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annotate alsa_pcm_api.h @ 0:c55ea9478c80

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Hello Gensokyo!
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Tue, 21 May 2013 10:29:21 +0200
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0
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1 /*
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2 * ALSA kernel API and common-type definitions
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3 *
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4 * Copyright (c) 2011 by Takashi Iwai <tiwai@suse.de>
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5 *
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6 * This library is free software; you can redistribute it and/or modify
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7 * it under the terms of the GNU Lesser General Public License as
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8 * published by the Free Software Foundation; either version 2.1 of
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9 * the License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful,
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 * GNU Lesser General Public License for more details.
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15 */
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16
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17 #ifndef __ALSA_ASOUND_H
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18 #define __ALSA_ASOUND_H
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19
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20 #include <sys/time.h>
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21 #include <sys/types.h>
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22 #include <sys/ioctl.h>
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23 #include <endian.h>
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24 #if __BYTE_ORDER == __LITTLE_ENDIAN
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25 #define SND_LITTLE_ENDIAN
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26 #elif __BYTE_ORDER == __BIG_ENDIAN
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27 #define SND_BIG_ENDIAN
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28 #else
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29 #error "Unsupported endian..."
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30 #endif
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31
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32 /* protocol version */
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33 #define SNDRV_PROTOCOL_VERSION(major, minor, subminor) \
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34 (((major) << 16) | ((minor) << 8) | (subminor))
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35
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36 /* PCM interface */
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37 #define SNDRV_PCM_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 9)
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38
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39 typedef unsigned long snd_pcm_uframes_t;
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40 typedef long snd_pcm_sframes_t;
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41
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42 typedef enum _snd_pcm_stream {
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43 SND_PCM_STREAM_PLAYBACK = 0,
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44 SND_PCM_STREAM_CAPTURE,
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45 SND_PCM_STREAM_LAST = SND_PCM_STREAM_CAPTURE,
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46 } snd_pcm_stream_t;
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47
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48 typedef enum _snd_pcm_access {
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49 SND_PCM_ACCESS_MMAP_INTERLEAVED = 0,
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50 SND_PCM_ACCESS_MMAP_NONINTERLEAVED,
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51 SND_PCM_ACCESS_MMAP_COMPLEX,
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52 SND_PCM_ACCESS_RW_INTERLEAVED,
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53 SND_PCM_ACCESS_RW_NONINTERLEAVED,
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54 SND_PCM_ACCESS_LAST = SND_PCM_ACCESS_RW_NONINTERLEAVED,
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55 } snd_pcm_access_t;
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56
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57 typedef enum _sndrv_pcm_format {
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58 SND_PCM_FORMAT_UNKNOWN = -1,
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59 SND_PCM_FORMAT_S8 = 0, /* signed */
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60 SND_PCM_FORMAT_U8, /* unsigned */
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61 SND_PCM_FORMAT_S16_LE, /* signed little-endian */
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62 SND_PCM_FORMAT_S16_BE, /* signed big-endian */
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63 SND_PCM_FORMAT_U16_LE,
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64 SND_PCM_FORMAT_U16_BE,
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65 SND_PCM_FORMAT_S24_LE, /* low three bytes */
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66 SND_PCM_FORMAT_S24_BE,
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67 SND_PCM_FORMAT_U24_LE,
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68 SND_PCM_FORMAT_U24_BE,
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69 SND_PCM_FORMAT_S32_LE,
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70 SND_PCM_FORMAT_S32_BE,
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71 SND_PCM_FORMAT_U32_LE,
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72 SND_PCM_FORMAT_U32_BE,
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73 SND_PCM_FORMAT_FLOAT_LE, /* 4-byte float */
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74 SND_PCM_FORMAT_FLOAT_BE,
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75 SND_PCM_FORMAT_FLOAT64_LE, /* 8-byte float */
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76 SND_PCM_FORMAT_FLOAT64_BE,
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77 SND_PCM_FORMAT_IEC958_SUBFRAME_LE, /* IEC-958 subframe */
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78 SND_PCM_FORMAT_IEC958_SUBFRAME_BE,
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79 SND_PCM_FORMAT_MU_LAW,
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80 SND_PCM_FORMAT_A_LAW,
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81 SND_PCM_FORMAT_IMA_ADPCM,
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82 SND_PCM_FORMAT_MPEG,
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83 SND_PCM_FORMAT_GSM,
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84 SND_PCM_FORMAT_SPECIAL = 31,
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85 SND_PCM_FORMAT_S24_3LE = 32, /* in three bytes */
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86 SND_PCM_FORMAT_S24_3BE,
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87 SND_PCM_FORMAT_U24_3LE,
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88 SND_PCM_FORMAT_U24_3BE,
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89 SND_PCM_FORMAT_S20_3LE,
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90 SND_PCM_FORMAT_S20_3BE,
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91 SND_PCM_FORMAT_U20_3LE,
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92 SND_PCM_FORMAT_U20_3BE,
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93 SND_PCM_FORMAT_S18_3LE,
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94 SND_PCM_FORMAT_S18_3BE,
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95 SND_PCM_FORMAT_U18_3LE,
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96 SND_PCM_FORMAT_U18_3BE,
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97 SND_PCM_FORMAT_LAST = SND_PCM_FORMAT_U18_3BE,
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98
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99 #ifdef SND_LITTLE_ENDIAN
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100 SND_PCM_FORMAT_S16 = SND_PCM_FORMAT_S16_LE,
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101 SND_PCM_FORMAT_U16 = SND_PCM_FORMAT_U16_LE,
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102 SND_PCM_FORMAT_S24 = SND_PCM_FORMAT_S24_LE,
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103 SND_PCM_FORMAT_U24 = SND_PCM_FORMAT_U24_LE,
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104 SND_PCM_FORMAT_S32 = SND_PCM_FORMAT_S32_LE,
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105 SND_PCM_FORMAT_U32 = SND_PCM_FORMAT_U32_LE,
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106 SND_PCM_FORMAT_FLOAT = SND_PCM_FORMAT_FLOAT_LE,
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107 SND_PCM_FORMAT_FLOAT64 = SND_PCM_FORMAT_FLOAT64_LE,
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108 SND_PCM_FORMAT_IEC958_SUBFRAME = SND_PCM_FORMAT_IEC958_SUBFRAME_LE,
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109 #endif
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110 #ifdef SND_BIG_ENDIAN
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111 SND_PCM_FORMAT_S16 = SND_PCM_FORMAT_S16_BE,
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112 SND_PCM_FORMAT_U16 = SND_PCM_FORMAT_U16_BE,
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113 SND_PCM_FORMAT_S24 = SND_PCM_FORMAT_S24_BE,
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114 SND_PCM_FORMAT_U24 = SND_PCM_FORMAT_U24_BE,
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115 SND_PCM_FORMAT_S32 = SND_PCM_FORMAT_S32_BE,
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116 SND_PCM_FORMAT_U32 = SND_PCM_FORMAT_U32_BE,
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117 SND_PCM_FORMAT_FLOAT = SND_PCM_FORMAT_FLOAT_BE,
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118 SND_PCM_FORMAT_FLOAT64 = SND_PCM_FORMAT_FLOAT64_BE,
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119 SND_PCM_FORMAT_IEC958_SUBFRAME = SND_PCM_FORMAT_IEC958_SUBFRAME_BE,
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120 #endif
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121 } snd_pcm_format_t;
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122
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123 typedef enum _snd_pcm_subformat {
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124 SND_PCM_SUBFORMAT_STD = 0,
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125 SND_PCM_SUBFORMAT_LAST = SND_PCM_SUBFORMAT_STD,
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126 } snd_pcm_subformat_t;
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127
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128 #define SNDRV_PCM_INFO_MMAP 0x00000001
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129 #define SNDRV_PCM_INFO_MMAP_VALID 0x00000002
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130 #define SNDRV_PCM_INFO_DOUBLE 0x00000004
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131 #define SNDRV_PCM_INFO_BATCH 0x00000010
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132 #define SNDRV_PCM_INFO_INTERLEAVED 0x00000100
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133 #define SNDRV_PCM_INFO_NONINTERLEAVED 0x00000200
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134 #define SNDRV_PCM_INFO_COMPLEX 0x00000400
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135 #define SNDRV_PCM_INFO_BLOCK_TRANSFER 0x00010000
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136 #define SNDRV_PCM_INFO_OVERRANGE 0x00020000
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137 #define SNDRV_PCM_INFO_RESUME 0x00040000
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138 #define SNDRV_PCM_INFO_PAUSE 0x00080000
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139 #define SNDRV_PCM_INFO_HALF_DUPLEX 0x00100000
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140 #define SNDRV_PCM_INFO_JOINT_DUPLEX 0x00200000
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141 #define SNDRV_PCM_INFO_SYNC_START 0x00400000
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142 #define SNDRV_PCM_INFO_NO_PERIOD_WAKEUP 0x00800000
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143
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144 typedef enum _snd_pcm_state {
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145 SND_PCM_STATE_OPEN = 0,
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146 SND_PCM_STATE_SETUP,
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147 SND_PCM_STATE_PREPARED,
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148 SND_PCM_STATE_RUNNING,
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149 SND_PCM_STATE_XRUN,
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150 SND_PCM_STATE_DRAINING,
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151 SND_PCM_STATE_PAUSED,
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152 SND_PCM_STATE_SUSPENDED,
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153 SND_PCM_STATE_DISCONNECTED,
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154 SND_PCM_STATE_LAST = SND_PCM_STATE_DISCONNECTED
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155 } snd_pcm_state_t;
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156
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157 enum {
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158 SNDRV_PCM_MMAP_OFFSET_DATA = 0x00000000,
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159 SNDRV_PCM_MMAP_OFFSET_STATUS = 0x80000000,
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160 SNDRV_PCM_MMAP_OFFSET_CONTROL = 0x81000000,
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161 };
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162
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163 typedef union _snd_pcm_sync_id {
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164 unsigned char id[16];
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165 unsigned short id16[8];
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166 unsigned int id32[4];
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167 } snd_pcm_sync_id_t;
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168
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169 typedef struct snd_pcm_info {
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170 unsigned int device;
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171 unsigned int subdevice;
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172 int stream;
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173 int card;
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174 unsigned char id[64];
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175 unsigned char name[80];
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176 unsigned char subname[32];
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177 int dev_class;
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178 int dev_subclass;
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179 unsigned int subdevices_count;
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180 unsigned int subdevices_avail;
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181 snd_pcm_sync_id_t sync;
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182 unsigned char reserved[64];
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183 } snd_pcm_info_t;
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184
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185 enum sndrv_pcm_hw_param {
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186 SNDRV_PCM_HW_PARAM_ACCESS = 0,
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187 SNDRV_PCM_HW_PARAM_FIRST_MASK = SNDRV_PCM_HW_PARAM_ACCESS,
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188 SNDRV_PCM_HW_PARAM_FORMAT,
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189 SNDRV_PCM_HW_PARAM_SUBFORMAT,
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190 SNDRV_PCM_HW_PARAM_LAST_MASK = SNDRV_PCM_HW_PARAM_SUBFORMAT,
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191
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192 SNDRV_PCM_HW_PARAM_SAMPLE_BITS = 8,
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193 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL = SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
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194 SNDRV_PCM_HW_PARAM_FRAME_BITS,
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195 SNDRV_PCM_HW_PARAM_CHANNELS,
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196 SNDRV_PCM_HW_PARAM_RATE,
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197 SNDRV_PCM_HW_PARAM_PERIOD_TIME,
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198 SNDRV_PCM_HW_PARAM_PERIOD_SIZE,
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199 SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
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200 SNDRV_PCM_HW_PARAM_PERIODS,
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201 SNDRV_PCM_HW_PARAM_BUFFER_TIME,
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202 SNDRV_PCM_HW_PARAM_BUFFER_SIZE,
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203 SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
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204 SNDRV_PCM_HW_PARAM_TICK_TIME,
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205 SNDRV_PCM_HW_PARAM_LAST_INTERVAL = SNDRV_PCM_HW_PARAM_TICK_TIME
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206 };
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207
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208 #define SNDRV_PCM_HW_PARAMS_NORESAMPLE (1<<0)
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209 #define SNDRV_PCM_HW_PARAMS_EXPORT_BUFFER (1<<1)
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210 #define SNDRV_PCM_HW_PARAMS_NO_PERIOD_WAKEUP (1<<2)
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211
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212 typedef struct snd_interval {
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213 unsigned int min, max;
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214 unsigned int openmin:1,
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215 openmax:1,
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216 integer:1,
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217 empty:1;
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218 } snd_interval_t;
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219
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220 #define SND_MASK_MAX 256
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221
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222 typedef struct snd_mask {
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223 u_int32_t bits[SND_MASK_MAX / 32];
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224 } snd_mask_t;
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225
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226 typedef struct snd_pcm_hw_params {
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227 unsigned int flags;
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228 snd_mask_t masks[SNDRV_PCM_HW_PARAM_LAST_MASK -
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229 SNDRV_PCM_HW_PARAM_FIRST_MASK + 1];
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230 snd_mask_t mres[5];
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231 snd_interval_t intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL -
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232 SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1];
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233 snd_interval_t ires[9];
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234 unsigned int rmask;
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235 unsigned int cmask;
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236 unsigned int info;
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237 unsigned int msbits;
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238 unsigned int rate_num;
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239 unsigned int rate_den;
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240 snd_pcm_uframes_t fifo_size;
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241 unsigned char reserved[64];
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242 } snd_pcm_hw_params_t;
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243
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244 typedef enum _snd_pcm_tstamp {
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245 SND_PCM_TSTAMP_NONE = 0,
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246 SND_PCM_TSTAMP_ENABLE,
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247 SND_PCM_TSTAMP_MMAP = SND_PCM_TSTAMP_ENABLE,
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248 SND_PCM_TSTAMP_LAST = SND_PCM_TSTAMP_MMAP
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249 } snd_pcm_tstamp_t;
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250
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251 typedef struct snd_pcm_sw_params {
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252 int tstamp_mode;
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253 unsigned int period_step;
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254 unsigned int sleep_min;
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255 snd_pcm_uframes_t avail_min;
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256 snd_pcm_uframes_t xfer_align;
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257 snd_pcm_uframes_t start_threshold;
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258 snd_pcm_uframes_t stop_threshold;
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259 snd_pcm_uframes_t silence_threshold;
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260 snd_pcm_uframes_t silence_size;
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261 snd_pcm_uframes_t boundary;
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262 unsigned char reserved[60];
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263 unsigned int period_event;
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264 } snd_pcm_sw_params_t;
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265
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266 /* XXX this is different from snd_pcm_channel_info_t !! */
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267 struct sndrv_pcm_channel_info {
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268 unsigned int channel;
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269 long offset;
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270 unsigned int first;
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271 unsigned int step;
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272 };
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273
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274 typedef struct snd_pcm_status {
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275 int state;
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276 struct timespec trigger_tstamp;
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277 struct timespec tstamp;
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278 snd_pcm_uframes_t appl_ptr;
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279 snd_pcm_uframes_t hw_ptr;
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280 snd_pcm_sframes_t delay;
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281 snd_pcm_uframes_t avail;
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282 snd_pcm_uframes_t avail_max;
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283 snd_pcm_uframes_t overrange;
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284 int suspended_state;
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285 unsigned char reserved[60];
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286 } snd_pcm_status_t;
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287
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288 struct snd_pcm_mmap_status {
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289 int state;
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290 int pad1;
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291 snd_pcm_uframes_t hw_ptr;
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292 struct timespec tstamp;
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293 int suspended_state;
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294 };
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295
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296 struct snd_pcm_mmap_control {
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297 snd_pcm_uframes_t appl_ptr;
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298 snd_pcm_uframes_t avail_min;
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299 };
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300
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301 #define SNDRV_PCM_SYNC_PTR_HWSYNC (1<<0)
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302 #define SNDRV_PCM_SYNC_PTR_APPL (1<<1)
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303 #define SNDRV_PCM_SYNC_PTR_AVAIL_MIN (1<<2)
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304
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305 struct snd_pcm_sync_ptr {
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306 unsigned int flags;
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307 union {
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308 struct snd_pcm_mmap_status status;
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309 unsigned char reserved[64];
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310 } s;
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311 union {
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312 struct snd_pcm_mmap_control control;
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313 unsigned char reserved[64];
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314 } c;
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315 };
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316
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317 struct snd_xferi {
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318 snd_pcm_sframes_t result;
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319 void *buf;
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320 snd_pcm_uframes_t frames;
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321 };
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322
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323 struct snd_xfern {
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324 snd_pcm_sframes_t result;
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325 void **bufs;
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326 snd_pcm_uframes_t frames;
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327 };
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328
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329
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330 enum {
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331 SNDRV_PCM_TSTAMP_TYPE_GETTIMEOFDAY = 0,
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332 SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
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333 SNDRV_PCM_TSTAMP_TYPE_LAST = SNDRV_PCM_TSTAMP_TYPE_MONOTONIC,
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334 };
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335
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336 enum {
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337 SNDRV_PCM_IOCTL_PVERSION = _IOR('A', 0x00, int),
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338 SNDRV_PCM_IOCTL_INFO = _IOR('A', 0x01, snd_pcm_info_t),
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339 SNDRV_PCM_IOCTL_TSTAMP = _IOW('A', 0x02, int),
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340 SNDRV_PCM_IOCTL_TTSTAMP = _IOW('A', 0x03, int),
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341 SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, snd_pcm_hw_params_t),
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342 SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, snd_pcm_hw_params_t),
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343 SNDRV_PCM_IOCTL_HW_FREE = _IO('A', 0x12),
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344 SNDRV_PCM_IOCTL_SW_PARAMS = _IOWR('A', 0x13, snd_pcm_sw_params_t),
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345 SNDRV_PCM_IOCTL_STATUS = _IOR('A', 0x20, snd_pcm_status_t),
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346 SNDRV_PCM_IOCTL_DELAY = _IOR('A', 0x21, snd_pcm_sframes_t),
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347 SNDRV_PCM_IOCTL_HWSYNC = _IO('A', 0x22),
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348 SNDRV_PCM_IOCTL_SYNC_PTR = _IOWR('A', 0x23, struct snd_pcm_sync_ptr),
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349 SNDRV_PCM_IOCTL_CHANNEL_INFO = _IOR('A', 0x32, struct sndrv_pcm_channel_info),
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350 SNDRV_PCM_IOCTL_PREPARE = _IO('A', 0x40),
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351 SNDRV_PCM_IOCTL_RESET = _IO('A', 0x41),
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352 SNDRV_PCM_IOCTL_START = _IO('A', 0x42),
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353 SNDRV_PCM_IOCTL_DROP = _IO('A', 0x43),
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354 SNDRV_PCM_IOCTL_DRAIN = _IO('A', 0x44),
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355 SNDRV_PCM_IOCTL_PAUSE = _IOW('A', 0x45, int),
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356 SNDRV_PCM_IOCTL_REWIND = _IOW('A', 0x46, snd_pcm_uframes_t),
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357 SNDRV_PCM_IOCTL_RESUME = _IO('A', 0x47),
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358 SNDRV_PCM_IOCTL_XRUN = _IO('A', 0x48),
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359 SNDRV_PCM_IOCTL_FORWARD = _IOW('A', 0x49, snd_pcm_uframes_t),
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360 SNDRV_PCM_IOCTL_WRITEI_FRAMES = _IOW('A', 0x50, struct snd_xferi),
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361 SNDRV_PCM_IOCTL_READI_FRAMES = _IOR('A', 0x51, struct snd_xferi),
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362 SNDRV_PCM_IOCTL_WRITEN_FRAMES = _IOW('A', 0x52, struct snd_xfern),
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363 SNDRV_PCM_IOCTL_READN_FRAMES = _IOR('A', 0x53, struct snd_xfern),
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364 SNDRV_PCM_IOCTL_LINK = _IOW('A', 0x60, int),
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365 SNDRV_PCM_IOCTL_UNLINK = _IO('A', 0x61),
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366 };
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367
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diff changeset
368 /* Trick to make alsa-lib/acinclude.m4 happy */
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369 #define SNDRV_PCM_IOCTL_REWIND SNDRV_PCM_IOCTL_REWIND
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370
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diff changeset
371 /* Timer interface */
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372 #define SNDRV_TIMER_VERSION SNDRV_PROTOCOL_VERSION(2, 0, 5)
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373
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374 typedef enum _snd_timer_class {
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375 SND_TIMER_CLASS_NONE = -1,
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376 SND_TIMER_CLASS_SLAVE = 0,
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diff changeset
377 SND_TIMER_CLASS_GLOBAL,
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diff changeset
378 SND_TIMER_CLASS_CARD,
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diff changeset
379 SND_TIMER_CLASS_PCM,
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380 SND_TIMER_CLASS_LAST = SND_TIMER_CLASS_PCM
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381 } snd_timer_class_t;
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diff changeset
382
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diff changeset
383 typedef enum _snd_timer_slave_class {
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384 SND_TIMER_SCLASS_NONE = 0,
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diff changeset
385 SND_TIMER_SCLASS_APPLICATION,
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diff changeset
386 SND_TIMER_SCLASS_SEQUENCER,
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diff changeset
387 SND_TIMER_SCLASS_OSS_SEQUENCER,
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diff changeset
388 SND_TIMER_SCLASS_LAST = SND_TIMER_SCLASS_OSS_SEQUENCER
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389 } snd_timer_slave_class_t;
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diff changeset
390
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diff changeset
391 /* global timers (device member) */
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diff changeset
392 #define SND_TIMER_GLOBAL_SYSTEM 0
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diff changeset
393 #define SND_TIMER_GLOBAL_RTC 1
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diff changeset
394 #define SND_TIMER_GLOBAL_HPET 2
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diff changeset
395 #define SND_TIMER_GLOBAL_HRTIMER 3
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diff changeset
396
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diff changeset
397 /* info flags */
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diff changeset
398 #define SNDRV_TIMER_FLG_SLAVE (1<<0) /* cannot be controlled */
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diff changeset
399
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diff changeset
400 typedef struct snd_timer_id {
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diff changeset
401 int dev_class;
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diff changeset
402 int dev_sclass;
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diff changeset
403 int card;
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diff changeset
404 int device;
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diff changeset
405 int subdevice;
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diff changeset
406 } snd_timer_id_t;
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diff changeset
407
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diff changeset
408 typedef struct snd_timer_ginfo {
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diff changeset
409 snd_timer_id_t tid;
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diff changeset
410 unsigned int flags;
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diff changeset
411 int card;
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diff changeset
412 unsigned char id[64];
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diff changeset
413 unsigned char name[80];
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parents:
diff changeset
414 unsigned long reserved0;
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diff changeset
415 unsigned long resolution;
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diff changeset
416 unsigned long resolution_min;
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diff changeset
417 unsigned long resolution_max;
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diff changeset
418 unsigned int clients;
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diff changeset
419 unsigned char reserved[32];
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diff changeset
420 } snd_timer_ginfo_t;
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diff changeset
421
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diff changeset
422 typedef struct snd_timer_gparams {
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diff changeset
423 snd_timer_id_t tid;
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parents:
diff changeset
424 unsigned long period_num;
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diff changeset
425 unsigned long period_den;
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diff changeset
426 unsigned char reserved[32];
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427 } snd_timer_gparams_t;
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428
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429 typedef struct snd_timer_gstatus {
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430 snd_timer_id_t tid;
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431 unsigned long resolution;
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432 unsigned long resolution_num;
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433 unsigned long resolution_den;
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434 unsigned char reserved[32];
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435 } snd_timer_gstatus_t;
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436
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437 typedef struct snd_timer_select {
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438 snd_timer_id_t id;
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439 unsigned char reserved[32];
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440 } snd_timer_select_t;
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441
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442 typedef struct snd_timer_info {
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443 unsigned int flags;
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444 int card;
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445 unsigned char id[64];
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446 unsigned char name[80];
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447 unsigned long reserved0;
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448 unsigned long resolution;
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449 unsigned char reserved[64];
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450 } snd_timer_info_t;
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451
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452 #define SNDRV_TIMER_PSFLG_AUTO (1<<0)
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453 #define SNDRV_TIMER_PSFLG_EXCLUSIVE (1<<1)
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454 #define SNDRV_TIMER_PSFLG_EARLY_EVENT (1<<2)
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455
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456 typedef struct snd_timer_params {
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457 unsigned int flags;
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458 unsigned int ticks;
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459 unsigned int queue_size;
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460 unsigned int reserved0;
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461 unsigned int filter;
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462 unsigned char reserved[60];
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463 } snd_timer_params_t;
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464
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465 typedef struct snd_timer_status {
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466 struct timespec tstamp;
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467 unsigned int resolution;
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468 unsigned int lost;
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469 unsigned int overrun;
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470 unsigned int queue;
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471 unsigned char reserved[64];
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472 } snd_timer_status_t;
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473
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474 enum {
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475 SNDRV_TIMER_IOCTL_PVERSION = _IOR('T', 0x00, int),
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476 SNDRV_TIMER_IOCTL_NEXT_DEVICE = _IOWR('T', 0x01, snd_timer_id_t),
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477 SNDRV_TIMER_IOCTL_TREAD = _IOW('T', 0x02, int),
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478 SNDRV_TIMER_IOCTL_GINFO = _IOWR('T', 0x03, snd_timer_ginfo_t),
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479 SNDRV_TIMER_IOCTL_GPARAMS = _IOW('T', 0x04, snd_timer_gparams_t),
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480 SNDRV_TIMER_IOCTL_GSTATUS = _IOWR('T', 0x05, snd_timer_gstatus_t),
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481 SNDRV_TIMER_IOCTL_SELECT = _IOW('T', 0x10, snd_timer_select_t),
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482 SNDRV_TIMER_IOCTL_INFO = _IOR('T', 0x11, snd_timer_info_t),
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483 SNDRV_TIMER_IOCTL_PARAMS = _IOW('T', 0x12, snd_timer_params_t),
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484 SNDRV_TIMER_IOCTL_STATUS = _IOR('T', 0x14, snd_timer_status_t),
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485 /* The following four ioctls are changed since 1.0.9 due to confliction */
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486 SNDRV_TIMER_IOCTL_START = _IO('T', 0xa0),
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487 SNDRV_TIMER_IOCTL_STOP = _IO('T', 0xa1),
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488 SNDRV_TIMER_IOCTL_CONTINUE = _IO('T', 0xa2),
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489 SNDRV_TIMER_IOCTL_PAUSE = _IO('T', 0xa3),
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490 };
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491
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492 typedef struct _snd_timer_read {
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493 unsigned int resolution;
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494 unsigned int ticks;
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495 } snd_timer_read_t;
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496
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497 typedef enum _snd_timer_event {
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498 SND_TIMER_EVENT_RESOLUTION = 0,
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499 SND_TIMER_EVENT_TICK,
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500 SND_TIMER_EVENT_START,
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501 SND_TIMER_EVENT_STOP,
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502 SND_TIMER_EVENT_CONTINUE,
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503 SND_TIMER_EVENT_PAUSE,
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504 SND_TIMER_EVENT_EARLY,
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505 SND_TIMER_EVENT_SUSPEND,
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506 SND_TIMER_EVENT_RESUME,
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507 SND_TIMER_EVENT_MSTART = SND_TIMER_EVENT_START + 10,
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508 SND_TIMER_EVENT_MSTOP = SND_TIMER_EVENT_STOP + 10,
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509 SND_TIMER_EVENT_MCONTINUE = SND_TIMER_EVENT_CONTINUE + 10,
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510 SND_TIMER_EVENT_MPAUSE = SND_TIMER_EVENT_PAUSE + 10,
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511 SND_TIMER_EVENT_MSUSPEND = SND_TIMER_EVENT_SUSPEND + 10,
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512 SND_TIMER_EVENT_MRESUME = SND_TIMER_EVENT_RESUME + 10
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513 } snd_timer_event_t;
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514
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515 typedef struct timeval snd_timestamp_t;
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516 typedef struct timespec snd_htimestamp_t;
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517
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518 typedef struct _snd_timer_tread {
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519 snd_timer_event_t event;
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520 snd_htimestamp_t tstamp;
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521 unsigned int val;
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522 } snd_timer_tread_t;
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523
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524 typedef snd_mask_t snd_pcm_access_mask_t;
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525 typedef snd_mask_t snd_pcm_format_mask_t;
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526 typedef snd_mask_t snd_pcm_subformat_mask_t;
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527 #define SND_PCM_NONBLOCK 0x00000001
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528
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529 #endif /* __ALSA_ASOUND_H */