| // Copyright (c) 2011 The WebM project authors. All Rights Reserved. |
| // |
| // Use of this source code is governed by a BSD-style license |
| // that can be found in the LICENSE file in the root of the source |
| // tree. An additional intellectual property rights grant can be found |
| // in the file PATENTS. All contributing project authors may |
| // be found in the AUTHORS file in the root of the source tree. |
| |
| #ifndef __WEBMDSHOW_COMMON_SCRATCHBUF_HPP__ |
| #define __WEBMDSHOW_COMMON_SCRATCHBUF_HPP__ |
| |
| #pragma once |
| |
| #include <vector> |
| |
| #include "chromium/base/basictypes.h" |
| |
| namespace WebmUtil |
| { |
| |
| class ScratchBuf |
| { |
| public: |
| ScratchBuf(); |
| virtual ~ScratchBuf(); |
| |
| int32 Fill(uint8 val, int32 length); |
| |
| int32 Erase(uint32 offset, int32 length); |
| int32 Erase(uint64 offset, int32 length); |
| |
| int32 Rewrite(uint32 offset, const uint8* ptr_data, int32 length); |
| int32 Rewrite(uint64 offset, const uint8* ptr_data, int32 length); |
| |
| void Write(const uint8* ptr_data, int32 length); |
| void Write4Float(float val); |
| void Write1String(const char* ptr_str); |
| void Write1UTF8(const wchar_t* ptr_str); |
| |
| virtual void Write8UInt(uint64 val); |
| virtual void Write4UInt(uint32 val); |
| virtual void Write2UInt(uint16 val); |
| virtual void Write1UInt(uint8 val); |
| virtual void WriteUInt(uint64 val, int32 size); |
| |
| const uint8* GetBufferPtr() const; |
| uint64 GetBufferLength() const; |
| |
| void Reset(); |
| |
| protected: |
| std::vector<uint8> buf_; |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(ScratchBuf); |
| }; |
| |
| class EbmlScratchBuf : public ScratchBuf |
| { |
| public: |
| EbmlScratchBuf(); |
| virtual ~EbmlScratchBuf(); |
| |
| void Serialize8UInt(uint64 val); |
| void Serialize4Float(float val); |
| void Serialize4UInt(uint32 val); |
| void Serialize2UInt(uint16 val); |
| void Serialize1UInt(uint8 val); |
| |
| int32 RewriteID(uint32 offset, uint32 id, int32 length); |
| int32 RewriteID(uint64 offset, uint32 id, int32 length); |
| int32 RewriteUInt(uint32 offset, uint64 val, int32 length); |
| int32 RewriteUInt(uint64 offset, uint64 val, int32 length); |
| |
| virtual void Write8UInt(uint64 val); |
| virtual void Write4UInt(uint32 val); |
| virtual void Write2UInt(uint16 val); |
| virtual void Write1UInt(uint8 val); |
| virtual void WriteUInt(uint64 val, int32 size); |
| |
| void WriteID4(uint32 id); |
| void WriteID3(uint32 id); |
| void WriteID2(uint16 id); |
| void WriteID1(uint8 id); |
| private: |
| DISALLOW_COPY_AND_ASSIGN(EbmlScratchBuf); |
| }; |
| |
| } // WebmUtil namespace |
| |
| #endif // __WEBMDSHOW_COMMON_SCRATCHBUF_HPP__ |