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sane-project-backends/backend/artec_eplus48u.h

597 wiersze
19 KiB
C
Czysty Bezpośredni odnośnik Wina Historia

#ifndef ARTEC48U_H
#define ARTEC48U_H
#include "../include/sane/sane.h"
#include "../include/sane/sanei.h"
#include "../include/sane/saneopts.h"
#include <sys/types.h>
#ifdef HAVE_SYS_IPC_H
#include <sys/ipc.h>
#endif
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "../include/sane/sanei_usb.h"
#include "../include/sane/sanei_thread.h"
#define _MAX_ID_LEN 20
/*Uncomment next line for button support. This
actually isn't supported by the frontends. */
/*#define ARTEC48U_USE_BUTTONS 1*/
#define ARTEC48U_PACKET_SIZE 64
#define DECLARE_FUNCTION_NAME(name) \
IF_DBG ( static const char function_name[] = name; )
typedef SANE_Byte Artec48U_Packet[ARTEC48U_PACKET_SIZE];
#define XDBG(args) do { IF_DBG ( DBG args ); } while (0)
/* calculate the minimum/maximum values */
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
/* return the lower/upper 8 bits of a 16 bit word */
#define HIBYTE(w) ((SANE_Byte)(((SANE_Word)(w) >> 8) & 0xFF))
#define LOBYTE(w) ((SANE_Byte)(w))
#define CHECK_DEV_NOT_NULL(dev, func_name) \
do { \
if (!(dev)) \
{ \
XDBG ((3, "%s: BUG: NULL device\n", (func_name))); \
return SANE_STATUS_INVAL; \
} \
} while (SANE_FALSE)
/** Check that the device is open.
*
* @param dev Pointer to the device object (Artec48U_Device).
* @param func_name Function name (for use in debug messages).
*/
#define CHECK_DEV_OPEN(dev, func_name) \
do { \
CHECK_DEV_NOT_NULL ((dev), (func_name)); \
if ((dev)->fd == -1) \
{ \
XDBG ((3, "%s: BUG: device %p not open\n", (func_name), (void*)(dev)));\
return SANE_STATUS_INVAL; \
} \
} while (SANE_FALSE)
#define CHECK_DEV_ACTIVE(dev,func_name) \
do { \
CHECK_DEV_OPEN ((dev), (func_name)); \
if (!(dev)->active) \
{ \
XDBG ((3, "%s: BUG: device %p not active\n", \
(func_name), (void*)(dev))); \
return SANE_STATUS_INVAL; \
} \
} while (SANE_FALSE)
typedef struct Artec48U_Device Artec48U_Device;
typedef struct Artec48U_Scan_Request Artec48U_Scan_Request;
typedef struct Artec48U_Scanner Artec48U_Scanner;
typedef struct Artec48U_Scan_Parameters Artec48U_Scan_Parameters;
typedef struct Artec48U_AFE_Parameters Artec48U_AFE_Parameters;
typedef struct Artec48U_Exposure_Parameters Artec48U_Exposure_Parameters;
typedef struct Artec48U_Line_Reader Artec48U_Line_Reader;
typedef struct Artec48U_Delay_Buffer Artec48U_Delay_Buffer;
enum artec_options
{
OPT_NUM_OPTS = 0,
OPT_MODE_GROUP,
OPT_SCAN_MODE,
OPT_BIT_DEPTH,
OPT_BLACK_LEVEL,
OPT_RESOLUTION,
OPT_ENHANCEMENT_GROUP,
OPT_BRIGHTNESS,
OPT_CONTRAST,
OPT_GAMMA,
OPT_GAMMA_R,
OPT_GAMMA_G,
OPT_GAMMA_B,
OPT_DEFAULT_ENHANCEMENTS,
OPT_GEOMETRY_GROUP,
OPT_TL_X,
OPT_TL_Y,
OPT_BR_X,
OPT_BR_Y,
OPT_CALIBRATION_GROUP,
OPT_CALIBRATE,
OPT_CALIBRATE_SHADING,
#ifdef ARTEC48U_USE_BUTTONS
OPT_BUTTON_STATE,
#endif
/* must come last: */
NUM_OPTIONS
};
/** Artec48U analog front-end (AFE) parameters.
*/
struct Artec48U_AFE_Parameters
{
SANE_Byte r_offset; /**< Red channel offset */
SANE_Byte r_pga; /**< Red channel PGA gain */
SANE_Byte g_offset; /**< Green channel offset (also used for mono) */
SANE_Byte g_pga; /**< Green channel PGA gain (also used for mono) */
SANE_Byte b_offset; /**< Blue channel offset */
SANE_Byte b_pga; /**< Blue channel PGA gain */
};
/** TV9693 exposure time parameters.
*/
struct Artec48U_Exposure_Parameters
{
SANE_Int r_time; /**< Red exposure time */
SANE_Int g_time; /**< Red exposure time */
SANE_Int b_time; /**< Red exposure time */
};
struct Artec48U_Device
{
Artec48U_Device *next;
/** Device file descriptor. */
int fd;
/** Device activation flag. */
SANE_Bool active;
SANE_String_Const name;
SANE_Device sane; /** Scanner model data. */
SANE_String_Const firmware_path;
double gamma_master;
double gamma_r;
double gamma_g;
double gamma_b;
Artec48U_Exposure_Parameters exp_params;
Artec48U_AFE_Parameters afe_params;
Artec48U_AFE_Parameters artec_48u_afe_params;
Artec48U_Exposure_Parameters artec_48u_exposure_params;
SANE_Int optical_xdpi;
SANE_Int optical_ydpi;
SANE_Int base_ydpi;
SANE_Int xdpi_offset; /* in optical_xdpi units */
SANE_Int ydpi_offset; /* in optical_ydpi units */
SANE_Int x_size; /* in optical_xdpi units */
SANE_Int y_size; /* in optical_ydpi units */
/* the number of lines, that we move forward before we start reading the
shading lines */
int shading_offset;
/* the number of lines we read for the black shading buffer */
int shading_lines_b;
/* the number of lines we read for the white shading buffer */
int shading_lines_w;
SANE_Fixed x_offset, y_offset;
SANE_Bool read_active;
SANE_Byte *read_buffer;
size_t requested_buffer_size;
size_t read_pos;
size_t read_bytes_in_buffer;
size_t read_bytes_left;
unsigned int is_epro;
unsigned int epro_mult;
};
/** Scan parameters for artec48u_device_setup_scan().
*
* These parameters describe a low-level scan request; many such requests are
* executed during calibration, and they need to have parameters separate from
* the main request (Artec48U_Scan_Request). E.g., on the BearPaw 2400 TA the
* scan to find the home position is always done at 300dpi 8-bit mono with
* fixed width and height, regardless of the high-level scan parameters.
*/
struct Artec48U_Scan_Parameters
{
SANE_Int xdpi; /**< Horizontal resolution */
SANE_Int ydpi; /**< Vertical resolution */
SANE_Int depth; /**< Number of bits per channel */
SANE_Bool color; /**< Color mode flag */
SANE_Int pixel_xs; /**< Logical width in pixels */
SANE_Int pixel_ys; /**< Logical height in pixels */
SANE_Int scan_xs; /**< Physical width in pixels */
SANE_Int scan_ys; /**< Physical height in pixels */
SANE_Int scan_bpl; /**< Number of bytes per scan line */
SANE_Bool lineart; /**<Lineart is not really supported by device*/
};
/** Parameters for the high-level scan request.
*
* These parameters describe the scan request sent by the SANE frontend.
*/
struct Artec48U_Scan_Request
{
SANE_Fixed x0; /**< Left boundary */
SANE_Fixed y0; /**< Top boundary */
SANE_Fixed xs; /**< Width */
SANE_Fixed ys; /**< Height */
SANE_Int xdpi; /**< Horizontal resolution */
SANE_Int ydpi; /**< Vertical resolution */
SANE_Int depth; /**< Number of bits per channel */
SANE_Bool color; /**< Color mode flag */
};
/** Scan action code (purpose of the scan).
*
* The scan action code affects various scanning mode fields in the setup
* command.
*/
typedef enum Artec48U_Scan_Action
{
SA_CALIBRATE_SCAN_WHITE, /**< Scan white shading buffer */
SA_CALIBRATE_SCAN_BLACK, /**< Scan black shading buffer */
SA_CALIBRATE_SCAN_OFFSET_1, /**< First scan to determine offset */
SA_CALIBRATE_SCAN_OFFSET_2, /**< Second scan to determine offset */
SA_CALIBRATE_SCAN_EXPOSURE_1, /**< First scan to determine offset */
SA_CALIBRATE_SCAN_EXPOSURE_2, /**< Second scan to determine offset */
SA_SCAN /**< Normal scan */
}
Artec48U_Scan_Action;
struct Artec48U_Delay_Buffer
{
SANE_Int line_count;
SANE_Int read_index;
SANE_Int write_index;
unsigned int **lines;
SANE_Byte *mem_block;
};
struct Artec48U_Line_Reader
{
Artec48U_Device *dev; /**< Low-level interface object */
Artec48U_Scan_Parameters params; /**< Scan parameters */
/** Number of pixels in the returned scanlines */
SANE_Int pixels_per_line;
SANE_Byte *pixel_buffer;
Artec48U_Delay_Buffer r_delay;
Artec48U_Delay_Buffer g_delay;
Artec48U_Delay_Buffer b_delay;
SANE_Bool delays_initialized;
SANE_Status (*read) (Artec48U_Line_Reader * reader,
unsigned int **buffer_pointers_return);
};
#ifndef SANE_OPTION
typedef union
{
SANE_Word w;
SANE_Word *wa; /* word array */
SANE_String s;
}
Option_Value;
#endif
struct Artec48U_Scanner
{
Artec48U_Scanner *next;
Artec48U_Scan_Parameters params;
Artec48U_Scan_Request request;
Artec48U_Device *dev;
Artec48U_Line_Reader *reader;
FILE *pipe_handle;
SANE_Pid reader_pid;
int pipe;
int reader_pipe;
SANE_Option_Descriptor opt[NUM_OPTIONS];
Option_Value val[NUM_OPTIONS];
SANE_Status exit_code;
SANE_Parameters sane_params;
SANE_Bool scanning;
SANE_Bool eof;
SANE_Bool calibrated;
SANE_Word gamma_array[4][65536];
SANE_Word contrast_array[65536];
SANE_Word brightness_array[65536];
SANE_Byte *line_buffer;
SANE_Byte *lineart_buffer;
SANE_Word lines_to_read;
unsigned int temp_shading_buffer[3][10240]; /*epro*/
unsigned int *buffer_pointers[3];
unsigned char *shading_buffer_w;
unsigned char *shading_buffer_b;
unsigned int *shading_buffer_white[3];
unsigned int *shading_buffer_black[3];
unsigned long byte_cnt;
};
/** Create a new Artec48U_Device object.
*
* The newly created device object is in the closed state.
*
* @param dev_return Returned pointer to the created device object.
*
* @return
* - #SANE_STATUS_GOOD - the device object was created.
* - #SANE_STATUS_NO_MEM - not enough system resources to create the object.
*/
static SANE_Status artec48u_device_new (Artec48U_Device ** dev_return);
/** Destroy the device object and release all associated resources.
*
* If the device was active, it will be deactivated; if the device was open, it
* will be closed.
*
* @param dev Device object.
*
* @return
* - #SANE_STATUS_GOOD - success.
*/
static SANE_Status artec48u_device_free (Artec48U_Device * dev);
/** Open the scanner device.
*
* This function opens the device special file @a dev_name and tries to detect
* the device model by its USB ID.
*
* If the device is detected successfully (its USB ID is found in the supported
* device list), this function sets the appropriate model parameters.
*
* If the USB ID is not recognized, the device remains unconfigured; an attempt
* to activate it will fail unless artec48u_device_set_model() is used to force
* the parameter set. Note that the open is considered to be successful in
* this case.
*
* @param dev Device object.
* @param dev_name Scanner device name.
*
* @return
* - #SANE_STATUS_GOOD - the device was opened successfully (it still may be
* unconfigured).
*/
static SANE_Status artec48u_device_open (Artec48U_Device * dev);
/** Close the scanner device.
*
* @param dev Device object.
*/
static SANE_Status artec48u_device_close (Artec48U_Device * dev);
/** Activate the device.
*
* The device must be activated before performing any I/O operations with it.
* All device model parameters must be configured before activation; it is
* impossible to change them after the device is active.
*
* This function might need to acquire resources (it calls
* Artec48U_Command_Set::activate). These resources will be released when
* artec48u_device_deactivate() is called.
*
* @param dev Device object.
*
* @return
* - #SANE_STATUS_GOOD - device activated successfully.
* - #SANE_STATUS_INVAL - invalid request (attempt to activate a closed or
* unconfigured device).
*/
static SANE_Status artec48u_device_activate (Artec48U_Device * dev);
/** Deactivate the device.
*
* This function reverses the action of artec48u_device_activate().
*
* @param dev Device object.
*
* @return
* - #SANE_STATUS_GOOD - device deactivated successfully.
* - #SANE_STATUS_INVAL - invalid request (the device was not activated).
*/
static SANE_Status artec48u_device_deactivate (Artec48U_Device * dev);
/** Write a data block to the TV9693 memory.
*
* @param dev Device object.
* @param addr Start address in the TV9693 memory.
* @param size Size of the data block in bytes.
* @param data Data block to write.
*
* @return
* - #SANE_STATUS_GOOD - success.
* - #SANE_STATUS_IO_ERROR - a communication error occurred.
*
* @warning
* @a size must be a multiple of 64 (at least with TV9693), otherwise the
* scanner (and possibly the entire USB bus) will lock up.
*/
static SANE_Status
artec48u_device_memory_write (Artec48U_Device * dev, SANE_Word addr,
SANE_Word size, SANE_Byte * data);
/** Read a data block from the TV9693 memory.
*
* @param dev Device object.
* @param addr Start address in the TV9693 memory.
* @param size Size of the data block in bytes.
* @param data Buffer for the read data.
*
* @return
* - #SANE_STATUS_GOOD - success.
* - #SANE_STATUS_IO_ERROR - a communication error occurred.
*
* @warning
* @a size must be a multiple of 64 (at least with TV9693), otherwise the
* scanner (and possibly the entire USB bus) will lock up.
*/
static SANE_Status
artec48u_device_memory_read (Artec48U_Device * dev, SANE_Word addr,
SANE_Word size, SANE_Byte * data);
/** Execute a control command.
*
* @param dev Device object.
* @param cmd Command packet.
* @param res Result packet (may point to the same buffer as @a cmd).
*
* @return
* - #SANE_STATUS_GOOD - success.
* - #SANE_STATUS_IO_ERROR - a communication error occurred.
*/
static SANE_Status
artec48u_device_req (Artec48U_Device * dev, Artec48U_Packet cmd,
Artec48U_Packet res);
/** Execute a "small" control command.
*
* @param dev Device object.
* @param cmd Command packet; only first 8 bytes are used.
* @param res Result packet (may point to the same buffer as @a cmd).
*
* @return
* - #SANE_STATUS_GOOD - success.
* - #SANE_STATUS_IO_ERROR - a communication error occurred.
*/
static SANE_Status
artec48u_device_small_req (Artec48U_Device * dev, Artec48U_Packet cmd,
Artec48U_Packet res);
/** Read raw data from the bulk-in scanner pipe.
*
* @param dev Device object.
* @param buffer Buffer for the read data.
* @param size Pointer to the variable which must be set to the requested data
* size before call. After completion this variable will hold the number of
* bytes actually read.
*
* @return
* - #SANE_STATUS_GOOD - success.
* - #SANE_STATUS_IO_ERROR - a communication error occurred.
*/
static SANE_Status
artec48u_device_read_raw (Artec48U_Device * dev, SANE_Byte * buffer,
size_t * size);
static SANE_Status
artec48u_device_set_read_buffer_size (Artec48U_Device * dev,
size_t buffer_size);
static SANE_Status
artec48u_device_read_prepare (Artec48U_Device * dev, size_t expected_count);
static SANE_Status
artec48u_device_read (Artec48U_Device * dev, SANE_Byte * buffer,
size_t * size);
static SANE_Status artec48u_device_read_finish (Artec48U_Device * dev);
/**
* Create a new Artec48U_Line_Reader object.
*
* @param dev The low-level scanner interface object.
* @param params Scan parameters prepared by artec48u_device_setup_scan().
* @param reader_return Location for the returned object.
*
* @return
* - SANE_STATUS_GOOD - on success
* - SANE_STATUS_NO_MEM - cannot allocate memory for object or buffers
* - other error values - failure of some internal functions
*/
static SANE_Status
artec48u_line_reader_new (Artec48U_Device * dev,
Artec48U_Scan_Parameters * params,
Artec48U_Line_Reader ** reader_return);
/**
* Destroy the Artec48U_Line_Reader object.
*
* @param reader The Artec48U_Line_Reader object to destroy.
*/
static SANE_Status artec48u_line_reader_free (Artec48U_Line_Reader * reader);
/**
* Read a scanline from the Artec48U_Line_Reader object.
*
* @param reader The Artec48U_Line_Reader object.
* @param buffer_pointers_return Array of pointers to image lines (1 or 3
* elements)
*
* This function reads a full scanline from the device, unpacks it to internal
* buffers and returns pointer to these buffers in @a
* buffer_pointers_return[i]. For monochrome scan, only @a
* buffer_pointers_return[0] is filled; for color scan, elements 0, 1, 2 are
* filled with pointers to red, green, and blue data. The returned pointers
* are valid until the next call to artec48u_line_reader_read(), or until @a
* reader is destroyed.
*
* @return
* - SANE_STATUS_GOOD - read completed successfully
* - other error value - an error occurred
*/
static SANE_Status
artec48u_line_reader_read (Artec48U_Line_Reader * reader,
unsigned int **buffer_pointers_return);
static SANE_Status
artec48u_download_firmware (Artec48U_Device * dev,
SANE_Byte * data, SANE_Word size);
static SANE_Status
artec48u_is_moving (Artec48U_Device * dev, SANE_Bool * moving);
static SANE_Status artec48u_carriage_home (Artec48U_Device * dev);
static SANE_Status artec48u_stop_scan (Artec48U_Device * dev);
static SANE_Status
artec48u_setup_scan (Artec48U_Scanner * s,
Artec48U_Scan_Request * request,
Artec48U_Scan_Action action,
SANE_Bool calculate_only,
Artec48U_Scan_Parameters * params);
static SANE_Status
artec48u_scanner_new (Artec48U_Device * dev,
Artec48U_Scanner ** scanner_return);
static SANE_Status artec48u_scanner_free (Artec48U_Scanner * scanner);
static SANE_Status
artec48u_scanner_start_scan (Artec48U_Scanner * scanner,
Artec48U_Scan_Request * request,
Artec48U_Scan_Parameters * params);
static SANE_Status
artec48u_scanner_read_line (Artec48U_Scanner * scanner,
unsigned int **buffer_pointers,
SANE_Bool shading);
static SANE_Status artec48u_scanner_stop_scan (Artec48U_Scanner * scanner);
static SANE_Status
artec48u_calculate_shading_buffer (Artec48U_Scanner * s, int start, int end,
int resolution, SANE_Bool color);
static SANE_Status download_firmware_file (Artec48U_Device * chip);
static SANE_Status
artec48u_generic_set_exposure_time (Artec48U_Device * dev,
Artec48U_Exposure_Parameters * params);
static SANE_Status
artec48u_generic_set_afe (Artec48U_Device * dev,
Artec48U_AFE_Parameters * params);
static SANE_Status artec48u_generic_start_scan (Artec48U_Device * dev);
static SANE_Status
artec48u_generic_read_scanned_data (Artec48U_Device * dev, SANE_Bool * ready);
static SANE_Status init_options (Artec48U_Scanner * s);
static SANE_Status load_calibration_data (Artec48U_Scanner * s);
static SANE_Status save_calibration_data (Artec48U_Scanner * s);
#endif
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