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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include <set> | 7 #include <set> |
8 #include <utility> | 8 #include <utility> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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4675 FX_DWORD dwSharedObjBits = hStream->GetBits(16); | 4675 FX_DWORD dwSharedObjBits = hStream->GetBits(16); |
4676 // Item 11: The number of bits needed to represent the numerically | 4676 // Item 11: The number of bits needed to represent the numerically |
4677 // greatest shared object identifier used by the pages. | 4677 // greatest shared object identifier used by the pages. |
4678 FX_DWORD dwSharedIdBits = hStream->GetBits(16); | 4678 FX_DWORD dwSharedIdBits = hStream->GetBits(16); |
4679 // Item 12: The number of bits needed to represent the numerator of | 4679 // Item 12: The number of bits needed to represent the numerator of |
4680 // the fractional position for each shared object reference. For each | 4680 // the fractional position for each shared object reference. For each |
4681 // shared object referenced from a page, there is an indication of | 4681 // shared object referenced from a page, there is an indication of |
4682 // where in the page's content stream the object is first referenced. | 4682 // where in the page's content stream the object is first referenced. |
4683 FX_DWORD dwSharedNumeratorBits = hStream->GetBits(16); | 4683 FX_DWORD dwSharedNumeratorBits = hStream->GetBits(16); |
4684 // Item 13: Skip Item 13 which has 16 bits. | 4684 // Item 13: Skip Item 13 which has 16 bits. |
4685 FX_DWORD dwSharedDenominator = hStream->GetBits(16); | 4685 hStream->SkipBits(16); |
4686 CPDF_Object* pPageNum = m_pLinearizedDict->GetElementValue(FX_BSTRC("N")); | 4686 CPDF_Object* pPageNum = m_pLinearizedDict->GetElementValue(FX_BSTRC("N")); |
4687 int nPages = pPageNum ? pPageNum->GetInteger() : 0; | 4687 int nPages = pPageNum ? pPageNum->GetInteger() : 0; |
4688 if (nPages < 1) | 4688 if (nPages < 1) |
4689 return FALSE; | 4689 return FALSE; |
4690 for (int i = 0; i < nPages; ++i) { | 4690 for (int i = 0; i < nPages; ++i) { |
4691 FX_SAFE_DWORD safeDeltaObj = hStream->GetBits(dwDeltaObjectsBits); | 4691 FX_SAFE_DWORD safeDeltaObj = hStream->GetBits(dwDeltaObjectsBits); |
4692 safeDeltaObj += dwObjLeastNum; | 4692 safeDeltaObj += dwObjLeastNum; |
4693 if (!safeDeltaObj.IsValid()) | 4693 if (!safeDeltaObj.IsValid()) |
4694 return FALSE; | 4694 return FALSE; |
4695 m_dwDeltaNObjsArray.Add(safeDeltaObj.ValueOrDie()); | 4695 m_dwDeltaNObjsArray.Add(safeDeltaObj.ValueOrDie()); |
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4945 if (!m_pLinearizedDict) | 4945 if (!m_pLinearizedDict) |
4946 return -1; | 4946 return -1; |
4947 CPDF_Array* pRange = m_pLinearizedDict->GetArray(FX_BSTRC("H")); | 4947 CPDF_Array* pRange = m_pLinearizedDict->GetArray(FX_BSTRC("H")); |
4948 if (!pRange) | 4948 if (!pRange) |
4949 return -1; | 4949 return -1; |
4950 CPDF_Object* pStreamLen = pRange->GetElementValue(1); | 4950 CPDF_Object* pStreamLen = pRange->GetElementValue(1); |
4951 if (!pStreamLen) | 4951 if (!pStreamLen) |
4952 return -1; | 4952 return -1; |
4953 return pStreamLen->GetInteger(); | 4953 return pStreamLen->GetInteger(); |
4954 } | 4954 } |
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