Interface implementation example: OSS mixer. Also osscommon->osselement so it can be loaded without being a source/si...

Original commit message from CVS:
Interface implementation example: OSS mixer. Also osscommon->osselement so it can be loaded without being a source/sink (for a stand-alone mixer)

1 files changed, 113 insertions, 0 deletions

diff --git a/sys/oss/gstosselement.h b/sys/oss/gstosselement.h
new file mode 100644
index 00000000..eeae84b0
--- /dev/null
+++ b/sys/oss/gstosselement.h
@@ -0,0 +1,113 @@
+/* GStreamer
+ * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
+ *                    2000 Wim Taymans <wim.taymans@chello.be>
+ *
+ * gstosselement.h: 
+ *
+ * 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_OSS_ELEMENT_H__
+#define __GST_OSS_ELEMENT_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_OSSELEMENT \
+  (gst_osselement_get_type())
+#define GST_OSSELEMENT(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_OSSELEMENT,GstOssElement))
+#define GST_OSSELEMENT_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_OSSELEMENT,GstOssElementClass))
+#define GST_IS_OSSELEMENT(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_OSSELEMENT))
+#define GST_IS_OSSELEMENT_CLASS(obj) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_OSSELEMENT))
+
+typedef struct _GstOssElement GstOssElement;
+typedef struct _GstOssElementClass GstOssElementClass;
+
+typedef enum {
+  GST_OSSELEMENT_READ,
+  GST_OSSELEMENT_WRITE,
+} GstOssOpenMode;
+
+struct _GstOssElement
+{
+  /* yes, we're a gstelement too */
+  GstElement     parent;
+
+  gchar		*device,
+		*mixer_dev;
+
+  /* device state */
+  int		 fd;
+  int		 caps; /* the capabilities */
+  gint		 format;
+  gint		 fragment;
+  guint64	 fragment_time;
+  gint		 fragment_size;
+  GstOssOpenMode mode;
+
+  /* stats */
+  guint		 bps;
+
+  /* parameters */
+  gint 		 law;
+  gint 		 endianness;
+  gboolean	 sign;
+  gint		 width;
+  gint		 depth;
+  gint		 channels;
+  gint		 rate;
+
+  /* mixer stuff */
+  GList		*channellist;
+  guint32	 stereomask,
+		 recdevs,
+		 recmask,
+		 mixcaps;
+  gint		 mixer_fd;
+};
+
+struct _GstOssElementClass {
+  GstElementClass klass;
+};
+
+GType		gst_osselement_get_type		(void);
+
+/* factory register function */
+gboolean 	gst_osselement_factory_init	(GstPlugin *plugin);
+
+/* some useful functions */
+gboolean 	gst_osselement_parse_caps 	(GstOssElement *oss,
+						 GstCaps       *caps);
+gboolean	gst_osselement_merge_fixed_caps (GstOssElement *oss,
+						 GstCaps       *caps);
+	
+gboolean 	gst_osselement_sync_parms 	(GstOssElement *oss);
+void		gst_osselement_reset 		(GstOssElement *oss);
+
+gboolean 	gst_osselement_convert 	 	(GstOssElement *oss, 
+						 GstFormat      src_format,
+						 gint64         src_value,
+		                       		 GstFormat     *dest_format,
+						 gint64        *dest_value);
+
+G_END_DECLS
+
+#endif /* __GST_OSS_ELEMENT_H__ */