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Diffstat (limited to 'seq/aseqdump/aseqdump.c')
-rw-r--r--seq/aseqdump/aseqdump.c438
1 files changed, 438 insertions, 0 deletions
diff --git a/seq/aseqdump/aseqdump.c b/seq/aseqdump/aseqdump.c
new file mode 100644
index 0000000..24c5d21
--- /dev/null
+++ b/seq/aseqdump/aseqdump.c
@@ -0,0 +1,438 @@
+/*
+ * 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:
+ if (ev->data.note.velocity)
+ printf("Note on %2d, note %d, velocity %d\n",
+ ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
+ else
+ printf("Note off %2d, note %d\n",
+ ev->data.note.channel, ev->data.note.note);
+ break;
+ case SND_SEQ_EVENT_NOTEOFF:
+ printf("Note off %2d, note %d, velocity %d\n",
+ ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
+ break;
+ case SND_SEQ_EVENT_KEYPRESS:
+ printf("Polyphonic aftertouch %2d, note %d, value %d\n",
+ ev->data.note.channel, ev->data.note.note, ev->data.note.velocity);
+ break;
+ case SND_SEQ_EVENT_CONTROLLER:
+ printf("Control change %2d, controller %d, value %d\n",
+ ev->data.control.channel, ev->data.control.param, ev->data.control.value);
+ break;
+ case SND_SEQ_EVENT_PGMCHANGE:
+ printf("Program change %2d, program %d\n",
+ ev->data.control.channel, ev->data.control.value);
+ break;
+ case SND_SEQ_EVENT_CHANPRESS:
+ printf("Channel aftertouch %2d, value %d\n",
+ ev->data.control.channel, ev->data.control.value);
+ break;
+ case SND_SEQ_EVENT_PITCHBEND:
+ printf("Pitch bend %2d, value %d\n",
+ ev->data.control.channel, ev->data.control.value);
+ break;
+ case SND_SEQ_EVENT_CONTROL14:
+ printf("Control change %2d, controller %d, value %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, parameter %d, value %d\n",
+ ev->data.control.channel, ev->data.control.param, ev->data.control.value);
+ break;
+ case SND_SEQ_EVENT_REGPARAM:
+ printf("Reg. parameter %2d, parameter %d, value %d\n",
+ ev->data.control.channel, ev->data.control.param, ev->data.control.value);
+ break;
+ case SND_SEQ_EVENT_SONGPOS:
+ printf("Song position pointer value %d\n",
+ ev->data.control.value);
+ break;
+ case SND_SEQ_EVENT_SONGSEL:
+ printf("Song select value %d\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 (%#010x)\n",
+ ev->data.control.value);
+ break;
+ case SND_SEQ_EVENT_KEYSIGN:
+ // XXX how is this encoded?
+ printf("SMF key signature (%#010x)\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 queue %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 queue %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 queue %d\n",
+ ev->data.queue.queue);
+ else
+ printf("Stop\n");
+ break;
+ case SND_SEQ_EVENT_SETPOS_TICK:
+ printf("Set tick queue pos. queue %d\n", ev->data.queue.queue);
+ break;
+ case SND_SEQ_EVENT_SETPOS_TIME:
+ printf("Set rt queue pos. queue %d\n", ev->data.queue.queue);
+ break;
+ case SND_SEQ_EVENT_TEMPO:
+ printf("Set queue tempo queue %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 queue %d\n", ev->data.queue.queue);
+ break;
+ case SND_SEQ_EVENT_TUNE_REQUEST:
+ printf("Tune 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 client %d\n",
+ ev->data.addr.client);
+ break;
+ case SND_SEQ_EVENT_CLIENT_EXIT:
+ printf("Client exit client %d\n",
+ ev->data.addr.client);
+ break;
+ case SND_SEQ_EVENT_CLIENT_CHANGE:
+ printf("Client changed client %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)
+{
+ printf("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)
+{
+ puts("aseqdump version " SND_UTIL_VERSION_STR);
+}
+
+static void sighandler(int sig)
+{
+ stop = 1;
+}
+
+int main(int argc, char *argv[])
+{
+ static const char short_options[] = "hVlp:";
+ static const 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, -1) < 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);
+ fflush(stdout);
+ if (stop)
+ break;
+ }
+
+ snd_seq_close(seq);
+ return 0;
+}
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