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: 39 CFX_BilinearMatrix(const CFX_AffineMatrix& src, int bits): CPDF_FixedMatrix(src, bits) 40 {} 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 }; 57 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 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 } 171 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 } 182 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 } 201 CFX_ImageTransformer::CFX_ImageTransformer() 202 { 203 m_Status = 0; 204 m_pMatrix = NULL; 205 } 206 CFX_ImageTransformer::~CFX_ImageTransformer() 207 { 208 } 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 } 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 } 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 } 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 } 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 } 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
