1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "../../../include/fxge/fx_dib.h"
8 #include "dib_int.h"
9 int SDP_Table[513] = {
10 256, 256, 256, 256, 256, 256, 256, 256, 256, 255, 255, 255, 255, 255, 255, 254, 254, 254, 254,
11 253, 253, 253, 252, 252, 252, 251, 251, 251, 250, 250, 249, 249, 249, 248, 248, 247, 247, 246,
12 246, 245, 244, 244, 243, 243, 242, 242, 241, 240, 240, 239, 238, 238, 237, 236, 236, 235, 234,
13 233, 233, 232, 231, 230, 230, 229, 228, 227, 226, 226, 225, 224, 223, 222, 221, 220, 219, 218,
14 218, 217, 216, 215, 214, 213, 212, 211, 210, 209, 208, 207, 206, 205, 204, 203, 202, 201, 200,
15 199, 198, 196, 195, 194, 193, 192, 191, 190, 189, 188, 186, 185, 184, 183, 182, 181, 179, 178,
16 177, 176, 175, 173, 172, 171, 170, 169, 167, 166, 165, 164, 162, 161, 160, 159, 157, 156, 155,
17 154, 152, 151, 150, 149, 147, 146, 145, 143, 142, 141, 140, 138, 137, 136, 134, 133, 132, 130,
18 129, 128, 126, 125, 124, 122, 121, 120, 119, 117, 116, 115, 113, 112, 111, 109, 108, 107, 105,
19 104, 103, 101, 100, 99, 97, 96, 95, 93, 92, 91, 89, 88, 87, 85, 84, 83, 81, 80, 79, 77, 76, 75,
20 73, 72, 71, 69, 68, 67, 66, 64, 63, 62, 60, 59, 58, 57, 55, 54, 53, 52, 50, 49, 48, 47, 45, 44,
21 43, 42, 40, 39, 38, 37, 36, 34, 33, 32, 31, 30, 28, 27, 26, 25, 24, 23, 21, 20, 19, 18, 17, 16,
22 15, 14, 13, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 0, -1, -2, -3, -4, -5, -6, -7, -7, -8, -9, -10,
23 -11, -12, -12, -13, -14, -15, -15, -16, -17, -17, -18, -19, -19, -20, -21, -21, -22, -22, -23, -24,
24 -24, -25, -25, -26, -26, -27, -27, -27, -28, -28, -29, -29, -30, -30, -30, -31, -31, -31, -32, -32,
25 -32, -33, -33, -33, -33, -34, -34, -34, -34, -35, -35, -35, -35, -35, -36, -36, -36, -36, -36, -36,
26 -36, -36, -36, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37,
27 -37, -37, -37, -37, -36, -36, -36, -36, -36, -36, -36, -36, -36, -35, -35, -35, -35, -35, -35, -34,
28 -34, -34, -34, -34, -33, -33, -33, -33, -33, -32, -32, -32, -32, -31, -31, -31, -31, -30, -30, -30,
29 -30, -29, -29, -29, -29, -28, -28, -28, -27, -27, -27, -27, -26, -26, -26, -25, -25, -25, -24, -24,
30 -24, -23, -23, -23, -22, -22, -22, -22, -21, -21, -21, -20, -20, -20, -19, -19, -19, -18, -18, -18,
31 -17, -17, -17, -16, -16, -16, -15, -15, -15, -14, -14, -14, -13, -13, -13, -12, -12, -12, -11, -11,
32 -11, -10, -10, -10, -9, -9, -9, -9, -8, -8, -8, -7, -7, -7, -7, -6, -6, -6, -6, -5, -5, -5, -5, -4,
33 -4, -4, -4, -3, -3, -3, -3, -3, -2, -2, -2, -2, -2, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, 0, 0,
34 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
35 };
36 class CFX_BilinearMatrix : public CPDF_FixedMatrix
37 {
38 public:
CFX_BilinearMatrix(const CFX_AffineMatrix & src,int bits)39 CFX_BilinearMatrix(const CFX_AffineMatrix& src, int bits): CPDF_FixedMatrix(src, bits)
40 {}
Transform(int x,int y,int & x1,int & y1,int & res_x,int & res_y)41 inline void Transform(int x, int y, int& x1, int& y1, int&res_x, int&res_y)
42 {
43 x1 = a * x + c * y + e + base / 2;
44 y1 = b * x + d * y + f + base / 2;
45 res_x = x1 % base;
46 res_y = y1 % base;
47 if (res_x < 0 && res_x > -base) {
48 res_x = base + res_x;
49 }
50 if (res_y < 0 && res_x > -base) {
51 res_y = base + res_y;
52 }
53 x1 /= base;
54 y1 /= base;
55 }
56 };
SwapXY(FX_BOOL bXFlip,FX_BOOL bYFlip,const FX_RECT * pDestClip) const57 CFX_DIBitmap* CFX_DIBSource::SwapXY(FX_BOOL bXFlip, FX_BOOL bYFlip, const FX_RECT* pDestClip) const
58 {
59 FX_RECT dest_clip(0, 0, m_Height, m_Width);
60 if (pDestClip) {
61 dest_clip.Intersect(*pDestClip);
62 }
63 if (dest_clip.IsEmpty()) {
64 return NULL;
65 }
66 CFX_DIBitmap* pTransBitmap = new CFX_DIBitmap;
67 int result_height = dest_clip.Height(), result_width = dest_clip.Width();
68 if (!pTransBitmap->Create(result_width, result_height, GetFormat())) {
69 delete pTransBitmap;
70 return NULL;
71 }
72 pTransBitmap->CopyPalette(m_pPalette);
73 int dest_pitch = pTransBitmap->GetPitch();
74 FX_LPBYTE dest_buf = pTransBitmap->GetBuffer();
75 int row_start = bXFlip ? m_Height - dest_clip.right : dest_clip.left;
76 int row_end = bXFlip ? m_Height - dest_clip.left : dest_clip.right;
77 int col_start = bYFlip ? m_Width - dest_clip.bottom : dest_clip.top;
78 int col_end = bYFlip ? m_Width - dest_clip.top : dest_clip.bottom;
79 if (GetBPP() == 1) {
80 FXSYS_memset8(dest_buf, 0xff, dest_pitch * result_height);
81 for (int row = row_start; row < row_end; row ++) {
82 FX_LPCBYTE src_scan = GetScanline(row);
83 int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - dest_clip.left;
84 FX_LPBYTE dest_scan = dest_buf;
85 if (bYFlip) {
86 dest_scan += (result_height - 1) * dest_pitch;
87 }
88 int dest_step = bYFlip ? -dest_pitch : dest_pitch;
89 for (int col = col_start; col < col_end; col ++) {
90 if (!(src_scan[col / 8] & (1 << (7 - col % 8)))) {
91 dest_scan[dest_col / 8] &= ~(1 << (7 - dest_col % 8));
92 }
93 dest_scan += dest_step;
94 }
95 }
96 } else {
97 int nBytes = GetBPP() / 8;
98 int dest_step = bYFlip ? -dest_pitch : dest_pitch;
99 if (nBytes == 3) {
100 dest_step -= 2;
101 }
102 for (int row = row_start; row < row_end; row ++) {
103 int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - dest_clip.left;
104 FX_LPBYTE dest_scan = dest_buf + dest_col * nBytes;
105 if (bYFlip) {
106 dest_scan += (result_height - 1) * dest_pitch;
107 }
108 if (nBytes == 4) {
109 FX_DWORD* src_scan = (FX_DWORD*)GetScanline(row) + col_start;
110 for (int col = col_start; col < col_end; col ++) {
111 *(FX_DWORD*)dest_scan = *src_scan++;
112 dest_scan += dest_step;
113 }
114 } else {
115 FX_LPCBYTE src_scan = GetScanline(row) + col_start * nBytes;
116 if (nBytes == 1)
117 for (int col = col_start; col < col_end; col ++) {
118 *dest_scan = *src_scan++;
119 dest_scan += dest_step;
120 }
121 else
122 for (int col = col_start; col < col_end; col ++) {
123 *dest_scan++ = *src_scan++;
124 *dest_scan++ = *src_scan++;
125 *dest_scan = *src_scan++;
126 dest_scan += dest_step;
127 }
128 }
129 }
130 }
131 if (m_pAlphaMask) {
132 dest_pitch = pTransBitmap->m_pAlphaMask->GetPitch();
133 dest_buf = pTransBitmap->m_pAlphaMask->GetBuffer();
134 int dest_step = bYFlip ? -dest_pitch : dest_pitch;
135 for (int row = row_start; row < row_end; row ++) {
136 int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - dest_clip.left;
137 FX_LPBYTE dest_scan = dest_buf + dest_col;
138 if (bYFlip) {
139 dest_scan += (result_height - 1) * dest_pitch;
140 }
141 FX_LPCBYTE src_scan = m_pAlphaMask->GetScanline(row) + col_start;
142 for (int col = col_start; col < col_end; col ++) {
143 *dest_scan = *src_scan++;
144 dest_scan += dest_step;
145 }
146 }
147 }
148 return pTransBitmap;
149 }
150 #define FIX16_005 0.05f
_FXDIB_SwapClipBox(FX_RECT & clip,int width,int height,FX_BOOL bFlipX,FX_BOOL bFlipY)151 FX_RECT _FXDIB_SwapClipBox(FX_RECT& clip, int width, int height, FX_BOOL bFlipX, FX_BOOL bFlipY)
152 {
153 FX_RECT rect;
154 if (bFlipY) {
155 rect.left = height - clip.top;
156 rect.right = height - clip.bottom;
157 } else {
158 rect.left = clip.top;
159 rect.right = clip.bottom;
160 }
161 if (bFlipX) {
162 rect.top = width - clip.left;
163 rect.bottom = width - clip.right;
164 } else {
165 rect.top = clip.left;
166 rect.bottom = clip.right;
167 }
168 rect.Normalize();
169 return rect;
170 }
TransformTo(const CFX_AffineMatrix * pDestMatrix,int & result_left,int & result_top,FX_DWORD flags,const FX_RECT * pDestClip) const171 CFX_DIBitmap* CFX_DIBSource::TransformTo(const CFX_AffineMatrix* pDestMatrix, int& result_left, int& result_top,
172 FX_DWORD flags, const FX_RECT* pDestClip) const
173 {
174 CFX_ImageTransformer transformer;
175 transformer.Start(this, pDestMatrix, flags, pDestClip);
176 transformer.Continue(NULL);
177 result_left = transformer.m_ResultLeft;
178 result_top = transformer.m_ResultTop;
179 CFX_DIBitmap* pTransformed = transformer.m_Storer.Detach();
180 return pTransformed;
181 }
StretchTo(int dest_width,int dest_height,FX_DWORD flags,const FX_RECT * pClip) const182 CFX_DIBitmap* CFX_DIBSource::StretchTo(int dest_width, int dest_height, FX_DWORD flags, const FX_RECT* pClip) const
183 {
184 FX_RECT clip_rect(0, 0, FXSYS_abs(dest_width), FXSYS_abs(dest_height));
185 if (pClip) {
186 clip_rect.Intersect(*pClip);
187 }
188 if (clip_rect.IsEmpty()) {
189 return NULL;
190 }
191 if (dest_width == m_Width && dest_height == m_Height) {
192 return Clone(&clip_rect);
193 }
194 CFX_ImageStretcher stretcher;
195 CFX_BitmapStorer storer;
196 if (stretcher.Start(&storer, this, dest_width, dest_height, clip_rect, flags)) {
197 stretcher.Continue(NULL);
198 }
199 return storer.Detach();
200 }
CFX_ImageTransformer()201 CFX_ImageTransformer::CFX_ImageTransformer()
202 {
203 m_Status = 0;
204 m_pMatrix = NULL;
205 }
~CFX_ImageTransformer()206 CFX_ImageTransformer::~CFX_ImageTransformer()
207 {
208 }
Start(const CFX_DIBSource * pSrc,const CFX_AffineMatrix * pDestMatrix,int flags,const FX_RECT * pDestClip)209 FX_BOOL CFX_ImageTransformer::Start(const CFX_DIBSource* pSrc, const CFX_AffineMatrix* pDestMatrix, int flags, const FX_RECT* pDestClip)
210 {
211 m_pMatrix = (CFX_AffineMatrix*)pDestMatrix;
212 CFX_FloatRect unit_rect = pDestMatrix->GetUnitRect();
213 FX_RECT result_rect = unit_rect.GetClosestRect();
214 FX_RECT result_clip = result_rect;
215 if (pDestClip) {
216 result_clip.Intersect(*pDestClip);
217 }
218 if (result_clip.IsEmpty()) {
219 return FALSE;
220 }
221 m_ResultLeft = result_clip.left;
222 m_ResultTop = result_clip.top;
223 m_ResultWidth = result_clip.Width();
224 m_ResultHeight = result_clip.Height();
225 m_Flags = flags;
226 if (FXSYS_fabs(pDestMatrix->a) < FXSYS_fabs(pDestMatrix->b) / 20 &&
227 FXSYS_fabs(pDestMatrix->d) < FXSYS_fabs(pDestMatrix->c) / 20 &&
228 FXSYS_fabs(pDestMatrix->a) < 0.5f && FXSYS_fabs(pDestMatrix->d) < 0.5f) {
229 int dest_width = result_rect.Width();
230 int dest_height = result_rect.Height();
231 result_clip.Offset(-result_rect.left, -result_rect.top);
232 result_clip = _FXDIB_SwapClipBox(result_clip, dest_width, dest_height, pDestMatrix->c > 0, pDestMatrix->b < 0);
233 m_Stretcher.Start(&m_Storer, pSrc, dest_height, dest_width, result_clip, flags);
234 m_Status = 1;
235 return TRUE;
236 }
237 if (FXSYS_fabs(pDestMatrix->b) < FIX16_005 && FXSYS_fabs(pDestMatrix->c) < FIX16_005) {
238 int dest_width = pDestMatrix->a > 0 ? (int)FXSYS_ceil(pDestMatrix->a) : (int)FXSYS_floor(pDestMatrix->a);
239 int dest_height = pDestMatrix->d > 0 ? (int) - FXSYS_ceil(pDestMatrix->d) : (int) - FXSYS_floor(pDestMatrix->d);
240 result_clip.Offset(-result_rect.left, -result_rect.top);
241 m_Stretcher.Start(&m_Storer, pSrc, dest_width, dest_height, result_clip, flags);
242 m_Status = 2;
243 return TRUE;
244 }
245 int stretch_width = (int)FXSYS_ceil(FXSYS_sqrt2(pDestMatrix->a, pDestMatrix->b));
246 int stretch_height = (int)FXSYS_ceil(FXSYS_sqrt2(pDestMatrix->c, pDestMatrix->d));
247 CFX_AffineMatrix stretch2dest(1.0f, 0.0f, 0.0f, -1.0f, 0.0f, (FX_FLOAT)(stretch_height));
248 stretch2dest.Concat(pDestMatrix->a / stretch_width, pDestMatrix->b / stretch_width,
249 pDestMatrix->c / stretch_height, pDestMatrix->d / stretch_height, pDestMatrix->e, pDestMatrix->f);
250 m_dest2stretch.SetReverse(stretch2dest);
251 CFX_FloatRect clip_rect_f(result_clip);
252 clip_rect_f.Transform(&m_dest2stretch);
253 m_StretchClip = clip_rect_f.GetOutterRect();
254 m_StretchClip.Intersect(0, 0, stretch_width, stretch_height);
255 m_Stretcher.Start(&m_Storer, pSrc, stretch_width, stretch_height, m_StretchClip, flags);
256 m_Status = 3;
257 return TRUE;
258 }
_bilinear_interpol(FX_LPCBYTE buf,int row_offset_l,int row_offset_r,int src_col_l,int src_col_r,int res_x,int res_y,int bpp,int c_offset)259 FX_BYTE _bilinear_interpol(FX_LPCBYTE buf, int row_offset_l, int row_offset_r,
260 int src_col_l, int src_col_r, int res_x, int res_y,
261 int bpp, int c_offset)
262 {
263 int i_resx = 255 - res_x;
264 int col_bpp_l = src_col_l * bpp;
265 int col_bpp_r = src_col_r * bpp;
266 FX_LPCBYTE buf_u = buf + row_offset_l + c_offset;
267 FX_LPCBYTE buf_d = buf + row_offset_r + c_offset;
268 FX_LPCBYTE src_pos0 = buf_u + col_bpp_l;
269 FX_LPCBYTE src_pos1 = buf_u + col_bpp_r;
270 FX_LPCBYTE src_pos2 = buf_d + col_bpp_l;
271 FX_LPCBYTE src_pos3 = buf_d + col_bpp_r;
272 FX_BYTE r_pos_0 = (*src_pos0 * i_resx + *src_pos1 * res_x) >> 8;
273 FX_BYTE r_pos_1 = (*src_pos2 * i_resx + *src_pos3 * res_x) >> 8;
274 return (r_pos_0 * (255 - res_y) + r_pos_1 * res_y) >> 8;
275 }
_bicubic_interpol(FX_LPCBYTE buf,int pitch,int pos_pixel[],int u_w[],int v_w[],int res_x,int res_y,int bpp,int c_offset)276 FX_BYTE _bicubic_interpol(FX_LPCBYTE buf, int pitch, int pos_pixel[], int u_w[], int v_w[], int res_x, int res_y,
277 int bpp, int c_offset)
278 {
279 int s_result = 0;
280 for (int i = 0; i < 4; i ++) {
281 int a_result = 0;
282 for (int j = 0; j < 4; j ++) {
283 a_result += u_w[j] * (*(FX_BYTE*)(buf + pos_pixel[i + 4] * pitch + pos_pixel[j] * bpp + c_offset));
284 }
285 s_result += a_result * v_w[i];
286 }
287 s_result >>= 16;
288 return (FX_BYTE)(s_result < 0 ? 0 : s_result > 255 ? 255 : s_result);
289 }
_bicubic_get_pos_weight(int pos_pixel[],int u_w[],int v_w[],int src_col_l,int src_row_l,int res_x,int res_y,int stretch_width,int stretch_height)290 void _bicubic_get_pos_weight(int pos_pixel[], int u_w[], int v_w[], int src_col_l, int src_row_l,
291 int res_x, int res_y, int stretch_width, int stretch_height)
292 {
293 pos_pixel[0] = src_col_l - 1;
294 pos_pixel[1] = src_col_l;
295 pos_pixel[2] = src_col_l + 1;
296 pos_pixel[3] = src_col_l + 2;
297 pos_pixel[4] = src_row_l - 1;
298 pos_pixel[5] = src_row_l;
299 pos_pixel[6] = src_row_l + 1;
300 pos_pixel[7] = src_row_l + 2;
301 for (int i = 0 ; i < 4; i ++) {
302 if (pos_pixel[i] < 0) {
303 pos_pixel[i] = 0;
304 }
305 if (pos_pixel[i] >= stretch_width) {
306 pos_pixel[i] = stretch_width - 1;
307 }
308 if (pos_pixel[i + 4] < 0) {
309 pos_pixel[i + 4] = 0;
310 }
311 if (pos_pixel[i + 4] >= stretch_height) {
312 pos_pixel[i + 4] = stretch_height - 1;
313 }
314 }
315 u_w[0] = SDP_Table[256 + res_x];
316 u_w[1] = SDP_Table[res_x];
317 u_w[2] = SDP_Table[256 - res_x];
318 u_w[3] = SDP_Table[512 - res_x];
319 v_w[0] = SDP_Table[256 + res_y];
320 v_w[1] = SDP_Table[res_y];
321 v_w[2] = SDP_Table[256 - res_y];
322 v_w[3] = SDP_Table[512 - res_y];
323 }
_GetTransformedFormat(const CFX_DIBSource * pDrc)324 FXDIB_Format _GetTransformedFormat(const CFX_DIBSource* pDrc)
325 {
326 FXDIB_Format format = pDrc->GetFormat();
327 if (pDrc->IsAlphaMask()) {
328 format = FXDIB_8bppMask;
329 } else if (format >= 1025) {
330 format = FXDIB_Cmyka;
331 } else if (format <= 32 || format == FXDIB_Argb) {
332 format = FXDIB_Argb;
333 } else {
334 format = FXDIB_Rgba;
335 }
336 return format;
337 }
Continue(IFX_Pause * pPause)338 FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause)
339 {
340 if (m_Status == 1) {
341 if (m_Stretcher.Continue(pPause)) {
342 return TRUE;
343 }
344 if (m_Storer.GetBitmap()) {
345 m_Storer.Replace(m_Storer.GetBitmap()->SwapXY(m_pMatrix->c > 0, m_pMatrix->b < 0));
346 }
347 return FALSE;
348 } else if (m_Status == 2) {
349 return m_Stretcher.Continue(pPause);
350 } else if (m_Status != 3) {
351 return FALSE;
352 }
353 if (m_Stretcher.Continue(pPause)) {
354 return TRUE;
355 }
356 int stretch_width = m_StretchClip.Width();
357 int stretch_height = m_StretchClip.Height();
358 if (m_Storer.GetBitmap() == NULL) {
359 return FALSE;
360 }
361 FX_LPCBYTE stretch_buf = m_Storer.GetBitmap()->GetBuffer();
362 FX_LPCBYTE stretch_buf_mask = NULL;
363 if (m_Storer.GetBitmap()->m_pAlphaMask) {
364 stretch_buf_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetBuffer();
365 }
366 int stretch_pitch = m_Storer.GetBitmap()->GetPitch();
367 CFX_DIBitmap* pTransformed = new CFX_DIBitmap;
368 FXDIB_Format transformF = _GetTransformedFormat(m_Stretcher.m_pSource);
369 if (!pTransformed->Create(m_ResultWidth, m_ResultHeight, transformF)) {
370 delete pTransformed;
371 return FALSE;
372 }
373 pTransformed->Clear(0);
374 if (pTransformed->m_pAlphaMask) {
375 pTransformed->m_pAlphaMask->Clear(0);
376 }
377 CFX_AffineMatrix result2stretch(1.0f, 0.0f, 0.0f, 1.0f, (FX_FLOAT)(m_ResultLeft), (FX_FLOAT)(m_ResultTop));
378 result2stretch.Concat(m_dest2stretch);
379 result2stretch.TranslateI(-m_StretchClip.left, -m_StretchClip.top);
380 if (stretch_buf_mask == NULL && pTransformed->m_pAlphaMask) {
381 pTransformed->m_pAlphaMask->Clear(0xff000000);
382 } else if (pTransformed->m_pAlphaMask) {
383 int stretch_pitch_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetPitch();
384 if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
385 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
386 for (int row = 0; row < m_ResultHeight; row ++) {
387 FX_BYTE* dest_pos_mask = (FX_BYTE*)pTransformed->m_pAlphaMask->GetScanline(row);
388 for (int col = 0; col < m_ResultWidth; col ++) {
389 int src_col_l, src_row_l, res_x, res_y;
390 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
391 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
392 if (src_col_l == stretch_width) {
393 src_col_l--;
394 }
395 if (src_row_l == stretch_height) {
396 src_row_l--;
397 }
398 int src_col_r = src_col_l + 1;
399 int src_row_r = src_row_l + 1;
400 if (src_col_r == stretch_width) {
401 src_col_r--;
402 }
403 if (src_row_r == stretch_height) {
404 src_row_r--;
405 }
406 int row_offset_l = src_row_l * stretch_pitch_mask;
407 int row_offset_r = src_row_r * stretch_pitch_mask;
408 *dest_pos_mask = _bilinear_interpol(stretch_buf_mask, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, 1, 0);
409 }
410 dest_pos_mask++;
411 }
412 }
413 } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
414 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
415 for (int row = 0; row < m_ResultHeight; row ++) {
416 FX_BYTE* dest_pos_mask = (FX_BYTE*)pTransformed->m_pAlphaMask->GetScanline(row);
417 for (int col = 0; col < m_ResultWidth; col ++) {
418 int src_col_l, src_row_l, res_x, res_y;
419 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
420 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
421 int pos_pixel[8];
422 int u_w[4], v_w[4];
423 if (src_col_l == stretch_width) {
424 src_col_l--;
425 }
426 if (src_row_l == stretch_height) {
427 src_row_l--;
428 }
429 _bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, res_x, res_y, stretch_width, stretch_height);
430 *dest_pos_mask = _bicubic_interpol(stretch_buf_mask, stretch_pitch_mask, pos_pixel, u_w, v_w, res_x, res_y, 1, 0);
431 }
432 dest_pos_mask++;
433 }
434 }
435 } else {
436 CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
437 for (int row = 0; row < m_ResultHeight; row ++) {
438 FX_BYTE* dest_pos_mask = (FX_BYTE*)pTransformed->m_pAlphaMask->GetScanline(row);
439 for (int col = 0; col < m_ResultWidth; col ++) {
440 int src_col, src_row;
441 result2stretch_fix.Transform(col, row, src_col, src_row);
442 if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && src_row <= stretch_height) {
443 if (src_col == stretch_width) {
444 src_col --;
445 }
446 if (src_row == stretch_height) {
447 src_row --;
448 }
449 *dest_pos_mask = stretch_buf_mask[src_row * stretch_pitch_mask + src_col];
450 }
451 dest_pos_mask++;
452 }
453 }
454 }
455 }
456 if (m_Storer.GetBitmap()->IsAlphaMask()) {
457 if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
458 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
459 for (int row = 0; row < m_ResultHeight; row ++) {
460 FX_LPBYTE dest_scan = (FX_LPBYTE)pTransformed->GetScanline(row);
461 for (int col = 0; col < m_ResultWidth; col ++) {
462 int src_col_l, src_row_l, res_x, res_y;
463 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
464 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
465 if (src_col_l == stretch_width) {
466 src_col_l--;
467 }
468 if (src_row_l == stretch_height) {
469 src_row_l--;
470 }
471 int src_col_r = src_col_l + 1;
472 int src_row_r = src_row_l + 1;
473 if (src_col_r == stretch_width) {
474 src_col_r--;
475 }
476 if (src_row_r == stretch_height) {
477 src_row_r--;
478 }
479 int row_offset_l = src_row_l * stretch_pitch;
480 int row_offset_r = src_row_r * stretch_pitch;
481 *dest_scan = _bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, 1, 0);
482 }
483 dest_scan ++;
484 }
485 }
486 } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
487 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
488 for (int row = 0; row < m_ResultHeight; row ++) {
489 FX_LPBYTE dest_scan = (FX_LPBYTE)pTransformed->GetScanline(row);
490 for (int col = 0; col < m_ResultWidth; col ++) {
491 int src_col_l, src_row_l, res_x, res_y;
492 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
493 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
494 int pos_pixel[8];
495 int u_w[4], v_w[4];
496 if (src_col_l == stretch_width) {
497 src_col_l--;
498 }
499 if (src_row_l == stretch_height) {
500 src_row_l--;
501 }
502 _bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, res_x, res_y, stretch_width, stretch_height);
503 *dest_scan = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, 1, 0);
504 }
505 dest_scan ++;
506 }
507 }
508 } else {
509 CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
510 for (int row = 0; row < m_ResultHeight; row ++) {
511 FX_LPBYTE dest_scan = (FX_LPBYTE)pTransformed->GetScanline(row);
512 for (int col = 0; col < m_ResultWidth; col ++) {
513 int src_col, src_row;
514 result2stretch_fix.Transform(col, row, src_col, src_row);
515 if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && src_row <= stretch_height) {
516 if (src_col == stretch_width) {
517 src_col --;
518 }
519 if (src_row == stretch_height) {
520 src_row --;
521 }
522 FX_LPCBYTE src_pixel = stretch_buf + stretch_pitch * src_row + src_col;
523 *dest_scan = *src_pixel;
524 }
525 dest_scan ++;
526 }
527 }
528 }
529 } else {
530 int Bpp = m_Storer.GetBitmap()->GetBPP() / 8;
531 int destBpp = pTransformed->GetBPP() / 8;
532 if (Bpp == 1) {
533 FX_DWORD argb[256];
534 FX_ARGB* pPal = m_Storer.GetBitmap()->GetPalette();
535 if (pPal) {
536 for (int i = 0; i < 256; i ++) {
537 argb[i] = pPal[i];
538 }
539 } else {
540 if (m_Storer.GetBitmap()->IsCmykImage())
541 for (int i = 0; i < 256; i ++) {
542 argb[i] = 255 - i;
543 }
544 else
545 for (int i = 0; i < 256; i ++) {
546 argb[i] = 0xff000000 | (i * 0x010101);
547 }
548 }
549 if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
550 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
551 for (int row = 0; row < m_ResultHeight; row ++) {
552 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
553 for (int col = 0; col < m_ResultWidth; col ++) {
554 int src_col_l, src_row_l, res_x, res_y;
555 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
556 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
557 if (src_col_l == stretch_width) {
558 src_col_l--;
559 }
560 if (src_row_l == stretch_height) {
561 src_row_l--;
562 }
563 int src_col_r = src_col_l + 1;
564 int src_row_r = src_row_l + 1;
565 if (src_col_r == stretch_width) {
566 src_col_r--;
567 }
568 if (src_row_r == stretch_height) {
569 src_row_r--;
570 }
571 int row_offset_l = src_row_l * stretch_pitch;
572 int row_offset_r = src_row_r * stretch_pitch;
573 FX_DWORD r_bgra_cmyk = argb[_bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, 1, 0)];
574 if (transformF == FXDIB_Rgba) {
575 dest_pos[0] = (FX_BYTE)(r_bgra_cmyk >> 24);
576 dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
577 dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
578 } else {
579 *(FX_DWORD*)dest_pos = r_bgra_cmyk;
580 }
581 }
582 dest_pos += destBpp;
583 }
584 }
585 } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
586 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
587 for (int row = 0; row < m_ResultHeight; row ++) {
588 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
589 for (int col = 0; col < m_ResultWidth; col ++) {
590 int src_col_l, src_row_l, res_x, res_y;
591 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
592 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
593 int pos_pixel[8];
594 int u_w[4], v_w[4];
595 if (src_col_l == stretch_width) {
596 src_col_l--;
597 }
598 if (src_row_l == stretch_height) {
599 src_row_l--;
600 }
601 _bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, res_x, res_y, stretch_width, stretch_height);
602 FX_DWORD r_bgra_cmyk = argb[_bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, 1, 0)];
603 if (transformF == FXDIB_Rgba) {
604 dest_pos[0] = (FX_BYTE)(r_bgra_cmyk >> 24);
605 dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
606 dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
607 } else {
608 *(FX_DWORD*)dest_pos = r_bgra_cmyk;
609 }
610 }
611 dest_pos += destBpp;
612 }
613 }
614 } else {
615 CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
616 for (int row = 0; row < m_ResultHeight; row ++) {
617 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
618 for (int col = 0; col < m_ResultWidth; col ++) {
619 int src_col, src_row;
620 result2stretch_fix.Transform(col, row, src_col, src_row);
621 if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && src_row <= stretch_height) {
622 if (src_col == stretch_width) {
623 src_col --;
624 }
625 if (src_row == stretch_height) {
626 src_row --;
627 }
628 FX_DWORD r_bgra_cmyk = argb[stretch_buf[src_row * stretch_pitch + src_col]];
629 if (transformF == FXDIB_Rgba) {
630 dest_pos[0] = (FX_BYTE)(r_bgra_cmyk >> 24);
631 dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
632 dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
633 } else {
634 *(FX_DWORD*)dest_pos = r_bgra_cmyk;
635 }
636 }
637 dest_pos += destBpp;
638 }
639 }
640 }
641 } else {
642 FX_BOOL bHasAlpha = m_Storer.GetBitmap()->HasAlpha();
643 int destBpp = pTransformed->GetBPP() / 8;
644 if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
645 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
646 for (int row = 0; row < m_ResultHeight; row ++) {
647 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
648 for (int col = 0; col < m_ResultWidth; col ++) {
649 int src_col_l, src_row_l, res_x, res_y, r_pos_k_r = 0;
650 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
651 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
652 if (src_col_l == stretch_width) {
653 src_col_l--;
654 }
655 if (src_row_l == stretch_height) {
656 src_row_l--;
657 }
658 int src_col_r = src_col_l + 1;
659 int src_row_r = src_row_l + 1;
660 if (src_col_r == stretch_width) {
661 src_col_r--;
662 }
663 if (src_row_r == stretch_height) {
664 src_row_r--;
665 }
666 int row_offset_l = src_row_l * stretch_pitch;
667 int row_offset_r = src_row_r * stretch_pitch;
668 FX_BYTE r_pos_red_y_r = _bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, Bpp, 2);
669 FX_BYTE r_pos_green_m_r = _bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, Bpp, 1);
670 FX_BYTE r_pos_blue_c_r = _bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, Bpp, 0);
671 if (bHasAlpha) {
672 if (transformF != FXDIB_Argb) {
673 if (transformF == FXDIB_Rgba) {
674 dest_pos[0] = r_pos_blue_c_r;
675 dest_pos[1] = r_pos_green_m_r;
676 dest_pos[2] = r_pos_red_y_r;
677 } else {
678 r_pos_k_r = _bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, Bpp, 3);
679 *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(r_pos_blue_c_r, r_pos_green_m_r, r_pos_red_y_r, r_pos_k_r));
680 }
681 } else {
682 FX_BYTE r_pos_a_r = _bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, Bpp, 3);
683 *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(r_pos_a_r, r_pos_red_y_r, r_pos_green_m_r, r_pos_blue_c_r));
684 }
685 } else {
686 r_pos_k_r = 0xff;
687 if (transformF == FXDIB_Cmyka) {
688 r_pos_k_r = _bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, Bpp, 3);
689 *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(r_pos_blue_c_r, r_pos_green_m_r, r_pos_red_y_r, r_pos_k_r));
690 } else {
691 *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(r_pos_k_r, r_pos_red_y_r, r_pos_green_m_r, r_pos_blue_c_r));
692 }
693 }
694 }
695 dest_pos += destBpp;
696 }
697 }
698 } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
699 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
700 for (int row = 0; row < m_ResultHeight; row ++) {
701 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
702 for (int col = 0; col < m_ResultWidth; col ++) {
703 int src_col_l, src_row_l, res_x, res_y, r_pos_k_r = 0;
704 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
705 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
706 int pos_pixel[8];
707 int u_w[4], v_w[4];
708 if (src_col_l == stretch_width) {
709 src_col_l--;
710 }
711 if (src_row_l == stretch_height) {
712 src_row_l--;
713 }
714 _bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, res_x, res_y, stretch_width, stretch_height);
715 FX_BYTE r_pos_red_y_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 2);
716 FX_BYTE r_pos_green_m_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 1);
717 FX_BYTE r_pos_blue_c_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 0);
718 if (bHasAlpha) {
719 if (transformF != FXDIB_Argb) {
720 if (transformF == FXDIB_Rgba) {
721 dest_pos[0] = r_pos_blue_c_r;
722 dest_pos[1] = r_pos_green_m_r;
723 dest_pos[2] = r_pos_red_y_r;
724 } else {
725 r_pos_k_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 3);
726 *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(r_pos_blue_c_r, r_pos_green_m_r, r_pos_red_y_r, r_pos_k_r));
727 }
728 } else {
729 FX_BYTE r_pos_a_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 3);
730 *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(r_pos_a_r, r_pos_red_y_r, r_pos_green_m_r, r_pos_blue_c_r));
731 }
732 } else {
733 r_pos_k_r = 0xff;
734 if (transformF == FXDIB_Cmyka) {
735 r_pos_k_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 3);
736 *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(r_pos_blue_c_r, r_pos_green_m_r, r_pos_red_y_r, r_pos_k_r));
737 } else {
738 *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(r_pos_k_r, r_pos_red_y_r, r_pos_green_m_r, r_pos_blue_c_r));
739 }
740 }
741 }
742 dest_pos += destBpp;
743 }
744 }
745 } else {
746 CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
747 for (int row = 0; row < m_ResultHeight; row ++) {
748 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
749 for (int col = 0; col < m_ResultWidth; col ++) {
750 int src_col, src_row;
751 result2stretch_fix.Transform(col, row, src_col, src_row);
752 if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && src_row <= stretch_height) {
753 if (src_col == stretch_width) {
754 src_col --;
755 }
756 if (src_row == stretch_height) {
757 src_row --;
758 }
759 FX_LPCBYTE src_pos = stretch_buf + src_row * stretch_pitch + src_col * Bpp;
760 if (bHasAlpha) {
761 if (transformF != FXDIB_Argb) {
762 if (transformF == FXDIB_Rgba) {
763 dest_pos[0] = src_pos[0];
764 dest_pos[1] = src_pos[1];
765 dest_pos[2] = src_pos[2];
766 } else {
767 *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(src_pos[0], src_pos[1], src_pos[2], src_pos[3]));
768 }
769 } else {
770 *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(src_pos[3], src_pos[2], src_pos[1], src_pos[0]));
771 }
772 } else {
773 if (transformF == FXDIB_Cmyka) {
774 *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(src_pos[0], src_pos[1], src_pos[2], src_pos[3]));
775 } else {
776 *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(0xff, src_pos[2], src_pos[1], src_pos[0]));
777 }
778 }
779 }
780 dest_pos += destBpp;
781 }
782 }
783 }
784 }
785 }
786 m_Storer.Replace(pTransformed);
787 return FALSE;
788 }
789