23 |
#define CVAL(p) (*(p++)) |
#define CVAL(p) (*(p++)) |
24 |
#define SVAL(p) ((*((p++) + 1) << 8) | CVAL(p)) |
#define SVAL(p) ((*((p++) + 1) << 8) | CVAL(p)) |
25 |
|
|
26 |
#define REPEAT(statement) { while ((count > 0) && (x < width)) { statement; count--; x++; } } |
#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
27 |
#define MASK_UPDATE() { mixmask <<= 1; if (mixmask == 0) { mask = CVAL(input); mixmask = 1; } } |
|
28 |
|
#define REPEAT(statement) \ |
29 |
|
{ \ |
30 |
|
while((count & ~0x7) && ((x+8) < width)) \ |
31 |
|
UNROLL8( statement; count--; x++; ); \ |
32 |
|
\ |
33 |
|
while((count > 0) && (x < width)) { statement; count--; x++; } \ |
34 |
|
} |
35 |
|
|
36 |
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#define MASK_UPDATE() \ |
37 |
|
{ \ |
38 |
|
mixmask <<= 1; \ |
39 |
|
if (mixmask == 0) \ |
40 |
|
{ \ |
41 |
|
mask = fom_mask ? fom_mask : CVAL(input); \ |
42 |
|
mixmask = 1; \ |
43 |
|
} \ |
44 |
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} |
45 |
|
|
46 |
BOOL |
BOOL |
47 |
bitmap_decompress(unsigned char *output, int width, int height, |
bitmap_decompress(unsigned char *output, int width, int height, |
53 |
int lastopcode = -1, insertmix = False, bicolour = False; |
int lastopcode = -1, insertmix = False, bicolour = False; |
54 |
uint8 code, colour1 = 0, colour2 = 0; |
uint8 code, colour1 = 0, colour2 = 0; |
55 |
uint8 mixmask, mask = 0, mix = 0xff; |
uint8 mixmask, mask = 0, mix = 0xff; |
56 |
|
int fom_mask = 0; |
57 |
|
|
58 |
while (input < end) |
while (input < end) |
59 |
{ |
{ |
60 |
|
fom_mask = 0; |
61 |
code = CVAL(input); |
code = CVAL(input); |
62 |
opcode = code >> 4; |
opcode = code >> 4; |
63 |
|
|
74 |
|
|
75 |
case 0xf: |
case 0xf: |
76 |
opcode = code & 0xf; |
opcode = code & 0xf; |
77 |
count = (opcode < 13) ? SVAL(input) : 1; |
if (opcode < 9) |
78 |
|
count = SVAL(input); |
79 |
|
else |
80 |
|
count = (opcode < 0xb) ? 8 : 1; |
81 |
offset = 0; |
offset = 0; |
82 |
break; |
break; |
83 |
|
|
107 |
} |
} |
108 |
|
|
109 |
/* Read preliminary data */ |
/* Read preliminary data */ |
|
mixmask = 0; |
|
110 |
switch (opcode) |
switch (opcode) |
111 |
{ |
{ |
112 |
case 0: /* Fill */ |
case 0: /* Fill */ |
124 |
mix = CVAL(input); |
mix = CVAL(input); |
125 |
opcode -= 5; |
opcode -= 5; |
126 |
break; |
break; |
127 |
|
case 9: /* FillOrMix_1 */ |
128 |
|
mask = 0x03; |
129 |
|
opcode = 0x02; |
130 |
|
fom_mask = 3; |
131 |
|
break; |
132 |
|
case 0x0a: /* FillOrMix_2 */ |
133 |
|
mask = 0x05; |
134 |
|
opcode = 0x02; |
135 |
|
fom_mask = 5; |
136 |
|
break; |
137 |
|
|
138 |
} |
} |
139 |
|
|
140 |
lastopcode = opcode; |
lastopcode = opcode; |
141 |
|
mixmask = 0; |
142 |
|
|
143 |
/* Output body */ |
/* Output body */ |
144 |
while (count > 0) |
while (count > 0) |
235 |
); |
); |
236 |
break; |
break; |
237 |
|
|
238 |
case 13: /* White */ |
case 0xd: /* White */ |
239 |
REPEAT(line[x] = 0xff); |
REPEAT(line[x] = 0xff); |
240 |
break; |
break; |
241 |
|
|
242 |
case 14: /* Black */ |
case 0xe: /* Black */ |
243 |
REPEAT(line[x] = 0x00); |
REPEAT(line[x] = 0x00); |
244 |
break; |
break; |
245 |
|
|