This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
+ it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
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
+ You should have received a copy of the GNU Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
+#include <getopt.h>
-#include "polyplib.h"
-#include "polyplib-error.h"
-#include "mainloop.h"
-#include "mainloop-signal.h"
+#include <polyp/polyplib.h>
+#include <polyp/polyplib-error.h>
+#include <polyp/mainloop.h>
+#include <polyp/mainloop-signal.h>
+#include <polyp/polyplib-version.h>
+
+#if PA_API_VERSION != 6
+#error Invalid Polypaudio API version
+#endif
static enum { RECORD, PLAYBACK } mode = PLAYBACK;
static void *buffer = NULL;
static size_t buffer_length = 0, buffer_index = 0;
-static void* stdio_source = NULL;
+static struct pa_io_event* stdio_event = NULL;
+
+static char *stream_name = NULL, *client_name = NULL, *device = NULL;
+
+static int verbose = 0;
+static pa_volume_t volume = PA_VOLUME_NORM;
+
+static struct pa_sample_spec sample_spec = {
+ .format = PA_SAMPLE_S16LE,
+ .rate = 44100,
+ .channels = 2
+};
+/* 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);
- if (stdio_source)
- mainloop_api->enable_io(mainloop_api, stdio_source, PA_MAINLOOP_API_IO_EVENT_INPUT);
+ if (stdio_event)
+ mainloop_api->io_enable(stdio_event, PA_IO_EVENT_INPUT);
if (!buffer)
return;
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);
- if (stdio_source)
- mainloop_api->enable_io(mainloop_api, stdio_source, PA_MAINLOOP_API_IO_EVENT_OUTPUT);
+ if (stdio_event)
+ mainloop_api->io_enable(stdio_event, PA_IO_EVENT_OUTPUT);
if (buffer) {
- fprintf(stderr, "Buffer overrrun, dropping incoming data\n");
+ fprintf(stderr, "Buffer overrun, dropping incoming data\n");
return;
}
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:
+ if (verbose)
+ fprintf(stderr, "Stream successfully created\n");
+ break;
+
+ case PA_STREAM_FAILED:
+ default:
+ fprintf(stderr, "Stream error: %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) {
- 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;
- }
+/* This is called whenever the context status changes */
+static void context_state_callback(struct pa_context *c, void *userdata) {
+ 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);
+
+ if (verbose)
+ fprintf(stderr, "Connection established.\n");
+
+ stream = pa_stream_new(c, stream_name, &sample_spec);
+ 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, device, NULL, 0, volume);
+ else
+ pa_stream_connect_record(stream, device, NULL, 0);
+
+ 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) {
- fprintf(stderr, "Playback stream drained.\n");
+/* 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);
+ }
+
+ if (verbose)
+ 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
- fprintf(stderr, "Draining connection to server.\n");
+ if (!(o = pa_context_drain(context, context_drain_complete, NULL)))
+ pa_context_disconnect(context);
+ else {
+ pa_operation_unref(o);
+
+ if (verbose)
+ fprintf(stderr, "Draining connection to server.\n");
+ }
}
-static void stdin_callback(struct pa_mainloop_api*a, void *id, int fd, enum pa_mainloop_api_io_events events, void *userdata) {
+/* 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;
- assert(a == mainloop_api && id && stdio_source == id);
+ assert(a == mainloop_api && e && stdio_event == e);
if (buffer) {
- mainloop_api->enable_io(mainloop_api, stdio_source, PA_MAINLOOP_API_IO_EVENT_NULL);
+ mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
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);
assert(buffer);
if ((r = read(fd, buffer, l)) <= 0) {
if (r == 0) {
- fprintf(stderr, "Got EOF.\n");
- pa_stream_drain(stream, stream_drain_complete, NULL);
+ if (verbose)
+ fprintf(stderr, "Got EOF.\n");
+ pa_operation_unref(pa_stream_drain(stream, stream_drain_complete, NULL));
} else {
fprintf(stderr, "read() failed: %s\n", strerror(errno));
quit(1);
}
- mainloop_api->cancel_io(mainloop_api, stdio_source);
- stdio_source = NULL;
+ mainloop_api->io_free(stdio_event);
+ stdio_event = NULL;
return;
}
do_stream_write(w);
}
-static void stdout_callback(struct pa_mainloop_api*a, void *id, int fd, enum pa_mainloop_api_io_events events, void *userdata) {
+/* 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 && id && stdio_source == id);
+ assert(a == mainloop_api && e && stdio_event == e);
if (!buffer) {
- mainloop_api->enable_io(mainloop_api, stdio_source, PA_MAINLOOP_API_IO_EVENT_NULL);
+ mainloop_api->io_enable(stdio_event, PA_IO_EVENT_NULL);
return;
}
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);
- mainloop_api->cancel_io(mainloop_api, stdio_source);
- stdio_source = NULL;
+ mainloop_api->io_free(stdio_event);
+ stdio_event = NULL;
return;
}
}
}
-static void exit_signal_callback(void *id, int sig, void *userdata) {
- fprintf(stderr, "Got SIGINT, exiting.\n");
+/* UNIX signal to quit recieved */
+static void exit_signal_callback(struct pa_mainloop_api*m, struct pa_signal_event *e, int sig, void *userdata) {
+ if (verbose)
+ 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) {
+ pa_usec_t total;
+ int negative = 0;
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);
+ total = pa_stream_get_latency(s, i, &negative);
+
+ 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, (float) total * (negative?-1:1),
+ i->synchronized_clocks ? "yes" : "no");
}
-static void sigusr1_signal_callback(void *id, int sig, void *userdata) {
- if (mode == PLAYBACK) {
- fprintf(stderr, "Got SIGUSR1, requesting latency.\n");
- pa_stream_get_latency(stream, stream_get_latency_callback, NULL);
- }
+/* 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) {
+ fprintf(stderr, "Got SIGUSR1, requesting latency.\n");
+ pa_operation_unref(pa_stream_get_latency_info(stream, stream_get_latency_callback, NULL));
}
+
+static void help(const char *argv0) {
+
+ printf("%s [options]\n\n"
+ " -h, --help Show this help\n"
+ " --version Show version\n\n"
+ " -r, --record Create a connection for recording\n"
+ " -p, --playback Create a connection for playback\n\n"
+ " -v, --verbose Enable verbose operations\n\n"
+ " -s, --server=SERVER The name of the server to connect to\n"
+ " -d, --device=DEVICE The name of the sink/source to connect to\n"
+ " -n, --client-name=NAME How to call this client on the server\n"
+ " --stream-name=NAME How to call this stream on the server\n"
+ " --volume=VOLUME Specify the initial (linear) volume in range 0...256\n"
+ " --rate=SAMPLERATE The sample rate in Hz (defaults to 44100)\n"
+ " --format=SAMPLEFORMAT The sample type, one of s16le, s16be, u8, float32le,\n"
+ " float32be, ulaw, alaw (defaults to s16ne)\n"
+ " --channels=CHANNELS The number of channels, 1 for mono, 2 for stereo\n"
+ " (defaults to 2)\n",
+ argv0);
+}
+
+enum {
+ ARG_VERSION = 256,
+ ARG_STREAM_NAME,
+ ARG_VOLUME,
+ ARG_SAMPLERATE,
+ ARG_SAMPLEFORMAT,
+ ARG_CHANNELS
+};
+
int main(int argc, char *argv[]) {
struct pa_mainloop* m = NULL;
- int ret = 1, r;
- char *bn;
+ int ret = 1, r, c;
+ char *bn, *server = NULL;
+
+ static const struct option long_options[] = {
+ {"record", 0, NULL, 'r'},
+ {"playback", 0, NULL, 'p'},
+ {"device", 1, NULL, 'd'},
+ {"server", 1, NULL, 's'},
+ {"client-name", 1, NULL, 'n'},
+ {"stream-name", 1, NULL, ARG_STREAM_NAME},
+ {"version", 0, NULL, ARG_VERSION},
+ {"help", 0, NULL, 'h'},
+ {"verbose", 0, NULL, 'v'},
+ {"volume", 1, NULL, ARG_VOLUME},
+ {"rate", 1, NULL, ARG_SAMPLERATE},
+ {"format", 1, NULL, ARG_SAMPLEFORMAT},
+ {"channels", 1, NULL, ARG_CHANNELS},
+ {NULL, 0, NULL, 0}
+ };
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;
- fprintf(stderr, "Opening a %s stream.\n", mode == RECORD ? "recording" : "playback");
+ while ((c = getopt_long(argc, argv, "rpd:s:n:hv", long_options, NULL)) != -1) {
+
+ switch (c) {
+ case 'h' :
+ help(bn);
+ ret = 0;
+ goto quit;
+
+ case ARG_VERSION:
+ printf("pacat "PACKAGE_VERSION"\nCompiled with libpolyp %s\nLinked with libpolyp %s\n", pa_get_headers_version(), pa_get_library_version());
+ ret = 0;
+ goto quit;
+
+ case 'r':
+ mode = RECORD;
+ break;
+
+ case 'p':
+ mode = PLAYBACK;
+ break;
+
+ case 'd':
+ free(device);
+ device = strdup(optarg);
+ break;
+
+ case 's':
+ free(server);
+ server = strdup(optarg);
+ break;
+
+ case 'n':
+ free(client_name);
+ client_name = strdup(optarg);
+ break;
+
+ case ARG_STREAM_NAME:
+ free(stream_name);
+ stream_name = strdup(optarg);
+ break;
+
+ case 'v':
+ verbose = 1;
+ break;
+
+ case ARG_VOLUME: {
+ int v = atoi(optarg);
+ volume = v < 0 ? 0 : v;
+ break;
+ }
+
+ case ARG_CHANNELS:
+ sample_spec.channels = atoi(optarg);
+ break;
+
+ case ARG_SAMPLEFORMAT:
+ sample_spec.format = pa_parse_sample_format(optarg);
+ break;
+
+ case ARG_SAMPLERATE:
+ sample_spec.rate = atoi(optarg);
+ break;
+
+ default:
+ goto quit;
+ }
+ }
+
+ if (!client_name)
+ client_name = strdup(bn);
+
+ if (!stream_name)
+ stream_name = strdup(client_name);
+
+ if (!pa_sample_spec_valid(&sample_spec)) {
+ fprintf(stderr, "Invalid sample specification\n");
+ goto quit;
+ }
+ if (verbose) {
+ char t[PA_SAMPLE_SPEC_SNPRINT_MAX];
+ pa_sample_spec_snprint(t, sizeof(t), &sample_spec);
+ fprintf(stderr, "Opening a %s stream with sample specification '%s'.\n", mode == RECORD ? "recording" : "playback", t);
+ }
+
+ /* Set up a new main loop */
if (!(m = pa_mainloop_new())) {
fprintf(stderr, "pa_mainloop_new() failed.\n");
goto quit;
r = pa_signal_init(mainloop_api);
assert(r == 0);
- pa_signal_register(SIGINT, exit_signal_callback, NULL);
- pa_signal_register(SIGUSR1, sigusr1_signal_callback, NULL);
+ pa_signal_new(SIGINT, exit_signal_callback, NULL);
+ pa_signal_new(SIGUSR1, sigusr1_signal_callback, NULL);
signal(SIGPIPE, SIG_IGN);
- if (!(stdio_source = mainloop_api->source_io(mainloop_api,
- mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
- mode == PLAYBACK ? PA_MAINLOOP_API_IO_EVENT_INPUT : PA_MAINLOOP_API_IO_EVENT_OUTPUT,
- mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
+ if (!(stdio_event = mainloop_api->io_new(mainloop_api,
+ mode == PLAYBACK ? STDIN_FILENO : STDOUT_FILENO,
+ mode == PLAYBACK ? PA_IO_EVENT_INPUT : PA_IO_EVENT_OUTPUT,
+ mode == PLAYBACK ? stdin_callback : stdout_callback, NULL))) {
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, client_name))) {
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, server, 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);
+
+ free(buffer);
+
+ free(server);
+ free(device);
+ free(client_name);
+ free(stream_name);
return ret;
}