static struct pa_io_event* stdio_event = NULL;
+/* A shortcut for terminating the application */
static void quit(int ret) {
assert(mainloop_api);
mainloop_api->quit(mainloop_api, ret);
}
-static void context_die_callback(struct pa_context *c, void *userdata) {
- assert(c);
- fprintf(stderr, "Connection to server shut down, exiting.\n");
- quit(1);
-}
-
-static void stream_die_callback(struct pa_stream *s, void *userdata) {
- assert(s);
- fprintf(stderr, "Stream deleted, exiting.\n");
- quit(1);
-}
-
+/* Write some data to the stream */
static void do_stream_write(size_t length) {
size_t l;
assert(length);
if (l > buffer_length)
l = buffer_length;
- pa_stream_write(stream, buffer+buffer_index, l);
+ pa_stream_write(stream, (uint8_t*) buffer + buffer_index, l, NULL, 0);
buffer_length -= l;
buffer_index += l;
}
}
+/* This is called whenever new data may be written to the stream */
static void stream_write_callback(struct pa_stream *s, size_t length, void *userdata) {
assert(s && length);
do_stream_write(length);
}
+/* This is called whenever new data may is available */
static void stream_read_callback(struct pa_stream *s, const void*data, size_t length, void *userdata) {
assert(s && data && length);
buffer_index = 0;
}
-static void stream_complete_callback(struct pa_stream*s, int success, void *userdata) {
+/* This routine is called whenever the stream state changes */
+static void stream_state_callback(struct pa_stream *s, void *userdata) {
assert(s);
- if (!success) {
- fprintf(stderr, "Stream creation failed: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
- quit(1);
- return;
+ switch (pa_stream_get_state(s)) {
+ case PA_STREAM_CREATING:
+ case PA_STREAM_TERMINATED:
+ break;
+
+ case PA_STREAM_READY:
+ fprintf(stderr, "Stream successfully created\n");
+ break;
+
+ case PA_STREAM_FAILED:
+ default:
+ fprintf(stderr, "Stream errror: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s))));
+ quit(1);
}
-
- fprintf(stderr, "Stream created.\n");
}
-static void context_complete_callback(struct pa_context *c, int success, void *userdata) {
+/* This is called whenever the context status changes */
+static void context_state_callback(struct pa_context *c, void *userdata) {
static const struct pa_sample_spec ss = {
.format = PA_SAMPLE_S16LE,
.rate = 44100,
.channels = 2
};
-
- assert(c && !stream);
- if (!success) {
- fprintf(stderr, "Connection failed: %s\n", pa_strerror(pa_context_errno(c)));
- goto fail;
- }
+ assert(c);
- fprintf(stderr, "Connection established.\n");
-
- if (!(stream = pa_stream_new(c, mode == PLAYBACK ? PA_STREAM_PLAYBACK : PA_STREAM_RECORD, NULL, "pacat", &ss, NULL, stream_complete_callback, NULL))) {
- fprintf(stderr, "pa_stream_new() failed: %s\n", pa_strerror(pa_context_errno(c)));
- goto fail;
+ switch (pa_context_get_state(c)) {
+ case PA_CONTEXT_CONNECTING:
+ case PA_CONTEXT_AUTHORIZING:
+ case PA_CONTEXT_SETTING_NAME:
+ break;
+
+ case PA_CONTEXT_READY:
+
+ assert(c && !stream);
+ fprintf(stderr, "Connection established.\n");
+
+ stream = pa_stream_new(c, "pacat", &ss);
+ assert(stream);
+
+ pa_stream_set_state_callback(stream, stream_state_callback, NULL);
+ pa_stream_set_write_callback(stream, stream_write_callback, NULL);
+ pa_stream_set_read_callback(stream, stream_read_callback, NULL);
+
+ if (mode == PLAYBACK)
+ pa_stream_connect_playback(stream, NULL, NULL, PA_VOLUME_NORM);
+ else
+ pa_stream_connect_record(stream, NULL, NULL);
+
+ break;
+
+ case PA_CONTEXT_TERMINATED:
+ quit(0);
+ break;
+
+ case PA_CONTEXT_FAILED:
+ default:
+ fprintf(stderr, "Connection failure: %s\n", pa_strerror(pa_context_errno(c)));
+ quit(1);
}
-
- pa_stream_set_die_callback(stream, stream_die_callback, NULL);
- pa_stream_set_write_callback(stream, stream_write_callback, NULL);
- pa_stream_set_read_callback(stream, stream_read_callback, NULL);
-
- return;
-
-fail:
- quit(1);
}
+/* Connection draining complete */
static void context_drain_complete(struct pa_context*c, void *userdata) {
- quit(0);
+ pa_context_disconnect(c);
}
-static void stream_drain_complete(struct pa_stream*s, void *userdata) {
+/* Stream draining complete */
+static void stream_drain_complete(struct pa_stream*s, int success, void *userdata) {
+ struct pa_operation *o;
+
+ if (!success) {
+ fprintf(stderr, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context)));
+ quit(1);
+ }
+
fprintf(stderr, "Playback stream drained.\n");
- pa_stream_free(stream);
+ pa_stream_disconnect(stream);
+ pa_stream_unref(stream);
stream = NULL;
- if (pa_context_drain(context, context_drain_complete, NULL) < 0)
- quit(0);
- else
+ if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
+ pa_context_disconnect(context);
+ else {
+ pa_operation_unref(o);
fprintf(stderr, "Draining connection to server.\n");
+ }
}
+/* New data on STDIN **/
static void stdin_callback(struct pa_mainloop_api*a, struct pa_io_event *e, int fd, enum pa_io_event_flags f, void *userdata) {
size_t l, w = 0;
ssize_t r;
return;
}
- if (!stream || !pa_stream_is_ready(stream) || !(l = w = pa_stream_writable_size(stream)))
+ if (!stream || pa_stream_get_state(stream) != PA_STREAM_READY || !(l = w = pa_stream_writable_size(stream)))
l = 4096;
buffer = malloc(l);
if ((r = read(fd, buffer, l)) <= 0) {
if (r == 0) {
fprintf(stderr, "Got EOF.\n");
- pa_stream_drain(stream, stream_drain_complete, NULL);
+ pa_operation_unref(pa_stream_drain(stream, stream_drain_complete, NULL));
} else {
fprintf(stderr, "read() failed: %s\n", strerror(errno));
quit(1);
do_stream_write(w);
}
+/* Some data may be written to STDOUT */
static void stdout_callback(struct pa_mainloop_api*a, struct pa_io_event *e, int fd, enum pa_io_event_flags f, void *userdata) {
ssize_t r;
assert(a == mainloop_api && e && stdio_event == e);
assert(buffer_length);
- if ((r = write(fd, buffer+buffer_index, buffer_length)) <= 0) {
+ if ((r = write(fd, (uint8_t*) buffer+buffer_index, buffer_length)) <= 0) {
fprintf(stderr, "write() failed: %s\n", strerror(errno));
quit(1);
}
}
+/* UNIX signal to quit recieved */
static void exit_signal_callback(struct pa_mainloop_api*m, struct pa_signal_event *e, int sig, void *userdata) {
fprintf(stderr, "Got SIGINT, exiting.\n");
quit(0);
}
-static void stream_get_latency_callback(struct pa_stream *s, uint32_t latency, void *userdata) {
+/* Show the current latency */
+static void stream_get_latency_callback(struct pa_stream *s, const struct pa_latency_info *i, void *userdata) {
+ double total;
assert(s);
- if (latency == (uint32_t) -1) {
- fprintf(stderr, "Failed to get latency: %s\n", strerror(errno));
+ if (!i) {
+ fprintf(stderr, "Failed to get latency: %s\n", pa_strerror(pa_context_errno(context)));
quit(1);
return;
}
- fprintf(stderr, "Current latency is %u usecs.\n", latency);
+ if (mode == PLAYBACK)
+ total = (double) i->sink_usec + i->buffer_usec + i->transport_usec;
+ else
+ total = (double) i->source_usec + i->buffer_usec + i->transport_usec - i->sink_usec;
+
+ fprintf(stderr, "Latency: buffer: %0.0f usec; sink: %0.0f usec; source: %0.0f usec; transport: %0.0f usec; total: %0.0f usec; synchronized clocks: %s.\n",
+ (float) i->buffer_usec, (float) i->sink_usec, (float) i->source_usec, (float) i->transport_usec, total,
+ i->synchronized_clocks ? "yes" : "no");
}
+/* Someone requested that the latency is shown */
static void sigusr1_signal_callback(struct pa_mainloop_api*m, struct pa_signal_event *e, int sig, void *userdata) {
- if (mode == PLAYBACK) {
- fprintf(stderr, "Got SIGUSR1, requesting latency.\n");
- pa_stream_get_latency(stream, stream_get_latency_callback, NULL);
- }
+ fprintf(stderr, "Got SIGUSR1, requesting latency.\n");
+ pa_operation_unref(pa_stream_get_latency(stream, stream_get_latency_callback, NULL));
}
int main(int argc, char *argv[]) {
if (!(bn = strrchr(argv[0], '/')))
bn = argv[0];
+ else
+ bn++;
if (strstr(bn, "rec") || strstr(bn, "mon"))
mode = RECORD;
else if (strstr(bn, "cat") || strstr(bn, "play"))
mode = PLAYBACK;
+ if (argc >= 2) {
+ if (!strcmp(argv[1], "-r"))
+ mode = RECORD;
+ else if (!strcmp(argv[1], "-p"))
+ mode = PLAYBACK;
+ else {
+ fprintf(stderr, "Invalid argument\n");
+ goto quit;
+ }
+ }
+
fprintf(stderr, "Opening a %s stream.\n", mode == RECORD ? "recording" : "playback");
-
+
+ /* Set up a new main loop */
if (!(m = pa_mainloop_new())) {
fprintf(stderr, "pa_mainloop_new() failed.\n");
goto quit;
fprintf(stderr, "source_io() failed.\n");
goto quit;
}
-
- if (!(context = pa_context_new(mainloop_api, argv[0]))) {
+
+ /* Create a new connection context */
+ if (!(context = pa_context_new(mainloop_api, bn))) {
fprintf(stderr, "pa_context_new() failed.\n");
goto quit;
}
- if (pa_context_connect(context, NULL, context_complete_callback, NULL) < 0) {
- fprintf(stderr, "pa_context_connext() failed.\n");
- goto quit;
- }
-
- pa_context_set_die_callback(context, context_die_callback, NULL);
+ pa_context_set_state_callback(context, context_state_callback, NULL);
+
+ /* Connect the context */
+ pa_context_connect(context, NULL, 1, NULL);
+ /* Run the main loop */
if (pa_mainloop_run(m, &ret) < 0) {
fprintf(stderr, "pa_mainloop_run() failed.\n");
goto quit;
quit:
if (stream)
- pa_stream_free(stream);
+ pa_stream_unref(stream);
+
if (context)
- pa_context_free(context);
+ pa_context_unref(context);
+ if (stdio_event) {
+ assert(mainloop_api);
+ mainloop_api->io_free(stdio_event);
+ }
+
if (m) {
pa_signal_done();
pa_mainloop_free(m);
}
-
+
if (buffer)
free(buffer);