// 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__ |