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pulseaudio/src/pulsecore/sink-input.c

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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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <pulse/utf8.h>
#include <pulse/xmalloc.h>
#include <pulse/util.h>
#include <pulse/internal.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/play-memblockq.h>
#include <pulsecore/namereg.h>
#include <pulsecore/core-util.h>
#include "sink-input.h"
/* #define SINK_INPUT_DEBUG */
#define MEMBLOCKQ_MAXLENGTH (32*1024*1024)
#define CONVERT_BUFFER_LENGTH (PA_PAGE_SIZE)
PA_DEFINE_PUBLIC_CLASS(pa_sink_input, pa_msgobject);
struct volume_factor_entry {
char *key;
pa_cvolume volume;
};
static struct volume_factor_entry *volume_factor_entry_new(const char *key, const pa_cvolume *volume) {
struct volume_factor_entry *entry;
pa_assert(key);
pa_assert(volume);
entry = pa_xnew(struct volume_factor_entry, 1);
entry->key = pa_xstrdup(key);
entry->volume = *volume;
return entry;
}
static void volume_factor_entry_free(struct volume_factor_entry *volume_entry) {
pa_assert(volume_entry);
pa_xfree(volume_entry->key);
pa_xfree(volume_entry);
}
static void volume_factor_from_hashmap(pa_cvolume *v, pa_hashmap *items, uint8_t channels) {
struct volume_factor_entry *entry;
void *state = NULL;
pa_cvolume_reset(v, channels);
PA_HASHMAP_FOREACH(entry, items, state)
pa_sw_cvolume_multiply(v, v, &entry->volume);
}
static void sink_input_free(pa_object *o);
static void set_real_ratio(pa_sink_input *i, const pa_cvolume *v);
static int check_passthrough_connection(bool passthrough, pa_sink *dest) {
if (pa_sink_is_passthrough(dest)) {
pa_log_warn("Sink is already connected to PASSTHROUGH input");
return -PA_ERR_BUSY;
}
/* If current input(s) exist, check new input is not PASSTHROUGH */
if (pa_idxset_size(dest->inputs) > 0 && passthrough) {
pa_log_warn("Sink is already connected, cannot accept new PASSTHROUGH INPUT");
return -PA_ERR_BUSY;
}
return PA_OK;
}
pa_sink_input_new_data* pa_sink_input_new_data_init(pa_sink_input_new_data *data) {
pa_assert(data);
pa_zero(*data);
data->resample_method = PA_RESAMPLER_INVALID;
data->proplist = pa_proplist_new();
data->volume_writable = true;
data->volume_factor_items = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL,
(pa_free_cb_t) volume_factor_entry_free);
data->volume_factor_sink_items = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL,
(pa_free_cb_t) volume_factor_entry_free);
return data;
}
void pa_sink_input_new_data_set_sample_spec(pa_sink_input_new_data *data, const pa_sample_spec *spec) {
pa_assert(data);
if ((data->sample_spec_is_set = !!spec))
data->sample_spec = *spec;
}
void pa_sink_input_new_data_set_channel_map(pa_sink_input_new_data *data, const pa_channel_map *map) {
pa_assert(data);
if ((data->channel_map_is_set = !!map))
data->channel_map = *map;
}
bool pa_sink_input_new_data_is_passthrough(pa_sink_input_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_SINK_INPUT_PASSTHROUGH))
return true;
return false;
}
void pa_sink_input_new_data_set_volume(pa_sink_input_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_sink_input_new_data_add_volume_factor(pa_sink_input_new_data *data, const char *key, const pa_cvolume *volume_factor) {
struct volume_factor_entry *v;
pa_assert(data);
pa_assert(key);
pa_assert(volume_factor);
v = volume_factor_entry_new(key, volume_factor);
pa_assert_se(pa_hashmap_put(data->volume_factor_items, v->key, v) >= 0);
}
void pa_sink_input_new_data_add_volume_factor_sink(pa_sink_input_new_data *data, const char *key, const pa_cvolume *volume_factor) {
struct volume_factor_entry *v;
pa_assert(data);
pa_assert(key);
pa_assert(volume_factor);
v = volume_factor_entry_new(key, volume_factor);
pa_assert_se(pa_hashmap_put(data->volume_factor_sink_items, v->key, v) >= 0);
}
void pa_sink_input_new_data_set_muted(pa_sink_input_new_data *data, bool mute) {
pa_assert(data);
data->muted_is_set = true;
data->muted = !!mute;
}
bool pa_sink_input_new_data_set_sink(pa_sink_input_new_data *data, pa_sink *s, bool save) {
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->sink = s;
data->save_sink = save;
} else {
/* Extended API: let's see if this sink supports the formats the client can provide */
formats = pa_sink_check_formats(s, data->req_formats);
if (formats && !pa_idxset_isempty(formats)) {
/* Sink supports at least one of the requested formats */
data->sink = s;
data->save_sink = save;
if (data->nego_formats)
pa_idxset_free(data->nego_formats, (pa_free_cb_t) pa_format_info_free);
data->nego_formats = formats;
} else {
/* Sink 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_sink_input_new_data_set_formats(pa_sink_input_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->sink) {
/* Trigger format negotiation */
return pa_sink_input_new_data_set_sink(data, data->sink, data->save_sink);
}
return true;
}
void pa_sink_input_new_data_done(pa_sink_input_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->volume_factor_items)
pa_hashmap_free(data->volume_factor_items);
if (data->volume_factor_sink_items)
pa_hashmap_free(data->volume_factor_sink_items);
pa_proplist_free(data->proplist);
}
/* Called from main context */
static void reset_callbacks(pa_sink_input *i) {
pa_assert(i);
i->pop = NULL;
i->process_underrun = NULL;
i->process_rewind = NULL;
i->update_max_rewind = NULL;
i->update_max_request = NULL;
i->update_sink_requested_latency = NULL;
i->update_sink_latency_range = NULL;
i->update_sink_fixed_latency = NULL;
i->attach = NULL;
i->detach = NULL;
i->suspend = NULL;
i->suspend_within_thread = NULL;
i->moving = NULL;
i->kill = NULL;
i->get_latency = NULL;
i->state_change = NULL;
i->may_move_to = NULL;
i->send_event = NULL;
i->volume_changed = NULL;
i->mute_changed = NULL;
}
/* Called from main context */
int pa_sink_input_new(
pa_sink_input **_i,
pa_core *core,
pa_sink_input_new_data *data) {
pa_sink_input *i;
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;
char *memblockq_name;
pa_assert(_i);
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->origin_sink && (data->origin_sink->flags & PA_SINK_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_SINK_INPUT_FIX_FORMAT),
!(data->flags & PA_SINK_INPUT_FIX_RATE),
!(data->flags & PA_SINK_INPUT_FIX_CHANNELS));
if (!f)
return -PA_ERR_INVALID;
formats = pa_idxset_new(NULL, NULL);
pa_idxset_put(formats, f, NULL);
pa_sink_input_new_data_set_formats(data, formats);
}
if ((r = pa_hook_fire(&core->hooks[PA_CORE_HOOK_SINK_INPUT_NEW], data)) < 0)
return r;
pa_return_val_if_fail(!data->driver || pa_utf8_valid(data->driver), -PA_ERR_INVALID);
if (!data->sink) {
pa_sink *sink = pa_namereg_get(core, NULL, PA_NAMEREG_SINK);
pa_return_val_if_fail(sink, -PA_ERR_NOENTITY);
pa_sink_input_new_data_set_sink(data, sink, 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)) {
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("Sink 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_SINK_IS_LINKED(pa_sink_get_state(data->sink)), -PA_ERR_BADSTATE);
pa_return_val_if_fail(!data->sync_base || (data->sync_base->sink == data->sink
&& pa_sink_input_get_state(data->sync_base) == PA_SINK_INPUT_CORKED),
-PA_ERR_INVALID);
/* Routing is done. We have a sink and a format. */
if (data->volume_is_set && pa_format_info_is_pcm(data->format)) {
/* 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;
}
/* 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->sink->sample_spec,
&data->sink->channel_map);
if (r < 0)
return r;
r = check_passthrough_connection(pa_sink_input_new_data_is_passthrough(data), data->sink);
if (r != PA_OK)
return r;
/* Don't restore (or save) stream volume for passthrough streams and
* prevent attenuation/gain */
if (pa_sink_input_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 (data->volume_is_set)
/* 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->muted_is_set)
data->muted = false;
if (!(data->flags & PA_SINK_INPUT_VARIABLE_RATE) &&
!pa_sample_spec_equal(&data->sample_spec, &data->sink->sample_spec)) {
/* try to change sink rate. This is done before the FIXATE hook since
module-suspend-on-idle can resume a sink */
pa_log_info("Trying to change sample rate");
if (pa_sink_update_rate(data->sink, data->sample_spec.rate, pa_sink_input_new_data_is_passthrough(data)) >= 0)
pa_log_info("Rate changed to %u Hz", data->sink->sample_spec.rate);
}
if (pa_sink_input_new_data_is_passthrough(data) &&
!pa_sample_spec_equal(&data->sample_spec, &data->sink->sample_spec)) {
/* rate update failed, or other parts of sample spec didn't match */
pa_log_debug("Could not update sink 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_SINK_INPUT_FIXATE], data)) < 0)
return r;
if ((data->flags & PA_SINK_INPUT_NO_CREATE_ON_SUSPEND) &&
pa_sink_get_state(data->sink) == PA_SINK_SUSPENDED) {
pa_log_warn("Failed to create sink input: sink is suspended.");
return -PA_ERR_BADSTATE;
}
if (pa_idxset_size(data->sink->inputs) >= PA_MAX_INPUTS_PER_SINK) {
pa_log_warn("Failed to create sink input: too many inputs per sink.");
return -PA_ERR_TOOLARGE;
}
if ((data->flags & PA_SINK_INPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&data->sample_spec, &data->sink->sample_spec) ||
!pa_channel_map_equal(&data->channel_map, &data->sink->channel_map)) {
/* Note: for passthrough content we need to adjust the output rate to that of the current sink-input */
if (!pa_sink_input_new_data_is_passthrough(data)) /* no resampler for passthrough content */
if (!(resampler = pa_resampler_new(
core->mempool,
&data->sample_spec, &data->channel_map,
&data->sink->sample_spec, &data->sink->channel_map,
data->resample_method,
((data->flags & PA_SINK_INPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((data->flags & PA_SINK_INPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(core->disable_remixing || (data->flags & PA_SINK_INPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
(core->disable_lfe_remixing ? PA_RESAMPLER_NO_LFE : 0)))) {
pa_log_warn("Unsupported resampling operation.");
return -PA_ERR_NOTSUPPORTED;
}
}
i = pa_msgobject_new(pa_sink_input);
i->parent.parent.free = sink_input_free;
i->parent.process_msg = pa_sink_input_process_msg;
i->core = core;
i->state = PA_SINK_INPUT_INIT;
i->flags = data->flags;
i->proplist = pa_proplist_copy(data->proplist);
i->driver = pa_xstrdup(pa_path_get_filename(data->driver));
i->module = data->module;
i->sink = data->sink;
i->origin_sink = data->origin_sink;
i->client = data->client;
i->requested_resample_method = data->resample_method;
i->actual_resample_method = resampler ? pa_resampler_get_method(resampler) : PA_RESAMPLER_INVALID;
i->sample_spec = data->sample_spec;
i->channel_map = data->channel_map;
i->format = pa_format_info_copy(data->format);
if (!data->volume_is_absolute && pa_sink_flat_volume_enabled(i->sink)) {
pa_cvolume remapped;
/* When the 'absolute' bool is not set then we'll treat the volume
* as relative to the sink volume even in flat volume mode */
remapped = data->sink->reference_volume;
pa_cvolume_remap(&remapped, &data->sink->channel_map, &data->channel_map);
pa_sw_cvolume_multiply(&i->volume, &data->volume, &remapped);
} else
i->volume = data->volume;
i->volume_factor_items = data->volume_factor_items;
data->volume_factor_items = NULL;
volume_factor_from_hashmap(&i->volume_factor, i->volume_factor_items, i->sample_spec.channels);
i->volume_factor_sink_items = data->volume_factor_sink_items;
data->volume_factor_sink_items = NULL;
volume_factor_from_hashmap(&i->volume_factor_sink, i->volume_factor_sink_items, i->sink->sample_spec.channels);
i->real_ratio = i->reference_ratio = data->volume;
pa_cvolume_reset(&i->soft_volume, i->sample_spec.channels);
pa_cvolume_reset(&i->real_ratio, i->sample_spec.channels);
i->volume_writable = data->volume_writable;
i->save_volume = data->save_volume;
i->save_sink = data->save_sink;
i->save_muted = data->save_muted;
i->muted = data->muted;
if (data->sync_base) {
i->sync_next = data->sync_base->sync_next;
i->sync_prev = data->sync_base;
if (data->sync_base->sync_next)
data->sync_base->sync_next->sync_prev = i;
data->sync_base->sync_next = i;
} else
i->sync_next = i->sync_prev = NULL;
i->direct_outputs = pa_idxset_new(NULL, NULL);
reset_callbacks(i);
i->userdata = NULL;
i->thread_info.state = i->state;
i->thread_info.attached = false;
pa_atomic_store(&i->thread_info.drained, 1);
i->thread_info.sample_spec = i->sample_spec;
i->thread_info.resampler = resampler;
i->thread_info.soft_volume = i->soft_volume;
i->thread_info.muted = i->muted;
i->thread_info.requested_sink_latency = (pa_usec_t) -1;
i->thread_info.rewrite_nbytes = 0;
i->thread_info.rewrite_flush = false;
i->thread_info.dont_rewind_render = false;
i->thread_info.underrun_for = (uint64_t) -1;
i->thread_info.underrun_for_sink = 0;
i->thread_info.playing_for = 0;
i->thread_info.direct_outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
pa_assert_se(pa_idxset_put(core->sink_inputs, i, &i->index) == 0);
pa_assert_se(pa_idxset_put(i->sink->inputs, pa_sink_input_ref(i), NULL) == 0);
if (i->client)
pa_assert_se(pa_idxset_put(i->client->sink_inputs, i, NULL) >= 0);
memblockq_name = pa_sprintf_malloc("sink input render_memblockq [%u]", i->index);
i->thread_info.render_memblockq = pa_memblockq_new(
memblockq_name,
0,
MEMBLOCKQ_MAXLENGTH,
0,
&i->sink->sample_spec,
0,
1,
0,
&i->sink->silence);
pa_xfree(memblockq_name);
pt = pa_proplist_to_string_sep(i->proplist, "\n ");
pa_log_info("Created input %u \"%s\" on %s with sample spec %s and channel map %s\n %s",
i->index,
pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME)),
i->sink->name,
pa_sample_spec_snprint(st, sizeof(st), &i->sample_spec),
pa_channel_map_snprint(cm, sizeof(cm), &i->channel_map),
pt);
pa_xfree(pt);
/* Don't forget to call pa_sink_input_put! */
*_i = i;
return 0;
}
/* Called from main context */
static void update_n_corked(pa_sink_input *i, pa_sink_input_state_t state) {
pa_assert(i);
pa_assert_ctl_context();
if (!i->sink)
return;
if (i->state == PA_SINK_INPUT_CORKED && state != PA_SINK_INPUT_CORKED)
pa_assert_se(i->sink->n_corked -- >= 1);
else if (i->state != PA_SINK_INPUT_CORKED && state == PA_SINK_INPUT_CORKED)
i->sink->n_corked++;
}
/* Called from main context */
static void sink_input_set_state(pa_sink_input *i, pa_sink_input_state_t state) {
pa_sink_input *ssync;
pa_assert(i);
pa_assert_ctl_context();
if (state == PA_SINK_INPUT_DRAINED)
state = PA_SINK_INPUT_RUNNING;
if (i->state == state)
return;
if (i->state == PA_SINK_INPUT_CORKED && state == PA_SINK_INPUT_RUNNING && pa_sink_used_by(i->sink) == 0 &&
!pa_sample_spec_equal(&i->sample_spec, &i->sink->sample_spec)) {
/* We were uncorked and the sink was not playing anything -- let's try
* to update the sample rate to avoid resampling */
pa_sink_update_rate(i->sink, i->sample_spec.rate, pa_sink_input_is_passthrough(i));
}
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) == 0);
update_n_corked(i, state);
i->state = state;
for (ssync = i->sync_prev; ssync; ssync = ssync->sync_prev) {
update_n_corked(ssync, state);
ssync->state = state;
}
for (ssync = i->sync_next; ssync; ssync = ssync->sync_next) {
update_n_corked(ssync, state);
ssync->state = state;
}
if (state != PA_SINK_INPUT_UNLINKED) {
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], i);
for (ssync = i->sync_prev; ssync; ssync = ssync->sync_prev)
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], ssync);
for (ssync = i->sync_next; ssync; ssync = ssync->sync_next)
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_STATE_CHANGED], ssync);
if (PA_SINK_INPUT_IS_LINKED(state))
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
}
pa_sink_update_status(i->sink);
}
/* Called from main context */
void pa_sink_input_unlink(pa_sink_input *i) {
bool linked;
pa_source_output *o, *p = NULL;
pa_assert(i);
pa_assert_ctl_context();
/* See pa_sink_unlink() for a couple of comments how this function
* works */
pa_sink_input_ref(i);
linked = PA_SINK_INPUT_IS_LINKED(i->state);
if (linked)
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK], i);
if (i->sync_prev)
i->sync_prev->sync_next = i->sync_next;
if (i->sync_next)
i->sync_next->sync_prev = i->sync_prev;
i->sync_prev = i->sync_next = NULL;
pa_idxset_remove_by_data(i->core->sink_inputs, i, NULL);
if (i->sink)
if (pa_idxset_remove_by_data(i->sink->inputs, i, NULL))
pa_sink_input_unref(i);
if (i->client)
pa_idxset_remove_by_data(i->client->sink_inputs, i, NULL);
while ((o = pa_idxset_first(i->direct_outputs, NULL))) {
pa_assert(o != p);
pa_source_output_kill(o);
p = o;
}
update_n_corked(i, PA_SINK_INPUT_UNLINKED);
i->state = PA_SINK_INPUT_UNLINKED;
if (linked && i->sink) {
if (pa_sink_input_is_passthrough(i))
pa_sink_leave_passthrough(i->sink);
/* We might need to update the sink's volume if we are in flat volume mode. */
if (pa_sink_flat_volume_enabled(i->sink))
pa_sink_set_volume(i->sink, NULL, false, false);
if (i->sink->asyncmsgq)
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_REMOVE_INPUT, i, 0, NULL) == 0);
}
reset_callbacks(i);
if (linked) {
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_REMOVE, i->index);
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_UNLINK_POST], i);
}
if (i->sink) {
if (PA_SINK_IS_LINKED(pa_sink_get_state(i->sink)))
pa_sink_update_status(i->sink);
i->sink = NULL;
}
pa_core_maybe_vacuum(i->core);
pa_sink_input_unref(i);
}
/* Called from main context */
static void sink_input_free(pa_object *o) {
pa_sink_input* i = PA_SINK_INPUT(o);
pa_assert(i);
pa_assert_ctl_context();
pa_assert(pa_sink_input_refcnt(i) == 0);
if (PA_SINK_INPUT_IS_LINKED(i->state))
pa_sink_input_unlink(i);
pa_log_info("Freeing input %u \"%s\"", i->index,
i->proplist ? pa_strnull(pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME)) : "");
/* Side note: this function must be able to destruct properly any
* kind of sink input in any state, even those which are
* "half-moved" or are connected to sinks that have no asyncmsgq
* and are hence half-destructed themselves! */
if (i->thread_info.render_memblockq)
pa_memblockq_free(i->thread_info.render_memblockq);
if (i->thread_info.resampler)
pa_resampler_free(i->thread_info.resampler);
if (i->format)
pa_format_info_free(i->format);
if (i->proplist)
pa_proplist_free(i->proplist);
if (i->direct_outputs)
pa_idxset_free(i->direct_outputs, NULL);
if (i->thread_info.direct_outputs)
pa_hashmap_free(i->thread_info.direct_outputs);
if (i->volume_factor_items)
pa_hashmap_free(i->volume_factor_items);
if (i->volume_factor_sink_items)
pa_hashmap_free(i->volume_factor_sink_items);
pa_xfree(i->driver);
pa_xfree(i);
}
/* Called from main context */
void pa_sink_input_put(pa_sink_input *i) {
pa_sink_input_state_t state;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(i->state == PA_SINK_INPUT_INIT);
/* The following fields must be initialized properly */
pa_assert(i->pop);
pa_assert(i->process_rewind);
pa_assert(i->kill);
state = i->flags & PA_SINK_INPUT_START_CORKED ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING;
update_n_corked(i, state);
i->state = state;
/* We might need to update the sink's volume if we are in flat volume mode. */
if (pa_sink_flat_volume_enabled(i->sink))
pa_sink_set_volume(i->sink, NULL, false, i->save_volume);
else {
if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
pa_assert(pa_cvolume_is_norm(&i->volume));
pa_assert(pa_cvolume_is_norm(&i->reference_ratio));
}
set_real_ratio(i, &i->volume);
}
if (pa_sink_input_is_passthrough(i))
pa_sink_enter_passthrough(i->sink);
i->thread_info.soft_volume = i->soft_volume;
i->thread_info.muted = i->muted;
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_ADD_INPUT, i, 0, NULL) == 0);
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_NEW, i->index);
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], i);
pa_sink_update_status(i->sink);
}
/* Called from main context */
void pa_sink_input_kill(pa_sink_input*i) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
i->kill(i);
}
/* Called from main context */
pa_usec_t pa_sink_input_get_latency(pa_sink_input *i, pa_usec_t *sink_latency) {
pa_usec_t r[2] = { 0, 0 };
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_GET_LATENCY, r, 0, NULL) == 0);
if (i->get_latency)
r[0] += i->get_latency(i);
if (sink_latency)
*sink_latency = r[1];
return r[0];
}
/* Called from thread context */
void pa_sink_input_peek(pa_sink_input *i, size_t slength /* in sink bytes */, pa_memchunk *chunk, pa_cvolume *volume) {
bool do_volume_adj_here, need_volume_factor_sink;
bool volume_is_norm;
size_t block_size_max_sink, block_size_max_sink_input;
size_t ilength;
size_t ilength_full;
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(slength, &i->sink->sample_spec));
pa_assert(chunk);
pa_assert(volume);
#ifdef SINK_INPUT_DEBUG
pa_log_debug("peek");
#endif
block_size_max_sink_input = i->thread_info.resampler ?
pa_resampler_max_block_size(i->thread_info.resampler) :
pa_frame_align(pa_mempool_block_size_max(i->core->mempool), &i->sample_spec);
block_size_max_sink = pa_frame_align(pa_mempool_block_size_max(i->core->mempool), &i->sink->sample_spec);
/* Default buffer size */
if (slength <= 0)
slength = pa_frame_align(CONVERT_BUFFER_LENGTH, &i->sink->sample_spec);
if (slength > block_size_max_sink)
slength = block_size_max_sink;
if (i->thread_info.resampler) {
ilength = pa_resampler_request(i->thread_info.resampler, slength);
if (ilength <= 0)
ilength = pa_frame_align(CONVERT_BUFFER_LENGTH, &i->sample_spec);
} else
ilength = slength;
/* Length corresponding to slength (without limiting to
* block_size_max_sink_input). */
ilength_full = ilength;
if (ilength > block_size_max_sink_input)
ilength = block_size_max_sink_input;
/* If the channel maps of the sink and this stream differ, we need
* to adjust the volume *before* we resample. Otherwise we can do
* it after and leave it for the sink code */
do_volume_adj_here = !pa_channel_map_equal(&i->channel_map, &i->sink->channel_map);
volume_is_norm = pa_cvolume_is_norm(&i->thread_info.soft_volume) && !i->thread_info.muted;
need_volume_factor_sink = !pa_cvolume_is_norm(&i->volume_factor_sink);
while (!pa_memblockq_is_readable(i->thread_info.render_memblockq)) {
pa_memchunk tchunk;
/* There's nothing in our render queue. We need to fill it up
* with data from the implementor. */
if (i->thread_info.state == PA_SINK_INPUT_CORKED ||
i->pop(i, ilength, &tchunk) < 0) {
/* OK, we're corked or the implementor didn't give us any
* data, so let's just hand out silence */
pa_atomic_store(&i->thread_info.drained, 1);
pa_memblockq_seek(i->thread_info.render_memblockq, (int64_t) slength, PA_SEEK_RELATIVE, true);
i->thread_info.playing_for = 0;
if (i->thread_info.underrun_for != (uint64_t) -1) {
i->thread_info.underrun_for += ilength_full;
i->thread_info.underrun_for_sink += slength;
}
break;
}
pa_atomic_store(&i->thread_info.drained, 0);
pa_assert(tchunk.length > 0);
pa_assert(tchunk.memblock);
i->thread_info.underrun_for = 0;
i->thread_info.underrun_for_sink = 0;
i->thread_info.playing_for += tchunk.length;
while (tchunk.length > 0) {
pa_memchunk wchunk;
bool nvfs = need_volume_factor_sink;
wchunk = tchunk;
pa_memblock_ref(wchunk.memblock);
if (wchunk.length > block_size_max_sink_input)
wchunk.length = block_size_max_sink_input;
/* It might be necessary to adjust the volume here */
if (do_volume_adj_here && !volume_is_norm) {
pa_memchunk_make_writable(&wchunk, 0);
if (i->thread_info.muted) {
pa_silence_memchunk(&wchunk, &i->thread_info.sample_spec);
nvfs = false;
} else if (!i->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, &i->thread_info.soft_volume, &i->volume_factor_sink);
pa_volume_memchunk(&wchunk, &i->thread_info.sample_spec, &v);
nvfs = false;
} else
pa_volume_memchunk(&wchunk, &i->thread_info.sample_spec, &i->thread_info.soft_volume);
}
if (!i->thread_info.resampler) {
if (nvfs) {
pa_memchunk_make_writable(&wchunk, 0);
pa_volume_memchunk(&wchunk, &i->sink->sample_spec, &i->volume_factor_sink);
}
pa_memblockq_push_align(i->thread_info.render_memblockq, &wchunk);
} else {
pa_memchunk rchunk;
pa_resampler_run(i->thread_info.resampler, &wchunk, &rchunk);
#ifdef SINK_INPUT_DEBUG
pa_log_debug("pushing %lu", (unsigned long) rchunk.length);
#endif
if (rchunk.memblock) {
if (nvfs) {
pa_memchunk_make_writable(&rchunk, 0);
pa_volume_memchunk(&rchunk, &i->sink->sample_spec, &i->volume_factor_sink);
}
pa_memblockq_push_align(i->thread_info.render_memblockq, &rchunk);
pa_memblock_unref(rchunk.memblock);
}
}
pa_memblock_unref(wchunk.memblock);
tchunk.index += wchunk.length;
tchunk.length -= wchunk.length;
}
pa_memblock_unref(tchunk.memblock);
}
pa_assert_se(pa_memblockq_peek(i->thread_info.render_memblockq, chunk) >= 0);
pa_assert(chunk->length > 0);
pa_assert(chunk->memblock);
#ifdef SINK_INPUT_DEBUG
pa_log_debug("peeking %lu", (unsigned long) chunk->length);
#endif
if (chunk->length > block_size_max_sink)
chunk->length = block_size_max_sink;
/* Let's see if we had to apply the volume adjustment ourselves,
* or if this can be done by the sink for us */
if (do_volume_adj_here)
/* We had different channel maps, so we already did the adjustment */
pa_cvolume_reset(volume, i->sink->sample_spec.channels);
else if (i->thread_info.muted)
/* We've both the same channel map, so let's have the sink do the adjustment for us*/
pa_cvolume_mute(volume, i->sink->sample_spec.channels);
else
*volume = i->thread_info.soft_volume;
}
/* Called from thread context */
void pa_sink_input_drop(pa_sink_input *i, size_t nbytes /* in sink sample spec */) {
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
pa_assert(nbytes > 0);
#ifdef SINK_INPUT_DEBUG
pa_log_debug("dropping %lu", (unsigned long) nbytes);
#endif
pa_memblockq_drop(i->thread_info.render_memblockq, nbytes);
}
/* Called from thread context */
bool pa_sink_input_process_underrun(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
if (pa_memblockq_is_readable(i->thread_info.render_memblockq))
return false;
if (i->process_underrun && i->process_underrun(i)) {
/* All valid data has been played back, so we can empty this queue. */
pa_memblockq_silence(i->thread_info.render_memblockq);
return true;
}
return false;
}
/* Called from thread context */
void pa_sink_input_process_rewind(pa_sink_input *i, size_t nbytes /* in sink sample spec */) {
size_t lbq;
bool called = false;
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
#ifdef SINK_INPUT_DEBUG
pa_log_debug("rewind(%lu, %lu)", (unsigned long) nbytes, (unsigned long) i->thread_info.rewrite_nbytes);
#endif
lbq = pa_memblockq_get_length(i->thread_info.render_memblockq);
if (nbytes > 0 && !i->thread_info.dont_rewind_render) {
pa_log_debug("Have to rewind %lu bytes on render memblockq.", (unsigned long) nbytes);
pa_memblockq_rewind(i->thread_info.render_memblockq, nbytes);
}
if (i->thread_info.rewrite_nbytes == (size_t) -1) {
/* We were asked to drop all buffered data, and rerequest new
* data from implementor the next time peek() is called */
pa_memblockq_flush_write(i->thread_info.render_memblockq, true);
} else if (i->thread_info.rewrite_nbytes > 0) {
size_t max_rewrite, amount;
/* Calculate how much make sense to rewrite at most */
max_rewrite = nbytes + lbq;
/* Transform into local domain */
if (i->thread_info.resampler)
max_rewrite = pa_resampler_request(i->thread_info.resampler, max_rewrite);
/* Calculate how much of the rewinded data should actually be rewritten */
amount = PA_MIN(i->thread_info.rewrite_nbytes, max_rewrite);
if (amount > 0) {
pa_log_debug("Have to rewind %lu bytes on implementor.", (unsigned long) amount);
/* Tell the implementor */
if (i->process_rewind)
i->process_rewind(i, amount);
called = true;
/* Convert back to sink domain */
if (i->thread_info.resampler)
amount = pa_resampler_result(i->thread_info.resampler, amount);
if (amount > 0)
/* Ok, now update the write pointer */
pa_memblockq_seek(i->thread_info.render_memblockq, - ((int64_t) amount), PA_SEEK_RELATIVE, true);
if (i->thread_info.rewrite_flush)
pa_memblockq_silence(i->thread_info.render_memblockq);
/* And reset the resampler */
if (i->thread_info.resampler)
pa_resampler_reset(i->thread_info.resampler);
}
}
if (!called)
if (i->process_rewind)
i->process_rewind(i, 0);
i->thread_info.rewrite_nbytes = 0;
i->thread_info.rewrite_flush = false;
i->thread_info.dont_rewind_render = false;
}
/* Called from thread context */
size_t pa_sink_input_get_max_rewind(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
return i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, i->sink->thread_info.max_rewind) : i->sink->thread_info.max_rewind;
}
/* Called from thread context */
size_t pa_sink_input_get_max_request(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
/* We're not verifying the status here, to allow this to be called
* in the state change handler between _INIT and _RUNNING */
return i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, i->sink->thread_info.max_request) : i->sink->thread_info.max_request;
}
/* Called from thread context */
void pa_sink_input_update_max_rewind(pa_sink_input *i, size_t nbytes /* in the sink's sample spec */) {
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
pa_memblockq_set_maxrewind(i->thread_info.render_memblockq, nbytes);
if (i->update_max_rewind)
i->update_max_rewind(i, i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, nbytes) : nbytes);
}
/* Called from thread context */
void pa_sink_input_update_max_request(pa_sink_input *i, size_t nbytes /* in the sink's sample spec */) {
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
pa_assert(PA_SINK_INPUT_IS_LINKED(i->thread_info.state));
pa_assert(pa_frame_aligned(nbytes, &i->sink->sample_spec));
if (i->update_max_request)
i->update_max_request(i, i->thread_info.resampler ? pa_resampler_request(i->thread_info.resampler, nbytes) : nbytes);
}
/* Called from thread context */
pa_usec_t pa_sink_input_set_requested_latency_within_thread(pa_sink_input *i, pa_usec_t usec) {
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
if (!(i->sink->flags & PA_SINK_DYNAMIC_LATENCY))
usec = i->sink->thread_info.fixed_latency;
if (usec != (pa_usec_t) -1)
usec = PA_CLAMP(usec, i->sink->thread_info.min_latency, i->sink->thread_info.max_latency);
i->thread_info.requested_sink_latency = usec;
pa_sink_invalidate_requested_latency(i->sink, true);
return usec;
}
/* Called from main context */
pa_usec_t pa_sink_input_set_requested_latency(pa_sink_input *i, pa_usec_t usec) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
if (PA_SINK_INPUT_IS_LINKED(i->state) && i->sink) {
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
return usec;
}
/* If this sink input is not realized yet or we are being moved,
* we have to touch the thread info data directly */
if (i->sink) {
if (!(i->sink->flags & PA_SINK_DYNAMIC_LATENCY))
usec = pa_sink_get_fixed_latency(i->sink);
if (usec != (pa_usec_t) -1) {
pa_usec_t min_latency, max_latency;
pa_sink_get_latency_range(i->sink, &min_latency, &max_latency);
usec = PA_CLAMP(usec, min_latency, max_latency);
}
}
i->thread_info.requested_sink_latency = usec;
return usec;
}
/* Called from main context */
pa_usec_t pa_sink_input_get_requested_latency(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
if (PA_SINK_INPUT_IS_LINKED(i->state) && i->sink) {
pa_usec_t usec = 0;
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
return usec;
}
/* If this sink input is not realized yet or we are being moved,
* we have to touch the thread info data directly */
return i->thread_info.requested_sink_latency;
}
/* Called from main context */
void pa_sink_input_set_volume(pa_sink_input *i, const pa_cvolume *volume, bool save, bool absolute) {
pa_cvolume v;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(volume);
pa_assert(pa_cvolume_valid(volume));
pa_assert(volume->channels == 1 || pa_cvolume_compatible(volume, &i->sample_spec));
pa_assert(i->volume_writable);
if (!absolute && pa_sink_flat_volume_enabled(i->sink)) {
v = i->sink->reference_volume;
pa_cvolume_remap(&v, &i->sink->channel_map, &i->channel_map);
if (pa_cvolume_compatible(volume, &i->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, &i->sample_spec)) {
v = i->volume;
volume = pa_cvolume_scale(&v, pa_cvolume_max(volume));
}
}
if (pa_cvolume_equal(volume, &i->volume)) {
i->save_volume = i->save_volume || save;
return;
}
pa_sink_input_set_volume_direct(i, volume);
i->save_volume = save;
if (pa_sink_flat_volume_enabled(i->sink)) {
/* We are in flat volume mode, so let's update all sink input
* volumes and update the flat volume of the sink */
pa_sink_set_volume(i->sink, NULL, true, save);
} else {
/* OK, we are in normal volume mode. The volume only affects
* ourselves */
set_real_ratio(i, volume);
i->reference_ratio = i->volume;
/* Copy the new soft_volume to the thread_info struct */
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_SOFT_VOLUME, NULL, 0, NULL) == 0);
}
}
void pa_sink_input_add_volume_factor(pa_sink_input *i, const char *key, const pa_cvolume *volume_factor) {
struct volume_factor_entry *v;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(volume_factor);
pa_assert(key);
pa_assert(pa_cvolume_valid(volume_factor));
pa_assert(volume_factor->channels == 1 || pa_cvolume_compatible(volume_factor, &i->sample_spec));
v = volume_factor_entry_new(key, volume_factor);
if (!pa_cvolume_compatible(volume_factor, &i->sample_spec))
pa_cvolume_set(&v->volume, i->sample_spec.channels, volume_factor->values[0]);
pa_assert_se(pa_hashmap_put(i->volume_factor_items, v->key, v) >= 0);
if (pa_hashmap_size(i->volume_factor_items) == 1)
i->volume_factor = v->volume;
else
pa_sw_cvolume_multiply(&i->volume_factor, &i->volume_factor, &v->volume);
pa_sw_cvolume_multiply(&i->soft_volume, &i->real_ratio, &i->volume_factor);
/* Copy the new soft_volume to the thread_info struct */
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_SOFT_VOLUME, NULL, 0, NULL) == 0);
}
/* Returns 0 if an entry was removed and -1 if no entry for the given key was
* found. */
int pa_sink_input_remove_volume_factor(pa_sink_input *i, const char *key) {
struct volume_factor_entry *v;
pa_sink_input_assert_ref(i);
pa_assert(key);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
if (pa_hashmap_remove_and_free(i->volume_factor_items, key) < 0)
return -1;
switch (pa_hashmap_size(i->volume_factor_items)) {
case 0:
pa_cvolume_reset(&i->volume_factor, i->sample_spec.channels);
break;
case 1:
v = pa_hashmap_first(i->volume_factor_items);
i->volume_factor = v->volume;
break;
default:
volume_factor_from_hashmap(&i->volume_factor, i->volume_factor_items, i->volume_factor.channels);
}
pa_sw_cvolume_multiply(&i->soft_volume, &i->real_ratio, &i->volume_factor);
/* Copy the new soft_volume to the thread_info struct */
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_SOFT_VOLUME, NULL, 0, NULL) == 0);
return 0;
}
/* Called from main context */
static void set_real_ratio(pa_sink_input *i, const pa_cvolume *v) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(!v || pa_cvolume_compatible(v, &i->sample_spec));
/* This basically calculates:
*
* i->real_ratio := v
* i->soft_volume := i->real_ratio * i->volume_factor */
if (v)
i->real_ratio = *v;
else
pa_cvolume_reset(&i->real_ratio, i->sample_spec.channels);
pa_sw_cvolume_multiply(&i->soft_volume, &i->real_ratio, &i->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_sink_input_is_passthrough(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
if (PA_UNLIKELY(!pa_format_info_is_pcm(i->format)))
return true;
if (PA_UNLIKELY(i->flags & PA_SINK_INPUT_PASSTHROUGH))
return true;
return false;
}
/* Called from main context */
bool pa_sink_input_is_volume_readable(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
return !pa_sink_input_is_passthrough(i);
}
/* Called from main context */
pa_cvolume *pa_sink_input_get_volume(pa_sink_input *i, pa_cvolume *volume, bool absolute) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(pa_sink_input_is_volume_readable(i));
if (absolute || !pa_sink_flat_volume_enabled(i->sink))
*volume = i->volume;
else
*volume = i->reference_ratio;
return volume;
}
/* Called from main context */
void pa_sink_input_set_mute(pa_sink_input *i, bool mute, bool save) {
bool old_mute;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
old_mute = i->muted;
if (mute == old_mute) {
i->save_muted |= save;
return;
}
i->muted = mute;
pa_log_debug("The mute of sink input %u changed from %s to %s.", i->index, pa_yes_no(old_mute), pa_yes_no(mute));
i->save_muted = save;
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_SOFT_MUTE, NULL, 0, NULL) == 0);
/* The mute status changed, let's tell people so */
if (i->mute_changed)
i->mute_changed(i);
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_MUTE_CHANGED], i);
}
/* Called from main thread */
void pa_sink_input_update_proplist(pa_sink_input *i, pa_update_mode_t mode, pa_proplist *p) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
if (p)
pa_proplist_update(i->proplist, mode, p);
if (PA_SINK_INPUT_IS_LINKED(i->state)) {
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_PROPLIST_CHANGED], i);
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
}
}
/* Called from main context */
void pa_sink_input_cork(pa_sink_input *i, bool b) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
sink_input_set_state(i, b ? PA_SINK_INPUT_CORKED : PA_SINK_INPUT_RUNNING);
}
/* Called from main context */
int pa_sink_input_set_rate(pa_sink_input *i, uint32_t rate) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_return_val_if_fail(i->thread_info.resampler, -PA_ERR_BADSTATE);
if (i->sample_spec.rate == rate)
return 0;
i->sample_spec.rate = rate;
pa_asyncmsgq_post(i->sink->asyncmsgq, PA_MSGOBJECT(i), PA_SINK_INPUT_MESSAGE_SET_RATE, PA_UINT_TO_PTR(rate), 0, NULL, NULL);
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
return 0;
}
/* Called from main context */
void pa_sink_input_set_name(pa_sink_input *i, const char *name) {
const char *old;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
if (!name && !pa_proplist_contains(i->proplist, PA_PROP_MEDIA_NAME))
return;
old = pa_proplist_gets(i->proplist, PA_PROP_MEDIA_NAME);
if (old && name && pa_streq(old, name))
return;
if (name)
pa_proplist_sets(i->proplist, PA_PROP_MEDIA_NAME, name);
else
pa_proplist_unset(i->proplist, PA_PROP_MEDIA_NAME);
if (PA_SINK_INPUT_IS_LINKED(i->state)) {
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_PROPLIST_CHANGED], i);
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
}
}
/* Called from main context */
pa_resample_method_t pa_sink_input_get_resample_method(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
return i->actual_resample_method;
}
/* Called from main context */
bool pa_sink_input_may_move(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
if (i->flags & PA_SINK_INPUT_DONT_MOVE)
return false;
if (i->sync_next || i->sync_prev) {
pa_log_warn("Moving synchronized streams not supported.");
return false;
}
return true;
}
static bool find_filter_sink_input(pa_sink_input *target, pa_sink *s) {
int i = 0;
while (s && s->input_to_master) {
if (s->input_to_master == target)
return true;
s = s->input_to_master->sink;
pa_assert(i++ < 100);
}
return false;
}
/* Called from main context */
bool pa_sink_input_may_move_to(pa_sink_input *i, pa_sink *dest) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_sink_assert_ref(dest);
if (dest == i->sink)
return true;
if (!pa_sink_input_may_move(i))
return false;
/* Make sure we're not creating a filter sink cycle */
if (find_filter_sink_input(i, dest)) {
pa_log_debug("Can't connect input to %s, as that would create a cycle.", dest->name);
return false;
}
if (pa_idxset_size(dest->inputs) >= PA_MAX_INPUTS_PER_SINK) {
pa_log_warn("Failed to move sink input: too many inputs per sink.");
return false;
}
if (check_passthrough_connection(pa_sink_input_is_passthrough(i), dest) < 0)
return false;
if (i->may_move_to)
if (!i->may_move_to(i, dest))
return false;
return true;
}
/* Called from main context */
int pa_sink_input_start_move(pa_sink_input *i) {
pa_source_output *o, *p = NULL;
struct volume_factor_entry *v;
void *state = NULL;
int r;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(i->sink);
if (!pa_sink_input_may_move(i))
return -PA_ERR_NOTSUPPORTED;
if ((r = pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_START], i)) < 0)
return r;
/* Kill directly connected outputs */
while ((o = pa_idxset_first(i->direct_outputs, NULL))) {
pa_assert(o != p);
pa_source_output_kill(o);
p = o;
}
pa_assert(pa_idxset_isempty(i->direct_outputs));
pa_idxset_remove_by_data(i->sink->inputs, i, NULL);
if (pa_sink_input_get_state(i) == PA_SINK_INPUT_CORKED)
pa_assert_se(i->sink->n_corked-- >= 1);
if (pa_sink_input_is_passthrough(i))
pa_sink_leave_passthrough(i->sink);
if (pa_sink_flat_volume_enabled(i->sink))
/* We might need to update the sink's volume if we are in flat
* volume mode. */
pa_sink_set_volume(i->sink, NULL, false, false);
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_START_MOVE, i, 0, NULL) == 0);
pa_sink_update_status(i->sink);
PA_HASHMAP_FOREACH(v, i->volume_factor_sink_items, state)
pa_cvolume_remap(&v->volume, &i->sink->channel_map, &i->channel_map);
pa_cvolume_remap(&i->volume_factor_sink, &i->sink->channel_map, &i->channel_map);
i->sink = NULL;
pa_sink_input_unref(i);
return 0;
}
/* Called from main context. If i has an origin sink that uses volume sharing,
* then also the origin sink 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_sink_input *i, pa_sink *dest) {
pa_cvolume new_volume;
pa_assert(i);
pa_assert(dest);
pa_assert(i->sink); /* The destination sink should already be set. */
if (i->origin_sink && (i->origin_sink->flags & PA_SINK_SHARE_VOLUME_WITH_MASTER)) {
pa_sink *root_sink = pa_sink_get_master(i->sink);
pa_sink_input *origin_sink_input;
uint32_t idx;
if (PA_UNLIKELY(!root_sink))
return;
if (pa_sink_flat_volume_enabled(i->sink)) {
/* Ok, so the origin sink uses volume sharing, and flat volume is
* enabled. The volume will have to be updated as follows:
*
* i->volume := i->sink->real_volume
* (handled later by pa_sink_set_volume)
* i->reference_ratio := i->volume / i->sink->reference_volume
* (handled later by pa_sink_set_volume)
* i->real_ratio stays unchanged
* (streams whose origin sink uses volume sharing should
* always have real_ratio of 0 dB)
* i->soft_volume stays unchanged
* (streams whose origin sink uses volume sharing should
* always have volume_factor as soft_volume, so no change
* should be needed) */
pa_assert(pa_cvolume_is_norm(&i->real_ratio));
pa_assert(pa_cvolume_equal(&i->soft_volume, &i->volume_factor));
/* Notifications will be sent by pa_sink_set_volume(). */
} else {
/* Ok, so the origin sink uses volume sharing, and flat volume is
* disabled. The volume will have to be updated as follows:
*
* i->volume := 0 dB
* i->reference_ratio := 0 dB
* i->real_ratio stays unchanged
* (streams whose origin sink uses volume sharing should
* always have real_ratio of 0 dB)
* i->soft_volume stays unchanged
* (streams whose origin sink uses volume sharing should
* always have volume_factor as soft_volume, so no change
* should be needed) */
pa_cvolume_reset(&new_volume, i->volume.channels);
pa_sink_input_set_volume_direct(i, &new_volume);
pa_cvolume_reset(&i->reference_ratio, i->reference_ratio.channels);
pa_assert(pa_cvolume_is_norm(&i->real_ratio));
pa_assert(pa_cvolume_equal(&i->soft_volume, &i->volume_factor));
}
/* Additionally, the origin sink volume needs updating:
*
* i->origin_sink->reference_volume := root_sink->reference_volume
* i->origin_sink->real_volume := root_sink->real_volume
* i->origin_sink->soft_volume stays unchanged
* (sinks that use volume sharing should always have
* soft_volume of 0 dB) */
new_volume = root_sink->reference_volume;
pa_cvolume_remap(&new_volume, &root_sink->channel_map, &i->origin_sink->channel_map);
pa_sink_set_reference_volume_direct(i->origin_sink, &new_volume);
i->origin_sink->real_volume = root_sink->real_volume;
pa_cvolume_remap(&i->origin_sink->real_volume, &root_sink->channel_map, &i->origin_sink->channel_map);
pa_assert(pa_cvolume_is_norm(&i->origin_sink->soft_volume));
/* If you wonder whether i->origin_sink->set_volume() should be called
* somewhere, that's not the case, because sinks 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_SINK_MESSAGE_FINISH_MOVE message handler. */
/* Recursively update origin sink inputs. */
PA_IDXSET_FOREACH(origin_sink_input, i->origin_sink->inputs, idx)
update_volume_due_to_moving(origin_sink_input, dest);
} else {
if (pa_sink_flat_volume_enabled(i->sink)) {
/* Ok, so this is a regular stream, and flat volume is enabled. The
* volume will have to be updated as follows:
*
* i->volume := i->reference_ratio * i->sink->reference_volume
* i->reference_ratio stays unchanged
* i->real_ratio := i->volume / i->sink->real_volume
* (handled later by pa_sink_set_volume)
* i->soft_volume := i->real_ratio * i->volume_factor
* (handled later by pa_sink_set_volume) */
new_volume = i->sink->reference_volume;
pa_cvolume_remap(&new_volume, &i->sink->channel_map, &i->channel_map);
pa_sw_cvolume_multiply(&new_volume, &new_volume, &i->reference_ratio);
pa_sink_input_set_volume_direct(i, &new_volume);
} else {
/* Ok, so this is a regular stream, and flat volume is disabled.
* The volume will have to be updated as follows:
*
* i->volume := i->reference_ratio
* i->reference_ratio stays unchanged
* i->real_ratio := i->reference_ratio
* i->soft_volume := i->real_ratio * i->volume_factor */
pa_sink_input_set_volume_direct(i, &i->reference_ratio);
i->real_ratio = i->reference_ratio;
pa_sw_cvolume_multiply(&i->soft_volume, &i->real_ratio, &i->volume_factor);
}
}
/* If i->sink == dest, then recursion has finished, and we can finally call
* pa_sink_set_volume(), which will do the rest of the updates. */
if ((i->sink == dest) && pa_sink_flat_volume_enabled(i->sink))
pa_sink_set_volume(i->sink, NULL, false, i->save_volume);
}
/* Called from main context */
int pa_sink_input_finish_move(pa_sink_input *i, pa_sink *dest, bool save) {
struct volume_factor_entry *v;
void *state = NULL;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(!i->sink);
pa_sink_assert_ref(dest);
if (!pa_sink_input_may_move_to(i, dest))
return -PA_ERR_NOTSUPPORTED;
if (pa_sink_input_is_passthrough(i) && !pa_sink_check_format(dest, i->format)) {
pa_proplist *p = pa_proplist_new();
pa_log_debug("New sink 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_sink_input_send_event(i, PA_STREAM_EVENT_FORMAT_LOST, p);
pa_proplist_free(p);
return -PA_ERR_NOTSUPPORTED;
}
if (!(i->flags & PA_SINK_INPUT_VARIABLE_RATE) &&
!pa_sample_spec_equal(&i->sample_spec, &dest->sample_spec)) {
/* try to change dest sink rate if possible without glitches.
module-suspend-on-idle resumes destination sink with
SINK_INPUT_MOVE_FINISH hook */
pa_log_info("Trying to change sample rate");
if (pa_sink_update_rate(dest, i->sample_spec.rate, pa_sink_input_is_passthrough(i)) >= 0)
pa_log_info("Rate changed to %u Hz", dest->sample_spec.rate);
}
if (i->moving)
i->moving(i, dest);
i->sink = dest;
i->save_sink = save;
pa_idxset_put(dest->inputs, pa_sink_input_ref(i), NULL);
PA_HASHMAP_FOREACH(v, i->volume_factor_sink_items, state)
pa_cvolume_remap(&v->volume, &i->channel_map, &i->sink->channel_map);
pa_cvolume_remap(&i->volume_factor_sink, &i->channel_map, &i->sink->channel_map);
if (pa_sink_input_get_state(i) == PA_SINK_INPUT_CORKED)
i->sink->n_corked++;
pa_sink_input_update_rate(i);
pa_sink_update_status(dest);
update_volume_due_to_moving(i, dest);
if (pa_sink_input_is_passthrough(i))
pa_sink_enter_passthrough(i->sink);
pa_assert_se(pa_asyncmsgq_send(i->sink->asyncmsgq, PA_MSGOBJECT(i->sink), PA_SINK_MESSAGE_FINISH_MOVE, i, 0, NULL) == 0);
pa_log_debug("Successfully moved sink input %i to %s.", i->index, dest->name);
/* Notify everyone */
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_FINISH], i);
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
return 0;
}
/* Called from main context */
void pa_sink_input_fail_move(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(!i->sink);
/* Check if someone wants this sink input? */
if (pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_FAIL], i) == PA_HOOK_STOP)
return;
if (i->moving)
i->moving(i, NULL);
pa_sink_input_kill(i);
}
/* Called from main context */
int pa_sink_input_move_to(pa_sink_input *i, pa_sink *dest, bool save) {
int r;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(PA_SINK_INPUT_IS_LINKED(i->state));
pa_assert(i->sink);
pa_sink_assert_ref(dest);
if (dest == i->sink)
return 0;
if (!pa_sink_input_may_move_to(i, dest))
return -PA_ERR_NOTSUPPORTED;
pa_sink_input_ref(i);
if ((r = pa_sink_input_start_move(i)) < 0) {
pa_sink_input_unref(i);
return r;
}
if ((r = pa_sink_input_finish_move(i, dest, save)) < 0) {
pa_sink_input_fail_move(i);
pa_sink_input_unref(i);
return r;
}
pa_sink_input_unref(i);
return 0;
}
/* Called from IO thread context */
void pa_sink_input_set_state_within_thread(pa_sink_input *i, pa_sink_input_state_t state) {
bool corking, uncorking;
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
if (state == i->thread_info.state)
return;
if ((state == PA_SINK_INPUT_DRAINED || state == PA_SINK_INPUT_RUNNING) &&
!(i->thread_info.state == PA_SINK_INPUT_DRAINED || i->thread_info.state != PA_SINK_INPUT_RUNNING))
pa_atomic_store(&i->thread_info.drained, 1);
corking = state == PA_SINK_INPUT_CORKED && i->thread_info.state == PA_SINK_INPUT_RUNNING;
uncorking = i->thread_info.state == PA_SINK_INPUT_CORKED && state == PA_SINK_INPUT_RUNNING;
if (i->state_change)
i->state_change(i, state);
if (corking) {
pa_log_debug("Requesting rewind due to corking");
/* This will tell the implementing sink input driver to rewind
* so that the unplayed already mixed data is not lost */
pa_sink_input_request_rewind(i, 0, true, true, false);
/* Set the corked state *after* requesting rewind */
i->thread_info.state = state;
} else if (uncorking) {
pa_log_debug("Requesting rewind due to uncorking");
i->thread_info.underrun_for = (uint64_t) -1;
i->thread_info.underrun_for_sink = 0;
i->thread_info.playing_for = 0;
/* Set the uncorked state *before* requesting rewind */
i->thread_info.state = state;
/* OK, we're being uncorked. Make sure we're not rewound when
* the hw buffer is remixed and request a remix. */
pa_sink_input_request_rewind(i, 0, false, true, true);
} else
/* We may not be corking or uncorking, but we still need to set the state. */
i->thread_info.state = state;
}
/* Called from thread context, except when it is not. */
int pa_sink_input_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) {
pa_sink_input *i = PA_SINK_INPUT(o);
pa_sink_input_assert_ref(i);
switch (code) {
case PA_SINK_INPUT_MESSAGE_SET_SOFT_VOLUME:
if (!pa_cvolume_equal(&i->thread_info.soft_volume, &i->soft_volume)) {
i->thread_info.soft_volume = i->soft_volume;
pa_sink_input_request_rewind(i, 0, true, false, false);
}
return 0;
case PA_SINK_INPUT_MESSAGE_SET_SOFT_MUTE:
if (i->thread_info.muted != i->muted) {
i->thread_info.muted = i->muted;
pa_sink_input_request_rewind(i, 0, true, false, false);
}
return 0;
case PA_SINK_INPUT_MESSAGE_GET_LATENCY: {
pa_usec_t *r = userdata;
r[0] += pa_bytes_to_usec(pa_memblockq_get_length(i->thread_info.render_memblockq), &i->sink->sample_spec);
r[1] += pa_sink_get_latency_within_thread(i->sink);
return 0;
}
case PA_SINK_INPUT_MESSAGE_SET_RATE:
i->thread_info.sample_spec.rate = PA_PTR_TO_UINT(userdata);
pa_resampler_set_input_rate(i->thread_info.resampler, PA_PTR_TO_UINT(userdata));
return 0;
case PA_SINK_INPUT_MESSAGE_SET_STATE: {
pa_sink_input *ssync;
pa_sink_input_set_state_within_thread(i, PA_PTR_TO_UINT(userdata));
for (ssync = i->thread_info.sync_prev; ssync; ssync = ssync->thread_info.sync_prev)
pa_sink_input_set_state_within_thread(ssync, PA_PTR_TO_UINT(userdata));
for (ssync = i->thread_info.sync_next; ssync; ssync = ssync->thread_info.sync_next)
pa_sink_input_set_state_within_thread(ssync, PA_PTR_TO_UINT(userdata));
return 0;
}
case PA_SINK_INPUT_MESSAGE_SET_REQUESTED_LATENCY: {
pa_usec_t *usec = userdata;
*usec = pa_sink_input_set_requested_latency_within_thread(i, *usec);
return 0;
}
case PA_SINK_INPUT_MESSAGE_GET_REQUESTED_LATENCY: {
pa_usec_t *r = userdata;
*r = i->thread_info.requested_sink_latency;
return 0;
}
}
return -PA_ERR_NOTIMPLEMENTED;
}
/* Called from main thread */
pa_sink_input_state_t pa_sink_input_get_state(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
if (i->state == PA_SINK_INPUT_RUNNING || i->state == PA_SINK_INPUT_DRAINED)
return pa_atomic_load(&i->thread_info.drained) ? PA_SINK_INPUT_DRAINED : PA_SINK_INPUT_RUNNING;
return i->state;
}
/* Called from IO context */
bool pa_sink_input_safe_to_remove(pa_sink_input *i) {
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
if (PA_SINK_INPUT_IS_LINKED(i->thread_info.state))
return pa_memblockq_is_empty(i->thread_info.render_memblockq);
return true;
}
/* Called from IO context */
void pa_sink_input_request_rewind(
pa_sink_input *i,
size_t nbytes /* in our sample spec */,
bool rewrite,
bool flush,
bool dont_rewind_render) {
size_t lbq;
/* If 'rewrite' is true the sink is rewound as far as requested
* and possible and the exact value of this is passed back the
* implementor via process_rewind(). If 'flush' is also true all
* already rendered data is also dropped.
*
* If 'rewrite' is false the sink is rewound as far as requested
* and possible and the already rendered data is dropped so that
* in the next iteration we read new data from the
* implementor. This implies 'flush' is true. If
* dont_rewind_render is true then the render memblockq is not
* rewound. */
/* nbytes = 0 means maximum rewind request */
pa_sink_input_assert_ref(i);
pa_sink_input_assert_io_context(i);
pa_assert(rewrite || flush);
pa_assert(!dont_rewind_render || !rewrite);
/* We don't take rewind requests while we are corked */
if (i->thread_info.state == PA_SINK_INPUT_CORKED)
return;
nbytes = PA_MAX(i->thread_info.rewrite_nbytes, nbytes);
#ifdef SINK_INPUT_DEBUG
pa_log_debug("request rewrite %zu", nbytes);
#endif
/* Calculate how much we can rewind locally without having to
* touch the sink */
if (rewrite)
lbq = pa_memblockq_get_length(i->thread_info.render_memblockq);
else
lbq = 0;
/* Check if rewinding for the maximum is requested, and if so, fix up */
if (nbytes <= 0) {
/* Calculate maximum number of bytes that could be rewound in theory */
nbytes = i->sink->thread_info.max_rewind + lbq;
/* Transform from sink domain */
if (i->thread_info.resampler)
nbytes = pa_resampler_request(i->thread_info.resampler, nbytes);
}
/* Remember how much we actually want to rewrite */
if (i->thread_info.rewrite_nbytes != (size_t) -1) {
if (rewrite) {
/* Make sure to not overwrite over underruns */
if (nbytes > i->thread_info.playing_for)
nbytes = (size_t) i->thread_info.playing_for;
i->thread_info.rewrite_nbytes = nbytes;
} else
i->thread_info.rewrite_nbytes = (size_t) -1;
}
i->thread_info.rewrite_flush =
i->thread_info.rewrite_flush || flush;
i->thread_info.dont_rewind_render =
i->thread_info.dont_rewind_render ||
dont_rewind_render;
/* nbytes is -1 if some earlier rewind request had rewrite == false. */
if (nbytes != (size_t) -1) {
/* Transform to sink domain */
if (i->thread_info.resampler)
nbytes = pa_resampler_result(i->thread_info.resampler, nbytes);
if (nbytes > lbq)
pa_sink_request_rewind(i->sink, nbytes - lbq);
else
/* This call will make sure process_rewind() is called later */
pa_sink_request_rewind(i->sink, 0);
}
}
/* Called from main context */
pa_memchunk* pa_sink_input_get_silence(pa_sink_input *i, pa_memchunk *ret) {
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(ret);
/* FIXME: Shouldn't access resampler object from main context! */
pa_silence_memchunk_get(
&i->core->silence_cache,
i->core->mempool,
ret,
&i->sample_spec,
i->thread_info.resampler ? pa_resampler_max_block_size(i->thread_info.resampler) : 0);
return ret;
}
/* Called from main context */
void pa_sink_input_send_event(pa_sink_input *i, const char *event, pa_proplist *data) {
pa_proplist *pl = NULL;
pa_sink_input_send_event_hook_data hook_data;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
pa_assert(event);
if (!i->send_event)
return;
if (!data)
data = pl = pa_proplist_new();
hook_data.sink_input = i;
hook_data.data = data;
hook_data.event = event;
if (pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_SEND_EVENT], &hook_data) < 0)
goto finish;
i->send_event(i, event, data);
finish:
if (pl)
pa_proplist_free(pl);
}
/* Called from main context */
/* Updates the sink input's resampler with whatever the current sink requires
* -- useful when the underlying sink's rate might have changed */
int pa_sink_input_update_rate(pa_sink_input *i) {
pa_resampler *new_resampler;
char *memblockq_name;
pa_sink_input_assert_ref(i);
pa_assert_ctl_context();
if (i->thread_info.resampler &&
pa_sample_spec_equal(pa_resampler_output_sample_spec(i->thread_info.resampler), &i->sink->sample_spec) &&
pa_channel_map_equal(pa_resampler_output_channel_map(i->thread_info.resampler), &i->sink->channel_map))
new_resampler = i->thread_info.resampler;
else if (!pa_sink_input_is_passthrough(i) &&
((i->flags & PA_SINK_INPUT_VARIABLE_RATE) ||
!pa_sample_spec_equal(&i->sample_spec, &i->sink->sample_spec) ||
!pa_channel_map_equal(&i->channel_map, &i->sink->channel_map))) {
new_resampler = pa_resampler_new(i->core->mempool,
&i->sample_spec, &i->channel_map,
&i->sink->sample_spec, &i->sink->channel_map,
i->requested_resample_method,
((i->flags & PA_SINK_INPUT_VARIABLE_RATE) ? PA_RESAMPLER_VARIABLE_RATE : 0) |
((i->flags & PA_SINK_INPUT_NO_REMAP) ? PA_RESAMPLER_NO_REMAP : 0) |
(i->core->disable_remixing || (i->flags & PA_SINK_INPUT_NO_REMIX) ? PA_RESAMPLER_NO_REMIX : 0) |
(i->core->disable_lfe_remixing ? PA_RESAMPLER_NO_LFE : 0));
if (!new_resampler) {
pa_log_warn("Unsupported resampling operation.");
return -PA_ERR_NOTSUPPORTED;
}
} else
new_resampler = NULL;
if (new_resampler == i->thread_info.resampler)
return 0;
if (i->thread_info.resampler)
pa_resampler_free(i->thread_info.resampler);
i->thread_info.resampler = new_resampler;
pa_memblockq_free(i->thread_info.render_memblockq);
memblockq_name = pa_sprintf_malloc("sink input render_memblockq [%u]", i->index);
i->thread_info.render_memblockq = pa_memblockq_new(
memblockq_name,
0,
MEMBLOCKQ_MAXLENGTH,
0,
&i->sink->sample_spec,
0,
1,
0,
&i->sink->silence);
pa_xfree(memblockq_name);
i->actual_resample_method = new_resampler ? pa_resampler_get_method(new_resampler) : PA_RESAMPLER_INVALID;
pa_log_debug("Updated resampler for sink input %d", i->index);
return 0;
}
/* Called from the main thread. */
void pa_sink_input_set_volume_direct(pa_sink_input *i, 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(i);
pa_assert(volume);
old_volume = i->volume;
if (pa_cvolume_equal(volume, &old_volume))
return;
i->volume = *volume;
pa_log_debug("The volume of sink input %u changed from %s to %s.", i->index,
pa_cvolume_snprint_verbose(old_volume_str, sizeof(old_volume_str), &old_volume, &i->channel_map, true),
pa_cvolume_snprint_verbose(new_volume_str, sizeof(new_volume_str), volume, &i->channel_map, true));
if (i->volume_changed)
i->volume_changed(i);
pa_subscription_post(i->core, PA_SUBSCRIPTION_EVENT_SINK_INPUT|PA_SUBSCRIPTION_EVENT_CHANGE, i->index);
pa_hook_fire(&i->core->hooks[PA_CORE_HOOK_SINK_INPUT_VOLUME_CHANGED], i);
}
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