| 1 | /*
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| 2 | * QEMU Mixing engine
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| 3 | *
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| 4 | * Copyright (c) 2004-2005 Vassili Karpov (malc)
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| 5 | * Copyright (c) 1998 Fabrice Bellard
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| 6 | *
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| 7 | * Permission is hereby granted, free of charge, to any person obtaining a copy
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| 8 | * of this software and associated documentation files (the "Software"), to deal
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| 9 | * in the Software without restriction, including without limitation the rights
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| 10 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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| 11 | * copies of the Software, and to permit persons to whom the Software is
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| 12 | * furnished to do so, subject to the following conditions:
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| 13 | *
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| 14 | * The above copyright notice and this permission notice shall be included in
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| 15 | * all copies or substantial portions of the Software.
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| 16 | *
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| 17 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 18 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 19 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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| 20 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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| 21 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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| 22 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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| 23 | * THE SOFTWARE.
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| 24 | */
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| 25 |
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| 26 | #include "VBoxDD.h"
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| 27 | #include "vl_vbox.h"
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| 28 | #include "audio.h"
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| 29 | #ifdef VBOX
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| 30 | # include <iprt/asm-math.h>
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| 31 | # include <iprt/mem.h>
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| 32 | #endif
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| 33 |
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| 34 | #define AUDIO_CAP "mixeng"
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| 35 | #include "audio_int.h"
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| 36 |
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| 37 | #ifndef VBOX
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| 38 | #define NOVOL
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| 39 | #endif
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| 40 |
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| 41 | /* 8 bit */
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| 42 | #define ENDIAN_CONVERSION natural
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| 43 | #define ENDIAN_CONVERT(v) (v)
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| 44 |
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| 45 | /* Signed 8 bit */
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| 46 | #define IN_T int8_t
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| 47 | #define IN_MIN SCHAR_MIN
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| 48 | #define IN_MAX SCHAR_MAX
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| 49 | #define SIGNED
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| 50 | #define SHIFT 8
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| 51 | #include "mixeng_template.h"
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| 52 | #undef SIGNED
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| 53 | #undef IN_MAX
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| 54 | #undef IN_MIN
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| 55 | #undef IN_T
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| 56 | #undef SHIFT
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| 57 |
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| 58 | /* Unsigned 8 bit */
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| 59 | #define IN_T uint8_t
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| 60 | #define IN_MIN 0
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| 61 | #define IN_MAX UCHAR_MAX
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| 62 | #define SHIFT 8
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| 63 | #include "mixeng_template.h"
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| 64 | #undef IN_MAX
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| 65 | #undef IN_MIN
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| 66 | #undef IN_T
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| 67 | #undef SHIFT
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| 68 |
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| 69 | #undef ENDIAN_CONVERT
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| 70 | #undef ENDIAN_CONVERSION
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| 71 |
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| 72 | /* Signed 16 bit */
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| 73 | #define IN_T int16_t
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| 74 | #define IN_MIN SHRT_MIN
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| 75 | #define IN_MAX SHRT_MAX
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| 76 | #define SIGNED
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| 77 | #define SHIFT 16
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| 78 | #define ENDIAN_CONVERSION natural
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| 79 | #define ENDIAN_CONVERT(v) (v)
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| 80 | #include "mixeng_template.h"
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| 81 | #undef ENDIAN_CONVERT
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| 82 | #undef ENDIAN_CONVERSION
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| 83 | #define ENDIAN_CONVERSION swap
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| 84 | #define ENDIAN_CONVERT(v) bswap16 (v)
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| 85 | #include "mixeng_template.h"
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| 86 | #undef ENDIAN_CONVERT
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| 87 | #undef ENDIAN_CONVERSION
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| 88 | #undef SIGNED
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| 89 | #undef IN_MAX
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| 90 | #undef IN_MIN
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| 91 | #undef IN_T
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| 92 | #undef SHIFT
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| 93 |
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| 94 | /* Unsigned 16 bit */
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| 95 | #define IN_T uint16_t
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| 96 | #define IN_MIN 0
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| 97 | #define IN_MAX USHRT_MAX
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| 98 | #define SHIFT 16
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| 99 | #define ENDIAN_CONVERSION natural
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| 100 | #define ENDIAN_CONVERT(v) (v)
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| 101 | #include "mixeng_template.h"
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| 102 | #undef ENDIAN_CONVERT
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| 103 | #undef ENDIAN_CONVERSION
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| 104 | #define ENDIAN_CONVERSION swap
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| 105 | #define ENDIAN_CONVERT(v) bswap16 (v)
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| 106 | #include "mixeng_template.h"
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| 107 | #undef ENDIAN_CONVERT
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| 108 | #undef ENDIAN_CONVERSION
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| 109 | #undef IN_MAX
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| 110 | #undef IN_MIN
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| 111 | #undef IN_T
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| 112 | #undef SHIFT
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| 113 |
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| 114 | /* Signed 32 bit */
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| 115 | #define IN_T int32_t
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| 116 | #define IN_MIN INT32_MIN
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| 117 | #define IN_MAX INT32_MAX
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| 118 | #define SIGNED
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| 119 | #define SHIFT 32
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| 120 | #define ENDIAN_CONVERSION natural
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| 121 | #define ENDIAN_CONVERT(v) (v)
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| 122 | #include "mixeng_template.h"
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| 123 | #undef ENDIAN_CONVERT
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| 124 | #undef ENDIAN_CONVERSION
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| 125 | #define ENDIAN_CONVERSION swap
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| 126 | #define ENDIAN_CONVERT(v) bswap32 (v)
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| 127 | #include "mixeng_template.h"
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| 128 | #undef ENDIAN_CONVERT
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| 129 | #undef ENDIAN_CONVERSION
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| 130 | #undef SIGNED
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| 131 | #undef IN_MAX
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| 132 | #undef IN_MIN
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| 133 | #undef IN_T
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| 134 | #undef SHIFT
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| 135 |
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| 136 | /* Unsigned 32 bit */
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| 137 | #define IN_T uint32_t
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| 138 | #define IN_MIN 0
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| 139 | #define IN_MAX UINT32_MAX
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| 140 | #define SHIFT 32
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| 141 | #define ENDIAN_CONVERSION natural
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| 142 | #define ENDIAN_CONVERT(v) (v)
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| 143 | #include "mixeng_template.h"
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| 144 | #undef ENDIAN_CONVERT
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| 145 | #undef ENDIAN_CONVERSION
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| 146 | #define ENDIAN_CONVERSION swap
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| 147 | #define ENDIAN_CONVERT(v) bswap32 (v)
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| 148 | #include "mixeng_template.h"
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| 149 | #undef ENDIAN_CONVERT
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| 150 | #undef ENDIAN_CONVERSION
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| 151 | #undef IN_MAX
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| 152 | #undef IN_MIN
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| 153 | #undef IN_T
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| 154 | #undef SHIFT
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| 155 |
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| 156 | t_sample *mixeng_conv[2][2][2][3] = {
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| 157 | {
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| 158 | {
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| 159 | {
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| 160 | conv_natural_uint8_t_to_mono,
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| 161 | conv_natural_uint16_t_to_mono,
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| 162 | conv_natural_uint32_t_to_mono
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| 163 | },
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| 164 | {
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| 165 | conv_natural_uint8_t_to_mono,
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| 166 | conv_swap_uint16_t_to_mono,
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| 167 | conv_swap_uint32_t_to_mono,
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| 168 | }
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| 169 | },
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| 170 | {
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| 171 | {
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| 172 | conv_natural_int8_t_to_mono,
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| 173 | conv_natural_int16_t_to_mono,
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| 174 | conv_natural_int32_t_to_mono
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| 175 | },
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| 176 | {
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| 177 | conv_natural_int8_t_to_mono,
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| 178 | conv_swap_int16_t_to_mono,
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| 179 | conv_swap_int32_t_to_mono
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| 180 | }
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| 181 | }
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| 182 | },
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| 183 | {
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| 184 | {
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| 185 | {
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| 186 | conv_natural_uint8_t_to_stereo,
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| 187 | conv_natural_uint16_t_to_stereo,
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| 188 | conv_natural_uint32_t_to_stereo
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| 189 | },
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| 190 | {
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| 191 | conv_natural_uint8_t_to_stereo,
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| 192 | conv_swap_uint16_t_to_stereo,
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| 193 | conv_swap_uint32_t_to_stereo
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| 194 | }
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| 195 | },
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| 196 | {
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| 197 | {
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| 198 | conv_natural_int8_t_to_stereo,
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| 199 | conv_natural_int16_t_to_stereo,
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| 200 | conv_natural_int32_t_to_stereo
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| 201 | },
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| 202 | {
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| 203 | conv_natural_int8_t_to_stereo,
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| 204 | conv_swap_int16_t_to_stereo,
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| 205 | conv_swap_int32_t_to_stereo,
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| 206 | }
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| 207 | }
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| 208 | }
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| 209 | };
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| 210 |
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| 211 | f_sample *mixeng_clip[2][2][2][3] = {
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| 212 | {
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| 213 | {
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| 214 | {
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| 215 | clip_natural_uint8_t_from_mono,
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| 216 | clip_natural_uint16_t_from_mono,
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| 217 | clip_natural_uint32_t_from_mono
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| 218 | },
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| 219 | {
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| 220 | clip_natural_uint8_t_from_mono,
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| 221 | clip_swap_uint16_t_from_mono,
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| 222 | clip_swap_uint32_t_from_mono
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| 223 | }
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| 224 | },
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| 225 | {
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| 226 | {
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| 227 | clip_natural_int8_t_from_mono,
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| 228 | clip_natural_int16_t_from_mono,
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| 229 | clip_natural_int32_t_from_mono
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| 230 | },
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| 231 | {
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| 232 | clip_natural_int8_t_from_mono,
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| 233 | clip_swap_int16_t_from_mono,
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| 234 | clip_swap_int32_t_from_mono
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| 235 | }
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| 236 | }
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| 237 | },
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| 238 | {
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| 239 | {
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| 240 | {
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| 241 | clip_natural_uint8_t_from_stereo,
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| 242 | clip_natural_uint16_t_from_stereo,
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| 243 | clip_natural_uint32_t_from_stereo
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| 244 | },
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| 245 | {
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| 246 | clip_natural_uint8_t_from_stereo,
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| 247 | clip_swap_uint16_t_from_stereo,
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| 248 | clip_swap_uint32_t_from_stereo
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| 249 | }
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| 250 | },
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| 251 | {
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| 252 | {
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| 253 | clip_natural_int8_t_from_stereo,
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| 254 | clip_natural_int16_t_from_stereo,
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| 255 | clip_natural_int32_t_from_stereo
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| 256 | },
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| 257 | {
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| 258 | clip_natural_int8_t_from_stereo,
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| 259 | clip_swap_int16_t_from_stereo,
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| 260 | clip_swap_int32_t_from_stereo
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| 261 | }
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| 262 | }
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| 263 | }
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| 264 | };
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| 265 |
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| 266 | /*
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| 267 | * August 21, 1998
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| 268 | * Copyright 1998 Fabrice Bellard.
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| 269 | *
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| 270 | * [Rewrote completely the code of Lance Norskog And Sundry
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| 271 | * Contributors with a more efficient algorithm.]
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| 272 | *
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| 273 | * This source code is freely redistributable and may be used for
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| 274 | * any purpose. This copyright notice must be maintained.
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| 275 | * Lance Norskog And Sundry Contributors are not responsible for
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| 276 | * the consequences of using this software.
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| 277 | */
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| 278 |
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| 279 | /*
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| 280 | * Sound Tools rate change effect file.
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| 281 | */
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| 282 | /*
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| 283 | * Linear Interpolation.
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| 284 | *
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| 285 | * The use of fractional increment allows us to use no buffer. It
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| 286 | * avoid the problems at the end of the buffer we had with the old
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| 287 | * method which stored a possibly big buffer of size
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| 288 | * lcm(in_rate,out_rate).
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| 289 | *
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| 290 | * Limited to 16 bit samples and sampling frequency <= 65535 Hz. If
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| 291 | * the input & output frequencies are equal, a delay of one sample is
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| 292 | * introduced. Limited to processing 32-bit count worth of samples.
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| 293 | *
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| 294 | * 1 << FRAC_BITS evaluating to zero in several places. Changed with
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| 295 | * an (unsigned long) cast to make it safe. MarkMLl 2/1/99
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| 296 | */
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| 297 |
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| 298 | /* Private data */
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| 299 | struct rate {
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| 300 | uint64_t opos;
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| 301 | uint64_t opos_inc;
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| 302 | uint32_t ipos; /* position in the input stream (integer) */
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| 303 | st_sample_t ilast; /* last sample in the input stream */
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| 304 | };
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| 305 |
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| 306 | /*
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| 307 | * Prepare processing.
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| 308 | */
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| 309 | void *st_rate_start (int inrate, int outrate)
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| 310 | {
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| 311 | struct rate *rate = audio_calloc (AUDIO_FUNC, 1, sizeof (*rate));
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| 312 |
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| 313 | if (!rate) {
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| 314 | dolog ("Could not allocate resampler (%" FMTZ "u bytes)\n",
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| 315 | sizeof (*rate));
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| 316 | return NULL;
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| 317 | }
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| 318 |
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| 319 | rate->opos = 0;
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| 320 |
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| 321 | /* increment */
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| 322 | rate->opos_inc = ((uint64_t) inrate << 32) / outrate;
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| 323 |
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| 324 | rate->ipos = 0;
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| 325 | rate->ilast.l = 0;
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| 326 | rate->ilast.r = 0;
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| 327 | return rate;
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| 328 | }
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| 329 |
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| 330 | #define NAME st_rate_flow_mix
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| 331 | #define OP(a, b) a += b
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| 332 | #include "rate_template.h"
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| 333 |
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| 334 | #define NAME st_rate_flow
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| 335 | #define OP(a, b) a = b
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| 336 | #include "rate_template.h"
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| 337 |
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| 338 | void st_rate_stop (void *opaque)
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| 339 | {
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| 340 | qemu_free (opaque);
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| 341 | }
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| 342 |
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| 343 | void mixeng_clear (st_sample_t *buf, int len)
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| 344 | {
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| 345 | memset (buf, 0, len * sizeof (st_sample_t));
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| 346 | }
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| 347 |
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| 348 | void mixeng_sniff_and_clear (HWVoiceOut *hw, st_sample_t *src, int len)
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| 349 | {
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| 350 | sniffer_run_out (hw, src, len);
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| 351 | mixeng_clear (src, len);
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| 352 | }
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