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author | Thomas Martitz <kugel@rockbox.org> | 2012-01-06 06:26:48 +0100 |
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committer | Thomas Martitz <kugel@rockbox.org> | 2012-01-22 18:46:45 +0100 |
commit | 3c17f28eca86ff3ee9e7cef6c4d5198c27b7c03c (patch) | |
tree | 672ee79463fc3c20c186f6d34ebd88cbe430c662 /firmware/target/arm/pcm-mixer-armv6.c | |
parent | 991ae1e39553172a7dd6cd8c634aebfce892e261 (diff) | |
download | rockbox-3c17f28eca86ff3ee9e7cef6c4d5198c27b7c03c.tar.gz rockbox-3c17f28eca86ff3ee9e7cef6c4d5198c27b7c03c.zip |
Move pcm_mixer helper routines to firmware/asm.
Diffstat (limited to 'firmware/target/arm/pcm-mixer-armv6.c')
-rw-r--r-- | firmware/target/arm/pcm-mixer-armv6.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/firmware/target/arm/pcm-mixer-armv6.c b/firmware/target/arm/pcm-mixer-armv6.c deleted file mode 100644 index 94eecd0f90..0000000000 --- a/firmware/target/arm/pcm-mixer-armv6.c +++ /dev/null | |||
@@ -1,118 +0,0 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2011 by Michael Sevakis | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #define MIXER_OPTIMIZED_MIX_SAMPLES | ||
22 | #define MIXER_OPTIMIZED_WRITE_SAMPLES | ||
23 | |||
24 | /* Mix channels' samples and apply gain factors */ | ||
25 | static FORCE_INLINE void mix_samples(void *out, | ||
26 | void *src0, | ||
27 | int32_t src0_amp, | ||
28 | void *src1, | ||
29 | int32_t src1_amp, | ||
30 | size_t size) | ||
31 | { | ||
32 | uint32_t s0, s1; | ||
33 | |||
34 | if (src0_amp == MIX_AMP_UNITY && src1_amp == MIX_AMP_UNITY) | ||
35 | { | ||
36 | /* Both are unity amplitude */ | ||
37 | asm volatile ( | ||
38 | "1: \n" | ||
39 | "ldr %4, [%1], #4 \n" | ||
40 | "ldr %5, [%2], #4 \n" | ||
41 | "subs %3, %3, #4 \n" | ||
42 | "qadd16 %5, %5, %4 \n" | ||
43 | "str %5, [%0], #4 \n" | ||
44 | "bhi 1b \n" | ||
45 | : "+r"(out), "+r"(src0), "+r"(src1), "+r"(size), | ||
46 | "=&r"(s0), "=&r"(s1)); | ||
47 | } | ||
48 | else | ||
49 | { | ||
50 | /* One or neither are unity amplitude */ | ||
51 | uint32_t tmp; | ||
52 | asm volatile ( | ||
53 | "1: \n" | ||
54 | "ldr %4, [%1], #4 \n" | ||
55 | "ldr %5, [%2], #4 \n" | ||
56 | "subs %3, %3, #4 \n" | ||
57 | "smulwb %6, %7, %4 \n" | ||
58 | "smulwt %4, %7, %4 \n" | ||
59 | "smlawb %6, %8, %5, %6 \n" | ||
60 | "smlawt %4, %8, %5, %4 \n" | ||
61 | "ssat %6, #16, %6 \n" | ||
62 | "ssat %4, #16, %4 \n" | ||
63 | "pkhbt %6, %6, %4, asl #16 \n" | ||
64 | "str %6, [%0], #4 \n" | ||
65 | "bhi 1b \n" | ||
66 | : "+r"(out), "+r"(src0), "+r"(src1), "+r"(size), | ||
67 | "=&r"(s0), "=&r"(s1), "=&r"(tmp) | ||
68 | : "r"(src0_amp), "r"(src1_amp)); | ||
69 | } | ||
70 | } | ||
71 | |||
72 | /* Write channel's samples and apply gain factor */ | ||
73 | static FORCE_INLINE void write_samples(void *out, | ||
74 | void *src, | ||
75 | int32_t amp, | ||
76 | size_t size) | ||
77 | { | ||
78 | if (LIKELY(amp == MIX_AMP_UNITY)) | ||
79 | { | ||
80 | /* Channel is unity amplitude */ | ||
81 | asm volatile ( | ||
82 | "ands r1, %2, #0x1f \n" | ||
83 | "beq 2f \n" | ||
84 | "1: \n" | ||
85 | "ldr r0, [%1], #4 \n" | ||
86 | "subs r1, r1, #4 \n" | ||
87 | "str r0, [%0], #4 \n" | ||
88 | "bne 1b \n" | ||
89 | "bics %2, %2, #0x1f \n" | ||
90 | "beq 3f \n" | ||
91 | "2: \n" | ||
92 | "ldmia %1!, { r0-r7 } \n" | ||
93 | "subs %2, %2, #32 \n" | ||
94 | "stmia %0!, { r0-r7 } \n" | ||
95 | "bhi 2b \n" | ||
96 | "3: \n" | ||
97 | : "+r"(out), "+r"(src), "+r"(size) | ||
98 | : | ||
99 | : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7"); | ||
100 | } | ||
101 | else | ||
102 | { | ||
103 | /* Channel needs amplitude cut */ | ||
104 | uint32_t s, tmp; | ||
105 | asm volatile( | ||
106 | "1: \n" | ||
107 | "ldr %3, [%1], #4 \n" | ||
108 | "subs %2, %2, #4 \n" | ||
109 | "smulwt %4, %5, %3 \n" | ||
110 | "smulwb %3, %5, %3 \n" | ||
111 | "pkhbt %4, %3, %4, asl #16 \n" | ||
112 | "str %4, [%0], #4 \n" | ||
113 | "bhi 1b \n" | ||
114 | : "+r"(out), "+r"(src), "+r"(size), | ||
115 | "=&r"(s), "=&r"(tmp) | ||
116 | : "r"(amp)); | ||
117 | } | ||
118 | } | ||