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  * All files in this archive are subject to the GNU General Public License.
  13  * See the file COPYING in the source tree root for full license agreement.
  14  *
  15  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  16  * KIND, either express or implied.
  17  *
  18  ****************************************************************************/
  19 #ifndef __PEAKMETER_H__
  20 #define __PEAKMETER_H__
  21
  22 #define PEAK_METER_FPS 20
  23
  24 /*#define PM_DEBUG */
  25 #ifdef PM_DEBUG
  26 extern bool peak_meter_histogram(void);
  27 #endif
  28
  29 extern bool peak_meter_enabled;
  30
  31 extern void peak_meter_playback(bool playback);
  32 extern int  peak_meter_draw_get_btn(int x, int y[], int height, int nb_screens);
  33 extern void peak_meter_set_clip_hold(int time);
  34 extern void peak_meter_peek(void);
  35 extern void peak_meter_init_range( bool dbfs, int range_min, int range_max);
  36 extern void peak_meter_init_times(int release, int hold, int clip_hold);
  37 #ifdef HAVE_AGC
  38 extern void peak_meter_get_peakhold(int *peak_left, int *peak_right);
  39 #endif
  40 extern void peak_meter_set_min(int newmin);
  41 extern int  peak_meter_get_min(void);
  42 extern void peak_meter_set_max(int newmax);
  43 extern int  peak_meter_get_max(void);
  44 extern void peak_meter_set_use_dbfs(bool use);
  45 extern bool peak_meter_get_use_dbfs(void);
  46 extern int  calc_db (int isample);
  47 extern int  peak_meter_db2sample(int db);
  48 extern unsigned short peak_meter_scale_value(unsigned short val, int meterwidth);
  49
  50 /* valid values for trigger_status */
  51 #define TRIG_OFF            0x00
  52 #define TRIG_READY          0x01
  53 #define TRIG_STEADY         0x02
  54 #define TRIG_GO             0x03
  55 #define TRIG_POSTREC        0x04
  56 #define TRIG_RETRIG         0x05
  57 #define TRIG_CONTINUE       0x06
  58
  59 extern void peak_meter_define_trigger(
  60     int start_threshold,
  61     long start_duration,
  62     long start_dropout,
  63     int stop_threshold,
  64     long stop_hold_time,
  65     long restart_gap
  66     );
  67
  68 extern void peak_meter_trigger(bool on);
  69 extern int peak_meter_trigger_status(void);
  70 extern void peak_meter_set_trigger_listener(void (*listener)(int status));
  71
  72 #define TRIG_HEIGHT 8
  73
  74 extern void peak_meter_draw_trig(int x[], int y[], int trig_width[],
  75                                       int nb_screens);
  76
  77 extern unsigned short peak_meter_range_min;
  78 extern unsigned short peak_meter_range_max;
  79
  80 #define DB_SCALE_SRC_VALUES_SIZE 12
  81 struct meter_scales{
  82     /* buffered peak values */
  83     int pm_peak_left;
  84     int pm_peak_right;
  85     /* if db_scale_valid is false the content of
  86        db_scale_lcd_coord needs recalculation */
  87     bool db_scale_valid;
  88     /* contains the lcd x coordinates of the magical
  89        scale values in db_scale_src_values */
  90     int db_scale_lcd_coord[DB_SCALE_SRC_VALUES_SIZE];
  91     int last_left;
  92     int last_right;
  93     /* peak hold timeouts */
  94     long pm_peak_timeout_l;
  95     long pm_peak_timeout_r;
  96 };
  97 extern void peak_meter_draw(struct screen *display, struct meter_scales *meter_scales,
  98                                 int x, int y, int width, int height);
  99 extern void peak_meter_screen(struct screen *display, int x, int y, int height);
 100 #endif /* __PEAKMETER_H__ */