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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 Ray Lambert
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "abrepeat.h"
#ifdef AB_REPEAT_ENABLE
unsigned int ab_A_marker IDATA_ATTR = AB_MARKER_NONE;
unsigned int ab_B_marker IDATA_ATTR = AB_MARKER_NONE;
static inline bool ab_A_marker_set(void)
{
return ab_A_marker != AB_MARKER_NONE;
}
static inline bool ab_B_marker_set(void)
{
return ab_B_marker != AB_MARKER_NONE;
}
void ab_end_of_track_report(void)
{
if ( ab_A_marker_set() && ! ab_B_marker_set() )
{
ab_jump_to_A_marker();
}
}
void ab_repeat_init(void)
{
static bool ab_initialized = false;
if ( ! ab_initialized )
{
ab_initialized = true;
}
}
/* determines if the given song position is earlier than the A mark;
intended for use in handling the jump NEXT and PREV commands */
bool ab_before_A_marker(unsigned int song_position)
{
return (ab_A_marker != AB_MARKER_NONE)
&& (song_position < ab_A_marker);
}
/* determines if the given song position is later than the A mark;
intended for use in handling the jump PREV command */
bool ab_after_A_marker(unsigned int song_position)
{
/* following is the size of the virtual A marker; we pretend that the A marker
is larger than a single instant in order to give the user time to hit PREV again
to jump back to the start of the song; it should be large enough to allow a
reasonable amount of time for the typical user to react */
#define A_MARKER_VIRTUAL_SIZE 1000
return (ab_A_marker != AB_MARKER_NONE)
&& (song_position > (ab_A_marker+A_MARKER_VIRTUAL_SIZE));
}
void ab_jump_to_A_marker(void)
{
audio_ff_rewind(ab_A_marker);
}
void ab_reset_markers(void)
{
ab_A_marker = AB_MARKER_NONE;
ab_B_marker = AB_MARKER_NONE;
}
/* following is a fudge factor to help overcome the latency between
the time the user hears the passage they want to mark and the time
they actually press the button; the actual song position is adjusted
by this fudge factor when setting a mark */
#define EAR_TO_HAND_LATENCY_FUDGE 200
void ab_set_A_marker(unsigned int song_position)
{
ab_A_marker = song_position;
ab_A_marker = (ab_A_marker >= EAR_TO_HAND_LATENCY_FUDGE)
? (ab_A_marker - EAR_TO_HAND_LATENCY_FUDGE) : 0;
/* check if markers are out of order */
if ( (ab_B_marker != AB_MARKER_NONE) && (ab_A_marker > ab_B_marker) )
ab_B_marker = AB_MARKER_NONE;
}
void ab_set_B_marker(unsigned int song_position)
{
ab_B_marker = song_position;
ab_B_marker = (ab_B_marker >= EAR_TO_HAND_LATENCY_FUDGE)
? (ab_B_marker - EAR_TO_HAND_LATENCY_FUDGE) : 0;
/* check if markers are out of order */
if ( (ab_A_marker != AB_MARKER_NONE) && (ab_B_marker < ab_A_marker) )
ab_A_marker = AB_MARKER_NONE;
}
bool ab_get_A_marker(unsigned *song_position)
{
*song_position = ab_A_marker;
return ab_A_marker_set();
}
bool ab_get_B_marker(unsigned *song_position)
{
*song_position = ab_B_marker;
return ab_B_marker_set();
}
#endif /* AB_REPEAT_ENABLE */
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