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27
28 #ifndef __WARPED_AUTOCORRELATION_FIX_MIPSR1_H__
29 #define __WARPED_AUTOCORRELATION_FIX_MIPSR1_H__
30
31 #ifdef HAVE_CONFIG_H
32 #include "config.h"
33 #endif
34
35 #include "main_FIX.h"
36
37 #undef QC
38 #define QC 10
39
40 #undef QS
41 #define QS 14
42
43 /* Autocorrelations for a warped frequency axis */
44 #define OVERRIDE_silk_warped_autocorrelation_FIX
silk_warped_autocorrelation_FIX(opus_int32 * corr,opus_int * scale,const opus_int16 * input,const opus_int warping_Q16,const opus_int length,const opus_int order,int arch)45 void silk_warped_autocorrelation_FIX(
46 opus_int32 *corr, /* O Result [order + 1] */
47 opus_int *scale, /* O Scaling of the correlation vector */
48 const opus_int16 *input, /* I Input data to correlate */
49 const opus_int warping_Q16, /* I Warping coefficient */
50 const opus_int length, /* I Length of input */
51 const opus_int order, /* I Correlation order (even) */
52 int arch /* I Run-time architecture */
53 )
54 {
55 opus_int n, i, lsh;
56 opus_int32 tmp1_QS=0, tmp2_QS=0, tmp3_QS=0, tmp4_QS=0, tmp5_QS=0, tmp6_QS=0, tmp7_QS=0, tmp8_QS=0, start_1=0, start_2=0, start_3=0;
57 opus_int32 state_QS[ MAX_SHAPE_LPC_ORDER + 1 ] = { 0 };
58 opus_int64 corr_QC[ MAX_SHAPE_LPC_ORDER + 1 ] = { 0 };
59 opus_int64 temp64;
60
61 opus_int32 val;
62 val = 2 * QS - QC;
63
64 /* Order must be even */
65 silk_assert( ( order & 1 ) == 0 );
66 silk_assert( 2 * QS - QC >= 0 );
67
68 /* Loop over samples */
69 for( n = 0; n < length; n=n+4 ) {
70
71 tmp1_QS = silk_LSHIFT32( (opus_int32)input[ n ], QS );
72 start_1 = tmp1_QS;
73 tmp3_QS = silk_LSHIFT32( (opus_int32)input[ n+1], QS );
74 start_2 = tmp3_QS;
75 tmp5_QS = silk_LSHIFT32( (opus_int32)input[ n+2], QS );
76 start_3 = tmp5_QS;
77 tmp7_QS = silk_LSHIFT32( (opus_int32)input[ n+3], QS );
78
79 /* Loop over allpass sections */
80 for( i = 0; i < order; i += 2 ) {
81 /* Output of allpass section */
82 tmp2_QS = silk_SMLAWB( state_QS[ i ], state_QS[ i + 1 ] - tmp1_QS, warping_Q16 );
83 corr_QC[ i ] = __builtin_mips_madd( corr_QC[ i ], tmp1_QS, start_1);
84
85 tmp4_QS = silk_SMLAWB( tmp1_QS, tmp2_QS - tmp3_QS, warping_Q16 );
86 corr_QC[ i ] = __builtin_mips_madd( corr_QC[ i ], tmp3_QS, start_2);
87
88 tmp6_QS = silk_SMLAWB( tmp3_QS, tmp4_QS - tmp5_QS, warping_Q16 );
89 corr_QC[ i ] = __builtin_mips_madd( corr_QC[ i ], tmp5_QS, start_3);
90
91 tmp8_QS = silk_SMLAWB( tmp5_QS, tmp6_QS - tmp7_QS, warping_Q16 );
92 state_QS[ i ] = tmp7_QS;
93 corr_QC[ i ] = __builtin_mips_madd( corr_QC[ i ], tmp7_QS, state_QS[0]);
94
95 /* Output of allpass section */
96 tmp1_QS = silk_SMLAWB( state_QS[ i + 1 ], state_QS[ i + 2 ] - tmp2_QS, warping_Q16 );
97 corr_QC[ i+1 ] = __builtin_mips_madd( corr_QC[ i+1 ], tmp2_QS, start_1);
98
99 tmp3_QS = silk_SMLAWB( tmp2_QS, tmp1_QS - tmp4_QS, warping_Q16 );
100 corr_QC[ i+1 ] = __builtin_mips_madd( corr_QC[ i+1 ], tmp4_QS, start_2);
101
102 tmp5_QS = silk_SMLAWB( tmp4_QS, tmp3_QS - tmp6_QS, warping_Q16 );
103 corr_QC[ i+1 ] = __builtin_mips_madd( corr_QC[ i+1 ], tmp6_QS, start_3);
104
105 tmp7_QS = silk_SMLAWB( tmp6_QS, tmp5_QS - tmp8_QS, warping_Q16 );
106 state_QS[ i + 1 ] = tmp8_QS;
107 corr_QC[ i+1 ] = __builtin_mips_madd( corr_QC[ i+1 ], tmp8_QS, state_QS[ 0 ]);
108
109 }
110 state_QS[ order ] = tmp7_QS;
111
112 corr_QC[ order ] = __builtin_mips_madd( corr_QC[ order ], tmp1_QS, start_1);
113 corr_QC[ order ] = __builtin_mips_madd( corr_QC[ order ], tmp3_QS, start_2);
114 corr_QC[ order ] = __builtin_mips_madd( corr_QC[ order ], tmp5_QS, start_3);
115 corr_QC[ order ] = __builtin_mips_madd( corr_QC[ order ], tmp7_QS, state_QS[ 0 ]);
116 }
117
118 for(;n< length; n++ ) {
119
120 tmp1_QS = silk_LSHIFT32( (opus_int32)input[ n ], QS );
121
122 /* Loop over allpass sections */
123 for( i = 0; i < order; i += 2 ) {
124
125 /* Output of allpass section */
126 tmp2_QS = silk_SMLAWB( state_QS[ i ], state_QS[ i + 1 ] - tmp1_QS, warping_Q16 );
127 state_QS[ i ] = tmp1_QS;
128 corr_QC[ i ] = __builtin_mips_madd( corr_QC[ i ], tmp1_QS, state_QS[ 0 ]);
129
130 /* Output of allpass section */
131 tmp1_QS = silk_SMLAWB( state_QS[ i + 1 ], state_QS[ i + 2 ] - tmp2_QS, warping_Q16 );
132 state_QS[ i + 1 ] = tmp2_QS;
133 corr_QC[ i+1 ] = __builtin_mips_madd( corr_QC[ i+1 ], tmp2_QS, state_QS[ 0 ]);
134 }
135 state_QS[ order ] = tmp1_QS;
136 corr_QC[ order ] = __builtin_mips_madd( corr_QC[ order ], tmp1_QS, state_QS[ 0 ]);
137 }
138
139 temp64 = corr_QC[ 0 ];
140 temp64 = __builtin_mips_shilo(temp64, val);
141
142 lsh = silk_CLZ64( temp64 ) - 35;
143 lsh = silk_LIMIT( lsh, -12 - QC, 30 - QC );
144 *scale = -( QC + lsh );
145 silk_assert( *scale >= -30 && *scale <= 12 );
146 if( lsh >= 0 ) {
147 for( i = 0; i < order + 1; i++ ) {
148 temp64 = corr_QC[ i ];
149 //temp64 = __builtin_mips_shilo(temp64, val);
150 temp64 = (val >= 0) ? (temp64 >> val) : (temp64 << -val);
151 corr[ i ] = (opus_int32)silk_CHECK_FIT32( __builtin_mips_shilo( temp64, -lsh ) );
152 }
153 } else {
154 for( i = 0; i < order + 1; i++ ) {
155 temp64 = corr_QC[ i ];
156 //temp64 = __builtin_mips_shilo(temp64, val);
157 temp64 = (val >= 0) ? (temp64 >> val) : (temp64 << -val);
158 corr[ i ] = (opus_int32)silk_CHECK_FIT32( __builtin_mips_shilo( temp64, -lsh ) );
159 }
160 }
161
162 corr_QC[ 0 ] = __builtin_mips_shilo(corr_QC[ 0 ], val);
163
164 silk_assert( corr_QC[ 0 ] >= 0 ); /* If breaking, decrease QC*/
165 }
166 #endif /* __WARPED_AUTOCORRELATION_FIX_MIPSR1_H__ */
167