18, 0, -31, -2, -13, -1, 30, 14, 7, 29,
+ 9, 18, -1, 10, 4, -18, -22, 3, -10, -2,
+ }, {
+ -13, -13, 3, -5, 7, 4, 9, 34, -5, 20,
+ -2, 3, -16, -3, -20, -17, -11, -7, -17, 0,
+ -34, -13, -33, -2, -28, 8, 32, 24, 5, 29,
+ 3, -12, 0, -15, 11, -3, 3, 2, 24, 1,
+ }, {
+ 8, -25, -8, -23, 3, -13, -3, 17, -20, 8,
+ 0, -10, -8, -11, -18, 0, -1, -10, -5, 0,
+ -28, -17, -32, -15, -26, -1, 19, 9, 3, 21,
+ 15, -7, 6, 9, 29, 5, -10, 17, 15, 9,
+ }, {
+ 4, -6, -3, 5, -1, -4, -11, 16, -6, 23,
+ 19, 29, 0, -3, 6, -30, 3, -17, -10, -5,
+ -13, -2, -17, 3, 5, 3, 35, 21, 17, 17,
+ 2, 35, -2, -15, 3, -28, -13, -21, -13, -13,
+ }, {
+ 26, -19, -15, -12, -5, -22, -24, 0, -21, 12,
+ 21, 15, 8, -11, 7, -12, 14, -20, 2, -6,
+ -7, -6, -16, -9, 6, -5, 21, 7, 15, 10,
+ 13, 39, 5, 10, 20, -19, -28, -5, -22, -5,
+ }, {
+ -5, -15, 9, 7, -9, 2, -8, 37, -14, 31,
+ 11, 29, 5, 16, -11, -30, -7, -29, -21, -18,
+ -23, -19, -18, -9, -7, 3, 23, 17, 14, 9,
+ 8, 9, 6, -15, 27, -4, -2, -6, 12, -1,
+ }, {
+ 16, -27, -2, -10, -13, -16, -20, 20, -29, 20,
+ 14, 16, 13, 8, -9, -13, 2, -33, -9, -19,
+ -17, -23, -17, -22, -6, -6, 9, 2, 12, 2,
+ 20, 13, 13, 10, 45, 4, -16, 8, 2, 7,
+ }, {
+ -16, 14, -2, 8, 20, 17, 9, 2, 14, 16,
+ -6, 5, -24, -28, -21, -20, -8, 9, 4, 25,
+ -1, 11, -22, 24, -15, -8, 21, 5, 11, 14,
+ -5, 18, -11, 7, -27, -20, -14, -7, 1, -9,
+ }, {
+ 6, 2, -14, -9, 16, -1, -3, -14, 0, 5,
+ -3, -8, -16, -36, -19, -3, 1, 6, 17, 24,
+ 4, 7, -21, 11, -14, -18, 7, -9, 9, 7,
+ 6, 22, -3, 33, -10, -11, -28, 7, -7, 0,
+ }, {
+ -26, 6, 11, 10, 12, 23, 12, 23, 5, 24,
+ -13, 5, -19, -8, -38, -21, -20, -2, -6, 12,
+ -11, -5, -23, 11, -29, -9, 9, 0, 7, 6,
+ 1, -7, -2, 7, -3, 3, -2, 6, 27, 3,
+ }, {
+ -4, -6, 0, -7, 8, 4, 0, 6, -9, 13,
+ -11, -7, -11, -15, -37, -4, -9, -5, 5, 11,
+ -5, -9, -22, -1, -27, -18, -4, -14, 5, 0,
+ 12, -3, 4, 32, 14, 12, -17, 22, 17, 11,
+ }, {
+ -8, 12, 3, 21, 3, 14, -8, 5, 4, 28,
+ 7, 32, -2, -8, -12, -34, -4, -12, 1, 6,
+ 9, 4, -7, 17, 4, -13, 11, -1, 19, -4,
+ 0, 39, -4, 7, -11, -21, -20, -16, -10, -11,
+ }, {
+ 13, 0, -8, 3, 0, -4, -21, -11, -9, 16,
+ 10, 18, 5, -16, -10, -16, 5, -15, 13, 5,
+ 15, 1, -6, 4, 6, -23, -2, -16, 17, -12,
+ 10, 44, 3, 33, 6, -12, -34, -1, -20, -3,
+ }, {
+ -18, 4, 17, 23, -4, 20, -4, 26, -3, 36,
+ 0, 32, 2, 12, -29, -34, -16, -24, -10, -6,
+ 0, -12, -8, 4, -8, -13, 0, -6, 16, -12,
+ 5, 13, 3, 7, 13, 3, -8, -2, 14, 0,
+ }, {
+ 3, -7, 5, 5, -8, 2, -17, 9, -18, 24,
+ 2, 19, 10, 4, -28, -17, -5, -28, 2, -7,
+ 4, -15, -7, -8, -6, -23, -13, -21, 14, -20,
+ 17, 18, 11, 33, 30, 11, -23, 13, 5, 9,
+ }, {
+ 60, 10, 7, -1, 9, -8, 6, -13, 2, -15,
+ -1, -10, -13, -11, 15, 0, 6, 9, -1, 0,
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+ -4, -7, 21, -11, 14, 18, -7, 9, -9, -7,
+ -6, -22, 3, -33, 10, 11, 28, -7, 7, 0,
+ }, {
+ 16, -14, 2, -8, -20, -17, -9, -2, -14, -16,
+ 6, -5, 24, 28, 21, 20, 8, -9, -4, -25,
+ 1, -11, 22, -24, 15, 8, -21, -5, -11, -14,
+ 5, -18, 11, -7, 27, 20, 14, 7, -1, 9,
+ }, {
+ -16, 27, 2, 10, 13, 16, 20, -20, 29, -20,
+ -14, -16, -13, -8, 9, 13, -2, 33, 9, 19,
+ 17, 23, 17, 22, 6, 6, -9, -2, -12, -2,
+ -20, -13, -13, -10, -45, -4, 16, -8, -2, -7,
+ }, {
+ 5, 15, -9, -7, 9, -2, 8, -37, 14, -31,
+ -11, -29, -5, -16, 11, 30, 7, 29, 21, 18,
+ 23, 19, 18, 9, 7, -3, -23, -17, -14, -9,
+ -8, -9, -6, 15, -27, 4, 2, 6, -12, 1,
+ }, {
+ -26, 19, 15, 12, 5, 22, 24, 0, 21, -12,
+ -21, -15, -8, 11, -7, 12, -14, 20, -2, 6,
+ 7, 6, 16, 9, -6, 5, -21, -7, -15, -10,
+ -13, -39, -5, -10, -20, 19, 28, 5, 22, 5,
+ }, {
+ -4, 6, 3, -5, 1, 4, 11, -16, 6, -23,
+ -19, -29, 0, 3, -6, 30, -3, 17, 10, 5,
+ 13, 2, 17, -3, -5, -3, -35, -21, -17, -17,
+ -2, -35, 2, 15, -3, 28, 13, 21, 13, 13,
+ }, {
+ -8, 25, 8, 23, -3, 13, 3, -17, 20, -8,
+ 0, 10, 8, 11, 18, 0, 1, 10, 5, 0,
+ 28, 17, 32, 15, 26, 1, -19, -9, -3, -21,
+ -15, 7, -6, -9, -29, -5, 10, -17, -15, -9,
+ }, {
+ 13, 13, -3, 5, -7, -4, -9, -34, 5, -20,
+ 2, -3, 16, 3, 20, 17, 11, 7, 17, 0,
+ 34, 13, 33, 2, 28, -8, -32, -24, -5, -29,
+ -3, 12, 0, 15, -11, 3, -3, -2, -24, -1,
+ }, {
+ -18, 17, 21, 25, -11, 19, 6, 3, 11, 0,
+ -7, 11, 13, 31, 1, 0, -9, -1, -5, -12,
+ 18, 0, 31, 2, 13, 1, -30, -14, -7, -29,
+ -9, -18, 1, -10, -4, 18, 22, -3, 10, 2,
+ }, {
+ 3, 5, 9, 7, -15, 1, -5, -13, -2, -12,
+ -5, -2, 21, 23, 2, 16, 0, -5, 6, -13,
+ 23, -3, 32, -10, 15, -8, -44, -28, -9, -37,
+ 2, -13, 9, 15, 12, 27, 7, 12, 0, 11,
+ }, {
+ -44, 6, -30, -8, 9, 10, 11, 14, 23, -5,
+ 8, -4, 14, -12, 37, 14, 12, 26, 4, 16,
+ -8, 16, -9, 7, -6, 19, 12, 25, -5, 24,
+ -15, -13, -8, -36, -34, -31, -1, -18, -4, -18,
+ }, {
+ -22, -5, -42, -26, 6, -8, -1, -2, 9, -17,
+ 10, -18, 21, -19, 39, 31, 23, 23, 16, 15,
+ -2, 12, -7, -6, -5, 9, -1, 10, -7, 16,
+ -4, -9, 0, -10, -17, -22, -16, -2, -14, -9,
+ }, {
+ -55, -1, -17, -6, 1, 16, 15, 35, 15, 2,
+ 0, -4, 19, 8, 20, 13, 1, 14, -7, 3,
+ -18, 0, -10, -5, -19, 19, 0, 21, -8, 16,
+ -9, -39, 0, -36, -10, -7, 9, -4, 20, -5,
+ }, {
+ -33, -13, -29, -24, -1, -1, 2, 18, 0, -9,
+ 3, -17, 27, 0, 21, 30, 12, 11, 5, 2,
+ -12, -4, -9, -19, -18, 9, -13, 6, -11, 8,
+ 2, -35, 8, -10, 7, 1, -4, 11, 10, 2,
+ }, {
+ -36, 5, -24, 4, -7, 7, -6, 17, 14, 5,
+ 22, 22, 35, 8, 46, 1, 17, 3, 0, -2,
+ 2, 10, 5, 0, 14, 15, 2, 18, 2, 4,
+ -11, 7, -1, -36, -18, -32, -7, -27, -17, -20,
+ }, {
+ -14, -7, -36, -13, -10, -10, -18, 0, 0, -5,
+ 25, 8, 43, 0, 48, 18, 27, 0, 12, -3,
+ 7, 6, 7, -13, 15, 5, -11, 3, 0, -2,
+ 0, 12, 6, -10, 0, -23, -22, -11, -26, -12,
+ }, {
+ -47, -3, -11, 6, -15, 13, -2, 38, 6, 13,
+ 15, 22, 40, 28, 28, 0, 5, -8, -10, -15,
+ -7, -7, 4, -13, 1, 14, -9, 14, 0, -2,
+ -4, -18, 7, -36, 6, -8, 3, -13, 7, -8,
+ }, {
+ -25, -15, -22, -11, -18, -4, -15, 22, -8, 2,
+ 17, 9, 48, 20, 30, 17, 16, -11, 1, -16,
+ -2, -10, 5, -26, 2, 4, -22, 0, -2, -10,
+ 6, -13, 14, -10, 23, 0, -10, 2, -1, 0,
+ }, {
+ -57, 26, -22, 7, 14, 28, 14, 3, 35, 0,
+ -3, -1, 11, -16, 18, 10, 4, 31, 15, 28,
+ 14, 23, 1, 21, -7, 2, -11, 1, -3, 1,
+ -18, -9, -10, -13, -49, -24, -8, -14, -2, -16,
+ }, {
+ -35, 14, -34, -10, 10, 10, 1, -12, 20, -12,
+ 0, -15, 18, -24, 20, 27, 14, 28, 27, 27,
+ 20, 19, 2, 8, -5, -7, -25, -13, -5, -5,
+ -6, -5, -2, 12, -31, -15, -23, 1, -12, -8,
+ }, {
+ -68, 18, -9, 9, 6, 35, 18, 25, 26, 7,
+ -10, -1, 16, 3, 1, 9, -6, 19, 4, 15,
+ 4, 6, 0, 8, -20, 2, -23, -2, -7, -5,
+ -12, -35, -1, -13, -24, 0, 3, 0, 22, -4,
+ }, {
+ -46, 6, -21, -8, 2, 16, 5, 8, 11, -4,
+ -8, -15, 24, -4, 2, 26, 3, 16, 16, 14,
+ 9, 2, 1, -4, -19, -7, -36, -17, -9, -13,
+ 0, -31, 5, 12, -7, 8, -11, 15, 13, 4,
+ }, {
+ -49, 24, -16, 20, -2, 26, -2, 7, 25, 10,
+ 11, 25, 32, 3, 27, -2, 8, 8, 11, 9,
+ 24, 17, 16, 14, 13, -2, -20, -5, 4, -17,
+ -14, 12, -3, -13, -33, -25, -14, -23, -15, -19,
+ }, {
+ -27, 12, -28, 2, -6, 7, -15, -9, 11, -1,
+ 13, 11, 40, -4, 29, 14, 19, 5, 23, 8,
+ 30, 13, 17, 0, 14, -12, -34, -20, 2, -25,
+ -2, 16, 4, 12, -15, -16, -29, -7, -24, -10,
+ }, {
+ -60, 16, -3, 22, -10, 32, 0, 28, 17, 18,
+ 3, 25, 37, 23, 10, -3, -2, -3, 0, -3,
+ 14, 0, 14, 1, 0, -2, -32, -9, 1, -25,
+ -7, -13, 5, -13, -8, -1, -2, -8, 10, -6,
+ }, {
+ -38, 4, -15, 4, -14, 13, -12, 11, 2, 6,
+ 6, 11, 45, 16, 11, 13, 7, -6, 12, -4,
+ 20, -3, 16, -12, 1, -12, -46, -24, 0, -33,
+ 3, -9, 12, 12, 8, 7, -17, 6, 0, 2
+ }
+};
- return 0;
-}
+const int8_t ff_cb2_vects[128][40]={
+ {
+ 73, -32, -60, -15, -26, 59, 2, -33, 30, -10,
+ -3, -17, 8, 30, -1, -26, -4, -22, 10, 16,
+ -36, -5, -11, 56, 37, 6, -10, -5, -13, -3,
+ 6, -5, 11, 4, -19, -5, -16, 41, 24, 13,
+ }, {
+ 4, -11, -37, 23, -5, 46, -2, -29, -5, -39,
+ -21, -9, 0, 49, 12, -9, -16, -26, 22, 15,
+ -45, -20, -5, 40, 22, 17, -26, 31, -14, 2,
+ -14, 10, 30, 20, -27, -9, -39, 39, 18, 5,
+ }, {
+ 34, -25, -48, -28, -11, 34, -2, -41, 9, -7,
+ -17, 21, 20, 24, -17, -33, 0, -24, 10, 42,
+ 3, -5, 10, 42, 11, 8, -3, 3, 16, 9,
+ 22, -2, 0, -33, -10, 18, 7, 58, 10, 28,
+ }, {
+ -34, -4, -25, 10, 9, 21, -7, -36, -26, -36,
+ -35, 28, 12, 42, -3, -16, -12, -28, 21, 42,
+ -5, -21, 16, 26, -4, 19, -19, 39, 15, 15,
+ 1, 13, 19, -17, -17, 14, -15, 55, 4, 19,
+ }, {
+ 28, -20, -51, -14, -6, 7, 0, -26, 27, -4,
+ 18, -40, -6, 16, -1, -15, 0, -55, -5, -16,
+ -19, 14, -3, 49, 14, 1, -22, -30, -12, 0,
+ 24, 15, 9, -17, -45, -29, 4, 28, 51, 35,
+ }, {
+ -40, 0, -28, 24, 14, -5, -4, -21, -7, -33,
+ 0, -32, -15, 35, 12, 1, -11, -58, 5, -16,
+ -28, 0, 1, 33, 0, 11, -39, 5, -14, 6,
+ 3, 31, 28, -1, -53, -33, -19, 25, 46, 26,
+ }, {
+ -11, -14, -39, -27, 9, -17, -4, -33, 6, 0,
+ 4, -1, 5, 10, -17, -22, 5, -57, -5, 9,
+ 20, 13, 18, 35, -11, 3, -16, -22, 17, 13,
+ 40, 19, -1, -55, -35, -5, 27, 44, 37, 49,
+ }, {
+ -80, 6, -16, 11, 30, -30, -9, -28, -28, -29,
+ -13, 6, -2, 28, -3, -5, -7, -60, 5, 9,
+ 11, -1, 24, 19, -27, 13, -32, 13, 15, 19,
+ 19, 35, 17, -39, -43, -9, 4, 42, 32, 41,
+ }, {
+ 78, -21, -43, 4, -38, 17, 17, -5, 55, 24,
+ -15, -36, 14, 4, 24, -24, 12, 5, 17, 31,
+ -54, -5, -2, 27, 43, -12, 2, 9, -9, -15,
+ 22, -3, 28, 21, -20, 3, 20, 28, 9, -5,
+ }, {
+ 9, -1, -20, 43, -17, 3, 12, 0, 20, -4,
+ -33, -29, 6, 22, 38, -7, 0, 1, 29, 30,
+ -63, -21, 3, 11, 27, -1, -14, 45, -10, -9,
+ 1, 12, 47, 37, -28, 0, -2, 26, 4, -13,
+ }, {
+ 39, -14, -30, -8, -22, -8, 12, -12, 34, 27,
+ -29, 2, 26, -2, 8, -31, 16, 3, 17, 57,
+ -14, -6, 19, 13, 16, -10, 8, 17, 20, -2,
+ 38, 0, 17, -16, -11, 27, 44, 45, -4, 8,
+ }, {
+ -29, 5, -7, 30, -1, -21, 7, -7, 0, 0,
+ -47, 9, 18, 15, 22, -14, 4, 0, 28, 57,
+ -23, -21, 25, -2, 1, 0, -7, 53, 19, 3,
+ 17, 15, 36, 0, -19, 24, 21, 43, -9, 0,
+ }, {
+ 33, -10, -34, 5, -17, -35, 15, 1, 53, 30,
+ 6, -59, 0, -10, 24, -13, 17, -27, 1, -1,
+ -37, 13, 4, 20, 20, -18, -10, -16, -8, -11,
+ 39, 18, 26, 0, -46, -20, 41, 15, 37, 15,
+ }, {
+ -35, 10, -11, 44, 3, -48, 10, 6, 17, 2,
+ -11, -51, -8, 8, 38, 3, 4, -31, 12, -2,
+ -46, -1, 10, 4, 5, -7, -26, 19, -10, -5,
+ 18, 34, 45, 15, -54, -24, 18, 13, 31, 7,
+ }, {
+ -5, -3, -21, -7, -2, -60, 10, -5, 32, 34,
+ -7, -20, 11, -16, 8, -20, 21, -29, 1, 24,
+ 2, 13, 27, 6, -5, -15, -3, -8, 21, 1,
+ 55, 21, 15, -38, -37, 3, 65, 32, 23, 30,
+ }, {
+ -74, 17, 0, 31, 18, -73, 5, 0, -3, 5,
+ -25, -12, 3, 1, 22, -3, 9, -33, 12, 24,
+ -6, -2, 33, -9, -21, -5, -20, 27, 19, 7,
+ 34, 37, 34, -22, -44, 0, 41, 29, 17, 21,
+ }, {
+ 76, -35, -31, -28, -49, 43, -40, 0, 29, -14,
+ 8, 5, 10, 18, -26, -46, 0, 7, 6, 3,
+ -25, -7, -2, 40, 28, 14, 18, -3, -27, -28,
+ -8, -45, -13, 34, -13, -27, -15, 31, 12, 3,
+ }, {
+ 7, -15, -9, 9, -28, 29, -45, 5, -6, -43,
+ -9, 12, 2, 36, -12, -30, -11, 3, 17, 3,
+ -34, -22, 3, 24, 12, 24, 2, 32, -28, -22,
+ -29, -29, 5, 50, -21, -31, -38, 29, 7, -5,
+ }, {
+ 36, -29, -19, -41, -34, 18, -45, -6, 8, -10,
+ -5, 43, 23, 11, -42, -53, 5, 5, 6, 30,
+ 14, -8, 20, 26, 1, 16, 25, 4, 3, -15,
+ 7, -41, -23, -3, -4, -3, 8, 48, -1, 17,
+ }, {
+ -32, -8, 3, -2, -13, 4, -50, -1, -27, -39,
+ -23, 51, 15, 30, -27, -37, -7, 1, 17, 29,
+ 5, -23, 25, 10, -14, 26, 8, 41, 1, -9,
+ -13, -26, -5, 12, -12, -7, -14, 45, -6, 9,
+ }, {
+ 31, -24, -23, -27, -29, -9, -43, 8, 26, -7,
+ 30, -17, -4, 3, -26, -35, 5, -24, -10, -28,
+ -9, 12, 5, 33, 5, 8, 5, -29, -26, -24,
+ 9, -23, -14, 12, -39, -52, 5, 18, 39, 24,
+ }, {
+ -37, -3, 0, 10, -7, -22, -48, 12, -8, -36,
+ 12, -9, -12, 22, -12, -19, -6, -28, 0, -29,
+ -18, -3, 11, 17, -10, 18, -10, 7, -27, -18,
+ -11, -7, 3, 28, -47, -55, -18, 15, 34, 16,
+ }, {
+ -8, -17, -10, -40, -13, -34, -47, 0, 5, -4,
+ 16, 21, 8, -2, -42, -43, 10, -26, -10, -2,
+ 31, 11, 27, 19, -21, 10, 12, -20, 3, -11,
+ 25, -20, -25, -25, -29, -28, 28, 34, 25, 38,
+ }, {
+ -77, 2, 11, -1, 7, -47, -52, 5, -29, -33,
+ -1, 28, 0, 15, -28, -26, -2, -30, 0, -2,
+ 22, -4, 33, 3, -36, 21, -3, 15, 2, -5,
+ 4, -4, -6, -9, -37, -31, 5, 32, 20, 30,
+ }, {
+ 81, -25, -14, -8, -61, 0, -25, 28, 54, 20,
+ -3, -14, 17, -8, 0, -44, 16, 35, 13, 18,
+ -43, -7, 6, 11, 33, -4, 30, 11, -22, -40,
+ 6, -43, 3, 50, -14, -18, 22, 18, -1, -16,
+ }, {
+ 12, -4, 8, 29, -39, -12, -30, 33, 19, -8,
+ -21, -6, 8, 9, 13, -28, 4, 31, 24, 18,
+ -52, -23, 12, -4, 18, 5, 14, 47, -24, -34,
+ -14, -27, 22, 66, -22, -22, -1, 16, -6, -24,
+ }, {
+ 41, -18, -2, -21, -45, -24, -30, 21, 33, 24,
+ -17, 24, 29, -15, -16, -51, 21, 33, 13, 45,
+ -3, -8, 28, -2, 7, -2, 37, 19, 7, -27,
+ 22, -39, -7, 12, -5, 5, 45, 35, -15, -1,
+ }, {
+ -27, 1, 20, 17, -24, -38, -35, 26, -1, -4,
+ -35, 32, 21, 3, -2, -35, 8, 29, 24, 44,
+ -12, -24, 34, -18, -8, 7, 21, 55, 5, -21,
+ 2, -23, 11, 28, -13, 1, 22, 33, -21, -10,
+ }, {
+ 36, -13, -5, -7, -40, -51, -28, 36, 52, 27,
+ 18, -36, 2, -22, 0, -33, 21, 2, -3, -13,
+ -26, 11, 14, 4, 10, -10, 18, -14, -22, -36,
+ 24, -21, 1, 28, -40, -42, 42, 5, 25, 5,
+ }, {
+ -32, 6, 17, 31, -19, -65, -33, 41, 16, -1,
+ 0, -29, -6, -4, 13, -17, 9, -1, 8, -14,
+ -35, -3, 19, -11, -4, 0, 1, 21, -23, -30,
+ 3, -5, 20, 44, -48, -46, 19, 3, 20, -3,
+ }, {
+ -3, -7, 6, -20, -25, -77, -32, 29, 31, 30,
+ 4, 2, 14, -29, -16, -40, 26, 0, -3, 12,
+ 13, 10, 36, -9, -15, -8, 24, -6, 7, -22,
+ 40, -17, -8, -9, -31, -18, 66, 22, 11, 19,
+ }, {
+ -72, 13, 29, 18, -4, -90, -37, 34, -4, 1,
+ -13, 9, 6, -11, -2, -24, 13, -3, 7, 11,
+ 4, -4, 42, -25, -31, 1, 8, 29, 6, -17,
+ 19, -2, 10, 6, -38, -22, 42, 19, 6, 11,
+ }, {
+ 116, -20, -68, -30, -28, 83, 28, -18, 32, -22,
+ -13, -21, 5, 28, 5, -7, -24, -8, -22, 17,
+ -23, 30, -25, 45, 15, -9, -11, -18, 22, -10,
+ 4, -2, 19, -12, 23, 3, -43, 2, 12, -4,
+ }, {
+ 47, 0, -45, 7, -7, 69, 23, -13, -2, -51,
+ -32, -14, -3, 47, 19, 8, -37, -11, -10, 16,
+ -32, 15, -19, 29, 0, 1, -28, 18, 20, -4,
+ -16, 13, 38, 3, 15, 0, -66, 0, 7, -13,
+ }, {
+ 77, -13, -56, -43, -13, 57, 23, -26, 11, -19,
+ -27, 16, 17, 22, -10, -15, -19, -10, -22, 43,
+ 16, 30, -2, 31, -11, -6, -5, -9, 52, 2,
+ 20, 0, 8, -50, 33, 27, -19, 19, -1, 9,
+ }, {
+ 8, 6, -33, -4, 7, 44, 18, -21, -23, -48,
+ -46, 24, 9, 40, 3, 1, -32, -13, -11, 43,
+ 7, 14, 3, 15, -26, 3, -21, 26, 50, 8,
+ 0, 16, 27, -34, 25, 23, -43, 17, -6, 1,
+ }, {
+ 71, -9, -59, -29, -8, 30, 26, -11, 30, -16,
+ 8, -44, -9, 14, 5, 2, -19, -40, -38, -15,
+ -7, 50, -17, 38, -7, -14, -24, -43, 22, -6,
+ 22, 19, 17, -34, -2, -20, -23, -10, 39, 16,
+ }, {
+ 2, 11, -36, 9, 13, 17, 21, -6, -5, -45,
+ -10, -36, -18, 33, 19, 19, -31, -44, -27, -15,
+ -16, 34, -11, 22, -22, -4, -40, -7, 21, 0,
+ 1, 35, 36, -18, -10, -24, -46, -12, 34, 8,
+ }, {
+ 32, -2, -47, -42, 7, 5, 21, -18, 9, -12,
+ -5, -5, 2, 8, -10, -4, -14, -42, -38, 10,
+ 33, 49, 5, 24, -33, -12, -17, -35, 52, 6,
+ 38, 22, 7, -72, 7, 3, 0, 6, 25, 30,
+ }, {
+ -36, 18, -24, -3, 28, -7, 16, -13, -26, -41,
+ -24, 1, -5, 26, 3, 12, -27, -46, -27, 10,
+ 24, 34, 10, 8, -49, -2, -34, 0, 51, 12,
+ 17, 38, 25, -56, 0, 0, -22, 3, 20, 22,
+ }, {
+ 121, -9, -50, -10, -40, 40, 43, 9, 58, 12,
+ -25, -41, 11, 2, 31, -5, -8, 19, -15, 32,
+ -41, 30, -16, 16, 20, -28, 0, -3, 26, -22,
+ 19, 0, 36, 4, 22, 12, -6, -9, -1, -24,
+ }, {
+ 52, 10, -27, 27, -18, 26, 38, 14, 23, -16,
+ -44, -33, 3, 20, 45, 10, -20, 15, -3, 31,
+ -50, 14, -10, 0, 5, -17, -15, 32, 24, -16,
+ -1, 15, 55, 20, 14, 8, -29, -12, -7, -32,
+ }, {
+ 82, -3, -38, -23, -24, 15, 38, 2, 37, 15,
+ -39, -2, 23, -4, 15, -12, -3, 17, -15, 58,
+ -1, 29, 6, 2, -5, -26, 7, 4, 56, -9,
+ 35, 3, 25, -33, 32, 36, 17, 7, -15, -9,
+ }, {
+ 13, 17, -15, 15, -3, 1, 33, 7, 1, -12,
+ -58, 5, 15, 13, 29, 3, -16, 13, -4, 57,
+ -10, 13, 11, -13, -21, -15, -9, 40, 55, -3,
+ 14, 19, 44, -17, 24, 32, -5, 4, -21, -18,
+ }, {
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+ }, {
+ 35, -10, 11, -44, -3, 48, -10, -6, -17, -2,
+ 11, 51, 8, -8, -38, -3, -4, 31, -12, 2,
+ 46, 1, -10, -4, -5, 7, 26, -19, 10, 5,
+ -18, -34, -45, -15, 54, 24, -18, -13, -31, -7,
+ }, {
+ -33, 10, 34, -5, 17, 35, -15, -1, -53, -30,
+ -6, 59, 0, 10, -24, 13, -17, 27, -1, 1,
+ 37, -13, -4, -20, -20, 18, 10, 16, 8, 11,
+ -39, -18, -26, 0, 46, 20, -41, -15, -37, -15,
+ }, {
+ 29, -5, 7, -30, 1, 21, -7, 7, 0, 0,
+ 47, -9, -18, -15, -22, 14, -4, 0, -28, -57,
+ 23, 21, -25, 2, -1, 0, 7, -53, -19, -3,
+ -17, -15, -36, 0, 19, -24, -21, -43, 9, 0,
+ }, {
+ -39, 14, 30, 8, 22, 8, -12, 12, -34, -27,
+ 29, -2, -26, 2, -8, 31, -16, -3, -17, -57,
+ 14, 6, -19, -13, -16, 10, -8, -17, -20, 2,
+ -38, 0, -17, 16, 11, -27, -44, -45, 4, -8,
+ }, {
+ -9, 1, 20, -43, 17, -3, -12, 0, -20, 4,
+ 33, 29, -6, -22, -38, 7, 0, -1, -29, -30,
+ 63, 21, -3, -11, -27, 1, 14, -45, 10, 9,
+ -1, -12, -47, -37, 28, 0, 2, -26, -4, 13,
+ }, {
+ -78, 21, 43, -4, 38, -17, -17, 5, -55, -24,
+ 15, 36, -14, -4, -24, 24, -12, -5, -17, -31,
+ 54, 5, 2, -27, -43, 12, -2, -9, 9, 15,
+ -22, 3, -28, -21, 20, -3, -20, -28, -9, 5,
+ }, {
+ 80, -6, 16, -11, -30, 30, 9, 28, 28, 29,
+ 13, -6, 2, -28, 3, 5, 7, 60, -5, -9,
+ -11, 1, -24, -19, 27, -13, 32, -13, -15, -19,
+ -19, -35, -17, 39, 43, 9, -4, -42, -32, -41,
+ }, {
+ 11, 14, 39, 27, -9, 17, 4, 33, -6, 0,
+ -4, 1, -5, -10, 17, 22, -5, 57, 5, -9,
+ -20, -13, -18, -35, 11, -3, 16, 22, -17, -13,
+ -40, -19, 1, 55, 35, 5, -27, -44, -37, -49,
+ }, {
+ 40, 0, 28, -24, -14, 5, 4, 21, 7, 33,
+ 0, 32, 15, -35, -12, -1, 11, 58, -5, 16,
+ 28, 0, -1, -33, 0, -11, 39, -5, 14, -6,
+ -3, -31, -28, 1, 53, 33, 19, -25, -46, -26,
+ }, {
+ -28, 20, 51, 14, 6, -7, 0, 26, -27, 4,
+ -18, 40, 6, -16, 1, 15, 0, 55, 5, 16,
+ 19, -14, 3, -49, -14, -1, 22, 30, 12, 0,
+ -24, -15, -9, 17, 45, 29, -4, -28, -51, -35,
+ }, {
+ 34, 4, 25, -10, -9, -21, 7, 36, 26, 36,
+ 35, -28, -12, -42, 3, 16, 12, 28, -21, -42,
+ 5, 21, -16, -26, 4, -19, 19, -39, -15, -15,
+ -1, -13, -19, 17, 17, -14, 15, -55, -4, -19,
+ }, {
+ -34, 25, 48, 28, 11, -34, 2, 41, -9, 7,
+ 17, -21, -20, -24, 17, 33, 0, 24, -10, -42,
+ -3, 5, -10, -42, -11, -8, 3, -3, -16, -9,
+ -22, 2, 0, 33, 10, -18, -7, -58, -10, -28,
+ }, {
+ -4, 11, 37, -23, 5, -46, 2, 29, 5, 39,
+ 21, 9, 0, -49, -12, 9, 16, 26, -22, -15,
+ 45, 20, 5, -40, -22, -17, 26, -31, 14, -2,
+ 14, -10, -30, -20, 27, 9, 39, -39, -18, -5,
+ }, {
+ -73, 32, 60, 15, 26, -59, -2, 33, -30, 10,
+ 3, 17, -8, -30, 1, 26, 4, 22, -10, -16,
+ 36, 5, 11, -56, -37, -6, 10, 5, 13, 3,
+ -6, 5, -11, -4, 19, 5, 16, -41, -24, -13
+ }
+};
-static void final(Real144_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len);
-static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2, int m3, short *s1, short *s2, short *s3, short *dest);
-static int irms(short *data, int factor);
-static void rotate_block(short *source, short *target, int offset);
-/* lookup square roots in table */
-static int t_sqrt(unsigned int x)
-{
- int s=0;
- while (x>0xfff) { s++; x=x>>2; }
- return (sqrt_table[x]<<s)<<2;
-}
+const uint16_t ff_cb1_base[128]={
+ 19657, 18474, 18365, 17520, 21048, 18231, 18584, 16671,
+ 20363, 19069, 19409, 18430, 21844, 18753, 19613, 17411,
+ 20389, 21772, 20129, 21702, 20978, 20472, 19627, 19387,
+ 21477, 23134, 21841, 23919, 22089, 21519, 21134, 20852,
+ 19675, 17821, 19044, 17477, 19986, 16955, 18446, 16086,
+ 21138, 18899, 20952, 18929, 21452, 17833, 20104, 17159,
+ 19770, 20056, 20336, 20866, 19329, 18217, 18908, 18004,
+ 21556, 21948, 23079, 23889, 20922, 19544, 20984, 19781,
+ 19781, 20984, 19544, 20922, 23889, 23079, 21948, 21556,
+ 18004, 18908, 18217, 19329, 20866, 20336, 20056, 19770,
+ 17159, 20104, 17833, 21452, 18929, 20952, 18899, 21138,
+ 16086, 18446, 16955, 19986, 17477, 19044, 17821, 19675,
+ 20852, 21134, 21519, 22089, 23919, 21841, 23134, 21477,
+ 19387, 19627, 20472, 20978, 21702, 20129, 21772, 20389,
+ 17411, 19613, 18753, 21844, 18430, 19409, 19069, 20363,
+ 16671, 18584, 18231, 21048, 17520, 18365, 18474, 19657,
+};
+
+const uint16_t ff_cb2_base[128]={
+ 12174, 13380, 13879, 13832, 13170, 13227, 13204, 12053,
+ 12410, 13988, 14348, 14631, 13100, 13415, 13224, 12268,
+ 11982, 13825, 13499, 14210, 13877, 14788, 13811, 13109,
+ 11449, 13275, 12833, 13717, 12728, 13696, 12759, 12405,
+ 10230, 12185, 11628, 13161, 11762, 13458, 12312, 12818,
+ 10443, 12773, 12011, 14020, 11818, 13825, 12453, 13226,
+ 10446, 13162, 11881, 14300, 12859, 16288, 13490, 15053,
+ 10155, 12820, 11519, 13973, 12041, 15081, 12635, 14198,
+ 14198, 12635, 15081, 12041, 13973, 11519, 12820, 10155,
+ 15053, 13490, 16288, 12859, 14300, 11881, 13162, 10446,
+ 13226, 12453, 13825, 11818, 14020, 12011, 12773, 10443,
+ 12818, 12312, 13458, 11762, 13161, 11628, 12185, 10230,
+ 12405, 12759, 13696, 12728, 13717, 12833, 13275, 11449,
+ 13109, 13811, 14788, 13877, 14210, 13499, 13825, 11982,
+ 12268, 13224, 13415, 13100, 14631, 14348, 13988, 12410,
+ 12053, 13204, 13227, 13170, 13832, 13879, 13380, 12174,
+};
+
+const int16_t ff_energy_tab[32]={
+ 0, 16, 20, 25, 32, 41, 51, 65,
+ 81, 103, 129, 163, 205, 259, 326, 410,
+ 516, 650, 819, 1031, 1298, 1634, 2057, 2590,
+ 3261, 4105, 5168, 6507, 8192, 10313, 12983, 16345
+};
+
+static const int16_t lpc_refl_cb1[64]={
+ -4041, -4018, -3998, -3977, -3954, -3930, -3906, -3879,
+ -3852, -3825, -3795, -3764, -3731, -3699, -3666, -3631,
+ -3594, -3555, -3513, -3468, -3420, -3372, -3321, -3268,
+ -3212, -3153, -3090, -3021, -2944, -2863, -2772, -2676,
+ -2565, -2445, -2328, -2202, -2072, -1941, -1808, -1660,
+ -1508, -1348, -1185, -994, -798, -600, -374, -110,
+ 152, 447, 720, 982, 1229, 1456, 1682, 1916,
+ 2130, 2353, 2595, 2853, 3118, 3363, 3588, 3814
+};
+
+static const int16_t lpc_refl_cb2[32]={
+ -3091, -2386, -1871, -1425, -1021, -649, -316, -20,
+ 267, 544, 810, 1065, 1305, 1534, 1756, 1970,
+ 2171, 2359, 2536, 2700, 2854, 2996, 3133, 3263,
+ 3386, 3499, 3603, 3701, 3789, 3870, 3947, 4020
+};
+
+static const int16_t lpc_refl_cb3[32]={
+ -3525, -3295, -3081, -2890, -2696, -2511, -2328, -2149,
+ -1979, -1817, -1658, -1498, -1341, -1188, -1032, -876,
+ -721, -561, -394, -228, -54, 119, 296, 484,
+ 683, 895, 1123, 1373, 1651, 1965, 2360, 2854
+};
-/* do 'voice' */
-static void do_voice(int *a1, int *a2)
+static const int16_t lpc_refl_cb4[16]={
+ -1845, -1057, -522, -77, 301, 647, 975, 1285,
+ 1582, 1873, 2163, 2452, 2735, 3017, 3299, 3569
+};
+
+static const int16_t lpc_refl_cb5[16]={
+ -2691, -2187, -1788, -1435, -1118, -837, -571, -316,
+ -59, 201, 470, 759, 1077, 1457, 1908, 2495
+};
+
+static const int16_t lpc_refl_cb6[8]={
+ -1372, -474, 133, 632, 1100, 1571, 2075, 2672
+};
+
+static const int16_t lpc_refl_cb7[8]={
+ -2389, -1787, -1231, -717, -239, 234, 770, 1474
+};
+
+static const int16_t lpc_refl_cb8[8]={
+ -1569, -864, -296, 200, 670, 1151, 1709, 2385
+};
+
+static const int16_t lpc_refl_cb9[8]={
+ -2200, -1608, -1062, -569, -120, 338, 863, 1621
+};
+
+static const int16_t lpc_refl_cb10[4]={
+ -617, 190, 802, 1483
+};
+
+const int16_t * const ff_lpc_refl_cb[10]={
+ lpc_refl_cb1, lpc_refl_cb2, lpc_refl_cb3, lpc_refl_cb4, lpc_refl_cb5,
+ lpc_refl_cb6, lpc_refl_cb7, lpc_refl_cb8, lpc_refl_cb9, lpc_refl_cb10
+};
+
+static void ff_add_wav(int16_t *dest, int n, int skip_first, int *m, const int16_t *s1,
+ const int8_t *s2, const int8_t *s3)
{
- int buffer[10];
- int *b1,*b2;
- int x,y;
- int *ptr,*tmp;
-
- b1=buffer;
- b2=a2;
-
- for (x=0;x<10;x++) {
- b1[x]=(*a1)<<4;
-
- if(x>0) {
- ptr=b2+x;
- for (y=0;y<=x-1;y++)
- b1[y]=(((*a1)*(*(--ptr)))>>12)+b2[y];
+ int i;
+ int v[3];
+
+ v[0] = 0;
+ for (i=!skip_first; i<3; i++)
+ v[i] = (ff_gain_val_tab[n][i] * m[i]) >> ff_gain_exp_tab[n];
+
+ if (v[0]) {
+ for (i=0; i < BLOCKSIZE; i++)
+ dest[i] = (s1[i]*v[0] + s2[i]*v[1] + s3[i]*v[2]) >> 12;
+ } else {
+ for (i=0; i < BLOCKSIZE; i++)
+ dest[i] = ( s2[i]*v[1] + s3[i]*v[2]) >> 12;
}
- tmp=b1;
- b1=b2;
- b2=tmp;
- a1++;
- }
- ptr=a2+10;
- while (ptr>a2) (*a2++)>>=4;
}
-
-/* do quarter-block output */
-static void do_output_subblock(Real144_internal *glob, int x)
+/**
+ * Copy the last offset values of *source to *target. If those values are not
+ * enough to fill the target buffer, fill it with another copy of those values.
+ */
+void ff_copy_and_dup(int16_t *target, const int16_t *source, int offset)
{
- int a,b,c,d,e,f,g;
-
- if (x==1) memset(glob->buffer,0,20);
- if ((*glob->iptr)==0) a=0;
- else a=(*glob->iptr)+HALFBLOCK-1;
- glob->iptr++;
- b=*(glob->iptr++);
- c=*(glob->iptr++);
- d=*(glob->iptr++);
- if (a) rotate_block(glob->buffer_2,glob->buffer_a,a);
- memcpy(glob->buffer_b,etable1+b*BLOCKSIZE,BLOCKSIZE*2);
- e=((ftable1[b]>>4)*glob->gval)>>8;
- memcpy(glob->buffer_c,etable2+c*BLOCKSIZE,BLOCKSIZE*2);
- f=((ftable2[c]>>4)*glob->gval)>>8;
- if (a) g=irms(glob->buffer_a,glob->gval)>>12;
- else g=0;
- add_wav(glob,d,a,g,e,f,glob->buffer_a,glob->buffer_b,glob->buffer_c,glob->buffer_d);
- memmove(glob->buffer_2,glob->buffer_2+BLOCKSIZE,(BUFFERSIZE-BLOCKSIZE)*2);
- memcpy(glob->buffer_2+BUFFERSIZE-BLOCKSIZE,glob->buffer_d,BLOCKSIZE*2);
- final(glob,glob->gsp,glob->buffer_d,glob->output_buffer,glob->buffer,BLOCKSIZE);
+ source += BUFFERSIZE - offset;
+
+ memcpy(target, source, FFMIN(BLOCKSIZE, offset)*sizeof(*target));
+ if (offset < BLOCKSIZE)
+ memcpy(target + offset, source, (BLOCKSIZE - offset)*sizeof(*target));
}
-/* rotate block */
-static void rotate_block(short *source, short *target, int offset)
+/**
+ * Evaluate the reflection coefficients from the filter coefficients.
+ *
+ * @return 1 if one of the reflection coefficients is greater than
+ * 4095, 0 if not.
+ */
+int ff_eval_refl(int *refl, const int16_t *coefs, AVCodecContext *avctx)
{
- short *end;
- short *ptr1;
- short *ptr2;
- short *ptr3;
- ptr2=source+BUFFERSIZE;
- ptr3=ptr1=ptr2-offset;
- end=target+BLOCKSIZE;
- while (target<end) {
- *(target++)=*(ptr3++);
- if (ptr3==ptr2) ptr3=ptr1;
- }
+ int b, i, j;
+ int buffer1[LPC_ORDER];
+ int buffer2[LPC_ORDER];
+ int *bp1 = buffer1;
+ int *bp2 = buffer2;
+
+ for (i=0; i < LPC_ORDER; i++)
+ buffer2[i] = coefs[i];
+
+ refl[LPC_ORDER-1] = bp2[LPC_ORDER-1];
+
+ if ((unsigned) bp2[LPC_ORDER-1] + 0x1000 > 0x1fff) {
+ av_log(avctx, AV_LOG_ERROR, "Overflow. Broken sample?\n");
+ return 1;
+ }
+
+ for (i = LPC_ORDER-2; i >= 0; i--) {
+ b = 0x1000-((bp2[i+1] * bp2[i+1]) >> 12);
+
+ if (!b)
+ b = -2;
+
+ for (j=0; j <= i; j++)
+ bp1[j] = ((bp2[j] - ((refl[i+1] * bp2[i-j]) >> 12)) * (0x1000000 / b)) >> 12;
+
+ if ((unsigned) bp1[i] + 0x1000 > 0x1fff)
+ return 1;
+
+ refl[i] = bp1[i];
+
+ FFSWAP(int *, bp1, bp2);
+ }
+ return 0;
}
-/* inverse root mean square */
-static int irms(short *data, int factor)
+/**
+ * Evaluate the LPC filter coefficients from the reflection coefficients.
+ * Does the inverse of the ff_eval_refl() function.
+ */
+void ff_eval_coefs(int *coefs, const int *refl)
{
- short *p1,*p2;
- unsigned int sum;
- p2=(p1=data)+BLOCKSIZE;
- for (sum=0;p2>p1;p1++) sum+=(*p1)*(*p1);
- if (sum==0) return 0; /* OOPS - division by zero */
- return (0x20000000/(t_sqrt(sum)>>8))*factor;
+ int buffer[LPC_ORDER];
+ int *b1 = buffer;
+ int *b2 = coefs;
+ int i, j;
+
+ for (i=0; i < LPC_ORDER; i++) {
+ b1[i] = refl[i] << 4;
+
+ for (j=0; j < i; j++)
+ b1[j] = ((refl[i] * b2[i-j-1]) >> 12) + b2[j];
+
+ FFSWAP(int *, b1, b2);
+ }
+
+ for (i=0; i < LPC_ORDER; i++)
+ coefs[i] >>= 4;
}
-/* multiply/add wavetable */
-static void add_wav(Real144_internal *glob, int n, int f, int m1, int m2, int m3, short *s1, short *s2, short *s3, short *dest)
+void ff_int_to_int16(int16_t *out, const int *inp)
{
- int a,b,c;
- short *ptr,*ptr2;
-
- ptr=glob->wavtable1+n*9;
- ptr2=glob->wavtable2+n*9;
- if (f!=0) {
- a=((*ptr)*m1)>>((*ptr2)+1);
- } else {
- a=0;
- }
- ptr++;ptr2++;
- b=((*ptr)*m2)>>((*ptr2)+1);
- ptr++;ptr2++;
- c=((*ptr)*m3)>>((*ptr2)+1);
- ptr2=(ptr=dest)+BLOCKSIZE;
- if (f!=0)
- while (ptr<ptr2)
- *(ptr++)=((*(s1++))*a+(*(s2++))*b+(*(s3++))*c)>>12;
- else
- while (ptr<ptr2)
- *(ptr++)=((*(s2++))*b+(*(s3++))*c)>>12;
-}
+ int i;
+ for (i = 0; i < LPC_ORDER; i++)
+ *out++ = *inp++;
+}
-static void final(Real144_internal *glob, short *i1, short *i2, void *out, int *statbuf, int len)
+/**
+ * Evaluate sqrt(x << 24). x must fit in 20 bits. This value is evaluated in an
+ * odd way to make the output identical to the binary decoder.
+ */
+int ff_t_sqrt(unsigned int x)
{
- int x,sum;
- int buffer[10];
- short *ptr;
- short *ptr2;
-
- memcpy(glob->work,statbuf,20);
- memcpy(glob->work+10,i2,len*2);
-
- buffer[9]=i1[0];
- buffer[8]=i1[1];
- buffer[7]=i1[2];
- buffer[6]=i1[3];
- buffer[5]=i1[4];
- buffer[4]=i1[5];
- buffer[3]=i1[6];
- buffer[2]=i1[7];
- buffer[1]=i1[8];
- buffer[0]=i1[9];
-
- ptr2=(ptr=glob->work)+len;
- while (ptr<ptr2) {
- for(sum=0,x=0;x<=9;x++)
- sum+=buffer[x]*(ptr[x]);
- sum=sum>>12;
- x=ptr[10]-sum;
- if (x<-32768 || x>32767)
- {
- memset(out,0,len*2);
- memset(statbuf,0,20);
- return;
+ int s = 2;
+ while (x > 0xfff) {
+ s++;
+ x >>= 2;
}
- ptr[10]=x;
- ptr++;
- }
- memcpy(out,ptr+10-len,len*2);
- memcpy(statbuf,ptr,20);
-}
-/* Decode 20-byte input */
-static void unpack_input(unsigned char *input, unsigned int *output)
-{
- unsigned int outbuffer[28];
- unsigned short inbuffer[10];
- unsigned int x;
- unsigned int *ptr;
-
- /* fix endianness */
- for (x=0;x<20;x+=2)
- inbuffer[x/2]=(input[x]<<8)+input[x+1];
-
- /* unpack */
- ptr=outbuffer;
- *(ptr++)=27;
- *(ptr++)=(inbuffer[0]>>10)&0x3f;
- *(ptr++)=(inbuffer[0]>>5)&0x1f;
- *(ptr++)=inbuffer[0]&0x1f;
- *(ptr++)=(inbuffer[1]>>12)&0xf;
- *(ptr++)=(inbuffer[1]>>8)&0xf;
- *(ptr++)=(inbuffer[1]>>5)&7;
- *(ptr++)=(inbuffer[1]>>2)&7;
- *(ptr++)=((inbuffer[1]<<1)&6)|((inbuffer[2]>>15)&1);
- *(ptr++)=(inbuffer[2]>>12)&7;
- *(ptr++)=(inbuffer[2]>>10)&3;
- *(ptr++)=(inbuffer[2]>>5)&0x1f;
- *(ptr++)=((inbuffer[2]<<2)&0x7c)|((inbuffer[3]>>14)&3);
- *(ptr++)=(inbuffer[3]>>6)&0xff;
- *(ptr++)=((inbuffer[3]<<1)&0x7e)|((inbuffer[4]>>15)&1);
- *(ptr++)=(inbuffer[4]>>8)&0x7f;
- *(ptr++)=(inbuffer[4]>>1)&0x7f;
- *(ptr++)=((inbuffer[4]<<7)&0x80)|((inbuffer[5]>>9)&0x7f);
- *(ptr++)=(inbuffer[5]>>2)&0x7f;
- *(ptr++)=((inbuffer[5]<<5)&0x60)|((inbuffer[6]>>11)&0x1f);
- *(ptr++)=(inbuffer[6]>>4)&0x7f;
- *(ptr++)=((inbuffer[6]<<4)&0xf0)|((inbuffer[7]>>12)&0xf);
- *(ptr++)=(inbuffer[7]>>5)&0x7f;
- *(ptr++)=((inbuffer[7]<<2)&0x7c)|((inbuffer[8]>>14)&3);
- *(ptr++)=(inbuffer[8]>>7)&0x7f;
- *(ptr++)=((inbuffer[8]<<1)&0xfe)|((inbuffer[9]>>15)&1);
- *(ptr++)=(inbuffer[9]>>8)&0x7f;
- *(ptr++)=(inbuffer[9]>>1)&0x7f;
-
- *(output++)=outbuffer[11];
- for (x=1;x<11;*(output++)=outbuffer[x++]);
- ptr=outbuffer+12;
- for (x=0;x<16;x+=4)
- {
- *(output++)=ptr[x];
- *(output++)=ptr[x+2];
- *(output++)=ptr[x+3];
- *(output++)=ptr[x+1];
- }
+ return ff_sqrt(x << 20) << s;
}
-static unsigned int rms(int *data, int f)
+unsigned int ff_rms(const int *data)
{
- int *c;
- int x;
- unsigned int res;
- int b;
-
- c=data;
- b=0;
- res=0x10000;
- for (x=0;x<10;x++)
- {
- res=(((0x1000000-(*c)*(*c))>>12)*res)>>12;
- if (res==0) return 0;
- if (res<=0x3fff)
- {
- while (res<=0x3fff)
- {
- b++;
- res<<=2;
- }
- } else {
- if (res>0x10000)
- return 0; /* We're screwed, might as well go out with a bang. :P */
+ int i;
+ unsigned int res = 0x10000;
+ int b = LPC_ORDER;
+
+ for (i = 0; i < LPC_ORDER; i++) {
+ res = (((0x1000000 - data[i]*data[i]) >> 12) * res) >> 12;
+
+ if (res == 0)
+ return 0;
+
+ while (res <= 0x3fff) {
+ b++;
+ res <<= 2;
+ }
}
- c++;
- }
- if (res>0) res=t_sqrt(res);
- res>>=(b+10);
- res=(res*f)>>10;
- return res;
+ return ff_t_sqrt(res) >> b;
}
-static void dec1(Real144_internal *glob, int *data, int *inp, int n, int f)
+int ff_interp(RA144Context *ractx, int16_t *out, int a, int copyold, int energy)
{
- short *ptr,*end;
+ int work[LPC_ORDER];
+ int b = NBLOCKS - a;
+ int i;
+
+ // Interpolate block coefficients from the this frame's forth block and
+ // last frame's forth block.
+ for (i = 0; i < LPC_ORDER; i++)
+ out[i] = (a * ractx->lpc_coef[0][i] + b * ractx->lpc_coef[1][i])>> 2;
- *(glob->decptr++)=rms(data,f);
- glob->decptr++;
- end=(ptr=glob->decsp)+(n*10);
- while (ptr<end) *(ptr++)=*(inp++);
+ if (ff_eval_refl(work, out, ractx->avctx)) {
+ // The interpolated coefficients are unstable, copy either new or old
+ // coefficients.
+ ff_int_to_int16(out, ractx->lpc_coef[copyold]);
+ return ff_rescale_rms(ractx->lpc_refl_rms[copyold], energy);
+ } else {
+ return ff_rescale_rms(ff_rms(work), energy);
+ }
}
-static int eq(Real144_internal *glob, short *in, int *target)
+unsigned int ff_rescale_rms(unsigned int rms, unsigned int energy)
{
- int retval;
- int a;
- int b;
- int c;
- unsigned int u;
- short *sptr;
- int *ptr1,*ptr2,*ptr3;
- int *bp1,*bp2,*temp;
-
- retval=0;
- bp1=glob->buffer1;
- bp2=glob->buffer2;
- ptr2=(ptr3=glob->buffer2)+9;
- sptr=in;
- while (ptr2>=ptr3)
- *(ptr3++)=*(sptr++);
-
- target+=9;
- a=bp2[9];
- *target=a;
- if (a+0x1000>0x1fff)
- return 0; /* We're screwed, might as well go out with a bang. :P */
- c=8;u=a;
- while (c>=0)
- {
- if (u==0x1000) u++;
- if (u==0xfffff000) u--;
- b=0x1000-((u*u)>>12);
- if (b==0) b++;
- ptr2=bp1;
- ptr1=(ptr3=bp2)+c;
- for (u=0;u<=c;u++)
- *(ptr2++)=((*(ptr3++)-(((*target)*(*(ptr1--)))>>12))*(0x1000000/b))>>12;
- *(--target)=u=bp1[(c--)];
- if ((u+0x1000)>0x1fff) retval=1;
- temp=bp2;
- bp2=bp1;
- bp1=temp;
- }
- return retval;
+ return (rms * energy) >> 10;
}
-static void dec2(Real144_internal *glob, int *data, int *inp, int n, int f, int *inp2, int l)
+/** inverse root mean square */
+int ff_irms(const int16_t *data)
{
- unsigned int *ptr1,*ptr2;
- int work[10];
- int a,b;
- int x;
- int result;
-
- if(l+1<NBLOCKS/2) a=NBLOCKS-(l+1);
- else a=l+1;
- b=NBLOCKS-a;
- if (l==0)
- {
- glob->decsp=glob->sptr=glob->gbuf2;
- glob->decptr=glob->gbuf1;
- }
- ptr1=inp;
- ptr2=inp2;
- for (x=0;x<10*n;x++)
- *(glob->sptr++)=(a*(*ptr1++)+b*(*ptr2++))>>2;
- result=eq(glob,glob->decsp,work);
- if (result==1)
- {
- dec1(glob,data,inp,n,f);
- } else {
- *(glob->decptr++)=rms(work,f);
- glob->decptr++;
- }
- glob->decsp+=n*10;
+ unsigned int i, sum = 0;
+
+ for (i=0; i < BLOCKSIZE; i++)
+ sum += data[i] * data[i];
+
+ if (sum == 0)
+ return 0; /* OOPS - division by zero */
+
+ return 0x20000000 / (ff_t_sqrt(sum) >> 8);
}
-/* Uncompress one block (20 bytes -> 160*2 bytes) */
-static int ra144_decode_frame(AVCodecContext * avctx,
- void *data, int *data_size,
- uint8_t * buf, int buf_size)
+void ff_subblock_synthesis(RA144Context *ractx, const uint16_t *lpc_coefs,
+ int cba_idx, int cb1_idx, int cb2_idx,
+ int gval, int gain)
{
- unsigned int a,b,c;
- long s;
- signed short *shptr;
- unsigned int *lptr,*temp;
- const short **dptr;
- void *datao;
- Real144_internal *glob=avctx->priv_data;
-
- datao = data;
- unpack_input(buf,glob->unpacked);
-
- glob->iptr=glob->unpacked;
- glob->val=decodetable[0][(*(glob->iptr++))<<1];
-
- dptr=decodetable+1;
- lptr=glob->swapbuf1;
- while (lptr<glob->swapbuf1+10)
- *(lptr++)=(*(dptr++))[(*(glob->iptr++))<<1];
-
- do_voice(glob->swapbuf1,glob->swapbuf2);
-
- a=t_sqrt(glob->val*glob->oldval)>>12;
-
- for (c=0;c<NBLOCKS;c++) {
- if (c==(NBLOCKS-1)) {
- dec1(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val);
+ uint16_t buffer_a[BLOCKSIZE];
+ uint16_t *block;
+ int m[3];
+
+ if (cba_idx) {
+ cba_idx += BLOCKSIZE/2 - 1;
+ ff_copy_and_dup(buffer_a, ractx->adapt_cb, cba_idx);
+ m[0] = (ff_irms(buffer_a) * gval) >> 12;
} else {
- if (c*2==(NBLOCKS-2)) {
- if (glob->oldval<glob->val) {
- dec2(glob,glob->swapbuf1,glob->swapbuf2,3,a,glob->swapbuf2alt,c);
- } else {
- dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,a,glob->swapbuf2,c);
- }
- } else {
- if (c*2<(NBLOCKS-2)) {
- dec2(glob,glob->swapbuf1alt,glob->swapbuf2alt,3,glob->oldval,glob->swapbuf2,c);
- } else {
- dec2(glob,glob->swapbuf1,glob->swapbuf2,3,glob->val,glob->swapbuf2alt,c);
- }
- }
- }
- }
-
- /* do output */
- for (b=0,c=0;c<4;c++) {
- glob->gval=glob->gbuf1[c*2];
- glob->gsp=glob->gbuf2+b;
- do_output_subblock(glob,glob->resetflag);
- glob->resetflag=0;
-
- shptr=glob->output_buffer;
- while (shptr<glob->output_buffer+BLOCKSIZE) {
- s=*(shptr++)<<2;
- *((int16_t *)data)=s;
- if (s>32767) *((int16_t *)data)=32767;
- if (s<-32767) *((int16_t *)data)=-32768;
- ((int16_t *)data)++;
+ m[0] = 0;
}
- b+=30;
- }
-
- glob->oldval=glob->val;
- temp=glob->swapbuf1alt;
- glob->swapbuf1alt=glob->swapbuf1;
- glob->swapbuf1=temp;
- temp=glob->swapbuf2alt;
- glob->swapbuf2alt=glob->swapbuf2;
- glob->swapbuf2=temp;
- *data_size=data-datao;
- return 20;
-}
+ m[1] = (ff_cb1_base[cb1_idx] * gval) >> 8;
+ m[2] = (ff_cb2_base[cb2_idx] * gval) >> 8;
+ memmove(ractx->adapt_cb, ractx->adapt_cb + BLOCKSIZE,
+ (BUFFERSIZE - BLOCKSIZE) * sizeof(*ractx->adapt_cb));
+ block = ractx->adapt_cb + BUFFERSIZE - BLOCKSIZE;
-AVCodec ra_144_decoder =
-{
- "real_144",
- CODEC_TYPE_AUDIO,
- CODEC_ID_RA_144,
- sizeof(Real144_internal),
- ra144_decode_init,
- NULL,
- NULL,
- ra144_decode_frame,
-};
+ ff_add_wav(block, gain, cba_idx, m, cba_idx? buffer_a: NULL,
+ ff_cb1_vects[cb1_idx], ff_cb2_vects[cb2_idx]);
+
+ memcpy(ractx->curr_sblock, ractx->curr_sblock + BLOCKSIZE,
+ LPC_ORDER*sizeof(*ractx->curr_sblock));
+
+ if (ff_celp_lp_synthesis_filter(ractx->curr_sblock + LPC_ORDER, lpc_coefs,
+ block, BLOCKSIZE, LPC_ORDER, 1, 0, 0xfff))
+ memset(ractx->curr_sblock, 0, (LPC_ORDER+BLOCKSIZE)*sizeof(*ractx->curr_sblock));
+}
projects / ffmpeg / blobdiff