wavebank.h

   1 /*
   2 Calf Box, an open source musical instrument.
   3 Copyright (C) 2010-2011 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_WAVEBANK_H
  20 #define CBOX_WAVEBANK_H
  21
  22 #include <glib.h>
  23 #include <sndfile.h>
  24
  25 #define MAX_INTERPOLATION_ORDER 3
  26
  27 #define CBOX_WAVEFORM_ERROR cbox_waveform_error_quark()
  28
  29 enum CboxWaveformError
  30 {
  31     CBOX_WAVEFORM_ERROR_FAILED,
  32 };
  33
  34 struct cbox_waveform_level
  35 {
  36     int16_t *data;
  37     uint64_t max_rate;
  38 };
  39
  40 struct cbox_waveform
  41 {
  42     int16_t *data;
  43     SF_INFO info;
  44     int id;
  45     int refcount;
  46     size_t bytes;
  47     size_t preloaded_frames;
  48     gchar *canonical_name;
  49     gchar *display_name;
  50     gboolean has_loop;
  51     uint32_t loop_start, loop_end;
  52
  53     struct cbox_waveform_level *levels;
  54     int level_count;
  55 };
  56
  57 extern struct cbox_command_target cbox_waves_cmd_target;
  58
  59 extern void cbox_wavebank_init(void);
  60 extern struct cbox_waveform *cbox_wavebank_get_waveform(const char *context_name, const char *sample_dir, const char *filename, GError **error);
  61 extern struct cbox_waveform *cbox_wavebank_peek_waveform_by_id(int id);
  62 extern void cbox_wavebank_foreach(void (*cb)(void *user_data, struct cbox_waveform *waveform), void *user_data);
  63 extern void cbox_wavebank_add_std_waveform(const char *name, float (*getfunc)(float v, void *user_data), void *user_data, int levels);
  64 extern int cbox_wavebank_get_count(void);
  65 extern int64_t cbox_wavebank_get_bytes(void);
  66 extern int64_t cbox_wavebank_get_maxbytes(void);
  67 extern void cbox_wavebank_close(void);
  68
  69 extern void cbox_waveform_ref(struct cbox_waveform *waveform);
  70 extern void cbox_waveform_unref(struct cbox_waveform *waveform);
  71
  72
  73 #endif