sweeping effects rewrite that allows external plugins

2018-10-31 17:14:40 +11:00
parent 10347f9418
commit 01435f0d0c
63 changed files with 887 additions and 1033 deletions
@@ -0,0 +1,38 @@
+#include "volumeeffect.h"
+
+#include <QGridLayout>
+#include <QLabel>
+#include <QtMath>
+#include <stdint.h>
+
+#include "ui/labelslider.h"
+#include "ui/collapsiblewidget.h"
+
+VolumeEffect::VolumeEffect(Clip* c, const EffectMeta *em) : Effect(c, em) {
+	EffectRow* volume_row = add_row("Volume:");
+	volume_val = volume_row->add_field(EFFECT_FIELD_DOUBLE);
+	volume_val->id = "volume";
+	volume_val->set_double_minimum_value(0);
+
+	// set defaults
+	volume_val->set_double_default_value(100);
+
+	connect(volume_val, SIGNAL(changed()), this, SLOT(field_changed()));
+}
+
+void VolumeEffect::process_audio(double timecode_start, double timecode_end, quint8* samples, int nb_bytes, int) {
+	double interval = (timecode_end-timecode_start)/nb_bytes;
+	for (int i=0;i<nb_bytes;i+=2) {
+		double vol_val = log_volume(volume_val->get_double_value(timecode_start+(interval*i), true)*0.01);
+		qint32 samp = (qint16) (((samples[i+1] & 0xFF) << 8) | (samples[i] & 0xFF));
+		samp *= vol_val;
+		if (samp > INT16_MAX) {
+			samp = INT16_MAX;
+		} else if (samp < INT16_MIN) {
+			samp = INT16_MIN;
+		}
+
+		samples[i+1] = (quint8) (samp >> 8);
+		samples[i] = (quint8) samp;
+	}
+}