[pulseaudio-discuss] [PATCH 2/6] Turn device ports into reference counted objects
David Henningsson
david.henningsson at canonical.com
Thu Nov 10 15:27:41 PST 2011
Since both cards and sinks can hold references to a port, it makes
sense to reference count them. Although no current implementation
actually has sinks with ports but without a card, it felt wrong
to make it harder to make such an implementation in the future.
Signed-off-by: David Henningsson <david.henningsson at canonical.com>
---
src/Makefile.am | 1 +
src/pulsecore/device-port.c | 66 +++++++++++++++++++++++++++++++++++++++++++
src/pulsecore/device-port.h | 61 +++++++++++++++++++++++++++++++++++++++
src/pulsecore/sink.c | 41 +-------------------------
src/pulsecore/sink.h | 17 +----------
src/pulsecore/source.c | 20 +-----------
src/pulsecore/source.h | 1 +
7 files changed, 134 insertions(+), 73 deletions(-)
create mode 100644 src/pulsecore/device-port.c
create mode 100644 src/pulsecore/device-port.h
diff --git a/src/Makefile.am b/src/Makefile.am
index ac1d227..016eabe 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -824,6 +824,7 @@ libpulsecore_ at PA_MAJORMINOR@_la_SOURCES = \
pulsecore/shm.c pulsecore/shm.h \
pulsecore/sink-input.c pulsecore/sink-input.h \
pulsecore/sink.c pulsecore/sink.h \
+ pulsecore/device-port.c pulsecore/device-port.h \
pulsecore/sioman.c pulsecore/sioman.h \
pulsecore/sound-file-stream.c pulsecore/sound-file-stream.h \
pulsecore/sound-file.c pulsecore/sound-file.h \
diff --git a/src/pulsecore/device-port.c b/src/pulsecore/device-port.c
new file mode 100644
index 0000000..366287e
--- /dev/null
+++ b/src/pulsecore/device-port.c
@@ -0,0 +1,66 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman at cendio.se> for Cendio AB
+ Copyright 2011 David Henningsson, Canonical Ltd.
+
+ 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.
+***/
+
+
+#include "device-port.h"
+
+PA_DEFINE_PUBLIC_CLASS(pa_device_port, pa_object);
+
+static void device_port_free(pa_object *o) {
+ pa_device_port *p = PA_DEVICE_PORT(o);
+
+ pa_assert(p);
+ pa_assert(pa_device_port_refcnt(p) == 0);
+
+ pa_xfree(p->name);
+ pa_xfree(p->description);
+ pa_xfree(p);
+}
+
+
+pa_device_port *pa_device_port_new(const char *name, const char *description, size_t extra) {
+ pa_device_port *p;
+
+ pa_assert(name);
+
+ p = PA_DEVICE_PORT(pa_object_new_internal(PA_ALIGN(sizeof(pa_device_port)) + extra, pa_device_port_type_id, pa_device_port_check_type));
+ p->parent.free = device_port_free;
+
+ p->name = pa_xstrdup(name);
+ p->description = pa_xstrdup(description);
+ p->priority = 0;
+ p->available = PA_PORT_AVAILABLE_UNKNOWN;
+
+ return p;
+}
+
+void pa_device_port_hashmap_free(pa_hashmap *h) {
+ if (h) {
+ pa_device_port *p;
+
+ while ((p = pa_hashmap_steal_first(h)))
+ pa_device_port_unref(p);
+
+ pa_hashmap_free(h, NULL, NULL);
+ }
+}
diff --git a/src/pulsecore/device-port.h b/src/pulsecore/device-port.h
new file mode 100644
index 0000000..dfe3fc1
--- /dev/null
+++ b/src/pulsecore/device-port.h
@@ -0,0 +1,61 @@
+#ifndef foopulsedeviceporthfoo
+#define foopulsedeviceporthfoo
+
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+ Copyright 2006 Pierre Ossman <ossman at cendio.se> for Cendio AB
+ Copyright 2011 David Henningsson, Canonical Ltd.
+
+ 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 <inttypes.h>
+
+#include <pulse/def.h>
+#include <pulsecore/object.h>
+#include <pulsecore/hashmap.h>
+
+typedef struct pa_device_port pa_device_port;
+
+struct pa_device_port {
+ pa_object parent; /* Needed for reference counting */
+
+ char *name;
+ char *description;
+
+ unsigned priority;
+ pa_port_available_t available; /* PA_PORT_AVAILABLE_UNKNOWN, PA_PORT_AVAILABLE_NO or PA_PORT_AVAILABLE_YES */
+
+ /* .. followed by some implementation specific data */
+};
+
+PA_DECLARE_PUBLIC_CLASS(pa_device_port);
+#define PA_DEVICE_PORT(s) (pa_device_port_cast(s))
+
+#define PA_DEVICE_PORT_DATA(d) ((void*) ((uint8_t*) d + PA_ALIGN(sizeof(pa_device_port))))
+
+pa_device_port *pa_device_port_new(const char *name, const char *description, size_t extra);
+
+void pa_device_port_hashmap_free(pa_hashmap *h);
+
+#endif
diff --git a/src/pulsecore/sink.c b/src/pulsecore/sink.c
index 454285f..3f809d8 100644
--- a/src/pulsecore/sink.c
+++ b/src/pulsecore/sink.c
@@ -139,40 +139,11 @@ void pa_sink_new_data_done(pa_sink_new_data *data) {
pa_proplist_free(data->proplist);
- if (data->ports) {
- pa_device_port *p;
-
- while ((p = pa_hashmap_steal_first(data->ports)))
- pa_device_port_free(p);
-
- pa_hashmap_free(data->ports, NULL, NULL);
- }
-
+ pa_device_port_hashmap_free(data->ports);
pa_xfree(data->name);
pa_xfree(data->active_port);
}
-pa_device_port *pa_device_port_new(const char *name, const char *description, size_t extra) {
- pa_device_port *p;
-
- pa_assert(name);
-
- p = pa_xmalloc(PA_ALIGN(sizeof(pa_device_port)) + extra);
- p->name = pa_xstrdup(name);
- p->description = pa_xstrdup(description);
-
- p->priority = 0;
-
- return p;
-}
-
-void pa_device_port_free(pa_device_port *p) {
- pa_assert(p);
-
- pa_xfree(p->name);
- pa_xfree(p->description);
- pa_xfree(p);
-}
/* Called from main context */
static void reset_callbacks(pa_sink *s) {
@@ -762,15 +733,7 @@ static void sink_free(pa_object *o) {
if (s->proplist)
pa_proplist_free(s->proplist);
- if (s->ports) {
- pa_device_port *p;
-
- while ((p = pa_hashmap_steal_first(s->ports)))
- pa_device_port_free(p);
-
- pa_hashmap_free(s->ports, NULL, NULL);
- }
-
+ pa_device_port_hashmap_free(s->ports);
pa_xfree(s);
}
diff --git a/src/pulsecore/sink.h b/src/pulsecore/sink.h
index 04fab19..56fa735 100644
--- a/src/pulsecore/sink.h
+++ b/src/pulsecore/sink.h
@@ -24,7 +24,6 @@
***/
typedef struct pa_sink pa_sink;
-typedef struct pa_device_port pa_device_port;
typedef struct pa_sink_volume_change pa_sink_volume_change;
#include <inttypes.h>
@@ -43,6 +42,7 @@ typedef struct pa_sink_volume_change pa_sink_volume_change;
#include <pulsecore/asyncmsgq.h>
#include <pulsecore/msgobject.h>
#include <pulsecore/rtpoll.h>
+#include <pulsecore/device-port.h>
#include <pulsecore/card.h>
#include <pulsecore/queue.h>
#include <pulsecore/thread-mq.h>
@@ -55,18 +55,6 @@ static inline pa_bool_t PA_SINK_IS_LINKED(pa_sink_state_t x) {
return x == PA_SINK_RUNNING || x == PA_SINK_IDLE || x == PA_SINK_SUSPENDED;
}
-struct pa_device_port {
- char *name;
- char *description;
-
- unsigned priority;
- pa_port_available_t available; /* PA_PORT_AVAILABLE_UNKNOWN, PA_PORT_AVAILABLE_NO or PA_PORT_AVAILABLE_YES */
-
- /* .. followed by some implementation specific data */
-};
-
-#define PA_DEVICE_PORT_DATA(d) ((void*) ((uint8_t*) d + PA_ALIGN(sizeof(pa_device_port))))
-
/* A generic definition for void callback functions */
typedef void(*pa_sink_cb_t)(pa_sink *s);
@@ -500,9 +488,6 @@ void pa_sink_invalidate_requested_latency(pa_sink *s, pa_bool_t dynamic);
pa_usec_t pa_sink_get_latency_within_thread(pa_sink *s);
-pa_device_port *pa_device_port_new(const char *name, const char *description, size_t extra);
-void pa_device_port_free(pa_device_port *p);
-
/* Verify that we called in IO context (aka 'thread context), or that
* the sink is not yet set up, i.e. the thread not set up yet. See
* pa_assert_io_context() in thread-mq.h for more information. */
diff --git a/src/pulsecore/source.c b/src/pulsecore/source.c
index 6da6ef2..4502358 100644
--- a/src/pulsecore/source.c
+++ b/src/pulsecore/source.c
@@ -131,15 +131,7 @@ void pa_source_new_data_done(pa_source_new_data *data) {
pa_proplist_free(data->proplist);
- if (data->ports) {
- pa_device_port *p;
-
- while ((p = pa_hashmap_steal_first(data->ports)))
- pa_device_port_free(p);
-
- pa_hashmap_free(data->ports, NULL, NULL);
- }
-
+ pa_device_port_hashmap_free(data->ports);
pa_xfree(data->name);
pa_xfree(data->active_port);
}
@@ -671,15 +663,7 @@ static void source_free(pa_object *o) {
if (s->proplist)
pa_proplist_free(s->proplist);
- if (s->ports) {
- pa_device_port *p;
-
- while ((p = pa_hashmap_steal_first(s->ports)))
- pa_device_port_free(p);
-
- pa_hashmap_free(s->ports, NULL, NULL);
- }
-
+ pa_device_port_hashmap_free(s->ports);
pa_xfree(s);
}
diff --git a/src/pulsecore/source.h b/src/pulsecore/source.h
index c5cfb39..e6f7028 100644
--- a/src/pulsecore/source.h
+++ b/src/pulsecore/source.h
@@ -43,6 +43,7 @@ typedef struct pa_source_volume_change pa_source_volume_change;
#include <pulsecore/msgobject.h>
#include <pulsecore/rtpoll.h>
#include <pulsecore/card.h>
+#include <pulsecore/device-port.h>
#include <pulsecore/queue.h>
#include <pulsecore/thread-mq.h>
#include <pulsecore/source-output.h>
--
1.7.5.4
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