GstVideofilter abstract class for video filters

Original commit message from CVS:
GstVideofilter abstract class for video filters

1 files changed, 109 insertions, 0 deletions

diff --git a/gst/videofilter/gstvideofilter.h b/gst/videofilter/gstvideofilter.h
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+++ b/gst/videofilter/gstvideofilter.h
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+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * 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_VIDEOFILTER_H__
+#define __GST_VIDEOFILTER_H__
+
+
+#include <config.h>
+#include <gst/gst.h>
+
+
+G_BEGIN_DECLS
+
+typedef struct _GstVideofilter GstVideofilter;
+typedef struct _GstVideofilterClass GstVideofilterClass;
+
+typedef void (*GstVideofilterFilterFunc)(GstVideofilter *filter,
+    void *out_data, void *in_data);
+
+typedef void (*GstVideofilterSetupFunc)(GstVideofilter *filter);
+
+typedef struct _GstVideofilterFormat GstVideofilterFormat;
+struct _GstVideofilterFormat {
+  char *fourcc;
+  int depth;
+  GstVideofilterFilterFunc filter_func;
+  int bpp;
+  unsigned int endianness;
+  unsigned int red_mask;
+  unsigned int green_mask;
+  unsigned int blue_mask;
+};
+
+#define GST_TYPE_VIDEOFILTER \
+  (gst_videofilter_get_type())
+#define GST_VIDEOFILTER(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_VIDEOFILTER,GstVideofilter))
+#define GST_VIDEOFILTER_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_VIDEOFILTER,GstVideofilterClass))
+#define GST_IS_VIDEOFILTER(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_VIDEOFILTER))
+#define GST_IS_VIDEOFILTER_CLASS(obj) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_VIDEOFILTER))
+
+struct _GstVideofilter {
+  GstElement element;
+
+  GstPad *sinkpad,*srcpad;
+
+  /* video state */
+  gboolean inited;
+  GstVideofilterFormat *format;
+  gint to_width;
+  gint to_height;
+  gint from_width;
+  gint from_height;
+  gboolean passthru;
+
+  /* private */
+  gint from_buf_size;
+  gint to_buf_size;
+
+  GstBuffer *in_buf;
+  GstBuffer *out_buf;
+};
+
+struct _GstVideofilterClass {
+  GstElementClass parent_class;
+
+  GPtrArray *formats;
+  GstVideofilterSetupFunc setup;
+};
+
+GType gst_videofilter_get_type(void);
+
+int gst_videofilter_get_input_width(GstVideofilter *videofilter);
+int gst_videofilter_get_input_height(GstVideofilter *videofilter);
+void gst_videofilter_set_output_size(GstVideofilter *videofilter,
+    int width, int height);
+GstVideofilterFormat *gst_videofilter_find_format_by_caps(GstVideofilter *filter,
+    GstCaps *caps);
+GstCaps *gst_videofilter_class_get_capslist(GstVideofilterClass *videofilterclass);
+
+void gst_videofilter_postinit(GstVideofilter *videofilter);
+
+void gst_videofilter_class_add_format(GstVideofilterClass *videofilterclass,
+    GstVideofilterFormat *format);
+
+G_END_DECLS
+
+#endif /* __GST_VIDEOFILTER_H__ */
+