pcm_native.c File Reference

#include <linux/mm.h>
#include <linux/module.h>
#include <linux/file.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/pm_qos.h>
#include <linux/uio.h>
#include <linux/dma-mapping.h>
#include <sound/core.h>
#include <sound/control.h>
#include <sound/info.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/timer.h>
#include <sound/minors.h>
#include <asm/io.h>

Go to the source code of this file.

Data Structures
struct	snd_pcm_hw_params_old
struct	action_ops

Macros
#define	snd_pcm_ioctl_compat   NULL

Functions
	DEFINE_RWLOCK (snd_pcm_link_rwlock)
	EXPORT_SYMBOL (snd_pcm_link_rwlock)
int	snd_pcm_info (struct snd_pcm_substream *substream, struct snd_pcm_info *info)
int	snd_pcm_info_user (struct snd_pcm_substream *substream, struct snd_pcm_info __user *_info)
int	snd_pcm_hw_refine (struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params)
	EXPORT_SYMBOL (snd_pcm_hw_refine)
int	snd_pcm_status (struct snd_pcm_substream *substream, struct snd_pcm_status *status)
int	snd_pcm_start (struct snd_pcm_substream *substream)
int	snd_pcm_stop (struct snd_pcm_substream *substream, snd_pcm_state_t state)
	EXPORT_SYMBOL (snd_pcm_stop)
int	snd_pcm_drain_done (struct snd_pcm_substream *substream)
int	snd_pcm_hw_constraints_init (struct snd_pcm_substream *substream)
int	snd_pcm_hw_constraints_complete (struct snd_pcm_substream *substream)
void	snd_pcm_release_substream (struct snd_pcm_substream *substream)
	EXPORT_SYMBOL (snd_pcm_release_substream)
int	snd_pcm_open_substream (struct snd_pcm *pcm, int stream, struct file *file, struct snd_pcm_substream **rsubstream)
	EXPORT_SYMBOL (snd_pcm_open_substream)
int	snd_pcm_kernel_ioctl (struct snd_pcm_substream *substream, unsigned int cmd, void *arg)
	EXPORT_SYMBOL (snd_pcm_kernel_ioctl)
int	snd_pcm_lib_default_mmap (struct snd_pcm_substream *substream, struct vm_area_struct *area)
	EXPORT_SYMBOL_GPL (snd_pcm_lib_default_mmap)
int	snd_pcm_mmap_data (struct snd_pcm_substream *substream, struct file *file, struct vm_area_struct *area)
	EXPORT_SYMBOL (snd_pcm_mmap_data)

Variables
struct snd_pcm_hw_constraint_list	snd_pcm_known_rates
struct file_operations	snd_pcm_f_ops [2]

Macro Definition Documentation

#define snd_pcm_ioctl_compat   NULL

Definition at line 3335 of file pcm_native.c.

Function Documentation

DEFINE_RWLOCK

(

snd_pcm_link_rwlock

)

EXPORT_SYMBOL

(

snd_pcm_link_rwlock

)

EXPORT_SYMBOL

(

snd_pcm_hw_refine

)

EXPORT_SYMBOL

(

snd_pcm_stop

)

EXPORT_SYMBOL

(

snd_pcm_release_substream

)

EXPORT_SYMBOL

(

snd_pcm_open_substream

)

EXPORT_SYMBOL

(

snd_pcm_kernel_ioctl

)

EXPORT_SYMBOL

(

snd_pcm_mmap_data

)

EXPORT_SYMBOL_GPL

(

snd_pcm_lib_default_mmap

)

int snd_pcm_drain_done

(

struct snd_pcm_substream *

substream

)

snd_pcm_drain_done - stop the DMA only when the given stream is playback : the PCM substream

After stopping, the state is changed to SETUP. Unlike snd_pcm_stop(), this affects only the given stream.

Definition at line 967 of file pcm_native.c.

int snd_pcm_hw_constraints_complete

(

struct snd_pcm_substream *

substream

)

Definition at line 1935 of file pcm_native.c.

int snd_pcm_hw_constraints_init

(

struct snd_pcm_substream *

substream

)

Definition at line 1811 of file pcm_native.c.

int snd_pcm_hw_refine	(	struct snd_pcm_substream *	substream,
		struct snd_pcm_hw_params *	params
	)

Definition at line 164 of file pcm_native.c.

int snd_pcm_info	(	struct snd_pcm_substream *	substream,
		struct snd_pcm_info *	info
	)

Definition at line 96 of file pcm_native.c.

int snd_pcm_info_user	(	struct snd_pcm_substream *	substream,
		struct snd_pcm_info __user *	_info
	)

Definition at line 123 of file pcm_native.c.

int snd_pcm_kernel_ioctl	(	struct snd_pcm_substream *	substream,
		unsigned int	cmd,
		void *	arg
	)

Definition at line 2797 of file pcm_native.c.

int snd_pcm_lib_default_mmap	(	struct snd_pcm_substream *	substream,
		struct vm_area_struct *	area
	)

Definition at line 3193 of file pcm_native.c.

int snd_pcm_mmap_data	(	struct snd_pcm_substream *	substream,
		struct file *	file,
		struct vm_area_struct *	area
	)

Definition at line 3243 of file pcm_native.c.

int snd_pcm_open_substream	(	struct snd_pcm *	pcm,
		int	stream,
		struct file *	file,
		struct snd_pcm_substream **	rsubstream
	)

Definition at line 2047 of file pcm_native.c.

void snd_pcm_release_substream

(

struct snd_pcm_substream *

substream

)

Definition at line 2023 of file pcm_native.c.

int snd_pcm_start

(

struct snd_pcm_substream *

substream

)

snd_pcm_start - start all linked streams : the PCM substream instance

Definition at line 900 of file pcm_native.c.

int snd_pcm_status	(	struct snd_pcm_substream *	substream,
		struct snd_pcm_status *	status
	)

Definition at line 590 of file pcm_native.c.

int snd_pcm_stop	(	struct snd_pcm_substream *	substream,
		snd_pcm_state_t	state
	)

snd_pcm_stop - try to stop all running streams in the substream group : the PCM substream instance : PCM state after stopping the stream

The state of each stream is then changed to the given state unconditionally.

Definition at line 953 of file pcm_native.c.

Variable Documentation

struct file_operations snd_pcm_f_ops[2]

Initial value:

= {
    {
        .owner =        THIS_MODULE,
        .write =        snd_pcm_write,
        .aio_write =        snd_pcm_aio_write,
        .open =         snd_pcm_playback_open,
        .release =      snd_pcm_release,
        .llseek =       no_llseek,
        .poll =         snd_pcm_playback_poll,
        .unlocked_ioctl =   snd_pcm_playback_ioctl,
        .compat_ioctl =     snd_pcm_ioctl_compat,
        .mmap =         snd_pcm_mmap,
        .fasync =       snd_pcm_fasync,
        .get_unmapped_area =    snd_pcm_get_unmapped_area,
    },
    {
        .owner =        THIS_MODULE,
        .read =         snd_pcm_read,
        .aio_read =     snd_pcm_aio_read,
        .open =         snd_pcm_capture_open,
        .release =      snd_pcm_release,
        .llseek =       no_llseek,
        .poll =         snd_pcm_capture_poll,
        .unlocked_ioctl =   snd_pcm_capture_ioctl,
        .compat_ioctl =     snd_pcm_ioctl_compat,
        .mmap =         snd_pcm_mmap,
        .fasync =       snd_pcm_fasync,
        .get_unmapped_area =    snd_pcm_get_unmapped_area,
    }
}

Definition at line 3474 of file pcm_native.c.

struct snd_pcm_hw_constraint_list snd_pcm_known_rates

Initial value:

= {
    .count = ARRAY_SIZE(rates),
    .list = rates,
}

Definition at line 1784 of file pcm_native.c.