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pulseaudio/src/pulsecore/source-output.c
Georg Chini b6ccb7e76d source: Introduce vsource structure 
This patch introduces a vsource structure analog to the vsink structure.
The structure will be used for virtual source consolidation.
2024-01-13 11:41:25 +01:00

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/***
This file is part of PulseAudio.
Copyright 2004-2006 Lennart Poettering
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 <string.h>
#include <pulse/utf8.h>
#include <pulse/xmalloc.h>
#include <pulse/util.h>
#include <pulse/internal.h>
#include <pulse/timeval.h>
#include <pulsecore/core-format.h>
#include <pulsecore/mix.h>
#include <pulsecore/stream-util.h>
#include <pulsecore/core-subscribe.h>
#include <pulsecore/log.h>
#include <pulsecore/namereg.h>
#include <pulsecore/core-util.h>
#include "source-output.h"
#define MEMBLOCKQ_MAXLENGTH (32*1024*1024)
PA_DEFINE_PUBLIC_CLASS(pa_source_output, pa_msgobject);
static void source_output_free(pa_object* mo);
static void set_real_ratio(pa_source_output *o, const pa_cvolume *v);
pa_source_output_new_data* pa_source_output_new_data_init(pa_source_output_new_data *data) {
pa_assert(data);
pa_zero(*data);
data->resample_method = PA_RESAMPLER_INVALID;
data->proplist = pa_proplist_new();
data->volume_writable = true;
return data;
}
void pa_source_output_new_data_set_sample_spec(pa_source_output_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_output_new_data_set_channel_map(pa_source_output_new_data *data, const pa_channel_map *map) {
pa_assert(data);
if ((data->channel_map_is_set = !!map))
data->channel_map = *map;
}
bool pa_source_output_new_data_is_passthrough(pa_source_output_new_data *data) {
pa_assert(data);
if (PA_LIKELY(data->format) && PA_UNLIKELY(!pa_format_info_is_pcm(data->format)))
return true;
if (PA_UNLIKELY(data->flags & PA_SOURCE_OUTPUT_PASSTHROUGH))
return true;
return false;
}
void pa_source_output_new_data_set_volume(pa_source_output_new_data *data, const pa_cvolume *volume) {
pa_assert(data);
pa_assert(data->volume_writable);
if ((data->volume_is_set = !!volume))
data->volume = *volume;
}
void pa_source_output_new_data_apply_volume_factor(pa_source_output_new_data *data, const pa_cvolume *volume_factor) {
pa_assert(data);
pa_assert(volume_factor);
if (data->volume_factor_is_set)
pa_sw_cvolume_multiply(&data->volume_factor, &data->volume_factor, volume_factor);
else {
data->volume_factor_is_set = true;
data->volume_factor = *volume_factor;
}
}
void pa_source_output_new_data_apply_volume_factor_source(pa_source_output_new_data *data, const pa_cvolume *volume_factor) {
pa_assert(data);
pa_assert(volume_factor);
if (data->volume_factor_source_is_set)
pa_sw_cvolume_multiply(&data->volume_factor_source, &data->volume_factor_source, volume_factor);
else {
data->volume_factor_source_is_set = true;
data->volume_factor_source = *volume_factor;
}
}
void pa_source_output_new_data_set_muted(pa_source_output_new_data *data, bool mute) {
pa_assert(data);
data->muted_is_set = true;
data->muted = mute;
}
bool pa_source_output_new_data_set_source(pa_source_output_new_data *data, pa_source *s, bool save,
bool requested_by_application) {
bool ret = true;
pa_idxset *formats = NULL;
pa_assert(data);
pa_assert(s);
if (!data->req_formats) {
/* We're not working with the extended API */
data->source = s;
if (save) {
pa_xfree(data->preferred_source);
data->preferred_source = pa_xstrdup(s->name);
}
data->source_requested_by_application = requested_by_application;
} else {
/* Extended API: let's see if this source supports the formats the client would like */
formats = pa_source_check_formats(s, data->req_formats);
if (formats && !pa_idxset_isempty(formats)) {
/* Source supports at least one of the requested formats */
data->source = s;
if (save) {
pa_xfree(data->preferred_source);
data->preferred_source = pa_xstrdup(s->name);
}
data->source_requested_by_application = requested_by_application;
if (data->nego_formats)
pa_idxset_free(data->nego_formats, (pa_free_cb_t) pa_format_info_free);
data->nego_formats = formats;
} else {
/* Source doesn't support any of the formats requested by the client */
if (formats)
pa_idxset_free(formats, (pa_free_cb_t) pa_format_info_free);
ret = false;
}
}
return ret;
}
bool pa_source_output_new_data_set_formats(pa_source_output_new_data *data, pa_idxset *formats) {
pa_assert(data);
pa_assert(formats);
if (data->req_formats)
pa_idxset_free(data->req_formats, (pa_free_cb_t) pa_format_info_free);
data->req_formats = formats;
if (data->source) {
/* Trigger format negotiation */
return pa_source_output_new_data_set_source(data, data->source, (data->preferred_source != NULL),
data->source_requested_by_application);
}
return true;
}
void pa_source_output_new_data_done(pa_source_output_new_data *data) {
pa_assert(data);
if (data->req_formats)
pa_idxset_free(data->req_formats, (pa_free_cb_t) pa_format_info_free);
if (data->nego_formats)
pa_idxset_free(data->nego_formats, (pa_free_cb_t) pa_format_info_free);
if (data->format)
pa_format_info_free(data->format);
if (data->preferred_source)
pa_xfree(data->preferred_source);
pa_proplist_free(data->proplist);
}
/* Called from main context */
static void reset_callbacks(pa_source_output *o) {
pa_assert(o);
o->push = NULL;
o->process_rewind = NULL;
o->update_max_rewind = NULL;
o->update_source_requested_latency = NULL;
o->update_source_latency_range = NULL;
o->update_source_fixed_latency = NULL;
o->attach = NULL;
o->detach = NULL;
o->suspend = NULL;
o->suspend_within_thread = NULL;
o->moving = NULL;
o->kill = NULL;
o->get_latency = NULL;
o->state_change = NULL;
o->may_move_to = NULL;
o->send_event = NULL;
o->volume_changed = NULL;
o->mute_changed = NULL;
}
/* Called from main context */
int pa_source_output_new(
pa_source_output**_o,
pa_core *core,
pa_source_output_new_data *data) {
pa_source_output *o;
pa_resampler *resampler = NULL;
char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX], fmt[PA_FORMAT_INFO_SNPRINT_MAX];
pa_channel_map volume_map;
int r;
char *pt;
size_t resampler_history;
pa_assert(_o);
pa_assert(core);
pa_assert(data);
pa_assert_ctl_context();
if (data->client)
pa_proplist_update(data->proplist, PA_UPDATE_MERGE, data->client->proplist);
if (data->destination_source && (data->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER))
data->volume_writable = false;
if (!data->req_formats) {
/* From this point on, we want to work only with formats, and get back
* to using the sample spec and channel map after all decisions w.r.t.
* routing are complete. */
pa_format_info *f;
pa_idxset *formats;
f = pa_format_info_from_sample_spec2(&data->sample_spec, data->channel_map_is_set ? &data->channel_map : NULL,
!(data->flags & PA_SOURCE_OUTPUT_FIX_FORMAT),
!(data->flags & PA_SOURCE_OUTPUT_FIX_RATE),
!(data->flags & PA_SOURCE_OUTPUT_FIX_CHANNELS));
if (!f)
return -PA_ERR_INVALID;
formats = pa_idxset_new(NULL, NULL);
pa_idxset_put(formats, f, NULL);
pa_source_output_new_data_set_formats(data, formats);
}
if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], data)) < 0)
return r;
pa_return_val_if_fail(!data->driver || pa_utf8_valid(data->driver), -PA_ERR_INVALID);
if (!data->source) {
pa_source *source;
if (data->direct_on_input) {
source = data->direct_on_input->sink->monitor_source;
pa_return_val_if_fail(source, -PA_ERR_INVALID);
} else {
source = pa_namereg_get(core, NULL, PA_NAMEREG_SOURCE);
pa_return_val_if_fail(source, -PA_ERR_NOENTITY);
}
pa_source_output_new_data_set_source(data, source, false, false);
}
/* If something didn't pick a format for us, pick the top-most format since
* we assume this is sorted in priority order */
if (!data->format && data->nego_formats && !pa_idxset_isempty(data->nego_formats))
data->format = pa_format_info_copy(pa_idxset_first(data->nego_formats, NULL));
if (PA_LIKELY(data->format)) {
/* We know that data->source is set, because data->format has been set.
* data->format is set after a successful format negotiation, and that
* can't happen before data->source has been set. */
pa_assert(data->source);
pa_log_debug("Negotiated format: %s", pa_format_info_snprint(fmt, sizeof(fmt), data->format));
} else {
pa_format_info *format;
uint32_t idx;
pa_log_info("Source does not support any requested format:");
PA_IDXSET_FOREACH(format, data->req_formats, idx)
pa_log_info(" -- %s", pa_format_info_snprint(fmt, sizeof(fmt), format));
return -PA_ERR_NOTSUPPORTED;
}
pa_return_val_if_fail(PA_SOURCE_IS_LINKED(data->source->state), -PA_ERR_BADSTATE);
pa_return_val_if_fail(!data->direct_on_input || data->direct_on_input->sink == data->source->monitor_of, -PA_ERR_INVALID);
/* Routing is done. We have a source and a format. */
if (data->volume_is_set && !pa_source_output_new_data_is_passthrough(data)) {
/* If volume is set, we need to save the original data->channel_map,
* so that we can remap the volume from the original channel map to the
* final channel map of the stream in case data->channel_map gets
* modified in pa_format_info_to_sample_spec2(). */
r = pa_stream_get_volume_channel_map(&data->volume, data->channel_map_is_set ? &data->channel_map : NULL, data->format, &volume_map);
if (r < 0)
return r;
} else {
/* Initialize volume_map to invalid state. We check the state later to
* determine if volume remapping is needed. */
pa_channel_map_init(&volume_map);
}
/* Now populate the sample spec and channel map according to the final
* format that we've negotiated */
r = pa_format_info_to_sample_spec2(data->format, &data->sample_spec, &data->channel_map, &data->source->sample_spec,
&data->source->channel_map);
if (r < 0)
return r;
/* Don't restore (or save) stream volume for passthrough streams and
* prevent attenuation/gain */
if (pa_source_output_new_data_is_passthrough(data)) {
data->volume_is_set = true;
pa_cvolume_reset(&data->volume, data->sample_spec.channels);
data->volume_is_absolute = true;
data->save_volume = false;
}
if (!data->volume_is_set) {
pa_cvolume_reset(&data->volume, data->sample_spec.channels);
data->volume_is_absolute = false;
data->save_volume = false;
}
if (!data->volume_writable)
data->save_volume = false;
if (pa_channel_map_valid(&volume_map))
/* The original volume channel map may be different than the final
* stream channel map, so remapping may be needed. */
pa_cvolume_remap(&data->volume, &volume_map, &data->channel_map);
if (!data->volume_factor_is_set)
pa_cvolume_reset(&data->volume_factor, data->sample_spec.channels);
pa_return_val_if_fail(pa_cvolume_compatible(&data->volume_factor, &data->sample_spec), -PA_ERR_INVALID);
if (!data->volume_factor_source_is_set)
pa_cvolume_reset(&data->volume_factor_source, data->source->sample_spec.channels);
pa_return_val_if_fail(pa_cvolume_compatible(&data->volume_factor_source, &data->source->sample_spec), -PA_ERR_INVALID);
if (!data->muted_is_set)
data->muted = false;
if (!(data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) &&
!pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec)) {
/* try to change source format and rate. This is done before the FIXATE hook since
module-suspend-on-idle can resume a source */
pa_log_info("Trying to change sample spec");
pa_source_reconfigure(data->source, &data->sample_spec, pa_source_output_new_data_is_passthrough(data));
}
if (pa_source_output_new_data_is_passthrough(data) &&
!pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec)) {
/* rate update failed, or other parts of sample spec didn't match */
pa_log_debug("Could not update source sample spec to match passthrough stream");
return -PA_ERR_NOTSUPPORTED;
}
if (data->resample_method == PA_RESAMPLER_INVALID)
data->resample_method = core->resample_method;
pa_return_val_if_fail(data->resample_method < PA_RESAMPLER_MAX, -PA_ERR_INVALID);
if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_FIXATE], data)) < 0)
return r;
if ((data->flags & PA_SOURCE_OUTPUT_NO_CREATE_ON_SUSPEND) &&
data->source->state == PA_SOURCE_SUSPENDED) {
pa_log("Failed to create source output: source is suspended.");
return -PA_ERR_BADSTATE;
}
if (pa_idxset_size(data->source->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
pa_log("Failed to create source output: too many outputs per source.");
return -PA_ERR_TOOLARGE;
}
if ((data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&data->sample_spec, &data->source->sample_spec) ||
!pa_channel_map_equal(&data->channel_map, &data->source->channel_map)) {
if (!pa_source_output_new_data_is_passthrough(data)) /* no resampler for passthrough content */
if (!(resampler = pa_resampler_new(
core->mempool,
&data->source->sample_spec, &data->source->channel_map,
&data->sample_spec, &data->channel_map,
core->lfe_crossover_freq,
data->resample_method,
((data->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((data->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(core->disable_remixing || (data->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
(core->remixing_use_all_sink_channels ? 0 : PA_RESAMPLER_NO_FILL_SINK) |
(core->remixing_produce_lfe ? PA_RESAMPLER_PRODUCE_LFE : 0) |
(core->remixing_consume_lfe ? PA_RESAMPLER_CONSUME_LFE : 0)))) {
pa_log_warn("Unsupported resampling operation.");
return -PA_ERR_NOTSUPPORTED;
}
}
o = pa_msgobject_new(pa_source_output);
o->parent.parent.free = source_output_free;
o->parent.process_msg = pa_source_output_process_msg;
o->core = core;
o->state = PA_SOURCE_OUTPUT_INIT;
o->flags = data->flags;
o->proplist = pa_proplist_copy(data->proplist);
o->driver = pa_xstrdup(pa_path_get_filename(data->driver));
o->module = data->module;
o->source = data->source;
o->source_requested_by_application = data->source_requested_by_application;
o->destination_source = data->destination_source;
o->client = data->client;
o->requested_resample_method = data->resample_method;
o->actual_resample_method = resampler ? pa_resampler_get_method(resampler) : PA_RESAMPLER_INVALID;
o->sample_spec = data->sample_spec;
o->channel_map = data->channel_map;
o->format = pa_format_info_copy(data->format);
if (!data->volume_is_absolute && pa_source_flat_volume_enabled(o->source)) {
pa_cvolume remapped;
/* When the 'absolute' bool is not set then we'll treat the volume
* as relative to the source volume even in flat volume mode */
remapped = data->source->reference_volume;
pa_cvolume_remap(&remapped, &data->source->channel_map, &data->channel_map);
pa_sw_cvolume_multiply(&o->volume, &data->volume, &remapped);
} else
o->volume = data->volume;
o->volume_factor = data->volume_factor;
o->volume_factor_source = data->volume_factor_source;
o->real_ratio = o->reference_ratio = data->volume;
pa_cvolume_reset(&o->soft_volume, o->sample_spec.channels);
pa_cvolume_reset(&o->real_ratio, o->sample_spec.channels);
o->volume_writable = data->volume_writable;
o->save_volume = data->save_volume;
o->preferred_source = pa_xstrdup(data->preferred_source);
o->save_muted = data->save_muted;
o->muted = data->muted;
o->direct_on_input = data->direct_on_input;
reset_callbacks(o);
o->userdata = NULL;
o->thread_info.state = o->state;
o->thread_info.attached = false;
o->thread_info.sample_spec = o->sample_spec;
o->thread_info.resampler = resampler;
o->thread_info.soft_volume = o->soft_volume;
o->thread_info.muted = o->muted;
o->thread_info.requested_source_latency = (pa_usec_t) -1;
o->thread_info.direct_on_input = o->direct_on_input;
o->thread_info.delay_memblockq = pa_memblockq_new(
"source output delay_memblockq",
0,
MEMBLOCKQ_MAXLENGTH,
0,
&o->source->sample_spec,
0,
1,
0,
&o->source->silence);
resampler_history = (uint64_t) PA_RESAMPLER_MAX_DELAY_USEC * o->source->sample_spec.rate / PA_USEC_PER_SEC;
resampler_history *= pa_frame_size(&o->source->sample_spec);
pa_memblockq_set_maxrewind(o->thread_info.delay_memblockq, resampler_history + pa_source_get_max_rewind(o->source));
pa_assert_se(pa_idxset_put(core->source_outputs, o, &o->index) == 0);
pa_assert_se(pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL) == 0);
if (o->client)
pa_assert_se(pa_idxset_put(o->client->source_outputs, o, NULL) >= 0);
if (o->direct_on_input)
pa_assert_se(pa_idxset_put(o->direct_on_input->direct_outputs, o, NULL) == 0);
pt = pa_proplist_to_string_sep(o->proplist, "\n ");
pa_log_info("Created output %u \"%s\" on %s with sample spec %s and channel map %s\n %s",
o->index,
pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)),
o->source->name,
pa_sample_spec_snprint(st, sizeof(st), &o->sample_spec),
pa_channel_map_snprint(cm, sizeof(cm), &o->channel_map),
pt);
pa_xfree(pt);
/* Don't forget to call pa_source_output_put! */
*_o = o;
return 0;
}
/* Called from main context */
static void update_n_corked(pa_source_output *o, pa_source_output_state_t state) {
pa_assert(o);
pa_assert_ctl_context();
if (!o->source)
return;
if (o->state == PA_SOURCE_OUTPUT_CORKED && state != PA_SOURCE_OUTPUT_CORKED)
pa_assert_se(o->source->n_corked -- >= 1);
else if (o->state != PA_SOURCE_OUTPUT_CORKED && state == PA_SOURCE_OUTPUT_CORKED)
o->source->n_corked++;
}
/* Called from main context */
static void source_output_set_state(pa_source_output *o, pa_source_output_state_t state) {
pa_assert(o);
pa_assert_ctl_context();
if (o->state == state)
return;
if (o->source) {
if (o->state == PA_SOURCE_OUTPUT_CORKED && state == PA_SOURCE_OUTPUT_RUNNING && pa_source_used_by(o->source) == 0 &&
!pa_sample_spec_equal(&o->sample_spec, &o->source->sample_spec)) {
/* We were uncorked and the source was not playing anything -- let's try
* to update the sample format and rate to avoid resampling */
pa_source_reconfigure(o->source, &o->sample_spec, pa_source_output_is_passthrough(o));
}
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) == 0);
} else
/* If the source is not valid, pa_source_output_set_state_within_thread() must be called directly */
pa_source_output_set_state_within_thread(o, state);
update_n_corked(o, state);
o->state = state;
if (state != PA_SOURCE_OUTPUT_UNLINKED) {
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_STATE_CHANGED], o);
if (PA_SOURCE_OUTPUT_IS_LINKED(state))
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
}
if (o->source)
pa_source_update_status(o->source);
}
/* Called from main context */
void pa_source_output_unlink(pa_source_output*o) {
bool linked;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
/* See pa_sink_unlink() for a couple of comments how this function
* works */
pa_source_output_ref(o);
linked = PA_SOURCE_OUTPUT_IS_LINKED(o->state);
if (linked)
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK], o);
if (o->direct_on_input)
pa_idxset_remove_by_data(o->direct_on_input->direct_outputs, o, NULL);
pa_idxset_remove_by_data(o->core->source_outputs, o, NULL);
if (o->source)
if (pa_idxset_remove_by_data(o->source->outputs, o, NULL))
pa_source_output_unref(o);
if (o->client)
pa_idxset_remove_by_data(o->client->source_outputs, o, NULL);
update_n_corked(o, PA_SOURCE_OUTPUT_UNLINKED);
o->state = PA_SOURCE_OUTPUT_UNLINKED;
if (linked && o->source) {
if (pa_source_output_is_passthrough(o))
pa_source_leave_passthrough(o->source);
/* We might need to update the source's volume if we are in flat volume mode. */
if (pa_source_flat_volume_enabled(o->source))
pa_source_set_volume(o->source, NULL, false, false);
if (o->source->asyncmsgq)
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
}
reset_callbacks(o);
if (o->source) {
if (PA_SOURCE_IS_LINKED(o->source->state))
pa_source_update_status(o->source);
o->source = NULL;
}
if (linked) {
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_REMOVE, o->index);
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_UNLINK_POST], o);
}
pa_core_maybe_vacuum(o->core);
pa_source_output_unref(o);
}
/* Called from main context */
static void source_output_free(pa_object* mo) {
pa_source_output *o = PA_SOURCE_OUTPUT(mo);
pa_assert(o);
pa_assert_ctl_context();
pa_assert(pa_source_output_refcnt(o) == 0);
pa_assert(!PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_log_info("Freeing output %u \"%s\"", o->index,
o->proplist ? pa_strnull(pa_proplist_gets(o->proplist, PA_PROP_MEDIA_NAME)) : "");
if (o->thread_info.delay_memblockq)
pa_memblockq_free(o->thread_info.delay_memblockq);
if (o->thread_info.resampler)
pa_resampler_free(o->thread_info.resampler);
if (o->format)
pa_format_info_free(o->format);
if (o->proplist)
pa_proplist_free(o->proplist);
if (o->preferred_source)
pa_xfree(o->preferred_source);
pa_xfree(o->driver);
pa_xfree(o);
}
/* Called from main context */
void pa_source_output_put(pa_source_output *o) {
pa_source_output_state_t state;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(o->state == PA_SOURCE_OUTPUT_INIT);
/* The following fields must be initialized properly */
pa_assert(o->push);
pa_assert(o->kill);
state = o->flags & PA_SOURCE_OUTPUT_START_CORKED ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING;
update_n_corked(o, state);
o->state = state;
/* We might need to update the source's volume if we are in flat volume mode. */
if (pa_source_flat_volume_enabled(o->source))
pa_source_set_volume(o->source, NULL, false, o->save_volume);
else {
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
pa_assert(pa_cvolume_is_norm(&o->volume));
pa_assert(pa_cvolume_is_norm(&o->reference_ratio));
}
set_real_ratio(o, &o->volume);
}
if (pa_source_output_is_passthrough(o))
pa_source_enter_passthrough(o->source);
o->thread_info.soft_volume = o->soft_volume;
o->thread_info.muted = o->muted;
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_NEW, o->index);
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], o);
pa_source_update_status(o->source);
}
/* Called from main context */
void pa_source_output_kill(pa_source_output*o) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
o->kill(o);
}
/* Called from main context */
pa_usec_t pa_source_output_get_latency(pa_source_output *o, pa_usec_t *source_latency) {
pa_usec_t r[2] = { 0, 0 };
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);
if (o->get_latency)
r[0] += o->get_latency(o);
if (source_latency)
*source_latency = r[1];
return r[0];
}
/* Called from thread context */
void pa_source_output_push(pa_source_output *o, const pa_memchunk *chunk) {
bool need_volume_factor_source;
bool volume_is_norm;
size_t length;
size_t limit, mbs = 0;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
pa_assert(chunk);
pa_assert(pa_frame_aligned(chunk->length, &o->source->sample_spec));
if (!o->push || o->thread_info.state == PA_SOURCE_OUTPUT_CORKED)
return;
pa_assert(o->thread_info.state == PA_SOURCE_OUTPUT_RUNNING);
if (pa_memblockq_push(o->thread_info.delay_memblockq, chunk) < 0) {
pa_log_debug("Delay queue overflow!");
pa_memblockq_seek(o->thread_info.delay_memblockq, (int64_t) chunk->length, PA_SEEK_RELATIVE, true);
}
limit = o->process_rewind ? 0 : o->source->thread_info.max_rewind;
volume_is_norm = pa_cvolume_is_norm(&o->thread_info.soft_volume) && !o->thread_info.muted;
need_volume_factor_source = !pa_cvolume_is_norm(&o->volume_factor_source);
if (limit > 0 && o->source->monitor_of) {
pa_usec_t latency;
size_t n;
/* Hmm, check the latency for knowing how much of the buffered
* data is actually still unplayed and might hence still
* change. This is suboptimal. Ideally we'd have a call like
* pa_sink_get_changeable_size() or so that tells us how much
* of the queued data is actually still changeable. Hence
* FIXME! */
latency = pa_sink_get_latency_within_thread(o->source->monitor_of, false);
n = pa_usec_to_bytes(latency, &o->source->sample_spec);
if (n < limit)
limit = n;
}
/* Implement the delay queue */
while ((length = pa_memblockq_get_length(o->thread_info.delay_memblockq)) > limit) {
pa_memchunk qchunk;
bool nvfs = need_volume_factor_source;
length -= limit;
pa_assert_se(pa_memblockq_peek(o->thread_info.delay_memblockq, &qchunk) >= 0);
if (qchunk.length > length)
qchunk.length = length;
pa_assert(qchunk.length > 0);
/* It might be necessary to adjust the volume here */
if (!volume_is_norm) {
pa_memchunk_make_writable(&qchunk, 0);
if (o->thread_info.muted) {
pa_silence_memchunk(&qchunk, &o->source->sample_spec);
nvfs = false;
} else if (!o->thread_info.resampler && nvfs) {
pa_cvolume v;
/* If we don't need a resampler we can merge the
* post and the pre volume adjustment into one */
pa_sw_cvolume_multiply(&v, &o->thread_info.soft_volume, &o->volume_factor_source);
pa_volume_memchunk(&qchunk, &o->source->sample_spec, &v);
nvfs = false;
} else
pa_volume_memchunk(&qchunk, &o->source->sample_spec, &o->thread_info.soft_volume);
}
if (nvfs) {
pa_memchunk_make_writable(&qchunk, 0);
pa_volume_memchunk(&qchunk, &o->source->sample_spec, &o->volume_factor_source);
}
if (!o->thread_info.resampler)
o->push(o, &qchunk);
else {
pa_memchunk rchunk;
if (mbs == 0)
mbs = pa_resampler_max_block_size(o->thread_info.resampler);
if (qchunk.length > mbs)
qchunk.length = mbs;
pa_resampler_run(o->thread_info.resampler, &qchunk, &rchunk);
if (rchunk.length > 0)
o->push(o, &rchunk);
if (rchunk.memblock)
pa_memblock_unref(rchunk.memblock);
}
pa_memblock_unref(qchunk.memblock);
pa_memblockq_drop(o->thread_info.delay_memblockq, qchunk.length);
}
}
/* Called from thread context */
void pa_source_output_process_rewind(pa_source_output *o, size_t nbytes /* in source sample spec */) {
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
if (nbytes <= 0)
return;
if (o->process_rewind) {
size_t source_output_nbytes;
size_t length;
/* The length of the memblockq may be non-zero if pa_source_output_rewind() is called twice
* without pa_source_output_push() called in between. In that case, the resampler has already
* been reset and we can skip that part. */
length = pa_memblockq_get_length(o->thread_info.delay_memblockq);
pa_memblockq_rewind(o->thread_info.delay_memblockq, nbytes);
source_output_nbytes = pa_resampler_result(o->thread_info.resampler, nbytes);
pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) source_output_nbytes);
if (source_output_nbytes > 0)
o->process_rewind(o, source_output_nbytes);
if (o->thread_info.resampler && length == 0) {
size_t resampler_bytes;
/* Round down to full frames */
resampler_bytes = (size_t) pa_resampler_get_delay(o->thread_info.resampler, false) * pa_frame_size(&o->source->sample_spec);
if (resampler_bytes > 0)
pa_memblockq_rewind(o->thread_info.delay_memblockq, resampler_bytes);
pa_resampler_rewind(o->thread_info.resampler, source_output_nbytes, NULL, 0);
}
}
pa_memblockq_seek(o->thread_info.delay_memblockq, - ((int64_t) nbytes), PA_SEEK_RELATIVE, true);
}
/* Called from thread context */
size_t pa_source_output_get_max_rewind(pa_source_output *o) {
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
return pa_resampler_result(o->thread_info.resampler, o->source->thread_info.max_rewind);
}
/* Called from thread context */
void pa_source_output_update_max_rewind(pa_source_output *o, size_t nbytes /* in the source's sample spec */) {
size_t resampler_history;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &o->source->sample_spec));
resampler_history = (uint64_t) PA_RESAMPLER_MAX_DELAY_USEC * o->source->sample_spec.rate / PA_USEC_PER_SEC;
resampler_history *= pa_frame_size(&o->source->sample_spec);
pa_memblockq_set_maxrewind(o->thread_info.delay_memblockq, resampler_history + nbytes);
if (o->update_max_rewind)
o->update_max_rewind(o, pa_resampler_result(o->thread_info.resampler, nbytes));
}
/* Called from thread context */
pa_usec_t pa_source_output_set_requested_latency_within_thread(pa_source_output *o, pa_usec_t usec) {
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
usec = o->source->thread_info.fixed_latency;
if (usec != (pa_usec_t) -1)
usec = PA_CLAMP(usec, o->source->thread_info.min_latency, o->source->thread_info.max_latency);
o->thread_info.requested_source_latency = usec;
pa_source_invalidate_requested_latency(o->source, true);
return usec;
}
/* Called from main context */
pa_usec_t pa_source_output_set_requested_latency(pa_source_output *o, pa_usec_t usec) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
return usec;
}
/* If this source output is not realized yet or is being moved, we
* have to touch the thread info data directly */
if (o->source) {
if (!(o->source->flags & PA_SOURCE_DYNAMIC_LATENCY))
usec = pa_source_get_fixed_latency(o->source);
if (usec != (pa_usec_t) -1) {
pa_usec_t min_latency, max_latency;
pa_source_get_latency_range(o->source, &min_latency, &max_latency);
usec = PA_CLAMP(usec, min_latency, max_latency);
}
}
o->thread_info.requested_source_latency = usec;
return usec;
}
/* Called from main context */
pa_usec_t pa_source_output_get_requested_latency(pa_source_output *o) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
if (PA_SOURCE_OUTPUT_IS_LINKED(o->state) && o->source) {
pa_usec_t usec = 0;
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
return usec;
}
/* If this source output is not realized yet or is being moved, we
* have to touch the thread info data directly */
return o->thread_info.requested_source_latency;
}
/* Called from main context */
void pa_source_output_set_volume(pa_source_output *o, const pa_cvolume *volume, bool save, bool absolute) {
pa_cvolume v;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_assert(volume);
pa_assert(pa_cvolume_valid(volume));
pa_assert(volume->channels == 1 || pa_cvolume_compatible(volume, &o->sample_spec));
pa_assert(o->volume_writable);
if (!absolute && pa_source_flat_volume_enabled(o->source)) {
v = o->source->reference_volume;
pa_cvolume_remap(&v, &o->source->channel_map, &o->channel_map);
if (pa_cvolume_compatible(volume, &o->sample_spec))
volume = pa_sw_cvolume_multiply(&v, &v, volume);
else
volume = pa_sw_cvolume_multiply_scalar(&v, &v, pa_cvolume_max(volume));
} else {
if (!pa_cvolume_compatible(volume, &o->sample_spec)) {
v = o->volume;
volume = pa_cvolume_scale(&v, pa_cvolume_max(volume));
}
}
if (pa_cvolume_equal(volume, &o->volume)) {
o->save_volume = o->save_volume || save;
return;
}
pa_source_output_set_volume_direct(o, volume);
o->save_volume = save;
if (pa_source_flat_volume_enabled(o->source)) {
/* We are in flat volume mode, so let's update all source input
* volumes and update the flat volume of the source */
pa_source_set_volume(o->source, NULL, true, save);
} else {
/* OK, we are in normal volume mode. The volume only affects
* ourselves */
set_real_ratio(o, volume);
/* Copy the new soft_volume to the thread_info struct */
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_VOLUME, NULL, 0, NULL) == 0);
}
/* The volume changed, let's tell people so */
if (o->volume_changed)
o->volume_changed(o);
/* The virtual volume changed, let's tell people so */
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
}
/* Called from main context */
static void set_real_ratio(pa_source_output *o, const pa_cvolume *v) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_assert(!v || pa_cvolume_compatible(v, &o->sample_spec));
/* This basically calculates:
*
* o->real_ratio := v
* o->soft_volume := o->real_ratio * o->volume_factor */
if (v)
o->real_ratio = *v;
else
pa_cvolume_reset(&o->real_ratio, o->sample_spec.channels);
pa_sw_cvolume_multiply(&o->soft_volume, &o->real_ratio, &o->volume_factor);
/* We don't copy the data to the thread_info data. That's left for someone else to do */
}
/* Called from main or I/O context */
bool pa_source_output_is_passthrough(pa_source_output *o) {
pa_source_output_assert_ref(o);
if (PA_UNLIKELY(!pa_format_info_is_pcm(o->format)))
return true;
if (PA_UNLIKELY(o->flags & PA_SOURCE_OUTPUT_PASSTHROUGH))
return true;
return false;
}
/* Called from main context */
bool pa_source_output_is_volume_readable(pa_source_output *o) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
return !pa_source_output_is_passthrough(o);
}
/* Called from main context */
pa_cvolume *pa_source_output_get_volume(pa_source_output *o, pa_cvolume *volume, bool absolute) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_assert(pa_source_output_is_volume_readable(o));
if (absolute || !pa_source_flat_volume_enabled(o->source))
*volume = o->volume;
else
*volume = o->reference_ratio;
return volume;
}
/* Called from main context */
void pa_source_output_set_mute(pa_source_output *o, bool mute, bool save) {
bool old_mute;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
old_mute = o->muted;
if (mute == old_mute) {
o->save_muted |= save;
return;
}
o->muted = mute;
pa_log_debug("The mute of source output %u changed from %s to %s.", o->index, pa_yes_no(old_mute), pa_yes_no(mute));
o->save_muted = save;
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_MUTE, NULL, 0, NULL) == 0);
/* The mute status changed, let's tell people so */
if (o->mute_changed)
o->mute_changed(o);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MUTE_CHANGED], o);
}
void pa_source_output_set_property(pa_source_output *o, const char *key, const char *value) {
char *old_value = NULL;
const char *new_value;
pa_assert(o);
pa_assert(key);
if (pa_proplist_contains(o->proplist, key)) {
old_value = pa_xstrdup(pa_proplist_gets(o->proplist, key));
if (value && old_value && pa_streq(value, old_value))
goto finish;
if (!old_value)
old_value = pa_xstrdup("(data)");
} else {
if (!value)
goto finish;
old_value = pa_xstrdup("(unset)");
}
if (value) {
pa_proplist_sets(o->proplist, key, value);
new_value = value;
} else {
pa_proplist_unset(o->proplist, key);
new_value = "(unset)";
}
if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
pa_log_debug("Source output %u: proplist[%s]: %s -> %s", o->index, key, old_value, new_value);
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT | PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
}
finish:
pa_xfree(old_value);
}
void pa_source_output_set_property_arbitrary(pa_source_output *o, const char *key, const uint8_t *value, size_t nbytes) {
const uint8_t *old_value;
size_t old_nbytes;
const char *old_value_str;
const char *new_value_str;
pa_assert(o);
pa_assert(key);
if (pa_proplist_get(o->proplist, key, (const void **) &old_value, &old_nbytes) >= 0) {
if (value && nbytes == old_nbytes && !memcmp(value, old_value, nbytes))
return;
old_value_str = "(data)";
} else {
if (!value)
return;
old_value_str = "(unset)";
}
if (value) {
pa_proplist_set(o->proplist, key, value, nbytes);
new_value_str = "(data)";
} else {
pa_proplist_unset(o->proplist, key);
new_value_str = "(unset)";
}
if (PA_SOURCE_OUTPUT_IS_LINKED(o->state)) {
pa_log_debug("Source output %u: proplist[%s]: %s -> %s", o->index, key, old_value_str, new_value_str);
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PROPLIST_CHANGED], o);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT | PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
}
}
/* Called from main thread */
void pa_source_output_update_proplist(pa_source_output *o, pa_update_mode_t mode, pa_proplist *p) {
void *state;
const char *key;
const uint8_t *value;
size_t nbytes;
pa_source_output_assert_ref(o);
pa_assert(p);
pa_assert_ctl_context();
switch (mode) {
case PA_UPDATE_SET:
/* Delete everything that is not in p. */
for (state = NULL; (key = pa_proplist_iterate(o->proplist, &state));) {
if (!pa_proplist_contains(p, key))
pa_source_output_set_property(o, key, NULL);
}
/* Fall through. */
case PA_UPDATE_REPLACE:
for (state = NULL; (key = pa_proplist_iterate(p, &state));) {
pa_proplist_get(p, key, (const void **) &value, &nbytes);
pa_source_output_set_property_arbitrary(o, key, value, nbytes);
}
break;
case PA_UPDATE_MERGE:
for (state = NULL; (key = pa_proplist_iterate(p, &state));) {
if (pa_proplist_contains(o->proplist, key))
continue;
pa_proplist_get(p, key, (const void **) &value, &nbytes);
pa_source_output_set_property_arbitrary(o, key, value, nbytes);
}
break;
}
}
/* Called from main context */
void pa_source_output_cork(pa_source_output *o, bool b) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
source_output_set_state(o, b ? PA_SOURCE_OUTPUT_CORKED : PA_SOURCE_OUTPUT_RUNNING);
}
/* Called from main context */
int pa_source_output_set_rate(pa_source_output *o, uint32_t rate) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_return_val_if_fail(o->thread_info.resampler, -PA_ERR_BADSTATE);
if (o->sample_spec.rate == rate)
return 0;
o->sample_spec.rate = rate;
pa_asyncmsgq_post(o->source->asyncmsgq, PA_MSGOBJECT(o), PA_SOURCE_OUTPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
return 0;
}
/* Called from main context */
pa_resample_method_t pa_source_output_get_resample_method(pa_source_output *o) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
return o->actual_resample_method;
}
/* Called from main context */
bool pa_source_output_may_move(pa_source_output *o) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
if (o->flags & PA_SOURCE_OUTPUT_DONT_MOVE)
return false;
if (o->direct_on_input)
return false;
return true;
}
bool pa_source_output_is_filter_loop(pa_source_output *target, pa_source *s) {
unsigned PA_UNUSED i = 0;
/* During consolidation, we have to support s->output_from_master and
* s->vsource->output_from_master. The first will disappear after all
* virtual sources use the new code. */
while (s && (s->output_from_master || (s->vsource && s->vsource->output_from_master))) {
if (s->vsource) {
if (s->vsource->output_from_master == target)
return true;
s = s->vsource->output_from_master->source;
} else {
if (s->output_from_master == target)
return true;
s = s->output_from_master->source;
}
pa_assert(i++ < 100);
}
return false;
}
static bool is_filter_source_moving(pa_source_output *o) {
pa_source *source = o->source;
if (!source)
return false;
while (source->output_from_master || (source->vsource && source->vsource->output_from_master)) {
if (source->vsource)
source = source->vsource->output_from_master->source;
else
source = source->output_from_master->source;
if (!source)
return true;
}
return false;
}
/* Called from main context */
bool pa_source_output_may_move_to(pa_source_output *o, pa_source *dest) {
pa_source_output_assert_ref(o);
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_source_assert_ref(dest);
if (dest == o->source)
return true;
if (dest->unlink_requested)
return false;
if (!pa_source_output_may_move(o))
return false;
/* Make sure we're not creating a filter source cycle */
if (pa_source_output_is_filter_loop(o, dest)) {
pa_log_debug("Can't connect output to %s, as that would create a cycle.", dest->name);
return false;
}
/* If this source output is connected to a filter source that itself is
* moving, then don't allow the move. Moving requires sending a message to
* the IO thread of the old source, and if the old source is a filter
* source that is moving, there's no IO thread associated to the old
* source. */
if (is_filter_source_moving(o)) {
pa_log_debug("Can't move output from filter source %s, because the filter source itself is currently moving.",
o->source->name);
return false;
}
if (pa_idxset_size(dest->outputs) >= PA_MAX_OUTPUTS_PER_SOURCE) {
pa_log_warn("Failed to move source output: too many outputs per source.");
return false;
}
if (o->may_move_to)
if (!o->may_move_to(o, dest))
return false;
return true;
}
/* Called from main context */
int pa_source_output_start_move(pa_source_output *o) {
pa_source *origin;
int r;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_assert(o->source);
if (!pa_source_output_may_move(o))
return -PA_ERR_NOTSUPPORTED;
if ((r = pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_START], o)) < 0)
return r;
pa_log_debug("Starting to move source output %u from '%s'", (unsigned) o->index, o->source->name);
origin = o->source;
pa_idxset_remove_by_data(o->source->outputs, o, NULL);
if (o->state == PA_SOURCE_OUTPUT_CORKED)
pa_assert_se(origin->n_corked-- >= 1);
if (pa_source_output_is_passthrough(o))
pa_source_leave_passthrough(o->source);
if (pa_source_flat_volume_enabled(o->source))
/* We might need to update the source's volume if we are in flat
* volume mode. */
pa_source_set_volume(o->source, NULL, false, false);
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_REMOVE_OUTPUT, o, 0, NULL) == 0);
pa_source_update_status(o->source);
pa_cvolume_remap(&o->volume_factor_source, &o->source->channel_map, &o->channel_map);
o->source = NULL;
o->source_requested_by_application = false;
pa_source_output_unref(o);
return 0;
}
/* Called from main context. If it has an origin source that uses volume sharing,
* then also the origin source and all streams connected to it need to update
* their volume - this function does all that by using recursion. */
static void update_volume_due_to_moving(pa_source_output *o, pa_source *dest) {
pa_cvolume new_volume;
pa_assert(o);
pa_assert(dest);
pa_assert(o->source); /* The destination source should already be set. */
if (o->destination_source && (o->destination_source->flags & PA_SOURCE_SHARE_VOLUME_WITH_MASTER)) {
pa_source *root_source;
pa_source_output *destination_source_output;
uint32_t idx;
root_source = pa_source_get_master(o->source);
if (PA_UNLIKELY(!root_source))
return;
if (pa_source_flat_volume_enabled(o->source)) {
/* Ok, so the origin source uses volume sharing, and flat volume is
* enabled. The volume will have to be updated as follows:
*
* o->volume := o->source->real_volume
* (handled later by pa_source_set_volume)
* o->reference_ratio := o->volume / o->source->reference_volume
* (handled later by pa_source_set_volume)
* o->real_ratio stays unchanged
* (streams whose origin source uses volume sharing should
* always have real_ratio of 0 dB)
* o->soft_volume stays unchanged
* (streams whose origin source uses volume sharing should
* always have volume_factor as soft_volume, so no change
* should be needed) */
pa_assert(pa_cvolume_is_norm(&o->real_ratio));
pa_assert(pa_cvolume_equal(&o->soft_volume, &o->volume_factor));
/* Notifications will be sent by pa_source_set_volume(). */
} else {
/* Ok, so the origin source uses volume sharing, and flat volume is
* disabled. The volume will have to be updated as follows:
*
* o->volume := 0 dB
* o->reference_ratio := 0 dB
* o->real_ratio stays unchanged
* (streams whose origin source uses volume sharing should
* always have real_ratio of 0 dB)
* o->soft_volume stays unchanged
* (streams whose origin source uses volume sharing should
* always have volume_factor as soft_volume, so no change
* should be needed) */
pa_cvolume_reset(&new_volume, o->volume.channels);
pa_source_output_set_volume_direct(o, &new_volume);
pa_source_output_set_reference_ratio(o, &new_volume);
pa_assert(pa_cvolume_is_norm(&o->real_ratio));
pa_assert(pa_cvolume_equal(&o->soft_volume, &o->volume_factor));
}
/* Additionally, the origin source volume needs updating:
*
* o->destination_source->reference_volume := root_source->reference_volume
* o->destination_source->real_volume := root_source->real_volume
* o->destination_source->soft_volume stays unchanged
* (sources that use volume sharing should always have
* soft_volume of 0 dB) */
new_volume = root_source->reference_volume;
pa_cvolume_remap(&new_volume, &root_source->channel_map, &o->destination_source->channel_map);
pa_source_set_reference_volume_direct(o->destination_source, &new_volume);
o->destination_source->real_volume = root_source->real_volume;
pa_cvolume_remap(&o->destination_source->real_volume, &root_source->channel_map, &o->destination_source->channel_map);
pa_assert(pa_cvolume_is_norm(&o->destination_source->soft_volume));
/* If you wonder whether o->destination_source->set_volume() should be
* called somewhere, that's not the case, because sources that use
* volume sharing shouldn't have any internal volume that set_volume()
* would update. If you wonder whether the thread_info variables should
* be synced, yes, they should, and it's done by the
* PA_SOURCE_MESSAGE_FINISH_MOVE message handler. */
/* Recursively update origin source outputs. */
PA_IDXSET_FOREACH(destination_source_output, o->destination_source->outputs, idx)
update_volume_due_to_moving(destination_source_output, dest);
} else {
if (pa_source_flat_volume_enabled(o->source)) {
/* Ok, so this is a regular stream, and flat volume is enabled. The
* volume will have to be updated as follows:
*
* o->volume := o->reference_ratio * o->source->reference_volume
* o->reference_ratio stays unchanged
* o->real_ratio := o->volume / o->source->real_volume
* (handled later by pa_source_set_volume)
* o->soft_volume := o->real_ratio * o->volume_factor
* (handled later by pa_source_set_volume) */
new_volume = o->source->reference_volume;
pa_cvolume_remap(&new_volume, &o->source->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);
} else {
/* Ok, so this is a regular stream, and flat volume is disabled.
* The volume will have to be updated as follows:
*
* o->volume := o->reference_ratio
* o->reference_ratio stays unchanged
* o->real_ratio := o->reference_ratio
* o->soft_volume := o->real_ratio * o->volume_factor */
pa_source_output_set_volume_direct(o, &o->reference_ratio);
o->real_ratio = o->reference_ratio;
pa_sw_cvolume_multiply(&o->soft_volume, &o->real_ratio, &o->volume_factor);
/* If this is a virtual source stream, we have to apply the source volume
* to the source output. */
if (o->destination_source) {
pa_cvolume vol;
vol = o->destination_source->real_volume;
pa_cvolume_remap(&vol, &o->destination_source->channel_map, &o->channel_map);
pa_source_output_set_volume(o, &vol, o->destination_source->save_volume, true);
}
}
}
/* If o->source == dest, then recursion has finished, and we can finally call
* pa_source_set_volume(), which will do the rest of the updates. */
if ((o->source == dest) && pa_source_flat_volume_enabled(o->source))
pa_source_set_volume(o->source, NULL, false, o->save_volume);
}
/* Called from the main thread. */
static void set_preferred_source(pa_source_output *o, const char *source_name) {
pa_assert(o);
if (pa_safe_streq(o->preferred_source, source_name))
return;
pa_log_debug("Source output %u: preferred_source: %s -> %s",
o->index, o->preferred_source ? o->preferred_source : "(unset)", source_name ? source_name : "(unset)");
pa_xfree(o->preferred_source);
o->preferred_source = pa_xstrdup(source_name);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT | PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PREFERRED_SOURCE_CHANGED], o);
}
/* Called from main context */
int pa_source_output_finish_move(pa_source_output *o, pa_source *dest, bool save) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_assert(!o->source);
pa_source_assert_ref(dest);
if (!pa_source_output_may_move_to(o, dest))
return -PA_ERR_NOTSUPPORTED;
if (pa_source_output_is_passthrough(o) && !pa_source_check_format(dest, o->format)) {
pa_proplist *p = pa_proplist_new();
pa_log_debug("New source doesn't support stream format, sending format-changed and killing");
/* Tell the client what device we want to be on if it is going to
* reconnect */
pa_proplist_sets(p, "device", dest->name);
pa_source_output_send_event(o, PA_STREAM_EVENT_FORMAT_LOST, p);
pa_proplist_free(p);
return -PA_ERR_NOTSUPPORTED;
}
if (!(o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) &&
!pa_sample_spec_equal(&o->sample_spec, &dest->sample_spec)) {
/* try to change dest source format and rate if possible without glitches.
module-suspend-on-idle resumes destination source with
SOURCE_OUTPUT_MOVE_FINISH hook */
pa_log_info("Trying to change sample spec");
pa_source_reconfigure(dest, &o->sample_spec, pa_source_output_is_passthrough(o));
}
if (o->moving)
o->moving(o, dest);
o->source = dest;
/* save == true, means user is calling the move_to() and want to
save the preferred_source */
if (save) {
if (dest == dest->core->default_source)
set_preferred_source(o, NULL);
else
set_preferred_source(o, dest->name);
}
pa_idxset_put(o->source->outputs, pa_source_output_ref(o), NULL);
pa_cvolume_remap(&o->volume_factor_source, &o->channel_map, &o->source->channel_map);
if (o->state == PA_SOURCE_OUTPUT_CORKED)
o->source->n_corked++;
pa_source_output_update_resampler(o);
pa_source_update_status(dest);
update_volume_due_to_moving(o, dest);
if (pa_source_output_is_passthrough(o))
pa_source_enter_passthrough(o->source);
pa_assert_se(pa_asyncmsgq_send(o->source->asyncmsgq, PA_MSGOBJECT(o->source), PA_SOURCE_MESSAGE_ADD_OUTPUT, o, 0, NULL) == 0);
pa_log_debug("Successfully moved source output %i to %s.", o->index, dest->name);
/* Notify everyone */
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH], o);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
return 0;
}
/* Called from main context */
void pa_source_output_fail_move(pa_source_output *o) {
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_assert(!o->source);
/* Check if someone wants this source output? */
if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FAIL], o) == PA_HOOK_STOP)
return;
/* Try to rescue stream if configured */
if (o->core->rescue_streams) {
/* Can we move the source output to the default source? */
if (pa_source_output_may_move_to(o, o->core->default_source)) {
if (pa_source_output_finish_move(o, o->core->default_source, false) >= 0)
return;
}
/* If this is a filter stream and the default source is set to a filter source within
* the same filter chain, we would create a loop and therefore have to find another
* source to move to. */
if (o->destination_source && pa_source_output_is_filter_loop(o, o->core->default_source)) {
pa_source *best;
best = pa_core_find_best_source(o->core, true);
if (best && pa_source_output_may_move_to(o, best)) {
if (pa_source_output_finish_move(o, best, false) >= 0)
return;
}
}
}
if (o->moving)
o->moving(o, NULL);
pa_source_output_kill(o);
}
/* Called from main context */
int pa_source_output_move_to(pa_source_output *o, pa_source *dest, bool save) {
int r;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(PA_SOURCE_OUTPUT_IS_LINKED(o->state));
pa_assert(o->source);
pa_source_assert_ref(dest);
if (dest == o->source)
return 0;
if (!pa_source_output_may_move_to(o, dest))
return -PA_ERR_NOTSUPPORTED;
pa_source_output_ref(o);
if ((r = pa_source_output_start_move(o)) < 0) {
pa_source_output_unref(o);
return r;
}
if ((r = pa_source_output_finish_move(o, dest, save)) < 0) {
pa_source_output_fail_move(o);
pa_source_output_unref(o);
return r;
}
pa_source_output_unref(o);
return 0;
}
/* Called from IO thread context except when cork() is called without a valid source. */
void pa_source_output_set_state_within_thread(pa_source_output *o, pa_source_output_state_t state) {
pa_source_output_assert_ref(o);
if (state == o->thread_info.state)
return;
if (o->state_change)
o->state_change(o, state);
o->thread_info.state = state;
}
/* Called from IO thread context, except when it is not */
int pa_source_output_process_msg(pa_msgobject *mo, int code, void *userdata, int64_t offset, pa_memchunk* chunk) {
pa_source_output *o = PA_SOURCE_OUTPUT(mo);
pa_source_output_assert_ref(o);
switch (code) {
case PA_SOURCE_OUTPUT_MESSAGE_GET_LATENCY: {
pa_usec_t *r = userdata;
r[0] += pa_bytes_to_usec(pa_memblockq_get_length(o->thread_info.delay_memblockq), &o->source->sample_spec);
r[0] += pa_resampler_get_delay_usec(o->thread_info.resampler);
r[1] += pa_source_get_latency_within_thread(o->source, false);
return 0;
}
case PA_SOURCE_OUTPUT_MESSAGE_SET_RATE:
o->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
pa_resampler_set_output_rate(o->thread_info.resampler, PA_PTR_TO_UINT(userdata));
return 0;
case PA_SOURCE_OUTPUT_MESSAGE_SET_STATE:
pa_source_output_set_state_within_thread(o, PA_PTR_TO_UINT(userdata));
return 0;
case PA_SOURCE_OUTPUT_MESSAGE_SET_REQUESTED_LATENCY: {
pa_usec_t *usec = userdata;
*usec = pa_source_output_set_requested_latency_within_thread(o, *usec);
return 0;
}
case PA_SOURCE_OUTPUT_MESSAGE_GET_REQUESTED_LATENCY: {
pa_usec_t *r = userdata;
*r = o->thread_info.requested_source_latency;
return 0;
}
case PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_VOLUME:
if (!pa_cvolume_equal(&o->thread_info.soft_volume, &o->soft_volume)) {
o->thread_info.soft_volume = o->soft_volume;
}
return 0;
case PA_SOURCE_OUTPUT_MESSAGE_SET_SOFT_MUTE:
if (o->thread_info.muted != o->muted) {
o->thread_info.muted = o->muted;
}
return 0;
}
return -PA_ERR_NOTIMPLEMENTED;
}
/* Called from main context */
void pa_source_output_send_event(pa_source_output *o, const char *event, pa_proplist *data) {
pa_proplist *pl = NULL;
pa_source_output_send_event_hook_data hook_data;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert(event);
if (!o->send_event)
return;
if (!data)
data = pl = pa_proplist_new();
hook_data.source_output = o;
hook_data.data = data;
hook_data.event = event;
if (pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_SEND_EVENT], &hook_data) < 0)
goto finish;
o->send_event(o, event, data);
finish:
if (pl)
pa_proplist_free(pl);
}
/* Called from main context */
/* Updates the source output's resampler with whatever the current source
* requires -- useful when the underlying source's sample spec might have changed */
int pa_source_output_update_resampler(pa_source_output *o) {
pa_resampler *new_resampler;
char *memblockq_name;
size_t resampler_history;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
if (o->thread_info.resampler &&
pa_sample_spec_equal(pa_resampler_input_sample_spec(o->thread_info.resampler), &o->source->sample_spec) &&
pa_channel_map_equal(pa_resampler_input_channel_map(o->thread_info.resampler), &o->source->channel_map))
new_resampler = o->thread_info.resampler;
else if (!pa_source_output_is_passthrough(o) &&
((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&o->sample_spec, &o->source->sample_spec) ||
!pa_channel_map_equal(&o->channel_map, &o->source->channel_map))) {
new_resampler = pa_resampler_new(o->core->mempool,
&o->source->sample_spec, &o->source->channel_map,
&o->sample_spec, &o->channel_map,
o->core->lfe_crossover_freq,
o->requested_resample_method,
((o->flags & PA_SOURCE_OUTPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((o->flags & PA_SOURCE_OUTPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(o->core->disable_remixing || (o->flags & PA_SOURCE_OUTPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
(o->core->remixing_use_all_sink_channels ? 0 : PA_RESAMPLER_NO_FILL_SINK) |
(o->core->remixing_produce_lfe ? PA_RESAMPLER_PRODUCE_LFE : 0) |
(o->core->remixing_consume_lfe ? PA_RESAMPLER_CONSUME_LFE : 0));
if (!new_resampler) {
pa_log_warn("Unsupported resampling operation.");
return -PA_ERR_NOTSUPPORTED;
}
} else
new_resampler = NULL;
if (new_resampler == o->thread_info.resampler)
return 0;
if (o->thread_info.resampler)
pa_resampler_free(o->thread_info.resampler);
o->thread_info.resampler = new_resampler;
pa_memblockq_free(o->thread_info.delay_memblockq);
memblockq_name = pa_sprintf_malloc("source output delay_memblockq [%u]", o->index);
o->thread_info.delay_memblockq = pa_memblockq_new(
memblockq_name,
0,
MEMBLOCKQ_MAXLENGTH,
0,
&o->source->sample_spec,
0,
1,
0,
&o->source->silence);
pa_xfree(memblockq_name);
resampler_history = (uint64_t) PA_RESAMPLER_MAX_DELAY_USEC * o->source->sample_spec.rate / PA_USEC_PER_SEC;
resampler_history *= pa_frame_size(&o->source->sample_spec);
pa_memblockq_set_maxrewind(o->thread_info.delay_memblockq, resampler_history + pa_source_get_max_rewind(o->source));
o->actual_resample_method = new_resampler ? pa_resampler_get_method(new_resampler) : PA_RESAMPLER_INVALID;
pa_log_debug("Updated resampler for source output %d", o->index);
return 0;
}
/* Called from the IO thread. */
void pa_source_output_attach(pa_source_output *o) {
pa_assert(o);
pa_assert(!o->thread_info.attached);
o->thread_info.attached = true;
if (o->attach)
o->attach(o);
}
/* Called from the IO thread. */
void pa_source_output_detach(pa_source_output *o) {
pa_assert(o);
if (!o->thread_info.attached)
return;
o->thread_info.attached = false;
if (o->detach)
o->detach(o);
}
/* Called from the main thread. */
void pa_source_output_set_volume_direct(pa_source_output *o, 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(o);
pa_assert(volume);
old_volume = o->volume;
if (pa_cvolume_equal(volume, &old_volume))
return;
o->volume = *volume;
pa_log_debug("The volume of source output %u changed from %s to %s.", o->index,
pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &o->channel_map, true),
pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &o->channel_map, true));
if (o->volume_changed)
o->volume_changed(o);
pa_subscription_post(o->core, PA_SUBSCRIPTION_EVENT_SOURCE_OUTPUT|PA_SUBSCRIPTION_EVENT_CHANGE, o->index);
pa_hook_fire(&o->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_VOLUME_CHANGED], o);
}
/* Called from the main thread. */
void pa_source_output_set_reference_ratio(pa_source_output *o, const pa_cvolume *ratio) {
pa_cvolume old_ratio;
char old_ratio_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
char new_ratio_str[PA_CVOLUME_SNPRINT_VERBOSE_MAX];
pa_assert(o);
pa_assert(ratio);
old_ratio = o->reference_ratio;
if (pa_cvolume_equal(ratio, &old_ratio))
return;
o->reference_ratio = *ratio;
if (!PA_SOURCE_OUTPUT_IS_LINKED(o->state))
return;
pa_log_debug("Source output %u reference ratio changed from %s to %s.", o->index,
pa_cvolume_snprint_verbose(old_ratio_str, sizeof(old_ratio_str), &old_ratio, &o->channel_map, true),
pa_cvolume_snprint_verbose(new_ratio_str, sizeof(new_ratio_str), ratio, &o->channel_map, true));
}
/* Called from the main thread.
*
* This is called when e.g. module-stream-restore wants to change the preferred
* source. As a side effect the stream is moved to the new preferred source.
* Note that things can work also in the other direction: if the user moves
* a stream, as a side effect the preferred source is changed. This could cause
* an infinite loop, but it's avoided by these two measures:
* - When pa_source_output_set_preferred_source() is called, it calls
* pa_source_output_move_to() with save=false, which avoids the recursive
* pa_source_output_set_preferred_source() call.
* - When the primary operation is to move a stream,
* pa_source_output_finish_move() calls set_preferred_source() instead of
* pa_source_output_set_preferred_source(). set_preferred_source() doesn't
* move the stream as a side effect.
*/
void pa_source_output_set_preferred_source(pa_source_output *o, pa_source *s) {
pa_assert(o);
if (s) {
set_preferred_source(o, s->name);
pa_source_output_move_to(o, s, false);
} else {
set_preferred_source(o, NULL);
pa_source_output_move_to(o, o->core->default_source, false);
}
}
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