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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/sound/core/seq/seq_midi_emul.c
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@@ -1,24 +1,10 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  GM/GS/XG midi module.
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  *
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  *  Copyright (C) 1999 Steve Ratcliffe
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  *
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  *  Based on awe_wave.c by Takashi Iwai
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- *
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- *   This program is free software; you can redistribute it and/or modify
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- *   it under the terms of the GNU General Public License as published by
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- *   the Free Software Foundation; either version 2 of the License, or
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- *   (at your option) any later version.
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- *
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- *   This program is distributed in the hope that it will be useful,
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- *   but WITHOUT ANY WARRANTY; without even the implied warranty of
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- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- *   GNU General Public License for more details.
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- *
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- *   You should have received a copy of the GNU General Public License
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- *   along with this program; if not, write to the Free Software
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- *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
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- *
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  */
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 /*
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  * This module is used to keep track of the current midi state.
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@@ -44,22 +30,25 @@
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 MODULE_LICENSE("GPL");
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 /* Prototypes for static functions */
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-static void note_off(struct snd_midi_op *ops, void *drv,
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+static void note_off(const struct snd_midi_op *ops, void *drv,
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 		     struct snd_midi_channel *chan,
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 		     int note, int vel);
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-static void do_control(struct snd_midi_op *ops, void *private,
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+static void do_control(const struct snd_midi_op *ops, void *private,
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 		       struct snd_midi_channel_set *chset,
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 		       struct snd_midi_channel *chan,
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 		       int control, int value);
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-static void rpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
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+static void rpn(const struct snd_midi_op *ops, void *drv,
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+		struct snd_midi_channel *chan,
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 		struct snd_midi_channel_set *chset);
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-static void nrpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
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+static void nrpn(const struct snd_midi_op *ops, void *drv,
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+		 struct snd_midi_channel *chan,
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 		 struct snd_midi_channel_set *chset);
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-static void sysex(struct snd_midi_op *ops, void *private, unsigned char *sysex,
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+static void sysex(const struct snd_midi_op *ops, void *private,
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+		  unsigned char *sysex,
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 		  int len, struct snd_midi_channel_set *chset);
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-static void all_sounds_off(struct snd_midi_op *ops, void *private,
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+static void all_sounds_off(const struct snd_midi_op *ops, void *private,
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 			   struct snd_midi_channel *chan);
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-static void all_notes_off(struct snd_midi_op *ops, void *private,
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+static void all_notes_off(const struct snd_midi_op *ops, void *private,
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 			  struct snd_midi_channel *chan);
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 static void snd_midi_reset_controllers(struct snd_midi_channel *chan);
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 static void reset_all_channels(struct snd_midi_channel_set *chset);
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@@ -80,7 +69,7 @@
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  *        be interpreted.
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  */
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 void
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-snd_midi_process_event(struct snd_midi_op *ops,
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+snd_midi_process_event(const struct snd_midi_op *ops,
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 		       struct snd_seq_event *ev,
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 		       struct snd_midi_channel_set *chanset)
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 {
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@@ -243,7 +232,8 @@
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  * release note
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  */
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 static void
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-note_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
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+note_off(const struct snd_midi_op *ops, void *drv,
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+	 struct snd_midi_channel *chan,
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 	 int note, int vel)
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 {
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 	if (chan->gm_hold) {
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@@ -265,7 +255,8 @@
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  * events that need to take place immediately to the driver.
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  */
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 static void
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-do_control(struct snd_midi_op *ops, void *drv, struct snd_midi_channel_set *chset,
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+do_control(const struct snd_midi_op *ops, void *drv,
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+	   struct snd_midi_channel_set *chset,
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 	   struct snd_midi_channel *chan, int control, int value)
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 {
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 	int  i;
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@@ -318,7 +309,7 @@
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 		break;
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 	case MIDI_CTL_MSB_DATA_ENTRY:
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 		chan->control[MIDI_CTL_LSB_DATA_ENTRY] = 0;
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-		/* fall through */
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+		fallthrough;
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 	case MIDI_CTL_LSB_DATA_ENTRY:
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 		if (chan->param_type == SNDRV_MIDI_PARAM_TYPE_REGISTERED)
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 			rpn(ops, drv, chan, chset);
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@@ -416,7 +407,7 @@
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  * Process a rpn message.
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  */
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 static void
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-rpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
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+rpn(const struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
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     struct snd_midi_channel_set *chset)
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 {
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 	int type;
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@@ -456,7 +447,7 @@
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  * Process an nrpn message.
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  */
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 static void
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-nrpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
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+nrpn(const struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
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      struct snd_midi_channel_set *chset)
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 {
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 	/* parse XG NRPNs here if possible */
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@@ -484,15 +475,15 @@
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  * Process a sysex message.
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  */
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 static void
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-sysex(struct snd_midi_op *ops, void *private, unsigned char *buf, int len,
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+sysex(const struct snd_midi_op *ops, void *private, unsigned char *buf, int len,
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       struct snd_midi_channel_set *chset)
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 {
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 	/* GM on */
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-	static unsigned char gm_on_macro[] = {
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+	static const unsigned char gm_on_macro[] = {
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 		0x7e,0x7f,0x09,0x01,
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 	};
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 	/* XG on */
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-	static unsigned char xg_on_macro[] = {
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+	static const unsigned char xg_on_macro[] = {
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 		0x43,0x10,0x4c,0x00,0x00,0x7e,0x00,
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 	};
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 	/* GS prefix
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@@ -501,7 +492,7 @@
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 	 * chorus mode: XX=0x01, YY=0x38, ZZ=0-7
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 	 * master vol:  XX=0x00, YY=0x04, ZZ=0-127
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 	 */
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-	static unsigned char gs_pfx_macro[] = {
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+	static const unsigned char gs_pfx_macro[] = {
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 		0x41,0x10,0x42,0x12,0x40,/*XX,YY,ZZ*/
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 	};
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@@ -598,7 +589,8 @@
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  * all sound off
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  */
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 static void
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-all_sounds_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan)
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+all_sounds_off(const struct snd_midi_op *ops, void *drv,
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+	       struct snd_midi_channel *chan)
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 {
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 	int n;
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@@ -616,7 +608,8 @@
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  * all notes off
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  */
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 static void
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-all_notes_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan)
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+all_notes_off(const struct snd_midi_op *ops, void *drv,
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+	      struct snd_midi_channel *chan)
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 {
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 	int n;
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