X-Git-Url: https://code.delx.au/pulseaudio/blobdiff_plain/c90dd53268bec8516be3b37e8af1989290f022a2..11cc072a1eef2c8b26e9e642b8bf64c63da8b8ec:/src/pulsecore/source.c

diff --git a/src/pulsecore/source.c b/src/pulsecore/source.c
index f9c0703d..edbbf017 100644
--- a/src/pulsecore/source.c
+++ b/src/pulsecore/source.c
@@ -1,18 +1,19 @@
-/* $Id$ */
-
 /***
   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
@@ -24,12 +25,12 @@
 #endif
 
 #include <stdio.h>
-#include <assert.h>
 #include <stdlib.h>
 #include <string.h>
 
 #include <pulse/utf8.h>
 #include <pulse/xmalloc.h>
+#include <pulse/timeval.h>
 
 #include <pulsecore/source-output.h>
 #include <pulsecore/namereg.h>
@@ -39,293 +40,970 @@
 
 #include "source.h"
 
-#define CHECK_VALIDITY_RETURN_NULL(condition) \
-do {\
-if (!(condition)) \
-    return NULL; \
-} while (0)
+#define DEFAULT_MIN_LATENCY (4*PA_USEC_PER_MSEC)
+
+static PA_DEFINE_CHECK_TYPE(pa_source, pa_msgobject);
+
+static void source_free(pa_object *o);
+
+pa_source_new_data* pa_source_new_data_init(pa_source_new_data *data) {
+    pa_assert(data);
+
+    memset(data, 0, sizeof(*data));
+    data->proplist = pa_proplist_new();
+
+    return data;
+}
+
+void pa_source_new_data_set_name(pa_source_new_data *data, const char *name) {
+    pa_assert(data);
+
+    pa_xfree(data->name);
+    data->name = pa_xstrdup(name);
+}
+
+void pa_source_new_data_set_sample_spec(pa_source_new_data *data, const pa_sample_spec *spec) {
+    pa_assert(data);
+
+    if ((data->sample_spec_is_set = !!spec))
+        data->sample_spec = *spec;
+}
+
+void pa_source_new_data_set_channel_map(pa_source_new_data *data, const pa_channel_map *map) {
+    pa_assert(data);
+
+    if ((data->channel_map_is_set = !!map))
+        data->channel_map = *map;
+}
+
+void pa_source_new_data_set_volume(pa_source_new_data *data, const pa_cvolume *volume) {
+    pa_assert(data);
+
+    if ((data->volume_is_set = !!volume))
+        data->volume = *volume;
+}
+
+void pa_source_new_data_set_muted(pa_source_new_data *data, pa_bool_t mute) {
+    pa_assert(data);
+
+    data->muted_is_set = TRUE;
+    data->muted = !!mute;
+}
+
+void pa_source_new_data_done(pa_source_new_data *data) {
+    pa_assert(data);
+
+    pa_xfree(data->name);
+    pa_proplist_free(data->proplist);
+}
 
+/* Called from main context */
+static void reset_callbacks(pa_source *s) {
+    pa_assert(s);
+
+    s->set_state = NULL;
+    s->get_volume = NULL;
+    s->set_volume = NULL;
+    s->get_mute = NULL;
+    s->set_mute = NULL;
+    s->update_requested_latency = NULL;
+}
+
+/* Called from main context */
 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_new_data *data,
+        pa_source_flags_t flags) {
+
     pa_source *s;
-    char st[256];
-    int r;
-    pa_channel_map tmap;
-    
-    assert(core);
-    assert(name);
-    assert(spec);
+    const char *name;
+    char st[PA_SAMPLE_SPEC_SNPRINT_MAX], cm[PA_CHANNEL_MAP_SNPRINT_MAX];
 
-    CHECK_VALIDITY_RETURN_NULL(pa_sample_spec_valid(spec));
+    pa_assert(core);
+    pa_assert(data);
+    pa_assert(data->name);
 
-    if (!map)
-        map = pa_channel_map_init_auto(&tmap, spec->channels, PA_CHANNEL_MAP_DEFAULT);
+    s = pa_msgobject_new(pa_source);
 
-    CHECK_VALIDITY_RETURN_NULL(map && pa_channel_map_valid(map));
-    CHECK_VALIDITY_RETURN_NULL(map->channels == spec->channels);
-    CHECK_VALIDITY_RETURN_NULL(!driver || pa_utf8_valid(driver));
-    CHECK_VALIDITY_RETURN_NULL(pa_utf8_valid(name) && *name);
+    if (!(name = pa_namereg_register(core, data->name, PA_NAMEREG_SOURCE, s, data->namereg_fail))) {
+        pa_xfree(s);
+        return NULL;
+    }
 
-    s = pa_xnew(pa_source, 1);
+    pa_source_new_data_set_name(data, name);
 
-    if (!(name = pa_namereg_register(core, name, PA_NAMEREG_SOURCE, s, fail))) {
+    if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_NEW], data) < 0) {
         pa_xfree(s);
+        pa_namereg_unregister(core, name);
         return NULL;
     }
 
-    s->ref = 1;
+    pa_return_null_if_fail(!data->driver || pa_utf8_valid(data->driver));
+    pa_return_null_if_fail(data->name && pa_utf8_valid(data->name) && data->name[0]);
+
+    pa_return_null_if_fail(data->sample_spec_is_set && pa_sample_spec_valid(&data->sample_spec));
+
+    if (!data->channel_map_is_set)
+        pa_return_null_if_fail(pa_channel_map_init_auto(&data->channel_map, data->sample_spec.channels, PA_CHANNEL_MAP_DEFAULT));
+
+    pa_return_null_if_fail(pa_channel_map_valid(&data->channel_map));
+    pa_return_null_if_fail(data->channel_map.channels == data->sample_spec.channels);
+
+    if (!data->volume_is_set)
+        pa_cvolume_reset(&data->volume, data->sample_spec.channels);
+
+    pa_return_null_if_fail(pa_cvolume_valid(&data->volume));
+    pa_return_null_if_fail(data->volume.channels == data->sample_spec.channels);
+
+    if (!data->muted_is_set)
+        data->muted = FALSE;
+
+    if (pa_hook_fire(&core->hooks[PA_CORE_HOOK_SOURCE_FIXATE], data) < 0) {
+        pa_xfree(s);
+        pa_namereg_unregister(core, name);
+        return NULL;
+    }
+
+    s->parent.parent.free = source_free;
+    s->parent.process_msg = pa_source_process_msg;
+
     s->core = core;
-    s->state = PA_SOURCE_RUNNING;
+    s->state = PA_SOURCE_INIT;
+    s->flags = flags;
     s->name = pa_xstrdup(name);
-    s->description = NULL;
-    s->driver = pa_xstrdup(driver);
-    s->owner = NULL;
-    
-    s->sample_spec = *spec;
-    s->channel_map = *map;
+    s->proplist = pa_proplist_copy(data->proplist);
+    s->driver = pa_xstrdup(data->driver);
+    s->module = data->module;
+
+    s->sample_spec = data->sample_spec;
+    s->channel_map = data->channel_map;
 
     s->outputs = pa_idxset_new(NULL, NULL);
+    s->n_corked = 0;
     s->monitor_of = NULL;
 
-    pa_cvolume_reset(&s->sw_volume, spec->channels);
-    pa_cvolume_reset(&s->hw_volume, spec->channels);
-    s->sw_muted = 0;
-    s->hw_muted = 0;
-
-    s->is_hardware = 0;
+    s->volume = data->volume;
+    s->muted = data->muted;
+    s->refresh_volume = s->refresh_muted = FALSE;
 
-    s->get_latency = NULL;
-    s->notify = NULL;
-    s->set_hw_volume = NULL;
-    s->get_hw_volume = NULL;
-    s->set_hw_mute = NULL;
-    s->get_hw_mute = NULL;
+    reset_callbacks(s);
     s->userdata = NULL;
 
-    r = pa_idxset_put(core->sources, s, &s->index);
-    assert(s->index != PA_IDXSET_INVALID && r >= 0);
-
-    pa_sample_spec_snprint(st, sizeof(st), spec);
-    pa_log_info(__FILE__": created %u \"%s\" with sample spec \"%s\"", s->index, s->name, st); 
+    s->asyncmsgq = NULL;
+    s->rtpoll = NULL;
+
+    pa_silence_memchunk_get(
+            &core->silence_cache,
+            core->mempool,
+            &s->silence,
+            &s->sample_spec,
+            0);
+
+    s->thread_info.outputs = pa_hashmap_new(pa_idxset_trivial_hash_func, pa_idxset_trivial_compare_func);
+    pa_cvolume_reset(&s->thread_info.soft_volume, s->sample_spec.channels);
+    s->thread_info.soft_muted = FALSE;
+    s->thread_info.state = s->state;
+    s->thread_info.max_rewind = 0;
+    s->thread_info.requested_latency_valid = FALSE;
+    s->thread_info.requested_latency = 0;
+    s->thread_info.min_latency = DEFAULT_MIN_LATENCY;
+    s->thread_info.max_latency = 0;
+
+    pa_assert_se(pa_idxset_put(core->sources, s, &s->index) >= 0);
+
+    pa_log_info("Created source %u \"%s\" with sample spec %s and channel map %s",
+                s->index,
+                s->name,
+                pa_sample_spec_snprint(st, sizeof(st), &s->sample_spec),
+                pa_channel_map_snprint(cm, sizeof(cm), &s->channel_map));
 
-    pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_NEW, s->index);
-    
     return s;
 }
 
-void pa_source_disconnect(pa_source *s) {
+/* Called from main context */
+static int source_set_state(pa_source *s, pa_source_state_t state) {
+    int ret;
+    pa_bool_t suspend_change;
+    pa_source_state_t original_state;
+
+    pa_assert(s);
+
+    if (s->state == state)
+        return 0;
+
+    original_state = s->state;
+
+    suspend_change =
+        (original_state == PA_SOURCE_SUSPENDED && PA_SOURCE_IS_OPENED(state)) ||
+        (PA_SOURCE_IS_OPENED(original_state) && state == PA_SOURCE_SUSPENDED);
+
+    if (s->set_state)
+        if ((ret = s->set_state(s, state)) < 0)
+            return ret;
+
+    if (s->asyncmsgq)
+        if ((ret = pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_STATE, PA_UINT_TO_PTR(state), 0, NULL)) < 0) {
+
+            if (s->set_state)
+                s->set_state(s, original_state);
+
+            return ret;
+        }
+
+    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_SOURCE_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;
+}
+
+/* Called from main context */
+void pa_source_put(pa_source *s) {
+    pa_source_assert_ref(s);
+
+    pa_assert(s->state == PA_SOURCE_INIT);
+
+    /* The following fields must be initialized properly when calling _put() */
+    pa_assert(s->asyncmsgq);
+    pa_assert(s->rtpoll);
+    pa_assert(!s->thread_info.min_latency || !s->thread_info.max_latency ||
+              s->thread_info.min_latency <= s->thread_info.max_latency);
+
+    if (!(s->flags & PA_SOURCE_HW_VOLUME_CTRL)) {
+        s->flags |= PA_SOURCE_DECIBEL_VOLUME;
+
+        s->thread_info.soft_volume = s->volume;
+        s->thread_info.soft_muted = s->muted;
+    }
+
+    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_PUT], s);
+}
+
+/* Called from main context */
+void pa_source_unlink(pa_source *s) {
+    pa_bool_t linked;
     pa_source_output *o, *j = NULL;
-    
-    assert(s);
-    assert(s->state == PA_SOURCE_RUNNING);
 
-    pa_namereg_unregister(s->core, s->name);
-    
+    pa_assert(s);
+
+    /* See pa_sink_unlink() for a couple of comments how this function
+     * works. */
+
+    linked = PA_SOURCE_IS_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))) {
-        assert(o != j);
+        pa_assert(o != j);
         pa_source_output_kill(o);
         j = o;
     }
 
-    pa_idxset_remove_by_data(s->core->sources, s, NULL);
+    if (linked)
+        source_set_state(s, PA_SOURCE_UNLINKED);
+    else
+        s->state = PA_SOURCE_UNLINKED;
+
+    reset_callbacks(s);
+
+    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);
+    }
+}
+
+/* Called from main context */
+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_IS_LINKED(s->state))
+        pa_source_unlink(s);
 
-    s->get_latency = NULL;
-    s->notify = NULL;
-    s->get_hw_volume = NULL;
-    s->set_hw_volume = NULL;
-    s->set_hw_mute = NULL;
-    s->get_hw_mute = NULL;
-    
-    s->state = PA_SOURCE_DISCONNECTED;
-    pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE | PA_SUBSCRIPTION_EVENT_REMOVE, s->index);
-}
-
-static void source_free(pa_source *s) {
-    assert(s);
-    assert(!s->ref);
-    
-    if (s->state != PA_SOURCE_DISCONNECTED)
-        pa_source_disconnect(s);
-    
-    pa_log_info(__FILE__": freed %u \"%s\"", s->index, s->name); 
+    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);
+
+    if (s->silence.memblock)
+        pa_memblock_unref(s->silence.memblock);
+
     pa_xfree(s->name);
-    pa_xfree(s->description);
     pa_xfree(s->driver);
+
+    if (s->proplist)
+        pa_proplist_free(s->proplist);
+
     pa_xfree(s);
 }
 
-void pa_source_unref(pa_source *s) {
-    assert(s);
-    assert(s->ref >= 1);
+/* Called from main context */
+void pa_source_set_asyncmsgq(pa_source *s, pa_asyncmsgq *q) {
+    pa_source_assert_ref(s);
 
-    if (!(--s->ref))
-        source_free(s);
+    s->asyncmsgq = q;
 }
 
-pa_source* pa_source_ref(pa_source *s) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    s->ref++;
-    return s;
+/* Called from main context */
+void pa_source_set_rtpoll(pa_source *s, pa_rtpoll *p) {
+    pa_source_assert_ref(s);
+
+    s->rtpoll = p;
+}
+
+/* Called from main context */
+int pa_source_update_status(pa_source*s) {
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_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);
 }
 
-void pa_source_notify(pa_source*s) {
-    assert(s);
-    assert(s->ref >= 1);
+/* Called from main context */
+int pa_source_suspend(pa_source *s, pa_bool_t suspend) {
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
 
-    if (s->notify)
-        s->notify(s);
+    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);
 }
 
-static int do_post(void *p, PA_GCC_UNUSED uint32_t idx, PA_GCC_UNUSED int *del, void*userdata) {
-    pa_source_output *o = p;
-    const pa_memchunk *chunk = userdata;
-    
-    assert(o);
-    assert(chunk);
+/* Called from IO thread context */
+void pa_source_process_rewind(pa_source *s, size_t nbytes) {
+    pa_source_output *o;
+    void *state = NULL;
 
-    pa_source_output_push(o, chunk);
-    return 0;
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
+
+    if (nbytes <= 0)
+        return;
+
+    pa_log_debug("Processing rewind...");
+
+    while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
+        pa_source_output_assert_ref(o);
+        pa_source_output_process_rewind(o, nbytes);
+    }
 }
 
+/* Called from IO thread context */
 void pa_source_post(pa_source*s, const pa_memchunk *chunk) {
-    assert(s);
-    assert(s->ref >= 1);
-    assert(chunk);
+    pa_source_output *o;
+    void *state = NULL;
+
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
+    pa_assert(chunk);
 
-    pa_source_ref(s);
+    if (s->thread_info.state != PA_SOURCE_RUNNING)
+        return;
 
-    if (s->sw_muted || !pa_cvolume_is_norm(&s->sw_volume)) {
+    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, s->core->memblock_stat, 0);
-        if (s->sw_muted)
+        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->sw_volume);
-        pa_idxset_foreach(s->outputs, do_post, &vchunk);
+            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_assert_ref(o);
+
+            if (!o->thread_info.direct_on_input)
+                pa_source_output_push(o, &vchunk);
+        }
+
         pa_memblock_unref(vchunk.memblock);
-    } else
-        pa_idxset_foreach(s->outputs, do_post, (void*) chunk);
+    } else {
+
+        while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL))) {
+            pa_source_output_assert_ref(o);
 
-    pa_source_unref(s);
+            if (!o->thread_info.direct_on_input)
+                pa_source_output_push(o, chunk);
+        }
+    }
 }
 
-void pa_source_set_owner(pa_source *s, pa_module *m) {
-    assert(s);
-    assert(s->ref >= 1);
-    
-    s->owner = m;
+/* Called from IO thread context */
+void pa_source_post_direct(pa_source*s, pa_source_output *o, const pa_memchunk *chunk) {
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_OPENED(s->thread_info.state));
+    pa_source_output_assert_ref(o);
+    pa_assert(o->thread_info.direct_on_input);
+    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);
+
+        pa_source_output_push(o, &vchunk);
+
+        pa_memblock_unref(vchunk.memblock);
+    } else
+        pa_source_output_push(o, chunk);
 }
 
+/* Called from main thread */
 pa_usec_t pa_source_get_latency(pa_source *s) {
-    assert(s);
-    assert(s->ref >= 1);
+    pa_usec_t usec;
 
-    if (!s->get_latency)
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
+
+    if (!PA_SOURCE_IS_OPENED(s->state))
         return 0;
 
-    return s->get_latency(s);
+    pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY, &usec, 0, NULL) == 0);
+
+    return usec;
 }
 
-void pa_source_set_volume(pa_source *s, pa_mixer_t m, const pa_cvolume *volume) {
-    pa_cvolume *v;
-    
-    assert(s);
-    assert(s->ref >= 1);
-    assert(volume);
+/* Called from main thread */
+void pa_source_set_volume(pa_source *s, const pa_cvolume *volume) {
+    pa_bool_t changed;
 
-    if (m == PA_MIXER_HARDWARE && s->set_hw_volume) 
-        v = &s->hw_volume;
-    else
-        v = &s->sw_volume;
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
+    pa_assert(volume);
 
-    if (pa_cvolume_equal(v, volume))
-        return;
-        
-    *v = *volume;
+    changed = !pa_cvolume_equal(volume, &s->volume);
+    s->volume = *volume;
 
-    if (v == &s->hw_volume)
-        if (s->set_hw_volume(s) < 0)
-            s->sw_volume =  *volume;
+    if (s->set_volume && s->set_volume(s) < 0)
+        s->set_volume = NULL;
 
-    pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
+    if (!s->set_volume)
+        pa_source_set_soft_volume(s, volume);
+
+    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_mixer_t m) {
-    assert(s);
-    assert(s->ref >= 1);
+/* Called from main thread */
+void pa_source_set_soft_volume(pa_source *s, const pa_cvolume *volume) {
+    pa_source_assert_ref(s);
+    pa_assert(volume);
 
-    if (m == PA_MIXER_HARDWARE && s->set_hw_volume) {
+    if (PA_SOURCE_IS_LINKED(s->state))
+        pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_VOLUME, volume, 0, NULL);
+    else
+        s->thread_info.soft_volume = *volume;
+}
 
-        if (s->get_hw_volume)
-            s->get_hw_volume(s);
-        
-        return &s->hw_volume;
-    } else
-        return &s->sw_volume;
+/* Called from main thread */
+const pa_cvolume *pa_source_get_volume(pa_source *s, pa_bool_t force_refresh) {
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
+
+    if (s->refresh_volume || force_refresh) {
+        pa_cvolume old_volume = s->volume;
+
+        if (s->get_volume && s->get_volume(s) < 0)
+            s->get_volume = NULL;
+
+        if (!s->get_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_mixer_t m, int mute) {
-    int *t;
-    
-    assert(s);
-    assert(s->ref >= 1);
+/* Called from main thread */
+void pa_source_set_mute(pa_source *s, pa_bool_t mute) {
+    pa_bool_t changed;
 
-    if (m == PA_MIXER_HARDWARE && s->set_hw_mute) 
-        t = &s->hw_muted;
-    else
-        t = &s->sw_muted;
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
 
-    if (!!*t == !!mute)
-        return;
-        
-    *t = !!mute;
+    changed = s->muted != mute;
+    s->muted = mute;
 
-    if (t == &s->hw_muted)
-        if (s->set_hw_mute(s) < 0)
-            s->sw_muted = !!mute;
+    if (s->set_mute && s->set_mute(s) < 0)
+        s->set_mute = NULL;
 
-    pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
+    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);
 }
 
-int pa_source_get_mute(pa_source *s, pa_mixer_t m) {
-    assert(s);
-    assert(s->ref >= 1);
+/* Called from main thread */
+pa_bool_t pa_source_get_mute(pa_source *s, pa_bool_t force_refresh) {
 
-    if (m == PA_MIXER_HARDWARE && s->set_hw_mute) {
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
 
-        if (s->get_hw_mute)
-            s->get_hw_mute(s);
-        
-        return s->hw_muted;
-    } else
-        return s->sw_muted;
+    if (s->refresh_muted || force_refresh) {
+        pa_bool_t old_muted = s->muted;
+
+        if (s->get_mute && s->get_mute(s) < 0)
+            s->get_mute = NULL;
+
+        if (!s->get_mute)
+            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;
 }
 
+/* Called from main thread */
 void pa_source_set_description(pa_source *s, const char *description) {
-    assert(s);
-    assert(s->ref >= 1);
+    const char *old;
+    pa_source_assert_ref(s);
 
-    if (!description && !s->description)
+    if (!description && !pa_proplist_contains(s->proplist, PA_PROP_DEVICE_DESCRIPTION))
         return;
 
-    if (description && s->description && !strcmp(description, s->description))
+    old = pa_proplist_gets(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
+
+    if (old && description && !strcmp(old, description))
         return;
-    
-    pa_xfree(s->description);
-    s->description = pa_xstrdup(description);
 
-    pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
+    if (description)
+        pa_proplist_sets(s->proplist, PA_PROP_DEVICE_DESCRIPTION, description);
+    else
+        pa_proplist_unset(s->proplist, PA_PROP_DEVICE_DESCRIPTION);
+
+    if (PA_SOURCE_IS_LINKED(s->state)) {
+        pa_subscription_post(s->core, PA_SUBSCRIPTION_EVENT_SOURCE|PA_SUBSCRIPTION_EVENT_CHANGE, s->index);
+        pa_hook_fire(&s->core->hooks[PA_CORE_HOOK_SOURCE_PROPLIST_CHANGED], s);
+    }
+}
+
+/* Called from main thread */
+unsigned pa_source_linked_by(pa_source *s) {
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
+
+    return pa_idxset_size(s->outputs);
+}
+
+/* Called from main thread */
+unsigned pa_source_used_by(pa_source *s) {
+    unsigned ret;
+
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
+
+    ret = pa_idxset_size(s->outputs);
+    pa_assert(ret >= s->n_corked);
+
+    return ret - s->n_corked;
+}
+
+/* Called from IO thread, except when it is not */
+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);
+
+    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));
+
+            if (o->direct_on_input) {
+                o->thread_info.direct_on_input = o->direct_on_input;
+                pa_hashmap_put(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index), o);
+            }
+
+            pa_assert(!o->thread_info.attached);
+            o->thread_info.attached = TRUE;
+
+            if (o->attach)
+                o->attach(o);
+
+            pa_source_output_set_state_within_thread(o, o->state);
+
+            if (o->thread_info.requested_source_latency != (pa_usec_t) -1)
+                pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
+
+            pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
+
+            /* We don't just invalidate the requested latency here,
+             * because if we are in a move we might need to fix up the
+             * requested latency. */
+            pa_source_output_set_requested_latency_within_thread(o, o->thread_info.requested_source_latency);
+
+            return 0;
+        }
+
+        case PA_SOURCE_MESSAGE_REMOVE_OUTPUT: {
+            pa_source_output *o = PA_SOURCE_OUTPUT(userdata);
+
+            pa_source_output_set_state_within_thread(o, o->state);
+
+            if (o->detach)
+                o->detach(o);
+
+            pa_assert(o->thread_info.attached);
+            o->thread_info.attached = FALSE;
+
+            if (o->thread_info.direct_on_input) {
+                pa_hashmap_remove(o->thread_info.direct_on_input->thread_info.direct_outputs, PA_UINT32_TO_PTR(o->index));
+                o->thread_info.direct_on_input = NULL;
+            }
+
+            if (pa_hashmap_remove(s->thread_info.outputs, PA_UINT32_TO_PTR(o->index)))
+                pa_source_output_unref(o);
+
+            pa_source_invalidate_requested_latency(s);
+
+            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_SET_STATE:
+            s->thread_info.state = PA_PTR_TO_UINT(userdata);
+            return 0;
+
+        case PA_SOURCE_MESSAGE_DETACH:
+
+            /* Detach all streams */
+            pa_source_detach_within_thread(s);
+            return 0;
+
+        case PA_SOURCE_MESSAGE_ATTACH:
+
+            /* Reattach all streams */
+            pa_source_attach_within_thread(s);
+            return 0;
+
+        case PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY: {
+
+            pa_usec_t *usec = userdata;
+            *usec = pa_source_get_requested_latency_within_thread(s);
+
+            if (*usec == (pa_usec_t) -1)
+                *usec = s->thread_info.max_latency;
+
+            return 0;
+        }
+
+        case PA_SOURCE_MESSAGE_SET_LATENCY_RANGE: {
+            pa_usec_t *r = userdata;
+
+            pa_source_update_latency_range(s, r[0], r[1]);
+
+            return 0;
+        }
+
+        case PA_SOURCE_MESSAGE_GET_LATENCY_RANGE: {
+            pa_usec_t *r = userdata;
+
+            r[0] = s->thread_info.min_latency;
+            r[1] = s->thread_info.max_latency;
+
+            return 0;
+        }
+
+        case PA_SOURCE_MESSAGE_GET_MAX_REWIND:
+
+            *((size_t*) userdata) = s->thread_info.max_rewind;
+            return 0;
+
+        case PA_SOURCE_MESSAGE_GET_LATENCY:
+
+            if (s->monitor_of) {
+                *((pa_usec_t*) userdata) = 0;
+                return 0;
+            }
+
+            /* Implementors need to overwrite this implementation! */
+            return -1;
+
+        case PA_SOURCE_MESSAGE_MAX:
+            ;
+    }
+
+    return -1;
+}
+
+/* Called from main thread */
+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;
+}
+
+/* Called from main thread */
+void pa_source_detach(pa_source *s) {
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
+
+    pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_DETACH, NULL, 0, NULL) == 0);
+}
+
+/* Called from main thread */
+void pa_source_attach(pa_source *s) {
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
+
+    pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_ATTACH, NULL, 0, NULL) == 0);
+}
+
+/* Called from IO thread */
+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_IS_LINKED(s->thread_info.state));
+
+    while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
+        if (o->detach)
+            o->detach(o);
+}
+
+/* Called from IO thread */
+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_IS_LINKED(s->thread_info.state));
+
+    while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
+        if (o->attach)
+            o->attach(o);
+}
+
+/* Called from IO thread */
+pa_usec_t pa_source_get_requested_latency_within_thread(pa_source *s) {
+    pa_usec_t result = (pa_usec_t) -1;
+    pa_source_output *o;
+    void *state = NULL;
+
+    pa_source_assert_ref(s);
+
+    if (s->thread_info.requested_latency_valid)
+        return s->thread_info.requested_latency;
+
+    while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
+
+        if (o->thread_info.requested_source_latency != (pa_usec_t) -1 &&
+            (result == (pa_usec_t) -1 || result > o->thread_info.requested_source_latency))
+            result = o->thread_info.requested_source_latency;
+
+    if (result != (pa_usec_t) -1) {
+        if (s->thread_info.max_latency > 0 && result > s->thread_info.max_latency)
+            result = s->thread_info.max_latency;
+
+        if (s->thread_info.min_latency > 0 && result < s->thread_info.min_latency)
+            result = s->thread_info.min_latency;
+    }
+
+    s->thread_info.requested_latency = result;
+    s->thread_info.requested_latency_valid = TRUE;
+
+    return result;
+}
+
+/* Called from main thread */
+pa_usec_t pa_source_get_requested_latency(pa_source *s) {
+    pa_usec_t usec;
+
+    pa_source_assert_ref(s);
+    pa_assert(PA_SOURCE_IS_LINKED(s->state));
+
+    if (!PA_SOURCE_IS_OPENED(s->state))
+        return 0;
+
+    pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_REQUESTED_LATENCY, &usec, 0, NULL) == 0);
+
+    return usec;
+}
+
+/* Called from IO thread */
+void pa_source_set_max_rewind(pa_source *s, size_t max_rewind) {
+    pa_source_output *o;
+    void *state = NULL;
+
+    pa_source_assert_ref(s);
+
+    if (max_rewind == s->thread_info.max_rewind)
+        return;
+
+    s->thread_info.max_rewind = max_rewind;
+
+    if (PA_SOURCE_IS_LINKED(s->thread_info.state)) {
+        while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
+            pa_source_output_update_max_rewind(o, s->thread_info.max_rewind);
+    }
+}
+
+void pa_source_invalidate_requested_latency(pa_source *s) {
+    pa_source_output *o;
+    void *state = NULL;
+
+    pa_source_assert_ref(s);
+
+    s->thread_info.requested_latency_valid = FALSE;
+
+    if (s->update_requested_latency)
+        s->update_requested_latency(s);
+
+    while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
+        if (o->update_source_requested_latency)
+            o->update_source_requested_latency(o);
+
+    if (s->monitor_of)
+        pa_sink_invalidate_requested_latency(s->monitor_of);
+}
+
+void pa_source_set_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
+    pa_source_assert_ref(s);
+
+    /* min_latency == 0:           no limit
+     * min_latency == (size_t) -1: default limit
+     * min_latency anything else:  specified limit
+     *
+     * Similar for max_latency */
+
+    if (min_latency == (pa_usec_t) -1)
+        min_latency = DEFAULT_MIN_LATENCY;
+
+    if (max_latency == (pa_usec_t) -1)
+        max_latency = min_latency;
+
+    pa_assert(!min_latency || !max_latency ||
+              min_latency <= max_latency);
+
+    if (PA_SOURCE_IS_LINKED(s->state)) {
+        pa_usec_t r[2];
+
+        r[0] = min_latency;
+        r[1] = max_latency;
+
+        pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_SET_LATENCY_RANGE, r, 0, NULL) == 0);
+    } else {
+        s->thread_info.min_latency = min_latency;
+        s->thread_info.max_latency = max_latency;
+
+        s->thread_info.requested_latency_valid = FALSE;
+    }
+}
+
+void pa_source_get_latency_range(pa_source *s, pa_usec_t *min_latency, pa_usec_t *max_latency) {
+   pa_source_assert_ref(s);
+   pa_assert(min_latency);
+   pa_assert(max_latency);
+
+   if (PA_SOURCE_IS_LINKED(s->state)) {
+       pa_usec_t r[2] = { 0, 0 };
+
+       pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_LATENCY_RANGE, r, 0, NULL) == 0);
+
+       *min_latency = r[0];
+       *max_latency = r[1];
+   } else {
+       *min_latency = s->thread_info.min_latency;
+       *max_latency = s->thread_info.max_latency;
+   }
+}
+
+/* Called from IO thread */
+void pa_source_update_latency_range(pa_source *s, pa_usec_t min_latency, pa_usec_t max_latency) {
+    pa_source_output *o;
+    void *state = NULL;
+
+    pa_source_assert_ref(s);
+
+    s->thread_info.min_latency = min_latency;
+    s->thread_info.max_latency = max_latency;
+
+    while ((o = pa_hashmap_iterate(s->thread_info.outputs, &state, NULL)))
+        if (o->update_source_latency_range)
+            o->update_source_latency_range(o);
+
+    pa_source_invalidate_requested_latency(s);
+}
+
+size_t pa_source_get_max_rewind(pa_source *s) {
+    size_t r;
+    pa_source_assert_ref(s);
+
+    if (!PA_SOURCE_IS_LINKED(s->state))
+        return s->thread_info.max_rewind;
+
+    pa_assert_se(pa_asyncmsgq_send(s->asyncmsgq, PA_MSGOBJECT(s), PA_SOURCE_MESSAGE_GET_MAX_REWIND, &r, 0, NULL) == 0);
+
+    return r;
 }