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dct64_i386.c
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1/*
2 dct64_i386.c: DCT64, a C variant for i386
3
4 copyright ?-2006 by the mpg123 project - free software under the terms of the LGPL 2.1
5 see COPYING and AUTHORS files in distribution or http://mpg123.org
6 initially written by Michael Hipp
7*/
8
9/*
10 * Discrete Cosine Tansform (DCT) for subband synthesis
11 * optimized for machines with no auto-increment.
12 * The performance is highly compiler dependend. Maybe
13 * the dct64.c version for 'normal' processor may be faster
14 * even for Intel processors.
15 */
16
17#include "mpg123lib_intern.h"
18
19static void dct64_1(real *out0,real *out1,real *b1,real *b2,real *samples)
20{
21 {
22 register real *costab = pnts[0];
23
24 b1[0x00] = samples[0x00] + samples[0x1F];
25 b1[0x01] = samples[0x01] + samples[0x1E];
26 b1[0x1F] = REAL_MUL(samples[0x00] - samples[0x1F], costab[0x0]);
27 b1[0x1E] = REAL_MUL(samples[0x01] - samples[0x1E], costab[0x1]);
28
29 b1[0x02] = samples[0x02] + samples[0x1D];
30 b1[0x03] = samples[0x03] + samples[0x1C];
31 b1[0x1D] = REAL_MUL(samples[0x02] - samples[0x1D], costab[0x2]);
32 b1[0x1C] = REAL_MUL(samples[0x03] - samples[0x1C], costab[0x3]);
33
34 b1[0x04] = samples[0x04] + samples[0x1B];
35 b1[0x05] = samples[0x05] + samples[0x1A];
36 b1[0x1B] = REAL_MUL(samples[0x04] - samples[0x1B], costab[0x4]);
37 b1[0x1A] = REAL_MUL(samples[0x05] - samples[0x1A], costab[0x5]);
38
39 b1[0x06] = samples[0x06] + samples[0x19];
40 b1[0x07] = samples[0x07] + samples[0x18];
41 b1[0x19] = REAL_MUL(samples[0x06] - samples[0x19], costab[0x6]);
42 b1[0x18] = REAL_MUL(samples[0x07] - samples[0x18], costab[0x7]);
43
44 b1[0x08] = samples[0x08] + samples[0x17];
45 b1[0x09] = samples[0x09] + samples[0x16];
46 b1[0x17] = REAL_MUL(samples[0x08] - samples[0x17], costab[0x8]);
47 b1[0x16] = REAL_MUL(samples[0x09] - samples[0x16], costab[0x9]);
48
49 b1[0x0A] = samples[0x0A] + samples[0x15];
50 b1[0x0B] = samples[0x0B] + samples[0x14];
51 b1[0x15] = REAL_MUL(samples[0x0A] - samples[0x15], costab[0xA]);
52 b1[0x14] = REAL_MUL(samples[0x0B] - samples[0x14], costab[0xB]);
53
54 b1[0x0C] = samples[0x0C] + samples[0x13];
55 b1[0x0D] = samples[0x0D] + samples[0x12];
56 b1[0x13] = REAL_MUL(samples[0x0C] - samples[0x13], costab[0xC]);
57 b1[0x12] = REAL_MUL(samples[0x0D] - samples[0x12], costab[0xD]);
58
59 b1[0x0E] = samples[0x0E] + samples[0x11];
60 b1[0x0F] = samples[0x0F] + samples[0x10];
61 b1[0x11] = REAL_MUL(samples[0x0E] - samples[0x11], costab[0xE]);
62 b1[0x10] = REAL_MUL(samples[0x0F] - samples[0x10], costab[0xF]);
63
64 }
65
66
67 {
68 register real *costab = pnts[1];
69
70 b2[0x00] = b1[0x00] + b1[0x0F];
71 b2[0x01] = b1[0x01] + b1[0x0E];
72 b2[0x0F] = REAL_MUL(b1[0x00] - b1[0x0F], costab[0]);
73 b2[0x0E] = REAL_MUL(b1[0x01] - b1[0x0E], costab[1]);
74
75 b2[0x02] = b1[0x02] + b1[0x0D];
76 b2[0x03] = b1[0x03] + b1[0x0C];
77 b2[0x0D] = REAL_MUL(b1[0x02] - b1[0x0D], costab[2]);
78 b2[0x0C] = REAL_MUL(b1[0x03] - b1[0x0C], costab[3]);
79
80 b2[0x04] = b1[0x04] + b1[0x0B];
81 b2[0x05] = b1[0x05] + b1[0x0A];
82 b2[0x0B] = REAL_MUL(b1[0x04] - b1[0x0B], costab[4]);
83 b2[0x0A] = REAL_MUL(b1[0x05] - b1[0x0A], costab[5]);
84
85 b2[0x06] = b1[0x06] + b1[0x09];
86 b2[0x07] = b1[0x07] + b1[0x08];
87 b2[0x09] = REAL_MUL(b1[0x06] - b1[0x09], costab[6]);
88 b2[0x08] = REAL_MUL(b1[0x07] - b1[0x08], costab[7]);
89
90 /* */
91
92 b2[0x10] = b1[0x10] + b1[0x1F];
93 b2[0x11] = b1[0x11] + b1[0x1E];
94 b2[0x1F] = REAL_MUL(b1[0x1F] - b1[0x10], costab[0]);
95 b2[0x1E] = REAL_MUL(b1[0x1E] - b1[0x11], costab[1]);
96
97 b2[0x12] = b1[0x12] + b1[0x1D];
98 b2[0x13] = b1[0x13] + b1[0x1C];
99 b2[0x1D] = REAL_MUL(b1[0x1D] - b1[0x12], costab[2]);
100 b2[0x1C] = REAL_MUL(b1[0x1C] - b1[0x13], costab[3]);
101
102 b2[0x14] = b1[0x14] + b1[0x1B];
103 b2[0x15] = b1[0x15] + b1[0x1A];
104 b2[0x1B] = REAL_MUL(b1[0x1B] - b1[0x14], costab[4]);
105 b2[0x1A] = REAL_MUL(b1[0x1A] - b1[0x15], costab[5]);
106
107 b2[0x16] = b1[0x16] + b1[0x19];
108 b2[0x17] = b1[0x17] + b1[0x18];
109 b2[0x19] = REAL_MUL(b1[0x19] - b1[0x16], costab[6]);
110 b2[0x18] = REAL_MUL(b1[0x18] - b1[0x17], costab[7]);
111 }
112
113 {
114 register real *costab = pnts[2];
115
116 b1[0x00] = b2[0x00] + b2[0x07];
117 b1[0x07] = REAL_MUL(b2[0x00] - b2[0x07], costab[0]);
118 b1[0x01] = b2[0x01] + b2[0x06];
119 b1[0x06] = REAL_MUL(b2[0x01] - b2[0x06], costab[1]);
120 b1[0x02] = b2[0x02] + b2[0x05];
121 b1[0x05] = REAL_MUL(b2[0x02] - b2[0x05], costab[2]);
122 b1[0x03] = b2[0x03] + b2[0x04];
123 b1[0x04] = REAL_MUL(b2[0x03] - b2[0x04], costab[3]);
124
125 b1[0x08] = b2[0x08] + b2[0x0F];
126 b1[0x0F] = REAL_MUL(b2[0x0F] - b2[0x08], costab[0]);
127 b1[0x09] = b2[0x09] + b2[0x0E];
128 b1[0x0E] = REAL_MUL(b2[0x0E] - b2[0x09], costab[1]);
129 b1[0x0A] = b2[0x0A] + b2[0x0D];
130 b1[0x0D] = REAL_MUL(b2[0x0D] - b2[0x0A], costab[2]);
131 b1[0x0B] = b2[0x0B] + b2[0x0C];
132 b1[0x0C] = REAL_MUL(b2[0x0C] - b2[0x0B], costab[3]);
133
134 b1[0x10] = b2[0x10] + b2[0x17];
135 b1[0x17] = REAL_MUL(b2[0x10] - b2[0x17], costab[0]);
136 b1[0x11] = b2[0x11] + b2[0x16];
137 b1[0x16] = REAL_MUL(b2[0x11] - b2[0x16], costab[1]);
138 b1[0x12] = b2[0x12] + b2[0x15];
139 b1[0x15] = REAL_MUL(b2[0x12] - b2[0x15], costab[2]);
140 b1[0x13] = b2[0x13] + b2[0x14];
141 b1[0x14] = REAL_MUL(b2[0x13] - b2[0x14], costab[3]);
142
143 b1[0x18] = b2[0x18] + b2[0x1F];
144 b1[0x1F] = REAL_MUL(b2[0x1F] - b2[0x18], costab[0]);
145 b1[0x19] = b2[0x19] + b2[0x1E];
146 b1[0x1E] = REAL_MUL(b2[0x1E] - b2[0x19], costab[1]);
147 b1[0x1A] = b2[0x1A] + b2[0x1D];
148 b1[0x1D] = REAL_MUL(b2[0x1D] - b2[0x1A], costab[2]);
149 b1[0x1B] = b2[0x1B] + b2[0x1C];
150 b1[0x1C] = REAL_MUL(b2[0x1C] - b2[0x1B], costab[3]);
151 }
152
153 {
154 register real const cos0 = pnts[3][0];
155 register real const cos1 = pnts[3][1];
156
157 b2[0x00] = b1[0x00] + b1[0x03];
158 b2[0x03] = REAL_MUL(b1[0x00] - b1[0x03], cos0);
159 b2[0x01] = b1[0x01] + b1[0x02];
160 b2[0x02] = REAL_MUL(b1[0x01] - b1[0x02], cos1);
161
162 b2[0x04] = b1[0x04] + b1[0x07];
163 b2[0x07] = REAL_MUL(b1[0x07] - b1[0x04], cos0);
164 b2[0x05] = b1[0x05] + b1[0x06];
165 b2[0x06] = REAL_MUL(b1[0x06] - b1[0x05], cos1);
166
167 b2[0x08] = b1[0x08] + b1[0x0B];
168 b2[0x0B] = REAL_MUL(b1[0x08] - b1[0x0B], cos0);
169 b2[0x09] = b1[0x09] + b1[0x0A];
170 b2[0x0A] = REAL_MUL(b1[0x09] - b1[0x0A], cos1);
171
172 b2[0x0C] = b1[0x0C] + b1[0x0F];
173 b2[0x0F] = REAL_MUL(b1[0x0F] - b1[0x0C], cos0);
174 b2[0x0D] = b1[0x0D] + b1[0x0E];
175 b2[0x0E] = REAL_MUL(b1[0x0E] - b1[0x0D], cos1);
176
177 b2[0x10] = b1[0x10] + b1[0x13];
178 b2[0x13] = REAL_MUL(b1[0x10] - b1[0x13], cos0);
179 b2[0x11] = b1[0x11] + b1[0x12];
180 b2[0x12] = REAL_MUL(b1[0x11] - b1[0x12], cos1);
181
182 b2[0x14] = b1[0x14] + b1[0x17];
183 b2[0x17] = REAL_MUL(b1[0x17] - b1[0x14], cos0);
184 b2[0x15] = b1[0x15] + b1[0x16];
185 b2[0x16] = REAL_MUL(b1[0x16] - b1[0x15], cos1);
186
187 b2[0x18] = b1[0x18] + b1[0x1B];
188 b2[0x1B] = REAL_MUL(b1[0x18] - b1[0x1B], cos0);
189 b2[0x19] = b1[0x19] + b1[0x1A];
190 b2[0x1A] = REAL_MUL(b1[0x19] - b1[0x1A], cos1);
191
192 b2[0x1C] = b1[0x1C] + b1[0x1F];
193 b2[0x1F] = REAL_MUL(b1[0x1F] - b1[0x1C], cos0);
194 b2[0x1D] = b1[0x1D] + b1[0x1E];
195 b2[0x1E] = REAL_MUL(b1[0x1E] - b1[0x1D], cos1);
196 }
197
198 {
199 register real const cos0 = pnts[4][0];
200
201 b1[0x00] = b2[0x00] + b2[0x01];
202 b1[0x01] = REAL_MUL(b2[0x00] - b2[0x01], cos0);
203 b1[0x02] = b2[0x02] + b2[0x03];
204 b1[0x03] = REAL_MUL(b2[0x03] - b2[0x02], cos0);
205 b1[0x02] += b1[0x03];
206
207 b1[0x04] = b2[0x04] + b2[0x05];
208 b1[0x05] = REAL_MUL(b2[0x04] - b2[0x05], cos0);
209 b1[0x06] = b2[0x06] + b2[0x07];
210 b1[0x07] = REAL_MUL(b2[0x07] - b2[0x06], cos0);
211 b1[0x06] += b1[0x07];
212 b1[0x04] += b1[0x06];
213 b1[0x06] += b1[0x05];
214 b1[0x05] += b1[0x07];
215
216 b1[0x08] = b2[0x08] + b2[0x09];
217 b1[0x09] = REAL_MUL(b2[0x08] - b2[0x09], cos0);
218 b1[0x0A] = b2[0x0A] + b2[0x0B];
219 b1[0x0B] = REAL_MUL(b2[0x0B] - b2[0x0A], cos0);
220 b1[0x0A] += b1[0x0B];
221
222 b1[0x0C] = b2[0x0C] + b2[0x0D];
223 b1[0x0D] = REAL_MUL(b2[0x0C] - b2[0x0D], cos0);
224 b1[0x0E] = b2[0x0E] + b2[0x0F];
225 b1[0x0F] = REAL_MUL(b2[0x0F] - b2[0x0E], cos0);
226 b1[0x0E] += b1[0x0F];
227 b1[0x0C] += b1[0x0E];
228 b1[0x0E] += b1[0x0D];
229 b1[0x0D] += b1[0x0F];
230
231 b1[0x10] = b2[0x10] + b2[0x11];
232 b1[0x11] = REAL_MUL(b2[0x10] - b2[0x11], cos0);
233 b1[0x12] = b2[0x12] + b2[0x13];
234 b1[0x13] = REAL_MUL(b2[0x13] - b2[0x12], cos0);
235 b1[0x12] += b1[0x13];
236
237 b1[0x14] = b2[0x14] + b2[0x15];
238 b1[0x15] = REAL_MUL(b2[0x14] - b2[0x15], cos0);
239 b1[0x16] = b2[0x16] + b2[0x17];
240 b1[0x17] = REAL_MUL(b2[0x17] - b2[0x16], cos0);
241 b1[0x16] += b1[0x17];
242 b1[0x14] += b1[0x16];
243 b1[0x16] += b1[0x15];
244 b1[0x15] += b1[0x17];
245
246 b1[0x18] = b2[0x18] + b2[0x19];
247 b1[0x19] = REAL_MUL(b2[0x18] - b2[0x19], cos0);
248 b1[0x1A] = b2[0x1A] + b2[0x1B];
249 b1[0x1B] = REAL_MUL(b2[0x1B] - b2[0x1A], cos0);
250 b1[0x1A] += b1[0x1B];
251
252 b1[0x1C] = b2[0x1C] + b2[0x1D];
253 b1[0x1D] = REAL_MUL(b2[0x1C] - b2[0x1D], cos0);
254 b1[0x1E] = b2[0x1E] + b2[0x1F];
255 b1[0x1F] = REAL_MUL(b2[0x1F] - b2[0x1E], cos0);
256 b1[0x1E] += b1[0x1F];
257 b1[0x1C] += b1[0x1E];
258 b1[0x1E] += b1[0x1D];
259 b1[0x1D] += b1[0x1F];
260 }
261
262 out0[0x10*16] = REAL_SCALE_DCT64(b1[0x00]);
263 out0[0x10*12] = REAL_SCALE_DCT64(b1[0x04]);
264 out0[0x10* 8] = REAL_SCALE_DCT64(b1[0x02]);
265 out0[0x10* 4] = REAL_SCALE_DCT64(b1[0x06]);
266 out0[0x10* 0] = REAL_SCALE_DCT64(b1[0x01]);
267 out1[0x10* 0] = REAL_SCALE_DCT64(b1[0x01]);
268 out1[0x10* 4] = REAL_SCALE_DCT64(b1[0x05]);
269 out1[0x10* 8] = REAL_SCALE_DCT64(b1[0x03]);
270 out1[0x10*12] = REAL_SCALE_DCT64(b1[0x07]);
271
272#if 1
273 out0[0x10*14] = REAL_SCALE_DCT64(b1[0x08] + b1[0x0C]);
274 out0[0x10*10] = REAL_SCALE_DCT64(b1[0x0C] + b1[0x0a]);
275 out0[0x10* 6] = REAL_SCALE_DCT64(b1[0x0A] + b1[0x0E]);
276 out0[0x10* 2] = REAL_SCALE_DCT64(b1[0x0E] + b1[0x09]);
277 out1[0x10* 2] = REAL_SCALE_DCT64(b1[0x09] + b1[0x0D]);
278 out1[0x10* 6] = REAL_SCALE_DCT64(b1[0x0D] + b1[0x0B]);
279 out1[0x10*10] = REAL_SCALE_DCT64(b1[0x0B] + b1[0x0F]);
280 out1[0x10*14] = REAL_SCALE_DCT64(b1[0x0F]);
281#else
282 b1[0x08] += b1[0x0C];
283 out0[0x10*14] = REAL_SCALE_DCT64(b1[0x08]);
284 b1[0x0C] += b1[0x0a];
285 out0[0x10*10] = REAL_SCALE_DCT64(b1[0x0C]);
286 b1[0x0A] += b1[0x0E];
287 out0[0x10* 6] = REAL_SCALE_DCT64(b1[0x0A]);
288 b1[0x0E] += b1[0x09];
289 out0[0x10* 2] = REAL_SCALE_DCT64(b1[0x0E]);
290 b1[0x09] += b1[0x0D];
291 out1[0x10* 2] = REAL_SCALE_DCT64(b1[0x09]);
292 b1[0x0D] += b1[0x0B];
293 out1[0x10* 6] = REAL_SCALE_DCT64(b1[0x0D]);
294 b1[0x0B] += b1[0x0F];
295 out1[0x10*10] = REAL_SCALE_DCT64(b1[0x0B]);
296 out1[0x10*14] = REAL_SCALE_DCT64(b1[0x0F]);
297#endif
298
299 {
300 real tmp;
301 tmp = b1[0x18] + b1[0x1C];
302 out0[0x10*15] = REAL_SCALE_DCT64(tmp + b1[0x10]);
303 out0[0x10*13] = REAL_SCALE_DCT64(tmp + b1[0x14]);
304 tmp = b1[0x1C] + b1[0x1A];
305 out0[0x10*11] = REAL_SCALE_DCT64(tmp + b1[0x14]);
306 out0[0x10* 9] = REAL_SCALE_DCT64(tmp + b1[0x12]);
307 tmp = b1[0x1A] + b1[0x1E];
308 out0[0x10* 7] = REAL_SCALE_DCT64(tmp + b1[0x12]);
309 out0[0x10* 5] = REAL_SCALE_DCT64(tmp + b1[0x16]);
310 tmp = b1[0x1E] + b1[0x19];
311 out0[0x10* 3] = REAL_SCALE_DCT64(tmp + b1[0x16]);
312 out0[0x10* 1] = REAL_SCALE_DCT64(tmp + b1[0x11]);
313 tmp = b1[0x19] + b1[0x1D];
314 out1[0x10* 1] = REAL_SCALE_DCT64(tmp + b1[0x11]);
315 out1[0x10* 3] = REAL_SCALE_DCT64(tmp + b1[0x15]);
316 tmp = b1[0x1D] + b1[0x1B];
317 out1[0x10* 5] = REAL_SCALE_DCT64(tmp + b1[0x15]);
318 out1[0x10* 7] = REAL_SCALE_DCT64(tmp + b1[0x13]);
319 tmp = b1[0x1B] + b1[0x1F];
320 out1[0x10* 9] = REAL_SCALE_DCT64(tmp + b1[0x13]);
321 out1[0x10*11] = REAL_SCALE_DCT64(tmp + b1[0x17]);
322 out1[0x10*13] = REAL_SCALE_DCT64(b1[0x17] + b1[0x1F]);
323 out1[0x10*15] = REAL_SCALE_DCT64(b1[0x1F]);
324 }
325}
326
327/*
328 * the call via dct64 is a trick to force GCC to use
329 * (new) registers for the b1,b2 pointer to the bufs[xx] field
330 */
331void dct64_i386(real *a,real *b,real *c)
332{
333 real bufs[0x40];
334 dct64_1(a,b,bufs,bufs+0x20,c);
335}
336
dct64_1
static void dct64_1(real *out0, real *out1, real *b1, real *b2, real *samples)
Definition: dct64_i386.c:19
samples
GLsizei samples
Definition: glext.h:7006
c
const GLubyte * c
Definition: glext.h:8905
bufs
const GLenum * bufs
Definition: glext.h:6026
b
GLboolean GLboolean GLboolean b
Definition: glext.h:6204
a
GLboolean GLboolean GLboolean GLboolean a
Definition: glext.h:6204
pnts
#define pnts
Definition: intsym.h:8
dct64_i386
#define dct64_i386
Definition: intsym.h:143
b2
static CRYPT_DATA_BLOB b2[]
Definition: msg.c:582
b1
static CRYPT_DATA_BLOB b1[]
Definition: msg.c:573
mpg123lib_intern.h
REAL_MUL
#define REAL_MUL(x, y)
Definition: mpg123lib_intern.h:233
real
#define real
Definition: mpg123lib_intern.h:204
REAL_SCALE_DCT64
#define REAL_SCALE_DCT64(x)
Definition: mpg123lib_intern.h:254