2 This file is part of PulseAudio.
4 Copyright 2006-2008 Lennart Poettering
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
30 #include <pulse/xmalloc.h>
31 #include <pulse/gccmacro.h>
33 #include <pulsecore/sink-input.h>
34 #include <pulsecore/thread-mq.h>
35 #include <pulsecore/sample-util.h>
37 #include "play-memblockq.h"
39 typedef struct memblockq_stream
{
42 pa_sink_input
*sink_input
;
43 pa_memblockq
*memblockq
;
47 MEMBLOCKQ_STREAM_MESSAGE_UNLINK
,
50 PA_DECLARE_CLASS(memblockq_stream
);
51 #define MEMBLOCKQ_STREAM(o) (memblockq_stream_cast(o))
52 static PA_DEFINE_CHECK_TYPE(memblockq_stream
, pa_msgobject
);
54 static void memblockq_stream_unlink(memblockq_stream
*u
) {
60 pa_sink_input_unlink(u
->sink_input
);
61 pa_sink_input_unref(u
->sink_input
);
64 memblockq_stream_unref(u
);
67 static void memblockq_stream_free(pa_object
*o
) {
68 memblockq_stream
*u
= MEMBLOCKQ_STREAM(o
);
72 pa_memblockq_free(u
->memblockq
);
77 static int memblockq_stream_process_msg(pa_msgobject
*o
, int code
, void*userdata
, int64_t offset
, pa_memchunk
*chunk
) {
78 memblockq_stream
*u
= MEMBLOCKQ_STREAM(o
);
79 memblockq_stream_assert_ref(u
);
82 case MEMBLOCKQ_STREAM_MESSAGE_UNLINK
:
83 memblockq_stream_unlink(u
);
90 static void sink_input_kill_cb(pa_sink_input
*i
) {
93 pa_sink_input_assert_ref(i
);
94 u
= MEMBLOCKQ_STREAM(i
->userdata
);
95 memblockq_stream_assert_ref(u
);
97 memblockq_stream_unlink(u
);
100 /* Called from IO thread context */
101 static void sink_input_state_change_cb(pa_sink_input
*i
, pa_sink_input_state_t state
) {
104 pa_sink_input_assert_ref(i
);
105 u
= MEMBLOCKQ_STREAM(i
->userdata
);
106 memblockq_stream_assert_ref(u
);
108 /* If we are added for the first time, ask for a rewinding so that
109 * we are heard right-away. */
110 if (PA_SINK_INPUT_IS_LINKED(state
) &&
111 i
->thread_info
.state
== PA_SINK_INPUT_INIT
)
112 pa_sink_input_request_rewind(i
, 0, FALSE
, TRUE
, TRUE
);
115 static int sink_input_pop_cb(pa_sink_input
*i
, size_t nbytes
, pa_memchunk
*chunk
) {
118 pa_sink_input_assert_ref(i
);
120 u
= MEMBLOCKQ_STREAM(i
->userdata
);
121 memblockq_stream_assert_ref(u
);
126 if (pa_memblockq_peek(u
->memblockq
, chunk
) < 0) {
128 if (pa_sink_input_safe_to_remove(i
)) {
130 pa_memblockq_free(u
->memblockq
);
133 pa_asyncmsgq_post(pa_thread_mq_get()->outq
, PA_MSGOBJECT(u
), MEMBLOCKQ_STREAM_MESSAGE_UNLINK
, NULL
, 0, NULL
, NULL
);
139 chunk
->length
= PA_MIN(chunk
->length
, nbytes
);
140 pa_memblockq_drop(u
->memblockq
, chunk
->length
);
145 static void sink_input_process_rewind_cb(pa_sink_input
*i
, size_t nbytes
) {
148 pa_sink_input_assert_ref(i
);
149 u
= MEMBLOCKQ_STREAM(i
->userdata
);
150 memblockq_stream_assert_ref(u
);
155 pa_memblockq_rewind(u
->memblockq
, nbytes
);
158 static void sink_input_update_max_rewind_cb(pa_sink_input
*i
, size_t nbytes
) {
161 pa_sink_input_assert_ref(i
);
162 u
= MEMBLOCKQ_STREAM(i
->userdata
);
163 memblockq_stream_assert_ref(u
);
168 pa_memblockq_set_maxrewind(u
->memblockq
, nbytes
);
171 pa_sink_input
* pa_memblockq_sink_input_new(
173 const pa_sample_spec
*ss
,
174 const pa_channel_map
*map
,
179 memblockq_stream
*u
= NULL
;
180 pa_sink_input_new_data data
;
185 /* We allow creating this stream with no q set, so that it can be
188 u
= pa_msgobject_new(memblockq_stream
);
189 u
->parent
.parent
.free
= memblockq_stream_free
;
190 u
->parent
.process_msg
= memblockq_stream_process_msg
;
191 u
->core
= sink
->core
;
192 u
->sink_input
= NULL
;
195 pa_sink_input_new_data_init(&data
);
197 data
.driver
= __FILE__
;
198 pa_sink_input_new_data_set_sample_spec(&data
, ss
);
199 pa_sink_input_new_data_set_channel_map(&data
, map
);
200 pa_sink_input_new_data_set_volume(&data
, volume
);
201 pa_proplist_update(data
.proplist
, PA_UPDATE_REPLACE
, p
);
203 pa_sink_input_new(&u
->sink_input
, sink
->core
, &data
, 0);
204 pa_sink_input_new_data_done(&data
);
209 u
->sink_input
->pop
= sink_input_pop_cb
;
210 u
->sink_input
->process_rewind
= sink_input_process_rewind_cb
;
211 u
->sink_input
->update_max_rewind
= sink_input_update_max_rewind_cb
;
212 u
->sink_input
->kill
= sink_input_kill_cb
;
213 u
->sink_input
->state_change
= sink_input_state_change_cb
;
214 u
->sink_input
->userdata
= u
;
217 pa_memblockq_sink_input_set_queue(u
->sink_input
, q
);
219 /* The reference to u is dangling here, because we want
220 * to keep this stream around until it is fully played. */
222 /* This sink input is not "put" yet, i.e. pa_sink_input_put() has
223 * not been called! */
225 return pa_sink_input_ref(u
->sink_input
);
229 memblockq_stream_unref(u
);
234 int pa_play_memblockq(
236 const pa_sample_spec
*ss
,
237 const pa_channel_map
*map
,
241 uint32_t *sink_input_index
) {
249 if (!(i
= pa_memblockq_sink_input_new(sink
, ss
, map
, q
, volume
, p
)))
252 pa_sink_input_put(i
);
254 if (sink_input_index
)
255 *sink_input_index
= i
->index
;
257 pa_sink_input_unref(i
);
262 void pa_memblockq_sink_input_set_queue(pa_sink_input
*i
, pa_memblockq
*q
) {
265 pa_sink_input_assert_ref(i
);
266 u
= MEMBLOCKQ_STREAM(i
->userdata
);
267 memblockq_stream_assert_ref(u
);
270 pa_memblockq_free(u
->memblockq
);
272 if ((u
->memblockq
= q
)) {
273 pa_memblockq_set_prebuf(q
, 0);
274 pa_memblockq_set_silence(q
, NULL
);
275 pa_memblockq_willneed(q
);