player.h

   1 /*
   2  * Copyright (C) 2008 Mark Hills <mark@pogo.org.uk>
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11  * General Public License version 2 for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License
  14  * version 2 along with this program; if not, write to the Free
  15  * Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  16  * MA 02110-1301, USA.
  17  *
  18  */
  19
  20 #ifndef PLAYER_H
  21 #define PLAYER_H
  22
  23 #include "track.h"
  24
  25 #define PLAYER_RATE 44100
  26 #define PLAYER_CHANNELS 2
  27
  28 struct player_t {
  29     int reconnect; /* Re-sync the offset at next opportunity */
  30
  31     /* Current playback parameters */
  32
  33     double position,
  34         last_difference; /* last known position minus target_position */
  35     float target_pitch, /* pitch from turntable */
  36         sync_pitch, /* pitch required to sync to timecode signal */
  37         pitch, /* after filtering */
  38         volume;
  39
  40     signed int target_position,
  41         offset, /* track start point in timecode */
  42         safe; /* copied from timecoder_t */
  43
  44     struct track_t *track;
  45     struct timecoder_t *timecoder;
  46 };
  47
  48 void player_init(struct player_t *pl);
  49 void player_clear(struct player_t *pl);
  50
  51 void player_connect_timecoder(struct player_t *pl, struct timecoder_t *tc);
  52 void player_disconnect_timecoder(struct player_t *pl);
  53
  54 int player_control(struct player_t *pl, float pitch, float volume,
  55                    int timecode_known, double target_position);
  56 int player_recue(struct player_t *pl);
  57
  58 int player_collect(struct player_t *pl, signed short *pcm, int samples);
  59
  60 void player_connect_track(struct player_t *pl, struct track_t *tr);
  61
  62 #endif