| // Copyright 2017 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/cfx_imagetransformer.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "core/fxge/dib/cfx_imagestretcher.h" |
| #include "core/fxge/fx_dib.h" |
| #include "third_party/base/ptr_util.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 static_cast<uint8_t>(pdfium::clamp(s_result, 0, 255)); |
| } |
| |
| 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_RetainPtr<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; |
| } |
| |
| class CPDF_FixedMatrix { |
| public: |
| CPDF_FixedMatrix(const CFX_Matrix& src, int bits) { |
| base = 1 << bits; |
| a = FXSYS_round(src.a * base); |
| b = FXSYS_round(src.b * base); |
| c = FXSYS_round(src.c * base); |
| d = FXSYS_round(src.d * base); |
| e = FXSYS_round(src.e * base); |
| f = FXSYS_round(src.f * base); |
| } |
| |
| void Transform(int x, int y, int* x1, int* y1) { |
| *x1 = (a * x + c * y + e + base / 2) / base; |
| *y1 = (b * x + d * y + f + base / 2) / base; |
| } |
| |
| int a; |
| int b; |
| int c; |
| int d; |
| int e; |
| int f; |
| int base; |
| }; |
| |
| class CFX_BilinearMatrix : public CPDF_FixedMatrix { |
| public: |
| CFX_BilinearMatrix(const CFX_Matrix& src, int bits) |
| : CPDF_FixedMatrix(src, bits) {} |
| void Transform(int x, int y, int* x1, int* y1, int* res_x, int* res_y) { |
| pdfium::base::CheckedNumeric<int> val = a; |
| pdfium::base::CheckedNumeric<int> val2 = c; |
| val *= x; |
| val2 *= y; |
| val += val2 + e + (base >> 1); |
| *x1 = val.ValueOrDefault(0); |
| |
| val = b; |
| val2 = d; |
| val *= x; |
| val2 *= y; |
| val += val2 + f + (base >> 1); |
| *y1 = val.ValueOrDefault(0); |
| |
| *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; |
| } |
| }; |
| |
| #define FIX16_005 0.05f |
| |
| } // namespace |
| |
| CFX_ImageTransformer::CFX_ImageTransformer( |
| const CFX_RetainPtr<CFX_DIBSource>& pSrc, |
| const CFX_Matrix* pMatrix, |
| int flags, |
| const FX_RECT* pClip) |
| : m_pSrc(pSrc), |
| m_pMatrix(pMatrix), |
| m_pClip(pClip), |
| m_Flags(flags), |
| m_Status(0) { |
| FX_RECT result_rect = m_pMatrix->GetUnitRect().GetClosestRect(); |
| FX_RECT result_clip = result_rect; |
| if (m_pClip) |
| result_clip.Intersect(*m_pClip); |
| |
| if (result_clip.IsEmpty()) |
| return; |
| |
| m_result = result_clip; |
| if (fabs(m_pMatrix->a) < fabs(m_pMatrix->b) / 20 && |
| fabs(m_pMatrix->d) < fabs(m_pMatrix->c) / 20 && |
| fabs(m_pMatrix->a) < 0.5f && fabs(m_pMatrix->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, |
| m_pMatrix->c > 0, m_pMatrix->b < 0); |
| m_Stretcher = pdfium::MakeUnique<CFX_ImageStretcher>( |
| &m_Storer, m_pSrc, dest_height, dest_width, result_clip, m_Flags); |
| m_Stretcher->Start(); |
| m_Status = 1; |
| return; |
| } |
| if (fabs(m_pMatrix->b) < FIX16_005 && fabs(m_pMatrix->c) < FIX16_005) { |
| int dest_width = static_cast<int>(m_pMatrix->a > 0 ? ceil(m_pMatrix->a) |
| : floor(m_pMatrix->a)); |
| int dest_height = static_cast<int>(m_pMatrix->d > 0 ? -ceil(m_pMatrix->d) |
| : -floor(m_pMatrix->d)); |
| result_clip.Offset(-result_rect.left, -result_rect.top); |
| m_Stretcher = pdfium::MakeUnique<CFX_ImageStretcher>( |
| &m_Storer, m_pSrc, dest_width, dest_height, result_clip, m_Flags); |
| m_Stretcher->Start(); |
| m_Status = 2; |
| return; |
| } |
| int stretch_width = |
| static_cast<int>(ceil(FXSYS_sqrt2(m_pMatrix->a, m_pMatrix->b))); |
| int stretch_height = |
| static_cast<int>(ceil(FXSYS_sqrt2(m_pMatrix->c, m_pMatrix->d))); |
| CFX_Matrix stretch2dest(1.0f, 0.0f, 0.0f, -1.0f, 0.0f, stretch_height); |
| stretch2dest.Concat( |
| CFX_Matrix(m_pMatrix->a / stretch_width, m_pMatrix->b / stretch_width, |
| m_pMatrix->c / stretch_height, m_pMatrix->d / stretch_height, |
| m_pMatrix->e, m_pMatrix->f)); |
| m_dest2stretch = stretch2dest.GetInverse(); |
| |
| CFX_FloatRect clip_rect_f(result_clip); |
| m_dest2stretch.TransformRect(clip_rect_f); |
| m_StretchClip = clip_rect_f.GetOuterRect(); |
| m_StretchClip.Intersect(0, 0, stretch_width, stretch_height); |
| m_Stretcher = pdfium::MakeUnique<CFX_ImageStretcher>( |
| &m_Storer, m_pSrc, stretch_width, stretch_height, m_StretchClip, m_Flags); |
| m_Stretcher->Start(); |
| m_Status = 3; |
| } |
| |
| CFX_ImageTransformer::~CFX_ImageTransformer() {} |
| |
| 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 = nullptr; |
| if (m_Storer.GetBitmap()->m_pAlphaMask) |
| stretch_buf_mask = m_Storer.GetBitmap()->m_pAlphaMask->GetBuffer(); |
| |
| int stretch_pitch = m_Storer.GetBitmap()->GetPitch(); |
| auto pTransformed = pdfium::MakeRetain<CFX_DIBitmap>(); |
| FXDIB_Format transformF = GetTransformedFormat(m_Stretcher->source()); |
| if (!pTransformed->Create(m_result.Width(), m_result.Height(), transformF)) |
| 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, (float)(m_result.left), |
| (float)(m_result.top)); |
| result2stretch.Concat(m_dest2stretch); |
| result2stretch.Translate(-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_result.Height(); row++) { |
| uint8_t* dest_pos_mask = |
| (uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col_l = 0; |
| int src_row_l = 0; |
| int res_x = 0; |
| int res_y = 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_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_result.Height(); row++) { |
| uint8_t* dest_pos_mask = |
| (uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col_l = 0; |
| int src_row_l = 0; |
| int res_x = 0; |
| int res_y = 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); |
| *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_result.Height(); row++) { |
| uint8_t* dest_pos_mask = |
| (uint8_t*)pTransformed->m_pAlphaMask->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col = 0; |
| int src_row = 0; |
| 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_result.Height(); row++) { |
| uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col_l = 0; |
| int src_row_l = 0; |
| int res_x = 0; |
| int res_y = 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; |
| *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_result.Height(); row++) { |
| uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col_l = 0; |
| int src_row_l = 0; |
| int res_x = 0; |
| int res_y = 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); |
| *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_result.Height(); row++) { |
| uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col = 0; |
| int src_row = 0; |
| 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; |
| 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); |
| } |
| } |
| } |
| 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_result.Height(); row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col_l = 0; |
| int src_row_l = 0; |
| int res_x = 0; |
| int res_y = 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; |
| 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_result.Height(); row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col_l = 0; |
| int src_row_l = 0; |
| int res_x = 0; |
| int res_y = 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); |
| 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_result.Height(); row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col = 0; |
| int src_row = 0; |
| 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 { |
| 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_result.Height(); row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col_l = 0; |
| int src_row_l = 0; |
| int res_x = 0; |
| int res_y = 0; |
| int 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_result.Height(); row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col_l = 0; |
| int src_row_l = 0; |
| int res_x = 0; |
| int res_y = 0; |
| int 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_result.Height(); row++) { |
| uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); |
| for (int col = 0; col < m_result.Width(); col++) { |
| int src_col = 0; |
| int src_row = 0; |
| 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(std::move(pTransformed)); |
| return false; |
| } |
| |
| CFX_RetainPtr<CFX_DIBitmap> CFX_ImageTransformer::DetachBitmap() { |
| return m_Storer.Detach(); |
| } |
