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pulseaudio/src/pulsecore/source.c
Tanu Kaskinen acc8052ed8 sink, source: Fix inaccurate log message 
The stream moving is done also when the active port changes to
unavailable, not only when the device is unlinked like the old log
message suggests.
2020-02-05 10:04:23 +02:00

3038 lines
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/***
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 2.1 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, see <http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <pulse/format.h>
#include <pulse/utf8.h>
#include <pulse/xmalloc.h>
#include <pulse/timeval.h>
#include <pulse/util.h>
#include <pulse/rtclock.h>
#include <pulse/internal.h>
#include <pulsecore/core-util.h>
#include <pulsecore/source-output.h>
#include <pulsecore/namereg.h>
#include <pulsecore/core-subscribe.h>
#include <pulsecore/log.h>
#include <pulsecore/mix.h>
#include <pulsecore/flist.h>
#include "source.h"
#define ABSOLUTE_MIN_LATENCY (500)
#define ABSOLUTE_MAX_LATENCY (10*PA_USEC_PER_SEC)
#define DEFAULT_FIXED_LATENCY (250*PA_USEC_PER_MSEC)
PA_DEFINE_PUBLIC_CLASS(pa_source, pa_msgobject);
struct pa_source_volume_change {
pa_usec_t at;
pa_cvolume hw_volume;
PA_LLIST_FIELDS(pa_source_volume_change);
};
struct set_state_data {
pa_source_state_t state;
pa_suspend_cause_t suspend_cause;
};
static void source_free(pa_object *o);
static void pa_source_volume_change_push(pa_source *s);
static void pa_source_volume_change_flush(pa_source *s);
pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
pa_assert(data);
pa_zero(*data);
data->proplist = pa_proplist_new();
data->ports = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) pa_device_port_unref);
return data;
}
void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
pa_assert(data);
pa_xfree(data->name);
data->name = pa_xstrdup(name);
}
void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
pa_assert(data);
if ((data->sample_spec_is_set = !!spec))
data->sample_spec = *spec;
}
void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
pa_assert(data);
if ((data->channel_map_is_set = !!map))
data->channel_map = *map;
}
void pa_source_new_data_set_alternate_sample_rate(pa_source_new_data *data, const uint32_t alternate_sample_rate) {
pa_assert(data);
data->alternate_sample_rate_is_set = true;
data->alternate_sample_rate = alternate_sample_rate;
}
void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
pa_assert(data);
if ((data->volume_is_set = !!volume))
data->volume = *volume;
}
void pa_source_new_data_set_muted(pa_source_new_data *data, bool mute) {
pa_assert(data);
data->muted_is_set = true;
data->muted = mute;
}
void pa_source_new_data_set_port(pa_source_new_data *data, const char *port) {
pa_assert(data);
pa_xfree(data->active_port);
data->active_port = pa_xstrdup(port);
}
void pa_source_new_data_done(pa_source_new_data *data) {
pa_assert(data);
pa_proplist_free(data->proplist);
if (data->ports)
pa_hashmap_free(data->ports);
pa_xfree(data->name);
pa_xfree(data->active_port);
}
/* Called from main context */
static void reset_callbacks(pa_source *s) {
pa_assert(s);
s->set_state_in_main_thread = NULL;
s->set_state_in_io_thread = NULL;
s->get_volume = NULL;
s->set_volume = NULL;
s->write_volume = NULL;
s->get_mute = NULL;
s->set_mute = NULL;
s->update_requested_latency = NULL;
s->set_port = NULL;
s->get_formats = NULL;
s->reconfigure = NULL;
}
/* Called from main context */
pa_source* pa_source_new(
pa_core *core,
pa_source_new_data *data,
pa_source_flags_t flags) {
pa_source *s;
const char *name;
char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
char *pt;
pa_assert(core);
pa_assert(data);
pa_assert(data->name);
pa_assert_ctl_context();
s = pa_msgobject_new(pa_source);
if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
pa_log_debug("Failed to register name %s.", data->name);
pa_xfree(s);
return NULL;
}
pa_source_new_data_set_name(data, name);
if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
pa_xfree(s);
pa_namereg_unregister(core, name);
return NULL;
}
/* FIXME, need to free s here on failure */
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);
/* FIXME: There should probably be a general function for checking whether
* the source volume is allowed to be set, like there is for source outputs. */
pa_assert(!data->volume_is_set || !(flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
if (!data->volume_is_set) {
pa_cvolume_reset(&data->volume, data->sample_spec.channels);
data->save_volume = false;
}
pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
pa_return_null_if_fail(pa_cvolume_compatible(&data->volume, &data->sample_spec));
if (!data->muted_is_set)
data->muted = false;
if (data->card)
pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->card->proplist);
pa_device_init_description(data->proplist, data->card);
pa_device_init_icon(data->proplist, false);
pa_device_init_intended_roles(data->proplist);
if (!data->active_port) {
pa_device_port *p = pa_device_port_find_best(data->ports);
if (p)
pa_source_new_data_set_port(data, p->name);
}
if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
pa_xfree(s);
pa_namereg_unregister(core, name);
return NULL;
}
s->parent.parent.free = source_free;
s->parent.process_msg = pa_source_process_msg;
s->core = core;
s->state = PA_SOURCE_INIT;
s->flags = flags;
s->priority = 0;
s->suspend_cause = data->suspend_cause;
s->name = pa_xstrdup(name);
s->proplist = pa_proplist_copy(data->proplist);
s->driver = pa_xstrdup(pa_path_get_filename(data->driver));
s->module = data->module;
s->card = data->card;
s->priority = pa_device_init_priority(s->proplist);
s->sample_spec = data->sample_spec;
s->channel_map = data->channel_map;
s->default_sample_rate = s->sample_spec.rate;
if (data->alternate_sample_rate_is_set)
s->alternate_sample_rate = data->alternate_sample_rate;
else
s->alternate_sample_rate = s->core->alternate_sample_rate;
s->avoid_resampling = data->avoid_resampling;
s->outputs = pa_idxset_new(NULL, NULL);
s->n_corked = 0;
s->monitor_of = NULL;
s->output_from_master = NULL;
s->reference_volume = s->real_volume = data->volume;
pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
s->base_volume = PA_VOLUME_NORM;
s->n_volume_steps = PA_VOLUME_NORM+1;
s->muted = data->muted;
s->refresh_volume = s->refresh_muted = false;
reset_callbacks(s);
s->userdata = NULL;
s->asyncmsgq = NULL;
/* As a minor optimization we just steal the list instead of
* copying it here */
s->ports = data->ports;
data->ports = NULL;
s->active_port = NULL;
s->save_port = false;
if (data->active_port)
if ((s->active_port = pa_hashmap_get(s->ports, data->active_port)))
s->save_port = data->save_port;
/* Hopefully the active port has already been assigned in the previous call
to pa_device_port_find_best, but better safe than sorry */
if (!s->active_port)
s->active_port = pa_device_port_find_best(s->ports);
if (s->active_port)
s->port_latency_offset = s->active_port->latency_offset;
else
s->port_latency_offset = 0;
s->save_volume = data->save_volume;
s->save_muted = data->save_muted;
pa_silence_memchunk_get(
&core->silence_cache,
core->mempool,
&s->silence,
&s->sample_spec,
0);
s->thread_info.rtpoll = NULL;
s->thread_info.outputs = pa_hashmap_new_full(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func, NULL,
(pa_free_cb_t) pa_source_output_unref);
s->thread_info.soft_volume = s->soft_volume;
s->thread_info.soft_muted = s->muted;
s->thread_info.state = s->state;
s->thread_info.max_rewind = 0;
s->thread_info.requested_latency_valid = false;
s->thread_info.requested_latency = 0;
s->thread_info.min_latency = ABSOLUTE_MIN_LATENCY;
s->thread_info.max_latency = ABSOLUTE_MAX_LATENCY;
s->thread_info.fixed_latency = flags & PA_SOURCE_DYNAMIC_LATENCY ? 0 : DEFAULT_FIXED_LATENCY;
PA_LLIST_HEAD_INIT(pa_source_volume_change, s->thread_info.volume_changes);
s->thread_info.volume_changes_tail = NULL;
pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
s->thread_info.volume_change_safety_margin = core->deferred_volume_safety_margin_usec;
s->thread_info.volume_change_extra_delay = core->deferred_volume_extra_delay_usec;
s->thread_info.port_latency_offset = s->port_latency_offset;
/* FIXME: This should probably be moved to pa_source_put() */
pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
if (s->card)
pa_assert_se(pa_idxset_put(s->card->sources, s, NULL) >= 0);
pt = pa_proplist_to_string_sep(s->proplist, "\n ");
pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s\n %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),
pt);
pa_xfree(pt);
return s;
}
/* Called from main context */
static int source_set_state(pa_source *s, pa_source_state_t state, pa_suspend_cause_t suspend_cause) {
int ret = 0;
bool state_changed;
bool suspend_cause_changed;
bool suspending;
bool resuming;
pa_source_state_t old_state;
pa_suspend_cause_t old_suspend_cause;
pa_assert(s);
pa_assert_ctl_context();
state_changed = state != s->state;
suspend_cause_changed = suspend_cause != s->suspend_cause;
if (!state_changed && !suspend_cause_changed)
return 0;
suspending = PA_SOURCE_IS_OPENED(s->state) && state == PA_SOURCE_SUSPENDED;
resuming = s->state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state);
/* If we are resuming, suspend_cause must be 0. */
pa_assert(!resuming || !suspend_cause);
/* Here's something to think about: what to do with the suspend cause if
* resuming the source fails? The old suspend cause will be incorrect, so we
* can't use that. On the other hand, if we set no suspend cause (as is the
* case currently), then it looks strange to have a source suspended without
* any cause. It might be a good idea to add a new "resume failed" suspend
* cause, or it might just add unnecessary complexity, given that the
* current approach of not setting any suspend cause works well enough. */
if (s->set_state_in_main_thread) {
if ((ret = s->set_state_in_main_thread(s, state, suspend_cause)) < 0) {
/* set_state_in_main_thread() is allowed to fail only when resuming. */
pa_assert(resuming);
/* If resuming fails, we set the state to SUSPENDED and
* suspend_cause to 0. */
state = PA_SOURCE_SUSPENDED;
suspend_cause = 0;
state_changed = false;
suspend_cause_changed = suspend_cause != s->suspend_cause;
resuming = false;
/* We know the state isn't changing. If the suspend cause isn't
* changing either, then there's nothing more to do. */
if (!suspend_cause_changed)
return ret;
}
}
if (s->asyncmsgq) {
struct set_state_data data = { .state = state, .suspend_cause = suspend_cause };
if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, &data, 0, NULL)) < 0) {
/* SET_STATE is allowed to fail only when resuming. */
pa_assert(resuming);
if (s->set_state_in_main_thread)
s->set_state_in_main_thread(s, PA_SOURCE_SUSPENDED, 0);
/* If resuming fails, we set the state to SUSPENDED and
* suspend_cause to 0. */
state = PA_SOURCE_SUSPENDED;
suspend_cause = 0;
state_changed = false;
suspend_cause_changed = suspend_cause != s->suspend_cause;
resuming = false;
/* We know the state isn't changing. If the suspend cause isn't
* changing either, then there's nothing more to do. */
if (!suspend_cause_changed)
return ret;
}
}
old_suspend_cause = s->suspend_cause;
if (suspend_cause_changed) {
char old_cause_buf[PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE];
char new_cause_buf[PA_SUSPEND_CAUSE_TO_STRING_BUF_SIZE];
pa_log_debug("%s: suspend_cause: %s -> %s", s->name, pa_suspend_cause_to_string(s->suspend_cause, old_cause_buf),
pa_suspend_cause_to_string(suspend_cause, new_cause_buf));
s->suspend_cause = suspend_cause;
}
old_state = s->state;
if (state_changed) {
pa_log_debug("%s: state: %s -> %s", s->name, pa_source_state_to_string(s->state), pa_source_state_to_string(state));
s->state = state;
/* If we enter UNLINKED state, then we don't send change notifications.
* pa_source_unlink() will send unlink notifications instead. */
if (state != PA_SOURCE_UNLINKED) {
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s);
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
}
if (suspending || resuming || suspend_cause_changed) {
pa_source_output *o;
uint32_t idx;
/* We're suspending or resuming, tell everyone about it */
PA_IDXSET_FOREACH(o, s->outputs, idx)
if (s->state == PA_SOURCE_SUSPENDED &&
(o->flags & PA_SOURCE_OUTPUT_KILL_ON_SUSPEND))
pa_source_output_kill(o);
else if (o->suspend)
o->suspend(o, old_state, old_suspend_cause);
}
return ret;
}
void pa_source_set_get_volume_callback(pa_source *s, pa_source_cb_t cb) {
pa_assert(s);
s->get_volume = cb;
}
void pa_source_set_set_volume_callback(pa_source *s, pa_source_cb_t cb) {
pa_source_flags_t flags;
pa_assert(s);
pa_assert(!s->write_volume || cb);
s->set_volume = cb;
/* Save the current flags so we can tell if they've changed */
flags = s->flags;
if (cb) {
/* The source implementor is responsible for setting decibel volume support */
s->flags |= PA_SOURCE_HW_VOLUME_CTRL;
} else {
s->flags &= ~PA_SOURCE_HW_VOLUME_CTRL;
/* See note below in pa_source_put() about volume sharing and decibel volumes */
pa_source_enable_decibel_volume(s, !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
}
/* If the flags have changed after init, let any clients know via a change event */
if (s->state != PA_SOURCE_INIT && flags != s->flags)
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
void pa_source_set_write_volume_callback(pa_source *s, pa_source_cb_t cb) {
pa_source_flags_t flags;
pa_assert(s);
pa_assert(!cb || s->set_volume);
s->write_volume = cb;
/* Save the current flags so we can tell if they've changed */
flags = s->flags;
if (cb)
s->flags |= PA_SOURCE_DEFERRED_VOLUME;
else
s->flags &= ~PA_SOURCE_DEFERRED_VOLUME;
/* If the flags have changed after init, let any clients know via a change event */
if (s->state != PA_SOURCE_INIT && flags != s->flags)
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
void pa_source_set_get_mute_callback(pa_source *s, pa_source_get_mute_cb_t cb) {
pa_assert(s);
s->get_mute = cb;
}
void pa_source_set_set_mute_callback(pa_source *s, pa_source_cb_t cb) {
pa_source_flags_t flags;
pa_assert(s);
s->set_mute = cb;
/* Save the current flags so we can tell if they've changed */
flags = s->flags;
if (cb)
s->flags |= PA_SOURCE_HW_MUTE_CTRL;
else
s->flags &= ~PA_SOURCE_HW_MUTE_CTRL;
/* If the flags have changed after init, let any clients know via a change event */
if (s->state != PA_SOURCE_INIT && flags != s->flags)
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
static void enable_flat_volume(pa_source *s, bool enable) {
pa_source_flags_t flags;
pa_assert(s);
/* Always follow the overall user preference here */
enable = enable && s->core->flat_volumes;
/* Save the current flags so we can tell if they've changed */
flags = s->flags;
if (enable)
s->flags |= PA_SOURCE_FLAT_VOLUME;
else
s->flags &= ~PA_SOURCE_FLAT_VOLUME;
/* If the flags have changed after init, let any clients know via a change event */
if (s->state != PA_SOURCE_INIT && flags != s->flags)
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
void pa_source_enable_decibel_volume(pa_source *s, bool enable) {
pa_source_flags_t flags;
pa_assert(s);
/* Save the current flags so we can tell if they've changed */
flags = s->flags;
if (enable) {
s->flags |= PA_SOURCE_DECIBEL_VOLUME;
enable_flat_volume(s, true);
} else {
s->flags &= ~PA_SOURCE_DECIBEL_VOLUME;
enable_flat_volume(s, false);
}
/* If the flags have changed after init, let any clients know via a change event */
if (s->state != PA_SOURCE_INIT && flags != s->flags)
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
/* Called from main context */
void pa_source_put(pa_source *s) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(s->state == PA_SOURCE_INIT);
pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || pa_source_is_filter(s));
/* The following fields must be initialized properly when calling _put() */
pa_assert(s->asyncmsgq);
pa_assert(s->thread_info.min_latency <= s->thread_info.max_latency);
/* Generally, flags should be initialized via pa_source_new(). As a
* special exception we allow some volume related flags to be set
* between _new() and _put() by the callback setter functions above.
*
* Thus we implement a couple safeguards here which ensure the above
* setters were used (or at least the implementor made manual changes
* in a compatible way).
*
* Note: All of these flags set here can change over the life time
* of the source. */
pa_assert(!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) || s->set_volume);
pa_assert(!(s->flags & PA_SOURCE_DEFERRED_VOLUME) || s->write_volume);
pa_assert(!(s->flags & PA_SOURCE_HW_MUTE_CTRL) || s->set_mute);
/* XXX: Currently decibel volume is disabled for all sources that use volume
* sharing. When the master source supports decibel volume, it would be good
* to have the flag also in the filter source, but currently we don't do that
* so that the flags of the filter source never change when it's moved from
* a master source to another. One solution for this problem would be to
* remove user-visible volume altogether from filter sources when volume
* sharing is used, but the current approach was easier to implement... */
/* We always support decibel volumes in software, otherwise we leave it to
* the source implementor to set this flag as needed.
*
* Note: This flag can also change over the life time of the source. */
if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL) && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
pa_source_enable_decibel_volume(s, true);
s->soft_volume = s->reference_volume;
}
/* If the source implementor support DB volumes by itself, we should always
* try and enable flat volumes too */
if ((s->flags & PA_SOURCE_DECIBEL_VOLUME))
enable_flat_volume(s, true);
if (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) {
pa_source *root_source = pa_source_get_master(s);
pa_assert(PA_LIKELY(root_source));
s->reference_volume = root_source->reference_volume;
pa_cvolume_remap(&s->reference_volume, &root_source->channel_map, &s->channel_map);
s->real_volume = root_source->real_volume;
pa_cvolume_remap(&s->real_volume, &root_source->channel_map, &s->channel_map);
} else
/* We assume that if the sink implementor changed the default
* volume he did so in real_volume, because that is the usual
* place where he is supposed to place his changes. */
s->reference_volume = s->real_volume;
s->thread_info.soft_volume = s->soft_volume;
s->thread_info.soft_muted = s->muted;
pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
pa_assert((s->flags & PA_SOURCE_HW_VOLUME_CTRL)
|| (s->base_volume == PA_VOLUME_NORM
&& ((s->flags & PA_SOURCE_DECIBEL_VOLUME || (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)))));
pa_assert(!(s->flags & PA_SOURCE_DECIBEL_VOLUME) || s->n_volume_steps == PA_VOLUME_NORM+1);
pa_assert(!(s->flags & PA_SOURCE_DYNAMIC_LATENCY) == !(s->thread_info.fixed_latency == 0));
if (s->suspend_cause)
pa_assert_se(source_set_state(s, PA_SOURCE_SUSPENDED, s->suspend_cause) == 0);
else
pa_assert_se(source_set_state(s, PA_SOURCE_IDLE, 0) == 0);
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PUT], s);
/* It's good to fire the SOURCE_PUT hook before updating the default source,
* because module-switch-on-connect will set the new source as the default
* source, and if we were to call pa_core_update_default_source() before that,
* the default source might change twice, causing unnecessary stream moving. */
pa_core_update_default_source(s->core);
pa_core_move_streams_to_newly_available_preferred_source(s->core, s);
}
/* Called from main context */
void pa_source_unlink(pa_source *s) {
bool linked;
pa_source_output *o, PA_UNUSED *j = NULL;
pa_source_assert_ref(s);
pa_assert_ctl_context();
/* See pa_sink_unlink() for a couple of comments how this function
* works. */
if (s->unlink_requested)
return;
s->unlink_requested = true;
linked = PA_SOURCE_IS_LINKED(s->state);
if (linked)
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s);
if (s->state != PA_SOURCE_UNLINKED)
pa_namereg_unregister(s->core, s->name);
pa_idxset_remove_by_data(s->core->sources, s, NULL);
pa_core_update_default_source(s->core);
if (linked && s->core->rescue_streams)
pa_source_move_streams_to_default_source(s->core, s, false);
if (s->card)
pa_idxset_remove_by_data(s->card->sources, s, NULL);
while ((o = pa_idxset_first(s->outputs, NULL))) {
pa_assert(o != j);
pa_source_output_kill(o);
j = o;
}
if (linked)
/* It's important to keep the suspend cause unchanged when unlinking,
* because if we remove the SESSION suspend cause here, the alsa
* source will sync its volume with the hardware while another user is
* active, messing up the volume for that other user. */
source_set_state(s, PA_SOURCE_UNLINKED, s->suspend_cause);
else
s->state = PA_SOURCE_UNLINKED;
reset_callbacks(s);
if (linked) {
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s);
}
}
/* Called from main context */
static void source_free(pa_object *o) {
pa_source *s = PA_SOURCE(o);
pa_assert(s);
pa_assert_ctl_context();
pa_assert(pa_source_refcnt(s) == 0);
pa_assert(!PA_SOURCE_IS_LINKED(s->state));
pa_log_info("Freeing source %u \"%s\"", s->index, s->name);
pa_source_volume_change_flush(s);
pa_idxset_free(s->outputs, NULL);
pa_hashmap_free(s->thread_info.outputs);
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);
if (s->ports)
pa_hashmap_free(s->ports);
pa_xfree(s);
}
/* Called from main context, and not while the IO thread is active, please */
void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
s->asyncmsgq = q;
}
/* Called from main context, and not while the IO thread is active, please */
void pa_source_update_flags(pa_source *s, pa_source_flags_t mask, pa_source_flags_t value) {
pa_source_flags_t old_flags;
pa_source_output *output;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert_ctl_context();
/* For now, allow only a minimal set of flags to be changed. */
pa_assert((mask & ~(PA_SOURCE_DYNAMIC_LATENCY|PA_SOURCE_LATENCY)) == 0);
old_flags = s->flags;
s->flags = (s->flags & ~mask) | (value & mask);
if (s->flags == old_flags)
return;
if ((s->flags & PA_SOURCE_LATENCY) != (old_flags & PA_SOURCE_LATENCY))
pa_log_debug("Source %s: LATENCY flag %s.", s->name, (s->flags & PA_SOURCE_LATENCY) ? "enabled" : "disabled");
if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY) != (old_flags & PA_SOURCE_DYNAMIC_LATENCY))
pa_log_debug("Source %s: DYNAMIC_LATENCY flag %s.",
s->name, (s->flags & PA_SOURCE_DYNAMIC_LATENCY) ? "enabled" : "disabled");
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_FLAGS_CHANGED], s);
PA_IDXSET_FOREACH(output, s->outputs, idx) {
if (output->destination_source)
pa_source_update_flags(output->destination_source, mask, value);
}
}
/* Called from IO context, or before _put() from main context */
void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
s->thread_info.rtpoll = p;
}
/* Called from main context */
int pa_source_update_status(pa_source*s) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
if (s->state == PA_SOURCE_SUSPENDED)
return 0;
return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE, 0);
}
/* Called from main context */
int pa_source_suspend(pa_source *s, bool suspend, pa_suspend_cause_t cause) {
pa_suspend_cause_t merged_cause;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(cause != 0);
if (s->monitor_of && cause != PA_SUSPEND_PASSTHROUGH)
return -PA_ERR_NOTSUPPORTED;
if (suspend)
merged_cause = s->suspend_cause | cause;
else
merged_cause = s->suspend_cause & ~cause;
if (merged_cause)
return source_set_state(s, PA_SOURCE_SUSPENDED, merged_cause);
else
return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE, 0);
}
/* Called from main context */
int pa_source_sync_suspend(pa_source *s) {
pa_sink_state_t state;
pa_suspend_cause_t suspend_cause;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(s->monitor_of);
state = s->monitor_of->state;
suspend_cause = s->monitor_of->suspend_cause;
/* The monitor source usually has the same state and suspend cause as the
* sink, the only exception is when the monitor source is suspended due to
* the sink being in the passthrough mode. If the monitor currently has the
* PASSTHROUGH suspend cause, then we have to keep the monitor suspended
* even if the sink is running. */
if (s->suspend_cause & PA_SUSPEND_PASSTHROUGH)
suspend_cause |= PA_SUSPEND_PASSTHROUGH;
if (state == PA_SINK_SUSPENDED || suspend_cause)
return source_set_state(s, PA_SOURCE_SUSPENDED, suspend_cause);
pa_assert(PA_SINK_IS_OPENED(state));
return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE, 0);
}
/* Called from main context */
pa_queue *pa_source_move_all_start(pa_source *s, pa_queue *q) {
pa_source_output *o, *n;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
if (!q)
q = pa_queue_new();
for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = n) {
n = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx));
pa_source_output_ref(o);
if (pa_source_output_start_move(o) >= 0)
pa_queue_push(q, o);
else
pa_source_output_unref(o);
}
return q;
}
/* Called from main context */
void pa_source_move_all_finish(pa_source *s, pa_queue *q, bool save) {
pa_source_output *o;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(q);
while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
if (pa_source_output_finish_move(o, s, save) < 0)
pa_source_output_fail_move(o);
}
pa_source_output_unref(o);
}
pa_queue_free(q, NULL);
}
/* Called from main context */
void pa_source_move_all_fail(pa_queue *q) {
pa_source_output *o;
pa_assert_ctl_context();
pa_assert(q);
while ((o = PA_SOURCE_OUTPUT(pa_queue_pop(q)))) {
pa_source_output_fail_move(o);
pa_source_output_unref(o);
}
pa_queue_free(q, NULL);
}
/* Called from IO thread context */
void pa_source_process_rewind(pa_source *s, size_t nbytes) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
if (nbytes <= 0)
return;
if (s->thread_info.state == PA_SOURCE_SUSPENDED)
return;
pa_log_debug("Processing rewind...");
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
pa_source_output_assert_ref(o);
pa_source_output_process_rewind(o, nbytes);
}
}
/* Called from IO thread context */
void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
pa_assert(chunk);
if (s->thread_info.state == PA_SOURCE_SUSPENDED)
return;
if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
pa_memchunk vchunk = *chunk;
pa_memblock_ref(vchunk.memblock);
pa_memchunk_make_writable(&vchunk, 0);
if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
pa_silence_memchunk(&vchunk, &s->sample_spec);
else
pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
pa_source_output_assert_ref(o);
if (!o->thread_info.direct_on_input)
pa_source_output_push(o, &vchunk);
}
pa_memblock_unref(vchunk.memblock);
} else {
while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
pa_source_output_assert_ref(o);
if (!o->thread_info.direct_on_input)
pa_source_output_push(o, chunk);
}
}
}
/* Called from IO thread context */
void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
pa_source_output_assert_ref(o);
pa_assert(o->thread_info.direct_on_input);
pa_assert(chunk);
if (s->thread_info.state == PA_SOURCE_SUSPENDED)
return;
if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) {
pa_memchunk vchunk = *chunk;
pa_memblock_ref(vchunk.memblock);
pa_memchunk_make_writable(&vchunk, 0);
if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume))
pa_silence_memchunk(&vchunk, &s->sample_spec);
else
pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume);
pa_source_output_push(o, &vchunk);
pa_memblock_unref(vchunk.memblock);
} else
pa_source_output_push(o, chunk);
}
/* Called from main thread */
void pa_source_reconfigure(pa_source *s, pa_sample_spec *spec, bool passthrough) {
uint32_t idx;
pa_source_output *o;
pa_sample_spec desired_spec;
uint32_t default_rate = s->default_sample_rate;
uint32_t alternate_rate = s->alternate_sample_rate;
bool default_rate_is_usable = false;
bool alternate_rate_is_usable = false;
bool avoid_resampling = s->avoid_resampling;
if (pa_sample_spec_equal(spec, &s->sample_spec))
return;
if (!s->reconfigure && !s->monitor_of)
return;
if (PA_UNLIKELY(default_rate == alternate_rate && !passthrough && !avoid_resampling)) {
pa_log_debug("Default and alternate sample rates are the same, so there is no point in switching.");
return;
}
if (PA_SOURCE_IS_RUNNING(s->state)) {
pa_log_info("Cannot update sample spec, SOURCE_IS_RUNNING, will keep using %s and %u Hz",
pa_sample_format_to_string(s->sample_spec.format), s->sample_spec.rate);
return;
}
if (s->monitor_of) {
if (PA_SINK_IS_RUNNING(s->monitor_of->state)) {
pa_log_info("Cannot update sample spec, this is a monitor source and the sink is running.");
return;
}
}
if (PA_UNLIKELY(!pa_sample_spec_valid(spec)))
return;
desired_spec = s->sample_spec;
if (passthrough) {
/* We have to try to use the source output format and rate */
desired_spec.format = spec->format;
desired_spec.rate = spec->rate;
} else if (avoid_resampling) {
/* We just try to set the source output's sample rate if it's not too low */
if (spec->rate >= default_rate || spec->rate >= alternate_rate)
desired_spec.rate = spec->rate;
desired_spec.format = spec->format;
} else if (default_rate == spec->rate || alternate_rate == spec->rate) {
/* We can directly try to use this rate */
desired_spec.rate = spec->rate;
}
if (desired_spec.rate != spec->rate) {
/* See if we can pick a rate that results in less resampling effort */
if (default_rate % 11025 == 0 && spec->rate % 11025 == 0)
default_rate_is_usable = true;
if (default_rate % 4000 == 0 && spec->rate % 4000 == 0)
default_rate_is_usable = true;
if (alternate_rate % 11025 == 0 && spec->rate % 11025 == 0)
alternate_rate_is_usable = true;
if (alternate_rate % 4000 == 0 && spec->rate % 4000 == 0)
alternate_rate_is_usable = true;
if (alternate_rate_is_usable && !default_rate_is_usable)
desired_spec.rate = alternate_rate;
else
desired_spec.rate = default_rate;
}
if (pa_sample_spec_equal(&desired_spec, &s->sample_spec) && passthrough == pa_source_is_passthrough(s))
return;
if (!passthrough && pa_source_used_by(s) > 0)
return;
pa_log_debug("Suspending source %s due to changing format, desired format = %s rate = %u",
s->name, pa_sample_format_to_string(desired_spec.format), desired_spec.rate);
pa_source_suspend(s, true, PA_SUSPEND_INTERNAL);
if (s->reconfigure)
s->reconfigure(s, &desired_spec, passthrough);
else {
/* This is a monitor source. */
/* XXX: This code is written with non-passthrough streams in mind. I
* have no idea whether the behaviour with passthrough streams is
* sensible. */
if (!passthrough) {
s->sample_spec = desired_spec;
pa_sink_reconfigure(s->monitor_of, &desired_spec, false);
s->sample_spec = s->monitor_of->sample_spec;
} else
goto unsuspend;
}
PA_IDXSET_FOREACH(o, s->outputs, idx) {
if (o->state == PA_SOURCE_OUTPUT_CORKED)
pa_source_output_update_resampler(o);
}
pa_log_info("Reconfigured successfully");
unsuspend:
pa_source_suspend(s, false, PA_SUSPEND_INTERNAL);
}
/* Called from main thread */
pa_usec_t pa_source_get_latency(pa_source *s) {
int64_t usec;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
if (s->state == PA_SOURCE_SUSPENDED)
return 0;
if (!(s->flags & PA_SOURCE_LATENCY))
return 0;
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
/* The return value is unsigned, so check that the offset can be added to usec without
* underflowing. */
if (-s->port_latency_offset <= usec)
usec += s->port_latency_offset;
else
usec = 0;
return (pa_usec_t)usec;
}
/* Called from IO thread */
int64_t pa_source_get_latency_within_thread(pa_source *s, bool allow_negative) {
int64_t usec = 0;
pa_msgobject *o;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
/* The returned value is supposed to be in the time domain of the sound card! */
if (s->thread_info.state == PA_SOURCE_SUSPENDED)
return 0;
if (!(s->flags & PA_SOURCE_LATENCY))
return 0;
o = PA_MSGOBJECT(s);
/* FIXME: We probably should make this a proper vtable callback instead of going through process_msg() */
o->process_msg(o, PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL);
/* If allow_negative is false, the call should only return positive values, */
usec += s->thread_info.port_latency_offset;
if (!allow_negative && usec < 0)
usec = 0;
return usec;
}
/* Called from the main thread (and also from the IO thread while the main
* thread is waiting).
*
* When a source uses volume sharing, it never has the PA_SOURCE_FLAT_VOLUME flag
* set. Instead, flat volume mode is detected by checking whether the root source
* has the flag set. */
bool pa_source_flat_volume_enabled(pa_source *s) {
pa_source_assert_ref(s);
s = pa_source_get_master(s);
if (PA_LIKELY(s))
return (s->flags & PA_SOURCE_FLAT_VOLUME);
else
return false;
}
/* Called from the main thread (and also from the IO thread while the main
* thread is waiting). */
pa_source *pa_source_get_master(pa_source *s) {
pa_source_assert_ref(s);
while (s && (s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
if (PA_UNLIKELY(!s->output_from_master))
return NULL;
s = s->output_from_master->source;
}
return s;
}
/* Called from main context */
bool pa_source_is_filter(pa_source *s) {
pa_source_assert_ref(s);
return (s->output_from_master != NULL);
}
/* Called from main context */
bool pa_source_is_passthrough(pa_source *s) {
pa_source_assert_ref(s);
/* NB Currently only monitor sources support passthrough mode */
return (s->monitor_of && pa_sink_is_passthrough(s->monitor_of));
}
/* Called from main context */
void pa_source_enter_passthrough(pa_source *s) {
pa_cvolume volume;
/* set the volume to NORM */
s->saved_volume = *pa_source_get_volume(s, true);
s->saved_save_volume = s->save_volume;
pa_cvolume_set(&volume, s->sample_spec.channels, PA_MIN(s->base_volume, PA_VOLUME_NORM));
pa_source_set_volume(s, &volume, true, false);
}
/* Called from main context */
void pa_source_leave_passthrough(pa_source *s) {
/* Restore source volume to what it was before we entered passthrough mode */
pa_source_set_volume(s, &s->saved_volume, true, s->saved_save_volume);
pa_cvolume_init(&s->saved_volume);
s->saved_save_volume = false;
}
/* Called from main context. */
static void compute_reference_ratio(pa_source_output *o) {
unsigned c = 0;
pa_cvolume remapped;
pa_cvolume ratio;
pa_assert(o);
pa_assert(pa_source_flat_volume_enabled(o->source));
/*
* Calculates the reference ratio from the source's reference
* volume. This basically calculates:
*
* o->reference_ratio = o->volume / o->source->reference_volume
*/
remapped = o->source->reference_volume;
pa_cvolume_remap(&remapped, &o->source->channel_map, &o->channel_map);
ratio = o->reference_ratio;
for (c = 0; c < o->sample_spec.channels; c++) {
/* We don't update when the source volume is 0 anyway */
if (remapped.values[c] <= PA_VOLUME_MUTED)
continue;
/* Don't update the reference ratio unless necessary */
if (pa_sw_volume_multiply(
ratio.values[c],
remapped.values[c]) == o->volume.values[c])
continue;
ratio.values[c] = pa_sw_volume_divide(
o->volume.values[c],
remapped.values[c]);
}
pa_source_output_set_reference_ratio(o, &ratio);
}
/* Called from main context. Only called for the root source in volume sharing
* cases, except for internal recursive calls. */
static void compute_reference_ratios(pa_source *s) {
uint32_t idx;
pa_source_output *o;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(pa_source_flat_volume_enabled(s));
PA_IDXSET_FOREACH(o, s->outputs, idx) {
compute_reference_ratio(o);
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
&& PA_SOURCE_IS_LINKED(o->destination_source->state))
compute_reference_ratios(o->destination_source);
}
}
/* Called from main context. Only called for the root source in volume sharing
* cases, except for internal recursive calls. */
static void compute_real_ratios(pa_source *s) {
pa_source_output *o;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(pa_source_flat_volume_enabled(s));
PA_IDXSET_FOREACH(o, s->outputs, idx) {
unsigned c;
pa_cvolume remapped;
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
/* The origin source uses volume sharing, so this input's real ratio
* is handled as a special case - the real ratio must be 0 dB, and
* as a result i->soft_volume must equal i->volume_factor. */
pa_cvolume_reset(&o->real_ratio, o->real_ratio.channels);
o->soft_volume = o->volume_factor;
if (PA_SOURCE_IS_LINKED(o->destination_source->state))
compute_real_ratios(o->destination_source);
continue;
}
/*
* This basically calculates:
*
* i->real_ratio := i->volume / s->real_volume
* i->soft_volume := i->real_ratio * i->volume_factor
*/
remapped = s->real_volume;
pa_cvolume_remap(&remapped, &s->channel_map, &o->channel_map);
o->real_ratio.channels = o->sample_spec.channels;
o->soft_volume.channels = o->sample_spec.channels;
for (c = 0; c < o->sample_spec.channels; c++) {
if (remapped.values[c] <= PA_VOLUME_MUTED) {
/* We leave o->real_ratio untouched */
o->soft_volume.values[c] = PA_VOLUME_MUTED;
continue;
}
/* Don't lose accuracy unless necessary */
if (pa_sw_volume_multiply(
o->real_ratio.values[c],
remapped.values[c]) != o->volume.values[c])
o->real_ratio.values[c] = pa_sw_volume_divide(
o->volume.values[c],
remapped.values[c]);
o->soft_volume.values[c] = pa_sw_volume_multiply(
o->real_ratio.values[c],
o->volume_factor.values[c]);
}
/* We don't copy the soft_volume to the thread_info data
* here. That must be done by the caller */
}
}
static pa_cvolume *cvolume_remap_minimal_impact(
pa_cvolume *v,
const pa_cvolume *template,
const pa_channel_map *from,
const pa_channel_map *to) {
pa_cvolume t;
pa_assert(v);
pa_assert(template);
pa_assert(from);
pa_assert(to);
pa_assert(pa_cvolume_compatible_with_channel_map(v, from));
pa_assert(pa_cvolume_compatible_with_channel_map(template, to));
/* Much like pa_cvolume_remap(), but tries to minimize impact when
* mapping from source output to source volumes:
*
* If template is a possible remapping from v it is used instead
* of remapping anew.
*
* If the channel maps don't match we set an all-channel volume on
* the source to ensure that changing a volume on one stream has no
* effect that cannot be compensated for in another stream that
* does not have the same channel map as the source. */
if (pa_channel_map_equal(from, to))
return v;
t = *template;
if (pa_cvolume_equal(pa_cvolume_remap(&t, to, from), v)) {
*v = *template;
return v;
}
pa_cvolume_set(v, to->channels, pa_cvolume_max(v));
return v;
}
/* Called from main thread. Only called for the root source in volume sharing
* cases, except for internal recursive calls. */
static void get_maximum_output_volume(pa_source *s, pa_cvolume *max_volume, const pa_channel_map *channel_map) {
pa_source_output *o;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert(max_volume);
pa_assert(channel_map);
pa_assert(pa_source_flat_volume_enabled(s));
PA_IDXSET_FOREACH(o, s->outputs, idx) {
pa_cvolume remapped;
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
if (PA_SOURCE_IS_LINKED(o->destination_source->state))
get_maximum_output_volume(o->destination_source, max_volume, channel_map);
/* Ignore this output. The origin source uses volume sharing, so this
* output's volume will be set to be equal to the root source's real
* volume. Obviously this output's current volume must not then
* affect what the root source's real volume will be. */
continue;
}
remapped = o->volume;
cvolume_remap_minimal_impact(&remapped, max_volume, &o->channel_map, channel_map);
pa_cvolume_merge(max_volume, max_volume, &remapped);
}
}
/* Called from main thread. Only called for the root source in volume sharing
* cases, except for internal recursive calls. */
static bool has_outputs(pa_source *s) {
pa_source_output *o;
uint32_t idx;
pa_source_assert_ref(s);
PA_IDXSET_FOREACH(o, s->outputs, idx) {
if (!o->destination_source || !(o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER) || has_outputs(o->destination_source))
return true;
}
return false;
}
/* Called from main thread. Only called for the root source in volume sharing
* cases, except for internal recursive calls. */
static void update_real_volume(pa_source *s, const pa_cvolume *new_volume, pa_channel_map *channel_map) {
pa_source_output *o;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert(new_volume);
pa_assert(channel_map);
s->real_volume = *new_volume;
pa_cvolume_remap(&s->real_volume, channel_map, &s->channel_map);
PA_IDXSET_FOREACH(o, s->outputs, idx) {
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
if (pa_source_flat_volume_enabled(s)) {
pa_cvolume new_output_volume;
/* Follow the root source's real volume. */
new_output_volume = *new_volume;
pa_cvolume_remap(&new_output_volume, channel_map, &o->channel_map);
pa_source_output_set_volume_direct(o, &new_output_volume);
compute_reference_ratio(o);
}
if (PA_SOURCE_IS_LINKED(o->destination_source->state))
update_real_volume(o->destination_source, new_volume, channel_map);
}
}
}
/* Called from main thread. Only called for the root source in shared volume
* cases. */
static void compute_real_volume(pa_source *s) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(pa_source_flat_volume_enabled(s));
pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
/* This determines the maximum volume of all streams and sets
* s->real_volume accordingly. */
if (!has_outputs(s)) {
/* In the special case that we have no source outputs we leave the
* volume unmodified. */
update_real_volume(s, &s->reference_volume, &s->channel_map);
return;
}
pa_cvolume_mute(&s->real_volume, s->channel_map.channels);
/* First let's determine the new maximum volume of all outputs
* connected to this source */
get_maximum_output_volume(s, &s->real_volume, &s->channel_map);
update_real_volume(s, &s->real_volume, &s->channel_map);
/* Then, let's update the real ratios/soft volumes of all outputs
* connected to this source */
compute_real_ratios(s);
}
/* Called from main thread. Only called for the root source in shared volume
* cases, except for internal recursive calls. */
static void propagate_reference_volume(pa_source *s) {
pa_source_output *o;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(pa_source_flat_volume_enabled(s));
/* This is called whenever the source volume changes that is not
* caused by a source output volume change. We need to fix up the
* source output volumes accordingly */
PA_IDXSET_FOREACH(o, s->outputs, idx) {
pa_cvolume new_volume;
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
if (PA_SOURCE_IS_LINKED(o->destination_source->state))
propagate_reference_volume(o->destination_source);
/* Since the origin source uses volume sharing, this output's volume
* needs to be updated to match the root source's real volume, but
* that will be done later in update_real_volume(). */
continue;
}
/* This basically calculates:
*
* o->volume := o->reference_volume * o->reference_ratio */
new_volume = s->reference_volume;
pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
pa_source_output_set_volume_direct(o, &new_volume);
}
}
/* Called from main thread. Only called for the root source in volume sharing
* cases, except for internal recursive calls. The return value indicates
* whether any reference volume actually changed. */
static bool update_reference_volume(pa_source *s, const pa_cvolume *v, const pa_channel_map *channel_map, bool save) {
pa_cvolume volume;
bool reference_volume_changed;
pa_source_output *o;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(v);
pa_assert(channel_map);
pa_assert(pa_cvolume_valid(v));
volume = *v;
pa_cvolume_remap(&volume, channel_map, &s->channel_map);
reference_volume_changed = !pa_cvolume_equal(&volume, &s->reference_volume);
pa_source_set_reference_volume_direct(s, &volume);
s->save_volume = (!reference_volume_changed && s->save_volume) || save;
if (!reference_volume_changed && !(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
/* If the root source's volume doesn't change, then there can't be any
* changes in the other source in the source tree either.
*
* It's probably theoretically possible that even if the root source's
* volume changes slightly, some filter source doesn't change its volume
* due to rounding errors. If that happens, we still want to propagate
* the changed root source volume to the sources connected to the
* intermediate source that didn't change its volume. This theoretical
* possibility is the reason why we have that !(s->flags &
* PA_SOURCE_SHARE_VOLUME_WITH_MASTER) condition. Probably nobody would
* notice even if we returned here false always if
* reference_volume_changed is false. */
return false;
PA_IDXSET_FOREACH(o, s->outputs, idx) {
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
&& PA_SOURCE_IS_LINKED(o->destination_source->state))
update_reference_volume(o->destination_source, v, channel_map, false);
}
return true;
}
/* Called from main thread */
void pa_source_set_volume(
pa_source *s,
const pa_cvolume *volume,
bool send_msg,
bool save) {
pa_cvolume new_reference_volume, root_real_volume;
pa_source *root_source;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(!volume || pa_cvolume_valid(volume));
pa_assert(volume || pa_source_flat_volume_enabled(s));
pa_assert(!volume || volume->channels == 1 || pa_cvolume_compatible(volume, &s->sample_spec));
/* make sure we don't change the volume in PASSTHROUGH mode ...
* ... *except* if we're being invoked to reset the volume to ensure 0 dB gain */
if (pa_source_is_passthrough(s) && (!volume || !pa_cvolume_is_norm(volume))) {
pa_log_warn("Cannot change volume, source is monitor of a PASSTHROUGH sink");
return;
}
/* In case of volume sharing, the volume is set for the root source first,
* from which it's then propagated to the sharing sources. */
root_source = pa_source_get_master(s);
if (PA_UNLIKELY(!root_source))
return;
/* As a special exception we accept mono volumes on all sources --
* even on those with more complex channel maps */
if (volume) {
if (pa_cvolume_compatible(volume, &s->sample_spec))
new_reference_volume = *volume;
else {
new_reference_volume = s->reference_volume;
pa_cvolume_scale(&new_reference_volume, pa_cvolume_max(volume));
}
pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
if (update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save)) {
if (pa_source_flat_volume_enabled(root_source)) {
/* OK, propagate this volume change back to the outputs */
propagate_reference_volume(root_source);
/* And now recalculate the real volume */
compute_real_volume(root_source);
} else
update_real_volume(root_source, &root_source->reference_volume, &root_source->channel_map);
}
} else {
/* If volume is NULL we synchronize the source's real and
* reference volumes with the stream volumes. */
pa_assert(pa_source_flat_volume_enabled(root_source));
/* Ok, let's determine the new real volume */
compute_real_volume(root_source);
/* To propagate the reference volume from the filter to the root source,
* we first take the real volume from the root source and remap it to
* match the filter. Then, we merge in the reference volume from the
* filter on top of this, and remap it back to the root source channel
* count and map */
root_real_volume = root_source->real_volume;
/* First we remap root's real volume to filter channel count and map if needed */
if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
pa_cvolume_remap(&root_real_volume, &root_source->channel_map, &s->channel_map);
/* Then let's 'push' the reference volume if necessary */
pa_cvolume_merge(&new_reference_volume, &s->reference_volume, &root_real_volume);
/* If the source and its root don't have the same number of channels, we need to remap back */
if (s != root_source && !pa_channel_map_equal(&s->channel_map, &root_source->channel_map))
pa_cvolume_remap(&new_reference_volume, &s->channel_map, &root_source->channel_map);
update_reference_volume(root_source, &new_reference_volume, &root_source->channel_map, save);
/* Now that the reference volume is updated, we can update the streams'
* reference ratios. */
compute_reference_ratios(root_source);
}
if (root_source->set_volume) {
/* If we have a function set_volume(), then we do not apply a
* soft volume by default. However, set_volume() is free to
* apply one to root_source->soft_volume */
pa_cvolume_reset(&root_source->soft_volume, root_source->sample_spec.channels);
if (!(root_source->flags & PA_SOURCE_DEFERRED_VOLUME))
root_source->set_volume(root_source);
} else
/* If we have no function set_volume(), then the soft volume
* becomes the real volume */
root_source->soft_volume = root_source->real_volume;
/* This tells the source that soft volume and/or real volume changed */
if (send_msg)
pa_assert_se(pa_asyncmsgq_send(root_source->asyncmsgq, PA_MSGOBJECT(root_source), PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL) == 0);
}
/* Called from the io thread if sync volume is used, otherwise from the main thread.
* Only to be called by source implementor */
void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
pa_source_assert_ref(s);
pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
if (s->flags & PA_SOURCE_DEFERRED_VOLUME)
pa_source_assert_io_context(s);
else
pa_assert_ctl_context();
if (!volume)
pa_cvolume_reset(&s->soft_volume, s->sample_spec.channels);
else
s->soft_volume = *volume;
if (PA_SOURCE_IS_LINKED(s->state) && !(s->flags & PA_SOURCE_DEFERRED_VOLUME))
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, NULL, 0, NULL) == 0);
else
s->thread_info.soft_volume = s->soft_volume;
}
/* Called from the main thread. Only called for the root source in volume sharing
* cases, except for internal recursive calls. */
static void propagate_real_volume(pa_source *s, const pa_cvolume *old_real_volume) {
pa_source_output *o;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert(old_real_volume);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
/* This is called when the hardware's real volume changes due to
* some external event. We copy the real volume into our
* reference volume and then rebuild the stream volumes based on
* i->real_ratio which should stay fixed. */
if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
if (pa_cvolume_equal(old_real_volume, &s->real_volume))
return;
/* 1. Make the real volume the reference volume */
update_reference_volume(s, &s->real_volume, &s->channel_map, true);
}
if (pa_source_flat_volume_enabled(s)) {
PA_IDXSET_FOREACH(o, s->outputs, idx) {
pa_cvolume new_volume;
/* 2. Since the source's reference and real volumes are equal
* now our ratios should be too. */
pa_source_output_set_reference_ratio(o, &o->real_ratio);
/* 3. Recalculate the new stream reference volume based on the
* reference ratio and the sink's reference volume.
*
* This basically calculates:
*
* o->volume = s->reference_volume * o->reference_ratio
*
* This is identical to propagate_reference_volume() */
new_volume = s->reference_volume;
pa_cvolume_remap(&new_volume, &s->channel_map, &o->channel_map);
pa_sw_cvolume_multiply(&new_volume, &new_volume, &o->reference_ratio);
pa_source_output_set_volume_direct(o, &new_volume);
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)
&& PA_SOURCE_IS_LINKED(o->destination_source->state))
propagate_real_volume(o->destination_source, old_real_volume);
}
}
/* Something got changed in the hardware. It probably makes sense
* to save changed hw settings given that hw volume changes not
* triggered by PA are almost certainly done by the user. */
if (!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
s->save_volume = true;
}
/* Called from io thread */
void pa_source_update_volume_and_mute(pa_source *s) {
pa_assert(s);
pa_source_assert_io_context(s);
pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE, NULL, 0, NULL, NULL);
}
/* Called from main thread */
const pa_cvolume *pa_source_get_volume(pa_source *s, bool force_refresh) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
if (s->refresh_volume || force_refresh) {
struct pa_cvolume old_real_volume;
pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
old_real_volume = s->real_volume;
if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume)
s->get_volume(s);
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, NULL, 0, NULL) == 0);
update_real_volume(s, &s->real_volume, &s->channel_map);
propagate_real_volume(s, &old_real_volume);
}
return &s->reference_volume;
}
/* Called from main thread. In volume sharing cases, only the root source may
* call this. */
void pa_source_volume_changed(pa_source *s, const pa_cvolume *new_real_volume) {
pa_cvolume old_real_volume;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
pa_assert(!(s->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER));
/* The source implementor may call this if the volume changed to make sure everyone is notified */
old_real_volume = s->real_volume;
update_real_volume(s, new_real_volume, &s->channel_map);
propagate_real_volume(s, &old_real_volume);
}
/* Called from main thread */
void pa_source_set_mute(pa_source *s, bool mute, bool save) {
bool old_muted;
pa_source_assert_ref(s);
pa_assert_ctl_context();
old_muted = s->muted;
if (mute == old_muted) {
s->save_muted |= save;
return;
}
s->muted = mute;
s->save_muted = save;
if (!(s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->set_mute) {
s->set_mute_in_progress = true;
s->set_mute(s);
s->set_mute_in_progress = false;
}
if (!PA_SOURCE_IS_LINKED(s->state))
return;
pa_log_debug("The mute of source %s changed from %s to %s.", s->name, pa_yes_no(old_muted), pa_yes_no(mute));
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, NULL, 0, NULL) == 0);
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_MUTE_CHANGED], s);
}
/* Called from main thread */
bool pa_source_get_mute(pa_source *s, bool force_refresh) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
if ((s->refresh_muted || force_refresh) && s->get_mute) {
bool mute;
if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &mute, 0, NULL) >= 0)
pa_source_mute_changed(s, mute);
} else {
if (s->get_mute(s, &mute) >= 0)
pa_source_mute_changed(s, mute);
}
}
return s->muted;
}
/* Called from main thread */
void pa_source_mute_changed(pa_source *s, bool new_muted) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
if (s->set_mute_in_progress)
return;
/* pa_source_set_mute() does this same check, so this may appear redundant,
* but we must have this here also, because the save parameter of
* pa_source_set_mute() would otherwise have unintended side effects
* (saving the mute state when it shouldn't be saved). */
if (new_muted == s->muted)
return;
pa_source_set_mute(s, new_muted, true);
}
/* Called from main thread */
bool pa_source_update_proplist(pa_source *s, pa_update_mode_t mode, pa_proplist *p) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
if (p)
pa_proplist_update(s->proplist, mode, p);
if (PA_SOURCE_IS_LINKED(s->state)) {
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
return true;
}
/* Called from main thread */
/* FIXME -- this should be dropped and be merged into pa_source_update_proplist() */
void pa_source_set_description(pa_source *s, const char *description) {
const char *old;
pa_source_assert_ref(s);
pa_assert_ctl_context();
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 && pa_streq(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 (PA_SOURCE_IS_LINKED(s->state)) {
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
}
}
/* Called from main thread */
unsigned pa_source_linked_by(pa_source *s) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
return pa_idxset_size(s->outputs);
}
/* Called from main thread */
unsigned pa_source_used_by(pa_source *s) {
unsigned ret;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
ret = pa_idxset_size(s->outputs);
pa_assert(ret >= s->n_corked);
return ret - s->n_corked;
}
/* Called from main thread */
unsigned pa_source_check_suspend(pa_source *s, pa_source_output *ignore) {
unsigned ret;
pa_source_output *o;
uint32_t idx;
pa_source_assert_ref(s);
pa_assert_ctl_context();
if (!PA_SOURCE_IS_LINKED(s->state))
return 0;
ret = 0;
PA_IDXSET_FOREACH(o, s->outputs, idx) {
if (o == ignore)
continue;
/* We do not assert here. It is perfectly valid for a source output to
* be in the INIT state (i.e. created, marked done but not yet put)
* and we should not care if it's unlinked as it won't contribute
* towards our busy status.
*/
if (!PA_SOURCE_OUTPUT_IS_LINKED(o->state))
continue;
if (o->state == PA_SOURCE_OUTPUT_CORKED)
continue;
if (o->flags & PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND)
continue;
ret ++;
}
return ret;
}
const char *pa_source_state_to_string(pa_source_state_t state) {
switch (state) {
case PA_SOURCE_INIT: return "INIT";
case PA_SOURCE_IDLE: return "IDLE";
case PA_SOURCE_RUNNING: return "RUNNING";
case PA_SOURCE_SUSPENDED: return "SUSPENDED";
case PA_SOURCE_UNLINKED: return "UNLINKED";
case PA_SOURCE_INVALID_STATE: return "INVALID_STATE";
}
pa_assert_not_reached();
}
/* Called from the IO thread */
static void sync_output_volumes_within_thread(pa_source *s) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
if (pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume))
continue;
o->thread_info.soft_volume = o->soft_volume;
//pa_source_output_request_rewind(o, 0, true, false, false);
}
}
/* Called from the IO thread. Only called for the root source in volume sharing
* cases, except for internal recursive calls. */
static void set_shared_volume_within_thread(pa_source *s) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
PA_MSGOBJECT(s)->process_msg(PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED, NULL, 0, NULL);
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state) {
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
set_shared_volume_within_thread(o->destination_source);
}
}
/* Called from IO thread, except when it is not */
int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
pa_source *s = PA_SOURCE(object);
pa_source_assert_ref(s);
switch ((pa_source_message_t) code) {
case PA_SOURCE_MESSAGE_ADD_OUTPUT: {
pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o));
if (o->direct_on_input) {
o->thread_info.direct_on_input = o->direct_on_input;
pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
}
pa_source_output_attach(o);
pa_source_output_set_state_within_thread(o, o->state);
if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
/* We don't just invalidate the requested latency here,
* because if we are in a move we might need to fix up the
* requested latency. */
pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
/* In flat volume mode we need to update the volume as
* well */
return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
}
case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
pa_source_output_set_state_within_thread(o, o->state);
pa_source_output_detach(o);
if (o->thread_info.direct_on_input) {
pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
o->thread_info.direct_on_input = NULL;
}
pa_hashmap_remove_and_free(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index));
pa_source_invalidate_requested_latency(s, true);
/* In flat volume mode we need to update the volume as
* well */
return object->process_msg(object, PA_SOURCE_MESSAGE_SET_SHARED_VOLUME, NULL, 0, NULL);
}
case PA_SOURCE_MESSAGE_SET_SHARED_VOLUME: {
pa_source *root_source = pa_source_get_master(s);
if (PA_LIKELY(root_source))
set_shared_volume_within_thread(root_source);
return 0;
}
case PA_SOURCE_MESSAGE_SET_VOLUME_SYNCED:
if (s->flags & PA_SOURCE_DEFERRED_VOLUME) {
s->set_volume(s);
pa_source_volume_change_push(s);
}
/* Fall through ... */
case PA_SOURCE_MESSAGE_SET_VOLUME:
if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
s->thread_info.soft_volume = s->soft_volume;
}
/* Fall through ... */
case PA_SOURCE_MESSAGE_SYNC_VOLUMES:
sync_output_volumes_within_thread(s);
return 0;
case PA_SOURCE_MESSAGE_GET_VOLUME:
if ((s->flags & PA_SOURCE_DEFERRED_VOLUME) && s->get_volume) {
s->get_volume(s);
pa_source_volume_change_flush(s);
pa_sw_cvolume_divide(&s->thread_info.current_hw_volume, &s->real_volume, &s->soft_volume);
}
/* In case source implementor reset SW volume. */
if (!pa_cvolume_equal(&s->thread_info.soft_volume, &s->soft_volume)) {
s->thread_info.soft_volume = s->soft_volume;
}
return 0;
case PA_SOURCE_MESSAGE_SET_MUTE:
if (s->thread_info.soft_muted != s->muted) {
s->thread_info.soft_muted = s->muted;
}
if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->set_mute)
s->set_mute(s);
return 0;
case PA_SOURCE_MESSAGE_GET_MUTE:
if (s->flags & PA_SOURCE_DEFERRED_VOLUME && s->get_mute)
return s->get_mute(s, userdata);
return 0;
case PA_SOURCE_MESSAGE_SET_STATE: {
struct set_state_data *data = userdata;
bool suspend_change =
(s->thread_info.state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(data->state)) ||
(PA_SOURCE_IS_OPENED(s->thread_info.state) && data->state == PA_SOURCE_SUSPENDED);
if (s->set_state_in_io_thread) {
int r;
if ((r = s->set_state_in_io_thread(s, data->state, data->suspend_cause)) < 0)
return r;
}
s->thread_info.state = data->state;
if (suspend_change) {
pa_source_output *o;
void *state = NULL;
while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
if (o->suspend_within_thread)
o->suspend_within_thread(o, s->thread_info.state == PA_SOURCE_SUSPENDED);
}
return 0;
}
case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
pa_usec_t *usec = userdata;
*usec = pa_source_get_requested_latency_within_thread(s);
/* Yes, that's right, the IO thread will see -1 when no
* explicit requested latency is configured, the main
* thread will see max_latency */
if (*usec == (pa_usec_t) -1)
*usec = s->thread_info.max_latency;
return 0;
}
case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
pa_usec_t *r = userdata;
pa_source_set_latency_range_within_thread(s, r[0], r[1]);
return 0;
}
case PA_SOURCE_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_SOURCE_MESSAGE_GET_FIXED_LATENCY:
*((pa_usec_t*) userdata) = s->thread_info.fixed_latency;
return 0;
case PA_SOURCE_MESSAGE_SET_FIXED_LATENCY:
pa_source_set_fixed_latency_within_thread(s, (pa_usec_t) offset);
return 0;
case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
*((size_t*) userdata) = s->thread_info.max_rewind;
return 0;
case PA_SOURCE_MESSAGE_SET_MAX_REWIND:
pa_source_set_max_rewind_within_thread(s, (size_t) offset);
return 0;
case PA_SOURCE_MESSAGE_GET_LATENCY:
if (s->monitor_of) {
*((int64_t*) userdata) = -pa_sink_get_latency_within_thread(s->monitor_of, true);
return 0;
}
/* Implementors need to overwrite this implementation! */
return -1;
case PA_SOURCE_MESSAGE_UPDATE_VOLUME_AND_MUTE:
/* This message is sent from IO-thread and handled in main thread. */
pa_assert_ctl_context();
/* Make sure we're not messing with main thread when no longer linked */
if (!PA_SOURCE_IS_LINKED(s->state))
return 0;
pa_source_get_volume(s, true);
pa_source_get_mute(s, true);
return 0;
case PA_SOURCE_MESSAGE_SET_PORT_LATENCY_OFFSET:
s->thread_info.port_latency_offset = offset;
return 0;
case PA_SOURCE_MESSAGE_MAX:
;
}
return -1;
}
/* Called from main thread */
int pa_source_suspend_all(pa_core *c, bool suspend, pa_suspend_cause_t cause) {
pa_source *source;
uint32_t idx;
int ret = 0;
pa_core_assert_ref(c);
pa_assert_ctl_context();
pa_assert(cause != 0);
for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) {
int r;
if (source->monitor_of)
continue;
if ((r = pa_source_suspend(source, suspend, cause)) < 0)
ret = r;
}
return ret;
}
/* Called from IO thread */
void pa_source_detach_within_thread(pa_source *s) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
pa_source_output_detach(o);
}
/* Called from IO thread */
void pa_source_attach_within_thread(pa_source *s) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
pa_assert(PA_SOURCE_IS_LINKED(s->thread_info.state));
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
pa_source_output_attach(o);
}
/* Called from IO thread */
pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
pa_usec_t result = (pa_usec_t) -1;
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
if (!(s->flags & PA_SOURCE_DYNAMIC_LATENCY))
return PA_CLAMP(s->thread_info.fixed_latency, s->thread_info.min_latency, s->thread_info.max_latency);
if (s->thread_info.requested_latency_valid)
return s->thread_info.requested_latency;
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
(result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
result = o->thread_info.requested_source_latency;
if (result != (pa_usec_t) -1)
result = PA_CLAMP(result, s->thread_info.min_latency, s->thread_info.max_latency);
if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
/* Only cache this if we are fully set up */
s->thread_info.requested_latency = result;
s->thread_info.requested_latency_valid = true;
}
return result;
}
/* Called from main thread */
pa_usec_t pa_source_get_requested_latency(pa_source *s) {
pa_usec_t usec = 0;
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_IS_LINKED(s->state));
if (s->state == PA_SOURCE_SUSPENDED)
return 0;
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
return usec;
}
/* Called from IO thread */
void pa_source_set_max_rewind_within_thread(pa_source *s, size_t max_rewind) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
if (max_rewind == s->thread_info.max_rewind)
return;
s->thread_info.max_rewind = max_rewind;
if (PA_SOURCE_IS_LINKED(s->thread_info.state))
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
}
/* Called from main thread */
void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
if (PA_SOURCE_IS_LINKED(s->state))
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MAX_REWIND, NULL, max_rewind, NULL) == 0);
else
pa_source_set_max_rewind_within_thread(s, max_rewind);
}
/* Called from IO thread */
void pa_source_invalidate_requested_latency(pa_source *s, bool dynamic) {
pa_source_output *o;
void *state = NULL;
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
if ((s->flags & PA_SOURCE_DYNAMIC_LATENCY))
s->thread_info.requested_latency_valid = false;
else if (dynamic)
return;
if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
if (s->update_requested_latency)
s->update_requested_latency(s);
while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
if (o->update_source_requested_latency)
o->update_source_requested_latency(o);
}
if (s->monitor_of)
pa_sink_invalidate_requested_latency(s->monitor_of, dynamic);
}
/* Called from main thread */
void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
/* min_latency == 0: no limit
* min_latency anything else: specified limit
*
* Similar for max_latency */
if (min_latency < ABSOLUTE_MIN_LATENCY)
min_latency = ABSOLUTE_MIN_LATENCY;
if (max_latency <= 0 ||
max_latency > ABSOLUTE_MAX_LATENCY)
max_latency = ABSOLUTE_MAX_LATENCY;
pa_assert(min_latency <= max_latency);
/* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
max_latency == ABSOLUTE_MAX_LATENCY) ||
(s->flags & PA_SOURCE_DYNAMIC_LATENCY));
if (PA_SOURCE_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_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
} else
pa_source_set_latency_range_within_thread(s, min_latency, max_latency);
}
/* Called from main thread */
void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
pa_assert(min_latency);
pa_assert(max_latency);
if (PA_SOURCE_IS_LINKED(s->state)) {
pa_usec_t r[2] = { 0, 0 };
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_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, and from main thread before pa_source_put() is called */
void pa_source_set_latency_range_within_thread(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
pa_assert(min_latency >= ABSOLUTE_MIN_LATENCY);
pa_assert(max_latency <= ABSOLUTE_MAX_LATENCY);
pa_assert(min_latency <= max_latency);
/* Hmm, let's see if someone forgot to set PA_SOURCE_DYNAMIC_LATENCY here... */
pa_assert((min_latency == ABSOLUTE_MIN_LATENCY &&
max_latency == ABSOLUTE_MAX_LATENCY) ||
(s->flags & PA_SOURCE_DYNAMIC_LATENCY) ||
s->monitor_of);
if (s->thread_info.min_latency == min_latency &&
s->thread_info.max_latency == max_latency)
return;
s->thread_info.min_latency = min_latency;
s->thread_info.max_latency = max_latency;
if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
pa_source_output *o;
void *state = NULL;
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
if (o->update_source_latency_range)
o->update_source_latency_range(o);
}
pa_source_invalidate_requested_latency(s, false);
}
/* Called from main thread, before the source is put */
void pa_source_set_fixed_latency(pa_source *s, pa_usec_t latency) {
pa_source_assert_ref(s);
pa_assert_ctl_context();
if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
pa_assert(latency == 0);
return;
}
if (latency < ABSOLUTE_MIN_LATENCY)
latency = ABSOLUTE_MIN_LATENCY;
if (latency > ABSOLUTE_MAX_LATENCY)
latency = ABSOLUTE_MAX_LATENCY;
if (PA_SOURCE_IS_LINKED(s->state))
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_FIXED_LATENCY, NULL, (int64_t) latency, NULL) == 0);
else
s->thread_info.fixed_latency = latency;
}
/* Called from main thread */
pa_usec_t pa_source_get_fixed_latency(pa_source *s) {
pa_usec_t latency;
pa_source_assert_ref(s);
pa_assert_ctl_context();
if (s->flags & PA_SOURCE_DYNAMIC_LATENCY)
return 0;
if (PA_SOURCE_IS_LINKED(s->state))
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_FIXED_LATENCY, &latency, 0, NULL) == 0);
else
latency = s->thread_info.fixed_latency;
return latency;
}
/* Called from IO thread */
void pa_source_set_fixed_latency_within_thread(pa_source *s, pa_usec_t latency) {
pa_source_assert_ref(s);
pa_source_assert_io_context(s);
if (s->flags & PA_SOURCE_DYNAMIC_LATENCY) {
pa_assert(latency == 0);
s->thread_info.fixed_latency = 0;
return;
}
pa_assert(latency >= ABSOLUTE_MIN_LATENCY);
pa_assert(latency <= ABSOLUTE_MAX_LATENCY);
if (s->thread_info.fixed_latency == latency)
return;
s->thread_info.fixed_latency = latency;
if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
pa_source_output *o;
void *state = NULL;
PA_HASHMAP_FOREACH(o, s->thread_info.outputs, state)
if (o->update_source_fixed_latency)
o->update_source_fixed_latency(o);
}
pa_source_invalidate_requested_latency(s, false);
}
/* Called from main thread */
void pa_source_set_port_latency_offset(pa_source *s, int64_t offset) {
pa_source_assert_ref(s);
s->port_latency_offset = offset;
if (PA_SOURCE_IS_LINKED(s->state))
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_PORT_LATENCY_OFFSET, NULL, offset, NULL) == 0);
else
s->thread_info.port_latency_offset = offset;
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_LATENCY_OFFSET_CHANGED], s);
}
/* Called from main thread */
size_t pa_source_get_max_rewind(pa_source *s) {
size_t r;
pa_assert_ctl_context();
pa_source_assert_ref(s);
if (!PA_SOURCE_IS_LINKED(s->state))
return s->thread_info.max_rewind;
pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
return r;
}
/* Called from main context */
int pa_source_set_port(pa_source *s, const char *name, bool save) {
pa_device_port *port;
pa_source_assert_ref(s);
pa_assert_ctl_context();
if (!s->set_port) {
pa_log_debug("set_port() operation not implemented for source %u \"%s\"", s->index, s->name);
return -PA_ERR_NOTIMPLEMENTED;
}
if (!name)
return -PA_ERR_NOENTITY;
if (!(port = pa_hashmap_get(s->ports, name)))
return -PA_ERR_NOENTITY;
if (s->active_port == port) {
s->save_port = s->save_port || save;
return 0;
}
if (s->set_port(s, port) < 0)
return -PA_ERR_NOENTITY;
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
pa_log_info("Changed port of source %u \"%s\" to %s", s->index, s->name, port->name);
s->active_port = port;
s->save_port = save;
/* The active port affects the default source selection. */
pa_core_update_default_source(s->core);
pa_source_set_port_latency_offset(s, s->active_port->latency_offset);
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PORT_CHANGED], s);
return 0;
}
PA_STATIC_FLIST_DECLARE(pa_source_volume_change, 0, pa_xfree);
/* Called from the IO thread. */
static pa_source_volume_change *pa_source_volume_change_new(pa_source *s) {
pa_source_volume_change *c;
if (!(c = pa_flist_pop(PA_STATIC_FLIST_GET(pa_source_volume_change))))
c = pa_xnew(pa_source_volume_change, 1);
PA_LLIST_INIT(pa_source_volume_change, c);
c->at = 0;
pa_cvolume_reset(&c->hw_volume, s->sample_spec.channels);
return c;
}
/* Called from the IO thread. */
static void pa_source_volume_change_free(pa_source_volume_change *c) {
pa_assert(c);
if (pa_flist_push(PA_STATIC_FLIST_GET(pa_source_volume_change), c) < 0)
pa_xfree(c);
}
/* Called from the IO thread. */
void pa_source_volume_change_push(pa_source *s) {
pa_source_volume_change *c = NULL;
pa_source_volume_change *nc = NULL;
pa_source_volume_change *pc = NULL;
uint32_t safety_margin = s->thread_info.volume_change_safety_margin;
const char *direction = NULL;
pa_assert(s);
nc = pa_source_volume_change_new(s);
/* NOTE: There is already more different volumes in pa_source that I can remember.
* Adding one more volume for HW would get us rid of this, but I am trying
* to survive with the ones we already have. */
pa_sw_cvolume_divide(&nc->hw_volume, &s->real_volume, &s->soft_volume);
if (!s->thread_info.volume_changes && pa_cvolume_equal(&nc->hw_volume, &s->thread_info.current_hw_volume)) {
pa_log_debug("Volume not changing");
pa_source_volume_change_free(nc);
return;
}
nc->at = pa_source_get_latency_within_thread(s, false);
nc->at += pa_rtclock_now() + s->thread_info.volume_change_extra_delay;
if (s->thread_info.volume_changes_tail) {
for (c = s->thread_info.volume_changes_tail; c; c = c->prev) {
/* If volume is going up let's do it a bit late. If it is going
* down let's do it a bit early. */
if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&c->hw_volume)) {
if (nc->at + safety_margin > c->at) {
nc->at += safety_margin;
direction = "up";
break;
}
}
else if (nc->at - safety_margin > c->at) {
nc->at -= safety_margin;
direction = "down";
break;
}
}
}
if (c == NULL) {
if (pa_cvolume_avg(&nc->hw_volume) > pa_cvolume_avg(&s->thread_info.current_hw_volume)) {
nc->at += safety_margin;
direction = "up";
} else {
nc->at -= safety_margin;
direction = "down";
}
PA_LLIST_PREPEND(pa_source_volume_change, s->thread_info.volume_changes, nc);
}
else {
PA_LLIST_INSERT_AFTER(pa_source_volume_change, s->thread_info.volume_changes, c, nc);
}
pa_log_debug("Volume going %s to %d at %llu", direction, pa_cvolume_avg(&nc->hw_volume), (long long unsigned) nc->at);
/* We can ignore volume events that came earlier but should happen later than this. */
PA_LLIST_FOREACH_SAFE(c, pc, nc->next) {
pa_log_debug("Volume change to %d at %llu was dropped", pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at);
pa_source_volume_change_free(c);
}
nc->next = NULL;
s->thread_info.volume_changes_tail = nc;
}
/* Called from the IO thread. */
static void pa_source_volume_change_flush(pa_source *s) {
pa_source_volume_change *c = s->thread_info.volume_changes;
pa_assert(s);
s->thread_info.volume_changes = NULL;
s->thread_info.volume_changes_tail = NULL;
while (c) {
pa_source_volume_change *next = c->next;
pa_source_volume_change_free(c);
c = next;
}
}
/* Called from the IO thread. */
bool pa_source_volume_change_apply(pa_source *s, pa_usec_t *usec_to_next) {
pa_usec_t now;
bool ret = false;
pa_assert(s);
if (!s->thread_info.volume_changes || !PA_SOURCE_IS_LINKED(s->state)) {
if (usec_to_next)
*usec_to_next = 0;
return ret;
}
pa_assert(s->write_volume);
now = pa_rtclock_now();
while (s->thread_info.volume_changes && now >= s->thread_info.volume_changes->at) {
pa_source_volume_change *c = s->thread_info.volume_changes;
PA_LLIST_REMOVE(pa_source_volume_change, s->thread_info.volume_changes, c);
pa_log_debug("Volume change to %d at %llu was written %llu usec late",
pa_cvolume_avg(&c->hw_volume), (long long unsigned) c->at, (long long unsigned) (now - c->at));
ret = true;
s->thread_info.current_hw_volume = c->hw_volume;
pa_source_volume_change_free(c);
}
if (ret)
s->write_volume(s);
if (s->thread_info.volume_changes) {
if (usec_to_next)
*usec_to_next = s->thread_info.volume_changes->at - now;
if (pa_log_ratelimit(PA_LOG_DEBUG))
pa_log_debug("Next volume change in %lld usec", (long long) (s->thread_info.volume_changes->at - now));
}
else {
if (usec_to_next)
*usec_to_next = 0;
s->thread_info.volume_changes_tail = NULL;
}
return ret;
}
/* Called from the main thread */
/* Gets the list of formats supported by the source. The members and idxset must
* be freed by the caller. */
pa_idxset* pa_source_get_formats(pa_source *s) {
pa_idxset *ret;
pa_assert(s);
if (s->get_formats) {
/* Source supports format query, all is good */
ret = s->get_formats(s);
} else {
/* Source doesn't support format query, so assume it does PCM */
pa_format_info *f = pa_format_info_new();
f->encoding = PA_ENCODING_PCM;
ret = pa_idxset_new(NULL, NULL);
pa_idxset_put(ret, f, NULL);
}
return ret;
}
/* Called from the main thread */
/* Checks if the source can accept this format */
bool pa_source_check_format(pa_source *s, pa_format_info *f) {
pa_idxset *formats = NULL;
bool ret = false;
pa_assert(s);
pa_assert(f);
formats = pa_source_get_formats(s);
if (formats) {
pa_format_info *finfo_device;
uint32_t i;
PA_IDXSET_FOREACH(finfo_device, formats, i) {
if (pa_format_info_is_compatible(finfo_device, f)) {
ret = true;
break;
}
}
pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
}
return ret;
}
/* Called from the main thread */
/* Calculates the intersection between formats supported by the source and
* in_formats, and returns these, in the order of the source's formats. */
pa_idxset* pa_source_check_formats(pa_source *s, pa_idxset *in_formats) {
pa_idxset *out_formats = pa_idxset_new(NULL, NULL), *source_formats = NULL;
pa_format_info *f_source, *f_in;
uint32_t i, j;
pa_assert(s);
if (!in_formats || pa_idxset_isempty(in_formats))
goto done;
source_formats = pa_source_get_formats(s);
PA_IDXSET_FOREACH(f_source, source_formats, i) {
PA_IDXSET_FOREACH(f_in, in_formats, j) {
if (pa_format_info_is_compatible(f_source, f_in))
pa_idxset_put(out_formats, pa_format_info_copy(f_in), NULL);
}
}
done:
if (source_formats)
pa_idxset_free(source_formats, (pa_free_cb_t) pa_format_info_free);
return out_formats;
}
/* Called from the main thread */
void pa_source_set_sample_format(pa_source *s, pa_sample_format_t format) {
pa_sample_format_t old_format;
pa_assert(s);
pa_assert(pa_sample_format_valid(format));
old_format = s->sample_spec.format;
if (old_format == format)
return;
pa_log_info("%s: format: %s -> %s",
s->name, pa_sample_format_to_string(old_format), pa_sample_format_to_string(format));
s->sample_spec.format = format;
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
/* Called from the main thread */
void pa_source_set_sample_rate(pa_source *s, uint32_t rate) {
uint32_t old_rate;
pa_assert(s);
pa_assert(pa_sample_rate_valid(rate));
old_rate = s->sample_spec.rate;
if (old_rate == rate)
return;
pa_log_info("%s: rate: %u -> %u", s->name, old_rate, rate);
s->sample_spec.rate = rate;
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
}
/* Called from the main thread. */
void pa_source_set_reference_volume_direct(pa_source *s, const pa_cvolume *volume) {
pa_cvolume old_volume;
char old_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
char new_volume_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
pa_assert(s);
pa_assert(volume);
old_volume = s->reference_volume;
if (pa_cvolume_equal(volume, &old_volume))
return;
s->reference_volume = *volume;
pa_log_debug("The reference volume of source %s changed from %s to %s.", s->name,
pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &s->channel_map,
s->flags & PA_SOURCE_DECIBEL_VOLUME),
pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &s->channel_map,
s->flags & PA_SOURCE_DECIBEL_VOLUME));
pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_VOLUME_CHANGED], s);
}
void pa_source_move_streams_to_default_source(pa_core *core, pa_source *old_source, bool default_source_changed) {
pa_source_output *o;
uint32_t idx;
pa_assert(core);
pa_assert(old_source);
if (core->state == PA_CORE_SHUTDOWN)
return;
if (core->default_source == NULL || core->default_source->unlink_requested)
return;
if (old_source == core->default_source)
return;
PA_IDXSET_FOREACH(o, old_source->outputs, idx) {
if (!PA_SOURCE_OUTPUT_IS_LINKED(o->state))
continue;
if (!o->source)
continue;
/* If default_source_changed is false, the old source became unavailable, so all streams must be moved. */
if (pa_safe_streq(old_source->name, o->preferred_source) && default_source_changed)
continue;
if (!pa_source_output_may_move_to(o, core->default_source))
continue;
if (default_source_changed)
pa_log_info("The source output %u \"%s\" is moving to %s due to change of the default source.",
o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_APPLICATION_NAME)), core->default_source->name);
else
pa_log_info("The source output %u \"%s\" is moving to %s, because the old source became unavailable.",
o->index, pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_APPLICATION_NAME)), core->default_source->name);
pa_source_output_move_to(o, core->default_source, false);
}
}
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