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Diffstat (limited to 'include/sound/pcm.h')
| -rw-r--r-- | include/sound/pcm.h | 1040 |
1 files changed, 1040 insertions, 0 deletions
diff --git a/include/sound/pcm.h b/include/sound/pcm.h new file mode 100644 index 000000000000..53fc04d75bad --- /dev/null +++ b/include/sound/pcm.h @@ -0,0 +1,1040 @@ +#ifndef __SOUND_PCM_H +#define __SOUND_PCM_H + +/* + * Digital Audio (PCM) abstract layer + * Copyright (c) by Jaroslav Kysela <perex@suse.cz> + * Abramo Bagnara <abramo@alsa-project.org> + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <sound/asound.h> +#include <sound/memalloc.h> +#include <linux/poll.h> +#include <linux/bitops.h> + +typedef sndrv_pcm_uframes_t snd_pcm_uframes_t; +typedef sndrv_pcm_sframes_t snd_pcm_sframes_t; +typedef enum sndrv_pcm_class snd_pcm_class_t; +typedef enum sndrv_pcm_subclass snd_pcm_subclass_t; +typedef enum sndrv_pcm_stream snd_pcm_stream_t; +typedef enum sndrv_pcm_access snd_pcm_access_t; +typedef enum sndrv_pcm_format snd_pcm_format_t; +typedef enum sndrv_pcm_subformat snd_pcm_subformat_t; +typedef enum sndrv_pcm_state snd_pcm_state_t; +typedef union sndrv_pcm_sync_id snd_pcm_sync_id_t; +typedef struct sndrv_pcm_info snd_pcm_info_t; +typedef enum sndrv_pcm_hw_param snd_pcm_hw_param_t; +typedef struct sndrv_pcm_hw_params snd_pcm_hw_params_t; +typedef enum sndrv_pcm_start snd_pcm_start_t; +typedef enum sndrv_pcm_xrun snd_pcm_xrun_t; +typedef enum sndrv_pcm_tstamp snd_pcm_tstamp_t; +typedef struct sndrv_pcm_sw_params snd_pcm_sw_params_t; +typedef struct sndrv_pcm_channel_info snd_pcm_channel_info_t; +typedef struct sndrv_pcm_status snd_pcm_status_t; +typedef struct sndrv_pcm_mmap_status snd_pcm_mmap_status_t; +typedef struct sndrv_pcm_mmap_control snd_pcm_mmap_control_t; +typedef struct sndrv_mask snd_mask_t; +typedef struct snd_sg_buf snd_pcm_sgbuf_t; + +#define snd_pcm_substream_chip(substream) ((substream)->private_data) +#define snd_pcm_chip(pcm) ((pcm)->private_data) + +typedef struct _snd_pcm_file snd_pcm_file_t; +typedef struct _snd_pcm_runtime snd_pcm_runtime_t; + +#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) +#include "pcm_oss.h" +#endif + +/* + * Hardware (lowlevel) section + */ + +typedef struct _snd_pcm_hardware { + unsigned int info; /* SNDRV_PCM_INFO_* */ + u64 formats; /* SNDRV_PCM_FMTBIT_* */ + unsigned int rates; /* SNDRV_PCM_RATE_* */ + unsigned int rate_min; /* min rate */ + unsigned int rate_max; /* max rate */ + unsigned int channels_min; /* min channels */ + unsigned int channels_max; /* max channels */ + size_t buffer_bytes_max; /* max buffer size */ + size_t period_bytes_min; /* min period size */ + size_t period_bytes_max; /* max period size */ + unsigned int periods_min; /* min # of periods */ + unsigned int periods_max; /* max # of periods */ + size_t fifo_size; /* fifo size in bytes */ +} snd_pcm_hardware_t; + +typedef struct _snd_pcm_ops { + int (*open)(snd_pcm_substream_t *substream); + int (*close)(snd_pcm_substream_t *substream); + int (*ioctl)(snd_pcm_substream_t * substream, + unsigned int cmd, void *arg); + int (*hw_params)(snd_pcm_substream_t * substream, snd_pcm_hw_params_t * params); + int (*hw_free)(snd_pcm_substream_t *substream); + int (*prepare)(snd_pcm_substream_t * substream); + int (*trigger)(snd_pcm_substream_t * substream, int cmd); + snd_pcm_uframes_t (*pointer)(snd_pcm_substream_t * substream); + int (*copy)(snd_pcm_substream_t *substream, int channel, snd_pcm_uframes_t pos, + void __user *buf, snd_pcm_uframes_t count); + int (*silence)(snd_pcm_substream_t *substream, int channel, + snd_pcm_uframes_t pos, snd_pcm_uframes_t count); + struct page *(*page)(snd_pcm_substream_t *substream, unsigned long offset); + int (*mmap)(snd_pcm_substream_t *substream, struct vm_area_struct *vma); + int (*ack)(snd_pcm_substream_t *substream); +} snd_pcm_ops_t; + +/* + * + */ + +#define SNDRV_PCM_DEVICES 8 + +#define SNDRV_PCM_IOCTL1_FALSE ((void *)0) +#define SNDRV_PCM_IOCTL1_TRUE ((void *)1) + +#define SNDRV_PCM_IOCTL1_RESET 0 +#define SNDRV_PCM_IOCTL1_INFO 1 +#define SNDRV_PCM_IOCTL1_CHANNEL_INFO 2 +#define SNDRV_PCM_IOCTL1_GSTATE 3 + +#define SNDRV_PCM_TRIGGER_STOP 0 +#define SNDRV_PCM_TRIGGER_START 1 +#define SNDRV_PCM_TRIGGER_PAUSE_PUSH 3 +#define SNDRV_PCM_TRIGGER_PAUSE_RELEASE 4 +#define SNDRV_PCM_TRIGGER_SUSPEND 5 +#define SNDRV_PCM_TRIGGER_RESUME 6 + +#define SNDRV_PCM_POS_XRUN ((snd_pcm_uframes_t)-1) + +/* If you change this don't forget to change rates[] table in pcm_native.c */ +#define SNDRV_PCM_RATE_5512 (1<<0) /* 5512Hz */ +#define SNDRV_PCM_RATE_8000 (1<<1) /* 8000Hz */ +#define SNDRV_PCM_RATE_11025 (1<<2) /* 11025Hz */ +#define SNDRV_PCM_RATE_16000 (1<<3) /* 16000Hz */ +#define SNDRV_PCM_RATE_22050 (1<<4) /* 22050Hz */ +#define SNDRV_PCM_RATE_32000 (1<<5) /* 32000Hz */ +#define SNDRV_PCM_RATE_44100 (1<<6) /* 44100Hz */ +#define SNDRV_PCM_RATE_48000 (1<<7) /* 48000Hz */ +#define SNDRV_PCM_RATE_64000 (1<<8) /* 64000Hz */ +#define SNDRV_PCM_RATE_88200 (1<<9) /* 88200Hz */ +#define SNDRV_PCM_RATE_96000 (1<<10) /* 96000Hz */ +#define SNDRV_PCM_RATE_176400 (1<<11) /* 176400Hz */ +#define SNDRV_PCM_RATE_192000 (1<<12) /* 192000Hz */ + +#define SNDRV_PCM_RATE_CONTINUOUS (1<<30) /* continuous range */ +#define SNDRV_PCM_RATE_KNOT (1<<31) /* supports more non-continuos rates */ + +#define SNDRV_PCM_RATE_8000_44100 (SNDRV_PCM_RATE_8000|SNDRV_PCM_RATE_11025|\ + SNDRV_PCM_RATE_16000|SNDRV_PCM_RATE_22050|\ + SNDRV_PCM_RATE_32000|SNDRV_PCM_RATE_44100) +#define SNDRV_PCM_RATE_8000_48000 (SNDRV_PCM_RATE_8000_44100|SNDRV_PCM_RATE_48000) +#define SNDRV_PCM_RATE_8000_96000 (SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_64000|\ + SNDRV_PCM_RATE_88200|SNDRV_PCM_RATE_96000) +#define SNDRV_PCM_RATE_8000_192000 (SNDRV_PCM_RATE_8000_96000|SNDRV_PCM_RATE_176400|\ + SNDRV_PCM_RATE_192000) +#define SNDRV_PCM_FMTBIT_S8 (1ULL << SNDRV_PCM_FORMAT_S8) +#define SNDRV_PCM_FMTBIT_U8 (1ULL << SNDRV_PCM_FORMAT_U8) +#define SNDRV_PCM_FMTBIT_S16_LE (1ULL << SNDRV_PCM_FORMAT_S16_LE) +#define SNDRV_PCM_FMTBIT_S16_BE (1ULL << SNDRV_PCM_FORMAT_S16_BE) +#define SNDRV_PCM_FMTBIT_U16_LE (1ULL << SNDRV_PCM_FORMAT_U16_LE) +#define SNDRV_PCM_FMTBIT_U16_BE (1ULL << SNDRV_PCM_FORMAT_U16_BE) +#define SNDRV_PCM_FMTBIT_S24_LE (1ULL << SNDRV_PCM_FORMAT_S24_LE) +#define SNDRV_PCM_FMTBIT_S24_BE (1ULL << SNDRV_PCM_FORMAT_S24_BE) +#define SNDRV_PCM_FMTBIT_U24_LE (1ULL << SNDRV_PCM_FORMAT_U24_LE) +#define SNDRV_PCM_FMTBIT_U24_BE (1ULL << SNDRV_PCM_FORMAT_U24_BE) +#define SNDRV_PCM_FMTBIT_S32_LE (1ULL << SNDRV_PCM_FORMAT_S32_LE) +#define SNDRV_PCM_FMTBIT_S32_BE (1ULL << SNDRV_PCM_FORMAT_S32_BE) +#define SNDRV_PCM_FMTBIT_U32_LE (1ULL << SNDRV_PCM_FORMAT_U32_LE) +#define SNDRV_PCM_FMTBIT_U32_BE (1ULL << SNDRV_PCM_FORMAT_U32_BE) +#define SNDRV_PCM_FMTBIT_FLOAT_LE (1ULL << SNDRV_PCM_FORMAT_FLOAT_LE) +#define SNDRV_PCM_FMTBIT_FLOAT_BE (1ULL << SNDRV_PCM_FORMAT_FLOAT_BE) +#define SNDRV_PCM_FMTBIT_FLOAT64_LE (1ULL << SNDRV_PCM_FORMAT_FLOAT64_LE) +#define SNDRV_PCM_FMTBIT_FLOAT64_BE (1ULL << SNDRV_PCM_FORMAT_FLOAT64_BE) +#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE (1ULL << SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE) +#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE (1ULL << SNDRV_PCM_FORMAT_IEC958_SUBFRAME_BE) +#define SNDRV_PCM_FMTBIT_MU_LAW (1ULL << SNDRV_PCM_FORMAT_MU_LAW) +#define SNDRV_PCM_FMTBIT_A_LAW (1ULL << SNDRV_PCM_FORMAT_A_LAW) +#define SNDRV_PCM_FMTBIT_IMA_ADPCM (1ULL << SNDRV_PCM_FORMAT_IMA_ADPCM) +#define SNDRV_PCM_FMTBIT_MPEG (1ULL << SNDRV_PCM_FORMAT_MPEG) +#define SNDRV_PCM_FMTBIT_GSM (1ULL << SNDRV_PCM_FORMAT_GSM) +#define SNDRV_PCM_FMTBIT_SPECIAL (1ULL << SNDRV_PCM_FORMAT_SPECIAL) +#define SNDRV_PCM_FMTBIT_S24_3LE (1ULL << SNDRV_PCM_FORMAT_S24_3LE) +#define SNDRV_PCM_FMTBIT_U24_3LE (1ULL << SNDRV_PCM_FORMAT_U24_3LE) +#define SNDRV_PCM_FMTBIT_S24_3BE (1ULL << SNDRV_PCM_FORMAT_S24_3BE) +#define SNDRV_PCM_FMTBIT_U24_3BE (1ULL << SNDRV_PCM_FORMAT_U24_3BE) +#define SNDRV_PCM_FMTBIT_S20_3LE (1ULL << SNDRV_PCM_FORMAT_S20_3LE) +#define SNDRV_PCM_FMTBIT_U20_3LE (1ULL << SNDRV_PCM_FORMAT_U20_3LE) +#define SNDRV_PCM_FMTBIT_S20_3BE (1ULL << SNDRV_PCM_FORMAT_S20_3BE) +#define SNDRV_PCM_FMTBIT_U20_3BE (1ULL << SNDRV_PCM_FORMAT_U20_3BE) +#define SNDRV_PCM_FMTBIT_S18_3LE (1ULL << SNDRV_PCM_FORMAT_S18_3LE) +#define SNDRV_PCM_FMTBIT_U18_3LE (1ULL << SNDRV_PCM_FORMAT_U18_3LE) +#define SNDRV_PCM_FMTBIT_S18_3BE (1ULL << SNDRV_PCM_FORMAT_S18_3BE) +#define SNDRV_PCM_FMTBIT_U18_3BE (1ULL << SNDRV_PCM_FORMAT_U18_3BE) + +#ifdef SNDRV_LITTLE_ENDIAN +#define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_LE +#define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_LE +#define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_LE +#define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_LE +#define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_LE +#define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_LE +#define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_LE +#define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_LE +#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE +#endif +#ifdef SNDRV_BIG_ENDIAN +#define SNDRV_PCM_FMTBIT_S16 SNDRV_PCM_FMTBIT_S16_BE +#define SNDRV_PCM_FMTBIT_U16 SNDRV_PCM_FMTBIT_U16_BE +#define SNDRV_PCM_FMTBIT_S24 SNDRV_PCM_FMTBIT_S24_BE +#define SNDRV_PCM_FMTBIT_U24 SNDRV_PCM_FMTBIT_U24_BE +#define SNDRV_PCM_FMTBIT_S32 SNDRV_PCM_FMTBIT_S32_BE +#define SNDRV_PCM_FMTBIT_U32 SNDRV_PCM_FMTBIT_U32_BE +#define SNDRV_PCM_FMTBIT_FLOAT SNDRV_PCM_FMTBIT_FLOAT_BE +#define SNDRV_PCM_FMTBIT_FLOAT64 SNDRV_PCM_FMTBIT_FLOAT64_BE +#define SNDRV_PCM_FMTBIT_IEC958_SUBFRAME SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_BE +#endif + +struct _snd_pcm_file { + snd_pcm_substream_t * substream; + struct _snd_pcm_file * next; +}; + +typedef struct _snd_pcm_hw_rule snd_pcm_hw_rule_t; + +typedef int (*snd_pcm_hw_rule_func_t)(snd_pcm_hw_params_t *params, + snd_pcm_hw_rule_t *rule); + +struct _snd_pcm_hw_rule { + unsigned int cond; + snd_pcm_hw_rule_func_t func; + int var; + int deps[4]; + void *private; +}; + +typedef struct _snd_pcm_hw_constraints { + snd_mask_t masks[SNDRV_PCM_HW_PARAM_LAST_MASK - + SNDRV_PCM_HW_PARAM_FIRST_MASK + 1]; + snd_interval_t intervals[SNDRV_PCM_HW_PARAM_LAST_INTERVAL - + SNDRV_PCM_HW_PARAM_FIRST_INTERVAL + 1]; + unsigned int rules_num; + unsigned int rules_all; + snd_pcm_hw_rule_t *rules; +} snd_pcm_hw_constraints_t; + +static inline snd_mask_t *constrs_mask(snd_pcm_hw_constraints_t *constrs, + snd_pcm_hw_param_t var) +{ + return &constrs->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; +} + +static inline snd_interval_t *constrs_interval(snd_pcm_hw_constraints_t *constrs, + snd_pcm_hw_param_t var) +{ + return &constrs->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; +} + +typedef struct { + unsigned int num; + unsigned int den_min, den_max, den_step; +} ratnum_t; + +typedef struct { + unsigned int num_min, num_max, num_step; + unsigned int den; +} ratden_t; + +typedef struct { + int nrats; + ratnum_t *rats; +} snd_pcm_hw_constraint_ratnums_t; + +typedef struct { + int nrats; + ratden_t *rats; +} snd_pcm_hw_constraint_ratdens_t; + +typedef struct { + unsigned int count; + unsigned int *list; + unsigned int mask; +} snd_pcm_hw_constraint_list_t; + +struct _snd_pcm_runtime { + /* -- Status -- */ + snd_pcm_substream_t *trigger_master; + snd_timestamp_t trigger_tstamp; /* trigger timestamp */ + int overrange; + snd_pcm_uframes_t avail_max; + snd_pcm_uframes_t hw_ptr_base; /* Position at buffer restart */ + snd_pcm_uframes_t hw_ptr_interrupt; /* Position at interrupt time*/ + + /* -- HW params -- */ + snd_pcm_access_t access; /* access mode */ + snd_pcm_format_t format; /* SNDRV_PCM_FORMAT_* */ + snd_pcm_subformat_t subformat; /* subformat */ + unsigned int rate; /* rate in Hz */ + unsigned int channels; /* channels */ + snd_pcm_uframes_t period_size; /* period size */ + unsigned int periods; /* periods */ + snd_pcm_uframes_t buffer_size; /* buffer size */ + unsigned int tick_time; /* tick time */ + snd_pcm_uframes_t min_align; /* Min alignment for the format */ + size_t byte_align; + unsigned int frame_bits; + unsigned int sample_bits; + unsigned int info; + unsigned int rate_num; + unsigned int rate_den; + + /* -- SW params -- */ + int tstamp_timespec; /* use timeval (0) or timespec (1) */ + snd_pcm_tstamp_t tstamp_mode; /* mmap timestamp is updated */ + unsigned int period_step; + unsigned int sleep_min; /* min ticks to sleep */ + snd_pcm_uframes_t xfer_align; /* xfer size need to be a multiple */ + snd_pcm_uframes_t start_threshold; + snd_pcm_uframes_t stop_threshold; + snd_pcm_uframes_t silence_threshold; /* Silence filling happens when + noise is nearest than this */ + snd_pcm_uframes_t silence_size; /* Silence filling size */ + snd_pcm_uframes_t boundary; /* pointers wrap point */ + + snd_pcm_uframes_t silence_start; /* starting pointer to silence area */ + snd_pcm_uframes_t silence_filled; /* size filled with silence */ + + snd_pcm_sync_id_t sync; /* hardware synchronization ID */ + + /* -- mmap -- */ + volatile snd_pcm_mmap_status_t *status; + volatile snd_pcm_mmap_control_t *control; + atomic_t mmap_count; + + /* -- locking / scheduling -- */ + wait_queue_head_t sleep; + struct timer_list tick_timer; + struct fasync_struct *fasync; + + /* -- private section -- */ + void *private_data; + void (*private_free)(snd_pcm_runtime_t *runtime); + + /* -- hardware description -- */ + snd_pcm_hardware_t hw; + snd_pcm_hw_constraints_t hw_constraints; + + /* -- interrupt callbacks -- */ + void (*transfer_ack_begin)(snd_pcm_substream_t *substream); + void (*transfer_ack_end)(snd_pcm_substream_t *substream); + + /* -- timer -- */ + unsigned int timer_resolution; /* timer resolution */ + + /* -- DMA -- */ + unsigned char *dma_area; /* DMA area */ + dma_addr_t dma_addr; /* physical bus address (not accessible from main CPU) */ + size_t dma_bytes; /* size of DMA area */ + + struct snd_dma_buffer *dma_buffer_p; /* allocated buffer */ + +#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) + /* -- OSS things -- */ + snd_pcm_oss_runtime_t oss; +#endif +}; + +typedef struct _snd_pcm_group { /* keep linked substreams */ + spinlock_t lock; + struct list_head substreams; + int count; +} snd_pcm_group_t; + +struct _snd_pcm_substream { + snd_pcm_t *pcm; + snd_pcm_str_t *pstr; + void *private_data; /* copied from pcm->private_data */ + int number; + char name[32]; /* substream name */ + int stream; /* stream (direction) */ + size_t buffer_bytes_max; /* limit ring buffer size */ + struct snd_dma_buffer dma_buffer; + unsigned int dma_buf_id; + size_t dma_max; + /* -- hardware operations -- */ + unsigned int open_flag: 1; /* lowlevel device has been opened */ + snd_pcm_ops_t *ops; + /* -- runtime information -- */ + snd_pcm_runtime_t *runtime; + /* -- timer section -- */ + snd_timer_t *timer; /* timer */ + unsigned timer_running: 1; /* time is running */ + spinlock_t timer_lock; + /* -- next substream -- */ + snd_pcm_substream_t *next; + /* -- linked substreams -- */ + struct list_head link_list; /* linked list member */ + snd_pcm_group_t self_group; /* fake group for non linked substream (with substream lock inside) */ + snd_pcm_group_t *group; /* pointer to current group */ + /* -- assigned files -- */ + snd_pcm_file_t *file; + struct file *ffile; +#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) + /* -- OSS things -- */ + snd_pcm_oss_substream_t oss; +#endif + snd_info_entry_t *proc_root; + snd_info_entry_t *proc_info_entry; + snd_info_entry_t *proc_hw_params_entry; + snd_info_entry_t *proc_sw_params_entry; + snd_info_entry_t *proc_status_entry; + snd_info_entry_t *proc_prealloc_entry; + /* misc flags */ + unsigned int no_mmap_ctrl: 1; +}; + +#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) +#define SUBSTREAM_BUSY(substream) ((substream)->file != NULL || ((substream)->oss.file != NULL)) +#else +#define SUBSTREAM_BUSY(substream) ((substream)->file != NULL) +#endif + + +struct _snd_pcm_str { + int stream; /* stream (direction) */ + snd_pcm_t *pcm; + /* -- substreams -- */ + unsigned int substream_count; + unsigned int substream_opened; + snd_pcm_substream_t *substream; +#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) + /* -- OSS things -- */ + snd_pcm_oss_stream_t oss; +#endif + snd_pcm_file_t *files; + snd_minor_t *reg; + snd_info_entry_t *proc_root; + snd_info_entry_t *proc_info_entry; +#ifdef CONFIG_SND_DEBUG + unsigned int xrun_debug; /* 0 = disabled, 1 = verbose, 2 = stacktrace */ + snd_info_entry_t *proc_xrun_debug_entry; +#endif +}; + +struct _snd_pcm { + snd_card_t *card; + unsigned int device; /* device number */ + unsigned int info_flags; + unsigned short dev_class; + unsigned short dev_subclass; + char id[64]; + char name[80]; + snd_pcm_str_t streams[2]; + struct semaphore open_mutex; + wait_queue_head_t open_wait; + void *private_data; + void (*private_free) (snd_pcm_t *pcm); +#if defined(CONFIG_SND_PCM_OSS) || defined(CONFIG_SND_PCM_OSS_MODULE) + snd_pcm_oss_t oss; +#endif +}; + +typedef struct _snd_pcm_notify { + int (*n_register) (snd_pcm_t * pcm); + int (*n_disconnect) (snd_pcm_t * pcm); + int (*n_unregister) (snd_pcm_t * pcm); + struct list_head list; +} snd_pcm_notify_t; + +/* + * Registering + */ + +extern snd_pcm_t *snd_pcm_devices[]; +extern snd_minor_t snd_pcm_reg[2]; + +int snd_pcm_new(snd_card_t * card, char *id, int device, + int playback_count, int capture_count, + snd_pcm_t **rpcm); +int snd_pcm_new_stream(snd_pcm_t *pcm, int stream, int substream_count); + +int snd_pcm_notify(snd_pcm_notify_t *notify, int nfree); + +/* + * Native I/O + */ + +extern rwlock_t snd_pcm_link_rwlock; + +int snd_pcm_info(snd_pcm_substream_t * substream, snd_pcm_info_t *info); +int snd_pcm_info_user(snd_pcm_substream_t * substream, snd_pcm_info_t __user *info); +int snd_pcm_status(snd_pcm_substream_t * substream, snd_pcm_status_t *status); +int snd_pcm_prepare(snd_pcm_substream_t *substream); +int snd_pcm_start(snd_pcm_substream_t *substream); +int snd_pcm_stop(snd_pcm_substream_t *substream, int status); +int snd_pcm_drain_done(snd_pcm_substream_t *substream); +#ifdef CONFIG_PM +int snd_pcm_suspend(snd_pcm_substream_t *substream); +int snd_pcm_suspend_all(snd_pcm_t *pcm); +#endif +int snd_pcm_kernel_playback_ioctl(snd_pcm_substream_t *substream, unsigned int cmd, void *arg); +int snd_pcm_kernel_capture_ioctl(snd_pcm_substream_t *substream, unsigned int cmd, void *arg); +int snd_pcm_kernel_ioctl(snd_pcm_substream_t *substream, unsigned int cmd, void *arg); +int snd_pcm_open_substream(snd_pcm_t *pcm, int stream, snd_pcm_substream_t **rsubstream); +void snd_pcm_release_substream(snd_pcm_substream_t *substream); +void snd_pcm_vma_notify_data(void *client, void *data); +int snd_pcm_mmap_data(snd_pcm_substream_t *substream, struct file *file, struct vm_area_struct *area); + +#if BITS_PER_LONG >= 64 + +static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) +{ + *rem = *n % div; + *n /= div; +} + +#elif defined(i386) + +static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) +{ + u_int32_t low, high; + low = *n & 0xffffffff; + high = *n >> 32; + if (high) { + u_int32_t high1 = high % div; + high /= div; + asm("divl %2":"=a" (low), "=d" (*rem):"rm" (div), "a" (low), "d" (high1)); + *n = (u_int64_t)high << 32 | low; + } else { + *n = low / div; + *rem = low % div; + } +} +#else + +static inline void divl(u_int32_t high, u_int32_t low, + u_int32_t div, + u_int32_t *q, u_int32_t *r) +{ + u_int64_t n = (u_int64_t)high << 32 | low; + u_int64_t d = (u_int64_t)div << 31; + u_int32_t q1 = 0; + int c = 32; + while (n > 0xffffffffU) { + q1 <<= 1; + if (n >= d) { + n -= d; + q1 |= 1; + } + d >>= 1; + c--; + } + q1 <<= c; + if (n) { + low = n; + *q = q1 | (low / div); + *r = low % div; + } else { + *r = 0; + *q = q1; + } + return; +} + +static inline void div64_32(u_int64_t *n, u_int32_t div, u_int32_t *rem) +{ + u_int32_t low, high; + low = *n & 0xffffffff; + high = *n >> 32; + if (high) { + u_int32_t high1 = high % div; + u_int32_t low1 = low; + high /= div; + divl(high1, low1, div, &low, rem); + *n = (u_int64_t)high << 32 | low; + } else { + *n = low / div; + *rem = low % div; + } +} +#endif + +/* + * PCM library + */ + +static inline int snd_pcm_stream_linked(snd_pcm_substream_t *substream) +{ + return substream->group != &substream->self_group; +} + +static inline void snd_pcm_stream_lock(snd_pcm_substream_t *substream) +{ + read_lock(&snd_pcm_link_rwlock); + spin_lock(&substream->self_group.lock); +} + +static inline void snd_pcm_stream_unlock(snd_pcm_substream_t *substream) +{ + spin_unlock(&substream->self_group.lock); + read_unlock(&snd_pcm_link_rwlock); +} + +static inline void snd_pcm_stream_lock_irq(snd_pcm_substream_t *substream) +{ + read_lock_irq(&snd_pcm_link_rwlock); + spin_lock(&substream->self_group.lock); +} + +static inline void snd_pcm_stream_unlock_irq(snd_pcm_substream_t *substream) +{ + spin_unlock(&substream->self_group.lock); + read_unlock_irq(&snd_pcm_link_rwlock); +} + +#define snd_pcm_stream_lock_irqsave(substream, flags) \ +do { \ + read_lock_irqsave(&snd_pcm_link_rwlock, (flags)); \ + spin_lock(&substream->self_group.lock); \ +} while (0) + +#define snd_pcm_stream_unlock_irqrestore(substream, flags) \ +do { \ + spin_unlock(&substream->self_group.lock); \ + read_unlock_irqrestore(&snd_pcm_link_rwlock, (flags)); \ +} while (0) + +#define snd_pcm_group_for_each(pos, substream) \ + list_for_each(pos, &substream->group->substreams) + +#define snd_pcm_group_substream_entry(pos) \ + list_entry(pos, snd_pcm_substream_t, link_list) + +static inline int snd_pcm_running(snd_pcm_substream_t *substream) +{ + return (substream->runtime->status->state == SNDRV_PCM_STATE_RUNNING || + (substream->runtime->status->state == SNDRV_PCM_STATE_DRAINING && + substream->stream == SNDRV_PCM_STREAM_PLAYBACK)); +} + +static inline ssize_t bytes_to_samples(snd_pcm_runtime_t *runtime, ssize_t size) +{ + return size * 8 / runtime->sample_bits; +} + +static inline snd_pcm_sframes_t bytes_to_frames(snd_pcm_runtime_t *runtime, ssize_t size) +{ + return size * 8 / runtime->frame_bits; +} + +static inline ssize_t samples_to_bytes(snd_pcm_runtime_t *runtime, ssize_t size) +{ + return size * runtime->sample_bits / 8; +} + +static inline ssize_t frames_to_bytes(snd_pcm_runtime_t *runtime, snd_pcm_sframes_t size) +{ + return size * runtime->frame_bits / 8; +} + +static inline int frame_aligned(snd_pcm_runtime_t *runtime, ssize_t bytes) +{ + return bytes % runtime->byte_align == 0; +} + +static inline size_t snd_pcm_lib_buffer_bytes(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + return frames_to_bytes(runtime, runtime->buffer_size); +} + +static inline size_t snd_pcm_lib_period_bytes(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + return frames_to_bytes(runtime, runtime->period_size); +} + +/* + * result is: 0 ... (boundary - 1) + */ +static inline snd_pcm_uframes_t snd_pcm_playback_avail(snd_pcm_runtime_t *runtime) +{ + snd_pcm_sframes_t avail = runtime->status->hw_ptr + runtime->buffer_size - runtime->control->appl_ptr; + if (avail < 0) + avail += runtime->boundary; + else if ((snd_pcm_uframes_t) avail >= runtime->boundary) + avail -= runtime->boundary; + return avail; +} + +/* + * result is: 0 ... (boundary - 1) + */ +static inline snd_pcm_uframes_t snd_pcm_capture_avail(snd_pcm_runtime_t *runtime) +{ + snd_pcm_sframes_t avail = runtime->status->hw_ptr - runtime->control->appl_ptr; + if (avail < 0) + avail += runtime->boundary; + return avail; +} + +static inline snd_pcm_sframes_t snd_pcm_playback_hw_avail(snd_pcm_runtime_t *runtime) +{ + return runtime->buffer_size - snd_pcm_playback_avail(runtime); +} + +static inline snd_pcm_sframes_t snd_pcm_capture_hw_avail(snd_pcm_runtime_t *runtime) +{ + return runtime->buffer_size - snd_pcm_capture_avail(runtime); +} + +/** + * snd_pcm_playback_ready - check whether the playback buffer is available + * @substream: the pcm substream instance + * + * Checks whether enough free space is available on the playback buffer. + * + * Returns non-zero if available, or zero if not. + */ +static inline int snd_pcm_playback_ready(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + return snd_pcm_playback_avail(runtime) >= runtime->control->avail_min; +} + +/** + * snd_pcm_capture_ready - check whether the capture buffer is available + * @substream: the pcm substream instance + * + * Checks whether enough capture data is available on the capture buffer. + * + * Returns non-zero if available, or zero if not. + */ +static inline int snd_pcm_capture_ready(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + return snd_pcm_capture_avail(runtime) >= runtime->control->avail_min; +} + +/** + * snd_pcm_playback_data - check whether any data exists on the playback buffer + * @substream: the pcm substream instance + * + * Checks whether any data exists on the playback buffer. If stop_threshold + * is bigger or equal to boundary, then this function returns always non-zero. + * + * Returns non-zero if exists, or zero if not. + */ +static inline int snd_pcm_playback_data(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + + if (runtime->stop_threshold >= runtime->boundary) + return 1; + return snd_pcm_playback_avail(runtime) < runtime->buffer_size; +} + +/** + * snd_pcm_playback_empty - check whether the playback buffer is empty + * @substream: the pcm substream instance + * + * Checks whether the playback buffer is empty. + * + * Returns non-zero if empty, or zero if not. + */ +static inline int snd_pcm_playback_empty(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + return snd_pcm_playback_avail(runtime) >= runtime->buffer_size; +} + +/** + * snd_pcm_capture_empty - check whether the capture buffer is empty + * @substream: the pcm substream instance + * + * Checks whether the capture buffer is empty. + * + * Returns non-zero if empty, or zero if not. + */ +static inline int snd_pcm_capture_empty(snd_pcm_substream_t *substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + return snd_pcm_capture_avail(runtime) == 0; +} + +static inline void snd_pcm_trigger_done(snd_pcm_substream_t *substream, + snd_pcm_substream_t *master) +{ + substream->runtime->trigger_master = master; +} + +static inline int hw_is_mask(int var) +{ + return var >= SNDRV_PCM_HW_PARAM_FIRST_MASK && + var <= SNDRV_PCM_HW_PARAM_LAST_MASK; +} + +static inline int hw_is_interval(int var) +{ + return var >= SNDRV_PCM_HW_PARAM_FIRST_INTERVAL && + var <= SNDRV_PCM_HW_PARAM_LAST_INTERVAL; +} + +static inline snd_mask_t *hw_param_mask(snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var) +{ + return ¶ms->masks[var - SNDRV_PCM_HW_PARAM_FIRST_MASK]; +} + +static inline snd_interval_t *hw_param_interval(snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var) +{ + return ¶ms->intervals[var - SNDRV_PCM_HW_PARAM_FIRST_INTERVAL]; +} + +static inline const snd_mask_t *hw_param_mask_c(const snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var) +{ + return (const snd_mask_t *)hw_param_mask((snd_pcm_hw_params_t*) params, var); +} + +static inline const snd_interval_t *hw_param_interval_c(const snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var) +{ + return (const snd_interval_t *)hw_param_interval((snd_pcm_hw_params_t*) params, var); +} + +#define params_access(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_ACCESS)) +#define params_format(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_FORMAT)) +#define params_subformat(p) snd_mask_min(hw_param_mask((p), SNDRV_PCM_HW_PARAM_SUBFORMAT)) +#define params_channels(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_CHANNELS)->min +#define params_rate(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_RATE)->min +#define params_period_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIOD_SIZE)->min +#define params_period_bytes(p) ((params_period_size(p)*snd_pcm_format_physical_width(params_format(p))*params_channels(p))/8) +#define params_periods(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_PERIODS)->min +#define params_buffer_size(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_SIZE)->min +#define params_buffer_bytes(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_BUFFER_BYTES)->min +#define params_tick_time(p) hw_param_interval((p), SNDRV_PCM_HW_PARAM_TICK_TIME)->min + + +int snd_interval_refine(snd_interval_t *i, const snd_interval_t *v); +void snd_interval_mul(const snd_interval_t *a, const snd_interval_t *b, snd_interval_t *c); +void snd_interval_div(const snd_interval_t *a, const snd_interval_t *b, snd_interval_t *c); +void snd_interval_muldivk(const snd_interval_t *a, const snd_interval_t *b, + unsigned int k, snd_interval_t *c); +void snd_interval_mulkdiv(const snd_interval_t *a, unsigned int k, + const snd_interval_t *b, snd_interval_t *c); +int snd_interval_list(snd_interval_t *i, unsigned int count, unsigned int *list, unsigned int mask); +int snd_interval_ratnum(snd_interval_t *i, + unsigned int rats_count, ratnum_t *rats, + unsigned int *nump, unsigned int *denp); + +void _snd_pcm_hw_params_any(snd_pcm_hw_params_t *params); +void _snd_pcm_hw_param_setempty(snd_pcm_hw_params_t *params, snd_pcm_hw_param_t var); +int snd_pcm_hw_param_min(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var, + unsigned int val, int *dir); +int snd_pcm_hw_param_max(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var, + unsigned int val, int *dir); +int snd_pcm_hw_param_setinteger(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var); +int snd_pcm_hw_param_first(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var, int *dir); +int snd_pcm_hw_param_last(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var, int *dir); +int snd_pcm_hw_param_near(snd_pcm_substream_t *substream, + snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var, + unsigned int val, int *dir); +int snd_pcm_hw_param_set(snd_pcm_substream_t *pcm, + snd_pcm_hw_params_t *params, + snd_pcm_hw_param_t var, + unsigned int val, int dir); +int snd_pcm_hw_params_choose(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *params); + +int snd_pcm_hw_refine(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *params); +int snd_pcm_hw_params(snd_pcm_substream_t *substream, snd_pcm_hw_params_t *params); + +int snd_pcm_hw_constraints_init(snd_pcm_substream_t *substream); +int snd_pcm_hw_constraints_complete(snd_pcm_substream_t *substream); + +int snd_pcm_hw_constraint_mask(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var, + u_int32_t mask); +int snd_pcm_hw_constraint_mask64(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var, + u_int64_t mask); +int snd_pcm_hw_constraint_minmax(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var, + unsigned int min, unsigned int max); +int snd_pcm_hw_constraint_integer(snd_pcm_runtime_t *runtime, snd_pcm_hw_param_t var); +int snd_pcm_hw_constraint_list(snd_pcm_runtime_t *runtime, + unsigned int cond, + snd_pcm_hw_param_t var, + snd_pcm_hw_constraint_list_t *l); +int snd_pcm_hw_constraint_ratnums(snd_pcm_runtime_t *runtime, + unsigned int cond, + snd_pcm_hw_param_t var, + snd_pcm_hw_constraint_ratnums_t *r); +int snd_pcm_hw_constraint_ratdens(snd_pcm_runtime_t *runtime, + unsigned int cond, + snd_pcm_hw_param_t var, + snd_pcm_hw_constraint_ratdens_t *r); +int snd_pcm_hw_constraint_msbits(snd_pcm_runtime_t *runtime, + unsigned int cond, + unsigned int width, + unsigned int msbits); +int snd_pcm_hw_constraint_step(snd_pcm_runtime_t *runtime, + unsigned int cond, + snd_pcm_hw_param_t var, + unsigned long step); +int snd_pcm_hw_constraint_pow2(snd_pcm_runtime_t *runtime, + unsigned int cond, + snd_pcm_hw_param_t var); +int snd_pcm_hw_rule_add(snd_pcm_runtime_t *runtime, + unsigned int cond, + int var, + snd_pcm_hw_rule_func_t func, void *private, + int dep, ...); + +int snd_pcm_format_signed(snd_pcm_format_t format); +int snd_pcm_format_unsigned(snd_pcm_format_t format); +int snd_pcm_format_linear(snd_pcm_format_t format); +int snd_pcm_format_little_endian(snd_pcm_format_t format); +int snd_pcm_format_big_endian(snd_pcm_format_t format); +int snd_pcm_format_width(snd_pcm_format_t format); /* in bits */ +int snd_pcm_format_physical_width(snd_pcm_format_t format); /* in bits */ +const unsigned char *snd_pcm_format_silence_64(snd_pcm_format_t format); +int snd_pcm_format_set_silence(snd_pcm_format_t format, void *buf, unsigned int frames); +snd_pcm_format_t snd_pcm_build_linear_format(int width, int unsignd, int big_endian); +const char *snd_pcm_format_name(snd_pcm_format_t format); + +void snd_pcm_set_ops(snd_pcm_t * pcm, int direction, snd_pcm_ops_t *ops); +void snd_pcm_set_sync(snd_pcm_substream_t * substream); +int snd_pcm_lib_interleave_len(snd_pcm_substream_t *substream); +int snd_pcm_lib_ioctl(snd_pcm_substream_t *substream, + unsigned int cmd, void *arg); +int snd_pcm_update_hw_ptr(snd_pcm_substream_t *substream); +int snd_pcm_playback_xrun_check(snd_pcm_substream_t *substream); +int snd_pcm_capture_xrun_check(snd_pcm_substream_t *substream); +int snd_pcm_playback_xrun_asap(snd_pcm_substream_t *substream); +int snd_pcm_capture_xrun_asap(snd_pcm_substream_t *substream); +void snd_pcm_playback_silence(snd_pcm_substream_t *substream, snd_pcm_uframes_t new_hw_ptr); +void snd_pcm_tick_prepare(snd_pcm_substream_t *substream); +void snd_pcm_tick_set(snd_pcm_substream_t *substream, unsigned long ticks); +void snd_pcm_tick_elapsed(snd_pcm_substream_t *substream); +void snd_pcm_period_elapsed(snd_pcm_substream_t *substream); +snd_pcm_sframes_t snd_pcm_lib_write(snd_pcm_substream_t *substream, + const void __user *buf, + snd_pcm_uframes_t frames); +snd_pcm_sframes_t snd_pcm_lib_read(snd_pcm_substream_t *substream, + void __user *buf, snd_pcm_uframes_t frames); +snd_pcm_sframes_t snd_pcm_lib_writev(snd_pcm_substream_t *substream, + void __user **bufs, snd_pcm_uframes_t frames); +snd_pcm_sframes_t snd_pcm_lib_readv(snd_pcm_substream_t *substream, + void __user **bufs, snd_pcm_uframes_t frames); + +int snd_pcm_limit_hw_rates(snd_pcm_runtime_t *runtime); + +static inline void snd_pcm_set_runtime_buffer(snd_pcm_substream_t *substream, + struct snd_dma_buffer *bufp) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + if (bufp) { + runtime->dma_buffer_p = bufp; + runtime->dma_area = bufp->area; + runtime->dma_addr = bufp->addr; + runtime->dma_bytes = bufp->bytes; + } else { + runtime->dma_buffer_p = NULL; + runtime->dma_area = NULL; + runtime->dma_addr = 0; + runtime->dma_bytes = 0; + } +} + +/* + * Timer interface + */ + +void snd_pcm_timer_resolution_change(snd_pcm_substream_t *substream); +void snd_pcm_timer_init(snd_pcm_substream_t * substream); +void snd_pcm_timer_done(snd_pcm_substream_t * substream); + +/* + * Memory + */ + +int snd_pcm_lib_preallocate_free(snd_pcm_substream_t *substream); +int snd_pcm_lib_preallocate_free_for_all(snd_pcm_t *pcm); +int snd_pcm_lib_preallocate_pages(snd_pcm_substream_t *substream, + int type, struct device *data, + size_t size, size_t max); +int snd_pcm_lib_preallocate_pages_for_all(snd_pcm_t *pcm, + int type, void *data, + size_t size, size_t max); +int snd_pcm_lib_malloc_pages(snd_pcm_substream_t *substream, size_t size); +int snd_pcm_lib_free_pages(snd_pcm_substream_t *substream); + +#define snd_pcm_substream_sgbuf(substream) ((substream)->runtime->dma_buffer_p->private_data) +#define snd_pcm_sgbuf_pages(size) snd_sgbuf_aligned_pages(size) +#define snd_pcm_sgbuf_get_addr(sgbuf,ofs) snd_sgbuf_get_addr(sgbuf,ofs) +struct page *snd_pcm_sgbuf_ops_page(snd_pcm_substream_t *substream, unsigned long offset); + +/* handle mmap counter - PCM mmap callback should handle this counter properly */ +static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area) +{ + snd_pcm_substream_t *substream = (snd_pcm_substream_t *)area->vm_private_data; + atomic_inc(&substream->runtime->mmap_count); +} + +static inline void snd_pcm_mmap_data_close(struct vm_area_struct *area) +{ + snd_pcm_substream_t *substream = (snd_pcm_substream_t *)area->vm_private_data; + atomic_dec(&substream->runtime->mmap_count); +} + +/* mmap for io-memory area */ +#if defined(CONFIG_X86) || defined(CONFIG_PPC) || defined(CONFIG_ALPHA) +#define SNDRV_PCM_INFO_MMAP_IOMEM SNDRV_PCM_INFO_MMAP +int snd_pcm_lib_mmap_iomem(snd_pcm_substream_t *substream, struct vm_area_struct *area); +#else +#define SNDRV_PCM_INFO_MMAP_IOMEM 0 +#define snd_pcm_lib_mmap_iomem NULL +#endif + +static inline void snd_pcm_limit_isa_dma_size(int dma, size_t *max) +{ + *max = dma < 4 ? 64 * 1024 : 128 * 1024; +} + +/* + * Misc + */ + +#define SNDRV_PCM_DEFAULT_CON_SPDIF (IEC958_AES0_CON_EMPHASIS_NONE|\ + (IEC958_AES1_CON_ORIGINAL<<8)|\ + (IEC958_AES1_CON_PCM_CODER<<8)|\ + (IEC958_AES3_CON_FS_48000<<24)) + +#endif /* __SOUND_PCM_H */ |