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_monitor_track_change(bool monitor);
  36 bool pcmbuf_start_track_change(bool manual_skip);
  37
  38 /* Crossfade */
  39 #ifdef HAVE_CROSSFADE
  40 bool pcmbuf_is_crossfade_active(void);
  41 void pcmbuf_request_crossfade_enable(bool on_off);
  42 bool pcmbuf_is_same_size(void);
  43 #else
  44 /* Dummy functions with sensible returns */
  45 static inline bool pcmbuf_is_crossfade_active(void)
  46     { return false; }
  47 static inline void pcmbuf_request_crossfade_enable(bool on_off)
  48     { return; (void)on_off; }
  49 static inline bool pcmbuf_is_same_size(void)
  50     { return true; }
  51 #endif
  52
  53 /* Voice */
  54 void *pcmbuf_request_voice_buffer(int *count);
  55 void pcmbuf_write_voice_complete(int count);
  56
  57 /* Debug menu, other metrics */
  58 size_t pcmbuf_free(void);
  59 size_t pcmbuf_get_bufsize(void);
  60 int pcmbuf_descs(void);
  61 int pcmbuf_used_descs(void);
  62 #ifdef ROCKBOX_HAS_LOGF
  63 unsigned char *pcmbuf_get_meminfo(size_t *length);
  64 #endif
  65
  66 /* Misc */
  67 bool pcmbuf_is_lowdata(void);
  68 void pcmbuf_set_low_latency(bool state);
  69 unsigned long pcmbuf_get_latency(void);
  70 void pcmbuf_beep(unsigned int frequency, size_t duration, int amplitude);
  71
  72 #endif