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scummvm/engines/scumm/smush/codec47.cpp

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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
#include "common/endian.h"
#include "common/util.h"
#include "scumm/bomp.h"
#include "scumm/smush/codec47.h"
namespace Scumm {
#if defined(SCUMM_NEED_ALIGNMENT)
#define COPY_4X1_LINE(dst, src) \
do { \
(dst)[0] = (src)[0]; \
(dst)[1] = (src)[1]; \
(dst)[2] = (src)[2]; \
(dst)[3] = (src)[3]; \
} while (0)
#define COPY_2X1_LINE(dst, src) \
do { \
(dst)[0] = (src)[0]; \
(dst)[1] = (src)[1]; \
} while (0)
#else /* SCUMM_NEED_ALIGNMENT */
#define COPY_4X1_LINE(dst, src) \
*(uint32 *)(dst) = *(const uint32 *)(src)
#define COPY_2X1_LINE(dst, src) \
*(uint16 *)(dst) = *(const uint16 *)(src)
#endif
#define FILL_4X1_LINE(dst, val) \
do { \
(dst)[0] = val; \
(dst)[1] = val; \
(dst)[2] = val; \
(dst)[3] = val; \
} while (0)
#define FILL_2X1_LINE(dst, val) \
do { \
(dst)[0] = val; \
(dst)[1] = val; \
} while (0)
static const int8 codec47_table_small1[] = {
0, 1, 2, 3, 3, 3, 3, 2, 1, 0, 0, 0, 1, 2, 2, 1,
};
static const int8 codec47_table_small2[] = {
0, 0, 0, 0, 1, 2, 3, 3, 3, 3, 2, 1, 1, 1, 2, 2,
};
static const int8 codec47_table_big1[] = {
0, 2, 5, 7, 7, 7, 7, 7, 7, 5, 2, 0, 0, 0, 0, 0,
};
static const int8 codec47_table_big2[] = {
0, 0, 0, 0, 1, 3, 4, 6, 7, 7, 7, 7, 6, 4, 3, 1,
};
static const int8 codec47_table[] = {
0, 0, -1, -43, 6, -43, -9, -42, 13, -41,
-16, -40, 19, -39, -23, -36, 26, -34, -2, -33,
4, -33, -29, -32, -9, -32, 11, -31, -16, -29,
32, -29, 18, -28, -34, -26, -22, -25, -1, -25,
3, -25, -7, -24, 8, -24, 24, -23, 36, -23,
-12, -22, 13, -21, -38, -20, 0, -20, -27, -19,
-4, -19, 4, -19, -17, -18, -8, -17, 8, -17,
18, -17, 28, -17, 39, -17, -12, -15, 12, -15,
-21, -14, -1, -14, 1, -14, -41, -13, -5, -13,
5, -13, 21, -13, -31, -12, -15, -11, -8, -11,
8, -11, 15, -11, -2, -10, 1, -10, 31, -10,
-23, -9, -11, -9, -5, -9, 4, -9, 11, -9,
42, -9, 6, -8, 24, -8, -18, -7, -7, -7,
-3, -7, -1, -7, 2, -7, 18, -7, -43, -6,
-13, -6, -4, -6, 4, -6, 8, -6, -33, -5,
-9, -5, -2, -5, 0, -5, 2, -5, 5, -5,
13, -5, -25, -4, -6, -4, -3, -4, 3, -4,
9, -4, -19, -3, -7, -3, -4, -3, -2, -3,
-1, -3, 0, -3, 1, -3, 2, -3, 4, -3,
6, -3, 33, -3, -14, -2, -10, -2, -5, -2,
-3, -2, -2, -2, -1, -2, 0, -2, 1, -2,
2, -2, 3, -2, 5, -2, 7, -2, 14, -2,
19, -2, 25, -2, 43, -2, -7, -1, -3, -1,
-2, -1, -1, -1, 0, -1, 1, -1, 2, -1,
3, -1, 10, -1, -5, 0, -3, 0, -2, 0,
-1, 0, 1, 0, 2, 0, 3, 0, 5, 0,
7, 0, -10, 1, -7, 1, -3, 1, -2, 1,
-1, 1, 0, 1, 1, 1, 2, 1, 3, 1,
-43, 2, -25, 2, -19, 2, -14, 2, -5, 2,
-3, 2, -2, 2, -1, 2, 0, 2, 1, 2,
2, 2, 3, 2, 5, 2, 7, 2, 10, 2,
14, 2, -33, 3, -6, 3, -4, 3, -2, 3,
-1, 3, 0, 3, 1, 3, 2, 3, 4, 3,
19, 3, -9, 4, -3, 4, 3, 4, 7, 4,
25, 4, -13, 5, -5, 5, -2, 5, 0, 5,
2, 5, 5, 5, 9, 5, 33, 5, -8, 6,
-4, 6, 4, 6, 13, 6, 43, 6, -18, 7,
-2, 7, 0, 7, 2, 7, 7, 7, 18, 7,
-24, 8, -6, 8, -42, 9, -11, 9, -4, 9,
5, 9, 11, 9, 23, 9, -31, 10, -1, 10,
2, 10, -15, 11, -8, 11, 8, 11, 15, 11,
31, 12, -21, 13, -5, 13, 5, 13, 41, 13,
-1, 14, 1, 14, 21, 14, -12, 15, 12, 15,
-39, 17, -28, 17, -18, 17, -8, 17, 8, 17,
17, 18, -4, 19, 0, 19, 4, 19, 27, 19,
38, 20, -13, 21, 12, 22, -36, 23, -24, 23,
-8, 24, 7, 24, -3, 25, 1, 25, 22, 25,
34, 26, -18, 28, -32, 29, 16, 29, -11, 31,
9, 32, 29, 32, -4, 33, 2, 33, -26, 34,
23, 36, -19, 39, 16, 40, -13, 41, 9, 42,
-6, 43, 1, 43, 0, 0, 0, 0, 0, 0
};
void Codec47Decoder::makeTablesInterpolation(int param) {
int32 variable1, variable2;
int32 b1, b2;
int32 value_table47_1_2, value_table47_1_1, value_table47_2_2, value_table47_2_1;
int32 tableSmallBig[64], tmp, s;
const int8 *table47_1 = 0, *table47_2 = 0;
int32 *ptr_small_big;
byte *ptr;
int i, x, y;
if (param == 8) {
table47_1 = codec47_table_big1;
table47_2 = codec47_table_big2;
ptr = _tableBig;
for (i = 0; i < 256; i++) {
ptr[384] = 0;
ptr[385] = 0;
ptr += 388;
}
} else if (param == 4) {
table47_1 = codec47_table_small1;
table47_2 = codec47_table_small2;
ptr = _tableSmall;
for (i = 0; i < 256; i++) {
ptr[96] = 0;
ptr[97] = 0;
ptr += 128;
}
} else {
error("Codec47Decoder::makeTablesInterpolation: unknown param %d", param);
}
s = 0;
for (x = 0; x < 16; x++) {
value_table47_1_1 = table47_1[x];
value_table47_2_1 = table47_2[x];
for (y = 0; y < 16; y++) {
value_table47_1_2 = table47_1[y];
value_table47_2_2 = table47_2[y];
if (value_table47_2_1 == 0) {
b1 = 0;
} else if (value_table47_2_1 == param - 1) {
b1 = 1;
} else if (value_table47_1_1 == 0) {
b1 = 2;
} else if (value_table47_1_1 == param - 1) {
b1 = 3;
} else {
b1 = 4;
}
if (value_table47_2_2 == 0) {
b2 = 0;
} else if (value_table47_2_2 == param - 1) {
b2 = 1;
} else if (value_table47_1_2 == 0) {
b2 = 2;
} else if (value_table47_1_2 == param - 1) {
b2 = 3;
} else {
b2 = 4;
}
memset(tableSmallBig, 0, param * param * 4);
variable2 = ABS(value_table47_2_2 - value_table47_2_1);
tmp = ABS(value_table47_1_2 - value_table47_1_1);
if (variable2 <= tmp) {
variable2 = tmp;
}
for (variable1 = 0; variable1 <= variable2; variable1++) {
int32 variable3, variable4;
if (variable2 > 0) {
// Linearly interpolate between value_table47_1_1 and value_table47_1_2
// respectively value_table47_2_1 and value_table47_2_2.
variable4 = (value_table47_1_1 * variable1 + value_table47_1_2 * (variable2 - variable1) + variable2 / 2) / variable2;
variable3 = (value_table47_2_1 * variable1 + value_table47_2_2 * (variable2 - variable1) + variable2 / 2) / variable2;
} else {
variable4 = value_table47_1_1;
variable3 = value_table47_2_1;
}
ptr_small_big = &tableSmallBig[param * variable3 + variable4];
*ptr_small_big = 1;
if ((b1 == 2 && b2 == 3) || (b2 == 2 && b1 == 3) ||
(b1 == 0 && b2 != 1) || (b2 == 0 && b1 != 1)) {
if (variable3 >= 0) {
i = variable3 + 1;
while (i--) {
*ptr_small_big = 1;
ptr_small_big -= param;
}
}
} else if ((b2 != 0 && b1 == 1) || (b1 != 0 && b2 == 1)) {
if (param > variable3) {
i = param - variable3;
while (i--) {
*ptr_small_big = 1;
ptr_small_big += param;
}
}
} else if ((b1 == 2 && b2 != 3) || (b2 == 2 && b1 != 3)) {
if (variable4 >= 0) {
i = variable4 + 1;
while (i--) {
*(ptr_small_big--) = 1;
}
}
} else if ((b1 == 0 && b2 == 1) || (b2 == 0 && b1 == 1) ||
(b1 == 3 && b2 != 2) || (b2 == 3 && b1 != 2)) {
if (param > variable4) {
i = param - variable4;
while (i--) {
*(ptr_small_big++) = 1;
}
}
}
}
if (param == 8) {
for (i = 64 - 1; i >= 0; i--) {
if (tableSmallBig[i] != 0) {
_tableBig[256 + s + _tableBig[384 + s]] = (byte)i;
_tableBig[384 + s]++;
} else {
_tableBig[320 + s + _tableBig[385 + s]] = (byte)i;
_tableBig[385 + s]++;
}
}
s += 388;
}
if (param == 4) {
for (i = 16 - 1; i >= 0; i--) {
if (tableSmallBig[i] != 0) {
_tableSmall[64 + s + _tableSmall[96 + s]] = (byte)i;
_tableSmall[96 + s]++;
} else {
_tableSmall[80 + s + _tableSmall[97 + s]] = (byte)i;
_tableSmall[97 + s]++;
}
}
s += 128;
}
}
}
}
void Codec47Decoder::makeTables47(int width) {
if (_lastTableWidth == width)
return;
_lastTableWidth = width;
int32 a, c, d;
int16 tmp;
for (int l = 0; l < 512; l += 2) {
_table[l / 2] = (int16)(codec47_table[l + 1] * width + codec47_table[l]);
}
a = 0;
c = 0;
do {
for (d = 0; d < _tableSmall[96 + c]; d++) {
tmp = _tableSmall[64 + c + d];
tmp = (int16)((byte)(tmp >> 2) * width + (tmp & 3));
_tableSmall[c + d * 2] = (byte)tmp;
_tableSmall[c + d * 2 + 1] = tmp >> 8;
}
for (d = 0; d < _tableSmall[97 + c]; d++) {
tmp = _tableSmall[80 + c + d];
tmp = (int16)((byte)(tmp >> 2) * width + (tmp & 3));
_tableSmall[32 + c + d * 2] = (byte)tmp;
_tableSmall[32 + c + d * 2 + 1] = tmp >> 8;
}
for (d = 0; d < _tableBig[384 + a]; d++) {
tmp = _tableBig[256 + a + d];
tmp = (int16)((byte)(tmp >> 3) * width + (tmp & 7));
_tableBig[a + d * 2] = (byte)tmp;
_tableBig[a + d * 2 + 1] = tmp >> 8;
}
for (d = 0; d < _tableBig[385 + a]; d++) {
tmp = _tableBig[320 + a + d];
tmp = (int16)((byte)(tmp >> 3) * width + (tmp & 7));
_tableBig[128 + a + d * 2] = (byte)tmp;
_tableBig[128 + a + d * 2 + 1] = tmp >> 8;
}
a += 388;
c += 128;
} while (c < 32768);
}
#ifdef USE_ARM_SMUSH_ASM
extern "C" void ARM_Smush_decode2( byte *dst,
const byte *src,
int width,
int height,
const byte *param_ptr,
int16 *_table,
byte *_tableBig,
int32 offset1,
int32 offset2,
byte *_tableSmall);
#define decode2(SRC,DST,WIDTH,HEIGHT,PARAM) \
ARM_Smush_decode2(SRC,DST,WIDTH,HEIGHT,PARAM,_table,_tableBig, \
_offset1,_offset2,_tableSmall)
#else
void Codec47Decoder::level3(byte *d_dst) {
int32 tmp;
byte code = *_d_src++;
if (code < 0xF8) {
tmp = _table[code] + _offset1;
COPY_2X1_LINE(d_dst, d_dst + tmp);
COPY_2X1_LINE(d_dst + _d_pitch, d_dst + _d_pitch + tmp);
} else if (code == 0xFF) {
COPY_2X1_LINE(d_dst, _d_src + 0);
COPY_2X1_LINE(d_dst + _d_pitch, _d_src + 2);
_d_src += 4;
} else if (code == 0xFE) {
byte t = *_d_src++;
FILL_2X1_LINE(d_dst, t);
FILL_2X1_LINE(d_dst + _d_pitch, t);
} else if (code == 0xFC) {
tmp = _offset2;
COPY_2X1_LINE(d_dst, d_dst + tmp);
COPY_2X1_LINE(d_dst + _d_pitch, d_dst + _d_pitch + tmp);
} else {
byte t = _paramPtr[code];
FILL_2X1_LINE(d_dst, t);
FILL_2X1_LINE(d_dst + _d_pitch, t);
}
}
void Codec47Decoder::level2(byte *d_dst) {
int32 tmp;
byte code = *_d_src++;
int i;
if (code < 0xF8) {
tmp = _table[code] + _offset1;
for (i = 0; i < 4; i++) {
COPY_4X1_LINE(d_dst, d_dst + tmp);
d_dst += _d_pitch;
}
} else if (code == 0xFF) {
level3(d_dst);
d_dst += 2;
level3(d_dst);
d_dst += _d_pitch * 2 - 2;
level3(d_dst);
d_dst += 2;
level3(d_dst);
} else if (code == 0xFE) {
byte t = *_d_src++;
for (i = 0; i < 4; i++) {
FILL_4X1_LINE(d_dst, t);
d_dst += _d_pitch;
}
} else if (code == 0xFD) {
byte *tmp_ptr = _tableSmall + *_d_src++ * 128;
int32 l = tmp_ptr[96];
byte val = *_d_src++;
int16 *tmp_ptr2 = (int16 *)tmp_ptr;
while (l--) {
*(d_dst + READ_LE_UINT16(tmp_ptr2)) = val;
tmp_ptr2++;
}
l = tmp_ptr[97];
val = *_d_src++;
tmp_ptr2 = (int16 *)(tmp_ptr + 32);
while (l--) {
*(d_dst + READ_LE_UINT16(tmp_ptr2)) = val;
tmp_ptr2++;
}
} else if (code == 0xFC) {
tmp = _offset2;
for (i = 0; i < 4; i++) {
COPY_4X1_LINE(d_dst, d_dst + tmp);
d_dst += _d_pitch;
}
} else {
byte t = _paramPtr[code];
for (i = 0; i < 4; i++) {
FILL_4X1_LINE(d_dst, t);
d_dst += _d_pitch;
}
}
}
void Codec47Decoder::level1(byte *d_dst) {
int32 tmp, tmp2;
byte code = *_d_src++;
int i;
if (code < 0xF8) {
tmp2 = _table[code] + _offset1;
for (i = 0; i < 8; i++) {
COPY_4X1_LINE(d_dst + 0, d_dst + tmp2);
COPY_4X1_LINE(d_dst + 4, d_dst + tmp2 + 4);
d_dst += _d_pitch;
}
} else if (code == 0xFF) {
level2(d_dst);
d_dst += 4;
level2(d_dst);
d_dst += _d_pitch * 4 - 4;
level2(d_dst);
d_dst += 4;
level2(d_dst);
} else if (code == 0xFE) {
byte t = *_d_src++;
for (i = 0; i < 8; i++) {
FILL_4X1_LINE(d_dst, t);
FILL_4X1_LINE(d_dst + 4, t);
d_dst += _d_pitch;
}
} else if (code == 0xFD) {
tmp = *_d_src++;
byte *tmp_ptr = _tableBig + tmp * 388;
byte l = tmp_ptr[384];
byte val = *_d_src++;
int16 *tmp_ptr2 = (int16 *)tmp_ptr;
while (l--) {
*(d_dst + READ_LE_UINT16(tmp_ptr2)) = val;
tmp_ptr2++;
}
l = tmp_ptr[385];
val = *_d_src++;
tmp_ptr2 = (int16 *)(tmp_ptr + 128);
while (l--) {
*(d_dst + READ_LE_UINT16(tmp_ptr2)) = val;
tmp_ptr2++;
}
} else if (code == 0xFC) {
tmp2 = _offset2;
for (i = 0; i < 8; i++) {
COPY_4X1_LINE(d_dst + 0, d_dst + tmp2);
COPY_4X1_LINE(d_dst + 4, d_dst + tmp2 + 4);
d_dst += _d_pitch;
}
} else {
byte t = _paramPtr[code];
for (i = 0; i < 8; i++) {
FILL_4X1_LINE(d_dst, t);
FILL_4X1_LINE(d_dst + 4, t);
d_dst += _d_pitch;
}
}
}
void Codec47Decoder::decode2(byte *dst, const byte *src, int width, int height, const byte *param_ptr) {
_d_src = src;
_paramPtr = param_ptr - 0xf8;
int bw = (width + 7) / 8;
int bh = (height + 7) / 8;
int next_line = width * 7;
_d_pitch = width;
do {
int tmp_bw = bw;
do {
level1(dst);
dst += 8;
} while (--tmp_bw);
dst += next_line;
} while (--bh);
}
#endif
Codec47Decoder::Codec47Decoder(int width, int height) {
_width = width;
_height = height;
_tableBig = (byte *)malloc(256 * 388);
_tableSmall = (byte *)malloc(256 * 128);
makeTablesInterpolation(4);
makeTablesInterpolation(8);
_frameSize = _width * _height;
_deltaSize = _frameSize * 3;
_deltaBuf = (byte *)malloc(_deltaSize);
_deltaBufs[0] = _deltaBuf;
_deltaBufs[1] = _deltaBuf + _frameSize;
_curBuf = _deltaBuf + _frameSize * 2;
}
Codec47Decoder::~Codec47Decoder() {
if (_tableBig) {
free(_tableBig);
_tableBig = NULL;
}
if (_tableSmall) {
free(_tableSmall);
_tableSmall = NULL;
}
_lastTableWidth = -1;
if (_deltaBuf) {
free(_deltaBuf);
_deltaSize = 0;
_deltaBuf = NULL;
_deltaBufs[0] = NULL;
_deltaBufs[1] = NULL;
}
}
bool Codec47Decoder::decode(byte *dst, const byte *src) {
_offset1 = _deltaBufs[1] - _curBuf;
_offset2 = _deltaBufs[0] - _curBuf;
int32 seq_nb = READ_LE_UINT16(src + 0);
const byte *gfx_data = src + 26;
if (seq_nb == 0) {
makeTables47(_width);
memset(_deltaBufs[0], src[12], _frameSize);
memset(_deltaBufs[1], src[13], _frameSize);
_prevSeqNb = -1;
}
if ((src[4] & 1) != 0) {
gfx_data += 32896;
}
switch (src[2]) {
case 0:
memcpy(_curBuf, gfx_data, _frameSize);
break;
case 1:
// Used by Outlaws, but not by any SCUMM game.
error("codec47: not implemented decode1 proc");
break;
case 2:
if (seq_nb == _prevSeqNb + 1) {
decode2(_curBuf, gfx_data, _width, _height, src + 8);
}
break;
case 3:
memcpy(_curBuf, _deltaBufs[1], _frameSize);
break;
case 4:
memcpy(_curBuf, _deltaBufs[0], _frameSize);
break;
case 5:
bompDecodeLine(_curBuf, gfx_data, READ_LE_UINT32(src + 14));
break;
}
memcpy(dst, _curBuf, _frameSize);
if (seq_nb == _prevSeqNb + 1) {
if (src[3] == 1) {
SWAP(_curBuf, _deltaBufs[1]);
} else if (src[3] == 2) {
SWAP(_deltaBufs[0], _deltaBufs[1]);
SWAP(_deltaBufs[1], _curBuf);
}
}
_prevSeqNb = seq_nb;
return true;
}
} // End of namespace Scumm
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