--- /dev/null
+
+/*
+ * 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 CHORUS_H
+#define CHORUS_H
+
+class Chorus;
+
+#include "pluginaclient.h"
+
+class ChorusConfig
+{
+public:
+ ChorusConfig();
+
+
+ int equivalent(ChorusConfig &that);
+ void copy_from(ChorusConfig &that);
+ void interpolate(ChorusConfig &prev,
+ ChorusConfig &next,
+ int64_t prev_frame,
+ int64_t next_frame,
+ int64_t current_frame);
+ void boundaries();
+
+
+// number of voices per channel to be rendered
+ int voices;
+// starting phase offset in ms
+ float offset;
+// how much the phase oscillates in ms
+ float depth;
+// rate of phase oscillation in Hz
+ float rate;
+// how much of input signal
+ float wetness;
+};
+
+// state of a single voice
+class Voice
+{
+public:
+ Voice();
+
+// position in the waveform table
+ int table_offset;
+// source channel
+ int src_channel;
+// destination channel
+ int dst_channel;
+};
+
+
+// each sample in the flanging waveform
+typedef struct
+{
+ double input_sample;
+} flange_sample_t;
+
+
+class Chorus : public PluginAClient
+{
+public:
+ Chorus(PluginServer *server);
+ ~Chorus();
+
+ void update_gui();
+
+
+
+// required for all realtime/multichannel plugins
+ PLUGIN_CLASS_MEMBERS(ChorusConfig);
+ int process_buffer(int64_t size,
+ Samples **buffer,
+ int64_t start_position,
+ int sample_rate);
+ void reallocate_dsp(int new_dsp_allocated);
+ void reallocate_history(int new_allocation);
+ int total_voices();
+
+ int is_realtime();
+ int is_synthesis();
+ int is_multichannel();
+ void save_data(KeyFrame *keyframe);
+ void read_data(KeyFrame *keyframe);
+
+ double **history_buffer;
+// Number of samples in the history buffer
+ int64_t history_size;
+
+// the temporary all voices are painted on
+ double **dsp_in;
+ int dsp_in_allocated;
+
+ Voice *voices;
+// flanging table is a whole number of samples that repeats
+// always an even number
+ int table_size;
+ flange_sample_t *flanging_table;
+
+// detect seeking
+ int64_t last_position;
+
+ int need_reconfigure;
+};
+
+
+
+
+class ChorusWindow : public PluginClientWindow
+{
+public:
+ ChorusWindow(Chorus *plugin);
+ ~ChorusWindow();
+
+ void create_objects();
+ void update();
+ void param_updated();
+
+ Chorus *plugin;
+ PluginParam *voices;
+ PluginParam *offset;
+ PluginParam *depth;
+ PluginParam *rate;
+ PluginParam *wetness;
+};
+
+
+
+
+#endif
+
+
+