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https://github.com/libretro/scummvm.git
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236 lines
9.4 KiB
C++
236 lines
9.4 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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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* 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 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "sound/mods/module.h"
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#include "common/util.h"
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namespace Modules {
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const int16 Module::periods[16][60] = {
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{1712, 1616, 1524, 1440, 1356, 1280, 1208, 1140, 1076, 1016, 960 , 906,
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856 , 808 , 762 , 720 , 678 , 640 , 604 , 570 , 538 , 508 , 480 , 453,
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428 , 404 , 381 , 360 , 339 , 320 , 302 , 285 , 269 , 254 , 240 , 226,
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214 , 202 , 190 , 180 , 170 , 160 , 151 , 143 , 135 , 127 , 120 , 113,
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107 , 101 , 95 , 90 , 85 , 80 , 75 , 71 , 67 , 63 , 60 , 56 },
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{1700, 1604, 1514, 1430, 1348, 1274, 1202, 1134, 1070, 1010, 954 , 900,
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850 , 802 , 757 , 715 , 674 , 637 , 601 , 567 , 535 , 505 , 477 , 450,
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425 , 401 , 379 , 357 , 337 , 318 , 300 , 284 , 268 , 253 , 239 , 225,
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213 , 201 , 189 , 179 , 169 , 159 , 150 , 142 , 134 , 126 , 119 , 113,
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106 , 100 , 94 , 89 , 84 , 79 , 75 , 71 , 67 , 63 , 59 , 56 },
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{1688, 1592, 1504, 1418, 1340, 1264, 1194, 1126, 1064, 1004, 948 , 894,
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844 , 796 , 752 , 709 , 670 , 632 , 597 , 563 , 532 , 502 , 474 , 447,
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422 , 398 , 376 , 355 , 335 , 316 , 298 , 282 , 266 , 251 , 237 , 224,
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211 , 199 , 188 , 177 , 167 , 158 , 149 , 141 , 133 , 125 , 118 , 112,
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105 , 99 , 94 , 88 , 83 , 79 , 74 , 70 , 66 , 62 , 59 , 56 },
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{1676, 1582, 1492, 1408, 1330, 1256, 1184, 1118, 1056, 996 , 940 , 888,
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838 , 791 , 746 , 704 , 665 , 628 , 592 , 559 , 528 , 498 , 470 , 444,
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419 , 395 , 373 , 352 , 332 , 314 , 296 , 280 , 264 , 249 , 235 , 222,
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209 , 198 , 187 , 176 , 166 , 157 , 148 , 140 , 132 , 125 , 118 , 111,
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104 , 99 , 93 , 88 , 83 , 78 , 74 , 70 , 66 , 62 , 59 , 55 },
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{1664, 1570, 1482, 1398, 1320, 1246, 1176, 1110, 1048, 990 , 934 , 882,
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832 , 785 , 741 , 699 , 660 , 623 , 588 , 555 , 524 , 495 , 467 , 441,
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416 , 392 , 370 , 350 , 330 , 312 , 294 , 278 , 262 , 247 , 233 , 220,
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208 , 196 , 185 , 175 , 165 , 156 , 147 , 139 , 131 , 124 , 117 , 110,
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104 , 98 , 92 , 87 , 82 , 78 , 73 , 69 , 65 , 62 , 58 , 55 },
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{1652, 1558, 1472, 1388, 1310, 1238, 1168, 1102, 1040, 982 , 926 , 874,
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826 , 779 , 736 , 694 , 655 , 619 , 584 , 551 , 520 , 491 , 463 , 437,
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413 , 390 , 368 , 347 , 328 , 309 , 292 , 276 , 260 , 245 , 232 , 219,
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206 , 195 , 184 , 174 , 164 , 155 , 146 , 138 , 130 , 123 , 116 , 109,
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103 , 97 , 92 , 87 , 82 , 77 , 73 , 69 , 65 , 61 , 58 , 54 },
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{1640, 1548, 1460, 1378, 1302, 1228, 1160, 1094, 1032, 974 , 920 , 868,
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820 , 774 , 730 , 689 , 651 , 614 , 580 , 547 , 516 , 487 , 460 , 434,
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410 , 387 , 365 , 345 , 325 , 307 , 290 , 274 , 258 , 244 , 230 , 217,
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205 , 193 , 183 , 172 , 163 , 154 , 145 , 137 , 129 , 122 , 115 , 109,
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102 , 96 , 91 , 86 , 81 , 77 , 72 , 68 , 64 , 61 , 57 , 54 },
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{1628, 1536, 1450, 1368, 1292, 1220, 1150, 1086, 1026, 968 , 914 , 862,
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814 , 768 , 725 , 684 , 646 , 610 , 575 , 543 , 513 , 484 , 457 , 431,
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407 , 384 , 363 , 342 , 323 , 305 , 288 , 272 , 256 , 242 , 228 , 216,
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204 , 192 , 181 , 171 , 161 , 152 , 144 , 136 , 128 , 121 , 114 , 108,
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102 , 96 , 90 , 85 , 80 , 76 , 72 , 68 , 64 , 60 , 57 , 54 },
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{1814, 1712, 1616, 1524, 1440, 1356, 1280, 1208, 1140, 1076, 1016, 960,
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907 , 856 , 808 , 762 , 720 , 678 , 640 , 604 , 570 , 538 , 508 , 480,
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453 , 428 , 404 , 381 , 360 , 339 , 320 , 302 , 285 , 269 , 254 , 240,
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226 , 214 , 202 , 190 , 180 , 170 , 160 , 151 , 143 , 135 , 127 , 120,
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113 , 107 , 101 , 95 , 90 , 85 , 80 , 75 , 71 , 67 , 63 , 60 },
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{1800, 1700, 1604, 1514, 1430, 1350, 1272, 1202, 1134, 1070, 1010, 954,
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900 , 850 , 802 , 757 , 715 , 675 , 636 , 601 , 567 , 535 , 505 , 477,
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450 , 425 , 401 , 379 , 357 , 337 , 318 , 300 , 284 , 268 , 253 , 238,
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225 , 212 , 200 , 189 , 179 , 169 , 159 , 150 , 142 , 134 , 126 , 119,
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112 , 106 , 100 , 94 , 89 , 84 , 79 , 75 , 71 , 67 , 63 , 59 },
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{1788, 1688, 1592, 1504, 1418, 1340, 1264, 1194, 1126, 1064, 1004, 948,
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894 , 844 , 796 , 752 , 709 , 670 , 632 , 597 , 563 , 532 , 502 , 474,
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447 , 422 , 398 , 376 , 355 , 335 , 316 , 298 , 282 , 266 , 251 , 237,
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223 , 211 , 199 , 188 , 177 , 167 , 158 , 149 , 141 , 133 , 125 , 118,
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111 , 105 , 99 , 94 , 88 , 83 , 79 , 74 , 70 , 66 , 62 , 59 },
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{1774, 1676, 1582, 1492, 1408, 1330, 1256, 1184, 1118, 1056, 996 , 940,
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887 , 838 , 791 , 746 , 704 , 665 , 628 , 592 , 559 , 528 , 498 , 470,
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444 , 419 , 395 , 373 , 352 , 332 , 314 , 296 , 280 , 264 , 249 , 235,
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222 , 209 , 198 , 187 , 176 , 166 , 157 , 148 , 140 , 132 , 125 , 118,
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111 , 104 , 99 , 93 , 88 , 83 , 78 , 74 , 70 , 66 , 62 , 59 },
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{1762, 1664, 1570, 1482, 1398, 1320, 1246, 1176, 1110, 1048, 988 , 934,
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881 , 832 , 785 , 741 , 699 , 660 , 623 , 588 , 555 , 524 , 494 , 467,
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441 , 416 , 392 , 370 , 350 , 330 , 312 , 294 , 278 , 262 , 247 , 233,
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220 , 208 , 196 , 185 , 175 , 165 , 156 , 147 , 139 , 131 , 123 , 117,
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110 , 104 , 98 , 92 , 87 , 82 , 78 , 73 , 69 , 65 , 61 , 58 },
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{1750, 1652, 1558, 1472, 1388, 1310, 1238, 1168, 1102, 1040, 982 , 926,
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875 , 826 , 779 , 736 , 694 , 655 , 619 , 584 , 551 , 520 , 491 , 463,
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437 , 413 , 390 , 368 , 347 , 328 , 309 , 292 , 276 , 260 , 245 , 232,
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219 , 206 , 195 , 184 , 174 , 164 , 155 , 146 , 138 , 130 , 123 , 116,
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109 , 103 , 97 , 92 , 87 , 82 , 77 , 73 , 69 , 65 , 61 , 58 },
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{1736, 1640, 1548, 1460, 1378, 1302, 1228, 1160, 1094, 1032, 974 , 920,
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868 , 820 , 774 , 730 , 689 , 651 , 614 , 580 , 547 , 516 , 487 , 460,
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434 , 410 , 387 , 365 , 345 , 325 , 307 , 290 , 274 , 258 , 244 , 230,
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217 , 205 , 193 , 183 , 172 , 163 , 154 , 145 , 137 , 129 , 122 , 115,
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108 , 102 , 96 , 91 , 86 , 81 , 77 , 72 , 68 , 64 , 61 , 57 },
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{1724, 1628, 1536, 1450, 1368, 1292, 1220, 1150, 1086, 1026, 968 , 914,
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862 , 814 , 768 , 725 , 684 , 646 , 610 , 575 , 543 , 513 , 484 , 457,
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431 , 407 , 384 , 363 , 342 , 323 , 305 , 288 , 272 , 256 , 242 , 228,
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216 , 203 , 192 , 181 , 171 , 161 , 152 , 144 , 136 , 128 , 121 , 114,
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108 , 101 , 96 , 90 , 85 , 80 , 76 , 72 , 68 , 64 , 60 , 57 }};
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bool Module::load(Common::SeekableReadStream &st, int offs) {
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st.seek(offs);
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st.read(songname, 20);
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songname[20] = '\0';
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for (int i = 0; i < NUM_SAMPLES; ++i) {
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st.read(sample[i].name, 22);
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sample[i].name[22] = '\0';
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sample[i].len = 2 * st.readUint16BE();
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sample[i].finetune = st.readByte();
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assert(sample[i].finetune < 0x10);
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sample[i].vol = st.readByte();
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sample[i].repeat = 2 * st.readUint16BE();
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sample[i].replen = 2 * st.readUint16BE();
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}
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songlen = st.readByte();
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undef = st.readByte();
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st.read(songpos, 128);
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st.read(sig, 4);
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if (memcmp(sig, "M.K.", 4)) {
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warning("Expected 'M.K.' in protracker module");
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return false;
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}
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int maxpattern = 0;
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for (int i = 0; i < 128; ++i)
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if (maxpattern < songpos[i])
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maxpattern = songpos[i];
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pattern = new pattern_t[maxpattern + 1];
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for (int i = 0; i <= maxpattern; ++i) {
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for (int j = 0; j < 64; ++j) {
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for (int k = 0; k < 4; ++k) {
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uint32 note = st.readUint32BE();
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pattern[i][j][k].sample = (note & 0xf0000000) >> 24 | (note & 0x0000f000) >> 12;
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pattern[i][j][k].period = (note >> 16) & 0xfff;
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pattern[i][j][k].effect = note & 0xfff;
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pattern[i][j][k].note = periodToNote((note >> 16) & 0xfff);
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}
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}
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}
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for (int i = 0; i < NUM_SAMPLES; ++i) {
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if (offs == 0) {
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// Store locations for modules that use common samples
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memcpy(commonSamples[i].name, sample[i].name, 22);
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commonSamples[i].len = sample[i].len;
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commonSamples[i].offs = st.pos();
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}
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if (!sample[i].len) {
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sample[i].data = 0;
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} else {
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if (offs != 0) {
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// For modules that use common samples
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for (int j = 0; j < NUM_SAMPLES; ++j) {
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if (!scumm_stricmp((const char *)commonSamples[j].name, (const char *)sample[i].name)) {
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sample[i].len = commonSamples[j].len;
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st.seek(commonSamples[j].offs);
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break;
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}
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}
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}
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sample[i].data = new int8[sample[i].len];
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st.read((byte *)sample[i].data, sample[i].len);
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}
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}
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return true;
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}
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Module::Module() {
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pattern = 0;
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for (int i = 0; i < NUM_SAMPLES; ++i) {
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sample[i].data = 0;
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}
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}
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Module::~Module() {
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delete[] pattern;
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for (int i = 0; i < NUM_SAMPLES; ++i) {
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delete[] sample[i].data;
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}
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}
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byte Module::periodToNote(int16 period, byte finetune) {
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int16 diff1;
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int16 diff2;
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diff1 = ABS(periods[finetune][0] - period);
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if (diff1 == 0)
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return 0;
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for (int i = 1; i < 60; i++) {
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diff2 = ABS(periods[finetune][i] - period);
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if (diff2 == 0)
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return i;
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else if (diff2 > diff1)
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return i-1;
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diff1 = diff2;
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}
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return 59;
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}
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int16 Module::noteToPeriod(byte note, byte finetune) {
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if (finetune > 15)
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finetune = 15;
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if (note > 59)
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note = 59;
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return periods[finetune][note];
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}
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} // End of namespace Modules
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