mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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0ac2cfce6d
This is the beginning of work to support compressed formats natively in PulseAudio. This adds a pa_stream_new_extended() that takes a format structure, sends it to the server (=> protocol extension) and has the server negotiate with the appropropriate sink to figure out what format it should use. This is work in progress, and works only with PCM streams. Actual compressed format support in some sink needs to be implemented, and extensive testing is required. More details on how this is supposed to work is available at: http://pulseaudio.org/wiki/PassthroughSupport
471 lines
14 KiB
C
471 lines
14 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2009 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <pulse/xmalloc.h>
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#include <pulse/volume.h>
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#include <pulse/timeval.h>
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#include <pulse/util.h>
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#include <pulsecore/core-error.h>
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#include <pulsecore/module.h>
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#include <pulsecore/core-util.h>
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#include <pulsecore/modargs.h>
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#include <pulsecore/log.h>
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#include <pulsecore/core-subscribe.h>
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#include <pulsecore/sink-input.h>
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#include <pulsecore/source-output.h>
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#include <pulsecore/namereg.h>
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#include "module-intended-roles-symdef.h"
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PA_MODULE_AUTHOR("Lennart Poettering");
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PA_MODULE_DESCRIPTION("Automatically set device of streams based of intended roles of devices");
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PA_MODULE_VERSION(PACKAGE_VERSION);
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PA_MODULE_LOAD_ONCE(TRUE);
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PA_MODULE_USAGE(
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"on_hotplug=<When new device becomes available, recheck streams?> "
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"on_rescue=<When device becomes unavailable, recheck streams?>");
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static const char* const valid_modargs[] = {
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"on_hotplug",
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"on_rescue",
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NULL
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};
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struct userdata {
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pa_core *core;
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pa_module *module;
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pa_hook_slot
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*sink_input_new_hook_slot,
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*source_output_new_hook_slot,
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*sink_put_hook_slot,
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*source_put_hook_slot,
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*sink_unlink_hook_slot,
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*source_unlink_hook_slot;
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pa_bool_t on_hotplug:1;
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pa_bool_t on_rescue:1;
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};
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static pa_bool_t role_match(pa_proplist *proplist, const char *role) {
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const char *ir;
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char *r;
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const char *state = NULL;
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if (!(ir = pa_proplist_gets(proplist, PA_PROP_DEVICE_INTENDED_ROLES)))
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return FALSE;
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while ((r = pa_split_spaces(ir, &state))) {
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if (pa_streq(role, r)) {
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pa_xfree(r);
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return TRUE;
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}
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pa_xfree(r);
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}
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return FALSE;
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}
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static pa_hook_result_t sink_input_new_hook_callback(pa_core *c, pa_sink_input_new_data *new_data, struct userdata *u) {
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const char *role;
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pa_sink *s, *def;
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uint32_t idx;
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pa_assert(c);
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pa_assert(new_data);
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pa_assert(u);
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if (!new_data->proplist) {
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pa_log_debug("New stream lacks property data.");
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return PA_HOOK_OK;
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}
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if (new_data->sink) {
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pa_log_debug("Not setting device for stream %s, because already set.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
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return PA_HOOK_OK;
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}
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if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE))) {
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pa_log_debug("Not setting device for stream %s, because it lacks role.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
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return PA_HOOK_OK;
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}
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/* Prefer the default sink over any other sink, just in case... */
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if ((def = pa_namereg_get_default_sink(c)))
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if (role_match(def->proplist, role) && pa_sink_input_new_data_set_sink(new_data, def, FALSE))
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return PA_HOOK_OK;
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/* @todo: favour the highest priority device, not the first one we find? */
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PA_IDXSET_FOREACH(s, c->sinks, idx) {
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if (s == def)
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continue;
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if (!PA_SINK_IS_LINKED(pa_sink_get_state(s)))
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continue;
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if (role_match(s->proplist, role) && pa_sink_input_new_data_set_sink(new_data, s, FALSE))
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return PA_HOOK_OK;
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}
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return PA_HOOK_OK;
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}
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static pa_hook_result_t source_output_new_hook_callback(pa_core *c, pa_source_output_new_data *new_data, struct userdata *u) {
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const char *role;
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pa_source *s, *def;
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uint32_t idx;
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pa_assert(c);
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pa_assert(new_data);
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pa_assert(u);
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if (!new_data->proplist) {
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pa_log_debug("New stream lacks property data.");
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return PA_HOOK_OK;
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}
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if (new_data->source) {
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pa_log_debug("Not setting device for stream %s, because already set.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
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return PA_HOOK_OK;
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}
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if (!(role = pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_ROLE))) {
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pa_log_debug("Not setting device for stream %s, because it lacks role.", pa_strnull(pa_proplist_gets(new_data->proplist, PA_PROP_MEDIA_NAME)));
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return PA_HOOK_OK;
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}
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/* Prefer the default source over any other source, just in case... */
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if ((def = pa_namereg_get_default_source(c)))
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if (role_match(def->proplist, role)) {
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new_data->source = def;
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new_data->save_source = FALSE;
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return PA_HOOK_OK;
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}
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PA_IDXSET_FOREACH(s, c->sources, idx) {
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if (s->monitor_of)
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continue;
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if (s == def)
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continue;
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if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)))
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continue;
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/* @todo: favour the highest priority device, not the first one we find? */
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if (role_match(s->proplist, role)) {
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new_data->source = s;
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new_data->save_source = FALSE;
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return PA_HOOK_OK;
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}
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}
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return PA_HOOK_OK;
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}
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static pa_hook_result_t sink_put_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) {
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pa_sink_input *si;
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uint32_t idx;
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pa_assert(c);
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pa_assert(sink);
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pa_assert(u);
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pa_assert(u->on_hotplug);
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PA_IDXSET_FOREACH(si, c->sink_inputs, idx) {
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const char *role;
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if (si->sink == sink)
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continue;
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if (si->save_sink)
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continue;
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/* Skip this if it is already in the process of being moved
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* anyway */
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if (!si->sink)
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continue;
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/* It might happen that a stream and a sink are set up at the
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same time, in which case we want to make sure we don't
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interfere with that */
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if (!PA_SINK_INPUT_IS_LINKED(pa_sink_input_get_state(si)))
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continue;
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if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE)))
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continue;
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if (role_match(si->sink->proplist, role))
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continue;
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if (!role_match(sink->proplist, role))
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continue;
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pa_sink_input_move_to(si, sink, FALSE);
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}
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return PA_HOOK_OK;
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}
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static pa_hook_result_t source_put_hook_callback(pa_core *c, pa_source *source, struct userdata *u) {
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pa_source_output *so;
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uint32_t idx;
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pa_assert(c);
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pa_assert(source);
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pa_assert(u);
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pa_assert(u->on_hotplug);
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if (source->monitor_of)
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return PA_HOOK_OK;
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PA_IDXSET_FOREACH(so, c->source_outputs, idx) {
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const char *role;
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if (so->source == source)
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continue;
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if (so->save_source)
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continue;
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if (so->direct_on_input)
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continue;
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/* Skip this if it is already in the process of being moved
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* anyway */
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if (!so->source)
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continue;
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/* It might happen that a stream and a source are set up at the
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same time, in which case we want to make sure we don't
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interfere with that */
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if (!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(so)))
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continue;
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if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE)))
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continue;
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if (role_match(so->source->proplist, role))
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continue;
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if (!role_match(source->proplist, role))
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continue;
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pa_source_output_move_to(so, source, FALSE);
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}
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return PA_HOOK_OK;
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}
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static pa_hook_result_t sink_unlink_hook_callback(pa_core *c, pa_sink *sink, struct userdata *u) {
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pa_sink_input *si;
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uint32_t idx;
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pa_sink *def;
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pa_assert(c);
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pa_assert(sink);
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pa_assert(u);
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pa_assert(u->on_rescue);
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/* There's no point in doing anything if the core is shut down anyway */
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if (c->state == PA_CORE_SHUTDOWN)
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return PA_HOOK_OK;
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/* If there not default sink, then there is no sink at all */
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if (!(def = pa_namereg_get_default_sink(c)))
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return PA_HOOK_OK;
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PA_IDXSET_FOREACH(si, sink->inputs, idx) {
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const char *role;
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uint32_t jdx;
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pa_sink *d;
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if (!si->sink)
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continue;
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if (!(role = pa_proplist_gets(si->proplist, PA_PROP_MEDIA_ROLE)))
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continue;
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/* Would the default sink fit? If so, let's use it */
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if (def != sink && role_match(def->proplist, role))
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if (pa_sink_input_move_to(si, def, FALSE) >= 0)
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continue;
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/* Try to find some other fitting sink */
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/* @todo: favour the highest priority device, not the first one we find? */
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PA_IDXSET_FOREACH(d, c->sinks, jdx) {
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if (d == def || d == sink)
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continue;
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if (!PA_SINK_IS_LINKED(pa_sink_get_state(d)))
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continue;
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if (role_match(d->proplist, role))
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if (pa_sink_input_move_to(si, d, FALSE) >= 0)
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break;
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}
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}
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return PA_HOOK_OK;
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}
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static pa_hook_result_t source_unlink_hook_callback(pa_core *c, pa_source *source, struct userdata *u) {
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pa_source_output *so;
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uint32_t idx;
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pa_source *def;
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pa_assert(c);
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pa_assert(source);
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pa_assert(u);
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pa_assert(u->on_rescue);
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/* There's no point in doing anything if the core is shut down anyway */
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if (c->state == PA_CORE_SHUTDOWN)
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return PA_HOOK_OK;
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/* If there not default source, then there is no source at all */
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if (!(def = pa_namereg_get_default_source(c)))
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return PA_HOOK_OK;
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PA_IDXSET_FOREACH(so, source->outputs, idx) {
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const char *role;
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uint32_t jdx;
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pa_source *d;
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if (so->direct_on_input)
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continue;
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if (!so->source)
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continue;
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if (!(role = pa_proplist_gets(so->proplist, PA_PROP_MEDIA_ROLE)))
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continue;
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/* Would the default source fit? If so, let's use it */
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if (def != source && role_match(def->proplist, role) && !source->monitor_of == !def->monitor_of) {
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pa_source_output_move_to(so, def, FALSE);
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continue;
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}
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/* Try to find some other fitting source */
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/* @todo: favour the highest priority device, not the first one we find? */
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PA_IDXSET_FOREACH(d, c->sources, jdx) {
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if (d == def || d == source)
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continue;
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if (!PA_SOURCE_IS_LINKED(pa_source_get_state(d)))
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continue;
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/* If moving from a monitor, move to another monitor */
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if (!source->monitor_of == !d->monitor_of && role_match(d->proplist, role)) {
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pa_source_output_move_to(so, d, FALSE);
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break;
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}
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}
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}
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return PA_HOOK_OK;
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}
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int pa__init(pa_module*m) {
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pa_modargs *ma = NULL;
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struct userdata *u;
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pa_bool_t on_hotplug = TRUE, on_rescue = TRUE;
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pa_assert(m);
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if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
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pa_log("Failed to parse module arguments");
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goto fail;
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}
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if (pa_modargs_get_value_boolean(ma, "on_hotplug", &on_hotplug) < 0 ||
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pa_modargs_get_value_boolean(ma, "on_rescue", &on_rescue) < 0) {
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pa_log("on_hotplug= and on_rescue= expect boolean arguments");
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goto fail;
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}
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m->userdata = u = pa_xnew0(struct userdata, 1);
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u->core = m->core;
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u->module = m;
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u->on_hotplug = on_hotplug;
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u->on_rescue = on_rescue;
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/* A little bit later than module-stream-restore */
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u->sink_input_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_INPUT_NEW], PA_HOOK_EARLY+10, (pa_hook_cb_t) sink_input_new_hook_callback, u);
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u->source_output_new_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_OUTPUT_NEW], PA_HOOK_EARLY+10, (pa_hook_cb_t) source_output_new_hook_callback, u);
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if (on_hotplug) {
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/* A little bit later than module-stream-restore */
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u->sink_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_PUT], PA_HOOK_LATE+10, (pa_hook_cb_t) sink_put_hook_callback, u);
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u->source_put_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_PUT], PA_HOOK_LATE+10, (pa_hook_cb_t) source_put_hook_callback, u);
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}
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if (on_rescue) {
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/* A little bit later than module-stream-restore, a little bit earlier than module-rescue-streams, ... */
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u->sink_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SINK_UNLINK], PA_HOOK_LATE+10, (pa_hook_cb_t) sink_unlink_hook_callback, u);
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u->source_unlink_hook_slot = pa_hook_connect(&m->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], PA_HOOK_LATE+10, (pa_hook_cb_t) source_unlink_hook_callback, u);
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}
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pa_modargs_free(ma);
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return 0;
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fail:
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pa__done(m);
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if (ma)
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pa_modargs_free(ma);
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return -1;
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}
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void pa__done(pa_module*m) {
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struct userdata* u;
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pa_assert(m);
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if (!(u = m->userdata))
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return;
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if (u->sink_input_new_hook_slot)
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pa_hook_slot_free(u->sink_input_new_hook_slot);
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if (u->source_output_new_hook_slot)
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pa_hook_slot_free(u->source_output_new_hook_slot);
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if (u->sink_put_hook_slot)
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pa_hook_slot_free(u->sink_put_hook_slot);
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if (u->source_put_hook_slot)
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pa_hook_slot_free(u->source_put_hook_slot);
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if (u->sink_unlink_hook_slot)
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pa_hook_slot_free(u->sink_unlink_hook_slot);
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if (u->source_unlink_hook_slot)
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pa_hook_slot_free(u->source_unlink_hook_slot);
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pa_xfree(u);
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}
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