gstreamer/subprojects/gst-plugins-good/gst/spectrum/gstspectrum.h

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/* GStreamer
* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
* Copyright (C) <2009> Sebastian Dröge <sebastian.droege@collabora.co.uk>
*
* 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., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef __GST_SPECTRUM_H__
#define __GST_SPECTRUM_H__
#include <gst/gst.h>
#include <gst/audio/gstaudiofilter.h>
#include <gst/fft/gstfftf32.h>
G_BEGIN_DECLS
#define GST_TYPE_SPECTRUM (gst_spectrum_get_type())
#define GST_SPECTRUM(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SPECTRUM,GstSpectrum))
#define GST_IS_SPECTRUM(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SPECTRUM))
Fix more gobject macros: obj<->klass, GstXXX<->GstXXXClass Original commit message from CVS: * ext/alsaspdif/alsaspdifsink.h: * ext/amrwb/gstamrwbdec.h: * ext/amrwb/gstamrwbenc.h: * ext/amrwb/gstamrwbparse.h: * ext/arts/gst_arts.h: * ext/artsd/gstartsdsink.h: * ext/audiofile/gstafparse.h: * ext/audiofile/gstafsink.h: * ext/audiofile/gstafsrc.h: * ext/audioresample/gstaudioresample.h: * ext/bz2/gstbz2dec.h: * ext/bz2/gstbz2enc.h: * ext/dirac/gstdiracdec.h: * ext/directfb/dfbvideosink.h: * ext/divx/gstdivxdec.h: * ext/divx/gstdivxenc.h: * ext/dts/gstdtsdec.h: * ext/faac/gstfaac.h: * ext/gsm/gstgsmdec.h: * ext/gsm/gstgsmenc.h: * ext/ivorbis/vorbisenc.h: * ext/libfame/gstlibfame.h: * ext/nas/nassink.h: * ext/neon/gstneonhttpsrc.h: * ext/polyp/polypsink.h: * ext/sdl/sdlaudiosink.h: * ext/sdl/sdlvideosink.h: * ext/shout/gstshout.h: * ext/snapshot/gstsnapshot.h: * ext/sndfile/gstsf.h: * ext/swfdec/gstswfdec.h: * ext/tarkin/gsttarkindec.h: * ext/tarkin/gsttarkinenc.h: * ext/theora/theoradec.h: * ext/wavpack/gstwavpackdec.h: * ext/wavpack/gstwavpackparse.h: * ext/xine/gstxine.h: * ext/xvid/gstxviddec.h: * ext/xvid/gstxvidenc.h: * gst/cdxaparse/gstcdxaparse.h: * gst/cdxaparse/gstcdxastrip.h: * gst/colorspace/gstcolorspace.h: * gst/festival/gstfestival.h: * gst/freeze/gstfreeze.h: * gst/gdp/gstgdpdepay.h: * gst/gdp/gstgdppay.h: * gst/modplug/gstmodplug.h: * gst/mpeg1sys/gstmpeg1systemencode.h: * gst/mpeg1videoparse/gstmp1videoparse.h: * gst/mpeg2sub/gstmpeg2subt.h: * gst/mpegaudioparse/gstmpegaudioparse.h: * gst/multifilesink/gstmultifilesink.h: * gst/overlay/gstoverlay.h: * gst/playondemand/gstplayondemand.h: * gst/qtdemux/qtdemux.h: * gst/rtjpeg/gstrtjpegdec.h: * gst/rtjpeg/gstrtjpegenc.h: * gst/smooth/gstsmooth.h: * gst/smoothwave/gstsmoothwave.h: * gst/spectrum/gstspectrum.h: * gst/speed/gstspeed.h: * gst/stereo/gststereo.h: * gst/switch/gstswitch.h: * gst/tta/gstttadec.h: * gst/tta/gstttaparse.h: * gst/videodrop/gstvideodrop.h: * gst/xingheader/gstxingmux.h: * sys/directdraw/gstdirectdrawsink.h: * sys/directsound/gstdirectsoundsink.h: * sys/dxr3/dxr3audiosink.h: * sys/dxr3/dxr3spusink.h: * sys/dxr3/dxr3videosink.h: * sys/qcam/gstqcamsrc.h: * sys/vcd/vcdsrc.h: Fix more gobject macros: obj<->klass, GstXXX<->GstXXXClass
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#define GST_SPECTRUM_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), GST_TYPE_SPECTRUM,GstSpectrumClass))
#define GST_IS_SPECTRUM_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass), GST_TYPE_SPECTRUM))
typedef struct _GstSpectrum GstSpectrum;
typedef struct _GstSpectrumClass GstSpectrumClass;
typedef struct _GstSpectrumChannel GstSpectrumChannel;
typedef void (*GstSpectrumInputData)(const guint8 * in, gfloat * out,
guint len, guint channels, gfloat max_value, guint op, guint nfft);
struct _GstSpectrumChannel
{
gfloat *input;
gfloat *input_tmp;
GstFFTF32Complex *freqdata;
gfloat *spect_magnitude; /* accumulated mangitude and phase */
gfloat *spect_phase; /* will be scaled by num_fft before sending */
GstFFTF32 *fft_ctx;
};
struct _GstSpectrum
{
GstAudioFilter parent;
/* properties */
gboolean post_messages; /* whether or not to post messages */
gboolean message_magnitude;
gboolean message_phase;
guint64 interval; /* how many nanoseconds between emits */
guint64 frames_per_interval; /* how many frames per interval */
guint64 frames_todo;
guint bands; /* number of spectrum bands */
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gint threshold; /* energy level threshold */
gboolean multi_channel; /* send separate channel results */
guint64 num_frames; /* frame count (1 sample per channel)
* since last emit */
guint64 num_fft; /* number of FFTs since last emit */
GstClockTime message_ts; /* starttime for next message */
/* <private> */
GstSpectrumChannel *channel_data;
guint num_channels;
guint input_pos;
guint64 error_per_interval;
guint64 accumulated_error;
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GMutex lock;
GstSpectrumInputData input_data;
};
struct _GstSpectrumClass
{
GstAudioFilterClass parent_class;
};
GType gst_spectrum_get_type (void);
GST_ELEMENT_REGISTER_DECLARE (spectrum);
G_END_DECLS
#endif /* __GST_SPECTRUM_H__ */