Add LIBMTP_Get_Children() to read the list of raw IDs of a folder.

src/libmtp.h

 /**
  * \file libmtp.h
  * Interface to the Media Transfer Protocol library.
  *
  * Copyright (C) 2005-2012 Linus Walleij <triad@df.lth.se>
  * Copyright (C) 2005-2008 Richard A. Low <richard@wentnet.com>
  * Copyright (C) 2007 Ted Bullock <tbullock@canada.com>
  * Copyright (C) 2008 Florent Mertens <flomertens@gmail.com>
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 857 matching lines @@
  */
 LIBMTP_file_t *LIBMTP_new_file_t(void);
 void LIBMTP_destroy_file_t(LIBMTP_file_t*);
 char const * LIBMTP_Get_Filetype_Description(LIBMTP_filetype_t);
 LIBMTP_file_t *LIBMTP_Get_Filelisting(LIBMTP_mtpdevice_t *);
 LIBMTP_file_t *LIBMTP_Get_Filelisting_With_Callback(LIBMTP_mtpdevice_t *,
       LIBMTP_progressfunc_t const, void const * const);
 LIBMTP_file_t * LIBMTP_Get_Files_And_Folders(LIBMTP_mtpdevice_t *,
                                              uint32_t const,
                                              uint32_t const);
+int LIBMTP_Get_Children(LIBMTP_mtpdevice_t *,
+                        uint32_t const,
+                        uint32_t const,
+                        uint32_t **);
 LIBMTP_file_t *LIBMTP_Get_Filemetadata(LIBMTP_mtpdevice_t *, uint32_t const);
 int LIBMTP_Get_File_Chunk(LIBMTP_mtpdevice_t*, uint32_t, uint32_t, uint32_t,
                           unsigned char**, uint32_t*);
 int LIBMTP_Get_File_To_File(LIBMTP_mtpdevice_t*, uint32_t, char const * const,
                         LIBMTP_progressfunc_t const, void const * const);
 int LIBMTP_Get_File_To_File_Descriptor(LIBMTP_mtpdevice_t*,
                                        uint32_t const,
                                        int const,
                                        LIBMTP_progressfunc_t const,
                                        void const * const);
@@ skipping 131 matching lines @@
 
 
 /** @} */
 
 /* End of C++ exports */
 #ifdef __cplusplus
 }
 #endif
 
 #endif /* LIBMTP_H_INCLUSION_GUARD */