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Diffstat (limited to 'demuxer/Demuxers/ByteParser.cpp')
-rw-r--r--demuxer/Demuxers/ByteParser.cpp93
1 files changed, 0 insertions, 93 deletions
diff --git a/demuxer/Demuxers/ByteParser.cpp b/demuxer/Demuxers/ByteParser.cpp
deleted file mode 100644
index 8597edd9..00000000
--- a/demuxer/Demuxers/ByteParser.cpp
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Copyright (C) 2011 Hendrik Leppkes
- * http://www.1f0.de
- *
- * This Program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This Program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; see the file COPYING. If not, write to
- * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
- * http://www.gnu.org/copyleft/gpl.html
- *
- * Initial design and concept by Gabest and the MPC-HC Team, copyright under GPLv2
- */
-
-#include "stdafx.h"
-#include "ByteParser.h"
-
-CByteParser::CByteParser(const BYTE *pData, uint32_t length)
- : m_pData(pData), m_pCurrent(pData), m_pEnd(pData+length), m_dwLen(length), m_bitBuffer(0), m_bitLen(0)
-{
-}
-
-CByteParser::~CByteParser()
-{
-}
-
-uint32_t CByteParser::BitRead(uint8_t numBits, bool peek)
-{
- ASSERT(numBits <= 32);
- ASSERT(numBits <= (m_bitLen + (8 * (m_pEnd - m_pCurrent))));
-
- if (numBits == 0) { return 0; }
-
- bool atEnd = false;
- // Read more data in the buffer
- while(m_bitLen < numBits) {
- m_bitBuffer <<= 8;
- m_bitBuffer += !atEnd ? *m_pCurrent : 0;
- // Just a safety check so we don't cross the array boundary
- if (m_pCurrent < m_pEnd) { m_pCurrent++; } else { atEnd = true; }
- m_bitLen += 8;
- }
-
- // Number of superfluous bits in the buffer
- int bitlen = m_bitLen - numBits;
-
- // Compose the return value
- // Shift the value so the superfluous bits fall off, and then crop the result with an AND
- uint32_t ret = (m_bitBuffer >> bitlen) & ((1ui64 << numBits) - 1);
-
- // If we're not peeking, then update the buffer and remove the data we just read
- if(!peek) {
- m_bitBuffer &= ((1ui64 << bitlen) - 1);
- m_bitLen = bitlen;
- }
-
- return ret;
-}
-
-// Exponential Golomb Coding (with k = 0)
-// As used in H.264/MPEG-4 AVC
-// http://en.wikipedia.org/wiki/Exponential-Golomb_coding
-
-uint64_t CByteParser::UExpGolombRead() {
- int n = -1;
- for(BYTE b = 0; !b; n++) {
- b = BitRead(1);
- }
- return (1ui64 << n) - 1 + BitRead(n);
-}
-
-int64_t CByteParser::SExpGolombRead() {
- uint64_t k = UExpGolombRead();
- // Negative numbers are interleaved in the series
- // k: 0, 1, 2, 3, 4, 5, 6, ...
- // Actual: 0, 1, -1, 2, -2, 3, -3, ....
- // So all even numbers are negative (last bit = 0)
- return ((k&1) ? 1 : -1) * ((k + 1) >> 1);
-}
-
-void CByteParser::Seek(DWORD pos)
-{
- m_pCurrent = m_pData + min(m_dwLen, pos);
- BitFlush();
-}