1 files changed, 78 insertions, 0 deletions
diff --git a/gst/audiofx/audiochebyshevfreqlimit.h b/gst/audiofx/audiochebyshevfreqlimit.h
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+++ b/gst/audiofx/audiochebyshevfreqlimit.h
@@ -0,0 +1,78 @@
+/* 
+ * GStreamer
+ * Copyright (C) 2007 Sebastian Dröge <slomo@circular-chaos.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 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_AUDIO_CHEBYSHEV_FREQ_LIMIT_H__
+#define __GST_AUDIO_CHEBYSHEV_FREQ_LIMIT_H__
+
+#include <gst/gst.h>
+#include <gst/base/gstbasetransform.h>
+#include <gst/audio/audio.h>
+#include <gst/audio/gstaudiofilter.h>
+
+G_BEGIN_DECLS
+#define GST_TYPE_AUDIO_CHEBYSHEV_FREQ_LIMIT            (gst_audio_chebyshev_freq_limit_get_type())
+#define GST_AUDIO_CHEBYSHEV_FREQ_LIMIT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_CHEBYSHEV_FREQ_LIMIT,GstAudioChebyshevFreqLimit))
+#define GST_IS_AUDIO_CHEBYSHEV_FREQ_LIMIT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_CHEBYSHEV_FREQ_LIMIT))
+#define GST_AUDIO_CHEBYSHEV_FREQ_LIMIT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_CHEBYSHEV_FREQ_LIMIT,GstAudioChebyshevFreqLimitClass))
+#define GST_IS_AUDIO_CHEBYSHEV_FREQ_LIMIT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_CHEBYSHEV_FREQ_LIMIT))
+#define GST_AUDIO_CHEBYSHEV_FREQ_LIMIT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_CHEBYSHEV_FREQ_LIMIT,GstAudioChebyshevFreqLimitClass))
+typedef struct _GstAudioChebyshevFreqLimit GstAudioChebyshevFreqLimit;
+typedef struct _GstAudioChebyshevFreqLimitClass GstAudioChebyshevFreqLimitClass;
+
+typedef void (*GstAudioChebyshevFreqLimitProcessFunc) (GstAudioChebyshevFreqLimit *, guint8 *, guint);
+
+typedef struct
+{
+  gdouble *x;
+  gint x_pos;
+  gdouble *y;
+  gint y_pos;
+} GstAudioChebyshevFreqLimitChannelCtx;
+
+struct _GstAudioChebyshevFreqLimit
+{
+  GstAudioFilter audiofilter;
+
+  gint mode;
+  gint type;
+  gint poles;
+  gfloat cutoff;
+  gfloat ripple;
+
+  /* < private > */
+  GstAudioChebyshevFreqLimitProcessFunc process;
+
+  gboolean have_coeffs;
+  gdouble *a;
+  gint num_a;
+  gdouble *b;
+  gint num_b;
+  GstAudioChebyshevFreqLimitChannelCtx *channels;
+};
+
+struct _GstAudioChebyshevFreqLimitClass
+{
+  GstAudioFilterClass parent;
+};
+
+GType gst_audio_chebyshev_freq_limit_get_type (void);
+
+G_END_DECLS
+#endif /* __GST_AUDIO_CHEBYSHEV_FREQ_LIMIT_H__ */