summaryrefslogtreecommitdiff
path: root/lib/rbcodec/codecs/libopus/silk/fixed/mips/prefilter_FIX_mipsr1.h
diff options
context:
space:
mode:
Diffstat (limited to 'lib/rbcodec/codecs/libopus/silk/fixed/mips/prefilter_FIX_mipsr1.h')
-rw-r--r--lib/rbcodec/codecs/libopus/silk/fixed/mips/prefilter_FIX_mipsr1.h184
1 files changed, 184 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/silk/fixed/mips/prefilter_FIX_mipsr1.h b/lib/rbcodec/codecs/libopus/silk/fixed/mips/prefilter_FIX_mipsr1.h
new file mode 100644
index 0000000000..21b256885f
--- /dev/null
+++ b/lib/rbcodec/codecs/libopus/silk/fixed/mips/prefilter_FIX_mipsr1.h
@@ -0,0 +1,184 @@
1/***********************************************************************
2Copyright (c) 2006-2011, Skype Limited. All rights reserved.
3Redistribution and use in source and binary forms, with or without
4modification, are permitted provided that the following conditions
5are met:
6- Redistributions of source code must retain the above copyright notice,
7this list of conditions and the following disclaimer.
8- Redistributions in binary form must reproduce the above copyright
9notice, this list of conditions and the following disclaimer in the
10documentation and/or other materials provided with the distribution.
11- Neither the name of Internet Society, IETF or IETF Trust, nor the
12names of specific contributors, may be used to endorse or promote
13products derived from this software without specific prior written
14permission.
15THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
19LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25POSSIBILITY OF SUCH DAMAGE.
26***********************************************************************/
27#ifndef __PREFILTER_FIX_MIPSR1_H__
28#define __PREFILTER_FIX_MIPSR1_H__
29
30#ifdef HAVE_CONFIG_H
31#include "config.h"
32#endif
33
34#include "main_FIX.h"
35#include "stack_alloc.h"
36#include "tuning_parameters.h"
37
38#define OVERRIDE_silk_warped_LPC_analysis_filter_FIX
39void silk_warped_LPC_analysis_filter_FIX(
40 opus_int32 state[], /* I/O State [order + 1] */
41 opus_int32 res_Q2[], /* O Residual signal [length] */
42 const opus_int16 coef_Q13[], /* I Coefficients [order] */
43 const opus_int16 input[], /* I Input signal [length] */
44 const opus_int16 lambda_Q16, /* I Warping factor */
45 const opus_int length, /* I Length of input signal */
46 const opus_int order, /* I Filter order (even) */
47 int arch
48)
49{
50 opus_int n, i;
51 opus_int32 acc_Q11, acc_Q22, tmp1, tmp2, tmp3, tmp4;
52 opus_int32 state_cur, state_next;
53
54 (void)arch;
55
56 /* Order must be even */
57 /* Length must be even */
58
59 silk_assert( ( order & 1 ) == 0 );
60 silk_assert( ( length & 1 ) == 0 );
61
62 for( n = 0; n < length; n+=2 ) {
63 /* Output of lowpass section */
64 tmp2 = silk_SMLAWB( state[ 0 ], state[ 1 ], lambda_Q16 );
65 state_cur = silk_LSHIFT( input[ n ], 14 );
66 /* Output of allpass section */
67 tmp1 = silk_SMLAWB( state[ 1 ], state[ 2 ] - tmp2, lambda_Q16 );
68 state_next = tmp2;
69 acc_Q11 = silk_RSHIFT( order, 1 );
70 acc_Q11 = silk_SMLAWB( acc_Q11, tmp2, coef_Q13[ 0 ] );
71
72
73 /* Output of lowpass section */
74 tmp4 = silk_SMLAWB( state_cur, state_next, lambda_Q16 );
75 state[ 0 ] = silk_LSHIFT( input[ n+1 ], 14 );
76 /* Output of allpass section */
77 tmp3 = silk_SMLAWB( state_next, tmp1 - tmp4, lambda_Q16 );
78 state[ 1 ] = tmp4;
79 acc_Q22 = silk_RSHIFT( order, 1 );
80 acc_Q22 = silk_SMLAWB( acc_Q22, tmp4, coef_Q13[ 0 ] );
81
82 /* Loop over allpass sections */
83 for( i = 2; i < order; i += 2 ) {
84 /* Output of allpass section */
85 tmp2 = silk_SMLAWB( state[ i ], state[ i + 1 ] - tmp1, lambda_Q16 );
86 state_cur = tmp1;
87 acc_Q11 = silk_SMLAWB( acc_Q11, tmp1, coef_Q13[ i - 1 ] );
88 /* Output of allpass section */
89 tmp1 = silk_SMLAWB( state[ i + 1 ], state[ i + 2 ] - tmp2, lambda_Q16 );
90 state_next = tmp2;
91 acc_Q11 = silk_SMLAWB( acc_Q11, tmp2, coef_Q13[ i ] );
92
93
94 /* Output of allpass section */
95 tmp4 = silk_SMLAWB( state_cur, state_next - tmp3, lambda_Q16 );
96 state[ i ] = tmp3;
97 acc_Q22 = silk_SMLAWB( acc_Q22, tmp3, coef_Q13[ i - 1 ] );
98 /* Output of allpass section */
99 tmp3 = silk_SMLAWB( state_next, tmp1 - tmp4, lambda_Q16 );
100 state[ i + 1 ] = tmp4;
101 acc_Q22 = silk_SMLAWB( acc_Q22, tmp4, coef_Q13[ i ] );
102 }
103 acc_Q11 = silk_SMLAWB( acc_Q11, tmp1, coef_Q13[ order - 1 ] );
104 res_Q2[ n ] = silk_LSHIFT( (opus_int32)input[ n ], 2 ) - silk_RSHIFT_ROUND( acc_Q11, 9 );
105
106 state[ order ] = tmp3;
107 acc_Q22 = silk_SMLAWB( acc_Q22, tmp3, coef_Q13[ order - 1 ] );
108 res_Q2[ n+1 ] = silk_LSHIFT( (opus_int32)input[ n+1 ], 2 ) - silk_RSHIFT_ROUND( acc_Q22, 9 );
109 }
110}
111
112
113
114/* Prefilter for finding Quantizer input signal */
115#define OVERRIDE_silk_prefilt_FIX
116static inline void silk_prefilt_FIX(
117 silk_prefilter_state_FIX *P, /* I/O state */
118 opus_int32 st_res_Q12[], /* I short term residual signal */
119 opus_int32 xw_Q3[], /* O prefiltered signal */
120 opus_int32 HarmShapeFIRPacked_Q12, /* I Harmonic shaping coeficients */
121 opus_int Tilt_Q14, /* I Tilt shaping coeficient */
122 opus_int32 LF_shp_Q14, /* I Low-frequancy shaping coeficients */
123 opus_int lag, /* I Lag for harmonic shaping */
124 opus_int length /* I Length of signals */
125)
126{
127 opus_int i, idx, LTP_shp_buf_idx;
128 opus_int32 n_LTP_Q12, n_Tilt_Q10, n_LF_Q10;
129 opus_int32 sLF_MA_shp_Q12, sLF_AR_shp_Q12;
130 opus_int16 *LTP_shp_buf;
131
132 /* To speed up use temp variables instead of using the struct */
133 LTP_shp_buf = P->sLTP_shp;
134 LTP_shp_buf_idx = P->sLTP_shp_buf_idx;
135 sLF_AR_shp_Q12 = P->sLF_AR_shp_Q12;
136 sLF_MA_shp_Q12 = P->sLF_MA_shp_Q12;
137
138 if( lag > 0 ) {
139 for( i = 0; i < length; i++ ) {
140 /* unrolled loop */
141 silk_assert( HARM_SHAPE_FIR_TAPS == 3 );
142 idx = lag + LTP_shp_buf_idx;
143 n_LTP_Q12 = silk_SMULBB( LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 - 1) & LTP_MASK ], HarmShapeFIRPacked_Q12 );
144 n_LTP_Q12 = silk_SMLABT( n_LTP_Q12, LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 ) & LTP_MASK ], HarmShapeFIRPacked_Q12 );
145 n_LTP_Q12 = silk_SMLABB( n_LTP_Q12, LTP_shp_buf[ ( idx - HARM_SHAPE_FIR_TAPS / 2 + 1) & LTP_MASK ], HarmShapeFIRPacked_Q12 );
146
147 n_Tilt_Q10 = silk_SMULWB( sLF_AR_shp_Q12, Tilt_Q14 );
148 n_LF_Q10 = silk_SMLAWB( silk_SMULWT( sLF_AR_shp_Q12, LF_shp_Q14 ), sLF_MA_shp_Q12, LF_shp_Q14 );
149
150 sLF_AR_shp_Q12 = silk_SUB32( st_res_Q12[ i ], silk_LSHIFT( n_Tilt_Q10, 2 ) );
151 sLF_MA_shp_Q12 = silk_SUB32( sLF_AR_shp_Q12, silk_LSHIFT( n_LF_Q10, 2 ) );
152
153 LTP_shp_buf_idx = ( LTP_shp_buf_idx - 1 ) & LTP_MASK;
154 LTP_shp_buf[ LTP_shp_buf_idx ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( sLF_MA_shp_Q12, 12 ) );
155
156 xw_Q3[i] = silk_RSHIFT_ROUND( silk_SUB32( sLF_MA_shp_Q12, n_LTP_Q12 ), 9 );
157 }
158 }
159 else
160 {
161 for( i = 0; i < length; i++ ) {
162
163 n_LTP_Q12 = 0;
164
165 n_Tilt_Q10 = silk_SMULWB( sLF_AR_shp_Q12, Tilt_Q14 );
166 n_LF_Q10 = silk_SMLAWB( silk_SMULWT( sLF_AR_shp_Q12, LF_shp_Q14 ), sLF_MA_shp_Q12, LF_shp_Q14 );
167
168 sLF_AR_shp_Q12 = silk_SUB32( st_res_Q12[ i ], silk_LSHIFT( n_Tilt_Q10, 2 ) );
169 sLF_MA_shp_Q12 = silk_SUB32( sLF_AR_shp_Q12, silk_LSHIFT( n_LF_Q10, 2 ) );
170
171 LTP_shp_buf_idx = ( LTP_shp_buf_idx - 1 ) & LTP_MASK;
172 LTP_shp_buf[ LTP_shp_buf_idx ] = (opus_int16)silk_SAT16( silk_RSHIFT_ROUND( sLF_MA_shp_Q12, 12 ) );
173
174 xw_Q3[i] = silk_RSHIFT_ROUND( sLF_MA_shp_Q12, 9 );
175 }
176 }
177
178 /* Copy temp variable back to state */
179 P->sLF_AR_shp_Q12 = sLF_AR_shp_Q12;
180 P->sLF_MA_shp_Q12 = sLF_MA_shp_Q12;
181 P->sLTP_shp_buf_idx = LTP_shp_buf_idx;
182}
183
184#endif /* __PREFILTER_FIX_MIPSR1_H__ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-20 10:09:42 +0000