X-Git-Url: https://sfsrealm.hopto.org/projects/?a=blobdiff_plain;f=grpapi%2Fgrpapi.cpp;h=6c96c561290fac94dfba899aa2deb14a2561daef;hb=b54e4e4936096a8e3b1b25b435ac9aaac7c3660d;hp=7cc25b00af60bda9bbfeba4d14403f030706c5ea;hpb=03269fee39ef66bca887d4be10b93ab6995a12a4;p=grpapi.git

diff --git a/grpapi/grpapi.cpp b/grpapi/grpapi.cpp
index 7cc25b0..6c96c56 100644
--- a/grpapi/grpapi.cpp
+++ b/grpapi/grpapi.cpp
@@ -79,6 +79,23 @@ void GRPAPI WINAPI FreeGrpApi()
 {
 }
 
+/*
+HANDLE hProcessHeap = NULL;
+
+void * SFAlloc(size_t nSize)
+{
+	if (!hProcessHeap) hProcessHeap = GetProcessHeap();
+	if (hProcessHeap) return HeapAlloc(hProcessHeap, 0, nSize);
+	else return NULL;
+}
+
+void SFFree(void *lpMem)
+{
+	if (!hProcessHeap) hProcessHeap = GetProcessHeap();
+	if (hProcessHeap) HeapFree(hProcessHeap, 0, lpMem);
+}
+*/
+
 BOOL GRPAPI WINAPI SetMpqDll(LPCSTR lpDllFileName)
 {
 	if (LoadStorm((char *)lpDllFileName)) return TRUE;
@@ -455,6 +472,7 @@ HANDLE GRPAPI WINAPI CreateGrp(signed short *lpImageData, WORD nFrames, WORD wMa
 	GrpHeader.wMaxHeight = wMaxHeight;
 	lpFrameHeaders = (FRAMEHEADER *)malloc(nFrames * sizeof(FRAMEHEADER));
 	lpFrameData = (FRAMEDATA *)malloc(nFrames * sizeof(FRAMEDATA));
+	nLastOffset = sizeof(GRPHEADER) + nFrames * sizeof(FRAMEHEADER);
 
 	for (i = 0; i < nFrames; i++) {
 		// Search for duplicate frames
@@ -491,10 +509,16 @@ HANDLE GRPAPI WINAPI CreateGrp(signed short *lpImageData, WORD nFrames, WORD wMa
 				}
 			}
 		}
+		x2 = x2 - x1 + 1;
+		y2 = y2 - y1 + 1;
+		if ((WORD)x1 > 255) x1 = 255;
+		if ((WORD)y1 > 255) y1 = 255;
+		if ((WORD)x2 > 255) x2 = 255;
+		if ((WORD)y2 > 255) y2 = 255;
 		lpFrameHeaders[i].Left = x1;
 		lpFrameHeaders[i].Top = y1;
-		lpFrameHeaders[i].Width = x2 - x1 + 1;
-		lpFrameHeaders[i].Height = y2 - y1 + 1;
+		lpFrameHeaders[i].Width = x2;
+		lpFrameHeaders[i].Height = y2;
 
 		if (!bNoCompress) {
 			EncodeFrameData(lpImageData, i, &GrpHeader, &lpFrameHeaders[i], &lpFrameData[i]);
@@ -539,7 +563,7 @@ HANDLE GRPAPI WINAPI CreateGrp(signed short *lpImageData, WORD nFrames, WORD wMa
 				for (y = 0; y < lpFrameHeaders[i].Height; y++) {
 					for (x = 0; x < lpFrameHeaders[i].Width; x++) {
 						lpGrpData[lpFrameHeaders[i].Offset + y * lpFrameHeaders[i].Width + x] =
-							lpImageData[i * wMaxWidth * wMaxHeight + (lpFrameHeaders[i].Top + y) * wMaxWidth + lpFrameHeaders[i].Left + x];
+							(BYTE)lpImageData[i * wMaxWidth * wMaxHeight + (lpFrameHeaders[i].Top + y) * wMaxWidth + lpFrameHeaders[i].Left + x];
 					}
 				}
 			}
@@ -555,7 +579,7 @@ HANDLE GRPAPI WINAPI CreateGrp(signed short *lpImageData, WORD nFrames, WORD wMa
 
 void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHeader, FRAMEHEADER *lpFrameHeader, FRAMEDATA *lpFrameData)
 {
-	int x, y, i, j, nBufPos, nRepeat;
+	int x, y, i, nBufPos, nRepeat;
 	LPBYTE lpRowBuf;
 	WORD nLastOffset;
 
@@ -563,6 +587,7 @@ void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHea
 	lpFrameData->lpRowSizes = (WORD *)malloc(lpFrameHeader->Height * sizeof(WORD));
 	lpFrameData->lpRowData = (LPBYTE *)malloc(lpFrameHeader->Height * sizeof(LPBYTE));
 	lpRowBuf = (LPBYTE)malloc(lpFrameHeader->Width * 2);
+	nLastOffset = lpFrameHeader->Height * sizeof(WORD);
 
 	for (y = 0; y < lpFrameHeader->Height; y++) {
 		i = nFrame * lpGrpHeader->wMaxWidth * lpGrpHeader->wMaxHeight + (lpFrameHeader->Top + y) * lpGrpHeader->wMaxWidth;
@@ -602,7 +627,8 @@ void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHea
 							lpRowBuf[nBufPos]++;
 						}
 						x--;
-						nBufPos++;
+						if (nLastOffset + nBufPos + 1 <= 0xFFFF)
+							nBufPos++;
 						continue;
 					}
 
@@ -613,7 +639,8 @@ void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHea
 						lpRowBuf[nBufPos] = 0x41 + nRepeat;
 						lpRowBuf[nBufPos+1] = (BYTE)lpImageData[i+x];
 						x += nRepeat;
-						nBufPos += 2;
+						if (nLastOffset + nBufPos + 2 <= 0xFFFF)
+							nBufPos += 2;
 					}
 					else {
 						lpRowBuf[nBufPos] = 0;
@@ -630,18 +657,21 @@ void EncodeFrameData(signed short *lpImageData, WORD nFrame, GRPHEADER *lpGrpHea
 							lpRowBuf[nBufPos+lpRowBuf[nBufPos]] = (BYTE)lpImageData[i+x];
 						}
 						x--;
-						nBufPos += 1 + lpRowBuf[nBufPos];
+						if (nLastOffset + nBufPos + 1 + lpRowBuf[nBufPos] <= 0xFFFF)
+							nBufPos += 1 + lpRowBuf[nBufPos];
 					}
 				}
 				else {
 					if (lpImageData[i+x] < 0) {
 						lpRowBuf[nBufPos] = 0x81;
-						nBufPos++;
+						if (nLastOffset + nBufPos + 1 <= 0xFFFF)
+							nBufPos++;
 					}
 					else {
 						lpRowBuf[nBufPos] = 1;
 						lpRowBuf[nBufPos+1] = (BYTE)lpImageData[i+x];
-						nBufPos += 2;
+						if (nLastOffset + nBufPos + 2 <= 0xFFFF)
+							nBufPos += 2;
 					}
 				}
 			}