int NJB_Discover (njb_t *njbs, int limit, int *n)

int NJB_Open (njb_t *njb)

void NJB_Close (njb_t *njb)

int NJB_Capture (njb_t *njb)

int NJB_Release (njb_t *njb)

void NJB_Ping (njb_t *njb)

int NJB_Get_Disk_Usage (njb_t *njb, u_int64_t *btotal, u_int64_t *bfree)

char * NJB_Get_Owner_String (njb_t *njb)

int NJB_Set_Owner_String (njb_t *njb, const char *name)

int NJB_Get_Bitmap_Dimensions (njb_t *njb, int *x, int *y, int *bytes)

int NJB_Set_Bitmap (njb_t *njb, const unsigned char *bitmap)

njb_keyval_t * NJB_Get_Keys (njb_t *njb)

u_int64_t NJB_Get_NJB1_Libcounter (njb_t *njb)

int NJB_Send_Firmware (njb_t *njb, const char *path, NJB_Xfer_Callback *callback, void *data)

int NJB_Get_Battery_Level (njb_t *njb)

int NJB_Get_Battery_Charging (njb_t *njb)

int NJB_Get_Auxpower (njb_t *njb)

int NJB_Get_SDMI_ID (njb_t *njb, u_int8_t *sdmiid)

const char * NJB_Get_Device_Name (njb_t *njb, int type)

int NJB_Get_Firmware_Revision (njb_t *njb, u_int8_t *major, u_int8_t *minor, u_int8_t *release)

int NJB_Get_Hardware_Revision (njb_t *njb, u_int8_t *major, u_int8_t *minor, u_int8_t *release)

int NJB_Set_Turbo_Mode (njb_t *njb, u_int8_t mode)

This captures a device for usage after opening.

Parameters: njb a pointer to the njb_t object to capture

Returns: 0 on success, -1 on failure

Examples: cursesplay.c, delfile.c, deltr.c, dumpeax.c, dumptime.c, files.c, fwupgrade.c, getfile.c, gettr.c, pl.c, play.c, playlists.c, sendfile.c, sendtr.c, setpbm.c, settime.c, tagtr.c, and tracks.c.

This closes a previously opened and used NJB object.

Parameters: njb a pointer to the njb_t object to close.

Examples: cursesplay.c, delfile.c, deltr.c, dumpeax.c, dumptime.c, files.c, fwupgrade.c, getfile.c, getowner.c, gettr.c, getusage.c, handshake.c, pl.c, play.c, playlists.c, sendfile.c, sendtr.c, setowner.c, setpbm.c, settime.c, and tracks.c.

This scans the USB buses for available devices, i.e. jukeboxes.

Parameters: njbs a pointer to an array of njb_t objects that can be used for storing up to limit objects.

limit the maximum number of njb_t device objects to retrieve (currently unused).

n a pointer to a variable that will hold the number of objects actually retrieved.

Returns: 0 on success, -1 on failure.

Examples: cursesplay.c, delfile.c, deltr.c, dumpeax.c, dumptime.c, files.c, fwupgrade.c, getfile.c, getowner.c, gettr.c, getusage.c, handshake.c, pl.c, play.c, playlists.c, sendfile.c, sendtr.c, setowner.c, setpbm.c, settime.c, tagtr.c, and tracks.c.

This function determines if we are on auxiliary power (charger connected) or not. (It will also signify if the USB power is connected on devices that support it.) One most typical use of this function is to determine the status before any firmware upgrade commence.

Parameters: njb a pointer to the njb_t object to get the auxiliary power status for.

Returns: 1 if we are connected to auxiliary power, 0 if we're not, and -1 if the call failed.

Examples: handshake.c.

This function determines if we are charging the battery or not.

Parameters: njb a pointer to the njb_t object to get the charging status for.

Returns: 1 if we are charging, 0 if we're not charging, and -1 if the call failed.

Examples: handshake.c.

This function returns the current battery level between 0 and 100. The hardware will typically prevent the device from working properly if the battery level is too low, so figures above 50 are the most common.

Parameters: njb a pointer to the njb_t object to get the battery level for.

Returns: the battery level between 0 and 100, or -1 if the function call fails.

Examples: handshake.c.

EXPERIMENTAL: This function returns the dimensions for the bitmap image on the device, in case the bitmap can be set. Returns -1 if the device does not support setting the bitmap. Currently this command only supports sending bitmap to the NJB2, other models are unsupported, so this needs some development.

Parameters: njb a pointer to the jukebox object to use

x Number of pixels on the X axis

y Number of pixels on the Y axis

bytes number of bytes for the entire bitmap image

Returns: 0 on success, -1 if setting bitmap is not possible

See also: NJB_Set_Bitmap()

Examples: setpbm.c.

This function returns the name of the jukebox device as a string.

char *name; name = NJB_Get_Device_Name(njb, 0); if (name != NULL) { printf('Device name: %s\n', name); }

Parameters: njb a pointer to the njb_t object to get the device name for.

type decides whether libnjb should decide what kind of device this is, or if the string from the device itself should be used. 0 = use libnjb detection (based on USB device IDs), 1 = get the string from the device itself. If you set this to type 1, you must first call NJB_Open() on the njb_t object pointer, so this is not suitable when you want to display a selection list of available devices prior to opening one of them.

Returns: a pointer to a string that contains the device name string after a call to this function. The string must not be freed by the caller, because this is a pointer into a string holder inside libnjb! On error, NULL will be returned.

Examples: handshake.c.

This retrieves the amount of currently used disk space in bytes.

Parameters: njb a pointer to the njb_t object to get usage for

btotal a pointer to a 64 bit integer that shall hold the number of total bytes on the device after the call

bfree a pointer to a 64 bit integer that shall hold the number of free bytes on the device after the call

Returns: 0 on success, -1 on failure

Examples: getusage.c.

This function returns the firmware revision for a certain jukebox device. The release parameter will not be valid for the NJB1 since this only has two version numbers.

Parameters: njb a pointer to the njb_t object to get the firmware revision for.

major will hold the major revision number for the firmware after the call, if the call was successful.

minor will hold the minor revision number for the firmware after the call, if the call was successful.

release will hold the release number for the firmware after the call, if the call was successful.

Returns: 0 if the call was successful, -1 on failure.

Examples: handshake.c.

This function returns the hardware revision for a certain jukebox device. This information is hardcoded to '1.0.0' for the NJB1 since that device does not support retrieving the hardware revision.

Parameters: njb a pointer to the njb_t object to get the hardware revision for.

major will hold the major revision number for the hardware after the call, if the call was successful.

minor will hold the minor revision number for the hardware after the call, if the call was successful.

release will hold the release number for the hardware after the call, if the call was successful.

Returns: 0 if the call was successful, -1 on failure.

Examples: handshake.c.

On series 3 devices, this command retrieves some key/value pairs that are believed to be used for DRM schemes. We have no idea of how to use these, just that they make possible to do proper signing of protected WMA files before transfer.

Parameters: njb a pointer to the jukebox object to get the keys from.

Examples: handshake.c.

This retrieves the library counter for the Nomad Jukebox 1 (D.A.P., the original). The library counter can be used to validate a track cache for this device, but not for any other devices. If you have a cache with all tracks, datafiles and playlists (in some self-defined format) you can store it along with this number when your program exits. When you restart your program you can check if the numbers are still the same, and if they are, you can keep using your old track/file/playlist cache and need not re-read that information.

Note that you have to take action to make sure that you do not accidentally lock out series 3 devices! If this function returns zero, always re-read the entire library.

Parameters: njb a pointer to the jukebox object to get the library counter from.

Returns: a library counter, if this is 0, the tracks, playlists and datafiles need to be re-read, i.e. the cached database is invalid.

Examples: handshake.c.

This retrieves the owner string for the device, a string representing the owners name.

Parameters: njb a pointer to the njb_t object to get the owner string for

Returns: a valid owner string or NULL on failure. The string is newly allocated on the heap and should be freed by the caller after use.

Examples: getowner.c, and setowner.c.

This function returns the unique SDMI ID of 16 bytes for a jukebox device. Example:

u_int8_t sdmiid[16]; int result; result = NJB_Get_SDMI_ID(njb, &sdmiid);

Parameters: njb a pointer to the njb_t object to get the SDMI ID for.

sdmiid a pointer to a byte array of 16 bytes (declare this as u_int8_t foo[16];) that will hold the SDMI ID if the function completed successfully.

Returns: 0 on success, -1 on failure.

Examples: handshake.c.

This opens a device for use. This routine will initialize the USB endpoints and interfaces, and allocate an error stack so that error reporting routines can be used after this call.

Parameters: njb a pointer to the NJB object to open

Returns: 0 on success, -1 on failure

Examples: cursesplay.c, delfile.c, deltr.c, dumpeax.c, dumptime.c, files.c, fwupgrade.c, getfile.c, getowner.c, gettr.c, getusage.c, handshake.c, pl.c, play.c, playlists.c, sendfile.c, sendtr.c, setowner.c, setpbm.c, settime.c, tagtr.c, and tracks.c.

This sends a ping ('are you there?') command to the device.

Parameters: njb a pointer to the jukebox object to ping.

Examples: handshake.c.

This releases a captured NJB object after use.

Parameters: njb a pointer to the njb_t object to release

Returns: 0 on success, -1 on failure

Examples: cursesplay.c, delfile.c, deltr.c, dumpeax.c, dumptime.c, files.c, fwupgrade.c, getfile.c, gettr.c, pl.c, play.c, playlists.c, sendfile.c, sendtr.c, setpbm.c, settime.c, tagtr.c, and tracks.c.

EXPERIMENTAL: This function sends a new firmware to the device.

DO NOT TRY OR USE THIS FUNCTION UNLESS YOU ARE 100 PERCENT SURE OF WHAT YOU ARE DOING, IT IS VITALLY DANGEROUS TO YOUR DEVICE AND MAY RENDER IT COMPLETELY USELESS IF USED WITH INVALID DATA.

Parameters: njb a pointer to the njb_t object to send the file to

path a path to the firmware file that shall be downloaded. This file must be the raw firmware chunks as sent across the USB bus to the device.

callback a function that will be called repeatedly to report progress during transfer, used for e.g. displaying progress bars. This may be NULL if you don't like callbacks.

data a voluntary parameter that can associate some user-supplied data with each callback call. It is OK to set this to NULL of course.

Returns: 0 on success, -1 on failure.

Examples: fwupgrade.c.

EXPERIMENTAL: This sets the bitmap (boot-up logo) on the device. It is currently experimental and not all devices support changing the bitmap.

Parameters: njb a pointer to the jukebox object to use

bitmap A raw bitmap image to send to the device. Note that this image shall have the dimensions indicated by a previous NJB_Get_Bitmap_Dimensions() call.

Returns: 0 on success, -1 on failure

See also: NJB_Get_Bitmap_Dimensions()

Examples: setpbm.c.

This sets the owner string for the device, a string representing the owner.

Parameters: njb a pointer to the njb_t object to set the owner string for

name the new owner string

Returns: 0 on success, -1 on failure

Examples: setowner.c.

This function sets the turbo mode to on or off. The default value if the function is not calles is that turbo is ON. We have found that a few (very few) devices will react badly on turbo mode, resulting in bad transfers. This setting is only applicable on the series 3 devices, it will have no effect on the NJB1. (Command available as of libnjb 2.2.4.)

Parameters: njb a pointer to the njb_t object to set the turbo mode for.

mode the turbo mode. NJB_TURBO_ON or NJB_TURBO_OFF.

Returns: 0 if the call was successful, -1 on failure.