fx_dib_transform.cpp revision ee451cb395940862dad63c85adfe8f2fd55e864c
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" 9int 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}; 36class CFX_BilinearMatrix : public CPDF_FixedMatrix 37{ 38public: 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}; 57CFX_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 156FX_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} 176CFX_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} 187CFX_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} 206CFX_ImageTransformer::CFX_ImageTransformer() 207{ 208 m_Status = 0; 209 m_pMatrix = NULL; 210} 211CFX_ImageTransformer::~CFX_ImageTransformer() 212{ 213} 214FX_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} 264FX_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} 281FX_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} 295void _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} 329FXDIB_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} 343FX_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