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Diffstat (limited to 'lib/rbcodec/codecs/libspeex/vq_arm4.h')
-rw-r--r-- | lib/rbcodec/codecs/libspeex/vq_arm4.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/lib/rbcodec/codecs/libspeex/vq_arm4.h b/lib/rbcodec/codecs/libspeex/vq_arm4.h new file mode 100644 index 0000000000..d2697e5784 --- /dev/null +++ b/lib/rbcodec/codecs/libspeex/vq_arm4.h | |||
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1 | /* Copyright (C) 2004 Jean-Marc Valin */ | ||
2 | /** | ||
3 | @file vq_arm4.h | ||
4 | @brief ARM4-optimized vq routine | ||
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 | #define OVERRIDE_VQ_NBEST | ||
36 | void vq_nbest(spx_word16_t *in, const spx_word16_t *codebook, int len, int entries, spx_word32_t *E, int N, int *nbest, spx_word32_t *best_dist, char *stack) | ||
37 | { | ||
38 | int i,j; | ||
39 | for (i=0;i<entries;i+=4) | ||
40 | { | ||
41 | #if 1 | ||
42 | spx_word32_t dist1, dist2, dist3, dist4; | ||
43 | int dead1, dead2, dead3, dead4, dead5, dead6, dead7, dead8; | ||
44 | __asm__ __volatile__ ( | ||
45 | "mov %0, #0 \n\t" | ||
46 | "mov %1, #0 \n\t" | ||
47 | "mov %2, #0 \n\t" | ||
48 | "mov %3, #0 \n\t" | ||
49 | "mov %10, %4 \n\t" | ||
50 | "add %4, %4, %4\n\t" | ||
51 | ".vqloop%=:\n\t" | ||
52 | "ldrsh %7, [%5], #2 \n\t" | ||
53 | "ldrsh %8, [%6] \n\t" | ||
54 | "mov %9, %6 \n\t" | ||
55 | "mla %0, %7, %8, %0 \n\t" | ||
56 | "ldrsh %8, [%9, %4]! \n\t" | ||
57 | "mla %1, %7, %8, %1 \n\t" | ||
58 | "ldrsh %8, [%9, %4]!\n\t" | ||
59 | "mla %2, %7, %8, %2 \n\t" | ||
60 | "ldrsh %8, [%9, %4]! \n\t" | ||
61 | "mla %3, %7, %8, %3 \n\t" | ||
62 | "subs %10, %10, #1 \n\t" | ||
63 | "add %6, %6, #2 \n\t" | ||
64 | "bne .vqloop%=" | ||
65 | : "=r" (dist1), "=r" (dist2), "=r" (dist3), "=r" (dist4), | ||
66 | "=r" (dead1), "=r" (dead2), "=r" (codebook), "=r" (dead4), | ||
67 | "=r" (dead5), "=r" (dead6), "=r" (dead7) | ||
68 | : "4" (len), "5" (in), "6" (codebook) | ||
69 | : "cc", "memory"); | ||
70 | #else | ||
71 | dist1=dist2=dist3=dist4=0; | ||
72 | /* spx_word32_t dist1=0; | ||
73 | spx_word32_t dist2=0; | ||
74 | spx_word32_t dist3=0; | ||
75 | spx_word32_t dist4=0;*/ | ||
76 | for (j=0;j<2;j++) | ||
77 | { | ||
78 | const spx_word16_t *code = codebook; | ||
79 | dist1 = MAC16_16(dist1,in[j],*code); | ||
80 | code += len; | ||
81 | dist2 = MAC16_16(dist2,in[j],*code); | ||
82 | code += len; | ||
83 | dist3 = MAC16_16(dist3,in[j],*code); | ||
84 | code += len; | ||
85 | dist4 = MAC16_16(dist4,in[j],*code); | ||
86 | codebook++; | ||
87 | } | ||
88 | #endif | ||
89 | dist1=SUB32(SHR(*E++,1),dist1); | ||
90 | if (dist1<*best_dist || i==0) | ||
91 | { | ||
92 | *best_dist=dist1; | ||
93 | *nbest=i; | ||
94 | } | ||
95 | dist2=SUB32(SHR(*E++,1),dist2); | ||
96 | if (dist2<*best_dist) | ||
97 | { | ||
98 | *best_dist=dist2; | ||
99 | *nbest=i+1; | ||
100 | } | ||
101 | dist3=SUB32(SHR(*E++,1),dist3); | ||
102 | if (dist3<*best_dist) | ||
103 | { | ||
104 | *best_dist=dist3; | ||
105 | *nbest=i+2; | ||
106 | } | ||
107 | dist4=SUB32(SHR(*E++,1),dist4); | ||
108 | if (dist4<*best_dist) | ||
109 | { | ||
110 | *best_dist=dist4; | ||
111 | *nbest=i+3; | ||
112 | } | ||
113 | codebook += 3*len; | ||
114 | } | ||
115 | } | ||