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hdjd
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Seems to work with MP3e2 again

This commit is contained in:
Neale Pickett 2014-12-14 21:26:01 -07:00
parent 879aa06038
commit f5a8148993
3 changed files with 32 additions and 19 deletions
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36
alsa.c
View File

@ -73,9 +73,10 @@ alsa_fd_setup(int *nfds, fd_set *rfds, fd_set *wfds)
void
alsa_read_ready()
{
static snd_seq_event_t *ev;
snd_midi_event_init(midi_event_parser);
for (;;) {
snd_seq_event_t *ev;
unsigned char buf[ALSA_BUFSIZE];
long converted;
int r;
@ -83,19 +84,34 @@ alsa_read_ready()
r = snd_seq_event_input(snd_handle, &ev);
if (r == -EAGAIN) {
// input queue empty
break;
}
if (r == -ENOSPC) {
warn("Out of space on input queue");
} else if (r == -ENOSPC) {
warn("Input queue overflow");
continue;
} else if (r < 0) {
warn("snd_seq_event_input() = %d", r);
continue;
}
converted = snd_midi_event_decode(midi_event_parser, buf, ALSA_BUFSIZE, ev);
if (converted < 0) {
warn("Can't decode MIDI event type %d", ev->type);
} else {
DUMP_d(converted);
usb_write(buf, converted);
warn("Can't decode MIDI event type %x", ev->type);
continue;
}
if (converted < 3) {
int i;
warn("Uh oh, weird MIDI packet with length %ld (does this make sense if prefixed with 90?)", converted);
for (i = 0; i < converted; i += 1) {
fprintf(stderr, " %02x", buf[i]);
}
fprintf(stderr, "\n");
}
usb_write(buf, converted);
}
}
@ -119,6 +135,8 @@ alsa_write(uint8_t *data, size_t datalen)
{
size_t offset = 0;
snd_midi_event_init(midi_event_parser);
for (; datalen > offset;) {
snd_seq_event_t ev;
long encoded;

2
dump.h
View File

@ -9,7 +9,7 @@
#ifdef NODUMP
# define DUMPf(fmt, args...)
#else
# define DUMPf(fmt, args...) fprintf(stderr, "%s:%s:%d " fmt "\n", __FILE__, __FUNCTION__, __LINE__, ##args)
# define DUMPf(fmt, args...) fprintf(stderr, "%s:%d " fmt "\n", __FILE__, __LINE__, ##args)
#endif
#define DUMP() DUMPf("")
#define DUMP_d(v) DUMPf("%s = %d", #v, (int)v)

13
usb.c
View File

@ -156,7 +156,9 @@ usb_check_fds(fd_set *rfds, fd_set *wfds)
void
usb_write_done(struct libusb_transfer *xfer)
{
DUMP_d(xfer->status);
if (xfer->status) {
warn("USB Write status %d", xfer->status);
}
writes_pending -= 1;
free(xfer->buffer);
libusb_free_transfer(xfer);
@ -167,14 +169,7 @@ usb_write(uint8_t *data, size_t datalen)
{
struct libusb_transfer *xfer;
unsigned char *buf;
int i;
DUMP_d(datalen);
for (i = 0; i < datalen; i += 1) {
fprintf(stderr, " %02x", data[i]);
}
fprintf(stderr, "\n");
writes_pending += 1;
xfer = libusb_alloc_transfer(0);
buf = (unsigned char *)malloc(datalen);