From 820302a2a8236ea17c998c9d0b28b0eb97d2c7da Mon Sep 17 00:00:00 2001
From: Steffen Pohle <steffen@gulpe.de>
Date: Tue, 20 Jan 2026 21:45:26 +0100
Subject: [PATCH] dumpfile seem to work

---
 debayer.cc | 92 ++++++++++++++++++++++++++++++++++++++++--------------
 1 file changed, 69 insertions(+), 23 deletions(-)

diff --git a/debayer.cc b/debayer.cc
index e874bb2..04028ea 100644
--- a/debayer.cc
+++ b/debayer.cc
@@ -371,17 +371,9 @@ void debayer_grbg8_bilinear (uint8_t * src, int src_w, int src_h,
 }
 
 
-#define P_U (*(psrc-src_w*(10/8)))
-#define P_D (*(psrc+src_w*(10/8)))
-#define P_L (*(psrc-1))
-#define P_R (*(psrc+1))
-#define P_UL (*(psrc-1-src_w*(10/8)))
-#define P_UR (*(psrc+1-src_w*(10/8)))
-#define P_DL (*(psrc-1+src_w*(10/8)))
-#define P_DR (*(psrc+1+src_w*(10/8)))
 void debayer_rggb10packet_simple (uint8_t * src, int src_w, int src_h,
                               uint8_t  * dst, int dst_w, int dst_h) {
-	int s, d;
+/*	int s, d;
 	int xs, ys, xd, yd;
 	unsigned char r, g, b;
 	int max = dst_w * dst_h * 3;
@@ -441,7 +433,7 @@ void debayer_rggb10packet_simple (uint8_t * src, int src_w, int src_h,
 		//	if (xs >= src_w -1) psrc += src_w / 4;
 			if (xs && (xs % 4 == 0)) psrc++;
 		}
-	}
+	} */
 };
 
 
@@ -465,26 +457,80 @@ void debayer_rggb10packet_bilinear (uint8_t * src, int src_w, int src_h,
 };
 
 
+inline int swap16(uint16_t i) {
+  uint16_t r;
+  
+  *(((unsigned char *)&r)) = *(((unsigned char *)&i)+1);
+  *(((unsigned char *)&r)+1) = *(((unsigned char *)&i));
+  return r;
+}
+
+#define PRGGB10_U ((uint16_t)(*(psrc-src_w*2)))
+#define PRGGB10_D ((uint16_t)(*(psrc+src_w*2)))
+#define PRGGB10_L ((uint16_t)(*(psrc-2)))
+#define PRGGB10_R ((uint16_t)(*(psrc+2)))
+#define PRGGB10_UL ((uint16_t)(*(psrc-2-src_w*2)))
+#define PRGGB10_UR ((uint16_t)(*(psrc+2-src_w*2)))
+#define PRGGB10_DL ((uint16_t)(*(psrc-2-src_w*2)))
+#define PRGGB10_DR ((uint16_t)(*(psrc+2+src_w*2)))
 void debayer_rggb10_simple (uint8_t * src, int src_w, int src_h,
-                              uint8_t  * dst, int dst_w, int dst_h) {
-	int s, d;
-	for (s = 0, d = 0; d < dst_w * dst_h * 3; d++) {
-		dst[d] = src[s];
-		if (++s >= src_h * src_h) s = 0;
-	}
+                            uint8_t  * dst, int dst_w, int dst_h) {
+  
+  int xs, ys, xd, yd;
+  uint16_t r, g, b, data;
+	int max = dst_w * dst_h * 3;
+	unsigned char *pdst;
+	unsigned char *psrc;
 
+	for (ys = 0, yd = 0, psrc = src, pdst = dst; ys < dst_h; ys++, yd++) {
+		r = 0;
+		g = 0;
+		b = 0;
+		for (xs = 0, xd = 0; xd < dst_w; xs++, xd++) {
+			r = 0; b = 0; g = 0;
+			if (ys > 0 && ys < src_h-1 && xs > 0 && xs < src_w-1) {
+				if (ys&1) {	  
+					if (xs&1) {
+						b = *psrc;
+						g = (PRGGB10_L + PRGGB10_R + PRGGB10_U + PRGGB10_D)/4;
+						r = (PRGGB10_UL + PRGGB10_DL + PRGGB10_UR + PRGGB10_UL)/4;
+					}
+					else {
+						b = (PRGGB10_L + PRGGB10_R)/2;
+						g = *psrc;
+						r = (PRGGB10_U + PRGGB10_D)/2;
+					}
+				}
+				else {
+					if (xs&1) {
+						b = (PRGGB10_U + PRGGB10_D)/2;
+						g = *psrc;
+						r = (PRGGB10_L + PRGGB10_R)/2;
+					}
+					else {
+						g = (PRGGB10_L + PRGGB10_R + PRGGB10_U + PRGGB10_D)/4;
+						b = (PRGGB10_UL + PRGGB10_DL + PRGGB10_UR + PRGGB10_UL)/4;
+						r = *psrc;
+					}
+				}
+			}
+			if (pdst - dst > max) {
+				printf ("debayer error. dpst out of bounds size:%dx%d  pos:%dx%d  \n", dst_w, dst_h, xd, yd);
+			}
+			if ((ys == 10 || ys == 11) && xs < 10) printf ("%dx%d - %d, %d, %d\n", xs, ys, r, g, b);
+			pdst[0] = (r);
+			pdst[1] = (g);
+			pdst[2] = (b);
+			pdst += 3;
+			psrc += 2;
+		}
+	}
 };
 
 
 void debayer_rggb10_bilinear (uint8_t * src, int src_w, int src_h,
                              uint8_t * dst, int dst_w, int dst_h) {
-	int s, d;
-	for (s = 0, d = 0; d < dst_w * dst_h * 3; d++) {
-		dst[d] = src[s];
-		if (++s >= src_h * src_h) s = 0;
-	}
-
-
+    debayer_rggb10_simple(src, src_w, src_h, dst, dst_w, dst_h);
 };