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jpayne@69
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1 /**
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jpayne@69
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2 * \file include/control.h
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jpayne@69
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3 * \brief Application interface library for the ALSA driver
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jpayne@69
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4 * \author Jaroslav Kysela <perex@perex.cz>
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jpayne@69
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5 * \author Abramo Bagnara <abramo@alsa-project.org>
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jpayne@69
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6 * \author Takashi Iwai <tiwai@suse.de>
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jpayne@69
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7 * \date 1998-2001
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8 *
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9 * Application interface library for the ALSA driver
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10 */
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jpayne@69
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11 /*
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12 * This library is free software; you can redistribute it and/or modify
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jpayne@69
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13 * it under the terms of the GNU Lesser General Public License as
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14 * published by the Free Software Foundation; either version 2.1 of
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15 * the License, or (at your option) any later version.
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16 *
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17 * This program is distributed in the hope that it will be useful,
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jpayne@69
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18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 * GNU Lesser 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 Lesser General Public
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jpayne@69
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23 * License along with this library; if not, write to the Free Software
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jpayne@69
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24 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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25 *
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26 */
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27
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28 #ifndef __ALSA_CONTROL_H
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29 #define __ALSA_CONTROL_H
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30
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31 #ifdef __cplusplus
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32 extern "C" {
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33 #endif
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34
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35 /**
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jpayne@69
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36 * \defgroup Control Control Interface
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jpayne@69
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37 * The control interface.
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38 * See \ref control page for more details.
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39 * \{
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40 */
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41
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jpayne@69
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42 /** dlsym version for interface entry callback */
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43 #define SND_CONTROL_DLSYM_VERSION _dlsym_control_001
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44
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jpayne@69
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45 /** IEC958 structure */
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jpayne@69
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46 typedef struct snd_aes_iec958 {
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jpayne@69
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47 unsigned char status[24]; /**< AES/IEC958 channel status bits */
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jpayne@69
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48 unsigned char subcode[147]; /**< AES/IEC958 subcode bits */
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49 unsigned char pad; /**< nothing */
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50 unsigned char dig_subframe[4]; /**< AES/IEC958 subframe bits */
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jpayne@69
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51 } snd_aes_iec958_t;
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52
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53 /** CTL card info container */
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54 typedef struct _snd_ctl_card_info snd_ctl_card_info_t;
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55
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jpayne@69
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56 /** CTL element identifier container */
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57 typedef struct _snd_ctl_elem_id snd_ctl_elem_id_t;
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58
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59 /** CTL element identifier list container */
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60 typedef struct _snd_ctl_elem_list snd_ctl_elem_list_t;
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61
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jpayne@69
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62 /** CTL element info container */
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63 typedef struct _snd_ctl_elem_info snd_ctl_elem_info_t;
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64
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65 /** CTL element value container */
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66 typedef struct _snd_ctl_elem_value snd_ctl_elem_value_t;
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67
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68 /** CTL event container */
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69 typedef struct _snd_ctl_event snd_ctl_event_t;
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70
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71 /** CTL element type */
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72 typedef enum _snd_ctl_elem_type {
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73 /** Invalid type */
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74 SND_CTL_ELEM_TYPE_NONE = 0,
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75 /** Boolean contents */
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jpayne@69
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76 SND_CTL_ELEM_TYPE_BOOLEAN,
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77 /** Integer contents */
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jpayne@69
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78 SND_CTL_ELEM_TYPE_INTEGER,
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79 /** Enumerated contents */
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80 SND_CTL_ELEM_TYPE_ENUMERATED,
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81 /** Bytes contents */
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82 SND_CTL_ELEM_TYPE_BYTES,
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83 /** IEC958 (S/PDIF) setting content */
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84 SND_CTL_ELEM_TYPE_IEC958,
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85 /** 64-bit integer contents */
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86 SND_CTL_ELEM_TYPE_INTEGER64,
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87 SND_CTL_ELEM_TYPE_LAST = SND_CTL_ELEM_TYPE_INTEGER64
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88 } snd_ctl_elem_type_t;
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89
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90 /** CTL related interface */
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91 typedef enum _snd_ctl_elem_iface {
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92 /** Card level */
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93 SND_CTL_ELEM_IFACE_CARD = 0,
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94 /** Hardware dependent device */
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95 SND_CTL_ELEM_IFACE_HWDEP,
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96 /** Mixer */
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97 SND_CTL_ELEM_IFACE_MIXER,
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98 /** PCM */
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99 SND_CTL_ELEM_IFACE_PCM,
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100 /** RawMidi */
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101 SND_CTL_ELEM_IFACE_RAWMIDI,
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102 /** Timer */
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103 SND_CTL_ELEM_IFACE_TIMER,
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104 /** Sequencer */
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105 SND_CTL_ELEM_IFACE_SEQUENCER,
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106 SND_CTL_ELEM_IFACE_LAST = SND_CTL_ELEM_IFACE_SEQUENCER
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107 } snd_ctl_elem_iface_t;
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108
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109 /** Event class */
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110 typedef enum _snd_ctl_event_type {
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111 /** Elements related event */
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112 SND_CTL_EVENT_ELEM = 0,
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113 SND_CTL_EVENT_LAST = SND_CTL_EVENT_ELEM
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114 }snd_ctl_event_type_t;
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115
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116 /** Element has been removed (Warning: test this first and if set don't
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117 * test the other masks) \hideinitializer */
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118 #define SND_CTL_EVENT_MASK_REMOVE (~0U)
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119 /** Element value has been changed \hideinitializer */
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120 #define SND_CTL_EVENT_MASK_VALUE (1<<0)
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jpayne@69
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121 /** Element info has been changed \hideinitializer */
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122 #define SND_CTL_EVENT_MASK_INFO (1<<1)
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jpayne@69
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123 /** Element has been added \hideinitializer */
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124 #define SND_CTL_EVENT_MASK_ADD (1<<2)
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jpayne@69
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125 /** Element's TLV value has been changed \hideinitializer */
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126 #define SND_CTL_EVENT_MASK_TLV (1<<3)
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127
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128 /** CTL name helper */
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129 #define SND_CTL_NAME_NONE ""
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jpayne@69
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130 /** CTL name helper */
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131 #define SND_CTL_NAME_PLAYBACK "Playback "
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jpayne@69
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132 /** CTL name helper */
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133 #define SND_CTL_NAME_CAPTURE "Capture "
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134
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135 /** CTL name helper */
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136 #define SND_CTL_NAME_IEC958_NONE ""
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jpayne@69
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137 /** CTL name helper */
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jpayne@69
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138 #define SND_CTL_NAME_IEC958_SWITCH "Switch"
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jpayne@69
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139 /** CTL name helper */
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140 #define SND_CTL_NAME_IEC958_VOLUME "Volume"
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jpayne@69
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141 /** CTL name helper */
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jpayne@69
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142 #define SND_CTL_NAME_IEC958_DEFAULT "Default"
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jpayne@69
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143 /** CTL name helper */
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jpayne@69
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144 #define SND_CTL_NAME_IEC958_MASK "Mask"
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jpayne@69
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145 /** CTL name helper */
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jpayne@69
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146 #define SND_CTL_NAME_IEC958_CON_MASK "Con Mask"
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jpayne@69
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147 /** CTL name helper */
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jpayne@69
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148 #define SND_CTL_NAME_IEC958_PRO_MASK "Pro Mask"
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jpayne@69
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149 /** CTL name helper */
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150 #define SND_CTL_NAME_IEC958_PCM_STREAM "PCM Stream"
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jpayne@69
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151 /** Element name for IEC958 (S/PDIF) */
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152 #define SND_CTL_NAME_IEC958(expl,direction,what) "IEC958 " expl SND_CTL_NAME_##direction SND_CTL_NAME_IEC958_##what
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153
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jpayne@69
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154 /** Mask for the major Power State identifier */
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155 #define SND_CTL_POWER_MASK 0xff00
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jpayne@69
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156 /** ACPI/PCI Power State D0 */
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jpayne@69
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157 #define SND_CTL_POWER_D0 0x0000
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jpayne@69
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158 /** ACPI/PCI Power State D1 */
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159 #define SND_CTL_POWER_D1 0x0100
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jpayne@69
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160 /** ACPI/PCI Power State D2 */
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161 #define SND_CTL_POWER_D2 0x0200
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jpayne@69
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162 /** ACPI/PCI Power State D3 */
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163 #define SND_CTL_POWER_D3 0x0300
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164 /** ACPI/PCI Power State D3hot */
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165 #define SND_CTL_POWER_D3hot (SND_CTL_POWER_D3|0x0000)
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jpayne@69
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166 /** ACPI/PCI Power State D3cold */
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167 #define SND_CTL_POWER_D3cold (SND_CTL_POWER_D3|0x0001)
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168
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jpayne@69
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169 /** TLV type - Container */
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170 #define SND_CTL_TLVT_CONTAINER 0x0000
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jpayne@69
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171 /** TLV type - basic dB scale */
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172 #define SND_CTL_TLVT_DB_SCALE 0x0001
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jpayne@69
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173 /** TLV type - linear volume */
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jpayne@69
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174 #define SND_CTL_TLVT_DB_LINEAR 0x0002
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jpayne@69
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175 /** TLV type - dB range container */
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jpayne@69
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176 #define SND_CTL_TLVT_DB_RANGE 0x0003
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jpayne@69
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177 /** TLV type - dB scale specified by min/max values */
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178 #define SND_CTL_TLVT_DB_MINMAX 0x0004
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jpayne@69
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179 /** TLV type - dB scale specified by min/max values (with mute) */
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180 #define SND_CTL_TLVT_DB_MINMAX_MUTE 0x0005
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181
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182 /** Mute state */
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183 #define SND_CTL_TLV_DB_GAIN_MUTE -9999999
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184
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185 /** TLV type - fixed channel map positions */
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186 #define SND_CTL_TLVT_CHMAP_FIXED 0x00101
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jpayne@69
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187 /** TLV type - freely swappable channel map positions */
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188 #define SND_CTL_TLVT_CHMAP_VAR 0x00102
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jpayne@69
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189 /** TLV type - pair-wise swappable channel map positions */
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190 #define SND_CTL_TLVT_CHMAP_PAIRED 0x00103
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191
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192 /** CTL type */
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193 typedef enum _snd_ctl_type {
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194 /** Kernel level CTL */
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195 SND_CTL_TYPE_HW,
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196 /** Shared memory client CTL */
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197 SND_CTL_TYPE_SHM,
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198 /** INET client CTL (not yet implemented) */
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199 SND_CTL_TYPE_INET,
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200 /** External control plugin */
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201 SND_CTL_TYPE_EXT
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202 } snd_ctl_type_t;
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203
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204 /** Non blocking mode (flag for open mode) \hideinitializer */
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205 #define SND_CTL_NONBLOCK 0x0001
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206
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207 /** Async notification (flag for open mode) \hideinitializer */
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208 #define SND_CTL_ASYNC 0x0002
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209
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210 /** Read only (flag for open mode) \hideinitializer */
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211 #define SND_CTL_READONLY 0x0004
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212
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213 /** CTL handle */
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214 typedef struct _snd_ctl snd_ctl_t;
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215
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216 /** Don't destroy the ctl handle when close */
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217 #define SND_SCTL_NOFREE 0x0001
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218
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219 /** SCTL type */
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220 typedef struct _snd_sctl snd_sctl_t;
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221
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222 int snd_card_load(int card);
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223 int snd_card_next(int *card);
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224 int snd_card_get_index(const char *name);
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225 int snd_card_get_name(int card, char **name);
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226 int snd_card_get_longname(int card, char **name);
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227
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228 int snd_device_name_hint(int card, const char *iface, void ***hints);
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229 int snd_device_name_free_hint(void **hints);
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230 char *snd_device_name_get_hint(const void *hint, const char *id);
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231
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232 int snd_ctl_open(snd_ctl_t **ctl, const char *name, int mode);
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233 int snd_ctl_open_lconf(snd_ctl_t **ctl, const char *name, int mode, snd_config_t *lconf);
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234 int snd_ctl_open_fallback(snd_ctl_t **ctl, snd_config_t *root, const char *name, const char *orig_name, int mode);
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jpayne@69
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235 int snd_ctl_close(snd_ctl_t *ctl);
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236 int snd_ctl_nonblock(snd_ctl_t *ctl, int nonblock);
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237 static __inline__ int snd_ctl_abort(snd_ctl_t *ctl) { return snd_ctl_nonblock(ctl, 2); }
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238 int snd_async_add_ctl_handler(snd_async_handler_t **handler, snd_ctl_t *ctl,
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239 snd_async_callback_t callback, void *private_data);
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240 snd_ctl_t *snd_async_handler_get_ctl(snd_async_handler_t *handler);
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241 int snd_ctl_poll_descriptors_count(snd_ctl_t *ctl);
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242 int snd_ctl_poll_descriptors(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int space);
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243 int snd_ctl_poll_descriptors_revents(snd_ctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
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jpayne@69
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244 int snd_ctl_subscribe_events(snd_ctl_t *ctl, int subscribe);
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245 int snd_ctl_card_info(snd_ctl_t *ctl, snd_ctl_card_info_t *info);
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246 int snd_ctl_elem_list(snd_ctl_t *ctl, snd_ctl_elem_list_t *list);
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jpayne@69
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247 int snd_ctl_elem_info(snd_ctl_t *ctl, snd_ctl_elem_info_t *info);
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248 int snd_ctl_elem_read(snd_ctl_t *ctl, snd_ctl_elem_value_t *data);
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249 int snd_ctl_elem_write(snd_ctl_t *ctl, snd_ctl_elem_value_t *data);
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jpayne@69
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250 int snd_ctl_elem_lock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
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jpayne@69
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251 int snd_ctl_elem_unlock(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
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252 int snd_ctl_elem_tlv_read(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
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253 unsigned int *tlv, unsigned int tlv_size);
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254 int snd_ctl_elem_tlv_write(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
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255 const unsigned int *tlv);
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256 int snd_ctl_elem_tlv_command(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
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257 const unsigned int *tlv);
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258 #ifdef __ALSA_HWDEP_H
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259 int snd_ctl_hwdep_next_device(snd_ctl_t *ctl, int * device);
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260 int snd_ctl_hwdep_info(snd_ctl_t *ctl, snd_hwdep_info_t * info);
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261 #endif
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jpayne@69
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262 #ifdef __ALSA_PCM_H
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263 int snd_ctl_pcm_next_device(snd_ctl_t *ctl, int *device);
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264 int snd_ctl_pcm_info(snd_ctl_t *ctl, snd_pcm_info_t * info);
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265 int snd_ctl_pcm_prefer_subdevice(snd_ctl_t *ctl, int subdev);
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266 #endif
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267 #ifdef __ALSA_RAWMIDI_H
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268 int snd_ctl_rawmidi_next_device(snd_ctl_t *ctl, int * device);
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269 int snd_ctl_rawmidi_info(snd_ctl_t *ctl, snd_rawmidi_info_t * info);
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270 int snd_ctl_rawmidi_prefer_subdevice(snd_ctl_t *ctl, int subdev);
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271 #endif
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272 int snd_ctl_set_power_state(snd_ctl_t *ctl, unsigned int state);
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273 int snd_ctl_get_power_state(snd_ctl_t *ctl, unsigned int *state);
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274
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275 int snd_ctl_read(snd_ctl_t *ctl, snd_ctl_event_t *event);
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276 int snd_ctl_wait(snd_ctl_t *ctl, int timeout);
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277 const char *snd_ctl_name(snd_ctl_t *ctl);
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278 snd_ctl_type_t snd_ctl_type(snd_ctl_t *ctl);
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279
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280 const char *snd_ctl_elem_type_name(snd_ctl_elem_type_t type);
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281 const char *snd_ctl_elem_iface_name(snd_ctl_elem_iface_t iface);
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282 const char *snd_ctl_event_type_name(snd_ctl_event_type_t type);
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283
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284 unsigned int snd_ctl_event_elem_get_mask(const snd_ctl_event_t *obj);
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285 unsigned int snd_ctl_event_elem_get_numid(const snd_ctl_event_t *obj);
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286 void snd_ctl_event_elem_get_id(const snd_ctl_event_t *obj, snd_ctl_elem_id_t *ptr);
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287 snd_ctl_elem_iface_t snd_ctl_event_elem_get_interface(const snd_ctl_event_t *obj);
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288 unsigned int snd_ctl_event_elem_get_device(const snd_ctl_event_t *obj);
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289 unsigned int snd_ctl_event_elem_get_subdevice(const snd_ctl_event_t *obj);
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290 const char *snd_ctl_event_elem_get_name(const snd_ctl_event_t *obj);
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291 unsigned int snd_ctl_event_elem_get_index(const snd_ctl_event_t *obj);
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292
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293 int snd_ctl_elem_list_alloc_space(snd_ctl_elem_list_t *obj, unsigned int entries);
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294 void snd_ctl_elem_list_free_space(snd_ctl_elem_list_t *obj);
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295
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296 char *snd_ctl_ascii_elem_id_get(snd_ctl_elem_id_t *id);
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297 int snd_ctl_ascii_elem_id_parse(snd_ctl_elem_id_t *dst, const char *str);
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298 int snd_ctl_ascii_value_parse(snd_ctl_t *handle,
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299 snd_ctl_elem_value_t *dst,
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300 snd_ctl_elem_info_t *info,
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301 const char *value);
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302
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303 size_t snd_ctl_elem_id_sizeof(void);
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304 /** \hideinitializer
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305 * \brief allocate an invalid #snd_ctl_elem_id_t using standard alloca
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306 * \param ptr returned pointer
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307 */
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308 #define snd_ctl_elem_id_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_id)
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309 int snd_ctl_elem_id_malloc(snd_ctl_elem_id_t **ptr);
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310 void snd_ctl_elem_id_free(snd_ctl_elem_id_t *obj);
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311 void snd_ctl_elem_id_clear(snd_ctl_elem_id_t *obj);
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312 void snd_ctl_elem_id_copy(snd_ctl_elem_id_t *dst, const snd_ctl_elem_id_t *src);
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313 unsigned int snd_ctl_elem_id_get_numid(const snd_ctl_elem_id_t *obj);
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314 snd_ctl_elem_iface_t snd_ctl_elem_id_get_interface(const snd_ctl_elem_id_t *obj);
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315 unsigned int snd_ctl_elem_id_get_device(const snd_ctl_elem_id_t *obj);
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316 unsigned int snd_ctl_elem_id_get_subdevice(const snd_ctl_elem_id_t *obj);
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317 const char *snd_ctl_elem_id_get_name(const snd_ctl_elem_id_t *obj);
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318 unsigned int snd_ctl_elem_id_get_index(const snd_ctl_elem_id_t *obj);
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319 void snd_ctl_elem_id_set_numid(snd_ctl_elem_id_t *obj, unsigned int val);
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320 void snd_ctl_elem_id_set_interface(snd_ctl_elem_id_t *obj, snd_ctl_elem_iface_t val);
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321 void snd_ctl_elem_id_set_device(snd_ctl_elem_id_t *obj, unsigned int val);
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322 void snd_ctl_elem_id_set_subdevice(snd_ctl_elem_id_t *obj, unsigned int val);
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323 void snd_ctl_elem_id_set_name(snd_ctl_elem_id_t *obj, const char *val);
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324 void snd_ctl_elem_id_set_index(snd_ctl_elem_id_t *obj, unsigned int val);
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325
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326 size_t snd_ctl_card_info_sizeof(void);
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327 /** \hideinitializer
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328 * \brief allocate an invalid #snd_ctl_card_info_t using standard alloca
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329 * \param ptr returned pointer
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330 */
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331 #define snd_ctl_card_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_card_info)
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332 int snd_ctl_card_info_malloc(snd_ctl_card_info_t **ptr);
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333 void snd_ctl_card_info_free(snd_ctl_card_info_t *obj);
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334 void snd_ctl_card_info_clear(snd_ctl_card_info_t *obj);
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335 void snd_ctl_card_info_copy(snd_ctl_card_info_t *dst, const snd_ctl_card_info_t *src);
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336 int snd_ctl_card_info_get_card(const snd_ctl_card_info_t *obj);
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337 const char *snd_ctl_card_info_get_id(const snd_ctl_card_info_t *obj);
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338 const char *snd_ctl_card_info_get_driver(const snd_ctl_card_info_t *obj);
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339 const char *snd_ctl_card_info_get_name(const snd_ctl_card_info_t *obj);
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340 const char *snd_ctl_card_info_get_longname(const snd_ctl_card_info_t *obj);
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341 const char *snd_ctl_card_info_get_mixername(const snd_ctl_card_info_t *obj);
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342 const char *snd_ctl_card_info_get_components(const snd_ctl_card_info_t *obj);
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343
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344 size_t snd_ctl_event_sizeof(void);
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345 /** \hideinitializer
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346 * \brief allocate an invalid #snd_ctl_event_t using standard alloca
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347 * \param ptr returned pointer
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348 */
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349 #define snd_ctl_event_alloca(ptr) __snd_alloca(ptr, snd_ctl_event)
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350 int snd_ctl_event_malloc(snd_ctl_event_t **ptr);
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351 void snd_ctl_event_free(snd_ctl_event_t *obj);
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352 void snd_ctl_event_clear(snd_ctl_event_t *obj);
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353 void snd_ctl_event_copy(snd_ctl_event_t *dst, const snd_ctl_event_t *src);
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354 snd_ctl_event_type_t snd_ctl_event_get_type(const snd_ctl_event_t *obj);
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355
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356 size_t snd_ctl_elem_list_sizeof(void);
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357 /** \hideinitializer
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358 * \brief allocate an invalid #snd_ctl_elem_list_t using standard alloca
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359 * \param ptr returned pointer
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360 */
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361 #define snd_ctl_elem_list_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_list)
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362 int snd_ctl_elem_list_malloc(snd_ctl_elem_list_t **ptr);
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363 void snd_ctl_elem_list_free(snd_ctl_elem_list_t *obj);
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364 void snd_ctl_elem_list_clear(snd_ctl_elem_list_t *obj);
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365 void snd_ctl_elem_list_copy(snd_ctl_elem_list_t *dst, const snd_ctl_elem_list_t *src);
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366 void snd_ctl_elem_list_set_offset(snd_ctl_elem_list_t *obj, unsigned int val);
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367 unsigned int snd_ctl_elem_list_get_used(const snd_ctl_elem_list_t *obj);
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368 unsigned int snd_ctl_elem_list_get_count(const snd_ctl_elem_list_t *obj);
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369 void snd_ctl_elem_list_get_id(const snd_ctl_elem_list_t *obj, unsigned int idx, snd_ctl_elem_id_t *ptr);
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370 unsigned int snd_ctl_elem_list_get_numid(const snd_ctl_elem_list_t *obj, unsigned int idx);
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371 snd_ctl_elem_iface_t snd_ctl_elem_list_get_interface(const snd_ctl_elem_list_t *obj, unsigned int idx);
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372 unsigned int snd_ctl_elem_list_get_device(const snd_ctl_elem_list_t *obj, unsigned int idx);
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373 unsigned int snd_ctl_elem_list_get_subdevice(const snd_ctl_elem_list_t *obj, unsigned int idx);
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374 const char *snd_ctl_elem_list_get_name(const snd_ctl_elem_list_t *obj, unsigned int idx);
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375 unsigned int snd_ctl_elem_list_get_index(const snd_ctl_elem_list_t *obj, unsigned int idx);
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376
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377 size_t snd_ctl_elem_info_sizeof(void);
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378 /** \hideinitializer
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379 * \brief allocate an invalid #snd_ctl_elem_info_t using standard alloca
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380 * \param ptr returned pointer
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381 */
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382 #define snd_ctl_elem_info_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_info)
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383 int snd_ctl_elem_info_malloc(snd_ctl_elem_info_t **ptr);
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384 void snd_ctl_elem_info_free(snd_ctl_elem_info_t *obj);
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385 void snd_ctl_elem_info_clear(snd_ctl_elem_info_t *obj);
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386 void snd_ctl_elem_info_copy(snd_ctl_elem_info_t *dst, const snd_ctl_elem_info_t *src);
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387 snd_ctl_elem_type_t snd_ctl_elem_info_get_type(const snd_ctl_elem_info_t *obj);
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388 int snd_ctl_elem_info_is_readable(const snd_ctl_elem_info_t *obj);
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389 int snd_ctl_elem_info_is_writable(const snd_ctl_elem_info_t *obj);
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390 int snd_ctl_elem_info_is_volatile(const snd_ctl_elem_info_t *obj);
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391 int snd_ctl_elem_info_is_inactive(const snd_ctl_elem_info_t *obj);
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392 int snd_ctl_elem_info_is_locked(const snd_ctl_elem_info_t *obj);
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393 int snd_ctl_elem_info_is_tlv_readable(const snd_ctl_elem_info_t *obj);
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394 int snd_ctl_elem_info_is_tlv_writable(const snd_ctl_elem_info_t *obj);
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395 int snd_ctl_elem_info_is_tlv_commandable(const snd_ctl_elem_info_t *obj);
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396 int snd_ctl_elem_info_is_owner(const snd_ctl_elem_info_t *obj);
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397 int snd_ctl_elem_info_is_user(const snd_ctl_elem_info_t *obj);
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398 pid_t snd_ctl_elem_info_get_owner(const snd_ctl_elem_info_t *obj);
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399 unsigned int snd_ctl_elem_info_get_count(const snd_ctl_elem_info_t *obj);
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400 long snd_ctl_elem_info_get_min(const snd_ctl_elem_info_t *obj);
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401 long snd_ctl_elem_info_get_max(const snd_ctl_elem_info_t *obj);
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402 long snd_ctl_elem_info_get_step(const snd_ctl_elem_info_t *obj);
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403 long long snd_ctl_elem_info_get_min64(const snd_ctl_elem_info_t *obj);
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404 long long snd_ctl_elem_info_get_max64(const snd_ctl_elem_info_t *obj);
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405 long long snd_ctl_elem_info_get_step64(const snd_ctl_elem_info_t *obj);
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406 unsigned int snd_ctl_elem_info_get_items(const snd_ctl_elem_info_t *obj);
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407 void snd_ctl_elem_info_set_item(snd_ctl_elem_info_t *obj, unsigned int val);
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408 const char *snd_ctl_elem_info_get_item_name(const snd_ctl_elem_info_t *obj);
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409 int snd_ctl_elem_info_get_dimensions(const snd_ctl_elem_info_t *obj);
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410 int snd_ctl_elem_info_get_dimension(const snd_ctl_elem_info_t *obj, unsigned int idx);
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411 int snd_ctl_elem_info_set_dimension(snd_ctl_elem_info_t *info,
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412 const int dimension[4]);
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413 void snd_ctl_elem_info_get_id(const snd_ctl_elem_info_t *obj, snd_ctl_elem_id_t *ptr);
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414 unsigned int snd_ctl_elem_info_get_numid(const snd_ctl_elem_info_t *obj);
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415 snd_ctl_elem_iface_t snd_ctl_elem_info_get_interface(const snd_ctl_elem_info_t *obj);
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416 unsigned int snd_ctl_elem_info_get_device(const snd_ctl_elem_info_t *obj);
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417 unsigned int snd_ctl_elem_info_get_subdevice(const snd_ctl_elem_info_t *obj);
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418 const char *snd_ctl_elem_info_get_name(const snd_ctl_elem_info_t *obj);
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419 unsigned int snd_ctl_elem_info_get_index(const snd_ctl_elem_info_t *obj);
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420 void snd_ctl_elem_info_set_id(snd_ctl_elem_info_t *obj, const snd_ctl_elem_id_t *ptr);
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421 void snd_ctl_elem_info_set_numid(snd_ctl_elem_info_t *obj, unsigned int val);
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422 void snd_ctl_elem_info_set_interface(snd_ctl_elem_info_t *obj, snd_ctl_elem_iface_t val);
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423 void snd_ctl_elem_info_set_device(snd_ctl_elem_info_t *obj, unsigned int val);
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424 void snd_ctl_elem_info_set_subdevice(snd_ctl_elem_info_t *obj, unsigned int val);
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425 void snd_ctl_elem_info_set_name(snd_ctl_elem_info_t *obj, const char *val);
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426 void snd_ctl_elem_info_set_index(snd_ctl_elem_info_t *obj, unsigned int val);
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427
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428 int snd_ctl_add_integer_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
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429 unsigned int element_count,
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430 unsigned int member_count,
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431 long min, long max, long step);
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432 int snd_ctl_add_integer64_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
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433 unsigned int element_count,
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434 unsigned int member_count,
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435 long long min, long long max,
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436 long long step);
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437 int snd_ctl_add_boolean_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
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438 unsigned int element_count,
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439 unsigned int member_count);
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440 int snd_ctl_add_enumerated_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
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441 unsigned int element_count,
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442 unsigned int member_count,
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443 unsigned int items,
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444 const char *const labels[]);
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445 int snd_ctl_add_bytes_elem_set(snd_ctl_t *ctl, snd_ctl_elem_info_t *info,
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446 unsigned int element_count,
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447 unsigned int member_count);
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448
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449 int snd_ctl_elem_add_integer(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long imin, long imax, long istep);
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450 int snd_ctl_elem_add_integer64(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, long long imin, long long imax, long long istep);
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451 int snd_ctl_elem_add_boolean(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count);
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452 int snd_ctl_elem_add_enumerated(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id, unsigned int count, unsigned int items, const char *const names[]);
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453 int snd_ctl_elem_add_iec958(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id);
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454 int snd_ctl_elem_remove(snd_ctl_t *ctl, snd_ctl_elem_id_t *id);
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455
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456 size_t snd_ctl_elem_value_sizeof(void);
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jpayne@69
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457 /** \hideinitializer
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jpayne@69
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458 * \brief allocate an invalid #snd_ctl_elem_value_t using standard alloca
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459 * \param ptr returned pointer
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460 */
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461 #define snd_ctl_elem_value_alloca(ptr) __snd_alloca(ptr, snd_ctl_elem_value)
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462 int snd_ctl_elem_value_malloc(snd_ctl_elem_value_t **ptr);
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463 void snd_ctl_elem_value_free(snd_ctl_elem_value_t *obj);
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464 void snd_ctl_elem_value_clear(snd_ctl_elem_value_t *obj);
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465 void snd_ctl_elem_value_copy(snd_ctl_elem_value_t *dst, const snd_ctl_elem_value_t *src);
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466 int snd_ctl_elem_value_compare(snd_ctl_elem_value_t *left, const snd_ctl_elem_value_t *right);
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467 void snd_ctl_elem_value_get_id(const snd_ctl_elem_value_t *obj, snd_ctl_elem_id_t *ptr);
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jpayne@69
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468 unsigned int snd_ctl_elem_value_get_numid(const snd_ctl_elem_value_t *obj);
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469 snd_ctl_elem_iface_t snd_ctl_elem_value_get_interface(const snd_ctl_elem_value_t *obj);
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jpayne@69
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470 unsigned int snd_ctl_elem_value_get_device(const snd_ctl_elem_value_t *obj);
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jpayne@69
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471 unsigned int snd_ctl_elem_value_get_subdevice(const snd_ctl_elem_value_t *obj);
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jpayne@69
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472 const char *snd_ctl_elem_value_get_name(const snd_ctl_elem_value_t *obj);
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jpayne@69
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473 unsigned int snd_ctl_elem_value_get_index(const snd_ctl_elem_value_t *obj);
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jpayne@69
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474 void snd_ctl_elem_value_set_id(snd_ctl_elem_value_t *obj, const snd_ctl_elem_id_t *ptr);
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jpayne@69
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475 void snd_ctl_elem_value_set_numid(snd_ctl_elem_value_t *obj, unsigned int val);
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jpayne@69
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476 void snd_ctl_elem_value_set_interface(snd_ctl_elem_value_t *obj, snd_ctl_elem_iface_t val);
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jpayne@69
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477 void snd_ctl_elem_value_set_device(snd_ctl_elem_value_t *obj, unsigned int val);
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jpayne@69
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478 void snd_ctl_elem_value_set_subdevice(snd_ctl_elem_value_t *obj, unsigned int val);
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479 void snd_ctl_elem_value_set_name(snd_ctl_elem_value_t *obj, const char *val);
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jpayne@69
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480 void snd_ctl_elem_value_set_index(snd_ctl_elem_value_t *obj, unsigned int val);
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jpayne@69
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481 int snd_ctl_elem_value_get_boolean(const snd_ctl_elem_value_t *obj, unsigned int idx);
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jpayne@69
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482 long snd_ctl_elem_value_get_integer(const snd_ctl_elem_value_t *obj, unsigned int idx);
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jpayne@69
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483 long long snd_ctl_elem_value_get_integer64(const snd_ctl_elem_value_t *obj, unsigned int idx);
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jpayne@69
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484 unsigned int snd_ctl_elem_value_get_enumerated(const snd_ctl_elem_value_t *obj, unsigned int idx);
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jpayne@69
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485 unsigned char snd_ctl_elem_value_get_byte(const snd_ctl_elem_value_t *obj, unsigned int idx);
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jpayne@69
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486 void snd_ctl_elem_value_set_boolean(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
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jpayne@69
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487 void snd_ctl_elem_value_set_integer(snd_ctl_elem_value_t *obj, unsigned int idx, long val);
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jpayne@69
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488 void snd_ctl_elem_value_set_integer64(snd_ctl_elem_value_t *obj, unsigned int idx, long long val);
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jpayne@69
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489 void snd_ctl_elem_value_set_enumerated(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned int val);
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jpayne@69
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490 void snd_ctl_elem_value_set_byte(snd_ctl_elem_value_t *obj, unsigned int idx, unsigned char val);
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jpayne@69
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491 void snd_ctl_elem_set_bytes(snd_ctl_elem_value_t *obj, void *data, size_t size);
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jpayne@69
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492 const void * snd_ctl_elem_value_get_bytes(const snd_ctl_elem_value_t *obj);
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jpayne@69
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493 void snd_ctl_elem_value_get_iec958(const snd_ctl_elem_value_t *obj, snd_aes_iec958_t *ptr);
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494 void snd_ctl_elem_value_set_iec958(snd_ctl_elem_value_t *obj, const snd_aes_iec958_t *ptr);
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495
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496 int snd_tlv_parse_dB_info(unsigned int *tlv, unsigned int tlv_size,
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497 unsigned int **db_tlvp);
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jpayne@69
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498 int snd_tlv_get_dB_range(unsigned int *tlv, long rangemin, long rangemax,
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499 long *min, long *max);
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jpayne@69
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500 int snd_tlv_convert_to_dB(unsigned int *tlv, long rangemin, long rangemax,
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501 long volume, long *db_gain);
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502 int snd_tlv_convert_from_dB(unsigned int *tlv, long rangemin, long rangemax,
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503 long db_gain, long *value, int xdir);
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jpayne@69
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504 int snd_ctl_get_dB_range(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
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jpayne@69
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505 long *min, long *max);
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jpayne@69
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506 int snd_ctl_convert_to_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
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jpayne@69
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507 long volume, long *db_gain);
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jpayne@69
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508 int snd_ctl_convert_from_dB(snd_ctl_t *ctl, const snd_ctl_elem_id_t *id,
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jpayne@69
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509 long db_gain, long *value, int xdir);
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jpayne@69
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510
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jpayne@69
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511 /**
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jpayne@69
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512 * \defgroup HControl High level Control Interface
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jpayne@69
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513 * \ingroup Control
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jpayne@69
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514 * The high level control interface.
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jpayne@69
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515 * See \ref hcontrol page for more details.
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516 * \{
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517 */
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518
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jpayne@69
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519 /** HCTL element handle */
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jpayne@69
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520 typedef struct _snd_hctl_elem snd_hctl_elem_t;
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521
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jpayne@69
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522 /** HCTL handle */
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jpayne@69
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523 typedef struct _snd_hctl snd_hctl_t;
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jpayne@69
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524
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jpayne@69
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525 /**
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jpayne@69
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526 * \brief Compare function for sorting HCTL elements
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jpayne@69
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527 * \param e1 First element
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528 * \param e2 Second element
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529 * \return -1 if e1 < e2, 0 if e1 == e2, 1 if e1 > e2
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jpayne@69
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530 */
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jpayne@69
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531 typedef int (*snd_hctl_compare_t)(const snd_hctl_elem_t *e1,
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jpayne@69
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532 const snd_hctl_elem_t *e2);
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jpayne@69
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533 int snd_hctl_compare_fast(const snd_hctl_elem_t *c1,
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jpayne@69
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534 const snd_hctl_elem_t *c2);
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jpayne@69
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535 /**
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jpayne@69
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536 * \brief HCTL callback function
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jpayne@69
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537 * \param hctl HCTL handle
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jpayne@69
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538 * \param mask event mask
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jpayne@69
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539 * \param elem related HCTL element (if any)
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jpayne@69
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540 * \return 0 on success otherwise a negative error code
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jpayne@69
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541 */
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jpayne@69
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542 typedef int (*snd_hctl_callback_t)(snd_hctl_t *hctl,
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jpayne@69
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543 unsigned int mask,
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544 snd_hctl_elem_t *elem);
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jpayne@69
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545 /**
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jpayne@69
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546 * \brief HCTL element callback function
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jpayne@69
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547 * \param elem HCTL element
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548 * \param mask event mask
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jpayne@69
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549 * \return 0 on success otherwise a negative error code
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jpayne@69
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550 */
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jpayne@69
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551 typedef int (*snd_hctl_elem_callback_t)(snd_hctl_elem_t *elem,
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jpayne@69
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552 unsigned int mask);
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jpayne@69
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553
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jpayne@69
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554 int snd_hctl_open(snd_hctl_t **hctl, const char *name, int mode);
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jpayne@69
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555 int snd_hctl_open_ctl(snd_hctl_t **hctlp, snd_ctl_t *ctl);
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jpayne@69
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556 int snd_hctl_close(snd_hctl_t *hctl);
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jpayne@69
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557 int snd_hctl_nonblock(snd_hctl_t *hctl, int nonblock);
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jpayne@69
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558 static __inline__ int snd_hctl_abort(snd_hctl_t *hctl) { return snd_hctl_nonblock(hctl, 2); }
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jpayne@69
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559 int snd_hctl_poll_descriptors_count(snd_hctl_t *hctl);
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jpayne@69
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560 int snd_hctl_poll_descriptors(snd_hctl_t *hctl, struct pollfd *pfds, unsigned int space);
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jpayne@69
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561 int snd_hctl_poll_descriptors_revents(snd_hctl_t *ctl, struct pollfd *pfds, unsigned int nfds, unsigned short *revents);
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jpayne@69
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562 unsigned int snd_hctl_get_count(snd_hctl_t *hctl);
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jpayne@69
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563 int snd_hctl_set_compare(snd_hctl_t *hctl, snd_hctl_compare_t hsort);
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jpayne@69
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564 snd_hctl_elem_t *snd_hctl_first_elem(snd_hctl_t *hctl);
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jpayne@69
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565 snd_hctl_elem_t *snd_hctl_last_elem(snd_hctl_t *hctl);
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jpayne@69
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566 snd_hctl_elem_t *snd_hctl_find_elem(snd_hctl_t *hctl, const snd_ctl_elem_id_t *id);
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jpayne@69
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567 void snd_hctl_set_callback(snd_hctl_t *hctl, snd_hctl_callback_t callback);
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jpayne@69
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568 void snd_hctl_set_callback_private(snd_hctl_t *hctl, void *data);
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jpayne@69
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569 void *snd_hctl_get_callback_private(snd_hctl_t *hctl);
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jpayne@69
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570 int snd_hctl_load(snd_hctl_t *hctl);
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jpayne@69
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571 int snd_hctl_free(snd_hctl_t *hctl);
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jpayne@69
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572 int snd_hctl_handle_events(snd_hctl_t *hctl);
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jpayne@69
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573 const char *snd_hctl_name(snd_hctl_t *hctl);
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jpayne@69
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574 int snd_hctl_wait(snd_hctl_t *hctl, int timeout);
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jpayne@69
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575 snd_ctl_t *snd_hctl_ctl(snd_hctl_t *hctl);
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jpayne@69
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576
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jpayne@69
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577 snd_hctl_elem_t *snd_hctl_elem_next(snd_hctl_elem_t *elem);
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jpayne@69
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578 snd_hctl_elem_t *snd_hctl_elem_prev(snd_hctl_elem_t *elem);
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jpayne@69
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579 int snd_hctl_elem_info(snd_hctl_elem_t *elem, snd_ctl_elem_info_t * info);
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jpayne@69
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580 int snd_hctl_elem_read(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
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jpayne@69
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581 int snd_hctl_elem_write(snd_hctl_elem_t *elem, snd_ctl_elem_value_t * value);
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jpayne@69
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582 int snd_hctl_elem_tlv_read(snd_hctl_elem_t *elem, unsigned int *tlv, unsigned int tlv_size);
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jpayne@69
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583 int snd_hctl_elem_tlv_write(snd_hctl_elem_t *elem, const unsigned int *tlv);
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jpayne@69
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584 int snd_hctl_elem_tlv_command(snd_hctl_elem_t *elem, const unsigned int *tlv);
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585
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jpayne@69
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586 snd_hctl_t *snd_hctl_elem_get_hctl(snd_hctl_elem_t *elem);
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jpayne@69
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587
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jpayne@69
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588 void snd_hctl_elem_get_id(const snd_hctl_elem_t *obj, snd_ctl_elem_id_t *ptr);
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jpayne@69
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589 unsigned int snd_hctl_elem_get_numid(const snd_hctl_elem_t *obj);
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jpayne@69
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590 snd_ctl_elem_iface_t snd_hctl_elem_get_interface(const snd_hctl_elem_t *obj);
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jpayne@69
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591 unsigned int snd_hctl_elem_get_device(const snd_hctl_elem_t *obj);
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jpayne@69
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592 unsigned int snd_hctl_elem_get_subdevice(const snd_hctl_elem_t *obj);
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jpayne@69
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593 const char *snd_hctl_elem_get_name(const snd_hctl_elem_t *obj);
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jpayne@69
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594 unsigned int snd_hctl_elem_get_index(const snd_hctl_elem_t *obj);
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jpayne@69
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595 void snd_hctl_elem_set_callback(snd_hctl_elem_t *obj, snd_hctl_elem_callback_t val);
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jpayne@69
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596 void * snd_hctl_elem_get_callback_private(const snd_hctl_elem_t *obj);
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jpayne@69
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597 void snd_hctl_elem_set_callback_private(snd_hctl_elem_t *obj, void * val);
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jpayne@69
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598
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jpayne@69
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599 /** \} */
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jpayne@69
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600
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jpayne@69
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601 /** \} */
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jpayne@69
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602
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jpayne@69
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603 /**
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jpayne@69
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604 * \defgroup SControl Setup Control Interface
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jpayne@69
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605 * \ingroup Control
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jpayne@69
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606 * The setup control interface - set or modify control elements from a configuration file.
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jpayne@69
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607 * \{
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jpayne@69
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608 */
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609
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jpayne@69
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610 int snd_sctl_build(snd_sctl_t **ctl, snd_ctl_t *handle, snd_config_t *config,
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jpayne@69
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611 snd_config_t *private_data, int mode);
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jpayne@69
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612 int snd_sctl_free(snd_sctl_t *handle);
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jpayne@69
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613 int snd_sctl_install(snd_sctl_t *handle);
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jpayne@69
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614 int snd_sctl_remove(snd_sctl_t *handle);
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615
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jpayne@69
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616 /** \} */
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jpayne@69
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617
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jpayne@69
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618 #ifdef __cplusplus
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jpayne@69
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619 }
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jpayne@69
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620 #endif
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jpayne@69
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621
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jpayne@69
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622 #endif /* __ALSA_CONTROL_H */
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