1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
// 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
#ifndef _FX_CODEC_PROVIDER_H_
#define _FX_CODEC_PROVIDER_H_
class IFX_JpegProvider
{
public:
virtual void Release() = 0;
virtual void* CreateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height, int nComps, FX_BOOL ColorTransform) = 0;
virtual void DestroyDecoder(void* pDecoder) = 0;
virtual void DownScale(void* pDecoder, int dest_width, int dest_height) = 0;
virtual FX_BOOL Rewind(void* pDecoder) = 0;
virtual FX_LPBYTE GetNextLine(void* pDecoder) = 0;
virtual FX_DWORD GetSrcOffset(void* pDecoder) = 0;
virtual FX_BOOL LoadInfo(FX_LPCBYTE src_buf, FX_DWORD src_size, int& width, int& height,
int& num_components, int& bits_per_components, FX_BOOL& color_transform,
FX_LPBYTE* icc_buf_ptr = NULL, FX_DWORD* icc_length = NULL) = 0;
virtual FX_BOOL Encode(const class CFX_DIBSource* pSource, FX_LPBYTE& dest_buf, FX_STRSIZE& dest_size, int quality = 75,
FX_LPCBYTE icc_buf = NULL, FX_DWORD icc_length = 0) = 0;
virtual void* Start() = 0;
virtual void Finish(void* pContext) = 0;
virtual void Input(void* pContext, FX_LPCBYTE src_buf, FX_DWORD src_size) = 0;
virtual int ReadHeader(void* pContext, int* width, int* height, int* nComps) = 0;
virtual int StartScanline(void* pContext, int down_scale) = 0;
virtual FX_BOOL ReadScanline(void* pContext, FX_LPBYTE dest_buf) = 0;
virtual FX_DWORD GetAvailInput(void* pContext, FX_LPBYTE* avail_buf_ptr = NULL) = 0;
protected:
~IFX_JpegProvider() { }
};
#endif
|
