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Diffstat (limited to 'SrcShared/Palm/Platform/Incs/Core/System/NetBitUtils.h')
| -rw-r--r-- | SrcShared/Palm/Platform/Incs/Core/System/NetBitUtils.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/SrcShared/Palm/Platform/Incs/Core/System/NetBitUtils.h b/SrcShared/Palm/Platform/Incs/Core/System/NetBitUtils.h new file mode 100644 index 0000000..9eb9f15 --- /dev/null +++ b/SrcShared/Palm/Platform/Incs/Core/System/NetBitUtils.h @@ -0,0 +1,135 @@ +/****************************************************************************** + * + * Copyright (c) 1997-1999 Palm Computing, Inc. or its subsidiaries. + * All rights reserved. + * + * File: NetBitUtils.h + * + * Description: + * Header file for bit manipulation routines used primarily + * by wireless network protocols. + * + * These routines live in the NetLib but are broken out here into + * a separate header so that they can be more easily used by source + * files that don't need access to the other NetLib functions. + * + * History: + * 6/11/97 Created by Ron Marianetti + * Name Date Description + * ---- ---- ----------- + * vmk 8/25/98 Defined bitVarIntMaxBits and bitVarIntMaxBytes + * + *****************************************************************************/ + +#ifndef __NETBITUTILS_H__ +#define __NETBITUTILS_H__ + +#include <PalmTypes.h> +#include <CoreTraps.h> + +#include <NetMgr.h> + +// # of bits in a byte +#define bitsInByte 8 + + +// Maximum size of variable-size ints in # of bits and bytes. This is based on +// the largest variable size int, which is encoded as follows: 1111 Bit[32] +#define bitVarIntMaxBits 36 +#define bitVarIntMaxBytes ((bitVarIntMaxBits + bitsInByte - 1) / bitsInByte) + + +//===================================================== +// BitXXX Macros +// +// The following macros are handy because they don't require that +// the source code pass in the NetLib library refnum to every +// call. +// +// When building server code or other emulation code where th +// library trap dispatcher is not used, the libRefNUm is unused +// and can be 0. +// +// When building for the viewer, the libRefNum must be the refNum +// of the NetLib. For applications, this libRefNum must be put +// into an application global named 'AppNetRefnum'. +// +//==================================================== +#if USE_TRAPS == 0 + #define netPrvRefnum 0 +#else + #define netPrvRefnum AppNetRefnum +#endif + + +#define BitMove( dstP, dstBitOffsetP, srcP, srcBitOffsetP, numBits) \ + NetLibBitMove(netPrvRefnum, dstP, dstBitOffsetP, srcP, srcBitOffsetP, numBits) + +#define BitPutFixed( dstP, dstBitOffsetP, value, numBits) \ + NetLibBitPutFixed(netPrvRefnum, dstP, dstBitOffsetP, value, numBits) + +#define BitGetFixed(srcP, srcBitOffsetP, numBits) \ + NetLibBitGetFixed(netPrvRefnum, srcP, srcBitOffsetP, numBits) + +#define BitPutUIntV(dstP, dstBitOffsetP, value) \ + NetLibBitPutUIntV(netPrvRefnum, dstP, dstBitOffsetP, value) + +#define BitGetUIntV(srcP, srcBitOffsetP) \ + NetLibBitGetUIntV(netPrvRefnum, srcP, srcBitOffsetP) + +#define BitPutIntV(dstP, dstBitOffsetP, value) \ + NetLibBitPutIntV(netPrvRefnum, dstP, dstBitOffsetP, value) + +#define BitGetIntV(srcP, srcBitOffsetP) \ + NetLibBitGetIntV(netPrvRefnum, srcP, srcBitOffsetP) + + + + +//===================================================== +// Functions +//==================================================== +#ifdef REMOVE_FOR_EMULATOR +#ifdef __cplusplus +extern "C" { +#endif + +//-------------------------------------------------- +// Bit Moving functions. For "slim" bit packing protocols +// used over wireless. +//-------------------------------------------------- +void NetLibBitMove(UInt16 libRefNum, UInt8 *dstP, UInt32 *dstBitOffsetP, + UInt8 *srcP, UInt32 *srcBitOffsetP, + UInt32 numBits) + SYS_TRAP(netLibTrapBitMove); + + +void NetLibBitPutFixed(UInt16 libRefNum, UInt8 *dstP, UInt32 *dstBitOffsetP, + UInt32 value, UInt16 numBits) + SYS_TRAP(netLibTrapBitPutFixed); + +UInt32 NetLibBitGetFixed(UInt16 libRefNum, UInt8 *dstP, UInt32 *dstBitOffsetP, + UInt16 numBits) + SYS_TRAP(netLibTrapBitGetFixed); + +void NetLibBitPutUIntV(UInt16 libRefNum, UInt8 *dstP, UInt32 *dstBitOffsetP, + UInt32 value) + SYS_TRAP(netLibTrapBitPutUIntV); + +UInt32 NetLibBitGetUIntV(UInt16 libRefNum, UInt8 *dstP, UInt32 *dstBitOffsetP) + SYS_TRAP(netLibTrapBitGetUIntV); + +void NetLibBitPutIntV(UInt16 libRefNum, UInt8 *dstP, UInt32 *dstBitOffsetP, + Int32 value) + SYS_TRAP(netLibTrapBitPutUIntV); + +Int32 NetLibBitGetIntV(UInt16 libRefNum, UInt8 *dstP, UInt32 *dstBitOffsetP) + SYS_TRAP(netLibTrapBitGetUIntV); + +#ifdef __cplusplus +} +#endif +#endif + + +#endif // __NETBITUTILS_H__ |