1 | /* $Id: AudioMixBuffer.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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2 | /** @file
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3 | * Audio mixing buffer for converting reading/writing audio data.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2014-2023 Oracle and/or its affiliates.
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8 | *
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9 | * This file is part of VirtualBox base platform packages, as
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10 | * available from https://www.virtualbox.org.
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11 | *
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12 | * This program is free software; you can redistribute it and/or
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13 | * modify it under the terms of the GNU General Public License
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14 | * as published by the Free Software Foundation, in version 3 of the
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15 | * License.
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16 | *
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17 | * This program is distributed in the hope that it will be useful, but
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18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 | * General Public License for more details.
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21 | *
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22 | * You should have received a copy of the GNU General Public License
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23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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24 | *
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25 | * SPDX-License-Identifier: GPL-3.0-only
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26 | */
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27 |
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28 | /** @page pg_audio_mixing_buffers Audio Mixer Buffer
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29 | *
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30 | * @section sec_audio_mixing_buffers_volume Soft Volume Control
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31 | *
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32 | * The external code supplies an 8-bit volume (attenuation) value in the
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33 | * 0 .. 255 range. This represents 0 to -96dB attenuation where an input
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34 | * value of 0 corresponds to -96dB and 255 corresponds to 0dB (unchanged).
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35 | *
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36 | * Each step thus corresponds to 96 / 256 or 0.375dB. Every 6dB (16 steps)
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37 | * represents doubling the sample value.
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38 | *
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39 | * For internal use, the volume control needs to be converted to a 16-bit
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40 | * (sort of) exponential value between 1 and 65536. This is used with fixed
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41 | * point arithmetic such that 65536 means 1.0 and 1 means 1/65536.
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42 | *
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43 | * For actual volume calculation, 33.31 fixed point is used. Maximum (or
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44 | * unattenuated) volume is represented as 0x40000000; conveniently, this
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45 | * value fits into a uint32_t.
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46 | *
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47 | * To enable fast processing, the maximum volume must be a power of two
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48 | * and must not have a sign when converted to int32_t. While 0x80000000
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49 | * violates these constraints, 0x40000000 does not.
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50 | */
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51 |
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52 |
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53 | /*********************************************************************************************************************************
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54 | * Header Files *
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55 | *********************************************************************************************************************************/
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56 | #define LOG_GROUP LOG_GROUP_AUDIO_MIXER_BUFFER
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57 | #if defined(VBOX_AUDIO_MIX_BUFFER_TESTCASE) && !defined(RT_STRICT)
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58 | # define RT_STRICT /* Run the testcase with assertions because the main functions doesn't return on invalid input. */
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59 | #endif
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60 | #include <VBox/log.h>
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61 |
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62 | #if 0
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63 | /*
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64 | * AUDIOMIXBUF_DEBUG_DUMP_PCM_DATA enables dumping the raw PCM data
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65 | * to a file on the host. Be sure to adjust AUDIOMIXBUF_DEBUG_DUMP_PCM_DATA_PATH
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66 | * to your needs before using this!
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67 | */
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68 | # define AUDIOMIXBUF_DEBUG_DUMP_PCM_DATA
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69 | # ifdef RT_OS_WINDOWS
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70 | # define AUDIOMIXBUF_DEBUG_DUMP_PCM_DATA_PATH "c:\\temp\\"
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71 | # else
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72 | # define AUDIOMIXBUF_DEBUG_DUMP_PCM_DATA_PATH "/tmp/"
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73 | # endif
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74 | /* Warning: Enabling this will generate *huge* logs! */
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75 | //# define AUDIOMIXBUF_DEBUG_MACROS
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76 | #endif
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77 |
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78 | #include <iprt/asm-math.h>
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79 | #include <iprt/assert.h>
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80 | #ifdef AUDIOMIXBUF_DEBUG_DUMP_PCM_DATA
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81 | # include <iprt/file.h>
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82 | #endif
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83 | #include <iprt/mem.h>
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84 | #include <iprt/string.h> /* For RT_BZERO. */
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85 |
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86 | #ifdef VBOX_AUDIO_TESTCASE
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87 | # define LOG_ENABLED
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88 | # include <iprt/stream.h>
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89 | #endif
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90 | #include <iprt/errcore.h>
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91 | #include <VBox/vmm/pdmaudioinline.h>
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92 |
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93 | #include "AudioMixBuffer.h"
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94 |
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95 |
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96 | /*********************************************************************************************************************************
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97 | * Defined Constants And Macros *
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98 | *********************************************************************************************************************************/
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99 | #ifndef VBOX_AUDIO_TESTCASE
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100 | # ifdef DEBUG
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101 | # define AUDMIXBUF_LOG(x) LogFlowFunc(x)
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102 | # define AUDMIXBUF_LOG_ENABLED
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103 | # else
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104 | # define AUDMIXBUF_LOG(x) do {} while (0)
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105 | # endif
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106 | #else /* VBOX_AUDIO_TESTCASE */
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107 | # define AUDMIXBUF_LOG(x) RTPrintf x
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108 | # define AUDMIXBUF_LOG_ENABLED
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109 | #endif
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110 |
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111 |
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112 | /** Bit shift for fixed point conversion.
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113 | * @sa @ref sec_audio_mixing_buffers_volume */
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114 | #define AUDIOMIXBUF_VOL_SHIFT 30
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115 |
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116 | /** Internal representation of 0dB volume (1.0 in fixed point).
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117 | * @sa @ref sec_audio_mixing_buffers_volume */
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118 | #define AUDIOMIXBUF_VOL_0DB (1 << AUDIOMIXBUF_VOL_SHIFT)
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119 | AssertCompile(AUDIOMIXBUF_VOL_0DB <= 0x40000000); /* Must always hold. */
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120 | AssertCompile(AUDIOMIXBUF_VOL_0DB == 0x40000000); /* For now -- when only attenuation is used. */
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121 |
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122 |
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123 | /*********************************************************************************************************************************
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124 | * Global Variables *
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125 | *********************************************************************************************************************************/
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126 | /** Logarithmic/exponential volume conversion table.
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127 | * @sa @ref sec_audio_mixing_buffers_volume
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128 | */
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129 | static uint32_t const s_aVolumeConv[256] =
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130 | {
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131 | 1, 1, 1, 1, 1, 1, 1, 1, /* 7 */
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132 | 1, 2, 2, 2, 2, 2, 2, 2, /* 15 */
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133 | 2, 2, 2, 2, 2, 3, 3, 3, /* 23 */
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134 | 3, 3, 3, 3, 4, 4, 4, 4, /* 31 */
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135 | 4, 4, 5, 5, 5, 5, 5, 6, /* 39 */
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136 | 6, 6, 6, 7, 7, 7, 8, 8, /* 47 */
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137 | 8, 9, 9, 10, 10, 10, 11, 11, /* 55 */
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138 | 12, 12, 13, 13, 14, 15, 15, 16, /* 63 */
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139 | 17, 17, 18, 19, 20, 21, 22, 23, /* 71 */
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140 | 24, 25, 26, 27, 28, 29, 31, 32, /* 79 */
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141 | 33, 35, 36, 38, 40, 41, 43, 45, /* 87 */
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142 | 47, 49, 52, 54, 56, 59, 61, 64, /* 95 */
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143 | 67, 70, 73, 76, 79, 83, 87, 91, /* 103 */
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144 | 95, 99, 103, 108, 112, 117, 123, 128, /* 111 */
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145 | 134, 140, 146, 152, 159, 166, 173, 181, /* 119 */
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146 | 189, 197, 206, 215, 225, 235, 245, 256, /* 127 */
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147 | 267, 279, 292, 304, 318, 332, 347, 362, /* 135 */
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148 | 378, 395, 412, 431, 450, 470, 490, 512, /* 143 */
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149 | 535, 558, 583, 609, 636, 664, 693, 724, /* 151 */
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150 | 756, 790, 825, 861, 899, 939, 981, 1024, /* 159 */
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151 | 1069, 1117, 1166, 1218, 1272, 1328, 1387, 1448, /* 167 */
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152 | 1512, 1579, 1649, 1722, 1798, 1878, 1961, 2048, /* 175 */
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153 | 2139, 2233, 2332, 2435, 2543, 2656, 2774, 2896, /* 183 */
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154 | 3025, 3158, 3298, 3444, 3597, 3756, 3922, 4096, /* 191 */
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155 | 4277, 4467, 4664, 4871, 5087, 5312, 5547, 5793, /* 199 */
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156 | 6049, 6317, 6597, 6889, 7194, 7512, 7845, 8192, /* 207 */
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157 | 8555, 8933, 9329, 9742, 10173, 10624, 11094, 11585, /* 215 */
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158 | 12098, 12634, 13193, 13777, 14387, 15024, 15689, 16384, /* 223 */
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159 | 17109, 17867, 18658, 19484, 20347, 21247, 22188, 23170, /* 231 */
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160 | 24196, 25268, 26386, 27554, 28774, 30048, 31379, 32768, /* 239 */
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161 | 34219, 35734, 37316, 38968, 40693, 42495, 44376, 46341, /* 247 */
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162 | 48393, 50535, 52773, 55109, 57549, 60097, 62757, 65536, /* 255 */
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163 | };
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164 |
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165 |
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166 |
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167 | #ifdef VBOX_STRICT
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168 | # ifdef UNUSED
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169 |
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170 | /**
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171 | * Prints a single mixing buffer.
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172 | * Internal helper function for debugging. Do not use directly.
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173 | *
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174 | * @returns VBox status code.
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175 | * @param pMixBuf Mixing buffer to print.
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176 | * @param pszFunc Function name to log this for.
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177 | * @param uIdtLvl Indention level to use.
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178 | */
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179 | static void audioMixBufDbgPrintSingle(PAUDIOMIXBUF pMixBuf, const char *pszFunc, uint16_t uIdtLvl)
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180 | {
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181 | Log(("%s: %*s %s: offRead=%RU32, offWrite=%RU32 -> %RU32/%RU32\n",
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182 | pszFunc, uIdtLvl * 4, "",
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183 | pMixBuf->pszName, pMixBuf->offRead, pMixBuf->offWrite, pMixBuf->cUsed, pMixBuf->cFrames));
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184 | }
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185 |
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186 | static void audioMixBufDbgPrintInternal(PAUDIOMIXBUF pMixBuf, const char *pszFunc)
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187 | {
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188 | audioMixBufDbgPrintSingle(pMixBuf, pszFunc, 0 /* iIdtLevel */);
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189 | }
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190 |
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191 | /**
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192 | * Validates a single mixing buffer.
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193 | *
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194 | * @return @true if the buffer state is valid or @false if not.
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195 | * @param pMixBuf Mixing buffer to validate.
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196 | */
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197 | static bool audioMixBufDbgValidate(PAUDIOMIXBUF pMixBuf)
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198 | {
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199 | //const uint32_t offReadEnd = (pMixBuf->offRead + pMixBuf->cUsed) % pMixBuf->cFrames;
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200 | //const uint32_t offWriteEnd = (pMixBuf->offWrite + (pMixBuf->cFrames - pMixBuf->cUsed)) % pMixBuf->cFrames;
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201 |
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202 | bool fValid = true;
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203 |
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204 | AssertStmt(pMixBuf->offRead <= pMixBuf->cFrames, fValid = false);
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205 | AssertStmt(pMixBuf->offWrite <= pMixBuf->cFrames, fValid = false);
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206 | AssertStmt(pMixBuf->cUsed <= pMixBuf->cFrames, fValid = false);
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207 |
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208 | if (pMixBuf->offWrite > pMixBuf->offRead)
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209 | {
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210 | if (pMixBuf->offWrite - pMixBuf->offRead != pMixBuf->cUsed)
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211 | fValid = false;
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212 | }
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213 | else if (pMixBuf->offWrite < pMixBuf->offRead)
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214 | {
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215 | if (pMixBuf->offWrite + pMixBuf->cFrames - pMixBuf->offRead != pMixBuf->cUsed)
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216 | fValid = false;
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217 | }
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218 |
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219 | if (!fValid)
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220 | {
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221 | audioMixBufDbgPrintInternal(pMixBuf, __FUNCTION__);
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222 | AssertFailed();
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223 | }
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224 |
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225 | return fValid;
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226 | }
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227 |
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228 | # endif /* UNUSED */
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229 | #endif /* VBOX_STRICT */
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230 |
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231 |
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232 | /**
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233 | * Merges @a i32Src into the value stored at @a pi32Dst.
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234 | *
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235 | * @param pi32Dst The value to merge @a i32Src into.
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236 | * @param i32Src The new value to add.
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237 | */
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238 | DECL_FORCE_INLINE(void) audioMixBufBlendSample(int32_t *pi32Dst, int32_t i32Src)
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239 | {
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240 | if (i32Src)
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241 | {
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242 | int64_t const i32Dst = *pi32Dst;
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243 | if (!i32Dst)
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244 | *pi32Dst = i32Src;
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245 | else
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246 | *pi32Dst = (int32_t)(((int64_t)i32Dst + i32Src) / 2);
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247 | }
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248 | }
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249 |
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250 |
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251 | /**
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252 | * Variant of audioMixBufBlendSample that returns the result rather than storing it.
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253 | *
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254 | * This is used for stereo -> mono.
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255 | */
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256 | DECL_FORCE_INLINE(int32_t) audioMixBufBlendSampleRet(int32_t i32Sample1, int32_t i32Sample2)
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257 | {
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258 | if (!i32Sample1)
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259 | return i32Sample2;
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260 | if (!i32Sample2)
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261 | return i32Sample1;
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262 | return (int32_t)(((int64_t)i32Sample1 + i32Sample2) / 2);
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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 | * Blends (merges) the source buffer into the destination buffer.
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268 | *
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269 | * We're taking a very simple approach here, working sample by sample:
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270 | * - if one is silent, use the other one.
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271 | * - otherwise sum and divide by two.
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272 | *
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273 | * @param pi32Dst The destination stream buffer (input and output).
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274 | * @param pi32Src The source stream buffer.
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275 | * @param cFrames Number of frames to process.
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276 | * @param cChannels Number of channels.
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277 | */
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278 | static void audioMixBufBlendBuffer(int32_t *pi32Dst, int32_t const *pi32Src, uint32_t cFrames, uint8_t cChannels)
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279 | {
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280 | switch (cChannels)
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281 | {
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282 | case 2:
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283 | while (cFrames-- > 0)
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284 | {
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285 | audioMixBufBlendSample(&pi32Dst[0], pi32Src[0]);
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286 | audioMixBufBlendSample(&pi32Dst[1], pi32Src[1]);
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287 | pi32Dst += 2;
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288 | pi32Src += 2;
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289 | }
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290 | break;
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291 |
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292 | default:
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293 | cFrames *= cChannels;
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294 | RT_FALL_THROUGH();
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295 | case 1:
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296 | while (cFrames-- > 0)
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297 | {
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298 | audioMixBufBlendSample(pi32Dst, pi32Src[0]);
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299 | pi32Dst++;
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300 | pi32Src++;
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301 | }
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302 | break;
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303 | }
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304 | }
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305 |
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306 |
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307 | #ifdef AUDIOMIXBUF_DEBUG_MACROS
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308 | # define AUDMIXBUF_MACRO_LOG(x) AUDMIXBUF_LOG(x)
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309 | #elif defined(VBOX_AUDIO_TESTCASE_VERBOSE) /* Warning: VBOX_AUDIO_TESTCASE_VERBOSE will generate huge logs! */
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310 | # define AUDMIXBUF_MACRO_LOG(x) RTPrintf x
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311 | #else
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312 | # define AUDMIXBUF_MACRO_LOG(x) do {} while (0)
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313 | #endif
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314 |
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315 | /*
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316 | * Instantiate format conversion (in and out of the mixer buffer.)
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317 | */
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318 | /** @todo Currently does not handle any endianness conversion yet! */
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319 |
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320 | /* audioMixBufConvXXXS8: 8-bit, signed. */
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321 | #define a_Name S8
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322 | #define a_Type int8_t
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323 | #define a_Min INT8_MIN
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324 | #define a_Max INT8_MAX
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325 | #define a_fSigned 1
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326 | #define a_cShift 8
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327 | #include "AudioMixBuffer-Convert.cpp.h"
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328 |
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329 | /* audioMixBufConvXXXU8: 8-bit, unsigned. */
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330 | #define a_Name U8
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331 | #define a_Type uint8_t
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332 | #define a_Min 0
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333 | #define a_Max UINT8_MAX
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334 | #define a_fSigned 0
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335 | #define a_cShift 8
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336 | #include "AudioMixBuffer-Convert.cpp.h"
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337 |
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338 | /* audioMixBufConvXXXS16: 16-bit, signed. */
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339 | #define a_Name S16
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340 | #define a_Type int16_t
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341 | #define a_Min INT16_MIN
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342 | #define a_Max INT16_MAX
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343 | #define a_fSigned 1
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344 | #define a_cShift 16
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345 | #include "AudioMixBuffer-Convert.cpp.h"
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346 |
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347 | /* audioMixBufConvXXXU16: 16-bit, unsigned. */
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348 | #define a_Name U16
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349 | #define a_Type uint16_t
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350 | #define a_Min 0
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351 | #define a_Max UINT16_MAX
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352 | #define a_fSigned 0
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353 | #define a_cShift 16
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354 | #include "AudioMixBuffer-Convert.cpp.h"
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355 |
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356 | /* audioMixBufConvXXXS32: 32-bit, signed. */
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357 | #define a_Name S32
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358 | #define a_Type int32_t
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359 | #define a_Min INT32_MIN
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360 | #define a_Max INT32_MAX
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361 | #define a_fSigned 1
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362 | #define a_cShift 32
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363 | #include "AudioMixBuffer-Convert.cpp.h"
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364 |
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365 | /* audioMixBufConvXXXU32: 32-bit, unsigned. */
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366 | #define a_Name U32
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367 | #define a_Type uint32_t
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368 | #define a_Min 0
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369 | #define a_Max UINT32_MAX
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370 | #define a_fSigned 0
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371 | #define a_cShift 32
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372 | #include "AudioMixBuffer-Convert.cpp.h"
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373 |
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374 | /* audioMixBufConvXXXRaw: 32-bit stored as 64-bit, signed. */
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375 | #define a_Name Raw
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376 | #define a_Type int64_t
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377 | #define a_Min INT64_MIN
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378 | #define a_Max INT64_MAX
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379 | #define a_fSigned 1
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380 | #define a_cShift 32 /* Yes, 32! */
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381 | #include "AudioMixBuffer-Convert.cpp.h"
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382 |
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383 | #undef AUDMIXBUF_CONVERT
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384 | #undef AUDMIXBUF_MACRO_LOG
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385 |
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386 |
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387 | /*
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388 | * Resampling core.
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389 | */
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390 | /** @todo Separate down- and up-sampling, borrow filter code from RDP. */
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391 | #define COPY_LAST_FRAME_1CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
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392 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
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393 | } while (0)
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394 | #define COPY_LAST_FRAME_2CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
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395 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
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396 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
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397 | } while (0)
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398 | #define COPY_LAST_FRAME_3CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
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399 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
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400 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
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401 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
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402 | } while (0)
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403 | #define COPY_LAST_FRAME_4CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
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404 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
405 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
406 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
407 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
408 | } while (0)
|
---|
409 | #define COPY_LAST_FRAME_5CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
|
---|
410 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
411 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
412 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
413 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
414 | (a_pi32Dst)[4] = (a_pi32Src)[4]; \
|
---|
415 | } while (0)
|
---|
416 | #define COPY_LAST_FRAME_6CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
|
---|
417 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
418 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
419 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
420 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
421 | (a_pi32Dst)[4] = (a_pi32Src)[4]; \
|
---|
422 | (a_pi32Dst)[5] = (a_pi32Src)[5]; \
|
---|
423 | } while (0)
|
---|
424 | #define COPY_LAST_FRAME_7CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
|
---|
425 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
426 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
427 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
428 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
429 | (a_pi32Dst)[4] = (a_pi32Src)[4]; \
|
---|
430 | (a_pi32Dst)[5] = (a_pi32Src)[5]; \
|
---|
431 | (a_pi32Dst)[6] = (a_pi32Src)[6]; \
|
---|
432 | } while (0)
|
---|
433 | #define COPY_LAST_FRAME_8CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
|
---|
434 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
435 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
436 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
437 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
438 | (a_pi32Dst)[4] = (a_pi32Src)[4]; \
|
---|
439 | (a_pi32Dst)[5] = (a_pi32Src)[5]; \
|
---|
440 | (a_pi32Dst)[6] = (a_pi32Src)[6]; \
|
---|
441 | (a_pi32Dst)[7] = (a_pi32Src)[7]; \
|
---|
442 | } while (0)
|
---|
443 | #define COPY_LAST_FRAME_9CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
|
---|
444 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
445 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
446 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
447 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
448 | (a_pi32Dst)[4] = (a_pi32Src)[4]; \
|
---|
449 | (a_pi32Dst)[5] = (a_pi32Src)[5]; \
|
---|
450 | (a_pi32Dst)[6] = (a_pi32Src)[6]; \
|
---|
451 | (a_pi32Dst)[7] = (a_pi32Src)[7]; \
|
---|
452 | (a_pi32Dst)[8] = (a_pi32Src)[8]; \
|
---|
453 | } while (0)
|
---|
454 | #define COPY_LAST_FRAME_10CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
|
---|
455 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
456 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
457 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
458 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
459 | (a_pi32Dst)[4] = (a_pi32Src)[4]; \
|
---|
460 | (a_pi32Dst)[5] = (a_pi32Src)[5]; \
|
---|
461 | (a_pi32Dst)[6] = (a_pi32Src)[6]; \
|
---|
462 | (a_pi32Dst)[7] = (a_pi32Src)[7]; \
|
---|
463 | (a_pi32Dst)[8] = (a_pi32Src)[8]; \
|
---|
464 | (a_pi32Dst)[9] = (a_pi32Src)[9]; \
|
---|
465 | } while (0)
|
---|
466 | #define COPY_LAST_FRAME_11CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
|
---|
467 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
468 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
469 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
470 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
471 | (a_pi32Dst)[4] = (a_pi32Src)[4]; \
|
---|
472 | (a_pi32Dst)[5] = (a_pi32Src)[5]; \
|
---|
473 | (a_pi32Dst)[6] = (a_pi32Src)[6]; \
|
---|
474 | (a_pi32Dst)[7] = (a_pi32Src)[7]; \
|
---|
475 | (a_pi32Dst)[8] = (a_pi32Src)[8]; \
|
---|
476 | (a_pi32Dst)[9] = (a_pi32Src)[9]; \
|
---|
477 | (a_pi32Dst)[10] = (a_pi32Src)[10]; \
|
---|
478 | } while (0)
|
---|
479 | #define COPY_LAST_FRAME_12CH(a_pi32Dst, a_pi32Src, a_cChannels) do { \
|
---|
480 | (a_pi32Dst)[0] = (a_pi32Src)[0]; \
|
---|
481 | (a_pi32Dst)[1] = (a_pi32Src)[1]; \
|
---|
482 | (a_pi32Dst)[2] = (a_pi32Src)[2]; \
|
---|
483 | (a_pi32Dst)[3] = (a_pi32Src)[3]; \
|
---|
484 | (a_pi32Dst)[4] = (a_pi32Src)[4]; \
|
---|
485 | (a_pi32Dst)[5] = (a_pi32Src)[5]; \
|
---|
486 | (a_pi32Dst)[6] = (a_pi32Src)[6]; \
|
---|
487 | (a_pi32Dst)[7] = (a_pi32Src)[7]; \
|
---|
488 | (a_pi32Dst)[8] = (a_pi32Src)[8]; \
|
---|
489 | (a_pi32Dst)[9] = (a_pi32Src)[9]; \
|
---|
490 | (a_pi32Dst)[10] = (a_pi32Src)[10]; \
|
---|
491 | (a_pi32Dst)[11] = (a_pi32Src)[11]; \
|
---|
492 | } while (0)
|
---|
493 |
|
---|
494 | #define INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_iCh) \
|
---|
495 | (a_pi32Dst)[a_iCh] = ((a_pi32Last)[a_iCh] * a_i64FactorLast + (a_pi32Src)[a_iCh] * a_i64FactorCur) >> 32
|
---|
496 | #define INTERPOLATE_1CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
497 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
498 | } while (0)
|
---|
499 | #define INTERPOLATE_2CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
500 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
501 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
502 | } while (0)
|
---|
503 | #define INTERPOLATE_3CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
504 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
505 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
506 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
507 | } while (0)
|
---|
508 | #define INTERPOLATE_4CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
509 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
510 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
511 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
512 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
513 | } while (0)
|
---|
514 | #define INTERPOLATE_5CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
515 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
516 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
517 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
518 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
519 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 4); \
|
---|
520 | } while (0)
|
---|
521 | #define INTERPOLATE_6CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
522 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
523 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
524 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
525 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
526 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 4); \
|
---|
527 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 5); \
|
---|
528 | } while (0)
|
---|
529 | #define INTERPOLATE_7CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
530 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
531 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
532 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
533 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
534 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 4); \
|
---|
535 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 5); \
|
---|
536 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 6); \
|
---|
537 | } while (0)
|
---|
538 | #define INTERPOLATE_8CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
539 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
540 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
541 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
542 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
543 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 4); \
|
---|
544 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 5); \
|
---|
545 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 6); \
|
---|
546 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 7); \
|
---|
547 | } while (0)
|
---|
548 | #define INTERPOLATE_9CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
549 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
550 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
551 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
552 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
553 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 4); \
|
---|
554 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 5); \
|
---|
555 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 6); \
|
---|
556 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 7); \
|
---|
557 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 8); \
|
---|
558 | } while (0)
|
---|
559 | #define INTERPOLATE_10CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
560 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
561 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
562 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
563 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
564 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 4); \
|
---|
565 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 5); \
|
---|
566 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 6); \
|
---|
567 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 7); \
|
---|
568 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 8); \
|
---|
569 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 9); \
|
---|
570 | } while (0)
|
---|
571 | #define INTERPOLATE_11CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
572 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
573 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
574 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
575 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
576 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 4); \
|
---|
577 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 5); \
|
---|
578 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 6); \
|
---|
579 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 7); \
|
---|
580 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 8); \
|
---|
581 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 9); \
|
---|
582 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 10); \
|
---|
583 | } while (0)
|
---|
584 | #define INTERPOLATE_12CH(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, a_cChannels) do { \
|
---|
585 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 0); \
|
---|
586 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 1); \
|
---|
587 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 2); \
|
---|
588 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 3); \
|
---|
589 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 4); \
|
---|
590 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 5); \
|
---|
591 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 6); \
|
---|
592 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 7); \
|
---|
593 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 8); \
|
---|
594 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 9); \
|
---|
595 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 10); \
|
---|
596 | INTERPOLATE_ONE(a_pi32Dst, a_pi32Src, a_pi32Last, a_i64FactorCur, a_i64FactorLast, 11); \
|
---|
597 | } while (0)
|
---|
598 |
|
---|
599 | #define AUDIOMIXBUF_RESAMPLE(a_cChannels, a_Suffix) \
|
---|
600 | /** @returns Number of destination frames written. */ \
|
---|
601 | static DECLCALLBACK(uint32_t) \
|
---|
602 | audioMixBufResample##a_cChannels##Ch##a_Suffix(int32_t *pi32Dst, uint32_t cDstFrames, \
|
---|
603 | int32_t const *pi32Src, uint32_t cSrcFrames, uint32_t *pcSrcFramesRead, \
|
---|
604 | PAUDIOSTREAMRATE pRate) \
|
---|
605 | { \
|
---|
606 | Log5(("Src: %RU32 L %RU32; Dst: %RU32 L%RU32; uDstInc=%#RX64\n", \
|
---|
607 | pRate->offSrc, cSrcFrames, RT_HI_U32(pRate->offDst), cDstFrames, pRate->uDstInc)); \
|
---|
608 | int32_t * const pi32DstStart = pi32Dst; \
|
---|
609 | int32_t const * const pi32SrcStart = pi32Src; \
|
---|
610 | \
|
---|
611 | int32_t ai32LastFrame[a_cChannels]; \
|
---|
612 | COPY_LAST_FRAME_##a_cChannels##CH(ai32LastFrame, pRate->SrcLast.ai32Samples, a_cChannels); \
|
---|
613 | \
|
---|
614 | while (cDstFrames > 0 && cSrcFrames > 0) \
|
---|
615 | { \
|
---|
616 | int32_t const cSrcNeeded = RT_HI_U32(pRate->offDst) - pRate->offSrc + 1; \
|
---|
617 | if (cSrcNeeded > 0) \
|
---|
618 | { \
|
---|
619 | if ((uint32_t)cSrcNeeded + 1 < cSrcFrames) \
|
---|
620 | { \
|
---|
621 | pRate->offSrc += (uint32_t)cSrcNeeded; \
|
---|
622 | cSrcFrames -= (uint32_t)cSrcNeeded; \
|
---|
623 | pi32Src += (uint32_t)cSrcNeeded * a_cChannels; \
|
---|
624 | COPY_LAST_FRAME_##a_cChannels##CH(ai32LastFrame, &pi32Src[-a_cChannels], a_cChannels); \
|
---|
625 | } \
|
---|
626 | else \
|
---|
627 | { \
|
---|
628 | pi32Src += cSrcFrames * a_cChannels; \
|
---|
629 | pRate->offSrc += cSrcFrames; \
|
---|
630 | COPY_LAST_FRAME_##a_cChannels##CH(pRate->SrcLast.ai32Samples, &pi32Src[-a_cChannels], a_cChannels); \
|
---|
631 | *pcSrcFramesRead = (pi32Src - pi32SrcStart) / a_cChannels; \
|
---|
632 | return (pi32Dst - pi32DstStart) / a_cChannels; \
|
---|
633 | } \
|
---|
634 | } \
|
---|
635 | \
|
---|
636 | /* Interpolate. */ \
|
---|
637 | int64_t const offFactorCur = pRate->offDst & UINT32_MAX; \
|
---|
638 | int64_t const offFactorLast = (int64_t)_4G - offFactorCur; \
|
---|
639 | INTERPOLATE_##a_cChannels##CH(pi32Dst, pi32Src, ai32LastFrame, offFactorCur, offFactorLast, a_cChannels); \
|
---|
640 | \
|
---|
641 | /* Advance. */ \
|
---|
642 | pRate->offDst += pRate->uDstInc; \
|
---|
643 | pi32Dst += a_cChannels; \
|
---|
644 | cDstFrames -= 1; \
|
---|
645 | } \
|
---|
646 | \
|
---|
647 | COPY_LAST_FRAME_##a_cChannels##CH(pRate->SrcLast.ai32Samples, ai32LastFrame, a_cChannels); \
|
---|
648 | *pcSrcFramesRead = (pi32Src - pi32SrcStart) / a_cChannels; \
|
---|
649 | return (pi32Dst - pi32DstStart) / a_cChannels; \
|
---|
650 | }
|
---|
651 |
|
---|
652 | AUDIOMIXBUF_RESAMPLE(1,Generic)
|
---|
653 | AUDIOMIXBUF_RESAMPLE(2,Generic)
|
---|
654 | AUDIOMIXBUF_RESAMPLE(3,Generic)
|
---|
655 | AUDIOMIXBUF_RESAMPLE(4,Generic)
|
---|
656 | AUDIOMIXBUF_RESAMPLE(5,Generic)
|
---|
657 | AUDIOMIXBUF_RESAMPLE(6,Generic)
|
---|
658 | AUDIOMIXBUF_RESAMPLE(7,Generic)
|
---|
659 | AUDIOMIXBUF_RESAMPLE(8,Generic)
|
---|
660 | AUDIOMIXBUF_RESAMPLE(9,Generic)
|
---|
661 | AUDIOMIXBUF_RESAMPLE(10,Generic)
|
---|
662 | AUDIOMIXBUF_RESAMPLE(11,Generic)
|
---|
663 | AUDIOMIXBUF_RESAMPLE(12,Generic)
|
---|
664 |
|
---|
665 |
|
---|
666 | /**
|
---|
667 | * Resets the resampling state unconditionally.
|
---|
668 | *
|
---|
669 | * @param pRate The state to reset.
|
---|
670 | */
|
---|
671 | static void audioMixBufRateResetAlways(PAUDIOSTREAMRATE pRate)
|
---|
672 | {
|
---|
673 | pRate->offDst = 0;
|
---|
674 | pRate->offSrc = 0;
|
---|
675 | for (uintptr_t i = 0; i < RT_ELEMENTS(pRate->SrcLast.ai32Samples); i++)
|
---|
676 | pRate->SrcLast.ai32Samples[0] = 0;
|
---|
677 | }
|
---|
678 |
|
---|
679 |
|
---|
680 | /**
|
---|
681 | * Resets the resampling state.
|
---|
682 | *
|
---|
683 | * @param pRate The state to reset.
|
---|
684 | */
|
---|
685 | DECLINLINE(void) audioMixBufRateReset(PAUDIOSTREAMRATE pRate)
|
---|
686 | {
|
---|
687 | if (pRate->offDst == 0)
|
---|
688 | { /* likely */ }
|
---|
689 | else
|
---|
690 | {
|
---|
691 | Assert(!pRate->fNoConversionNeeded);
|
---|
692 | audioMixBufRateResetAlways(pRate);
|
---|
693 | }
|
---|
694 | }
|
---|
695 |
|
---|
696 |
|
---|
697 | /**
|
---|
698 | * Initializes the frame rate converter state.
|
---|
699 | *
|
---|
700 | * @returns VBox status code.
|
---|
701 | * @param pRate The state to initialize.
|
---|
702 | * @param uSrcHz The source frame rate.
|
---|
703 | * @param uDstHz The destination frame rate.
|
---|
704 | * @param cChannels The number of channels in a frame.
|
---|
705 | */
|
---|
706 | DECLINLINE(int) audioMixBufRateInit(PAUDIOSTREAMRATE pRate, uint32_t uSrcHz, uint32_t uDstHz, uint8_t cChannels)
|
---|
707 | {
|
---|
708 | /*
|
---|
709 | * Do we need to set up frequency conversion?
|
---|
710 | *
|
---|
711 | * Some examples to get an idea of what uDstInc holds:
|
---|
712 | * 44100 to 44100 -> (44100<<32) / 44100 = 0x01'00000000 (4294967296)
|
---|
713 | * 22050 to 44100 -> (22050<<32) / 44100 = 0x00'80000000 (2147483648)
|
---|
714 | * 44100 to 22050 -> (44100<<32) / 22050 = 0x02'00000000 (8589934592)
|
---|
715 | * 44100 to 48000 -> (44100<<32) / 48000 = 0x00'EB333333 (3946001203.2)
|
---|
716 | * 48000 to 44100 -> (48000<<32) / 44100 = 0x01'16A3B35F (4674794335.7823129251700680272109)
|
---|
717 | */
|
---|
718 | audioMixBufRateResetAlways(pRate);
|
---|
719 | if (uSrcHz == uDstHz)
|
---|
720 | {
|
---|
721 | pRate->fNoConversionNeeded = true;
|
---|
722 | pRate->uDstInc = RT_BIT_64(32);
|
---|
723 | pRate->pfnResample = NULL;
|
---|
724 | }
|
---|
725 | else
|
---|
726 | {
|
---|
727 | pRate->fNoConversionNeeded = false;
|
---|
728 | pRate->uDstInc = ((uint64_t)uSrcHz << 32) / uDstHz;
|
---|
729 | AssertReturn(uSrcHz != 0, VERR_INVALID_PARAMETER);
|
---|
730 | switch (cChannels)
|
---|
731 | {
|
---|
732 | case 1: pRate->pfnResample = audioMixBufResample1ChGeneric; break;
|
---|
733 | case 2: pRate->pfnResample = audioMixBufResample2ChGeneric; break;
|
---|
734 | case 3: pRate->pfnResample = audioMixBufResample3ChGeneric; break;
|
---|
735 | case 4: pRate->pfnResample = audioMixBufResample4ChGeneric; break;
|
---|
736 | case 5: pRate->pfnResample = audioMixBufResample5ChGeneric; break;
|
---|
737 | case 6: pRate->pfnResample = audioMixBufResample6ChGeneric; break;
|
---|
738 | case 7: pRate->pfnResample = audioMixBufResample7ChGeneric; break;
|
---|
739 | case 8: pRate->pfnResample = audioMixBufResample8ChGeneric; break;
|
---|
740 | case 9: pRate->pfnResample = audioMixBufResample9ChGeneric; break;
|
---|
741 | case 10: pRate->pfnResample = audioMixBufResample10ChGeneric; break;
|
---|
742 | case 11: pRate->pfnResample = audioMixBufResample11ChGeneric; break;
|
---|
743 | case 12: pRate->pfnResample = audioMixBufResample12ChGeneric; break;
|
---|
744 | default:
|
---|
745 | AssertMsgFailedReturn(("resampling %u changes is not implemented yet\n", cChannels), VERR_OUT_OF_RANGE);
|
---|
746 | }
|
---|
747 | }
|
---|
748 | return VINF_SUCCESS;
|
---|
749 | }
|
---|
750 |
|
---|
751 |
|
---|
752 | /**
|
---|
753 | * Initializes a mixing buffer.
|
---|
754 | *
|
---|
755 | * @returns VBox status code.
|
---|
756 | * @param pMixBuf Mixing buffer to initialize.
|
---|
757 | * @param pszName Name of mixing buffer for easier identification. Optional.
|
---|
758 | * @param pProps PCM audio properties to use for the mixing buffer.
|
---|
759 | * @param cFrames Maximum number of audio frames the mixing buffer can hold.
|
---|
760 | */
|
---|
761 | int AudioMixBufInit(PAUDIOMIXBUF pMixBuf, const char *pszName, PCPDMAUDIOPCMPROPS pProps, uint32_t cFrames)
|
---|
762 | {
|
---|
763 | AssertPtrReturn(pMixBuf, VERR_INVALID_POINTER);
|
---|
764 | AssertPtrReturn(pszName, VERR_INVALID_POINTER);
|
---|
765 | AssertPtrReturn(pProps, VERR_INVALID_POINTER);
|
---|
766 | Assert(PDMAudioPropsAreValid(pProps));
|
---|
767 |
|
---|
768 | /*
|
---|
769 | * Initialize all members, setting the volume to max (0dB).
|
---|
770 | */
|
---|
771 | pMixBuf->cFrames = 0;
|
---|
772 | pMixBuf->pi32Samples = NULL;
|
---|
773 | pMixBuf->cChannels = 0;
|
---|
774 | pMixBuf->cbFrame = 0;
|
---|
775 | pMixBuf->offRead = 0;
|
---|
776 | pMixBuf->offWrite = 0;
|
---|
777 | pMixBuf->cUsed = 0;
|
---|
778 | pMixBuf->Props = *pProps;
|
---|
779 | pMixBuf->Volume.fMuted = false;
|
---|
780 | pMixBuf->Volume.fAllMax = true;
|
---|
781 | for (uintptr_t i = 0; i < RT_ELEMENTS(pMixBuf->Volume.auChannels); i++)
|
---|
782 | pMixBuf->Volume.auChannels[i] = AUDIOMIXBUF_VOL_0DB;
|
---|
783 |
|
---|
784 | int rc;
|
---|
785 | uint8_t const cChannels = PDMAudioPropsChannels(pProps);
|
---|
786 | if (cChannels >= 1 && cChannels <= PDMAUDIO_MAX_CHANNELS)
|
---|
787 | {
|
---|
788 | pMixBuf->pszName = RTStrDup(pszName);
|
---|
789 | if (pMixBuf->pszName)
|
---|
790 | {
|
---|
791 | pMixBuf->pi32Samples = (int32_t *)RTMemAllocZ(cFrames * cChannels * sizeof(pMixBuf->pi32Samples[0]));
|
---|
792 | if (pMixBuf->pi32Samples)
|
---|
793 | {
|
---|
794 | pMixBuf->cFrames = cFrames;
|
---|
795 | pMixBuf->cChannels = cChannels;
|
---|
796 | pMixBuf->cbFrame = cChannels * sizeof(pMixBuf->pi32Samples[0]);
|
---|
797 | pMixBuf->uMagic = AUDIOMIXBUF_MAGIC;
|
---|
798 | #ifdef AUDMIXBUF_LOG_ENABLED
|
---|
799 | char szTmp[PDMAUDIOPROPSTOSTRING_MAX];
|
---|
800 | AUDMIXBUF_LOG(("%s: %s - cFrames=%#x (%d)\n",
|
---|
801 | pMixBuf->pszName, PDMAudioPropsToString(pProps, szTmp, sizeof(szTmp)), cFrames, cFrames));
|
---|
802 | #endif
|
---|
803 | return VINF_SUCCESS;
|
---|
804 | }
|
---|
805 | RTStrFree(pMixBuf->pszName);
|
---|
806 | pMixBuf->pszName = NULL;
|
---|
807 | rc = VERR_NO_MEMORY;
|
---|
808 | }
|
---|
809 | else
|
---|
810 | rc = VERR_NO_STR_MEMORY;
|
---|
811 | }
|
---|
812 | else
|
---|
813 | {
|
---|
814 | LogRelMaxFunc(64, ("cChannels=%d pszName=%s\n", cChannels, pszName));
|
---|
815 | rc = VERR_OUT_OF_RANGE;
|
---|
816 | }
|
---|
817 | pMixBuf->uMagic = AUDIOMIXBUF_MAGIC_DEAD;
|
---|
818 | return rc;
|
---|
819 | }
|
---|
820 |
|
---|
821 | /**
|
---|
822 | * Terminates (uninitializes) a mixing buffer.
|
---|
823 | *
|
---|
824 | * @param pMixBuf The mixing buffer. Uninitialized mixer buffers will be
|
---|
825 | * quietly ignored. As will NULL.
|
---|
826 | */
|
---|
827 | void AudioMixBufTerm(PAUDIOMIXBUF pMixBuf)
|
---|
828 | {
|
---|
829 | if (!pMixBuf)
|
---|
830 | return;
|
---|
831 |
|
---|
832 | /* Ignore calls for an uninitialized (zeroed) or already destroyed instance. Happens a lot. */
|
---|
833 | if ( pMixBuf->uMagic == 0
|
---|
834 | || pMixBuf->uMagic == AUDIOMIXBUF_MAGIC_DEAD)
|
---|
835 | {
|
---|
836 | Assert(!pMixBuf->pszName);
|
---|
837 | Assert(!pMixBuf->pi32Samples);
|
---|
838 | Assert(!pMixBuf->cFrames);
|
---|
839 | return;
|
---|
840 | }
|
---|
841 |
|
---|
842 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
843 | pMixBuf->uMagic = ~AUDIOMIXBUF_MAGIC;
|
---|
844 |
|
---|
845 | if (pMixBuf->pszName)
|
---|
846 | {
|
---|
847 | AUDMIXBUF_LOG(("%s\n", pMixBuf->pszName));
|
---|
848 |
|
---|
849 | RTStrFree(pMixBuf->pszName);
|
---|
850 | pMixBuf->pszName = NULL;
|
---|
851 | }
|
---|
852 |
|
---|
853 | if (pMixBuf->pi32Samples)
|
---|
854 | {
|
---|
855 | Assert(pMixBuf->cFrames);
|
---|
856 | RTMemFree(pMixBuf->pi32Samples);
|
---|
857 | pMixBuf->pi32Samples = NULL;
|
---|
858 | }
|
---|
859 |
|
---|
860 | pMixBuf->cFrames = 0;
|
---|
861 | pMixBuf->cChannels = 0;
|
---|
862 | }
|
---|
863 |
|
---|
864 |
|
---|
865 | /**
|
---|
866 | * Drops all the frames in the given mixing buffer
|
---|
867 | *
|
---|
868 | * This will reset the read and write offsets to zero.
|
---|
869 | *
|
---|
870 | * @param pMixBuf The mixing buffer. Uninitialized mixer buffers will be
|
---|
871 | * quietly ignored.
|
---|
872 | */
|
---|
873 | void AudioMixBufDrop(PAUDIOMIXBUF pMixBuf)
|
---|
874 | {
|
---|
875 | AssertPtrReturnVoid(pMixBuf);
|
---|
876 |
|
---|
877 | /* Ignore uninitialized (zeroed) mixer sink buffers (happens with AC'97 during VM construction). */
|
---|
878 | if ( pMixBuf->uMagic == 0
|
---|
879 | || pMixBuf->uMagic == AUDIOMIXBUF_MAGIC_DEAD)
|
---|
880 | return;
|
---|
881 |
|
---|
882 | AUDMIXBUF_LOG(("%s\n", pMixBuf->pszName));
|
---|
883 |
|
---|
884 | pMixBuf->offRead = 0;
|
---|
885 | pMixBuf->offWrite = 0;
|
---|
886 | pMixBuf->cUsed = 0;
|
---|
887 | }
|
---|
888 |
|
---|
889 |
|
---|
890 | /**
|
---|
891 | * Gets the maximum number of audio frames this buffer can hold.
|
---|
892 | *
|
---|
893 | * @returns Number of frames.
|
---|
894 | * @param pMixBuf The mixing buffer.
|
---|
895 | */
|
---|
896 | uint32_t AudioMixBufSize(PCAUDIOMIXBUF pMixBuf)
|
---|
897 | {
|
---|
898 | AssertPtrReturn(pMixBuf, 0);
|
---|
899 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
900 | return pMixBuf->cFrames;
|
---|
901 | }
|
---|
902 |
|
---|
903 |
|
---|
904 | /**
|
---|
905 | * Gets the maximum number of bytes this buffer can hold.
|
---|
906 | *
|
---|
907 | * @returns Number of bytes.
|
---|
908 | * @param pMixBuf The mixing buffer.
|
---|
909 | */
|
---|
910 | uint32_t AudioMixBufSizeBytes(PCAUDIOMIXBUF pMixBuf)
|
---|
911 | {
|
---|
912 | AssertPtrReturn(pMixBuf, 0);
|
---|
913 | AssertReturn(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC, 0);
|
---|
914 | return AUDIOMIXBUF_F2B(pMixBuf, pMixBuf->cFrames);
|
---|
915 | }
|
---|
916 |
|
---|
917 |
|
---|
918 | /**
|
---|
919 | * Worker for AudioMixBufUsed and AudioMixBufUsedBytes.
|
---|
920 | */
|
---|
921 | DECLINLINE(uint32_t) audioMixBufUsedInternal(PCAUDIOMIXBUF pMixBuf)
|
---|
922 | {
|
---|
923 | uint32_t const cFrames = pMixBuf->cFrames;
|
---|
924 | uint32_t cUsed = pMixBuf->cUsed;
|
---|
925 | AssertStmt(cUsed <= cFrames, cUsed = cFrames);
|
---|
926 | return cUsed;
|
---|
927 | }
|
---|
928 |
|
---|
929 |
|
---|
930 | /**
|
---|
931 | * Get the number of used (readable) frames in the buffer.
|
---|
932 | *
|
---|
933 | * @returns Number of frames.
|
---|
934 | * @param pMixBuf The mixing buffer.
|
---|
935 | */
|
---|
936 | uint32_t AudioMixBufUsed(PCAUDIOMIXBUF pMixBuf)
|
---|
937 | {
|
---|
938 | AssertPtrReturn(pMixBuf, 0);
|
---|
939 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
940 | return audioMixBufUsedInternal(pMixBuf);
|
---|
941 | }
|
---|
942 |
|
---|
943 |
|
---|
944 | /**
|
---|
945 | * Get the number of (readable) bytes in the buffer.
|
---|
946 | *
|
---|
947 | * @returns Number of bytes.
|
---|
948 | * @param pMixBuf The mixing buffer.
|
---|
949 | */
|
---|
950 | uint32_t AudioMixBufUsedBytes(PCAUDIOMIXBUF pMixBuf)
|
---|
951 | {
|
---|
952 | AssertPtrReturn(pMixBuf, 0);
|
---|
953 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
954 | return AUDIOMIXBUF_F2B(pMixBuf, audioMixBufUsedInternal(pMixBuf));
|
---|
955 | }
|
---|
956 |
|
---|
957 |
|
---|
958 | /**
|
---|
959 | * Worker for AudioMixBufFree and AudioMixBufFreeBytes.
|
---|
960 | */
|
---|
961 | DECLINLINE(uint32_t) audioMixBufFreeInternal(PCAUDIOMIXBUF pMixBuf)
|
---|
962 | {
|
---|
963 | uint32_t const cFrames = pMixBuf->cFrames;
|
---|
964 | uint32_t cUsed = pMixBuf->cUsed;
|
---|
965 | AssertStmt(cUsed <= cFrames, cUsed = cFrames);
|
---|
966 | uint32_t const cFramesFree = cFrames - cUsed;
|
---|
967 |
|
---|
968 | AUDMIXBUF_LOG(("%s: %RU32 of %RU32\n", pMixBuf->pszName, cFramesFree, cFrames));
|
---|
969 | return cFramesFree;
|
---|
970 | }
|
---|
971 |
|
---|
972 |
|
---|
973 | /**
|
---|
974 | * Gets the free buffer space in frames.
|
---|
975 | *
|
---|
976 | * @return Number of frames.
|
---|
977 | * @param pMixBuf The mixing buffer.
|
---|
978 | */
|
---|
979 | uint32_t AudioMixBufFree(PCAUDIOMIXBUF pMixBuf)
|
---|
980 | {
|
---|
981 | AssertPtrReturn(pMixBuf, 0);
|
---|
982 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
983 | return audioMixBufFreeInternal(pMixBuf);
|
---|
984 | }
|
---|
985 |
|
---|
986 |
|
---|
987 | /**
|
---|
988 | * Gets the free buffer space in bytes.
|
---|
989 | *
|
---|
990 | * @return Number of bytes.
|
---|
991 | * @param pMixBuf The mixing buffer.
|
---|
992 | */
|
---|
993 | uint32_t AudioMixBufFreeBytes(PCAUDIOMIXBUF pMixBuf)
|
---|
994 | {
|
---|
995 | AssertPtrReturn(pMixBuf, 0);
|
---|
996 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
997 | return AUDIOMIXBUF_F2B(pMixBuf, audioMixBufFreeInternal(pMixBuf));
|
---|
998 | }
|
---|
999 |
|
---|
1000 |
|
---|
1001 | /**
|
---|
1002 | * Checks if the buffer is empty.
|
---|
1003 | *
|
---|
1004 | * @retval true if empty buffer.
|
---|
1005 | * @retval false if not empty and there are frames to be processed.
|
---|
1006 | * @param pMixBuf The mixing buffer.
|
---|
1007 | */
|
---|
1008 | bool AudioMixBufIsEmpty(PCAUDIOMIXBUF pMixBuf)
|
---|
1009 | {
|
---|
1010 | AssertPtrReturn(pMixBuf, true);
|
---|
1011 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
1012 | return pMixBuf->cUsed == 0;
|
---|
1013 | }
|
---|
1014 |
|
---|
1015 |
|
---|
1016 | /**
|
---|
1017 | * Get the current read position.
|
---|
1018 | *
|
---|
1019 | * This is for the testcase.
|
---|
1020 | *
|
---|
1021 | * @returns Frame number.
|
---|
1022 | * @param pMixBuf The mixing buffer.
|
---|
1023 | */
|
---|
1024 | uint32_t AudioMixBufReadPos(PCAUDIOMIXBUF pMixBuf)
|
---|
1025 | {
|
---|
1026 | AssertPtrReturn(pMixBuf, 0);
|
---|
1027 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
1028 | return pMixBuf->offRead;
|
---|
1029 | }
|
---|
1030 |
|
---|
1031 |
|
---|
1032 | /**
|
---|
1033 | * Gets the current write position.
|
---|
1034 | *
|
---|
1035 | * This is for the testcase.
|
---|
1036 | *
|
---|
1037 | * @returns Frame number.
|
---|
1038 | * @param pMixBuf The mixing buffer.
|
---|
1039 | */
|
---|
1040 | uint32_t AudioMixBufWritePos(PCAUDIOMIXBUF pMixBuf)
|
---|
1041 | {
|
---|
1042 | AssertPtrReturn(pMixBuf, 0);
|
---|
1043 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
1044 | return pMixBuf->offWrite;
|
---|
1045 | }
|
---|
1046 |
|
---|
1047 |
|
---|
1048 | /**
|
---|
1049 | * Creates a mapping between desination channels and source source channels.
|
---|
1050 | *
|
---|
1051 | * @param paidxChannelMap Where to store the mapping. Indexed by
|
---|
1052 | * destination channel. Entry is either source
|
---|
1053 | * channel index or -1 for zero and -2 for silence.
|
---|
1054 | * @param pSrcProps The source properties.
|
---|
1055 | * @param pDstProps The desination properties.
|
---|
1056 | */
|
---|
1057 | static void audioMixBufInitChannelMap(int8_t paidxChannelMap[PDMAUDIO_MAX_CHANNELS],
|
---|
1058 | PCPDMAUDIOPCMPROPS pSrcProps, PCPDMAUDIOPCMPROPS pDstProps)
|
---|
1059 | {
|
---|
1060 | uintptr_t const cDstChannels = PDMAudioPropsChannels(pDstProps);
|
---|
1061 | uintptr_t const cSrcChannels = PDMAudioPropsChannels(pSrcProps);
|
---|
1062 | uintptr_t idxDst;
|
---|
1063 | for (idxDst = 0; idxDst < cDstChannels; idxDst++)
|
---|
1064 | {
|
---|
1065 | uint8_t const idDstCh = pDstProps->aidChannels[idxDst];
|
---|
1066 | if (idDstCh >= PDMAUDIOCHANNELID_FRONT_LEFT && idDstCh < PDMAUDIOCHANNELID_END)
|
---|
1067 | {
|
---|
1068 | uintptr_t idxSrc;
|
---|
1069 | for (idxSrc = 0; idxSrc < cSrcChannels; idxSrc++)
|
---|
1070 | if (idDstCh == pSrcProps->aidChannels[idxSrc])
|
---|
1071 | {
|
---|
1072 | paidxChannelMap[idxDst] = idxSrc;
|
---|
1073 | break;
|
---|
1074 | }
|
---|
1075 | if (idxSrc >= cSrcChannels)
|
---|
1076 | {
|
---|
1077 | /** @todo deal with mono. */
|
---|
1078 | paidxChannelMap[idxDst] = -2;
|
---|
1079 | }
|
---|
1080 | }
|
---|
1081 | else if (idDstCh == PDMAUDIOCHANNELID_UNKNOWN)
|
---|
1082 | {
|
---|
1083 | /** @todo What to do here? Pick unused source channels in order? */
|
---|
1084 | paidxChannelMap[idxDst] = -2;
|
---|
1085 | }
|
---|
1086 | else
|
---|
1087 | {
|
---|
1088 | AssertMsg(idDstCh == PDMAUDIOCHANNELID_UNUSED_SILENCE || idDstCh == PDMAUDIOCHANNELID_UNUSED_ZERO,
|
---|
1089 | ("idxDst=%u idDstCh=%u\n", idxDst, idDstCh));
|
---|
1090 | paidxChannelMap[idxDst] = idDstCh == PDMAUDIOCHANNELID_UNUSED_SILENCE ? -2 : -1;
|
---|
1091 | }
|
---|
1092 | }
|
---|
1093 |
|
---|
1094 | /* Set the remainder to -1 just to be sure their are safe. */
|
---|
1095 | for (; idxDst < PDMAUDIO_MAX_CHANNELS; idxDst++)
|
---|
1096 | paidxChannelMap[idxDst] = -1;
|
---|
1097 | }
|
---|
1098 |
|
---|
1099 |
|
---|
1100 | /**
|
---|
1101 | * Initializes the peek state, setting up encoder and (if necessary) resampling.
|
---|
1102 | *
|
---|
1103 | * @returns VBox status code.
|
---|
1104 | */
|
---|
1105 | int AudioMixBufInitPeekState(PCAUDIOMIXBUF pMixBuf, PAUDIOMIXBUFPEEKSTATE pState, PCPDMAUDIOPCMPROPS pProps)
|
---|
1106 | {
|
---|
1107 | AssertPtr(pMixBuf);
|
---|
1108 | AssertPtr(pState);
|
---|
1109 | AssertPtr(pProps);
|
---|
1110 |
|
---|
1111 | /*
|
---|
1112 | * Pick the encoding function first.
|
---|
1113 | */
|
---|
1114 | uint8_t const cbSample = PDMAudioPropsSampleSize(pProps);
|
---|
1115 | uint8_t const cSrcCh = PDMAudioPropsChannels(&pMixBuf->Props);
|
---|
1116 | uint8_t const cDstCh = PDMAudioPropsChannels(pProps);
|
---|
1117 | pState->cSrcChannels = cSrcCh;
|
---|
1118 | pState->cDstChannels = cDstCh;
|
---|
1119 | pState->cbDstFrame = PDMAudioPropsFrameSize(pProps);
|
---|
1120 | audioMixBufInitChannelMap(pState->aidxChannelMap, &pMixBuf->Props, pProps);
|
---|
1121 | AssertReturn(cDstCh > 0 && cDstCh <= PDMAUDIO_MAX_CHANNELS, VERR_OUT_OF_RANGE);
|
---|
1122 | AssertReturn(cSrcCh > 0 && cSrcCh <= PDMAUDIO_MAX_CHANNELS, VERR_OUT_OF_RANGE);
|
---|
1123 |
|
---|
1124 | if (PDMAudioPropsIsSigned(pProps))
|
---|
1125 | {
|
---|
1126 | /* Assign generic encoder first. */
|
---|
1127 | switch (cbSample)
|
---|
1128 | {
|
---|
1129 | case 1: pState->pfnEncode = audioMixBufEncodeGenericS8; break;
|
---|
1130 | case 2: pState->pfnEncode = audioMixBufEncodeGenericS16; break;
|
---|
1131 | case 4: pState->pfnEncode = audioMixBufEncodeGenericS32; break;
|
---|
1132 | case 8:
|
---|
1133 | AssertReturn(pProps->fRaw, VERR_DISK_INVALID_FORMAT);
|
---|
1134 | pState->pfnEncode = audioMixBufEncodeGenericRaw;
|
---|
1135 | break;
|
---|
1136 | default:
|
---|
1137 | AssertMsgFailedReturn(("%u bytes\n", cbSample), VERR_OUT_OF_RANGE);
|
---|
1138 | }
|
---|
1139 |
|
---|
1140 | /* Any specializations available? */
|
---|
1141 | switch (cDstCh)
|
---|
1142 | {
|
---|
1143 | case 1:
|
---|
1144 | if (cSrcCh == 1)
|
---|
1145 | switch (cbSample)
|
---|
1146 | {
|
---|
1147 | case 1: pState->pfnEncode = audioMixBufEncode1ChTo1ChS8; break;
|
---|
1148 | case 2: pState->pfnEncode = audioMixBufEncode1ChTo1ChS16; break;
|
---|
1149 | case 4: pState->pfnEncode = audioMixBufEncode1ChTo1ChS32; break;
|
---|
1150 | case 8: pState->pfnEncode = audioMixBufEncode1ChTo1ChRaw; break;
|
---|
1151 | }
|
---|
1152 | else if (cSrcCh == 2)
|
---|
1153 | switch (cbSample)
|
---|
1154 | {
|
---|
1155 | case 1: pState->pfnEncode = audioMixBufEncode2ChTo1ChS8; break;
|
---|
1156 | case 2: pState->pfnEncode = audioMixBufEncode2ChTo1ChS16; break;
|
---|
1157 | case 4: pState->pfnEncode = audioMixBufEncode2ChTo1ChS32; break;
|
---|
1158 | case 8: pState->pfnEncode = audioMixBufEncode2ChTo1ChRaw; break;
|
---|
1159 | }
|
---|
1160 | break;
|
---|
1161 |
|
---|
1162 | case 2:
|
---|
1163 | if (cSrcCh == 1)
|
---|
1164 | switch (cbSample)
|
---|
1165 | {
|
---|
1166 | case 1: pState->pfnEncode = audioMixBufEncode1ChTo2ChS8; break;
|
---|
1167 | case 2: pState->pfnEncode = audioMixBufEncode1ChTo2ChS16; break;
|
---|
1168 | case 4: pState->pfnEncode = audioMixBufEncode1ChTo2ChS32; break;
|
---|
1169 | case 8: pState->pfnEncode = audioMixBufEncode1ChTo2ChRaw; break;
|
---|
1170 | }
|
---|
1171 | else if (cSrcCh == 2)
|
---|
1172 | switch (cbSample)
|
---|
1173 | {
|
---|
1174 | case 1: pState->pfnEncode = audioMixBufEncode2ChTo2ChS8; break;
|
---|
1175 | case 2: pState->pfnEncode = audioMixBufEncode2ChTo2ChS16; break;
|
---|
1176 | case 4: pState->pfnEncode = audioMixBufEncode2ChTo2ChS32; break;
|
---|
1177 | case 8: pState->pfnEncode = audioMixBufEncode2ChTo2ChRaw; break;
|
---|
1178 | }
|
---|
1179 | break;
|
---|
1180 | }
|
---|
1181 | }
|
---|
1182 | else
|
---|
1183 | {
|
---|
1184 | /* Assign generic encoder first. */
|
---|
1185 | switch (cbSample)
|
---|
1186 | {
|
---|
1187 | case 1: pState->pfnEncode = audioMixBufEncodeGenericU8; break;
|
---|
1188 | case 2: pState->pfnEncode = audioMixBufEncodeGenericU16; break;
|
---|
1189 | case 4: pState->pfnEncode = audioMixBufEncodeGenericU32; break;
|
---|
1190 | default:
|
---|
1191 | AssertMsgFailedReturn(("%u bytes\n", cbSample), VERR_OUT_OF_RANGE);
|
---|
1192 | }
|
---|
1193 |
|
---|
1194 | /* Any specializations available? */
|
---|
1195 | switch (cDstCh)
|
---|
1196 | {
|
---|
1197 | case 1:
|
---|
1198 | if (cSrcCh == 1)
|
---|
1199 | switch (cbSample)
|
---|
1200 | {
|
---|
1201 | case 1: pState->pfnEncode = audioMixBufEncode1ChTo1ChU8; break;
|
---|
1202 | case 2: pState->pfnEncode = audioMixBufEncode1ChTo1ChU16; break;
|
---|
1203 | case 4: pState->pfnEncode = audioMixBufEncode1ChTo1ChU32; break;
|
---|
1204 | }
|
---|
1205 | else if (cSrcCh == 2)
|
---|
1206 | switch (cbSample)
|
---|
1207 | {
|
---|
1208 | case 1: pState->pfnEncode = audioMixBufEncode2ChTo1ChU8; break;
|
---|
1209 | case 2: pState->pfnEncode = audioMixBufEncode2ChTo1ChU16; break;
|
---|
1210 | case 4: pState->pfnEncode = audioMixBufEncode2ChTo1ChU32; break;
|
---|
1211 | }
|
---|
1212 | break;
|
---|
1213 |
|
---|
1214 | case 2:
|
---|
1215 | if (cSrcCh == 1)
|
---|
1216 | switch (cbSample)
|
---|
1217 | {
|
---|
1218 | case 1: pState->pfnEncode = audioMixBufEncode1ChTo2ChU8; break;
|
---|
1219 | case 2: pState->pfnEncode = audioMixBufEncode1ChTo2ChU16; break;
|
---|
1220 | case 4: pState->pfnEncode = audioMixBufEncode1ChTo2ChU32; break;
|
---|
1221 | }
|
---|
1222 | else if (cSrcCh == 2)
|
---|
1223 | switch (cbSample)
|
---|
1224 | {
|
---|
1225 | case 1: pState->pfnEncode = audioMixBufEncode2ChTo2ChU8; break;
|
---|
1226 | case 2: pState->pfnEncode = audioMixBufEncode2ChTo2ChU16; break;
|
---|
1227 | case 4: pState->pfnEncode = audioMixBufEncode2ChTo2ChU32; break;
|
---|
1228 | }
|
---|
1229 | break;
|
---|
1230 | }
|
---|
1231 | }
|
---|
1232 |
|
---|
1233 | int rc = audioMixBufRateInit(&pState->Rate, PDMAudioPropsHz(&pMixBuf->Props), PDMAudioPropsHz(pProps), cSrcCh);
|
---|
1234 | AUDMIXBUF_LOG(("%s: %RU32 Hz to %RU32 Hz => uDstInc=0x%'RX64\n", pMixBuf->pszName, PDMAudioPropsHz(&pMixBuf->Props),
|
---|
1235 | PDMAudioPropsHz(pProps), pState->Rate.uDstInc));
|
---|
1236 | return rc;
|
---|
1237 | }
|
---|
1238 |
|
---|
1239 |
|
---|
1240 | /**
|
---|
1241 | * Initializes the write/blend state, setting up decoders and (if necessary)
|
---|
1242 | * resampling.
|
---|
1243 | *
|
---|
1244 | * @returns VBox status code.
|
---|
1245 | */
|
---|
1246 | int AudioMixBufInitWriteState(PCAUDIOMIXBUF pMixBuf, PAUDIOMIXBUFWRITESTATE pState, PCPDMAUDIOPCMPROPS pProps)
|
---|
1247 | {
|
---|
1248 | AssertPtr(pMixBuf);
|
---|
1249 | AssertPtr(pState);
|
---|
1250 | AssertPtr(pProps);
|
---|
1251 |
|
---|
1252 | /*
|
---|
1253 | * Pick the encoding function first.
|
---|
1254 | */
|
---|
1255 | uint8_t const cbSample = PDMAudioPropsSampleSize(pProps);
|
---|
1256 | uint8_t const cSrcCh = PDMAudioPropsChannels(pProps);
|
---|
1257 | uint8_t const cDstCh = PDMAudioPropsChannels(&pMixBuf->Props);
|
---|
1258 | pState->cSrcChannels = cSrcCh;
|
---|
1259 | pState->cDstChannels = cDstCh;
|
---|
1260 | pState->cbSrcFrame = PDMAudioPropsFrameSize(pProps);
|
---|
1261 | audioMixBufInitChannelMap(pState->aidxChannelMap, pProps, &pMixBuf->Props);
|
---|
1262 |
|
---|
1263 | if (PDMAudioPropsIsSigned(pProps))
|
---|
1264 | {
|
---|
1265 | /* Assign generic decoders first. */
|
---|
1266 | switch (cbSample)
|
---|
1267 | {
|
---|
1268 | case 1:
|
---|
1269 | pState->pfnDecode = audioMixBufDecodeGenericS8;
|
---|
1270 | pState->pfnDecodeBlend = audioMixBufDecodeGenericS8Blend;
|
---|
1271 | break;
|
---|
1272 | case 2:
|
---|
1273 | pState->pfnDecode = audioMixBufDecodeGenericS16;
|
---|
1274 | pState->pfnDecodeBlend = audioMixBufDecodeGenericS16Blend;
|
---|
1275 | break;
|
---|
1276 | case 4:
|
---|
1277 | pState->pfnDecode = audioMixBufDecodeGenericS32;
|
---|
1278 | pState->pfnDecodeBlend = audioMixBufDecodeGenericS32Blend;
|
---|
1279 | break;
|
---|
1280 | case 8:
|
---|
1281 | AssertReturn(pProps->fRaw, VERR_DISK_INVALID_FORMAT);
|
---|
1282 | pState->pfnDecode = audioMixBufDecodeGenericRaw;
|
---|
1283 | pState->pfnDecodeBlend = audioMixBufDecodeGenericRawBlend;
|
---|
1284 | break;
|
---|
1285 | default:
|
---|
1286 | AssertMsgFailedReturn(("%u bytes\n", cbSample), VERR_OUT_OF_RANGE);
|
---|
1287 | }
|
---|
1288 |
|
---|
1289 | /* Any specializations available? */
|
---|
1290 | switch (cDstCh)
|
---|
1291 | {
|
---|
1292 | case 1:
|
---|
1293 | if (cSrcCh == 1)
|
---|
1294 | switch (cbSample)
|
---|
1295 | {
|
---|
1296 | case 1:
|
---|
1297 | pState->pfnDecode = audioMixBufDecode1ChTo1ChS8;
|
---|
1298 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo1ChS8Blend;
|
---|
1299 | break;
|
---|
1300 | case 2:
|
---|
1301 | pState->pfnDecode = audioMixBufDecode1ChTo1ChS16;
|
---|
1302 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo1ChS16Blend;
|
---|
1303 | break;
|
---|
1304 | case 4:
|
---|
1305 | pState->pfnDecode = audioMixBufDecode1ChTo1ChS32;
|
---|
1306 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo1ChS32Blend;
|
---|
1307 | break;
|
---|
1308 | case 8:
|
---|
1309 | pState->pfnDecode = audioMixBufDecode1ChTo1ChRaw;
|
---|
1310 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo1ChRawBlend;
|
---|
1311 | break;
|
---|
1312 | }
|
---|
1313 | else if (cSrcCh == 2)
|
---|
1314 | switch (cbSample)
|
---|
1315 | {
|
---|
1316 | case 1:
|
---|
1317 | pState->pfnDecode = audioMixBufDecode2ChTo1ChS8;
|
---|
1318 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo1ChS8Blend;
|
---|
1319 | break;
|
---|
1320 | case 2:
|
---|
1321 | pState->pfnDecode = audioMixBufDecode2ChTo1ChS16;
|
---|
1322 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo1ChS16Blend;
|
---|
1323 | break;
|
---|
1324 | case 4:
|
---|
1325 | pState->pfnDecode = audioMixBufDecode2ChTo1ChS32;
|
---|
1326 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo1ChS32Blend;
|
---|
1327 | break;
|
---|
1328 | case 8:
|
---|
1329 | pState->pfnDecode = audioMixBufDecode2ChTo1ChRaw;
|
---|
1330 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo1ChRawBlend;
|
---|
1331 | break;
|
---|
1332 | }
|
---|
1333 | break;
|
---|
1334 |
|
---|
1335 | case 2:
|
---|
1336 | if (cSrcCh == 1)
|
---|
1337 | switch (cbSample)
|
---|
1338 | {
|
---|
1339 | case 1:
|
---|
1340 | pState->pfnDecode = audioMixBufDecode1ChTo2ChS8;
|
---|
1341 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo2ChS8Blend;
|
---|
1342 | break;
|
---|
1343 | case 2:
|
---|
1344 | pState->pfnDecode = audioMixBufDecode1ChTo2ChS16;
|
---|
1345 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo2ChS16Blend;
|
---|
1346 | break;
|
---|
1347 | case 4:
|
---|
1348 | pState->pfnDecode = audioMixBufDecode1ChTo2ChS32;
|
---|
1349 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo2ChS32Blend;
|
---|
1350 | break;
|
---|
1351 | case 8:
|
---|
1352 | pState->pfnDecode = audioMixBufDecode1ChTo2ChRaw;
|
---|
1353 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo2ChRawBlend;
|
---|
1354 | break;
|
---|
1355 | }
|
---|
1356 | else if (cSrcCh == 2)
|
---|
1357 | switch (cbSample)
|
---|
1358 | {
|
---|
1359 | case 1:
|
---|
1360 | pState->pfnDecode = audioMixBufDecode2ChTo2ChS8;
|
---|
1361 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo2ChS8Blend;
|
---|
1362 | break;
|
---|
1363 | case 2:
|
---|
1364 | pState->pfnDecode = audioMixBufDecode2ChTo2ChS16;
|
---|
1365 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo2ChS16Blend;
|
---|
1366 | break;
|
---|
1367 | case 4:
|
---|
1368 | pState->pfnDecode = audioMixBufDecode2ChTo2ChS32;
|
---|
1369 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo2ChS32Blend;
|
---|
1370 | break;
|
---|
1371 | case 8:
|
---|
1372 | pState->pfnDecode = audioMixBufDecode2ChTo2ChRaw;
|
---|
1373 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo2ChRawBlend;
|
---|
1374 | break;
|
---|
1375 | }
|
---|
1376 | break;
|
---|
1377 | }
|
---|
1378 | }
|
---|
1379 | else
|
---|
1380 | {
|
---|
1381 | /* Assign generic decoders first. */
|
---|
1382 | switch (cbSample)
|
---|
1383 | {
|
---|
1384 | case 1:
|
---|
1385 | pState->pfnDecode = audioMixBufDecodeGenericU8;
|
---|
1386 | pState->pfnDecodeBlend = audioMixBufDecodeGenericU8Blend;
|
---|
1387 | break;
|
---|
1388 | case 2:
|
---|
1389 | pState->pfnDecode = audioMixBufDecodeGenericU16;
|
---|
1390 | pState->pfnDecodeBlend = audioMixBufDecodeGenericU16Blend;
|
---|
1391 | break;
|
---|
1392 | case 4:
|
---|
1393 | pState->pfnDecode = audioMixBufDecodeGenericU32;
|
---|
1394 | pState->pfnDecodeBlend = audioMixBufDecodeGenericU32Blend;
|
---|
1395 | break;
|
---|
1396 | default:
|
---|
1397 | AssertMsgFailedReturn(("%u bytes\n", cbSample), VERR_OUT_OF_RANGE);
|
---|
1398 | }
|
---|
1399 |
|
---|
1400 | /* Any specializations available? */
|
---|
1401 | switch (cDstCh)
|
---|
1402 | {
|
---|
1403 | case 1:
|
---|
1404 | if (cSrcCh == 1)
|
---|
1405 | switch (cbSample)
|
---|
1406 | {
|
---|
1407 | case 1:
|
---|
1408 | pState->pfnDecode = audioMixBufDecode1ChTo1ChU8;
|
---|
1409 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo1ChU8Blend;
|
---|
1410 | break;
|
---|
1411 | case 2:
|
---|
1412 | pState->pfnDecode = audioMixBufDecode1ChTo1ChU16;
|
---|
1413 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo1ChU16Blend;
|
---|
1414 | break;
|
---|
1415 | case 4:
|
---|
1416 | pState->pfnDecode = audioMixBufDecode1ChTo1ChU32;
|
---|
1417 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo1ChU32Blend;
|
---|
1418 | break;
|
---|
1419 | }
|
---|
1420 | else if (cSrcCh == 2)
|
---|
1421 | switch (cbSample)
|
---|
1422 | {
|
---|
1423 | case 1:
|
---|
1424 | pState->pfnDecode = audioMixBufDecode2ChTo1ChU8;
|
---|
1425 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo1ChU8Blend;
|
---|
1426 | break;
|
---|
1427 | case 2:
|
---|
1428 | pState->pfnDecode = audioMixBufDecode2ChTo1ChU16;
|
---|
1429 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo1ChU16Blend;
|
---|
1430 | break;
|
---|
1431 | case 4:
|
---|
1432 | pState->pfnDecode = audioMixBufDecode2ChTo1ChU32;
|
---|
1433 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo1ChU32Blend;
|
---|
1434 | break;
|
---|
1435 | }
|
---|
1436 | break;
|
---|
1437 |
|
---|
1438 | case 2:
|
---|
1439 | if (cSrcCh == 1)
|
---|
1440 | switch (cbSample)
|
---|
1441 | {
|
---|
1442 | case 1:
|
---|
1443 | pState->pfnDecode = audioMixBufDecode1ChTo2ChU8;
|
---|
1444 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo2ChU8Blend;
|
---|
1445 | break;
|
---|
1446 | case 2:
|
---|
1447 | pState->pfnDecode = audioMixBufDecode1ChTo2ChU16;
|
---|
1448 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo2ChU16Blend;
|
---|
1449 | break;
|
---|
1450 | case 4:
|
---|
1451 | pState->pfnDecode = audioMixBufDecode1ChTo2ChU32;
|
---|
1452 | pState->pfnDecodeBlend = audioMixBufDecode1ChTo2ChU32Blend;
|
---|
1453 | break;
|
---|
1454 | }
|
---|
1455 | else if (cSrcCh == 2)
|
---|
1456 | switch (cbSample)
|
---|
1457 | {
|
---|
1458 | case 1:
|
---|
1459 | pState->pfnDecode = audioMixBufDecode2ChTo2ChU8;
|
---|
1460 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo2ChU8Blend;
|
---|
1461 | break;
|
---|
1462 | case 2:
|
---|
1463 | pState->pfnDecode = audioMixBufDecode2ChTo2ChU16;
|
---|
1464 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo2ChU16Blend;
|
---|
1465 | break;
|
---|
1466 | case 4:
|
---|
1467 | pState->pfnDecode = audioMixBufDecode2ChTo2ChU32;
|
---|
1468 | pState->pfnDecodeBlend = audioMixBufDecode2ChTo2ChU32Blend;
|
---|
1469 | break;
|
---|
1470 | }
|
---|
1471 | break;
|
---|
1472 | }
|
---|
1473 | }
|
---|
1474 |
|
---|
1475 | int rc = audioMixBufRateInit(&pState->Rate, PDMAudioPropsHz(pProps), PDMAudioPropsHz(&pMixBuf->Props), cDstCh);
|
---|
1476 | AUDMIXBUF_LOG(("%s: %RU32 Hz to %RU32 Hz => uDstInc=0x%'RX64\n", pMixBuf->pszName, PDMAudioPropsHz(pProps),
|
---|
1477 | PDMAudioPropsHz(&pMixBuf->Props), pState->Rate.uDstInc));
|
---|
1478 | return rc;
|
---|
1479 | }
|
---|
1480 |
|
---|
1481 |
|
---|
1482 | /**
|
---|
1483 | * Worker for AudioMixBufPeek that handles the rate conversion case.
|
---|
1484 | */
|
---|
1485 | DECL_NO_INLINE(static, void)
|
---|
1486 | audioMixBufPeekResampling(PCAUDIOMIXBUF pMixBuf, uint32_t offSrcFrame, uint32_t cMaxSrcFrames, uint32_t *pcSrcFramesPeeked,
|
---|
1487 | PAUDIOMIXBUFPEEKSTATE pState, void *pvDst, uint32_t cbDst, uint32_t *pcbDstPeeked)
|
---|
1488 | {
|
---|
1489 | *pcSrcFramesPeeked = 0;
|
---|
1490 | *pcbDstPeeked = 0;
|
---|
1491 | while (cMaxSrcFrames > 0 && cbDst >= pState->cbDstFrame)
|
---|
1492 | {
|
---|
1493 | /* Rate conversion into temporary buffer. */
|
---|
1494 | int32_t ai32DstRate[1024];
|
---|
1495 | uint32_t cSrcFrames = RT_MIN(pMixBuf->cFrames - offSrcFrame, cMaxSrcFrames);
|
---|
1496 | uint32_t cDstMaxFrames = RT_MIN(RT_ELEMENTS(ai32DstRate) / pState->cSrcChannels, cbDst / pState->cbDstFrame);
|
---|
1497 | uint32_t const cDstFrames = pState->Rate.pfnResample(ai32DstRate, cDstMaxFrames,
|
---|
1498 | &pMixBuf->pi32Samples[offSrcFrame * pMixBuf->cChannels],
|
---|
1499 | cSrcFrames, &cSrcFrames, &pState->Rate);
|
---|
1500 | *pcSrcFramesPeeked += cSrcFrames;
|
---|
1501 | cMaxSrcFrames -= cSrcFrames;
|
---|
1502 | offSrcFrame = (offSrcFrame + cSrcFrames) % pMixBuf->cFrames;
|
---|
1503 |
|
---|
1504 | /* Encode the converted frames. */
|
---|
1505 | uint32_t const cbDstEncoded = cDstFrames * pState->cbDstFrame;
|
---|
1506 | pState->pfnEncode(pvDst, ai32DstRate, cDstFrames, pState);
|
---|
1507 | *pcbDstPeeked += cbDstEncoded;
|
---|
1508 | cbDst -= cbDstEncoded;
|
---|
1509 | pvDst = (uint8_t *)pvDst + cbDstEncoded;
|
---|
1510 | }
|
---|
1511 | }
|
---|
1512 |
|
---|
1513 |
|
---|
1514 | /**
|
---|
1515 | * Copies data out of the mixing buffer, converting it if needed, but leaves the
|
---|
1516 | * read offset untouched.
|
---|
1517 | *
|
---|
1518 | * @param pMixBuf The mixing buffer.
|
---|
1519 | * @param offSrcFrame The offset to start reading at relative to
|
---|
1520 | * current read position (offRead). The caller has
|
---|
1521 | * made sure there is at least this number of
|
---|
1522 | * frames available in the buffer before calling.
|
---|
1523 | * @param cMaxSrcFrames Maximum number of frames to read.
|
---|
1524 | * @param pcSrcFramesPeeked Where to return the actual number of frames read
|
---|
1525 | * from the mixing buffer.
|
---|
1526 | * @param pState Output configuration & conversion state.
|
---|
1527 | * @param pvDst The destination buffer.
|
---|
1528 | * @param cbDst The size of the destination buffer in bytes.
|
---|
1529 | * @param pcbDstPeeked Where to put the actual number of bytes
|
---|
1530 | * returned.
|
---|
1531 | */
|
---|
1532 | void AudioMixBufPeek(PCAUDIOMIXBUF pMixBuf, uint32_t offSrcFrame, uint32_t cMaxSrcFrames, uint32_t *pcSrcFramesPeeked,
|
---|
1533 | PAUDIOMIXBUFPEEKSTATE pState, void *pvDst, uint32_t cbDst, uint32_t *pcbDstPeeked)
|
---|
1534 | {
|
---|
1535 | /*
|
---|
1536 | * Check inputs.
|
---|
1537 | */
|
---|
1538 | AssertPtr(pMixBuf);
|
---|
1539 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
1540 | AssertPtr(pState);
|
---|
1541 | AssertPtr(pState->pfnEncode);
|
---|
1542 | Assert(pState->cSrcChannels == PDMAudioPropsChannels(&pMixBuf->Props));
|
---|
1543 | Assert(cMaxSrcFrames > 0);
|
---|
1544 | Assert(cMaxSrcFrames <= pMixBuf->cFrames);
|
---|
1545 | Assert(offSrcFrame <= pMixBuf->cFrames);
|
---|
1546 | Assert(offSrcFrame + cMaxSrcFrames <= pMixBuf->cUsed);
|
---|
1547 | AssertPtr(pcSrcFramesPeeked);
|
---|
1548 | AssertPtr(pvDst);
|
---|
1549 | Assert(cbDst >= pState->cbDstFrame);
|
---|
1550 | AssertPtr(pcbDstPeeked);
|
---|
1551 |
|
---|
1552 | /*
|
---|
1553 | * Make start frame absolute.
|
---|
1554 | */
|
---|
1555 | offSrcFrame = (pMixBuf->offRead + offSrcFrame) % pMixBuf->cFrames;
|
---|
1556 |
|
---|
1557 | /*
|
---|
1558 | * Hopefully no sample rate conversion is necessary...
|
---|
1559 | */
|
---|
1560 | if (pState->Rate.fNoConversionNeeded)
|
---|
1561 | {
|
---|
1562 | /* Figure out how much we should convert. */
|
---|
1563 | cMaxSrcFrames = RT_MIN(cMaxSrcFrames, cbDst / pState->cbDstFrame);
|
---|
1564 | *pcSrcFramesPeeked = cMaxSrcFrames;
|
---|
1565 | *pcbDstPeeked = cMaxSrcFrames * pState->cbDstFrame;
|
---|
1566 |
|
---|
1567 | /* First chunk. */
|
---|
1568 | uint32_t const cSrcFrames1 = RT_MIN(pMixBuf->cFrames - offSrcFrame, cMaxSrcFrames);
|
---|
1569 | pState->pfnEncode(pvDst, &pMixBuf->pi32Samples[offSrcFrame * pMixBuf->cChannels], cSrcFrames1, pState);
|
---|
1570 |
|
---|
1571 | /* Another chunk from the start of the mixing buffer? */
|
---|
1572 | if (cMaxSrcFrames > cSrcFrames1)
|
---|
1573 | pState->pfnEncode((uint8_t *)pvDst + cSrcFrames1 * pState->cbDstFrame,
|
---|
1574 | &pMixBuf->pi32Samples[0], cMaxSrcFrames - cSrcFrames1, pState);
|
---|
1575 |
|
---|
1576 | //Log9Func(("*pcbDstPeeked=%#x\n%32.*Rhxd\n", *pcbDstPeeked, *pcbDstPeeked, pvDst));
|
---|
1577 | }
|
---|
1578 | else
|
---|
1579 | audioMixBufPeekResampling(pMixBuf, offSrcFrame, cMaxSrcFrames, pcSrcFramesPeeked, pState, pvDst, cbDst, pcbDstPeeked);
|
---|
1580 | }
|
---|
1581 |
|
---|
1582 |
|
---|
1583 | /**
|
---|
1584 | * Worker for AudioMixBufWrite that handles the rate conversion case.
|
---|
1585 | */
|
---|
1586 | DECL_NO_INLINE(static, void)
|
---|
1587 | audioMixBufWriteResampling(PAUDIOMIXBUF pMixBuf, PAUDIOMIXBUFWRITESTATE pState, const void *pvSrcBuf, uint32_t cbSrcBuf,
|
---|
1588 | uint32_t offDstFrame, uint32_t cDstMaxFrames, uint32_t *pcDstFramesWritten)
|
---|
1589 | {
|
---|
1590 | *pcDstFramesWritten = 0;
|
---|
1591 | while (cDstMaxFrames > 0 && cbSrcBuf >= pState->cbSrcFrame)
|
---|
1592 | {
|
---|
1593 | /* Decode into temporary buffer. */
|
---|
1594 | int32_t ai32Decoded[1024];
|
---|
1595 | uint32_t cFramesDecoded = RT_MIN(RT_ELEMENTS(ai32Decoded) / pState->cDstChannels, cbSrcBuf / pState->cbSrcFrame);
|
---|
1596 | pState->pfnDecode(ai32Decoded, pvSrcBuf, cFramesDecoded, pState);
|
---|
1597 | cbSrcBuf -= cFramesDecoded * pState->cbSrcFrame;
|
---|
1598 | pvSrcBuf = (uint8_t const *)pvSrcBuf + cFramesDecoded * pState->cbSrcFrame;
|
---|
1599 |
|
---|
1600 | /* Rate convert that into the mixer. */
|
---|
1601 | uint32_t iFrameDecoded = 0;
|
---|
1602 | while (iFrameDecoded < cFramesDecoded)
|
---|
1603 | {
|
---|
1604 | uint32_t cDstMaxFramesNow = RT_MIN(pMixBuf->cFrames - offDstFrame, cDstMaxFrames);
|
---|
1605 | uint32_t cSrcFrames = cFramesDecoded - iFrameDecoded;
|
---|
1606 | uint32_t const cDstFrames = pState->Rate.pfnResample(&pMixBuf->pi32Samples[offDstFrame * pMixBuf->cChannels],
|
---|
1607 | cDstMaxFramesNow,
|
---|
1608 | &ai32Decoded[iFrameDecoded * pState->cDstChannels],
|
---|
1609 | cSrcFrames, &cSrcFrames, &pState->Rate);
|
---|
1610 |
|
---|
1611 | iFrameDecoded += cSrcFrames;
|
---|
1612 | *pcDstFramesWritten += cDstFrames;
|
---|
1613 | offDstFrame = (offDstFrame + cDstFrames) % pMixBuf->cFrames;
|
---|
1614 | }
|
---|
1615 | }
|
---|
1616 |
|
---|
1617 | /** @todo How to squeeze odd frames out of 22050 => 44100 conversion? */
|
---|
1618 | }
|
---|
1619 |
|
---|
1620 |
|
---|
1621 | /**
|
---|
1622 | * Writes @a cbSrcBuf bytes to the mixer buffer starting at @a offDstFrame,
|
---|
1623 | * converting it as needed, leaving the write offset untouched.
|
---|
1624 | *
|
---|
1625 | * @param pMixBuf The mixing buffer.
|
---|
1626 | * @param pState Source configuration & conversion state.
|
---|
1627 | * @param pvSrcBuf The source frames.
|
---|
1628 | * @param cbSrcBuf Number of bytes of source frames. This will be
|
---|
1629 | * convered in full.
|
---|
1630 | * @param offDstFrame Mixing buffer offset relative to the write
|
---|
1631 | * position.
|
---|
1632 | * @param cDstMaxFrames Max number of frames to write.
|
---|
1633 | * @param pcDstFramesWritten Where to return the number of frames actually
|
---|
1634 | * written.
|
---|
1635 | *
|
---|
1636 | * @note Does not advance the write position, please call AudioMixBufCommit()
|
---|
1637 | * to do that.
|
---|
1638 | */
|
---|
1639 | void AudioMixBufWrite(PAUDIOMIXBUF pMixBuf, PAUDIOMIXBUFWRITESTATE pState, const void *pvSrcBuf, uint32_t cbSrcBuf,
|
---|
1640 | uint32_t offDstFrame, uint32_t cDstMaxFrames, uint32_t *pcDstFramesWritten)
|
---|
1641 | {
|
---|
1642 | /*
|
---|
1643 | * Check inputs.
|
---|
1644 | */
|
---|
1645 | AssertPtr(pMixBuf);
|
---|
1646 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
1647 | AssertPtr(pState);
|
---|
1648 | AssertPtr(pState->pfnDecode);
|
---|
1649 | AssertPtr(pState->pfnDecodeBlend);
|
---|
1650 | Assert(pState->cDstChannels == PDMAudioPropsChannels(&pMixBuf->Props));
|
---|
1651 | Assert(cDstMaxFrames > 0);
|
---|
1652 | Assert(cDstMaxFrames <= pMixBuf->cFrames - pMixBuf->cUsed);
|
---|
1653 | Assert(offDstFrame <= pMixBuf->cFrames);
|
---|
1654 | AssertPtr(pvSrcBuf);
|
---|
1655 | Assert(!(cbSrcBuf % pState->cbSrcFrame));
|
---|
1656 | AssertPtr(pcDstFramesWritten);
|
---|
1657 |
|
---|
1658 | /*
|
---|
1659 | * Make start frame absolute.
|
---|
1660 | */
|
---|
1661 | offDstFrame = (pMixBuf->offWrite + offDstFrame) % pMixBuf->cFrames;
|
---|
1662 |
|
---|
1663 | /*
|
---|
1664 | * Hopefully no sample rate conversion is necessary...
|
---|
1665 | */
|
---|
1666 | if (pState->Rate.fNoConversionNeeded)
|
---|
1667 | {
|
---|
1668 | /* Figure out how much we should convert. */
|
---|
1669 | Assert(cDstMaxFrames >= cbSrcBuf / pState->cbSrcFrame);
|
---|
1670 | cDstMaxFrames = RT_MIN(cDstMaxFrames, cbSrcBuf / pState->cbSrcFrame);
|
---|
1671 | *pcDstFramesWritten = cDstMaxFrames;
|
---|
1672 |
|
---|
1673 | //Log10Func(("cbSrc=%#x\n%32.*Rhxd\n", pState->cbSrcFrame * cDstMaxFrames, pState->cbSrcFrame * cDstMaxFrames, pvSrcBuf));
|
---|
1674 |
|
---|
1675 | /* First chunk. */
|
---|
1676 | uint32_t const cDstFrames1 = RT_MIN(pMixBuf->cFrames - offDstFrame, cDstMaxFrames);
|
---|
1677 | pState->pfnDecode(&pMixBuf->pi32Samples[offDstFrame * pMixBuf->cChannels], pvSrcBuf, cDstFrames1, pState);
|
---|
1678 | //Log8Func(("offDstFrame=%#x cDstFrames1=%#x\n%32.*Rhxd\n", offDstFrame, cDstFrames1,
|
---|
1679 | // cDstFrames1 * pMixBuf->cbFrame, &pMixBuf->pi32Samples[offDstFrame * pMixBuf->cChannels]));
|
---|
1680 |
|
---|
1681 | /* Another chunk from the start of the mixing buffer? */
|
---|
1682 | if (cDstMaxFrames > cDstFrames1)
|
---|
1683 | {
|
---|
1684 | pState->pfnDecode(&pMixBuf->pi32Samples[0], (uint8_t *)pvSrcBuf + cDstFrames1 * pState->cbSrcFrame,
|
---|
1685 | cDstMaxFrames - cDstFrames1, pState);
|
---|
1686 | //Log8Func(("cDstFrames2=%#x\n%32.*Rhxd\n", cDstMaxFrames - cDstFrames1,
|
---|
1687 | // (cDstMaxFrames - cDstFrames1) * pMixBuf->cbFrame, &pMixBuf->pi32Samples[0]));
|
---|
1688 | }
|
---|
1689 | }
|
---|
1690 | else
|
---|
1691 | audioMixBufWriteResampling(pMixBuf, pState, pvSrcBuf, cbSrcBuf, offDstFrame, cDstMaxFrames, pcDstFramesWritten);
|
---|
1692 | }
|
---|
1693 |
|
---|
1694 |
|
---|
1695 | /**
|
---|
1696 | * Worker for AudioMixBufBlend that handles the rate conversion case.
|
---|
1697 | */
|
---|
1698 | DECL_NO_INLINE(static, void)
|
---|
1699 | audioMixBufBlendResampling(PAUDIOMIXBUF pMixBuf, PAUDIOMIXBUFWRITESTATE pState, const void *pvSrcBuf, uint32_t cbSrcBuf,
|
---|
1700 | uint32_t offDstFrame, uint32_t cDstMaxFrames, uint32_t *pcDstFramesBlended)
|
---|
1701 | {
|
---|
1702 | *pcDstFramesBlended = 0;
|
---|
1703 | while (cDstMaxFrames > 0 && cbSrcBuf >= pState->cbSrcFrame)
|
---|
1704 | {
|
---|
1705 | /* Decode into temporary buffer. This then has the destination channel count. */
|
---|
1706 | int32_t ai32Decoded[1024];
|
---|
1707 | uint32_t cFramesDecoded = RT_MIN(RT_ELEMENTS(ai32Decoded) / pState->cDstChannels, cbSrcBuf / pState->cbSrcFrame);
|
---|
1708 | pState->pfnDecode(ai32Decoded, pvSrcBuf, cFramesDecoded, pState);
|
---|
1709 | cbSrcBuf -= cFramesDecoded * pState->cbSrcFrame;
|
---|
1710 | pvSrcBuf = (uint8_t const *)pvSrcBuf + cFramesDecoded * pState->cbSrcFrame;
|
---|
1711 |
|
---|
1712 | /* Rate convert that into another temporary buffer and then blend that into the mixer. */
|
---|
1713 | uint32_t iFrameDecoded = 0;
|
---|
1714 | while (iFrameDecoded < cFramesDecoded)
|
---|
1715 | {
|
---|
1716 | int32_t ai32Rate[1024];
|
---|
1717 | uint32_t cDstMaxFramesNow = RT_MIN(RT_ELEMENTS(ai32Rate) / pState->cDstChannels, cDstMaxFrames);
|
---|
1718 | uint32_t cSrcFrames = cFramesDecoded - iFrameDecoded;
|
---|
1719 | uint32_t const cDstFrames = pState->Rate.pfnResample(&ai32Rate[0], cDstMaxFramesNow,
|
---|
1720 | &ai32Decoded[iFrameDecoded * pState->cDstChannels],
|
---|
1721 | cSrcFrames, &cSrcFrames, &pState->Rate);
|
---|
1722 |
|
---|
1723 | /* First chunk.*/
|
---|
1724 | uint32_t const cDstFrames1 = RT_MIN(pMixBuf->cFrames - offDstFrame, cDstFrames);
|
---|
1725 | audioMixBufBlendBuffer(&pMixBuf->pi32Samples[offDstFrame * pMixBuf->cChannels],
|
---|
1726 | ai32Rate, cDstFrames1, pState->cDstChannels);
|
---|
1727 |
|
---|
1728 | /* Another chunk from the start of the mixing buffer? */
|
---|
1729 | if (cDstFrames > cDstFrames1)
|
---|
1730 | audioMixBufBlendBuffer(&pMixBuf->pi32Samples[0], &ai32Rate[cDstFrames1 * pState->cDstChannels],
|
---|
1731 | cDstFrames - cDstFrames1, pState->cDstChannels);
|
---|
1732 |
|
---|
1733 | /* Advance */
|
---|
1734 | iFrameDecoded += cSrcFrames;
|
---|
1735 | *pcDstFramesBlended += cDstFrames;
|
---|
1736 | offDstFrame = (offDstFrame + cDstFrames) % pMixBuf->cFrames;
|
---|
1737 | }
|
---|
1738 | }
|
---|
1739 |
|
---|
1740 | /** @todo How to squeeze odd frames out of 22050 => 44100 conversion? */
|
---|
1741 | }
|
---|
1742 |
|
---|
1743 |
|
---|
1744 | /**
|
---|
1745 | * @todo not sure if 'blend' is the appropriate term here, but you know what
|
---|
1746 | * we mean.
|
---|
1747 | */
|
---|
1748 | void AudioMixBufBlend(PAUDIOMIXBUF pMixBuf, PAUDIOMIXBUFWRITESTATE pState, const void *pvSrcBuf, uint32_t cbSrcBuf,
|
---|
1749 | uint32_t offDstFrame, uint32_t cDstMaxFrames, uint32_t *pcDstFramesBlended)
|
---|
1750 | {
|
---|
1751 | /*
|
---|
1752 | * Check inputs.
|
---|
1753 | */
|
---|
1754 | AssertPtr(pMixBuf);
|
---|
1755 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
1756 | AssertPtr(pState);
|
---|
1757 | AssertPtr(pState->pfnDecode);
|
---|
1758 | AssertPtr(pState->pfnDecodeBlend);
|
---|
1759 | Assert(pState->cDstChannels == PDMAudioPropsChannels(&pMixBuf->Props));
|
---|
1760 | Assert(cDstMaxFrames > 0);
|
---|
1761 | Assert(cDstMaxFrames <= pMixBuf->cFrames - pMixBuf->cUsed);
|
---|
1762 | Assert(offDstFrame <= pMixBuf->cFrames);
|
---|
1763 | AssertPtr(pvSrcBuf);
|
---|
1764 | Assert(!(cbSrcBuf % pState->cbSrcFrame));
|
---|
1765 | AssertPtr(pcDstFramesBlended);
|
---|
1766 |
|
---|
1767 | /*
|
---|
1768 | * Make start frame absolute.
|
---|
1769 | */
|
---|
1770 | offDstFrame = (pMixBuf->offWrite + offDstFrame) % pMixBuf->cFrames;
|
---|
1771 |
|
---|
1772 | /*
|
---|
1773 | * Hopefully no sample rate conversion is necessary...
|
---|
1774 | */
|
---|
1775 | if (pState->Rate.fNoConversionNeeded)
|
---|
1776 | {
|
---|
1777 | /* Figure out how much we should convert. */
|
---|
1778 | Assert(cDstMaxFrames >= cbSrcBuf / pState->cbSrcFrame);
|
---|
1779 | cDstMaxFrames = RT_MIN(cDstMaxFrames, cbSrcBuf / pState->cbSrcFrame);
|
---|
1780 | *pcDstFramesBlended = cDstMaxFrames;
|
---|
1781 |
|
---|
1782 | /* First chunk. */
|
---|
1783 | uint32_t const cDstFrames1 = RT_MIN(pMixBuf->cFrames - offDstFrame, cDstMaxFrames);
|
---|
1784 | pState->pfnDecodeBlend(&pMixBuf->pi32Samples[offDstFrame * pMixBuf->cChannels], pvSrcBuf, cDstFrames1, pState);
|
---|
1785 |
|
---|
1786 | /* Another chunk from the start of the mixing buffer? */
|
---|
1787 | if (cDstMaxFrames > cDstFrames1)
|
---|
1788 | pState->pfnDecodeBlend(&pMixBuf->pi32Samples[0], (uint8_t *)pvSrcBuf + cDstFrames1 * pState->cbSrcFrame,
|
---|
1789 | cDstMaxFrames - cDstFrames1, pState);
|
---|
1790 | }
|
---|
1791 | else
|
---|
1792 | audioMixBufBlendResampling(pMixBuf, pState, pvSrcBuf, cbSrcBuf, offDstFrame, cDstMaxFrames, pcDstFramesBlended);
|
---|
1793 | }
|
---|
1794 |
|
---|
1795 |
|
---|
1796 | /**
|
---|
1797 | * Writes @a cFrames of silence at @a offFrame relative to current write pos.
|
---|
1798 | *
|
---|
1799 | * This will also adjust the resampling state.
|
---|
1800 | *
|
---|
1801 | * @param pMixBuf The mixing buffer.
|
---|
1802 | * @param pState The write state.
|
---|
1803 | * @param offFrame Where to start writing silence relative to the current
|
---|
1804 | * write position.
|
---|
1805 | * @param cFrames Number of frames of silence.
|
---|
1806 | * @sa AudioMixBufWrite
|
---|
1807 | *
|
---|
1808 | * @note Does not advance the write position, please call AudioMixBufCommit()
|
---|
1809 | * to do that.
|
---|
1810 | */
|
---|
1811 | void AudioMixBufSilence(PAUDIOMIXBUF pMixBuf, PAUDIOMIXBUFWRITESTATE pState, uint32_t offFrame, uint32_t cFrames)
|
---|
1812 | {
|
---|
1813 | /*
|
---|
1814 | * Check inputs.
|
---|
1815 | */
|
---|
1816 | AssertPtr(pMixBuf);
|
---|
1817 | Assert(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
1818 | AssertPtr(pState);
|
---|
1819 | AssertPtr(pState->pfnDecode);
|
---|
1820 | AssertPtr(pState->pfnDecodeBlend);
|
---|
1821 | Assert(pState->cDstChannels == PDMAudioPropsChannels(&pMixBuf->Props));
|
---|
1822 | Assert(cFrames > 0);
|
---|
1823 | #ifdef VBOX_STRICT
|
---|
1824 | uint32_t const cMixBufFree = pMixBuf->cFrames - pMixBuf->cUsed;
|
---|
1825 | #endif
|
---|
1826 | Assert(cFrames <= cMixBufFree);
|
---|
1827 | Assert(offFrame < cMixBufFree);
|
---|
1828 | Assert(offFrame + cFrames <= cMixBufFree);
|
---|
1829 |
|
---|
1830 | /*
|
---|
1831 | * Make start frame absolute.
|
---|
1832 | */
|
---|
1833 | offFrame = (pMixBuf->offWrite + offFrame) % pMixBuf->cFrames;
|
---|
1834 |
|
---|
1835 | /*
|
---|
1836 | * First chunk.
|
---|
1837 | */
|
---|
1838 | uint32_t const cFramesChunk1 = RT_MIN(pMixBuf->cFrames - offFrame, cFrames);
|
---|
1839 | RT_BZERO(&pMixBuf->pi32Samples[offFrame * pMixBuf->cChannels], cFramesChunk1 * pMixBuf->cbFrame);
|
---|
1840 |
|
---|
1841 | /*
|
---|
1842 | * Second chunk, if needed.
|
---|
1843 | */
|
---|
1844 | if (cFrames > cFramesChunk1)
|
---|
1845 | {
|
---|
1846 | cFrames -= cFramesChunk1;
|
---|
1847 | AssertStmt(cFrames <= pMixBuf->cFrames, cFrames = pMixBuf->cFrames);
|
---|
1848 | RT_BZERO(&pMixBuf->pi32Samples[0], cFrames * pMixBuf->cbFrame);
|
---|
1849 | }
|
---|
1850 |
|
---|
1851 | /*
|
---|
1852 | * Reset the resampling state.
|
---|
1853 | */
|
---|
1854 | audioMixBufRateReset(&pState->Rate);
|
---|
1855 | }
|
---|
1856 |
|
---|
1857 |
|
---|
1858 | /**
|
---|
1859 | * Records a blending gap (silence) of @a cFrames.
|
---|
1860 | *
|
---|
1861 | * This is used to adjust or reset the resampling state so we start from a
|
---|
1862 | * silence state the next time we need to blend or write using @a pState.
|
---|
1863 | *
|
---|
1864 | * @param pMixBuf The mixing buffer.
|
---|
1865 | * @param pState The write state.
|
---|
1866 | * @param cFrames Number of frames of silence.
|
---|
1867 | * @sa AudioMixBufSilence
|
---|
1868 | */
|
---|
1869 | void AudioMixBufBlendGap(PAUDIOMIXBUF pMixBuf, PAUDIOMIXBUFWRITESTATE pState, uint32_t cFrames)
|
---|
1870 | {
|
---|
1871 | /*
|
---|
1872 | * For now we'll just reset the resampling state regardless of how many
|
---|
1873 | * frames of silence there is.
|
---|
1874 | */
|
---|
1875 | audioMixBufRateReset(&pState->Rate);
|
---|
1876 | RT_NOREF(pMixBuf, cFrames);
|
---|
1877 | }
|
---|
1878 |
|
---|
1879 |
|
---|
1880 | /**
|
---|
1881 | * Advances the read position of the buffer.
|
---|
1882 | *
|
---|
1883 | * For use after done peeking with AudioMixBufPeek().
|
---|
1884 | *
|
---|
1885 | * @param pMixBuf The mixing buffer.
|
---|
1886 | * @param cFrames Number of frames to advance.
|
---|
1887 | * @sa AudioMixBufCommit
|
---|
1888 | */
|
---|
1889 | void AudioMixBufAdvance(PAUDIOMIXBUF pMixBuf, uint32_t cFrames)
|
---|
1890 | {
|
---|
1891 | AssertPtrReturnVoid(pMixBuf);
|
---|
1892 | AssertReturnVoid(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
1893 |
|
---|
1894 | AssertStmt(cFrames <= pMixBuf->cUsed, cFrames = pMixBuf->cUsed);
|
---|
1895 | pMixBuf->cUsed -= cFrames;
|
---|
1896 | pMixBuf->offRead = (pMixBuf->offRead + cFrames) % pMixBuf->cFrames;
|
---|
1897 | LogFlowFunc(("%s: Advanced %u frames: offRead=%u cUsed=%u\n", pMixBuf->pszName, cFrames, pMixBuf->offRead, pMixBuf->cUsed));
|
---|
1898 | }
|
---|
1899 |
|
---|
1900 |
|
---|
1901 | /**
|
---|
1902 | * Worker for audioMixAdjustVolume that adjust one contiguous chunk.
|
---|
1903 | */
|
---|
1904 | static void audioMixAdjustVolumeWorker(PAUDIOMIXBUF pMixBuf, uint32_t off, uint32_t cFrames)
|
---|
1905 | {
|
---|
1906 | int32_t *pi32Samples = &pMixBuf->pi32Samples[off * pMixBuf->cChannels];
|
---|
1907 | switch (pMixBuf->cChannels)
|
---|
1908 | {
|
---|
1909 | case 1:
|
---|
1910 | {
|
---|
1911 | uint32_t const uFactorCh0 = pMixBuf->Volume.auChannels[0];
|
---|
1912 | while (cFrames-- > 0)
|
---|
1913 | {
|
---|
1914 | *pi32Samples = (int32_t)(ASMMult2xS32RetS64(*pi32Samples, uFactorCh0) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1915 | pi32Samples++;
|
---|
1916 | }
|
---|
1917 | break;
|
---|
1918 | }
|
---|
1919 |
|
---|
1920 | case 2:
|
---|
1921 | {
|
---|
1922 | uint32_t const uFactorCh0 = pMixBuf->Volume.auChannels[0];
|
---|
1923 | uint32_t const uFactorCh1 = pMixBuf->Volume.auChannels[1];
|
---|
1924 | while (cFrames-- > 0)
|
---|
1925 | {
|
---|
1926 | pi32Samples[0] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[0], uFactorCh0) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1927 | pi32Samples[1] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[1], uFactorCh1) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1928 | pi32Samples += 2;
|
---|
1929 | }
|
---|
1930 | break;
|
---|
1931 | }
|
---|
1932 |
|
---|
1933 | case 3:
|
---|
1934 | {
|
---|
1935 | uint32_t const uFactorCh0 = pMixBuf->Volume.auChannels[0];
|
---|
1936 | uint32_t const uFactorCh1 = pMixBuf->Volume.auChannels[1];
|
---|
1937 | uint32_t const uFactorCh2 = pMixBuf->Volume.auChannels[2];
|
---|
1938 | while (cFrames-- > 0)
|
---|
1939 | {
|
---|
1940 | pi32Samples[0] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[0], uFactorCh0) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1941 | pi32Samples[1] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[1], uFactorCh1) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1942 | pi32Samples[2] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[2], uFactorCh2) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1943 | pi32Samples += 3;
|
---|
1944 | }
|
---|
1945 | break;
|
---|
1946 | }
|
---|
1947 |
|
---|
1948 | case 4:
|
---|
1949 | {
|
---|
1950 | uint32_t const uFactorCh0 = pMixBuf->Volume.auChannels[0];
|
---|
1951 | uint32_t const uFactorCh1 = pMixBuf->Volume.auChannels[1];
|
---|
1952 | uint32_t const uFactorCh2 = pMixBuf->Volume.auChannels[2];
|
---|
1953 | uint32_t const uFactorCh3 = pMixBuf->Volume.auChannels[3];
|
---|
1954 | while (cFrames-- > 0)
|
---|
1955 | {
|
---|
1956 | pi32Samples[0] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[0], uFactorCh0) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1957 | pi32Samples[1] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[1], uFactorCh1) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1958 | pi32Samples[2] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[2], uFactorCh2) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1959 | pi32Samples[3] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[3], uFactorCh3) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1960 | pi32Samples += 4;
|
---|
1961 | }
|
---|
1962 | break;
|
---|
1963 | }
|
---|
1964 |
|
---|
1965 | case 5:
|
---|
1966 | {
|
---|
1967 | uint32_t const uFactorCh0 = pMixBuf->Volume.auChannels[0];
|
---|
1968 | uint32_t const uFactorCh1 = pMixBuf->Volume.auChannels[1];
|
---|
1969 | uint32_t const uFactorCh2 = pMixBuf->Volume.auChannels[2];
|
---|
1970 | uint32_t const uFactorCh3 = pMixBuf->Volume.auChannels[3];
|
---|
1971 | uint32_t const uFactorCh4 = pMixBuf->Volume.auChannels[4];
|
---|
1972 | while (cFrames-- > 0)
|
---|
1973 | {
|
---|
1974 | pi32Samples[0] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[0], uFactorCh0) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1975 | pi32Samples[1] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[1], uFactorCh1) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1976 | pi32Samples[2] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[2], uFactorCh2) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1977 | pi32Samples[3] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[3], uFactorCh3) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1978 | pi32Samples[4] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[4], uFactorCh4) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1979 | pi32Samples += 5;
|
---|
1980 | }
|
---|
1981 | break;
|
---|
1982 | }
|
---|
1983 |
|
---|
1984 | case 6:
|
---|
1985 | {
|
---|
1986 | uint32_t const uFactorCh0 = pMixBuf->Volume.auChannels[0];
|
---|
1987 | uint32_t const uFactorCh1 = pMixBuf->Volume.auChannels[1];
|
---|
1988 | uint32_t const uFactorCh2 = pMixBuf->Volume.auChannels[2];
|
---|
1989 | uint32_t const uFactorCh3 = pMixBuf->Volume.auChannels[3];
|
---|
1990 | uint32_t const uFactorCh4 = pMixBuf->Volume.auChannels[4];
|
---|
1991 | uint32_t const uFactorCh5 = pMixBuf->Volume.auChannels[5];
|
---|
1992 | while (cFrames-- > 0)
|
---|
1993 | {
|
---|
1994 | pi32Samples[0] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[0], uFactorCh0) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1995 | pi32Samples[1] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[1], uFactorCh1) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1996 | pi32Samples[2] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[2], uFactorCh2) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1997 | pi32Samples[3] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[3], uFactorCh3) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1998 | pi32Samples[4] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[4], uFactorCh4) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
1999 | pi32Samples[5] = (int32_t)(ASMMult2xS32RetS64(pi32Samples[5], uFactorCh5) >> AUDIOMIXBUF_VOL_SHIFT);
|
---|
2000 | pi32Samples += 6;
|
---|
2001 | }
|
---|
2002 | break;
|
---|
2003 | }
|
---|
2004 |
|
---|
2005 | default:
|
---|
2006 | while (cFrames-- > 0)
|
---|
2007 | for (uint32_t iCh = 0; iCh < pMixBuf->cChannels; iCh++, pi32Samples++)
|
---|
2008 | *pi32Samples = ASMMult2xS32RetS64(*pi32Samples, pMixBuf->Volume.auChannels[iCh]) >> AUDIOMIXBUF_VOL_SHIFT;
|
---|
2009 | break;
|
---|
2010 | }
|
---|
2011 | }
|
---|
2012 |
|
---|
2013 |
|
---|
2014 | /**
|
---|
2015 | * Does volume adjustments for the given stretch of the buffer.
|
---|
2016 | *
|
---|
2017 | * @param pMixBuf The mixing buffer.
|
---|
2018 | * @param offFirst Where to start (validated).
|
---|
2019 | * @param cFrames How many frames (validated).
|
---|
2020 | */
|
---|
2021 | static void audioMixAdjustVolume(PAUDIOMIXBUF pMixBuf, uint32_t offFirst, uint32_t cFrames)
|
---|
2022 | {
|
---|
2023 | /* Caller has already validated these, so we don't need to repeat that in non-strict builds. */
|
---|
2024 | Assert(offFirst < pMixBuf->cFrames);
|
---|
2025 | Assert(cFrames <= pMixBuf->cFrames);
|
---|
2026 |
|
---|
2027 | /*
|
---|
2028 | * Muted?
|
---|
2029 | */
|
---|
2030 | if (pMixBuf->Volume.fMuted)
|
---|
2031 | {
|
---|
2032 | /* first chunk */
|
---|
2033 | uint32_t const cFramesChunk1 = RT_MIN(pMixBuf->cFrames - offFirst, cFrames);
|
---|
2034 | RT_BZERO(&pMixBuf->pi32Samples[offFirst * pMixBuf->cChannels], pMixBuf->cbFrame * cFramesChunk1);
|
---|
2035 |
|
---|
2036 | /* second chunk */
|
---|
2037 | if (cFramesChunk1 < cFrames)
|
---|
2038 | RT_BZERO(&pMixBuf->pi32Samples[0], pMixBuf->cbFrame * (cFrames - cFramesChunk1));
|
---|
2039 | }
|
---|
2040 | /*
|
---|
2041 | * Less than max volume?
|
---|
2042 | */
|
---|
2043 | else if (!pMixBuf->Volume.fAllMax)
|
---|
2044 | {
|
---|
2045 | /* first chunk */
|
---|
2046 | uint32_t const cFramesChunk1 = RT_MIN(pMixBuf->cFrames - offFirst, cFrames);
|
---|
2047 | audioMixAdjustVolumeWorker(pMixBuf, offFirst, cFramesChunk1);
|
---|
2048 |
|
---|
2049 | /* second chunk */
|
---|
2050 | if (cFramesChunk1 < cFrames)
|
---|
2051 | audioMixAdjustVolumeWorker(pMixBuf, 0, cFrames - cFramesChunk1);
|
---|
2052 | }
|
---|
2053 | }
|
---|
2054 |
|
---|
2055 |
|
---|
2056 | /**
|
---|
2057 | * Adjust for volume settings and advances the write position of the buffer.
|
---|
2058 | *
|
---|
2059 | * For use after done peeking with AudioMixBufWrite(), AudioMixBufSilence(),
|
---|
2060 | * AudioMixBufBlend() and AudioMixBufBlendGap().
|
---|
2061 | *
|
---|
2062 | * @param pMixBuf The mixing buffer.
|
---|
2063 | * @param cFrames Number of frames to advance.
|
---|
2064 | * @sa AudioMixBufAdvance, AudioMixBufSetVolume
|
---|
2065 | */
|
---|
2066 | void AudioMixBufCommit(PAUDIOMIXBUF pMixBuf, uint32_t cFrames)
|
---|
2067 | {
|
---|
2068 | AssertPtrReturnVoid(pMixBuf);
|
---|
2069 | AssertReturnVoid(pMixBuf->uMagic == AUDIOMIXBUF_MAGIC);
|
---|
2070 |
|
---|
2071 | AssertStmt(cFrames <= pMixBuf->cFrames - pMixBuf->cUsed, cFrames = pMixBuf->cFrames - pMixBuf->cUsed);
|
---|
2072 |
|
---|
2073 | audioMixAdjustVolume(pMixBuf, pMixBuf->offWrite, cFrames);
|
---|
2074 |
|
---|
2075 | pMixBuf->cUsed += cFrames;
|
---|
2076 | pMixBuf->offWrite = (pMixBuf->offWrite + cFrames) % pMixBuf->cFrames;
|
---|
2077 | LogFlowFunc(("%s: Advanced %u frames: offWrite=%u cUsed=%u\n", pMixBuf->pszName, cFrames, pMixBuf->offWrite, pMixBuf->cUsed));
|
---|
2078 | }
|
---|
2079 |
|
---|
2080 |
|
---|
2081 | /**
|
---|
2082 | * Sets the volume.
|
---|
2083 | *
|
---|
2084 | * The volume adjustments are applied by AudioMixBufCommit().
|
---|
2085 | *
|
---|
2086 | * @param pMixBuf Mixing buffer to set volume for.
|
---|
2087 | * @param pVol Pointer to volume structure to set.
|
---|
2088 | */
|
---|
2089 | void AudioMixBufSetVolume(PAUDIOMIXBUF pMixBuf, PCPDMAUDIOVOLUME pVol)
|
---|
2090 | {
|
---|
2091 | AssertPtrReturnVoid(pMixBuf);
|
---|
2092 | AssertPtrReturnVoid(pVol);
|
---|
2093 |
|
---|
2094 | LogFlowFunc(("%s: fMuted=%RTbool auChannels=%.*Rhxs\n",
|
---|
2095 | pMixBuf->pszName, pVol->fMuted, sizeof(pVol->auChannels), pVol->auChannels));
|
---|
2096 |
|
---|
2097 | /*
|
---|
2098 | * Convert PDM audio volume to the internal format.
|
---|
2099 | */
|
---|
2100 | if (!pVol->fMuted)
|
---|
2101 | {
|
---|
2102 | pMixBuf->Volume.fMuted = false;
|
---|
2103 |
|
---|
2104 | AssertCompileSize(pVol->auChannels[0], sizeof(uint8_t));
|
---|
2105 | for (uintptr_t i = 0; i < pMixBuf->cChannels; i++)
|
---|
2106 | pMixBuf->Volume.auChannels[i] = s_aVolumeConv[pVol->auChannels[i]] * (AUDIOMIXBUF_VOL_0DB >> 16);
|
---|
2107 |
|
---|
2108 | pMixBuf->Volume.fAllMax = true;
|
---|
2109 | for (uintptr_t i = 0; i < pMixBuf->cChannels; i++)
|
---|
2110 | if (pMixBuf->Volume.auChannels[i] != AUDIOMIXBUF_VOL_0DB)
|
---|
2111 | {
|
---|
2112 | pMixBuf->Volume.fAllMax = false;
|
---|
2113 | break;
|
---|
2114 | }
|
---|
2115 | }
|
---|
2116 | else
|
---|
2117 | {
|
---|
2118 | pMixBuf->Volume.fMuted = true;
|
---|
2119 | pMixBuf->Volume.fAllMax = false;
|
---|
2120 | for (uintptr_t i = 0; i < RT_ELEMENTS(pMixBuf->Volume.auChannels); i++)
|
---|
2121 | pMixBuf->Volume.auChannels[i] = 0;
|
---|
2122 | }
|
---|
2123 | }
|
---|
2124 |
|
---|