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 = FX_NEW CFX_DIBitmap;
67 if (!pTransBitmap) {
68 return NULL;
69 }
70 int result_height = dest_clip.Height(), result_width = dest_clip.Width();
71 if (!pTransBitmap->Create(result_width, result_height, GetFormat())) {
72 delete pTransBitmap;
73 return NULL;
74 }
75 pTransBitmap->CopyPalette(m_pPalette);
76 int src_pitch = m_Pitch;
77 int dest_pitch = pTransBitmap->GetPitch();
78 FX_LPBYTE dest_buf = pTransBitmap->GetBuffer();
79 int row_start = bXFlip ? m_Height - dest_clip.right : dest_clip.left;
80 int row_end = bXFlip ? m_Height - dest_clip.left : dest_clip.right;
81 int col_start = bYFlip ? m_Width - dest_clip.bottom : dest_clip.top;
82 int col_end = bYFlip ? m_Width - dest_clip.top : dest_clip.bottom;
83 if (GetBPP() == 1) {
84 FXSYS_memset8(dest_buf, 0xff, dest_pitch * result_height);
85 for (int row = row_start; row < row_end; row ++) {
86 FX_LPCBYTE src_scan = GetScanline(row);
87 int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - dest_clip.left;
88 FX_LPBYTE dest_scan = dest_buf;
89 if (bYFlip) {
90 dest_scan += (result_height - 1) * dest_pitch;
91 }
92 int dest_step = bYFlip ? -dest_pitch : dest_pitch;
93 for (int col = col_start; col < col_end; col ++) {
94 if (!(src_scan[col / 8] & (1 << (7 - col % 8)))) {
95 dest_scan[dest_col / 8] &= ~(1 << (7 - dest_col % 8));
96 }
97 dest_scan += dest_step;
98 }
99 }
100 } else {
101 int nBytes = GetBPP() / 8;
102 int dest_step = bYFlip ? -dest_pitch : dest_pitch;
103 if (nBytes == 3) {
104 dest_step -= 2;
105 }
106 for (int row = row_start; row < row_end; row ++) {
107 int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - dest_clip.left;
108 FX_LPBYTE dest_scan = dest_buf + dest_col * nBytes;
109 if (bYFlip) {
110 dest_scan += (result_height - 1) * dest_pitch;
111 }
112 if (nBytes == 4) {
113 FX_DWORD* src_scan = (FX_DWORD*)GetScanline(row) + col_start;
114 for (int col = col_start; col < col_end; col ++) {
115 *(FX_DWORD*)dest_scan = *src_scan++;
116 dest_scan += dest_step;
117 }
118 } else {
119 FX_LPCBYTE src_scan = GetScanline(row) + col_start * nBytes;
120 if (nBytes == 1)
121 for (int col = col_start; col < col_end; col ++) {
122 *dest_scan = *src_scan++;
123 dest_scan += dest_step;
124 }
125 else
126 for (int col = col_start; col < col_end; col ++) {
127 *dest_scan++ = *src_scan++;
128 *dest_scan++ = *src_scan++;
129 *dest_scan = *src_scan++;
130 dest_scan += dest_step;
131 }
132 }
133 }
134 }
135 if (m_pAlphaMask) {
136 src_pitch = m_pAlphaMask->m_Pitch;
137 dest_pitch = pTransBitmap->m_pAlphaMask->GetPitch();
138 dest_buf = pTransBitmap->m_pAlphaMask->GetBuffer();
139 int dest_step = bYFlip ? -dest_pitch : dest_pitch;
140 for (int row = row_start; row < row_end; row ++) {
141 int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - dest_clip.left;
142 FX_LPBYTE dest_scan = dest_buf + dest_col;
143 if (bYFlip) {
144 dest_scan += (result_height - 1) * dest_pitch;
145 }
146 FX_LPCBYTE src_scan = m_pAlphaMask->GetScanline(row) + col_start;
147 for (int col = col_start; col < col_end; col ++) {
148 *dest_scan = *src_scan++;
149 dest_scan += dest_step;
150 }
151 }
152 }
153 return pTransBitmap;
154 }
155 #define FIX16_005 0.05f
_FXDIB_SwapClipBox(FX_RECT & clip,int width,int height,FX_BOOL bFlipX,FX_BOOL bFlipY)156 FX_RECT _FXDIB_SwapClipBox(FX_RECT& clip, int width, int height, FX_BOOL bFlipX, FX_BOOL bFlipY)
157 {
158 FX_RECT rect;
159 if (bFlipY) {
160 rect.left = height - clip.top;
161 rect.right = height - clip.bottom;
162 } else {
163 rect.left = clip.top;
164 rect.right = clip.bottom;
165 }
166 if (bFlipX) {
167 rect.top = width - clip.left;
168 rect.bottom = width - clip.right;
169 } else {
170 rect.top = clip.left;
171 rect.bottom = clip.right;
172 }
173 rect.Normalize();
174 return rect;
175 }
TransformTo(const CFX_AffineMatrix * pDestMatrix,int & result_left,int & result_top,FX_DWORD flags,const FX_RECT * pDestClip) const176 CFX_DIBitmap* CFX_DIBSource::TransformTo(const CFX_AffineMatrix* pDestMatrix, int& result_left, int& result_top,
177 FX_DWORD flags, const FX_RECT* pDestClip) const
178 {
179 CFX_ImageTransformer transformer;
180 transformer.Start(this, pDestMatrix, flags, pDestClip);
181 transformer.Continue(NULL);
182 result_left = transformer.m_ResultLeft;
183 result_top = transformer.m_ResultTop;
184 CFX_DIBitmap* pTransformed = transformer.m_Storer.Detach();
185 return pTransformed;
186 }
StretchTo(int dest_width,int dest_height,FX_DWORD flags,const FX_RECT * pClip) const187 CFX_DIBitmap* CFX_DIBSource::StretchTo(int dest_width, int dest_height, FX_DWORD flags, const FX_RECT* pClip) const
188 {
189 FX_RECT clip_rect(0, 0, FXSYS_abs(dest_width), FXSYS_abs(dest_height));
190 if (pClip) {
191 clip_rect.Intersect(*pClip);
192 }
193 if (clip_rect.IsEmpty()) {
194 return NULL;
195 }
196 if (dest_width == m_Width && dest_height == m_Height) {
197 return Clone(&clip_rect);
198 }
199 CFX_ImageStretcher stretcher;
200 CFX_BitmapStorer storer;
201 if (stretcher.Start(&storer, this, dest_width, dest_height, clip_rect, flags)) {
202 stretcher.Continue(NULL);
203 }
204 return storer.Detach();
205 }
CFX_ImageTransformer()206 CFX_ImageTransformer::CFX_ImageTransformer()
207 {
208 m_Status = 0;
209 m_pMatrix = NULL;
210 }
~CFX_ImageTransformer()211 CFX_ImageTransformer::~CFX_ImageTransformer()
212 {
213 }
Start(const CFX_DIBSource * pSrc,const CFX_AffineMatrix * pDestMatrix,int flags,const FX_RECT * pDestClip)214 FX_BOOL CFX_ImageTransformer::Start(const CFX_DIBSource* pSrc, const CFX_AffineMatrix* pDestMatrix, int flags, const FX_RECT* pDestClip)
215 {
216 m_pMatrix = (CFX_AffineMatrix*)pDestMatrix;
217 CFX_FloatRect unit_rect = pDestMatrix->GetUnitRect();
218 FX_RECT result_rect = unit_rect.GetClosestRect();
219 FX_RECT result_clip = result_rect;
220 if (pDestClip) {
221 result_clip.Intersect(*pDestClip);
222 }
223 if (result_clip.IsEmpty()) {
224 return FALSE;
225 }
226 m_ResultLeft = result_clip.left;
227 m_ResultTop = result_clip.top;
228 m_ResultWidth = result_clip.Width();
229 m_ResultHeight = result_clip.Height();
230 m_Flags = flags;
231 if (FXSYS_fabs(pDestMatrix->a) < FXSYS_fabs(pDestMatrix->b) / 20 &&
232 FXSYS_fabs(pDestMatrix->d) < FXSYS_fabs(pDestMatrix->c) / 20 &&
233 FXSYS_fabs(pDestMatrix->a) < 0.5f && FXSYS_fabs(pDestMatrix->d) < 0.5f) {
234 int dest_width = result_rect.Width();
235 int dest_height = result_rect.Height();
236 result_clip.Offset(-result_rect.left, -result_rect.top);
237 result_clip = _FXDIB_SwapClipBox(result_clip, dest_width, dest_height, pDestMatrix->c > 0, pDestMatrix->b < 0);
238 m_Stretcher.Start(&m_Storer, pSrc, dest_height, dest_width, result_clip, flags);
239 m_Status = 1;
240 return TRUE;
241 }
242 if (FXSYS_fabs(pDestMatrix->b) < FIX16_005 && FXSYS_fabs(pDestMatrix->c) < FIX16_005) {
243 int dest_width = pDestMatrix->a > 0 ? (int)FXSYS_ceil(pDestMatrix->a) : (int)FXSYS_floor(pDestMatrix->a);
244 int dest_height = pDestMatrix->d > 0 ? (int) - FXSYS_ceil(pDestMatrix->d) : (int) - FXSYS_floor(pDestMatrix->d);
245 result_clip.Offset(-result_rect.left, -result_rect.top);
246 m_Stretcher.Start(&m_Storer, pSrc, dest_width, dest_height, result_clip, flags);
247 m_Status = 2;
248 return TRUE;
249 }
250 int stretch_width = (int)FXSYS_ceil(FXSYS_sqrt2(pDestMatrix->a, pDestMatrix->b));
251 int stretch_height = (int)FXSYS_ceil(FXSYS_sqrt2(pDestMatrix->c, pDestMatrix->d));
252 CFX_AffineMatrix stretch2dest(1.0f, 0.0f, 0.0f, -1.0f, 0.0f, (FX_FLOAT)(stretch_height));
253 stretch2dest.Concat(pDestMatrix->a / stretch_width, pDestMatrix->b / stretch_width,
254 pDestMatrix->c / stretch_height, pDestMatrix->d / stretch_height, pDestMatrix->e, pDestMatrix->f);
255 m_dest2stretch.SetReverse(stretch2dest);
256 CFX_FloatRect clip_rect_f(result_clip);
257 clip_rect_f.Transform(&m_dest2stretch);
258 m_StretchClip = clip_rect_f.GetOutterRect();
259 m_StretchClip.Intersect(0, 0, stretch_width, stretch_height);
260 m_Stretcher.Start(&m_Storer, pSrc, stretch_width, stretch_height, m_StretchClip, flags);
261 m_Status = 3;
262 return TRUE;
263 }
_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)264 FX_BYTE _bilinear_interpol(FX_LPCBYTE buf, int row_offset_l, int row_offset_r,
265 int src_col_l, int src_col_r, int res_x, int res_y,
266 int bpp, int c_offset)
267 {
268 int i_resx = 255 - res_x;
269 int col_bpp_l = src_col_l * bpp;
270 int col_bpp_r = src_col_r * bpp;
271 FX_LPCBYTE buf_u = buf + row_offset_l + c_offset;
272 FX_LPCBYTE buf_d = buf + row_offset_r + c_offset;
273 FX_LPCBYTE src_pos0 = buf_u + col_bpp_l;
274 FX_LPCBYTE src_pos1 = buf_u + col_bpp_r;
275 FX_LPCBYTE src_pos2 = buf_d + col_bpp_l;
276 FX_LPCBYTE src_pos3 = buf_d + col_bpp_r;
277 FX_BYTE r_pos_0 = (*src_pos0 * i_resx + *src_pos1 * res_x) >> 8;
278 FX_BYTE r_pos_1 = (*src_pos2 * i_resx + *src_pos3 * res_x) >> 8;
279 return (r_pos_0 * (255 - res_y) + r_pos_1 * res_y) >> 8;
280 }
_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)281 FX_BYTE _bicubic_interpol(FX_LPCBYTE buf, int pitch, int pos_pixel[], int u_w[], int v_w[], int res_x, int res_y,
282 int bpp, int c_offset)
283 {
284 int s_result = 0;
285 for (int i = 0; i < 4; i ++) {
286 int a_result = 0;
287 for (int j = 0; j < 4; j ++) {
288 a_result += u_w[j] * (*(FX_BYTE*)(buf + pos_pixel[i + 4] * pitch + pos_pixel[j] * bpp + c_offset));
289 }
290 s_result += a_result * v_w[i];
291 }
292 s_result >>= 16;
293 return (FX_BYTE)(s_result < 0 ? 0 : s_result > 255 ? 255 : s_result);
294 }
_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)295 void _bicubic_get_pos_weight(int pos_pixel[], int u_w[], int v_w[], int src_col_l, int src_row_l,
296 int res_x, int res_y, int stretch_width, int stretch_height)
297 {
298 pos_pixel[0] = src_col_l - 1;
299 pos_pixel[1] = src_col_l;
300 pos_pixel[2] = src_col_l + 1;
301 pos_pixel[3] = src_col_l + 2;
302 pos_pixel[4] = src_row_l - 1;
303 pos_pixel[5] = src_row_l;
304 pos_pixel[6] = src_row_l + 1;
305 pos_pixel[7] = src_row_l + 2;
306 for (int i = 0 ; i < 4; i ++) {
307 if (pos_pixel[i] < 0) {
308 pos_pixel[i] = 0;
309 }
310 if (pos_pixel[i] >= stretch_width) {
311 pos_pixel[i] = stretch_width - 1;
312 }
313 if (pos_pixel[i + 4] < 0) {
314 pos_pixel[i + 4] = 0;
315 }
316 if (pos_pixel[i + 4] >= stretch_height) {
317 pos_pixel[i + 4] = stretch_height - 1;
318 }
319 }
320 u_w[0] = SDP_Table[256 + res_x];
321 u_w[1] = SDP_Table[res_x];
322 u_w[2] = SDP_Table[256 - res_x];
323 u_w[3] = SDP_Table[512 - res_x];
324 v_w[0] = SDP_Table[256 + res_y];
325 v_w[1] = SDP_Table[res_y];
326 v_w[2] = SDP_Table[256 - res_y];
327 v_w[3] = SDP_Table[512 - res_y];
328 }
_GetTransformedFormat(const CFX_DIBSource * pDrc)329 FXDIB_Format _GetTransformedFormat(const CFX_DIBSource* pDrc)
330 {
331 FXDIB_Format format = pDrc->GetFormat();
332 if (pDrc->IsAlphaMask()) {
333 format = FXDIB_8bppMask;
334 } else if (format >= 1025) {
335 format = FXDIB_Cmyka;
336 } else if (format <= 32 || format == FXDIB_Argb) {
337 format = FXDIB_Argb;
338 } else {
339 format = FXDIB_Rgba;
340 }
341 return format;
342 }
Continue(IFX_Pause * pPause)343 FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause)
344 {
345 if (m_Status == 1) {
346 if (m_Stretcher.Continue(pPause)) {
347 return TRUE;
348 }
349 if (m_Storer.GetBitmap()) {
350 m_Storer.Replace(m_Storer.GetBitmap()->SwapXY(m_pMatrix->c > 0, m_pMatrix->b < 0));
351 }
352 return FALSE;
353 } else if (m_Status == 2) {
354 return m_Stretcher.Continue(pPause);
355 } else if (m_Status != 3) {
356 return FALSE;
357 }
358 if (m_Stretcher.Continue(pPause)) {
359 return TRUE;
360 }
361 int stretch_width = m_StretchClip.Width();
362 int stretch_height = m_StretchClip.Height();
363 if (m_Storer.GetBitmap() == NULL) {
364 return FALSE;
365 }
366 FX_LPCBYTE stretch_buf = m_Storer.GetBitmap()->GetBuffer();
367 FX_LPCBYTE stretch_buf_mask = NULL;
368 if (m_Storer.GetBitmap()->m_pAlphaMask) {
369 stretch_buf_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetBuffer();
370 }
371 int stretch_pitch = m_Storer.GetBitmap()->GetPitch();
372 CFX_DIBitmap* pTransformed = FX_NEW CFX_DIBitmap;
373 if (!pTransformed) {
374 return FALSE;
375 }
376 FXDIB_Format transformF = _GetTransformedFormat(m_Stretcher.m_pSource);
377 if (!pTransformed->Create(m_ResultWidth, m_ResultHeight, transformF)) {
378 delete pTransformed;
379 return FALSE;
380 }
381 pTransformed->Clear(0);
382 if (pTransformed->m_pAlphaMask) {
383 pTransformed->m_pAlphaMask->Clear(0);
384 }
385 CFX_AffineMatrix result2stretch(1.0f, 0.0f, 0.0f, 1.0f, (FX_FLOAT)(m_ResultLeft), (FX_FLOAT)(m_ResultTop));
386 result2stretch.Concat(m_dest2stretch);
387 result2stretch.TranslateI(-m_StretchClip.left, -m_StretchClip.top);
388 if (stretch_buf_mask == NULL && pTransformed->m_pAlphaMask) {
389 pTransformed->m_pAlphaMask->Clear(0xff000000);
390 } else if (pTransformed->m_pAlphaMask) {
391 int stretch_pitch_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetPitch();
392 if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
393 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
394 for (int row = 0; row < m_ResultHeight; row ++) {
395 FX_BYTE* dest_pos_mask = (FX_BYTE*)pTransformed->m_pAlphaMask->GetScanline(row);
396 for (int col = 0; col < m_ResultWidth; col ++) {
397 int src_col_l, src_row_l, res_x, res_y;
398 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
399 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
400 if (src_col_l == stretch_width) {
401 src_col_l--;
402 }
403 if (src_row_l == stretch_height) {
404 src_row_l--;
405 }
406 int src_col_r = src_col_l + 1;
407 int src_row_r = src_row_l + 1;
408 if (src_col_r == stretch_width) {
409 src_col_r--;
410 }
411 if (src_row_r == stretch_height) {
412 src_row_r--;
413 }
414 int row_offset_l = src_row_l * stretch_pitch_mask;
415 int row_offset_r = src_row_r * stretch_pitch_mask;
416 *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);
417 }
418 dest_pos_mask++;
419 }
420 }
421 } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
422 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
423 int pos_pixel[8];
424 for (int row = 0; row < m_ResultHeight; row ++) {
425 FX_BYTE* dest_pos_mask = (FX_BYTE*)pTransformed->m_pAlphaMask->GetScanline(row);
426 for (int col = 0; col < m_ResultWidth; col ++) {
427 int src_col_l, src_row_l, res_x, res_y;
428 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
429 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
430 int u_w[4], v_w[4];
431 if (src_col_l == stretch_width) {
432 src_col_l--;
433 }
434 if (src_row_l == stretch_height) {
435 src_row_l--;
436 }
437 _bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, res_x, res_y, stretch_width, stretch_height);
438 *dest_pos_mask = _bicubic_interpol(stretch_buf_mask, stretch_pitch_mask, pos_pixel, u_w, v_w, res_x, res_y, 1, 0);
439 }
440 dest_pos_mask++;
441 }
442 }
443 } else {
444 CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
445 for (int row = 0; row < m_ResultHeight; row ++) {
446 FX_BYTE* dest_pos_mask = (FX_BYTE*)pTransformed->m_pAlphaMask->GetScanline(row);
447 for (int col = 0; col < m_ResultWidth; col ++) {
448 int src_col, src_row;
449 result2stretch_fix.Transform(col, row, src_col, src_row);
450 if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && src_row <= stretch_height) {
451 if (src_col == stretch_width) {
452 src_col --;
453 }
454 if (src_row == stretch_height) {
455 src_row --;
456 }
457 *dest_pos_mask = stretch_buf_mask[src_row * stretch_pitch_mask + src_col];
458 }
459 dest_pos_mask++;
460 }
461 }
462 }
463 }
464 if (m_Storer.GetBitmap()->IsAlphaMask()) {
465 if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
466 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
467 for (int row = 0; row < m_ResultHeight; row ++) {
468 FX_LPBYTE dest_scan = (FX_LPBYTE)pTransformed->GetScanline(row);
469 for (int col = 0; col < m_ResultWidth; col ++) {
470 int src_col_l, src_row_l, res_x, res_y;
471 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
472 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
473 if (src_col_l == stretch_width) {
474 src_col_l--;
475 }
476 if (src_row_l == stretch_height) {
477 src_row_l--;
478 }
479 int src_col_r = src_col_l + 1;
480 int src_row_r = src_row_l + 1;
481 if (src_col_r == stretch_width) {
482 src_col_r--;
483 }
484 if (src_row_r == stretch_height) {
485 src_row_r--;
486 }
487 int row_offset_l = src_row_l * stretch_pitch;
488 int row_offset_r = src_row_r * stretch_pitch;
489 *dest_scan = _bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, src_col_l, src_col_r, res_x, res_y, 1, 0);
490 }
491 dest_scan ++;
492 }
493 }
494 } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
495 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
496 int pos_pixel[8];
497 for (int row = 0; row < m_ResultHeight; row ++) {
498 FX_LPBYTE dest_scan = (FX_LPBYTE)pTransformed->GetScanline(row);
499 for (int col = 0; col < m_ResultWidth; col ++) {
500 int src_col_l, src_row_l, res_x, res_y;
501 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
502 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
503 int u_w[4], v_w[4];
504 if (src_col_l == stretch_width) {
505 src_col_l--;
506 }
507 if (src_row_l == stretch_height) {
508 src_row_l--;
509 }
510 _bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, res_x, res_y, stretch_width, stretch_height);
511 *dest_scan = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, 1, 0);
512 }
513 dest_scan ++;
514 }
515 }
516 } else {
517 CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
518 for (int row = 0; row < m_ResultHeight; row ++) {
519 FX_LPBYTE dest_scan = (FX_LPBYTE)pTransformed->GetScanline(row);
520 for (int col = 0; col < m_ResultWidth; col ++) {
521 int src_col, src_row;
522 result2stretch_fix.Transform(col, row, src_col, src_row);
523 if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && src_row <= stretch_height) {
524 if (src_col == stretch_width) {
525 src_col --;
526 }
527 if (src_row == stretch_height) {
528 src_row --;
529 }
530 FX_LPCBYTE src_pixel = stretch_buf + stretch_pitch * src_row + src_col;
531 *dest_scan = *src_pixel;
532 }
533 dest_scan ++;
534 }
535 }
536 }
537 } else {
538 int Bpp = m_Storer.GetBitmap()->GetBPP() / 8;
539 int destBpp = pTransformed->GetBPP() / 8;
540 if (Bpp == 1) {
541 FX_BOOL bHasAlpha = m_Storer.GetBitmap()->HasAlpha();
542 FX_DWORD argb[256];
543 FX_ARGB* pPal = m_Storer.GetBitmap()->GetPalette();
544 if (pPal) {
545 for (int i = 0; i < 256; i ++) {
546 argb[i] = pPal[i];
547 }
548 } else {
549 if (m_Storer.GetBitmap()->IsCmykImage())
550 for (int i = 0; i < 256; i ++) {
551 argb[i] = 255 - i;
552 }
553 else
554 for (int i = 0; i < 256; i ++) {
555 argb[i] = 0xff000000 | (i * 0x010101);
556 }
557 }
558 if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
559 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
560 for (int row = 0; row < m_ResultHeight; row ++) {
561 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
562 for (int col = 0; col < m_ResultWidth; col ++) {
563 int src_col_l, src_row_l, res_x, res_y;
564 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
565 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
566 if (src_col_l == stretch_width) {
567 src_col_l--;
568 }
569 if (src_row_l == stretch_height) {
570 src_row_l--;
571 }
572 int src_col_r = src_col_l + 1;
573 int src_row_r = src_row_l + 1;
574 if (src_col_r == stretch_width) {
575 src_col_r--;
576 }
577 if (src_row_r == stretch_height) {
578 src_row_r--;
579 }
580 int row_offset_l = src_row_l * stretch_pitch;
581 int row_offset_r = src_row_r * stretch_pitch;
582 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)];
583 if (transformF == FXDIB_Rgba) {
584 dest_pos[0] = (FX_BYTE)(r_bgra_cmyk >> 24);
585 dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
586 dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
587 } else {
588 *(FX_DWORD*)dest_pos = r_bgra_cmyk;
589 }
590 }
591 dest_pos += destBpp;
592 }
593 }
594 } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
595 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
596 int pos_pixel[8];
597 for (int row = 0; row < m_ResultHeight; row ++) {
598 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
599 for (int col = 0; col < m_ResultWidth; col ++) {
600 int src_col_l, src_row_l, res_x, res_y;
601 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
602 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
603 int u_w[4], v_w[4];
604 if (src_col_l == stretch_width) {
605 src_col_l--;
606 }
607 if (src_row_l == stretch_height) {
608 src_row_l--;
609 }
610 _bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, res_x, res_y, stretch_width, stretch_height);
611 FX_DWORD r_bgra_cmyk = argb[_bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, 1, 0)];
612 if (transformF == FXDIB_Rgba) {
613 dest_pos[0] = (FX_BYTE)(r_bgra_cmyk >> 24);
614 dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
615 dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
616 } else {
617 *(FX_DWORD*)dest_pos = r_bgra_cmyk;
618 }
619 }
620 dest_pos += destBpp;
621 }
622 }
623 } else {
624 CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
625 for (int row = 0; row < m_ResultHeight; row ++) {
626 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
627 for (int col = 0; col < m_ResultWidth; col ++) {
628 int src_col, src_row;
629 result2stretch_fix.Transform(col, row, src_col, src_row);
630 if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && src_row <= stretch_height) {
631 if (src_col == stretch_width) {
632 src_col --;
633 }
634 if (src_row == stretch_height) {
635 src_row --;
636 }
637 FX_DWORD r_bgra_cmyk = argb[stretch_buf[src_row * stretch_pitch + src_col]];
638 if (transformF == FXDIB_Rgba) {
639 dest_pos[0] = (FX_BYTE)(r_bgra_cmyk >> 24);
640 dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
641 dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
642 } else {
643 *(FX_DWORD*)dest_pos = r_bgra_cmyk;
644 }
645 }
646 dest_pos += destBpp;
647 }
648 }
649 }
650 } else {
651 FX_BOOL bHasAlpha = m_Storer.GetBitmap()->HasAlpha();
652 int destBpp = pTransformed->GetBPP() / 8;
653 if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) {
654 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
655 for (int row = 0; row < m_ResultHeight; row ++) {
656 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
657 for (int col = 0; col < m_ResultWidth; col ++) {
658 int src_col_l, src_row_l, res_x, res_y, r_pos_k_r = 0;
659 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
660 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
661 if (src_col_l == stretch_width) {
662 src_col_l--;
663 }
664 if (src_row_l == stretch_height) {
665 src_row_l--;
666 }
667 int src_col_r = src_col_l + 1;
668 int src_row_r = src_row_l + 1;
669 if (src_col_r == stretch_width) {
670 src_col_r--;
671 }
672 if (src_row_r == stretch_height) {
673 src_row_r--;
674 }
675 int row_offset_l = src_row_l * stretch_pitch;
676 int row_offset_r = src_row_r * stretch_pitch;
677 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);
678 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);
679 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);
680 if (bHasAlpha) {
681 if (transformF != FXDIB_Argb) {
682 if (transformF == FXDIB_Rgba) {
683 dest_pos[0] = r_pos_blue_c_r;
684 dest_pos[1] = r_pos_green_m_r;
685 dest_pos[2] = r_pos_red_y_r;
686 } else {
687 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);
688 *(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));
689 }
690 } else {
691 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);
692 *(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));
693 }
694 } else {
695 r_pos_k_r = 0xff;
696 if (transformF == FXDIB_Cmyka) {
697 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);
698 *(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));
699 } else {
700 *(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));
701 }
702 }
703 }
704 dest_pos += destBpp;
705 }
706 }
707 } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
708 CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
709 int pos_pixel[8];
710 for (int row = 0; row < m_ResultHeight; row ++) {
711 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
712 for (int col = 0; col < m_ResultWidth; col ++) {
713 int src_col_l, src_row_l, res_x, res_y, r_pos_k_r = 0;
714 result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, res_y);
715 if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && src_row_l <= stretch_height) {
716 int u_w[4], v_w[4];
717 if (src_col_l == stretch_width) {
718 src_col_l--;
719 }
720 if (src_row_l == stretch_height) {
721 src_row_l--;
722 }
723 _bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, res_x, res_y, stretch_width, stretch_height);
724 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);
725 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);
726 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);
727 if (bHasAlpha) {
728 if (transformF != FXDIB_Argb) {
729 if (transformF == FXDIB_Rgba) {
730 dest_pos[0] = r_pos_blue_c_r;
731 dest_pos[1] = r_pos_green_m_r;
732 dest_pos[2] = r_pos_red_y_r;
733 } else {
734 r_pos_k_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 3);
735 *(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));
736 }
737 } else {
738 FX_BYTE r_pos_a_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 3);
739 *(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));
740 }
741 } else {
742 r_pos_k_r = 0xff;
743 if (transformF == FXDIB_Cmyka) {
744 r_pos_k_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 3);
745 *(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));
746 } else {
747 *(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));
748 }
749 }
750 }
751 dest_pos += destBpp;
752 }
753 }
754 } else {
755 CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
756 for (int row = 0; row < m_ResultHeight; row ++) {
757 FX_BYTE* dest_pos = (FX_BYTE*)pTransformed->GetScanline(row);
758 for (int col = 0; col < m_ResultWidth; col ++) {
759 int src_col, src_row;
760 result2stretch_fix.Transform(col, row, src_col, src_row);
761 if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && src_row <= stretch_height) {
762 if (src_col == stretch_width) {
763 src_col --;
764 }
765 if (src_row == stretch_height) {
766 src_row --;
767 }
768 FX_LPCBYTE src_pos = stretch_buf + src_row * stretch_pitch + src_col * Bpp;
769 if (bHasAlpha) {
770 if (transformF != FXDIB_Argb) {
771 if (transformF == FXDIB_Rgba) {
772 dest_pos[0] = src_pos[0];
773 dest_pos[1] = src_pos[1];
774 dest_pos[2] = src_pos[2];
775 } else {
776 *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(src_pos[0], src_pos[1], src_pos[2], src_pos[3]));
777 }
778 } else {
779 *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(src_pos[3], src_pos[2], src_pos[1], src_pos[0]));
780 }
781 } else {
782 if (transformF == FXDIB_Cmyka) {
783 *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(src_pos[0], src_pos[1], src_pos[2], src_pos[3]));
784 } else {
785 *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(0xff, src_pos[2], src_pos[1], src_pos[0]));
786 }
787 }
788 }
789 dest_pos += destBpp;
790 }
791 }
792 }
793 }
794 }
795 m_Storer.Replace(pTransformed);
796 return FALSE;
797 }
798