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author | Sean Bartell <wingedtachikoma@gmail.com> | 2011-06-25 21:32:25 -0400 |
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committer | Nils Wallménius <nils@rockbox.org> | 2012-04-25 22:13:20 +0200 |
commit | f40bfc9267b13b54e6379dfe7539447662879d24 (patch) | |
tree | 9b20069d5e62809ff434061ad730096836f916f2 /lib/rbcodec/codecs/libspeex/fixed_generic.h | |
parent | a0009907de7a0107d49040d8a180f140e2eff299 (diff) | |
download | rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.tar.gz rockbox-f40bfc9267b13b54e6379dfe7539447662879d24.zip |
Add codecs to librbcodec.
Change-Id: Id7f4717d51ed02d67cb9f9cb3c0ada4a81843f97
Reviewed-on: http://gerrit.rockbox.org/137
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>
Diffstat (limited to 'lib/rbcodec/codecs/libspeex/fixed_generic.h')
-rw-r--r-- | lib/rbcodec/codecs/libspeex/fixed_generic.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspeex/fixed_generic.h b/lib/rbcodec/codecs/libspeex/fixed_generic.h new file mode 100644 index 0000000000..2948177c0b --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/fixed_generic.h | |||
@@ -0,0 +1,106 @@ | |||
1 | /* Copyright (C) 2003 Jean-Marc Valin */ | ||
2 | /** | ||
3 | @file fixed_generic.h | ||
4 | @brief Generic fixed-point operations | ||
5 | */ | ||
6 | /* | ||
7 | Redistribution and use in source and binary forms, with or without | ||
8 | modification, are permitted provided that the following conditions | ||
9 | are met: | ||
10 | |||
11 | - Redistributions of source code must retain the above copyright | ||
12 | notice, this list of conditions and the following disclaimer. | ||
13 | |||
14 | - Redistributions in binary form must reproduce the above copyright | ||
15 | notice, this list of conditions and the following disclaimer in the | ||
16 | documentation and/or other materials provided with the distribution. | ||
17 | |||
18 | - Neither the name of the Xiph.org Foundation nor the names of its | ||
19 | contributors may be used to endorse or promote products derived from | ||
20 | this software without specific prior written permission. | ||
21 | |||
22 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | ||
23 | ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | ||
24 | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | ||
25 | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR | ||
26 | CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | ||
27 | EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | ||
28 | PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | ||
29 | PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | ||
30 | LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | ||
31 | NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | ||
32 | SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | ||
33 | */ | ||
34 | |||
35 | #ifndef FIXED_GENERIC_H | ||
36 | #define FIXED_GENERIC_H | ||
37 | |||
38 | #define QCONST16(x,bits) ((spx_word16_t)(.5+(x)*(((spx_word32_t)1)<<(bits)))) | ||
39 | #define QCONST32(x,bits) ((spx_word32_t)(.5+(x)*(((spx_word32_t)1)<<(bits)))) | ||
40 | |||
41 | #define NEG16(x) (-(x)) | ||
42 | #define NEG32(x) (-(x)) | ||
43 | #define EXTRACT16(x) ((spx_word16_t)(x)) | ||
44 | #define EXTEND32(x) ((spx_word32_t)(x)) | ||
45 | #define SHR16(a,shift) ((a) >> (shift)) | ||
46 | #define SHL16(a,shift) ((a) << (shift)) | ||
47 | #define SHR32(a,shift) ((a) >> (shift)) | ||
48 | #define SHL32(a,shift) ((a) << (shift)) | ||
49 | #define PSHR16(a,shift) (SHR16((a)+((1<<((shift))>>1)),shift)) | ||
50 | #define PSHR32(a,shift) (SHR32((a)+((1<<((shift))>>1)),shift)) | ||
51 | #define VSHR32(a, shift) (((shift)>0) ? SHR32(a, shift) : SHL32(a, -(shift))) | ||
52 | #define SATURATE16(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x))) | ||
53 | #define SATURATE32(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x))) | ||
54 | |||
55 | #define SHR(a,shift) ((a) >> (shift)) | ||
56 | #define SHL(a,shift) ((spx_word32_t)(a) << (shift)) | ||
57 | #define PSHR(a,shift) (SHR((a)+((1<<((shift))>>1)),shift)) | ||
58 | #define SATURATE(x,a) (((x)>(a) ? (a) : (x)<-(a) ? -(a) : (x))) | ||
59 | |||
60 | |||
61 | #define ADD16(a,b) ((spx_word16_t)((spx_word16_t)(a)+(spx_word16_t)(b))) | ||
62 | #define SUB16(a,b) ((spx_word16_t)(a)-(spx_word16_t)(b)) | ||
63 | #define ADD32(a,b) ((spx_word32_t)(a)+(spx_word32_t)(b)) | ||
64 | #define SUB32(a,b) ((spx_word32_t)(a)-(spx_word32_t)(b)) | ||
65 | |||
66 | |||
67 | /* result fits in 16 bits */ | ||
68 | #define MULT16_16_16(a,b) ((((spx_word16_t)(a))*((spx_word16_t)(b)))) | ||
69 | |||
70 | /* (spx_word32_t)(spx_word16_t) gives TI compiler a hint that it's 16x16->32 multiply */ | ||
71 | #define MULT16_16(a,b) (((spx_word32_t)(spx_word16_t)(a))*((spx_word32_t)(spx_word16_t)(b))) | ||
72 | |||
73 | #define MAC16_16(c,a,b) (ADD32((c),MULT16_16((a),(b)))) | ||
74 | #define MULT16_32_Q12(a,b) ADD32(MULT16_16((a),SHR((b),12)), SHR(MULT16_16((a),((b)&0x00000fff)),12)) | ||
75 | #define MULT16_32_Q13(a,b) ADD32(MULT16_16((a),SHR((b),13)), SHR(MULT16_16((a),((b)&0x00001fff)),13)) | ||
76 | #define MULT16_32_Q14(a,b) ADD32(MULT16_16((a),SHR((b),14)), SHR(MULT16_16((a),((b)&0x00003fff)),14)) | ||
77 | |||
78 | #define MULT16_32_Q11(a,b) ADD32(MULT16_16((a),SHR((b),11)), SHR(MULT16_16((a),((b)&0x000007ff)),11)) | ||
79 | #define MAC16_32_Q11(c,a,b) ADD32(c,ADD32(MULT16_16((a),SHR((b),11)), SHR(MULT16_16((a),((b)&0x000007ff)),11))) | ||
80 | |||
81 | #define MULT16_32_P15(a,b) ADD32(MULT16_16((a),SHR((b),15)), PSHR(MULT16_16((a),((b)&0x00007fff)),15)) | ||
82 | #define MULT16_32_Q15(a,b) ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15)) | ||
83 | #define MAC16_32_Q15(c,a,b) ADD32(c,ADD32(MULT16_16((a),SHR((b),15)), SHR(MULT16_16((a),((b)&0x00007fff)),15))) | ||
84 | |||
85 | |||
86 | #define MAC16_16_Q11(c,a,b) (ADD32((c),SHR(MULT16_16((a),(b)),11))) | ||
87 | #define MAC16_16_Q13(c,a,b) (ADD32((c),SHR(MULT16_16((a),(b)),13))) | ||
88 | #define MAC16_16_P13(c,a,b) (ADD32((c),SHR(ADD32(4096,MULT16_16((a),(b))),13))) | ||
89 | |||
90 | #define MULT16_16_Q11_32(a,b) (SHR(MULT16_16((a),(b)),11)) | ||
91 | #define MULT16_16_Q13(a,b) (SHR(MULT16_16((a),(b)),13)) | ||
92 | #define MULT16_16_Q14(a,b) (SHR(MULT16_16((a),(b)),14)) | ||
93 | #define MULT16_16_Q15(a,b) (SHR(MULT16_16((a),(b)),15)) | ||
94 | |||
95 | #define MULT16_16_P13(a,b) (SHR(ADD32(4096,MULT16_16((a),(b))),13)) | ||
96 | #define MULT16_16_P14(a,b) (SHR(ADD32(8192,MULT16_16((a),(b))),14)) | ||
97 | #define MULT16_16_P15(a,b) (SHR(ADD32(16384,MULT16_16((a),(b))),15)) | ||
98 | |||
99 | #define MUL_16_32_R15(a,bh,bl) ADD32(MULT16_16((a),(bh)), SHR(MULT16_16((a),(bl)),15)) | ||
100 | |||
101 | #define DIV32_16(a,b) ((spx_word16_t)(((spx_word32_t)(a))/((spx_word16_t)(b)))) | ||
102 | #define PDIV32_16(a,b) ((spx_word16_t)(((spx_word32_t)(a)+((spx_word16_t)(b)>>1))/((spx_word16_t)(b)))) | ||
103 | #define DIV32(a,b) (((spx_word32_t)(a))/((spx_word32_t)(b))) | ||
104 | #define PDIV32(a,b) (((spx_word32_t)(a)+((spx_word16_t)(b)>>1))/((spx_word32_t)(b))) | ||
105 | |||
106 | #endif | ||