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- #ifndef __VQ_MIPSR1_H__
- #define __VQ_MIPSR1_H__
- #ifdef HAVE_CONFIG_H
- #include "config.h"
- #endif
- #include "mathops.h"
- #include "arch.h"
- static unsigned extract_collapse_mask(int *iy, int N, int B);
- static void normalise_residual(int * OPUS_RESTRICT iy, celt_norm * OPUS_RESTRICT X, int N, opus_val32 Ryy, opus_val16 gain);
- static void exp_rotation(celt_norm *X, int len, int dir, int stride, int K, int spread);
- static void renormalise_vector_mips(celt_norm *X, int N, opus_val16 gain, int arch);
- #define OVERRIDE_vq_exp_rotation1
- static void exp_rotation1(celt_norm *X, int len, int stride, opus_val16 c, opus_val16 s)
- {
- int i;
- opus_val16 ms;
- celt_norm *Xptr;
- Xptr = X;
- ms = NEG16(s);
- for (i=0;i<len-stride;i++)
- {
- celt_norm x1, x2;
- x1 = Xptr[0];
- x2 = Xptr[stride];
- Xptr[stride] = EXTRACT16(PSHR32(MAC16_16(MULT16_16(c, x2), s, x1), 15));
- *Xptr++ = EXTRACT16(PSHR32(MAC16_16(MULT16_16(c, x1), ms, x2), 15));
- }
- Xptr = &X[len-2*stride-1];
- for (i=len-2*stride-1;i>=0;i--)
- {
- celt_norm x1, x2;
- x1 = Xptr[0];
- x2 = Xptr[stride];
- Xptr[stride] = EXTRACT16(PSHR32(MAC16_16(MULT16_16(c, x2), s, x1), 15));
- *Xptr-- = EXTRACT16(PSHR32(MAC16_16(MULT16_16(c, x1), ms, x2), 15));
- }
- }
- #define OVERRIDE_renormalise_vector
- #define renormalise_vector(X, N, gain, arch) \
- (renormalise_vector_mips(X, N, gain, arch))
- void renormalise_vector_mips(celt_norm *X, int N, opus_val16 gain, int arch)
- {
- int i;
- #ifdef FIXED_POINT
- int k;
- #endif
- opus_val32 E = EPSILON;
- opus_val16 g;
- opus_val32 t;
- celt_norm *xptr = X;
- int X0, X1;
- (void)arch;
- asm volatile("mult $ac1, $0, $0");
- asm volatile("MTLO %0, $ac1" : :"r" (E));
-
- for (i=0;i<N-2;i+=2)
- {
- X0 = (int)*xptr++;
- asm volatile("MADD $ac1, %0, %1" : : "r" (X0), "r" (X0));
- X1 = (int)*xptr++;
- asm volatile("MADD $ac1, %0, %1" : : "r" (X1), "r" (X1));
- }
- for (;i<N;i++)
- {
- X0 = (int)*xptr++;
- asm volatile("MADD $ac1, %0, %1" : : "r" (X0), "r" (X0));
- }
- asm volatile("MFLO %0, $ac1" : "=r" (E));
- #ifdef FIXED_POINT
- k = celt_ilog2(E)>>1;
- #endif
- t = VSHR32(E, 2*(k-7));
- g = MULT16_16_P15(celt_rsqrt_norm(t),gain);
- xptr = X;
- for (i=0;i<N;i++)
- {
- *xptr = EXTRACT16(PSHR32(MULT16_16(g, *xptr), k+1));
- xptr++;
- }
-
- }
- #endif
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