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virtual source: Factor out common code

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Analog to the virtual sink consolidation series, the common code of virtual sources
is moved to a library. The library adds support for fixed block size filters and
parameter changing. Rewinding has been dropped because virtual sources do not need
it.
This commit is contained in:
Georg Chini 2021-01-31 17:02:57 +01:00
parent b6ccb7e76d
commit 0b26ed9b0c
4 changed files with 1302 additions and 467 deletions
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13
src/modules/meson.build
View file

@ -13,6 +13,17 @@ libvirtual_sink = shared_library('virtual_sink',
install_dir : modlibexecdir
)
libvirtual_source = shared_library('virtual_source',
'virtual-source-common.c',
'virtual-source-common.h',
c_args : [pa_c_args, server_c_args],
include_directories : [configinc, topinc],
dependencies : [libpulse_dep, libpulsecommon_dep, libpulsecore_dep],
install_rpath : privlibdir,
install : true,
install_dir : modlibexecdir
)
# module name, sources, [headers, extra flags, extra deps, extra libs]
all_modules = [
[ 'module-allow-passthrough', 'module-allow-passthrough.c' ],
@ -67,7 +78,7 @@ all_modules = [
[ 'module-tunnel-source', ['module-tunnel.c', 'restart-module.c'], [], [], [x11_dep] ],
[ 'module-tunnel-source-new', ['module-tunnel-source-new.c', 'restart-module.c'] ],
[ 'module-virtual-sink', 'module-virtual-sink.c', [], [], [], libvirtual_sink ],
[ 'module-virtual-source', 'module-virtual-source.c' ],
[ 'module-virtual-source', 'module-virtual-source.c', [], [], [], libvirtual_source ],
[ 'module-volume-restore', 'module-volume-restore.c' ],
]

575
src/modules/module-virtual-source.c
View file

@ -26,6 +26,8 @@
#include <pulse/xmalloc.h>
#include <modules/virtual-source-common.h>
#include <pulsecore/i18n.h>
#include <pulsecore/macro.h>
#include <pulsecore/namereg.h>
@ -63,15 +65,7 @@ PA_MODULE_USAGE(
struct userdata {
pa_module *module;
/* FIXME: Uncomment this and take "autoloaded" as a modarg if this is a filter */
/* bool autoloaded; */
pa_source *source;
pa_source_output *source_output;
pa_memblockq *memblockq;
bool auto_desc;
pa_vsource *vsource;
unsigned channels;
/* optional fields for uplink sink */
@ -79,6 +73,7 @@ struct userdata {
pa_usec_t block_usec;
pa_memblockq *sink_memblockq;
pa_rtpoll *rtpoll;
bool auto_desc;
};
@ -96,6 +91,97 @@ static const char* const valid_modargs[] = {
NULL
};
static void filter_process_chunk(uint8_t *src, uint8_t *dst, unsigned in_count, unsigned out_count, void *userdata) {
struct userdata *u;
size_t nbytes;
pa_assert_se(u = userdata);
pa_assert(in_count == out_count);
nbytes = in_count * pa_frame_size(&u->vsource->source->sample_spec);
/* if uplink sink exists, pull data from there; simplify by using
same length as chunk provided by source */
if (u->sink && (u->sink->thread_info.state == PA_SINK_RUNNING)) {
pa_memchunk tchunk;
pa_mix_info streams[2];
pa_memchunk chunk;
void *src_copy;
int ch;
pa_source_output *o;
/* Hmm, process any rewind request that might be queued up */
pa_sink_process_rewind(u->sink, 0);
/* get data from the sink */
while (pa_memblockq_peek(u->sink_memblockq, &tchunk) < 0) {
pa_memchunk nchunk;
/* make sure we get nbytes from the sink with render_full,
otherwise we cannot mix with the uplink */
pa_sink_render_full(u->sink, nbytes, &nchunk);
pa_memblockq_push(u->sink_memblockq, &nchunk);
pa_memblock_unref(nchunk.memblock);
}
pa_assert(tchunk.length == nbytes);
/* move the read pointer for sink memblockq */
pa_memblockq_drop(u->sink_memblockq, tchunk.length);
o = u->vsource->output_from_master;
/* allocate source chunk */
chunk.index = 0;
chunk.length = nbytes;
chunk.memblock = pa_memblock_new(o->source->core->mempool, nbytes);
pa_assert(chunk.memblock);
/* Copy source data to chunk */
src_copy = pa_memblock_acquire_chunk(&chunk);
memcpy(src_copy, src, nbytes);
/* set-up mixing structure
volume was taken care of in sink and source already */
streams[0].chunk = chunk;
for(ch=0;ch<o->sample_spec.channels;ch++)
streams[0].volume.values[ch] = PA_VOLUME_NORM; /* FIXME */
streams[0].volume.channels = o->sample_spec.channels;
streams[1].chunk = tchunk;
for(ch=0;ch<o->sample_spec.channels;ch++)
streams[1].volume.values[ch] = PA_VOLUME_NORM; /* FIXME */
streams[1].volume.channels = o->sample_spec.channels;
/* do mixing */
pa_mix(streams, /* 2 streams to be mixed */
2,
dst, /* put result in dst */
nbytes, /* same length as input */
(const pa_sample_spec *)&o->sample_spec, /* same sample spec for input and output */
NULL, /* no volume information */
false); /* no mute */
pa_memblock_release(chunk.memblock);
pa_memblock_unref(tchunk.memblock);
pa_memblock_unref(chunk.memblock);
} else
/* Copy input to output */
memcpy(dst, src, nbytes);
}
/* When the source output moves, the asyncmsgq of the uplink sink has
* to change as well */
static void source_output_moving_cb(pa_source_output *o, pa_source *dest) {
struct userdata *u;
pa_assert(u = o->userdata);
pa_virtual_source_output_moving(o, dest);
if (dest && u->sink) {
pa_sink_set_asyncmsgq(u->sink, dest->asyncmsgq);
}
}
/* Called from I/O thread context */
static int sink_process_msg_cb(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
@ -125,8 +211,8 @@ static int sink_set_state_in_main_thread_cb(pa_sink *s, pa_sink_state_t state, p
if (state == PA_SINK_RUNNING) {
/* need to wake-up source if it was suspended */
pa_log_debug("Resuming source %s, because its uplink sink became active.", u->source->name);
pa_source_suspend(u->source, false, PA_SUSPEND_ALL);
pa_log_debug("Resuming source %s, because its uplink sink became active.", u->vsource->source->name);
pa_source_suspend(u->vsource->source, false, PA_SUSPEND_ALL);
/* FIXME: if there's no client connected, the source will suspend
and playback will be stuck. You'd want to prevent the source from
@ -151,347 +237,13 @@ static void sink_update_requested_latency_cb(pa_sink *s) {
}
/* Called from I/O thread context */
static int source_process_msg_cb(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk) {
struct userdata *u = PA_SOURCE(o)->userdata;
switch (code) {
case PA_SOURCE_MESSAGE_GET_LATENCY:
/* The source is _put() before the source output is, so let's
* make sure we don't access it in that time. Also, the
* source output is first shut down, the source second. */
if (!PA_SOURCE_IS_LINKED(u->source->thread_info.state) ||
!PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->thread_info.state)) {
*((pa_usec_t*) data) = 0;
return 0;
}
*((pa_usec_t*) data) =
/* Get the latency of the master source */
pa_source_get_latency_within_thread(u->source_output->source, true) +
/* Add the latency internal to our source output on top */
/* FIXME, no idea what I am doing here */
pa_bytes_to_usec(pa_memblockq_get_length(u->source_output->thread_info.delay_memblockq), &u->source_output->source->sample_spec);
/* Add resampler delay */
*((int64_t*) data) += pa_resampler_get_delay_usec(u->source_output->thread_info.resampler);
return 0;
}
return pa_source_process_msg(o, code, data, offset, chunk);
}
/* Called from main context */
static int source_set_state_in_main_thread_cb(pa_source *s, pa_source_state_t state, pa_suspend_cause_t suspend_cause) {
struct userdata *u;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SOURCE_IS_LINKED(state) ||
!PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->state))
return 0;
pa_source_output_cork(u->source_output, state == PA_SOURCE_SUSPENDED);
return 0;
}
/* Called from I/O thread context */
static void source_update_requested_latency_cb(pa_source *s) {
struct userdata *u;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SOURCE_IS_LINKED(u->source->thread_info.state) ||
!PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->thread_info.state))
return;
/* Just hand this one over to the master source */
pa_source_output_set_requested_latency_within_thread(
u->source_output,
pa_source_get_requested_latency_within_thread(s));
}
/* Called from main context */
static void source_set_volume_cb(pa_source *s) {
struct userdata *u;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SOURCE_IS_LINKED(s->state) ||
!PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->state))
return;
pa_source_output_set_volume(u->source_output, &s->real_volume, s->save_volume, true);
}
/* Called from main context */
static void source_set_mute_cb(pa_source *s) {
struct userdata *u;
pa_source_assert_ref(s);
pa_assert_se(u = s->userdata);
if (!PA_SOURCE_IS_LINKED(s->state) ||
!PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->state))
return;
pa_source_output_set_mute(u->source_output, s->muted, s->save_muted);
}
/* Called from input thread context */
static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
if (!PA_SOURCE_IS_LINKED(u->source->thread_info.state))
return;
if (!PA_SOURCE_OUTPUT_IS_LINKED(u->source_output->thread_info.state)) {
pa_log("push when no link?");
return;
}
/* PUT YOUR CODE HERE TO DO SOMETHING WITH THE SOURCE DATA */
/* if uplink sink exists, pull data from there; simplify by using
same length as chunk provided by source */
if (u->sink && (u->sink->thread_info.state == PA_SINK_RUNNING)) {
pa_memchunk tchunk;
size_t nbytes = chunk->length;
pa_mix_info streams[2];
pa_memchunk target_chunk;
void *target;
int ch;
/* Hmm, process any rewind request that might be queued up */
pa_sink_process_rewind(u->sink, 0);
/* get data from the sink */
while (pa_memblockq_peek(u->sink_memblockq, &tchunk) < 0) {
pa_memchunk nchunk;
/* make sure we get nbytes from the sink with render_full,
otherwise we cannot mix with the uplink */
pa_sink_render_full(u->sink, nbytes, &nchunk);
pa_memblockq_push(u->sink_memblockq, &nchunk);
pa_memblock_unref(nchunk.memblock);
}
pa_assert(tchunk.length == chunk->length);
/* move the read pointer for sink memblockq */
pa_memblockq_drop(u->sink_memblockq, tchunk.length);
/* allocate target chunk */
/* this could probably be done in-place, but having chunk as both
the input and output creates issues with reference counts */
target_chunk.index = 0;
target_chunk.length = chunk->length;
pa_assert(target_chunk.length == chunk->length);
target_chunk.memblock = pa_memblock_new(o->source->core->mempool,
target_chunk.length);
pa_assert( target_chunk.memblock );
/* get target pointer */
target = pa_memblock_acquire_chunk(&target_chunk);
/* set-up mixing structure
volume was taken care of in sink and source already */
streams[0].chunk = *chunk;
for(ch=0;ch<o->sample_spec.channels;ch++)
streams[0].volume.values[ch] = PA_VOLUME_NORM; /* FIXME */
streams[0].volume.channels = o->sample_spec.channels;
streams[1].chunk = tchunk;
for(ch=0;ch<o->sample_spec.channels;ch++)
streams[1].volume.values[ch] = PA_VOLUME_NORM; /* FIXME */
streams[1].volume.channels = o->sample_spec.channels;
/* do mixing */
pa_mix(streams, /* 2 streams to be mixed */
2,
target, /* put result in target chunk */
chunk->length, /* same length as input */
(const pa_sample_spec *)&o->sample_spec, /* same sample spec for input and output */
NULL, /* no volume information */
false); /* no mute */
pa_memblock_release(target_chunk.memblock);
pa_memblock_unref(tchunk.memblock); /* clean-up */
/* forward the data to the virtual source */
pa_source_post(u->source, &target_chunk);
pa_memblock_unref(target_chunk.memblock); /* clean-up */
} else {
/* forward the data to the virtual source */
pa_source_post(u->source, chunk);
}
}
/* Called from input thread context */
static void source_output_process_rewind_cb(pa_source_output *o, size_t nbytes) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
/* If the source is not yet linked, there is nothing to rewind */
if (PA_SOURCE_IS_LINKED(u->source->thread_info.state))
pa_source_process_rewind(u->source, nbytes);
/* FIXME, no idea what I am doing here */
#if 0
pa_asyncmsgq_post(u->asyncmsgq, PA_MSGOBJECT(u->sink_input), SINK_INPUT_MESSAGE_REWIND, NULL, (int64_t) nbytes, NULL, NULL);
u->send_counter -= (int64_t) nbytes;
#endif
}
/* Called from output thread context */
static void source_output_update_max_rewind_cb(pa_source_output *o, size_t nbytes) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
pa_source_set_max_rewind_within_thread(u->source, nbytes);
}
/* Called from output thread context */
static void source_output_attach_cb(pa_source_output *o) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
pa_source_set_rtpoll(u->source, o->source->thread_info.rtpoll);
pa_source_set_latency_range_within_thread(u->source, o->source->thread_info.min_latency, o->source->thread_info.max_latency);
pa_source_set_fixed_latency_within_thread(u->source, o->source->thread_info.fixed_latency);
pa_source_set_max_rewind_within_thread(u->source, pa_source_output_get_max_rewind(o));
if (PA_SOURCE_IS_LINKED(u->source->thread_info.state))
pa_source_attach_within_thread(u->source);
}
/* Called from output thread context */
static void source_output_detach_cb(pa_source_output *o) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_source_output_assert_io_context(o);
pa_assert_se(u = o->userdata);
if (PA_SOURCE_IS_LINKED(u->source->thread_info.state))
pa_source_detach_within_thread(u->source);
pa_source_set_rtpoll(u->source, NULL);
}
/* Called from output thread context except when cork() is called without valid source.*/
static void source_output_state_change_cb(pa_source_output *o, pa_source_output_state_t state) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_assert_se(u = o->userdata);
/* FIXME */
#if 0
if (PA_SOURCE_OUTPUT_IS_LINKED(state) && o->thread_info.state == PA_SOURCE_OUTPUT_INIT && o->source) {
u->skip = pa_usec_to_bytes(PA_CLIP_SUB(pa_source_get_latency_within_thread(o->source, false),
u->latency),
&o->sample_spec);
pa_log_info("Skipping %lu bytes", (unsigned long) u->skip);
}
#endif
}
/* Called from main thread */
static void source_output_kill_cb(pa_source_output *o) {
struct userdata *u;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert_se(u = o->userdata);
/* The order here matters! We first kill the source so that streams
* can properly be moved away while the source output is still connected
* to the master. */
pa_source_output_cork(u->source_output, true);
pa_source_unlink(u->source);
pa_source_output_unlink(u->source_output);
pa_source_output_unref(u->source_output);
u->source_output = NULL;
pa_source_unref(u->source);
u->source = NULL;
pa_module_unload_request(u->module, true);
}
/* Called from main thread */
static void source_output_moving_cb(pa_source_output *o, pa_source *dest) {
struct userdata *u;
uint32_t idx;
pa_source_output *output;
pa_source_output_assert_ref(o);
pa_assert_ctl_context();
pa_assert_se(u = o->userdata);
if (dest) {
pa_source_set_asyncmsgq(u->source, dest->asyncmsgq);
pa_source_update_flags(u->source, PA_SOURCE_LATENCY|PA_SOURCE_DYNAMIC_LATENCY, dest->flags);
} else
pa_source_set_asyncmsgq(u->source, NULL);
/* Propagate asyncmsq change to attached virtual sources */
PA_IDXSET_FOREACH(output, u->source->outputs, idx) {
if (output->destination_source && output->moving)
output->moving(output, u->source);
}
if (u->auto_desc && dest) {
const char *z;
pa_proplist *pl;
pl = pa_proplist_new();
z = pa_proplist_gets(dest->proplist, PA_PROP_DEVICE_DESCRIPTION);
pa_proplist_setf(pl, PA_PROP_DEVICE_DESCRIPTION, "Virtual Source %s on %s",
pa_proplist_gets(u->source->proplist, "device.vsource.name"), z ? z : dest->name);
pa_source_update_proplist(u->source, PA_UPDATE_REPLACE, pl);
pa_proplist_free(pl);
}
}
int pa__init(pa_module*m) {
struct userdata *u;
pa_sample_spec ss;
pa_channel_map map;
pa_modargs *ma;
pa_source *master=NULL;
pa_source_output_new_data source_output_data;
pa_source_new_data source_data;
bool use_volume_sharing = true;
bool force_flat_volume = false;
/* optional for uplink_sink */
pa_sink_new_data sink_data;
@ -512,7 +264,6 @@ int pa__init(pa_module*m) {
pa_assert(master);
ss = master->sample_spec;
ss.format = PA_SAMPLE_FLOAT32;
map = master->channel_map;
if (pa_modargs_get_sample_spec_and_channel_map(ma, &ss, &map, PA_CHANNEL_MAP_DEFAULT) < 0) {
pa_log("Invalid sample format specification or channel map");
@ -524,24 +275,9 @@ int pa__init(pa_module*m) {
goto fail;
}
if (pa_modargs_get_value_boolean(ma, "force_flat_volume", &force_flat_volume) < 0) {
pa_log("force_flat_volume= expects a boolean argument");
goto fail;
}
if (use_volume_sharing && force_flat_volume) {
pa_log("Flat volume can't be forced when using volume sharing.");
goto fail;
}
u = pa_xnew0(struct userdata, 1);
u->module = m;
m->userdata = u;
u->memblockq = pa_memblockq_new("module-virtual-source memblockq", 0, MEMBLOCKQ_MAXLENGTH, 0, &ss, 1, 1, 0, NULL);
if (!u->memblockq) {
pa_log("Failed to create source memblockq.");
goto fail;
}
u->channels = ss.channels;
/* The rtpoll created here is never run. It is only necessary to avoid crashes
@ -551,93 +287,14 @@ int pa__init(pa_module*m) {
* call pa_asyncmsq_process_one() themselves. */
u->rtpoll = pa_rtpoll_new();
/* Create source */
pa_source_new_data_init(&source_data);
source_data.driver = __FILE__;
source_data.module = m;
if (!(source_data.name = pa_xstrdup(pa_modargs_get_value(ma, "source_name", NULL))))
source_data.name = pa_sprintf_malloc("%s.vsource", master->name);
pa_source_new_data_set_sample_spec(&source_data, &ss);
pa_source_new_data_set_channel_map(&source_data, &map);
pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, master->name);
pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_CLASS, "filter");
pa_proplist_sets(source_data.proplist, "device.vsource.name", source_data.name);
if (pa_modargs_get_proplist(ma, "source_properties", source_data.proplist, PA_UPDATE_REPLACE) < 0) {
pa_log("Invalid properties");
pa_source_new_data_done(&source_data);
goto fail;
}
if ((u->auto_desc = !pa_proplist_contains(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION))) {
const char *z;
z = pa_proplist_gets(master->proplist, PA_PROP_DEVICE_DESCRIPTION);
pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "Virtual Source %s on %s", source_data.name, z ? z : master->name);
}
u->source = pa_source_new(m->core, &source_data, (master->flags & (PA_SOURCE_LATENCY|PA_SOURCE_DYNAMIC_LATENCY))
| (use_volume_sharing ? PA_SOURCE_SHARE_VOLUME_WITH_MASTER : 0));
pa_source_new_data_done(&source_data);
if (!u->source) {
pa_log("Failed to create source.");
goto fail;
}
u->source->parent.process_msg = source_process_msg_cb;
u->source->set_state_in_main_thread = source_set_state_in_main_thread_cb;
u->source->update_requested_latency = source_update_requested_latency_cb;
pa_source_set_set_mute_callback(u->source, source_set_mute_cb);
if (!use_volume_sharing) {
pa_source_set_set_volume_callback(u->source, source_set_volume_cb);
pa_source_enable_decibel_volume(u->source, true);
}
/* Normally this flag would be enabled automatically be we can force it. */
if (force_flat_volume)
u->source->flags |= PA_SOURCE_FLAT_VOLUME;
u->source->userdata = u;
pa_source_set_asyncmsgq(u->source, master->asyncmsgq);
/* Create source output */
pa_source_output_new_data_init(&source_output_data);
source_output_data.driver = __FILE__;
source_output_data.module = m;
pa_source_output_new_data_set_source(&source_output_data, master, false, true);
source_output_data.destination_source = u->source;
pa_proplist_setf(source_output_data.proplist, PA_PROP_MEDIA_NAME, "Virtual Source Stream of %s", pa_proplist_gets(u->source->proplist, PA_PROP_DEVICE_DESCRIPTION));
pa_proplist_sets(source_output_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
pa_source_output_new_data_set_sample_spec(&source_output_data, &ss);
pa_source_output_new_data_set_channel_map(&source_output_data, &map);
source_output_data.flags |= PA_SOURCE_OUTPUT_START_CORKED;
pa_source_output_new(&u->source_output, m->core, &source_output_data);
pa_source_output_new_data_done(&source_output_data);
if (!u->source_output)
/* Create virtual source */
if (!(u->vsource = pa_virtual_source_create(master, "vsource", "Virtual Source", &ss, &map,
&ss, &map, m, u, ma, use_volume_sharing, true)))
goto fail;
u->source_output->push = source_output_push_cb;
u->source_output->process_rewind = source_output_process_rewind_cb;
u->source_output->update_max_rewind = source_output_update_max_rewind_cb;
u->source_output->kill = source_output_kill_cb;
u->source_output->attach = source_output_attach_cb;
u->source_output->detach = source_output_detach_cb;
u->source_output->state_change = source_output_state_change_cb;
u->source_output->moving = source_output_moving_cb;
u->source_output->userdata = u;
u->source->output_from_master = u->source_output;
/* The order here is important. The output must be put first,
* otherwise streams might attach to the source before the
* source output is attached to the master. */
pa_source_output_put(u->source_output);
pa_source_put(u->source);
pa_source_output_cork(u->source_output, false);
/* Set callback for virtual source */
u->vsource->process_chunk = filter_process_chunk;
u->vsource->output_from_master->moving = source_output_moving_cb;
/* Create optional uplink sink */
pa_sink_new_data_init(&sink_data);
@ -693,6 +350,9 @@ int pa__init(pa_module*m) {
u->sink = NULL;
}
if (pa_virtual_source_activate(u->vsource) < 0)
goto fail;
pa_modargs_free(ma);
return 0;
@ -712,7 +372,7 @@ int pa__get_n_used(pa_module *m) {
pa_assert(m);
pa_assert_se(u = m->userdata);
return pa_source_linked_by(u->source);
return pa_source_linked_by(u->vsource->source);
}
void pa__done(pa_module*m) {
@ -723,31 +383,14 @@ void pa__done(pa_module*m) {
if (!(u = m->userdata))
return;
/* See comments in source_output_kill_cb() above regarding
* destruction order! */
if (u->source_output)
pa_source_output_cork(u->source_output, true);
if (u->source)
pa_source_unlink(u->source);
if (u->source_output) {
pa_source_output_unlink(u->source_output);
pa_source_output_unref(u->source_output);
}
if (u->source)
pa_source_unref(u->source);
if (u->vsource)
pa_virtual_source_destroy(u->vsource);
if (u->sink) {
pa_sink_unlink(u->sink);
pa_sink_unref(u->sink);
}
if (u->memblockq)
pa_memblockq_free(u->memblockq);
if (u->sink_memblockq)
pa_memblockq_free(u->sink_memblockq);

1110
src/modules/virtual-source-common.c Normal file
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File diff suppressed because it is too large Load diff

71
src/modules/virtual-source-common.h Normal file
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@ -0,0 +1,71 @@
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License,
or (at your option) any later version.
PulseAudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#include <pulsecore/source.h>
#include <pulsecore/modargs.h>
/* Callbacks for virtual sources. */
int pa_virtual_source_process_msg(pa_msgobject *o, int code, void *data, int64_t offset, pa_memchunk *chunk);
int pa_virtual_source_set_state_in_main_thread(pa_source *s, pa_source_state_t state, pa_suspend_cause_t suspend_cause);
int pa_virtual_source_set_state_in_io_thread(pa_source *s, pa_source_state_t new_state, pa_suspend_cause_t new_suspend_cause);
void pa_virtual_source_update_requested_latency(pa_source *s);
void pa_virtual_source_set_volume(pa_source *s);
void pa_virtual_source_set_mute(pa_source *s);
void pa_virtual_source_output_push(pa_source_output *o, const pa_memchunk *chunk);
void pa_virtual_source_output_update_source_latency_range(pa_source_output *o);
void pa_virtual_source_output_update_source_fixed_latency(pa_source_output *o);
void pa_virtual_source_output_process_rewind(pa_source_output *o, size_t nbytes);
void pa_virtual_source_output_update_max_rewind(pa_source_output *o, size_t nbytes);
void pa_virtual_source_output_detach(pa_source_output *o);
void pa_virtual_source_output_attach(pa_source_output *o);
void pa_virtual_source_output_kill(pa_source_output *o);
void pa_virtual_source_output_moving(pa_source_output *o, pa_source *dest);
bool pa_virtual_source_output_may_move_to(pa_source_output *o, pa_source *dest);
void pa_virtual_source_output_volume_changed(pa_source_output *o);
void pa_virtual_source_output_mute_changed(pa_source_output *o);
void pa_virtual_source_output_suspend(pa_source_output *o, pa_source_state_t old_state, pa_suspend_cause_t old_suspend_cause);
/* Set callbacks for virtual source and source output. */
void pa_virtual_source_set_callbacks(pa_source *s, bool use_volume_sharing);
void pa_virtual_source_output_set_callbacks(pa_source_output *o, bool use_volume_sharing);
/* Create a new virtual source. Returns a filled vsource structure or NULL on failure. */
pa_vsource *pa_virtual_source_create(pa_source *master, const char *source_type, const char *desc_prefix,
pa_sample_spec *source_ss, pa_channel_map *source_map,
pa_sample_spec *source_output_ss, pa_channel_map *source_output_map,
pa_module *m, void *userdata, pa_modargs *ma,
bool use_volume_sharing, bool create_memblockq);
/* Activate the new virtual source. */
int pa_virtual_source_activate(pa_vsource *vs);
/* Destroys the objects associated with the virtual source. */
void pa_virtual_source_destroy(pa_vsource *vs);
/* Create vsource structure */
pa_vsource* pa_virtual_source_vsource_new(pa_source *s);
/* Update filter parameters */
void pa_virtual_source_request_parameter_update(pa_vsource *vs, void *parameters);