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Added snd_midi_event_no_status()

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This commit is contained in:
Jaroslav Kysela 2002-04-19 17:34:57 +00:00
parent fb07cd28e5
commit f063381430
2 changed files with 37 additions and 15 deletions
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1
include/seq_midi_event.h
View file

@ -48,6 +48,7 @@ void snd_midi_event_free(snd_midi_event_t *dev);
void snd_midi_event_init(snd_midi_event_t *dev);
void snd_midi_event_reset_encode(snd_midi_event_t *dev);
void snd_midi_event_reset_decode(snd_midi_event_t *dev);
void snd_midi_event_no_status(snd_midi_event_t *dev, int on);
/* encode from byte stream - return number of written bytes if success */
long snd_midi_event_encode(snd_midi_event_t *dev, unsigned char *buf, long count, snd_seq_event_t *ev);
int snd_midi_event_encode_byte(snd_midi_event_t *dev, int c, snd_seq_event_t *ev);

51
src/seq/seq_midi_event.c
View file

@ -39,6 +39,7 @@ struct snd_midi_event {
size_t read; /* chars read */
int type; /* current event type */
unsigned char lastcmd;
unsigned char nostat;
size_t bufsize;
unsigned char *buf; /* input buffer */
};
@ -171,6 +172,11 @@ void snd_midi_event_free(snd_midi_event_t *dev)
}
}
void snd_midi_event_no_status(snd_midi_event_t *dev, int on)
{
dev->nostat = on ? 1 : 0;
}
/*
* initialize record
*/
@ -436,7 +442,7 @@ long snd_midi_event_decode(snd_midi_event_t *dev, unsigned char *buf, long count
} else {
unsigned char xbuf[4];
if ((cmd & 0xf0) == 0xf0 || dev->lastcmd != cmd) {
if ((cmd & 0xf0) == 0xf0 || dev->lastcmd != cmd || dev->nostat) {
dev->lastcmd = cmd;
xbuf[0] = cmd;
if (status_event[type].decode)
@ -493,23 +499,38 @@ static void songpos_decode(snd_seq_event_t *ev, unsigned char *buf)
/* decode 14bit control */
static int extra_decode_ctrl14(snd_midi_event_t *dev, unsigned char *buf, int count, snd_seq_event_t *ev)
{
unsigned char cmd;
int idx = 0;
if (ev->data.control.param < 32) {
if (count < 5)
if (count < 4)
return -ENOMEM;
buf[0] = MIDI_CMD_CONTROL|(ev->data.control.channel & 0x0f);
buf[1] = ev->data.control.param;
buf[2] = (ev->data.control.value >> 7) & 0x7f;
buf[3] = ev->data.control.param + 32;
buf[4] = ev->data.control.value & 0x7f;
dev->lastcmd = buf[0];
return 5;
if (dev->nostat && count < 6)
return -ENOMEM;
cmd = MIDI_CMD_CONTROL|(ev->data.control.channel & 0x0f);
if (cmd != dev->lastcmd || dev->nostat) {
if (count < 5)
return -ENOMEM;
buf[idx++] = dev->lastcmd = cmd;
}
buf[idx++] = ev->data.control.param;
buf[idx++] = (ev->data.control.value >> 7) & 0x7f;
if (dev->nostat)
buf[idx++] = cmd;
buf[idx++] = ev->data.control.param + 32;
buf[idx++] = ev->data.control.value & 0x7f;
return idx;
} else {
if (count < 3)
if (count < 2)
return -ENOMEM;
buf[0] = MIDI_CMD_CONTROL|(ev->data.control.channel & 0x0f);
buf[1] = ev->data.control.param & 0x7f;
buf[4] = ev->data.control.value & 0x7f;
dev->lastcmd = buf[0];
return 3;
cmd = MIDI_CMD_CONTROL|(ev->data.control.channel & 0x0f);
if (cmd != dev->lastcmd || dev->nostat) {
if (count < 3)
return -ENOMEM;
buf[idx++] = dev->lastcmd = cmd;
}
buf[idx++] = ev->data.control.param & 0x7f;
buf[idx++] = ev->data.control.value & 0x7f;
return idx;
}
}