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diff --git a/cinelerra-5.1/plugins/compressormulti/comprmulti.h b/cinelerra-5.1/plugins/compressormulti/comprmulti.h
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+
+/*
+ * CINELERRA
+ * Copyright (C) 2008-2019 Adam Williams <broadcast at earthling dot net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef COMPRMULTI_H
+#define COMPRMULTI_H
+
+#include "bchash.inc"
+#include "compressortools.h"
+#include "fourier.h"
+#include "mutex.h"
+#include "pluginaclient.h"
+#include "samples.inc"
+#include "vframe.inc"
+
+class ComprMultiEffect;
+class ComprMultiFFT;
+
+//#define LOG_CROSSOVER
+#define DRAW_AFTER_BANDPASS
+
+#define TOTAL_BANDS 3
+
+class ComprMultiConfig : public CompressorConfigBase
+{
+public:
+	ComprMultiConfig();
+
+	void copy_from(ComprMultiConfig &that);
+	int equivalent(ComprMultiConfig &that);
+	void interpolate(ComprMultiConfig &prev, ComprMultiConfig &next,
+		int64_t prev_frame, int64_t next_frame, int64_t current_frame);
+	double q;
+	int window_size;
+};
+
+class ComprMultiFFT :public CrossfadeFFT
+{
+public:
+	ComprMultiFFT(ComprMultiEffect *plugin, int channel);
+	~ComprMultiFFT();
+	
+	int signal_process(int band);
+	int post_process(int band);
+	int read_samples(int64_t output_sample, int samples, Samples *buffer);
+
+	ComprMultiEffect *plugin;
+	int channel;
+	CompressorFreqFrame *frame;
+};
+
+// processing state of a single band
+class BandState
+{
+public:
+	BandState(ComprMultiEffect *plugin, int band);
+	~BandState();
+
+	void delete_dsp();
+	void reset();
+	void reconfigure();
+// calculate the envelope for only this band
+	void calculate_envelope();
+	void process_readbehind(int size,
+		int reaction_samples, int decay_samples, int trigger);
+	void process_readahead(int size, int preview_samples,
+		int reaction_samples, int decay_samples, int trigger);
+	void allocate_filtered(int new_size);
+
+// bandpass filter for this band
+	double *envelope;
+	int envelope_allocated;
+// The input for all channels with filtering by this band
+	Samples **filtered_buffer;
+// ending input value of smoothed input
+	double next_target;
+// starting input value of smoothed input
+	double previous_target;
+// samples between previous and next target value for readahead
+	int target_samples;
+// current sample from 0 to target_samples
+	int target_current_sample;
+// current smoothed input value
+	double current_value;
+// Temporaries for linear transfer
+	ArrayList<compressor_point_t> levels;
+	ComprMultiEffect *plugin;
+	int band;
+	CompressorEngine *engine;
+};
+
+class ComprMultiEffect : public PluginAClient
+{
+public:
+	ComprMultiEffect(PluginServer *server);
+	~ComprMultiEffect();
+
+	int is_multichannel();
+	int is_realtime();
+	void read_data(KeyFrame *keyframe);
+	void save_data(KeyFrame *keyframe);
+	int process_buffer(int64_t size, Samples **buffer,
+		int64_t start_position, int sample_rate);
+
+// calculate envelopes of all the bands
+	void calculate_envelope();
+
+	void allocate_input(int new_size);
+
+	void reset();
+	void update_gui();
+	void render_stop();
+	void delete_dsp();
+	void dump_frames();
+
+	PLUGIN_CLASS_MEMBERS(ComprMultiConfig)
+
+#ifndef DRAW_AFTER_BANDPASS
+// The out of band data for each channel with readahead
+	Samples **input_buffer;
+// Number of samples in the unfiltered input buffers
+	int64_t input_size;
+// input buffer size being calculated by the FFT readers
+	int64_t new_input_size;
+#endif // !DRAW_AFTER_BANDPASS
+// Starting sample of the input buffer relative to project in the requested rate.
+	int64_t input_start;
+// Number of samples in the filtered input buffers
+	int64_t filtered_size;
+
+// detect seeking
+	int64_t last_position;
+
+// count spectrogram frames for each band
+	int new_spectrogram_frames[TOTAL_BANDS];
+
+	BandState *band_states[TOTAL_BANDS];
+// The big FFT with multiple channels & multiple bands extracted per channel.
+	ComprMultiFFT **fft;
+
+	int need_reconfigure;
+	double start_pos;
+	int dir;
+};
+
+
+#endif