Provided by: libmtp-doc_1.1.21-3.1build1_all 

NAME
libmtp - folders
SYNOPSIS
Functions
LIBMTP_folder_t * LIBMTP_new_folder_t (void)
void LIBMTP_destroy_folder_t (LIBMTP_folder_t *)
LIBMTP_folder_t * LIBMTP_Get_Folder_List (LIBMTP_mtpdevice_t *)
LIBMTP_folder_t * LIBMTP_Get_Folder_List_For_Storage (LIBMTP_mtpdevice_t *, uint32_t const)
LIBMTP_folder_t * LIBMTP_Find_Folder (LIBMTP_folder_t *, uint32_t const)
uint32_t LIBMTP_Create_Folder (LIBMTP_mtpdevice_t *, char *, uint32_t, uint32_t)
int LIBMTP_Set_Folder_Name (LIBMTP_mtpdevice_t *, LIBMTP_folder_t *, const char *)
Detailed Description
Function Documentation
uint32_t LIBMTP_Create_Folder (LIBMTP_mtpdevice_t * device, char * name, uint32_t parent_id, uint32_t
storage_id)
This create a folder on the current MTP device. The PTP name for a folder is 'association'. The PTP/MTP
devices does not have an internal 'folder' concept really, it contains a flat list of all files and some
file are 'associations' that other files and folders may refer to as its 'parent'.
Parameters
device a pointer to the device to create the folder on.
name the name of the new folder. Note this can be modified if the device does not support all the
characters in the name.
parent_id id of parent folder to add the new folder to, or 0xFFFFFFFF to put it in the root
directory.
storage_id id of the storage to add this new folder to. notice that you cannot mismatch storage id
and parent id: they must both be on the same storage! Pass in 0 if you want to create this folder on
the default storage.
Returns
id to new folder or 0 if an error occurred
References DEVICE_FLAG_BROKEN_SEND_OBJECT_PROPLIST, LIBMTP_mtpdevice_struct::params,
strip_7bit_from_utf8(), and LIBMTP_mtpdevice_struct::usbinfo.
void LIBMTP_destroy_folder_t (LIBMTP_folder_t * folder)
This recursively deletes the memory for a folder structure. This shall typically be called on a top-level
folder list to destroy the entire folder tree.
Parameters
folder folder structure to destroy
See also
LIBMTP_new_folder_t()
References LIBMTP_folder_struct::child, LIBMTP_destroy_folder_t(), LIBMTP_folder_struct::name, and
LIBMTP_folder_struct::sibling.
Referenced by LIBMTP_destroy_folder_t(), and LIBMTP_Get_Folder_List_For_Storage().
LIBMTP_folder_t * LIBMTP_Find_Folder (LIBMTP_folder_t * folderlist, uint32_t id)
Helper function. Returns a folder structure for a specified id.
Parameters
folderlist list of folders to search @id id of folder to look for
Returns
a folder or NULL if not found
References LIBMTP_folder_struct::child, LIBMTP_folder_struct::folder_id, LIBMTP_Find_Folder(), and
LIBMTP_folder_struct::sibling.
Referenced by LIBMTP_Find_Folder().
LIBMTP_folder_t * LIBMTP_Get_Folder_List (LIBMTP_mtpdevice_t * device)
This returns a list of all folders available on the current MTP device.
Parameters
device a pointer to the device to get the folder listing for.
Returns
a list of folders
References LIBMTP_Get_Folder_List_For_Storage().
LIBMTP_folder_t * LIBMTP_Get_Folder_List_For_Storage (LIBMTP_mtpdevice_t * device, uint32_t const storage)
This returns a list of all folders available on the current MTP device.
Parameters
device a pointer to the device to get the folder listing for.
storage a storage ID to get the folder list from
Returns
a list of folders
References LIBMTP_folder_struct::child, LIBMTP_folder_struct::folder_id, LIBMTP_destroy_folder_t(),
LIBMTP_new_folder_t(), LIBMTP_folder_struct::name, LIBMTP_mtpdevice_struct::params,
LIBMTP_folder_struct::parent_id, LIBMTP_folder_struct::sibling, and LIBMTP_folder_struct::storage_id.
Referenced by LIBMTP_Get_Folder_List().
LIBMTP_folder_t * LIBMTP_new_folder_t (void)
This creates a new folder structure and allocates memory for it. Notice that if you add strings to this
structure they will be freed by the corresponding LIBMTP_folder_track_t operation later, so be careful of
using strdup() when assigning strings, e.g.:
Returns
a pointer to the newly allocated folder structure.
See also
LIBMTP_destroy_folder_t()
References LIBMTP_folder_struct::folder_id.
Referenced by LIBMTP_Get_Folder_List_For_Storage().
int LIBMTP_Set_Folder_Name (LIBMTP_mtpdevice_t * device, LIBMTP_folder_t * folder, const char * newname)
This function renames a single folder. This simply means that the PTP_OPC_ObjectFileName property is
updated, if this is supported by the device.
Parameters
device a pointer to the device that contains the file.
folder the folder metadata of the folder to rename. On success, the name member is updated. Be aware,
that this name can be different than newname depending of device restrictions.
newname the new name for this object.
Returns
0 on success, any other value means failure.
References LIBMTP_folder_struct::folder_id, and LIBMTP_folder_struct::name.
Author
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libmtp Version 1.1.21 folders(3)