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Diffstat (limited to 'gst/audiofx/audiochebband.h')
-rw-r--r-- | gst/audiofx/audiochebband.h | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/gst/audiofx/audiochebband.h b/gst/audiofx/audiochebband.h new file mode 100644 index 00000000..e8c58074 --- /dev/null +++ b/gst/audiofx/audiochebband.h @@ -0,0 +1,79 @@ +/* + * 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_BAND_H__ +#define __GST_AUDIO_CHEBYSHEV_FREQ_BAND_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_BAND (gst_audio_chebyshev_freq_band_get_type()) +#define GST_AUDIO_CHEBYSHEV_FREQ_BAND(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_AUDIO_CHEBYSHEV_FREQ_BAND,GstAudioChebyshevFreqBand)) +#define GST_IS_AUDIO_CHEBYSHEV_FREQ_BAND(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_AUDIO_CHEBYSHEV_FREQ_BAND)) +#define GST_AUDIO_CHEBYSHEV_FREQ_BAND_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_AUDIO_CHEBYSHEV_FREQ_BAND,GstAudioChebyshevFreqBandClass)) +#define GST_IS_AUDIO_CHEBYSHEV_FREQ_BAND_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_AUDIO_CHEBYSHEV_FREQ_BAND)) +#define GST_AUDIO_CHEBYSHEV_FREQ_BAND_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_AUDIO_CHEBYSHEV_FREQ_BAND,GstAudioChebyshevFreqBandClass)) +typedef struct _GstAudioChebyshevFreqBand GstAudioChebyshevFreqBand; +typedef struct _GstAudioChebyshevFreqBandClass GstAudioChebyshevFreqBandClass; + +typedef void (*GstAudioChebyshevFreqBandProcessFunc) (GstAudioChebyshevFreqBand *, guint8 *, guint); + +typedef struct +{ + gdouble *x; + gint x_pos; + gdouble *y; + gint y_pos; +} GstAudioChebyshevFreqBandChannelCtx; + +struct _GstAudioChebyshevFreqBand +{ + GstAudioFilter audiofilter; + + gint mode; + gint type; + gint poles; + gfloat lower_frequency; + gfloat upper_frequency; + gfloat ripple; + + /* < private > */ + GstAudioChebyshevFreqBandProcessFunc process; + + gboolean have_coeffs; + gdouble *a; + gint num_a; + gdouble *b; + gint num_b; + GstAudioChebyshevFreqBandChannelCtx *channels; +}; + +struct _GstAudioChebyshevFreqBandClass +{ + GstAudioFilterClass parent; +}; + +GType gst_audio_chebyshev_freq_band_get_type (void); + +G_END_DECLS +#endif /* __GST_AUDIO_CHEBYSHEV_FREQ_BAND_H__ */ |