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author | William Wilgus <me.theuser@yahoo.com> | 2019-01-04 02:01:18 -0600 |
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committer | Solomon Peachy <pizza@shaftnet.org> | 2021-04-23 14:23:04 +0000 |
commit | 14c6bb798d6bebc80f07e863236adbaf8d156a9c (patch) | |
tree | 551a4b641906c2626af844fa3239c1b2b1ff0ad3 /lib/rbcodec/codecs/libopus/celt/mips/kiss_fft_mipsr1.h | |
parent | 75d93937965ec4df70d37df6d4feea04577c996b (diff) | |
download | rockbox-14c6bb798d6bebc80f07e863236adbaf8d156a9c.tar.gz rockbox-14c6bb798d6bebc80f07e863236adbaf8d156a9c.zip |
Sync opus codec to upstream git
Change-Id: I0cfcc0005c4ad7bfbb1aaf454188ce70fb043dc1
Diffstat (limited to 'lib/rbcodec/codecs/libopus/celt/mips/kiss_fft_mipsr1.h')
-rw-r--r-- | lib/rbcodec/codecs/libopus/celt/mips/kiss_fft_mipsr1.h | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libopus/celt/mips/kiss_fft_mipsr1.h b/lib/rbcodec/codecs/libopus/celt/mips/kiss_fft_mipsr1.h new file mode 100644 index 0000000000..400ca4de9c --- /dev/null +++ b/lib/rbcodec/codecs/libopus/celt/mips/kiss_fft_mipsr1.h | |||
@@ -0,0 +1,167 @@ | |||
1 | /*Copyright (c) 2013, Xiph.Org Foundation and contributors. | ||
2 | |||
3 | All rights reserved. | ||
4 | |||
5 | Redistribution and use in source and binary forms, with or without | ||
6 | modification, are permitted provided that the following conditions are met: | ||
7 | |||
8 | * Redistributions of source code must retain the above copyright notice, | ||
9 | this list of conditions and the following disclaimer. | ||
10 | * Redistributions in binary form must reproduce the above copyright notice, | ||
11 | this list of conditions and the following disclaimer in the | ||
12 | documentation and/or other materials provided with the distribution. | ||
13 | |||
14 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | ||
15 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
16 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
17 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE | ||
18 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | ||
19 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | ||
20 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | ||
21 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | ||
22 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | ||
23 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | ||
24 | POSSIBILITY OF SUCH DAMAGE.*/ | ||
25 | |||
26 | #ifndef KISS_FFT_MIPSR1_H | ||
27 | #define KISS_FFT_MIPSR1_H | ||
28 | |||
29 | #if !defined(KISS_FFT_GUTS_H) | ||
30 | #error "This file should only be included from _kiss_fft_guts.h" | ||
31 | #endif | ||
32 | |||
33 | #ifdef FIXED_POINT | ||
34 | |||
35 | #define S_MUL_ADD(a, b, c, d) (S_MUL(a,b)+S_MUL(c,d)) | ||
36 | #define S_MUL_SUB(a, b, c, d) (S_MUL(a,b)-S_MUL(c,d)) | ||
37 | |||
38 | #undef S_MUL_ADD | ||
39 | static inline int S_MUL_ADD(int a, int b, int c, int d) { | ||
40 | int m; | ||
41 | asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b)); | ||
42 | asm volatile("madd $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d)); | ||
43 | asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15)); | ||
44 | return m; | ||
45 | } | ||
46 | |||
47 | #undef S_MUL_SUB | ||
48 | static inline int S_MUL_SUB(int a, int b, int c, int d) { | ||
49 | int m; | ||
50 | asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a), "r" ((int)b)); | ||
51 | asm volatile("msub $ac1, %0, %1" : : "r" ((int)c), "r" ((int)d)); | ||
52 | asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m): "i" (15)); | ||
53 | return m; | ||
54 | } | ||
55 | |||
56 | #undef C_MUL | ||
57 | # define C_MUL(m,a,b) (m=C_MUL_fun(a,b)) | ||
58 | static inline kiss_fft_cpx C_MUL_fun(kiss_fft_cpx a, kiss_twiddle_cpx b) { | ||
59 | kiss_fft_cpx m; | ||
60 | |||
61 | asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a.r), "r" ((int)b.r)); | ||
62 | asm volatile("msub $ac1, %0, %1" : : "r" ((int)a.i), "r" ((int)b.i)); | ||
63 | asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m.r): "i" (15)); | ||
64 | asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a.r), "r" ((int)b.i)); | ||
65 | asm volatile("madd $ac1, %0, %1" : : "r" ((int)a.i), "r" ((int)b.r)); | ||
66 | asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m.i): "i" (15)); | ||
67 | |||
68 | return m; | ||
69 | } | ||
70 | #undef C_MULC | ||
71 | # define C_MULC(m,a,b) (m=C_MULC_fun(a,b)) | ||
72 | static inline kiss_fft_cpx C_MULC_fun(kiss_fft_cpx a, kiss_twiddle_cpx b) { | ||
73 | kiss_fft_cpx m; | ||
74 | |||
75 | asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a.r), "r" ((int)b.r)); | ||
76 | asm volatile("madd $ac1, %0, %1" : : "r" ((int)a.i), "r" ((int)b.i)); | ||
77 | asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m.r): "i" (15)); | ||
78 | asm volatile("MULT $ac1, %0, %1" : : "r" ((int)a.i), "r" ((int)b.r)); | ||
79 | asm volatile("msub $ac1, %0, %1" : : "r" ((int)a.r), "r" ((int)b.i)); | ||
80 | asm volatile("EXTR.W %0,$ac1, %1" : "=r" (m.i): "i" (15)); | ||
81 | |||
82 | return m; | ||
83 | } | ||
84 | |||
85 | #endif /* FIXED_POINT */ | ||
86 | |||
87 | #define OVERRIDE_kf_bfly5 | ||
88 | static void kf_bfly5( | ||
89 | kiss_fft_cpx * Fout, | ||
90 | const size_t fstride, | ||
91 | const kiss_fft_state *st, | ||
92 | int m, | ||
93 | int N, | ||
94 | int mm | ||
95 | ) | ||
96 | { | ||
97 | kiss_fft_cpx *Fout0,*Fout1,*Fout2,*Fout3,*Fout4; | ||
98 | int i, u; | ||
99 | kiss_fft_cpx scratch[13]; | ||
100 | |||
101 | const kiss_twiddle_cpx *tw; | ||
102 | kiss_twiddle_cpx ya,yb; | ||
103 | kiss_fft_cpx * Fout_beg = Fout; | ||
104 | |||
105 | #ifdef FIXED_POINT | ||
106 | ya.r = 10126; | ||
107 | ya.i = -31164; | ||
108 | yb.r = -26510; | ||
109 | yb.i = -19261; | ||
110 | #else | ||
111 | ya = st->twiddles[fstride*m]; | ||
112 | yb = st->twiddles[fstride*2*m]; | ||
113 | #endif | ||
114 | |||
115 | tw=st->twiddles; | ||
116 | |||
117 | for (i=0;i<N;i++) | ||
118 | { | ||
119 | Fout = Fout_beg + i*mm; | ||
120 | Fout0=Fout; | ||
121 | Fout1=Fout0+m; | ||
122 | Fout2=Fout0+2*m; | ||
123 | Fout3=Fout0+3*m; | ||
124 | Fout4=Fout0+4*m; | ||
125 | |||
126 | /* For non-custom modes, m is guaranteed to be a multiple of 4. */ | ||
127 | for ( u=0; u<m; ++u ) { | ||
128 | scratch[0] = *Fout0; | ||
129 | |||
130 | |||
131 | C_MUL(scratch[1] ,*Fout1, tw[u*fstride]); | ||
132 | C_MUL(scratch[2] ,*Fout2, tw[2*u*fstride]); | ||
133 | C_MUL(scratch[3] ,*Fout3, tw[3*u*fstride]); | ||
134 | C_MUL(scratch[4] ,*Fout4, tw[4*u*fstride]); | ||
135 | |||
136 | C_ADD( scratch[7],scratch[1],scratch[4]); | ||
137 | C_SUB( scratch[10],scratch[1],scratch[4]); | ||
138 | C_ADD( scratch[8],scratch[2],scratch[3]); | ||
139 | C_SUB( scratch[9],scratch[2],scratch[3]); | ||
140 | |||
141 | Fout0->r += scratch[7].r + scratch[8].r; | ||
142 | Fout0->i += scratch[7].i + scratch[8].i; | ||
143 | scratch[5].r = scratch[0].r + S_MUL_ADD(scratch[7].r,ya.r,scratch[8].r,yb.r); | ||
144 | scratch[5].i = scratch[0].i + S_MUL_ADD(scratch[7].i,ya.r,scratch[8].i,yb.r); | ||
145 | |||
146 | scratch[6].r = S_MUL_ADD(scratch[10].i,ya.i,scratch[9].i,yb.i); | ||
147 | scratch[6].i = -S_MUL_ADD(scratch[10].r,ya.i,scratch[9].r,yb.i); | ||
148 | |||
149 | C_SUB(*Fout1,scratch[5],scratch[6]); | ||
150 | C_ADD(*Fout4,scratch[5],scratch[6]); | ||
151 | |||
152 | scratch[11].r = scratch[0].r + S_MUL_ADD(scratch[7].r,yb.r,scratch[8].r,ya.r); | ||
153 | scratch[11].i = scratch[0].i + S_MUL_ADD(scratch[7].i,yb.r,scratch[8].i,ya.r); | ||
154 | |||
155 | scratch[12].r = S_MUL_SUB(scratch[9].i,ya.i,scratch[10].i,yb.i); | ||
156 | scratch[12].i = S_MUL_SUB(scratch[10].r,yb.i,scratch[9].r,ya.i); | ||
157 | |||
158 | C_ADD(*Fout2,scratch[11],scratch[12]); | ||
159 | C_SUB(*Fout3,scratch[11],scratch[12]); | ||
160 | |||
161 | ++Fout0;++Fout1;++Fout2;++Fout3;++Fout4; | ||
162 | } | ||
163 | } | ||
164 | } | ||
165 | |||
166 | |||
167 | #endif /* KISS_FFT_MIPSR1_H */ | ||