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Add HAL sound device wrapper plugins. Closes #329106

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Original commit message from CVS:
* configure.ac:
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* ext/Makefile.am:
* ext/hal/Makefile.am:
* ext/hal/gsthalaudiosink.c: (gst_hal_audio_sink_base_init),
(gst_hal_audio_sink_class_init), (gst_hal_audio_sink_reset),
(gst_hal_audio_sink_init), (gst_hal_audio_sink_dispose),
(do_toggle_element), (gst_hal_audio_sink_set_property),
(gst_hal_audio_sink_get_property),
(gst_hal_audio_sink_change_state):
* ext/hal/gsthalaudiosink.h:
* ext/hal/gsthalaudiosrc.c: (gst_hal_audio_src_base_init),
(gst_hal_audio_src_class_init), (gst_hal_audio_src_reset),
(gst_hal_audio_src_init), (gst_hal_audio_src_dispose),
(do_toggle_element), (gst_hal_audio_src_set_property),
(gst_hal_audio_src_get_property), (gst_hal_audio_src_change_state):
* ext/hal/gsthalaudiosrc.h:
* ext/hal/gsthalelements.c: (plugin_init):
* ext/hal/gsthalelements.h:
* ext/hal/hal.c: (gst_hal_get_string),
(gst_hal_render_bin_from_udi), (gst_hal_get_audio_sink),
(gst_hal_get_audio_src):
* ext/hal/hal.h:
Add HAL sound device wrapper plugins. Closes #329106
This commit is contained in:
Wim Taymans 2006-02-15 12:17:28 +00:00
parent 7531337e94
commit 5e5386b430
16 changed files with 1001 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

30
ChangeLog
View file

@ -1,3 +1,33 @@
2006-02-15 Wim Taymans <wim@fluendo.com>
* configure.ac:
* docs/plugins/Makefile.am:
* docs/plugins/gst-plugins-good-plugins-docs.sgml:
* docs/plugins/gst-plugins-good-plugins-sections.txt:
* docs/plugins/gst-plugins-good-plugins.hierarchy:
* ext/Makefile.am:
* ext/hal/Makefile.am:
* ext/hal/gsthalaudiosink.c: (gst_hal_audio_sink_base_init),
(gst_hal_audio_sink_class_init), (gst_hal_audio_sink_reset),
(gst_hal_audio_sink_init), (gst_hal_audio_sink_dispose),
(do_toggle_element), (gst_hal_audio_sink_set_property),
(gst_hal_audio_sink_get_property),
(gst_hal_audio_sink_change_state):
* ext/hal/gsthalaudiosink.h:
* ext/hal/gsthalaudiosrc.c: (gst_hal_audio_src_base_init),
(gst_hal_audio_src_class_init), (gst_hal_audio_src_reset),
(gst_hal_audio_src_init), (gst_hal_audio_src_dispose),
(do_toggle_element), (gst_hal_audio_src_set_property),
(gst_hal_audio_src_get_property), (gst_hal_audio_src_change_state):
* ext/hal/gsthalaudiosrc.h:
* ext/hal/gsthalelements.c: (plugin_init):
* ext/hal/gsthalelements.h:
* ext/hal/hal.c: (gst_hal_get_string),
(gst_hal_render_bin_from_udi), (gst_hal_get_audio_sink),
(gst_hal_get_audio_src):
* ext/hal/hal.h:
Add HAL sound device wrapper plugins. Closes #329106
2006-02-15 Wim Taymans <wim@fluendo.com>
* gst/avi/gstavidemux.c: (gst_avi_demux_handle_src_event):

9
configure.ac
View file

@ -385,6 +385,14 @@ GST_CHECK_FEATURE(GCONF, [GConf libraries], , [
AC_SUBST(GCONF_LIBS)
])
dnl *** HAL ***
translit(dnm, m, l) AM_CONDITIONAL(USE_HAL, true)
GST_CHECK_FEATURE(HAL, [HAL libraries], , [
PKG_CHECK_MODULES(HAL, [hal >= 0.5.6, dbus-1 >= 0.32], HAVE_HAL="yes", HAVE_HAL="no")
AC_SUBST(HAL_CFLAGS)
AC_SUBST(HAL_LIBS)
])
dnl *** jpeg ***
dnl FIXME: we could use header checks here as well IMO
translit(dnm, m, l) AM_CONDITIONAL(USE_JPEG, true)
@ -616,6 +624,7 @@ ext/dv/Makefile
ext/esd/Makefile
ext/flac/Makefile
ext/gconf/Makefile
ext/hal/Makefile
ext/ladspa/Makefile
ext/libcaca/Makefile
ext/libpng/Makefile

2
docs/plugins/Makefile.am
View file

@ -83,6 +83,8 @@ EXTRA_HFILES = \
$(top_srcdir)/ext/cairo/gsttimeoverlay.h \
$(top_srcdir)/ext/cdio/gstcdiocddasrc.h \
$(top_srcdir)/ext/flac/gstflacdec.h \
$(top_srcdir)/ext/hal/gsthalaudiosink.h \
$(top_srcdir)/ext/hal/gsthalaudiosrc.h \
$(top_srcdir)/gst/multipart/multipartmux.c \
$(top_srcdir)/gst/multipart/multipartdemux.c \
$(top_srcdir)/gst/udp/gstmultiudpsink.h \

3
docs/plugins/gst-plugins-good-plugins-docs.sgml
View file

@ -19,6 +19,8 @@
<xi:include href="xml/element-cdiocddasrc.xml" />
<xi:include href="xml/element-flacdec.xml" />
<xi:include href="xml/element-goom.xml" />
<xi:include href="xml/element-halaudiosink.xml" />
<xi:include href="xml/element-halaudiosrc.xml" />
<xi:include href="xml/element-id3demux.xml" />
<xi:include href="xml/element-level.xml" />
<xi:include href="xml/element-multiudpsink.xml" />
@ -51,6 +53,7 @@
<xi:include href="xml/plugin-flxdec.xml" />
<xi:include href="xml/plugin-gconfelements.xml" />
<xi:include href="xml/plugin-goom.xml" />
<xi:include href="xml/plugin-halelements.xml" />
<xi:include href="xml/plugin-id3demux.xml" />
<xi:include href="xml/plugin-jpeg.xml" />
<xi:include href="xml/plugin-level.xml" />

16
docs/plugins/gst-plugins-good-plugins-sections.txt
View file

@ -54,6 +54,22 @@ GstGoom
GstGoomClass
</SECTION>
<SECTION>
<FILE>element-halaudiosink</FILE>
GstHalAudioSink
<TITLE>halaudiosink</TITLE>
<SUBSECTION Standard>
GstHalAudioSinkClass
</SECTION>
<SECTION>
<FILE>element-halaudiosrc</FILE>
GstHalAudioSrc
<TITLE>halaudiosrc</TITLE>
<SUBSECTION Standard>
GstHalAudioSrcClass
</SECTION>
<SECTION>
<FILE>element-id3demux</FILE>
GstID3Demux

2
docs/plugins/gst-plugins-good-plugins.hierarchy
View file

@ -12,6 +12,8 @@ GObject
GstGConfAudioSink
GstAutoVideoSink
GstAutoAudioSink
GstHalAudioSink
GstHalAudioSrc
GstSpeexEnc
GstSpeexDec
GstBaseSink

8
ext/Makefile.am
View file

@ -40,6 +40,12 @@ endif
GDK_PIXBUF_DIR =
# endif
if USE_HAL
HAL_DIR = hal
else
HAL_DIR =
endif
if USE_JPEG
JPEG_DIR = jpeg
else
@ -109,6 +115,7 @@ SUBDIRS = \
$(FLAC_DIR) \
$(GCONF_DIR) \
$(GDK_PIXBUF_DIR) \
$(HAL_DIR) \
$(JPEG_DIR) \
$(LADSPA_DIR) \
$(LIBCACA_DIR) \
@ -127,6 +134,7 @@ DIST_SUBDIRS = \
esd \
flac \
gconf \
hal \
jpeg \
ladspa \
libcaca \

17
ext/hal/Makefile.am Normal file
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@ -0,0 +1,17 @@
plugin_LTLIBRARIES = libgsthalelements.la
libgsthalelements_la_SOURCES = \
gsthalaudiosink.c \
gsthalaudiosrc.c \
gsthalelements.c \
hal.c
libgsthalelements_la_CFLAGS = $(GST_CFLAGS) $(HAL_CFLAGS)
libgsthalelements_la_LIBADD = $(GST_LIBS) $(HAL_LIBS)
libgsthalelements_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS)
noinst_HEADERS = \
gsthalaudiosink.h \
gsthalaudiosrc.h \
gsthalelements.h \
hal.h

254
ext/hal/gsthalaudiosink.c Normal file
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@ -0,0 +1,254 @@
/* GStreamer
* (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Jürg Billeter <j@bitron.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-halaudiosink
*
* <refsect2>
* <para>
* HalAudioSink allows access to output of sound devices by specifying the
* corresponding persistent Unique Device Id (UDI) from the Hardware Abstraction
* Layer (HAL) in the <link linkend="GstHalAudioSrc--udi">udi</link> property.
* It currently always embeds alsasink as HAL doesn't support other sound
* systems yet.
* </para>
* <title>Examples</title>
* <para>
* To list the UDIs of all your ALSA output devices :
* <programlisting>
* hal-find-by-property --key alsa.type --string playback
* </programlisting>
* Here is a pipeline to test your sound output :
* <programlisting>
* gst-launch -v audiotestsrc ! halaudiosink udi=/org/freedesktop/Hal/devices/pci_8086_27d8_alsa_playback_0
* </programlisting>
* This pipeline produces a test signal on the specified sound device.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gsthalelements.h"
#include "gsthalaudiosink.h"
static void gst_hal_audio_sink_dispose (GObject * object);
static GstStateChangeReturn
gst_hal_audio_sink_change_state (GstElement * element,
GstStateChange transition);
enum
{
PROP_0,
PROP_UDI
};
GST_BOILERPLATE (GstHalAudioSink, gst_hal_audio_sink, GstBin, GST_TYPE_BIN);
static void gst_hal_audio_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_hal_audio_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void
gst_hal_audio_sink_base_init (gpointer klass)
{
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
GstElementDetails gst_hal_audio_sink_details = {
"HAL audio sink",
"Sink/Audio",
"Audio sink for sound device access via HAL",
"Jürg Billeter <j@bitron.ch>"
};
GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
gst_element_class_add_pad_template (eklass,
gst_static_pad_template_get (&sink_template));
gst_element_class_set_details (eklass, &gst_hal_audio_sink_details);
}
static void
gst_hal_audio_sink_class_init (GstHalAudioSinkClass * klass)
{
GObjectClass *oklass = G_OBJECT_CLASS (klass);
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
oklass->set_property = gst_hal_audio_sink_set_property;
oklass->get_property = gst_hal_audio_sink_get_property;
oklass->dispose = gst_hal_audio_sink_dispose;
eklass->change_state = gst_hal_audio_sink_change_state;
g_object_class_install_property (oklass, PROP_UDI,
g_param_spec_string ("udi",
"UDI", "Unique Device Id", NULL, G_PARAM_READWRITE));
}
/*
* Hack to make negotiation work.
*/
static void
gst_hal_audio_sink_reset (GstHalAudioSink * sink)
{
GstPad *targetpad;
/* fakesink */
if (sink->kid) {
gst_element_set_state (sink->kid, GST_STATE_NULL);
gst_bin_remove (GST_BIN (sink), sink->kid);
}
sink->kid = gst_element_factory_make ("fakesink", "testsink");
gst_bin_add (GST_BIN (sink), sink->kid);
targetpad = gst_element_get_pad (sink->kid, "sink");
gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
gst_object_unref (targetpad);
}
static void
gst_hal_audio_sink_init (GstHalAudioSink * sink, GstHalAudioSinkClass * g_class)
{
sink->pad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
gst_hal_audio_sink_reset (sink);
}
static void
gst_hal_audio_sink_dispose (GObject * object)
{
GstHalAudioSink *sink = GST_HAL_AUDIO_SINK (object);
if (sink->udi) {
g_free (sink->udi);
sink->udi = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static gboolean
do_toggle_element (GstHalAudioSink * sink)
{
GstPad *targetpad;
/* kill old element */
if (sink->kid) {
GST_DEBUG_OBJECT (sink, "Removing old kid");
gst_element_set_state (sink->kid, GST_STATE_NULL);
gst_bin_remove (GST_BIN (sink), sink->kid);
sink->kid = NULL;
}
GST_DEBUG_OBJECT (sink, "Creating new kid");
if (!(sink->kid = gst_hal_get_audio_sink (sink->udi))) {
GST_ELEMENT_ERROR (sink, LIBRARY, SETTINGS, (NULL),
("Failed to render audio sink from Hal"));
return FALSE;
}
gst_element_set_state (sink->kid, GST_STATE (sink));
gst_bin_add (GST_BIN (sink), sink->kid);
/* re-attach ghostpad */
GST_DEBUG_OBJECT (sink, "Creating new ghostpad");
targetpad = gst_element_get_pad (sink->kid, "sink");
gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad);
gst_object_unref (targetpad);
GST_DEBUG_OBJECT (sink, "done changing hal audio sink");
return TRUE;
}
static void
gst_hal_audio_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstHalAudioSink *this = GST_HAL_AUDIO_SINK (object);
GST_OBJECT_LOCK (this);
switch (prop_id) {
case PROP_UDI:
if (this->udi)
g_free (this->udi);
this->udi = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (this);
}
static void
gst_hal_audio_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstHalAudioSink *this = GST_HAL_AUDIO_SINK (object);
GST_OBJECT_LOCK (this);
switch (prop_id) {
case PROP_UDI:
g_value_set_string (value, this->udi);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (this);
}
static GstStateChangeReturn
gst_hal_audio_sink_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstHalAudioSink *sink = GST_HAL_AUDIO_SINK (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!do_toggle_element (sink))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
(element, transition), GST_STATE_CHANGE_SUCCESS);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_hal_audio_sink_reset (sink);
break;
default:
break;
}
return ret;
}

58
ext/hal/gsthalaudiosink.h Normal file
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@ -0,0 +1,58 @@
/* GStreamer
* (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Jürg Billeter <j@bitron.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_HAL_AUDIO_SINK_H__
#define __GST_HAL_AUDIO_SINK_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_HAL_AUDIO_SINK \
(gst_hal_audio_sink_get_type ())
#define GST_HAL_AUDIO_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_HAL_AUDIO_SINK, \
GstHalAudioSink))
#define GST_HAL_AUDIO_SINK_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_HAL_AUDIO_SINK, \
GstHalAudioSink))
#define GST_IS_HAL_AUDIO_SINK(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_HAL_AUDIO_SINK))
#define GST_IS_HAL_AUDIO_SINK_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_HAL_AUDIO_SINK))
typedef struct _GstHalAudioSink {
GstBin parent;
/* explicit pointers to stuff used */
gchar *udi;
GstElement *kid;
GstPad *pad;
} GstHalAudioSink;
typedef struct _GstHalAudioSinkClass {
GstBinClass parent_class;
} GstHalAudioSinkClass;
GType gst_hal_audio_sink_get_type (void);
G_END_DECLS
#endif /* __GST_HAL_AUDIO_SINK_H__ */

255
ext/hal/gsthalaudiosrc.c Normal file
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@ -0,0 +1,255 @@
/* GStreamer
* (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* (c) 2005 Tim-Philipp Müller <tim centricular net>
* (c) 2006 Jürg Billeter <j@bitron.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:element-halaudiosrc
*
* <refsect2>
* <para>
* HalAudioSrc allows access to input of sound devices by specifying the
* corresponding persistent Unique Device Id (UDI) from the Hardware Abstraction
* Layer (HAL) in the <link linkend="GstHalAudioSrc--udi">udi</link> property.
* It currently always embeds alsasrc as HAL doesn't support other sound systems
* yet.
* </para>
* <title>Examples</title>
* <para>
* To list the UDIs of all your ALSA input devices :
* <programlisting>
* hal-find-by-property --key alsa.type --string capture
* </programlisting>
* Here is a pipeline to test your sound input :
* <programlisting>
* gst-launch -v halaudiosrc udi=/org/freedesktop/Hal/devices/pci_8086_27d8_alsa_capture_0 ! autoaudiosink
* </programlisting>
* You should now hear yourself with a small delay if you have a microphone
* connected to the specified sound device.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gsthalelements.h"
#include "gsthalaudiosrc.h"
static void gst_hal_audio_src_dispose (GObject * object);
static GstStateChangeReturn
gst_hal_audio_src_change_state (GstElement * element,
GstStateChange transition);
enum
{
PROP_0,
PROP_UDI
};
GST_BOILERPLATE (GstHalAudioSrc, gst_hal_audio_src, GstBin, GST_TYPE_BIN);
static void gst_hal_audio_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_hal_audio_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static void
gst_hal_audio_src_base_init (gpointer klass)
{
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
GstElementDetails gst_hal_audio_src_details = {
"HAL audio source",
"Source/Audio",
"Audio source for sound device access via HAL",
"Jürg Billeter <j@bitron.ch>"
};
GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS_ANY);
gst_element_class_add_pad_template (eklass,
gst_static_pad_template_get (&src_template));
gst_element_class_set_details (eklass, &gst_hal_audio_src_details);
}
static void
gst_hal_audio_src_class_init (GstHalAudioSrcClass * klass)
{
GObjectClass *oklass = G_OBJECT_CLASS (klass);
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
oklass->set_property = gst_hal_audio_src_set_property;
oklass->get_property = gst_hal_audio_src_get_property;
oklass->dispose = gst_hal_audio_src_dispose;
eklass->change_state = gst_hal_audio_src_change_state;
g_object_class_install_property (oklass, PROP_UDI,
g_param_spec_string ("udi",
"UDI", "Unique Device Id", NULL, G_PARAM_READWRITE));
}
/*
* Hack to make negotiation work.
*/
static void
gst_hal_audio_src_reset (GstHalAudioSrc * src)
{
GstPad *targetpad;
/* fakesrc */
if (src->kid) {
gst_element_set_state (src->kid, GST_STATE_NULL);
gst_bin_remove (GST_BIN (src), src->kid);
}
src->kid = gst_element_factory_make ("fakesrc", "testsrc");
gst_bin_add (GST_BIN (src), src->kid);
targetpad = gst_element_get_pad (src->kid, "src");
gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad);
gst_object_unref (targetpad);
}
static void
gst_hal_audio_src_init (GstHalAudioSrc * src, GstHalAudioSrcClass * g_class)
{
src->pad = gst_ghost_pad_new_no_target ("src", GST_PAD_SRC);
gst_element_add_pad (GST_ELEMENT (src), src->pad);
gst_hal_audio_src_reset (src);
}
static void
gst_hal_audio_src_dispose (GObject * object)
{
GstHalAudioSrc *src = GST_HAL_AUDIO_SRC (object);
if (src->udi) {
g_free (src->udi);
src->udi = NULL;
}
GST_CALL_PARENT (G_OBJECT_CLASS, dispose, (object));
}
static gboolean
do_toggle_element (GstHalAudioSrc * src)
{
GstPad *targetpad;
/* kill old element */
if (src->kid) {
GST_DEBUG_OBJECT (src, "Removing old kid");
gst_element_set_state (src->kid, GST_STATE_NULL);
gst_bin_remove (GST_BIN (src), src->kid);
src->kid = NULL;
}
GST_DEBUG_OBJECT (src, "Creating new kid");
if (!(src->kid = gst_hal_get_audio_src (src->udi))) {
GST_ELEMENT_ERROR (src, LIBRARY, SETTINGS, (NULL),
("Failed to render audio source from Hal"));
return FALSE;
}
gst_element_set_state (src->kid, GST_STATE (src));
gst_bin_add (GST_BIN (src), src->kid);
/* re-attach ghostpad */
GST_DEBUG_OBJECT (src, "Creating new ghostpad");
targetpad = gst_element_get_pad (src->kid, "src");
gst_ghost_pad_set_target (GST_GHOST_PAD (src->pad), targetpad);
gst_object_unref (targetpad);
GST_DEBUG_OBJECT (src, "done changing hal audio source");
return TRUE;
}
static void
gst_hal_audio_src_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstHalAudioSrc *this = GST_HAL_AUDIO_SRC (object);
GST_OBJECT_LOCK (this);
switch (prop_id) {
case PROP_UDI:
if (this->udi)
g_free (this->udi);
this->udi = g_value_dup_string (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (this);
}
static void
gst_hal_audio_src_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstHalAudioSrc *this = GST_HAL_AUDIO_SRC (object);
GST_OBJECT_LOCK (this);
switch (prop_id) {
case PROP_UDI:
g_value_set_string (value, this->udi);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
GST_OBJECT_UNLOCK (this);
}
static GstStateChangeReturn
gst_hal_audio_src_change_state (GstElement * element, GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstHalAudioSrc *src = GST_HAL_AUDIO_SRC (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!do_toggle_element (src))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
ret = GST_CALL_PARENT_WITH_DEFAULT (GST_ELEMENT_CLASS, change_state,
(element, transition), GST_STATE_CHANGE_SUCCESS);
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
gst_hal_audio_src_reset (src);
break;
default:
break;
}
return ret;
}

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/* GStreamer
* (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* (c) 2005 Tim-Philipp Müller <tim centricular net>
* (c) 2006 Jürg Billeter <j@bitron.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_HAL_AUDIO_SRC_H__
#define __GST_HAL_AUDIO_SRC_H__
#include <gst/gst.h>
G_BEGIN_DECLS
#define GST_TYPE_HAL_AUDIO_SRC (gst_hal_audio_src_get_type ())
#define GST_HAL_AUDIO_SRC(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_HAL_AUDIO_SRC, GstHalAudioSrc))
#define GST_HAL_AUDIO_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_HAL_AUDIO_SRC, GstHalAudioSrc))
#define GST_IS_HAL_AUDIO_SRC(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_HAL_AUDIO_SRC))
#define GST_IS_HAL_AUDIO_SRC_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_HAL_AUDIO_SRC))
typedef struct _GstHalAudioSrc {
GstBin parent;
/* explicit pointers to stuff used */
gchar *udi;
GstElement *kid;
GstPad *pad;
} GstHalAudioSrc;
typedef struct _GstHalAudioSrcClass {
GstBinClass parent_class;
} GstHalAudioSrcClass;
GType gst_hal_audio_src_get_type (void);
G_END_DECLS
#endif /* __GST_HAL_AUDIO_SRC_H__ */

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/* GStreamer
* (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Jürg Billeter <j@bitron.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; 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 <gst/gst.h>
#include "gsthalelements.h"
#include "gsthalaudiosink.h"
#include "gsthalaudiosrc.h"
GST_DEBUG_CATEGORY (hal_debug);
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (hal_debug, "hal", 0,
"HAL/GStreamer audio input/output wrapper elements");
if (!gst_element_register (plugin, "halaudiosink",
GST_RANK_NONE, GST_TYPE_HAL_AUDIO_SINK) ||
!gst_element_register (plugin, "halaudiosrc",
GST_RANK_NONE, GST_TYPE_HAL_AUDIO_SRC)) {
return FALSE;
}
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
"halelements",
"elements wrapping the GStreamer/HAL audio input/output devices",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)

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/* GStreamer
* (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_HAL_ELEMENTS_H__
#define __GST_HAL_ELEMENTS_H__
#include <hal.h>
GST_DEBUG_CATEGORY_EXTERN (hal_debug);
#define GST_CAT_DEFAULT hal_debug
#endif /* __GST_HAL_ELEMENTS_H__ */

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/* GStreamer
* Copyright (C) <2002> Thomas Vander Stichele <thomas@apestaart.org>
* Copyright (C) <2006> Jürg Billeter <j@bitron.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* this library handles interaction with Hal
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <glib.h>
#include "hal.h"
/* external functions */
/**
* gst_hal_get_string:
* @key: a #gchar corresponding to the key you want to get.
*
* Get Hal UDI @udi's string value.
*
* Returns: a newly allocated #gchar string containing the appropriate pipeline
* for UDI @udi, or NULL in the case of an error..
*/
gchar *
gst_hal_get_string (const gchar * udi)
{
DBusConnection *connection;
DBusError error;
LibHalContext *ctx;
char *type, *string;
char *element;
int card, device;
dbus_error_init (&error);
connection = dbus_bus_get (DBUS_BUS_SYSTEM, &error);
g_return_val_if_fail (connection != NULL, NULL);
ctx = libhal_ctx_new ();
g_return_val_if_fail (ctx != NULL, NULL);
libhal_ctx_set_dbus_connection (ctx, connection);
libhal_ctx_init (ctx, &error);
string = NULL;
if (libhal_device_query_capability (ctx, udi, "alsa", &error)) {
type = libhal_device_get_property_string (ctx, udi, "alsa.type", &error);
if (strcmp (type, "playback") == 0) {
element = "alsasink";
} else if (strcmp (type, "capture") == 0) {
element = "alsasrc";
} else {
element = NULL;
}
card = libhal_device_get_property_int (ctx, udi, "alsa.card", &error);
device = libhal_device_get_property_int (ctx, udi, "alsa.device", &error);
if (device == 0) {
/* handle default device specially to use
* dmix, dsnoop, and softvol if appropriate */
string = g_strdup_printf ("%s device=default:%d", element, card);
} else {
string =
g_strdup_printf ("%s device=plughw:%d,%d", element, card, device);
}
}
libhal_ctx_shutdown (ctx, &error);
libhal_ctx_free (ctx);
dbus_error_free (&error);
return string;
}
/**
* gst_hal_render_bin_from_udi:
* @key: a #gchar string corresponding to a Hal UDI.
*
* Render bin from Hal UDI @udi.
*
* Returns: a #GstElement containing the rendered bin.
*/
GstElement *
gst_hal_render_bin_from_udi (const gchar * udi)
{
GstElement *bin = NULL;
gchar *value;
value = gst_hal_get_string (udi);
if (value)
bin = gst_parse_bin_from_description (value, TRUE, NULL);
g_free (value);
return bin;
}
/**
* gst_hal_get_audio_sink:
*
* Render audio output bin from GStreamer Hal UDI.
* If no device with the specified UDI exists, the default audio sink for the
* platform is used (typically osssink or sunaudiosink).
*
* Returns: a #GstElement containing the audio output bin, or NULL if
* everything failed.
*/
GstElement *
gst_hal_get_audio_sink (const gchar * udi)
{
GstElement *ret = gst_hal_render_bin_from_udi (udi);
if (!ret) {
ret = gst_element_factory_make (DEFAULT_AUDIOSINK, NULL);
if (!ret)
g_warning ("No Hal default audio sink key and %s doesn't work",
DEFAULT_AUDIOSINK);
}
return ret;
}
/**
* gst_hal_get_audio_src:
*
* Render audio acquisition bin from GStreamer Hal UDI.
* If no device with the specified UDI exists, the default audio source for the
* plaform is used (typically osssrc or sunaudiosrc).
*
* Returns: a #GstElement containing the audio source bin, or NULL if
* everything failed.
*/
GstElement *
gst_hal_get_audio_src (const gchar * udi)
{
GstElement *ret = gst_hal_render_bin_from_udi (udi);
if (!ret) {
ret = gst_element_factory_make (DEFAULT_AUDIOSRC, NULL);
if (!ret)
g_warning ("No Hal default audio src key and %s doesn't work",
DEFAULT_AUDIOSRC);
}
return ret;
}

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/* GStreamer
* Copyright (C) <2002> Thomas Vander Stichele <thomas@apestaart.org>
* Copyright (C) <2006> Jürg Billeter <j@bitron.ch>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef GST_HAL_H
#define GST_HAL_H
/*
* this library handles interaction with Hal
*/
#include <gst/gst.h>
#include <dbus/dbus.h>
#include <libhal.h>
G_BEGIN_DECLS
gchar * gst_hal_get_string (const gchar *udi);
GstElement * gst_hal_render_bin_from_udi (const gchar *udi);
GstElement * gst_hal_render_bin_from_description (const gchar *description);
GstElement * gst_hal_get_audio_sink (const gchar *udi);
GstElement * gst_hal_get_audio_src (const gchar *udi);
G_END_DECLS
#endif /* GST_HAL_H */