diff options
Diffstat (limited to 'src/pulsecore/sink.c')
| -rw-r--r-- | src/pulsecore/sink.c | 1531 |
1 files changed, 1531 insertions, 0 deletions
diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c new file mode 100644 index 00000000..edb023b2 --- /dev/null +++ b/src/pulsecore/sink.c @@ -0,0 +1,1531 @@ +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PulseAudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdlib.h> +#include <string.h> +#include <stdio.h> + +#include <pulse/introspect.h> +#include <pulse/utf8.h> +#include <pulse/xmalloc.h> +#include <pulse/timeval.h> + +#include <pulsecore/sink-input.h> +#include <pulsecore/namereg.h> +#include <pulsecore/core-util.h> +#include <pulsecore/sample-util.h> +#include <pulsecore/core-subscribe.h> +#include <pulsecore/log.h> +#include <pulsecore/macro.h> +#include <pulsecore/play-memblockq.h> + +#include "sink.h" + +#define MAX_MIX_CHANNELS 32 +#define MIX_BUFFER_LENGTH (PA_PAGE_SIZE) +#define DEFAULT_MIN_LATENCY (4*PA_USEC_PER_MSEC) + +static PA_DEFINE_CHECK_TYPE(pa_sink, pa_msgobject); + +static void sink_free(pa_object *s); + +pa_sink_new_data* pa_sink_new_data_init(pa_sink_new_data *data) { + pa_assert(data); + + memset(data, 0, sizeof(*data)); + data->proplist = pa_proplist_new(); + + return data; +} + +void pa_sink_new_data_set_name(pa_sink_new_data *data, const char *name) { + pa_assert(data); + + pa_xfree(data->name); + data->name = pa_xstrdup(name); +} + +void pa_sink_new_data_set_sample_spec(pa_sink_new_data *data, const pa_sample_spec *spec) { + pa_assert(data); + + if ((data->sample_spec_is_set = !!spec)) + data->sample_spec = *spec; +} + +void pa_sink_new_data_set_channel_map(pa_sink_new_data *data, const pa_channel_map *map) { + pa_assert(data); + + if ((data->channel_map_is_set = !!map)) + data->channel_map = *map; +} + +void pa_sink_new_data_set_volume(pa_sink_new_data *data, const pa_cvolume *volume) { + pa_assert(data); + + if ((data->volume_is_set = !!volume)) + data->volume = *volume; +} + +void pa_sink_new_data_set_muted(pa_sink_new_data *data, pa_bool_t mute) { + pa_assert(data); + + data->muted_is_set = TRUE; + data->muted = !!mute; +} + +void pa_sink_new_data_done(pa_sink_new_data *data) { + pa_assert(data); + + pa_xfree(data->name); + pa_proplist_free(data->proplist); +} + +/* Called from main context */ +static void reset_callbacks(pa_sink *s) { + pa_assert(s); + + s->set_state = NULL; + s->get_volume = NULL; + s->set_volume = NULL; + s->get_mute = NULL; + s->set_mute = NULL; + s->request_rewind = NULL; + s->update_requested_latency = NULL; +} + +/* Called from main context */ +pa_sink* pa_sink_new( + pa_core *core, + pa_sink_new_data *data, + pa_sink_flags_t flags) { + + pa_sink *s; + const char *name; + char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX]; + pa_source_new_data source_data; + const char *dn; + + pa_assert(core); + pa_assert(data); + pa_assert(data->name); + + s = pa_msgobject_new(pa_sink); + + if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SINK, s, data->namereg_fail))) { + pa_xfree(s); + return NULL; + } + + pa_sink_new_data_set_name(data, name); + + if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_NEW], data) < 0) { + pa_xfree(s); + pa_namereg_unregister(core, name); + return NULL; + } + + pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver)); + pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]); + + pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec)); + + if (!data->channel_map_is_set) + pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT)); + + pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map)); + pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels); + + if (!data->volume_is_set) + pa_cvolume_reset(&data->volume, data->sample_spec.channels); + + pa_return_null_if_fail(pa_cvolume_valid(&data->volume)); + pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels); + + if (!data->muted_is_set) + data->muted = FALSE; + + if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_FIXATE], data) < 0) { + pa_xfree(s); + pa_namereg_unregister(core, name); + return NULL; + } + + s->parent.parent.free = sink_free; + s->parent.process_msg = pa_sink_process_msg; + + s->core = core; + s->state = PA_SINK_INIT; + s->flags = flags; + s->name = pa_xstrdup(name); + s->proplist = pa_proplist_copy(data->proplist); + s->driver = pa_xstrdup(data->driver); + s->module = data->module; + + s->sample_spec = data->sample_spec; + s->channel_map = data->channel_map; + + s->inputs = pa_idxset_new(NULL, NULL); + s->n_corked = 0; + + s->volume = data->volume; + s->muted = data->muted; + s->refresh_volume = s->refresh_muted = FALSE; + + reset_callbacks(s); + s->userdata = NULL; + + s->asyncmsgq = NULL; + s->rtpoll = NULL; + + pa_silence_memchunk_get( + &core->silence_cache, + core->mempool, + &s->silence, + &s->sample_spec, + 0); + + s->thread_info.inputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func); + pa_cvolume_reset(&s->thread_info.soft_volume, s->sample_spec.channels); + s->thread_info.soft_muted = FALSE; + s->thread_info.state = s->state; + s->thread_info.rewind_nbytes = 0; + s->thread_info.max_rewind = 0; + s->thread_info.max_request = 0; + s->thread_info.requested_latency_valid = FALSE; + s->thread_info.requested_latency = 0; + s->thread_info.min_latency = DEFAULT_MIN_LATENCY; + s->thread_info.max_latency = 0; + + pa_assert_se(pa_idxset_put(core->sinks, s, &s->index) >= 0); + + pa_log_info("Created sink %u \"%s\" with sample spec %s and channel map %s", + s->index, + s->name, + pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec), + pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map)); + + pa_source_new_data_init(&source_data); + pa_source_new_data_set_sample_spec(&source_data, &s->sample_spec); + pa_source_new_data_set_channel_map(&source_data, &s->channel_map); + source_data.name = pa_sprintf_malloc("%s.monitor", name); + source_data.driver = data->driver; + source_data.module = data->module; + + dn = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION); + pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Monitor of %s", dn ? dn : s->name); + pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_CLASS, "monitor"); + + s->monitor_source = pa_source_new(core, &source_data, 0); + + pa_source_new_data_done(&source_data); + + if (!s->monitor_source) { + pa_sink_unlink(s); + pa_sink_unref(s); + return NULL; + } + + s->monitor_source->monitor_of = s; + + pa_source_set_latency_range(s->monitor_source, s->thread_info.min_latency, s->thread_info.max_latency); + pa_source_set_max_rewind(s->monitor_source, s->thread_info.max_rewind); + + return s; +} + +/* Called from main context */ +static int sink_set_state(pa_sink *s, pa_sink_state_t state) { + int ret; + pa_bool_t suspend_change; + + pa_assert(s); + + if (s->state == state) + return 0; + + suspend_change = + (s->state == PA_SINK_SUSPENDED && PA_SINK_IS_OPENED(state)) || + (PA_SINK_IS_OPENED(s->state) && state == PA_SINK_SUSPENDED); + + if (s->set_state) + if ((ret = s->set_state(s, state)) < 0) + return -1; + + if (s->asyncmsgq) + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) == 0); + + s->state = state; + + if (suspend_change) { + pa_sink_input *i; + uint32_t idx; + + /* We're suspending or resuming, tell everyone about it */ + + for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) + if (i->suspend) + i->suspend(i, state == PA_SINK_SUSPENDED); + } + + if (state != PA_SINK_UNLINKED) /* if we enter UNLINKED state pa_sink_unlink() will fire the apropriate events */ + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], s); + + return 0; +} + +/* Called from main context */ +void pa_sink_put(pa_sink* s) { + pa_sink_assert_ref(s); + + pa_assert(s->state == PA_SINK_INIT); + + /* The following fields must be initialized properly when calling _put() */ + pa_assert(s->asyncmsgq); + pa_assert(s->rtpoll); + pa_assert(!s->thread_info.min_latency || !s->thread_info.max_latency || + s->thread_info.min_latency <= s->thread_info.max_latency); + + if (!(s->flags & PA_SINK_HW_VOLUME_CTRL)) { + s->flags |= PA_SINK_DECIBEL_VOLUME; + + s->thread_info.soft_volume = s->volume; + s->thread_info.soft_muted = s->muted; + } + + pa_assert_se(sink_set_state(s, PA_SINK_IDLE) == 0); + + pa_source_put(s->monitor_source); + + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_NEW, s->index); + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PUT], s); +} + +/* Called from main context */ +void pa_sink_unlink(pa_sink* s) { + pa_bool_t linked; + pa_sink_input *i, *j = NULL; + + pa_assert(s); + + /* Please note that pa_sink_unlink() does more than simply + * reversing pa_sink_put(). It also undoes the registrations + * already done in pa_sink_new()! */ + + /* All operations here shall be idempotent, i.e. pa_sink_unlink() + * may be called multiple times on the same sink without bad + * effects. */ + + linked = PA_SINK_IS_LINKED(s->state); + + if (linked) + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK], s); + + if (s->state != PA_SINK_UNLINKED) + pa_namereg_unregister(s->core, s->name); + pa_idxset_remove_by_data(s->core->sinks, s, NULL); + + while ((i = pa_idxset_first(s->inputs, NULL))) { + pa_assert(i != j); + pa_sink_input_kill(i); + j = i; + } + + if (linked) + sink_set_state(s, PA_SINK_UNLINKED); + else + s->state = PA_SINK_UNLINKED; + + reset_callbacks(s); + + if (s->monitor_source) + pa_source_unlink(s->monitor_source); + + if (linked) { + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_REMOVE, s->index); + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK_POST], s); + } +} + +/* Called from main context */ +static void sink_free(pa_object *o) { + pa_sink *s = PA_SINK(o); + pa_sink_input *i; + + pa_assert(s); + pa_assert(pa_sink_refcnt(s) == 0); + + if (PA_SINK_IS_LINKED(s->state)) + pa_sink_unlink(s); + + pa_log_info("Freeing sink %u \"%s\"", s->index, s->name); + + if (s->monitor_source) { + pa_source_unref(s->monitor_source); + s->monitor_source = NULL; + } + + pa_idxset_free(s->inputs, NULL, NULL); + + while ((i = pa_hashmap_steal_first(s->thread_info.inputs))) + pa_sink_input_unref(i); + + pa_hashmap_free(s->thread_info.inputs, NULL, NULL); + + if (s->silence.memblock) + pa_memblock_unref(s->silence.memblock); + + pa_xfree(s->name); + pa_xfree(s->driver); + + if (s->proplist) + pa_proplist_free(s->proplist); + + pa_xfree(s); +} + +/* Called from main context */ +void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q) { + pa_sink_assert_ref(s); + + s->asyncmsgq = q; + + if (s->monitor_source) + pa_source_set_asyncmsgq(s->monitor_source, q); +} + +/* Called from main context */ +void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p) { + pa_sink_assert_ref(s); + + s->rtpoll = p; + if (s->monitor_source) + pa_source_set_rtpoll(s->monitor_source, p); +} + +/* Called from main context */ +int pa_sink_update_status(pa_sink*s) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + if (s->state == PA_SINK_SUSPENDED) + return 0; + + return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE); +} + +/* Called from main context */ +int pa_sink_suspend(pa_sink *s, pa_bool_t suspend) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + if (suspend) + return sink_set_state(s, PA_SINK_SUSPENDED); + else + return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE); +} + +/* Called from IO thread context */ +void pa_sink_process_rewind(pa_sink *s, size_t nbytes) { + pa_sink_input *i; + void *state = NULL; + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->thread_info.state)); + + /* Make sure the sink code already reset the counter! */ + pa_assert(s->thread_info.rewind_nbytes <= 0); + + if (nbytes <= 0) + return; + + pa_log_debug("Processing rewind..."); + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) { + pa_sink_input_assert_ref(i); + pa_sink_input_process_rewind(i, nbytes); + } + + if (s->monitor_source && PA_SOURCE_IS_OPENED(s->monitor_source->thread_info.state)) + pa_source_process_rewind(s->monitor_source, nbytes); +} + +/* Called from IO thread context */ +static unsigned fill_mix_info(pa_sink *s, size_t *length, pa_mix_info *info, unsigned maxinfo) { + pa_sink_input *i; + unsigned n = 0; + void *state = NULL; + size_t mixlength = *length; + + pa_sink_assert_ref(s); + pa_assert(info); + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)) && maxinfo > 0) { + pa_sink_input_assert_ref(i); + + if (pa_sink_input_peek(i, *length, &info->chunk, &info->volume) < 0) + continue; + + if (mixlength == 0 || info->chunk.length < mixlength) + mixlength = info->chunk.length; + + if (pa_memblock_is_silence(info->chunk.memblock)) { + pa_memblock_unref(info->chunk.memblock); + continue; + } + + info->userdata = pa_sink_input_ref(i); + + pa_assert(info->chunk.memblock); + pa_assert(info->chunk.length > 0); + + info++; + n++; + maxinfo--; + } + + if (mixlength > 0) + *length = mixlength; + + return n; +} + +/* Called from IO thread context */ +static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, pa_memchunk *result) { + pa_sink_input *i; + void *state = NULL; + unsigned p = 0; + unsigned n_unreffed = 0; + + pa_sink_assert_ref(s); + pa_assert(result); + pa_assert(result->memblock); + pa_assert(result->length > 0); + + /* We optimize for the case where the order of the inputs has not changed */ + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) { + unsigned j; + pa_mix_info* m = NULL; + + pa_sink_input_assert_ref(i); + + /* Let's try to find the matching entry info the pa_mix_info array */ + for (j = 0; j < n; j ++) { + + if (info[p].userdata == i) { + m = info + p; + break; + } + + p++; + if (p >= n) + p = 0; + } + + /* Drop read data */ + pa_sink_input_drop(i, result->length); + + if (s->monitor_source && PA_SOURCE_IS_OPENED(pa_source_get_state(s->monitor_source))) { + + if (pa_hashmap_size(i->thread_info.direct_outputs) > 0) { + void *ostate = NULL; + pa_source_output *o; + pa_memchunk c; + + if (m && m->chunk.memblock) { + c = m->chunk; + pa_memblock_ref(c.memblock); + pa_assert(result->length <= c.length); + c.length = result->length; + + pa_memchunk_make_writable(&c, 0); + pa_volume_memchunk(&c, &s->sample_spec, &m->volume); + } else { + c = s->silence; + pa_memblock_ref(c.memblock); + pa_assert(result->length <= c.length); + c.length = result->length; + } + + while ((o = pa_hashmap_iterate(i->thread_info.direct_outputs, &ostate, NULL))) { + pa_source_output_assert_ref(o); + pa_assert(o->direct_on_input == i); + pa_source_post_direct(s->monitor_source, o, &c); + } + + pa_memblock_unref(c.memblock); + } + } + + if (m) { + if (m->chunk.memblock) + pa_memblock_unref(m->chunk.memblock); + pa_memchunk_reset(&m->chunk); + + pa_sink_input_unref(m->userdata); + m->userdata = NULL; + + n_unreffed += 1; + } + } + + /* Now drop references to entries that are included in the + * pa_mix_info array but don't exist anymore */ + + if (n_unreffed < n) { + for (; n > 0; info++, n--) { + if (info->userdata) + pa_sink_input_unref(info->userdata); + if (info->chunk.memblock) + pa_memblock_unref(info->chunk.memblock); + } + } + + if (s->monitor_source && PA_SOURCE_IS_OPENED(pa_source_get_state(s->monitor_source))) + pa_source_post(s->monitor_source, result); +} + +/* Called from IO thread context */ +void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) { + pa_mix_info info[MAX_MIX_CHANNELS]; + unsigned n; + size_t block_size_max; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_OPENED(s->thread_info.state)); + pa_assert(pa_frame_aligned(length, &s->sample_spec)); + pa_assert(result); + + pa_sink_ref(s); + + s->thread_info.rewind_nbytes = 0; + + if (length <= 0) + length = pa_frame_align(MIX_BUFFER_LENGTH, &s->sample_spec); + + block_size_max = pa_mempool_block_size_max(s->core->mempool); + if (length > block_size_max) + length = pa_frame_align(block_size_max, &s->sample_spec); + + pa_assert(length > 0); + + n = s->thread_info.state == PA_SINK_RUNNING ? fill_mix_info(s, &length, info, MAX_MIX_CHANNELS) : 0; + + if (n == 0) { + + *result = s->silence; + pa_memblock_ref(result->memblock); + + if (result->length > length) + result->length = length; + + } else if (n == 1) { + pa_cvolume volume; + + *result = info[0].chunk; + pa_memblock_ref(result->memblock); + + if (result->length > length) + result->length = length; + + pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume); + + if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&volume)) { + pa_log("adjusting volume "); + pa_memchunk_make_writable(result, 0); + if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) + pa_silence_memchunk(result, &s->sample_spec); + else + pa_volume_memchunk(result, &s->sample_spec, &volume); + } + } else { + void *ptr; + result->memblock = pa_memblock_new(s->core->mempool, length); + + ptr = pa_memblock_acquire(result->memblock); + result->length = pa_mix(info, n, + ptr, length, + &s->sample_spec, + &s->thread_info.soft_volume, + s->thread_info.soft_muted); + pa_memblock_release(result->memblock); + + result->index = 0; + } + + if (s->thread_info.state == PA_SINK_RUNNING) + inputs_drop(s, info, n, result); + + pa_sink_unref(s); +} + +/* Called from IO thread context */ +void pa_sink_render_into(pa_sink*s, pa_memchunk *target) { + pa_mix_info info[MAX_MIX_CHANNELS]; + unsigned n; + size_t length, block_size_max; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_OPENED(s->thread_info.state)); + pa_assert(target); + pa_assert(target->memblock); + pa_assert(target->length > 0); + pa_assert(pa_frame_aligned(target->length, &s->sample_spec)); + + pa_sink_ref(s); + + s->thread_info.rewind_nbytes = 0; + + length = target->length; + block_size_max = pa_mempool_block_size_max(s->core->mempool); + if (length > block_size_max) + length = pa_frame_align(block_size_max, &s->sample_spec); + + pa_assert(length > 0); + + n = s->thread_info.state == PA_SINK_RUNNING ? fill_mix_info(s, &length, info, MAX_MIX_CHANNELS) : 0; + + if (n == 0) { + if (target->length > length) + target->length = length; + + pa_silence_memchunk(target, &s->sample_spec); + } else if (n == 1) { + pa_cvolume volume; + + if (target->length > length) + target->length = length; + + pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume); + + if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) + pa_silence_memchunk(target, &s->sample_spec); + else { + pa_memchunk vchunk; + + vchunk = info[0].chunk; + pa_memblock_ref(vchunk.memblock); + + if (vchunk.length > length) + vchunk.length = length; + + if (!pa_cvolume_is_norm(&volume)) { + pa_memchunk_make_writable(&vchunk, 0); + pa_volume_memchunk(&vchunk, &s->sample_spec, &volume); + } + + pa_memchunk_memcpy(target, &vchunk); + pa_memblock_unref(vchunk.memblock); + } + + } else { + void *ptr; + + ptr = pa_memblock_acquire(target->memblock); + + target->length = pa_mix(info, n, + (uint8_t*) ptr + target->index, length, + &s->sample_spec, + &s->thread_info.soft_volume, + s->thread_info.soft_muted); + + pa_memblock_release(target->memblock); + } + + if (s->thread_info.state == PA_SINK_RUNNING) + inputs_drop(s, info, n, target); + + pa_sink_unref(s); +} + +/* Called from IO thread context */ +void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target) { + pa_memchunk chunk; + size_t l, d; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_OPENED(s->thread_info.state)); + pa_assert(target); + pa_assert(target->memblock); + pa_assert(target->length > 0); + pa_assert(pa_frame_aligned(target->length, &s->sample_spec)); + + pa_sink_ref(s); + + s->thread_info.rewind_nbytes = 0; + + l = target->length; + d = 0; + while (l > 0) { + chunk = *target; + chunk.index += d; + chunk.length -= d; + + pa_sink_render_into(s, &chunk); + + d += chunk.length; + l -= chunk.length; + } + + pa_sink_unref(s); +} + +/* Called from IO thread context */ +void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_OPENED(s->thread_info.state)); + pa_assert(length > 0); + pa_assert(pa_frame_aligned(length, &s->sample_spec)); + pa_assert(result); + + s->thread_info.rewind_nbytes = 0; + + /*** This needs optimization ***/ + + result->index = 0; + result->length = length; + result->memblock = pa_memblock_new(s->core->mempool, length); + + pa_sink_render_into_full(s, result); +} + +/* Called from main thread */ +pa_usec_t pa_sink_get_latency(pa_sink *s) { + pa_usec_t usec = 0; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + /* The returned value is supposed to be in the time domain of the sound card! */ + + if (!PA_SINK_IS_OPENED(s->state)) + return 0; + + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0); + + return usec; +} + +/* Called from main thread */ +void pa_sink_set_volume(pa_sink *s, const pa_cvolume *volume) { + pa_bool_t changed; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + pa_assert(volume); + + changed = !pa_cvolume_equal(volume, &s->volume); + s->volume = *volume; + + if (s->set_volume && s->set_volume(s) < 0) + s->set_volume = NULL; + + if (!s->set_volume) + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_VOLUME, volume, 0, NULL); + + if (changed) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); +} + +/* Called from main thread */ +const pa_cvolume *pa_sink_get_volume(pa_sink *s) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + if (s->refresh_volume) { + struct pa_cvolume old_volume = s->volume; + + if (s->get_volume && s->get_volume(s) < 0) + s->get_volume = NULL; + + if (!s->get_volume) + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_VOLUME, &s->volume, 0, NULL); + + if (!pa_cvolume_equal(&old_volume, &s->volume)) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + } + + return &s->volume; +} + +/* Called from main thread */ +void pa_sink_set_mute(pa_sink *s, pa_bool_t mute) { + pa_bool_t changed; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + changed = s->muted != mute; + s->muted = mute; + + if (s->set_mute && s->set_mute(s) < 0) + s->set_mute = NULL; + + if (!s->set_mute) + pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL); + + if (changed) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); +} + +/* Called from main thread */ +pa_bool_t pa_sink_get_mute(pa_sink *s) { + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + if (s->refresh_muted) { + pa_bool_t old_muted = s->muted; + + if (s->get_mute && s->get_mute(s) < 0) + s->get_mute = NULL; + + if (!s->get_mute) + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MUTE, &s->muted, 0, NULL); + + if (old_muted != s->muted) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + } + + return s->muted; +} + +/* Called from main thread */ +void pa_sink_set_description(pa_sink *s, const char *description) { + const char *old; + pa_sink_assert_ref(s); + + if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION)) + return; + + old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION); + + if (old && description && !strcmp(old, description)) + return; + + if (description) + pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description); + else + pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION); + + if (s->monitor_source) { + char *n; + + n = pa_sprintf_malloc("Monitor Source of %s", description ? description : s->name); + pa_source_set_description(s->monitor_source, n); + pa_xfree(n); + } + + if (PA_SINK_IS_LINKED(s->state)) { + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_PROPLIST_CHANGED], s); + } +} + +/* Called from main thread */ +unsigned pa_sink_linked_by(pa_sink *s) { + unsigned ret; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + ret = pa_idxset_size(s->inputs); + + /* We add in the number of streams connected to us here. Please + * not the asymmmetry to pa_sink_used_by()! */ + + if (s->monitor_source) + ret += pa_source_linked_by(s->monitor_source); + + return ret; +} + +/* Called from main thread */ +unsigned pa_sink_used_by(pa_sink *s) { + unsigned ret; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + ret = pa_idxset_size(s->inputs); + pa_assert(ret >= s->n_corked); + + /* Streams connected to our monitor source do not matter for + * pa_sink_used_by()!.*/ + + return ret - s->n_corked; +} + +/* Called from IO thread, except when it is not */ +int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) { + pa_sink *s = PA_SINK(o); + pa_sink_assert_ref(s); + + switch ((pa_sink_message_t) code) { + + case PA_SINK_MESSAGE_ADD_INPUT: { + pa_sink_input *i = PA_SINK_INPUT(userdata); + + /* If you change anything here, make sure to change the + * sink input handling a few lines down at + * PA_SINK_MESSAGE_FINISH_MOVE, too. */ + + pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i)); + + /* Since the caller sleeps in pa_sink_input_put(), we can + * safely access data outside of thread_info even though + * it is mutable */ + + if ((i->thread_info.sync_prev = i->sync_prev)) { + pa_assert(i->sink == i->thread_info.sync_prev->sink); + pa_assert(i->sync_prev->sync_next == i); + i->thread_info.sync_prev->thread_info.sync_next = i; + } + + if ((i->thread_info.sync_next = i->sync_next)) { + pa_assert(i->sink == i->thread_info.sync_next->sink); + pa_assert(i->sync_next->sync_prev == i); + i->thread_info.sync_next->thread_info.sync_prev = i; + } + + pa_assert(!i->thread_info.attached); + i->thread_info.attached = TRUE; + + if (i->attach) + i->attach(i); + + pa_sink_input_set_state_within_thread(i, i->state); + + pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind); + pa_sink_input_update_max_request(i, s->thread_info.max_request); + + pa_sink_invalidate_requested_latency(s); + + /* We don't rewind here automatically. This is left to the + * sink input implementor because some sink inputs need a + * slow start, i.e. need some time to buffer client + * samples before beginning streaming. */ + + return 0; + } + + case PA_SINK_MESSAGE_REMOVE_INPUT: { + pa_sink_input *i = PA_SINK_INPUT(userdata); + + /* If you change anything here, make sure to change the + * sink input handling a few lines down at + * PA_SINK_MESSAGE_PREPAPRE_MOVE, too. */ + + if (i->detach) + i->detach(i); + + pa_sink_input_set_state_within_thread(i, i->state); + + pa_assert(i->thread_info.attached); + i->thread_info.attached = FALSE; + + /* Since the caller sleeps in pa_sink_input_unlink(), + * we can safely access data outside of thread_info even + * though it is mutable */ + + pa_assert(!i->thread_info.sync_prev); + pa_assert(!i->thread_info.sync_next); + + if (i->thread_info.sync_prev) { + i->thread_info.sync_prev->thread_info.sync_next = i->thread_info.sync_prev->sync_next; + i->thread_info.sync_prev = NULL; + } + + if (i->thread_info.sync_next) { + i->thread_info.sync_next->thread_info.sync_prev = i->thread_info.sync_next->sync_prev; + i->thread_info.sync_next = NULL; + } + + if (pa_hashmap_remove(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index))) + pa_sink_input_unref(i); + + pa_sink_invalidate_requested_latency(s); + pa_sink_request_rewind(s, 0); + + return 0; + } + + case PA_SINK_MESSAGE_START_MOVE: { + pa_sink_input *i = PA_SINK_INPUT(userdata); + + /* We don't support moving synchronized streams. */ + pa_assert(!i->sync_prev); + pa_assert(!i->sync_next); + pa_assert(!i->thread_info.sync_next); + pa_assert(!i->thread_info.sync_prev); + + if (i->thread_info.state != PA_SINK_INPUT_CORKED) { + pa_usec_t usec = 0; + size_t sink_nbytes, total_nbytes; + + /* Get the latency of the sink */ + if (PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0) + usec = 0; + + sink_nbytes = pa_usec_to_bytes(usec, &s->sample_spec); + total_nbytes = sink_nbytes + pa_memblockq_get_length(i->thread_info.render_memblockq); + + if (total_nbytes > 0) { + i->thread_info.rewrite_nbytes = i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, total_nbytes) : total_nbytes; + i->thread_info.rewrite_flush = TRUE; + pa_sink_input_process_rewind(i, sink_nbytes); + } + } + + if (i->detach) + i->detach(i); + + pa_assert(i->thread_info.attached); + i->thread_info.attached = FALSE; + + /* Let's remove the sink input ...*/ + if (pa_hashmap_remove(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index))) + pa_sink_input_unref(i); + + pa_sink_invalidate_requested_latency(s); + + pa_log_debug("Requesting rewind due to started move"); + pa_sink_request_rewind(s, 0); + + return 0; + } + + case PA_SINK_MESSAGE_FINISH_MOVE: { + pa_sink_input *i = PA_SINK_INPUT(userdata); + + /* We don't support moving synchronized streams. */ + pa_assert(!i->sync_prev); + pa_assert(!i->sync_next); + pa_assert(!i->thread_info.sync_next); + pa_assert(!i->thread_info.sync_prev); + + pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i)); + + pa_assert(!i->thread_info.attached); + i->thread_info.attached = TRUE; + + if (i->attach) + i->attach(i); + + pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind); + pa_sink_input_update_max_request(i, s->thread_info.max_request); + + pa_sink_input_set_requested_latency_within_thread(i, i->thread_info.requested_sink_latency); + + if (i->thread_info.state != PA_SINK_INPUT_CORKED) { + pa_usec_t usec = 0; + size_t nbytes; + + /* Get the latency of the sink */ + if (PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0) + usec = 0; + + nbytes = pa_usec_to_bytes(usec, &s->sample_spec); + + if (nbytes > 0) + pa_sink_input_drop(i, nbytes); + + pa_log_debug("Requesting rewind due to finished move"); + pa_sink_request_rewind(s, nbytes); + } + + return 0; + } + + case PA_SINK_MESSAGE_SET_VOLUME: + s->thread_info.soft_volume = *((pa_cvolume*) userdata); + + pa_sink_request_rewind(s, 0); + return 0; + + case PA_SINK_MESSAGE_SET_MUTE: + s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata); + + pa_sink_request_rewind(s, 0); + return 0; + + case PA_SINK_MESSAGE_GET_VOLUME: + *((pa_cvolume*) userdata) = s->thread_info.soft_volume; + return 0; + + case PA_SINK_MESSAGE_GET_MUTE: + *((pa_bool_t*) userdata) = s->thread_info.soft_muted; + return 0; + + case PA_SINK_MESSAGE_SET_STATE: + + s->thread_info.state = PA_PTR_TO_UINT(userdata); + return 0; + + case PA_SINK_MESSAGE_DETACH: + + /* Detach all streams */ + pa_sink_detach_within_thread(s); + return 0; + + case PA_SINK_MESSAGE_ATTACH: + + /* Reattach all streams */ + pa_sink_attach_within_thread(s); + return 0; + + case PA_SINK_MESSAGE_GET_REQUESTED_LATENCY: { + + pa_usec_t *usec = userdata; + *usec = pa_sink_get_requested_latency_within_thread(s); + + if (*usec == (pa_usec_t) -1) + *usec = s->thread_info.max_latency; + + return 0; + } + + case PA_SINK_MESSAGE_SET_LATENCY_RANGE: { + pa_usec_t *r = userdata; + + pa_sink_update_latency_range(s, r[0], r[1]); + + return 0; + } + + case PA_SINK_MESSAGE_GET_LATENCY_RANGE: { + pa_usec_t *r = userdata; + + r[0] = s->thread_info.min_latency; + r[1] = s->thread_info.max_latency; + + return 0; + } + + case PA_SINK_MESSAGE_GET_MAX_REWIND: + + *((size_t*) userdata) = s->thread_info.max_rewind; + return 0; + + case PA_SINK_MESSAGE_GET_MAX_REQUEST: + + *((size_t*) userdata) = s->thread_info.max_request; + return 0; + + case PA_SINK_MESSAGE_GET_LATENCY: + case PA_SINK_MESSAGE_MAX: + ; + } + + return -1; +} + +/* Called from main thread */ +int pa_sink_suspend_all(pa_core *c, pa_bool_t suspend) { + pa_sink *sink; + uint32_t idx; + int ret = 0; + + pa_core_assert_ref(c); + + for (sink = PA_SINK(pa_idxset_first(c->sinks, &idx)); sink; sink = PA_SINK(pa_idxset_next(c->sinks, &idx))) + ret -= pa_sink_suspend(sink, suspend) < 0; + + return ret; +} + +/* Called from main thread */ +void pa_sink_detach(pa_sink *s) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_DETACH, NULL, 0, NULL) == 0); +} + +/* Called from main thread */ +void pa_sink_attach(pa_sink *s) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_ATTACH, NULL, 0, NULL) == 0); +} + +/* Called from IO thread */ +void pa_sink_detach_within_thread(pa_sink *s) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->thread_info.state)); + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + if (i->detach) + i->detach(i); + + if (s->monitor_source) + pa_source_detach_within_thread(s->monitor_source); +} + +/* Called from IO thread */ +void pa_sink_attach_within_thread(pa_sink *s) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->thread_info.state)); + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + if (i->attach) + i->attach(i); + + if (s->monitor_source) + pa_source_attach_within_thread(s->monitor_source); +} + +/* Called from IO thread */ +void pa_sink_request_rewind(pa_sink*s, size_t nbytes) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->thread_info.state)); + + if (nbytes <= 0) + nbytes = s->thread_info.max_rewind; + + nbytes = PA_MIN(nbytes, s->thread_info.max_rewind); + + if (nbytes <= s->thread_info.rewind_nbytes) + return; + + s->thread_info.rewind_nbytes = nbytes; + + if (s->request_rewind) + s->request_rewind(s); +} + +/* Called from IO thread */ +pa_usec_t pa_sink_get_requested_latency_within_thread(pa_sink *s) { + pa_usec_t result = (pa_usec_t) -1; + pa_sink_input *i; + void *state = NULL; + pa_usec_t monitor_latency; + + pa_sink_assert_ref(s); + + if (s->thread_info.requested_latency_valid) + return s->thread_info.requested_latency; + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + + if (i->thread_info.requested_sink_latency != (pa_usec_t) -1 && + (result == (pa_usec_t) -1 || result > i->thread_info.requested_sink_latency)) + result = i->thread_info.requested_sink_latency; + + monitor_latency = pa_source_get_requested_latency_within_thread(s->monitor_source); + + if (monitor_latency != (pa_usec_t) -1 && + (result == (pa_usec_t) -1 || result > monitor_latency)) + result = monitor_latency; + + if (result != (pa_usec_t) -1) { + if (s->thread_info.max_latency > 0 && result > s->thread_info.max_latency) + result = s->thread_info.max_latency; + + if (s->thread_info.min_latency > 0 && result < s->thread_info.min_latency) + result = s->thread_info.min_latency; + } + + s->thread_info.requested_latency = result; + s->thread_info.requested_latency_valid = TRUE; + + return result; +} + +/* Called from main thread */ +pa_usec_t pa_sink_get_requested_latency(pa_sink *s) { + pa_usec_t usec = 0; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_IS_LINKED(s->state)); + + if (!PA_SINK_IS_OPENED(s->state)) + return 0; + + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0); + return usec; +} + +/* Called from IO thread */ +void pa_sink_set_max_rewind(pa_sink *s, size_t max_rewind) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + + if (max_rewind == s->thread_info.max_rewind) + return; + + s->thread_info.max_rewind = max_rewind; + + if (PA_SINK_IS_LINKED(s->thread_info.state)) { + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + pa_sink_input_update_max_rewind(i, s->thread_info.max_rewind); + } + + if (s->monitor_source) + pa_source_set_max_rewind(s->monitor_source, s->thread_info.max_rewind); +} + +/* Called from IO thread */ +void pa_sink_set_max_request(pa_sink *s, size_t max_request) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + + if (max_request == s->thread_info.max_request) + return; + + s->thread_info.max_request = max_request; + + if (PA_SINK_IS_LINKED(s->thread_info.state)) { + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + pa_sink_input_update_max_request(i, s->thread_info.max_request); + } +} + +/* Called from IO thread */ +void pa_sink_invalidate_requested_latency(pa_sink *s) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + + s->thread_info.requested_latency_valid = FALSE; + + if (s->update_requested_latency) + s->update_requested_latency(s); + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + if (i->update_sink_requested_latency) + i->update_sink_requested_latency(i); +} + +/* Called from main thread */ +void pa_sink_set_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) { + pa_sink_assert_ref(s); + + /* min_latency == 0: no limit + * min_latency == (size_t) -1: default limit + * min_latency anything else: specified limit + * + * Similar for max_latency */ + + if (min_latency == (pa_usec_t) -1) + min_latency = DEFAULT_MIN_LATENCY; + + if (max_latency == (pa_usec_t) -1) + max_latency = min_latency; + + pa_assert(!min_latency || !max_latency || + min_latency <= max_latency); + + if (PA_SINK_IS_LINKED(s->state)) { + pa_usec_t r[2]; + + r[0] = min_latency; + r[1] = max_latency; + + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0); + } else { + s->thread_info.min_latency = min_latency; + s->thread_info.max_latency = max_latency; + + s->monitor_source->thread_info.min_latency = min_latency; + s->monitor_source->thread_info.max_latency = max_latency; + + s->thread_info.requested_latency_valid = s->monitor_source->thread_info.requested_latency_valid = FALSE; + } +} + +/* Called from main thread */ +void pa_sink_get_latency_range(pa_sink *s, pa_usec_t *min_latency, pa_usec_t *max_latency) { + pa_sink_assert_ref(s); + pa_assert(min_latency); + pa_assert(max_latency); + + if (PA_SINK_IS_LINKED(s->state)) { + pa_usec_t r[2] = { 0, 0 }; + + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0); + + *min_latency = r[0]; + *max_latency = r[1]; + } else { + *min_latency = s->thread_info.min_latency; + *max_latency = s->thread_info.max_latency; + } +} + +/* Called from IO thread */ +void pa_sink_update_latency_range(pa_sink *s, pa_usec_t min_latency, pa_usec_t max_latency) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + + s->thread_info.min_latency = min_latency; + s->thread_info.max_latency = max_latency; + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + if (i->update_sink_latency_range) + i->update_sink_latency_range(i); + + pa_sink_invalidate_requested_latency(s); + + pa_source_update_latency_range(s->monitor_source, min_latency, max_latency); +} + +size_t pa_sink_get_max_rewind(pa_sink *s) { + size_t r; + pa_sink_assert_ref(s); + + if (!PA_SINK_IS_LINKED(s->state)) + return s->thread_info.max_rewind; + + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0); + + return r; +} + +size_t pa_sink_get_max_request(pa_sink *s) { + size_t r; + pa_sink_assert_ref(s); + + if (!PA_SINK_IS_LINKED(s->state)) + return s->thread_info.max_request; + + pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MAX_REQUEST, &r, 0, NULL) == 0); + + return r; +} |