1 files changed, 107 insertions, 0 deletions
diff --git a/gst/goom2k1/lines.c b/gst/goom2k1/lines.c
new file mode 100644
index 0000000..3214e1d
--- /dev/null
+++ b/gst/goom2k1/lines.c
@@ -0,0 +1,107 @@
+/*
+ *  lines.c
+ *  iTunesXPlugIn
+ *
+ *  Created by guillaum on Tue Aug 14 2001.
+ *  Copyright (c) 2001 __CompanyName__. All rights reserved.
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "lines.h"
+#include <math.h>
+
+static inline unsigned char
+lighten (unsigned char value, unsigned char power)
+{
+  unsigned char i;
+
+  for (i = 0; i < power; i++)
+    value += (255 - value) / 5;
+  return value;
+}
+
+void
+goom_lines (GoomData * goomdata, gint16 data[2][512], unsigned int ID,
+    unsigned int *p, guint32 power)
+{
+  guint32 color1;
+  guint32 color2;
+  guint32 resolx = goomdata->resolx;
+  guint32 resoly = goomdata->resoly;
+  unsigned char *color = 1 + (unsigned char *) &color1;
+
+  switch (ID) {
+    case 0:                    /* Horizontal stereo lines */
+    {
+      color1 = 0x0000AA00;
+      color2 = 0x00AA0000;
+      break;
+    }
+
+    case 1:                    /* Stereo circles */
+    {
+      color1 = 0x00AA33DD;
+      color2 = 0x00AA33DD;
+      break;
+    }
+  }
+  *color = lighten (*color, power);
+  color++;
+  *color = lighten (*color, power);
+  color++;
+  *color = lighten (*color, power);
+  color = 1 + (unsigned char *) &color2;
+  *color = lighten (*color, power);
+  color++;
+  *color = lighten (*color, power);
+  color++;
+  *color = lighten (*color, power);
+
+  switch (ID) {
+    case 0:                    /* Horizontal stereo lines */
+    {
+      unsigned int i;
+
+      for (i = 0; i < 512; i++) {
+        guint32 plot;
+
+        plot = i * resolx / 512 + (resoly / 4 + data[0][i] / 1600) * resolx;
+        p[plot] = color1;
+        p[plot + 1] = color1;
+        plot = i * resolx / 512 + (resoly * 3 / 4 - data[1][i] / 1600) * resolx;
+        p[plot] = color2;
+        p[plot + 1] = color2;
+      }
+      break;
+    }
+
+    case 1:                    /* Stereo circles */
+    {
+      float z;
+      unsigned int monX = resolx / 2;
+      float monY = resoly / 4;
+      float monY2 = resoly / 2;
+
+      for (z = 0; z < 6.2832f; z += 1.0f / monY) {
+        /* float offset1 = 128+data[1][(unsigned int)(z*81.33f)])/200000; */
+        p[monX + (unsigned int) ((monY + ((float) resoly) * (128 +
+                        data[1][(unsigned int) (z * 81.33f)]) / 200000) *
+                cos (z) + resolx * (unsigned int) (monY2 + (monY +
+                        ((float) resoly) * (128 +
+                            data[1][(unsigned int) (z * 81.33f)]) / 400000) *
+                    sin (z)))] = color1;
+        p[monX + (unsigned int) ((monY - ((float) resoly) * (128 +
+                        data[0][(unsigned int) (z * 81.33f)]) / 200000) *
+                cos (z) + resolx * (unsigned int) (monY2 + (monY -
+                        ((float) resoly) * (128 +
+                            data[0][(unsigned int) (z * 81.33f)]) / 400000) *
+                    sin (z)))] = color2;
+      }
+      break;
+    }
+  }
+}