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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 "../../fx_zlib.h" | 7 #include "../../fx_zlib.h" |
| 8 #include "../../../include/fxcodec/fx_codec.h" | 8 #include "../../../include/fxcodec/fx_codec.h" |
| 9 #include "codec_int.h" | 9 #include "codec_int.h" |
| 10 extern "C" | 10 extern "C" |
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| 67 void FPDFAPI_FlateEnd(void* context) | 67 void FPDFAPI_FlateEnd(void* context) |
| 68 { | 68 { |
| 69 inflateEnd((z_stream*)context); | 69 inflateEnd((z_stream*)context); |
| 70 ((z_stream*)context)->zfree(0, context); | 70 ((z_stream*)context)->zfree(0, context); |
| 71 } | 71 } |
| 72 void FPDFAPI_FlateCompress(unsigned char* dest_buf, unsigned long* dest_size
, const unsigned char* src_buf, unsigned long src_size) | 72 void FPDFAPI_FlateCompress(unsigned char* dest_buf, unsigned long* dest_size
, const unsigned char* src_buf, unsigned long src_size) |
| 73 { | 73 { |
| 74 compress(dest_buf, dest_size, src_buf, src_size); | 74 compress(dest_buf, dest_size, src_buf, src_size); |
| 75 } | 75 } |
| 76 } | 76 } |
| 77 class CLZWDecoder : public CFX_Object | 77 class CLZWDecoder |
| 78 { | 78 { |
| 79 public: | 79 public: |
| 80 FX_BOOL Decode(FX_LPBYTE output, FX_DWORD& outlen, const FX_BYTE* input, FX_
DWORD& size, FX_BOOL bEarlyChange); | 80 FX_BOOL Decode(FX_LPBYTE output, FX_DWORD& outlen, const FX_BYTE* input, FX_
DWORD& size, FX_BOOL bEarlyChange); |
| 81 private: | 81 private: |
| 82 FX_DWORD m_InPos; | 82 FX_DWORD m_InPos; |
| 83 FX_DWORD m_OutPos; | 83 FX_DWORD m_OutPos; |
| 84 FX_LPBYTE m_pOutput; | 84 FX_LPBYTE m_pOutput; |
| 85 const FX_BYTE* m_pInput; | 85 const FX_BYTE* m_pInput; |
| 86 FX_BOOL m_Early; | 86 FX_BOOL m_Early; |
| 87 void AddCode(FX_DWORD prefix_code, FX_BYTE append_char); | 87 void AddCode(FX_DWORD prefix_code, FX_BYTE append_char); |
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| 937 dest_size = src_size + src_size / 1000 + 12; | 937 dest_size = src_size + src_size / 1000 + 12; |
| 938 dest_buf = FX_Alloc( FX_BYTE, dest_size); | 938 dest_buf = FX_Alloc( FX_BYTE, dest_size); |
| 939 if (dest_buf == NULL) { | 939 if (dest_buf == NULL) { |
| 940 return FALSE; | 940 return FALSE; |
| 941 } | 941 } |
| 942 unsigned long temp_size = dest_size; | 942 unsigned long temp_size = dest_size; |
| 943 FPDFAPI_FlateCompress(dest_buf, &temp_size, src_buf, src_size); | 943 FPDFAPI_FlateCompress(dest_buf, &temp_size, src_buf, src_size); |
| 944 dest_size = (FX_DWORD)temp_size; | 944 dest_size = (FX_DWORD)temp_size; |
| 945 return TRUE; | 945 return TRUE; |
| 946 } | 946 } |
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