From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/sound/synth/emux/soundfont.c | 25 +++++++------------------
1 files changed, 7 insertions(+), 18 deletions(-)
diff --git a/kernel/sound/synth/emux/soundfont.c b/kernel/sound/synth/emux/soundfont.c
index 31a4ea9..9ebc711 100644
--- a/kernel/sound/synth/emux/soundfont.c
+++ b/kernel/sound/synth/emux/soundfont.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Soundfont generic routines.
* It is intended that these should be used by any driver that is willing
@@ -5,20 +6,6 @@
*
* Copyright (C) 1999 Steve Ratcliffe
* Copyright (c) 1999-2000 Takashi Iwai <tiwai@suse.de>
- *
- * 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
*/
/*
* Deal with reading in of a soundfont. Code follows the OSS way
@@ -764,7 +751,7 @@
/* log2_tbl[i] = log2(i+128) * 0x10000 */
-static int log_tbl[129] = {
+static const int log_tbl[129] = {
0x70000, 0x702df, 0x705b9, 0x7088e, 0x70b5d, 0x70e26, 0x710eb, 0x713aa,
0x71663, 0x71918, 0x71bc8, 0x71e72, 0x72118, 0x723b9, 0x72655, 0x728ed,
0x72b80, 0x72e0e, 0x73098, 0x7331d, 0x7359e, 0x7381b, 0x73a93, 0x73d08,
@@ -856,6 +843,8 @@
int r, p, t;
r = (3 - ((rate >> 6) & 3)) * 3;
p = rate & 0x3f;
+ if (!p)
+ p = 1;
t = end - start;
if (t < 0) t = -t;
if (13 > r)
@@ -868,7 +857,7 @@
/* convert envelope time parameter to soundfont parameters */
/* attack & decay/release time table (msec) */
-static short attack_time_tbl[128] = {
+static const short attack_time_tbl[128] = {
32767, 32767, 5989, 4235, 2994, 2518, 2117, 1780, 1497, 1373, 1259, 1154, 1058, 970, 890, 816,
707, 691, 662, 634, 607, 581, 557, 533, 510, 489, 468, 448, 429, 411, 393, 377,
361, 345, 331, 317, 303, 290, 278, 266, 255, 244, 234, 224, 214, 205, 196, 188,
@@ -879,7 +868,7 @@
11, 11, 10, 10, 10, 9, 9, 8, 8, 8, 8, 7, 7, 7, 6, 0,
};
-static short decay_time_tbl[128] = {
+static const short decay_time_tbl[128] = {
32767, 32767, 22614, 15990, 11307, 9508, 7995, 6723, 5653, 5184, 4754, 4359, 3997, 3665, 3361, 3082,
2828, 2765, 2648, 2535, 2428, 2325, 2226, 2132, 2042, 1955, 1872, 1793, 1717, 1644, 1574, 1507,
1443, 1382, 1324, 1267, 1214, 1162, 1113, 1066, 978, 936, 897, 859, 822, 787, 754, 722,
@@ -902,7 +891,7 @@
/* search an index for specified time from given time table */
static int
-calc_parm_search(int msec, short *table)
+calc_parm_search(int msec, const short *table)
{
int left = 1, right = 127, mid;
while (left < right) {
--
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