Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __SOUND_PCM_H |
| 2 | #define __SOUND_PCM_H |
| 3 | |
| 4 | /* |
| 5 | * Digital Audio (PCM) abstract layer |
| 6 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
| 7 | * Abramo Bagnara <abramo@alsa-project.org> |
| 8 | * |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 | * |
| 24 | */ |
| 25 | |
| 26 | #include <sound/asound.h> |
| 27 | #include <sound/memalloc.h> |
| 28 | #include <linux/poll.h> |
| 29 | #include <linux/bitops.h> |
| 30 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #define snd_pcm_substream_chip(substream) ((substream)->private_data) |
| 32 | #define snd_pcm_chip(pcm) ((pcm)->private_data) |
| 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 35 | #include "pcm_oss.h" |
| 36 | #endif |
| 37 | |
| 38 | /* |
| 39 | * Hardware (lowlevel) section |
| 40 | */ |
| 41 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 42 | struct snd_pcm_hardware { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 43 | unsigned int info; /* SNDRV_PCM_INFO_* */ |
| 44 | u64 formats; /* SNDRV_PCM_FMTBIT_* */ |
| 45 | unsigned int rates; /* SNDRV_PCM_RATE_* */ |
| 46 | unsigned int rate_min; /* min rate */ |
| 47 | unsigned int rate_max; /* max rate */ |
| 48 | unsigned int channels_min; /* min channels */ |
| 49 | unsigned int channels_max; /* max channels */ |
| 50 | size_t buffer_bytes_max; /* max buffer size */ |
| 51 | size_t period_bytes_min; /* min period size */ |
| 52 | size_t period_bytes_max; /* max period size */ |
| 53 | unsigned int periods_min; /* min # of periods */ |
| 54 | unsigned int periods_max; /* max # of periods */ |
| 55 | size_t fifo_size; /* fifo size in bytes */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 56 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 58 | struct snd_pcm_ops { |
| 59 | int (*open)(struct snd_pcm_substream *substream); |
| 60 | int (*close)(struct snd_pcm_substream *substream); |
| 61 | int (*ioctl)(struct snd_pcm_substream * substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | unsigned int cmd, void *arg); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 63 | int (*hw_params)(struct snd_pcm_substream *substream, |
| 64 | struct snd_pcm_hw_params *params); |
| 65 | int (*hw_free)(struct snd_pcm_substream *substream); |
| 66 | int (*prepare)(struct snd_pcm_substream *substream); |
| 67 | int (*trigger)(struct snd_pcm_substream *substream, int cmd); |
| 68 | snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *substream); |
| 69 | int (*copy)(struct snd_pcm_substream *substream, int channel, |
| 70 | snd_pcm_uframes_t pos, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | void __user *buf, snd_pcm_uframes_t count); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 72 | int (*silence)(struct snd_pcm_substream *substream, int channel, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | snd_pcm_uframes_t pos, snd_pcm_uframes_t count); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 74 | struct page *(*page)(struct snd_pcm_substream *substream, |
| 75 | unsigned long offset); |
| 76 | int (*mmap)(struct snd_pcm_substream *substream, struct vm_area_struct *vma); |
| 77 | int (*ack)(struct snd_pcm_substream *substream); |
| 78 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | |
| 80 | /* |
| 81 | * |
| 82 | */ |
| 83 | |
| 84 | #define SNDRV_PCM_DEVICES 8 |
| 85 | |
| 86 | #define SNDRV_PCM_IOCTL1_FALSE ((void *)0) |
| 87 | #define SNDRV_PCM_IOCTL1_TRUE ((void *)1) |
| 88 | |
| 89 | #define SNDRV_PCM_IOCTL1_RESET 0 |
| 90 | #define SNDRV_PCM_IOCTL1_INFO 1 |
| 91 | #define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2 |
| 92 | #define SNDRV_PCM_IOCTL1_GSTATE 3 |
| 93 | |
| 94 | #define SNDRV_PCM_TRIGGER_STOP 0 |
| 95 | #define SNDRV_PCM_TRIGGER_START 1 |
| 96 | #define SNDRV_PCM_TRIGGER_PAUSE_PUSH 3 |
| 97 | #define SNDRV_PCM_TRIGGER_PAUSE_RELEASE 4 |
| 98 | #define SNDRV_PCM_TRIGGER_SUSPEND 5 |
| 99 | #define SNDRV_PCM_TRIGGER_RESUME 6 |
| 100 | |
| 101 | #define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1) |
| 102 | |
| 103 | /* If you change this don't forget to change rates[] table in pcm_native.c */ |
| 104 | #define SNDRV_PCM_RATE_5512 (1<<0) /* 5512Hz */ |
| 105 | #define SNDRV_PCM_RATE_8000 (1<<1) /* 8000Hz */ |
| 106 | #define SNDRV_PCM_RATE_11025 (1<<2) /* 11025Hz */ |
| 107 | #define SNDRV_PCM_RATE_16000 (1<<3) /* 16000Hz */ |
| 108 | #define SNDRV_PCM_RATE_22050 (1<<4) /* 22050Hz */ |
| 109 | #define SNDRV_PCM_RATE_32000 (1<<5) /* 32000Hz */ |
| 110 | #define SNDRV_PCM_RATE_44100 (1<<6) /* 44100Hz */ |
| 111 | #define SNDRV_PCM_RATE_48000 (1<<7) /* 48000Hz */ |
| 112 | #define SNDRV_PCM_RATE_64000 (1<<8) /* 64000Hz */ |
| 113 | #define SNDRV_PCM_RATE_88200 (1<<9) /* 88200Hz */ |
| 114 | #define SNDRV_PCM_RATE_96000 (1<<10) /* 96000Hz */ |
| 115 | #define SNDRV_PCM_RATE_176400 (1<<11) /* 176400Hz */ |
| 116 | #define SNDRV_PCM_RATE_192000 (1<<12) /* 192000Hz */ |
| 117 | |
| 118 | #define SNDRV_PCM_RATE_CONTINUOUS (1<<30) /* continuous range */ |
| 119 | #define SNDRV_PCM_RATE_KNOT (1<<31) /* supports more non-continuos rates */ |
| 120 | |
| 121 | #define SNDRV_PCM_RATE_8000_44100 (SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_11025|\ |
| 122 | SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_22050|\ |
| 123 | SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100) |
| 124 | #define SNDRV_PCM_RATE_8000_48000 (SNDRV_PCM_RATE_8000_44100|SNDRV_PCM_RATE_48000) |
| 125 | #define SNDRV_PCM_RATE_8000_96000 (SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_64000|\ |
| 126 | SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000) |
| 127 | #define SNDRV_PCM_RATE_8000_192000 (SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\ |
| 128 | SNDRV_PCM_RATE_192000) |
| 129 | #define SNDRV_PCM_FMTBIT_S8 (1ULL << SNDRV_PCM_FORMAT_S8) |
| 130 | #define SNDRV_PCM_FMTBIT_U8 (1ULL << SNDRV_PCM_FORMAT_U8) |
| 131 | #define SNDRV_PCM_FMTBIT_S16_LE (1ULL << SNDRV_PCM_FORMAT_S16_LE) |
| 132 | #define SNDRV_PCM_FMTBIT_S16_BE (1ULL << SNDRV_PCM_FORMAT_S16_BE) |
| 133 | #define SNDRV_PCM_FMTBIT_U16_LE (1ULL << SNDRV_PCM_FORMAT_U16_LE) |
| 134 | #define SNDRV_PCM_FMTBIT_U16_BE (1ULL << SNDRV_PCM_FORMAT_U16_BE) |
| 135 | #define SNDRV_PCM_FMTBIT_S24_LE (1ULL << SNDRV_PCM_FORMAT_S24_LE) |
| 136 | #define SNDRV_PCM_FMTBIT_S24_BE (1ULL << SNDRV_PCM_FORMAT_S24_BE) |
| 137 | #define SNDRV_PCM_FMTBIT_U24_LE (1ULL << SNDRV_PCM_FORMAT_U24_LE) |
| 138 | #define SNDRV_PCM_FMTBIT_U24_BE (1ULL << SNDRV_PCM_FORMAT_U24_BE) |
| 139 | #define SNDRV_PCM_FMTBIT_S32_LE (1ULL << SNDRV_PCM_FORMAT_S32_LE) |
| 140 | #define SNDRV_PCM_FMTBIT_S32_BE (1ULL << SNDRV_PCM_FORMAT_S32_BE) |
| 141 | #define SNDRV_PCM_FMTBIT_U32_LE (1ULL << SNDRV_PCM_FORMAT_U32_LE) |
| 142 | #define SNDRV_PCM_FMTBIT_U32_BE (1ULL << SNDRV_PCM_FORMAT_U32_BE) |
| 143 | #define SNDRV_PCM_FMTBIT_FLOAT_LE (1ULL << SNDRV_PCM_FORMAT_FLOAT_LE) |
| 144 | #define SNDRV_PCM_FMTBIT_FLOAT_BE (1ULL << SNDRV_PCM_FORMAT_FLOAT_BE) |
| 145 | #define SNDRV_PCM_FMTBIT_FLOAT64_LE (1ULL << SNDRV_PCM_FORMAT_FLOAT64_LE) |
| 146 | #define SNDRV_PCM_FMTBIT_FLOAT64_BE (1ULL << SNDRV_PCM_FORMAT_FLOAT64_BE) |
| 147 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE (1ULL << SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE) |
| 148 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE (1ULL << SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE) |
| 149 | #define SNDRV_PCM_FMTBIT_MU_LAW (1ULL << SNDRV_PCM_FORMAT_MU_LAW) |
| 150 | #define SNDRV_PCM_FMTBIT_A_LAW (1ULL << SNDRV_PCM_FORMAT_A_LAW) |
| 151 | #define SNDRV_PCM_FMTBIT_IMA_ADPCM (1ULL << SNDRV_PCM_FORMAT_IMA_ADPCM) |
| 152 | #define SNDRV_PCM_FMTBIT_MPEG (1ULL << SNDRV_PCM_FORMAT_MPEG) |
| 153 | #define SNDRV_PCM_FMTBIT_GSM (1ULL << SNDRV_PCM_FORMAT_GSM) |
| 154 | #define SNDRV_PCM_FMTBIT_SPECIAL (1ULL << SNDRV_PCM_FORMAT_SPECIAL) |
| 155 | #define SNDRV_PCM_FMTBIT_S24_3LE (1ULL << SNDRV_PCM_FORMAT_S24_3LE) |
| 156 | #define SNDRV_PCM_FMTBIT_U24_3LE (1ULL << SNDRV_PCM_FORMAT_U24_3LE) |
| 157 | #define SNDRV_PCM_FMTBIT_S24_3BE (1ULL << SNDRV_PCM_FORMAT_S24_3BE) |
| 158 | #define SNDRV_PCM_FMTBIT_U24_3BE (1ULL << SNDRV_PCM_FORMAT_U24_3BE) |
| 159 | #define SNDRV_PCM_FMTBIT_S20_3LE (1ULL << SNDRV_PCM_FORMAT_S20_3LE) |
| 160 | #define SNDRV_PCM_FMTBIT_U20_3LE (1ULL << SNDRV_PCM_FORMAT_U20_3LE) |
| 161 | #define SNDRV_PCM_FMTBIT_S20_3BE (1ULL << SNDRV_PCM_FORMAT_S20_3BE) |
| 162 | #define SNDRV_PCM_FMTBIT_U20_3BE (1ULL << SNDRV_PCM_FORMAT_U20_3BE) |
| 163 | #define SNDRV_PCM_FMTBIT_S18_3LE (1ULL << SNDRV_PCM_FORMAT_S18_3LE) |
| 164 | #define SNDRV_PCM_FMTBIT_U18_3LE (1ULL << SNDRV_PCM_FORMAT_U18_3LE) |
| 165 | #define SNDRV_PCM_FMTBIT_S18_3BE (1ULL << SNDRV_PCM_FORMAT_S18_3BE) |
| 166 | #define SNDRV_PCM_FMTBIT_U18_3BE (1ULL << SNDRV_PCM_FORMAT_U18_3BE) |
| 167 | |
| 168 | #ifdef SNDRV_LITTLE_ENDIAN |
| 169 | #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE |
| 170 | #define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_LE |
| 171 | #define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_LE |
| 172 | #define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_LE |
| 173 | #define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_LE |
| 174 | #define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_LE |
| 175 | #define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_LE |
| 176 | #define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_LE |
| 177 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE |
| 178 | #endif |
| 179 | #ifdef SNDRV_BIG_ENDIAN |
| 180 | #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_BE |
| 181 | #define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_BE |
| 182 | #define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_BE |
| 183 | #define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_BE |
| 184 | #define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_BE |
| 185 | #define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_BE |
| 186 | #define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_BE |
| 187 | #define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_BE |
| 188 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE |
| 189 | #endif |
| 190 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 191 | struct snd_pcm_file { |
| 192 | struct snd_pcm_substream *substream; |
| 193 | struct snd_pcm_file *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | }; |
| 195 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 196 | struct snd_pcm_hw_rule; |
| 197 | typedef int (*snd_pcm_hw_rule_func_t)(struct snd_pcm_hw_params *params, |
| 198 | struct snd_pcm_hw_rule *rule); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 200 | struct snd_pcm_hw_rule { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | unsigned int cond; |
| 202 | snd_pcm_hw_rule_func_t func; |
| 203 | int var; |
| 204 | int deps[4]; |
| 205 | void *private; |
| 206 | }; |
| 207 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 208 | struct snd_pcm_hw_constraints { |
| 209 | struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 211 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; |
| 213 | unsigned int rules_num; |
| 214 | unsigned int rules_all; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 215 | struct snd_pcm_hw_rule *rules; |
| 216 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 218 | static inline struct snd_mask *constrs_mask(struct snd_pcm_hw_constraints *constrs, |
| 219 | snd_pcm_hw_param_t var) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | { |
| 221 | return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
| 222 | } |
| 223 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 224 | static inline struct snd_interval *constrs_interval(struct snd_pcm_hw_constraints *constrs, |
| 225 | snd_pcm_hw_param_t var) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | { |
| 227 | return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
| 228 | } |
| 229 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 230 | struct snd_ratnum { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | unsigned int num; |
| 232 | unsigned int den_min, den_max, den_step; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 233 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 234 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 235 | struct snd_ratden { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | unsigned int num_min, num_max, num_step; |
| 237 | unsigned int den; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 238 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 240 | struct snd_pcm_hw_constraint_ratnums { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 241 | int nrats; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 242 | struct snd_ratnum *rats; |
| 243 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 244 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 245 | struct snd_pcm_hw_constraint_ratdens { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | int nrats; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 247 | struct snd_ratden *rats; |
| 248 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 249 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 250 | struct snd_pcm_hw_constraint_list { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | unsigned int count; |
| 252 | unsigned int *list; |
| 253 | unsigned int mask; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 254 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 256 | struct snd_pcm_runtime { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | /* -- Status -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 258 | struct snd_pcm_substream *trigger_master; |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 259 | struct timespec trigger_tstamp; /* trigger timestamp */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | int overrange; |
| 261 | snd_pcm_uframes_t avail_max; |
| 262 | snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */ |
| 263 | snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time*/ |
| 264 | |
| 265 | /* -- HW params -- */ |
| 266 | snd_pcm_access_t access; /* access mode */ |
| 267 | snd_pcm_format_t format; /* SNDRV_PCM_FORMAT_* */ |
| 268 | snd_pcm_subformat_t subformat; /* subformat */ |
| 269 | unsigned int rate; /* rate in Hz */ |
| 270 | unsigned int channels; /* channels */ |
| 271 | snd_pcm_uframes_t period_size; /* period size */ |
| 272 | unsigned int periods; /* periods */ |
| 273 | snd_pcm_uframes_t buffer_size; /* buffer size */ |
| 274 | unsigned int tick_time; /* tick time */ |
| 275 | snd_pcm_uframes_t min_align; /* Min alignment for the format */ |
| 276 | size_t byte_align; |
| 277 | unsigned int frame_bits; |
| 278 | unsigned int sample_bits; |
| 279 | unsigned int info; |
| 280 | unsigned int rate_num; |
| 281 | unsigned int rate_den; |
| 282 | |
| 283 | /* -- SW params -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 284 | int tstamp_mode; /* mmap timestamp is updated */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | unsigned int period_step; |
| 286 | unsigned int sleep_min; /* min ticks to sleep */ |
| 287 | snd_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */ |
| 288 | snd_pcm_uframes_t start_threshold; |
| 289 | snd_pcm_uframes_t stop_threshold; |
| 290 | snd_pcm_uframes_t silence_threshold; /* Silence filling happens when |
| 291 | noise is nearest than this */ |
| 292 | snd_pcm_uframes_t silence_size; /* Silence filling size */ |
| 293 | snd_pcm_uframes_t boundary; /* pointers wrap point */ |
| 294 | |
| 295 | snd_pcm_uframes_t silence_start; /* starting pointer to silence area */ |
| 296 | snd_pcm_uframes_t silence_filled; /* size filled with silence */ |
| 297 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 298 | union snd_pcm_sync_id sync; /* hardware synchronization ID */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 299 | |
| 300 | /* -- mmap -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 301 | volatile struct snd_pcm_mmap_status *status; |
| 302 | volatile struct snd_pcm_mmap_control *control; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | atomic_t mmap_count; |
| 304 | |
| 305 | /* -- locking / scheduling -- */ |
| 306 | wait_queue_head_t sleep; |
| 307 | struct timer_list tick_timer; |
| 308 | struct fasync_struct *fasync; |
| 309 | |
| 310 | /* -- private section -- */ |
| 311 | void *private_data; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 312 | void (*private_free)(struct snd_pcm_runtime *runtime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | |
| 314 | /* -- hardware description -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 315 | struct snd_pcm_hardware hw; |
| 316 | struct snd_pcm_hw_constraints hw_constraints; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 317 | |
| 318 | /* -- interrupt callbacks -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 319 | void (*transfer_ack_begin)(struct snd_pcm_substream *substream); |
| 320 | void (*transfer_ack_end)(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 321 | |
| 322 | /* -- timer -- */ |
| 323 | unsigned int timer_resolution; /* timer resolution */ |
| 324 | |
| 325 | /* -- DMA -- */ |
| 326 | unsigned char *dma_area; /* DMA area */ |
| 327 | dma_addr_t dma_addr; /* physical bus address (not accessible from main CPU) */ |
| 328 | size_t dma_bytes; /* size of DMA area */ |
| 329 | |
| 330 | struct snd_dma_buffer *dma_buffer_p; /* allocated buffer */ |
| 331 | |
| 332 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 333 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 334 | struct snd_pcm_oss_runtime oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | #endif |
| 336 | }; |
| 337 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 338 | struct snd_pcm_group { /* keep linked substreams */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | spinlock_t lock; |
| 340 | struct list_head substreams; |
| 341 | int count; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 342 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 344 | struct snd_pcm_substream { |
| 345 | struct snd_pcm *pcm; |
| 346 | struct snd_pcm_str *pstr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | void *private_data; /* copied from pcm->private_data */ |
| 348 | int number; |
| 349 | char name[32]; /* substream name */ |
| 350 | int stream; /* stream (direction) */ |
| 351 | size_t buffer_bytes_max; /* limit ring buffer size */ |
| 352 | struct snd_dma_buffer dma_buffer; |
| 353 | unsigned int dma_buf_id; |
| 354 | size_t dma_max; |
| 355 | /* -- hardware operations -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 356 | struct snd_pcm_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | /* -- runtime information -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 358 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 359 | /* -- timer section -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 360 | struct snd_timer *timer; /* timer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | unsigned timer_running: 1; /* time is running */ |
| 362 | spinlock_t timer_lock; |
| 363 | /* -- next substream -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 364 | struct snd_pcm_substream *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 365 | /* -- linked substreams -- */ |
| 366 | struct list_head link_list; /* linked list member */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 367 | struct snd_pcm_group self_group; /* fake group for non linked substream (with substream lock inside) */ |
| 368 | struct snd_pcm_group *group; /* pointer to current group */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | /* -- assigned files -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 370 | struct snd_pcm_file *file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 371 | struct file *ffile; |
| 372 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 373 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 374 | struct snd_pcm_oss_substream oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | #endif |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 376 | struct snd_info_entry *proc_root; |
| 377 | struct snd_info_entry *proc_info_entry; |
| 378 | struct snd_info_entry *proc_hw_params_entry; |
| 379 | struct snd_info_entry *proc_sw_params_entry; |
| 380 | struct snd_info_entry *proc_status_entry; |
| 381 | struct snd_info_entry *proc_prealloc_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 382 | /* misc flags */ |
| 383 | unsigned int no_mmap_ctrl: 1; |
| 384 | }; |
| 385 | |
| 386 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 387 | #define SUBSTREAM_BUSY(substream) ((substream)->file != NULL || ((substream)->oss.file != NULL)) |
| 388 | #else |
| 389 | #define SUBSTREAM_BUSY(substream) ((substream)->file != NULL) |
| 390 | #endif |
| 391 | |
| 392 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 393 | struct snd_pcm_str { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | int stream; /* stream (direction) */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 395 | struct snd_pcm *pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | /* -- substreams -- */ |
| 397 | unsigned int substream_count; |
| 398 | unsigned int substream_opened; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 399 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 401 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 402 | struct snd_pcm_oss_stream oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | #endif |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 404 | struct snd_pcm_file *files; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 405 | struct snd_info_entry *proc_root; |
| 406 | struct snd_info_entry *proc_info_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | #ifdef CONFIG_SND_DEBUG |
| 408 | unsigned int xrun_debug; /* 0 = disabled, 1 = verbose, 2 = stacktrace */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 409 | struct snd_info_entry *proc_xrun_debug_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | #endif |
| 411 | }; |
| 412 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 413 | struct snd_pcm { |
| 414 | struct snd_card *card; |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 415 | struct list_head list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 416 | unsigned int device; /* device number */ |
| 417 | unsigned int info_flags; |
| 418 | unsigned short dev_class; |
| 419 | unsigned short dev_subclass; |
| 420 | char id[64]; |
| 421 | char name[80]; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 422 | struct snd_pcm_str streams[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 423 | struct semaphore open_mutex; |
| 424 | wait_queue_head_t open_wait; |
| 425 | void *private_data; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 426 | void (*private_free) (struct snd_pcm *pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 427 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 428 | struct snd_pcm_oss oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 429 | #endif |
| 430 | }; |
| 431 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 432 | struct snd_pcm_notify { |
| 433 | int (*n_register) (struct snd_pcm * pcm); |
| 434 | int (*n_disconnect) (struct snd_pcm * pcm); |
| 435 | int (*n_unregister) (struct snd_pcm * pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 436 | struct list_head list; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 437 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | |
| 439 | /* |
| 440 | * Registering |
| 441 | */ |
| 442 | |
Clemens Ladisch | 2af677f | 2005-11-20 14:03:48 +0100 | [diff] [blame] | 443 | extern struct file_operations snd_pcm_f_ops[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 445 | int snd_pcm_new(struct snd_card *card, char *id, int device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | int playback_count, int capture_count, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 447 | struct snd_pcm **rpcm); |
| 448 | int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 450 | int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 451 | |
| 452 | /* |
| 453 | * Native I/O |
| 454 | */ |
| 455 | |
| 456 | extern rwlock_t snd_pcm_link_rwlock; |
| 457 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 458 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info); |
| 459 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
| 460 | struct snd_pcm_info __user *info); |
| 461 | int snd_pcm_status(struct snd_pcm_substream *substream, |
| 462 | struct snd_pcm_status *status); |
| 463 | int snd_pcm_prepare(struct snd_pcm_substream *substream); |
| 464 | int snd_pcm_start(struct snd_pcm_substream *substream); |
| 465 | int snd_pcm_stop(struct snd_pcm_substream *substream, int status); |
| 466 | int snd_pcm_drain_done(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | #ifdef CONFIG_PM |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 468 | int snd_pcm_suspend(struct snd_pcm_substream *substream); |
| 469 | int snd_pcm_suspend_all(struct snd_pcm *pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | #endif |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 471 | int snd_pcm_kernel_playback_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); |
| 472 | int snd_pcm_kernel_capture_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); |
| 473 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); |
| 474 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct snd_pcm_substream **rsubstream); |
| 475 | void snd_pcm_release_substream(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | void snd_pcm_vma_notify_data(void *client, void *data); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 477 | int snd_pcm_mmap_data(struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | |
| 479 | #if BITS_PER_LONG >= 64 |
| 480 | |
| 481 | static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) |
| 482 | { |
| 483 | *rem = *n % div; |
| 484 | *n /= div; |
| 485 | } |
| 486 | |
| 487 | #elif defined(i386) |
| 488 | |
| 489 | static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) |
| 490 | { |
| 491 | u_int32_t low, high; |
| 492 | low = *n & 0xffffffff; |
| 493 | high = *n >> 32; |
| 494 | if (high) { |
| 495 | u_int32_t high1 = high % div; |
| 496 | high /= div; |
| 497 | asm("divl %2":"=a" (low), "=d" (*rem):"rm" (div), "a" (low), "d" (high1)); |
| 498 | *n = (u_int64_t)high << 32 | low; |
| 499 | } else { |
| 500 | *n = low / div; |
| 501 | *rem = low % div; |
| 502 | } |
| 503 | } |
| 504 | #else |
| 505 | |
| 506 | static inline void divl(u_int32_t high, u_int32_t low, |
| 507 | u_int32_t div, |
| 508 | u_int32_t *q, u_int32_t *r) |
| 509 | { |
| 510 | u_int64_t n = (u_int64_t)high << 32 | low; |
| 511 | u_int64_t d = (u_int64_t)div << 31; |
| 512 | u_int32_t q1 = 0; |
| 513 | int c = 32; |
| 514 | while (n > 0xffffffffU) { |
| 515 | q1 <<= 1; |
| 516 | if (n >= d) { |
| 517 | n -= d; |
| 518 | q1 |= 1; |
| 519 | } |
| 520 | d >>= 1; |
| 521 | c--; |
| 522 | } |
| 523 | q1 <<= c; |
| 524 | if (n) { |
| 525 | low = n; |
| 526 | *q = q1 | (low / div); |
| 527 | *r = low % div; |
| 528 | } else { |
| 529 | *r = 0; |
| 530 | *q = q1; |
| 531 | } |
| 532 | return; |
| 533 | } |
| 534 | |
| 535 | static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) |
| 536 | { |
| 537 | u_int32_t low, high; |
| 538 | low = *n & 0xffffffff; |
| 539 | high = *n >> 32; |
| 540 | if (high) { |
| 541 | u_int32_t high1 = high % div; |
| 542 | u_int32_t low1 = low; |
| 543 | high /= div; |
| 544 | divl(high1, low1, div, &low, rem); |
| 545 | *n = (u_int64_t)high << 32 | low; |
| 546 | } else { |
| 547 | *n = low / div; |
| 548 | *rem = low % div; |
| 549 | } |
| 550 | } |
| 551 | #endif |
| 552 | |
| 553 | /* |
| 554 | * PCM library |
| 555 | */ |
| 556 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 557 | static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 558 | { |
| 559 | return substream->group != &substream->self_group; |
| 560 | } |
| 561 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 562 | static inline void snd_pcm_stream_lock(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | { |
| 564 | read_lock(&snd_pcm_link_rwlock); |
| 565 | spin_lock(&substream->self_group.lock); |
| 566 | } |
| 567 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 568 | static inline void snd_pcm_stream_unlock(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 569 | { |
| 570 | spin_unlock(&substream->self_group.lock); |
| 571 | read_unlock(&snd_pcm_link_rwlock); |
| 572 | } |
| 573 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 574 | static inline void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | { |
| 576 | read_lock_irq(&snd_pcm_link_rwlock); |
| 577 | spin_lock(&substream->self_group.lock); |
| 578 | } |
| 579 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 580 | static inline void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 581 | { |
| 582 | spin_unlock(&substream->self_group.lock); |
| 583 | read_unlock_irq(&snd_pcm_link_rwlock); |
| 584 | } |
| 585 | |
| 586 | #define snd_pcm_stream_lock_irqsave(substream, flags) \ |
| 587 | do { \ |
| 588 | read_lock_irqsave(&snd_pcm_link_rwlock, (flags)); \ |
| 589 | spin_lock(&substream->self_group.lock); \ |
| 590 | } while (0) |
| 591 | |
| 592 | #define snd_pcm_stream_unlock_irqrestore(substream, flags) \ |
| 593 | do { \ |
| 594 | spin_unlock(&substream->self_group.lock); \ |
| 595 | read_unlock_irqrestore(&snd_pcm_link_rwlock, (flags)); \ |
| 596 | } while (0) |
| 597 | |
| 598 | #define snd_pcm_group_for_each(pos, substream) \ |
| 599 | list_for_each(pos, &substream->group->substreams) |
| 600 | |
| 601 | #define snd_pcm_group_substream_entry(pos) \ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 602 | list_entry(pos, struct snd_pcm_substream, link_list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 603 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 604 | static inline int snd_pcm_running(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 605 | { |
| 606 | return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING || |
| 607 | (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING && |
| 608 | substream->stream == SNDRV_PCM_STREAM_PLAYBACK)); |
| 609 | } |
| 610 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 611 | static inline ssize_t bytes_to_samples(struct snd_pcm_runtime *runtime, ssize_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 612 | { |
| 613 | return size * 8 / runtime->sample_bits; |
| 614 | } |
| 615 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 616 | static inline snd_pcm_sframes_t bytes_to_frames(struct snd_pcm_runtime *runtime, ssize_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 617 | { |
| 618 | return size * 8 / runtime->frame_bits; |
| 619 | } |
| 620 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 621 | static inline ssize_t samples_to_bytes(struct snd_pcm_runtime *runtime, ssize_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 622 | { |
| 623 | return size * runtime->sample_bits / 8; |
| 624 | } |
| 625 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 626 | static inline ssize_t frames_to_bytes(struct snd_pcm_runtime *runtime, snd_pcm_sframes_t size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | { |
| 628 | return size * runtime->frame_bits / 8; |
| 629 | } |
| 630 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 631 | static inline int frame_aligned(struct snd_pcm_runtime *runtime, ssize_t bytes) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | { |
| 633 | return bytes % runtime->byte_align == 0; |
| 634 | } |
| 635 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 636 | static inline size_t snd_pcm_lib_buffer_bytes(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 637 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 638 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 639 | return frames_to_bytes(runtime, runtime->buffer_size); |
| 640 | } |
| 641 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 642 | static inline size_t snd_pcm_lib_period_bytes(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 643 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 644 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 645 | return frames_to_bytes(runtime, runtime->period_size); |
| 646 | } |
| 647 | |
| 648 | /* |
| 649 | * result is: 0 ... (boundary - 1) |
| 650 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 651 | static inline snd_pcm_uframes_t snd_pcm_playback_avail(struct snd_pcm_runtime *runtime) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 652 | { |
| 653 | snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr; |
| 654 | if (avail < 0) |
| 655 | avail += runtime->boundary; |
| 656 | else if ((snd_pcm_uframes_t) avail >= runtime->boundary) |
| 657 | avail -= runtime->boundary; |
| 658 | return avail; |
| 659 | } |
| 660 | |
| 661 | /* |
| 662 | * result is: 0 ... (boundary - 1) |
| 663 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 664 | static inline snd_pcm_uframes_t snd_pcm_capture_avail(struct snd_pcm_runtime *runtime) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | { |
| 666 | snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr; |
| 667 | if (avail < 0) |
| 668 | avail += runtime->boundary; |
| 669 | return avail; |
| 670 | } |
| 671 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 672 | static inline snd_pcm_sframes_t snd_pcm_playback_hw_avail(struct snd_pcm_runtime *runtime) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | { |
| 674 | return runtime->buffer_size - snd_pcm_playback_avail(runtime); |
| 675 | } |
| 676 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 677 | static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(struct snd_pcm_runtime *runtime) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | { |
| 679 | return runtime->buffer_size - snd_pcm_capture_avail(runtime); |
| 680 | } |
| 681 | |
| 682 | /** |
| 683 | * snd_pcm_playback_ready - check whether the playback buffer is available |
| 684 | * @substream: the pcm substream instance |
| 685 | * |
| 686 | * Checks whether enough free space is available on the playback buffer. |
| 687 | * |
| 688 | * Returns non-zero if available, or zero if not. |
| 689 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 690 | static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 691 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 692 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min; |
| 694 | } |
| 695 | |
| 696 | /** |
| 697 | * snd_pcm_capture_ready - check whether the capture buffer is available |
| 698 | * @substream: the pcm substream instance |
| 699 | * |
| 700 | * Checks whether enough capture data is available on the capture buffer. |
| 701 | * |
| 702 | * Returns non-zero if available, or zero if not. |
| 703 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 704 | static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 705 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 706 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 707 | return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min; |
| 708 | } |
| 709 | |
| 710 | /** |
| 711 | * snd_pcm_playback_data - check whether any data exists on the playback buffer |
| 712 | * @substream: the pcm substream instance |
| 713 | * |
| 714 | * Checks whether any data exists on the playback buffer. If stop_threshold |
| 715 | * is bigger or equal to boundary, then this function returns always non-zero. |
| 716 | * |
| 717 | * Returns non-zero if exists, or zero if not. |
| 718 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 719 | static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 720 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 721 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 722 | |
| 723 | if (runtime->stop_threshold >= runtime->boundary) |
| 724 | return 1; |
| 725 | return snd_pcm_playback_avail(runtime) < runtime->buffer_size; |
| 726 | } |
| 727 | |
| 728 | /** |
| 729 | * snd_pcm_playback_empty - check whether the playback buffer is empty |
| 730 | * @substream: the pcm substream instance |
| 731 | * |
| 732 | * Checks whether the playback buffer is empty. |
| 733 | * |
| 734 | * Returns non-zero if empty, or zero if not. |
| 735 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 736 | static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 737 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 738 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 739 | return snd_pcm_playback_avail(runtime) >= runtime->buffer_size; |
| 740 | } |
| 741 | |
| 742 | /** |
| 743 | * snd_pcm_capture_empty - check whether the capture buffer is empty |
| 744 | * @substream: the pcm substream instance |
| 745 | * |
| 746 | * Checks whether the capture buffer is empty. |
| 747 | * |
| 748 | * Returns non-zero if empty, or zero if not. |
| 749 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 750 | static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 751 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 752 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 753 | return snd_pcm_capture_avail(runtime) == 0; |
| 754 | } |
| 755 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 756 | static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream, |
| 757 | struct snd_pcm_substream *master) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 758 | { |
| 759 | substream->runtime->trigger_master = master; |
| 760 | } |
| 761 | |
| 762 | static inline int hw_is_mask(int var) |
| 763 | { |
| 764 | return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK && |
| 765 | var <= SNDRV_PCM_HW_PARAM_LAST_MASK; |
| 766 | } |
| 767 | |
| 768 | static inline int hw_is_interval(int var) |
| 769 | { |
| 770 | return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL && |
| 771 | var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; |
| 772 | } |
| 773 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 774 | static inline struct snd_mask *hw_param_mask(struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 775 | snd_pcm_hw_param_t var) |
| 776 | { |
| 777 | return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
| 778 | } |
| 779 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 780 | static inline struct snd_interval *hw_param_interval(struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | snd_pcm_hw_param_t var) |
| 782 | { |
| 783 | return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
| 784 | } |
| 785 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 786 | static inline const struct snd_mask *hw_param_mask_c(const struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | snd_pcm_hw_param_t var) |
| 788 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 789 | return (const struct snd_mask *)hw_param_mask((struct snd_pcm_hw_params*) params, var); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 790 | } |
| 791 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 792 | static inline const struct snd_interval *hw_param_interval_c(const struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | snd_pcm_hw_param_t var) |
| 794 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 795 | return (const struct snd_interval *)hw_param_interval((struct snd_pcm_hw_params*) params, var); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | } |
| 797 | |
| 798 | #define params_access(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_ACCESS)) |
| 799 | #define params_format(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_FORMAT)) |
| 800 | #define params_subformat(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_SUBFORMAT)) |
| 801 | #define params_channels(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min |
| 802 | #define params_rate(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_RATE)->min |
| 803 | #define params_period_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min |
| 804 | #define params_period_bytes(p) ((params_period_size(p)*snd_pcm_format_physical_width(params_format(p))*params_channels(p))/8) |
| 805 | #define params_periods(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIODS)->min |
| 806 | #define params_buffer_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min |
| 807 | #define params_buffer_bytes(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min |
| 808 | #define params_tick_time(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_TICK_TIME)->min |
| 809 | |
| 810 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 811 | int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v); |
| 812 | void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); |
| 813 | void snd_interval_div(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); |
| 814 | void snd_interval_muldivk(const struct snd_interval *a, const struct snd_interval *b, |
| 815 | unsigned int k, struct snd_interval *c); |
| 816 | void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, |
| 817 | const struct snd_interval *b, struct snd_interval *c); |
| 818 | int snd_interval_list(struct snd_interval *i, unsigned int count, unsigned int *list, unsigned int mask); |
| 819 | int snd_interval_ratnum(struct snd_interval *i, |
| 820 | unsigned int rats_count, struct snd_ratnum *rats, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 821 | unsigned int *nump, unsigned int *denp); |
| 822 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 823 | void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params); |
| 824 | void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var); |
| 825 | int snd_pcm_hw_param_near(struct snd_pcm_substream *substream, |
| 826 | struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 827 | snd_pcm_hw_param_t var, |
| 828 | unsigned int val, int *dir); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 829 | int snd_pcm_hw_param_set(struct snd_pcm_substream *pcm, |
| 830 | struct snd_pcm_hw_params *params, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | snd_pcm_hw_param_t var, |
| 832 | unsigned int val, int dir); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 833 | int snd_pcm_hw_params_choose(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 834 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 835 | int snd_pcm_hw_refine(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 836 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 837 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream); |
| 838 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 839 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 840 | int snd_pcm_hw_constraint_mask(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 841 | u_int32_t mask); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 842 | int snd_pcm_hw_constraint_mask64(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 843 | u_int64_t mask); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 844 | int snd_pcm_hw_constraint_minmax(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 845 | unsigned int min, unsigned int max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 846 | int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var); |
| 847 | int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 848 | unsigned int cond, |
| 849 | snd_pcm_hw_param_t var, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 850 | struct snd_pcm_hw_constraint_list *l); |
| 851 | int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | unsigned int cond, |
| 853 | snd_pcm_hw_param_t var, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 854 | struct snd_pcm_hw_constraint_ratnums *r); |
| 855 | int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 856 | unsigned int cond, |
| 857 | snd_pcm_hw_param_t var, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 858 | struct snd_pcm_hw_constraint_ratdens *r); |
| 859 | int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 860 | unsigned int cond, |
| 861 | unsigned int width, |
| 862 | unsigned int msbits); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 863 | int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 864 | unsigned int cond, |
| 865 | snd_pcm_hw_param_t var, |
| 866 | unsigned long step); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 867 | int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 868 | unsigned int cond, |
| 869 | snd_pcm_hw_param_t var); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 870 | int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | unsigned int cond, |
| 872 | int var, |
| 873 | snd_pcm_hw_rule_func_t func, void *private, |
| 874 | int dep, ...); |
| 875 | |
| 876 | int snd_pcm_format_signed(snd_pcm_format_t format); |
| 877 | int snd_pcm_format_unsigned(snd_pcm_format_t format); |
| 878 | int snd_pcm_format_linear(snd_pcm_format_t format); |
| 879 | int snd_pcm_format_little_endian(snd_pcm_format_t format); |
| 880 | int snd_pcm_format_big_endian(snd_pcm_format_t format); |
Takashi Iwai | 1b44c28 | 2005-09-09 15:05:33 +0200 | [diff] [blame] | 881 | #if 0 /* just for DocBook */ |
| 882 | /** |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 883 | * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian |
| 884 | * @format: the format to check |
| 885 | * |
| 886 | * Returns 1 if the given PCM format is CPU-endian, 0 if |
| 887 | * opposite, or a negative error code if endian not specified. |
| 888 | */ |
Takashi Iwai | 8cdfd25 | 2005-09-07 14:08:11 +0200 | [diff] [blame] | 889 | int snd_pcm_format_cpu_endian(snd_pcm_format_t format); |
Takashi Iwai | 1b44c28 | 2005-09-09 15:05:33 +0200 | [diff] [blame] | 890 | #endif /* DocBook */ |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 891 | #ifdef SNDRV_LITTLE_ENDIAN |
Martin Waitz | 9d01a82 | 2005-09-09 13:10:17 -0700 | [diff] [blame] | 892 | #define snd_pcm_format_cpu_endian(format) snd_pcm_format_little_endian(format) |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 893 | #else |
Martin Waitz | 9d01a82 | 2005-09-09 13:10:17 -0700 | [diff] [blame] | 894 | #define snd_pcm_format_cpu_endian(format) snd_pcm_format_big_endian(format) |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 895 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */ |
| 897 | int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */ |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 898 | ssize_t snd_pcm_format_size(snd_pcm_format_t format, size_t samples); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 899 | const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format); |
| 900 | int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames); |
| 901 | snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsignd, int big_endian); |
| 902 | const char *snd_pcm_format_name(snd_pcm_format_t format); |
| 903 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 904 | void snd_pcm_set_ops(struct snd_pcm * pcm, int direction, struct snd_pcm_ops *ops); |
| 905 | void snd_pcm_set_sync(struct snd_pcm_substream *substream); |
| 906 | int snd_pcm_lib_interleave_len(struct snd_pcm_substream *substream); |
| 907 | int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | unsigned int cmd, void *arg); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 909 | int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); |
| 910 | int snd_pcm_playback_xrun_check(struct snd_pcm_substream *substream); |
| 911 | int snd_pcm_capture_xrun_check(struct snd_pcm_substream *substream); |
| 912 | int snd_pcm_playback_xrun_asap(struct snd_pcm_substream *substream); |
| 913 | int snd_pcm_capture_xrun_asap(struct snd_pcm_substream *substream); |
| 914 | void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_uframes_t new_hw_ptr); |
| 915 | void snd_pcm_tick_prepare(struct snd_pcm_substream *substream); |
| 916 | void snd_pcm_tick_set(struct snd_pcm_substream *substream, unsigned long ticks); |
| 917 | void snd_pcm_tick_elapsed(struct snd_pcm_substream *substream); |
| 918 | void snd_pcm_period_elapsed(struct snd_pcm_substream *substream); |
| 919 | snd_pcm_sframes_t snd_pcm_lib_write(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 920 | const void __user *buf, |
| 921 | snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 922 | snd_pcm_sframes_t snd_pcm_lib_read(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 923 | void __user *buf, snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 924 | snd_pcm_sframes_t snd_pcm_lib_writev(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 925 | void __user **bufs, snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 926 | snd_pcm_sframes_t snd_pcm_lib_readv(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 927 | void __user **bufs, snd_pcm_uframes_t frames); |
| 928 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 929 | int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 930 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 931 | static inline void snd_pcm_set_runtime_buffer(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 932 | struct snd_dma_buffer *bufp) |
| 933 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 934 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 935 | if (bufp) { |
| 936 | runtime->dma_buffer_p = bufp; |
| 937 | runtime->dma_area = bufp->area; |
| 938 | runtime->dma_addr = bufp->addr; |
| 939 | runtime->dma_bytes = bufp->bytes; |
| 940 | } else { |
| 941 | runtime->dma_buffer_p = NULL; |
| 942 | runtime->dma_area = NULL; |
| 943 | runtime->dma_addr = 0; |
| 944 | runtime->dma_bytes = 0; |
| 945 | } |
| 946 | } |
| 947 | |
| 948 | /* |
| 949 | * Timer interface |
| 950 | */ |
| 951 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 952 | void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream); |
| 953 | void snd_pcm_timer_init(struct snd_pcm_substream *substream); |
| 954 | void snd_pcm_timer_done(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 955 | |
| 956 | /* |
| 957 | * Memory |
| 958 | */ |
| 959 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 960 | int snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream); |
| 961 | int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm); |
| 962 | int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | int type, struct device *data, |
| 964 | size_t size, size_t max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 965 | int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 966 | int type, void *data, |
| 967 | size_t size, size_t max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 968 | int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size); |
| 969 | int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 970 | |
| 971 | #define snd_pcm_substream_sgbuf(substream) ((substream)->runtime->dma_buffer_p->private_data) |
| 972 | #define snd_pcm_sgbuf_pages(size) snd_sgbuf_aligned_pages(size) |
| 973 | #define snd_pcm_sgbuf_get_addr(sgbuf,ofs) snd_sgbuf_get_addr(sgbuf,ofs) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 974 | struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigned long offset); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 975 | |
| 976 | /* handle mmap counter - PCM mmap callback should handle this counter properly */ |
| 977 | static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area) |
| 978 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 979 | struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 980 | atomic_inc(&substream->runtime->mmap_count); |
| 981 | } |
| 982 | |
| 983 | static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area) |
| 984 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 985 | struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 986 | atomic_dec(&substream->runtime->mmap_count); |
| 987 | } |
| 988 | |
| 989 | /* mmap for io-memory area */ |
| 990 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) |
| 991 | #define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 992 | int snd_pcm_lib_mmap_iomem(struct snd_pcm_substream *substream, struct vm_area_struct *area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 993 | #else |
| 994 | #define SNDRV_PCM_INFO_MMAP_IOMEM 0 |
| 995 | #define snd_pcm_lib_mmap_iomem NULL |
| 996 | #endif |
| 997 | |
| 998 | static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) |
| 999 | { |
| 1000 | *max = dma < 4 ? 64 * 1024 : 128 * 1024; |
| 1001 | } |
| 1002 | |
| 1003 | /* |
| 1004 | * Misc |
| 1005 | */ |
| 1006 | |
| 1007 | #define SNDRV_PCM_DEFAULT_CON_SPDIF (IEC958_AES0_CON_EMPHASIS_NONE|\ |
| 1008 | (IEC958_AES1_CON_ORIGINAL<<8)|\ |
| 1009 | (IEC958_AES1_CON_PCM_CODER<<8)|\ |
| 1010 | (IEC958_AES3_CON_FS_48000<<24)) |
| 1011 | |
| 1012 | #endif /* __SOUND_PCM_H */ |