--- /dev/null
+
+/*
+ * CINELERRA
+ * Copyright (C) 2017-2019 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
+ *
+ */
+
+#include "chorus.h"
+#include "clip.h"
+#include "confirmsave.h"
+#include "bchash.h"
+#include "bcsignals.h"
+#include "errorbox.h"
+#include "filexml.h"
+#include "language.h"
+#include "samples.h"
+#include "theme.h"
+#include "transportque.inc"
+#include "units.h"
+
+#include "vframe.h"
+
+#include <math.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+
+// min rate for the GUI
+#define MIN_RATE 0.0
+// min rate to avoid division by zero
+#define MIN_RATE2 0.10
+#define MAX_RATE 10.0
+#define MIN_OFFSET 0.0
+#define MAX_OFFSET 100.0
+#define MIN_DEPTH 0.0
+#define MAX_DEPTH 100.0
+#define MIN_VOICES 1
+#define MAX_VOICES 64
+
+
+
+PluginClient* new_plugin(PluginServer *server)
+{
+ return new Chorus(server);
+}
+
+
+
+Chorus::Chorus(PluginServer *server)
+ : PluginAClient(server)
+{
+ srand(time(0));
+ need_reconfigure = 1;
+ dsp_in = 0;
+ dsp_in_allocated = 0;
+ voices = 0;
+ last_position = -1;
+ flanging_table = 0;
+ table_size = 0;
+ history_buffer = 0;
+ history_size = 0;
+}
+
+Chorus::~Chorus()
+{
+ if(dsp_in)
+ {
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ delete [] dsp_in[i];
+ }
+ delete [] dsp_in;
+ }
+
+ if(history_buffer)
+ {
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ delete [] history_buffer[i];
+ }
+ delete [] history_buffer;
+ }
+
+ delete [] voices;
+ delete [] flanging_table;
+}
+
+const char* Chorus::plugin_title() { return N_("Chorus"); }
+int Chorus::is_realtime() { return 1; }
+int Chorus::is_multichannel() { return 1; }
+int Chorus::is_synthesis() { return 1; }
+
+
+int Chorus::process_buffer(int64_t size,
+ Samples **buffer,
+ int64_t start_position,
+ int sample_rate)
+{
+ need_reconfigure |= load_configuration();
+// printf("Chorus::process_buffer %d start_position=%ld size=%ld need_reconfigure=%d buffer_offset=%d\n",
+// __LINE__,
+// start_position,
+// size,
+// need_reconfigure,
+// buffer[0]->get_offset());
+
+
+ if(!dsp_in)
+ {
+ dsp_in = new double*[PluginClient::total_in_buffers];
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ dsp_in[i] = 0;
+ }
+ }
+
+// reset after seeking & configuring
+ if(last_position != start_position || need_reconfigure)
+ {
+ need_reconfigure = 0;
+
+ if(flanging_table)
+ {
+ delete [] flanging_table;
+ }
+
+// flanging waveform is a whole number of samples that repeats
+ if(config.rate < MIN_RATE2)
+ {
+ table_size = 256;
+ }
+ else
+ {
+ table_size = (int)((double)sample_rate / config.rate);
+ if(table_size % 2)
+ {
+ table_size++;
+ }
+ }
+
+
+// printf("Chorus::process_buffer %d table_size=%d\n",
+// __LINE__,
+// table_size);
+
+ flanging_table = new flange_sample_t[table_size];
+ double depth_samples = config.depth *
+ sample_rate / 1000;
+ double half_depth = depth_samples / 2;
+ int half_table = table_size / 2;
+ int quarter_table = table_size / 4;
+// slow down over time to read from history buffer
+// double ratio = (double)depth_samples /
+// half;
+ double coef = (double)half_depth /
+ pow(quarter_table, 2);
+
+// printf("Chorus::process_buffer %d %f %f\n",
+// __LINE__,
+// depth_samples,
+// sample_rate / 2 - depth_samples);
+ for(int i = 0; i <= quarter_table; i++)
+ {
+// double input_sample = -i * ratio;
+ double input_sample = -(coef * pow(i, 2));
+// printf("Chorus::process_buffer %d i=%d input_sample=%f\n",
+// __LINE__,
+// i,
+// input_sample);
+ flanging_table[i].input_sample = input_sample;
+ }
+
+ for(int i = 0; i <= quarter_table; i++)
+ {
+ double input_sample = -depth_samples +
+ (coef * pow(quarter_table - i, 2));
+// printf("Chorus::process_buffer %d i=%d input_sample=%f\n",
+// __LINE__,
+// quarter_table + i,
+// input_sample);
+ flanging_table[quarter_table + i].input_sample = input_sample;
+ }
+
+// rounding error may drop quarter_table * 2
+ flanging_table[half_table].input_sample = -depth_samples;
+
+ for(int i = 1; i < half_table; i++)
+ {
+ flanging_table[half_table + i].input_sample =
+ flanging_table[half_table - i].input_sample;
+// printf("Chorus::process_buffer %d i=%d input_sample=%f\n",
+// __LINE__,
+// i,
+// input_sample);
+ }
+
+
+// dump the table
+// for(int i = 0; i < table_size; i++)
+// {
+// printf("Chorus::process_buffer %d i=%d input_sample=%f\n",
+// __LINE__,
+// i,
+// flanging_table[i].input_sample);
+// }
+
+ if(!history_buffer)
+ {
+ history_buffer = new double*[PluginClient::total_in_buffers];
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ history_buffer[i] = 0;
+ }
+ history_size = 0;
+ }
+
+// compute the phase position from the keyframe position & the phase offset
+ int64_t prev_position = edl_to_local(
+ get_prev_keyframe(
+ get_source_position())->position);
+
+ if(prev_position == 0)
+ {
+ prev_position = get_source_start();
+ }
+
+ if(voices)
+ {
+ delete [] voices;
+ voices = 0;
+ }
+
+ if(!voices)
+ {
+ voices = new Voice[total_voices()];
+ }
+
+ for(int i = 0; i < total_voices(); i++)
+ {
+ Voice *voice = &voices[i];
+ voice->src_channel = i / config.voices;
+ voice->dst_channel = i % PluginClient::total_in_buffers;
+
+// randomize the starting phase
+ voice->table_offset = (int64_t)(start_position -
+ prev_position +
+ i * (table_size / 2) / total_voices()) % (table_size / 2);
+// (rand() % (table_size / 2))) % (table_size / 2);
+// printf("Chorus::process_buffer %d i=%d src=%d dst=%d input_sample=%f\n",
+// __LINE__,
+// i,
+// voice->src_channel,
+// voice->dst_channel,
+// flanging_table[voice->table_offset].input_sample);
+ }
+ }
+
+ int starting_offset = (int)(config.offset * sample_rate / 1000);
+ reallocate_dsp(size);
+// reallocate_history(starting_offset + depth_offset + 1);
+// always use the maximum history, in case of keyframes
+ reallocate_history((MAX_OFFSET + MAX_DEPTH) * sample_rate / 1000 + 1);
+
+// read the input
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ read_samples(buffer[i],
+ i,
+ sample_rate,
+ start_position,
+ size);
+ }
+
+
+
+// paint the voices
+ double wetness = DB::fromdb(config.wetness);
+ if(config.wetness <= INFINITYGAIN)
+ {
+ wetness = 0;
+ }
+
+// input signal
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ double *output = dsp_in[i];
+ double *input = buffer[i]->get_data();
+ for(int j = 0; j < size; j++)
+ {
+ output[j] = input[j] * wetness;
+ }
+ }
+
+// delayed signals
+ for(int i = 0; i < total_voices(); i++)
+ {
+ Voice *voice = &voices[i];
+ double *output = dsp_in[voice->dst_channel];
+ double *input = buffer[voice->src_channel]->get_data();
+ double *history = history_buffer[voice->src_channel];
+
+// printf("Chorus::process_buffer %d table_offset=%d table=%f\n",
+// __LINE__,
+// voice->table_offset,
+// flanging_table[table_size / 2].input_sample);
+
+//static int debug = 1;
+ int table_offset = voice->table_offset;
+ for(int j = 0; j < size; j++)
+ {
+ flange_sample_t *table = &flanging_table[table_offset];
+ double input_sample = j - starting_offset + table->input_sample;
+
+// values to interpolate
+ double sample1;
+ double sample2;
+ int input_sample1 = (int)(input_sample);
+ int input_sample2 = (int)(input_sample + 1);
+ double fraction1 = (double)((int)(input_sample + 1)) - input_sample;
+ double fraction2 = 1.0 - fraction1;
+ if(input_sample1 < 0)
+ {
+ sample1 = history[history_size + input_sample1];
+ }
+ else
+ {
+ sample1 = input[input_sample1];
+ }
+
+ if(input_sample2 < 0)
+ {
+ sample2 = history[history_size + input_sample2];
+ }
+ else
+ {
+ sample2 = input[input_sample2];
+ }
+ output[j] += sample1 * fraction1 + sample2 * fraction2;
+// if(start_position + j > 49600 && start_position + j < 49700)
+// printf("%ld %d input_sample=%f sample1=%f sample2=%f output=%f\n",
+// start_position + j, table_offset, input_sample, sample1, sample2, output[j]);
+
+ if(config.rate >= MIN_RATE2)
+ {
+ table_offset++;
+ table_offset %= table_size;
+ }
+ }
+//debug = 0;
+ voice->table_offset = table_offset;
+ }
+
+
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+// history is bigger than input buffer. Copy entire input buffer.
+ if(history_size > size)
+ {
+ memcpy(history_buffer[i],
+ history_buffer[i] + size,
+ (history_size - size) * sizeof(double));
+ memcpy(history_buffer[i] + (history_size - size),
+ buffer[i]->get_data(),
+ size * sizeof(double));
+ }
+ else
+ {
+// input is bigger than history buffer. Copy only history size
+ memcpy(history_buffer[i],
+ buffer[i]->get_data() + size - history_size,
+ history_size * sizeof(double));
+ }
+ }
+//printf("Chorus::process_buffer %d history_size=%ld\n", __LINE__, history_size);
+
+// copy the DSP buffer to the output
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ memcpy(buffer[i]->get_data(), dsp_in[i], size * sizeof(double));
+ }
+
+
+ if(get_direction() == PLAY_FORWARD)
+ {
+ last_position = start_position + size;
+ }
+ else
+ {
+ last_position = start_position - size;
+ }
+
+
+
+ return 0;
+}
+
+
+int Chorus::total_voices()
+{
+ return PluginClient::total_in_buffers * config.voices;
+}
+
+
+void Chorus::reallocate_dsp(int new_dsp_allocated)
+{
+ if(new_dsp_allocated > dsp_in_allocated)
+ {
+// copy samples already read into the new buffers
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ double *old_dsp = dsp_in[i];
+ double *new_dsp = new double[new_dsp_allocated];
+ if(old_dsp)
+ {
+ delete [] old_dsp;
+ }
+ dsp_in[i] = new_dsp;
+ }
+ dsp_in_allocated = new_dsp_allocated;
+ }
+}
+
+void Chorus::reallocate_history(int new_size)
+{
+ if(new_size != history_size)
+ {
+// copy samples already read into the new buffers
+ for(int i = 0; i < PluginClient::total_in_buffers; i++)
+ {
+ double *old_history = 0;
+
+ if(history_buffer)
+ {
+ old_history = history_buffer[i];
+ }
+ double *new_history = new double[new_size];
+ bzero(new_history, sizeof(double) * new_size);
+ if(old_history)
+ {
+ int copy_size = MIN(new_size, history_size);
+ memcpy(new_history,
+ old_history + history_size - copy_size,
+ sizeof(double) * copy_size);
+ delete [] old_history;
+ }
+ history_buffer[i] = new_history;
+ }
+ history_size = new_size;
+ }
+}
+
+
+
+
+
+NEW_WINDOW_MACRO(Chorus, ChorusWindow)
+
+
+LOAD_CONFIGURATION_MACRO(Chorus, ChorusConfig)
+
+
+void Chorus::save_data(KeyFrame *keyframe)
+{
+ FileXML output;
+
+// cause xml file to store data directly in text
+ output.set_shared_output(keyframe->xbuf);
+
+ output.tag.set_title("CHORUS");
+ output.tag.set_property("VOICES", config.voices);
+ output.tag.set_property("OFFSET", config.offset);
+ output.tag.set_property("DEPTH", config.depth);
+ output.tag.set_property("RATE", config.rate);
+ output.tag.set_property("WETNESS", config.wetness);
+ output.append_tag();
+ output.append_newline();
+
+ output.terminate_string();
+}
+
+void Chorus::read_data(KeyFrame *keyframe)
+{
+ FileXML input;
+// cause xml file to read directly from text
+ input.set_shared_input(keyframe->xbuf);
+ int result = 0;
+
+ result = input.read_tag();
+
+ if(!result)
+ {
+ if(input.tag.title_is("CHORUS"))
+ {
+ config.voices = input.tag.get_property("VOICES", config.voices);
+ config.offset = input.tag.get_property("OFFSET", config.offset);
+ config.depth = input.tag.get_property("DEPTH", config.depth);
+ config.rate = input.tag.get_property("RATE", config.rate);
+ config.wetness = input.tag.get_property("WETNESS", config.wetness);
+ }
+ }
+
+ config.boundaries();
+}
+
+void Chorus::update_gui()
+{
+ if(thread)
+ {
+ if(load_configuration())
+ {
+ thread->window->lock_window("Chorus::update_gui 1");
+ ((ChorusWindow*)thread->window)->update();
+ thread->window->unlock_window();
+ }
+ }
+}
+
+
+
+
+
+
+
+
+Voice::Voice()
+{
+}
+
+
+
+ChorusConfig::ChorusConfig()
+{
+ voices = 1;
+ offset = 0.00;
+ depth = 10.0;
+ rate = 0.20;
+ wetness = 0;
+}
+
+int ChorusConfig::equivalent(ChorusConfig &that)
+{
+ return (voices == that.voices) &&
+ EQUIV(offset, that.offset) &&
+ EQUIV(depth, that.depth) &&
+ EQUIV(rate, that.rate) &&
+ EQUIV(wetness, that.wetness);
+}
+
+void ChorusConfig::copy_from(ChorusConfig &that)
+{
+ voices = that.voices;
+ offset = that.offset;
+ depth = that.depth;
+ rate = that.rate;
+ wetness = that.wetness;
+}
+
+void ChorusConfig::interpolate(ChorusConfig &prev,
+ ChorusConfig &next,
+ int64_t prev_frame,
+ int64_t next_frame,
+ int64_t current_frame)
+{
+ copy_from(prev);
+}
+
+void ChorusConfig::boundaries()
+{
+ CLAMP(voices, MIN_VOICES, MAX_VOICES);
+ CLAMP(offset, MIN_OFFSET, MAX_OFFSET);
+ CLAMP(depth, MIN_DEPTH, MAX_DEPTH);
+ CLAMP(rate, MIN_RATE, MAX_RATE);
+ CLAMP(wetness, INFINITYGAIN, 0.0);
+}
+
+
+
+
+
+
+
+
+
+
+
+#define WINDOW_W xS(400)
+#define WINDOW_H yS(165)
+
+ChorusWindow::ChorusWindow(Chorus *plugin)
+ : PluginClientWindow(plugin,
+ WINDOW_W,
+ WINDOW_H,
+ WINDOW_W,
+ WINDOW_H,
+ 0)
+{
+ this->plugin = plugin;
+}
+
+ChorusWindow::~ChorusWindow()
+{
+ delete voices;
+ delete offset;
+ delete depth;
+ delete rate;
+ delete wetness;
+}
+
+void ChorusWindow::create_objects()
+{
+ int margin = plugin->get_theme()->widget_border + xS(4);
+ int x1 = margin;
+ int x2 = xS(200), y = margin -xS(4);
+ int x3 = x2 + BC_Pot::calculate_w() + margin;
+ int x4 = x3 + BC_Pot::calculate_w() + margin;
+ int text_w = get_w() - margin - x4;
+ int height = BC_TextBox::calculate_h(this, MEDIUMFONT, 1, 1) + margin -xS(4);
+
+
+ voices = new PluginParam(plugin,
+ this,
+ x1,
+ x2,
+ x4,
+ y,
+ text_w,
+ &plugin->config.voices, // output_i
+ 0, // output_f
+ 0, // output_q
+ "Voices per channel:",
+ MIN_VOICES, // min
+ MAX_VOICES); // max
+ voices->initialize();
+ y += height;
+
+ offset = new PluginParam(plugin,
+ this,
+ x1,
+ x3,
+ x4,
+ y,
+ text_w,
+ 0, // output_i
+ &plugin->config.offset, // output_f
+ 0, // output_q
+ "Phase offset (ms):",
+ MIN_OFFSET, // min
+ MAX_OFFSET); // max
+ offset->set_precision(3);
+ offset->initialize();
+ y += height;
+
+
+ depth = new PluginParam(plugin,
+ this,
+ x1,
+ x2,
+ x4,
+ y,
+ text_w,
+ 0, // output_i
+ &plugin->config.depth, // output_f
+ 0, // output_q
+ "Depth (ms):",
+ MIN_DEPTH, // min
+ MAX_DEPTH); // max
+ depth->set_precision(3);
+ depth->initialize();
+ y += height;
+
+
+
+ rate = new PluginParam(plugin,
+ this,
+ x1,
+ x3,
+ x4,
+ y,
+ text_w,
+ 0, // output_i
+ &plugin->config.rate, // output_f
+ 0, // output_q
+ "Rate (Hz):",
+ MIN_RATE, // min
+ MAX_RATE); // max
+ rate->set_precision(3);
+ rate->initialize();
+ y += height;
+
+
+
+ wetness = new PluginParam(plugin,
+ this,
+ x1,
+ x2,
+ x4,
+ y,
+ text_w,
+ 0, // output_i
+ &plugin->config.wetness, // output_f
+ 0, // output_q
+ "Wetness (db):",
+ INFINITYGAIN, // min
+ 0); // max
+ wetness->initialize();
+ y += height;
+
+ show_window();
+}
+
+void ChorusWindow::update()
+{
+ voices->update(0, 0);
+ offset->update(0, 0);
+ depth->update(0, 0);
+ rate->update(0, 0);
+ wetness->update(0, 0);
+}
+
+void ChorusWindow::param_updated()
+{
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
projects / goodguy / cinelerra.git / blobdiff