apps/pcmbuf.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 by Miika Pekkarinen
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21 #ifndef PCMBUF_H
  22 #define PCMBUF_H
  23
  24 /* Commit PCM data */
  25 void *pcmbuf_request_buffer(int *count);
  26 void pcmbuf_write_complete(int count);
  27
  28 /* Init */
  29 size_t pcmbuf_init(unsigned char *bufend);
  30
  31 /* Playback */
  32 void pcmbuf_play_start(void);
  33 void pcmbuf_play_stop(void);
  34 void pcmbuf_pause(bool pause);
  35 void pcmbuf_start_track_change(bool manual_skip);
  36
  37 /* Crossfade */
  38 #ifdef HAVE_CROSSFADE
  39 bool pcmbuf_is_crossfade_active(void);
  40 void pcmbuf_request_crossfade_enable(bool on_off);
  41 bool pcmbuf_is_same_size(void);
  42 #endif
  43
  44 /* Voice */
  45 void *pcmbuf_request_voice_buffer(int *count);
  46 void pcmbuf_write_voice_complete(int count);
  47
  48 /* Debug menu, other metrics */
  49 size_t pcmbuf_free(void);
  50 size_t pcmbuf_get_bufsize(void);
  51 int pcmbuf_descs(void);
  52 int pcmbuf_used_descs(void);
  53 #ifdef ROCKBOX_HAS_LOGF
  54 unsigned char *pcmbuf_get_meminfo(size_t *length);
  55 #endif
  56
  57 /* Misc */
  58 bool pcmbuf_is_lowdata(void);
  59 void pcmbuf_set_low_latency(bool state);
  60 unsigned long pcmbuf_get_latency(void);
  61 void pcmbuf_beep(unsigned int frequency, size_t duration, int amplitude);
  62
  63 #endif