diff options
Diffstat (limited to 'src/pulsecore/sink.c')
| -rw-r--r-- | src/pulsecore/sink.c | 1066 |
1 files changed, 1066 insertions, 0 deletions
diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c new file mode 100644 index 00000000..9adb6097 --- /dev/null +++ b/src/pulsecore/sink.c @@ -0,0 +1,1066 @@ +/* $Id$ */ + +/*** + 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 <stdlib.h> +#include <string.h> +#include <stdio.h> + +#include <pulse/introspect.h> +#include <pulse/utf8.h> +#include <pulse/xmalloc.h> + +#include <pulsecore/sink-input.h> +#include <pulsecore/namereg.h> +#include <pulsecore/core-util.h> +#include <pulsecore/sample-util.h> +#include <pulsecore/core-subscribe.h> +#include <pulsecore/log.h> +#include <pulsecore/macro.h> +#include <pulsecore/play-memblockq.h> + +#include "sink.h" + +#define MAX_MIX_CHANNELS 32 +#define MIX_BUFFER_LENGTH (PA_PAGE_SIZE) +#define SILENCE_BUFFER_LENGTH (PA_PAGE_SIZE*12) + +static PA_DEFINE_CHECK_TYPE(pa_sink, pa_msgobject); + +static void sink_free(pa_object *s); + +pa_sink* pa_sink_new( + pa_core *core, + const char *driver, + const char *name, + int fail, + const pa_sample_spec *spec, + const pa_channel_map *map) { + + pa_sink *s; + char *n = NULL; + 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(name && pa_utf8_valid(name) && *name); + + s = pa_msgobject_new(pa_sink); + + if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SINK, s, fail))) { + pa_xfree(s); + return NULL; + } + + s->parent.parent.free = sink_free; + s->parent.process_msg = pa_sink_process_msg; + + s->core = core; + s->state = PA_SINK_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->inputs = pa_idxset_new(NULL, NULL); + s->n_corked = 0; + + pa_cvolume_reset(&s->volume, spec->channels); + s->muted = FALSE; + s->refresh_volume = s->refresh_mute = 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; + s->silence = NULL; + + pa_assert_se(pa_idxset_put(core->sinks, s, &s->index) >= 0); + + pa_sample_spec_snprint(st, sizeof(st), spec); + pa_log_info("Created sink %u \"%s\" with sample spec \"%s\"", s->index, s->name, st); + + n = pa_sprintf_malloc("%s.monitor", name); + + if (!(s->monitor_source = pa_source_new(core, driver, n, 0, spec, map))) + pa_log_warn("Failed to create monitor source."); + else { + char *d; + s->monitor_source->monitor_of = s; + d = pa_sprintf_malloc("Monitor Source of %s", s->name); + pa_source_set_description(s->monitor_source, d); + pa_xfree(d); + } + + pa_xfree(n); + + s->thread_info.inputs = 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 sink_set_state(pa_sink *s, pa_sink_state_t state) { + int ret; + pa_bool_t suspend_change; + + pa_assert(s); + + if (s->state == state) + return 0; + + suspend_change = + (s->state == PA_SINK_SUSPENDED && PA_SINK_OPENED(state)) || + (PA_SINK_OPENED(s->state) && state == PA_SINK_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_SINK_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL) < 0) + return -1; + + s->state = state; + + if (suspend_change) { + pa_sink_input *i; + uint32_t idx; + + /* We're suspending or resuming, tell everyone about it */ + + for (i = PA_SINK_INPUT(pa_idxset_first(s->inputs, &idx)); i; i = PA_SINK_INPUT(pa_idxset_next(s->inputs, &idx))) + if (i->suspend) + i->suspend(i, state == PA_SINK_SUSPENDED); + } + + if (state != PA_SINK_UNLINKED) /* if we enter UNLINKED state pa_sink_unlink() will fire the apropriate events */ + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_STATE_CHANGED], s); + + return 0; +} + +void pa_sink_put(pa_sink* s) { + pa_sink_assert_ref(s); + + pa_assert(s->state == PA_SINK_INIT); + pa_assert(s->asyncmsgq); + pa_assert(s->rtpoll); + + pa_assert_se(sink_set_state(s, PA_SINK_IDLE) == 0); + + pa_source_put(s->monitor_source); + + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_NEW, s->index); + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_NEW_POST], s); +} + +void pa_sink_unlink(pa_sink* s) { + pa_bool_t linked; + pa_sink_input *i, *j = NULL; + + pa_assert(s); + + /* Please note that pa_sink_unlink() does more than simply + * reversing pa_sink_put(). It also undoes the registrations + * already done in pa_sink_new()! */ + + /* All operations here shall be idempotent, i.e. pa_sink_unlink() + * may be called multiple times on the same sink without bad + * effects. */ + + linked = PA_SINK_LINKED(s->state); + + if (linked) + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK], s); + + if (s->state != PA_SINK_UNLINKED) + pa_namereg_unregister(s->core, s->name); + pa_idxset_remove_by_data(s->core->sinks, s, NULL); + + while ((i = pa_idxset_first(s->inputs, NULL))) { + pa_assert(i != j); + pa_sink_input_kill(i); + j = i; + } + + if (linked) + sink_set_state(s, PA_SINK_UNLINKED); + else + s->state = PA_SINK_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 (s->monitor_source) + pa_source_unlink(s->monitor_source); + + if (linked) { + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK | PA_SUBSCRIPTION_EVENT_REMOVE, s->index); + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_UNLINK_POST], s); + } +} + +static void sink_free(pa_object *o) { + pa_sink *s = PA_SINK(o); + pa_sink_input *i; + + pa_assert(s); + pa_assert(pa_sink_refcnt(s) == 0); + + if (PA_SINK_LINKED(s->state)) + pa_sink_unlink(s); + + pa_log_info("Freeing sink %u \"%s\"", s->index, s->name); + + if (s->monitor_source) { + pa_source_unref(s->monitor_source); + s->monitor_source = NULL; + } + + pa_idxset_free(s->inputs, NULL, NULL); + + while ((i = pa_hashmap_steal_first(s->thread_info.inputs))) + pa_sink_input_unref(i); + + pa_hashmap_free(s->thread_info.inputs, NULL, NULL); + + if (s->silence) + pa_memblock_unref(s->silence); + + pa_xfree(s->name); + pa_xfree(s->description); + pa_xfree(s->driver); + pa_xfree(s); +} + +void pa_sink_set_asyncmsgq(pa_sink *s, pa_asyncmsgq *q) { + pa_sink_assert_ref(s); + pa_assert(q); + + s->asyncmsgq = q; + + if (s->monitor_source) + pa_source_set_asyncmsgq(s->monitor_source, q); +} + +void pa_sink_set_rtpoll(pa_sink *s, pa_rtpoll *p) { + pa_sink_assert_ref(s); + pa_assert(p); + + s->rtpoll = p; + if (s->monitor_source) + pa_source_set_rtpoll(s->monitor_source, p); +} + +int pa_sink_update_status(pa_sink*s) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->state)); + + if (s->state == PA_SINK_SUSPENDED) + return 0; + + return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE); +} + +int pa_sink_suspend(pa_sink *s, pa_bool_t suspend) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->state)); + + if (suspend) + return sink_set_state(s, PA_SINK_SUSPENDED); + else + return sink_set_state(s, pa_sink_used_by(s) ? PA_SINK_RUNNING : PA_SINK_IDLE); +} + +void pa_sink_ping(pa_sink *s) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->state)); + + pa_asyncmsgq_post(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_PING, NULL, 0, NULL, NULL); +} + +static unsigned fill_mix_info(pa_sink *s, size_t length, pa_mix_info *info, unsigned maxinfo) { + pa_sink_input *i; + unsigned n = 0; + void *state = NULL; + + pa_sink_assert_ref(s); + pa_assert(info); + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL)) && maxinfo > 0) { + pa_sink_input_assert_ref(i); + + if (pa_sink_input_peek(i, length, &info->chunk, &info->volume) < 0) + continue; + + info->userdata = pa_sink_input_ref(i); + + pa_assert(info->chunk.memblock); + pa_assert(info->chunk.length > 0); + + info++; + n++; + maxinfo--; + } + + return n; +} + +static void inputs_drop(pa_sink *s, pa_mix_info *info, unsigned n, size_t length) { + pa_sink_input *i; + void *state = NULL; + unsigned p = 0; + unsigned n_unreffed = 0; + + pa_sink_assert_ref(s); + + /* We optimize for the case where the order of the inputs has not changed */ + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) { + unsigned j; + pa_mix_info* m; + + pa_sink_input_assert_ref(i); + + m = NULL; + + /* Let's try to find the matching entry info the pa_mix_info array */ + for (j = 0; j < n; j ++) { + + if (info[p].userdata == i) { + m = info + p; + break; + } + + p++; + if (p >= n) + p = 0; + } + + /* Drop read data */ + pa_sink_input_drop(i, length); + + if (m) { + pa_sink_input_unref(m->userdata); + m->userdata = NULL; + if (m->chunk.memblock) + pa_memblock_unref(m->chunk.memblock); + pa_memchunk_reset(&m->chunk); + + n_unreffed += 1; + } + } + + /* Now drop references to entries that are included in the + * pa_mix_info array but don't exist anymore */ + + if (n_unreffed < n) { + for (; n > 0; info++, n--) { + if (info->userdata) + pa_sink_input_unref(info->userdata); + if (info->chunk.memblock) + pa_memblock_unref(info->chunk.memblock); + } + } +} + +void pa_sink_render(pa_sink*s, size_t length, pa_memchunk *result) { + pa_mix_info info[MAX_MIX_CHANNELS]; + unsigned n; + size_t block_size_max; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_OPENED(s->thread_info.state)); + pa_assert(pa_frame_aligned(length, &s->sample_spec)); + pa_assert(result); + + pa_sink_ref(s); + + if (length <= 0) + length = pa_frame_align(MIX_BUFFER_LENGTH, &s->sample_spec); + + block_size_max = pa_mempool_block_size_max(s->core->mempool); + if (length > block_size_max) + length = pa_frame_align(block_size_max, &s->sample_spec); + + pa_assert(length > 0); + + n = s->thread_info.state == PA_SINK_RUNNING ? fill_mix_info(s, length, info, MAX_MIX_CHANNELS) : 0; + + if (n == 0) { + + if (length > SILENCE_BUFFER_LENGTH) + length = pa_frame_align(SILENCE_BUFFER_LENGTH, &s->sample_spec); + + pa_assert(length > 0); + + if (!s->silence || pa_memblock_get_length(s->silence) < length) { + if (s->silence) + pa_memblock_unref(s->silence); + s->silence = pa_silence_memblock_new(s->core->mempool, &s->sample_spec, length); + } + + result->memblock = pa_memblock_ref(s->silence); + result->length = length; + result->index = 0; + + } else if (n == 1) { + pa_cvolume volume; + + *result = info[0].chunk; + pa_memblock_ref(result->memblock); + + if (result->length > length) + result->length = length; + + pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume); + + if (s->thread_info.soft_muted || !pa_cvolume_is_norm(&volume)) { + pa_memchunk_make_writable(result, 0); + if (s->thread_info.soft_muted || pa_cvolume_is_muted(&volume)) + pa_silence_memchunk(result, &s->sample_spec); + else + pa_volume_memchunk(result, &s->sample_spec, &volume); + } + } else { + void *ptr; + result->memblock = pa_memblock_new(s->core->mempool, length); + + ptr = pa_memblock_acquire(result->memblock); + result->length = pa_mix(info, n, ptr, length, &s->sample_spec, &s->thread_info.soft_volume, s->thread_info.soft_muted); + pa_memblock_release(result->memblock); + + result->index = 0; + } + + if (s->thread_info.state == PA_SINK_RUNNING) + inputs_drop(s, info, n, result->length); + + if (s->monitor_source && PA_SOURCE_OPENED(pa_source_get_state(s->monitor_source))) + pa_source_post(s->monitor_source, result); + + pa_sink_unref(s); +} + +void pa_sink_render_into(pa_sink*s, pa_memchunk *target) { + pa_mix_info info[MAX_MIX_CHANNELS]; + unsigned n; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_OPENED(s->thread_info.state)); + pa_assert(target); + pa_assert(target->memblock); + pa_assert(target->length > 0); + pa_assert(pa_frame_aligned(target->length, &s->sample_spec)); + + pa_sink_ref(s); + + n = s->thread_info.state == PA_SINK_RUNNING ? fill_mix_info(s, target->length, info, MAX_MIX_CHANNELS) : 0; + + if (n == 0) { + pa_silence_memchunk(target, &s->sample_spec); + } else if (n == 1) { + if (target->length > info[0].chunk.length) + target->length = info[0].chunk.length; + + if (s->thread_info.soft_muted) + pa_silence_memchunk(target, &s->sample_spec); + else { + void *src, *ptr; + pa_cvolume volume; + + ptr = pa_memblock_acquire(target->memblock); + src = pa_memblock_acquire(info[0].chunk.memblock); + + memcpy((uint8_t*) ptr + target->index, + (uint8_t*) src + info[0].chunk.index, + target->length); + + pa_memblock_release(target->memblock); + pa_memblock_release(info[0].chunk.memblock); + + pa_sw_cvolume_multiply(&volume, &s->thread_info.soft_volume, &info[0].volume); + + if (!pa_cvolume_is_norm(&volume)) + pa_volume_memchunk(target, &s->sample_spec, &volume); + } + + } else { + void *ptr; + + ptr = pa_memblock_acquire(target->memblock); + + target->length = pa_mix(info, n, + (uint8_t*) ptr + target->index, + target->length, + &s->sample_spec, + &s->thread_info.soft_volume, + s->thread_info.soft_muted); + + pa_memblock_release(target->memblock); + } + + if (s->thread_info.state == PA_SINK_RUNNING) + inputs_drop(s, info, n, target->length); + + if (s->monitor_source && PA_SOURCE_OPENED(pa_source_get_state(s->monitor_source))) + pa_source_post(s->monitor_source, target); + + pa_sink_unref(s); +} + +void pa_sink_render_into_full(pa_sink *s, pa_memchunk *target) { + pa_memchunk chunk; + size_t l, d; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_OPENED(s->thread_info.state)); + pa_assert(target); + pa_assert(target->memblock); + pa_assert(target->length > 0); + pa_assert(pa_frame_aligned(target->length, &s->sample_spec)); + + pa_sink_ref(s); + + l = target->length; + d = 0; + while (l > 0) { + chunk = *target; + chunk.index += d; + chunk.length -= d; + + pa_sink_render_into(s, &chunk); + + d += chunk.length; + l -= chunk.length; + } + + pa_sink_unref(s); +} + +void pa_sink_render_full(pa_sink *s, size_t length, pa_memchunk *result) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_OPENED(s->thread_info.state)); + pa_assert(length > 0); + pa_assert(pa_frame_aligned(length, &s->sample_spec)); + pa_assert(result); + + /*** This needs optimization ***/ + + result->index = 0; + result->length = length; + result->memblock = pa_memblock_new(s->core->mempool, length); + + pa_sink_render_into_full(s, result); +} + +void pa_sink_skip(pa_sink *s, size_t length) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_OPENED(s->thread_info.state)); + pa_assert(length > 0); + pa_assert(pa_frame_aligned(length, &s->sample_spec)); + + if (pa_source_used_by(s->monitor_source)) { + pa_memchunk chunk; + + /* If something is connected to our monitor source, we have to + * pass valid data to it */ + + while (length > 0) { + pa_sink_render(s, length, &chunk); + pa_memblock_unref(chunk.memblock); + + pa_assert(chunk.length <= length); + length -= chunk.length; + } + + } else { + /* Ok, noone cares about the rendered data, so let's not even render it */ + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) { + pa_sink_input_assert_ref(i); + pa_sink_input_drop(i, length); + } + } +} + +pa_usec_t pa_sink_get_latency(pa_sink *s) { + pa_usec_t usec = 0; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->state)); + + if (!PA_SINK_OPENED(s->state)) + return 0; + + if (s->get_latency) + return s->get_latency(s); + + if (pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_LATENCY, &usec, 0, NULL) < 0) + return 0; + + return usec; +} + +void pa_sink_set_volume(pa_sink *s, const pa_cvolume *volume) { + int changed; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_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_SINK_MESSAGE_SET_VOLUME, pa_xnewdup(struct pa_cvolume, volume, 1), 0, NULL, pa_xfree); + + if (changed) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); +} + +const pa_cvolume *pa_sink_get_volume(pa_sink *s) { + struct pa_cvolume old_volume; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_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_SINK_MESSAGE_GET_VOLUME, &s->volume, 0, NULL); + + if (!pa_cvolume_equal(&old_volume, &s->volume)) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + + return &s->volume; +} + +void pa_sink_set_mute(pa_sink *s, pa_bool_t mute) { + int changed; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_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_SINK_MESSAGE_SET_MUTE, PA_UINT_TO_PTR(mute), 0, NULL, NULL); + + if (changed) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); +} + +pa_bool_t pa_sink_get_mute(pa_sink *s) { + pa_bool_t old_muted; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_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_mute) + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_GET_MUTE, &s->muted, 0, NULL); + + if (old_muted != s->muted) + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + + return s->muted; +} + +void pa_sink_set_module(pa_sink *s, pa_module *m) { + pa_sink_assert_ref(s); + + if (s->module == m) + return; + + s->module = m; + + if (s->monitor_source) + pa_source_set_module(s->monitor_source, m); + + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); +} + +void pa_sink_set_description(pa_sink *s, const char *description) { + pa_sink_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 (s->monitor_source) { + char *n; + + n = pa_sprintf_malloc("Monitor Source of %s", s->description? s->description : s->name); + pa_source_set_description(s->monitor_source, n); + pa_xfree(n); + } + + if (PA_SINK_LINKED(s->state)) { + pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SINK|PA_SUBSCRIPTION_EVENT_CHANGE, s->index); + pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SINK_DESCRIPTION_CHANGED], s); + } +} + +unsigned pa_sink_linked_by(pa_sink *s) { + unsigned ret; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->state)); + + ret = pa_idxset_size(s->inputs); + + /* We add in the number of streams connected to us here. Please + * not the asymmmetry to pa_sink_used_by()! */ + + if (s->monitor_source) + ret += pa_source_linked_by(s->monitor_source); + + return ret; +} + +unsigned pa_sink_used_by(pa_sink *s) { + unsigned ret; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->state)); + + ret = pa_idxset_size(s->inputs); + pa_assert(ret >= s->n_corked); + ret -= s->n_corked; + + /* Streams connected to our monitor source do not matter for + * pa_sink_used_by()!.*/ + + return ret; +} + +int pa_sink_process_msg(pa_msgobject *o, int code, void *userdata, int64_t offset, pa_memchunk *chunk) { + pa_sink *s = PA_SINK(o); + pa_sink_assert_ref(s); + pa_assert(s->thread_info.state != PA_SINK_UNLINKED); + + switch ((pa_sink_message_t) code) { + + case PA_SINK_MESSAGE_ADD_INPUT: { + pa_sink_input *i = PA_SINK_INPUT(userdata); + pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index), pa_sink_input_ref(i)); + + /* Since the caller sleeps in pa_sink_input_put(), we can + * safely access data outside of thread_info even though + * it is mutable */ + + if ((i->thread_info.sync_prev = i->sync_prev)) { + pa_assert(i->sink == i->thread_info.sync_prev->sink); + pa_assert(i->sync_prev->sync_next == i); + i->thread_info.sync_prev->thread_info.sync_next = i; + } + + if ((i->thread_info.sync_next = i->sync_next)) { + pa_assert(i->sink == i->thread_info.sync_next->sink); + pa_assert(i->sync_next->sync_prev == i); + i->thread_info.sync_next->thread_info.sync_prev = i; + } + + pa_assert(!i->thread_info.attached); + i->thread_info.attached = TRUE; + + if (i->attach) + i->attach(i); + + /* If you change anything here, make sure to change the + * ghost sink input handling a few lines down at + * PA_SINK_MESSAGE_REMOVE_INPUT_AND_BUFFER, too. */ + + return 0; + } + + case PA_SINK_MESSAGE_REMOVE_INPUT: { + pa_sink_input *i = PA_SINK_INPUT(userdata); + + /* If you change anything here, make sure to change the + * sink input handling a few lines down at + * PA_SINK_MESSAGE_REMOVE_INPUT_AND_BUFFER, too. */ + + if (i->detach) + i->detach(i); + + pa_assert(i->thread_info.attached); + i->thread_info.attached = FALSE; + + /* Since the caller sleeps in pa_sink_input_unlink(), + * we can safely access data outside of thread_info even + * though it is mutable */ + + pa_assert(!i->thread_info.sync_prev); + pa_assert(!i->thread_info.sync_next); + + if (i->thread_info.sync_prev) { + i->thread_info.sync_prev->thread_info.sync_next = i->thread_info.sync_prev->sync_next; + i->thread_info.sync_prev = NULL; + } + + if (i->thread_info.sync_next) { + i->thread_info.sync_next->thread_info.sync_prev = i->thread_info.sync_next->sync_prev; + i->thread_info.sync_next = NULL; + } + + if (pa_hashmap_remove(s->thread_info.inputs, PA_UINT32_TO_PTR(i->index))) + pa_sink_input_unref(i); + + return 0; + } + + case PA_SINK_MESSAGE_REMOVE_INPUT_AND_BUFFER: { + pa_sink_input_move_info *info = userdata; + int volume_is_norm; + + /* We don't support moving synchronized streams. */ + pa_assert(!info->sink_input->sync_prev); + pa_assert(!info->sink_input->sync_next); + pa_assert(!info->sink_input->thread_info.sync_next); + pa_assert(!info->sink_input->thread_info.sync_prev); + + if (info->sink_input->detach) + info->sink_input->detach(info->sink_input); + + pa_assert(info->sink_input->thread_info.attached); + info->sink_input->thread_info.attached = FALSE; + + if (info->ghost_sink_input) { + pa_assert(info->buffer_bytes > 0); + pa_assert(info->buffer); + + volume_is_norm = pa_cvolume_is_norm(&info->sink_input->thread_info.volume); + + pa_log_debug("Buffering %lu bytes ...", (unsigned long) info->buffer_bytes); + + while (info->buffer_bytes > 0) { + pa_memchunk memchunk; + pa_cvolume volume; + size_t n; + + if (pa_sink_input_peek(info->sink_input, info->buffer_bytes, &memchunk, &volume) < 0) + break; + + n = memchunk.length > info->buffer_bytes ? info->buffer_bytes : memchunk.length; + pa_sink_input_drop(info->sink_input, n); + memchunk.length = n; + + if (!volume_is_norm) { + pa_memchunk_make_writable(&memchunk, 0); + pa_volume_memchunk(&memchunk, &s->sample_spec, &volume); + } + + if (pa_memblockq_push(info->buffer, &memchunk) < 0) { + pa_memblock_unref(memchunk.memblock); + break; + } + + pa_memblock_unref(memchunk.memblock); + info->buffer_bytes -= n; + } + + /* Add the remaining already resampled chunk to the buffer */ + if (info->sink_input->thread_info.resampled_chunk.memblock) + pa_memblockq_push(info->buffer, &info->sink_input->thread_info.resampled_chunk); + + pa_memblockq_sink_input_set_queue(info->ghost_sink_input, info->buffer); + + pa_log_debug("Buffered %lu bytes ...", (unsigned long) pa_memblockq_get_length(info->buffer)); + } + + /* Let's remove the sink input ...*/ + if (pa_hashmap_remove(s->thread_info.inputs, PA_UINT32_TO_PTR(info->sink_input->index))) + pa_sink_input_unref(info->sink_input); + + /* .. and add the ghost sink input instead */ + if (info->ghost_sink_input) { + pa_hashmap_put(s->thread_info.inputs, PA_UINT32_TO_PTR(info->ghost_sink_input->index), pa_sink_input_ref(info->ghost_sink_input)); + info->ghost_sink_input->thread_info.sync_prev = info->ghost_sink_input->thread_info.sync_next = NULL; + + pa_assert(!info->ghost_sink_input->thread_info.attached); + info->ghost_sink_input->thread_info.attached = TRUE; + + if (info->ghost_sink_input->attach) + info->ghost_sink_input->attach(info->ghost_sink_input); + } + + return 0; + } + + case PA_SINK_MESSAGE_SET_VOLUME: + s->thread_info.soft_volume = *((pa_cvolume*) userdata); + return 0; + + case PA_SINK_MESSAGE_SET_MUTE: + s->thread_info.soft_muted = PA_PTR_TO_UINT(userdata); + return 0; + + case PA_SINK_MESSAGE_GET_VOLUME: + *((pa_cvolume*) userdata) = s->thread_info.soft_volume; + return 0; + + case PA_SINK_MESSAGE_GET_MUTE: + *((pa_bool_t*) userdata) = s->thread_info.soft_muted; + return 0; + + case PA_SINK_MESSAGE_PING: + return 0; + + case PA_SINK_MESSAGE_SET_STATE: + + s->thread_info.state = PA_PTR_TO_UINT(userdata); + return 0; + + case PA_SINK_MESSAGE_DETACH: + + /* We're detaching all our input streams so that the + * asyncmsgq and rtpoll fields can be changed without + * problems */ + pa_sink_detach_within_thread(s); + break; + + case PA_SINK_MESSAGE_ATTACH: + + /* Reattach all streams */ + pa_sink_attach_within_thread(s); + break; + + case PA_SINK_MESSAGE_GET_LATENCY: + case PA_SINK_MESSAGE_MAX: + ; + } + + return -1; +} + +int pa_sink_suspend_all(pa_core *c, pa_bool_t suspend) { + pa_sink *sink; + uint32_t idx; + int ret = 0; + + pa_core_assert_ref(c); + + for (sink = PA_SINK(pa_idxset_first(c->sinks, &idx)); sink; sink = PA_SINK(pa_idxset_next(c->sinks, &idx))) + ret -= pa_sink_suspend(sink, suspend) < 0; + + return ret; +} + +void pa_sink_detach(pa_sink *s) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->state)); + + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_DETACH, NULL, 0, NULL); +} + +void pa_sink_attach(pa_sink *s) { + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->state)); + + pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SINK_MESSAGE_ATTACH, NULL, 0, NULL); +} + +void pa_sink_detach_within_thread(pa_sink *s) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->thread_info.state)); + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + if (i->detach) + i->detach(i); + + if (s->monitor_source) + pa_source_detach_within_thread(s->monitor_source); +} + +void pa_sink_attach_within_thread(pa_sink *s) { + pa_sink_input *i; + void *state = NULL; + + pa_sink_assert_ref(s); + pa_assert(PA_SINK_LINKED(s->thread_info.state)); + + while ((i = pa_hashmap_iterate(s->thread_info.inputs, &state, NULL))) + if (i->attach) + i->attach(i); + + if (s->monitor_source) + pa_source_attach_within_thread(s->monitor_source); +} |