/* gstsynaesthesia.c: implementation of synaesthesia drawing element
* Copyright (C) <2001> Richard Boulton <richard@tartarus.org>
*
- * 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 program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU 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,
+ * This program 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.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * You should have received a copy of the GNU 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.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+/**
+ * SECTION:element-synaesthesia
+ * @see_also: goom
+ *
+ * <refsect2>
+ * <para>
+ * Synaesthesia is an audio visualisation element. It creates glitter and
+ * pulsating fog based on the incomming audio signal.
+ * </para>
+ * <title>Example launch line</title>
+ * <para>
+ * <programlisting>
+ * gst-launch -v audiotestsrc ! audioconvert ! synaesthesia ! ximagesink
+ * gst-launch -v audiotestsrc ! audioconvert ! synaesthesia ! ffmpegcolorspace ! xvimagesink
+ * </programlisting>
+ * </para>
+ * </refsect2>
*/
#ifdef HAVE_CONFIG_H
#define SYNAES_WIDTH 320
#define SYNAES_HEIGHT 200
-#define GST_TYPE_SYNAESTHESIA (gst_synaesthesia_get_type())
-#define GST_SYNAESTHESIA(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SYNAESTHESIA,GstSynaesthesia))
-#define GST_SYNAESTHESIA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SYNAESTHESIA,GstSynaesthesia))
-#define GST_IS_SYNAESTHESIA(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SYNAESTHESIA))
+#define GST_TYPE_SYNAESTHESIA (gst_synaesthesia_get_type())
+#define GST_SYNAESTHESIA(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SYNAESTHESIA,GstSynaesthesia))
+#define GST_SYNAESTHESIA_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SYNAESTHESIA,GstSynaesthesiaClass))
+#define GST_IS_SYNAESTHESIA(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SYNAESTHESIA))
#define GST_IS_SYNAESTHESIA_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SYNAESTHESIA))
typedef struct _GstSynaesthesia GstSynaesthesia;
parent_class = g_type_class_peek_parent (klass);
- gstelement_class->change_state = gst_synaesthesia_change_state;
-
gobject_class->dispose = gst_synaesthesia_dispose;
gobject_class->finalize = gst_synaesthesia_finalize;
+
+ gstelement_class->change_state =
+ GST_DEBUG_FUNCPTR (gst_synaesthesia_change_state);
}
static void
{
/* create the sink and src pads */
synaesthesia->sinkpad =
- gst_pad_new_from_template (gst_static_pad_template_get
- (&gst_synaesthesia_sink_template), "sink");
- synaesthesia->srcpad =
- gst_pad_new_from_template (gst_static_pad_template_get
- (&gst_synaesthesia_src_template), "src");
- gst_element_add_pad (GST_ELEMENT (synaesthesia), synaesthesia->sinkpad);
- gst_element_add_pad (GST_ELEMENT (synaesthesia), synaesthesia->srcpad);
-
+ gst_pad_new_from_static_template (&gst_synaesthesia_sink_template,
+ "sink");
gst_pad_set_chain_function (synaesthesia->sinkpad, gst_synaesthesia_chain);
gst_pad_set_setcaps_function (synaesthesia->sinkpad,
gst_synaesthesia_sink_setcaps);
+ gst_element_add_pad (GST_ELEMENT (synaesthesia), synaesthesia->sinkpad);
+ synaesthesia->srcpad =
+ gst_pad_new_from_static_template (&gst_synaesthesia_src_template, "src");
gst_pad_set_getcaps_function (synaesthesia->srcpad,
gst_synaesthesia_src_getcaps);
gst_pad_set_setcaps_function (synaesthesia->srcpad,
gst_synaesthesia_src_setcaps);
+ gst_element_add_pad (GST_ELEMENT (synaesthesia), synaesthesia->srcpad);
synaesthesia->adapter = gst_adapter_new ();
GstStructure *structure;
gint channels;
gint rate;
+ gboolean res = TRUE;
synaesthesia = GST_SYNAESTHESIA (gst_pad_get_parent (pad));
structure = gst_caps_get_structure (caps, 0);
if (!gst_structure_get_int (structure, "channels", &channels) ||
- !gst_structure_get_int (structure, "rate", &rate)) {
- return GST_PAD_LINK_REFUSED;
- }
+ !gst_structure_get_int (structure, "rate", &rate))
+ goto missing_caps_details;
if (synaesthesia->channels != 2)
- return GST_PAD_LINK_REFUSED;
+ goto wrong_channels;
synaesthesia->sample_rate = rate;
- return TRUE;
+done:
+ gst_object_unref (synaesthesia);
+ return res;
+
+ /* Errors */
+missing_caps_details:
+ GST_WARNING ("missing channels or rate in the caps");
+ res = FALSE;
+ goto done;
+wrong_channels:
+ GST_WARNING ("channesl must be 2, but are %d", channels);
+ res = FALSE;
+ goto done;
}
static GstCaps *
"width", G_TYPE_INT, synaesthesia->width,
"height", G_TYPE_INT, synaesthesia->height,
"framerate", GST_TYPE_FRACTION, (gint) synaesthesia->fps, 1, NULL);
- //gst_structure_set (structure, "width", G_TYPE_INT, SYNAES_WIDTH, "height",
- // G_TYPE_INT, SYNAES_HEIGHT, NULL);
}
gst_object_unref (synaesthesia);
/* no buffer allocated, we don't care why. */
if (ret != GST_FLOW_OK)
- return ret;
+ goto done;
GST_BUFFER_TIMESTAMP (outbuf) =
synaesthesia->audio_basetime +
synaesthesia->channels * sizeof (gint16));
}
+done:
gst_object_unref (synaesthesia);
return ret;
-/* synaescope.cpp
- * Copyright (C) 1999,2002 Richard Boulton <richard@tartarus.org>
+/* synaescope.cpp
+ * Copyright (C) 1999,2002 Richard Boulton <richard@tartarus.org>
*
- * Much code copied from Synaesthesia - a program to display sound
- *
graphically, by Paul Francis Harrison <pfh@yoyo.cc.monash.edu.au>
+ * Much code copied from Synaesthesia - a program to display sound
+ * graphically, by Paul Francis Harrison <pfh@yoyo.cc.monash.edu.au>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
projects / platform / upstream / gstreamer.git / commitdiff