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/***
This file is part of PulseAudio.
Copyright 2011 Colin Guthrie
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 <pulse/xmalloc.h>
#include <pulsecore/macro.h>
#include <pulsecore/hook-list.h>
#include <pulsecore/core.h>
#include <pulsecore/core-util.h>
#include <pulsecore/sink-input.h>
#include <pulsecore/modargs.h>
#include "module-filter-heuristics-symdef.h"
#define PA_PROP_FILTER_APPLY_MOVING "filter.apply.moving"
#define PA_PROP_FILTER_HEURISTICS "filter.heuristics"
PA_MODULE_AUTHOR("Colin Guthrie");
PA_MODULE_DESCRIPTION("Detect when various filters are desirable");
PA_MODULE_VERSION(PACKAGE_VERSION);
PA_MODULE_LOAD_ONCE(TRUE);
static const char* const valid_modargs[] = {
NULL
};
struct userdata {
pa_core *core;
pa_hook_slot
*sink_input_put_slot,
*sink_input_move_finish_slot,
*source_output_put_slot,
*source_output_move_finish_slot;
};
static pa_hook_result_t process(struct userdata *u, pa_object *o, pa_bool_t is_sink_input) {
const char *want;
pa_proplist *pl, *parent_pl;
if (is_sink_input) {
pl = PA_SINK_INPUT(o)->proplist;
parent_pl = PA_SINK_INPUT(o)->sink->proplist;
} else {
pl = PA_SOURCE_OUTPUT(o)->proplist;
parent_pl = PA_SOURCE_OUTPUT(o)->source->proplist;
}
/* If the stream already specifies what it must have, then let it be. */
if (!pa_proplist_gets(pl, PA_PROP_FILTER_HEURISTICS) && pa_proplist_gets(pl, PA_PROP_FILTER_APPLY))
return PA_HOOK_OK;
/* On phone sinks, make sure we're not applying echo cancellation */
if (pa_str_in_list_spaces(pa_proplist_gets(parent_pl, PA_PROP_DEVICE_INTENDED_ROLES), "phone")) {
const char *apply = pa_proplist_gets(pl, PA_PROP_FILTER_APPLY);
if (apply && pa_streq(apply, "echo-cancel")) {
pa_proplist_unset(pl, PA_PROP_FILTER_APPLY);
pa_proplist_unset(pl, PA_PROP_FILTER_HEURISTICS);
}
return PA_HOOK_OK;
}
want = pa_proplist_gets(pl, PA_PROP_FILTER_WANT);
if (want) {
/* There's a filter that we want, ask module-filter-apply to apply it, and remember that we're managing filter.apply */
pa_proplist_sets(pl, PA_PROP_FILTER_APPLY, want);
pa_proplist_sets(pl, PA_PROP_FILTER_HEURISTICS, "1");
}
return PA_HOOK_OK;
}
static pa_hook_result_t sink_input_put_cb(pa_core *core, pa_sink_input *i, struct userdata *u) {
pa_core_assert_ref(core);
pa_sink_input_assert_ref(i);
pa_assert(u);
return process(u, PA_OBJECT(i), TRUE);
}
static pa_hook_result_t sink_input_move_finish_cb(pa_core *core, pa_sink_input *i, struct userdata *u) {
pa_core_assert_ref(core);
pa_sink_input_assert_ref(i);
pa_assert(u);
/* module-filter-apply triggered this move, ignore */
if (pa_proplist_gets(i->proplist, PA_PROP_FILTER_APPLY_MOVING))
return PA_HOOK_OK;
return process(u, PA_OBJECT(i), TRUE);
}
static pa_hook_result_t source_output_put_cb(pa_core *core, pa_source_output *i, struct userdata *u) {
pa_core_assert_ref(core);
pa_source_output_assert_ref(i);
pa_assert(u);
return process(u, PA_OBJECT(i), FALSE);
}
static pa_hook_result_t source_output_move_finish_cb(pa_core *core, pa_source_output *i, struct userdata *u) {
pa_core_assert_ref(core);
pa_source_output_assert_ref(i);
pa_assert(u);
/* module-filter-apply triggered this move, ignore */
if (pa_proplist_gets(i->proplist, PA_PROP_FILTER_APPLY_MOVING))
return PA_HOOK_OK;
return process(u, PA_OBJECT(i), FALSE);
}
int pa__init(pa_module *m) {
pa_modargs *ma = NULL;
struct userdata *u;
pa_assert(m);
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log("Failed to parse module arguments");
goto fail;
}
m->userdata = u = pa_xnew(struct userdata, 1);
u->core = m->core;
u->sink_input_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_PUT], PA_HOOK_LATE-1, (pa_hook_cb_t) sink_input_put_cb, u);
u->sink_input_move_finish_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_MOVE_FINISH], PA_HOOK_LATE-1, (pa_hook_cb_t) sink_input_move_finish_cb, u);
u->source_output_put_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_PUT], PA_HOOK_LATE-1, (pa_hook_cb_t) source_output_put_cb, u);
u->source_output_move_finish_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_MOVE_FINISH], PA_HOOK_LATE-1, (pa_hook_cb_t) source_output_move_finish_cb, u);
pa_modargs_free(ma);
return 0;
fail:
pa__done(m);
if (ma)
pa_modargs_free(ma);
return -1;
}
void pa__done(pa_module *m) {
struct userdata* u;
pa_assert(m);
if (!(u = m->userdata))
return;
if (u->sink_input_put_slot)
pa_hook_slot_free(u->sink_input_put_slot);
if (u->sink_input_move_finish_slot)
pa_hook_slot_free(u->sink_input_move_finish_slot);
if (u->source_output_put_slot)
pa_hook_slot_free(u->source_output_put_slot);
if (u->source_output_move_finish_slot)
pa_hook_slot_free(u->source_output_move_finish_slot);
pa_xfree(u);
}
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