X-Git-Url: https://sfsrealm.hopto.org/projects/gitweb.cgi?a=blobdiff_plain;f=grpapi%2Fgrpapi.h;h=5bdbe94344e7a490b9b1f416a7836adfdbca74bb;hb=553c8149075edf3d6ec191b3cb93c6361ec66a1a;hp=501253d4478f3d16ad0ef0a42be79cac64b25f97;hpb=8531f378333f02b781a0dc8d28014b89729e100a;p=grpapi.git

diff --git a/grpapi/grpapi.h b/grpapi/grpapi.h
index 501253d..5bdbe94 100644
--- a/grpapi/grpapi.h
+++ b/grpapi/grpapi.h
@@ -62,6 +62,24 @@ HANDLE GRPAPI WINAPI LoadGrp(LPCSTR lpFileName);
 BOOL   GRPAPI WINAPI DestroyGrp(HANDLE hGrp);
 BOOL   GRPAPI WINAPI DrawGrp(HANDLE hGrp, HDC hdcDest, int nXDest, int nYDest, WORD nFrame, DWORD *dwPalette, DWORD dwFlags, DWORD dwAlpha);
 BOOL   GRPAPI WINAPI GetGrpInfo(HANDLE hGrp, GRPHEADER *GrpInfo);
+BOOL   GRPAPI WINAPI GetGrpFrameInfo(HANDLE hGrp, WORD nFrame, DWORD *nLeft, DWORD *nTop, DWORD *nWidth, DWORD *nHeight);
+
+// A pointer to the raw image data to encode should be passed to lpImageData.  The size of
+// the buffer containing the data should be nFrames * wMaxWidth * wMaxHeight * sizeof(short)
+// and the values should be arranged row by row of the frame, with the top row first.
+// After all the rows of a frame have been put into the buffer, the rows of the next frame
+// go after it.  For transparent pixels, they should be set to -1.  All other pixels should
+// have the high order byte set to zero, meaning that they should not be negative and the
+// values should not exceed 255 (0xFF).  The values used for the colors are indexes into the
+// color palette.
+// Pass TRUE to bNoCompress if you need an uncompressed GRP.
+// Pass a pointer to a DWORD value to nGrpSize to receive the size in bytes of the resulting encoded GRP.
+// The return value of this function is actually a pointer to the GRP data.  This is what your
+// program should save to a file.  The size of this buffer is the value received by nGrpSize.
+// When your program is done with the returned buffer, it should call DestroyGrp on the
+// buffer that was returned by this function to free up the memory from it.
+// The pointer returned by this function can also be directly used by DrawGrp or GetGrpInfo.
+HANDLE GRPAPI WINAPI CreateGrp(signed short *lpImageData, WORD nFrames, WORD wMaxWidth, WORD wMaxHeight, BOOL bNoCompress, DWORD *nGrpSize);
 
 typedef COLORREF (WINAPI* GETPIXELPROC)(
   HDC hDC, // same value as hdcDest from DrawGrp,
@@ -81,7 +99,7 @@ typedef void (WINAPI* SETPIXELPROC)(
 
 // Call these to have DrawGrp use custom functions for reading and drawing pixels
 // so that you can have it read from and write to a buffer, for example.
-void GRPAPI WINAPI SetFunctionGetPixel(GETPIXELPROC lpGetPixelProc);
+void GRPAPI WINAPI SetFunctionGetPixel(GETPIXELPROC lpGetPixelProc); // Only used with ALPHA_BLEND
 void GRPAPI WINAPI SetFunctionSetPixel(SETPIXELPROC lpSetPixelProc);
 
 // Call this to make a different Storm.dll-compatible MPQ library be used (like SFMPQ).
@@ -96,4 +114,3 @@ void   GRPAPI WINAPI FreeGrpApi();
 #endif
 
 #endif
-