summaryrefslogtreecommitdiff
path: root/core/fxcrt/fx_basic_util.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'core/fxcrt/fx_basic_util.cpp')
-rw-r--r--core/fxcrt/fx_basic_util.cpp40
1 files changed, 0 insertions, 40 deletions
diff --git a/core/fxcrt/fx_basic_util.cpp b/core/fxcrt/fx_basic_util.cpp
deleted file mode 100644
index 704fd18418..0000000000
--- a/core/fxcrt/fx_basic_util.cpp
+++ /dev/null
@@ -1,40 +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 <algorithm>
-
-#include "core/fxcrt/fx_system.h"
-
-uint32_t GetBits32(const uint8_t* pData, int bitpos, int nbits) {
- ASSERT(0 < nbits && nbits <= 32);
- const uint8_t* dataPtr = &pData[bitpos / 8];
- int bitShift;
- int bitMask;
- int dstShift;
- int bitCount = bitpos & 0x07;
- if (nbits < 8 && nbits + bitCount <= 8) {
- bitShift = 8 - nbits - bitCount;
- bitMask = (1 << nbits) - 1;
- dstShift = 0;
- } else {
- bitShift = 0;
- int bitOffset = 8 - bitCount;
- bitMask = (1 << std::min(bitOffset, nbits)) - 1;
- dstShift = nbits - bitOffset;
- }
- uint32_t result =
- static_cast<uint32_t>((*dataPtr++ >> bitShift & bitMask) << dstShift);
- while (dstShift >= 8) {
- dstShift -= 8;
- result |= *dataPtr++ << dstShift;
- }
- if (dstShift > 0) {
- bitShift = 8 - dstShift;
- bitMask = (1 << dstShift) - 1;
- result |= *dataPtr++ >> bitShift & bitMask;
- }
- return result;
-}