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Diffstat (limited to '')
| -rw-r--r-- | winpr/libwinpr/utils/collections/BitStream.c | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/winpr/libwinpr/utils/collections/BitStream.c b/winpr/libwinpr/utils/collections/BitStream.c new file mode 100644 index 0000000..e57af94 --- /dev/null +++ b/winpr/libwinpr/utils/collections/BitStream.c @@ -0,0 +1,176 @@ +/** + * WinPR: Windows Portable Runtime + * BitStream + * + * Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com> + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <winpr/assert.h> +#include <winpr/config.h> + +#include <winpr/print.h> +#include <winpr/bitstream.h> + +static const char* BYTE_BIT_STRINGS_LSB[256] = { + "00000000", "00000001", "00000010", "00000011", "00000100", "00000101", "00000110", "00000111", + "00001000", "00001001", "00001010", "00001011", "00001100", "00001101", "00001110", "00001111", + "00010000", "00010001", "00010010", "00010011", "00010100", "00010101", "00010110", "00010111", + "00011000", "00011001", "00011010", "00011011", "00011100", "00011101", "00011110", "00011111", + "00100000", "00100001", "00100010", "00100011", "00100100", "00100101", "00100110", "00100111", + "00101000", "00101001", "00101010", "00101011", "00101100", "00101101", "00101110", "00101111", + "00110000", "00110001", "00110010", "00110011", "00110100", "00110101", "00110110", "00110111", + "00111000", "00111001", "00111010", "00111011", "00111100", "00111101", "00111110", "00111111", + "01000000", "01000001", "01000010", "01000011", "01000100", "01000101", "01000110", "01000111", + "01001000", "01001001", "01001010", "01001011", "01001100", "01001101", "01001110", "01001111", + "01010000", "01010001", "01010010", "01010011", "01010100", "01010101", "01010110", "01010111", + "01011000", "01011001", "01011010", "01011011", "01011100", "01011101", "01011110", "01011111", + "01100000", "01100001", "01100010", "01100011", "01100100", "01100101", "01100110", "01100111", + "01101000", "01101001", "01101010", "01101011", "01101100", "01101101", "01101110", "01101111", + "01110000", "01110001", "01110010", "01110011", "01110100", "01110101", "01110110", "01110111", + "01111000", "01111001", "01111010", "01111011", "01111100", "01111101", "01111110", "01111111", + "10000000", "10000001", "10000010", "10000011", "10000100", "10000101", "10000110", "10000111", + "10001000", "10001001", "10001010", "10001011", "10001100", "10001101", "10001110", "10001111", + "10010000", "10010001", "10010010", "10010011", "10010100", "10010101", "10010110", "10010111", + "10011000", "10011001", "10011010", "10011011", "10011100", "10011101", "10011110", "10011111", + "10100000", "10100001", "10100010", "10100011", "10100100", "10100101", "10100110", "10100111", + "10101000", "10101001", "10101010", "10101011", "10101100", "10101101", "10101110", "10101111", + "10110000", "10110001", "10110010", "10110011", "10110100", "10110101", "10110110", "10110111", + "10111000", "10111001", "10111010", "10111011", "10111100", "10111101", "10111110", "10111111", + "11000000", "11000001", "11000010", "11000011", "11000100", "11000101", "11000110", "11000111", + "11001000", "11001001", "11001010", "11001011", "11001100", "11001101", "11001110", "11001111", + "11010000", "11010001", "11010010", "11010011", "11010100", "11010101", "11010110", "11010111", + "11011000", "11011001", "11011010", "11011011", "11011100", "11011101", "11011110", "11011111", + "11100000", "11100001", "11100010", "11100011", "11100100", "11100101", "11100110", "11100111", + "11101000", "11101001", "11101010", "11101011", "11101100", "11101101", "11101110", "11101111", + "11110000", "11110001", "11110010", "11110011", "11110100", "11110101", "11110110", "11110111", + "11111000", "11111001", "11111010", "11111011", "11111100", "11111101", "11111110", "11111111" +}; + +static const char* BYTE_BIT_STRINGS_MSB[256] = { + "00000000", "10000000", "01000000", "11000000", "00100000", "10100000", "01100000", "11100000", + "00010000", "10010000", "01010000", "11010000", "00110000", "10110000", "01110000", "11110000", + "00001000", "10001000", "01001000", "11001000", "00101000", "10101000", "01101000", "11101000", + "00011000", "10011000", "01011000", "11011000", "00111000", "10111000", "01111000", "11111000", + "00000100", "10000100", "01000100", "11000100", "00100100", "10100100", "01100100", "11100100", + "00010100", "10010100", "01010100", "11010100", "00110100", "10110100", "01110100", "11110100", + "00001100", "10001100", "01001100", "11001100", "00101100", "10101100", "01101100", "11101100", + "00011100", "10011100", "01011100", "11011100", "00111100", "10111100", "01111100", "11111100", + "00000010", "10000010", "01000010", "11000010", "00100010", "10100010", "01100010", "11100010", + "00010010", "10010010", "01010010", "11010010", "00110010", "10110010", "01110010", "11110010", + "00001010", "10001010", "01001010", "11001010", "00101010", "10101010", "01101010", "11101010", + "00011010", "10011010", "01011010", "11011010", "00111010", "10111010", "01111010", "11111010", + "00000110", "10000110", "01000110", "11000110", "00100110", "10100110", "01100110", "11100110", + "00010110", "10010110", "01010110", "11010110", "00110110", "10110110", "01110110", "11110110", + "00001110", "10001110", "01001110", "11001110", "00101110", "10101110", "01101110", "11101110", + "00011110", "10011110", "01011110", "11011110", "00111110", "10111110", "01111110", "11111110", + "00000001", "10000001", "01000001", "11000001", "00100001", "10100001", "01100001", "11100001", + "00010001", "10010001", "01010001", "11010001", "00110001", "10110001", "01110001", "11110001", + "00001001", "10001001", "01001001", "11001001", "00101001", "10101001", "01101001", "11101001", + "00011001", "10011001", "01011001", "11011001", "00111001", "10111001", "01111001", "11111001", + "00000101", "10000101", "01000101", "11000101", "00100101", "10100101", "01100101", "11100101", + "00010101", "10010101", "01010101", "11010101", "00110101", "10110101", "01110101", "11110101", + "00001101", "10001101", "01001101", "11001101", "00101101", "10101101", "01101101", "11101101", + "00011101", "10011101", "01011101", "11011101", "00111101", "10111101", "01111101", "11111101", + "00000011", "10000011", "01000011", "11000011", "00100011", "10100011", "01100011", "11100011", + "00010011", "10010011", "01010011", "11010011", "00110011", "10110011", "01110011", "11110011", + "00001011", "10001011", "01001011", "11001011", "00101011", "10101011", "01101011", "11101011", + "00011011", "10011011", "01011011", "11011011", "00111011", "10111011", "01111011", "11111011", + "00000111", "10000111", "01000111", "11000111", "00100111", "10100111", "01100111", "11100111", + "00010111", "10010111", "01010111", "11010111", "00110111", "10110111", "01110111", "11110111", + "00001111", "10001111", "01001111", "11001111", "00101111", "10101111", "01101111", "11101111", + "00011111", "10011111", "01011111", "11011111", "00111111", "10111111", "01111111", "11111111" +}; + +void BitDump(const char* tag, UINT32 level, const BYTE* buffer, UINT32 length, UINT32 flags) +{ + const char** strs = (flags & BITDUMP_MSB_FIRST) ? BYTE_BIT_STRINGS_MSB : BYTE_BIT_STRINGS_LSB; + char pbuffer[64 * 8 + 1] = { 0 }; + size_t pos = 0; + + WINPR_ASSERT(tag); + WINPR_ASSERT(buffer || (length == 0)); + + DWORD i = 0; + for (; i < length; i += 8) + { + const char* str = strs[buffer[i / 8]]; + const int nbits = (length - i) > 8 ? 8 : (length - i); + const int rc = _snprintf(&pbuffer[pos], length - pos, "%.*s ", nbits, str); + if (rc < 0) + return; + + pos += (size_t)rc; + if ((i % 64) == 0) + { + pos = 0; + WLog_LVL(tag, level, "%s", pbuffer); + } + } + + if (i) + WLog_LVL(tag, level, "%s ", pbuffer); +} + +UINT32 ReverseBits32(UINT32 bits, UINT32 nbits) +{ + UINT32 rbits = 0; + + do + { + rbits = (rbits | (bits & 1)) << 1; + bits >>= 1; + nbits--; + } while (nbits > 0); + + rbits >>= 1; + return rbits; +} + +void BitStream_Attach(wBitStream* bs, const BYTE* buffer, UINT32 capacity) +{ + union + { + const BYTE* cpv; + BYTE* pv; + } cnv; + + WINPR_ASSERT(bs); + WINPR_ASSERT(buffer); + + cnv.cpv = buffer; + + bs->position = 0; + bs->buffer = cnv.pv; + bs->offset = 0; + bs->accumulator = 0; + bs->pointer = cnv.pv; + bs->capacity = capacity; + bs->length = bs->capacity * 8; +} + +wBitStream* BitStream_New(void) +{ + wBitStream* bs = (wBitStream*)calloc(1, sizeof(wBitStream)); + + return bs; +} + +void BitStream_Free(wBitStream* bs) +{ + if (!bs) + return; + + free(bs); +} |