X-Git-Url: https://git.kernelconcepts.de/?p=metawatch.git;a=blobdiff_plain;f=mw_utility.c;h=2ddc12dde098f7e2dafe4f9b9bb2ac0f5ed2893f;hp=baf3d0a07d94eb30da3adfc5776403674e77a12e;hb=59068bbd135c3d2ed046be5fd64850166ca04a5c;hpb=fc1c62b9c0c3395297f2871028516a62d5effa19

diff --git a/mw_utility.c b/mw_utility.c
index baf3d0a..2ddc12d 100644
--- a/mw_utility.c
+++ b/mw_utility.c
@@ -64,8 +64,10 @@ void mw_free_pbuffer(mw_buffer *mwbuf)
 }
 
 /*
- * makes a buffer for sending to the watch from the drawing buffer, e.g.
+ * makes a buffer for sending to the LCD watch from the drawing buffer, e.g.
  * mw_send_bitmap(mw_fd, MW_SCREEN_MODE_IDLE, 96, 65, 31, bbuf, len);
+ *
+ * NOT reentrant !
  */
 unsigned char *mw_make_mw_buffer(mw_buffer *mwbuf, int *buflen)
 {
@@ -88,6 +90,27 @@ unsigned char *mw_make_mw_buffer(mw_buffer *mwbuf, int *buflen)
 	return wbuf;
 }
 
+unsigned char *mw_make_mw_oled_buffer(mw_buffer *mwbuf, int *buflen)
+{
+	static unsigned char wbuf[2*80]; /* size of one OLED, two rows */
+	int x, y;
+	unsigned char clr;
+
+	memset(wbuf, 0, 2*80);
+
+	for (x=0; x<mwbuf->res_x; x++) {
+		for (y=0; y<mwbuf->res_y; y++) {
+			clr = *(unsigned char *)(mwbuf->pbuf+((y*mwbuf->res_x)+x));
+			if (clr) {
+				*(unsigned char *)(wbuf+(x+80*(y/8))) |= 1 << (7-(y%8));
+			}
+		}
+	}
+	*buflen = (mwbuf->res_y / 8) * 80;
+
+	return wbuf;
+}
+
 void mw_dump_mw_buffer(mw_buffer *mwbuf)
 {
 	int x, y;