videobuf-core.c File Reference

#include <linux/init.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <media/videobuf-core.h>

Go to the source code of this file.

Macros
#define	MAGIC_BUFFER   0x20070728
#define	MAGIC_CHECK(is, should)
#define	dprintk(level, fmt, arg...)
#define	CALL(q, f, arg...)   ((q->int_ops->f) ? q->int_ops->f(arg) : 0)

Functions
	module_param (debug, int, 0644)
	MODULE_DESCRIPTION ("helper module to manage video4linux buffers")
	MODULE_AUTHOR ("Mauro Carvalho Chehab <[email protected]>")
	MODULE_LICENSE ("GPL")
struct videobuf_buffer *	videobuf_alloc_vb (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_alloc_vb)
int	videobuf_waiton (struct videobuf_queue *q, struct videobuf_buffer *vb, int non_blocking, int intr)
	EXPORT_SYMBOL_GPL (videobuf_waiton)
int	videobuf_iolock (struct videobuf_queue *q, struct videobuf_buffer *vb, struct v4l2_framebuffer *fbuf)
	EXPORT_SYMBOL_GPL (videobuf_iolock)
void *	videobuf_queue_to_vaddr (struct videobuf_queue *q, struct videobuf_buffer *buf)
	EXPORT_SYMBOL_GPL (videobuf_queue_to_vaddr)
void	videobuf_queue_core_init (struct videobuf_queue *q, const struct videobuf_queue_ops *ops, struct device *dev, spinlock_t *irqlock, enum v4l2_buf_type type, enum v4l2_field field, unsigned int msize, void *priv, struct videobuf_qtype_ops *int_ops, struct mutex *ext_lock)
	EXPORT_SYMBOL_GPL (videobuf_queue_core_init)
int	videobuf_queue_is_busy (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_queue_is_busy)
void	videobuf_queue_cancel (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_queue_cancel)
enum v4l2_field	videobuf_next_field (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_next_field)
int	videobuf_mmap_free (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_mmap_free)
int	__videobuf_mmap_setup (struct videobuf_queue *q, unsigned int bcount, unsigned int bsize, enum v4l2_memory memory)
	EXPORT_SYMBOL_GPL (__videobuf_mmap_setup)
int	videobuf_mmap_setup (struct videobuf_queue *q, unsigned int bcount, unsigned int bsize, enum v4l2_memory memory)
	EXPORT_SYMBOL_GPL (videobuf_mmap_setup)
int	videobuf_reqbufs (struct videobuf_queue *q, struct v4l2_requestbuffers *req)
	EXPORT_SYMBOL_GPL (videobuf_reqbufs)
int	videobuf_querybuf (struct videobuf_queue *q, struct v4l2_buffer *b)
	EXPORT_SYMBOL_GPL (videobuf_querybuf)
int	videobuf_qbuf (struct videobuf_queue *q, struct v4l2_buffer *b)
	EXPORT_SYMBOL_GPL (videobuf_qbuf)
int	videobuf_dqbuf (struct videobuf_queue *q, struct v4l2_buffer *b, int nonblocking)
	EXPORT_SYMBOL_GPL (videobuf_dqbuf)
int	videobuf_streamon (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_streamon)
int	videobuf_streamoff (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_streamoff)
ssize_t	videobuf_read_one (struct videobuf_queue *q, char __user *data, size_t count, loff_t *ppos, int nonblocking)
	EXPORT_SYMBOL_GPL (videobuf_read_one)
int	videobuf_read_start (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_read_start)
void	videobuf_read_stop (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_read_stop)
void	videobuf_stop (struct videobuf_queue *q)
	EXPORT_SYMBOL_GPL (videobuf_stop)
ssize_t	videobuf_read_stream (struct videobuf_queue *q, char __user *data, size_t count, loff_t *ppos, int vbihack, int nonblocking)
	EXPORT_SYMBOL_GPL (videobuf_read_stream)
unsigned int	videobuf_poll_stream (struct file *file, struct videobuf_queue *q, poll_table *wait)
	EXPORT_SYMBOL_GPL (videobuf_poll_stream)
int	videobuf_mmap_mapper (struct videobuf_queue *q, struct vm_area_struct *vma)
	EXPORT_SYMBOL_GPL (videobuf_mmap_mapper)

Macro Definition Documentation

#define CALL	(		q,
			f,
			arg...
	)		((q->int_ops->f) ? q->int_ops->f(arg) : 0)

Definition at line 52 of file videobuf-core.c.

#define dprintk	(		level,
			fmt,
			arg...
	)

Value:

do {                                \
        if (debug >= level)                 \
            printk(KERN_DEBUG "vbuf: " fmt, ## arg);    \
    } while (0)

Definition at line 44 of file videobuf-core.c.

#define MAGIC_BUFFER   0x20070728

Definition at line 26 of file videobuf-core.c.

#define MAGIC_CHECK	(		is,
			should
	)

Value:

do {                                \
        if (unlikely((is) != (should))) {           \
            printk(KERN_ERR                 \
                "magic mismatch: %x (expected %x)\n",   \
                    is, should);            \
            BUG();                      \
        }                           \
    } while (0)

Definition at line 27 of file videobuf-core.c.

Function Documentation

int __videobuf_mmap_setup	(	struct videobuf_queue *	q,
		unsigned int	bcount,
		unsigned int	bsize,
		enum v4l2_memory	memory
	)

Definition at line 379 of file videobuf-core.c.

EXPORT_SYMBOL_GPL

(

videobuf_alloc_vb

)

EXPORT_SYMBOL_GPL

(

videobuf_waiton

)

EXPORT_SYMBOL_GPL

(

videobuf_iolock

)

EXPORT_SYMBOL_GPL

(

videobuf_queue_to_vaddr

)

EXPORT_SYMBOL_GPL

(

videobuf_queue_core_init

)

EXPORT_SYMBOL_GPL

(

videobuf_queue_is_busy

)

EXPORT_SYMBOL_GPL

(

videobuf_queue_cancel

)

EXPORT_SYMBOL_GPL

(

videobuf_next_field

)

EXPORT_SYMBOL_GPL

(

videobuf_mmap_free

)

EXPORT_SYMBOL_GPL

(

__videobuf_mmap_setup

)

EXPORT_SYMBOL_GPL

(

videobuf_mmap_setup

)

EXPORT_SYMBOL_GPL

(

videobuf_reqbufs

)

EXPORT_SYMBOL_GPL

(

videobuf_querybuf

)

EXPORT_SYMBOL_GPL

(

videobuf_qbuf

)

EXPORT_SYMBOL_GPL

(

videobuf_dqbuf

)

EXPORT_SYMBOL_GPL

(

videobuf_streamon

)

EXPORT_SYMBOL_GPL

(

videobuf_streamoff

)

EXPORT_SYMBOL_GPL

(

videobuf_read_one

)

EXPORT_SYMBOL_GPL

(

videobuf_read_start

)

EXPORT_SYMBOL_GPL

(

videobuf_read_stop

)

EXPORT_SYMBOL_GPL

(

videobuf_stop

)

EXPORT_SYMBOL_GPL

(

videobuf_read_stream

)

EXPORT_SYMBOL_GPL

(

videobuf_poll_stream

)

EXPORT_SYMBOL_GPL

(

videobuf_mmap_mapper

)

MODULE_AUTHOR

(

"Mauro Carvalho Chehab <[email protected]>"

)

MODULE_DESCRIPTION

(

"helper module to manage video4linux buffers"

)

MODULE_LICENSE

(

"GPL"

)

module_param	(	debug	,
		int	,
		0644
	)

struct videobuf_buffer* videobuf_alloc_vb ( struct videobuf_queue *  q )

read

Definition at line 55 of file videobuf-core.c.

int videobuf_dqbuf	(	struct videobuf_queue *	q,
		struct v4l2_buffer *	b,
		int	nonblocking
	)

Definition at line 688 of file videobuf-core.c.

int videobuf_iolock	(	struct videobuf_queue *	q,
		struct videobuf_buffer *	vb,
		struct v4l2_framebuffer *	fbuf
	)

Definition at line 119 of file videobuf-core.c.

int videobuf_mmap_free

(

struct videobuf_queue *

q

)

Definition at line 368 of file videobuf-core.c.

int videobuf_mmap_mapper	(	struct videobuf_queue *	q,
		struct vm_area_struct *	vma
	)

Definition at line 1163 of file videobuf-core.c.

int videobuf_mmap_setup	(	struct videobuf_queue *	q,
		unsigned int	bcount,
		unsigned int	bsize,
		enum v4l2_memory	memory
	)

Definition at line 422 of file videobuf-core.c.

enum v4l2_field videobuf_next_field

(

struct videobuf_queue *

q

)

Definition at line 296 of file videobuf-core.c.

unsigned int videobuf_poll_stream	(	struct file *	file,
		struct videobuf_queue *	q,
		poll_table *	wait
	)

Definition at line 1112 of file videobuf-core.c.

int videobuf_qbuf	(	struct videobuf_queue *	q,
		struct v4l2_buffer *	b
	)

Definition at line 521 of file videobuf-core.c.

int videobuf_querybuf	(	struct videobuf_queue *	q,
		struct v4l2_buffer *	b
	)

Definition at line 494 of file videobuf-core.c.

void videobuf_queue_cancel

(

struct videobuf_queue *

q

)

Definition at line 261 of file videobuf-core.c.

void videobuf_queue_core_init	(	struct videobuf_queue *	q,
		const struct videobuf_queue_ops *	ops,
		struct device *	dev,
		spinlock_t *	irqlock,
		enum v4l2_buf_type	type,
		enum v4l2_field	field,
		unsigned int	msize,
		void *	priv,
		struct videobuf_qtype_ops *	int_ops,
		struct mutex *	ext_lock
	)

Definition at line 141 of file videobuf-core.c.

int videobuf_queue_is_busy

(

struct videobuf_queue *

q

)

Definition at line 183 of file videobuf-core.c.

void* videobuf_queue_to_vaddr	(	struct videobuf_queue *	q,
		struct videobuf_buffer *	buf
	)

Definition at line 129 of file videobuf-core.c.

ssize_t videobuf_read_one	(	struct videobuf_queue *	q,
		char __user *	data,
		size_t	count,
		loff_t *	ppos,
		int	nonblocking
	)

Definition at line 867 of file videobuf-core.c.

int videobuf_read_start

(

struct videobuf_queue *

q

)

Definition at line 1005 of file videobuf-core.c.

void videobuf_read_stop

(

struct videobuf_queue *

q

)

Definition at line 1017 of file videobuf-core.c.

ssize_t videobuf_read_stream	(	struct videobuf_queue *	q,
		char __user *	data,
		size_t	count,
		loff_t *	ppos,
		int	vbihack,
		int	nonblocking
	)

Definition at line 1039 of file videobuf-core.c.

int videobuf_reqbufs	(	struct videobuf_queue *	q,
		struct v4l2_requestbuffers *	req
	)

Definition at line 434 of file videobuf-core.c.

void videobuf_stop

(

struct videobuf_queue *

q

)

Definition at line 1025 of file videobuf-core.c.

int videobuf_streamoff

(

struct videobuf_queue *

q

)

Definition at line 766 of file videobuf-core.c.

int videobuf_streamon

(

struct videobuf_queue *

q

)

Definition at line 728 of file videobuf-core.c.

int videobuf_waiton	(	struct videobuf_queue *	q,
		struct videobuf_buffer *	vb,
		int	non_blocking,
		int	intr
	)

Definition at line 87 of file videobuf-core.c.