diff options
Diffstat (limited to 'src/pulsecore/source.c')
| -rw-r--r-- | src/pulsecore/source.c | 594 |
1 files changed, 594 insertions, 0 deletions
diff --git a/src/pulsecore/source.c b/src/pulsecore/source.c new file mode 100644 index 00000000..d707ad86 --- /dev/null +++ b/src/pulsecore/source.c @@ -0,0 +1,594 @@ +/* $Id$ */ + +/*** + 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 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 <string.h> + +#include <pulse/utf8.h> +#include <pulse/xmalloc.h> + +#include <pulsecore/source-output.h> +#include <pulsecore/namereg.h> +#include <pulsecore/core-subscribe.h> +#include <pulsecore/log.h> +#include <pulsecore/sample-util.h> + +#include "source.h" + +static PA_DEFINE_CHECK_TYPE(pa_source, pa_msgobject); + +static void source_free(pa_object *o); + +pa_source* pa_source_new( + pa_core *core, + const char *driver, + const char *name, + int fail, + const pa_sample_spec *spec, + const pa_channel_map *map) { + + pa_source *s; + char st[256]; + pa_channel_map tmap; + + pa_assert(core); + pa_assert(name); + pa_assert(spec); + + pa_return_null_if_fail(pa_sample_spec_valid(spec)); + + if (!map) + pa_return_null_if_fail(map = pa_channel_map_init_auto(&tmap, spec->channels, PA_CHANNEL_MAP_DEFAULT)); + + pa_return_null_if_fail(map && pa_channel_map_valid(map)); + pa_return_null_if_fail(map->channels == spec->channels); + pa_return_null_if_fail(!driver || pa_utf8_valid(driver)); + pa_return_null_if_fail(pa_utf8_valid(name) && *name); + + s = pa_msgobject_new(pa_source); + + if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SOURCE, s, fail))) { + pa_xfree(s); + return NULL; + } + + s->parent.parent.free = source_free; + s->parent.process_msg = pa_source_process_msg; + + s->core = core; + s->state = PA_SOURCE_INIT; + s->flags = 0; + s->name = pa_xstrdup(name); + s->description = NULL; + s->driver = pa_xstrdup(driver); + s->module = NULL; + + s->sample_spec = *spec; + s->channel_map = *map; + + s->outputs = pa_idxset_new(NULL, NULL); + s->n_corked = 0; + s->monitor_of = NULL; + + pa_cvolume_reset(&s->volume, spec->channels); + s->muted = FALSE; + s->refresh_volume = s->refresh_muted = FALSE; + + s->get_latency = NULL; + s->set_volume = NULL; + s->get_volume = NULL; + s->set_mute = NULL; + s->get_mute = NULL; + s->set_state = NULL; + s->userdata = NULL; + + s->asyncmsgq = NULL; + s->rtpoll = NULL; + + pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0); + + pa_sample_spec_snprint(st, sizeof(st), spec); + pa_log_info("Created source %u \"%s\" with sample spec \"%s\"", s->index, s->name, st); + + s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func); + s->thread_info.soft_volume = s->volume; + s->thread_info.soft_muted = s->muted; + s->thread_info.state = s->state; + + return s; +} + +static int source_set_state(pa_source *s, pa_source_state_t state) { + int ret; + pa_bool_t suspend_change; + + pa_assert(s); + + if (s->state == state) + return 0; + + suspend_change = + (s->state == PA_SOURCE_SUSPENDED && PA_SOURCE_OPENED(state)) || + (PA_SOURCE_OPENED(s->state) && state == PA_SOURCE_SUSPENDED); + + if (s->set_state) + if ((ret = s->set_state(s, state)) < 0) + return -1; + + if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0) + return -1; + + s->state = state; + + if (suspend_change) { + pa_source_output *o; + uint32_t idx; + + /* We're suspending or resuming, tell everyone about it */ + + for (o = PA_SOURCE_OUTPUT(pa_idxset_first(s->outputs, &idx)); o; o = PA_SOURCE_OUTPUT(pa_idxset_next(s->outputs, &idx))) + if (o->suspend) + o->suspend(o, state == PA_SINK_SUSPENDED); + } + + if (state != PA_SOURCE_UNLINKED) /* if we enter UNLINKED state pa_source_unlink() will fire the apropriate events */ + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_STATE_CHANGED], s); + + return 0; +} + +void pa_source_put(pa_source *s) { + pa_source_assert_ref(s); + + pa_assert(s->state == PA_SINK_INIT); + pa_assert(s->rtpoll); + pa_assert(s->asyncmsgq); + + pa_assert_se(source_set_state(s, PA_SOURCE_IDLE) == 0); + + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index); + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_NEW_POST], s); +} + +void pa_source_unlink(pa_source *s) { + pa_bool_t linked; + pa_source_output *o, *j = NULL; + + pa_assert(s); + + /* See pa_sink_unlink() for a couple of comments how this function + * works. */ + + linked = PA_SOURCE_LINKED(s->state); + + if (linked) + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK], s); + + if (s->state != PA_SOURCE_UNLINKED) + pa_namereg_unregister(s->core, s->name); + pa_idxset_remove_by_data(s->core->sources, s, NULL); + + while ((o = pa_idxset_first(s->outputs, NULL))) { + pa_assert(o != j); + pa_source_output_kill(o); + j = o; + } + + if (linked) + source_set_state(s, PA_SOURCE_UNLINKED); + else + s->state = PA_SOURCE_UNLINKED; + + s->get_latency = NULL; + s->get_volume = NULL; + s->set_volume = NULL; + s->set_mute = NULL; + s->get_mute = NULL; + s->set_state = NULL; + + if (linked) { + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index); + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_UNLINK_POST], s); + } +} + +static void source_free(pa_object *o) { + pa_source_output *so; + pa_source *s = PA_SOURCE(o); + + pa_assert(s); + pa_assert(pa_source_refcnt(s) == 0); + + if (PA_SOURCE_LINKED(s->state)) + pa_source_unlink(s); + + pa_log_info("Freeing source %u \"%s\"", s->index, s->name); + + pa_idxset_free(s->outputs, NULL, NULL); + + while ((so = pa_hashmap_steal_first(s->thread_info.outputs))) + pa_source_output_unref(so); + + pa_hashmap_free(s->thread_info.outputs, NULL, NULL); + + pa_xfree(s->name); + pa_xfree(s->description); + pa_xfree(s->driver); + pa_xfree(s); +} + +int pa_source_update_status(pa_source*s) { + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + if (s->state == PA_SOURCE_SUSPENDED) + return 0; + + return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE); +} + +int pa_source_suspend(pa_source *s, pa_bool_t suspend) { + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + if (suspend) + return source_set_state(s, PA_SOURCE_SUSPENDED); + else + return source_set_state(s, pa_source_used_by(s) ? PA_SOURCE_RUNNING : PA_SOURCE_IDLE); +} + +void pa_source_ping(pa_source *s) { + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_PING, NULL, 0, NULL, NULL); +} + +void pa_source_post(pa_source*s, const pa_memchunk *chunk) { + pa_source_output *o; + void *state = NULL; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_OPENED(s->thread_info.state)); + pa_assert(chunk); + + if (s->thread_info.state != PA_SOURCE_RUNNING) + return; + + if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&s->thread_info.soft_volume)) { + pa_memchunk vchunk = *chunk; + + pa_memblock_ref(vchunk.memblock); + pa_memchunk_make_writable(&vchunk, 0); + + if (s->thread_info.soft_muted || pa_cvolume_is_muted(&s->thread_info.soft_volume)) + pa_silence_memchunk(&vchunk, &s->sample_spec); + else + pa_volume_memchunk(&vchunk, &s->sample_spec, &s->thread_info.soft_volume); + + while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) + pa_source_output_push(o, &vchunk); + + pa_memblock_unref(vchunk.memblock); + } else { + + while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) + pa_source_output_push(o, chunk); + } +} + +pa_usec_t pa_source_get_latency(pa_source *s) { + pa_usec_t usec; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + if (!PA_SOURCE_OPENED(s->state)) + return 0; + + if (s->get_latency) + return s->get_latency(s); + + if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0) + return 0; + + return usec; +} + +void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) { + int changed; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + pa_assert(volume); + + changed = !pa_cvolume_equal(volume, &s->volume); + s->volume = *volume; + + if (s->set_volume && s->set_volume(s) < 0) + s->set_volume = NULL; + + if (!s->set_volume) + pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree); + + if (changed) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); +} + +const pa_cvolume *pa_source_get_volume(pa_source *s) { + pa_cvolume old_volume; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + old_volume = s->volume; + + if (s->get_volume && s->get_volume(s) < 0) + s->get_volume = NULL; + + if (!s->get_volume && s->refresh_volume) + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_VOLUME, &s->volume, 0, NULL); + + if (!pa_cvolume_equal(&old_volume, &s->volume)) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + + return &s->volume; +} + +void pa_source_set_mute(pa_source *s, pa_bool_t mute) { + int changed; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + changed = s->muted != mute; + s->muted = mute; + + if (s->set_mute && s->set_mute(s) < 0) + s->set_mute = NULL; + + if (!s->set_mute) + pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL); + + if (changed) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); +} + +pa_bool_t pa_source_get_mute(pa_source *s) { + pa_bool_t old_muted; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + old_muted = s->muted; + + if (s->get_mute && s->get_mute(s) < 0) + s->get_mute = NULL; + + if (!s->get_mute && s->refresh_muted) + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MUTE, &s->muted, 0, NULL); + + if (old_muted != s->muted) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + + return s->muted; +} + +void pa_source_set_module(pa_source *s, pa_module *m) { + pa_source_assert_ref(s); + + if (m == s->module) + return; + + s->module = m; + + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); +} + +void pa_source_set_description(pa_source *s, const char *description) { + pa_source_assert_ref(s); + + if (!description && !s->description) + return; + + if (description && s->description && !strcmp(description, s->description)) + return; + + pa_xfree(s->description); + s->description = pa_xstrdup(description); + + if (PA_SOURCE_LINKED(s->state)) { + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_DESCRIPTION_CHANGED], s); + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + } +} + +void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) { + pa_source_assert_ref(s); + pa_assert(q); + + s->asyncmsgq = q; +} + +void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) { + pa_source_assert_ref(s); + pa_assert(p); + + s->rtpoll = p; +} + +unsigned pa_source_linked_by(pa_source *s) { + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + return pa_idxset_size(s->outputs); +} + +unsigned pa_source_used_by(pa_source *s) { + unsigned ret; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + ret = pa_idxset_size(s->outputs); + pa_assert(ret >= s->n_corked); + + return ret - s->n_corked; +} + +int pa_source_process_msg(pa_msgobject *object, int code, void *userdata, int64_t offset, pa_memchunk *chunk) { + pa_source *s = PA_SOURCE(object); + pa_source_assert_ref(s); + pa_assert(s->thread_info.state != PA_SOURCE_UNLINKED); + + switch ((pa_source_message_t) code) { + case PA_SOURCE_MESSAGE_ADD_OUTPUT: { + pa_source_output *o = PA_SOURCE_OUTPUT(userdata); + pa_hashmap_put(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index), pa_source_output_ref(o)); + + pa_assert(!o->thread_info.attached); + o->thread_info.attached = TRUE; + + if (o->attach) + o->attach(o); + + return 0; + } + + case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: { + pa_source_output *o = PA_SOURCE_OUTPUT(userdata); + + if (o->detach) + o->detach(o); + + pa_assert(o->thread_info.attached); + o->thread_info.attached = FALSE; + + if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index))) + pa_source_output_unref(o); + + return 0; + } + + case PA_SOURCE_MESSAGE_SET_VOLUME: + s->thread_info.soft_volume = *((pa_cvolume*) userdata); + return 0; + + case PA_SOURCE_MESSAGE_SET_MUTE: + s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata); + return 0; + + case PA_SOURCE_MESSAGE_GET_VOLUME: + *((pa_cvolume*) userdata) = s->thread_info.soft_volume; + return 0; + + case PA_SOURCE_MESSAGE_GET_MUTE: + *((pa_bool_t*) userdata) = s->thread_info.soft_muted; + return 0; + + case PA_SOURCE_MESSAGE_PING: + return 0; + + case PA_SOURCE_MESSAGE_SET_STATE: + s->thread_info.state = PA_PTR_TO_UINT(userdata); + return 0; + + case PA_SOURCE_MESSAGE_DETACH: + + /* We're detaching all our output streams so that the + * asyncmsgq and rtpoll fields can be changed without + * problems */ + pa_source_detach_within_thread(s); + break; + + case PA_SOURCE_MESSAGE_ATTACH: + + /* Reattach all streams */ + pa_source_attach_within_thread(s); + break; + + case PA_SOURCE_MESSAGE_GET_LATENCY: + case PA_SOURCE_MESSAGE_MAX: + ; + } + + return -1; +} + +int pa_source_suspend_all(pa_core *c, pa_bool_t suspend) { + uint32_t idx; + pa_source *source; + int ret = 0; + + pa_core_assert_ref(c); + + for (source = PA_SOURCE(pa_idxset_first(c->sources, &idx)); source; source = PA_SOURCE(pa_idxset_next(c->sources, &idx))) + ret -= pa_source_suspend(source, suspend) < 0; + + return ret; +} + +void pa_source_detach(pa_source *s) { + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL); +} + +void pa_source_attach(pa_source *s) { + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->state)); + + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL); +} + +void pa_source_detach_within_thread(pa_source *s) { + pa_source_output *o; + void *state = NULL; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->thread_info.state)); + + while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) + if (o->detach) + o->detach(o); +} + +void pa_source_attach_within_thread(pa_source *s) { + pa_source_output *o; + void *state = NULL; + + pa_source_assert_ref(s); + pa_assert(PA_SOURCE_LINKED(s->thread_info.state)); + + while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) + if (o->attach) + o->attach(o); + +} |