tbitpack.cpp
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上传日期:2007-06-06
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文件大小:7k
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: RCSL 1.0/RPSL 1.0
- *
- * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved.
- *
- * The contents of this file, and the files included with this file, are
- * subject to the current version of the RealNetworks Public Source License
- * Version 1.0 (the "RPSL") available at
- * http://www.helixcommunity.org/content/rpsl unless you have licensed
- * the file under the RealNetworks Community Source License Version 1.0
- * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl,
- * in which case the RCSL will apply. You may also obtain the license terms
- * directly from RealNetworks. You may not use this file except in
- * compliance with the RPSL or, if you have a valid RCSL with RealNetworks
- * applicable to this file, the RCSL. Please see the applicable RPSL or
- * RCSL for the rights, obligations and limitations governing use of the
- * contents of the file.
- *
- * This file is part of the Helix DNA Technology. RealNetworks is the
- * developer of the Original Code and owns the copyrights in the portions
- * it created.
- *
- * This file, and the files included with this file, is distributed and made
- * available on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
- * EXPRESS OR IMPLIED, AND REALNETWORKS HEREBY DISCLAIMS ALL SUCH WARRANTIES,
- * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS
- * FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
- *
- * Technology Compatibility Kit Test Suite(s) Location:
- * http://www.helixcommunity.org/content/tck
- *
- * Contributor(s):
- *
- * ***** END LICENSE BLOCK ***** */
- #include <stdio.h>
- #include <stdlib.h>
- #include "hxassert.h"
- #include "bitstream.h"
- #include "bitpack.h"
- #define VALUE_CT 100001
- #define BUFFER_SIZE VALUE_CT * 32 / 8
- #define VALUE_CT2 1001
- #define PACK_BUF_SIZE 100
- #define BUFFER_SIZE2 VALUE_CT2 * PACK_BUF_SIZE
- char ToHex(int i)
- {
- static char z_hex[] = "0123456789ABCDEF";
- return z_hex[i];
- }
- void ShowBuffer(unsigned char* pData, int size)
- {
- int lines = size >> 4;
- char buf[16 * 3 + 1];
- int i = 0;
-
- printf ("ShowBuffer(%p, %d)n", pData, size);
- while (i < size)
- {
- char* pTmp = buf;
- int j = 0;
- while (j < 16)
- {
- if (i >= size)
- break;
- *pTmp++ = ToHex((*pData >> 4) & 0xf);
- *pTmp++ = ToHex((*pData++) & 0xf);
- *pTmp++ = ' ';
- i++;
- j++;
- }
- *pTmp = ' ';
-
-
- printf ("%sn", buf);
-
- }
- }
- int GetValue(int i, int size)
- {
- int ret = i;
- ret = rand();
- ret &= ((1 << size) - 1);
- return ret;
- }
- int GetBitCount(int maxSize)
- {
- int mask = 1;
-
- while (mask < 2 * maxSize)
- mask = (mask << 1) | 0x1;
- //int ret = MIN(24, maxSize);
- int ret = (maxSize * (rand() & mask) ) / mask;
- HX_ASSERT(ret <= maxSize);
- return ret;
- }
- void GenBuffer(UINT8* pBuf, int size)
- {
- for (int i = 0; i < size; i++)
- pBuf[i] = (UINT8)(rand() & 0xff);
- }
- int GetOffset()
- {
- return rand() & 0x7;
- }
- bool RunTest(int run)
- {
- // This tests basic bit operations
- bool failed = false;
- printf ("RunTest(%d)n", run);
- UINT8 buf[BUFFER_SIZE];
- BitPacker pack(buf, BUFFER_SIZE);
- srand(42 * run);
- for (int i = 0; i < VALUE_CT; i++)
- {
- int bitCount = GetBitCount(31);
- int value = GetValue(i, bitCount);
- pack.PackBits(value, bitCount);
- }
-
- srand(42 * run);
- Bitstream unpack;
- unpack.SetBuffer(buf);
- for (int j = 0; !failed && (j < VALUE_CT); j++)
- {
- int bitCount = GetBitCount(31);
- int expected = GetValue(j, bitCount);
- int peekVal = unpack.PeekBits(bitCount);
- int getVal = unpack.GetBits(bitCount);
- if (expected != peekVal)
- {
- printf ("%d expect %08x peekVal %08xn",
- j, expected, peekVal);
- failed = true;
- }
- else if (peekVal != getVal)
- {
- printf ("%d peekVal %08x getVal %08xn",
- j, peekVal, getVal);
- failed = true;
- }
- }
- return !failed;
- }
- bool RunTest2(int run)
- {
- printf ("RunTest2(%d)n", run);
- bool failed = false;
- // This tests the buffer GetBits() operation
- const int MaxBufferSize = 100;
- const int MaxBufferBits = 8 * MaxBufferSize;
- const int MaxByteCount = MaxBufferSize / 2;
- const int MaxBitCount = MaxByteCount * 8;
- UINT8 buf[MaxBufferSize];
- GenBuffer(buf, MaxBufferSize);
- UINT8 tmpBuffer[MaxBufferSize];
- Bitstream baseStream;
- Bitstream expectStream;
- baseStream.SetBuffer(buf);
- expectStream.SetBuffer(buf);
-
- int bitCount = 0;
- for (int bitsLeft = MaxBufferBits; !failed && bitsLeft; bitsLeft -= bitCount)
- {
- int maxBits = (bitsLeft > MaxBitCount) ? MaxBitCount : bitsLeft;
- bitCount = GetBitCount(maxBits);
-
- baseStream.GetBits(bitCount, tmpBuffer);
- int tmpBitCount = bitCount;
- for (int i = 0; !failed && tmpBitCount; i++)
- {
- int a = (tmpBitCount > 8) ? 8 : tmpBitCount;
- ULONG32 expect = expectStream.GetBits(a);
- ULONG32 result = tmpBuffer[i];
- if (a < 8)
- expect <<= (8 - a);
- if (expect != result)
- {
- printf ("byte %d expect %02x got %02xn",
- i, expect, result);
- failed = true;
- }
-
- tmpBitCount -= a;
- }
- }
- return !failed;
- }
- bool CompareBuffers(const UINT8* pBuf, const UINT8* pExpect, ULONG32 bitCount)
- {
- bool failed = false;
- for (int i = 0; !failed && bitCount; i++)
- {
- int a = (bitCount > 8) ? 8 : bitCount;
- ULONG32 expect = pExpect[i];
- ULONG32 result = pBuf[i];
-
- if (a < 8)
- {
- ULONG32 mask = ~((1 << (8 - a)) - 1);
- expect &= mask;
- result &= mask;
- }
-
- if (expect != result)
- {
- printf ("byte %d expect %02x got %02xn",
- i, expect, result);
- failed = true;
- }
-
- bitCount -= a;
- }
- return !failed;
- }
- bool RunTest3(int run)
- {
- bool failed = false;
- printf ("RunTest3(%d)n", run);
-
- const int MaxBufSize = 100;
- const int MaxBitCount = MaxBufSize * 8;
- UINT8 src[MaxBufSize];
- UINT8 dst[MaxBufSize];
- UINT8 expectBuf[MaxBufSize];
- srand(42 * run);
- for (int i = 0; !failed && (i < 1000); i++)
- {
- BitPacker pack(dst, MaxBufSize);
-
- GenBuffer(src, MaxBufSize);
-
- ULONG32 offset = 1; //GetOffset();
- int bitCount = GetBitCount(MaxBitCount - offset);
-
- pack.PackBits(0xbeef, offset);
- pack.PackBits(src, bitCount, 0);
-
- Bitstream expectStream;
- expectStream.SetBuffer(dst);
-
- expectStream.GetBits(offset);
- expectStream.GetBits(bitCount, expectBuf);
-
- failed = !CompareBuffers(src, expectBuf, bitCount);
- }
- return !failed;
- }
- int main (int argc, char* argv[])
- {
- int ret = 0;
- for (int i = 1; i < 24; i++)
- {
- if (!RunTest(i) ||
- !RunTest2(i) ||
- !RunTest3(i))
- {
- ret = -1;
- break;
- }
- }
- if (ret == 0)
- printf("Unit Test PASSEDn");
- else
- printf("Unit Test FAILEDn");
- return ret;
- }