]> git.alsa-project.org Git - alsa-utils.git/commitdiff
move event dumping from arecordmidi to aseqdump
authorClemens Ladisch <clemens@ladisch.de>
Mon, 21 Feb 2005 08:30:12 +0000 (08:30 +0000)
committerClemens Ladisch <clemens@ladisch.de>
Mon, 21 Feb 2005 08:30:12 +0000 (08:30 +0000)
Remove the event dumping functionality from arecordmidi and
put it into the new aseqdump utility.

configure.in
seq/Makefile.am
seq/aplaymidi/arecordmidi.1
seq/aplaymidi/arecordmidi.c
seq/aseqdump/Makefile.am [new file with mode: 0644]
seq/aseqdump/aseqdump.1 [new file with mode: 0644]
seq/aseqdump/aseqdump.c [new file with mode: 0644]

index ae1f8ac683619b19784e636728b0e286334732bb..fe7f7499ba82a354b97edbde151bcf36f99aa681 100644 (file)
@@ -89,5 +89,5 @@ AC_OUTPUT(Makefile alsactl/Makefile alsamixer/Makefile amidi/Makefile amixer/Mak
          alsaconf/po/Makefile \
          aplay/Makefile include/Makefile iecset/Makefile utils/Makefile \
          utils/alsa-utils.spec seq/Makefile seq/aconnect/Makefile \
-         seq/aplaymidi/Makefile seq/aseqnet/Makefile \
+         seq/aplaymidi/Makefile seq/aseqdump/Makefile seq/aseqnet/Makefile \
          speaker-test/Makefile)
index ac32cc08e7c005e59f9e8a681a92bd9497968b49..2c84ceeab4d61834bf94724ff05a071bff2a7c49 100644 (file)
@@ -1 +1 @@
-SUBDIRS=aconnect aplaymidi aseqnet
+SUBDIRS=aconnect aplaymidi aseqdump aseqnet
index 56a08d17685ae699484b199cd827359429040724..cfe6eede356d5386893499d9dcb624ca05ac6b3b 100644 (file)
@@ -58,10 +58,6 @@ The default value is 384 ticks/beat or 40 ticks/frame, respectively.
 Specifies that the data for each MIDI channel should be written to a
 separate track in the MIDI file.
 
-.TP
-.I \-d,\-\-dump
-Shows the events received as text on standard output.
-
 .TP
 .I \-m,\-\-metronome=client:port
 Plays a metronome signal on the specified sequencer port.
index 506a45f79645cddeaebdae8ee0679cd92271e057..c8e2865de01c477c17079ced11bb60cb854836ba 100644 (file)
@@ -1,7 +1,7 @@
 /*
  * arecordmidi.c - record standard MIDI files from sequencer ports
  *
- * Copyright (c) 2004 Clemens Ladisch <clemens@ladisch.de>
+ * Copyright (c) 2004-2005 Clemens Ladisch <clemens@ladisch.de>
  *
  *
  *  This program is free software; you can redistribute it and/or modify
@@ -75,7 +75,6 @@ static int channel_split;
 static int num_tracks;
 static struct smf_track *tracks;
 static volatile sig_atomic_t stop = 0;
-static int dump = 0;
 static int use_metronome = 0;
 static snd_seq_addr_t metronome_port;
 static int metronome_weak_note = METRONOME_WEAK_NOTE;
@@ -189,92 +188,6 @@ static void time_signature(const char *arg)
                ++ts_dd;
 }
 
-/*
- * Dump incoming events
- */
-static void print_syx(unsigned int len, unsigned char *data)
-{
-       unsigned int i;
-
-       for (i = 0; i < len; ++i) {
-               printf(" %02x", data[i]);
-       }
-       printf("\n");
-}
-
-static void print_time(snd_seq_event_t *ev)
-{
-       printf("%11d ", ev->time.tick);
-}
-
-static void print_midi_event(snd_seq_event_t *ev)
-{
-       switch (ev->type) {
-       case SND_SEQ_EVENT_NOTEON:
-               print_time(ev);
-               printf("Note on                %2d %3d %3d\n",
-                      ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
-               break;
-       case SND_SEQ_EVENT_NOTEOFF:
-               print_time(ev);
-               printf("Note off               %2d %3d %3d\n",
-                      ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
-               break;
-       case SND_SEQ_EVENT_KEYPRESS:
-               print_time(ev);
-               printf("Polyphonic aftertouch  %2d %3d %3d\n",
-                      ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
-               break;
-       case SND_SEQ_EVENT_CONTROLLER:
-               print_time(ev);
-               printf("Control change         %2d %3d %3d\n",
-                      ev->data.control.channel, ev->data.control.param, ev->data.control.value);
-               break;
-       case SND_SEQ_EVENT_PGMCHANGE:
-               print_time(ev);
-               printf("Program change         %2d %3d\n",
-                      ev->data.control.channel, ev->data.control.value);
-               break;
-       case SND_SEQ_EVENT_CHANPRESS:
-               print_time(ev);
-               printf("Channel aftertouch     %2d %3d\n",
-                      ev->data.control.channel, ev->data.control.value);
-               break;
-       case SND_SEQ_EVENT_PITCHBEND:
-               print_time(ev);
-               printf("Pitch bend             %2d  %6d\n",
-                      ev->data.control.channel, ev->data.control.value);
-               break;
-       case SND_SEQ_EVENT_CONTROL14:
-               print_time(ev);
-               printf("Control change         %2d %3d %5d\n",
-                      ev->data.control.channel, ev->data.control.param, ev->data.control.value);
-               break;
-       case SND_SEQ_EVENT_NONREGPARAM:
-               print_time(ev);
-               printf("Non-reg. parameter     %2d %5d %5d\n",
-                      ev->data.control.channel, ev->data.control.param, ev->data.control.value);
-               break;
-       case SND_SEQ_EVENT_REGPARAM:
-               print_time(ev);
-               printf("Reg. parameter         %2d %5d %5d\n",
-                      ev->data.control.channel, ev->data.control.param, ev->data.control.value);
-               break;
-       case SND_SEQ_EVENT_SENSING:
-               print_time(ev);
-               printf("Active Sensing\n");
-               break;
-       case SND_SEQ_EVENT_SYSEX:
-               print_time(ev);
-               printf("System exclusive      ");
-               print_syx(ev->data.ext.len, ev->data.ext.ptr);
-               break;
-       default:
-               print_time(ev);
-               printf("Event type %d\n",  ev->type);
-       }
-}
-
 /*
  * Metronome implementation
  */
@@ -772,7 +685,6 @@ static void help(const char *argv0)
                "  -f,--fps=frames            resolution in frames per second (SMPTE)\n"
                "  -t,--ticks=ticks           resolution in ticks per beat or frame\n"
                "  -s,--split-channels        create a track for each channel\n"
-               "  -d,--dump                  dump events on standard output\n"
                "  -m,--metronome=client:port play a metronome signal\n"
                "  -i,--timesig=nn:dd         time signature\n",
                argv0);
@@ -851,7 +763,7 @@ int main(int argc, char *argv[])
                        channel_split = 1;
                        break;
                case 'd':
-                       dump = 1;
+                       fputs("The --dump option isn't supported anymore, use aseqdump instead.\n", stderr);
                        break;
                case 'm':
                        init_metronome(optarg);
@@ -929,11 +841,6 @@ int main(int argc, char *argv[])
        err = snd_seq_nonblock(seq, 1);
        check_snd("set nonblock mode", err);
        
-       if (dump) {
-               printf("Waiting for data. Press Ctrl+C to end\n");
-               printf("_______Tick Event_________________ Ch _Data__\n");
-       }
-       
        if (use_metronome) {
                metronome_set_program();
                metronome_pattern(0);
@@ -955,8 +862,6 @@ int main(int argc, char *argv[])
                                break;
                        if (event)
                                record_event(event);
-                       if (dump && event->dest.port < port_count)
-                               print_midi_event(event);
                } while (err > 0);
                if (stop)
                        break;
diff --git a/seq/aseqdump/Makefile.am b/seq/aseqdump/Makefile.am
new file mode 100644 (file)
index 0000000..d918d9f
--- /dev/null
@@ -0,0 +1,5 @@
+INCLUDES = -I$(top_srcdir)/include
+EXTRA_DIST = aseqdump.1
+
+bin_PROGRAMS = aseqdump
+man_MANS = aseqdump.1
diff --git a/seq/aseqdump/aseqdump.1 b/seq/aseqdump/aseqdump.1
new file mode 100644 (file)
index 0000000..f6f2aa9
--- /dev/null
@@ -0,0 +1,39 @@
+.TH ASEQDUMP 1 "19 Feb 2005"
+
+.SH NAME
+aseqdump \- show the events received at an ALSA sequencer port
+
+.SH SYNOPSIS
+.B aseqdump
+[\fI\-p client:port,...\fP]
+
+.SH DESCRIPTION
+.B aseqdump
+is a command-line utility that prints the sequencer events it receives as text.
+
+To stop receiving, press Ctrl+C.
+
+.SH OPTIONS
+
+.TP
+.I \-h,\-\-help
+Prints a list of options.
+
+.TP
+.I \-V,\-\-version
+Prints the current version.
+
+.TP
+.I \-l,\-\-list
+Prints a list of possible input ports.
+
+.TP
+.I \-p,\-\-port=client:port,...
+Sets the sequencer port(s) from which events are received.
+
+A client can be specified by its number, its name, or a prefix of its
+name.  A port is specified by its number; for port 0 of a client, the
+":0" part of the port specification can be omitted.
+
+.SH AUTHOR
+Clemens Ladisch <clemens@ladisch.de>
diff --git a/seq/aseqdump/aseqdump.c b/seq/aseqdump/aseqdump.c
new file mode 100644 (file)
index 0000000..528eaa1
--- /dev/null
@@ -0,0 +1,434 @@
+/*
+ * aseqdump.c - show the events received at an ALSA sequencer port
+ *
+ * Copyright (c) 2005 Clemens Ladisch <clemens@ladisch.de>
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <signal.h>
+#include <getopt.h>
+#include <sys/poll.h>
+#include <alsa/asoundlib.h>
+#include "aconfig.h"
+#include "version.h"
+
+static snd_seq_t *seq;
+static int port_count;
+static snd_seq_addr_t *ports;
+static volatile sig_atomic_t stop = 0;
+
+
+/* prints an error message to stderr, and dies */
+static void fatal(const char *msg, ...)
+{
+       va_list ap;
+
+       va_start(ap, msg);
+       vfprintf(stderr, msg, ap);
+       va_end(ap);
+       fputc('\n', stderr);
+       exit(EXIT_FAILURE);
+}
+
+/* memory allocation error handling */
+static void check_mem(void *p)
+{
+       if (!p)
+               fatal("Out of memory");
+}
+
+/* error handling for ALSA functions */
+static void check_snd(const char *operation, int err)
+{
+       if (err < 0)
+               fatal("Cannot %s - %s", operation, snd_strerror(err));
+}
+
+static void init_seq(void)
+{
+       int err;
+
+       /* open sequencer */
+       err = snd_seq_open(&seq, "default", SND_SEQ_OPEN_DUPLEX, 0);
+       check_snd("open sequencer", err);
+
+       /* set our client's name */
+       err = snd_seq_set_client_name(seq, "aseqdump");
+       check_snd("set client name", err);
+}
+
+/* parses one or more port addresses from the string */
+static void parse_ports(const char *arg)
+{
+       char *buf, *s, *port_name;
+       int err;
+
+       /* make a copy of the string because we're going to modify it */
+       buf = strdup(arg);
+       check_mem(buf);
+
+       for (port_name = s = buf; s; port_name = s + 1) {
+               /* Assume that ports are separated by commas.  We don't use
+                * spaces because those are valid in client names. */
+               s = strchr(port_name, ',');
+               if (s)
+                       *s = '\0';
+
+               ++port_count;
+               ports = realloc(ports, port_count * sizeof(snd_seq_addr_t));
+               check_mem(ports);
+
+               err = snd_seq_parse_address(seq, &ports[port_count - 1], port_name);
+               if (err < 0)
+                       fatal("Invalid port %s - %s", port_name, snd_strerror(err));
+       }
+
+       free(buf);
+}
+
+static void create_port(void)
+{
+       int err;
+
+       err = snd_seq_create_simple_port(seq, "aseqdump",
+                                        SND_SEQ_PORT_CAP_WRITE |
+                                        SND_SEQ_PORT_CAP_SUBS_WRITE,
+                                        SND_SEQ_PORT_TYPE_MIDI_GENERIC |
+                                        SND_SEQ_PORT_TYPE_APPLICATION);
+       check_snd("create port", err);
+}
+
+static void connect_ports(void)
+{
+       int i, err;
+
+       for (i = 0; i < port_count; ++i) {
+               err = snd_seq_connect_from(seq, 0, ports[i].client, ports[i].port);
+               if (err < 0)
+                       fatal("Cannot connect from port %d:%d - %s",
+                             ports[i].client, ports[i].port, snd_strerror(err));
+       }
+}
+
+static void dump_event(const snd_seq_event_t *ev)
+{
+       printf("%3d:%-3d ", ev->source.client, ev->source.port);
+       switch (ev->type) {
+       case SND_SEQ_EVENT_NOTEON:
+               printf("Note on                %2d %3d %3d\n",
+                      ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
+               break;
+       case SND_SEQ_EVENT_NOTEOFF:
+               printf("Note off               %2d %3d %3d\n",
+                      ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
+               break;
+       case SND_SEQ_EVENT_KEYPRESS:
+               printf("Polyphonic aftertouch  %2d %3d %3d\n",
+                      ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
+               break;
+       case SND_SEQ_EVENT_CONTROLLER:
+               printf("Control change         %2d %3d %3d\n",
+                      ev->data.control.channel, ev->data.control.param, ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_PGMCHANGE:
+               printf("Program change         %2d %3d\n",
+                      ev->data.control.channel, ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_CHANPRESS:
+               printf("Channel aftertouch     %2d %3d\n",
+                      ev->data.control.channel, ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_PITCHBEND:
+               printf("Pitch bend             %2d  %6d\n",
+                      ev->data.control.channel, ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_CONTROL14:
+               printf("Control change         %2d %3d %5d\n",
+                      ev->data.control.channel, ev->data.control.param, ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_NONREGPARAM:
+               printf("Non-reg. parameter     %2d %5d %5d\n",
+                      ev->data.control.channel, ev->data.control.param, ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_REGPARAM:
+               printf("Reg. parameter         %2d %5d %5d\n",
+                      ev->data.control.channel, ev->data.control.param, ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_SONGPOS:
+               printf("Song position pointer     %5d\n",
+                      ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_SONGSEL:
+               printf("Song select               %3d\n",
+                      ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_QFRAME:
+               printf("MTC quarter frame         %02xh\n",
+                      ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_TIMESIGN:
+               // XXX how is this encoded?
+               printf("SMF time signature        (%#08x)\n",
+                      ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_KEYSIGN:
+               // XXX how is this encoded?
+               printf("SMF key signature         (%#08x)\n",
+                      ev->data.control.value);
+               break;
+       case SND_SEQ_EVENT_START:
+               if (ev->source.client == SND_SEQ_CLIENT_SYSTEM &&
+                   ev->source.port == SND_SEQ_PORT_SYSTEM_TIMER)
+                       printf("Queue start               %d\n",
+                              ev->data.queue.queue);
+               else
+                       printf("Start\n");
+               break;
+       case SND_SEQ_EVENT_CONTINUE:
+               if (ev->source.client == SND_SEQ_CLIENT_SYSTEM &&
+                   ev->source.port == SND_SEQ_PORT_SYSTEM_TIMER)
+                       printf("Queue continue            %d\n",
+                              ev->data.queue.queue);
+               else
+                       printf("Continue\n");
+               break;
+       case SND_SEQ_EVENT_STOP:
+               if (ev->source.client == SND_SEQ_CLIENT_SYSTEM &&
+                   ev->source.port == SND_SEQ_PORT_SYSTEM_TIMER)
+                       printf("Queue stop                %d\n",
+                              ev->data.queue.queue);
+               else
+                       printf("Stop\n");
+               break;
+       case SND_SEQ_EVENT_SETPOS_TICK:
+               printf("Set tick queue pos.       %d\n", ev->data.queue.queue);
+               break;
+       case SND_SEQ_EVENT_SETPOS_TIME:
+               printf("Set rt queue pos.         %d\n", ev->data.queue.queue);
+               break;
+       case SND_SEQ_EVENT_TEMPO:
+               printf("Set queue tempo           %d\n", ev->data.queue.queue);
+               break;
+       case SND_SEQ_EVENT_CLOCK:
+               printf("Clock\n");
+               break;
+       case SND_SEQ_EVENT_TICK:
+               printf("Tick\n");
+               break;
+       case SND_SEQ_EVENT_QUEUE_SKEW:
+               printf("Queue timer skew          %d\n", ev->data.queue.queue);
+               break;
+       case SND_SEQ_EVENT_TUNE_REQUEST:
+               /* something's fishy here ... */
+               printf("Tuna request\n");
+               break;
+       case SND_SEQ_EVENT_RESET:
+               printf("Reset\n");
+               break;
+       case SND_SEQ_EVENT_SENSING:
+               printf("Active Sensing\n");
+               break;
+       case SND_SEQ_EVENT_CLIENT_START:
+               printf("Client start              %d\n",
+                      ev->data.addr.client);
+               break;
+       case SND_SEQ_EVENT_CLIENT_EXIT:
+               printf("Client exit               %d\n",
+                      ev->data.addr.client);
+               break;
+       case SND_SEQ_EVENT_CLIENT_CHANGE:
+               printf("Client changed            %d\n",
+                      ev->data.addr.client);
+               break;
+       case SND_SEQ_EVENT_PORT_START:
+               printf("Port start                %d:%d\n",
+                      ev->data.addr.client, ev->data.addr.port);
+               break;
+       case SND_SEQ_EVENT_PORT_EXIT:
+               printf("Port exit                 %d:%d\n",
+                      ev->data.addr.client, ev->data.addr.port);
+               break;
+       case SND_SEQ_EVENT_PORT_CHANGE:
+               printf("Port changed              %d:%d\n",
+                      ev->data.addr.client, ev->data.addr.port);
+               break;
+       case SND_SEQ_EVENT_PORT_SUBSCRIBED:
+               printf("Port subscribed           %d:%d -> %d:%d\n",
+                      ev->data.connect.sender.client, ev->data.connect.sender.port,
+                      ev->data.connect.dest.client, ev->data.connect.dest.port);
+               break;
+       case SND_SEQ_EVENT_PORT_UNSUBSCRIBED:
+               printf("Port unsubscribed         %d:%d -> %d:%d\n",
+                      ev->data.connect.sender.client, ev->data.connect.sender.port,
+                      ev->data.connect.dest.client, ev->data.connect.dest.port);
+               break;
+       case SND_SEQ_EVENT_SYSEX:
+               {
+                       unsigned int i;
+                       printf("System exclusive         ");
+                       for (i = 0; i < ev->data.ext.len; ++i)
+                               printf(" %02X", ((unsigned char*)ev->data.ext.ptr)[i]);
+                       printf("\n");
+               }
+               break;
+       default:
+               printf("Event type %d\n",  ev->type);
+       }
+}
+
+static void list_ports(void)
+{
+       snd_seq_client_info_t *cinfo;
+       snd_seq_port_info_t *pinfo;
+
+       snd_seq_client_info_alloca(&cinfo);
+       snd_seq_port_info_alloca(&pinfo);
+
+       puts(" Port    Client name                      Port name");
+
+       snd_seq_client_info_set_client(cinfo, -1);
+       while (snd_seq_query_next_client(seq, cinfo) >= 0) {
+               int client = snd_seq_client_info_get_client(cinfo);
+
+               snd_seq_port_info_set_client(pinfo, client);
+               snd_seq_port_info_set_port(pinfo, -1);
+               while (snd_seq_query_next_port(seq, pinfo) >= 0) {
+                       /* we need both READ and SUBS_READ */
+                       if ((snd_seq_port_info_get_capability(pinfo)
+                            & (SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ))
+                           != (SND_SEQ_PORT_CAP_READ | SND_SEQ_PORT_CAP_SUBS_READ))
+                               continue;
+                       printf("%3d:%-3d  %-32.32s %s\n",
+                              snd_seq_port_info_get_client(pinfo),
+                              snd_seq_port_info_get_port(pinfo),
+                              snd_seq_client_info_get_name(cinfo),
+                              snd_seq_port_info_get_name(pinfo));
+               }
+       }
+}
+
+static void help(const char *argv0)
+{
+       fprintf(stderr, "Usage: %s [options]\n"
+               "\nAvailable options:\n"
+               "  -h,--help                  this help\n"
+               "  -V,--version               show version\n"
+               "  -l,--list                  list input ports\n"
+               "  -p,--port=client:port,...  source port(s)\n",
+               argv0);
+}
+
+static void version(void)
+{
+       fputs("aseqdump version " SND_UTIL_VERSION_STR "\n", stderr);
+}
+
+static void sighandler(int sig)
+{
+       stop = 1;
+}
+
+int main(int argc, char *argv[])
+{
+       static char short_options[] = "hVlp:";
+       static struct option long_options[] = {
+               {"help", 0, NULL, 'h'},
+               {"version", 0, NULL, 'V'},
+               {"list", 0, NULL, 'l'},
+               {"port", 1, NULL, 'p'},
+               { }
+       };
+
+       int do_list = 0;
+       struct pollfd *pfds;
+       int npfds;
+       int c, err;
+
+       init_seq();
+
+       while ((c = getopt_long(argc, argv, short_options,
+                               long_options, NULL)) != -1) {
+               switch (c) {
+               case 'h':
+                       help(argv[0]);
+                       return 0;
+               case 'V':
+                       version();
+                       return 0;
+               case 'l':
+                       do_list = 1;
+                       break;
+               case 'p':
+                       parse_ports(optarg);
+                       break;
+               default:
+                       help(argv[0]);
+                       return 1;
+               }
+       }
+       if (optind < argc) {
+               help(argv[0]);
+               return 1;
+       }
+
+       if (do_list) {
+               list_ports();
+               return 0;
+       }
+
+       create_port();
+       connect_ports();
+
+       err = snd_seq_nonblock(seq, 1);
+       check_snd("set nonblock mode", err);
+       
+       if (port_count > 0)
+               printf("Waiting for data.");
+       else
+               printf("Waiting for data at port %d:0.",
+                      snd_seq_client_id(seq));
+       printf(" Press Ctrl+C to end.\n");
+       printf("Source_ Event_________________ Ch _Data__\n");
+       
+       signal(SIGINT, sighandler);
+       signal(SIGTERM, sighandler);
+
+       npfds = snd_seq_poll_descriptors_count(seq, POLLIN);
+       pfds = alloca(sizeof(*pfds) * npfds);
+       for (;;) {
+               snd_seq_poll_descriptors(seq, pfds, npfds, POLLIN);
+               if (poll(pfds, npfds, 69) < 0)
+                       break;
+               do {
+                       snd_seq_event_t *event;
+                       err = snd_seq_event_input(seq, &event);
+                       if (err < 0)
+                               break;
+                       if (event)
+                               dump_event(event);
+               } while (err > 0);
+               if (stop)
+                       break;
+       }
+
+       snd_seq_close(seq);
+       return 0;
+}