102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Rov Juvano <rovjuvano@users.sourceforge.net>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_SCALETEMPO_H__
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#define __GST_SCALETEMPO_H__
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#include <gst/gst.h>
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#include <gst/base/gstbasetransform.h>
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G_BEGIN_DECLS
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#define GST_TYPE_SCALETEMPO (gst_scaletempo_get_type())
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#define GST_SCALETEMPO(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_SCALETEMPO, GstScaletempo))
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#define GST_SCALETEMPO_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_SCALETEMPO, GstScaletempoClass))
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#define GST_IS_SCALETEMPO(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_SCALETEMPO))
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#define GST_IS_SCALETEMPO_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_SCALETEMPO))
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typedef struct _GstScaletempo GstScaletempo;
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typedef struct _GstScaletempoClass GstScaletempoClass;
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typedef struct _GstScaletempoPrivate GstScaletempoPrivate;
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struct _GstScaletempo
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{
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GstBaseTransform element;
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gdouble scale;
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gboolean reverse;
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/* parameters */
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guint ms_stride;
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gdouble percent_overlap;
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guint ms_search;
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/* caps */
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GstAudioFormat format;
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guint samples_per_frame; /* AKA number of channels */
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guint bytes_per_sample;
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guint bytes_per_frame;
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guint sample_rate;
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/* stride */
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gdouble frames_stride_scaled;
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gdouble frames_stride_error;
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guint bytes_stride;
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gdouble bytes_stride_scaled;
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guint bytes_queue_max;
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guint bytes_queued;
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guint bytes_to_slide;
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gint8 *buf_queue;
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/* overlap */
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guint samples_overlap;
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guint samples_standing;
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guint bytes_overlap;
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guint bytes_standing;
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gpointer buf_overlap;
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gpointer table_blend;
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void (*output_overlap) (GstScaletempo * scaletempo, gpointer out_buf, guint bytes_off);
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/* best overlap */
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guint frames_search;
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gpointer buf_pre_corr;
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gpointer table_window;
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guint (*best_overlap_offset) (GstScaletempo * scaletempo);
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/* gstreamer */
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GstSegment in_segment, out_segment;
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GstClockTime latency;
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/* threads */
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gboolean reinit_buffers;
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};
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struct _GstScaletempoClass
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{
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GstBaseTransformClass parent_class;
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};
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GType gst_scaletempo_get_type (void);
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GST_ELEMENT_REGISTER_DECLARE (scaletempo);
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G_END_DECLS
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#endif /* __GST_SCALETEMPO_H__ */
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