4 This file is part of PulseAudio.
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser 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 PulseAudio 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 Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 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>
41 pa_threaded_mainloop *mainloop;
44 pa_stream_direction_t direction;
46 const void *read_data;
47 size_t read_index, read_length;
49 int operation_success;
52 #define CHECK_VALIDITY_RETURN_ANY(rerror, expression, error, ret) do { \
53 if (!(expression)) { \
60 #define CHECK_SUCCESS_GOTO(p, rerror, expression, label) do { \
61 if (!(expression)) { \
63 *(rerror) = pa_context_errno((p)->context); \
68 #define CHECK_DEAD_GOTO(p, rerror, label) do { \
69 if (!(p)->context || pa_context_get_state((p)->context) != PA_CONTEXT_READY || \
70 !(p)->stream || pa_stream_get_state((p)->stream) != PA_STREAM_READY) { \
71 if (((p)->context && pa_context_get_state((p)->context) == PA_CONTEXT_FAILED) || \
72 ((p)->stream && pa_stream_get_state((p)->stream) == PA_STREAM_FAILED)) { \
74 *(rerror) = pa_context_errno((p)->context); \
77 *(rerror) = PA_ERR_BADSTATE; \
82 static void context_state_cb(pa_context *c, void *userdata) {
83 pa_simple *p = userdata;
87 switch (pa_context_get_state(c)) {
88 case PA_CONTEXT_READY:
89 case PA_CONTEXT_TERMINATED:
90 case PA_CONTEXT_FAILED:
91 pa_threaded_mainloop_signal(p->mainloop, 0);
94 case PA_CONTEXT_UNCONNECTED:
95 case PA_CONTEXT_CONNECTING:
96 case PA_CONTEXT_AUTHORIZING:
97 case PA_CONTEXT_SETTING_NAME:
102 static void stream_state_cb(pa_stream *s, void * userdata) {
103 pa_simple *p = userdata;
107 switch (pa_stream_get_state(s)) {
109 case PA_STREAM_READY:
110 case PA_STREAM_FAILED:
111 case PA_STREAM_TERMINATED:
112 pa_threaded_mainloop_signal(p->mainloop, 0);
115 case PA_STREAM_UNCONNECTED:
116 case PA_STREAM_CREATING:
121 static void stream_request_cb(pa_stream *s, size_t length, void *userdata) {
122 pa_simple *p = userdata;
125 pa_threaded_mainloop_signal(p->mainloop, 0);
128 static void stream_latency_update_cb(pa_stream *s, void *userdata) {
129 pa_simple *p = userdata;
133 pa_threaded_mainloop_signal(p->mainloop, 0);
136 pa_simple* pa_simple_new(
139 pa_stream_direction_t dir,
141 const char *stream_name,
142 const pa_sample_spec *ss,
143 const pa_channel_map *map,
144 const pa_buffer_attr *attr,
148 int error = PA_ERR_INTERNAL, r;
150 CHECK_VALIDITY_RETURN_ANY(rerror, !server || *server, PA_ERR_INVALID, NULL);
151 CHECK_VALIDITY_RETURN_ANY(rerror, dir == PA_STREAM_PLAYBACK || dir == PA_STREAM_RECORD, PA_ERR_INVALID, NULL);
152 CHECK_VALIDITY_RETURN_ANY(rerror, !dev || *dev, PA_ERR_INVALID, NULL);
153 CHECK_VALIDITY_RETURN_ANY(rerror, ss && pa_sample_spec_valid(ss), PA_ERR_INVALID, NULL);
154 CHECK_VALIDITY_RETURN_ANY(rerror, !map || (pa_channel_map_valid(map) && map->channels == ss->channels), PA_ERR_INVALID, NULL)
156 p = pa_xnew(pa_simple, 1);
161 p->read_index = p->read_length = 0;
163 if (!(p->mainloop = pa_threaded_mainloop_new()))
166 if (!(p->context = pa_context_new(pa_threaded_mainloop_get_api(p->mainloop), name)))
169 pa_context_set_state_callback(p->context, context_state_cb, p);
171 if (pa_context_connect(p->context, server, 0, NULL) < 0) {
172 error = pa_context_errno(p->context);
176 pa_threaded_mainloop_lock(p->mainloop);
178 if (pa_threaded_mainloop_start(p->mainloop) < 0)
179 goto unlock_and_fail;
181 /* Wait until the context is ready */
182 pa_threaded_mainloop_wait(p->mainloop);
184 if (pa_context_get_state(p->context) != PA_CONTEXT_READY) {
185 error = pa_context_errno(p->context);
186 goto unlock_and_fail;
189 if (!(p->stream = pa_stream_new(p->context, stream_name, ss, map))) {
190 error = pa_context_errno(p->context);
191 goto unlock_and_fail;
194 pa_stream_set_state_callback(p->stream, stream_state_cb, p);
195 pa_stream_set_read_callback(p->stream, stream_request_cb, p);
196 pa_stream_set_write_callback(p->stream, stream_request_cb, p);
197 pa_stream_set_latency_update_callback(p->stream, stream_latency_update_cb, p);
199 if (dir == PA_STREAM_PLAYBACK)
200 r = pa_stream_connect_playback(p->stream, dev, attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE, NULL, NULL);
202 r = pa_stream_connect_record(p->stream, dev, attr, PA_STREAM_INTERPOLATE_TIMING|PA_STREAM_AUTO_TIMING_UPDATE);
205 error = pa_context_errno(p->context);
206 goto unlock_and_fail;
209 /* Wait until the stream is ready */
210 pa_threaded_mainloop_wait(p->mainloop);
212 /* Wait until the stream is ready */
213 if (pa_stream_get_state(p->stream) != PA_STREAM_READY) {
214 error = pa_context_errno(p->context);
215 goto unlock_and_fail;
218 pa_threaded_mainloop_unlock(p->mainloop);
223 pa_threaded_mainloop_unlock(p->mainloop);
232 void pa_simple_free(pa_simple *s) {
236 pa_threaded_mainloop_stop(s->mainloop);
239 pa_stream_unref(s->stream);
242 pa_context_unref(s->context);
245 pa_threaded_mainloop_free(s->mainloop);
250 int pa_simple_write(pa_simple *p, const void*data, size_t length, int *rerror) {
253 CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
254 CHECK_VALIDITY_RETURN_ANY(rerror, data && length, PA_ERR_INVALID, -1);
256 pa_threaded_mainloop_lock(p->mainloop);
258 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
264 while (!(l = pa_stream_writable_size(p->stream))) {
265 pa_threaded_mainloop_wait(p->mainloop);
266 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
269 CHECK_SUCCESS_GOTO(p, rerror, l != (size_t) -1, unlock_and_fail);
274 r = pa_stream_write(p->stream, data, l, NULL, 0, PA_SEEK_RELATIVE);
275 CHECK_SUCCESS_GOTO(p, rerror, r >= 0, unlock_and_fail);
277 data = (const uint8_t*) data + l;
281 pa_threaded_mainloop_unlock(p->mainloop);
285 pa_threaded_mainloop_unlock(p->mainloop);
289 int pa_simple_read(pa_simple *p, void*data, size_t length, int *rerror) {
292 CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_RECORD, PA_ERR_BADSTATE, -1);
293 CHECK_VALIDITY_RETURN_ANY(rerror, data && length, PA_ERR_INVALID, -1);
295 pa_threaded_mainloop_lock(p->mainloop);
297 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
302 while (!p->read_data) {
305 r = pa_stream_peek(p->stream, &p->read_data, &p->read_length);
306 CHECK_SUCCESS_GOTO(p, rerror, r == 0, unlock_and_fail);
309 pa_threaded_mainloop_wait(p->mainloop);
310 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
315 l = p->read_length < length ? p->read_length : length;
316 memcpy(data, (const uint8_t*) p->read_data+p->read_index, l);
318 data = (uint8_t*) data + l;
324 if (!p->read_length) {
327 r = pa_stream_drop(p->stream);
332 CHECK_SUCCESS_GOTO(p, rerror, r == 0, unlock_and_fail);
336 pa_threaded_mainloop_unlock(p->mainloop);
340 pa_threaded_mainloop_unlock(p->mainloop);
344 static void success_cb(pa_stream *s, int success, void *userdata) {
345 pa_simple *p = userdata;
350 p->operation_success = success;
351 pa_threaded_mainloop_signal(p->mainloop, 0);
354 int pa_simple_drain(pa_simple *p, int *rerror) {
355 pa_operation *o = NULL;
359 CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
361 pa_threaded_mainloop_lock(p->mainloop);
362 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
364 o = pa_stream_drain(p->stream, success_cb, p);
365 CHECK_SUCCESS_GOTO(p, rerror, o, unlock_and_fail);
367 p->operation_success = 0;
368 while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
369 pa_threaded_mainloop_wait(p->mainloop);
370 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
372 CHECK_SUCCESS_GOTO(p, rerror, p->operation_success, unlock_and_fail);
374 pa_operation_unref(o);
375 pa_threaded_mainloop_unlock(p->mainloop);
382 pa_operation_cancel(o);
383 pa_operation_unref(o);
386 pa_threaded_mainloop_unlock(p->mainloop);
390 int pa_simple_flush(pa_simple *p, int *rerror) {
391 pa_operation *o = NULL;
395 CHECK_VALIDITY_RETURN_ANY(rerror, p->direction == PA_STREAM_PLAYBACK, PA_ERR_BADSTATE, -1);
397 pa_threaded_mainloop_lock(p->mainloop);
398 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
400 o = pa_stream_flush(p->stream, success_cb, p);
401 CHECK_SUCCESS_GOTO(p, rerror, o, unlock_and_fail);
403 p->operation_success = 0;
404 while (pa_operation_get_state(o) != PA_OPERATION_DONE) {
405 pa_threaded_mainloop_wait(p->mainloop);
406 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
408 CHECK_SUCCESS_GOTO(p, rerror, p->operation_success, unlock_and_fail);
410 pa_operation_unref(o);
411 pa_threaded_mainloop_unlock(p->mainloop);
418 pa_operation_cancel(o);
419 pa_operation_unref(o);
422 pa_threaded_mainloop_unlock(p->mainloop);
426 pa_usec_t pa_simple_get_latency(pa_simple *p, int *rerror) {
432 pa_threaded_mainloop_lock(p->mainloop);
435 CHECK_DEAD_GOTO(p, rerror, unlock_and_fail);
437 if (pa_stream_get_latency(p->stream, &t, &negative) >= 0)
440 CHECK_SUCCESS_GOTO(p, rerror, pa_context_errno(p->context) == PA_ERR_NODATA, unlock_and_fail);
442 /* Wait until latency data is available again */
443 pa_threaded_mainloop_wait(p->mainloop);
446 pa_threaded_mainloop_unlock(p->mainloop);
448 return negative ? 0 : t;
452 pa_threaded_mainloop_unlock(p->mainloop);
453 return (pa_usec_t) -1;