diff options
Diffstat (limited to 'gst/autodetect')
| -rw-r--r-- | gst/autodetect/Makefile.am | 33 | ||||
| -rwxr-xr-x | gst/autodetect/Makefile.in | 953 | ||||
| -rwxr-xr-x | gst/autodetect/gstautoaudiosink.c | 144 | ||||
| -rwxr-xr-x | gst/autodetect/gstautoaudiosink.h | 55 | ||||
| -rwxr-xr-x | gst/autodetect/gstautoaudiosrc.c | 96 | ||||
| -rwxr-xr-x | gst/autodetect/gstautoaudiosrc.h | 54 | ||||
| -rwxr-xr-x | gst/autodetect/gstautodetect.c | 507 | ||||
| -rwxr-xr-x | gst/autodetect/gstautodetect.h | 73 | ||||
| -rwxr-xr-x | gst/autodetect/gstautovideosink.c | 144 | ||||
| -rwxr-xr-x | gst/autodetect/gstautovideosink.h | 55 | ||||
| -rwxr-xr-x | gst/autodetect/gstautovideosrc.c | 95 | ||||
| -rwxr-xr-x | gst/autodetect/gstautovideosrc.h | 54 |
12 files changed, 2263 insertions, 0 deletions
diff --git a/gst/autodetect/Makefile.am b/gst/autodetect/Makefile.am new file mode 100644 index 0000000..f670147 --- /dev/null +++ b/gst/autodetect/Makefile.am @@ -0,0 +1,33 @@ +plugin_LTLIBRARIES = libgstautodetect.la + +libgstautodetect_la_SOURCES = \ + gstautoaudiosink.c \ + gstautoaudiosrc.c \ + gstautodetect.c \ + gstautovideosink.c \ + gstautovideosrc.c +libgstautodetect_la_CFLAGS = $(GST_CFLAGS) +libgstautodetect_la_LIBADD = $(GST_LIBS) +libgstautodetect_la_LDFLAGS = $(GST_PLUGIN_LDFLAGS) +libgstautodetect_la_LIBTOOLFLAGS = $(GST_PLUGIN_LIBTOOLFLAGS) + +noinst_HEADERS = \ + gstautoaudiosink.h \ + gstautoaudiosrc.h \ + gstautodetect.h \ + gstautovideosink.h \ + gstautovideosrc.h + +Android.mk: Makefile.am $(BUILT_SOURCES) + androgenizer \ + -:PROJECT libgstautodetect -:SHARED libgstautodetect \ + -:TAGS eng debug \ + -:REL_TOP $(top_srcdir) -:ABS_TOP $(abs_top_srcdir) \ + -:SOURCES $(libgstautodetect_la_SOURCES) \ + -:CFLAGS $(DEFS) $(DEFAULT_INCLUDES) $(libgstautodetect_la_CFLAGS) \ + -:LDFLAGS $(libgstautodetect_la_LDFLAGS) \ + $(libgstautodetect_la_LIBADD) \ + -ldl \ + -:PASSTHROUGH LOCAL_ARM_MODE:=arm \ + LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \ + > $@ diff --git a/gst/autodetect/Makefile.in b/gst/autodetect/Makefile.in new file mode 100755 index 0000000..59821f3 --- /dev/null +++ b/gst/autodetect/Makefile.in @@ -0,0 +1,953 @@ +# Makefile.in generated by automake 1.14.1 from Makefile.am. +# @configure_input@ + +# Copyright (C) 1994-2013 Free Software Foundation, Inc. + +# This Makefile.in is free software; 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$(DEFAULT_INCLUDES) $(libgstautodetect_la_CFLAGS) \ + -:LDFLAGS $(libgstautodetect_la_LDFLAGS) \ + $(libgstautodetect_la_LIBADD) \ + -ldl \ + -:PASSTHROUGH LOCAL_ARM_MODE:=arm \ + LOCAL_MODULE_PATH:='$$(TARGET_OUT)/lib/gstreamer-0.10' \ + > $@ + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/gst/autodetect/gstautoaudiosink.c b/gst/autodetect/gstautoaudiosink.c new file mode 100755 index 0000000..1dfc4ce --- /dev/null +++ b/gst/autodetect/gstautoaudiosink.c @@ -0,0 +1,144 @@ +/* GStreamer + * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net> + * (c) 2006 Jan Schmidt <thaytan@noraisin.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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +/** + * SECTION:element-autoaudiosink + * @see_also: autovideosink, alsasink, osssink + * + * autoaudiosink is an audio sink that automatically detects an appropriate + * audio sink to use. It does so by scanning the registry for all elements + * that have <quote>Sink</quote> and <quote>Audio</quote> in the class field + * of their element information, and also have a non-zero autoplugging rank. + * + * <refsect2> + * <title>Example launch line</title> + * |[ + * gst-launch-1.0 -v -m audiotestsrc ! audioconvert ! audioresample ! autoaudiosink + * ]| + * </refsect2> + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gstautoaudiosink.h" + +#define DEFAULT_TS_OFFSET 0 + +/* Properties */ +enum +{ + PROP_0, + PROP_TS_OFFSET, +}; + +static void gst_auto_audio_sink_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_auto_audio_sink_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); +static void gst_auto_audio_sink_configure (GstAutoDetect * autodetect, + GstElement * kid); + +G_DEFINE_TYPE (GstAutoAudioSink, gst_auto_audio_sink, GST_TYPE_AUTO_DETECT); + +static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + +static void +gst_auto_audio_sink_class_init (GstAutoAudioSinkClass * klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + GstElementClass *eklass = GST_ELEMENT_CLASS (klass); + GstAutoDetectClass *aklass = GST_AUTO_DETECT_CLASS (klass); + + gobject_class->set_property = gst_auto_audio_sink_set_property; + gobject_class->get_property = gst_auto_audio_sink_get_property; + + aklass->configure = gst_auto_audio_sink_configure; + + g_object_class_install_property (gobject_class, PROP_TS_OFFSET, + g_param_spec_int64 ("ts-offset", "TS Offset", + "Timestamp offset in nanoseconds", G_MININT64, G_MAXINT64, + DEFAULT_TS_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + + gst_element_class_add_pad_template (eklass, + gst_static_pad_template_get (&sink_template)); + gst_element_class_set_static_metadata (eklass, "Auto audio sink", + "Sink/Audio", + "Wrapper audio sink for automatically detected audio sink", + "Jan Schmidt <thaytan@noraisin.net>"); +} + +static void +gst_auto_audio_sink_init (GstAutoAudioSink * sink) +{ + GstAutoDetect *autodetect = GST_AUTO_DETECT (sink); + + autodetect->media_klass = "Audio"; + autodetect->flag = GST_ELEMENT_FLAG_SINK; + + sink->ts_offset = DEFAULT_TS_OFFSET; +} + +static void +gst_auto_audio_sink_configure (GstAutoDetect * autodetect, GstElement * kid) +{ + GstAutoAudioSink *self = GST_AUTO_AUDIO_SINK (autodetect); + + g_object_set (G_OBJECT (kid), "ts-offset", self->ts_offset, NULL); +} + +static void +gst_auto_audio_sink_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstAutoAudioSink *sink = GST_AUTO_AUDIO_SINK (object); + GstAutoDetect *autodetect = (GstAutoDetect *) sink; + + switch (prop_id) { + case PROP_TS_OFFSET: + sink->ts_offset = g_value_get_int64 (value); + if (autodetect->kid) + g_object_set_property (G_OBJECT (autodetect->kid), pspec->name, value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_auto_audio_sink_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstAutoAudioSink *sink = GST_AUTO_AUDIO_SINK (object); + + switch (prop_id) { + case PROP_TS_OFFSET: + g_value_set_int64 (value, sink->ts_offset); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} diff --git a/gst/autodetect/gstautoaudiosink.h b/gst/autodetect/gstautoaudiosink.h new file mode 100755 index 0000000..24a0b25 --- /dev/null +++ b/gst/autodetect/gstautoaudiosink.h @@ -0,0 +1,55 @@ +/* GStreamer + * (c) 2005 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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __GST_AUTO_AUDIO_SINK_H__ +#define __GST_AUTO_AUDIO_SINK_H__ + +#include <gst/gst.h> +#include "gstautodetect.h" + +G_BEGIN_DECLS + +#define GST_TYPE_AUTO_AUDIO_SINK \ + (gst_auto_audio_sink_get_type ()) +#define GST_AUTO_AUDIO_SINK(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_AUDIO_SINK, \ + GstAutoAudioSink)) +#define GST_AUTO_AUDIO_SINK_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_AUDIO_SINK, \ + GstAutoAudioSinkClass)) +#define GST_IS_AUTO_AUDIO_SINK(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_AUDIO_SINK)) +#define GST_IS_AUTO_AUDIO_SINK_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_AUDIO_SINK)) + +typedef struct _GstAutoAudioSink { + GstAutoDetect parent; + + GstClockTimeDiff ts_offset; +} GstAutoAudioSink; + +typedef struct _GstAutoAudioSinkClass { + GstAutoDetectClass parent_class; +} GstAutoAudioSinkClass; + +GType gst_auto_audio_sink_get_type (void); + +G_END_DECLS + +#endif /* __GST_AUTO_AUDIO_SINK_H__ */ diff --git a/gst/autodetect/gstautoaudiosrc.c b/gst/autodetect/gstautoaudiosrc.c new file mode 100755 index 0000000..2859386 --- /dev/null +++ b/gst/autodetect/gstautoaudiosrc.c @@ -0,0 +1,96 @@ +/* GStreamer + * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net> + * (c) 2006 Jan Schmidt <thaytan@noraisin.net> + * (c) 2008 Stefan Kost <ensonic@users.sf.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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +/** + * SECTION:element-autoaudiosrc + * @see_also: autovideosrc, alsasrc, osssrc + * + * autoaudiosrc is an audio source that automatically detects an appropriate + * audio source to use. It does so by scanning the registry for all elements + * that have <quote>Source</quote> and <quote>Audio</quote> in the class field + * of their element information, and also have a non-zero autoplugging rank. + * + * <refsect2> + * <title>Example launch line</title> + * |[ + * gst-launch-1.0 -v -m autoaudiosrc ! audioconvert ! audioresample ! autoaudiosink + * ]| + * </refsect2> + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gstautoaudiosrc.h" + +G_DEFINE_TYPE (GstAutoAudioSrc, gst_auto_audio_src, GST_TYPE_AUTO_DETECT); + +static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + +static GstElement * +gst_auto_audio_src_create_fake_element (GstAutoDetect * autodetect) +{ + GstElement *fake; + + fake = gst_element_factory_make ("audiotestsrc", "fake-auto-audio-src"); + if (fake != NULL) { + g_object_set (fake, "is-live", TRUE, NULL); + gst_util_set_object_arg (G_OBJECT (fake), "wave", "silence"); + } else { + GST_ELEMENT_ERROR (autodetect, RESOURCE, NOT_FOUND, + ("Failed to find usable audio source element."), + ("Failed to find a usable audio source and couldn't create an audio" + "testsrc as fallback either, check your GStreamer installation.")); + /* This will error out with not-negotiated.. */ + fake = gst_element_factory_make ("fakesrc", "fake-auto-audio-src"); + } + return fake; +} + +static void +gst_auto_audio_src_class_init (GstAutoAudioSrcClass * klass) +{ + GstAutoDetectClass *autoclass = GST_AUTO_DETECT_CLASS (klass); + GstElementClass *eklass = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_pad_template (eklass, + gst_static_pad_template_get (&src_template)); + gst_element_class_set_static_metadata (eklass, "Auto audio source", + "Source/Audio", + "Wrapper audio source for automatically detected audio source", + "Jan Schmidt <thaytan@noraisin.net>, " + "Stefan Kost <ensonic@users.sf.net>"); + + autoclass->create_fake_element = gst_auto_audio_src_create_fake_element; +} + +static void +gst_auto_audio_src_init (GstAutoAudioSrc * src) +{ + GstAutoDetect *autodetect = GST_AUTO_DETECT (src); + + autodetect->media_klass = "Audio"; + autodetect->flag = GST_ELEMENT_FLAG_SOURCE; +} diff --git a/gst/autodetect/gstautoaudiosrc.h b/gst/autodetect/gstautoaudiosrc.h new file mode 100755 index 0000000..427cdae --- /dev/null +++ b/gst/autodetect/gstautoaudiosrc.h @@ -0,0 +1,54 @@ +/* GStreamer + * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net> + * (c) 2008 Stefan Kost <ensonic@users.sf.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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __GST_AUTO_AUDIO_SRC_H__ +#define __GST_AUTO_AUDIO_SRC_H__ + +#include <gst/gst.h> +#include "gstautodetect.h" + +G_BEGIN_DECLS + +#define GST_TYPE_AUTO_AUDIO_SRC \ + (gst_auto_audio_src_get_type ()) +#define GST_AUTO_AUDIO_SRC(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_AUDIO_SRC, \ + GstAutoAudioSrc)) +#define GST_AUTO_AUDIO_SRC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_AUDIO_SRC, \ + GstAutoAudioSrcClass)) +#define GST_IS_AUTO_AUDIO_SRC(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_AUDIO_SRC)) +#define GST_IS_AUTO_AUDIO_SRC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_AUDIO_SRC)) + +typedef struct _GstAutoAudioSrc { + GstAutoDetect parent; +} GstAutoAudioSrc; + +typedef struct _GstAutoAudioSrcClass { + GstAutoDetectClass parent_class; +} GstAutoAudioSrcClass; + +GType gst_auto_audio_src_get_type (void); + +G_END_DECLS + +#endif /* __GST_AUTO_AUDIO_SRC_H__ */ diff --git a/gst/autodetect/gstautodetect.c b/gst/autodetect/gstautodetect.c new file mode 100755 index 0000000..59aab7e --- /dev/null +++ b/gst/autodetect/gstautodetect.c @@ -0,0 +1,507 @@ +/* GStreamer + * (c) 2005 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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <stdio.h> +#include <string.h> + +#include <gst/gst.h> + +#include "gstautodetect.h" +#include "gstautoaudiosink.h" +#include "gstautoaudiosrc.h" +#include "gstautovideosink.h" +#include "gstautovideosrc.h" + +GST_DEBUG_CATEGORY (autodetect_debug); + +#define DEFAULT_SYNC TRUE + +/* Properties */ +enum +{ + PROP_0, + PROP_CAPS, + PROP_SYNC, +}; + +static GstStateChangeReturn gst_auto_detect_change_state (GstElement * element, + GstStateChange transition); +static void gst_auto_detect_constructed (GObject * object); +static void gst_auto_detect_dispose (GObject * self); +static void gst_auto_detect_clear_kid (GstAutoDetect * self); +static void gst_auto_detect_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_auto_detect_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); + +#define gst_auto_detect_parent_class parent_class +G_DEFINE_ABSTRACT_TYPE (GstAutoDetect, gst_auto_detect, GST_TYPE_BIN); + +static void +gst_auto_detect_class_init (GstAutoDetectClass * klass) +{ + GObjectClass *gobject_class; + GstElementClass *eklass; + + gobject_class = G_OBJECT_CLASS (klass); + eklass = GST_ELEMENT_CLASS (klass); + + gobject_class->constructed = gst_auto_detect_constructed; + gobject_class->dispose = gst_auto_detect_dispose; + gobject_class->set_property = gst_auto_detect_set_property; + gobject_class->get_property = gst_auto_detect_get_property; + + eklass->change_state = GST_DEBUG_FUNCPTR (gst_auto_detect_change_state); + + /** + * GstAutoDetect:filter-caps: + * + * This property will filter out candidate sinks that can handle the specified + * caps. By default only elements that support uncompressed data are selected. + * + * This property can only be set before the element goes to the READY state. + */ + g_object_class_install_property (gobject_class, PROP_CAPS, + g_param_spec_boxed ("filter-caps", "Filter caps", + "Filter sink candidates using these caps.", GST_TYPE_CAPS, + G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + + g_object_class_install_property (gobject_class, PROP_SYNC, + g_param_spec_boolean ("sync", "Sync", + "Sync on the clock", DEFAULT_SYNC, + G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); +} + +static void +gst_auto_detect_dispose (GObject * object) +{ + GstAutoDetect *self = GST_AUTO_DETECT (object); + + gst_auto_detect_clear_kid (self); + + if (self->filter_caps) + gst_caps_unref (self->filter_caps); + self->filter_caps = NULL; + + G_OBJECT_CLASS (parent_class)->dispose ((GObject *) self); +} + +static void +gst_auto_detect_clear_kid (GstAutoDetect * self) +{ + if (self->kid) { + gst_element_set_state (self->kid, GST_STATE_NULL); + gst_bin_remove (GST_BIN (self), self->kid); + self->kid = NULL; + /* Don't lose the element type flag */ + GST_OBJECT_FLAG_SET (self, self->flag); + } +} + +static GstElement * +gst_auto_detect_create_fake_element_default (GstAutoDetect * self) +{ + GstElement *fake; + gchar dummy_factory[10], dummy_name[20]; + + sprintf (dummy_factory, "fake%s", self->type_klass_lc); + sprintf (dummy_name, "fake-%s-%s", self->media_klass_lc, self->type_klass_lc); + fake = gst_element_factory_make (dummy_factory, dummy_name); + g_object_set (fake, "sync", self->sync, NULL); + + return fake; +} + +static GstElement * +gst_auto_detect_create_fake_element (GstAutoDetect * self) +{ + GstAutoDetectClass *klass = GST_AUTO_DETECT_GET_CLASS (self); + GstElement *fake; + + if (klass->create_fake_element) + fake = klass->create_fake_element (self); + else + fake = gst_auto_detect_create_fake_element_default (self); + + return fake; +} + +static gboolean +gst_auto_detect_attach_ghost_pad (GstAutoDetect * self) +{ + GstPad *target = gst_element_get_static_pad (self->kid, self->type_klass_lc); + gboolean res = gst_ghost_pad_set_target (GST_GHOST_PAD (self->pad), target); + gst_object_unref (target); + + return res; +} + +/* Hack to make initial linking work; ideally, this'd work even when + * no target has been assigned to the ghostpad yet. */ +static void +gst_auto_detect_reset (GstAutoDetect * self) +{ + gst_auto_detect_clear_kid (self); + + /* placeholder element */ + self->kid = gst_auto_detect_create_fake_element (self); + gst_bin_add (GST_BIN (self), self->kid); + + gst_auto_detect_attach_ghost_pad (self); +} + +static GstStaticCaps raw_audio_caps = GST_STATIC_CAPS ("audio/x-raw"); +static GstStaticCaps raw_video_caps = GST_STATIC_CAPS ("video/x-raw"); + +static void +gst_auto_detect_init (GstAutoDetect * self) +{ + self->sync = DEFAULT_SYNC; +} + +static void +gst_auto_detect_constructed (GObject * object) +{ + GstAutoDetect *self = GST_AUTO_DETECT (object); + gboolean is_audio; + + if (G_OBJECT_CLASS (parent_class)->constructed) + G_OBJECT_CLASS (parent_class)->constructed (object); + + is_audio = !g_strcmp0 (self->media_klass, "Audio"); + self->type_klass = (self->flag == GST_ELEMENT_FLAG_SINK) ? "Sink" : "Source"; + self->type_klass_lc = (self->flag == GST_ELEMENT_FLAG_SINK) ? "sink" : "src"; + self->media_klass_lc = is_audio ? "audio" : "video"; + /* set the default raw caps */ + self->filter_caps = gst_static_caps_get (is_audio ? &raw_audio_caps : + &raw_video_caps); + + self->pad = gst_ghost_pad_new_no_target (self->type_klass_lc, + (self->flag == GST_ELEMENT_FLAG_SINK) ? GST_PAD_SINK : GST_PAD_SRC); + gst_element_add_pad (GST_ELEMENT (self), self->pad); + + gst_auto_detect_reset (self); + + /* mark element type */ + GST_OBJECT_FLAG_SET (self, self->flag); +} + +static gboolean +gst_auto_detect_factory_filter (GstPluginFeature * feature, gpointer data) +{ + GstAutoDetect *self = (GstAutoDetect *) data; + guint rank; + const gchar *klass; + + /* we only care about element factories */ + if (!GST_IS_ELEMENT_FACTORY (feature)) + return FALSE; + + /* audio sinks */ + klass = gst_element_factory_get_metadata (GST_ELEMENT_FACTORY (feature), + GST_ELEMENT_METADATA_KLASS); + if (!(strstr (klass, self->type_klass) && strstr (klass, self->media_klass))) + return FALSE; + + /* only select elements with autoplugging rank */ + rank = gst_plugin_feature_get_rank (feature); + if (rank < GST_RANK_MARGINAL) + return FALSE; + + return TRUE; +} + +static GstElement * +create_element_with_pretty_name (GstAutoDetect * self, + GstElementFactory * factory) +{ + GstElement *element; + gchar *name, *marker; + + marker = g_strdup (GST_OBJECT_NAME (factory)); + if (g_str_has_suffix (marker, self->type_klass_lc)) + marker[strlen (marker) - 4] = '\0'; + if (g_str_has_prefix (marker, "gst")) + memmove (marker, marker + 3, strlen (marker + 3) + 1); + name = g_strdup_printf ("%s-actual-%s-%s", GST_OBJECT_NAME (self), + self->type_klass_lc, marker); + g_free (marker); + + element = gst_element_factory_create (factory, name); + g_free (name); + + return element; +} + +static GstElement * +gst_auto_detect_find_best (GstAutoDetect * self) +{ + GList *list, *item; + GstElement *choice = NULL; + GstMessage *message = NULL; + GSList *errors = NULL; + GstBus *bus = gst_bus_new (); + GstPad *el_pad = NULL; + GstCaps *el_caps = NULL; + gboolean no_match = TRUE; + + /* We don't treat sound server sinks special. Our policy is that sound + * server sinks that have a rank must not auto-spawn a daemon under any + * circumstances, so there's nothing for us to worry about here */ + list = gst_registry_feature_filter (gst_registry_get (), + (GstPluginFeatureFilter) gst_auto_detect_factory_filter, FALSE, self); + list = + g_list_sort (list, (GCompareFunc) gst_plugin_feature_rank_compare_func); + + GST_LOG_OBJECT (self, "Trying to find usable %s elements ...", + self->media_klass_lc); + + for (item = list; item != NULL; item = item->next) { + GstElementFactory *f = GST_ELEMENT_FACTORY (item->data); + GstElement *el; + + if ((el = create_element_with_pretty_name (self, f))) { + GstStateChangeReturn ret; + + GST_DEBUG_OBJECT (self, "Testing %s", GST_OBJECT_NAME (f)); + + /* If autodetect has been provided with filter caps, + * accept only elements that match with the filter caps */ + if (self->filter_caps) { + el_pad = gst_element_get_static_pad (el, self->type_klass_lc); + el_caps = gst_pad_query_caps (el_pad, NULL); + gst_object_unref (el_pad); + GST_DEBUG_OBJECT (self, + "Checking caps: %" GST_PTR_FORMAT " vs. %" GST_PTR_FORMAT, + self->filter_caps, el_caps); + no_match = !gst_caps_can_intersect (self->filter_caps, el_caps); + gst_caps_unref (el_caps); + + if (no_match) { + GST_DEBUG_OBJECT (self, "Incompatible caps"); + gst_object_unref (el); + continue; + } else { + GST_DEBUG_OBJECT (self, "Found compatible caps"); + } + } + + gst_element_set_bus (el, bus); + ret = gst_element_set_state (el, GST_STATE_READY); + if (ret == GST_STATE_CHANGE_SUCCESS) { + GST_DEBUG_OBJECT (self, "This worked!"); + choice = el; + break; + } + + /* collect all error messages */ + while ((message = gst_bus_pop_filtered (bus, GST_MESSAGE_ERROR))) { + GST_DEBUG_OBJECT (self, "error message %" GST_PTR_FORMAT, message); + errors = g_slist_append (errors, message); + } + + gst_element_set_state (el, GST_STATE_NULL); + gst_object_unref (el); + } + } + + GST_DEBUG_OBJECT (self, "done trying"); + if (!choice) { + /* We post a warning and plug a fake-element. This is convenient for running + * tests without requiring hardware src/sinks. */ + if (errors) { + GError *err = NULL; + gchar *dbg = NULL; + + /* FIXME: we forward the first message for now; but later on it might make + * sense to forward all so that apps can actually analyse them. */ + gst_message_parse_error (GST_MESSAGE (errors->data), &err, &dbg); + gst_element_post_message (GST_ELEMENT_CAST (self), + gst_message_new_warning (GST_OBJECT_CAST (self), err, dbg)); + g_error_free (err); + g_free (dbg); + } else { + /* send warning message to application and use a fakesrc */ + GST_ELEMENT_WARNING (self, RESOURCE, NOT_FOUND, (NULL), + ("Failed to find a usable %s %s", self->media_klass_lc, + self->type_klass_lc)); + } + choice = gst_auto_detect_create_fake_element (self); + gst_element_set_state (choice, GST_STATE_READY); + } + gst_object_unref (bus); + gst_plugin_feature_list_free (list); + g_slist_foreach (errors, (GFunc) gst_mini_object_unref, NULL); + g_slist_free (errors); + + return choice; +} + +static gboolean +gst_auto_detect_detect (GstAutoDetect * self) +{ + GstElement *kid; + GstAutoDetectClass *klass = GST_AUTO_DETECT_GET_CLASS (self); + + gst_auto_detect_clear_kid (self); + + /* find element */ + GST_DEBUG_OBJECT (self, "Creating new kid"); + if (!(kid = gst_auto_detect_find_best (self))) + goto no_sink; + + self->has_sync = + g_object_class_find_property (G_OBJECT_GET_CLASS (kid), "sync") != NULL; + if (self->has_sync) + g_object_set (G_OBJECT (kid), "sync", self->sync, NULL); + if (klass->configure) { + klass->configure (self, kid); + } + + self->kid = kid; + /* Ensure the child is brought up to the right state to match the parent. + * Although it's currently always in READY and we're always doing NULL->READY. + */ + if (GST_STATE (self->kid) < GST_STATE (self)) + gst_element_set_state (self->kid, GST_STATE (self)); + + gst_bin_add (GST_BIN (self), kid); + + /* attach ghost pad */ + GST_DEBUG_OBJECT (self, "Re-assigning ghostpad"); + if (!gst_auto_detect_attach_ghost_pad (self)) + goto target_failed; + + GST_DEBUG_OBJECT (self, "done changing auto %s %s", self->media_klass_lc, + self->type_klass_lc); + + return TRUE; + + /* ERRORS */ +no_sink: + { + GST_ELEMENT_ERROR (self, LIBRARY, INIT, (NULL), + ("Failed to find a supported audio sink")); + return FALSE; + } +target_failed: + { + GST_ELEMENT_ERROR (self, LIBRARY, INIT, (NULL), + ("Failed to set target pad")); + return FALSE; + } +} + +static GstStateChangeReturn +gst_auto_detect_change_state (GstElement * element, GstStateChange transition) +{ + GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS; + GstAutoDetect *sink = GST_AUTO_DETECT (element); + + switch (transition) { + case GST_STATE_CHANGE_NULL_TO_READY: + if (!gst_auto_detect_detect (sink)) + return GST_STATE_CHANGE_FAILURE; + 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: + gst_auto_detect_reset (sink); + break; + default: + break; + } + + return ret; +} + +static void +gst_auto_detect_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstAutoDetect *self = GST_AUTO_DETECT (object); + + switch (prop_id) { + case PROP_CAPS: + if (self->filter_caps) + gst_caps_unref (self->filter_caps); + self->filter_caps = gst_caps_copy (gst_value_get_caps (value)); + break; + case PROP_SYNC: + self->sync = g_value_get_boolean (value); + if (self->kid && self->has_sync) + g_object_set_property (G_OBJECT (self->kid), pspec->name, value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_auto_detect_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstAutoDetect *self = GST_AUTO_DETECT (object); + + switch (prop_id) { + case PROP_CAPS: + gst_value_set_caps (value, self->filter_caps); + break; + case PROP_SYNC: + g_value_set_boolean (value, self->sync); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static gboolean +plugin_init (GstPlugin * plugin) +{ + GST_DEBUG_CATEGORY_INIT (autodetect_debug, "autodetect", 0, + "Autodetection audio/video output wrapper elements"); + + return gst_element_register (plugin, "autovideosink", + GST_RANK_NONE, GST_TYPE_AUTO_VIDEO_SINK) && + gst_element_register (plugin, "autovideosrc", + GST_RANK_NONE, GST_TYPE_AUTO_VIDEO_SRC) && + gst_element_register (plugin, "autoaudiosink", + GST_RANK_NONE, GST_TYPE_AUTO_AUDIO_SINK) && + gst_element_register (plugin, "autoaudiosrc", + GST_RANK_NONE, GST_TYPE_AUTO_AUDIO_SRC); +} + +GST_PLUGIN_DEFINE (GST_VERSION_MAJOR, + GST_VERSION_MINOR, + autodetect, + "Plugin contains auto-detection plugins for video/audio in- and outputs", + plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN) diff --git a/gst/autodetect/gstautodetect.h b/gst/autodetect/gstautodetect.h new file mode 100755 index 0000000..05ae89f --- /dev/null +++ b/gst/autodetect/gstautodetect.h @@ -0,0 +1,73 @@ +/* GStreamer + * (c) 2005 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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __GST_AUTO_DETECT_H__ +#define __GST_AUTO_DETECT_H__ + +G_BEGIN_DECLS + +GST_DEBUG_CATEGORY_EXTERN (autodetect_debug); +#define GST_CAT_DEFAULT autodetect_debug + +#define GST_TYPE_AUTO_DETECT (gst_auto_detect_get_type ()) +#define GST_AUTO_DETECT(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_DETECT, GstAutoDetect)) +#define GST_AUTO_DETECT_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_DETECT, GstAutoDetectClass)) +#define GST_IS_AUTO_DETECT(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_DETECT)) +#define GST_IS_AUTO_DETECT_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_DETECT)) +#define GST_AUTO_DETECT_GET_CLASS(obj) \ + (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_AUTO_DETECT, GstAutoDetectClass)) + +typedef struct _GstAutoDetect { + GstBin parent; + + /* configuration for subclasses */ + const gchar *media_klass; /* Audio/Video/... */ + GstElementFlags flag; /* GST_ELEMENT_FLAG_{SINK/SOURCE} */ + + /* explicit pointers to stuff used */ + GstPad *pad; + GstCaps *filter_caps; + gboolean sync; + + /* < private > */ + GstElement *kid; + gboolean has_sync; + const gchar *type_klass; /* Source/Sink */ + const gchar *media_klass_lc, *type_klass_lc; /* lower case versions */ + +} GstAutoDetect; + +typedef struct _GstAutoDetectClass { + GstBinClass parent_class; + + /*< private >*/ + /* virtual methods for subclasses */ + void (*configure)(GstAutoDetect *self, GstElement *kid); + GstElement * (*create_fake_element) (GstAutoDetect * autodetect); +} GstAutoDetectClass; + +GType gst_auto_detect_get_type (void); + +G_END_DECLS + +#endif /* __GST_AUTO_DETECT_H__ */ diff --git a/gst/autodetect/gstautovideosink.c b/gst/autodetect/gstautovideosink.c new file mode 100755 index 0000000..6eaee66 --- /dev/null +++ b/gst/autodetect/gstautovideosink.c @@ -0,0 +1,144 @@ +/* GStreamer + * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net> + * (c) 2006 Jan Schmidt <thaytan@noraisin.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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +/** + * SECTION:element-autovideosink + * @see_also: autoaudiosink, ximagesink, xvimagesink, sdlvideosink + * + * autovideosink is a video sink that automatically detects an appropriate + * video sink to use. It does so by scanning the registry for all elements + * that have <quote>Sink</quote> and <quote>Video</quote> in the class field + * of their element information, and also have a non-zero autoplugging rank. + * + * <refsect2> + * <title>Example launch line</title> + * |[ + * gst-launch-1.0 -v -m videotestsrc ! autovideosink + * ]| + * </refsect2> + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gstautovideosink.h" + +#define DEFAULT_TS_OFFSET 0 + +/* Properties */ +enum +{ + PROP_0, + PROP_TS_OFFSET, +}; + +static void gst_auto_video_sink_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec); +static void gst_auto_video_sink_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec); +static void gst_auto_video_sink_configure (GstAutoDetect * autodetect, + GstElement * kid); + +G_DEFINE_TYPE (GstAutoVideoSink, gst_auto_video_sink, GST_TYPE_AUTO_DETECT); + +static GstStaticPadTemplate sink_template = GST_STATIC_PAD_TEMPLATE ("sink", + GST_PAD_SINK, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + +static void +gst_auto_video_sink_class_init (GstAutoVideoSinkClass * klass) +{ + GObjectClass *gobject_class = G_OBJECT_CLASS (klass); + GstElementClass *eklass = GST_ELEMENT_CLASS (klass); + GstAutoDetectClass *aklass = GST_AUTO_DETECT_CLASS (klass); + + gobject_class->set_property = gst_auto_video_sink_set_property; + gobject_class->get_property = gst_auto_video_sink_get_property; + + aklass->configure = gst_auto_video_sink_configure; + + g_object_class_install_property (gobject_class, PROP_TS_OFFSET, + g_param_spec_int64 ("ts-offset", "TS Offset", + "Timestamp offset in nanoseconds", G_MININT64, G_MAXINT64, + DEFAULT_TS_OFFSET, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); + + gst_element_class_add_pad_template (eklass, + gst_static_pad_template_get (&sink_template)); + gst_element_class_set_static_metadata (eklass, "Auto video sink", + "Sink/Video", + "Wrapper video sink for automatically detected video sink", + "Jan Schmidt <thaytan@noraisin.net>"); +} + +static void +gst_auto_video_sink_init (GstAutoVideoSink * sink) +{ + GstAutoDetect *autodetect = GST_AUTO_DETECT (sink); + + autodetect->media_klass = "Video"; + autodetect->flag = GST_ELEMENT_FLAG_SINK; + + sink->ts_offset = DEFAULT_TS_OFFSET; +} + +static void +gst_auto_video_sink_configure (GstAutoDetect * autodetect, GstElement * kid) +{ + GstAutoVideoSink *self = GST_AUTO_VIDEO_SINK (autodetect); + + g_object_set (G_OBJECT (kid), "ts-offset", self->ts_offset, NULL); +} + +static void +gst_auto_video_sink_set_property (GObject * object, guint prop_id, + const GValue * value, GParamSpec * pspec) +{ + GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object); + GstAutoDetect *autodetect = (GstAutoDetect *) sink; + + switch (prop_id) { + case PROP_TS_OFFSET: + sink->ts_offset = g_value_get_int64 (value); + if (autodetect->kid) + g_object_set_property (G_OBJECT (autodetect->kid), pspec->name, value); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +gst_auto_video_sink_get_property (GObject * object, guint prop_id, + GValue * value, GParamSpec * pspec) +{ + GstAutoVideoSink *sink = GST_AUTO_VIDEO_SINK (object); + + switch (prop_id) { + case PROP_TS_OFFSET: + g_value_set_int64 (value, sink->ts_offset); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} diff --git a/gst/autodetect/gstautovideosink.h b/gst/autodetect/gstautovideosink.h new file mode 100755 index 0000000..5b7db40 --- /dev/null +++ b/gst/autodetect/gstautovideosink.h @@ -0,0 +1,55 @@ +/* GStreamer + * (c) 2005 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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __GST_AUTO_VIDEO_SINK_H__ +#define __GST_AUTO_VIDEO_SINK_H__ + +#include <gst/gst.h> +#include "gstautodetect.h" + +G_BEGIN_DECLS + +#define GST_TYPE_AUTO_VIDEO_SINK \ + (gst_auto_video_sink_get_type ()) +#define GST_AUTO_VIDEO_SINK(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_VIDEO_SINK, \ + GstAutoVideoSink)) +#define GST_AUTO_VIDEO_SINK_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_VIDEO_SINK, \ + GstAutoVideoSinkClass)) +#define GST_IS_AUTO_VIDEO_SINK(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_VIDEO_SINK)) +#define GST_IS_AUTO_VIDEO_SINK_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_VIDEO_SINK)) + +typedef struct _GstAutoVideoSink { + GstAutoDetect parent; + + GstClockTimeDiff ts_offset; +} GstAutoVideoSink; + +typedef struct _GstAutoVideoSinkClass { + GstAutoDetectClass parent_class; +} GstAutoVideoSinkClass; + +GType gst_auto_video_sink_get_type (void); + +G_END_DECLS + +#endif /* __GST_AUTO_VIDEO_SINK_H__ */ diff --git a/gst/autodetect/gstautovideosrc.c b/gst/autodetect/gstautovideosrc.c new file mode 100755 index 0000000..854c641 --- /dev/null +++ b/gst/autodetect/gstautovideosrc.c @@ -0,0 +1,95 @@ +/* GStreamer + * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net> + * (c) 2006 Jan Schmidt <thaytan@noraisin.net> + * (c) 2008 Stefan Kost <ensonic@users.sf.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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +/** + * SECTION:element-autovideosrc + * @see_also: autoaudiosrc, v4l2src, v4lsrc + * + * autovideosrc is a video src that automatically detects an appropriate + * video source to use. It does so by scanning the registry for all elements + * that have <quote>Source</quote> and <quote>Video</quote> in the class field + * of their element information, and also have a non-zero autoplugging rank. + * + * <refsect2> + * <title>Example launch line</title> + * |[ + * gst-launch-1.0 -v -m autovideosrc ! xvimagesink + * ]| + * </refsect2> + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "gstautovideosrc.h" + +G_DEFINE_TYPE (GstAutoVideoSrc, gst_auto_video_src, GST_TYPE_AUTO_DETECT); + +static GstStaticPadTemplate src_template = GST_STATIC_PAD_TEMPLATE ("src", + GST_PAD_SRC, + GST_PAD_ALWAYS, + GST_STATIC_CAPS_ANY); + +static GstElement * +gst_auto_video_src_create_fake_element (GstAutoDetect * autodetect) +{ + GstElement *fake; + + fake = gst_element_factory_make ("videotestsrc", "fake-auto-video-src"); + if (fake != NULL) { + g_object_set (fake, "is-live", TRUE, NULL); + } else { + GST_ELEMENT_ERROR (autodetect, RESOURCE, NOT_FOUND, + ("Failed to find usable video source element."), + ("Failed to find a usable video source and couldn't create a video" + "testsrc as fallback either, check your GStreamer installation.")); + /* This will error out with not-negotiated.. */ + fake = gst_element_factory_make ("fakesrc", "fake-auto-video-src"); + } + return fake; +} + +static void +gst_auto_video_src_class_init (GstAutoVideoSrcClass * klass) +{ + GstAutoDetectClass *autoclass = GST_AUTO_DETECT_CLASS (klass); + GstElementClass *eklass = GST_ELEMENT_CLASS (klass); + + gst_element_class_add_pad_template (eklass, + gst_static_pad_template_get (&src_template)); + gst_element_class_set_static_metadata (eklass, "Auto video source", + "Source/Video", + "Wrapper video source for automatically detected video source", + "Jan Schmidt <thaytan@noraisin.net>, " + "Stefan Kost <ensonic@users.sf.net>"); + + autoclass->create_fake_element = gst_auto_video_src_create_fake_element; +} + +static void +gst_auto_video_src_init (GstAutoVideoSrc * src) +{ + GstAutoDetect *autodetect = GST_AUTO_DETECT (src); + + autodetect->media_klass = "Video"; + autodetect->flag = GST_ELEMENT_FLAG_SOURCE; +} diff --git a/gst/autodetect/gstautovideosrc.h b/gst/autodetect/gstautovideosrc.h new file mode 100755 index 0000000..e76cc72 --- /dev/null +++ b/gst/autodetect/gstautovideosrc.h @@ -0,0 +1,54 @@ +/* GStreamer + * (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net> + * (c) 2008 Stefan Kost <ensonic@users.sf.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., 51 Franklin St, Fifth Floor, + * Boston, MA 02110-1301, USA. + */ + +#ifndef __GST_AUTO_VIDEO_SRC_H__ +#define __GST_AUTO_VIDEO_SRC_H__ + +#include <gst/gst.h> +#include "gstautodetect.h" + +G_BEGIN_DECLS + +#define GST_TYPE_AUTO_VIDEO_SRC \ + (gst_auto_video_src_get_type ()) +#define GST_AUTO_VIDEO_SRC(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_AUTO_VIDEO_SRC, \ + GstAutoVideoSrc)) +#define GST_AUTO_VIDEO_SRC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_AUTO_VIDEO_SRC, \ + GstAutoVideoSrcClass)) +#define GST_IS_AUTO_VIDEO_SRC(obj) \ + (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_AUTO_VIDEO_SRC)) +#define GST_IS_AUTO_VIDEO_SRC_CLASS(klass) \ + (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_AUTO_VIDEO_SRC)) + +typedef struct _GstAutoVideoSrc { + GstAutoDetect parent; +} GstAutoVideoSrc; + +typedef struct _GstAutoVideoSrcClass { + GstAutoDetectClass parent_class; +} GstAutoVideoSrcClass; + +GType gst_auto_video_src_get_type (void); + +G_END_DECLS + +#endif /* __GST_AUTO_VIDEO_SRC_H__ */ |