3 This file is part of PulseAudio.
5 Copyright 2004-2006 Lennart Poettering
7 PulseAudio is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Lesser General Public License as published
9 by the Free Software Foundation; either version 2 of the License,
10 or (at your option) any later version.
12 PulseAudio is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 General Public License for more details.
17 You should have received a copy of the GNU Lesser General Public License
18 along with PulseAudio; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include <pulse/pulseaudio.h>
32 #include <pulse/thread-mainloop.h>
33 #include <pulse/xmalloc.h>
35 #include <pulsecore/native-common.h>
36 #include <pulsecore/log.h>
37 #include <pulsecore/macro.h>
42 pa_threaded_mainloop *mainloop;
45 pa_stream_direction_t direction;
47 const void *read_data;
48 size_t read_index, read_length;
50 int operation_success;
53 #define CHECK_VALIDITY_RETURN_ANY(rerror, expression, error, ret) do { \
54 if (!(expression)) { \
61 #define CHECK_SUCCESS_GOTO(p, rerror, expression, label) do { \
62 if (!(expression)) { \
64 *(rerror) = pa_context_errno((p)->context); \
69 #define CHECK_DEAD_GOTO(p, rerror, label) do { \
70 if (!(p)->context || pa_context_get_state((p)->context) != PA_CONTEXT_READY || \
71 !(p)->stream || pa_stream_get_state((p)->stream) != PA_STREAM_READY) { \
72 if (((p)->context && pa_context_get_state((p)->context) == PA_CONTEXT_FAILED) || \
73 ((p)->stream && pa_stream_get_state((p)->stream) == PA_STREAM_FAILED)) { \
75 *(rerror) = pa_context_errno((p)->context); \
78 *(rerror) = PA_ERR_BADSTATE; \
83 static void context_state_cb(pa_context *c, void *userdata) {
84 pa_simple *p = userdata;
88 switch (pa_context_get_state(c)) {
89 case PA_CONTEXT_READY:
90 case PA_CONTEXT_TERMINATED:
91 case PA_CONTEXT_FAILED:
92 pa_threaded_mainloop_signal(p->mainloop, 0);
95 case PA_CONTEXT_UNCONNECTED:
96 case PA_CONTEXT_CONNECTING:
97 case PA_CONTEXT_AUTHORIZING:
98 case PA_CONTEXT_SETTING_NAME:
103 static void stream_state_cb(pa_stream *s, void * userdata) {
104 pa_simple *p = userdata;
108 switch (pa_stream_get_state(s)) {
110 case PA_STREAM_READY:
111 case PA_STREAM_FAILED:
112 case PA_STREAM_TERMINATED:
113 pa_threaded_mainloop_signal(p->mainloop, 0);
116 case PA_STREAM_UNCONNECTED:
117 case PA_STREAM_CREATING:
122 static void stream_request_cb(pa_stream *s, size_t length, void *userdata) {
123 pa_simple *p = userdata;
126 pa_threaded_mainloop_signal(p->mainloop, 0);
129 static void stream_latency_update_cb(pa_stream *s, void *userdata) {
130 pa_simple *p = userdata;
134 pa_threaded_mainloop_signal(p->mainloop, 0);
137 pa_simple* pa_simple_new(
140 pa_stream_direction_t dir,
142 const char *stream_name,
143 const pa_sample_spec *ss,
144 const pa_channel_map *map,
145 const pa_buffer_attr *attr,
149 int error = PA_ERR_INTERNAL, r;
151 CHECK_VALIDITY_RETURN_ANY(rerror, !server || *server, PA_ERR_INVALID, NULL);
152 CHECK_VALIDITY_RETURN_ANY(rerror, dir == PA_STREAM_PLAYBACK || dir == PA_STREAM_RECORD, PA_ERR_INVALID, NULL);
153 CHECK_VALIDITY_RETURN_ANY(rerror, !dev || *dev, PA_ERR_INVALID, NULL);
154 CHECK_VALIDITY_RETURN_ANY(rerror, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID, NULL);
155 CHECK_VALIDITY_RETURN_ANY(rerror, !map || (pa_channel_map_valid(map) && map->channels == ss->channels), PA_ERR_INVALID, NULL)
157 p = pa_xnew(pa_simple, 1);
162 p->read_index = p->read_length = 0;
164 if (!(p->mainloop = pa_threaded_mainloop_new()))
167 if (!(p->context = pa_context_new(pa_threaded_mainloop_get_api(p->mainloop), name)))
170 pa_context_set_state_callback(p->context, context_state_cb, p);
172 if (pa_context_connect(p->context, server, 0, NULL) < 0) {
173 error = pa_context_errno(p->context);
177 pa_threaded_mainloop_lock(p->mainloop);
179 if (pa_threaded_mainloop_start(p->mainloop) < 0)
180 goto unlock_and_fail;
182 /* Wait until the context is ready */
183 pa_threaded_mainloop_wait(p->mainloop);
185 if (pa_context_get_state(p->context) != PA_CONTEXT_READY) {
186 error = pa_context_errno(p->context);
187 goto unlock_and_fail;
190 if (!(p->stream = pa_stream_new(p->context, stream_name, ss, map))) {
191 error = pa_context_errno(p->context);
192 goto unlock_and_fail;
195 pa_stream_set_state_callback(p->stream, stream_state_cb, p);
196 pa_stream_set_read_callback(p->stream, stream_request_cb, p);
197 pa_stream_set_write_callback(p->stream, stream_request_cb, p);
198 pa_stream_set_latency_update_callback(p->stream, stream_latency_update_cb, p);
200 if (dir == PA_STREAM_PLAYBACK)
201 r = pa_stream_connect_playback(p->stream, dev, attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
203 r = pa_stream_connect_record(p->stream, dev, attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE);
206 error = pa_context_errno(p->context);
207 goto unlock_and_fail;
210 /* Wait until the stream is ready */
211 pa_threaded_mainloop_wait(p->mainloop);
213 /* Wait until the stream is ready */
214 if (pa_stream_get_state(p->stream) != PA_STREAM_READY) {
215 error = pa_context_errno(p->context);
216 goto unlock_and_fail;
219 pa_threaded_mainloop_unlock(p->mainloop);
224 pa_threaded_mainloop_unlock(p->mainloop);
233 void pa_simple_free(pa_simple *s) {
237 pa_threaded_mainloop_stop(s->mainloop);
240 pa_stream_unref(s->stream);
243 pa_context_unref(s->context);
246 pa_threaded_mainloop_free(s->mainloop);
251 int pa_simple_write(pa_simple *p, const void*data, size_t length, int *rerror) {
254 CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
255 CHECK_VALIDITY_RETURN_ANY(rerror, data && length, PA_ERR_INVALID, -1);
257 pa_threaded_mainloop_lock(p->mainloop);
259 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
265 while (!(l = pa_stream_writable_size(p->stream))) {
266 pa_threaded_mainloop_wait(p->mainloop);
267 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
270 CHECK_SUCCESS_GOTO(p, rerror, l != (size_t) -1, unlock_and_fail);
275 r = pa_stream_write(p->stream, data, l, NULL, 0LL, PA_SEEK_RELATIVE);
276 CHECK_SUCCESS_GOTO(p, rerror, r >= 0, unlock_and_fail);
278 data = (const uint8_t*) data + l;
282 pa_threaded_mainloop_unlock(p->mainloop);
286 pa_threaded_mainloop_unlock(p->mainloop);
290 int pa_simple_read(pa_simple *p, void*data, size_t length, int *rerror) {
293 CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE, -1);
294 CHECK_VALIDITY_RETURN_ANY(rerror, data && length, PA_ERR_INVALID, -1);
296 pa_threaded_mainloop_lock(p->mainloop);
298 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
303 while (!p->read_data) {
306 r = pa_stream_peek(p->stream, &p->read_data, &p->read_length);
307 CHECK_SUCCESS_GOTO(p, rerror, r == 0, unlock_and_fail);
310 pa_threaded_mainloop_wait(p->mainloop);
311 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
316 l = p->read_length < length ? p->read_length : length;
317 memcpy(data, (const uint8_t*) p->read_data+p->read_index, l);
319 data = (uint8_t*) data + l;
325 if (!p->read_length) {
328 r = pa_stream_drop(p->stream);
333 CHECK_SUCCESS_GOTO(p, rerror, r == 0, unlock_and_fail);
337 pa_threaded_mainloop_unlock(p->mainloop);
341 pa_threaded_mainloop_unlock(p->mainloop);
345 static void success_cb(pa_stream *s, int success, void *userdata) {
346 pa_simple *p = userdata;
351 p->operation_success = success;
352 pa_threaded_mainloop_signal(p->mainloop, 0);
355 int pa_simple_drain(pa_simple *p, int *rerror) {
356 pa_operation *o = NULL;
360 CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
362 pa_threaded_mainloop_lock(p->mainloop);
363 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
365 o = pa_stream_drain(p->stream, success_cb, p);
366 CHECK_SUCCESS_GOTO(p, rerror, o, unlock_and_fail);
368 p->operation_success = 0;
369 while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
370 pa_threaded_mainloop_wait(p->mainloop);
371 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
373 CHECK_SUCCESS_GOTO(p, rerror, p->operation_success, unlock_and_fail);
375 pa_operation_unref(o);
376 pa_threaded_mainloop_unlock(p->mainloop);
383 pa_operation_cancel(o);
384 pa_operation_unref(o);
387 pa_threaded_mainloop_unlock(p->mainloop);
391 int pa_simple_flush(pa_simple *p, int *rerror) {
392 pa_operation *o = NULL;
396 CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
398 pa_threaded_mainloop_lock(p->mainloop);
399 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
401 o = pa_stream_flush(p->stream, success_cb, p);
402 CHECK_SUCCESS_GOTO(p, rerror, o, unlock_and_fail);
404 p->operation_success = 0;
405 while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
406 pa_threaded_mainloop_wait(p->mainloop);
407 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
409 CHECK_SUCCESS_GOTO(p, rerror, p->operation_success, unlock_and_fail);
411 pa_operation_unref(o);
412 pa_threaded_mainloop_unlock(p->mainloop);
419 pa_operation_cancel(o);
420 pa_operation_unref(o);
423 pa_threaded_mainloop_unlock(p->mainloop);
427 pa_usec_t pa_simple_get_latency(pa_simple *p, int *rerror) {
433 pa_threaded_mainloop_lock(p->mainloop);
436 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
438 if (pa_stream_get_latency(p->stream, &t, &negative) >= 0)
441 CHECK_SUCCESS_GOTO(p, rerror, pa_context_errno(p->context) == PA_ERR_NODATA, unlock_and_fail);
443 /* Wait until latency data is available again */
444 pa_threaded_mainloop_wait(p->mainloop);
447 pa_threaded_mainloop_unlock(p->mainloop);
449 return negative ? 0 : t;
453 pa_threaded_mainloop_unlock(p->mainloop);
454 return (pa_usec_t) -1;