2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
5 Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
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/utf8.h>
32 #include <pulse/xmalloc.h>
34 #include <pulsecore/sample-util.h>
35 #include <pulsecore/core-subscribe.h>
36 #include <pulsecore/log.h>
37 #include <pulsecore/play-memblockq.h>
38 #include <pulsecore/namereg.h>
39 #include <pulsecore/core-util.h>
41 #include "sink-input.h"
43 #define MEMBLOCKQ_MAXLENGTH (32*1024*1024)
44 #define CONVERT_BUFFER_LENGTH (PA_PAGE_SIZE)
46 static PA_DEFINE_CHECK_TYPE(pa_sink_input
, pa_msgobject
);
48 static void sink_input_free(pa_object
*o
);
50 pa_sink_input_new_data
* pa_sink_input_new_data_init(pa_sink_input_new_data
*data
) {
53 memset(data
, 0, sizeof(*data
));
54 data
->resample_method
= PA_RESAMPLER_INVALID
;
55 data
->proplist
= pa_proplist_new();
60 void pa_sink_input_new_data_set_sample_spec(pa_sink_input_new_data
*data
, const pa_sample_spec
*spec
) {
63 if ((data
->sample_spec_is_set
= !!spec
))
64 data
->sample_spec
= *spec
;
67 void pa_sink_input_new_data_set_channel_map(pa_sink_input_new_data
*data
, const pa_channel_map
*map
) {
70 if ((data
->channel_map_is_set
= !!map
))
71 data
->channel_map
= *map
;
74 void pa_sink_input_new_data_set_volume(pa_sink_input_new_data
*data
, const pa_cvolume
*volume
) {
77 if ((data
->volume_is_set
= !!volume
))
78 data
->volume
= data
->virtual_volume
= *volume
;
81 void pa_sink_input_new_data_set_muted(pa_sink_input_new_data
*data
, pa_bool_t mute
) {
84 data
->muted_is_set
= TRUE
;
88 void pa_sink_input_new_data_done(pa_sink_input_new_data
*data
) {
91 pa_proplist_free(data
->proplist
);
94 /* Called from main context */
95 static void reset_callbacks(pa_sink_input
*i
) {
99 i
->process_rewind
= NULL
;
100 i
->update_max_rewind
= NULL
;
101 i
->update_max_request
= NULL
;
102 i
->update_sink_requested_latency
= NULL
;
103 i
->update_sink_latency_range
= NULL
;
109 i
->get_latency
= NULL
;
110 i
->state_change
= NULL
;
113 /* Called from main context */
114 pa_sink_input
* pa_sink_input_new(
116 pa_sink_input_new_data
*data
,
117 pa_sink_input_flags_t flags
) {
120 pa_resampler
*resampler
= NULL
;
121 char st
[PA_SAMPLE_SPEC_SNPRINT_MAX
], cm
[PA_CHANNEL_MAP_SNPRINT_MAX
];
122 pa_channel_map original_cm
;
127 if (pa_hook_fire(&core
->hooks
[PA_CORE_HOOK_SINK_INPUT_NEW
], data
) < 0)
130 pa_return_null_if_fail(!data
->driver
|| pa_utf8_valid(data
->driver
));
133 data
->sink
= pa_namereg_get(core
, NULL
, PA_NAMEREG_SINK
, TRUE
);
135 pa_return_null_if_fail(data
->sink
);
136 pa_return_null_if_fail(pa_sink_get_state(data
->sink
) != PA_SINK_UNLINKED
);
137 pa_return_null_if_fail(!data
->sync_base
|| (data
->sync_base
->sink
== data
->sink
&& pa_sink_input_get_state(data
->sync_base
) == PA_SINK_INPUT_CORKED
));
139 if (!data
->sample_spec_is_set
)
140 data
->sample_spec
= data
->sink
->sample_spec
;
142 pa_return_null_if_fail(pa_sample_spec_valid(&data
->sample_spec
));
144 if (!data
->channel_map_is_set
) {
145 if (pa_channel_map_compatible(&data
->sink
->channel_map
, &data
->sample_spec
))
146 data
->channel_map
= data
->sink
->channel_map
;
148 pa_channel_map_init_extend(&data
->channel_map
, data
->sample_spec
.channels
, PA_CHANNEL_MAP_DEFAULT
);
151 pa_return_null_if_fail(pa_channel_map_valid(&data
->channel_map
));
152 pa_return_null_if_fail(pa_channel_map_compatible(&data
->channel_map
, &data
->sample_spec
));
154 if (!data
->volume_is_set
) {
155 pa_cvolume_reset(&data
->volume
, data
->sample_spec
.channels
);
156 pa_cvolume_reset(&data
->virtual_volume
, data
->sample_spec
.channels
);
159 pa_return_null_if_fail(pa_cvolume_valid(&data
->volume
));
160 pa_return_null_if_fail(pa_cvolume_compatible(&data
->volume
.channels
, &data
->sample_spec
));
162 pa_return_null_if_fail(pa_cvolume_valid(&data
->virtual_volume
));
163 pa_return_null_if_fail(pa_cvolume_compatible(&data
->virtual_volume
.channels
, &data
->sample_spec
));
165 if (!data
->muted_is_set
)
168 if (flags
& PA_SINK_INPUT_FIX_FORMAT
)
169 data
->sample_spec
.format
= data
->sink
->sample_spec
.format
;
171 if (flags
& PA_SINK_INPUT_FIX_RATE
)
172 data
->sample_spec
.rate
= data
->sink
->sample_spec
.rate
;
174 if (flags
& PA_SINK_INPUT_FIX_CHANNELS
) {
175 data
->sample_spec
.channels
= data
->sink
->sample_spec
.channels
;
176 data
->channel_map
= data
->sink
->channel_map
;
179 pa_assert(pa_sample_spec_valid(&data
->sample_spec
));
180 pa_assert(pa_channel_map_valid(&data
->channel_map
));
182 /* Due to the fixing of the sample spec the volume might not match anymore */
183 if (data
->volume
.channels
!= data
->sample_spec
.channels
)
184 pa_cvolume_set(&data
->volume
, data
->sample_spec
.channels
, pa_cvolume_avg(&data
->volume
));
186 if (data
->resample_method
== PA_RESAMPLER_INVALID
)
187 data
->resample_method
= core
->resample_method
;
189 pa_return_null_if_fail(data
->resample_method
< PA_RESAMPLER_MAX
);
191 if (pa_hook_fire(&core
->hooks
[PA_CORE_HOOK_SINK_INPUT_FIXATE
], data
) < 0)
194 if (pa_idxset_size(data
->sink
->inputs
) >= PA_MAX_INPUTS_PER_SINK
) {
195 pa_log_warn("Failed to create sink input: too many inputs per sink.");
199 if ((flags
& PA_SINK_INPUT_VARIABLE_RATE
) ||
200 !pa_sample_spec_equal(&data
->sample_spec
, &data
->sink
->sample_spec
) ||
201 !pa_channel_map_equal(&data
->channel_map
, &data
->sink
->channel_map
)) {
203 if (!(resampler
= pa_resampler_new(
205 &data
->sample_spec
, &data
->channel_map
,
206 &data
->sink
->sample_spec
, &data
->sink
->channel_map
,
207 data
->resample_method
,
208 ((flags
& PA_SINK_INPUT_VARIABLE_RATE
) ? PA_RESAMPLER_VARIABLE_RATE
: 0) |
209 ((flags
& PA_SINK_INPUT_NO_REMAP
) ? PA_RESAMPLER_NO_REMAP
: 0) |
210 (core
->disable_remixing
|| (flags
& PA_SINK_INPUT_NO_REMIX
) ? PA_RESAMPLER_NO_REMIX
: 0) |
211 (core
->disable_lfe_remixing
? PA_RESAMPLER_NO_LFE
: 0)))) {
212 pa_log_warn("Unsupported resampling operation.");
216 data
->resample_method
= pa_resampler_get_method(resampler
);
219 i
= pa_msgobject_new(pa_sink_input
);
220 i
->parent
.parent
.free
= sink_input_free
;
221 i
->parent
.process_msg
= pa_sink_input_process_msg
;
224 i
->state
= PA_SINK_INPUT_INIT
;
226 i
->proplist
= pa_proplist_copy(data
->proplist
);
227 i
->driver
= pa_xstrdup(data
->driver
);
228 i
->module
= data
->module
;
229 i
->sink
= data
->sink
;
230 i
->client
= data
->client
;
232 i
->resample_method
= data
->resample_method
;
233 i
->sample_spec
= data
->sample_spec
;
234 i
->channel_map
= data
->channel_map
;
236 i
->virtual_volume
= data
->virtual_volume
;
237 i
->volume
= data
->volume
;
239 i
->muted
= data
->muted
;
241 if (data
->sync_base
) {
242 i
->sync_next
= data
->sync_base
->sync_next
;
243 i
->sync_prev
= data
->sync_base
;
245 if (data
->sync_base
->sync_next
)
246 data
->sync_base
->sync_next
->sync_prev
= i
;
247 data
->sync_base
->sync_next
= i
;
249 i
->sync_next
= i
->sync_prev
= NULL
;
251 i
->direct_outputs
= pa_idxset_new(NULL
, NULL
);
256 i
->thread_info
.state
= i
->state
;
257 i
->thread_info
.attached
= FALSE
;
258 pa_atomic_store(&i
->thread_info
.drained
, 1);
259 i
->thread_info
.sample_spec
= i
->sample_spec
;
260 i
->thread_info
.resampler
= resampler
;
261 i
->thread_info
.volume
= i
->volume
;
262 i
->thread_info
.muted
= i
->muted
;
263 i
->thread_info
.requested_sink_latency
= (pa_usec_t
) -1;
264 i
->thread_info
.rewrite_nbytes
= 0;
265 i
->thread_info
.rewrite_flush
= FALSE
;
266 i
->thread_info
.underrun_for
= (uint64_t) -1;
267 i
->thread_info
.playing_for
= 0;
268 i
->thread_info
.direct_outputs
= pa_hashmap_new(pa_idxset_trivial_hash_func
, pa_idxset_trivial_compare_func
);
270 i
->thread_info
.render_memblockq
= pa_memblockq_new(
274 pa_frame_size(&i
->sink
->sample_spec
),
280 pa_assert_se(pa_idxset_put(core
->sink_inputs
, pa_sink_input_ref(i
), &i
->index
) == 0);
281 pa_assert_se(pa_idxset_put(i
->sink
->inputs
, i
, NULL
) == 0);
283 pa_log_info("Created input %u \"%s\" on %s with sample spec %s and channel map %s",
285 pa_strnull(pa_proplist_gets(i
->proplist
, PA_PROP_MEDIA_NAME
)),
287 pa_sample_spec_snprint(st
, sizeof(st
), &i
->sample_spec
),
288 pa_channel_map_snprint(cm
, sizeof(cm
), &i
->channel_map
));
290 /* Don't forget to call pa_sink_input_put! */
295 /* Called from main context */
296 static void update_n_corked(pa_sink_input
*i
, pa_sink_input_state_t state
) {
299 if (i
->state
== PA_SINK_INPUT_CORKED
&& state
!= PA_SINK_INPUT_CORKED
)
300 pa_assert_se(i
->sink
->n_corked
-- >= 1);
301 else if (i
->state
!= PA_SINK_INPUT_CORKED
&& state
== PA_SINK_INPUT_CORKED
)
304 pa_sink_update_status(i
->sink
);
307 /* Called from main context */
308 static int sink_input_set_state(pa_sink_input
*i
, pa_sink_input_state_t state
) {
309 pa_sink_input
*ssync
;
312 if (state
== PA_SINK_INPUT_DRAINED
)
313 state
= PA_SINK_INPUT_RUNNING
;
315 if (i
->state
== state
)
318 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
), PA_SINK_INPUT_MESSAGE_SET_STATE
, PA_UINT_TO_PTR(state
), 0, NULL
) == 0);
320 update_n_corked(i
, state
);
323 for (ssync
= i
->sync_prev
; ssync
; ssync
= ssync
->sync_prev
) {
324 update_n_corked(ssync
, state
);
325 ssync
->state
= state
;
327 for (ssync
= i
->sync_next
; ssync
; ssync
= ssync
->sync_next
) {
328 update_n_corked(ssync
, state
);
329 ssync
->state
= state
;
332 if (state
!= PA_SINK_INPUT_UNLINKED
) {
333 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED
], i
);
335 for (ssync
= i
->sync_prev
; ssync
; ssync
= ssync
->sync_prev
)
336 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED
], ssync
);
338 for (ssync
= i
->sync_next
; ssync
; ssync
= ssync
->sync_next
)
339 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED
], ssync
);
345 /* Called from main context */
346 void pa_sink_input_unlink(pa_sink_input
*i
) {
348 pa_source_output
*o
, *p
= NULL
;
351 /* See pa_sink_unlink() for a couple of comments how this function
354 pa_sink_input_ref(i
);
356 linked
= PA_SINK_INPUT_IS_LINKED(i
->state
);
359 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_UNLINK
], i
);
362 i
->sync_prev
->sync_next
= i
->sync_next
;
364 i
->sync_next
->sync_prev
= i
->sync_prev
;
366 i
->sync_prev
= i
->sync_next
= NULL
;
368 pa_idxset_remove_by_data(i
->sink
->core
->sink_inputs
, i
, NULL
);
369 if (pa_idxset_remove_by_data(i
->sink
->inputs
, i
, NULL
))
370 pa_sink_input_unref(i
);
372 while ((o
= pa_idxset_first(i
->direct_outputs
, NULL
))) {
374 pa_source_output_kill(o
);
378 update_n_corked(i
, PA_SINK_INPUT_UNLINKED
);
379 i
->state
= PA_SINK_INPUT_UNLINKED
;
382 if (i
->sink
->asyncmsgq
)
383 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
->sink
), PA_SINK_MESSAGE_REMOVE_INPUT
, i
, 0, NULL
) == 0);
388 pa_subscription_post(i
->sink
->core
, PA_SUBSCRIPTION_EVENT_SINK_INPUT
|PA_SUBSCRIPTION_EVENT_REMOVE
, i
->index
);
389 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_UNLINK_POST
], i
);
393 pa_sink_input_unref(i
);
396 /* Called from main context */
397 static void sink_input_free(pa_object
*o
) {
398 pa_sink_input
* i
= PA_SINK_INPUT(o
);
401 pa_assert(pa_sink_input_refcnt(i
) == 0);
403 if (PA_SINK_INPUT_IS_LINKED(i
->state
))
404 pa_sink_input_unlink(i
);
406 pa_log_info("Freeing input %u \"%s\"", i
->index
, pa_strnull(pa_proplist_gets(i
->proplist
, PA_PROP_MEDIA_NAME
)));
408 pa_assert(!i
->thread_info
.attached
);
410 if (i
->thread_info
.render_memblockq
)
411 pa_memblockq_free(i
->thread_info
.render_memblockq
);
413 if (i
->thread_info
.resampler
)
414 pa_resampler_free(i
->thread_info
.resampler
);
417 pa_proplist_free(i
->proplist
);
419 if (i
->direct_outputs
)
420 pa_idxset_free(i
->direct_outputs
, NULL
, NULL
);
422 if (i
->thread_info
.direct_outputs
)
423 pa_hashmap_free(i
->thread_info
.direct_outputs
, NULL
, NULL
);
429 /* Called from main context */
430 void pa_sink_input_put(pa_sink_input
*i
) {
431 pa_sink_input_state_t state
;
432 pa_sink_input_assert_ref(i
);
434 pa_assert(i
->state
== PA_SINK_INPUT_INIT
);
436 /* The following fields must be initialized properly */
438 pa_assert(i
->process_rewind
);
441 i
->thread_info
.volume
= i
->volume
;
442 i
->thread_info
.muted
= i
->muted
;
444 state
= i
->flags
& PA_SINK_INPUT_START_CORKED
? PA_SINK_INPUT_CORKED
: PA_SINK_INPUT_RUNNING
;
446 update_n_corked(i
, state
);
449 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
->sink
), PA_SINK_MESSAGE_ADD_INPUT
, i
, 0, NULL
) == 0);
451 pa_subscription_post(i
->sink
->core
, PA_SUBSCRIPTION_EVENT_SINK_INPUT
|PA_SUBSCRIPTION_EVENT_NEW
, i
->index
);
452 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_PUT
], i
);
455 /* Called from main context */
456 void pa_sink_input_kill(pa_sink_input
*i
) {
457 pa_sink_input_assert_ref(i
);
458 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
463 /* Called from main context */
464 pa_usec_t
pa_sink_input_get_latency(pa_sink_input
*i
, pa_usec_t
*sink_latency
) {
465 pa_usec_t r
[2] = { 0, 0 };
467 pa_sink_input_assert_ref(i
);
468 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
470 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
), PA_SINK_INPUT_MESSAGE_GET_LATENCY
, r
, 0, NULL
) == 0);
473 r
[0] += i
->get_latency(i
);
476 *sink_latency
= r
[1];
481 /* Called from thread context */
482 int pa_sink_input_peek(pa_sink_input
*i
, size_t slength
/* in sink frames */, pa_memchunk
*chunk
, pa_cvolume
*volume
) {
483 pa_bool_t do_volume_adj_here
;
484 pa_bool_t volume_is_norm
;
485 size_t block_size_max_sink
, block_size_max_sink_input
;
488 pa_sink_input_assert_ref(i
);
489 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->thread_info
.state
));
490 pa_assert(pa_frame_aligned(slength
, &i
->sink
->sample_spec
));
494 /* pa_log_debug("peek"); */
499 pa_assert(i
->thread_info
.state
== PA_SINK_INPUT_RUNNING
||
500 i
->thread_info
.state
== PA_SINK_INPUT_CORKED
||
501 i
->thread_info
.state
== PA_SINK_INPUT_DRAINED
);
503 block_size_max_sink_input
= i
->thread_info
.resampler
?
504 pa_resampler_max_block_size(i
->thread_info
.resampler
) :
505 pa_frame_align(pa_mempool_block_size_max(i
->sink
->core
->mempool
), &i
->sample_spec
);
507 block_size_max_sink
= pa_frame_align(pa_mempool_block_size_max(i
->sink
->core
->mempool
), &i
->sink
->sample_spec
);
509 /* Default buffer size */
511 slength
= pa_frame_align(CONVERT_BUFFER_LENGTH
, &i
->sink
->sample_spec
);
513 if (slength
> block_size_max_sink
)
514 slength
= block_size_max_sink
;
516 if (i
->thread_info
.resampler
) {
517 ilength
= pa_resampler_request(i
->thread_info
.resampler
, slength
);
520 ilength
= pa_frame_align(CONVERT_BUFFER_LENGTH
, &i
->sample_spec
);
524 if (ilength
> block_size_max_sink_input
)
525 ilength
= block_size_max_sink_input
;
527 /* If the channel maps of the sink and this stream differ, we need
528 * to adjust the volume *before* we resample. Otherwise we can do
529 * it after and leave it for the sink code */
531 do_volume_adj_here
= !pa_channel_map_equal(&i
->channel_map
, &i
->sink
->channel_map
);
532 volume_is_norm
= pa_cvolume_is_norm(&i
->thread_info
.volume
) && !i
->thread_info
.muted
;
534 while (!pa_memblockq_is_readable(i
->thread_info
.render_memblockq
)) {
537 /* There's nothing in our render queue. We need to fill it up
538 * with data from the implementor. */
540 if (i
->thread_info
.state
== PA_SINK_INPUT_CORKED
||
541 i
->pop(i
, ilength
, &tchunk
) < 0) {
543 /* OK, we're corked or the implementor didn't give us any
544 * data, so let's just hand out silence */
545 pa_atomic_store(&i
->thread_info
.drained
, 1);
547 pa_memblockq_seek(i
->thread_info
.render_memblockq
, (int64_t) slength
, PA_SEEK_RELATIVE
);
548 i
->thread_info
.playing_for
= 0;
549 if (i
->thread_info
.underrun_for
!= (uint64_t) -1)
550 i
->thread_info
.underrun_for
+= ilength
;
554 pa_atomic_store(&i
->thread_info
.drained
, 0);
556 pa_assert(tchunk
.length
> 0);
557 pa_assert(tchunk
.memblock
);
559 i
->thread_info
.underrun_for
= 0;
560 i
->thread_info
.playing_for
+= tchunk
.length
;
562 while (tchunk
.length
> 0) {
566 pa_memblock_ref(wchunk
.memblock
);
568 if (wchunk
.length
> block_size_max_sink_input
)
569 wchunk
.length
= block_size_max_sink_input
;
571 /* It might be necessary to adjust the volume here */
572 if (do_volume_adj_here
&& !volume_is_norm
) {
573 pa_memchunk_make_writable(&wchunk
, 0);
575 if (i
->thread_info
.muted
)
576 pa_silence_memchunk(&wchunk
, &i
->thread_info
.sample_spec
);
578 pa_volume_memchunk(&wchunk
, &i
->thread_info
.sample_spec
, &i
->thread_info
.volume
);
581 if (!i
->thread_info
.resampler
)
582 pa_memblockq_push_align(i
->thread_info
.render_memblockq
, &wchunk
);
585 pa_resampler_run(i
->thread_info
.resampler
, &wchunk
, &rchunk
);
587 /* pa_log_debug("pushing %lu", (unsigned long) rchunk.length); */
589 if (rchunk
.memblock
) {
590 pa_memblockq_push_align(i
->thread_info
.render_memblockq
, &rchunk
);
591 pa_memblock_unref(rchunk
.memblock
);
595 pa_memblock_unref(wchunk
.memblock
);
597 tchunk
.index
+= wchunk
.length
;
598 tchunk
.length
-= wchunk
.length
;
601 pa_memblock_unref(tchunk
.memblock
);
604 pa_assert_se(pa_memblockq_peek(i
->thread_info
.render_memblockq
, chunk
) >= 0);
606 pa_assert(chunk
->length
> 0);
607 pa_assert(chunk
->memblock
);
609 /* pa_log_debug("peeking %lu", (unsigned long) chunk->length); */
611 if (chunk
->length
> block_size_max_sink
)
612 chunk
->length
= block_size_max_sink
;
614 /* Let's see if we had to apply the volume adjustment ourselves,
615 * or if this can be done by the sink for us */
617 if (do_volume_adj_here
)
618 /* We had different channel maps, so we already did the adjustment */
619 pa_cvolume_reset(volume
, i
->sink
->sample_spec
.channels
);
620 else if (i
->thread_info
.muted
)
621 /* We've both the same channel map, so let's have the sink do the adjustment for us*/
622 pa_cvolume_mute(volume
, i
->sink
->sample_spec
.channels
);
624 *volume
= i
->thread_info
.volume
;
629 /* Called from thread context */
630 void pa_sink_input_drop(pa_sink_input
*i
, size_t nbytes
/* in sink sample spec */) {
631 pa_sink_input_assert_ref(i
);
633 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->thread_info
.state
));
634 pa_assert(pa_frame_aligned(nbytes
, &i
->sink
->sample_spec
));
635 pa_assert(nbytes
> 0);
637 /* pa_log_debug("dropping %lu", (unsigned long) nbytes); */
639 pa_memblockq_drop(i
->thread_info
.render_memblockq
, nbytes
);
642 /* Called from thread context */
643 void pa_sink_input_process_rewind(pa_sink_input
*i
, size_t nbytes
/* in sink sample spec */) {
645 pa_bool_t called
= FALSE
;
646 pa_sink_input_assert_ref(i
);
648 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->thread_info
.state
));
649 pa_assert(pa_frame_aligned(nbytes
, &i
->sink
->sample_spec
));
651 /* pa_log_debug("rewind(%lu, %lu)", (unsigned long) nbytes, (unsigned long) i->thread_info.rewrite_nbytes); */
653 lbq
= pa_memblockq_get_length(i
->thread_info
.render_memblockq
);
656 pa_log_debug("Have to rewind %lu bytes on render memblockq.", (unsigned long) nbytes
);
657 pa_memblockq_rewind(i
->thread_info
.render_memblockq
, nbytes
);
660 if (i
->thread_info
.rewrite_nbytes
== (size_t) -1) {
662 /* We were asked to drop all buffered data, and rerequest new
663 * data from implementor the next time push() is called */
665 pa_memblockq_flush_write(i
->thread_info
.render_memblockq
);
667 } else if (i
->thread_info
.rewrite_nbytes
> 0) {
668 size_t max_rewrite
, amount
;
670 /* Calculate how much make sense to rewrite at most */
671 max_rewrite
= nbytes
+ lbq
;
673 /* Transform into local domain */
674 if (i
->thread_info
.resampler
)
675 max_rewrite
= pa_resampler_request(i
->thread_info
.resampler
, max_rewrite
);
677 /* Calculate how much of the rewinded data should actually be rewritten */
678 amount
= PA_MIN(i
->thread_info
.rewrite_nbytes
, max_rewrite
);
681 pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) amount
);
683 /* Tell the implementor */
684 if (i
->process_rewind
)
685 i
->process_rewind(i
, amount
);
688 /* Convert back to to sink domain */
689 if (i
->thread_info
.resampler
)
690 amount
= pa_resampler_result(i
->thread_info
.resampler
, amount
);
693 /* Ok, now update the write pointer */
694 pa_memblockq_seek(i
->thread_info
.render_memblockq
, - ((int64_t) amount
), PA_SEEK_RELATIVE
);
696 if (i
->thread_info
.rewrite_flush
)
697 pa_memblockq_silence(i
->thread_info
.render_memblockq
);
699 /* And reset the resampler */
700 if (i
->thread_info
.resampler
)
701 pa_resampler_reset(i
->thread_info
.resampler
);
706 if (i
->process_rewind
)
707 i
->process_rewind(i
, 0);
709 i
->thread_info
.rewrite_nbytes
= 0;
710 i
->thread_info
.rewrite_flush
= FALSE
;
713 /* Called from thread context */
714 void pa_sink_input_update_max_rewind(pa_sink_input
*i
, size_t nbytes
/* in the sink's sample spec */) {
715 pa_sink_input_assert_ref(i
);
716 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->thread_info
.state
));
717 pa_assert(pa_frame_aligned(nbytes
, &i
->sink
->sample_spec
));
719 pa_memblockq_set_maxrewind(i
->thread_info
.render_memblockq
, nbytes
);
721 if (i
->update_max_rewind
)
722 i
->update_max_rewind(i
, i
->thread_info
.resampler
? pa_resampler_request(i
->thread_info
.resampler
, nbytes
) : nbytes
);
725 /* Called from thread context */
726 void pa_sink_input_update_max_request(pa_sink_input
*i
, size_t nbytes
/* in the sink's sample spec */) {
727 pa_sink_input_assert_ref(i
);
728 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->thread_info
.state
));
729 pa_assert(pa_frame_aligned(nbytes
, &i
->sink
->sample_spec
));
731 if (i
->update_max_request
)
732 i
->update_max_request(i
, i
->thread_info
.resampler
? pa_resampler_request(i
->thread_info
.resampler
, nbytes
) : nbytes
);
735 /* Called from thread context */
736 static pa_usec_t
fixup_latency(pa_sink
*s
, pa_usec_t usec
) {
737 pa_sink_assert_ref(s
);
739 if (usec
== (pa_usec_t
) -1)
742 if (s
->thread_info
.max_latency
> 0 && usec
> s
->thread_info
.max_latency
)
743 usec
= s
->thread_info
.max_latency
;
745 if (s
->thread_info
.min_latency
> 0 && usec
< s
->thread_info
.min_latency
)
746 usec
= s
->thread_info
.min_latency
;
751 /* Called from thread context */
752 pa_usec_t
pa_sink_input_set_requested_latency_within_thread(pa_sink_input
*i
, pa_usec_t usec
) {
753 pa_sink_input_assert_ref(i
);
755 usec
= fixup_latency(i
->sink
, usec
);
756 i
->thread_info
.requested_sink_latency
= usec
;
757 pa_sink_invalidate_requested_latency(i
->sink
);
762 /* Called from main context */
763 pa_usec_t
pa_sink_input_set_requested_latency(pa_sink_input
*i
, pa_usec_t usec
) {
764 pa_sink_input_assert_ref(i
);
766 if (PA_SINK_INPUT_IS_LINKED(i
->state
))
767 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
), PA_SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY
, &usec
, 0, NULL
) == 0);
769 /* If this sink input is not realized yet, we have to touch
770 * the thread info data directly */
772 i
->thread_info
.requested_sink_latency
= usec
;
777 /* Called from main context */
778 pa_usec_t
pa_sink_input_get_requested_latency(pa_sink_input
*i
) {
781 pa_sink_input_assert_ref(i
);
783 if (PA_SINK_INPUT_IS_LINKED(i
->state
))
784 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
), PA_SINK_INPUT_MESSAGE_GET_REQUESTED_LATENCY
, &usec
, 0, NULL
) == 0);
786 /* If this sink input is not realized yet, we have to touch
787 * the thread info data directly */
788 usec
= i
->thread_info
.requested_sink_latency
;
793 /* Called from main context */
794 void pa_sink_input_set_volume(pa_sink_input
*i
, const pa_cvolume
*volume
) {
795 pa_sink_input_set_volume_data data
;
797 pa_sink_input_assert_ref(i
);
798 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
800 pa_assert(pa_cvolume_valid(volume
));
801 pa_assert(pa_cvolume_compatible(volume
, &i
->sample_spec
));
804 data
.virtual_volume
= *volume
;
805 data
.volume
= *volume
;
807 if (pa_hook_fire(&i
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_SET_VOLUME
], &data
) < 0)
810 if (!pa_cvolume_equal(&i
->volume
, &data
.volume
)) {
811 i
->volume
= data
.volume
;
812 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
), PA_SINK_INPUT_MESSAGE_SET_VOLUME
, &data
.volume
, 0, NULL
) == 0);
815 if (!pa_cvolume_equal(&i
->virtual_volume
, &data
.virtual_volume
)) {
816 i
->virtual_volume
= data
.virtual_volume
;
817 pa_subscription_post(i
->sink
->core
, PA_SUBSCRIPTION_EVENT_SINK_INPUT
|PA_SUBSCRIPTION_EVENT_CHANGE
, i
->index
);
821 /* Called from main context */
822 const pa_cvolume
*pa_sink_input_get_volume(pa_sink_input
*i
) {
823 pa_sink_input_assert_ref(i
);
824 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
826 return &i
->virtual_volume
;
829 /* Called from main context */
830 void pa_sink_input_set_mute(pa_sink_input
*i
, pa_bool_t mute
) {
832 pa_sink_input_assert_ref(i
);
833 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
835 if (!i
->muted
== !mute
)
840 pa_asyncmsgq_post(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
), PA_SINK_INPUT_MESSAGE_SET_MUTE
, PA_UINT_TO_PTR(mute
), 0, NULL
, NULL
);
841 pa_subscription_post(i
->sink
->core
, PA_SUBSCRIPTION_EVENT_SINK_INPUT
|PA_SUBSCRIPTION_EVENT_CHANGE
, i
->index
);
844 /* Called from main context */
845 pa_bool_t
pa_sink_input_get_mute(pa_sink_input
*i
) {
846 pa_sink_input_assert_ref(i
);
847 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
852 /* Called from main context */
853 void pa_sink_input_cork(pa_sink_input
*i
, pa_bool_t b
) {
854 pa_sink_input_assert_ref(i
);
855 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
857 sink_input_set_state(i
, b
? PA_SINK_INPUT_CORKED
: PA_SINK_INPUT_RUNNING
);
860 /* Called from main context */
861 int pa_sink_input_set_rate(pa_sink_input
*i
, uint32_t rate
) {
862 pa_sink_input_assert_ref(i
);
863 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
864 pa_return_val_if_fail(i
->thread_info
.resampler
, -1);
866 if (i
->sample_spec
.rate
== rate
)
869 i
->sample_spec
.rate
= rate
;
871 pa_asyncmsgq_post(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
), PA_SINK_INPUT_MESSAGE_SET_RATE
, PA_UINT_TO_PTR(rate
), 0, NULL
, NULL
);
873 pa_subscription_post(i
->sink
->core
, PA_SUBSCRIPTION_EVENT_SINK_INPUT
|PA_SUBSCRIPTION_EVENT_CHANGE
, i
->index
);
877 /* Called from main context */
878 void pa_sink_input_set_name(pa_sink_input
*i
, const char *name
) {
880 pa_sink_input_assert_ref(i
);
882 if (!name
&& !pa_proplist_contains(i
->proplist
, PA_PROP_MEDIA_NAME
))
885 old
= pa_proplist_gets(i
->proplist
, PA_PROP_MEDIA_NAME
);
887 if (old
&& name
&& !strcmp(old
, name
))
891 pa_proplist_sets(i
->proplist
, PA_PROP_MEDIA_NAME
, name
);
893 pa_proplist_unset(i
->proplist
, PA_PROP_MEDIA_NAME
);
895 if (PA_SINK_INPUT_IS_LINKED(i
->state
)) {
896 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_PROPLIST_CHANGED
], i
);
897 pa_subscription_post(i
->sink
->core
, PA_SUBSCRIPTION_EVENT_SINK_INPUT
|PA_SUBSCRIPTION_EVENT_CHANGE
, i
->index
);
901 /* Called from main context */
902 pa_resample_method_t
pa_sink_input_get_resample_method(pa_sink_input
*i
) {
903 pa_sink_input_assert_ref(i
);
905 return i
->resample_method
;
908 /* Called from main context */
909 int pa_sink_input_move_to(pa_sink_input
*i
, pa_sink
*dest
) {
910 pa_resampler
*new_resampler
;
912 pa_sink_input_move_hook_data hook_data
;
913 pa_source_output
*o
, *p
= NULL
;
915 pa_sink_input_assert_ref(i
);
916 pa_assert(PA_SINK_INPUT_IS_LINKED(i
->state
));
917 pa_sink_assert_ref(dest
);
924 if (i
->flags
& PA_SINK_INPUT_DONT_MOVE
)
927 if (i
->sync_next
|| i
->sync_prev
) {
928 pa_log_warn("Moving synchronised streams not supported.");
932 if (pa_idxset_size(dest
->inputs
) >= PA_MAX_INPUTS_PER_SINK
) {
933 pa_log_warn("Failed to move sink input: too many inputs per sink.");
937 /* Kill directly connected outputs */
938 while ((o
= pa_idxset_first(i
->direct_outputs
, NULL
))) {
940 pa_source_output_kill(o
);
944 if (i
->thread_info
.resampler
&&
945 pa_sample_spec_equal(&origin
->sample_spec
, &dest
->sample_spec
) &&
946 pa_channel_map_equal(&origin
->channel_map
, &dest
->channel_map
))
948 /* Try to reuse the old resampler if possible */
949 new_resampler
= i
->thread_info
.resampler
;
951 else if ((i
->flags
& PA_SINK_INPUT_VARIABLE_RATE
) ||
952 !pa_sample_spec_equal(&i
->sample_spec
, &dest
->sample_spec
) ||
953 !pa_channel_map_equal(&i
->channel_map
, &dest
->channel_map
)) {
955 /* Okey, we need a new resampler for the new sink */
957 if (!(new_resampler
= pa_resampler_new(
959 &i
->sample_spec
, &i
->channel_map
,
960 &dest
->sample_spec
, &dest
->channel_map
,
962 ((i
->flags
& PA_SINK_INPUT_VARIABLE_RATE
) ? PA_RESAMPLER_VARIABLE_RATE
: 0) |
963 ((i
->flags
& PA_SINK_INPUT_NO_REMAP
) ? PA_RESAMPLER_NO_REMAP
: 0) |
964 (i
->core
->disable_remixing
|| (i
->flags
& PA_SINK_INPUT_NO_REMIX
) ? PA_RESAMPLER_NO_REMIX
: 0)))) {
965 pa_log_warn("Unsupported resampling operation.");
969 new_resampler
= NULL
;
971 hook_data
.sink_input
= i
;
972 hook_data
.destination
= dest
;
973 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_MOVE
], &hook_data
);
975 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
->sink
), PA_SINK_MESSAGE_START_MOVE
, i
, 0, NULL
) == 0);
977 pa_idxset_remove_by_data(origin
->inputs
, i
, NULL
);
978 pa_idxset_put(dest
->inputs
, i
, NULL
);
981 if (pa_sink_input_get_state(i
) == PA_SINK_INPUT_CORKED
) {
982 pa_assert_se(origin
->n_corked
-- >= 1);
986 /* Replace resampler and render queue */
987 if (new_resampler
!= i
->thread_info
.resampler
) {
989 if (i
->thread_info
.resampler
)
990 pa_resampler_free(i
->thread_info
.resampler
);
991 i
->thread_info
.resampler
= new_resampler
;
993 pa_memblockq_free(i
->thread_info
.render_memblockq
);
995 i
->thread_info
.render_memblockq
= pa_memblockq_new(
999 pa_frame_size(&i
->sink
->sample_spec
),
1006 pa_sink_update_status(origin
);
1007 pa_sink_update_status(dest
);
1009 pa_assert_se(pa_asyncmsgq_send(i
->sink
->asyncmsgq
, PA_MSGOBJECT(i
->sink
), PA_SINK_MESSAGE_FINISH_MOVE
, i
, 0, NULL
) == 0);
1014 pa_hook_fire(&i
->sink
->core
->hooks
[PA_CORE_HOOK_SINK_INPUT_MOVE_POST
], i
);
1016 pa_log_debug("Successfully moved sink input %i from %s to %s.", i
->index
, origin
->name
, dest
->name
);
1018 /* Notify everyone */
1019 pa_subscription_post(i
->sink
->core
, PA_SUBSCRIPTION_EVENT_SINK_INPUT
|PA_SUBSCRIPTION_EVENT_CHANGE
, i
->index
);
1024 /* Called from IO thread context */
1025 void pa_sink_input_set_state_within_thread(pa_sink_input
*i
, pa_sink_input_state_t state
) {
1026 pa_bool_t corking
, uncorking
;
1027 pa_sink_input_assert_ref(i
);
1029 if (state
== i
->thread_info
.state
)
1032 if ((state
== PA_SINK_INPUT_DRAINED
|| state
== PA_SINK_INPUT_RUNNING
) &&
1033 !(i
->thread_info
.state
== PA_SINK_INPUT_DRAINED
|| i
->thread_info
.state
!= PA_SINK_INPUT_RUNNING
))
1034 pa_atomic_store(&i
->thread_info
.drained
, 1);
1036 corking
= state
== PA_SINK_INPUT_CORKED
&& i
->thread_info
.state
== PA_SINK_INPUT_RUNNING
;
1037 uncorking
= i
->thread_info
.state
== PA_SINK_INPUT_CORKED
&& state
== PA_SINK_INPUT_RUNNING
;
1039 if (i
->state_change
)
1040 i
->state_change(i
, state
);
1042 i
->thread_info
.state
= state
;
1046 pa_log_debug("Requesting rewind due to corking");
1048 /* This will tell the implementing sink input driver to rewind
1049 * so that the unplayed already mixed data is not lost */
1050 pa_sink_input_request_rewind(i
, 0, TRUE
, TRUE
);
1052 } else if (uncorking
) {
1054 i
->thread_info
.underrun_for
= (uint64_t) -1;
1055 i
->thread_info
.playing_for
= 0;
1057 pa_log_debug("Requesting rewind due to uncorking");
1059 /* OK, we're being uncorked. Make sure we're not rewound when
1060 * the hw buffer is remixed and request a remix. */
1061 pa_sink_input_request_rewind(i
, 0, FALSE
, TRUE
);
1065 /* Called from thread context, except when it is not. */
1066 int pa_sink_input_process_msg(pa_msgobject
*o
, int code
, void *userdata
, int64_t offset
, pa_memchunk
*chunk
) {
1067 pa_sink_input
*i
= PA_SINK_INPUT(o
);
1068 pa_sink_input_assert_ref(i
);
1072 case PA_SINK_INPUT_MESSAGE_SET_VOLUME
:
1073 i
->thread_info
.volume
= *((pa_cvolume
*) userdata
);
1074 pa_sink_input_request_rewind(i
, 0, TRUE
, FALSE
);
1077 case PA_SINK_INPUT_MESSAGE_SET_MUTE
:
1078 i
->thread_info
.muted
= PA_PTR_TO_UINT(userdata
);
1079 pa_sink_input_request_rewind(i
, 0, TRUE
, FALSE
);
1082 case PA_SINK_INPUT_MESSAGE_GET_LATENCY
: {
1083 pa_usec_t
*r
= userdata
;
1084 pa_usec_t sink_usec
= 0;
1086 r
[0] += pa_bytes_to_usec(pa_memblockq_get_length(i
->thread_info
.render_memblockq
), &i
->sink
->sample_spec
);
1088 if (i
->sink
->parent
.process_msg(PA_MSGOBJECT(i
->sink
), PA_SINK_MESSAGE_GET_LATENCY
, &sink_usec
, 0, NULL
) >= 0)
1094 case PA_SINK_INPUT_MESSAGE_SET_RATE
:
1096 i
->thread_info
.sample_spec
.rate
= PA_PTR_TO_UINT(userdata
);
1097 pa_resampler_set_input_rate(i
->thread_info
.resampler
, PA_PTR_TO_UINT(userdata
));
1101 case PA_SINK_INPUT_MESSAGE_SET_STATE
: {
1102 pa_sink_input
*ssync
;
1104 pa_sink_input_set_state_within_thread(i
, PA_PTR_TO_UINT(userdata
));
1106 for (ssync
= i
->thread_info
.sync_prev
; ssync
; ssync
= ssync
->thread_info
.sync_prev
)
1107 pa_sink_input_set_state_within_thread(ssync
, PA_PTR_TO_UINT(userdata
));
1109 for (ssync
= i
->thread_info
.sync_next
; ssync
; ssync
= ssync
->thread_info
.sync_next
)
1110 pa_sink_input_set_state_within_thread(ssync
, PA_PTR_TO_UINT(userdata
));
1115 case PA_SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY
: {
1116 pa_usec_t
*usec
= userdata
;
1118 *usec
= pa_sink_input_set_requested_latency_within_thread(i
, *usec
);
1122 case PA_SINK_INPUT_MESSAGE_GET_REQUESTED_LATENCY
: {
1123 pa_usec_t
*r
= userdata
;
1125 *r
= i
->thread_info
.requested_sink_latency
;
1133 /* Called from main thread */
1134 pa_sink_input_state_t
pa_sink_input_get_state(pa_sink_input
*i
) {
1135 pa_sink_input_assert_ref(i
);
1137 if (i
->state
== PA_SINK_INPUT_RUNNING
|| i
->state
== PA_SINK_INPUT_DRAINED
)
1138 return pa_atomic_load(&i
->thread_info
.drained
) ? PA_SINK_INPUT_DRAINED
: PA_SINK_INPUT_RUNNING
;
1143 /* Called from IO context */
1144 pa_bool_t
pa_sink_input_safe_to_remove(pa_sink_input
*i
) {
1145 pa_sink_input_assert_ref(i
);
1147 if (PA_SINK_INPUT_IS_LINKED(i
->thread_info
.state
))
1148 return pa_memblockq_is_empty(i
->thread_info
.render_memblockq
);
1153 /* Called from IO context */
1154 void pa_sink_input_request_rewind(pa_sink_input
*i
, size_t nbytes
/* in our sample spec */, pa_bool_t rewrite
, pa_bool_t flush
) {
1157 /* If 'rewrite' is TRUE the sink is rewound as far as requested
1158 * and possible and the exact value of this is passed back the
1159 * implementor via process_rewind(). If 'flush' is also TRUE all
1160 * already rendered data is also dropped.
1162 * If 'rewrite' is FALSE the sink is rewound as far as requested
1163 * and possible and the already rendered data is dropped so that
1164 * in the next iteration we read new data from the
1165 * implementor. This implies 'flush' is TRUE. */
1167 pa_sink_input_assert_ref(i
);
1168 pa_assert(i
->thread_info
.rewrite_nbytes
== 0);
1170 /* pa_log_debug("request rewrite %lu", (unsigned long) nbytes); */
1172 /* We don't take rewind requests while we are corked */
1173 if (i
->thread_info
.state
== PA_SINK_INPUT_CORKED
)
1176 pa_assert(rewrite
|| flush
);
1178 /* Calculate how much we can rewind locally without having to
1181 lbq
= pa_memblockq_get_length(i
->thread_info
.render_memblockq
);
1185 /* Check if rewinding for the maximum is requested, and if so, fix up */
1188 /* Calculate maximum number of bytes that could be rewound in theory */
1189 nbytes
= i
->sink
->thread_info
.max_rewind
+ lbq
;
1191 /* Transform from sink domain */
1192 if (i
->thread_info
.resampler
)
1193 nbytes
= pa_resampler_request(i
->thread_info
.resampler
, nbytes
);
1197 /* Make sure to not overwrite over underruns */
1198 if (nbytes
> i
->thread_info
.playing_for
)
1199 nbytes
= (size_t) i
->thread_info
.playing_for
;
1201 i
->thread_info
.rewrite_nbytes
= nbytes
;
1203 i
->thread_info
.rewrite_nbytes
= (size_t) -1;
1205 i
->thread_info
.rewrite_flush
= flush
&& i
->thread_info
.rewrite_nbytes
!= 0;
1207 /* Transform to sink domain */
1208 if (i
->thread_info
.resampler
)
1209 nbytes
= pa_resampler_result(i
->thread_info
.resampler
, nbytes
);
1212 pa_sink_request_rewind(i
->sink
, nbytes
- lbq
);
1214 /* This call will make sure process_rewind() is called later */
1215 pa_sink_request_rewind(i
->sink
, 0);
1218 /* Called from main context */
1219 pa_memchunk
* pa_sink_input_get_silence(pa_sink_input
*i
, pa_memchunk
*ret
) {
1220 pa_sink_input_assert_ref(i
);
1223 pa_silence_memchunk_get(
1224 &i
->sink
->core
->silence_cache
,
1225 i
->sink
->core
->mempool
,
1228 i
->thread_info
.resampler
? pa_resampler_max_block_size(i
->thread_info
.resampler
) : 0);