### USB Endpoint and Device Descriptor Examples

Source: http://sane-project.org/unsupported/canon-pixma-mp780.html

Raw output examples showing USB endpoint configuration and device qualifier details for hardware identification.

```text
Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x89  EP 9 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0
  bDeviceProtocol         0
  bMaxPacketSize0        64
  bNumConfigurations      1
```

--------------------------------

### HP Backend Configuration Example

Source: http://sane-project.org/man/sane-hp.5.html

This is a sample configuration file for the SANE HP backend. Empty lines and lines starting with '#' are ignored. Options before the first device name apply as defaults, while options below a device name apply only to that specific device.

```config
/dev/scanner
# this is a comment
/dev/hpscan
option connect-device
```

--------------------------------

### Sample mustek_pp.conf Configuration

Source: http://sane-project.org/man/sane-mustek_pp.5.html

A complete example showing device definitions and associated calibration options.

```text
#
# LifeTec/Medion 9350 on port 0x378
#
scanner "LifeTec 9350" 0x378 cis1200

# Some calibration options (examples!).
option bw 127
option top_skip -0.8

#
# A Mustek 600CP on port 0x3BC
#
scanner "Mustek 600CP" 0x3BC cis600

# Some calibration options (examples!).
option bw 120
```

--------------------------------

### Launch xcam with buffer size

Source: http://sane-project.org/man/sane-stv680.5.html

Start the xcam frontend with the required buffer size option.

```bash
xcam -B
```

--------------------------------

### Sample Microtek2 Configuration

Source: http://sane-project.org/man/sane-microtek2.5.html

A basic example showing global options, device definitions, and comments.

```text
option dump 1
option strip-height 1.0
/dev/scanner
option no-backtrack-option on
# this is a comment
/dev/sge
option lightlid-35 on
```

--------------------------------

### Verify SANE Installation with Test Backend

Source: http://sane-project.org/man/sane.7.html

Use the test backend to confirm that SANE libraries are installed and functioning correctly.

```bash
scanimage -d test -T
```

--------------------------------

### SANE Start

Source: http://sane-project.org/sanei/sanei__backend_8h.html

Starts the SANE acquisition process.

```APIDOC
## start()

### Description
Starts the SANE acquisition process.

### Method
N/A (Function Signature)

### Endpoint
N/A

### Parameters
#### Path Parameters
N/A

#### Query Parameters
N/A

#### Request Body
N/A

### Request Example
N/A

### Response
#### Success Response (200)
- **SANE_Status** - Status of the operation.

#### Response Example
N/A
```

--------------------------------

### Scan ADF Command Line Example

Source: http://sane-project.org/man/sane-matsushita.5.html

Example of using the scanadf command-line tool to scan documents from the feeder. Ensure the device name and output file format are correctly specified.

```bash
scanadf  -d matsushita --output-file scan%04d.pbm --start-count 0 --du-
plex --resolution 300 --feeder-mode="All pages" --paper-size="A4"
```

--------------------------------

### Example Usage of DBG Macro

Source: http://sane-project.org/sanei/sanei__debug_8h.html

An example demonstrating how to use the DBG macro to print a message indicating the opening of a file descriptor.

```c
DBG(1, "sane_open: opening fd %d\n", fd)
```

--------------------------------

### Configure devfs Permissions

Source: http://sane-project.org/man/sane-scsi.5.html

Example configuration lines for /etc/devfs/perms to manage device access permissions.

```text
REGISTER ^sg[^/]* PERMISSIONS root.root 0600
```

```text
REGISTER ^sg4 PERMISSIONS root.scanner 0660
```

--------------------------------

### List Available Devices

Source: http://sane-project.org/man/sane-coolscan3.5.html

Use this command to list all devices recognized by your SANE installation.

```bash
scanimage -L
```

--------------------------------

### Apply GPL copyright notice to source files

Source: http://sane-project.org/COPYING

Attach this notice to the start of each source file to convey the exclusion of warranty and licensing terms.

```text
    <one line to give the program's name and a brief idea of what it does.>
    Copyright (C) 19yy  <name of author>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
```

--------------------------------

### SANE Get Select FD

Source: http://sane-project.org/sanei/sanei__backend_8h.html

Gets the file descriptor for SANE select.

```APIDOC
## get_select_fd()

### Description
Gets the file descriptor for SANE select.

### Method
N/A (Function Signature)

### Endpoint
N/A

### Parameters
#### Path Parameters
N/A

#### Query Parameters
N/A

#### Request Body
N/A

### Request Example
N/A

### Response
#### Success Response (200)
- **SANE_Int*** (pointer) - Pointer to the file descriptor.

#### Response Example
N/A
```

--------------------------------

### void sanei_codec_bin_init(Wire *w)

Source: http://sane-project.org/sanei/sanei__codec__bin_8h.html

Initializes the binary codec by setting the I/O functions of the provided Wire object.

```APIDOC
## void sanei_codec_bin_init(Wire *w)

### Description
Initialize the binary codec. This function sets the I/O functions of the Wire to those of the binary codec, enabling data translation to a byte stream while accounting for byte order.

### Parameters
#### Path Parameters
- **w** (Wire*) - Required - The Wire object to initialize with binary codec I/O functions.
```

--------------------------------

### void sanei_access_init(const char *backend)

Source: http://sane-project.org/sanei/sanei__access_8h.html

Initializes the sanei_access library. This must be called before any other function in the library.

```APIDOC
## void sanei_access_init()

### Description
Initializes the sanei_access library. This function must be called before any other sanei_access function.

### Parameters
#### Path Parameters
- **backend** (const char *) - Required - The name of the backend using this library.
```

--------------------------------

### SANE Start Function Signature

Source: http://sane-project.org/sanei/sanei__wire_8h_source.html

The signature for the SANE start function, used to initiate a SANE operation. It takes a SANE handle as input.

```c
SANE_Status ENTRY() start(SANE_Handle)
```

--------------------------------

### List help options for stv680

Source: http://sane-project.org/man/sane-stv680.5.html

Display available command line options for the stv680 backend.

```bash
scanimage --help -d stv680
```

--------------------------------

### Set Batch Scan Start Page

Source: http://sane-project.org/man/scanimage.1.html

The --batch-start option defines the starting page number for naming files in batch mode. If not specified, the counter begins at 1.

```bash
scanimage --batch-start=5
```

--------------------------------

### Display available options

Source: http://sane-project.org/man/scanimage.1.html

Lists all command-line options supported by the current device.

```bash
scanimage -h
```

--------------------------------

### Sample gt68xx.conf Configuration

Source: http://sane-project.org/man/sane-gt68xx.5.html

This sample configuration demonstrates how to specify USB device IDs, override default parameters, set firmware paths, define vendor and model information, and configure Analog FrontEnd (AFE) settings for the gt68xx SANE backend.

```config
usb 0x05d8 0x4002
override "mustek-scanexpress-1200-ub-plus"
firmware "/opt/gt68xx/SBfw.usb"
vendor "Trust"
model "Compact Scan USB 19200"
afe 0x20 0x02 0x22 0x03 0x1f 0x04
```

--------------------------------

### Set/Get Interface Options

Source: http://sane-project.org/sanei/sanei__pa4s2_8h.html

Allows setting or getting various operational options for the PA4S2 interface. The 'options' parameter is a bitmask, and 'set' indicates whether to set or get the options.

```c
SANE_Status | sanei_pa4s2_options (u_int *options, int set)
```

--------------------------------

### SANE Get Parameters

Source: http://sane-project.org/sanei/sanei__backend_8h.html

Retrieves the parameters for SANE.

```APIDOC
## get_parameters()

### Description
Retrieves the parameters for SANE.

### Method
N/A (Function Signature)

### Endpoint
N/A

### Parameters
#### Path Parameters
N/A

#### Query Parameters
N/A

#### Request Body
N/A

### Request Example
N/A

### Response
#### Success Response (200)
- **SANE_Parameters*** (pointer) - Pointer to SANE parameters structure.

#### Response Example
N/A
```

--------------------------------

### Get Backend Version and Scanner Hardware Info

Source: http://sane-project.org/man/sane-mustek_pp.5.html

Execute this command as root to retrieve the backend version and scanner hardware details. Ensure the 'mustek_pp' backend is listed in dll.conf and the correct port address is set in mustek_pp.conf if your scanner is not detected.

```bash
SANE_DEBUG_MUSTEK_PP=128 scanimage -L
```

--------------------------------

### sanei_thread_begin

Source: http://sane-project.org/sanei/sanei__thread_8h_source.html

Spawns a new task.

```APIDOC
## SANE_Pid sanei_thread_begin(int(*func)(void *args), void *args)

### Description
Spawn a new task.
```

--------------------------------

### GET /options/color-led

Source: http://sane-project.org/man/sane-hp5590.5.html

Retrieves the current state of the color LED indicators.

```APIDOC
## GET /options/color-led

### Description
Returns the state of the color LED indicators.

### Method
GET

### Response
#### Success Response (200)
- **state** (string) - The LED state, either "color" or "black_white".
```

--------------------------------

### GET /sanei_usb_get_descriptor

Source: http://sane-project.org/sanei/sanei__usb_8h.html

Retrieves information from the USB device descriptor for a specified device.

```APIDOC
## GET /sanei_usb_get_descriptor

### Description
Retrieves information from the USB device descriptor. This is useful for obtaining device revisions and other data reported by the USB system.

### Method
GET

### Parameters
#### Path Parameters
- **dn** (SANE_Int) - Required - The device number.
- **desc** (struct sanei_usb_dev_descriptor *) - Required - Pointer to the structure where the information will be stored.

### Response
#### Success Response (SANE_STATUS_GOOD)
- **SANE_STATUS_GOOD** - Operation successful.
- **SANE_STATUS_UNSUPPORTED** - Feature not supported by the OS or SANE.
- **SANE_STATUS_INVAL** - An error occurred.
```

--------------------------------

### GET /options/doc-in-adf

Source: http://sane-project.org/man/sane-hp5590.5.html

Checks if a document is available in the automatic document feeder (ADF).

```APIDOC
## GET /options/doc-in-adf

### Description
Returns the state of the document-available indicator of the ADF.

### Method
GET

### Response
#### Success Response (200)
- **state** (string) - The state, either "yes" or "no".
```

--------------------------------

### sanei_usb_testing_enable_replay

Source: http://sane-project.org/sanei/sanei__usb_8h.html

Initializes the sanei_usb subsystem for replay testing by mocking the USB stack. Must be called before sanei_usb_init().

```APIDOC
## sanei_usb_testing_enable_replay

### Description
Initializes sanei_usb for testing by mocking the whole USB stack. This function must be called before sanei_usb_init().

### Parameters
#### Path Parameters
- **path** (SANE_String_Const) - Required - Path to the XML data file.
- **development_mode** (int) - Required - Enables development mode.
```

--------------------------------

### GET /options/counter-value

Source: http://sane-project.org/man/sane-hp5590.5.html

Retrieves the current counter value displayed on the scanner LCD.

```APIDOC
## GET /options/counter-value

### Description
Returns the counter value as shown on the LCD.

### Method
GET

### Response
#### Success Response (200)
- **value** (integer) - The counter value in the range of 1 to 99.
```

--------------------------------

### Determine SANE version

Source: http://sane-project.org/man/sane-p5.5.html

Command to identify the currently installed version of SANE.

```bash
scanimage -V
```

--------------------------------

### Configure and Attach Devices

Source: http://sane-project.org/sanei/sanei__config_8h_source.html

Parses a configuration file, reads options, and attempts to attach devices found within it. Uses a provided callback for device attachment.

```c
extern SANE_Status sanei_configure_attach (
 const char *config_file,
 SANEI_Config *config,
 SANE_Status (*config_attach)(SANEI_Config *config, const char *devname,
 void *data),
 void *data
);
```

--------------------------------

### void sanei_config_attach_matching_devices()

Source: http://sane-project.org/sanei/sanei__config_8h.html

Expands device name patterns into a list of devices, supporting standard names and SCSI specifications.

```APIDOC
## void sanei_config_attach_matching_devices(const char *name, SANE_Status(*attach)(const char *dev))

### Description
Expands device name patterns into a list of devices. Supports standard device names and SCSI specifications (VENDOR, MODEL, TYPE, BUS, CHANNEL, ID, LUN).

### Parameters
#### Path Parameters
- **name** (const char *) - Required - Device name pattern
- **attach** (SANE_Status(*)(const char *dev)) - Required - Attach function callback
```

--------------------------------

### SANE Entry Points

Source: http://sane-project.org/sanei/sanei__wire_8h_source.html

Documentation for SANE entry points, including read and start operations.

```APIDOC
## SANE_Status ENTRY() read (SANE_Handle, SANE_Byte *, SANE_Int, SANE_Int *)

### Description
Reads data from a SANE device. Internationalization for SANE backends.

### Method
ENTRY

### Endpoint
N/A

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
None

### Response
#### Success Response (SANE_Status)
- **SANE_Status** (SANE_Status) - Status code indicating success or failure.
```

```APIDOC
## SANE_Status ENTRY() start (SANE_Handle)

### Description
Starts a SANE operation. Internationalization for SANE backends.

### Method
ENTRY

### Endpoint
N/A

### Parameters
#### Path Parameters
None

#### Query Parameters
None

#### Request Body
None

### Request Example
None

### Response
#### Success Response (SANE_Status)
- **SANE_Status** (SANE_Status) - Status code indicating success or failure.
```