diff options
Diffstat (limited to 'firmware/target/arm/pcm-mixer-armv5.c')
-rw-r--r-- | firmware/target/arm/pcm-mixer-armv5.c | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/firmware/target/arm/pcm-mixer-armv5.c b/firmware/target/arm/pcm-mixer-armv5.c deleted file mode 100644 index 64f2c86f52..0000000000 --- a/firmware/target/arm/pcm-mixer-armv5.c +++ /dev/null | |||
@@ -1,106 +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 | |||
22 | #define MIXER_OPTIMIZED_WRITE_SAMPLES | ||
23 | #define MIXER_OPTIMIZED_MIX_SAMPLES | ||
24 | |||
25 | /* Mix channels' samples and apply gain factors */ | ||
26 | static FORCE_INLINE void mix_samples(void *out, | ||
27 | void *src0, | ||
28 | int32_t src0_amp, | ||
29 | void *src1, | ||
30 | int32_t src1_amp, | ||
31 | size_t size) | ||
32 | { | ||
33 | int32_t s0, s1, tmp; | ||
34 | asm volatile ( | ||
35 | "1: \n" | ||
36 | "ldr %4, [%1], #4 \n" | ||
37 | "ldr %5, [%2], #4 \n" | ||
38 | "smulwb %6, %7, %4 \n" | ||
39 | "smulwt %4, %7, %4 \n" | ||
40 | "smlawb %6, %8, %5, %6 \n" | ||
41 | "smlawt %4, %8, %5, %4 \n" | ||
42 | "mov %5, %6, asr #15 \n" | ||
43 | "teq %5, %5, asr #31 \n" | ||
44 | "eorne %6, %9, %6, asr #31 \n" | ||
45 | "mov %5, %4, asr #15 \n" | ||
46 | "teq %5, %5, asr #31 \n" | ||
47 | "eorne %4, %9, %4, asr #31 \n" | ||
48 | "subs %3, %3, #4 \n" | ||
49 | "and %6, %6, %9, lsr #16 \n" | ||
50 | "orr %6, %6, %4, lsl #16 \n" | ||
51 | "str %6, [%0], #4 \n" | ||
52 | "bhi 1b \n" | ||
53 | : "+r"(out), "+r"(src0), "+r"(src1), "+r"(size), | ||
54 | "=&r"(s0), "=&r"(s1), "=&r"(tmp) | ||
55 | : "r"(src0_amp), "r"(src1_amp), "r"(0xffff7fff)); | ||
56 | } | ||
57 | |||
58 | /* Write channel's samples and apply gain factor */ | ||
59 | static FORCE_INLINE void write_samples(void *out, | ||
60 | void *src, | ||
61 | int32_t amp, | ||
62 | size_t size) | ||
63 | { | ||
64 | if (LIKELY(amp == MIX_AMP_UNITY)) | ||
65 | { | ||
66 | /* Channel is unity amplitude */ | ||
67 | asm volatile ( | ||
68 | "ands r1, %2, #0x1f \n" | ||
69 | "beq 2f \n" | ||
70 | "1: \n" | ||
71 | "ldr r0, [%1], #4 \n" | ||
72 | "subs r1, r1, #4 \n" | ||
73 | "str r0, [%0], #4 \n" | ||
74 | "bne 1b \n" | ||
75 | "bics %2, %2, #0x1f \n" | ||
76 | "beq 3f \n" | ||
77 | "2: \n" | ||
78 | "ldmia %1!, { r0-r7 } \n" | ||
79 | "subs %2, %2, #32 \n" | ||
80 | "stmia %0!, { r0-r7 } \n" | ||
81 | "bhi 2b \n" | ||
82 | "3: \n" | ||
83 | : "+r"(out), "+r"(src), "+r"(size) | ||
84 | : | ||
85 | : "r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7"); | ||
86 | } | ||
87 | else | ||
88 | { | ||
89 | /* Channel needs amplitude cut */ | ||
90 | uint32_t l, h; | ||
91 | asm volatile ( | ||
92 | "1: \n" | ||
93 | "ldr %3, [%1], #4 \n" | ||
94 | "subs %2, %2, #4 \n" | ||
95 | "smulwt %4, %5, %3 \n" | ||
96 | "smulwb %3, %5, %3 \n" | ||
97 | "mov %4, %4, lsl #16 \n" | ||
98 | "mov %3, %3, lsl #16 \n" | ||
99 | "orr %4, %4, %3, lsr #16 \n" | ||
100 | "str %4, [%0], #4 \n" | ||
101 | "bhi 1b \n" | ||
102 | : "+r"(out), "+r"(src), "+r"(size), | ||
103 | "=&r"(l), "=&r"(h) | ||
104 | : "r"(amp)); | ||
105 | } | ||
106 | } | ||