1 files changed, 274 insertions, 0 deletions
diff --git a/gst-plugin/src/gstaudiofilter.c b/gst-plugin/src/gstaudiofilter.c
new file mode 100644
index 0000000..04b2b07
--- /dev/null
+++ b/gst-plugin/src/gstaudiofilter.c
@@ -0,0 +1,274 @@
+/*
+ * GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2003> David Schleef <ds@schleef.org>
+ * Copyright (C) YEAR AUTHOR_NAME AUTHOR_EMAIL
+ *
+ * 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-plugin
+ *
+ * FIXME:Describe plugin here.
+ *
+ * <refsect2>
+ * <title>Example launch line</title>
+ * |[
+ * gst-launch -v -m audiotestsrc ! plugin ! autoaudiosink
+ * ]|
+ * </refsect2>
+ */
+ 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/audio/audio.h>
+#include <gst/audio/gstaudiofilter.h>
+#include <string.h>
+
+GST_DEBUG_CATEGORY_STATIC (gst_plugin_template_debug);
+#define GST_CAT_DEFAULT gst_plugin_template_debug
+
+typedef struct _GstPluginTemplate GstPluginTemplate;
+typedef struct _GstPluginTemplateClass GstPluginTemplateClass;
+
+#define GST_TYPE_PLUGIN_TEMPLATE \
+  (gst_plugin_template_get_type())
+#define GST_PLUGIN_TEMPLATE(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PLUGIN_TEMPLATE,GstPluginTemplate))
+#define GST_PLUGIN_TEMPLATE_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PLUGIN_TEMPLATE,GstPluginTemplateClass))
+#define GST_IS_PLUGIN_TEMPLATE(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PLUGIN_TEMPLATE))
+#define GST_IS_PLUGIN_TEMPLATE_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PLUGIN_TEMPLATE))
+
+struct _GstPluginTemplate
+{
+  GstAudioFilter audiofilter;
+};
+
+struct _GstPluginTemplateClass
+{
+  GstAudioFilterClass parent_class;
+};
+
+
+enum
+{
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum
+{
+  ARG_0
+  /* FILL ME */
+};
+
+/* debug category for fltering log messages
+ *
+ * FIXME:exchange the string 'Template plugin' with your description
+ */
+#define DEBUG_INIT(bla) \
+  GST_DEBUG_CATEGORY_INIT (gst_plugin_template_debug, "plugin", 0, "Template plugin");
+
+GST_BOILERPLATE_FULL (GstPluginTemplate, gst_plugin_template,
+    GstAudioFilter, GST_TYPE_AUDIO_FILTER, DEBUG_INIT);
+
+static void gst_plugin_template_set_property (GObject * object,
+    guint prop_id, const GValue * value, GParamSpec * pspec);
+static void gst_plugin_template_get_property (GObject * object,
+    guint prop_id, GValue * value, GParamSpec * pspec);
+
+static gboolean gst_plugin_template_setup (GstAudioFilter * filter,
+    GstRingBufferSpec * spec);
+static GstFlowReturn gst_plugin_template_filter (GstBaseTransform * bt,
+    GstBuffer * outbuf, GstBuffer * inbuf);
+static GstFlowReturn
+gst_plugin_template_filter_inplace (GstBaseTransform * base_transform,
+    GstBuffer * buf);
+
+#define ALLOWED_CAPS_STRING \
+    GST_AUDIO_INT_STANDARD_PAD_TEMPLATE_CAPS
+
+/* GObject vmethod implementations */
+
+static void
+gst_plugin_template_base_init (gpointer klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+  GstAudioFilterClass *audiofilter_class = GST_AUDIO_FILTER_CLASS (klass);
+  GstCaps *caps;
+  
+  gst_element_class_set_details_simple (element_class,
+    "Plugin",
+    "Filter/Effect/Audio",
+    "FIXME:Filters audio",
+    "AUTHOR_NAME AUTHOR_EMAIL");
+
+  caps = gst_caps_from_string (ALLOWED_CAPS_STRING);
+  gst_audio_filter_class_add_pad_templates (audiofilter_class, caps);
+  gst_caps_unref (caps);
+}
+
+static void
+gst_plugin_template_class_init (GstPluginTemplateClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstBaseTransformClass *btrans_class;
+  GstAudioFilterClass *audio_filter_class;
+
+  gobject_class = (GObjectClass *) klass;
+  btrans_class = (GstBaseTransformClass *) klass;
+  audio_filter_class = (GstAudioFilterClass *) klass;
+
+#if 0
+  g_object_class_install_property (gobject_class, ARG_METHOD,
+      g_param_spec_enum ("method", "method", "method",
+          GST_TYPE_AUDIOTEMPLATE_METHOD, GST_AUDIOTEMPLATE_METHOD_1,
+          G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+#endif
+
+  gobject_class->set_property = gst_plugin_template_set_property;
+  gobject_class->get_property = gst_plugin_template_get_property;
+
+  /* this function will be called whenever the format changes */
+  audio_filter_class->setup = gst_plugin_template_setup;
+
+  /* here you set up functions to process data (either in place, or from
+   * one input buffer to another output buffer); only one is required */
+  btrans_class->transform = gst_plugin_template_filter;
+  btrans_class->transform_ip = gst_plugin_template_filter_inplace;
+}
+
+static void
+gst_plugin_template_init (GstPluginTemplate * plugin_template,
+    GstPluginTemplateClass * g_class)
+{
+  GST_DEBUG ("init");
+
+  /* do stuff if you need to */
+}
+
+static void
+gst_plugin_template_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstPluginTemplate *filter = GST_PLUGIN_TEMPLATE (object);
+
+  GST_OBJECT_LOCK (filter);
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+  GST_OBJECT_UNLOCK (filter);
+}
+
+static void
+gst_plugin_template_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstPluginTemplate *filter = GST_PLUGIN_TEMPLATE (object);
+
+  GST_OBJECT_LOCK (filter);
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+  GST_OBJECT_UNLOCK (filter);
+}
+
+static gboolean
+gst_plugin_template_setup (GstAudioFilter * filter,
+    GstRingBufferSpec * spec)
+{
+  GstPluginTemplate *plugin_template;
+
+  plugin_template = GST_PLUGIN_TEMPLATE (filter);
+
+  /* if any setup needs to be done, do it here */
+
+  return TRUE;                  /* it's all good */
+}
+
+/* You may choose to implement either a copying filter or an
+ * in-place filter (or both).  Implementing only one will give
+ * full functionality, however, implementing both will cause
+ * audiofilter to use the optimal function in every situation,
+ * with a minimum of memory copies. */
+
+static GstFlowReturn
+gst_plugin_template_filter (GstBaseTransform * base_transform,
+    GstBuffer * inbuf, GstBuffer * outbuf)
+{
+  GstPluginTemplate *plugin_template;
+  GstAudioFilter *audiofilter;
+
+  audiofilter = GST_AUDIO_FILTER (base_transform);
+  plugin_template = GST_PLUGIN_TEMPLATE (base_transform);
+
+  /* FIXME: do something interesting here.  This simply copies the source
+   * to the destination. */
+
+  memcpy (GST_BUFFER_DATA (outbuf), GST_BUFFER_DATA (inbuf),
+      GST_BUFFER_SIZE (inbuf));
+
+  return GST_FLOW_OK;
+}
+
+static GstFlowReturn
+gst_plugin_template_filter_inplace (GstBaseTransform * base_transform,
+    GstBuffer * buf)
+{
+  GstPluginTemplate *plugin_template;
+  GstAudioFilter *audiofilter;
+
+  audiofilter = GST_AUDIO_FILTER (base_transform);
+  plugin_template = GST_PLUGIN_TEMPLATE (base_transform);
+
+  /* FIXME: do something interesting here.  This simply copies the source
+   * to the destination. */
+
+  return GST_FLOW_OK;
+}
+
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+  return gst_element_register (plugin, "plugin", GST_RANK_NONE,
+      GST_TYPE_PLUGIN_TEMPLATE);
+}
+
+/* gstreamer looks for this structure to register plugins
+ *
+ * FIXME:exchange the string 'Template plugin' with you plugin description
+ */
+GST_PLUGIN_DEFINE (
+    GST_VERSION_MAJOR,
+    GST_VERSION_MINOR,
+    "plugin",
+    "Template plugin",
+    plugin_init,
+    VERSION, "LGPL",
+    "GStreamer",
+    "http://gstreamer.net/"
+);