tarfile.h

   1 /*
   2 Calf Box, an open source musical instrument.
   3 Copyright (C) 2010-2013 Krzysztof Foltman
   4
   5 This program is free software: you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation, either version 3 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #ifndef CBOX_TARFILE_H
  20 #define CBOX_TARFILE_H
  21
  22 #include <glib.h>
  23 #include <stdint.h>
  24 #include <sndfile.h>
  25
  26 struct cbox_taritem
  27 {
  28     gchar *filename;
  29     gchar *filename_nc;
  30     uint64_t offset;
  31     uint64_t size;
  32     int refs;
  33 };
  34
  35 struct cbox_tarfile
  36 {
  37     int fd;
  38     int refs;
  39     GHashTable *items_byname;
  40     GHashTable *items_byname_nc;
  41     char *file_pathname;
  42 };
  43
  44 struct cbox_tarpool
  45 {
  46     GHashTable *files;
  47 };
  48
  49 struct cbox_tarfile_sndstream
  50 {
  51     struct cbox_tarfile *file;
  52     struct cbox_taritem *item;
  53     uint64_t filepos;
  54 };
  55
  56 extern struct SF_VIRTUAL_IO cbox_taritem_virtual_io;
  57
  58 extern struct cbox_tarfile *cbox_tarfile_open(const char *pathname, GError **error);
  59
  60 extern struct cbox_taritem *cbox_tarfile_get_item_by_name(struct cbox_tarfile *tarfile, const char *item_filename, gboolean ignore_case);
  61 extern int cbox_tarfile_openitem(struct cbox_tarfile *tarfile, struct cbox_taritem *item);
  62 extern void cbox_tarfile_closeitem(struct cbox_tarfile *tarfile, struct cbox_taritem *item, int fd);
  63
  64 extern SNDFILE *cbox_tarfile_opensndfile(struct cbox_tarfile *tarfile, struct cbox_taritem *item, struct cbox_tarfile_sndstream *stream, SF_INFO *sfinfo);
  65 // No need to close - it reuses the cbox_tarfile file descriptor
  66
  67 extern void cbox_tarfile_destroy(struct cbox_tarfile *tf);
  68
  69 extern struct cbox_tarpool *cbox_tarpool_new(void);
  70 extern struct cbox_tarfile *cbox_tarpool_get_tarfile(struct cbox_tarpool *pool, const char *name, GError **error);
  71 extern void cbox_tarpool_release_tarfile(struct cbox_tarpool *pool, struct cbox_tarfile *file);
  72 extern void cbox_tarpool_destroy(struct cbox_tarpool *pool);
  73
  74 #endif