On Wed, 02 Mar 2016 19:26:27 +0100,
Martin Koegler wrote:
>
> From: Martin Koegler <martin.koegler@xxxxxxxxx>
>
> rawmidi devices expose the card number via IOCTLs, which allows to
> find the corresponding device in sysfs.
>
> The sequencer provides no identifing data. Chromium works around this
> issue by scanning rawmidi as well as sequencer devices and matching
> them by using assumtions, how the kernel register sequencer devices.
>
> This patch adds support for displaying the sound card number/PID to
> aconnect.
>
> Signed-off-by: Martin Koegler <martin.koegler@xxxxxxxxx>
This patch alone would break the build if alsa-utils is built against
the alsa-lib without your patch. So some check is needed.
Takashi
> ---
> seq/aconnect/aconnect.c | 13 ++++++++++++-
> 1 file changed, 12 insertions(+), 1 deletion(-)
>
> diff --git a/seq/aconnect/aconnect.c b/seq/aconnect/aconnect.c
> index 8d6cebb..d299f5c 100644
> --- a/seq/aconnect/aconnect.c
> +++ b/seq/aconnect/aconnect.c
> @@ -166,11 +166,22 @@ static void print_port(snd_seq_t *seq, snd_seq_client_info_t *cinfo,
> snd_seq_port_info_t *pinfo, int count)
> {
> if (! count) {
> - printf(_("client %d: '%s' [type=%s]\n"),
> + int card, pid;
> +
> + printf(_("client %d: '%s' [type=%s"),
> snd_seq_client_info_get_client(cinfo),
> snd_seq_client_info_get_name(cinfo),
> (snd_seq_client_info_get_type(cinfo) == SND_SEQ_USER_CLIENT ?
> _("user") : _("kernel")));
> +
> + card = snd_seq_client_info_get_card(cinfo);
> + if (card != -1)
> + printf(",card=%d", card);
> +
> + pid = snd_seq_client_info_get_pid(cinfo);
> + if (pid != -1)
> + printf(",pid=%d", pid);
> + printf("]\n");
> }
> printf(" %3d '%-16s'\n",
> snd_seq_port_info_get_port(pinfo),
> --
> 2.1.4
>
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