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Unified Diff: core/src/fxcodec/jbig2/JBig2_ArithIntDecoder.cpp

Issue 1800523005: Move core/src/ up to core/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Created 4 years, 9 months ago
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Index: core/src/fxcodec/jbig2/JBig2_ArithIntDecoder.cpp
diff --git a/core/src/fxcodec/jbig2/JBig2_ArithIntDecoder.cpp b/core/src/fxcodec/jbig2/JBig2_ArithIntDecoder.cpp
deleted file mode 100644
index 2fac8df5a95da2d32f001c3f1960533f6d1bf4a0..0000000000000000000000000000000000000000
--- a/core/src/fxcodec/jbig2/JBig2_ArithIntDecoder.cpp
+++ /dev/null
@@ -1,99 +0,0 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "core/src/fxcodec/jbig2/JBig2_ArithIntDecoder.h"
-
-#include <vector>
-
-#include "core/include/fxcrt/fx_basic.h"
-
-namespace {
-
-int ShiftOr(int val, int bitwise_or_val) {
- return (val << 1) | bitwise_or_val;
-}
-
-const struct ArithIntDecodeData {
- int nNeedBits;
- int nValue;
-} g_ArithIntDecodeData[] = {
- {2, 0},
- {4, 4},
- {6, 20},
- {8, 84},
- {12, 340},
- {32, 4436},
-};
-
-size_t RecursiveDecode(CJBig2_ArithDecoder* decoder,
- std::vector<JBig2ArithCtx>* context,
- int* prev,
- size_t depth) {
- static const size_t kDepthEnd = FX_ArraySize(g_ArithIntDecodeData) - 1;
- if (depth == kDepthEnd)
- return kDepthEnd;
-
- JBig2ArithCtx* pCX = &(*context)[*prev];
- int D = decoder->DECODE(pCX);
- *prev = ShiftOr(*prev, D);
- if (!D)
- return depth;
- return RecursiveDecode(decoder, context, prev, depth + 1);
-}
-
-} // namespace
-
-CJBig2_ArithIntDecoder::CJBig2_ArithIntDecoder() {
- m_IAx.resize(512);
-}
-
-CJBig2_ArithIntDecoder::~CJBig2_ArithIntDecoder() {
-}
-
-bool CJBig2_ArithIntDecoder::decode(CJBig2_ArithDecoder* pArithDecoder,
- int* nResult) {
- int PREV = 1;
- const int S = pArithDecoder->DECODE(&m_IAx[PREV]);
- PREV = ShiftOr(PREV, S);
-
- const size_t nDecodeDataIndex =
- RecursiveDecode(pArithDecoder, &m_IAx, &PREV, 0);
-
- int nTemp = 0;
- for (int i = 0; i < g_ArithIntDecodeData[nDecodeDataIndex].nNeedBits; ++i) {
- int D = pArithDecoder->DECODE(&m_IAx[PREV]);
- PREV = ShiftOr(PREV, D);
- if (PREV >= 256)
- PREV = (PREV & 511) | 256;
- nTemp = ShiftOr(nTemp, D);
- }
- int nValue = g_ArithIntDecodeData[nDecodeDataIndex].nValue;
- nValue += nTemp;
- if (S == 1 && nValue > 0)
- nValue = -nValue;
-
- *nResult = nValue;
- return S != 1 || nValue != 0;
-}
-
-CJBig2_ArithIaidDecoder::CJBig2_ArithIaidDecoder(unsigned char SBSYMCODELENA)
- : SBSYMCODELEN(SBSYMCODELENA) {
- m_IAID.resize(1 << SBSYMCODELEN);
-}
-
-CJBig2_ArithIaidDecoder::~CJBig2_ArithIaidDecoder() {
-}
-
-void CJBig2_ArithIaidDecoder::decode(CJBig2_ArithDecoder* pArithDecoder,
- FX_DWORD* nResult) {
- int PREV = 1;
- for (unsigned char i = 0; i < SBSYMCODELEN; ++i) {
- JBig2ArithCtx* pCX = &m_IAID[PREV];
- int D = pArithDecoder->DECODE(pCX);
- PREV = ShiftOr(PREV, D);
- }
- *nResult = PREV - (1 << SBSYMCODELEN);
-}
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