os/linux-2.6-tag--devboard-R2_10-4/arch/cris/arch-v32/drivers/elphel/cxdma.h File Reference

#include <asm/elphel/ext353.h>
#include <linux/poll.h>

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Go to the source code of this file.

Defines
#define	QTABLES_FPGA   0x01
#define	QTABLES_EXIF   0x02
#define	QTABLES_TABLE   0x04
#define	JPEG_HEADER_SIZE   0x26f
Functions
void	x313_dma_start (void)
int	x313_dma_stop (void)
void	x313_dma_reset_chain (void)
unsigned long	x313_dma_init (void)
int	x313_JPEG_cmd (int cmd)
int	x313_get_JPEG_ctrl (void)
int	x313_JPEG_ctrl (int cmd)
void	setJPEGHeader (int quality, int width, int height)
int	cmoscam_open_dma (struct inode *inode, struct file *filp)
loff_t	x313_dma_lseek (struct file *file, loff_t offset, int orig)
ssize_t	x313_dma_read (struct file *file, char *buf, size_t count, loff_t *off)
int	x313_mmap_dma (struct file *filp, struct vm_area_struct *vma)
ssize_t	x313_dma_write (struct file *file, const char *buf, size_t count, loff_t *off)
void	x313_dma_update_jpeg_header (void)
void	jpeg_set_quality (int quality, int target, void *table)
void	ext_fill_jpeg_mmap_desc (struct ext_jpeg_mmap_desc_t *mdesc)
void	ext_fill_jpeg_mmap_desc_ (struct _ext_jpeg_mmap_desc_t *mdesc)
Variables
unsigned char *	jpeg_header_sbuffer_ptr

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Define Documentation

#define JPEG_HEADER_SIZE   0x26f

Definition at line 36 of file cxdma.h.

#define QTABLES_EXIF   0x02

Definition at line 27 of file cxdma.h.

Referenced by jpeg_set_quality(), setJPEGHeader(), and update_JPEG_quality().

#define QTABLES_FPGA   0x01

Definition at line 26 of file cxdma.h.

Referenced by jpeg_set_quality(), and update_JPEG_quality().

#define QTABLES_TABLE   0x04

Definition at line 28 of file cxdma.h.

Referenced by jpeg_set_quality(), and stream__ioctl().

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Function Documentation

int cmoscam_open_dma	(	struct inode *	inode,
		struct file *	filp
	)

Definition at line 816 of file cxdma.c.

void ext_fill_jpeg_mmap_desc

(

struct ext_jpeg_mmap_desc_t *

mdesc

)

Definition at line 909 of file cxdma.c.

void ext_fill_jpeg_mmap_desc_

(

struct _ext_jpeg_mmap_desc_t *

mdesc

)

Definition at line 924 of file cxdma.c.

void jpeg_set_quality	(	int	quality,
		int	target,
		void *	table
	)

==================================================== ! JPEG HEADER is recalculated together with the FPGA tables ! and due to limitations of the FPGA implementation (no divide) ! header table may slightly deviate from canonical one. ! JPEG quality is stored in the circular buffer, but not JPEG ! header table, so when Q changes, JPEG frame header may be ! out of sync. Possible solutions: ! 1 - always flush circular buffer whan Q is changed or ! 2 - rebuild JPEG header (if different) simulating FPGA ! writes. !====================================================

TODO: Temporary disabling IRQs here - later move FPGA table setup to IRQ-safe function

NOTE

NOTE

NOTE

Definition at line 1263 of file cxdma.c.

void setJPEGHeader	(	int	quality,
		int	width,
		int	height
	)

this function to be called when JPEG header is needed to be sent to user. FPGA is not modified here

Definition at line 1209 of file cxdma.c.

unsigned long x313_dma_init

(

void

)

Definition at line 656 of file cxdma.c.

loff_t x313_dma_lseek	(	struct file *	file,
		loff_t	offset,
		int	orig
	)

Definition at line 833 of file cxdma.c.

ssize_t x313_dma_read	(	struct file *	file,
		char *	buf,
		size_t	count,
		loff_t *	off
	)

Definition at line 1087 of file cxdma.c.

void x313_dma_reset_chain

(

void

)

void x313_dma_start

(

void

)

Definition at line 617 of file cxdma.c.

int x313_dma_stop

(

void

)

Definition at line 607 of file cxdma.c.

void x313_dma_update_jpeg_header

(

void

)

ssize_t x313_dma_write	(	struct file *	file,
		const char *	buf,
		size_t	count,
		loff_t *	off
	)

Definition at line 1181 of file cxdma.c.

int x313_get_JPEG_ctrl

(

void

)

Definition at line 341 of file cxdma.c.

int x313_JPEG_cmd

(

int

cmd

)

Definition at line 351 of file cxdma.c.

int x313_JPEG_ctrl

(

int

cmd

)

Definition at line 335 of file cxdma.c.

int x313_mmap_dma	(	struct file *	filp,
		struct vm_area_struct *	vma
	)

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Variable Documentation

unsigned char* jpeg_header_sbuffer_ptr

Definition at line 274 of file cxdma.c.

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