apps/recorder/peakmeter.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Philipp Pertermann
  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 __PEAKMETER_H__
  22 #define __PEAKMETER_H__
  23
  24 #define PEAK_METER_FPS 20
  25
  26 /*#define PM_DEBUG */
  27 #ifdef PM_DEBUG
  28 extern bool peak_meter_histogram(void);
  29 #endif
  30
  31 extern int pm_get_clipcount(void);
  32 extern void pm_reset_clipcount(void);
  33 extern void pm_activate_clipcount(bool active);
  34
  35 extern bool peak_meter_enabled;
  36
  37 extern void peak_meter_playback(bool playback);
  38 extern int  peak_meter_draw_get_btn(int action_context, int x, int y[],
  39                                     int height, int nb_screens);
  40 extern void peak_meter_set_clip_hold(int time);
  41 extern void peak_meter_peek(void);
  42 extern void peak_meter_init_range( bool dbfs, int range_min, int range_max);
  43 extern void peak_meter_init_times(int release, int hold, int clip_hold);
  44 #ifdef HAVE_AGC
  45 extern void peak_meter_get_peakhold(int *peak_left, int *peak_right);
  46 #endif
  47 extern int  peak_meter_get_min(void);
  48 extern int  peak_meter_get_max(void);
  49 extern void peak_meter_set_use_dbfs(bool use);
  50 extern bool peak_meter_get_use_dbfs(void);
  51 extern int  calc_db (int isample);
  52 extern int  peak_meter_db2sample(int db);
  53 extern unsigned short peak_meter_scale_value(unsigned short val, int meterwidth);
  54
  55 /* valid values for trigger_status */
  56 #define TRIG_OFF            0x00
  57 #define TRIG_READY          0x01
  58 #define TRIG_STEADY         0x02
  59 #define TRIG_GO             0x03
  60 #define TRIG_POSTREC        0x04
  61 #define TRIG_RETRIG         0x05
  62 #define TRIG_CONTINUE       0x06
  63
  64 extern void peak_meter_define_trigger(
  65     int start_threshold,
  66     long start_duration,
  67     long start_dropout,
  68     int stop_threshold,
  69     long stop_hold_time,
  70     long restart_gap
  71     );
  72
  73 extern void peak_meter_trigger(bool on);
  74 extern int peak_meter_trigger_status(void);
  75 extern void peak_meter_set_trigger_listener(void (*listener)(int status));
  76
  77 #define TRIG_HEIGHT 8
  78
  79 extern void peak_meter_draw_trig(int x[], int y[], int trig_width[],
  80                                       int nb_screens);
  81
  82 #define DB_SCALE_SRC_VALUES_SIZE 12
  83 struct meter_scales{
  84     /* buffered peak values */
  85     int pm_peak_left;
  86     int pm_peak_right;
  87     /* if db_scale_valid is false the content of
  88        db_scale_lcd_coord needs recalculation */
  89     bool db_scale_valid;
  90     /* contains the lcd x coordinates of the magical
  91        scale values in db_scale_src_values */
  92     int db_scale_lcd_coord[DB_SCALE_SRC_VALUES_SIZE];
  93     int last_left;
  94     int last_right;
  95     /* peak hold timeouts */
  96     long pm_peak_timeout_l;
  97     long pm_peak_timeout_r;
  98 };
  99
 100 extern void peak_meter_screen(struct screen *display, int x, int y, int height);
 101 #endif /* __PEAKMETER_H__ */