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amidi: Fix device list

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From: Matthias Koenig <mk@phasorlab.de>

amidi does not show all devices with the --list-devices option.
It assumes that all output ports equals input ports and does not
show an input only port.
This patch extends the output of amidi -l by one column which shows
the input/output direction of each port.
E.g.

zebra:amidi # ./amidi -l
Dir Device    Name
IO  hw:1,0    MPU-401 MIDI 1-0
IO  hw:2,0,0  Keystation MIDI 1
IO  hw:3,0,0  Miditerminal 1
IO  hw:3,0,1  Miditerminal 2
IO  hw:3,0,2  Miditerminal 3
IO  hw:3,0,3  Miditerminal 4
I   hw:3,0,4  Miditerminal SMPTE
This commit is contained in:
Takashi Iwai 2006-06-23 14:53:38 +02:00
parent 8a852de04b
commit 6764ddbd53
1 changed files with 86 additions and 23 deletions
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107
amidi/amidi.c
View file

@ -95,57 +95,120 @@ static void *my_malloc(size_t size)
return p;
}
static int is_input(snd_ctl_t *ctl, int card, int device, int sub)
{
snd_rawmidi_info_t *info;
int err;
snd_rawmidi_info_alloca(&info);
snd_rawmidi_info_set_device(info, device);
snd_rawmidi_info_set_subdevice(info, sub);
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_INPUT);
if ((err = snd_ctl_rawmidi_info(ctl, info)) < 0 && err != -ENXIO)
return err;
else if (err == 0)
return 1;
return 0;
}
static int is_output(snd_ctl_t *ctl, int card, int device, int sub)
{
snd_rawmidi_info_t *info;
int err;
snd_rawmidi_info_alloca(&info);
snd_rawmidi_info_set_device(info, device);
snd_rawmidi_info_set_subdevice(info, sub);
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_OUTPUT);
if ((err = snd_ctl_rawmidi_info(ctl, info)) < 0 && err != -ENXIO)
return err;
else if (err == 0)
return 1;
return 0;
}
static void list_device(snd_ctl_t *ctl, int card, int device)
{
snd_rawmidi_info_t *info;
const char *name;
const char *sub_name;
int subs;
int subs, subs_in, subs_out;
int sub, in, out;
int err;
snd_rawmidi_info_alloca(&info);
snd_rawmidi_info_set_device(info, device);
snd_rawmidi_info_set_subdevice(info, 0);
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_OUTPUT);
if ((err = snd_ctl_rawmidi_info(ctl, info)) < 0 &&
err != -ENOENT) {
error("cannot get rawmidi information %d:%d: %s",
card, device, snd_strerror(err));
return;
}
if (err == -ENOENT) {
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_INPUT);
if ((err = snd_ctl_rawmidi_info(ctl, info)) < 0 &&
err != -ENOENT) {
snd_ctl_rawmidi_info(ctl, info);
subs_in = snd_rawmidi_info_get_subdevices_count(info);
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_OUTPUT);
snd_ctl_rawmidi_info(ctl, info);
subs_out = snd_rawmidi_info_get_subdevices_count(info);
subs = subs_in > subs_out ? subs_in : subs_out;
sub = 0;
in = out = 0;
if ((err = is_output(ctl, card, device, sub)) < 0) {
error("cannot get rawmidi information %d:%d: %s",
card, device, snd_strerror(err));
return;
} else if (err)
out = 1;
if (err == 0) {
if ((err = is_input(ctl, card, device, sub)) < 0) {
error("cannot get rawmidi information %d:%d: %s",
card, device, snd_strerror(err));
return;
}
}
if (err == -ENOENT)
} else if (err)
in = 1;
if (err == 0)
return;
name = snd_rawmidi_info_get_name(info);
sub_name = snd_rawmidi_info_get_subdevice_name(info);
subs = snd_rawmidi_info_get_subdevices_count(info);
if (sub_name[0] == '\0') {
if (subs == 1)
printf("hw:%d,%d %s\n", card, device, name);
else
printf("hw:%d,%d %s (%d subdevices)\n",
if (subs == 1) {
printf("%c%c hw:%d,%d %s\n",
in ? 'I' : ' ', out ? 'O' : ' ',
card, device, name);
} else
printf(" hw:%d,%d %s (%d subdevices)\n",
card, device, name, subs);
} else {
int sub = 0;
sub = 0;
for (;;) {
printf("hw:%d,%d,%d %s\n",
printf("%c%c hw:%d,%d,%d %s\n",
in ? 'I' : ' ', out ? 'O' : ' ',
card, device, sub, sub_name);
if (++sub >= subs)
break;
in = is_input(ctl, card, device, sub);
out = is_output(ctl, card, device, sub);
snd_rawmidi_info_set_subdevice(info, sub);
if (out) {
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_OUTPUT);
if ((err = snd_ctl_rawmidi_info(ctl, info)) < 0) {
error("cannot get rawmidi information %d:%d:%d: %s",
card, device, sub, snd_strerror(err));
break;
}
} else {
snd_rawmidi_info_set_stream(info, SND_RAWMIDI_STREAM_INPUT);
if ((err = snd_ctl_rawmidi_info(ctl, info)) < 0) {
error("cannot get rawmidi information %d:%d:%d: %s",
card, device, sub, snd_strerror(err));
break;
}
}
sub_name = snd_rawmidi_info_get_subdevice_name(info);
}
}
@ -189,7 +252,7 @@ static void device_list(void)
error("no sound card found");
return;
}
puts("Device Name");
puts("Dir Device Name");
do {
list_card_devices(card);
if ((err = snd_card_next(&card)) < 0) {