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

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

diff --git a/cinelerra-5.1/plugins/crossfade/crossfade.C b/cinelerra-5.1/plugins/crossfade/crossfade.C
new file mode 100644 (file)
index 0000000..105bb08
--- /dev/null
+++ b/cinelerra-5.1/plugins/crossfade/crossfade.C
@@ -0,0 +1,70 @@
+
+/*
+ * 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 "crossfade.h"
+#include "edl.inc"
+#include "language.h"
+#include "overlayframe.h"
+#include "samples.h"
+#include "vframe.h"
+
+
+
+
+REGISTER_PLUGIN(CrossfadeMain)
+
+
+
+
+CrossfadeMain::CrossfadeMain(PluginServer *server)
+ : PluginAClient(server)
+{
+}
+
+CrossfadeMain::~CrossfadeMain()
+{
+}
+
+const char* CrossfadeMain::plugin_title() { return _("Crossfade"); }
+int CrossfadeMain::is_transition() { return 1; }
+int CrossfadeMain::uses_gui() { return 0; }
+
+
+
+int CrossfadeMain::process_realtime(int64_t size, 
+       Samples *outgoing, 
+       Samples *incoming)
+{
+       double intercept = (double)PluginClient::get_source_position() / 
+               PluginClient::get_total_len();
+       double slope = (double)1 / PluginClient::get_total_len();
+
+//printf("CrossfadeMain::process_realtime %f %f\n", intercept, slope);
+       double *incoming_samples = incoming->get_data();
+       double *outgoing_samples = outgoing->get_data();
+       for(int i = 0; i < size; i++)
+       {
+               incoming_samples[i] = outgoing_samples[i] * ((double)1 - (slope * i + intercept)) + 
+                       incoming_samples[i] * (slope * i + intercept);
+       }
+
+       return 0;
+}