/[svn]/linuxsampler/trunk/src/engines/common/BiquadFilter.h
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revision 324 by senkov, Sat Dec 18 18:54:46 2004 UTC revision 328 by schoenebeck, Sat Dec 25 21:58:58 2004 UTC
# Line 25  Line 25 
25    
26  #include <math.h>  #include <math.h>
27    
28    #include "../../common/global.h"
29    
30  /// ln(2) / 2  /// ln(2) / 2
31  #define LN_2_2                  0.34657359f  #define LN_2_2                  0.34657359f
32    
# Line 121  namespace LinuxSampler { Line 123  namespace LinuxSampler {
123                  return y;                  return y;
124              }              }
125    
126    #if ARCH_X86
127              // expects to find input in xmm0 (xmm0 stays unmodified) and finally leaves output in xmm6              // expects to find input in xmm0 (xmm0 stays unmodified) and finally leaves output in xmm6
128              inline void Apply4StepsSSE(biquad_param_t* param) {              inline void Apply4StepsSSE(biquad_param_t* param) {
129                  __asm__ __volatile__ (                  __asm__ __volatile__ (
# Line 207  namespace LinuxSampler { Line 210  namespace LinuxSampler {
210                        "r" (&param->b0)  /* %2 */                        "r" (&param->b0)  /* %2 */
211                  );                  );
212              }              }
213    #endif // ARCH_X86
214    
215              inline bq_t ApplyFB(bq_t x, const bq_t fb) {              inline bq_t ApplyFB(bq_t x, const bq_t fb) {
216                  bq_t y;                  bq_t y;
# Line 238  namespace LinuxSampler { Line 242  namespace LinuxSampler {
242                  return y;                  return y;
243              }              }
244    
245    #if ARCH_X86
246              // expects to find input in xmm0 (xmm0 stays unmodified) and finally leaves output in xmm7              // expects to find input in xmm0 (xmm0 stays unmodified) and finally leaves output in xmm7
247              inline void ApplyFB4StepsSSE(biquad_param_t* param, const bq_t &fb) {              inline void ApplyFB4StepsSSE(biquad_param_t* param, const bq_t &fb) {
248                  float xs, ys;                  float xs, ys;
# Line 434  namespace LinuxSampler { Line 439  namespace LinuxSampler {
439                  );                  );
440              }              }
441      };      };
442    #endif // ARCH_X86
443    
444      class LowpassFilter : public BiquadFilter {      class LowpassFilter : public BiquadFilter {
445          public:          public:
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