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ALSA: seq: Constify struct snd_midi_op

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Change the argument of snd_midi_process_event() to receive a const
snd_midi_op pointer and its callers respectively.  This allows further
optimizations.

There should be no functional changes by this patch.

Link: https://lore.kernel.org/r/20200103081714.9560-30-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2020-01-03 09:16:45 +01:00
parent d25ff26840
commit aad7ebb544
6 changed files with 28 additions and 20 deletions
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3
include/sound/seq_midi_emul.h
View File

@ -174,7 +174,8 @@ enum {
};
/* Prototypes for midi_process.c */
void snd_midi_process_event(struct snd_midi_op *ops, struct snd_seq_event *ev,
void snd_midi_process_event(const struct snd_midi_op *ops,
struct snd_seq_event *ev,
struct snd_midi_channel_set *chanset);
void snd_midi_channel_set_clear(struct snd_midi_channel_set *chset);
struct snd_midi_channel_set *snd_midi_channel_alloc_set(int n);

37
sound/core/seq/seq_midi_emul.c
View File

@ -30,22 +30,25 @@ MODULE_DESCRIPTION("Advanced Linux Sound Architecture sequencer MIDI emulation."
MODULE_LICENSE("GPL");
/* Prototypes for static functions */
static void note_off(struct snd_midi_op *ops, void *drv,
static void note_off(const struct snd_midi_op *ops, void *drv,
struct snd_midi_channel *chan,
int note, int vel);
static void do_control(struct snd_midi_op *ops, void *private,
static void do_control(const struct snd_midi_op *ops, void *private,
struct snd_midi_channel_set *chset,
struct snd_midi_channel *chan,
int control, int value);
static void rpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
static void rpn(const struct snd_midi_op *ops, void *drv,
struct snd_midi_channel *chan,
struct snd_midi_channel_set *chset);
static void nrpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
static void nrpn(const struct snd_midi_op *ops, void *drv,
struct snd_midi_channel *chan,
struct snd_midi_channel_set *chset);
static void sysex(struct snd_midi_op *ops, void *private, unsigned char *sysex,
static void sysex(const struct snd_midi_op *ops, void *private,
unsigned char *sysex,
int len, struct snd_midi_channel_set *chset);
static void all_sounds_off(struct snd_midi_op *ops, void *private,
static void all_sounds_off(const struct snd_midi_op *ops, void *private,
struct snd_midi_channel *chan);
static void all_notes_off(struct snd_midi_op *ops, void *private,
static void all_notes_off(const struct snd_midi_op *ops, void *private,
struct snd_midi_channel *chan);
static void snd_midi_reset_controllers(struct snd_midi_channel *chan);
static void reset_all_channels(struct snd_midi_channel_set *chset);
@ -66,7 +69,7 @@ static void reset_all_channels(struct snd_midi_channel_set *chset);
* be interpreted.
*/
void
snd_midi_process_event(struct snd_midi_op *ops,
snd_midi_process_event(const struct snd_midi_op *ops,
struct snd_seq_event *ev,
struct snd_midi_channel_set *chanset)
{
@ -229,7 +232,8 @@ EXPORT_SYMBOL(snd_midi_process_event);
* release note
*/
static void
note_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
note_off(const struct snd_midi_op *ops, void *drv,
struct snd_midi_channel *chan,
int note, int vel)
{
if (chan->gm_hold) {
@ -251,7 +255,8 @@ note_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
* events that need to take place immediately to the driver.
*/
static void
do_control(struct snd_midi_op *ops, void *drv, struct snd_midi_channel_set *chset,
do_control(const struct snd_midi_op *ops, void *drv,
struct snd_midi_channel_set *chset,
struct snd_midi_channel *chan, int control, int value)
{
int i;
@ -402,7 +407,7 @@ EXPORT_SYMBOL(snd_midi_channel_set_clear);
* Process a rpn message.
*/
static void
rpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
rpn(const struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
struct snd_midi_channel_set *chset)
{
int type;
@ -442,7 +447,7 @@ rpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
* Process an nrpn message.
*/
static void
nrpn(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
nrpn(const struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan,
struct snd_midi_channel_set *chset)
{
/* parse XG NRPNs here if possible */
@ -470,7 +475,7 @@ get_channel(unsigned char cmd)
* Process a sysex message.
*/
static void
sysex(struct snd_midi_op *ops, void *private, unsigned char *buf, int len,
sysex(const struct snd_midi_op *ops, void *private, unsigned char *buf, int len,
struct snd_midi_channel_set *chset)
{
/* GM on */
@ -584,7 +589,8 @@ sysex(struct snd_midi_op *ops, void *private, unsigned char *buf, int len,
* all sound off
*/
static void
all_sounds_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan)
all_sounds_off(const struct snd_midi_op *ops, void *drv,
struct snd_midi_channel *chan)
{
int n;
@ -602,7 +608,8 @@ all_sounds_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan
* all notes off
*/
static void
all_notes_off(struct snd_midi_op *ops, void *drv, struct snd_midi_channel *chan)
all_notes_off(const struct snd_midi_op *ops, void *drv,
struct snd_midi_channel *chan)
{
int n;

2
sound/drivers/opl3/opl3_seq.c
View File

@ -128,7 +128,7 @@ static int snd_opl3_synth_unuse(void *private_data, struct snd_seq_port_subscrib
/*
* MIDI emulation operators
*/
struct snd_midi_op opl3_ops = {
const struct snd_midi_op opl3_ops = {
.note_on = snd_opl3_note_on,
.note_off = snd_opl3_note_off,
.key_press = snd_opl3_key_press,

2
sound/drivers/opl3/opl3_voice.h
View File

@ -41,6 +41,6 @@ void snd_opl3_free_seq_oss(struct snd_opl3 *opl3);
extern char snd_opl3_regmap[MAX_OPL2_VOICES][4];
extern bool use_internal_drums;
extern struct snd_midi_op opl3_ops;
extern const struct snd_midi_op opl3_ops;
#endif

2
sound/drivers/opl4/opl4_seq.c
View File

@ -100,7 +100,7 @@ static int snd_opl4_seq_unuse(void *private_data, struct snd_seq_port_subscribe
return 0;
}
static struct snd_midi_op opl4_ops = {
static const struct snd_midi_op opl4_ops = {
.note_on = snd_opl4_note_on,
.note_off = snd_opl4_note_off,
.note_terminate = snd_opl4_terminate_note,

2
sound/synth/emux/emux_seq.c
View File

@ -19,7 +19,7 @@ static int snd_emux_unuse(void *private_data, struct snd_seq_port_subscribe *inf
/*
* MIDI emulation operators
*/
static struct snd_midi_op emux_ops = {
static const struct snd_midi_op emux_ops = {
.note_on = snd_emux_note_on,
.note_off = snd_emux_note_off,
.key_press = snd_emux_key_press,