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/*
* Sweep, a sound wave editor.
*
* Copyright (C) 2000 Conrad Parker
*
* 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 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gdk/gdkkeysyms.h>
#include <sweep/sweep.h>
#include "../src/sweep_app.h" /* XXX */
#if 0
static void
region_reverse (gpointer data, sw_format * format, int nr_frames,
sw_param_set pset, gpointer custom_data)
{
glong i, sw;
gpointer d, e, t;
sw = frames_to_bytes (format, 1);
t = g_malloc (sw);
d = data;
e = d + frames_to_bytes (format, nr_frames);
for (i = 0; i <= nr_frames/2; i++) {
memcpy (t, d, sw);
memcpy (d, e, sw);
memcpy (e, t, sw);
d += sw;
e -= sw;
}
g_free (t);
}
#endif
static sw_sample *
sounddata_reverse (sw_sample * sample, sw_param_set pset,
gpointer custom_data)
{
GList * gl;
sw_sel * sel;
glong i, sw;
sw_sounddata * sounddata;
sw_format * format;
sw_framecount_t nr_frames;
gpointer d, e, t;
sw_framecount_t op_total, run_total;
sw_framecount_t remaining, n;
gboolean active = TRUE;
sounddata = sample_get_sounddata (sample);
format = sounddata->format;
op_total = sounddata_selection_nr_frames (sounddata) / 200;
if (op_total == 0) op_total = 1;
run_total = 0;
sw = frames_to_bytes (format, 1);
t = alloca (sw);
for (gl = sounddata->sels; active && gl; gl = gl->next) {
sel = (sw_sel *)gl->data;
d = sounddata->data + frames_to_bytes (format, sel->sel_start);
nr_frames = sel->sel_end - sel->sel_start;
e = d + frames_to_bytes (format, nr_frames);
remaining = nr_frames/2;
while (active && remaining > 0) {
g_mutex_lock (sample->ops_mutex);
if (sample->edit_state == SWEEP_EDIT_STATE_CANCEL) {
active = FALSE;
} else {
n = MIN (remaining, 1024);
for (i = 0; i <= n; i++) {
memcpy (t, d, sw);
memcpy (d, e, sw);
memcpy (e, t, sw);
d += sw;
e -= sw;
}
remaining -= n;
run_total += n;
sample_set_progress_percent (sample, run_total / op_total);
}
g_mutex_unlock (sample->ops_mutex);
}
}
return sample;
}
static sw_op_instance *
apply_reverse (sw_sample * sample, sw_param_set pset, gpointer custom_data)
{
#if 0
return
perform_filter_region_op (sample, _("Reverse"),
(SweepFilterRegion)region_reverse, pset, NULL);
#endif
return
perform_filter_op (sample, _("Reverse"),
(SweepFilter)sounddata_reverse, pset, NULL);
}
static sw_procedure proc_reverse = {
N_("Reverse"),
N_("Reverse selected regions of a sample"),
"Conrad Parker",
"Copyright (C) 2000",
"http://sweep.sourceforge.net/plugins/reverse",
"Filters/Reverse", /* identifier */
GDK_f, /* accel_key */
GDK_SHIFT_MASK, /* accel_mods */
0, /* nr_params */
NULL, /* param_specs */
NULL, /* suggests() */
apply_reverse,
NULL, /* custom_data */
};
static GList *
reverse_init (void)
{
return g_list_append ((GList *)NULL, &proc_reverse);
}
sw_plugin plugin = {
reverse_init, /* plugin_init */
NULL, /* plugin_cleanup */
};
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