Add new libsoundtouch-based pitch plugin (#331335).

Original commit message from CVS:
Patch by: Wouter Paeson  <wouter at kangaroot dot net>
* configure.ac:
* ext/Makefile.am:
* ext/soundtouch/Makefile.am:
* ext/soundtouch/gstpitch.cc:
* ext/soundtouch/gstpitch.hh:
Add new libsoundtouch-based pitch plugin (#331335).

1 files changed, 88 insertions, 0 deletions

diff --git a/ext/soundtouch/gstpitch.hh b/ext/soundtouch/gstpitch.hh
new file mode 100644
index 00000000..24d42ba2
--- /dev/null
+++ b/ext/soundtouch/gstpitch.hh
@@ -0,0 +1,88 @@
+/* GStreamer pitch controller element
+ * Copyright (C) 2006 Wouter Paesen <wouter@blue-gate.be>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ */
+
+#ifndef __GST_PITCH_H__
+#define __GST_PITCH_H__
+
+#include <gst/gst.h>
+
+G_BEGIN_DECLS
+
+#define GST_TYPE_PITCH \
+  (gst_pitch_get_type())
+#define GST_PITCH(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_PITCH,GstPitch))
+#define GST_PITCH_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_PITCH,GstPitchClass))
+#define GST_IS_PITCH(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_PITCH))
+#define GST_IS_PITCH_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_PITCH))
+
+typedef struct _GstPitch            GstPitch;
+typedef struct _GstPitchClass       GstPitchClass;
+typedef struct _GstPitchPrivate     GstPitchPrivate;
+
+
+struct _GstPitch
+{
+  GstElement element;
+
+  GstPad  *srcpad;
+  GstPad  *sinkpad;
+
+  /* parameter values */
+  gfloat   tempo;               /* time stretch 
+                                 * change the duration, without affecting the pitch
+                                 * > 1 makes the stream shorter
+                                 */
+
+  gfloat   rate;                /* change playback rate 
+                                 * resample
+                                 * > 1 makes the stream shorter
+                                 */
+
+  gfloat   pitch;               /* change pitch 
+                                 * change the pitch without affecting the
+                                 * duration, stream length doesn't change
+                                 */
+
+  /* values extracted from caps */
+  gint          samplerate;      /* samplerate                           */
+  gint          channels;        /* number of audio channels             */
+  gsize         sample_size;     /* number of bytes for a single sample  */
+  GstClockTime  sample_duration; /* time for 1 sample                    */
+
+  /* stream tracking */
+  GstClockTime  next_buffer_time;
+  gint64        next_buffer_offset;
+
+  GstPitchPrivate *priv;
+};
+
+struct _GstPitchClass 
+{
+  GstElementClass parent_class;
+};
+
+GType gst_pitch_get_type (void);
+
+G_END_DECLS
+
+#endif /* __GST_PITCH_H__ */