source: trunk/src/opengl/glide/cvg/texus/dequant.c

Last change on this file was 6653, checked in by bird, 24 years ago

Added $Id:$ keyword.
File size: 10.9 KB
Line 
1/* $Id: dequant.c,v 1.2 2001-09-05 14:30:44 bird Exp $ */
2
3/*
4** THIS SOFTWARE IS SUBJECT TO COPYRIGHT PROTECTION AND IS OFFERED ONLY
5** PURSUANT TO THE 3DFX GLIDE GENERAL PUBLIC LICENSE. THERE IS NO RIGHT
6** TO USE THE GLIDE TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF 3DFX
7** INTERACTIVE, INC. A COPY OF THIS LICENSE MAY BE OBTAINED FROM THE
8** DISTRIBUTOR OR BY CONTACTING 3DFX INTERACTIVE INC(info@3dfx.com).
9** THIS PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
10** EXPRESSED OR IMPLIED. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A
11** FULL TEXT OF THE NON-WARRANTY PROVISIONS.
12**
13** USE, DUPLICATION OR DISCLOSURE BY THE GOVERNMENT IS SUBJECT TO
14** RESTRICTIONS AS SET FORTH IN SUBDIVISION (C)(1)(II) OF THE RIGHTS IN
15** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 252.227-7013,
16** AND/OR IN SIMILAR OR SUCCESSOR CLAUSES IN THE FAR, DOD OR NASA FAR
17** SUPPLEMENT. UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF
18** THE UNITED STATES.
19**
20** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
21**
22** $Revision: 1.2 $
23** $Date: 2001-09-05 14:30:44 $
24*/
25
26#include <stdio.h>
27#include <stdlib.h>
28#include <string.h>
29#include <math.h>
30
31#include "texusint.h"
32
33/*
34 * Pn_8 = convert n bits (n <= 6) to 8 bits by replicating the msb's of input
35 * into the lsb's of the output.
36 */
37static FxU8 P1_8[] = {0x00,0xff};
38static FxU8 P2_8[] = {0x00,0x55,0xaa,0xff};
39static FxU8 P3_8[] = {0x00,0x24,0x49,0x6d,0x92,0xb6,0xdb,0xff};
40static FxU8 P4_8[] = {0x00,0x11,0x22,0x33,0x44,0x55,0x66,0x77,
41 0x88,0x99,0xaa,0xbb,0xcc,0xdd,0xee,0xff};
42static FxU8 P5_8[] = {0x00,0x08,0x10,0x18,0x21,0x29,0x31,0x39,
43 0x42,0x4a,0x52,0x5a,0x63,0x6b,0x73,0x7b,
44 0x84,0x8c,0x94,0x9c,0xa5,0xad,0xb5,0xbd,
45 0xc6,0xce,0xd6,0xde,0xe7,0xef,0xf7,0xff};
46static FxU8 P6_8[] = {0x00,0x04,0x08,0x0c,0x10,0x14,0x18,0x1c,
47 0x20,0x24,0x28,0x2c,0x30,0x34,0x38,0x3c,
48 0x41,0x45,0x49,0x4d,0x51,0x55,0x59,0x5d,
49 0x61,0x65,0x69,0x6d,0x71,0x75,0x79,0x7d,
50 0x82,0x86,0x8a,0x8e,0x92,0x96,0x9a,0x9e,
51 0xa2,0xa6,0xaa,0xae,0xb2,0xb6,0xba,0xbe,
52 0xc3,0xc7,0xcb,0xcf,0xd3,0xd7,0xdb,0xdf,
53 0xe3,0xe7,0xeb,0xef,0xf3,0xf7,0xfb,0xff};
54static FxU32
55_txPixRgb332to8888 (FxU8 c332)
56{
57 FxU32 a, r, g, b;
58 a = 0xff;
59 r = P3_8[(c332>>5)&7];
60 g = P3_8[(c332>>2)&7];
61 b = P2_8[(c332 )&3];
62 return (a << 24) | (r << 16) | (g << 8) | b;
63}
64
65/* YIQ treated at the image level */
66
67static FxU32
68_txPixA8to8888 (FxU8 a8)
69{
70 FxU32 p = a8;
71
72 return (p << 24) | (0xffffff);
73}
74
75static FxU32
76_txPixI8to8888 (FxU8 i8)
77{
78 FxU32 p = i8;
79
80 return (0xff << 24) | (p << 16) | (p << 8) | p;
81}
82
83static FxU32
84_txPixAi44to8888 (FxU8 c44)
85{
86 FxU32 a, i;
87
88 a = P4_8[(c44 & 0xF0) >> 4];
89 i = P4_8[(c44 & 0x0F) ];
90
91 return (a << 24) | (i << 16) | (i << 8) | i;
92}
93
94/* P8 treated at the image level */
95
96/* 16 bit pixels */
97static FxU32
98_txPixArgb8332to8888(FxU16 c8332)
99{
100 FxU32 a, r, g, b;
101 a = (c8332 >> 8);
102 r = P3_8[(c8332 >> 5) & 0x7];
103 g = P3_8[(c8332 >> 2) & 0x7];
104 b = P2_8[(c8332 ) & 0x3];
105 return (a << 24) | (r << 16) | (g << 8) | b;
106}
107
108/* AYIQ8422 treated at image level */
109
110static FxU32
111_txPixRgb565to8888 (FxU16 c565)
112{
113 FxU32 a, r, g, b;
114 a = 0xFF;
115 r = P5_8[(c565 >> 11) ];
116 g = P6_8[(c565 >> 5) & 0x3f];
117 b = P5_8[(c565 ) & 0x1f];
118 return (a << 24) | (r << 16) | (g << 8) | b;
119}
120
121static FxU32
122_txPixArgb1555to8888 (FxU16 c1555)
123{
124 FxU32 a, r, g, b;
125 a = P1_8[(c1555 >> 15) ];
126 r = P5_8[(c1555 >> 10) & 0x1f];
127 g = P5_8[(c1555 >> 5) & 0x1f];
128 b = P5_8[(c1555 ) & 0x1f];
129 return (a << 24) | (r << 16) | (g << 8) | b;
130}
131
132static FxU32
133_txPixRgba4444to8888 (FxU16 c4444)
134{
135 FxU32 a, r, g, b;
136 a = P4_8[(c4444 >> 12) & 0xf];
137 r = P4_8[(c4444 >> 8) & 0xf];
138 g = P4_8[(c4444 >> 4) & 0xf];
139 b = P4_8[(c4444 ) & 0xf];
140 return (a << 24) | (r << 16) | (g << 8) | b;
141}
142
143static FxU32
144_txPixAi88to8888(FxU16 c88)
145{
146 FxU32 a, r, g, b;
147 a = c88 >> 8;
148 r = g = b = (c88 & 0xff);
149 return (a << 24) | (r << 16) | (g << 8) | b;
150}
151
152/******************************************************************************/
153static void
154_txImgDequantizeRGB332(FxU32 *out, FxU8 *in, int w, int h)
155{
156 int n = w * h;
157
158 out += n;
159 in += n;
160 while (n--) *--out = _txPixRgb332to8888(*--in);
161}
162
163static void
164_txImgDequantizeYIQ422(FxU32 *out, FxU8 *in, int w, int h, const long *yabTable)
165{
166 int n = w * h;
167 FxU32 pal[256];
168
169 txYABtoPal256((long *)pal, (long *)yabTable);
170 out += n;
171 in += n;
172 while (n--) *--out = pal[*--in] | 0xff000000;
173}
174
175static void
176_txImgDequantizeA8(FxU32 *out, FxU8 *in, int w, int h)
177{
178 int n = w * h;
179
180 out += n;
181 in += n;
182 while (n--) *--out = _txPixA8to8888(*--in);
183}
184
185static void
186_txImgDequantizeI8(FxU32 *out, FxU8 *in, int w, int h)
187{
188 int n = w * h;
189
190 out += n;
191 in += n;
192 while (n--) *--out = _txPixI8to8888(*--in);
193}
194
195static void
196_txImgDequantizeAI44(FxU32 *out, FxU8 *in, int w, int h)
197{
198 int n = w * h;
199
200 out += n;
201 in += n;
202 while (n--) *--out = _txPixAi44to8888(*--in);
203}
204
205static void
206_txImgDequantizeP8(FxU32 *out, FxU8 *in, int w, int h, const FxU32 *pal)
207{
208 int n = w * h;
209
210 out += n;
211 in += n;
212 while (n--) *--out = pal[*--in] | 0xff000000;
213}
214
215
216static void
217_txImgDequantizeARGB8332(FxU32 *out, FxU16 *in, int w, int h)
218{
219 int n = w * h;
220
221 out += n;
222 in += n;
223 while (n--) *--out = _txPixArgb8332to8888 (*--in);
224}
225
226static void
227_txImgDequantizeAYIQ8422(FxU32 *out, FxU16 *in, int w, int h, const long *yab)
228{
229 int n = w * h;
230 long pal[256];
231
232 txYABtoPal256(pal, yab);
233 out += n;
234 in += n;
235 while (n--) {
236 in--;
237 *--out = (pal[(*in) & 0xff] & 0x00ffffff) | ((*in & 0xFF00) << 16);
238 }
239}
240
241static void
242_txImgDequantizeRGB565(FxU32 *out, FxU16 *in, int w, int h)
243{
244 int n = w * h;
245
246 out += n;
247 in += n;
248 while (n--) *--out = _txPixRgb565to8888(*--in);
249}
250
251static void
252_txImgDequantizeARGB1555(FxU32 *out, FxU16 *in, int w, int h)
253{
254 int n = w * h;
255
256 out += n;
257 in += n;
258 while (n--) *--out = _txPixArgb1555to8888 (*--in);
259}
260
261static void
262_txImgDequantizeARGB4444(FxU32 *out, FxU16 *in, int w, int h)
263{
264 int n = w * h;
265
266 out += n;
267 in += n;
268 while (n--) *--out = _txPixRgba4444to8888 (*--in);
269}
270
271static void
272_txImgDequantizeAI88(FxU32 *out, FxU16 *in, int w, int h)
273{
274 int n = w * h;
275
276 out += n;
277 in += n;
278 while (n--) *--out = _txPixAi88to8888(*--in);
279}
280
281
282static void
283_txImgDequantizeAP88(FxU32 *out, FxU16 *in, int w, int h, const FxU32 *pal)
284{
285 int n = w * h;
286
287 out += n;
288 in += n;
289
290 while (n--) {
291 in--;
292 *--out = (pal[(*in) & 0xff] & 0x00ffffff) | ((*in & 0xFF00) << 16);
293 }
294}
295
296
297static void
298_txImgDequantizeARGB8888(FxU32 *out, FxU32 *in, int w, int h)
299{
300 int n = w * h;
301
302 out += n;
303 in += n;
304
305 while (n--) *--out = *--in;
306}
307
308static void
309_txImgDequantizeRGB888(FxU32 *out, FxU32 *in_, int w, int h)
310{
311 int n = w * h;
312 int i;
313 FxU8 *in = ( FxU8 * )in_;
314
315 for( i = 0; i < n; i++ )
316 {
317 out[i] =
318 ( ( ( FxU32 )0xff ) << 24 ) |
319 ( ( ( FxU32 )in[i*3] )<< 16 ) |
320 ( ( ( FxU32 )in[i*3+1] )<< 8 ) |
321 ( ( ( FxU32 )in[i*3+2] ) );
322 }
323}
324
325void
326txMipDequantize(TxMip *txMip, TxMip *pxMip)
327{
328 /* Walk through all mipmap levels, and convert to ARGB8888 format */
329 int i, w, h;
330
331 if( txVerbose )
332 {
333 printf("Dequant: (from %s) ..", Format_Name[pxMip->format]);
334 }
335 w = pxMip->width;
336 h = pxMip->height;
337 for (i=0; i< txMip->depth; i++) {
338 void *src, *dst;
339
340 src = pxMip->data[i];
341 dst = txMip->data[i];
342
343 if( txVerbose )
344 {
345 printf(" %dx%d", w, h); fflush(stdout);
346 }
347
348 switch(pxMip->format) {
349 case GR_TEXFMT_RGB_332: _txImgDequantizeRGB332(dst, src, w, h);
350 break;
351 case GR_TEXFMT_YIQ_422: _txImgDequantizeYIQ422(dst, src, w, h,
352 (long *)pxMip->pal); break;
353 case GR_TEXFMT_A_8: _txImgDequantizeA8(dst, src, w, h);
354 break;
355 case GR_TEXFMT_I_8: _txImgDequantizeI8(dst, src, w, h);
356 break;
357 case GR_TEXFMT_AI_44: _txImgDequantizeAI44(dst, src, w, h);
358 break;
359 case GR_TEXFMT_P_8: _txImgDequantizeP8(dst, src, w, h,
360 pxMip->pal); break;
361
362 case GR_TEXFMT_ARGB_8332: _txImgDequantizeARGB8332(dst, src, w, h);
363 break;
364 case GR_TEXFMT_AYIQ_8422: _txImgDequantizeAYIQ8422(dst, src, w, h,
365 (long *)pxMip->pal); break;
366 case GR_TEXFMT_RGB_565: _txImgDequantizeRGB565(dst, src, w, h);
367 break;
368 case GR_TEXFMT_ARGB_1555: _txImgDequantizeARGB1555(dst, src, w, h);
369 break;
370 case GR_TEXFMT_ARGB_4444: _txImgDequantizeARGB4444(dst, src, w, h);
371 break;
372 case GR_TEXFMT_AI_88: _txImgDequantizeAI88(dst, src, w, h);
373 break;
374 case GR_TEXFMT_AP_88: _txImgDequantizeAP88(dst, src, w, h,
375 pxMip->pal); break;
376 case GR_TEXFMT_ARGB_8888: _txImgDequantizeARGB8888(dst, src, w, h);
377 break;
378 case GR_TEXFMT_RGB_888: _txImgDequantizeRGB888(dst, src, w, h);
379 break;
380
381 default:
382 break;
383 }
384
385 if (w > 1) w >>= 1;
386 if (h > 1) h >>= 1;
387 }
388 if( txVerbose )
389 {
390 printf(".\n"); fflush(stdout);
391 }
392}
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