gstreamer/sys/oss/gstossmixerelement.c

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/* OSS mixer interface element.
* Copyright (C) 2005 Andrew Vander Wingo <wingo@pobox.com>
*
* 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.
*/
sys/oss/: Document OSS elements; add gtk-doc blurb with 'Since 0.10.5' for ossmixer's new device property. Original commit message from CVS: * sys/oss/gstossmixerelement.c: (gst_oss_mixer_element_class_init): * sys/oss/gstosssink.c: * sys/oss/gstosssrc.c: Document OSS elements; add gtk-doc blurb with 'Since 0.10.5' for ossmixer's new device property. * docs/plugins/gst-plugins-good-plugins-docs.sgml: * docs/plugins/gst-plugins-good-plugins-sections.txt: Add docs for OSS elements. * docs/plugins/inspect/plugin-aasink.xml: * docs/plugins/inspect/plugin-alaw.xml: * docs/plugins/inspect/plugin-alpha.xml: * docs/plugins/inspect/plugin-alphacolor.xml: * docs/plugins/inspect/plugin-annodex.xml: * docs/plugins/inspect/plugin-apetag.xml: * docs/plugins/inspect/plugin-auparse.xml: * docs/plugins/inspect/plugin-autodetect.xml: * docs/plugins/inspect/plugin-avi.xml: * docs/plugins/inspect/plugin-cacasink.xml: * docs/plugins/inspect/plugin-cairo.xml: * docs/plugins/inspect/plugin-cdio.xml: * docs/plugins/inspect/plugin-cutter.xml: * docs/plugins/inspect/plugin-debug.xml: * docs/plugins/inspect/plugin-dv.xml: * docs/plugins/inspect/plugin-efence.xml: * docs/plugins/inspect/plugin-effectv.xml: * docs/plugins/inspect/plugin-esdsink.xml: * docs/plugins/inspect/plugin-flac.xml: * docs/plugins/inspect/plugin-flxdec.xml: * docs/plugins/inspect/plugin-gconfelements.xml: * docs/plugins/inspect/plugin-gdkpixbuf.xml: * docs/plugins/inspect/plugin-goom.xml: * docs/plugins/inspect/plugin-halelements.xml: * docs/plugins/inspect/plugin-icydemux.xml: * docs/plugins/inspect/plugin-id3demux.xml: * docs/plugins/inspect/plugin-jpeg.xml: * docs/plugins/inspect/plugin-level.xml: * docs/plugins/inspect/plugin-matroska.xml: * docs/plugins/inspect/plugin-mulaw.xml: * docs/plugins/inspect/plugin-multipart.xml: * docs/plugins/inspect/plugin-navigationtest.xml: * docs/plugins/inspect/plugin-ossaudio.xml: * docs/plugins/inspect/plugin-png.xml: * docs/plugins/inspect/plugin-rtp.xml: * docs/plugins/inspect/plugin-rtsp.xml: * docs/plugins/inspect/plugin-shout2send.xml: * docs/plugins/inspect/plugin-smpte.xml: * docs/plugins/inspect/plugin-speex.xml: * docs/plugins/inspect/plugin-taglib.xml: * docs/plugins/inspect/plugin-udp.xml: * docs/plugins/inspect/plugin-videobalance.xml: * docs/plugins/inspect/plugin-videobox.xml: * docs/plugins/inspect/plugin-videoflip.xml: * docs/plugins/inspect/plugin-videomixer.xml: * docs/plugins/inspect/plugin-wavenc.xml: * docs/plugins/inspect/plugin-wavparse.xml: * docs/plugins/inspect/plugin-ximagesrc.xml: Update to CVS version.
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/**
* SECTION:element-ossmixer
*
* This element lets you adjust sound input and output levels with the
* Open Sound System (OSS). It supports the #GstMixer interface, which can be
sys/oss/: Document OSS elements; add gtk-doc blurb with 'Since 0.10.5' for ossmixer's new device property. Original commit message from CVS: * sys/oss/gstossmixerelement.c: (gst_oss_mixer_element_class_init): * sys/oss/gstosssink.c: * sys/oss/gstosssrc.c: Document OSS elements; add gtk-doc blurb with 'Since 0.10.5' for ossmixer's new device property. * docs/plugins/gst-plugins-good-plugins-docs.sgml: * docs/plugins/gst-plugins-good-plugins-sections.txt: Add docs for OSS elements. * docs/plugins/inspect/plugin-aasink.xml: * docs/plugins/inspect/plugin-alaw.xml: * docs/plugins/inspect/plugin-alpha.xml: * docs/plugins/inspect/plugin-alphacolor.xml: * docs/plugins/inspect/plugin-annodex.xml: * docs/plugins/inspect/plugin-apetag.xml: * docs/plugins/inspect/plugin-auparse.xml: * docs/plugins/inspect/plugin-autodetect.xml: * docs/plugins/inspect/plugin-avi.xml: * docs/plugins/inspect/plugin-cacasink.xml: * docs/plugins/inspect/plugin-cairo.xml: * docs/plugins/inspect/plugin-cdio.xml: * docs/plugins/inspect/plugin-cutter.xml: * docs/plugins/inspect/plugin-debug.xml: * docs/plugins/inspect/plugin-dv.xml: * docs/plugins/inspect/plugin-efence.xml: * docs/plugins/inspect/plugin-effectv.xml: * docs/plugins/inspect/plugin-esdsink.xml: * docs/plugins/inspect/plugin-flac.xml: * docs/plugins/inspect/plugin-flxdec.xml: * docs/plugins/inspect/plugin-gconfelements.xml: * docs/plugins/inspect/plugin-gdkpixbuf.xml: * docs/plugins/inspect/plugin-goom.xml: * docs/plugins/inspect/plugin-halelements.xml: * docs/plugins/inspect/plugin-icydemux.xml: * docs/plugins/inspect/plugin-id3demux.xml: * docs/plugins/inspect/plugin-jpeg.xml: * docs/plugins/inspect/plugin-level.xml: * docs/plugins/inspect/plugin-matroska.xml: * docs/plugins/inspect/plugin-mulaw.xml: * docs/plugins/inspect/plugin-multipart.xml: * docs/plugins/inspect/plugin-navigationtest.xml: * docs/plugins/inspect/plugin-ossaudio.xml: * docs/plugins/inspect/plugin-png.xml: * docs/plugins/inspect/plugin-rtp.xml: * docs/plugins/inspect/plugin-rtsp.xml: * docs/plugins/inspect/plugin-shout2send.xml: * docs/plugins/inspect/plugin-smpte.xml: * docs/plugins/inspect/plugin-speex.xml: * docs/plugins/inspect/plugin-taglib.xml: * docs/plugins/inspect/plugin-udp.xml: * docs/plugins/inspect/plugin-videobalance.xml: * docs/plugins/inspect/plugin-videobox.xml: * docs/plugins/inspect/plugin-videoflip.xml: * docs/plugins/inspect/plugin-videomixer.xml: * docs/plugins/inspect/plugin-wavenc.xml: * docs/plugins/inspect/plugin-wavparse.xml: * docs/plugins/inspect/plugin-ximagesrc.xml: Update to CVS version.
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* used to obtain a list of available mixer tracks. Set the mixer element to
* READY state before using the #GstMixer interface on it.
*
* <refsect2>
sys/oss/: Document OSS elements; add gtk-doc blurb with 'Since 0.10.5' for ossmixer's new device property. Original commit message from CVS: * sys/oss/gstossmixerelement.c: (gst_oss_mixer_element_class_init): * sys/oss/gstosssink.c: * sys/oss/gstosssrc.c: Document OSS elements; add gtk-doc blurb with 'Since 0.10.5' for ossmixer's new device property. * docs/plugins/gst-plugins-good-plugins-docs.sgml: * docs/plugins/gst-plugins-good-plugins-sections.txt: Add docs for OSS elements. * docs/plugins/inspect/plugin-aasink.xml: * docs/plugins/inspect/plugin-alaw.xml: * docs/plugins/inspect/plugin-alpha.xml: * docs/plugins/inspect/plugin-alphacolor.xml: * docs/plugins/inspect/plugin-annodex.xml: * docs/plugins/inspect/plugin-apetag.xml: * docs/plugins/inspect/plugin-auparse.xml: * docs/plugins/inspect/plugin-autodetect.xml: * docs/plugins/inspect/plugin-avi.xml: * docs/plugins/inspect/plugin-cacasink.xml: * docs/plugins/inspect/plugin-cairo.xml: * docs/plugins/inspect/plugin-cdio.xml: * docs/plugins/inspect/plugin-cutter.xml: * docs/plugins/inspect/plugin-debug.xml: * docs/plugins/inspect/plugin-dv.xml: * docs/plugins/inspect/plugin-efence.xml: * docs/plugins/inspect/plugin-effectv.xml: * docs/plugins/inspect/plugin-esdsink.xml: * docs/plugins/inspect/plugin-flac.xml: * docs/plugins/inspect/plugin-flxdec.xml: * docs/plugins/inspect/plugin-gconfelements.xml: * docs/plugins/inspect/plugin-gdkpixbuf.xml: * docs/plugins/inspect/plugin-goom.xml: * docs/plugins/inspect/plugin-halelements.xml: * docs/plugins/inspect/plugin-icydemux.xml: * docs/plugins/inspect/plugin-id3demux.xml: * docs/plugins/inspect/plugin-jpeg.xml: * docs/plugins/inspect/plugin-level.xml: * docs/plugins/inspect/plugin-matroska.xml: * docs/plugins/inspect/plugin-mulaw.xml: * docs/plugins/inspect/plugin-multipart.xml: * docs/plugins/inspect/plugin-navigationtest.xml: * docs/plugins/inspect/plugin-ossaudio.xml: * docs/plugins/inspect/plugin-png.xml: * docs/plugins/inspect/plugin-rtp.xml: * docs/plugins/inspect/plugin-rtsp.xml: * docs/plugins/inspect/plugin-shout2send.xml: * docs/plugins/inspect/plugin-smpte.xml: * docs/plugins/inspect/plugin-speex.xml: * docs/plugins/inspect/plugin-taglib.xml: * docs/plugins/inspect/plugin-udp.xml: * docs/plugins/inspect/plugin-videobalance.xml: * docs/plugins/inspect/plugin-videobox.xml: * docs/plugins/inspect/plugin-videoflip.xml: * docs/plugins/inspect/plugin-videomixer.xml: * docs/plugins/inspect/plugin-wavenc.xml: * docs/plugins/inspect/plugin-wavparse.xml: * docs/plugins/inspect/plugin-ximagesrc.xml: Update to CVS version.
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* <title>Example pipelines</title>
* <para>
* ossmixer can't be used in a sensible way in gst-launch.
* </para>
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstossmixerelement.h"
GST_DEBUG_CATEGORY_EXTERN (oss_debug);
#define GST_CAT_DEFAULT oss_debug
#define DEFAULT_DEVICE "/dev/mixer"
#define DEFAULT_DEVICE_NAME NULL
enum
{
PROP_0,
PROP_DEVICE,
PROP_DEVICE_NAME
};
Define GstElementDetails as const and also static (when defined as global) Original commit message from CVS: * ext/aalib/gstaasink.c: * ext/annodex/gstcmmldec.c: * ext/annodex/gstcmmlenc.c: * ext/cairo/gsttextoverlay.c: * ext/cairo/gsttimeoverlay.c: * ext/cdio/gstcdiocddasrc.c: * ext/dv/gstdvdec.c: * ext/dv/gstdvdemux.c: * ext/esd/esdmon.c: * ext/esd/esdsink.c: * ext/flac/gstflacenc.c: * ext/flac/gstflactag.c: * ext/gconf/gstgconfaudiosink.c: (gst_gconf_audio_sink_base_init): * ext/gconf/gstgconfaudiosrc.c: (gst_gconf_audio_src_base_init): * ext/gconf/gstgconfvideosink.c: (gst_gconf_video_sink_base_init): * ext/gconf/gstgconfvideosrc.c: (gst_gconf_video_src_base_init): * ext/gdk_pixbuf/pixbufscale.c: * ext/hal/gsthalaudiosink.c: (gst_hal_audio_sink_base_init): * ext/hal/gsthalaudiosrc.c: (gst_hal_audio_src_base_init): * ext/jpeg/gstjpegdec.c: * ext/jpeg/gstjpegenc.c: * ext/jpeg/gstsmokedec.c: * ext/jpeg/gstsmokeenc.c: * ext/libcaca/gstcacasink.c: * ext/libmng/gstmngdec.c: * ext/libmng/gstmngenc.c: * ext/libpng/gstpngdec.c: * ext/libpng/gstpngenc.c: * ext/mikmod/gstmikmod.c: * ext/raw1394/gstdv1394src.c: * ext/shout2/gstshout2.c: (gst_shout2send_init): * ext/shout2/gstshout2.h: * ext/speex/gstspeexdec.c: * ext/speex/gstspeexenc.c: * gst/alpha/gstalpha.c: * gst/alpha/gstalphacolor.c: * gst/apetag/gstapedemux.c: * gst/auparse/gstauparse.c: * gst/autodetect/gstautoaudiosink.c: (gst_auto_audio_sink_base_init): * gst/autodetect/gstautovideosink.c: (gst_auto_video_sink_base_init): * gst/avi/gstavidemux.c: (gst_avi_demux_base_init): * gst/avi/gstavimux.c: (gst_avimux_base_init): * gst/cutter/gstcutter.c: * gst/debug/breakmydata.c: * gst/debug/efence.c: * gst/debug/gstnavigationtest.c: * gst/debug/gstnavseek.c: * gst/debug/negotiation.c: * gst/debug/progressreport.c: * gst/debug/testplugin.c: * gst/effectv/gstaging.c: * gst/effectv/gstdice.c: * gst/effectv/gstedge.c: * gst/effectv/gstquark.c: * gst/effectv/gstrev.c: * gst/effectv/gstshagadelic.c: * gst/effectv/gstvertigo.c: * gst/effectv/gstwarp.c: * gst/flx/gstflxdec.c: * gst/goom/gstgoom.c: * gst/icydemux/gsticydemux.c: * gst/id3demux/gstid3demux.c: * gst/interleave/deinterleave.c: * gst/interleave/interleave.c: * gst/law/alaw-decode.c: (gst_alawdec_base_init): * gst/law/alaw-encode.c: (gst_alawenc_base_init): * gst/law/mulaw-decode.c: (gst_mulawdec_base_init): * gst/law/mulaw-encode.c: (gst_mulawenc_base_init): * gst/level/gstlevel.c: * gst/matroska/matroska-demux.c: (gst_matroska_demux_base_init): * gst/matroska/matroska-mux.c: (gst_matroska_mux_base_init): * gst/median/gstmedian.c: * gst/monoscope/gstmonoscope.c: * gst/multipart/multipartdemux.c: * gst/multipart/multipartmux.c: * gst/oldcore/gstaggregator.c: * gst/oldcore/gstfdsink.c: * gst/oldcore/gstmd5sink.c: * gst/oldcore/gstmultifilesrc.c: * gst/oldcore/gstpipefilter.c: * gst/oldcore/gstshaper.c: * gst/oldcore/gststatistics.c: * gst/rtp/gstasteriskh263.c: * gst/rtp/gstrtpL16depay.c: * gst/rtp/gstrtpL16pay.c: * gst/rtp/gstrtpamrdepay.c: * gst/rtp/gstrtpamrpay.c: * gst/rtp/gstrtpdepay.c: * gst/rtp/gstrtpgsmpay.c: * gst/rtp/gstrtph263pay.c: * gst/rtp/gstrtph263pdepay.c: * gst/rtp/gstrtph263ppay.c: * gst/rtp/gstrtpilbcdepay.c: * gst/rtp/gstrtpmp4gpay.c: * gst/rtp/gstrtpmp4vdepay.c: * gst/rtp/gstrtpmp4vpay.c: * gst/rtp/gstrtpmpadepay.c: * gst/rtp/gstrtpmpapay.c: * gst/rtp/gstrtppcmadepay.c: * gst/rtp/gstrtppcmapay.c: * gst/rtp/gstrtppcmudepay.c: * gst/rtp/gstrtppcmupay.c: * gst/rtp/gstrtpspeexdepay.c: * gst/rtp/gstrtpspeexpay.c: * gst/rtsp/gstrtpdec.c: * gst/rtsp/gstrtspsrc.c: * gst/smpte/gstsmpte.c: * gst/udp/gstdynudpsink.c: * gst/udp/gstmultiudpsink.c: * gst/udp/gstudpsink.c: * gst/udp/gstudpsrc.c: * gst/videobox/gstvideobox.c: * gst/videofilter/gstgamma.c: (gst_gamma_base_init): * gst/videofilter/gstvideobalance.c: * gst/videofilter/gstvideoflip.c: * gst/videofilter/gstvideotemplate.c: (gst_videotemplate_base_init): * gst/videomixer/videomixer.c: * gst/wavparse/gstwavparse.c: (gst_wavparse_base_init), (gst_wavparse_class_init), (gst_wavparse_dispose), (gst_wavparse_reset), (gst_wavparse_init), (gst_wavparse_perform_seek), (gst_wavparse_peek_chunk_info), (gst_wavparse_peek_chunk), (gst_wavparse_stream_headers), (gst_wavparse_parse_stream_init), (gst_wavparse_send_event), (gst_wavparse_add_src_pad), (gst_wavparse_stream_data), (gst_wavparse_chain), (gst_wavparse_srcpad_event), (gst_wavparse_sink_activate), (gst_wavparse_sink_activate_pull), (gst_wavparse_change_state): * gst/wavparse/gstwavparse.h: * sys/oss/gstossmixerelement.c: * sys/oss/gstosssink.c: * sys/oss/gstosssrc.c: * sys/osxaudio/gstosxaudioelement.c: * sys/osxaudio/gstosxaudiosink.c: * sys/osxaudio/gstosxaudiosrc.c: * sys/sunaudio/gstsunaudiomixer.c: * sys/sunaudio/gstsunaudiosink.c: Define GstElementDetails as const and also static (when defined as global)
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static const GstElementDetails gst_oss_mixer_element_details =
GST_ELEMENT_DETAILS ("OSS Mixer",
"Generic/Audio",
"Control sound input and output levels with OSS",
"Andrew Vander Wingo <wingo@pobox.com>");
GST_BOILERPLATE_WITH_INTERFACE (GstOssMixerElement, gst_oss_mixer_element,
GstElement, GST_TYPE_ELEMENT, GstMixer, GST_TYPE_MIXER,
gst_oss_mixer_element);
GST_IMPLEMENT_OSS_MIXER_METHODS (GstOssMixerElement, gst_oss_mixer_element);
static GstStateChangeReturn gst_oss_mixer_element_change_state (GstElement *
element, GstStateChange transition);
static void gst_oss_mixer_element_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec);
static void gst_oss_mixer_element_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static void gst_oss_mixer_element_finalize (GObject * object);
static void
gst_oss_mixer_element_base_init (gpointer klass)
{
gst_element_class_set_details (GST_ELEMENT_CLASS (klass),
&gst_oss_mixer_element_details);
}
static void
gst_oss_mixer_element_class_init (GstOssMixerElementClass * klass)
{
GstElementClass *element_class;
GObjectClass *gobject_class;
element_class = (GstElementClass *) klass;
gobject_class = (GObjectClass *) klass;
gobject_class->finalize = gst_oss_mixer_element_finalize;
gobject_class->set_property = gst_oss_mixer_element_set_property;
gobject_class->get_property = gst_oss_mixer_element_get_property;
sys/oss/: Document OSS elements; add gtk-doc blurb with 'Since 0.10.5' for ossmixer's new device property. Original commit message from CVS: * sys/oss/gstossmixerelement.c: (gst_oss_mixer_element_class_init): * sys/oss/gstosssink.c: * sys/oss/gstosssrc.c: Document OSS elements; add gtk-doc blurb with 'Since 0.10.5' for ossmixer's new device property. * docs/plugins/gst-plugins-good-plugins-docs.sgml: * docs/plugins/gst-plugins-good-plugins-sections.txt: Add docs for OSS elements. * docs/plugins/inspect/plugin-aasink.xml: * docs/plugins/inspect/plugin-alaw.xml: * docs/plugins/inspect/plugin-alpha.xml: * docs/plugins/inspect/plugin-alphacolor.xml: * docs/plugins/inspect/plugin-annodex.xml: * docs/plugins/inspect/plugin-apetag.xml: * docs/plugins/inspect/plugin-auparse.xml: * docs/plugins/inspect/plugin-autodetect.xml: * docs/plugins/inspect/plugin-avi.xml: * docs/plugins/inspect/plugin-cacasink.xml: * docs/plugins/inspect/plugin-cairo.xml: * docs/plugins/inspect/plugin-cdio.xml: * docs/plugins/inspect/plugin-cutter.xml: * docs/plugins/inspect/plugin-debug.xml: * docs/plugins/inspect/plugin-dv.xml: * docs/plugins/inspect/plugin-efence.xml: * docs/plugins/inspect/plugin-effectv.xml: * docs/plugins/inspect/plugin-esdsink.xml: * docs/plugins/inspect/plugin-flac.xml: * docs/plugins/inspect/plugin-flxdec.xml: * docs/plugins/inspect/plugin-gconfelements.xml: * docs/plugins/inspect/plugin-gdkpixbuf.xml: * docs/plugins/inspect/plugin-goom.xml: * docs/plugins/inspect/plugin-halelements.xml: * docs/plugins/inspect/plugin-icydemux.xml: * docs/plugins/inspect/plugin-id3demux.xml: * docs/plugins/inspect/plugin-jpeg.xml: * docs/plugins/inspect/plugin-level.xml: * docs/plugins/inspect/plugin-matroska.xml: * docs/plugins/inspect/plugin-mulaw.xml: * docs/plugins/inspect/plugin-multipart.xml: * docs/plugins/inspect/plugin-navigationtest.xml: * docs/plugins/inspect/plugin-ossaudio.xml: * docs/plugins/inspect/plugin-png.xml: * docs/plugins/inspect/plugin-rtp.xml: * docs/plugins/inspect/plugin-rtsp.xml: * docs/plugins/inspect/plugin-shout2send.xml: * docs/plugins/inspect/plugin-smpte.xml: * docs/plugins/inspect/plugin-speex.xml: * docs/plugins/inspect/plugin-taglib.xml: * docs/plugins/inspect/plugin-udp.xml: * docs/plugins/inspect/plugin-videobalance.xml: * docs/plugins/inspect/plugin-videobox.xml: * docs/plugins/inspect/plugin-videoflip.xml: * docs/plugins/inspect/plugin-videomixer.xml: * docs/plugins/inspect/plugin-wavenc.xml: * docs/plugins/inspect/plugin-wavparse.xml: * docs/plugins/inspect/plugin-ximagesrc.xml: Update to CVS version.
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/**
* GstOssMixerElement:device
*
* OSS mixer device (usually /dev/mixer)
*
* Since: 0.10.5
**/
g_object_class_install_property (gobject_class, PROP_DEVICE,
g_param_spec_string ("device", "Device",
"OSS mixer device (usually /dev/mixer)", DEFAULT_DEVICE,
G_PARAM_READWRITE));
g_object_class_install_property (gobject_class, PROP_DEVICE_NAME,
g_param_spec_string ("device-name", "Device name",
"Human-readable name of the sound device", DEFAULT_DEVICE_NAME,
G_PARAM_READABLE));
element_class->change_state =
GST_DEBUG_FUNCPTR (gst_oss_mixer_element_change_state);
}
static void
gst_oss_mixer_element_finalize (GObject * obj)
{
GstOssMixerElement *this = GST_OSS_MIXER_ELEMENT (obj);
g_free (this->device);
G_OBJECT_CLASS (parent_class)->finalize (obj);
}
static void
gst_oss_mixer_element_init (GstOssMixerElement * this,
GstOssMixerElementClass * g_class)
{
this->mixer = NULL;
this->device = g_strdup (DEFAULT_DEVICE);
}
static void
gst_oss_mixer_element_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstOssMixerElement *this = GST_OSS_MIXER_ELEMENT (object);
switch (prop_id) {
case PROP_DEVICE:
g_free (this->device);
this->device = g_value_dup_string (value);
/* make sure we never set NULL */
if (this->device == NULL) {
this->device = g_strdup (DEFAULT_DEVICE);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_oss_mixer_element_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstOssMixerElement *this = GST_OSS_MIXER_ELEMENT (object);
switch (prop_id) {
case PROP_DEVICE:
g_value_set_string (value, this->device);
break;
case PROP_DEVICE_NAME:
if (this->mixer) {
g_value_set_string (value, this->mixer->cardname);
} else {
g_value_set_string (value, NULL);
}
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
gst_oss_mixer_element_change_state (GstElement * element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
GstOssMixerElement *this = GST_OSS_MIXER_ELEMENT (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!this->mixer) {
this->mixer = gst_ossmixer_new (this->device, GST_OSS_MIXER_ALL);
if (!this->mixer)
goto open_failed;
}
break;
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
if (ret == GST_STATE_CHANGE_FAILURE)
return ret;
switch (transition) {
case GST_STATE_CHANGE_READY_TO_NULL:
if (this->mixer) {
gst_ossmixer_free (this->mixer);
this->mixer = NULL;
}
break;
default:
break;
}
return ret;
/* ERRORS */
open_failed:
{
GST_ELEMENT_ERROR (element, RESOURCE, OPEN_READ_WRITE, (NULL),
("Failed to open oss mixer device '%s'", this->device));
return GST_STATE_CHANGE_FAILURE;
}
}