Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / plugins / gain / gain.C

diff --git a/cinelerra-5.1/plugins/gain/gain.C b/cinelerra-5.1/plugins/gain/gain.C
new file mode 100644 (file)
index 0000000..a83dc02
--- /dev/null
+++ b/cinelerra-5.1/plugins/gain/gain.C
@@ -0,0 +1,156 @@
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 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 "clip.h"
+#include "confirmsave.h"
+#include "bchash.h"
+#include "errorbox.h"
+#include "filexml.h"
+#include "language.h"
+#include "gain.h"
+#include "gainwindow.h"
+#include "samples.h"
+
+#include "vframe.h"
+
+#include <string.h>
+
+
+REGISTER_PLUGIN(Gain)
+
+
+GainConfig::GainConfig()
+{
+       level = 0.0;
+}
+
+int GainConfig::equivalent(GainConfig &that)
+{
+       return EQUIV(level, that.level);
+}
+
+void GainConfig::copy_from(GainConfig &that)
+{
+       this->level = that.level;
+}
+
+void GainConfig::interpolate(GainConfig &prev, 
+       GainConfig &next, 
+       int64_t prev_frame, 
+       int64_t next_frame, 
+       int64_t current_frame)
+{
+       double next_scale = (double)(current_frame - prev_frame) / (next_frame - prev_frame);
+       double prev_scale = (double)(next_frame - current_frame) / (next_frame - prev_frame);
+       level = prev.level * prev_scale + next.level * next_scale;
+}
+
+
+
+
+
+
+
+
+
+Gain::Gain(PluginServer *server)
+ : PluginAClient(server)
+{
+       
+}
+
+Gain::~Gain()
+{
+       
+}
+
+const char* Gain::plugin_title() { return _("Gain"); }
+int Gain::is_realtime() { return 1; }
+
+
+NEW_WINDOW_MACRO(Gain, GainWindow)
+LOAD_CONFIGURATION_MACRO(Gain, GainConfig)
+
+int Gain::process_realtime(int64_t size, Samples *input_ptr, Samples *output_ptr)
+{
+       load_configuration();
+
+       double gain = db.fromdb(config.level);
+       double *output_samples = output_ptr->get_data();
+       double *input_samples = input_ptr->get_data();
+
+       for(int64_t i = 0; i < size; i++)
+       {
+               output_samples[i] = input_samples[i] * gain;
+       }
+
+       return 0;
+}
+
+
+
+
+void Gain::save_data(KeyFrame *keyframe)
+{
+       FileXML output;
+
+// cause xml file to store data directly in text
+       output.set_shared_output(keyframe->get_data(), MESSAGESIZE);
+
+       output.tag.set_title("GAIN");
+       output.tag.set_property("LEVEL", config.level);
+       output.append_tag();
+       output.tag.set_title("/GAIN");
+       output.append_tag();
+       output.append_newline();
+       output.terminate_string();
+}
+
+void Gain::read_data(KeyFrame *keyframe)
+{
+       FileXML input;
+// cause xml file to read directly from text
+       input.set_shared_input(keyframe->get_data(), strlen(keyframe->get_data()));
+       int result = 0;
+
+       result = input.read_tag();
+
+       if(!result)
+       {
+               if(input.tag.title_is("GAIN"))
+               {
+                       config.level = input.tag.get_property("LEVEL", config.level);
+               }
+       }
+}
+
+void Gain::update_gui()
+{
+       if(thread)
+       {
+               load_configuration();
+               thread->window->lock_window();
+               ((GainWindow*)thread->window)->level->update(config.level);
+               thread->window->unlock_window();
+       }
+}
+
+