[pulseaudio-discuss] [PATCH] Implement Fortemedia SMA processing.
Alban Browaeys
prahal at yahoo.com
Wed Jan 5 16:32:00 PST 2011
>From 853a4d96bf2624ef30f86cf4819382949d039c87 Mon Sep 17 00:00:00 2001
From: Alban Browaeys <prahal at yahoo.com>
Date: Wed, 5 Jan 2011 17:13:04 +0100
Subject: [PATCH] Implement Fortemedia SMA processing.
Those small array microphones returns two channels of opposite
phase thus the default remap in pulseaudio doing the sum output
silence.
Signed-off-by: Alban Browaeys <prahal at yahoo.com>
---
src/Makefile.am | 10 +-
src/modules/module-fmaudiosma.c | 692 +++++++++++++++++++++++++++++++++++++++
2 files changed, 700 insertions(+), 2 deletions(-)
create mode 100644 src/modules/module-fmaudiosma.c
diff --git a/src/Makefile.am b/src/Makefile.am
index 15a4644..755b01d 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1036,7 +1036,8 @@ modlibexec_LTLIBRARIES += \
module-cork-music-on-phone.la \
module-loopback.la \
module-virtual-sink.la \
- module-virtual-source.la
+ module-virtual-source.la \
+ module-fmaudiosma.la
# See comment at librtp.la above
if !OS_IS_WIN32
@@ -1318,7 +1319,8 @@ SYMDEF_FILES = \
modules/dbus/module-dbus-protocol-symdef.h \
modules/module-loopback-symdef.h \
modules/module-virtual-sink-symdef.h \
- modules/module-virtual-source-symdef.h
+ modules/module-virtual-source-symdef.h \
+ modules/module-fmaudiosma-symdef.h
EXTRA_DIST += $(SYMDEF_FILES)
BUILT_SOURCES += $(SYMDEF_FILES)
@@ -1495,6 +1497,10 @@ module_virtual_source_la_SOURCES = modules/module-virtual-source.c
module_virtual_source_la_LDFLAGS = $(MODULE_LDFLAGS)
module_virtual_source_la_LIBADD = $(AM_LIBADD) libpulsecore- at PA_MAJORMINOR@.la libpulsecommon- at PA_MAJORMINOR@.la libpulse.la
+module_fmaudiosma_la_SOURCES = modules/module-fmaudiosma.c
+module_fmaudiosma_la_LDFLAGS = $(MODULE_LDFLAGS)
+module_fmaudiosma_la_LIBADD = $(AM_LIBADD) libpulsecore- at PA_MAJORMINOR@.la libpulsecommon- at PA_MAJORMINOR@.la libpulse.la
+
# X11
module_x11_bell_la_SOURCES = modules/x11/module-x11-bell.c
diff --git a/src/modules/module-fmaudiosma.c b/src/modules/module-fmaudiosma.c
new file mode 100644
index 0000000..636500e
--- /dev/null
+++ b/src/modules/module-fmaudiosma.c
@@ -0,0 +1,692 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2011 Alban Browaeys <prahal at yahoo.com>
+
+ Base on module-echo-cancel.c
+
+ Copyright 2010 Wim Taymans <wim.taymans at gmail.com>
+
+ 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, 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 <math.h>
+
+#include <pulse/xmalloc.h>
+#include <pulse/i18n.h>
+#include <pulse/timeval.h>
+#include <pulse/rtclock.h>
+
+#include <pulsecore/atomic.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/core-error.h>
+#include <pulsecore/namereg.h>
+#include <pulsecore/sink.h>
+#include <pulsecore/module.h>
+#include <pulsecore/core-rtclock.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/core-error.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/thread.h>
+#include <pulsecore/thread-mq.h>
+#include <pulsecore/rtpoll.h>
+#include <pulsecore/sample-util.h>
+#include <pulsecore/ltdl-helper.h>
+
+#include "module-fmaudiosma-symdef.h"
+
+PA_MODULE_AUTHOR("Alban Browaeys");
+PA_MODULE_DESCRIPTION("Fortemedia Small Microphones Array");
+PA_MODULE_VERSION(PACKAGE_VERSION);
+PA_MODULE_LOAD_ONCE(FALSE);
+PA_MODULE_USAGE(
+ _("source_name=<name for the source> "
+ "source_properties=<properties for the source> "
+ "source_master=<name of source to filter> "
+ "format=<sample format> "
+ "rate=<sample rate> "
+ "channels=<number of channels> "
+ "channel_map=<channel map> "
+ ));
+
+#define MEMBLOCKQ_MAXLENGTH (16*1024*1024)
+
+/* Common data structures */
+
+typedef struct pa_fmaudiosma pa_fmaudiosma;
+
+struct pa_fmaudiosma {
+ pa_bool_t (*init) (pa_core *c,
+ pa_fmaudiosma *fs,
+ pa_sample_spec *source_ss,
+ pa_channel_map *source_map);
+ void (*run) (pa_fmaudiosma *fs, const uint8_t *rec, uint8_t *out, int n);
+ void (*done) (pa_fmaudiosma *fs);
+};
+
+/* FmAudio SMA functions */
+pa_bool_t pa_fmaudiosma_init(pa_core *c, pa_fmaudiosma *fs,
+ pa_sample_spec *source_ss, pa_channel_map *source_map);
+void pa_fmaudiosma_run(pa_fmaudiosma *fs, const uint8_t *rec, uint8_t *out, int n);
+void pa_fmaudiosma_done(pa_fmaudiosma *fs);
+
+static void pa_fmaudiosma_fixate_spec(pa_sample_spec *source_ss, pa_channel_map *source_map)
+{
+ source_ss->format = PA_SAMPLE_FLOAT32NE;
+ source_ss->channels = 2;
+ pa_channel_map_init_stereo(source_map);
+}
+
+pa_bool_t pa_fmaudiosma_init(pa_core *c, pa_fmaudiosma *fs,
+ pa_sample_spec *source_ss, pa_channel_map *source_map)
+{
+ pa_fmaudiosma_fixate_spec(source_ss, source_map);
+
+ return TRUE;
+}
+
+
+void pa_fmaudiosma_run(pa_fmaudiosma *fs, const uint8_t *rec, uint8_t *out, int n) {
+ unsigned i;
+
+ float *d, *s;
+ int n_frames = n / (sizeof(float) * 2);
+ memset(out, 0, n_frames * sizeof (float) * 2);
+
+ d = (float *)out;
+ s = (float *)rec;
+ for (i = n_frames; i > 0; i--, s += 2, d += 2)
+ d[0] = d[1] = s[0] - (s[0] + s[1]);
+}
+
+void pa_fmaudiosma_done(pa_fmaudiosma *fs)
+{
+}
+
+/* This module creates a new (virtual) source and sink.
+ *
+ * The data sent to the new sink is kept in a memblockq before being
+ * forwarded to the real sink_master.
+ *
+ * Data read from source_master is matched against the saved sink data and
+ * echo canceled data is then pushed onto the new source.
+ *
+ * Both source and sink masters have their own threads to push/pull data
+ * respectively. We however perform all our actions in the source IO thread.
+ * To do this we send all played samples to the source IO thread where they
+ * are then pushed into the memblockq.
+ *
+ * Alignment is performed in two steps:
+ *
+ * 1) when something happens that requires quick adjustement of the alignment of
+ * capture and playback samples, we perform a resync. This adjusts the
+ * position in the playback memblock to the requested sample. Quick
+ * adjustements include moving the playback samples before the capture
+ * samples (because else the echo canceler does not work) or when the
+ * playback pointer drifts too far away.
+ *
+ * 2) periodically check the difference between capture and playback. we use a
+ * low and high watermark for adjusting the alignment. playback should always
+ * be before capture and the difference should not be bigger than one frame
+ * size. We would ideally like to resample the sink_input but most driver
+ * don't give enough accuracy to be able to do that right now.
+ */
+
+struct userdata {
+ pa_core *core;
+ pa_module *module;
+
+ pa_fmaudiosma *fs;
+
+ pa_source *source;
+ pa_bool_t source_auto_desc;
+ pa_source_output *source_output;
+ pa_memblockq *source_memblockq; /* echo canceler needs fixed sized chunks */
+ size_t source_skip;
+
+ int64_t recv_counter;
+
+ FILE *captured_file;
+ FILE *played_file;
+ FILE *canceled_file;
+};
+
+
+static const char* const valid_modargs[] = {
+ "source_name",
+ "source_properties",
+ "source_master",
+ "format",
+ "rate",
+ "channels",
+ "channel_map",
+ NULL
+};
+
+enum {
+ SOURCE_OUTPUT_MESSAGE_POST = PA_SOURCE_OUTPUT_MESSAGE_MAX,
+ SOURCE_OUTPUT_MESSAGE_REWIND,
+ SOURCE_OUTPUT_MESSAGE_LATENCY_SNAPSHOT,
+ SOURCE_OUTPUT_MESSAGE_APPLY_DIFF_TIME
+};
+
+enum {
+ SINK_INPUT_MESSAGE_LATENCY_SNAPSHOT
+};
+
+
+/* Called from source 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) +
+ /* Add the latency internal to our source output on top */
+ pa_bytes_to_usec(pa_memblockq_get_length(u->source_output->thread_info.delay_memblockq), &u->source_output->source->sample_spec);
+
+ return 0;
+
+ }
+
+ return pa_source_process_msg(o, code, data, offset, chunk);
+}
+
+/* Called from main context */
+static int source_set_state_cb(pa_source *s, pa_source_state_t state) {
+ 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(pa_source_output_get_state(u->source_output)))
+ 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;
+
+ pa_log_debug("Source update requested latency");
+
+ /* 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(pa_source_get_state(s)) ||
+ !PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
+ return;
+
+ /* FIXME, no volume control in source_output, set volume at the master */
+ pa_source_set_volume(u->source_output->source, &s->volume, TRUE);
+}
+
+static void source_get_volume_cb(pa_source *s) {
+ struct userdata *u;
+
+ pa_source_assert_ref(s);
+ pa_assert_se(u = s->userdata);
+
+ if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)) ||
+ !PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
+ return;
+
+ /* FIXME, no volume control in source_output, get the info from the master */
+ pa_source_get_volume(u->source_output->source, TRUE);
+
+ if (pa_cvolume_equal(&s->volume,&u->source_output->source->volume))
+ /* no change */
+ return;
+
+ s->volume = u->source_output->source->volume;
+ pa_source_set_soft_volume(s, NULL);
+}
+
+
+/* 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(pa_source_get_state(s)) ||
+ !PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
+ return;
+
+ /* FIXME, no volume control in source_output, set mute at the master */
+ pa_source_set_mute(u->source_output->source, TRUE, TRUE);
+}
+
+/* Called from main context */
+static void source_get_mute_cb(pa_source *s) {
+ struct userdata *u;
+
+ pa_source_assert_ref(s);
+ pa_assert_se(u = s->userdata);
+
+ if (!PA_SOURCE_IS_LINKED(pa_source_get_state(s)) ||
+ !PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output)))
+ return;
+
+ /* FIXME, no volume control in source_output, get the info from the master */
+ pa_source_get_mute(u->source_output->source, TRUE);
+}
+
+/* Called from input thread context */
+static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
+ struct userdata *u;
+ pa_memchunk cchunk;
+ uint8_t *rdata, *cdata;
+
+ pa_source_output_assert_ref(o);
+ pa_source_output_assert_io_context(o);
+ pa_assert_se(u = o->userdata);
+
+ if (!PA_SOURCE_OUTPUT_IS_LINKED(pa_source_output_get_state(u->source_output))) {
+ pa_log("push when no link?");
+ return;
+ }
+
+ rdata = pa_memblock_acquire(chunk->memblock);
+ rdata += chunk->index;
+
+ cchunk.index = 0;
+ cchunk.length = chunk->length;
+ cchunk.memblock = pa_memblock_new(u->source->core->mempool, cchunk.length);
+ cdata = pa_memblock_acquire(cchunk.memblock);
+
+ u->fs->run(u->fs, rdata, cdata, chunk->length);
+
+ pa_memblock_release(cchunk.memblock);
+ pa_memblock_release(chunk->memblock);
+
+ /* forward the data to the virtual source */
+ pa_source_post(u->source, &cchunk);
+ pa_memblock_unref(cchunk.memblock);
+}
+
+/* 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);
+
+}
+
+
+/* Called from output thread context */
+static int source_output_process_msg_cb(pa_msgobject *obj, int code, void *data, int64_t offset, pa_memchunk *chunk) {
+ return pa_source_output_process_msg(obj, code, data, offset, chunk);
+}
+
+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));
+
+ pa_log_debug("Source output %p attach", o);
+
+ 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);
+
+ pa_source_detach_within_thread(u->source);
+ pa_source_set_rtpoll(u->source, NULL);
+
+ pa_log_debug("Source output %p detach", o);
+
+}
+
+/* Called from output thread context */
+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_source_output_assert_io_context(o);
+ pa_assert_se(u = o->userdata);
+
+ pa_log_debug("Source output %p state %d", o, state);
+}
+
+/* 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 output, followed
+ * by the source. That means the source callbacks must be protected
+ * against an unconnected source output! */
+ pa_source_output_unlink(u->source_output);
+ pa_source_unlink(u->source);
+
+ pa_source_output_unref(u->source_output);
+ u->source_output = NULL;
+
+ pa_source_unref(u->source);
+ u->source = NULL;
+
+ pa_log_debug("Source output kill %p", o);
+
+ pa_module_unload_request(u->module, TRUE);
+}
+
+/* Called from main thread */
+static pa_bool_t source_output_may_move_to_cb(pa_source_output *o, pa_source *dest) {
+ struct userdata *u;
+
+ pa_source_output_assert_ref(o);
+ pa_assert_ctl_context();
+ pa_assert_se(u = o->userdata);
+
+ return TRUE;
+}
+
+
+
+/* Called from main thread */
+static void source_output_moving_cb(pa_source_output *o, pa_source *dest) {
+ struct userdata *u;
+
+ 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);
+
+ if (u->source_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, "FmAudio SMA Source %s on %s",
+ pa_proplist_gets(u->source->proplist, "device.fmaudiosma.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 source_ss;
+ pa_channel_map source_map;
+ pa_modargs *ma;
+ pa_source *source_master=NULL;
+ pa_source_output_new_data source_output_data;
+ pa_source_new_data source_data;
+ pa_memchunk silence;
+
+ pa_assert(m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("Failed to parse module arguments.");
+ goto fail;
+ }
+
+ if (!(source_master = pa_namereg_get(m->core, pa_modargs_get_value(ma, "source_master", NULL), PA_NAMEREG_SOURCE))) {
+ pa_log("Master source not found");
+ goto fail;
+ }
+ pa_assert(source_master);
+
+ source_ss = source_master->sample_spec;
+ source_map = source_master->channel_map;
+ if (pa_modargs_get_sample_spec_and_channel_map(ma, &source_ss, &source_map, PA_CHANNEL_MAP_DEFAULT) < 0) {
+ pa_log("Invalid sample format specification or channel map");
+ goto fail;
+ }
+
+ u = pa_xnew0(struct userdata, 1);
+ if (!u) {
+ pa_log("Failed to alloc userdata");
+ goto fail;
+ }
+ u->core = m->core;
+ u->module = m;
+ m->userdata = u;
+
+ u->fs = pa_xnew0(pa_fmaudiosma, 1);
+ if (!u->fs) {
+ pa_log("Failed to alloc FmAudio SMA");
+ goto fail;
+ }
+
+
+ u->fs->init = pa_fmaudiosma_init;
+ u->fs->run = pa_fmaudiosma_run;
+ u->fs->done = pa_fmaudiosma_done;
+
+ if (u->fs->init) {
+ if (!u->fs->init(u->core, u->fs, &source_ss, &source_map)) {
+ pa_log("Failed to init FmAudio SMA engine");
+ goto fail;
+ }
+ }
+
+ /* 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.fmaudiosma", source_master->name);
+ pa_source_new_data_set_sample_spec(&source_data, &source_ss);
+ pa_source_new_data_set_channel_map(&source_data, &source_map);
+ pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_MASTER_DEVICE, source_master->name);
+ pa_proplist_sets(source_data.proplist, PA_PROP_DEVICE_CLASS, "filter");
+ pa_proplist_sets(source_data.proplist, "device.fmaudiosma.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->source_auto_desc = !pa_proplist_contains(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION))) {
+ const char *z;
+
+ z = pa_proplist_gets(source_master->proplist, PA_PROP_DEVICE_DESCRIPTION);
+ pa_proplist_setf(source_data.proplist, PA_PROP_DEVICE_DESCRIPTION, "FmAudio SMA Source %s on %s", source_data.name, z ? z : source_master->name);
+ }
+
+ u->source = pa_source_new(m->core, &source_data,
+ PA_SOURCE_HW_MUTE_CTRL|PA_SOURCE_HW_VOLUME_CTRL|PA_SOURCE_DECIBEL_VOLUME|
+ (source_master->flags & (PA_SOURCE_LATENCY|PA_SOURCE_DYNAMIC_LATENCY)));
+ 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 = source_set_state_cb;
+ u->source->update_requested_latency = source_update_requested_latency_cb;
+ u->source->set_volume = source_set_volume_cb;
+ u->source->set_mute = source_set_mute_cb;
+ u->source->get_volume = source_get_volume_cb;
+ u->source->get_mute = source_get_mute_cb;
+ u->source->userdata = u;
+
+ pa_source_set_asyncmsgq(u->source, 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;
+ source_output_data.source = source_master;
+ /* FIXME
+ source_output_data.flags = PA_SOURCE_OUTPUT_DONT_INHIBIT_AUTO_SUSPEND; */
+
+ pa_proplist_sets(source_output_data.proplist, PA_PROP_MEDIA_NAME, "FmAudio SMA Source Stream");
+ pa_proplist_sets(source_output_data.proplist, PA_PROP_MEDIA_ROLE, "filter");
+ pa_source_output_new_data_set_sample_spec(&source_output_data, &source_ss);
+ pa_source_output_new_data_set_channel_map(&source_output_data, &source_map);
+
+ 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)
+ goto fail;
+
+ u->source_output->parent.process_msg = source_output_process_msg_cb;
+ u->source_output->push = source_output_push_cb;
+ u->source_output->process_rewind = source_output_process_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->may_move_to = source_output_may_move_to_cb;
+ u->source_output->moving = source_output_moving_cb;
+ u->source_output->userdata = u;
+
+ pa_silence_memchunk_get(&m->core->silence_cache, m->core->mempool, &silence, &source_ss, 0);
+
+ u->source_memblockq = pa_memblockq_new(0, MEMBLOCKQ_MAXLENGTH, 0,
+ pa_frame_size(&source_ss), 1, 1, 0, &silence);
+
+ pa_memblock_unref(silence.memblock);
+
+ if (!u->source_memblockq) {
+ pa_log("Failed to create memblockq.");
+ goto fail;
+ }
+
+ pa_source_put(u->source);
+ pa_source_output_put(u->source_output);
+
+ pa_modargs_free(ma);
+
+ return 0;
+
+ fail:
+ if (ma)
+ pa_modargs_free(ma);
+
+ pa__done(m);
+
+ return -1;
+}
+
+int pa__get_n_used(pa_module *m) {
+ struct userdata *u;
+
+ pa_assert(m);
+ pa_assert_se(u = m->userdata);
+
+ return pa_source_linked_by(u->source);
+}
+
+void pa__done(pa_module*m) {
+ struct userdata *u;
+
+ pa_assert(m);
+
+ if (!(u = m->userdata))
+ return;
+
+ /* See comments in source_output_kill_cb() above regarding
+ * destruction order! */
+
+ if (u->source_output)
+ pa_source_output_unlink(u->source_output);
+
+ if (u->source)
+ pa_source_unlink(u->source);
+
+ if (u->source_output)
+ pa_source_output_unref(u->source_output);
+
+ if (u->source)
+ pa_source_unref(u->source);
+
+ if (u->source_memblockq)
+ pa_memblockq_free(u->source_memblockq);
+
+ if (u->fs) {
+ if (u->fs->done)
+ u->fs->done(u->fs);
+
+ pa_xfree(u->fs);
+ }
+
+ pa_xfree(u);
+}
--
1.7.2.3
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