libisp.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/ioctl.h>
#include "libisp.h"
#include "libisp_config.h"

Include dependency graph for libisp.c:

Go to the source code of this file.

Data Structures
struct	avi_isp_offsets

Macros
#define	PRINT(string, ...)   fprintf(stderr, "[libisp->%s()] " string,__FUNCTION__ , ##__VA_ARGS__)
#define	VERBOSE_PRINT(...)
#define	AVI_BASE   0x400000
#define	AVI_SIZE   0x100000
#define	AVI_MASK   (AVI_SIZE - 1)
#define	AVI_ISP_STAT_YUV_MAX_WAIT   3
#define	AVI_ISP_IOGET_OFFSETS   _IOR('F', 0x33, struct avi_isp_offsets)
#define	readl(_addr)   (*((volatile uint32_t *)(_addr)))
#define	writel(_val, _addr)   (*((volatile uint32_t *)(_addr)) = _val)
#define	EXPAND_AS_FUNCTION(_node)

Functions
static int	avi_isp_get_offsets_fd (int fd, struct avi_isp_offsets *off)
	This is taken from libisp. More...
static int	open_isp_fd (struct libisp_context *ctx, int fd)
	This is taken from libisp. More...
int	configure_isp (struct v4l2_device *dev)
int	isp_request_statistics_yuv_window (uint16_t x_start, uint16_t x_end, uint16_t y_start, uint16_t y_end, uint16_t x_odd_inc, uint16_t y_odd_inc)
static int	isp_set_statistics_yuv_window (void)
int	isp_get_statistics_yuv (struct isp_yuv_stats_t *yuv_stats)
static void	memcpy_to_registers (unsigned long addr, const void *reg_base, size_t s)
static void	memcpy_from_registers (void *reg_base, unsigned long addr, size_t s)

Variables
uint8_t	curWait = 0
static struct libisp_context	isp_ctx
uint16_t	requestWindow [6] = {0}
static const unsigned	isp_bases []

---

Data Structure Documentation

avi_isp_offsets

struct avi_isp_offsets

Definition at line 26 of file libisp.c.

Data Fields
uint32_t	chain_bayer
uint32_t	chain_yuv
uint32_t	chroma
uint32_t	gamma_corrector
uint32_t	statistics_yuv

Macro Definition Documentation

AVI_BASE

#define AVI_BASE   0x400000

Definition at line 22 of file libisp.c.

AVI_ISP_IOGET_OFFSETS

#define AVI_ISP_IOGET_OFFSETS   _IOR('F', 0x33, struct avi_isp_offsets)

Definition at line 38 of file libisp.c.

AVI_ISP_STAT_YUV_MAX_WAIT

#define AVI_ISP_STAT_YUV_MAX_WAIT   3

Definition at line 34 of file libisp.c.

AVI_MASK

#define AVI_MASK   (AVI_SIZE - 1)

Definition at line 24 of file libisp.c.

AVI_SIZE

#define AVI_SIZE   0x100000

Definition at line 23 of file libisp.c.

EXPAND_AS_FUNCTION

#define EXPAND_AS_FUNCTION

(

_node

)

Value:

  void avi_isp_ ## _node ## _set_registers(struct libisp_context *c,     \
      struct avi_isp_ ## _node ## _regs const *regs)         \
  {                                                                      \
    memcpy_to_registers(c->offsets[_node], regs, sizeof(*regs));   \
  }                                                                      \
  \
  void avi_isp_ ## _node ## _get_registers(struct libisp_context *c,     \
      struct avi_isp_ ## _node ## _regs *regs)               \
  {                                                                      \
    memcpy_from_registers(regs, c->offsets[_node], sizeof(*regs)); \
  }

Definition at line 343 of file libisp.c.

PRINT

#define PRINT	(		string,
			...
	)		fprintf(stderr, "[libisp->%s()] " string,__FUNCTION__ , ##__VA_ARGS__)

Definition at line 14 of file libisp.c.

readl

#define readl

(

_addr

)

(*((volatile uint32_t *)(_addr)))

Definition at line 41 of file libisp.c.

VERBOSE_PRINT

#define VERBOSE_PRINT

(

...

)

Definition at line 19 of file libisp.c.

writel

#define writel	(		_val,
			_addr
	)		(*((volatile uint32_t *)(_addr)) = _val)

Definition at line 42 of file libisp.c.

Function Documentation

avi_isp_get_offsets_fd()

static int avi_isp_get_offsets_fd ( int  fd, struct avi_isp_offsets *  off  )

static

This is taken from libisp.

Original function takes the videodev name and re-opens it, causing undefined behaviour. Here we reuse the already-opened file descriptor

Definition at line 90 of file libisp.c.

References AVI_ISP_IOGET_OFFSETS, fd, and VERBOSE_PRINT.

Referenced by open_isp_fd().

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configure_isp()

int configure_isp

(

struct v4l2_device *

dev

)

Definition at line 177 of file libisp.c.

References libisp_config::bayer, libisp_config::bayer_inter, libisp_config::chain_yuv_inter, libisp_config::chroma, libisp_config::color_correction, libisp_config::dead_pixel_correction, libisp_config::denoising, dev, libisp_config::eecrf, libisp_config::eecrf_lut, libisp_config::gamma_corrector, libisp_config::gc_bv_lut, libisp_config::gc_gu_lut, libisp_config::gc_ry_lut, libisp_config::green_imbalance, libisp_config::grim_gb, libisp_config::grim_gr, isp_config, isp_ctx, libisp_config::lens_shading_correction, libisp_config::lsc_blue_coeffs, libisp_config::lsc_green_coeffs, libisp_config::lsc_red_coeffs, open_isp_fd(), libisp_config::pedestal, libisp_config::statistics_bayer, libisp_config::statistics_yuv, libisp_config::vlformat_32to40, and libisp_config::vlformat_40to32.

Referenced by video_thread_function().

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isp_get_statistics_yuv()

int isp_get_statistics_yuv

(

struct isp_yuv_stats_t *

yuv_stats

)

Definition at line 261 of file libisp.c.

References isp_yuv_stats_t::ae_histogram_Y, avi_isp_statistics_yuv_ae_histogram_y_regs::ae_histogram_y, avi_isp_statistics_yuv_regs::ae_nb_valid_y, AVI_ISP_STAT_YUV_MAX_WAIT, isp_yuv_stats_t::awb_nb_grey_pixels, avi_isp_statistics_yuv_regs::awb_nb_grey_pixels, isp_yuv_stats_t::awb_sum_U, avi_isp_statistics_yuv_regs::awb_sum_u, isp_yuv_stats_t::awb_sum_V, avi_isp_statistics_yuv_regs::awb_sum_v, isp_yuv_stats_t::awb_sum_Y, avi_isp_statistics_yuv_regs::awb_sum_y, curWait, libisp_context::devmem, isp_config, isp_ctx, isp_set_statistics_yuv_window(), avi_isp_statistics_yuv_regs::measure_req, avi_isp_statistics_yuv_regs::measure_status, isp_yuv_stats_t::nb_valid_Y, libisp_config::statistics_yuv, and VERBOSE_PRINT.

Referenced by update_ae_awb().

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isp_request_statistics_yuv_window()

int isp_request_statistics_yuv_window	(	uint16_t	x_start,
		uint16_t	x_end,
		uint16_t	y_start,
		uint16_t	y_end,
		uint16_t	x_odd_inc,
		uint16_t	y_odd_inc
	)

Definition at line 214 of file libisp.c.

References requestWindow, and VERBOSE_PRINT.

Referenced by mt9f002_init(), and mt9f002_setting_update_resolution().

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isp_set_statistics_yuv_window()

static int isp_set_statistics_yuv_window ( void  )

static

Definition at line 230 of file libisp.c.

References avi_isp_statistics_yuv_regs::awb_threshold, avi_isp_statistics_yuv_regs::circle_pos_x_center, avi_isp_statistics_yuv_regs::circle_pos_x_squared, avi_isp_statistics_yuv_regs::circle_pos_y_center, avi_isp_statistics_yuv_regs::circle_pos_y_squared, avi_isp_statistics_yuv_regs::circle_radius_squared, avi_isp_statistics_yuv_regs::increments_log2, isp_config, requestWindow, libisp_config::statistics_yuv, VERBOSE_PRINT, avi_isp_statistics_yuv_regs::window_pos_x, and avi_isp_statistics_yuv_regs::window_pos_y.

Referenced by isp_get_statistics_yuv().

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memcpy_from_registers()

static void memcpy_from_registers ( void *  reg_base, unsigned long  addr, size_t  s  )

inlinestatic

Definition at line 329 of file libisp.c.

References readl, and s.

memcpy_to_registers()

static void memcpy_to_registers ( unsigned long  addr, const void *  reg_base, size_t  s  )

inlinestatic

Definition at line 315 of file libisp.c.

References s, and writel.

open_isp_fd()

static int open_isp_fd ( struct libisp_context *  ctx, int  fd  )

static

This is taken from libisp.

Original function takes the videodev name and re-opens it, causing undefined behaviour. Here we reuse the already-opened file descriptor

Definition at line 105 of file libisp.c.

References AVI_BASE, libisp_context::avi_base, avi_isp_get_offsets_fd(), AVI_MASK, AVI_SIZE, avi_isp_offsets::chain_bayer, avi_isp_offsets::chain_yuv, avi_isp_offsets::chroma, libisp_context::devmem, fd, avi_isp_offsets::gamma_corrector, isp_bases, ISP_NODE_NR, libisp_context::offsets, and avi_isp_offsets::statistics_yuv.

Referenced by configure_isp().

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Variable Documentation

curWait

uint8_t curWait = 0

Definition at line 35 of file libisp.c.

Referenced by isp_get_statistics_yuv().

isp_bases

const unsigned isp_bases[]

static

Definition at line 51 of file libisp.c.

Referenced by open_isp_fd().

isp_ctx

struct libisp_context isp_ctx

static

Initial value:

= {
  .devmem = -1
}

Definition at line 45 of file libisp.c.

Referenced by configure_isp(), and isp_get_statistics_yuv().

requestWindow

uint16_t requestWindow[6] = {0}

Definition at line 49 of file libisp.c.

Referenced by isp_request_statistics_yuv_window(), and isp_set_statistics_yuv_window().