From 9a280d396532c9ac38cfd8589012dd47e659d002 Mon Sep 17 00:00:00 2001
From: Colin Snover
Date: Thu, 3 Mar 2016 20:31:10 -0600
Subject: SCI32: Add all kBitmap signatures

Not all SCI2.1late/SCI3 function signatures are fully known yet,
but all subops are now represented in the kernel tables.
---
 engines/sci/graphics/celobj32.cpp | 45 ++++++++++++++++++++++++++++++++++++---
 1 file changed, 42 insertions(+), 3 deletions(-)

(limited to 'engines/sci/graphics/celobj32.cpp')

diff --git a/engines/sci/graphics/celobj32.cpp b/engines/sci/graphics/celobj32.cpp
index 62db02b554..787d295d5e 100644
--- a/engines/sci/graphics/celobj32.cpp
+++ b/engines/sci/graphics/celobj32.cpp
@@ -968,6 +968,40 @@ byte *CelObjPic::getResPointer() const {
 
 #pragma mark -
 #pragma mark CelObjMem
+void CelObjMem::buildBitmapHeader(byte *bitmap, const int16 width, const int16 height, const uint8 skipColor, const int16 displaceX, const int16 displaceY, const int16 scaledWidth, const int16 scaledHeight, const uint32 hunkPaletteOffset, const bool useRemap) {
+	const uint16 bitmapHeaderSize = getBitmapHeaderSize();
+
+	WRITE_SCI11ENDIAN_UINT16(bitmap + 0, width);
+	WRITE_SCI11ENDIAN_UINT16(bitmap + 2, height);
+	WRITE_SCI11ENDIAN_UINT16(bitmap + 4, (uint16)displaceX);
+	WRITE_SCI11ENDIAN_UINT16(bitmap + 6, (uint16)displaceY);
+	bitmap[8] = skipColor;
+	bitmap[9] = 0;
+	WRITE_SCI11ENDIAN_UINT16(bitmap + 10, 0);
+
+	if (useRemap) {
+		bitmap[10] |= 2;
+	}
+
+	WRITE_SCI11ENDIAN_UINT32(bitmap + 12, width * height);
+	WRITE_SCI11ENDIAN_UINT32(bitmap + 16, 0);
+
+	if (hunkPaletteOffset) {
+		WRITE_SCI11ENDIAN_UINT32(bitmap + 20, hunkPaletteOffset + bitmapHeaderSize);
+	} else {
+		WRITE_SCI11ENDIAN_UINT32(bitmap + 20, 0);
+	}
+
+	WRITE_SCI11ENDIAN_UINT32(bitmap + 24, bitmapHeaderSize);
+	WRITE_SCI11ENDIAN_UINT32(bitmap + 28, bitmapHeaderSize);
+	WRITE_SCI11ENDIAN_UINT32(bitmap + 32, 0);
+
+	if (bitmapHeaderSize >= 40) {
+		WRITE_SCI11ENDIAN_UINT16(bitmap + 36, scaledWidth);
+		WRITE_SCI11ENDIAN_UINT16(bitmap + 38, scaledHeight);
+	}
+}
+
 CelObjMem::CelObjMem(const reg_t bitmap) {
 	_info.type = kCelTypeMem;
 	_info.bitmap = bitmap;
@@ -976,8 +1010,9 @@ CelObjMem::CelObjMem(const reg_t bitmap) {
 	_celHeaderOffset = 0;
 	_transparent = true;
 
+	const uint32 bitmapHeaderSize = getBitmapHeaderSize();
 	byte *bitmapData = g_sci->getEngineState()->_segMan->getHunkPointer(bitmap);
-	if (bitmapData == nullptr || READ_SCI11ENDIAN_UINT32(bitmapData + 28) != 46) {
+	if (bitmapData == nullptr || READ_SCI11ENDIAN_UINT32(bitmapData + 28) != bitmapHeaderSize) {
 		error("Invalid Text bitmap %04x:%04x", PRINT_REG(bitmap));
 	}
 
@@ -986,8 +1021,12 @@ CelObjMem::CelObjMem(const reg_t bitmap) {
 	_displace.x = READ_SCI11ENDIAN_UINT16(bitmapData + 4);
 	_displace.y = READ_SCI11ENDIAN_UINT16(bitmapData + 6);
 	_transparentColor = bitmapData[8];
-	_scaledWidth = READ_SCI11ENDIAN_UINT16(bitmapData + 36);
-	_scaledHeight = READ_SCI11ENDIAN_UINT16(bitmapData + 38);
+	if (bitmapHeaderSize >= 40) {
+		_scaledWidth = READ_SCI11ENDIAN_UINT16(bitmapData + 36);
+		_scaledHeight = READ_SCI11ENDIAN_UINT16(bitmapData + 38);
+	} else {
+		error("TODO: SCI2 bitmaps not implemented yet!");
+	}
 	_hunkPaletteOffset = READ_SCI11ENDIAN_UINT16(bitmapData + 20);
 	_remap = (READ_SCI11ENDIAN_UINT16(bitmapData + 10) & 2) ? true : false;
 }
-- 
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