From bbd13e5d91c04383cf63d3cd70517e6b4bae8e3b Mon Sep 17 00:00:00 2001
From: Chris Apers
Date: Tue, 25 May 2004 13:44:22 +0000
Subject: New ARM functions (sound, copyrect, wide display)

svn-id: r13871
---
 backends/PalmOS/Src/arm/wide_pt.cpp | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 backends/PalmOS/Src/arm/wide_pt.cpp

(limited to 'backends/PalmOS/Src/arm/wide_pt.cpp')

diff --git a/backends/PalmOS/Src/arm/wide_pt.cpp b/backends/PalmOS/Src/arm/wide_pt.cpp
new file mode 100644
index 0000000000..007bfa3481
--- /dev/null
+++ b/backends/PalmOS/Src/arm/wide_pt.cpp
@@ -0,0 +1,37 @@
+#include "ArmNative.h"
+#include "endianutils.h"
+#include "../shared.h"
+
+void O_WidePortrait(void *userData68KP) {
+	OSysWidePtr dataP = (OSysWideType *)userData68KP;
+
+	Coord x, y;
+	UInt8 *dst	= (UInt8 *)ReadUnaligned32(&(dataP->dst));
+	UInt8 *src1	= (UInt8 *)ReadUnaligned32(&(dataP->src));
+	UInt8 *src2	= src1;
+
+	for (x = 0; x < WIDE_HALF_WIDTH; x++) {
+		for (y = 0; y < WIDE_HALF_HEIGHT; y++) {
+			*dst++ = *src1;
+			src1 += WIDE_PITCH;
+			*dst++ = *src1;
+			*dst++ = *src1;
+			src1 += WIDE_PITCH;
+		}
+		src1 = --src2;
+		dst += 20; // we draw 200pix scaled to 1.5 = 300, screen width=320, so next is 20
+
+		for (y = 0; y < WIDE_HALF_HEIGHT; y++) {
+			*dst++ = *src1;
+			src1 += WIDE_PITCH;
+			*dst++ = *src1;
+			*dst++ = *src1;
+			src1 += WIDE_PITCH;
+		}
+		src1 = --src2;
+		dst += 20;
+
+		MemMove(dst, dst - WIDE_PITCH, 300);	// 300 = 200 x 1.5
+		dst += WIDE_PITCH;
+	}	
+}
\ No newline at end of file
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