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/*
* Copyright (C) 2014 Mark Hills <mark@xwax.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
*/
#include <assert.h>
#include "controller.h"
#include "cues.h"
#include "deck.h"
#include "status.h"
#include "rig.h"
/*
* An empty record, is used briefly until a record is loaded
* to a deck
*/
static const struct record no_record = {
.artist = "",
.title = ""
};
/*
* Initialise a deck
*
* A deck is a logical grouping of the various components which
* reflects the user's view on a deck in the system.
*
* Pre: deck->device, deck->timecoder, deck->importer are valid
*/
int deck_init(struct deck *deck, struct rt *rt)
{
unsigned int rate;
assert(deck->importer != NULL);
if (rt_add_device(rt, &deck->device) == -1)
return -1;
deck->ncontrol = 0;
deck->record = &no_record;
deck->punch = NO_PUNCH;
rate = device_sample_rate(&deck->device);
player_init(&deck->player, rate, track_acquire_empty(), &deck->timecoder);
cues_reset(&deck->cues);
/* The timecoder and player are driven by requests from
* the audio device */
device_connect_timecoder(&deck->device, &deck->timecoder);
device_connect_player(&deck->device, &deck->player);
return 0;
}
void deck_clear(struct deck *deck)
{
/* FIXME: remove from rig and rt */
player_clear(&deck->player);
timecoder_clear(&deck->timecoder);
device_clear(&deck->device);
}
bool deck_is_locked(const struct deck *deck)
{
return (deck->protect && player_is_active(&deck->player));
}
/*
* Load a record from the library to a deck
*/
void deck_load(struct deck *deck, struct record *record)
{
struct track *t;
if (deck_is_locked(deck)) {
status_printf(STATUS_WARN, "Stop deck to load a different track");
return;
}
t = track_acquire_by_import(deck->importer, record->pathname);
if (t == NULL)
return;
deck->record = record;
player_set_track(&deck->player, t); /* passes reference */
}
void deck_recue(struct deck *deck)
{
if (deck_is_locked(deck)) {
status_printf(STATUS_WARN, "Stop deck to recue");
return;
}
player_recue(&deck->player);
}
void deck_clone(struct deck *deck, const struct deck *from)
{
deck->record = from->record;
player_clone(&deck->player, &from->player);
}
/*
* Clear the cue point, ready to be set again
*/
void deck_unset_cue(struct deck *d, unsigned int label)
{
cues_unset(&d->cues, label);
}
/*
* Seek the current playback position to a cue point position,
* or set the cue point if unset
*/
void deck_cue(struct deck *d, unsigned int label)
{
double p;
p = cues_get(&d->cues, label);
if (p == CUE_UNSET)
cues_set(&d->cues, label, player_get_elapsed(&d->player));
else
player_seek_to(&d->player, p);
}
/*
* Seek to a cue point ready to return from it later. Overrides an
* existing punch operation.
*/
void deck_punch_in(struct deck *d, unsigned int label)
{
double p, e;
e = player_get_elapsed(&d->player);
p = cues_get(&d->cues, label);
if (p == CUE_UNSET) {
cues_set(&d->cues, label, e);
return;
}
if (d->punch != NO_PUNCH)
e -= d->punch;
player_seek_to(&d->player, p);
d->punch = p - e;
}
/*
* Return from a cue point
*/
void deck_punch_out(struct deck *d)
{
double e;
if (d->punch == NO_PUNCH)
return;
e = player_get_elapsed(&d->player);
player_seek_to(&d->player, e - d->punch);
d->punch = NO_PUNCH;
}
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