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 |
Jaroslav Kysela | c1017a4 | 2007-10-15 09:50:19 +0200 | [diff] [blame] | 6 | * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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> |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 28 | #include <sound/minors.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 29 | #include <linux/poll.h> |
Al Viro | f23f6e0 | 2006-10-20 15:17:02 -0400 | [diff] [blame] | 30 | #include <linux/mm.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | #include <linux/bitops.h> |
Jean Pihet | e8db0be | 2011-08-25 15:35:03 +0200 | [diff] [blame] | 32 | #include <linux/pm_qos.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | #define snd_pcm_substream_chip(substream) ((substream)->private_data) |
| 35 | #define snd_pcm_chip(pcm) ((pcm)->private_data) |
| 36 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 37 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
David Howells | a1ce392 | 2012-10-02 18:01:25 +0100 | [diff] [blame] | 38 | #include <sound/pcm_oss.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #endif |
| 40 | |
| 41 | /* |
| 42 | * Hardware (lowlevel) section |
| 43 | */ |
| 44 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 45 | struct snd_pcm_hardware { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 46 | unsigned int info; /* SNDRV_PCM_INFO_* */ |
| 47 | u64 formats; /* SNDRV_PCM_FMTBIT_* */ |
| 48 | unsigned int rates; /* SNDRV_PCM_RATE_* */ |
| 49 | unsigned int rate_min; /* min rate */ |
| 50 | unsigned int rate_max; /* max rate */ |
| 51 | unsigned int channels_min; /* min channels */ |
| 52 | unsigned int channels_max; /* max channels */ |
| 53 | size_t buffer_bytes_max; /* max buffer size */ |
| 54 | size_t period_bytes_min; /* min period size */ |
| 55 | size_t period_bytes_max; /* max period size */ |
| 56 | unsigned int periods_min; /* min # of periods */ |
| 57 | unsigned int periods_max; /* max # of periods */ |
| 58 | size_t fifo_size; /* fifo size in bytes */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 59 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | |
Randy Dunlap | e0e6ce0 | 2006-12-07 08:22:50 +0100 | [diff] [blame] | 61 | struct snd_pcm_substream; |
| 62 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 63 | struct snd_pcm_ops { |
| 64 | int (*open)(struct snd_pcm_substream *substream); |
| 65 | int (*close)(struct snd_pcm_substream *substream); |
| 66 | int (*ioctl)(struct snd_pcm_substream * substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | unsigned int cmd, void *arg); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 68 | int (*hw_params)(struct snd_pcm_substream *substream, |
| 69 | struct snd_pcm_hw_params *params); |
| 70 | int (*hw_free)(struct snd_pcm_substream *substream); |
| 71 | int (*prepare)(struct snd_pcm_substream *substream); |
| 72 | int (*trigger)(struct snd_pcm_substream *substream, int cmd); |
| 73 | snd_pcm_uframes_t (*pointer)(struct snd_pcm_substream *substream); |
Pierre-Louis Bossart | 4eeaaea | 2012-10-22 16:42:15 -0500 | [diff] [blame] | 74 | int (*wall_clock)(struct snd_pcm_substream *substream, |
| 75 | struct timespec *audio_ts); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 76 | int (*copy)(struct snd_pcm_substream *substream, int channel, |
| 77 | snd_pcm_uframes_t pos, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | void __user *buf, snd_pcm_uframes_t count); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 79 | int (*silence)(struct snd_pcm_substream *substream, int channel, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | snd_pcm_uframes_t pos, snd_pcm_uframes_t count); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 81 | struct page *(*page)(struct snd_pcm_substream *substream, |
| 82 | unsigned long offset); |
| 83 | int (*mmap)(struct snd_pcm_substream *substream, struct vm_area_struct *vma); |
| 84 | int (*ack)(struct snd_pcm_substream *substream); |
| 85 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | /* |
| 88 | * |
| 89 | */ |
| 90 | |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 91 | #if defined(CONFIG_SND_DYNAMIC_MINORS) |
| 92 | #define SNDRV_PCM_DEVICES (SNDRV_OS_MINORS-2) |
| 93 | #else |
| 94 | #define SNDRV_PCM_DEVICES 8 |
| 95 | #endif |
Jaroslav Kysela | 896e6cc | 2008-08-01 13:36:04 +0200 | [diff] [blame] | 96 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | #define SNDRV_PCM_IOCTL1_RESET 0 |
| 98 | #define SNDRV_PCM_IOCTL1_INFO 1 |
| 99 | #define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2 |
| 100 | #define SNDRV_PCM_IOCTL1_GSTATE 3 |
Jaroslav Kysela | 8bea869 | 2009-04-27 09:44:40 +0200 | [diff] [blame] | 101 | #define SNDRV_PCM_IOCTL1_FIFO_SIZE 4 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | #define SNDRV_PCM_TRIGGER_STOP 0 |
| 104 | #define SNDRV_PCM_TRIGGER_START 1 |
| 105 | #define SNDRV_PCM_TRIGGER_PAUSE_PUSH 3 |
| 106 | #define SNDRV_PCM_TRIGGER_PAUSE_RELEASE 4 |
| 107 | #define SNDRV_PCM_TRIGGER_SUSPEND 5 |
| 108 | #define SNDRV_PCM_TRIGGER_RESUME 6 |
Libin Yang | 48d8829 | 2014-12-31 22:09:54 +0800 | [diff] [blame] | 109 | #define SNDRV_PCM_TRIGGER_DRAIN 7 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | |
| 111 | #define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1) |
| 112 | |
| 113 | /* If you change this don't forget to change rates[] table in pcm_native.c */ |
| 114 | #define SNDRV_PCM_RATE_5512 (1<<0) /* 5512Hz */ |
| 115 | #define SNDRV_PCM_RATE_8000 (1<<1) /* 8000Hz */ |
| 116 | #define SNDRV_PCM_RATE_11025 (1<<2) /* 11025Hz */ |
| 117 | #define SNDRV_PCM_RATE_16000 (1<<3) /* 16000Hz */ |
| 118 | #define SNDRV_PCM_RATE_22050 (1<<4) /* 22050Hz */ |
| 119 | #define SNDRV_PCM_RATE_32000 (1<<5) /* 32000Hz */ |
| 120 | #define SNDRV_PCM_RATE_44100 (1<<6) /* 44100Hz */ |
| 121 | #define SNDRV_PCM_RATE_48000 (1<<7) /* 48000Hz */ |
| 122 | #define SNDRV_PCM_RATE_64000 (1<<8) /* 64000Hz */ |
| 123 | #define SNDRV_PCM_RATE_88200 (1<<9) /* 88200Hz */ |
| 124 | #define SNDRV_PCM_RATE_96000 (1<<10) /* 96000Hz */ |
| 125 | #define SNDRV_PCM_RATE_176400 (1<<11) /* 176400Hz */ |
| 126 | #define SNDRV_PCM_RATE_192000 (1<<12) /* 192000Hz */ |
| 127 | |
| 128 | #define SNDRV_PCM_RATE_CONTINUOUS (1<<30) /* continuous range */ |
| 129 | #define SNDRV_PCM_RATE_KNOT (1<<31) /* supports more non-continuos rates */ |
| 130 | |
| 131 | #define SNDRV_PCM_RATE_8000_44100 (SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_11025|\ |
| 132 | SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_22050|\ |
| 133 | SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100) |
| 134 | #define SNDRV_PCM_RATE_8000_48000 (SNDRV_PCM_RATE_8000_44100|SNDRV_PCM_RATE_48000) |
| 135 | #define SNDRV_PCM_RATE_8000_96000 (SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_64000|\ |
| 136 | SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000) |
| 137 | #define SNDRV_PCM_RATE_8000_192000 (SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\ |
| 138 | SNDRV_PCM_RATE_192000) |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 139 | #define _SNDRV_PCM_FMTBIT(fmt) (1ULL << (__force int)SNDRV_PCM_FORMAT_##fmt) |
| 140 | #define SNDRV_PCM_FMTBIT_S8 _SNDRV_PCM_FMTBIT(S8) |
| 141 | #define SNDRV_PCM_FMTBIT_U8 _SNDRV_PCM_FMTBIT(U8) |
| 142 | #define SNDRV_PCM_FMTBIT_S16_LE _SNDRV_PCM_FMTBIT(S16_LE) |
| 143 | #define SNDRV_PCM_FMTBIT_S16_BE _SNDRV_PCM_FMTBIT(S16_BE) |
| 144 | #define SNDRV_PCM_FMTBIT_U16_LE _SNDRV_PCM_FMTBIT(U16_LE) |
| 145 | #define SNDRV_PCM_FMTBIT_U16_BE _SNDRV_PCM_FMTBIT(U16_BE) |
| 146 | #define SNDRV_PCM_FMTBIT_S24_LE _SNDRV_PCM_FMTBIT(S24_LE) |
| 147 | #define SNDRV_PCM_FMTBIT_S24_BE _SNDRV_PCM_FMTBIT(S24_BE) |
| 148 | #define SNDRV_PCM_FMTBIT_U24_LE _SNDRV_PCM_FMTBIT(U24_LE) |
| 149 | #define SNDRV_PCM_FMTBIT_U24_BE _SNDRV_PCM_FMTBIT(U24_BE) |
| 150 | #define SNDRV_PCM_FMTBIT_S32_LE _SNDRV_PCM_FMTBIT(S32_LE) |
| 151 | #define SNDRV_PCM_FMTBIT_S32_BE _SNDRV_PCM_FMTBIT(S32_BE) |
| 152 | #define SNDRV_PCM_FMTBIT_U32_LE _SNDRV_PCM_FMTBIT(U32_LE) |
| 153 | #define SNDRV_PCM_FMTBIT_U32_BE _SNDRV_PCM_FMTBIT(U32_BE) |
| 154 | #define SNDRV_PCM_FMTBIT_FLOAT_LE _SNDRV_PCM_FMTBIT(FLOAT_LE) |
| 155 | #define SNDRV_PCM_FMTBIT_FLOAT_BE _SNDRV_PCM_FMTBIT(FLOAT_BE) |
| 156 | #define SNDRV_PCM_FMTBIT_FLOAT64_LE _SNDRV_PCM_FMTBIT(FLOAT64_LE) |
| 157 | #define SNDRV_PCM_FMTBIT_FLOAT64_BE _SNDRV_PCM_FMTBIT(FLOAT64_BE) |
| 158 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_LE) |
| 159 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE _SNDRV_PCM_FMTBIT(IEC958_SUBFRAME_BE) |
| 160 | #define SNDRV_PCM_FMTBIT_MU_LAW _SNDRV_PCM_FMTBIT(MU_LAW) |
| 161 | #define SNDRV_PCM_FMTBIT_A_LAW _SNDRV_PCM_FMTBIT(A_LAW) |
| 162 | #define SNDRV_PCM_FMTBIT_IMA_ADPCM _SNDRV_PCM_FMTBIT(IMA_ADPCM) |
| 163 | #define SNDRV_PCM_FMTBIT_MPEG _SNDRV_PCM_FMTBIT(MPEG) |
| 164 | #define SNDRV_PCM_FMTBIT_GSM _SNDRV_PCM_FMTBIT(GSM) |
| 165 | #define SNDRV_PCM_FMTBIT_SPECIAL _SNDRV_PCM_FMTBIT(SPECIAL) |
| 166 | #define SNDRV_PCM_FMTBIT_S24_3LE _SNDRV_PCM_FMTBIT(S24_3LE) |
| 167 | #define SNDRV_PCM_FMTBIT_U24_3LE _SNDRV_PCM_FMTBIT(U24_3LE) |
| 168 | #define SNDRV_PCM_FMTBIT_S24_3BE _SNDRV_PCM_FMTBIT(S24_3BE) |
| 169 | #define SNDRV_PCM_FMTBIT_U24_3BE _SNDRV_PCM_FMTBIT(U24_3BE) |
| 170 | #define SNDRV_PCM_FMTBIT_S20_3LE _SNDRV_PCM_FMTBIT(S20_3LE) |
| 171 | #define SNDRV_PCM_FMTBIT_U20_3LE _SNDRV_PCM_FMTBIT(U20_3LE) |
| 172 | #define SNDRV_PCM_FMTBIT_S20_3BE _SNDRV_PCM_FMTBIT(S20_3BE) |
| 173 | #define SNDRV_PCM_FMTBIT_U20_3BE _SNDRV_PCM_FMTBIT(U20_3BE) |
| 174 | #define SNDRV_PCM_FMTBIT_S18_3LE _SNDRV_PCM_FMTBIT(S18_3LE) |
| 175 | #define SNDRV_PCM_FMTBIT_U18_3LE _SNDRV_PCM_FMTBIT(U18_3LE) |
| 176 | #define SNDRV_PCM_FMTBIT_S18_3BE _SNDRV_PCM_FMTBIT(S18_3BE) |
| 177 | #define SNDRV_PCM_FMTBIT_U18_3BE _SNDRV_PCM_FMTBIT(U18_3BE) |
| 178 | #define SNDRV_PCM_FMTBIT_G723_24 _SNDRV_PCM_FMTBIT(G723_24) |
| 179 | #define SNDRV_PCM_FMTBIT_G723_24_1B _SNDRV_PCM_FMTBIT(G723_24_1B) |
| 180 | #define SNDRV_PCM_FMTBIT_G723_40 _SNDRV_PCM_FMTBIT(G723_40) |
| 181 | #define SNDRV_PCM_FMTBIT_G723_40_1B _SNDRV_PCM_FMTBIT(G723_40_1B) |
Daniel Mack | ef7a4f9 | 2013-04-17 00:01:36 +0800 | [diff] [blame] | 182 | #define SNDRV_PCM_FMTBIT_DSD_U8 _SNDRV_PCM_FMTBIT(DSD_U8) |
| 183 | #define SNDRV_PCM_FMTBIT_DSD_U16_LE _SNDRV_PCM_FMTBIT(DSD_U16_LE) |
Jurgen Kramer | d4288d3 | 2014-09-05 10:47:56 +0200 | [diff] [blame] | 184 | #define SNDRV_PCM_FMTBIT_DSD_U32_LE _SNDRV_PCM_FMTBIT(DSD_U32_LE) |
Jussi Laako | d42472e | 2014-11-21 16:04:46 +0200 | [diff] [blame] | 185 | #define SNDRV_PCM_FMTBIT_DSD_U16_BE _SNDRV_PCM_FMTBIT(DSD_U16_BE) |
| 186 | #define SNDRV_PCM_FMTBIT_DSD_U32_BE _SNDRV_PCM_FMTBIT(DSD_U32_BE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
| 188 | #ifdef SNDRV_LITTLE_ENDIAN |
| 189 | #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE |
| 190 | #define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_LE |
| 191 | #define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_LE |
| 192 | #define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_LE |
| 193 | #define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_LE |
| 194 | #define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_LE |
| 195 | #define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_LE |
| 196 | #define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_LE |
| 197 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE |
| 198 | #endif |
| 199 | #ifdef SNDRV_BIG_ENDIAN |
| 200 | #define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_BE |
| 201 | #define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_BE |
| 202 | #define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_BE |
| 203 | #define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_BE |
| 204 | #define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_BE |
| 205 | #define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_BE |
| 206 | #define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_BE |
| 207 | #define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_BE |
| 208 | #define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE |
| 209 | #endif |
| 210 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 211 | struct snd_pcm_file { |
| 212 | struct snd_pcm_substream *substream; |
Takashi Iwai | 548a648 | 2006-07-31 16:51:51 +0200 | [diff] [blame] | 213 | int no_compat_mmap; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | }; |
| 215 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 216 | struct snd_pcm_hw_rule; |
| 217 | typedef int (*snd_pcm_hw_rule_func_t)(struct snd_pcm_hw_params *params, |
| 218 | struct snd_pcm_hw_rule *rule); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 220 | struct snd_pcm_hw_rule { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | unsigned int cond; |
| 222 | snd_pcm_hw_rule_func_t func; |
| 223 | int var; |
| 224 | int deps[4]; |
| 225 | void *private; |
| 226 | }; |
| 227 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 228 | struct snd_pcm_hw_constraints { |
| 229 | struct snd_mask masks[SNDRV_PCM_HW_PARAM_LAST_MASK - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 231 | struct snd_interval intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; |
| 233 | unsigned int rules_num; |
| 234 | unsigned int rules_all; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 235 | struct snd_pcm_hw_rule *rules; |
| 236 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 238 | static inline struct snd_mask *constrs_mask(struct snd_pcm_hw_constraints *constrs, |
| 239 | snd_pcm_hw_param_t var) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | { |
| 241 | return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
| 242 | } |
| 243 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 244 | static inline struct snd_interval *constrs_interval(struct snd_pcm_hw_constraints *constrs, |
| 245 | snd_pcm_hw_param_t var) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | { |
| 247 | return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
| 248 | } |
| 249 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 250 | struct snd_ratnum { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | unsigned int num; |
| 252 | unsigned int den_min, den_max, den_step; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 253 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 255 | struct snd_ratden { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 256 | unsigned int num_min, num_max, num_step; |
| 257 | unsigned int den; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 258 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 260 | struct snd_pcm_hw_constraint_ratnums { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | int nrats; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 262 | struct snd_ratnum *rats; |
| 263 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 265 | struct snd_pcm_hw_constraint_ratdens { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | int nrats; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 267 | struct snd_ratden *rats; |
| 268 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 270 | struct snd_pcm_hw_constraint_list { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 271 | unsigned int count; |
Mark Brown | 4af87a9 | 2012-03-14 19:48:43 +0000 | [diff] [blame] | 272 | const unsigned int *list; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | unsigned int mask; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 274 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | |
Peter Rosin | f66f898 | 2015-01-28 15:16:06 +0100 | [diff] [blame] | 276 | struct snd_pcm_hw_constraint_ranges { |
| 277 | unsigned int count; |
| 278 | const struct snd_interval *ranges; |
| 279 | unsigned int mask; |
| 280 | }; |
| 281 | |
Jaroslav Kysela | 4d96eb2 | 2009-12-20 11:47:57 +0100 | [diff] [blame] | 282 | struct snd_pcm_hwptr_log; |
| 283 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 284 | struct snd_pcm_runtime { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | /* -- Status -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 286 | struct snd_pcm_substream *trigger_master; |
Takashi Iwai | 07799e7 | 2005-10-10 11:49:49 +0200 | [diff] [blame] | 287 | struct timespec trigger_tstamp; /* trigger timestamp */ |
Pierre-Louis Bossart | 2b79d7a | 2015-02-06 15:55:51 -0600 | [diff] [blame] | 288 | bool trigger_tstamp_latched; /* trigger timestamp latched in low-level driver/hardware */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | int overrange; |
| 290 | snd_pcm_uframes_t avail_max; |
| 291 | snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */ |
Jaroslav Kysela | e763692 | 2010-01-26 17:08:24 +0100 | [diff] [blame] | 292 | snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time */ |
Jaroslav Kysela | bbf6ad1 | 2009-04-10 12:28:58 +0200 | [diff] [blame] | 293 | unsigned long hw_ptr_jiffies; /* Time when hw_ptr is updated */ |
Jaroslav Kysela | bd76af0 | 2010-08-18 14:16:54 +0200 | [diff] [blame] | 294 | unsigned long hw_ptr_buffer_jiffies; /* buffer time in jiffies */ |
Takashi Iwai | 4bbe1dd | 2008-10-13 03:07:14 +0200 | [diff] [blame] | 295 | snd_pcm_sframes_t delay; /* extra delay; typically FIFO size */ |
Pierre-Louis Bossart | 0e8014d | 2012-10-22 16:42:14 -0500 | [diff] [blame] | 296 | u64 hw_ptr_wrap; /* offset for hw_ptr due to boundary wrap-around */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | |
| 298 | /* -- HW params -- */ |
| 299 | snd_pcm_access_t access; /* access mode */ |
| 300 | snd_pcm_format_t format; /* SNDRV_PCM_FORMAT_* */ |
| 301 | snd_pcm_subformat_t subformat; /* subformat */ |
| 302 | unsigned int rate; /* rate in Hz */ |
| 303 | unsigned int channels; /* channels */ |
| 304 | snd_pcm_uframes_t period_size; /* period size */ |
| 305 | unsigned int periods; /* periods */ |
| 306 | snd_pcm_uframes_t buffer_size; /* buffer size */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | snd_pcm_uframes_t min_align; /* Min alignment for the format */ |
| 308 | size_t byte_align; |
| 309 | unsigned int frame_bits; |
| 310 | unsigned int sample_bits; |
| 311 | unsigned int info; |
| 312 | unsigned int rate_num; |
| 313 | unsigned int rate_den; |
Clemens Ladisch | ab69a49 | 2010-11-15 10:46:23 +0100 | [diff] [blame] | 314 | unsigned int no_period_wakeup: 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | |
| 316 | /* -- SW params -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 317 | int tstamp_mode; /* mmap timestamp is updated */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 318 | unsigned int period_step; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | snd_pcm_uframes_t start_threshold; |
| 320 | snd_pcm_uframes_t stop_threshold; |
| 321 | snd_pcm_uframes_t silence_threshold; /* Silence filling happens when |
| 322 | noise is nearest than this */ |
| 323 | snd_pcm_uframes_t silence_size; /* Silence filling size */ |
| 324 | snd_pcm_uframes_t boundary; /* pointers wrap point */ |
| 325 | |
| 326 | snd_pcm_uframes_t silence_start; /* starting pointer to silence area */ |
| 327 | snd_pcm_uframes_t silence_filled; /* size filled with silence */ |
| 328 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 329 | union snd_pcm_sync_id sync; /* hardware synchronization ID */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 330 | |
| 331 | /* -- mmap -- */ |
Takashi Iwai | 503fc85 | 2007-09-11 00:35:06 +0200 | [diff] [blame] | 332 | struct snd_pcm_mmap_status *status; |
| 333 | struct snd_pcm_mmap_control *control; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 334 | |
| 335 | /* -- locking / scheduling -- */ |
David Dillow | 5daeba3 | 2010-06-27 00:13:20 +0200 | [diff] [blame] | 336 | snd_pcm_uframes_t twake; /* do transfer (!poll) wakeup if non-zero */ |
Jaroslav Kysela | c91a988 | 2010-01-21 10:32:15 +0100 | [diff] [blame] | 337 | wait_queue_head_t sleep; /* poll sleep */ |
| 338 | wait_queue_head_t tsleep; /* transfer sleep */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 339 | struct fasync_struct *fasync; |
| 340 | |
| 341 | /* -- private section -- */ |
| 342 | void *private_data; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 343 | void (*private_free)(struct snd_pcm_runtime *runtime); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 344 | |
| 345 | /* -- hardware description -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 346 | struct snd_pcm_hardware hw; |
| 347 | struct snd_pcm_hw_constraints hw_constraints; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 348 | |
| 349 | /* -- interrupt callbacks -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 350 | void (*transfer_ack_begin)(struct snd_pcm_substream *substream); |
| 351 | void (*transfer_ack_end)(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 352 | |
| 353 | /* -- timer -- */ |
| 354 | unsigned int timer_resolution; /* timer resolution */ |
Jaroslav Kysela | b751eef | 2007-12-13 10:19:42 +0100 | [diff] [blame] | 355 | int tstamp_type; /* timestamp type */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | |
| 357 | /* -- DMA -- */ |
| 358 | unsigned char *dma_area; /* DMA area */ |
| 359 | dma_addr_t dma_addr; /* physical bus address (not accessible from main CPU) */ |
| 360 | size_t dma_bytes; /* size of DMA area */ |
| 361 | |
| 362 | struct snd_dma_buffer *dma_buffer_p; /* allocated buffer */ |
| 363 | |
| 364 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 365 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 366 | struct snd_pcm_oss_runtime oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | #endif |
Jaroslav Kysela | 4d96eb2 | 2009-12-20 11:47:57 +0100 | [diff] [blame] | 368 | |
| 369 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
| 370 | struct snd_pcm_hwptr_log *hwptr_log; |
| 371 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | }; |
| 373 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 374 | struct snd_pcm_group { /* keep linked substreams */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | spinlock_t lock; |
Takashi Iwai | 257f8cc | 2014-08-29 15:32:29 +0200 | [diff] [blame] | 376 | struct mutex mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | struct list_head substreams; |
| 378 | int count; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 379 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 380 | |
Clemens Ladisch | e7373b7 | 2009-11-10 10:13:30 +0100 | [diff] [blame] | 381 | struct pid; |
| 382 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 383 | struct snd_pcm_substream { |
| 384 | struct snd_pcm *pcm; |
| 385 | struct snd_pcm_str *pstr; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | void *private_data; /* copied from pcm->private_data */ |
| 387 | int number; |
| 388 | char name[32]; /* substream name */ |
| 389 | int stream; /* stream (direction) */ |
Jean Pihet | cc74998 | 2011-08-25 15:35:12 +0200 | [diff] [blame] | 390 | struct pm_qos_request latency_pm_qos_req; /* pm_qos request */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | size_t buffer_bytes_max; /* limit ring buffer size */ |
| 392 | struct snd_dma_buffer dma_buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 393 | size_t dma_max; |
| 394 | /* -- hardware operations -- */ |
Lars-Peter Clausen | e6c2e7e | 2013-05-24 15:18:10 +0200 | [diff] [blame] | 395 | const struct snd_pcm_ops *ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | /* -- runtime information -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 397 | struct snd_pcm_runtime *runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 398 | /* -- timer section -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 399 | struct snd_timer *timer; /* timer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | unsigned timer_running: 1; /* time is running */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | /* -- next substream -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 402 | struct snd_pcm_substream *next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | /* -- linked substreams -- */ |
| 404 | struct list_head link_list; /* linked list member */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 405 | struct snd_pcm_group self_group; /* fake group for non linked substream (with substream lock inside) */ |
| 406 | struct snd_pcm_group *group; /* pointer to current group */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 407 | /* -- assigned files -- */ |
Takashi Iwai | 1576274 | 2006-04-06 19:47:42 +0200 | [diff] [blame] | 408 | void *file; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 409 | int ref_count; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 410 | atomic_t mmap_count; |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 411 | unsigned int f_flags; |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 412 | void (*pcm_release)(struct snd_pcm_substream *); |
Clemens Ladisch | e7373b7 | 2009-11-10 10:13:30 +0100 | [diff] [blame] | 413 | struct pid *pid; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 414 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 415 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 416 | struct snd_pcm_oss_substream oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | #endif |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 418 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 419 | struct snd_info_entry *proc_root; |
| 420 | struct snd_info_entry *proc_info_entry; |
| 421 | struct snd_info_entry *proc_hw_params_entry; |
| 422 | struct snd_info_entry *proc_sw_params_entry; |
| 423 | struct snd_info_entry *proc_status_entry; |
| 424 | struct snd_info_entry *proc_prealloc_entry; |
Jaroslav Kysela | c7132ae | 2006-10-06 15:12:29 +0200 | [diff] [blame] | 425 | struct snd_info_entry *proc_prealloc_max_entry; |
Takashi Iwai | 2b30d41 | 2014-11-04 14:02:40 +0100 | [diff] [blame] | 426 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
| 427 | struct snd_info_entry *proc_xrun_injection_entry; |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 428 | #endif |
Takashi Iwai | 2b30d41 | 2014-11-04 14:02:40 +0100 | [diff] [blame] | 429 | #endif /* CONFIG_SND_VERBOSE_PROCFS */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 430 | /* misc flags */ |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 431 | unsigned int hw_opened: 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | }; |
| 433 | |
Takashi Iwai | 0df63e4 | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 434 | #define SUBSTREAM_BUSY(substream) ((substream)->ref_count > 0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | |
| 436 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 437 | struct snd_pcm_str { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 438 | int stream; /* stream (direction) */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 439 | struct snd_pcm *pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | /* -- substreams -- */ |
| 441 | unsigned int substream_count; |
| 442 | unsigned int substream_opened; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 443 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
| 445 | /* -- OSS things -- */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 446 | struct snd_pcm_oss_stream oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 447 | #endif |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 448 | #ifdef CONFIG_SND_VERBOSE_PROCFS |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 449 | struct snd_info_entry *proc_root; |
| 450 | struct snd_info_entry *proc_info_entry; |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 451 | #ifdef CONFIG_SND_PCM_XRUN_DEBUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | unsigned int xrun_debug; /* 0 = disabled, 1 = verbose, 2 = stacktrace */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 453 | struct snd_info_entry *proc_xrun_debug_entry; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 454 | #endif |
Takashi Iwai | b7d90a3 | 2006-04-25 12:56:04 +0200 | [diff] [blame] | 455 | #endif |
Takashi Iwai | 2d3391e | 2012-07-27 18:27:00 +0200 | [diff] [blame] | 456 | struct snd_kcontrol *chmap_kctl; /* channel-mapping controls */ |
Takashi Iwai | ef46c7a | 2015-01-29 17:32:26 +0100 | [diff] [blame] | 457 | struct device dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 458 | }; |
| 459 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 460 | struct snd_pcm { |
| 461 | struct snd_card *card; |
Clemens Ladisch | f87135f | 2005-11-20 14:06:59 +0100 | [diff] [blame] | 462 | struct list_head list; |
Pawel MOLL | f90c06a | 2008-07-30 12:46:40 +0100 | [diff] [blame] | 463 | int device; /* device number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 464 | unsigned int info_flags; |
| 465 | unsigned short dev_class; |
| 466 | unsigned short dev_subclass; |
| 467 | char id[64]; |
| 468 | char name[80]; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 469 | struct snd_pcm_str streams[2]; |
Ingo Molnar | 1a60d4c | 2006-01-16 16:29:08 +0100 | [diff] [blame] | 470 | struct mutex open_mutex; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 471 | wait_queue_head_t open_wait; |
| 472 | void *private_data; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 473 | void (*private_free) (struct snd_pcm *pcm); |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 474 | bool internal; /* pcm is for internal use only */ |
Takashi Iwai | 257f8cc | 2014-08-29 15:32:29 +0200 | [diff] [blame] | 475 | bool nonatomic; /* whole PCM operations are in non-atomic context */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 476 | #if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 477 | struct snd_pcm_oss oss; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 478 | #endif |
| 479 | }; |
| 480 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 481 | struct snd_pcm_notify { |
| 482 | int (*n_register) (struct snd_pcm * pcm); |
| 483 | int (*n_disconnect) (struct snd_pcm * pcm); |
| 484 | int (*n_unregister) (struct snd_pcm * pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | struct list_head list; |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 486 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | |
| 488 | /* |
| 489 | * Registering |
| 490 | */ |
| 491 | |
Arjan van de Ven | 5404732 | 2007-02-12 00:55:28 -0800 | [diff] [blame] | 492 | extern const struct file_operations snd_pcm_f_ops[2]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | |
Tim Blechmann | e616165 | 2009-02-05 13:01:54 +0100 | [diff] [blame] | 494 | int snd_pcm_new(struct snd_card *card, const char *id, int device, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 495 | int playback_count, int capture_count, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 496 | struct snd_pcm **rpcm); |
Liam Girdwood | 945e503 | 2012-02-08 20:33:31 +0000 | [diff] [blame] | 497 | int snd_pcm_new_internal(struct snd_card *card, const char *id, int device, |
| 498 | int playback_count, int capture_count, |
| 499 | struct snd_pcm **rpcm); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 500 | 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] | 501 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 502 | int snd_pcm_notify(struct snd_pcm_notify *notify, int nfree); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | |
| 504 | /* |
| 505 | * Native I/O |
| 506 | */ |
| 507 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 508 | int snd_pcm_info(struct snd_pcm_substream *substream, struct snd_pcm_info *info); |
| 509 | int snd_pcm_info_user(struct snd_pcm_substream *substream, |
| 510 | struct snd_pcm_info __user *info); |
| 511 | int snd_pcm_status(struct snd_pcm_substream *substream, |
| 512 | struct snd_pcm_status *status); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 513 | int snd_pcm_start(struct snd_pcm_substream *substream); |
Clemens Ladisch | fea952e | 2011-02-14 11:00:47 +0100 | [diff] [blame] | 514 | int snd_pcm_stop(struct snd_pcm_substream *substream, snd_pcm_state_t status); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 515 | int snd_pcm_drain_done(struct snd_pcm_substream *substream); |
Takashi Iwai | 1fb8510 | 2014-11-07 17:08:28 +0100 | [diff] [blame] | 516 | int snd_pcm_stop_xrun(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 517 | #ifdef CONFIG_PM |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 518 | int snd_pcm_suspend(struct snd_pcm_substream *substream); |
| 519 | int snd_pcm_suspend_all(struct snd_pcm *pcm); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 520 | #endif |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 521 | int snd_pcm_kernel_ioctl(struct snd_pcm_substream *substream, unsigned int cmd, void *arg); |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 522 | int snd_pcm_open_substream(struct snd_pcm *pcm, int stream, struct file *file, |
| 523 | struct snd_pcm_substream **rsubstream); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 524 | void snd_pcm_release_substream(struct snd_pcm_substream *substream); |
Takashi Iwai | 3bf75f9 | 2006-03-27 16:40:49 +0200 | [diff] [blame] | 525 | int snd_pcm_attach_substream(struct snd_pcm *pcm, int stream, struct file *file, |
| 526 | struct snd_pcm_substream **rsubstream); |
| 527 | void snd_pcm_detach_substream(struct snd_pcm_substream *substream); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 528 | 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] | 529 | |
Eliot Blennerhassett | acb03d4 | 2011-07-23 12:36:25 +1200 | [diff] [blame] | 530 | |
| 531 | #ifdef CONFIG_SND_DEBUG |
| 532 | void snd_pcm_debug_name(struct snd_pcm_substream *substream, |
| 533 | char *name, size_t len); |
| 534 | #else |
| 535 | static inline void |
| 536 | snd_pcm_debug_name(struct snd_pcm_substream *substream, char *buf, size_t size) |
| 537 | { |
| 538 | *buf = 0; |
| 539 | } |
| 540 | #endif |
| 541 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 542 | /* |
| 543 | * PCM library |
| 544 | */ |
| 545 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 546 | /** |
| 547 | * snd_pcm_stream_linked - Check whether the substream is linked with others |
| 548 | * @substream: substream to check |
| 549 | * |
| 550 | * Returns true if the given substream is being linked with others. |
| 551 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 552 | static inline int snd_pcm_stream_linked(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | { |
| 554 | return substream->group != &substream->self_group; |
| 555 | } |
| 556 | |
Takashi Iwai | 7af142f | 2014-09-01 11:19:37 +0200 | [diff] [blame] | 557 | void snd_pcm_stream_lock(struct snd_pcm_substream *substream); |
| 558 | void snd_pcm_stream_unlock(struct snd_pcm_substream *substream); |
| 559 | void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream); |
| 560 | void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream); |
| 561 | unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream); |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 562 | |
| 563 | /** |
| 564 | * snd_pcm_stream_lock_irqsave - Lock the PCM stream |
| 565 | * @substream: PCM substream |
| 566 | * @flags: irq flags |
| 567 | * |
| 568 | * This locks the PCM stream like snd_pcm_stream_lock() but with the local |
| 569 | * IRQ (only when nonatomic is false). In nonatomic case, this is identical |
| 570 | * as snd_pcm_stream_lock(). |
| 571 | */ |
Takashi Iwai | 7af142f | 2014-09-01 11:19:37 +0200 | [diff] [blame] | 572 | #define snd_pcm_stream_lock_irqsave(substream, flags) \ |
| 573 | do { \ |
| 574 | typecheck(unsigned long, flags); \ |
| 575 | flags = _snd_pcm_stream_lock_irqsave(substream); \ |
| 576 | } while (0) |
| 577 | void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream, |
| 578 | unsigned long flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 579 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 580 | /** |
| 581 | * snd_pcm_group_for_each_entry - iterate over the linked substreams |
| 582 | * @s: the iterator |
| 583 | * @substream: the substream |
| 584 | * |
| 585 | * Iterate over the all linked substreams to the given @substream. |
| 586 | * When @substream isn't linked with any others, this gives returns @substream |
| 587 | * itself once. |
| 588 | */ |
Takashi Iwai | ef991b9 | 2007-02-22 12:52:53 +0100 | [diff] [blame] | 589 | #define snd_pcm_group_for_each_entry(s, substream) \ |
| 590 | list_for_each_entry(s, &substream->group->substreams, link_list) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 592 | /** |
| 593 | * snd_pcm_running - Check whether the substream is in a running state |
| 594 | * @substream: substream to check |
| 595 | * |
| 596 | * Returns true if the given substream is in the state RUNNING, or in the |
| 597 | * state DRAINING for playback. |
| 598 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 599 | static inline int snd_pcm_running(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | { |
| 601 | return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING || |
| 602 | (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING && |
| 603 | substream->stream == SNDRV_PCM_STREAM_PLAYBACK)); |
| 604 | } |
| 605 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 606 | /** |
| 607 | * bytes_to_samples - Unit conversion of the size from bytes to samples |
| 608 | * @runtime: PCM runtime instance |
| 609 | * @size: size in bytes |
| 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 | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 616 | /** |
| 617 | * bytes_to_frames - Unit conversion of the size from bytes to frames |
| 618 | * @runtime: PCM runtime instance |
| 619 | * @size: size in bytes |
| 620 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 621 | 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] | 622 | { |
| 623 | return size * 8 / runtime->frame_bits; |
| 624 | } |
| 625 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 626 | /** |
| 627 | * samples_to_bytes - Unit conversion of the size from samples to bytes |
| 628 | * @runtime: PCM runtime instance |
| 629 | * @size: size in samples |
| 630 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 631 | 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] | 632 | { |
| 633 | return size * runtime->sample_bits / 8; |
| 634 | } |
| 635 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 636 | /** |
| 637 | * frames_to_bytes - Unit conversion of the size from frames to bytes |
| 638 | * @runtime: PCM runtime instance |
| 639 | * @size: size in frames |
| 640 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 641 | 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] | 642 | { |
| 643 | return size * runtime->frame_bits / 8; |
| 644 | } |
| 645 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 646 | /** |
| 647 | * frame_aligned - Check whether the byte size is aligned to frames |
| 648 | * @runtime: PCM runtime instance |
| 649 | * @bytes: size in bytes |
| 650 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 651 | 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] | 652 | { |
| 653 | return bytes % runtime->byte_align == 0; |
| 654 | } |
| 655 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 656 | /** |
| 657 | * snd_pcm_lib_buffer_bytes - Get the buffer size of the current PCM in bytes |
| 658 | * @substream: PCM substream |
| 659 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 660 | 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] | 661 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 662 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 663 | return frames_to_bytes(runtime, runtime->buffer_size); |
| 664 | } |
| 665 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 666 | /** |
| 667 | * snd_pcm_lib_period_bytes - Get the period size of the current PCM in bytes |
| 668 | * @substream: PCM substream |
| 669 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 670 | 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] | 671 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 672 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 673 | return frames_to_bytes(runtime, runtime->period_size); |
| 674 | } |
| 675 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 676 | /** |
| 677 | * snd_pcm_playback_avail - Get the available (writable) space for playback |
| 678 | * @runtime: PCM runtime instance |
| 679 | * |
| 680 | * Result is between 0 ... (boundary - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 681 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 682 | 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] | 683 | { |
| 684 | snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr; |
| 685 | if (avail < 0) |
| 686 | avail += runtime->boundary; |
| 687 | else if ((snd_pcm_uframes_t) avail >= runtime->boundary) |
| 688 | avail -= runtime->boundary; |
| 689 | return avail; |
| 690 | } |
| 691 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 692 | /** |
| 693 | * snd_pcm_playback_avail - Get the available (readable) space for capture |
| 694 | * @runtime: PCM runtime instance |
| 695 | * |
| 696 | * Result is between 0 ... (boundary - 1) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 697 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 698 | 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] | 699 | { |
| 700 | snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr; |
| 701 | if (avail < 0) |
| 702 | avail += runtime->boundary; |
| 703 | return avail; |
| 704 | } |
| 705 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 706 | /** |
| 707 | * snd_pcm_playback_hw_avail - Get the queued space for playback |
| 708 | * @runtime: PCM runtime instance |
| 709 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 710 | 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] | 711 | { |
| 712 | return runtime->buffer_size - snd_pcm_playback_avail(runtime); |
| 713 | } |
| 714 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 715 | /** |
| 716 | * snd_pcm_capture_hw_avail - Get the free space for capture |
| 717 | * @runtime: PCM runtime instance |
| 718 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 719 | 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] | 720 | { |
| 721 | return runtime->buffer_size - snd_pcm_capture_avail(runtime); |
| 722 | } |
| 723 | |
| 724 | /** |
| 725 | * snd_pcm_playback_ready - check whether the playback buffer is available |
| 726 | * @substream: the pcm substream instance |
| 727 | * |
| 728 | * Checks whether enough free space is available on the playback buffer. |
| 729 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 730 | * Return: Non-zero if available, or zero if not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 731 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 732 | static inline int snd_pcm_playback_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 733 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 734 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 735 | return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min; |
| 736 | } |
| 737 | |
| 738 | /** |
| 739 | * snd_pcm_capture_ready - check whether the capture buffer is available |
| 740 | * @substream: the pcm substream instance |
| 741 | * |
| 742 | * Checks whether enough capture data is available on the capture buffer. |
| 743 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 744 | * Return: Non-zero if available, or zero if not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 745 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 746 | static inline int snd_pcm_capture_ready(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 747 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 748 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 749 | return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min; |
| 750 | } |
| 751 | |
| 752 | /** |
| 753 | * snd_pcm_playback_data - check whether any data exists on the playback buffer |
| 754 | * @substream: the pcm substream instance |
| 755 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 756 | * Checks whether any data exists on the playback buffer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 757 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 758 | * Return: Non-zero if any data exists, or zero if not. If stop_threshold |
| 759 | * is bigger or equal to boundary, then this function returns always non-zero. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 760 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 761 | static inline int snd_pcm_playback_data(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 763 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 764 | |
| 765 | if (runtime->stop_threshold >= runtime->boundary) |
| 766 | return 1; |
| 767 | return snd_pcm_playback_avail(runtime) < runtime->buffer_size; |
| 768 | } |
| 769 | |
| 770 | /** |
| 771 | * snd_pcm_playback_empty - check whether the playback buffer is empty |
| 772 | * @substream: the pcm substream instance |
| 773 | * |
| 774 | * Checks whether the playback buffer is empty. |
| 775 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 776 | * Return: Non-zero if empty, or zero if not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 777 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 778 | static inline int snd_pcm_playback_empty(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 780 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 781 | return snd_pcm_playback_avail(runtime) >= runtime->buffer_size; |
| 782 | } |
| 783 | |
| 784 | /** |
| 785 | * snd_pcm_capture_empty - check whether the capture buffer is empty |
| 786 | * @substream: the pcm substream instance |
| 787 | * |
| 788 | * Checks whether the capture buffer is empty. |
| 789 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 790 | * Return: Non-zero if empty, or zero if not. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 791 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 792 | static inline int snd_pcm_capture_empty(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 793 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 794 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 795 | return snd_pcm_capture_avail(runtime) == 0; |
| 796 | } |
| 797 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 798 | /** |
| 799 | * snd_pcm_trigger_done - Mark the master substream |
| 800 | * @substream: the pcm substream instance |
| 801 | * @master: the linked master substream |
| 802 | * |
| 803 | * When multiple substreams of the same card are linked and the hardware |
| 804 | * supports the single-shot operation, the driver calls this in the loop |
| 805 | * in snd_pcm_group_for_each_entry() for marking the substream as "done". |
| 806 | * Then most of trigger operations are performed only to the given master |
| 807 | * substream. |
| 808 | * |
| 809 | * The trigger_master mark is cleared at timestamp updates at the end |
| 810 | * of trigger operations. |
| 811 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 812 | static inline void snd_pcm_trigger_done(struct snd_pcm_substream *substream, |
| 813 | struct snd_pcm_substream *master) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 814 | { |
| 815 | substream->runtime->trigger_master = master; |
| 816 | } |
| 817 | |
| 818 | static inline int hw_is_mask(int var) |
| 819 | { |
| 820 | return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK && |
| 821 | var <= SNDRV_PCM_HW_PARAM_LAST_MASK; |
| 822 | } |
| 823 | |
| 824 | static inline int hw_is_interval(int var) |
| 825 | { |
| 826 | return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL && |
| 827 | var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; |
| 828 | } |
| 829 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 830 | 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] | 831 | snd_pcm_hw_param_t var) |
| 832 | { |
| 833 | return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
| 834 | } |
| 835 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 836 | 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] | 837 | snd_pcm_hw_param_t var) |
| 838 | { |
| 839 | return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
| 840 | } |
| 841 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 842 | 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] | 843 | snd_pcm_hw_param_t var) |
| 844 | { |
Takashi Iwai | b9f09a4 | 2007-09-11 00:33:48 +0200 | [diff] [blame] | 845 | return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | } |
| 847 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 848 | 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] | 849 | snd_pcm_hw_param_t var) |
| 850 | { |
Takashi Iwai | b9f09a4 | 2007-09-11 00:33:48 +0200 | [diff] [blame] | 851 | return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 852 | } |
| 853 | |
Takashi Iwai | 85926e0 | 2014-10-30 15:06:13 +0100 | [diff] [blame] | 854 | /** |
| 855 | * params_channels - Get the number of channels from the hw params |
| 856 | * @p: hw params |
| 857 | */ |
| 858 | static inline unsigned int params_channels(const struct snd_pcm_hw_params *p) |
| 859 | { |
| 860 | return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_CHANNELS)->min; |
| 861 | } |
| 862 | |
| 863 | /** |
Lars-Peter Clausen | 62f64a8 | 2014-12-29 19:41:40 +0100 | [diff] [blame] | 864 | * params_rate - Get the sample rate from the hw params |
Takashi Iwai | 85926e0 | 2014-10-30 15:06:13 +0100 | [diff] [blame] | 865 | * @p: hw params |
| 866 | */ |
| 867 | static inline unsigned int params_rate(const struct snd_pcm_hw_params *p) |
| 868 | { |
| 869 | return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_RATE)->min; |
| 870 | } |
| 871 | |
| 872 | /** |
Lars-Peter Clausen | 62f64a8 | 2014-12-29 19:41:40 +0100 | [diff] [blame] | 873 | * params_period_size - Get the period size (in frames) from the hw params |
Takashi Iwai | 85926e0 | 2014-10-30 15:06:13 +0100 | [diff] [blame] | 874 | * @p: hw params |
| 875 | */ |
| 876 | static inline unsigned int params_period_size(const struct snd_pcm_hw_params *p) |
| 877 | { |
| 878 | return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min; |
| 879 | } |
| 880 | |
| 881 | /** |
Lars-Peter Clausen | 62f64a8 | 2014-12-29 19:41:40 +0100 | [diff] [blame] | 882 | * params_periods - Get the number of periods from the hw params |
Takashi Iwai | 85926e0 | 2014-10-30 15:06:13 +0100 | [diff] [blame] | 883 | * @p: hw params |
| 884 | */ |
| 885 | static inline unsigned int params_periods(const struct snd_pcm_hw_params *p) |
| 886 | { |
| 887 | return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_PERIODS)->min; |
| 888 | } |
| 889 | |
| 890 | /** |
Lars-Peter Clausen | 62f64a8 | 2014-12-29 19:41:40 +0100 | [diff] [blame] | 891 | * params_buffer_size - Get the buffer size (in frames) from the hw params |
Takashi Iwai | 85926e0 | 2014-10-30 15:06:13 +0100 | [diff] [blame] | 892 | * @p: hw params |
| 893 | */ |
| 894 | static inline unsigned int params_buffer_size(const struct snd_pcm_hw_params *p) |
| 895 | { |
| 896 | return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min; |
| 897 | } |
| 898 | |
| 899 | /** |
Lars-Peter Clausen | 62f64a8 | 2014-12-29 19:41:40 +0100 | [diff] [blame] | 900 | * params_buffer_bytes - Get the buffer size (in bytes) from the hw params |
Takashi Iwai | 85926e0 | 2014-10-30 15:06:13 +0100 | [diff] [blame] | 901 | * @p: hw params |
| 902 | */ |
| 903 | static inline unsigned int params_buffer_bytes(const struct snd_pcm_hw_params *p) |
| 904 | { |
| 905 | return hw_param_interval_c(p, SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min; |
| 906 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 907 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 908 | int snd_interval_refine(struct snd_interval *i, const struct snd_interval *v); |
| 909 | void snd_interval_mul(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); |
| 910 | void snd_interval_div(const struct snd_interval *a, const struct snd_interval *b, struct snd_interval *c); |
| 911 | void snd_interval_muldivk(const struct snd_interval *a, const struct snd_interval *b, |
| 912 | unsigned int k, struct snd_interval *c); |
| 913 | void snd_interval_mulkdiv(const struct snd_interval *a, unsigned int k, |
| 914 | const struct snd_interval *b, struct snd_interval *c); |
Mark Brown | 4af87a9 | 2012-03-14 19:48:43 +0000 | [diff] [blame] | 915 | int snd_interval_list(struct snd_interval *i, unsigned int count, |
| 916 | const unsigned int *list, unsigned int mask); |
Peter Rosin | f66f898 | 2015-01-28 15:16:06 +0100 | [diff] [blame] | 917 | int snd_interval_ranges(struct snd_interval *i, unsigned int count, |
| 918 | const struct snd_interval *list, unsigned int mask); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 919 | int snd_interval_ratnum(struct snd_interval *i, |
| 920 | unsigned int rats_count, struct snd_ratnum *rats, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 921 | unsigned int *nump, unsigned int *denp); |
| 922 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 923 | void _snd_pcm_hw_params_any(struct snd_pcm_hw_params *params); |
| 924 | void _snd_pcm_hw_param_setempty(struct snd_pcm_hw_params *params, snd_pcm_hw_param_t var); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 925 | 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] | 926 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 927 | 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] | 928 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 929 | int snd_pcm_hw_constraints_init(struct snd_pcm_substream *substream); |
| 930 | int snd_pcm_hw_constraints_complete(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 931 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 932 | 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] | 933 | u_int32_t mask); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 934 | 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] | 935 | u_int64_t mask); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 936 | 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] | 937 | unsigned int min, unsigned int max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 938 | int snd_pcm_hw_constraint_integer(struct snd_pcm_runtime *runtime, snd_pcm_hw_param_t var); |
| 939 | int snd_pcm_hw_constraint_list(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 940 | unsigned int cond, |
| 941 | snd_pcm_hw_param_t var, |
Mark Brown | 1464189 | 2012-07-05 12:15:01 +0100 | [diff] [blame] | 942 | const struct snd_pcm_hw_constraint_list *l); |
Peter Rosin | f66f898 | 2015-01-28 15:16:06 +0100 | [diff] [blame] | 943 | int snd_pcm_hw_constraint_ranges(struct snd_pcm_runtime *runtime, |
| 944 | unsigned int cond, |
| 945 | snd_pcm_hw_param_t var, |
| 946 | const struct snd_pcm_hw_constraint_ranges *r); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 947 | int snd_pcm_hw_constraint_ratnums(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 948 | unsigned int cond, |
| 949 | snd_pcm_hw_param_t var, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 950 | struct snd_pcm_hw_constraint_ratnums *r); |
| 951 | int snd_pcm_hw_constraint_ratdens(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 952 | unsigned int cond, |
| 953 | snd_pcm_hw_param_t var, |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 954 | struct snd_pcm_hw_constraint_ratdens *r); |
| 955 | int snd_pcm_hw_constraint_msbits(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 956 | unsigned int cond, |
| 957 | unsigned int width, |
| 958 | unsigned int msbits); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 959 | int snd_pcm_hw_constraint_step(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 960 | unsigned int cond, |
| 961 | snd_pcm_hw_param_t var, |
| 962 | unsigned long step); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 963 | int snd_pcm_hw_constraint_pow2(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 964 | unsigned int cond, |
| 965 | snd_pcm_hw_param_t var); |
Clemens Ladisch | d5b702a | 2011-09-16 23:03:02 +0200 | [diff] [blame] | 966 | int snd_pcm_hw_rule_noresample(struct snd_pcm_runtime *runtime, |
| 967 | unsigned int base_rate); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 968 | int snd_pcm_hw_rule_add(struct snd_pcm_runtime *runtime, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 969 | unsigned int cond, |
| 970 | int var, |
| 971 | snd_pcm_hw_rule_func_t func, void *private, |
| 972 | int dep, ...); |
| 973 | |
| 974 | int snd_pcm_format_signed(snd_pcm_format_t format); |
| 975 | int snd_pcm_format_unsigned(snd_pcm_format_t format); |
| 976 | int snd_pcm_format_linear(snd_pcm_format_t format); |
| 977 | int snd_pcm_format_little_endian(snd_pcm_format_t format); |
| 978 | int snd_pcm_format_big_endian(snd_pcm_format_t format); |
Takashi Iwai | 1b44c28 | 2005-09-09 15:05:33 +0200 | [diff] [blame] | 979 | #if 0 /* just for DocBook */ |
| 980 | /** |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 981 | * snd_pcm_format_cpu_endian - Check the PCM format is CPU-endian |
| 982 | * @format: the format to check |
| 983 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 984 | * Return: 1 if the given PCM format is CPU-endian, 0 if |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 985 | * opposite, or a negative error code if endian not specified. |
| 986 | */ |
Takashi Iwai | 8cdfd25 | 2005-09-07 14:08:11 +0200 | [diff] [blame] | 987 | int snd_pcm_format_cpu_endian(snd_pcm_format_t format); |
Takashi Iwai | 1b44c28 | 2005-09-09 15:05:33 +0200 | [diff] [blame] | 988 | #endif /* DocBook */ |
Takashi Iwai | 9502dca | 2005-05-18 16:25:46 +0200 | [diff] [blame] | 989 | #ifdef SNDRV_LITTLE_ENDIAN |
Martin Waitz | 9d01a82 | 2005-09-09 13:10:17 -0700 | [diff] [blame] | 990 | #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] | 991 | #else |
Martin Waitz | 9d01a82 | 2005-09-09 13:10:17 -0700 | [diff] [blame] | 992 | #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] | 993 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 994 | int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */ |
| 995 | 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] | 996 | 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] | 997 | const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format); |
| 998 | int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 999 | |
Lars-Peter Clausen | e6c2e7e | 2013-05-24 15:18:10 +0200 | [diff] [blame] | 1000 | void snd_pcm_set_ops(struct snd_pcm * pcm, int direction, |
| 1001 | const struct snd_pcm_ops *ops); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1002 | void snd_pcm_set_sync(struct snd_pcm_substream *substream); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1003 | int snd_pcm_lib_ioctl(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1004 | unsigned int cmd, void *arg); |
Jaroslav Kysela | 1250932 | 2010-01-07 15:36:31 +0100 | [diff] [blame] | 1005 | int snd_pcm_update_state(struct snd_pcm_substream *substream, |
| 1006 | struct snd_pcm_runtime *runtime); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1007 | int snd_pcm_update_hw_ptr(struct snd_pcm_substream *substream); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1008 | void snd_pcm_playback_silence(struct snd_pcm_substream *substream, snd_pcm_uframes_t new_hw_ptr); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1009 | void snd_pcm_period_elapsed(struct snd_pcm_substream *substream); |
| 1010 | 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] | 1011 | const void __user *buf, |
| 1012 | snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1013 | 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] | 1014 | void __user *buf, snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1015 | 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] | 1016 | void __user **bufs, snd_pcm_uframes_t frames); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1017 | 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] | 1018 | void __user **bufs, snd_pcm_uframes_t frames); |
| 1019 | |
Clemens Ladisch | 7653d55 | 2007-08-13 17:38:54 +0200 | [diff] [blame] | 1020 | extern const struct snd_pcm_hw_constraint_list snd_pcm_known_rates; |
| 1021 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1022 | int snd_pcm_limit_hw_rates(struct snd_pcm_runtime *runtime); |
Clemens Ladisch | 918f3a0 | 2007-08-13 17:40:54 +0200 | [diff] [blame] | 1023 | unsigned int snd_pcm_rate_to_rate_bit(unsigned int rate); |
Dimitris Papastamos | 4be77a5 | 2012-06-15 16:35:28 +0100 | [diff] [blame] | 1024 | unsigned int snd_pcm_rate_bit_to_rate(unsigned int rate_bit); |
Lars-Peter Clausen | e3a9269 | 2014-01-11 10:24:43 +0100 | [diff] [blame] | 1025 | unsigned int snd_pcm_rate_mask_intersect(unsigned int rates_a, |
| 1026 | unsigned int rates_b); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1028 | /** |
| 1029 | * snd_pcm_set_runtime_buffer - Set the PCM runtime buffer |
| 1030 | * @substream: PCM substream to set |
| 1031 | * @bufp: the buffer information, NULL to clear |
| 1032 | * |
| 1033 | * Copy the buffer information to runtime->dma_buffer when @bufp is non-NULL. |
| 1034 | * Otherwise it clears the current buffer information. |
| 1035 | */ |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1036 | 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] | 1037 | struct snd_dma_buffer *bufp) |
| 1038 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1039 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | if (bufp) { |
| 1041 | runtime->dma_buffer_p = bufp; |
| 1042 | runtime->dma_area = bufp->area; |
| 1043 | runtime->dma_addr = bufp->addr; |
| 1044 | runtime->dma_bytes = bufp->bytes; |
| 1045 | } else { |
| 1046 | runtime->dma_buffer_p = NULL; |
| 1047 | runtime->dma_area = NULL; |
| 1048 | runtime->dma_addr = 0; |
| 1049 | runtime->dma_bytes = 0; |
| 1050 | } |
| 1051 | } |
| 1052 | |
| 1053 | /* |
| 1054 | * Timer interface |
| 1055 | */ |
| 1056 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1057 | void snd_pcm_timer_resolution_change(struct snd_pcm_substream *substream); |
| 1058 | void snd_pcm_timer_init(struct snd_pcm_substream *substream); |
| 1059 | void snd_pcm_timer_done(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1060 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1061 | /** |
| 1062 | * snd_pcm_gettime - Fill the timespec depending on the timestamp mode |
| 1063 | * @runtime: PCM runtime instance |
| 1064 | * @tv: timespec to fill |
| 1065 | */ |
Jaroslav Kysela | b751eef | 2007-12-13 10:19:42 +0100 | [diff] [blame] | 1066 | static inline void snd_pcm_gettime(struct snd_pcm_runtime *runtime, |
| 1067 | struct timespec *tv) |
| 1068 | { |
Mark Brown | 0ac8a52 | 2014-07-08 16:51:49 +0200 | [diff] [blame] | 1069 | switch (runtime->tstamp_type) { |
| 1070 | case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC: |
Thomas Gleixner | 26204e0 | 2014-06-11 23:59:14 +0000 | [diff] [blame] | 1071 | ktime_get_ts(tv); |
Mark Brown | 0ac8a52 | 2014-07-08 16:51:49 +0200 | [diff] [blame] | 1072 | break; |
| 1073 | case SNDRV_PCM_TSTAMP_TYPE_MONOTONIC_RAW: |
| 1074 | getrawmonotonic(tv); |
| 1075 | break; |
| 1076 | default: |
Jaroslav Kysela | b751eef | 2007-12-13 10:19:42 +0100 | [diff] [blame] | 1077 | getnstimeofday(tv); |
Mark Brown | 0ac8a52 | 2014-07-08 16:51:49 +0200 | [diff] [blame] | 1078 | break; |
| 1079 | } |
Jaroslav Kysela | b751eef | 2007-12-13 10:19:42 +0100 | [diff] [blame] | 1080 | } |
| 1081 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1082 | /* |
| 1083 | * Memory |
| 1084 | */ |
| 1085 | |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1086 | int snd_pcm_lib_preallocate_free(struct snd_pcm_substream *substream); |
| 1087 | int snd_pcm_lib_preallocate_free_for_all(struct snd_pcm *pcm); |
| 1088 | int snd_pcm_lib_preallocate_pages(struct snd_pcm_substream *substream, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1089 | int type, struct device *data, |
| 1090 | size_t size, size_t max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1091 | int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1092 | int type, void *data, |
| 1093 | size_t size, size_t max); |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1094 | int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size); |
| 1095 | int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1096 | |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 1097 | int _snd_pcm_lib_alloc_vmalloc_buffer(struct snd_pcm_substream *substream, |
| 1098 | size_t size, gfp_t gfp_flags); |
| 1099 | int snd_pcm_lib_free_vmalloc_buffer(struct snd_pcm_substream *substream); |
| 1100 | struct page *snd_pcm_lib_get_vmalloc_page(struct snd_pcm_substream *substream, |
| 1101 | unsigned long offset); |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 1102 | /** |
| 1103 | * snd_pcm_lib_alloc_vmalloc_buffer - allocate virtual DMA buffer |
| 1104 | * @substream: the substream to allocate the buffer to |
| 1105 | * @size: the requested buffer size, in bytes |
| 1106 | * |
| 1107 | * Allocates the PCM substream buffer using vmalloc(), i.e., the memory is |
| 1108 | * contiguous in kernel virtual space, but not in physical memory. Use this |
| 1109 | * if the buffer is accessed by kernel code but not by device DMA. |
| 1110 | * |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 1111 | * Return: 1 if the buffer was changed, 0 if not changed, or a negative error |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 1112 | * code. |
| 1113 | */ |
Takashi Iwai | f213d8f | 2014-10-30 13:45:58 +0100 | [diff] [blame] | 1114 | static inline int snd_pcm_lib_alloc_vmalloc_buffer |
| 1115 | (struct snd_pcm_substream *substream, size_t size) |
| 1116 | { |
| 1117 | return _snd_pcm_lib_alloc_vmalloc_buffer(substream, size, |
| 1118 | GFP_KERNEL | __GFP_HIGHMEM | __GFP_ZERO); |
| 1119 | } |
| 1120 | |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 1121 | /** |
| 1122 | * snd_pcm_lib_alloc_vmalloc_32_buffer - allocate 32-bit-addressable buffer |
| 1123 | * @substream: the substream to allocate the buffer to |
| 1124 | * @size: the requested buffer size, in bytes |
| 1125 | * |
| 1126 | * This function works like snd_pcm_lib_alloc_vmalloc_buffer(), but uses |
| 1127 | * vmalloc_32(), i.e., the pages are allocated from 32-bit-addressable memory. |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 1128 | * |
| 1129 | * Return: 1 if the buffer was changed, 0 if not changed, or a negative error |
| 1130 | * code. |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 1131 | */ |
Takashi Iwai | f213d8f | 2014-10-30 13:45:58 +0100 | [diff] [blame] | 1132 | static inline int snd_pcm_lib_alloc_vmalloc_32_buffer |
| 1133 | (struct snd_pcm_substream *substream, size_t size) |
| 1134 | { |
| 1135 | return _snd_pcm_lib_alloc_vmalloc_buffer(substream, size, |
| 1136 | GFP_KERNEL | GFP_DMA32 | __GFP_ZERO); |
| 1137 | } |
Clemens Ladisch | 681b84e | 2009-12-18 09:29:00 +0100 | [diff] [blame] | 1138 | |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1139 | #define snd_pcm_get_dma_buf(substream) ((substream)->runtime->dma_buffer_p) |
| 1140 | |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1141 | #ifdef CONFIG_SND_DMA_SGBUF |
Takashi Iwai | 77a23f2 | 2008-08-21 13:00:13 +0200 | [diff] [blame] | 1142 | /* |
| 1143 | * SG-buffer handling |
| 1144 | */ |
| 1145 | #define snd_pcm_substream_sgbuf(substream) \ |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1146 | snd_pcm_get_dma_buf(substream)->private_data |
Takashi Iwai | 77a23f2 | 2008-08-21 13:00:13 +0200 | [diff] [blame] | 1147 | |
| 1148 | struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, |
| 1149 | unsigned long offset); |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1150 | #else /* !SND_DMA_SGBUF */ |
| 1151 | /* |
| 1152 | * fake using a continuous buffer |
| 1153 | */ |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1154 | #define snd_pcm_sgbuf_ops_page NULL |
| 1155 | #endif /* SND_DMA_SGBUF */ |
| 1156 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1157 | /** |
| 1158 | * snd_pcm_sgbuf_get_addr - Get the DMA address at the corresponding offset |
| 1159 | * @substream: PCM substream |
| 1160 | * @ofs: byte offset |
| 1161 | */ |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1162 | static inline dma_addr_t |
| 1163 | snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs) |
| 1164 | { |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1165 | return snd_sgbuf_get_addr(snd_pcm_get_dma_buf(substream), ofs); |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1166 | } |
| 1167 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1168 | /** |
| 1169 | * snd_pcm_sgbuf_get_ptr - Get the virtual address at the corresponding offset |
| 1170 | * @substream: PCM substream |
| 1171 | * @ofs: byte offset |
| 1172 | */ |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1173 | static inline void * |
| 1174 | snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs) |
| 1175 | { |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1176 | return snd_sgbuf_get_ptr(snd_pcm_get_dma_buf(substream), ofs); |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1177 | } |
| 1178 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1179 | /** |
| 1180 | * snd_pcm_sgbuf_chunk_size - Compute the max size that fits within the contig. |
| 1181 | * page from the given size |
| 1182 | * @substream: PCM substream |
| 1183 | * @ofs: byte offset |
| 1184 | * @size: byte size to examine |
| 1185 | */ |
Takashi Iwai | 9d069dc | 2012-09-20 20:29:12 -0700 | [diff] [blame] | 1186 | static inline unsigned int |
| 1187 | snd_pcm_sgbuf_get_chunk_size(struct snd_pcm_substream *substream, |
| 1188 | unsigned int ofs, unsigned int size) |
| 1189 | { |
| 1190 | return snd_sgbuf_get_chunk_size(snd_pcm_get_dma_buf(substream), ofs, size); |
| 1191 | } |
Takashi Iwai | cc6a8ac | 2008-06-17 16:39:06 +0200 | [diff] [blame] | 1192 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1193 | /** |
| 1194 | * snd_pcm_mmap_data_open - increase the mmap counter |
| 1195 | * @area: VMA |
| 1196 | * |
| 1197 | * PCM mmap callback should handle this counter properly |
| 1198 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1199 | static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area) |
| 1200 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1201 | struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1202 | atomic_inc(&substream->mmap_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | } |
| 1204 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1205 | /** |
| 1206 | * snd_pcm_mmap_data_close - decrease the mmap counter |
| 1207 | * @area: VMA |
| 1208 | * |
| 1209 | * PCM mmap callback should handle this counter properly |
| 1210 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1211 | static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area) |
| 1212 | { |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1213 | struct snd_pcm_substream *substream = (struct snd_pcm_substream *)area->vm_private_data; |
Takashi Iwai | 9c323fc | 2006-04-28 15:13:41 +0200 | [diff] [blame] | 1214 | atomic_dec(&substream->mmap_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1215 | } |
| 1216 | |
Takashi Iwai | 18a2b96 | 2011-09-28 17:12:59 +0200 | [diff] [blame] | 1217 | int snd_pcm_lib_default_mmap(struct snd_pcm_substream *substream, |
| 1218 | struct vm_area_struct *area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1219 | /* mmap for io-memory area */ |
| 1220 | #if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) |
| 1221 | #define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP |
Takashi Iwai | 877211f | 2005-11-17 13:59:38 +0100 | [diff] [blame] | 1222 | 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] | 1223 | #else |
| 1224 | #define SNDRV_PCM_INFO_MMAP_IOMEM 0 |
| 1225 | #define snd_pcm_lib_mmap_iomem NULL |
| 1226 | #endif |
| 1227 | |
Benjamin Herrenschmidt | 3674f19 | 2011-03-25 17:51:54 +1100 | [diff] [blame] | 1228 | #define snd_pcm_lib_mmap_vmalloc NULL |
Takashi Iwai | c32d977 | 2010-01-18 14:58:57 +0100 | [diff] [blame] | 1229 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1230 | /** |
| 1231 | * snd_pcm_limit_isa_dma_size - Get the max size fitting with ISA DMA transfer |
| 1232 | * @dma: DMA number |
| 1233 | * @max: pointer to store the max size |
| 1234 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1235 | static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) |
| 1236 | { |
| 1237 | *max = dma < 4 ? 64 * 1024 : 128 * 1024; |
| 1238 | } |
| 1239 | |
| 1240 | /* |
| 1241 | * Misc |
| 1242 | */ |
| 1243 | |
| 1244 | #define SNDRV_PCM_DEFAULT_CON_SPDIF (IEC958_AES0_CON_EMPHASIS_NONE|\ |
| 1245 | (IEC958_AES1_CON_ORIGINAL<<8)|\ |
| 1246 | (IEC958_AES1_CON_PCM_CODER<<8)|\ |
| 1247 | (IEC958_AES3_CON_FS_48000<<24)) |
| 1248 | |
Takashi Iwai | 7eaa943 | 2008-08-08 17:09:09 +0200 | [diff] [blame] | 1249 | #define PCM_RUNTIME_CHECK(sub) snd_BUG_ON(!(sub) || !(sub)->runtime) |
| 1250 | |
Takashi Iwai | 6e5265e | 2009-09-08 14:26:51 +0200 | [diff] [blame] | 1251 | const char *snd_pcm_format_name(snd_pcm_format_t format); |
| 1252 | |
Ola Lilja | 1aad779 | 2012-05-24 15:26:03 +0200 | [diff] [blame] | 1253 | /** |
Randy Dunlap | 8513915 | 2012-08-18 17:43:05 -0700 | [diff] [blame] | 1254 | * snd_pcm_stream_str - Get a string naming the direction of a stream |
| 1255 | * @substream: the pcm substream instance |
Yacine Belkadi | eb7c06e | 2013-03-11 22:05:14 +0100 | [diff] [blame] | 1256 | * |
| 1257 | * Return: A string naming the direction of the stream. |
Ola Lilja | 1aad779 | 2012-05-24 15:26:03 +0200 | [diff] [blame] | 1258 | */ |
| 1259 | static inline const char *snd_pcm_stream_str(struct snd_pcm_substream *substream) |
| 1260 | { |
| 1261 | if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) |
| 1262 | return "Playback"; |
| 1263 | else |
| 1264 | return "Capture"; |
| 1265 | } |
| 1266 | |
Takashi Iwai | 2d3391e | 2012-07-27 18:27:00 +0200 | [diff] [blame] | 1267 | /* |
| 1268 | * PCM channel-mapping control API |
| 1269 | */ |
| 1270 | /* array element of channel maps */ |
| 1271 | struct snd_pcm_chmap_elem { |
| 1272 | unsigned char channels; |
| 1273 | unsigned char map[15]; |
| 1274 | }; |
| 1275 | |
| 1276 | /* channel map information; retrieved via snd_kcontrol_chip() */ |
| 1277 | struct snd_pcm_chmap { |
| 1278 | struct snd_pcm *pcm; /* assigned PCM instance */ |
| 1279 | int stream; /* PLAYBACK or CAPTURE */ |
| 1280 | struct snd_kcontrol *kctl; |
| 1281 | const struct snd_pcm_chmap_elem *chmap; |
| 1282 | unsigned int max_channels; |
| 1283 | unsigned int channel_mask; /* optional: active channels bitmask */ |
| 1284 | void *private_data; /* optional: private data pointer */ |
| 1285 | }; |
| 1286 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1287 | /** |
| 1288 | * snd_pcm_chmap_substream - get the PCM substream assigned to the given chmap info |
| 1289 | * @info: chmap information |
| 1290 | * @idx: the substream number index |
| 1291 | */ |
Takashi Iwai | 2d3391e | 2012-07-27 18:27:00 +0200 | [diff] [blame] | 1292 | static inline struct snd_pcm_substream * |
| 1293 | snd_pcm_chmap_substream(struct snd_pcm_chmap *info, unsigned int idx) |
| 1294 | { |
| 1295 | struct snd_pcm_substream *s; |
| 1296 | for (s = info->pcm->streams[info->stream].substream; s; s = s->next) |
| 1297 | if (s->number == idx) |
| 1298 | return s; |
| 1299 | return NULL; |
| 1300 | } |
| 1301 | |
| 1302 | /* ALSA-standard channel maps (RL/RR prior to C/LFE) */ |
| 1303 | extern const struct snd_pcm_chmap_elem snd_pcm_std_chmaps[]; |
| 1304 | /* Other world's standard channel maps (C/LFE prior to RL/RR) */ |
| 1305 | extern const struct snd_pcm_chmap_elem snd_pcm_alt_chmaps[]; |
| 1306 | |
| 1307 | /* bit masks to be passed to snd_pcm_chmap.channel_mask field */ |
| 1308 | #define SND_PCM_CHMAP_MASK_24 ((1U << 2) | (1U << 4)) |
| 1309 | #define SND_PCM_CHMAP_MASK_246 (SND_PCM_CHMAP_MASK_24 | (1U << 6)) |
| 1310 | #define SND_PCM_CHMAP_MASK_2468 (SND_PCM_CHMAP_MASK_246 | (1U << 8)) |
| 1311 | |
| 1312 | int snd_pcm_add_chmap_ctls(struct snd_pcm *pcm, int stream, |
| 1313 | const struct snd_pcm_chmap_elem *chmap, |
| 1314 | int max_channels, |
| 1315 | unsigned long private_value, |
| 1316 | struct snd_pcm_chmap **info_ret); |
| 1317 | |
Takashi Iwai | 30b771c | 2014-10-30 15:02:50 +0100 | [diff] [blame] | 1318 | /** |
| 1319 | * pcm_format_to_bits - Strong-typed conversion of pcm_format to bitwise |
| 1320 | * @pcm_format: PCM format |
| 1321 | */ |
Eldad Zack | 74c34ca | 2013-04-23 01:00:41 +0200 | [diff] [blame] | 1322 | static inline u64 pcm_format_to_bits(snd_pcm_format_t pcm_format) |
| 1323 | { |
| 1324 | return 1ULL << (__force int) pcm_format; |
| 1325 | } |
| 1326 | |
Takashi Iwai | 09e56df | 2014-02-04 18:19:48 +0100 | [diff] [blame] | 1327 | /* printk helpers */ |
| 1328 | #define pcm_err(pcm, fmt, args...) \ |
| 1329 | dev_err((pcm)->card->dev, fmt, ##args) |
| 1330 | #define pcm_warn(pcm, fmt, args...) \ |
| 1331 | dev_warn((pcm)->card->dev, fmt, ##args) |
| 1332 | #define pcm_dbg(pcm, fmt, args...) \ |
| 1333 | dev_dbg((pcm)->card->dev, fmt, ##args) |
| 1334 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1335 | #endif /* __SOUND_PCM_H */ |