summaryrefslogtreecommitdiff
path: root/core/src/fpdfapi/fpdf_render/render_int.h
blob: 9bde4be8774c438a975486ca920891da947d46f7 (plain)
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
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
// 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 _FPDF_PAGEOBJ_H_
#include "../../../include/fpdfapi/fpdf_pageobj.h"
#endif
class CPDF_QuickStretcher;
#define TYPE3_MAX_BLUES		16
class CPDF_Type3Glyphs : public CFX_Object
{
public:
    CPDF_Type3Glyphs()
    {
        m_GlyphMap.InitHashTable(253);
        m_TopBlueCount = m_BottomBlueCount = 0;
    }
    ~CPDF_Type3Glyphs();
    CFX_MapPtrToPtr			m_GlyphMap;
    void					AdjustBlue(FX_FLOAT top, FX_FLOAT bottom, int& top_line, int& bottom_line);

    int						m_TopBlue[TYPE3_MAX_BLUES], m_BottomBlue[TYPE3_MAX_BLUES];
    int						m_TopBlueCount, m_BottomBlueCount;
};
class CFX_GlyphBitmap;
class CPDF_Type3Cache : public CFX_Object
{
public:
    CPDF_Type3Cache(CPDF_Type3Font* pFont)
    {
        m_pFont = pFont;
    }
    ~CPDF_Type3Cache();
    CFX_GlyphBitmap*		LoadGlyph(FX_DWORD charcode, const CFX_AffineMatrix* pMatrix, FX_FLOAT retinaScaleX = 1.0f, FX_FLOAT retinaScaleY = 1.0f);
protected:
    CFX_GlyphBitmap*		RenderGlyph(CPDF_Type3Glyphs* pSize, FX_DWORD charcode, const CFX_AffineMatrix* pMatrix, FX_FLOAT retinaScaleX = 1.0f, FX_FLOAT retinaScaleY = 1.0f);
    CPDF_Type3Font*			m_pFont;
    CFX_MapByteStringToPtr	m_SizeMap;
};
class CPDF_TransferFunc : public CFX_Object
{
public:
    CPDF_Document*	m_pPDFDoc;
    FX_BYTE			m_Samples[256 * 3];
    FX_BOOL			m_bIdentity;

    CFX_DIBSource*	TranslateImage(const CFX_DIBSource* pSrc, FX_BOOL bAutoDropSrc);
    FX_COLORREF		TranslateColor(FX_COLORREF src);
};
typedef CFX_MapPtrTemplate<CPDF_Font*, CPDF_CountedObject<CPDF_Type3Cache*>*> CPDF_Type3CacheMap;
typedef CFX_MapPtrTemplate<CPDF_Object*, CPDF_CountedObject<CPDF_TransferFunc*>*> CPDF_TransferFuncMap;
class CPDF_DocRenderData : public CFX_Object
{
public:
    CPDF_DocRenderData(CPDF_Document* pPDFDoc = NULL);
    ~CPDF_DocRenderData();
    FX_BOOL				Initialize();
    CPDF_Type3Cache*	GetCachedType3(CPDF_Type3Font* pFont);
    CPDF_TransferFunc*	GetTransferFunc(CPDF_Object* pObj);
    CFX_FontCache*		GetFontCache()
    {
        return m_pFontCache;
    }
    void				Clear(FX_BOOL bRelease = FALSE);
    void				ReleaseCachedType3(CPDF_Type3Font* pFont);
    void				ReleaseTransferFunc(CPDF_Object* pObj);
private:
    CPDF_Document*		m_pPDFDoc;
    CFX_FontCache*		m_pFontCache;
    CPDF_Type3CacheMap	m_Type3FaceMap;
    CPDF_TransferFuncMap	m_TransferFuncMap;
};
struct _PDF_RenderItem {
public:
    CPDF_PageObjects*			m_pObjectList;
    CFX_AffineMatrix			m_Matrix;
};
typedef CFX_ArrayTemplate<_PDF_RenderItem>	CPDF_RenderLayer;
class IPDF_ObjectRenderer : public CFX_Object
{
public:
    static IPDF_ObjectRenderer* Create(int type);
    virtual ~IPDF_ObjectRenderer() {}
    virtual FX_BOOL Start(CPDF_RenderStatus* pRenderStatus, const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStdCS, int blendType = FXDIB_BLEND_NORMAL) = 0;
    virtual FX_BOOL Continue(IFX_Pause* pPause) = 0;
    FX_BOOL		m_Result;
};
class CPDF_RenderStatus : public CFX_Object
{
public:
    CPDF_RenderStatus();
    ~CPDF_RenderStatus();
    FX_BOOL			Initialize(int level, class CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, const CFX_AffineMatrix* pDeviceMatrix,
                               const CPDF_PageObject* pStopObj, const CPDF_RenderStatus* pParentStatus,
                               const CPDF_GraphicStates* pInitialStates, const CPDF_RenderOptions* pOptions,
                               int transparency, FX_BOOL bDropObjects, CPDF_Dictionary* pFormResource = NULL,
                               FX_BOOL bStdCS = FALSE,	CPDF_Type3Char* pType3Char = NULL, FX_ARGB fill_color = 0,
                               FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE);
    void			RenderObjectList(const CPDF_PageObjects* pObjs, const CFX_AffineMatrix* pObj2Device);
    void			RenderSingleObject(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device);
    FX_BOOL			ContinueSingleObject(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, IFX_Pause* pPause);
    CPDF_RenderOptions	m_Options;
    CPDF_Dictionary*    m_pFormResource;
    CPDF_Dictionary*    m_pPageResource;
    CFX_PtrArray		m_Type3FontCache;
    CPDF_RenderContext* GetContext()
    {
        return m_pContext;
    }
protected:
    friend class	CPDF_ImageRenderer;
    friend class	CPDF_RenderContext;
    void			ProcessClipPath(CPDF_ClipPath ClipPath, const CFX_AffineMatrix* pObj2Device);
    void			DrawClipPath(CPDF_ClipPath ClipPath, const CFX_AffineMatrix* pObj2Device);
    FX_BOOL			ProcessTransparency(const CPDF_PageObject* PageObj, const CFX_AffineMatrix* pObj2Device);
    void			ProcessObjectNoClip(const CPDF_PageObject* PageObj, const CFX_AffineMatrix* pObj2Device);
    void			DrawObjWithBackground(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device);
    FX_BOOL         DrawObjWithBlend(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device);
    FX_BOOL			ProcessPath(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device);
    void			ProcessPathPattern(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device, int& filltype, FX_BOOL& bStroke);
    void			DrawPathWithPattern(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device, CPDF_Color* pColor, FX_BOOL bStroke);
    void			DrawTilingPattern(CPDF_TilingPattern* pPattern, CPDF_PageObject* pPageObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStroke);
    void			DrawShadingPattern(CPDF_ShadingPattern* pPattern, CPDF_PageObject* pPageObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStroke);
    FX_BOOL			SelectClipPath(CPDF_PathObject* pPathObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStroke);
    FX_BOOL			ProcessImage(CPDF_ImageObject* pImageObj, const CFX_AffineMatrix* pObj2Device);
    FX_BOOL			OutputBitmapAlpha(CPDF_ImageObject* pImageObj, const CFX_AffineMatrix* pImage2Device);
    FX_BOOL			OutputImage(CPDF_ImageObject* pImageObj, const CFX_AffineMatrix* pImage2Device);
    FX_BOOL			OutputDIBSource(const CFX_DIBSource* pOutputBitmap, FX_ARGB fill_argb, int bitmap_alpha,
                                    const CFX_AffineMatrix* pImage2Device, CPDF_ImageCache* pImageCache, FX_DWORD flags);
    void			CompositeDIBitmap(CFX_DIBitmap* pDIBitmap, int left, int top, FX_ARGB mask_argb,
                                      int bitmap_alpha, int blend_mode, int bIsolated);
    FX_BOOL			ProcessInlines(CPDF_InlineImages* pInlines, const CFX_AffineMatrix* pObj2Device);
    FX_BOOL			ProcessShading(CPDF_ShadingObject* pShadingObj, const CFX_AffineMatrix* pObj2Device);
    void			DrawShading(CPDF_ShadingPattern* pPattern, CFX_AffineMatrix* pMatrix, FX_RECT& clip_rect,
                                int alpha, FX_BOOL bAlphaMode);
    FX_BOOL			ProcessType3Text(const CPDF_TextObject* textobj, const CFX_AffineMatrix* pObj2Device);
    FX_BOOL			ProcessText(const CPDF_TextObject* textobj, const CFX_AffineMatrix* pObj2Device, CFX_PathData* pClippingPath);
    void			DrawTextPathWithPattern(const CPDF_TextObject* textobj, const CFX_AffineMatrix* pObj2Device,
                                            CPDF_Font* pFont, FX_FLOAT font_size,
                                            const CFX_AffineMatrix* pTextMatrix, FX_BOOL bFill, FX_BOOL bStroke);
    FX_BOOL			ProcessForm(CPDF_FormObject* pFormObj, const CFX_AffineMatrix* pObj2Device);
    CFX_DIBitmap*	GetBackdrop(const CPDF_PageObject* pObj, const FX_RECT& rect, int& left, int& top,
                                FX_BOOL bBackAlphaRequired);
    CFX_DIBitmap*	LoadSMask(CPDF_Dictionary* pSMaskDict, FX_RECT* pClipRect, const CFX_AffineMatrix* pMatrix);
    void			Init(CPDF_RenderContext* pParent);
    static class CPDF_Type3Cache*	GetCachedType3(CPDF_Type3Font* pFont);
    static CPDF_GraphicStates* CloneObjStates(const CPDF_GraphicStates* pPathObj, FX_BOOL bStroke);
    CPDF_TransferFunc*	GetTransferFunc(CPDF_Object* pObject) const;
    FX_ARGB			GetFillArgb(const CPDF_PageObject* pObj, FX_BOOL bType3 = FALSE) const;
    FX_ARGB			GetStrokeArgb(const CPDF_PageObject* pObj) const;
    CPDF_RenderContext*		m_pContext;
    FX_BOOL					m_bStopped;
    void			DitherObjectArea(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device);
    FX_BOOL			GetObjectClippedRect(const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bLogical, FX_RECT &rect) const;
    void			GetScaledMatrix(CFX_Matrix &matrix) const;
protected:
    int						m_Level;
    CFX_RenderDevice*		m_pDevice;
    CFX_AffineMatrix		m_DeviceMatrix;
    CPDF_ClipPath			m_LastClipPath;
    const CPDF_PageObject*	m_pCurObj;
    const CPDF_PageObject*	m_pStopObj;
    CPDF_GraphicStates		m_InitialStates;
    int						m_HalftoneLimit;
    IPDF_ObjectRenderer*	m_pObjectRenderer;
    FX_BOOL					m_bPrint;
    int						m_Transparency;
    int						m_DitherBits;
    FX_BOOL					m_bDropObjects;
    FX_BOOL					m_bStdCS;
    FX_DWORD                m_GroupFamily;
    FX_BOOL                 m_bLoadMask;
    CPDF_Type3Char *        m_pType3Char;
    FX_ARGB					m_T3FillColor;
    int                     m_curBlend;
};
class CPDF_ImageLoader : public CFX_Object
{
public:
    CPDF_ImageLoader()
    {
        m_pBitmap = NULL;
        m_pMask = NULL;
        m_MatteColor = 0;
        m_bCached = FALSE;
        m_nDownsampleWidth = 0;
        m_nDownsampleHeight = 0;
    }

    FX_BOOL					Load(const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE, CPDF_RenderStatus* pRenderStatus = NULL);

    FX_BOOL					StartLoadImage(const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, FX_LPVOID& LoadHandle, FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE, CPDF_RenderStatus* pRenderStatus = NULL, FX_INT32 nDownsampleWidth = 0, FX_INT32 nDownsampleHeight = 0);
    FX_BOOL					Continue(FX_LPVOID LoadHandle, IFX_Pause* pPause);
    ~CPDF_ImageLoader();
    CFX_DIBSource*			m_pBitmap;
    CFX_DIBSource*			m_pMask;
    FX_DWORD				m_MatteColor;
    FX_BOOL					m_bCached;
protected:
    FX_INT32                m_nDownsampleWidth;
    FX_INT32                m_nDownsampleHeight;
};
class CPDF_ProgressiveImageLoaderHandle : public CFX_Object
{
public:
    CPDF_ProgressiveImageLoaderHandle();
    ~CPDF_ProgressiveImageLoaderHandle();

    FX_BOOL			Start(CPDF_ImageLoader* pImageLoader, const CPDF_ImageObject* pImage, CPDF_PageRenderCache* pCache, FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE, CPDF_RenderStatus* pRenderStatus = NULL, FX_INT32 nDownsampleWidth = 0, FX_INT32 nDownsampleHeight = 0);
    FX_BOOL			Continue(IFX_Pause* pPause);
protected:
    CPDF_ImageLoader*	m_pImageLoader;
    CPDF_PageRenderCache* m_pCache;
    CPDF_ImageObject* m_pImage;
    FX_INT32            m_nDownsampleWidth;
    FX_INT32            m_nDownsampleHeight;
};
class CFX_ImageTransformer;
class CPDF_ImageRenderer : public IPDF_ObjectRenderer
{
public:
    CPDF_ImageRenderer();
    ~CPDF_ImageRenderer();
    FX_BOOL		Start(CPDF_RenderStatus* pStatus, const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStdCS, int blendType = FXDIB_BLEND_NORMAL);
    FX_BOOL		Start(CPDF_RenderStatus* pStatus, const CFX_DIBSource* pDIBSource, FX_ARGB bitmap_argb,
                      int bitmap_alpha, const CFX_AffineMatrix* pImage2Device, FX_DWORD flags, FX_BOOL bStdCS, int blendType = FXDIB_BLEND_NORMAL);
    FX_BOOL		Continue(IFX_Pause* pPause);
protected:
    CPDF_RenderStatus*	m_pRenderStatus;
    CPDF_ImageObject*	m_pImageObject;
    int					m_Status;
    const CFX_AffineMatrix* m_pObj2Device;
    CFX_AffineMatrix	m_ImageMatrix;
    CPDF_ImageLoader	m_Loader;
    const CFX_DIBSource*		m_pDIBSource;
    CFX_DIBitmap*		m_pClone;
    int					m_BitmapAlpha;
    FX_BOOL				m_bPatternColor;
    CPDF_Pattern*		m_pPattern;
    FX_ARGB				m_FillArgb;
    FX_DWORD			m_Flags;
    CPDF_QuickStretcher*	m_pQuickStretcher;
    CFX_ImageTransformer*	m_pTransformer;
    CPDF_ImageRenderer*	m_pRenderer2;
    FX_LPVOID			m_DeviceHandle;
    FX_LPVOID           m_LoadHandle;
    FX_BOOL				m_bStdCS;
    int					m_BlendType;
    FX_BOOL				StartBitmapAlpha();
    FX_BOOL				StartDIBSource();
    FX_BOOL				StartRenderDIBSource();
    FX_BOOL				StartLoadDIBSource();
    FX_BOOL				DrawMaskedImage();
    FX_BOOL				DrawPatternImage(const CFX_Matrix* pObj2Device);
};
class CPDF_ScaledRenderBuffer : public CFX_Object
{
public:
    CPDF_ScaledRenderBuffer();
    ~CPDF_ScaledRenderBuffer();
    FX_BOOL				Initialize(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, FX_RECT* pRect,
                                   const CPDF_PageObject* pObj, const CPDF_RenderOptions *pOptions = NULL, int max_dpi = 0);
    CFX_RenderDevice*	GetDevice()
    {
        return m_pBitmapDevice ? m_pBitmapDevice : m_pDevice;
    }
    CFX_AffineMatrix*	GetMatrix()
    {
        return &m_Matrix;
    }
    void				OutputToDevice();
private:
    CFX_RenderDevice*	m_pDevice;
    CPDF_RenderContext*	m_pContext;
    FX_RECT				m_Rect;
    const CPDF_PageObject* m_pObject;
    CFX_FxgeDevice*	m_pBitmapDevice;
    CFX_AffineMatrix	m_Matrix;
};
class ICodec_ScanlineDecoder;
class CPDF_QuickStretcher : public CFX_Object
{
public:
    CPDF_QuickStretcher();
    ~CPDF_QuickStretcher();
    FX_BOOL		Start(CPDF_ImageObject* pImageObj, CFX_AffineMatrix* pImage2Device, const FX_RECT* pClipBox);
    FX_BOOL		Continue(IFX_Pause* pPause);
    CFX_DIBitmap*	m_pBitmap;
    int			m_ResultLeft, m_ResultTop, m_ClipLeft, m_ClipTop;
    int			m_DestWidth, m_DestHeight, m_ResultWidth, m_ResultHeight;
    int			m_Bpp, m_SrcWidth, m_SrcHeight;
    FX_BOOL		m_bFlipX, m_bFlipY;
    CPDF_ColorSpace*	m_pCS;
    ICodec_ScanlineDecoder*	m_pDecoder;
    CPDF_StreamAcc m_StreamAcc;
    int			m_LineIndex;
};
class CPDF_DeviceBuffer : public CFX_Object
{
public:
    CPDF_DeviceBuffer();
    ~CPDF_DeviceBuffer();
    FX_BOOL				Initialize(CPDF_RenderContext* pContext, CFX_RenderDevice* pDevice, FX_RECT* pRect,
                                   const CPDF_PageObject* pObj, int max_dpi = 0);
    void				OutputToDevice();
    CFX_DIBitmap*		GetBitmap() const
    {
        return m_pBitmap;
    }
    const CFX_AffineMatrix*	GetMatrix() const
    {
        return &m_Matrix;
    }
private:
    CFX_RenderDevice*	m_pDevice;
    CPDF_RenderContext*	m_pContext;
    FX_RECT				m_Rect;
    const CPDF_PageObject* m_pObject;
    CFX_DIBitmap*		m_pBitmap;
    CFX_AffineMatrix	m_Matrix;
};
class CPDF_ImageCache : public CFX_Object
{
public:
    CPDF_ImageCache(CPDF_Document* pDoc, CPDF_Stream* pStream);
    ~CPDF_ImageCache();
    void				ClearImageData();
    void				Reset(const CFX_DIBitmap* pBitmap);
    FX_BOOL				GetCachedBitmap(CFX_DIBSource*& pBitmap, CFX_DIBSource*& pMask, FX_DWORD& MatteColor, CPDF_Dictionary* pPageResources,
                                        FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE,
                                        CPDF_RenderStatus* pRenderStatus = NULL, FX_INT32 downsampleWidth = 0, FX_INT32 downsampleHeight = 0);
    FX_DWORD			EstimateSize() const
    {
        return m_dwCacheSize;
    }
    FX_DWORD			GetTimeCount() const
    {
        return m_dwTimeCount;
    }
    CPDF_Stream*		GetStream() const
    {
        return m_pStream;
    }
    void				SetTimeCount(FX_DWORD dwTimeCount)
    {
        m_dwTimeCount = dwTimeCount;
    }
    int					m_dwTimeCount;
public:
    int					StartGetCachedBitmap(CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources,
            FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0,
            FX_BOOL bLoadMask = FALSE, CPDF_RenderStatus* pRenderStatus = NULL, FX_INT32 downsampleWidth = 0, FX_INT32 downsampleHeight = 0);
    int					Continue(IFX_Pause* pPause);
    int 				ContinueGetCachedBitmap();
    CFX_DIBSource*		DetachBitmap();
    CFX_DIBSource*		DetachMask();
    CFX_DIBSource*		m_pCurBitmap;
    CFX_DIBSource*		m_pCurMask;
    FX_DWORD			m_MatteColor;
    CPDF_RenderStatus*  m_pRenderStatus;
protected:
    CPDF_Document*		m_pDocument;
    CPDF_Stream*		m_pStream;
    CFX_DIBSource*		m_pCachedBitmap;
    CFX_DIBSource*		m_pCachedMask;
    FX_DWORD			m_dwCacheSize;
    void	CalcSize();
};
typedef struct {
    FX_FLOAT			m_DecodeMin;
    FX_FLOAT			m_DecodeStep;
    int					m_ColorKeyMin;
    int					m_ColorKeyMax;
} DIB_COMP_DATA;
class CPDF_DIBSource : public CFX_DIBSource
{
public:
    CPDF_DIBSource();
    virtual ~CPDF_DIBSource();
    FX_BOOL				Load(CPDF_Document* pDoc, const CPDF_Stream* pStream,
                             CPDF_DIBSource** ppMask, FX_DWORD* pMatteColor,
                             CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources,
                             FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE);
    virtual FX_BOOL		SkipToScanline(int line, IFX_Pause* pPause) const;
    virtual	FX_LPBYTE	GetBuffer() const;
    virtual FX_LPCBYTE	GetScanline(int line) const;
    virtual void		DownSampleScanline(int line, FX_LPBYTE dest_scan, int dest_bpp,
                                           int dest_width, FX_BOOL bFlipX, int clip_left, int clip_width) const;
    virtual void		SetDownSampleSize(int dest_width, int dest_height) const;
    CFX_DIBitmap*		GetBitmap() const;
    void				ReleaseBitmap(CFX_DIBitmap*) const;
    void				ClearImageData();
public:
    int					StartLoadDIBSource(CPDF_Document* pDoc, const CPDF_Stream* pStream, FX_BOOL bHasMask,
                                           CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources,
                                           FX_BOOL bStdCS = FALSE, FX_DWORD GroupFamily = 0, FX_BOOL bLoadMask = FALSE);
    int					ContinueLoadDIBSource(IFX_Pause* pPause);
    int					StratLoadMask();
    int					StartLoadMaskDIB();
    int					ContinueLoadMaskDIB(IFX_Pause* pPause);
    int					ContinueToLoadMask();
    CPDF_DIBSource*		DetachMask();
    CPDF_DIBSource*		m_pMask;
    FX_DWORD			m_MatteColor;
    FX_LPVOID			m_pJbig2Context;
    CPDF_StreamAcc*		m_pGlobalStream;
    FX_BOOL				m_bStdCS;
    int					m_Status;
    CPDF_Object*		m_pMaskStream;
    FX_BOOL				m_bHasMask;
protected:
    FX_BOOL				LoadColorInfo(CPDF_Dictionary* pFormResources, CPDF_Dictionary* pPageResources);
    CPDF_DIBSource*		LoadMask(FX_DWORD& MatteColor);
    CPDF_DIBSource*		LoadMaskDIB(CPDF_Stream* pMask);
    void				LoadJpxBitmap();
    void				LoadJbig2Bitmap();
    void				LoadPalette();
    FX_BOOL				CreateDecoder();
    void				TranslateScanline24bpp(FX_LPBYTE dest_scan, FX_LPCBYTE src_scan) const;
	FX_DWORD            GetValidBpp() const;

    CPDF_Document*		m_pDocument;
    const CPDF_Stream*	m_pStream;
    CPDF_StreamAcc*		m_pStreamAcc;
    const CPDF_Dictionary*	m_pDict;
    CPDF_ColorSpace*	m_pColorSpace;
    FX_DWORD			m_Family, m_bpc, m_nComponents, m_GroupFamily;
    FX_BOOL				m_bLoadMask;
    FX_BOOL				m_bDefaultDecode, m_bImageMask, m_bColorKey;
    DIB_COMP_DATA*		m_pCompData;
    FX_LPBYTE			m_pLineBuf;
    FX_LPBYTE			m_pMaskedLine;
    CFX_DIBitmap*		m_pCachedBitmap;
    ICodec_ScanlineDecoder*	m_pDecoder;
};
#ifdef _FPDFAPI_MINI_
#define FPDF_HUGE_IMAGE_SIZE	3000000
#else
#define FPDF_HUGE_IMAGE_SIZE	60000000
#endif
class CPDF_DIBTransferFunc : public CFX_FilteredDIB
{
public:
    CPDF_DIBTransferFunc(const CPDF_TransferFunc* pTransferFunc);
    virtual FXDIB_Format	GetDestFormat();
    virtual FX_ARGB*		GetDestPalette()
    {
        return NULL;
    }
    virtual void			TranslateScanline(FX_LPBYTE dest_buf, FX_LPCBYTE src_buf) const;
    virtual void			TranslateDownSamples(FX_LPBYTE dest_buf, FX_LPCBYTE src_buf, int pixels, int Bpp) const;
    FX_LPCBYTE				m_RampR;
    FX_LPCBYTE				m_RampG;
    FX_LPCBYTE				m_RampB;
};
struct _CPDF_UniqueKeyGen {
    void		Generate(int count, ...);
    FX_CHAR		m_Key[128];
    int			m_KeyLen;
};