mirror of
https://github.com/libretro/scummvm.git
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695 lines
17 KiB
C++
695 lines
17 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001-2005 The ScummVM project
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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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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* $Header$
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*/
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#include "stdafx.h"
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#include "common/scummsys.h"
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#include "common/util.h"
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namespace Scumm {
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namespace BundleCodecs {
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uint32 decode12BitsSample(const byte *src, byte **dst, uint32 size) {
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uint32 loop_size = size / 3;
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uint32 s_size = loop_size * 4;
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byte *ptr = *dst = (byte *)malloc(s_size);
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uint32 tmp;
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while (loop_size--) {
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byte v1 = *src++;
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byte v2 = *src++;
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byte v3 = *src++;
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tmp = ((((v2 & 0x0f) << 8) | v1) << 4) - 0x8000;
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WRITE_BE_UINT16(ptr, tmp); ptr += 2;
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tmp = ((((v2 & 0xf0) << 4) | v3) << 4) - 0x8000;
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WRITE_BE_UINT16(ptr, tmp); ptr += 2;
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}
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return s_size;
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}
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/*
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* The "IMC" codec below (see cases 13 & 15 in decompressCodec) is actually a
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* variant of the IMA codec, see also
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* <http://home.pcisys.net/~melanson/codecs/simpleaudio.html>
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* Based on that information, we might be able to simplify this code.
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* Thanks to LordNightmare for helping me figure this out :-)
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*/
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#ifdef __PALM_OS__
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static byte *_destImcTable = NULL; // save 23k of memory !
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static uint32 *_destImcTable2 = NULL;
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static const int16 *imcTable;
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#else
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static byte _destImcTable[89];
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static uint32 _destImcTable2[89 * 64];
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static const int16 imcTable[] = {
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0x0007, 0x0008, 0x0009, 0x000A, 0x000B, 0x000C, 0x000D, 0x000E, 0x0010, 0x0011,
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0x0013, 0x0015, 0x0017, 0x0019, 0x001C, 0x001F, 0x0022, 0x0025, 0x0029, 0x002D,
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0x0032, 0x0037, 0x003C, 0x0042, 0x0049, 0x0050, 0x0058, 0x0061, 0x006B, 0x0076,
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0x0082, 0x008F, 0x009D, 0x00AD, 0x00BE, 0x00D1, 0x00E6, 0x00FD, 0x0117, 0x0133,
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0x0151, 0x0173, 0x0198, 0x01C1, 0x01EE, 0x0220, 0x0256, 0x0292, 0x02D4, 0x031C,
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0x036C, 0x03C3, 0x0424, 0x048E, 0x0502, 0x0583, 0x0610, 0x06AB, 0x0756, 0x0812,
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0x08E0, 0x09C3, 0x0ABD, 0x0BD0, 0x0CFF, 0x0E4C, 0x0FBA, 0x114C, 0x1307, 0x14EE,
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0x1706, 0x1954, 0x1BDC, 0x1EA5, 0x21B6, 0x2515, 0x28CA, 0x2CDF, 0x315B, 0x364B,
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0x3BB9, 0x41B2, 0x4844, 0x4F7E, 0x5771, 0x602F, 0x69CE, 0x7462, 0x7FFF
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};
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#endif
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static const byte imxOtherTable[6][128] = {
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{
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0xFF, 0x04, 0xFF, 0x04
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},
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{
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0xFF, 0xFF, 0x02, 0x08, 0xFF, 0xFF, 0x02, 0x08
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},
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{
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0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x02, 0x04, 0x06,
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0xFF, 0xFF, 0xFF, 0xFF, 0x01, 0x02, 0x04, 0x06
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},
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{
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0x01, 0x02, 0x04, 0x06, 0x08, 0x0C, 0x10, 0x20,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0x01, 0x02, 0x04, 0x06, 0x08, 0x0C, 0x10, 0x20
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},
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{
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0x01, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E,
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0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x20,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0x01, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E,
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0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x20
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},
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{
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
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0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10,
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0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
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0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
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0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
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0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10,
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0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18,
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0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20
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}
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};
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static const byte imxShortTable[] = {
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0, 0, 1, 3, 7, 15, 31, 63
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};
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#ifdef __PALM_OS__
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void releaseImcTables() {
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free(_destImcTable);
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free(_destImcTable2);
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}
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#endif
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void initializeImcTables() {
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int32 destTablePos = 0;
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int32 pos = 0;
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#ifdef __PALM_OS__
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if (!_destImcTable) _destImcTable = (byte *)calloc(89, sizeof(byte));
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if (!_destImcTable2) _destImcTable2 = (uint32 *)calloc(89 * 64, sizeof(uint32));
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#endif
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do {
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byte put = 1;
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int32 tableValue = ((imcTable[pos] * 4) / 7) / 2;
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while (tableValue != 0) {
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tableValue /= 2;
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put++;
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}
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if (put < 3) {
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put = 3;
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}
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if (put > 8) {
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put = 8;
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}
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put--;
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assert(pos < 89);
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_destImcTable[pos] = put;
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} while (++pos <= 88);
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_destImcTable[89] = 0;
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for (int n = 0; n < 64; n++) {
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pos = 0;
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destTablePos = n;
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do {
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int32 count = 32;
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int32 put = 0;
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int32 tableValue = imcTable[pos];
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do {
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if ((count & n) != 0) {
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put += tableValue;
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}
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count /= 2;
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tableValue /= 2;
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} while (count != 0);
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assert(destTablePos < 89 * 64);
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_destImcTable2[destTablePos] = put;
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destTablePos += 64;
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} while (++pos <= 88);
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}
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}
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#define NextBit \
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do { \
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bit = mask & 1; \
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mask >>= 1; \
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if (!--bitsleft) { \
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mask = READ_LE_UINT16(srcptr); \
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srcptr += 2; \
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bitsleft = 16; \
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} \
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} while (0)
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static int32 compDecode(byte *src, byte *dst) {
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byte *result, *srcptr = src, *dstptr = dst;
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int data, size, bit, bitsleft = 16, mask = READ_LE_UINT16(srcptr);
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srcptr += 2;
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for (;;) {
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NextBit;
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if (bit) {
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*dstptr++ = *srcptr++;
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} else {
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NextBit;
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if (!bit) {
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NextBit;
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size = bit << 1;
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NextBit;
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size = (size | bit) + 3;
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data = *srcptr++ | 0xffffff00;
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} else {
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data = *srcptr++;
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size = *srcptr++;
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data |= 0xfffff000 + ((size & 0xf0) << 4);
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size = (size & 0x0f) + 3;
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if (size == 3)
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if (((*srcptr++) + 1) == 1)
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return dstptr - dst;
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}
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result = dstptr + data;
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while (size--)
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*dstptr++ = *result++;
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}
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}
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}
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#undef NextBit
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int32 decompressCodec(int32 codec, byte *comp_input, byte *comp_output, int32 input_size) {
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int32 output_size, channels;
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int32 offset1, offset2, offset3, length, k, c, s, j, r, t, z;
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byte *src, *t_table, *p, *ptr;
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byte t_tmp1, t_tmp2;
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switch (codec) {
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case 0:
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memcpy(comp_output, comp_input, input_size);
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output_size = input_size;
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break;
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case 1:
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output_size = compDecode(comp_input, comp_output);
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break;
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case 2:
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output_size = compDecode(comp_input, comp_output);
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p = comp_output;
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for (z = 1; z < output_size; z++)
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p[z] += p[z - 1];
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break;
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case 3:
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output_size = compDecode(comp_input, comp_output);
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p = comp_output;
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for (z = 2; z < output_size; z++)
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p[z] += p[z - 1];
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for (z = 1; z < output_size; z++)
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p[z] += p[z - 1];
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break;
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case 4:
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output_size = compDecode(comp_input, comp_output);
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p = comp_output;
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for (z = 2; z < output_size; z++)
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p[z] += p[z - 1];
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for (z = 1; z < output_size; z++)
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p[z] += p[z - 1];
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t_table = (byte *)malloc(output_size);
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memset(t_table, 0, output_size);
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src = comp_output;
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length = (output_size << 3) / 12;
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k = 0;
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if (length > 0) {
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c = -12;
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s = 0;
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j = 0;
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do {
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ptr = src + length + (k >> 1);
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t_tmp2 = src[j];
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if (k & 1) {
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r = c >> 3;
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t_table[r + 2] = ((t_tmp2 & 0x0f) << 4) | (ptr[1] >> 4);
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t_table[r + 1] = (t_tmp2 & 0xf0) | (t_table[r + 1]);
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} else {
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r = s >> 3;
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t_table[r + 0] = ((t_tmp2 & 0x0f) << 4) | (ptr[0] & 0x0f);
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t_table[r + 1] = t_tmp2 >> 4;
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}
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s += 12;
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c += 12;
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k++;
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j++;
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} while (k < length);
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}
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offset1 = ((length - 1) * 3) >> 1;
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t_table[offset1 + 1] = (t_table[offset1 + 1]) | (src[length - 1] & 0xf0);
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memcpy(src, t_table, output_size);
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free(t_table);
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break;
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case 5:
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output_size = compDecode(comp_input, comp_output);
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p = comp_output;
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for (z = 2; z < output_size; z++)
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p[z] += p[z - 1];
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for (z = 1; z < output_size; z++)
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p[z] += p[z - 1];
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t_table = (byte *)malloc(output_size);
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memset(t_table, 0, output_size);
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src = comp_output;
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length = (output_size << 3) / 12;
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k = 1;
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c = 0;
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s = 12;
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t_table[0] = src[length] >> 4;
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t = length + k;
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j = 1;
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if (t > k) {
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do {
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t_tmp1 = *(src + length + (k >> 1));
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t_tmp2 = src[j - 1];
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if (k & 1) {
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r = c >> 3;
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t_table[r + 0] = (t_tmp2 & 0xf0) | t_table[r];
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t_table[r + 1] = ((t_tmp2 & 0x0f) << 4) | (t_tmp1 & 0x0f);
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} else {
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r = s >> 3;
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t_table[r + 0] = t_tmp2 >> 4;
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t_table[r - 1] = ((t_tmp2 & 0x0f) << 4) | (t_tmp1 >> 4);
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}
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s += 12;
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c += 12;
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k++;
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j++;
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} while (k < t);
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}
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memcpy(src, t_table, output_size);
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free(t_table);
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break;
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case 6:
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output_size = compDecode(comp_input, comp_output);
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p = comp_output;
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for (z = 2; z < output_size; z++)
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p[z] += p[z - 1];
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for (z = 1; z < output_size; z++)
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p[z] += p[z - 1];
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t_table = (byte *)malloc(output_size);
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memset(t_table, 0, output_size);
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src = comp_output;
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length = (output_size << 3) / 12;
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k = 0;
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c = 0;
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j = 0;
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s = -12;
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t_table[0] = src[output_size - 1];
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t_table[output_size - 1] = src[length - 1];
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t = length - 1;
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if (t > 0) {
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do {
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t_tmp1 = *(src + length + (k >> 1));
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t_tmp2 = src[j];
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if (k & 1) {
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r = s >> 3;
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t_table[r + 2] = (t_tmp2 & 0xf0) | t_table[r + 2];
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t_table[r + 3] = ((t_tmp2 & 0x0f) << 4) | (t_tmp1 >> 4);
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} else {
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r = c >> 3;
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t_table[r + 2] = t_tmp2 >> 4;
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t_table[r + 1] = ((t_tmp2 & 0x0f) << 4) | (t_tmp1 & 0x0f);
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}
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s += 12;
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c += 12;
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k++;
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j++;
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} while (k < t);
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}
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memcpy(src, t_table, output_size);
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free(t_table);
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break;
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case 10:
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output_size = compDecode(comp_input, comp_output);
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p = comp_output;
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for (z = 2; z < output_size; z++)
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p[z] += p[z - 1];
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for (z = 1; z < output_size; z++)
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p[z] += p[z - 1];
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t_table = (byte *)malloc(output_size);
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memcpy(t_table, p, output_size);
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offset1 = output_size / 3;
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offset2 = offset1 << 1;
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offset3 = offset2;
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src = comp_output;
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while (offset1--) {
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offset2 -= 2;
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offset3--;
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t_table[offset2 + 0] = src[offset1];
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t_table[offset2 + 1] = src[offset3];
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}
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src = comp_output;
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length = (output_size << 3) / 12;
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k = 0;
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if (length > 0) {
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c = -12;
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s = 0;
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do {
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j = length + (k >> 1);
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t_tmp1 = t_table[k];
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if (k & 1) {
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r = c >> 3;
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t_tmp2 = t_table[j + 1];
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src[r + 2] = ((t_tmp1 & 0x0f) << 4) | (t_tmp2 >> 4);
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src[r + 1] = (src[r + 1]) | (t_tmp1 & 0xf0);
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} else {
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r = s >> 3;
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t_tmp2 = t_table[j];
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src[r + 0] = ((t_tmp1 & 0x0f) << 4) | (t_tmp2 & 0x0f);
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src[r + 1] = t_tmp1 >> 4;
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}
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s += 12;
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c += 12;
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k++;
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} while (k < length);
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}
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offset1 = ((length - 1) * 3) >> 1;
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src[offset1 + 1] = (t_table[length] & 0xf0) | src[offset1 + 1];
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free(t_table);
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break;
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case 11:
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output_size = compDecode(comp_input, comp_output);
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p = comp_output;
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for (z = 2; z < output_size; z++)
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p[z] += p[z - 1];
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for (z = 1; z < output_size; z++)
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p[z] += p[z - 1];
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t_table = (byte *)malloc(output_size);
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memcpy(t_table, p, output_size);
|
|
|
|
offset1 = output_size / 3;
|
|
offset2 = offset1 << 1;
|
|
offset3 = offset2;
|
|
src = comp_output;
|
|
|
|
while (offset1--) {
|
|
offset2 -= 2;
|
|
offset3--;
|
|
t_table[offset2 + 0] = src[offset1];
|
|
t_table[offset2 + 1] = src[offset3];
|
|
}
|
|
|
|
src = comp_output;
|
|
length = (output_size << 3) / 12;
|
|
k = 1;
|
|
c = 0;
|
|
s = 12;
|
|
t_tmp1 = t_table[length] >> 4;
|
|
src[0] = t_tmp1;
|
|
t = length + k;
|
|
if (t > k) {
|
|
do {
|
|
j = length + (k >> 1);
|
|
t_tmp1 = t_table[k - 1];
|
|
t_tmp2 = t_table[j];
|
|
if (k & 1) {
|
|
r = c >> 3;
|
|
src[r + 0] = (src[r]) | (t_tmp1 & 0xf0);
|
|
src[r + 1] = ((t_tmp1 & 0x0f) << 4) | (t_tmp2 & 0x0f);
|
|
} else {
|
|
r = s >> 3;
|
|
src[r + 0] = t_tmp1 >> 4;
|
|
src[r - 1] = ((t_tmp1 & 0x0f) << 4) | (t_tmp2 >> 4);
|
|
}
|
|
s += 12;
|
|
c += 12;
|
|
k++;
|
|
} while (k < t);
|
|
}
|
|
free(t_table);
|
|
break;
|
|
|
|
case 12:
|
|
output_size = compDecode(comp_input, comp_output);
|
|
p = comp_output;
|
|
for (z = 2; z < output_size; z++)
|
|
p[z] += p[z - 1];
|
|
for (z = 1; z < output_size; z++)
|
|
p[z] += p[z - 1];
|
|
|
|
t_table = (byte *)malloc(output_size);
|
|
memcpy(t_table, p, output_size);
|
|
|
|
offset1 = output_size / 3;
|
|
offset2 = offset1 << 1;
|
|
offset3 = offset2;
|
|
src = comp_output;
|
|
|
|
while (offset1--) {
|
|
offset2 -= 2;
|
|
offset3--;
|
|
t_table[offset2 + 0] = src[offset1];
|
|
t_table[offset2 + 1] = src[offset3];
|
|
}
|
|
|
|
src = comp_output;
|
|
length = (output_size << 3) / 12;
|
|
k = 0;
|
|
c = 0;
|
|
s = -12;
|
|
src[0] = t_table[output_size - 1];
|
|
src[output_size - 1] = t_table[length - 1];
|
|
t = length - 1;
|
|
if (t > 0) {
|
|
do {
|
|
j = length + (k >> 1);
|
|
t_tmp1 = t_table[k];
|
|
t_tmp2 = t_table[j];
|
|
if (k & 1) {
|
|
r = s >> 3;
|
|
src[r + 2] = (src[r + 2]) | (t_tmp1 & 0xf0);
|
|
src[r + 3] = ((t_tmp1 & 0x0f) << 4) | (t_tmp2 >> 4);
|
|
} else {
|
|
r = c >> 3;
|
|
src[r + 2] = t_tmp1 >> 4;
|
|
src[r + 1] = ((t_tmp1 & 0x0f) << 4) | (t_tmp2 & 0x0f);
|
|
}
|
|
s += 12;
|
|
c += 12;
|
|
k++;
|
|
} while (k < t);
|
|
}
|
|
free(t_table);
|
|
break;
|
|
|
|
case 13:
|
|
case 15:
|
|
if (codec == 13) {
|
|
channels = 1;
|
|
} else {
|
|
channels = 2;
|
|
}
|
|
|
|
{
|
|
const int MAX_CHANNELS = 2;
|
|
int32 left, startPos, origLeft, curTableEntry, destPos, esiReg;
|
|
int16 firstWord;
|
|
byte sByte[MAX_CHANNELS] = {0, 0};
|
|
int32 sDWord1[MAX_CHANNELS] = {0, 0};
|
|
int32 sDWord2[MAX_CHANNELS] = {0, 0};
|
|
int32 tableEntrySum, imcTableEntry, curTablePos, outputWord, adder;
|
|
byte decompTable, otherTablePos, bitMask;
|
|
byte *readPos, *dst;
|
|
uint16 readWord;
|
|
|
|
assert(0 <= channels && channels <= MAX_CHANNELS);
|
|
|
|
src = comp_input;
|
|
dst = comp_output;
|
|
if (channels == 2) {
|
|
output_size = left = 0x2000;
|
|
} else {
|
|
left = 0x1000;
|
|
output_size = 0x2000;
|
|
}
|
|
firstWord = READ_BE_UINT16(src);
|
|
src += 2;
|
|
if (firstWord != 0) {
|
|
memcpy(dst, src, firstWord);
|
|
dst += firstWord;
|
|
src += firstWord;
|
|
startPos = 0;
|
|
if (channels == 2) {
|
|
left = 0x2000 - firstWord;
|
|
output_size = left;
|
|
} else {
|
|
left = 0x1000 - (firstWord >> 1);
|
|
output_size = left << 1;
|
|
}
|
|
output_size += firstWord;
|
|
} else {
|
|
startPos = 1;
|
|
for (int i = 0; i < channels; i++) {
|
|
sByte[i] = *(src++);
|
|
sDWord1[i] = READ_BE_UINT32(src);
|
|
src += 4;
|
|
sDWord2[i] = READ_BE_UINT32(src);
|
|
src += 4;
|
|
}
|
|
}
|
|
|
|
origLeft = left >> (channels - 1);
|
|
tableEntrySum = 0;
|
|
for (int l = 0; l < channels; l++) {
|
|
if (startPos != 0) {
|
|
curTablePos = sByte[l];
|
|
imcTableEntry = sDWord1[l];
|
|
outputWord = sDWord2[l];
|
|
} else {
|
|
curTablePos = 0;
|
|
imcTableEntry = 7;
|
|
outputWord = 0;
|
|
}
|
|
|
|
left = origLeft;
|
|
destPos = l << 1;
|
|
|
|
if (channels == 2) {
|
|
if (l == 0)
|
|
left++;
|
|
left >>= 1;
|
|
}
|
|
|
|
while (left--) {
|
|
curTableEntry = _destImcTable[curTablePos];
|
|
decompTable = (byte)(curTableEntry - 2);
|
|
bitMask = 2 << decompTable;
|
|
readPos = src + (tableEntrySum >> 3);
|
|
readWord = (uint16)(READ_BE_UINT16(readPos) << (tableEntrySum & 7));
|
|
otherTablePos = (byte)(readWord >> (16 - curTableEntry));
|
|
tableEntrySum += curTableEntry;
|
|
esiReg = ((imxShortTable[curTableEntry] & otherTablePos)
|
|
<< (7 - curTableEntry)) + (curTablePos * 64);
|
|
imcTableEntry >>= (curTableEntry - 1);
|
|
adder = imcTableEntry + _destImcTable2[esiReg];
|
|
if ((otherTablePos & bitMask) != 0) {
|
|
adder = -adder;
|
|
}
|
|
outputWord += adder;
|
|
|
|
// Clip outputWord to 16 bit signed, and write it into the destination stream
|
|
if (outputWord > 0x7fff)
|
|
outputWord = 0x7fff;
|
|
if (outputWord < -0x8000)
|
|
outputWord = -0x8000;
|
|
WRITE_BE_UINT16(dst + destPos, outputWord);
|
|
|
|
// Adjust the curTablePos / imcTableEntry
|
|
assert(decompTable < 6);
|
|
curTablePos += (signed char)imxOtherTable[decompTable][otherTablePos];
|
|
if (curTablePos > 88)
|
|
curTablePos = 88;
|
|
if (curTablePos < 0)
|
|
curTablePos = 0;
|
|
imcTableEntry = imcTable[curTablePos];
|
|
|
|
destPos += channels << 1;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
error("BundleCodecs::decompressCodec() Unknown codec %d!", (int)codec);
|
|
output_size = 0;
|
|
break;
|
|
}
|
|
|
|
return output_size;
|
|
}
|
|
|
|
} // End of namespace BundleCodecs
|
|
|
|
} // End of namespace Scumm
|
|
|
|
#ifdef __PALM_OS__
|
|
#include "scumm_globals.h"
|
|
|
|
_GINIT(DimuseCodecs)
|
|
_GSETPTR(Scumm::BundleCodecs::imcTable, GBVARS_IMCTABLE_INDEX, int16, GBVARS_SCUMM)
|
|
_GEND
|
|
|
|
_GRELEASE(DimuseCodecs)
|
|
_GRELEASEPTR(GBVARS_IMCTABLE_INDEX, GBVARS_SCUMM)
|
|
_GEND
|
|
|
|
#endif
|