| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "core/fxge/dib/dib_int.h" |
| |
| #include "core/include/fxge/fx_dib.h" |
| |
| namespace { |
| |
| uint8_t bilinear_interpol(const uint8_t* 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) { |
| int i_resx = 255 - res_x; |
| int col_bpp_l = src_col_l * bpp; |
| int col_bpp_r = src_col_r * bpp; |
| const uint8_t* buf_u = buf + row_offset_l + c_offset; |
| const uint8_t* buf_d = buf + row_offset_r + c_offset; |
| const uint8_t* src_pos0 = buf_u + col_bpp_l; |
| const uint8_t* src_pos1 = buf_u + col_bpp_r; |
| const uint8_t* src_pos2 = buf_d + col_bpp_l; |
| const uint8_t* src_pos3 = buf_d + col_bpp_r; |
| uint8_t r_pos_0 = (*src_pos0 * i_resx + *src_pos1 * res_x) >> 8; |
| uint8_t r_pos_1 = (*src_pos2 * i_resx + *src_pos3 * res_x) >> 8; |
| return (r_pos_0 * (255 - res_y) + r_pos_1 * res_y) >> 8; |
| } |
| |
| uint8_t bicubic_interpol(const uint8_t* buf, |
| int pitch, |
| int pos_pixel[], |
| int u_w[], |
| int v_w[], |
| int res_x, |
| int res_y, |
| int bpp, |
| int c_offset) { |
| int s_result = 0; |
| for (int i = 0; i < 4; i++) { |
| int a_result = 0; |
| for (int j = 0; j < 4; j++) { |
| a_result += u_w[j] * (*(uint8_t*)(buf + pos_pixel[i + 4] * pitch + |
| pos_pixel[j] * bpp + c_offset)); |
| } |
| s_result += a_result * v_w[i]; |
| } |
| s_result >>= 16; |
| return (uint8_t)(s_result < 0 ? 0 : s_result > 255 ? 255 : s_result); |
| } |
| |
| void 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) { |
| pos_pixel[0] = src_col_l - 1; |
| pos_pixel[1] = src_col_l; |
| pos_pixel[2] = src_col_l + 1; |
| pos_pixel[3] = src_col_l + 2; |
| pos_pixel[4] = src_row_l - 1; |
| pos_pixel[5] = src_row_l; |
| pos_pixel[6] = src_row_l + 1; |
| pos_pixel[7] = src_row_l + 2; |
| for (int i = 0; i < 4; i++) { |
| if (pos_pixel[i] < 0) { |
| pos_pixel[i] = 0; |
| } |
| if (pos_pixel[i] >= stretch_width) { |
| pos_pixel[i] = stretch_width - 1; |
| } |
| if (pos_pixel[i + 4] < 0) { |
| pos_pixel[i + 4] = 0; |
| } |
| if (pos_pixel[i + 4] >= stretch_height) { |
| pos_pixel[i + 4] = stretch_height - 1; |
| } |
| } |
| u_w[0] = SDP_Table[256 + res_x]; |
| u_w[1] = SDP_Table[res_x]; |
| u_w[2] = SDP_Table[256 - res_x]; |
| u_w[3] = SDP_Table[512 - res_x]; |
| v_w[0] = SDP_Table[256 + res_y]; |
| v_w[1] = SDP_Table[res_y]; |
| v_w[2] = SDP_Table[256 - res_y]; |
| v_w[3] = SDP_Table[512 - res_y]; |
| } |
| |
| FXDIB_Format GetTransformedFormat(const CFX_DIBSource* pDrc) { |
| FXDIB_Format format = pDrc->GetFormat(); |
| if (pDrc->IsAlphaMask()) { |
| format = FXDIB_8bppMask; |
| } else if (format >= 1025) { |
| format = FXDIB_Cmyka; |
| } else if (format <= 32 || format == FXDIB_Argb) { |
| format = FXDIB_Argb; |
| } else { |
| format = FXDIB_Rgba; |
| } |
| return format; |
| } |
| |
| } // namespace |
| |
| const int16_t SDP_Table[513] = { |
| 256, 256, 256, 256, 256, 256, 256, 256, 256, 255, 255, 255, 255, 255, 255, |
| 254, 254, 254, 254, 253, 253, 253, 252, 252, 252, 251, 251, 251, 250, 250, |
| 249, 249, 249, 248, 248, 247, 247, 246, 246, 245, 244, 244, 243, 243, 242, |
| 242, 241, 240, 240, 239, 238, 238, 237, 236, 236, 235, 234, 233, 233, 232, |
| 231, 230, 230, 229, 228, 227, 226, 226, 225, 224, 223, 222, 221, 220, 219, |
| 218, 218, 217, 216, 215, 214, 213, 212, 211, 210, 209, 208, 207, 206, 205, |
| 204, 203, 202, 201, 200, 199, 198, 196, 195, 194, 193, 192, 191, 190, 189, |
| 188, 186, 185, 184, 183, 182, 181, 179, 178, 177, 176, 175, 173, 172, 171, |
| 170, 169, 167, 166, 165, 164, 162, 161, 160, 159, 157, 156, 155, 154, 152, |
| 151, 150, 149, 147, 146, 145, 143, 142, 141, 140, 138, 137, 136, 134, 133, |
| 132, 130, 129, 128, 126, 125, 124, 122, 121, 120, 119, 117, 116, 115, 113, |
| 112, 111, 109, 108, 107, 105, 104, 103, 101, 100, 99, 97, 96, 95, 93, |
| 92, 91, 89, 88, 87, 85, 84, 83, 81, 80, 79, 77, 76, 75, 73, |
| 72, 71, 69, 68, 67, 66, 64, 63, 62, 60, 59, 58, 57, 55, 54, |
| 53, 52, 50, 49, 48, 47, 45, 44, 43, 42, 40, 39, 38, 37, 36, |
| 34, 33, 32, 31, 30, 28, 27, 26, 25, 24, 23, 21, 20, 19, 18, |
| 17, 16, 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, -11, |
| -12, -12, -13, -14, -15, -15, -16, -17, -17, -18, -19, -19, -20, -21, -21, |
| -22, -22, -23, -24, -24, -25, -25, -26, -26, -27, -27, -27, -28, -28, -29, |
| -29, -30, -30, -30, -31, -31, -31, -32, -32, -32, -33, -33, -33, -33, -34, |
| -34, -34, -34, -35, -35, -35, -35, -35, -36, -36, -36, -36, -36, -36, -36, |
| -36, -36, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, -37, |
| -37, -37, -37, -37, -37, -37, -37, -37, -36, -36, -36, -36, -36, -36, -36, |
| -36, -36, -35, -35, -35, -35, -35, -35, -34, -34, -34, -34, -34, -33, -33, |
| -33, -33, -33, -32, -32, -32, -32, -31, -31, -31, -31, -30, -30, -30, -30, |
| -29, -29, -29, -29, -28, -28, -28, -27, -27, -27, -27, -26, -26, -26, -25, |
| -25, -25, -24, -24, -24, -23, -23, -23, -22, -22, -22, -22, -21, -21, -21, |
| -20, -20, -20, -19, -19, -19, -18, -18, -18, -17, -17, -17, -16, -16, -16, |
| -15, -15, -15, -14, -14, -14, -13, -13, -13, -12, -12, -12, -11, -11, -11, |
| -10, -10, -10, -9, -9, -9, -9, -8, -8, -8, -7, -7, -7, -7, -6, |
| -6, -6, -6, -5, -5, -5, -5, -4, -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, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, |
| }; |
| |
| class CFX_BilinearMatrix : public CPDF_FixedMatrix { |
| public: |
| CFX_BilinearMatrix(const CFX_Matrix& src, int bits) |
| : CPDF_FixedMatrix(src, bits) {} |
| inline void Transform(int x, |
| int y, |
| int& x1, |
| int& y1, |
| int& res_x, |
| int& res_y) { |
| x1 = a * x + c * y + e + base / 2; |
| y1 = b * x + d * y + f + base / 2; |
| res_x = x1 % base; |
| res_y = y1 % base; |
| if (res_x < 0 && res_x > -base) { |
| res_x = base + res_x; |
| } |
| if (res_y < 0 && res_x > -base) { |
| res_y = base + res_y; |
| } |
| x1 /= base; |
| y1 /= base; |
| } |
| }; |
| CFX_DIBitmap* CFX_DIBSource::SwapXY(FX_BOOL bXFlip, |
| FX_BOOL bYFlip, |
| const FX_RECT* pDestClip) const { |
| FX_RECT dest_clip(0, 0, m_Height, m_Width); |
| if (pDestClip) { |
| dest_clip.Intersect(*pDestClip); |
| } |
| if (dest_clip.IsEmpty()) { |
| return NULL; |
| } |
| CFX_DIBitmap* pTransBitmap = new CFX_DIBitmap; |
| int result_height = dest_clip.Height(), result_width = dest_clip.Width(); |
| if (!pTransBitmap->Create(result_width, result_height, GetFormat())) { |
| delete pTransBitmap; |
| return NULL; |
| } |
| pTransBitmap->CopyPalette(m_pPalette); |
| int dest_pitch = pTransBitmap->GetPitch(); |
| uint8_t* dest_buf = pTransBitmap->GetBuffer(); |
| int row_start = bXFlip ? m_Height - dest_clip.right : dest_clip.left; |
| int row_end = bXFlip ? m_Height - dest_clip.left : dest_clip.right; |
| int col_start = bYFlip ? m_Width - dest_clip.bottom : dest_clip.top; |
| int col_end = bYFlip ? m_Width - dest_clip.top : dest_clip.bottom; |
| if (GetBPP() == 1) { |
| FXSYS_memset(dest_buf, 0xff, dest_pitch * result_height); |
| for (int row = row_start; row < row_end; row++) { |
| const uint8_t* src_scan = GetScanline(row); |
| int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - |
| dest_clip.left; |
| uint8_t* dest_scan = dest_buf; |
| if (bYFlip) { |
| dest_scan += (result_height - 1) * dest_pitch; |
| } |
| int dest_step = bYFlip ? -dest_pitch : dest_pitch; |
| for (int col = col_start; col < col_end; col++) { |
| if (!(src_scan[col / 8] & (1 << (7 - col % 8)))) { |
| dest_scan[dest_col / 8] &= ~(1 << (7 - dest_col % 8)); |
| } |
| dest_scan += dest_step; |
| } |
| } |
| } else { |
| int nBytes = GetBPP() / 8; |
| int dest_step = bYFlip ? -dest_pitch : dest_pitch; |
| if (nBytes == 3) { |
| dest_step -= 2; |
| } |
| for (int row = row_start; row < row_end; row++) { |
| int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - |
| dest_clip.left; |
| uint8_t* dest_scan = dest_buf + dest_col * nBytes; |
| if (bYFlip) { |
| dest_scan += (result_height - 1) * dest_pitch; |
| } |
| if (nBytes == 4) { |
| uint32_t* src_scan = (uint32_t*)GetScanline(row) + col_start; |
| for (int col = col_start; col < col_end; col++) { |
| *(uint32_t*)dest_scan = *src_scan++; |
| dest_scan += dest_step; |
| } |
| } else { |
| const uint8_t* src_scan = GetScanline(row) + col_start * nBytes; |
| if (nBytes == 1) { |
| for (int col = col_start; col < col_end; col++) { |
| *dest_scan = *src_scan++; |
| dest_scan += dest_step; |
| } |
| } else { |
| for (int col = col_start; col < col_end; col++) { |
| *dest_scan++ = *src_scan++; |
| *dest_scan++ = *src_scan++; |
| *dest_scan = *src_scan++; |
| dest_scan += dest_step; |
| } |
| } |
| } |
| } |
| } |
| if (m_pAlphaMask) { |
| dest_pitch = pTransBitmap->m_pAlphaMask->GetPitch(); |
| dest_buf = pTransBitmap->m_pAlphaMask->GetBuffer(); |
| int dest_step = bYFlip ? -dest_pitch : dest_pitch; |
| for (int row = row_start; row < row_end; row++) { |
| int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - |
| dest_clip.left; |
| uint8_t* dest_scan = dest_buf + dest_col; |
| if (bYFlip) { |
| dest_scan += (result_height - 1) * dest_pitch; |
| } |
| const uint8_t* src_scan = m_pAlphaMask->GetScanline(row) + col_start; |
| for (int col = col_start; col < col_end; col++) { |
| *dest_scan = *src_scan++; |
| dest_scan += dest_step; |
| } |
| } |
| } |
| return pTransBitmap; |
| } |
| #define FIX16_005 0.05f |
| FX_RECT FXDIB_SwapClipBox(FX_RECT& clip, |
| int width, |
| int height, |
| FX_BOOL bFlipX, |
| FX_BOOL bFlipY) { |
| FX_RECT rect; |
| if (bFlipY) { |
| rect.left = height - clip.top; |
| rect.right = height - clip.bottom; |
| } else { |
| rect.left = clip.top; |
| rect.right = clip.bottom; |
| } |
| if (bFlipX) { |
| rect.top = width - clip.left; |
| rect.bottom = width - clip.right; |
| } else { |
| rect.top = clip.left; |
| rect.bottom = clip.right; |
| } |
| rect.Normalize(); |
| return rect; |
| } |
| CFX_DIBitmap* CFX_DIBSource::TransformTo(const CFX_Matrix* pDestMatrix, |
| int& result_left, |
| int& result_top, |
| uint32_t flags, |
| const FX_RECT* pDestClip) const { |
| CFX_ImageTransformer transformer; |
| transformer.Start(this, pDestMatrix, flags, pDestClip); |
| transformer.Continue(NULL); |
| result_left = transformer.m_ResultLeft; |
| result_top = transformer.m_ResultTop; |
| CFX_DIBitmap* pTransformed = transformer.m_Storer.Detach(); |
| return pTransformed; |
| } |
| CFX_DIBitmap* CFX_DIBSource::StretchTo(int dest_width, |
| int dest_height, |
| uint32_t flags, |
| const FX_RECT* pClip) const { |
| FX_RECT clip_rect(0, 0, FXSYS_abs(dest_width), FXSYS_abs(dest_height)); |
| if (pClip) { |
| clip_rect.Intersect(*pClip); |
| } |
| if (clip_rect.IsEmpty()) { |
| return NULL; |
| } |
| if (dest_width == m_Width && dest_height == m_Height) { |
| return Clone(&clip_rect); |
| } |
| CFX_ImageStretcher stretcher; |
| CFX_BitmapStorer storer; |
| if (stretcher.Start(&storer, this, dest_width, dest_height, clip_rect, |
| flags)) { |
| stretcher.Continue(NULL); |
| } |
| return storer.Detach(); |
| } |
| CFX_ImageTransformer::CFX_ImageTransformer() { |
| m_Status = 0; |
| m_pMatrix = NULL; |
| } |
| CFX_ImageTransformer::~CFX_ImageTransformer() {} |
| FX_BOOL CFX_ImageTransformer::Start(const CFX_DIBSource* pSrc, |
| const CFX_Matrix* pDestMatrix, |
| int flags, |
| const FX_RECT* pDestClip) { |
| m_pMatrix = (CFX_Matrix*)pDestMatrix; |
| CFX_FloatRect unit_rect = pDestMatrix->GetUnitRect(); |
| FX_RECT result_rect = unit_rect.GetClosestRect(); |
| FX_RECT result_clip = result_rect; |
| if (pDestClip) { |
| result_clip.Intersect(*pDestClip); |
| } |
| if (result_clip.IsEmpty()) { |
| return FALSE; |
| } |
| m_ResultLeft = result_clip.left; |
| m_ResultTop = result_clip.top; |
| m_ResultWidth = result_clip.Width(); |
| m_ResultHeight = result_clip.Height(); |
| m_Flags = flags; |
| if (FXSYS_fabs(pDestMatrix->a) < FXSYS_fabs(pDestMatrix->b) / 20 && |
| FXSYS_fabs(pDestMatrix->d) < FXSYS_fabs(pDestMatrix->c) / 20 && |
| FXSYS_fabs(pDestMatrix->a) < 0.5f && FXSYS_fabs(pDestMatrix->d) < 0.5f) { |
| int dest_width = result_rect.Width(); |
| int dest_height = result_rect.Height(); |
| result_clip.Offset(-result_rect.left, -result_rect.top); |
| result_clip = FXDIB_SwapClipBox(result_clip, dest_width, dest_height, |
| pDestMatrix->c > 0, pDestMatrix->b < 0); |
| m_Stretcher.Start(&m_Storer, pSrc, dest_height, dest_width, result_clip, |
| flags); |
| m_Status = 1; |
| return TRUE; |
| } |
| if (FXSYS_fabs(pDestMatrix->b) < FIX16_005 && |
| FXSYS_fabs(pDestMatrix->c) < FIX16_005) { |
| int dest_width = pDestMatrix->a > 0 ? (int)FXSYS_ceil(pDestMatrix->a) |
| : (int)FXSYS_floor(pDestMatrix->a); |
| int dest_height = pDestMatrix->d > 0 ? (int)-FXSYS_ceil(pDestMatrix->d) |
| : (int)-FXSYS_floor(pDestMatrix->d); |
| result_clip.Offset(-result_rect.left, -result_rect.top); |
| m_Stretcher.Start(&m_Storer, pSrc, dest_width, dest_height, result_clip, |
| flags); |
| m_Status = 2; |
| return TRUE; |
| } |
| int stretch_width = |
| (int)FXSYS_ceil(FXSYS_sqrt2(pDestMatrix->a, pDestMatrix->b)); |
| int stretch_height = |
| (int)FXSYS_ceil(FXSYS_sqrt2(pDestMatrix->c, pDestMatrix->d)); |
| CFX_Matrix stretch2dest(1.0f, 0.0f, 0.0f, -1.0f, 0.0f, |
| (FX_FLOAT)(stretch_height)); |
| stretch2dest.Concat( |
| pDestMatrix->a / stretch_width, pDestMatrix->b / stretch_width, |
| pDestMatrix->c / stretch_height, pDestMatrix->d / stretch_height, |
| pDestMatrix->e, pDestMatrix->f); |
| m_dest2stretch.SetReverse(stretch2dest); |
| CFX_FloatRect clip_rect_f(result_clip); |
| clip_rect_f.Transform(&m_dest2stretch); |
| m_StretchClip = clip_rect_f.GetOutterRect(); |
| m_StretchClip.Intersect(0, 0, stretch_width, stretch_height); |
| m_Stretcher.Start(&m_Storer, pSrc, stretch_width, stretch_height, |
| m_StretchClip, flags); |
| m_Status = 3; |
| return TRUE; |
| } |
| |
| FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { |
| if (m_Status == 1) { |
| if (m_Stretcher.Continue(pPause)) { |
| return TRUE; |
| } |
| if (m_Storer.GetBitmap()) { |
| m_Storer.Replace( |
| m_Storer.GetBitmap()->SwapXY(m_pMatrix->c > 0, m_pMatrix->b < 0)); |
| } |
| return FALSE; |
| } |
| if (m_Status == 2) { |
| return m_Stretcher.Continue(pPause); |
| } |
| if (m_Status != 3) { |
| return FALSE; |
| } |
| if (m_Stretcher.Continue(pPause)) { |
| return TRUE; |
| } |
| int stretch_width = m_StretchClip.Width(); |
| int stretch_height = m_StretchClip.Height(); |
| if (!m_Storer.GetBitmap()) { |
| return FALSE; |
| } |
| const uint8_t* stretch_buf = m_Storer.GetBitmap()->GetBuffer(); |
| const uint8_t* stretch_buf_mask = NULL; |
| if (m_Storer.GetBitmap()->m_pAlphaMask) { |
| stretch_buf_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetBuffer(); |
| } |
| int stretch_pitch = m_Storer.GetBitmap()->GetPitch(); |
| CFX_DIBitmap* pTransformed = new CFX_DIBitmap; |
| FXDIB_Format transformF = GetTransformedFormat(m_Stretcher.m_pSource); |
| if (!pTransformed->Create(m_ResultWidth, m_ResultHeight, transformF)) { |
| delete pTransformed; |
| return FALSE; |
| } |
| pTransformed->Clear(0); |
| if (pTransformed->m_pAlphaMask) { |
| pTransformed->m_pAlphaMask->Clear(0); |
| } |
| CFX_Matrix result2stretch(1.0f, 0.0f, 0.0f, 1.0f, (FX_FLOAT)(m_ResultLeft), |
| (FX_FLOAT)(m_ResultTop)); |
| result2stretch.Concat(m_dest2stretch); |
| result2stretch.TranslateI(-m_StretchClip.left, -m_StretchClip.top); |
| if (!stretch_buf_mask && pTransformed->m_pAlphaMask) { |
| pTransformed->m_pAlphaMask->Clear(0xff000000); |
| } else if (pTransformed->m_pAlphaMask) { |
| int stretch_pitch_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetPitch(); |
| if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) { |
| CFX_BilinearMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos_mask = |
| (uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col_l, src_row_l, res_x, res_y; |
| result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, |
| res_y); |
| if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && |
| src_row_l <= stretch_height) { |
| if (src_col_l == stretch_width) { |
| src_col_l--; |
| } |
| if (src_row_l == stretch_height) { |
| src_row_l--; |
| } |
| int src_col_r = src_col_l + 1; |
| int src_row_r = src_row_l + 1; |
| if (src_col_r == stretch_width) { |
| src_col_r--; |
| } |
| if (src_row_r == stretch_height) { |
| src_row_r--; |
| } |
| int row_offset_l = src_row_l * stretch_pitch_mask; |
| int row_offset_r = src_row_r * stretch_pitch_mask; |
| *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); |
| } |
| dest_pos_mask++; |
| } |
| } |
| } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) { |
| CFX_BilinearMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos_mask = |
| (uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col_l, src_row_l, res_x, res_y; |
| result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, |
| res_y); |
| if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && |
| src_row_l <= stretch_height) { |
| int pos_pixel[8]; |
| int u_w[4], v_w[4]; |
| if (src_col_l == stretch_width) { |
| src_col_l--; |
| } |
| if (src_row_l == stretch_height) { |
| src_row_l--; |
| } |
| bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, |
| res_x, res_y, stretch_width, stretch_height); |
| *dest_pos_mask = |
| bicubic_interpol(stretch_buf_mask, stretch_pitch_mask, |
| pos_pixel, u_w, v_w, res_x, res_y, 1, 0); |
| } |
| dest_pos_mask++; |
| } |
| } |
| } else { |
| CPDF_FixedMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos_mask = |
| (uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col, src_row; |
| result2stretch_fix.Transform(col, row, src_col, src_row); |
| if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && |
| src_row <= stretch_height) { |
| if (src_col == stretch_width) { |
| src_col--; |
| } |
| if (src_row == stretch_height) { |
| src_row--; |
| } |
| *dest_pos_mask = |
| stretch_buf_mask[src_row * stretch_pitch_mask + src_col]; |
| } |
| dest_pos_mask++; |
| } |
| } |
| } |
| } |
| if (m_Storer.GetBitmap()->IsAlphaMask()) { |
| if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) { |
| CFX_BilinearMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col_l, src_row_l, res_x, res_y; |
| result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, |
| res_y); |
| if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && |
| src_row_l <= stretch_height) { |
| if (src_col_l == stretch_width) { |
| src_col_l--; |
| } |
| if (src_row_l == stretch_height) { |
| src_row_l--; |
| } |
| int src_col_r = src_col_l + 1; |
| int src_row_r = src_row_l + 1; |
| if (src_col_r == stretch_width) { |
| src_col_r--; |
| } |
| if (src_row_r == stretch_height) { |
| src_row_r--; |
| } |
| int row_offset_l = src_row_l * stretch_pitch; |
| int row_offset_r = src_row_r * stretch_pitch; |
| *dest_scan = |
| bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, |
| src_col_l, src_col_r, res_x, res_y, 1, 0); |
| } |
| dest_scan++; |
| } |
| } |
| } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) { |
| CFX_BilinearMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col_l, src_row_l, res_x, res_y; |
| result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, |
| res_y); |
| if (src_col_l >= 0 && src_col_l <= stretch_width && src_row_l >= 0 && |
| src_row_l <= stretch_height) { |
| int pos_pixel[8]; |
| int u_w[4], v_w[4]; |
| if (src_col_l == stretch_width) { |
| src_col_l--; |
| } |
| if (src_row_l == stretch_height) { |
| src_row_l--; |
| } |
| bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, |
| res_x, res_y, stretch_width, stretch_height); |
| *dest_scan = bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, |
| u_w, v_w, res_x, res_y, 1, 0); |
| } |
| dest_scan++; |
| } |
| } |
| } else { |
| CPDF_FixedMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col, src_row; |
| result2stretch_fix.Transform(col, row, src_col, src_row); |
| if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && |
| src_row <= stretch_height) { |
| if (src_col == stretch_width) { |
| src_col--; |
| } |
| if (src_row == stretch_height) { |
| src_row--; |
| } |
| const uint8_t* src_pixel = |
| stretch_buf + stretch_pitch * src_row + src_col; |
| *dest_scan = *src_pixel; |
| } |
| dest_scan++; |
| } |
| } |
| } |
| } else { |
| int Bpp = m_Storer.GetBitmap()->GetBPP() / 8; |
| int destBpp = pTransformed->GetBPP() / 8; |
| if (Bpp == 1) { |
| uint32_t argb[256]; |
| FX_ARGB* pPal = m_Storer.GetBitmap()->GetPalette(); |
| if (pPal) { |
| for (int i = 0; i < 256; i++) { |
| argb[i] = pPal[i]; |
| } |
| } else { |
| if (m_Storer.GetBitmap()->IsCmykImage()) { |
| for (int i = 0; i < 256; i++) { |
| argb[i] = 255 - i; |
| } |
| } else { |
| for (int i = 0; i < 256; i++) { |
| argb[i] = 0xff000000 | (i * 0x010101); |
| } |
| } |
| } |
| if (!(m_Flags & FXDIB_DOWNSAMPLE) && |
| !(m_Flags & FXDIB_BICUBIC_INTERPOL)) { |
| CFX_BilinearMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col_l, src_row_l, res_x, res_y; |
| result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, |
| res_y); |
| if (src_col_l >= 0 && src_col_l <= stretch_width && |
| src_row_l >= 0 && src_row_l <= stretch_height) { |
| if (src_col_l == stretch_width) { |
| src_col_l--; |
| } |
| if (src_row_l == stretch_height) { |
| src_row_l--; |
| } |
| int src_col_r = src_col_l + 1; |
| int src_row_r = src_row_l + 1; |
| if (src_col_r == stretch_width) { |
| src_col_r--; |
| } |
| if (src_row_r == stretch_height) { |
| src_row_r--; |
| } |
| int row_offset_l = src_row_l * stretch_pitch; |
| int row_offset_r = src_row_r * stretch_pitch; |
| uint32_t 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)]; |
| if (transformF == FXDIB_Rgba) { |
| dest_pos[0] = (uint8_t)(r_bgra_cmyk >> 24); |
| dest_pos[1] = (uint8_t)(r_bgra_cmyk >> 16); |
| dest_pos[2] = (uint8_t)(r_bgra_cmyk >> 8); |
| } else { |
| *(uint32_t*)dest_pos = r_bgra_cmyk; |
| } |
| } |
| dest_pos += destBpp; |
| } |
| } |
| } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) { |
| CFX_BilinearMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col_l, src_row_l, res_x, res_y; |
| result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, |
| res_y); |
| if (src_col_l >= 0 && src_col_l <= stretch_width && |
| src_row_l >= 0 && src_row_l <= stretch_height) { |
| int pos_pixel[8]; |
| int u_w[4], v_w[4]; |
| if (src_col_l == stretch_width) { |
| src_col_l--; |
| } |
| if (src_row_l == stretch_height) { |
| src_row_l--; |
| } |
| bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, |
| res_x, res_y, stretch_width, |
| stretch_height); |
| uint32_t r_bgra_cmyk = |
| argb[bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, |
| u_w, v_w, res_x, res_y, 1, 0)]; |
| if (transformF == FXDIB_Rgba) { |
| dest_pos[0] = (uint8_t)(r_bgra_cmyk >> 24); |
| dest_pos[1] = (uint8_t)(r_bgra_cmyk >> 16); |
| dest_pos[2] = (uint8_t)(r_bgra_cmyk >> 8); |
| } else { |
| *(uint32_t*)dest_pos = r_bgra_cmyk; |
| } |
| } |
| dest_pos += destBpp; |
| } |
| } |
| } else { |
| CPDF_FixedMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col, src_row; |
| result2stretch_fix.Transform(col, row, src_col, src_row); |
| if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && |
| src_row <= stretch_height) { |
| if (src_col == stretch_width) { |
| src_col--; |
| } |
| if (src_row == stretch_height) { |
| src_row--; |
| } |
| uint32_t r_bgra_cmyk = |
| argb[stretch_buf[src_row * stretch_pitch + src_col]]; |
| if (transformF == FXDIB_Rgba) { |
| dest_pos[0] = (uint8_t)(r_bgra_cmyk >> 24); |
| dest_pos[1] = (uint8_t)(r_bgra_cmyk >> 16); |
| dest_pos[2] = (uint8_t)(r_bgra_cmyk >> 8); |
| } else { |
| *(uint32_t*)dest_pos = r_bgra_cmyk; |
| } |
| } |
| dest_pos += destBpp; |
| } |
| } |
| } |
| } else { |
| FX_BOOL bHasAlpha = m_Storer.GetBitmap()->HasAlpha(); |
| int destBpp = pTransformed->GetBPP() / 8; |
| if (!(m_Flags & FXDIB_DOWNSAMPLE) && |
| !(m_Flags & FXDIB_BICUBIC_INTERPOL)) { |
| CFX_BilinearMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col_l, src_row_l, res_x, res_y, r_pos_k_r = 0; |
| result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, |
| res_y); |
| if (src_col_l >= 0 && src_col_l <= stretch_width && |
| src_row_l >= 0 && src_row_l <= stretch_height) { |
| if (src_col_l == stretch_width) { |
| src_col_l--; |
| } |
| if (src_row_l == stretch_height) { |
| src_row_l--; |
| } |
| int src_col_r = src_col_l + 1; |
| int src_row_r = src_row_l + 1; |
| if (src_col_r == stretch_width) { |
| src_col_r--; |
| } |
| if (src_row_r == stretch_height) { |
| src_row_r--; |
| } |
| int row_offset_l = src_row_l * stretch_pitch; |
| int row_offset_r = src_row_r * stretch_pitch; |
| uint8_t 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); |
| uint8_t 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); |
| uint8_t 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); |
| if (bHasAlpha) { |
| if (transformF != FXDIB_Argb) { |
| if (transformF == FXDIB_Rgba) { |
| dest_pos[0] = r_pos_blue_c_r; |
| dest_pos[1] = r_pos_green_m_r; |
| dest_pos[2] = r_pos_red_y_r; |
| } else { |
| 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); |
| *(uint32_t*)dest_pos = |
| FXCMYK_TODIB(CmykEncode(r_pos_blue_c_r, r_pos_green_m_r, |
| r_pos_red_y_r, r_pos_k_r)); |
| } |
| } else { |
| uint8_t 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); |
| *(uint32_t*)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)); |
| } |
| } else { |
| r_pos_k_r = 0xff; |
| if (transformF == FXDIB_Cmyka) { |
| 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); |
| *(uint32_t*)dest_pos = |
| FXCMYK_TODIB(CmykEncode(r_pos_blue_c_r, r_pos_green_m_r, |
| r_pos_red_y_r, r_pos_k_r)); |
| } else { |
| *(uint32_t*)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)); |
| } |
| } |
| } |
| dest_pos += destBpp; |
| } |
| } |
| } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) { |
| CFX_BilinearMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col_l, src_row_l, res_x, res_y, r_pos_k_r = 0; |
| result2stretch_fix.Transform(col, row, src_col_l, src_row_l, res_x, |
| res_y); |
| if (src_col_l >= 0 && src_col_l <= stretch_width && |
| src_row_l >= 0 && src_row_l <= stretch_height) { |
| int pos_pixel[8]; |
| int u_w[4], v_w[4]; |
| if (src_col_l == stretch_width) { |
| src_col_l--; |
| } |
| if (src_row_l == stretch_height) { |
| src_row_l--; |
| } |
| bicubic_get_pos_weight(pos_pixel, u_w, v_w, src_col_l, src_row_l, |
| res_x, res_y, stretch_width, |
| stretch_height); |
| uint8_t r_pos_red_y_r = |
| bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, |
| v_w, res_x, res_y, Bpp, 2); |
| uint8_t r_pos_green_m_r = |
| bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, |
| v_w, res_x, res_y, Bpp, 1); |
| uint8_t r_pos_blue_c_r = |
| bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, |
| v_w, res_x, res_y, Bpp, 0); |
| if (bHasAlpha) { |
| if (transformF != FXDIB_Argb) { |
| if (transformF == FXDIB_Rgba) { |
| dest_pos[0] = r_pos_blue_c_r; |
| dest_pos[1] = r_pos_green_m_r; |
| dest_pos[2] = r_pos_red_y_r; |
| } else { |
| r_pos_k_r = |
| bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, |
| u_w, v_w, res_x, res_y, Bpp, 3); |
| *(uint32_t*)dest_pos = |
| FXCMYK_TODIB(CmykEncode(r_pos_blue_c_r, r_pos_green_m_r, |
| r_pos_red_y_r, r_pos_k_r)); |
| } |
| } else { |
| uint8_t r_pos_a_r = |
| bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, |
| u_w, v_w, res_x, res_y, Bpp, 3); |
| *(uint32_t*)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)); |
| } |
| } else { |
| r_pos_k_r = 0xff; |
| if (transformF == FXDIB_Cmyka) { |
| r_pos_k_r = |
| bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, |
| u_w, v_w, res_x, res_y, Bpp, 3); |
| *(uint32_t*)dest_pos = |
| FXCMYK_TODIB(CmykEncode(r_pos_blue_c_r, r_pos_green_m_r, |
| r_pos_red_y_r, r_pos_k_r)); |
| } else { |
| *(uint32_t*)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)); |
| } |
| } |
| } |
| dest_pos += destBpp; |
| } |
| } |
| } else { |
| CPDF_FixedMatrix result2stretch_fix(result2stretch, 8); |
| for (int row = 0; row < m_ResultHeight; row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_ResultWidth; col++) { |
| int src_col, src_row; |
| result2stretch_fix.Transform(col, row, src_col, src_row); |
| if (src_col >= 0 && src_col <= stretch_width && src_row >= 0 && |
| src_row <= stretch_height) { |
| if (src_col == stretch_width) { |
| src_col--; |
| } |
| if (src_row == stretch_height) { |
| src_row--; |
| } |
| const uint8_t* src_pos = |
| stretch_buf + src_row * stretch_pitch + src_col * Bpp; |
| if (bHasAlpha) { |
| if (transformF != FXDIB_Argb) { |
| if (transformF == FXDIB_Rgba) { |
| dest_pos[0] = src_pos[0]; |
| dest_pos[1] = src_pos[1]; |
| dest_pos[2] = src_pos[2]; |
| } else { |
| *(uint32_t*)dest_pos = FXCMYK_TODIB(CmykEncode( |
| src_pos[0], src_pos[1], src_pos[2], src_pos[3])); |
| } |
| } else { |
| *(uint32_t*)dest_pos = FXARGB_TODIB(FXARGB_MAKE( |
| src_pos[3], src_pos[2], src_pos[1], src_pos[0])); |
| } |
| } else { |
| if (transformF == FXDIB_Cmyka) { |
| *(uint32_t*)dest_pos = FXCMYK_TODIB(CmykEncode( |
| src_pos[0], src_pos[1], src_pos[2], src_pos[3])); |
| } else { |
| *(uint32_t*)dest_pos = FXARGB_TODIB( |
| FXARGB_MAKE(0xff, src_pos[2], src_pos[1], src_pos[0])); |
| } |
| } |
| } |
| dest_pos += destBpp; |
| } |
| } |
| } |
| } |
| } |
| m_Storer.Replace(pTransformed); |
| return FALSE; |
| } |
