diff options
Diffstat (limited to 'lib/rbcodec/codecs/libspeex/fixed_bfin.h')
-rw-r--r-- | lib/rbcodec/codecs/libspeex/fixed_bfin.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspeex/fixed_bfin.h b/lib/rbcodec/codecs/libspeex/fixed_bfin.h new file mode 100644 index 0000000000..aa26f6a87d --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/fixed_bfin.h | |||
@@ -0,0 +1,173 @@ | |||
1 | /* Copyright (C) 2005 Analog Devices | ||
2 | Author: Jean-Marc Valin */ | ||
3 | /** | ||
4 | @file fixed_bfin.h | ||
5 | @brief Blackfin fixed-point operations | ||
6 | */ | ||
7 | /* | ||
8 | Redistribution and use in source and binary forms, with or without | ||
9 | modification, are permitted provided that the following conditions | ||
10 | are met: | ||
11 | |||
12 | - Redistributions of source code must retain the above copyright | ||
13 | notice, this list of conditions and the following disclaimer. | ||
14 | |||
15 | - Redistributions in binary form must reproduce the above copyright | ||
16 | notice, this list of conditions and the following disclaimer in the | ||
17 | documentation and/or other materials provided with the distribution. | ||
18 | |||
19 | - Neither the name of the Xiph.org Foundation nor the names of its | ||
20 | contributors may be used to endorse or promote products derived from | ||
21 | this software without specific prior written permission. | ||
22 | |||
23 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
24 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
25 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
26 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR | ||
27 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
28 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
29 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
30 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
31 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
32 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
33 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
34 | */ | ||
35 | |||
36 | #ifndef FIXED_BFIN_H | ||
37 | #define FIXED_BFIN_H | ||
38 | |||
39 | #undef PDIV32_16 | ||
40 | static inline spx_word16_t PDIV32_16(spx_word32_t a, spx_word16_t b) | ||
41 | { | ||
42 | spx_word32_t res, bb; | ||
43 | bb = b; | ||
44 | a += b>>1; | ||
45 | __asm__ ( | ||
46 | "P0 = 15;\n\t" | ||
47 | "R0 = %1;\n\t" | ||
48 | "R1 = %2;\n\t" | ||
49 | //"R0 = R0 + R1;\n\t" | ||
50 | "R0 <<= 1;\n\t" | ||
51 | "DIVS (R0, R1);\n\t" | ||
52 | "LOOP divide%= LC0 = P0;\n\t" | ||
53 | "LOOP_BEGIN divide%=;\n\t" | ||
54 | "DIVQ (R0, R1);\n\t" | ||
55 | "LOOP_END divide%=;\n\t" | ||
56 | "R0 = R0.L;\n\t" | ||
57 | "%0 = R0;\n\t" | ||
58 | : "=m" (res) | ||
59 | : "m" (a), "m" (bb) | ||
60 | : "P0", "R0", "R1", "cc"); | ||
61 | return res; | ||
62 | } | ||
63 | |||
64 | #undef DIV32_16 | ||
65 | static inline spx_word16_t DIV32_16(spx_word32_t a, spx_word16_t b) | ||
66 | { | ||
67 | spx_word32_t res, bb; | ||
68 | bb = b; | ||
69 | /* Make the roundinf consistent with the C version | ||
70 | (do we need to do that?)*/ | ||
71 | if (a<0) | ||
72 | a += (b-1); | ||
73 | __asm__ ( | ||
74 | "P0 = 15;\n\t" | ||
75 | "R0 = %1;\n\t" | ||
76 | "R1 = %2;\n\t" | ||
77 | "R0 <<= 1;\n\t" | ||
78 | "DIVS (R0, R1);\n\t" | ||
79 | "LOOP divide%= LC0 = P0;\n\t" | ||
80 | "LOOP_BEGIN divide%=;\n\t" | ||
81 | "DIVQ (R0, R1);\n\t" | ||
82 | "LOOP_END divide%=;\n\t" | ||
83 | "R0 = R0.L;\n\t" | ||
84 | "%0 = R0;\n\t" | ||
85 | : "=m" (res) | ||
86 | : "m" (a), "m" (bb) | ||
87 | : "P0", "R0", "R1", "cc"); | ||
88 | return res; | ||
89 | } | ||
90 | |||
91 | #undef MAX16 | ||
92 | static inline spx_word16_t MAX16(spx_word16_t a, spx_word16_t b) | ||
93 | { | ||
94 | spx_word32_t res; | ||
95 | __asm__ ( | ||
96 | "%1 = %1.L (X);\n\t" | ||
97 | "%2 = %2.L (X);\n\t" | ||
98 | "%0 = MAX(%1,%2);" | ||
99 | : "=d" (res) | ||
100 | : "%d" (a), "d" (b) | ||
101 | ); | ||
102 | return res; | ||
103 | } | ||
104 | |||
105 | #undef MULT16_32_Q15 | ||
106 | static inline spx_word32_t MULT16_32_Q15(spx_word16_t a, spx_word32_t b) | ||
107 | { | ||
108 | spx_word32_t res; | ||
109 | __asm__ | ||
110 | ( | ||
111 | "A1 = %2.L*%1.L (M);\n\t" | ||
112 | "A1 = A1 >>> 15;\n\t" | ||
113 | "%0 = (A1 += %2.L*%1.H) ;\n\t" | ||
114 | : "=&W" (res), "=&d" (b) | ||
115 | : "d" (a), "1" (b) | ||
116 | : "A1" | ||
117 | ); | ||
118 | return res; | ||
119 | } | ||
120 | |||
121 | #undef MAC16_32_Q15 | ||
122 | static inline spx_word32_t MAC16_32_Q15(spx_word32_t c, spx_word16_t a, spx_word32_t b) | ||
123 | { | ||
124 | spx_word32_t res; | ||
125 | __asm__ | ||
126 | ( | ||
127 | "A1 = %2.L*%1.L (M);\n\t" | ||
128 | "A1 = A1 >>> 15;\n\t" | ||
129 | "%0 = (A1 += %2.L*%1.H);\n\t" | ||
130 | "%0 = %0 + %4;\n\t" | ||
131 | : "=&W" (res), "=&d" (b) | ||
132 | : "d" (a), "1" (b), "d" (c) | ||
133 | : "A1" | ||
134 | ); | ||
135 | return res; | ||
136 | } | ||
137 | |||
138 | #undef MULT16_32_Q14 | ||
139 | static inline spx_word32_t MULT16_32_Q14(spx_word16_t a, spx_word32_t b) | ||
140 | { | ||
141 | spx_word32_t res; | ||
142 | __asm__ | ||
143 | ( | ||
144 | "%2 <<= 1;\n\t" | ||
145 | "A1 = %1.L*%2.L (M);\n\t" | ||
146 | "A1 = A1 >>> 15;\n\t" | ||
147 | "%0 = (A1 += %1.L*%2.H);\n\t" | ||
148 | : "=W" (res), "=d" (a), "=d" (b) | ||
149 | : "1" (a), "2" (b) | ||
150 | : "A1" | ||
151 | ); | ||
152 | return res; | ||
153 | } | ||
154 | |||
155 | #undef MAC16_32_Q14 | ||
156 | static inline spx_word32_t MAC16_32_Q14(spx_word32_t c, spx_word16_t a, spx_word32_t b) | ||
157 | { | ||
158 | spx_word32_t res; | ||
159 | __asm__ | ||
160 | ( | ||
161 | "%1 <<= 1;\n\t" | ||
162 | "A1 = %2.L*%1.L (M);\n\t" | ||
163 | "A1 = A1 >>> 15;\n\t" | ||
164 | "%0 = (A1 += %2.L*%1.H);\n\t" | ||
165 | "%0 = %0 + %4;\n\t" | ||
166 | : "=&W" (res), "=&d" (b) | ||
167 | : "d" (a), "1" (b), "d" (c) | ||
168 | : "A1" | ||
169 | ); | ||
170 | return res; | ||
171 | } | ||
172 | |||
173 | #endif | ||