24 |
#define __RT_MATH_H__ |
#define __RT_MATH_H__ |
25 |
|
|
26 |
#include <math.h> |
#include <math.h> |
27 |
|
#include <stdint.h> |
28 |
#include "global.h" |
#include "global.h" |
29 |
|
|
30 |
/// Needed for calculating frequency ratio used to pitch a sample |
/// Needed for calculating frequency ratio used to pitch a sample |
31 |
#define TWELVEHUNDREDTH_ROOT_OF_TWO 1.000577789506555 |
#define TWELVEHUNDREDTH_ROOT_OF_TWO 1.000577789506555 |
32 |
|
|
33 |
enum implementation_t { |
enum implementation_t { |
34 |
CPP, |
CPP |
35 |
ASM_X86_MMX_SSE |
#if ARCH_X86 |
36 |
|
,ASM_X86_MMX_SSE |
37 |
|
#endif // ARCH_X86 |
38 |
}; |
}; |
39 |
|
|
40 |
class RTMathBase { |
class RTMathBase { |
41 |
public: |
public: |
42 |
/** |
/** |
43 |
|
* Highly accurate time stamp. |
44 |
|
*/ |
45 |
|
typedef uint32_t time_stamp_t; |
46 |
|
|
47 |
|
/** |
48 |
|
* We read the processor's cycle count register as a reference |
49 |
|
* for the real time. These are of course only abstract values |
50 |
|
* with arbitrary time entity, but that's not a problem as long |
51 |
|
* as we calculate relatively. |
52 |
|
*/ |
53 |
|
static time_stamp_t CreateTimeStamp(); |
54 |
|
|
55 |
|
/** |
56 |
* Calculates the frequency ratio for a pitch value given in cents |
* Calculates the frequency ratio for a pitch value given in cents |
57 |
* (assuming equal tempered scale of course, divided into 12 |
* (assuming equal tempered scale of course, divided into 12 |
58 |
* semitones per octave and 100 cents per semitone). |
* semitones per octave and 100 cents per semitone). |
91 |
case CPP: { |
case CPP: { |
92 |
return (int) a; |
return (int) a; |
93 |
} |
} |
94 |
|
#if ARCH_X86 |
95 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
96 |
int ret; |
int ret; |
97 |
asm ( |
asm ( |
101 |
); |
); |
102 |
return ret; |
return ret; |
103 |
} |
} |
104 |
|
#endif // ARCH_X86 |
105 |
} |
} |
106 |
} |
} |
107 |
|
|
115 |
case CPP: { |
case CPP: { |
116 |
return (float) a; |
return (float) a; |
117 |
} |
} |
118 |
|
#if ARCH_X86 |
119 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
120 |
float ret; |
float ret; |
121 |
asm ( |
asm ( |
126 |
); |
); |
127 |
return ret; |
return ret; |
128 |
} |
} |
129 |
|
#endif // ARCH_X86 |
130 |
} |
} |
131 |
} |
} |
132 |
|
|
142 |
case CPP: { |
case CPP: { |
143 |
return (a + b); |
return (a + b); |
144 |
} |
} |
145 |
|
#if ARCH_X86 |
146 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
147 |
float ret; |
float ret; |
148 |
asm ( |
asm ( |
154 |
); |
); |
155 |
return ret; |
return ret; |
156 |
} |
} |
157 |
|
#endif // ARCH_X86 |
158 |
} |
} |
159 |
} |
} |
160 |
|
|
167 |
case CPP: { |
case CPP: { |
168 |
return (a - b); |
return (a - b); |
169 |
} |
} |
170 |
|
#if ARCH_X86 |
171 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
172 |
float ret; |
float ret; |
173 |
asm ( |
asm ( |
179 |
); |
); |
180 |
return ret; |
return ret; |
181 |
} |
} |
182 |
|
#endif // ARCH_X86 |
183 |
} |
} |
184 |
} |
} |
185 |
|
|
192 |
case CPP: { |
case CPP: { |
193 |
return (a * b); |
return (a * b); |
194 |
} |
} |
195 |
|
#if ARCH_X86 |
196 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
197 |
float ret; |
float ret; |
198 |
asm ( |
asm ( |
204 |
); |
); |
205 |
return ret; |
return ret; |
206 |
} |
} |
207 |
|
#endif // ARCH_X86 |
208 |
} |
} |
209 |
} |
} |
210 |
|
|
217 |
case CPP: { |
case CPP: { |
218 |
return (a / b); |
return (a / b); |
219 |
} |
} |
220 |
|
#if ARCH_X86 |
221 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
222 |
float ret; |
float ret; |
223 |
asm ( |
asm ( |
229 |
); |
); |
230 |
return ret; |
return ret; |
231 |
} |
} |
232 |
|
#endif // ARCH_X86 |
233 |
} |
} |
234 |
} |
} |
235 |
|
|
242 |
case CPP: { |
case CPP: { |
243 |
return (b < a) ? b : a; |
return (b < a) ? b : a; |
244 |
} |
} |
245 |
|
#if ARCH_X86 |
246 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
247 |
float ret; |
float ret; |
248 |
asm ( |
asm ( |
254 |
); |
); |
255 |
return ret; |
return ret; |
256 |
} |
} |
257 |
|
#endif // ARCH_X86 |
258 |
} |
} |
259 |
} |
} |
260 |
|
|
267 |
case CPP: { |
case CPP: { |
268 |
return (b > a) ? b : a; |
return (b > a) ? b : a; |
269 |
} |
} |
270 |
|
#if ARCH_X86 |
271 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
272 |
float ret; |
float ret; |
273 |
asm ( |
asm ( |
279 |
); |
); |
280 |
return ret; |
return ret; |
281 |
} |
} |
282 |
|
#endif // ARCH_X86 |
283 |
} |
} |
284 |
} |
} |
285 |
|
|
292 |
case CPP: { |
case CPP: { |
293 |
return fmodf(a, b); |
return fmodf(a, b); |
294 |
} |
} |
295 |
|
#if ARCH_X86 |
296 |
case ASM_X86_MMX_SSE: { |
case ASM_X86_MMX_SSE: { |
297 |
float ret; |
float ret; |
298 |
asm ( |
asm ( |
311 |
); |
); |
312 |
return ret; |
return ret; |
313 |
} |
} |
314 |
|
#endif // ARCH_X86 |
315 |
} |
} |
316 |
} |
} |
317 |
}; |
}; |