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amidi: open devices non-blockingly

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Open the RawMIDI devices in non-blocking mode so that we do not hang
while a device is busy.
This commit is contained in:
Clemens Ladisch 2007-04-17 09:25:01 +02:00
parent 3f17db2ef5
commit 2d470cf9c1
1 changed files with 10 additions and 6 deletions
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12
amidi/amidi.c
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@ -584,7 +584,7 @@ int main(int argc, char *argv[])
else
outputp = NULL;
if ((err = snd_rawmidi_open(inputp, outputp, port_name, 0)) < 0) {
if ((err = snd_rawmidi_open(inputp, outputp, port_name, SND_RAWMIDI_NONBLOCK)) < 0) {
error("cannot open port \"%s\": %s", port_name, snd_strerror(err));
goto _exit2;
}
@ -592,11 +592,16 @@ int main(int argc, char *argv[])
if (inputp)
snd_rawmidi_read(input, NULL, 0); /* trigger reading */
if (send_data &&
((err = snd_rawmidi_write(output, send_data, send_data_length))) < 0) {
if (send_data) {
if ((err = snd_rawmidi_nonblock(output, 0)) < 0) {
error("cannot set blocking mode: %s", snd_strerror(err));
goto _exit;
}
if ((err = snd_rawmidi_write(output, send_data, send_data_length)) < 0) {
error("cannot send data: %s", snd_strerror(err));
goto _exit;
}
}
if (inputp) {
int read = 0;
@ -604,7 +609,6 @@ int main(int argc, char *argv[])
struct pollfd *pfds;
timeout *= 1000;
snd_rawmidi_nonblock(input, 1);
npfds = snd_rawmidi_poll_descriptors_count(input);
pfds = alloca(npfds * sizeof(struct pollfd));
snd_rawmidi_poll_descriptors(input, pfds, npfds);