The branch main has been updated by christos: URL: https://cgit.FreeBSD.org/src/commit/?id=e4b31985b54b626b2bbf486a82dd789f3dd381db
commit e4b31985b54b626b2bbf486a82dd789f3dd381db Author: Christos Margiolis <[email protected]> AuthorDate: 2025-11-13 12:10:04 +0000 Commit: Christos Margiolis <[email protected]> CommitDate: 2025-11-13 12:10:04 +0000 sound: Remove dead midi code Sponsored by: The FreeBSD Foundation MFC after: 1 week --- sys/dev/sound/midi/midi.c | 137 +++++----------------------------------------- 1 file changed, 14 insertions(+), 123 deletions(-) diff --git a/sys/dev/sound/midi/midi.c b/sys/dev/sound/midi/midi.c index eed7ce89a919..b39288675ea6 100644 --- a/sys/dev/sound/midi/midi.c +++ b/sys/dev/sound/midi/midi.c @@ -62,12 +62,6 @@ #include <dev/sound/midi/midiq.h> MALLOC_DEFINE(M_MIDI, "midi buffers", "Midi data allocation area"); -#define MIDI_DEV_MIDICTL 12 - -enum midi_states { - MIDI_IN_START, MIDI_IN_SYSEX, MIDI_IN_DATA -}; - #define MIDI_NAMELEN 16 struct snd_midi { KOBJ_FIELDS; @@ -86,12 +80,6 @@ struct snd_midi { struct selinfo rsel, wsel; int hiwat; /* QLEN(outq)>High-water -> disable * writes from userland */ - enum midi_states inq_state; - int inq_status, inq_left; /* Variables for the state machine in - * Midi_in, this is to provide that - * signals only get issued only - * complete command packets. */ - struct proc *async; struct cdev *dev; TAILQ_ENTRY(snd_midi) link; }; @@ -326,10 +314,8 @@ static int midi_lengths[] = {2, 2, 2, 2, 1, 1, 2, 0}; int midi_in(struct snd_midi *m, uint8_t *buf, int size) { - /* int i, sig, enq; */ int used; - /* uint8_t data; */ MIDI_DEBUG(5, printf("midi_in: m=%p size=%d\n", m, size)); /* @@ -341,111 +327,22 @@ midi_in(struct snd_midi *m, uint8_t *buf, int size) used = 0; mtx_lock(&m->qlock); -#if 0 - /* - * Don't bother queuing if not in read mode. Discard everything and - * return size so the caller doesn't freak out. - */ - - if (!(m->flags & M_RX)) - return size; - - for (i = sig = 0; i < size; i++) { - data = buf[i]; - enq = 0; - if (data == MIDI_ACK) - continue; - - switch (m->inq_state) { - case MIDI_IN_START: - if (MIDI_IS_STATUS(data)) { - switch (data) { - case 0xf0: /* Sysex */ - m->inq_state = MIDI_IN_SYSEX; - break; - case 0xf1: /* MTC quarter frame */ - case 0xf3: /* Song select */ - m->inq_state = MIDI_IN_DATA; - enq = 1; - m->inq_left = 1; - break; - case 0xf2: /* Song position pointer */ - m->inq_state = MIDI_IN_DATA; - enq = 1; - m->inq_left = 2; - break; - default: - if (MIDI_IS_COMMON(data)) { - enq = 1; - sig = 1; - } else { - m->inq_state = MIDI_IN_DATA; - enq = 1; - m->inq_status = data; - m->inq_left = MIDI_LENGTH(data); - } - break; - } - } else if (MIDI_IS_STATUS(m->inq_status)) { - m->inq_state = MIDI_IN_DATA; - if (!MIDIQ_FULL(m->inq)) { - used++; - MIDIQ_ENQ(m->inq, &m->inq_status, 1); - } - enq = 1; - m->inq_left = MIDI_LENGTH(m->inq_status) - 1; - } - break; - /* - * End of case MIDI_IN_START: - */ - - case MIDI_IN_DATA: - enq = 1; - if (--m->inq_left <= 0) - sig = 1;/* deliver data */ - break; - case MIDI_IN_SYSEX: - if (data == MIDI_SYSEX_END) - m->inq_state = MIDI_IN_START; - break; - } - - if (enq) - if (!MIDIQ_FULL(m->inq)) { - MIDIQ_ENQ(m->inq, &data, 1); - used++; - } - /* - * End of the state machines main "for loop" - */ + MIDI_DEBUG(6, printf("midi_in: len %jd avail %jd\n", + (intmax_t)MIDIQ_LEN(m->inq), + (intmax_t)MIDIQ_AVAIL(m->inq))); + if (MIDIQ_AVAIL(m->inq) > size) { + used = size; + MIDIQ_ENQ(m->inq, buf, size); + } else { + MIDI_DEBUG(4, printf("midi_in: Discarding data qu\n")); + mtx_unlock(&m->qlock); + return 0; } - if (sig) { -#endif - MIDI_DEBUG(6, printf("midi_in: len %jd avail %jd\n", - (intmax_t)MIDIQ_LEN(m->inq), - (intmax_t)MIDIQ_AVAIL(m->inq))); - if (MIDIQ_AVAIL(m->inq) > size) { - used = size; - MIDIQ_ENQ(m->inq, buf, size); - } else { - MIDI_DEBUG(4, printf("midi_in: Discarding data qu\n")); - mtx_unlock(&m->qlock); - return 0; - } - if (m->rchan) { - wakeup(&m->rchan); - m->rchan = 0; - } - selwakeup(&m->rsel); - if (m->async) { - PROC_LOCK(m->async); - kern_psignal(m->async, SIGIO); - PROC_UNLOCK(m->async); - } -#if 0 + if (m->rchan) { + wakeup(&m->rchan); + m->rchan = 0; } -#endif + selwakeup(&m->rsel); mtx_unlock(&m->qlock); return used; } @@ -480,11 +377,6 @@ midi_out(struct snd_midi *m, uint8_t *buf, int size) m->wchan = 0; } selwakeup(&m->wsel); - if (m->async) { - PROC_LOCK(m->async); - kern_psignal(m->async, SIGIO); - PROC_UNLOCK(m->async); - } } mtx_unlock(&m->qlock); return used; @@ -526,7 +418,6 @@ midi_open(struct cdev *i_dev, int flags, int mode, struct thread *td) m->rchan = 0; m->wchan = 0; - m->async = 0; if (flags & FREAD) { m->flags |= M_RX | M_RXEN;
