4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
34 #include <polyp/polyplib.h>
35 #include <polyp/polyplib-error.h>
36 #include <polyp/mainloop.h>
37 #include <polyp/mainloop-signal.h>
39 static enum { RECORD
, PLAYBACK
} mode
= PLAYBACK
;
41 static struct pa_context
*context
= NULL
;
42 static struct pa_stream
*stream
= NULL
;
43 static struct pa_mainloop_api
*mainloop_api
= NULL
;
45 static void *buffer
= NULL
;
46 static size_t buffer_length
= 0, buffer_index
= 0;
48 static struct pa_io_event
* stdio_event
= NULL
;
50 /* A shortcut for terminating the application */
51 static void quit(int ret
) {
53 mainloop_api
->quit(mainloop_api
, ret
);
56 /* Write some data to the stream */
57 static void do_stream_write(size_t length
) {
61 if (!buffer
|| !buffer_length
)
65 if (l
> buffer_length
)
68 pa_stream_write(stream
, (uint8_t*) buffer
+ buffer_index
, l
, NULL
, 0);
75 buffer_index
= buffer_length
= 0;
79 /* This is called whenever new data may be written to the stream */
80 static void stream_write_callback(struct pa_stream
*s
, size_t length
, void *userdata
) {
84 mainloop_api
->io_enable(stdio_event
, PA_IO_EVENT_INPUT
);
89 do_stream_write(length
);
92 /* This is called whenever new data may is available */
93 static void stream_read_callback(struct pa_stream
*s
, const void*data
, size_t length
, void *userdata
) {
94 assert(s
&& data
&& length
);
97 mainloop_api
->io_enable(stdio_event
, PA_IO_EVENT_OUTPUT
);
100 fprintf(stderr
, "Buffer overrrun, dropping incoming data\n");
104 buffer
= malloc(buffer_length
= length
);
106 memcpy(buffer
, data
, length
);
110 /* This routine is called whenever the stream state changes */
111 static void stream_state_callback(struct pa_stream
*s
, void *userdata
) {
114 switch (pa_stream_get_state(s
)) {
115 case PA_STREAM_CREATING
:
116 case PA_STREAM_TERMINATED
:
119 case PA_STREAM_READY
:
120 fprintf(stderr
, "Stream successfully created\n");
123 case PA_STREAM_FAILED
:
125 fprintf(stderr
, "Stream errror: %s\n", pa_strerror(pa_context_errno(pa_stream_get_context(s
))));
130 /* This is called whenever the context status changes */
131 static void context_state_callback(struct pa_context
*c
, void *userdata
) {
132 static const struct pa_sample_spec ss
= {
133 .format
= PA_SAMPLE_S16LE
,
140 switch (pa_context_get_state(c
)) {
141 case PA_CONTEXT_CONNECTING
:
142 case PA_CONTEXT_AUTHORIZING
:
143 case PA_CONTEXT_SETTING_NAME
:
146 case PA_CONTEXT_READY
:
148 assert(c
&& !stream
);
149 fprintf(stderr
, "Connection established.\n");
151 stream
= pa_stream_new(c
, "pacat", &ss
);
154 pa_stream_set_state_callback(stream
, stream_state_callback
, NULL
);
155 pa_stream_set_write_callback(stream
, stream_write_callback
, NULL
);
156 pa_stream_set_read_callback(stream
, stream_read_callback
, NULL
);
158 if (mode
== PLAYBACK
)
159 pa_stream_connect_playback(stream
, NULL
, NULL
);
161 pa_stream_connect_record(stream
, NULL
, NULL
);
165 case PA_CONTEXT_TERMINATED
:
169 case PA_CONTEXT_FAILED
:
171 fprintf(stderr
, "Connection failure: %s\n", pa_strerror(pa_context_errno(c
)));
176 /* Connection draining complete */
177 static void context_drain_complete(struct pa_context
*c
, void *userdata
) {
178 pa_context_disconnect(c
);
181 /* Stream draining complete */
182 static void stream_drain_complete(struct pa_stream
*s
, int success
, void *userdata
) {
183 struct pa_operation
*o
;
186 fprintf(stderr
, "Failed to drain stream: %s\n", pa_strerror(pa_context_errno(context
)));
190 fprintf(stderr
, "Playback stream drained.\n");
192 pa_stream_disconnect(stream
);
193 pa_stream_unref(stream
);
196 if (!(o
= pa_context_drain(context
, context_drain_complete
, NULL
)))
197 pa_context_disconnect(context
);
199 pa_operation_unref(o
);
200 fprintf(stderr
, "Draining connection to server.\n");
204 /* New data on STDIN **/
205 static void stdin_callback(struct pa_mainloop_api
*a
, struct pa_io_event
*e
, int fd
, enum pa_io_event_flags f
, void *userdata
) {
208 assert(a
== mainloop_api
&& e
&& stdio_event
== e
);
211 mainloop_api
->io_enable(stdio_event
, PA_IO_EVENT_NULL
);
215 if (!stream
|| pa_stream_get_state(stream
) != PA_STREAM_READY
|| !(l
= w
= pa_stream_writable_size(stream
)))
220 if ((r
= read(fd
, buffer
, l
)) <= 0) {
222 fprintf(stderr
, "Got EOF.\n");
223 pa_operation_unref(pa_stream_drain(stream
, stream_drain_complete
, NULL
));
225 fprintf(stderr
, "read() failed: %s\n", strerror(errno
));
229 mainloop_api
->io_free(stdio_event
);
241 /* Some data may be written to STDOUT */
242 static void stdout_callback(struct pa_mainloop_api
*a
, struct pa_io_event
*e
, int fd
, enum pa_io_event_flags f
, void *userdata
) {
244 assert(a
== mainloop_api
&& e
&& stdio_event
== e
);
247 mainloop_api
->io_enable(stdio_event
, PA_IO_EVENT_NULL
);
251 assert(buffer_length
);
253 if ((r
= write(fd
, (uint8_t*) buffer
+buffer_index
, buffer_length
)) <= 0) {
254 fprintf(stderr
, "write() failed: %s\n", strerror(errno
));
257 mainloop_api
->io_free(stdio_event
);
265 if (!buffer_length
) {
268 buffer_length
= buffer_index
= 0;
272 /* UNIX signal to quit recieved */
273 static void exit_signal_callback(struct pa_mainloop_api
*m
, struct pa_signal_event
*e
, int sig
, void *userdata
) {
274 fprintf(stderr
, "Got SIGINT, exiting.\n");
279 /* Show the current playback latency */
280 static void stream_get_latency_callback(struct pa_stream
*s
, const struct pa_latency_info
*i
, void *userdata
) {
284 fprintf(stderr
, "Failed to get latency: %s\n", strerror(errno
));
289 fprintf(stderr
, "Current latency is %u usecs.\n", i
->buffer_usec
+i
->sink_usec
);
292 /* Someone requested that the latency is shown */
293 static void sigusr1_signal_callback(struct pa_mainloop_api
*m
, struct pa_signal_event
*e
, int sig
, void *userdata
) {
294 if (mode
!= PLAYBACK
)
297 fprintf(stderr
, "Got SIGUSR1, requesting latency.\n");
298 pa_operation_unref(pa_stream_get_latency(stream
, stream_get_latency_callback
, NULL
));
301 int main(int argc
, char *argv
[]) {
302 struct pa_mainloop
* m
= NULL
;
306 if (!(bn
= strrchr(argv
[0], '/')))
311 if (strstr(bn
, "rec") || strstr(bn
, "mon"))
313 else if (strstr(bn
, "cat") || strstr(bn
, "play"))
316 fprintf(stderr
, "Opening a %s stream.\n", mode
== RECORD
? "recording" : "playback");
318 /* Set up a new main loop */
319 if (!(m
= pa_mainloop_new())) {
320 fprintf(stderr
, "pa_mainloop_new() failed.\n");
324 mainloop_api
= pa_mainloop_get_api(m
);
326 r
= pa_signal_init(mainloop_api
);
328 pa_signal_new(SIGINT
, exit_signal_callback
, NULL
);
329 pa_signal_new(SIGUSR1
, sigusr1_signal_callback
, NULL
);
330 signal(SIGPIPE
, SIG_IGN
);
332 if (!(stdio_event
= mainloop_api
->io_new(mainloop_api
,
333 mode
== PLAYBACK
? STDIN_FILENO
: STDOUT_FILENO
,
334 mode
== PLAYBACK
? PA_IO_EVENT_INPUT
: PA_IO_EVENT_OUTPUT
,
335 mode
== PLAYBACK
? stdin_callback
: stdout_callback
, NULL
))) {
336 fprintf(stderr
, "source_io() failed.\n");
340 /* Create a new connection context */
341 if (!(context
= pa_context_new(mainloop_api
, bn
))) {
342 fprintf(stderr
, "pa_context_new() failed.\n");
346 pa_context_set_state_callback(context
, context_state_callback
, NULL
);
348 /* Connect the context */
349 pa_context_connect_spawn(context
, NULL
);
351 /* Run the main loop */
352 if (pa_mainloop_run(m
, &ret
) < 0) {
353 fprintf(stderr
, "pa_mainloop_run() failed.\n");
359 pa_stream_unref(stream
);
362 pa_context_unref(context
);
365 assert(mainloop_api
);
366 mainloop_api
->io_free(stdio_event
);