diff options
Diffstat (limited to 'core/fxge/dib/cfx_imagetransformer.cpp')
-rw-r--r-- | core/fxge/dib/cfx_imagetransformer.cpp | 766 |
1 files changed, 766 insertions, 0 deletions
diff --git a/core/fxge/dib/cfx_imagetransformer.cpp b/core/fxge/dib/cfx_imagetransformer.cpp new file mode 100644 index 0000000000..7a519adebf --- /dev/null +++ b/core/fxge/dib/cfx_imagetransformer.cpp @@ -0,0 +1,766 @@ +// 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/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 (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_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 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; + } +}; + +#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) {} + +CFX_ImageTransformer::~CFX_ImageTransformer() {} + +bool CFX_ImageTransformer::Start() { + CFX_FloatRect unit_rect = m_pMatrix->GetUnitRect(); + FX_RECT result_rect = unit_rect.GetClosestRect(); + FX_RECT result_clip = result_rect; + if (m_pClip) + result_clip.Intersect(*m_pClip); + + if (result_clip.IsEmpty()) + return false; + + m_result = result_clip; + if (FXSYS_fabs(m_pMatrix->a) < FXSYS_fabs(m_pMatrix->b) / 20 && + FXSYS_fabs(m_pMatrix->d) < FXSYS_fabs(m_pMatrix->c) / 20 && + FXSYS_fabs(m_pMatrix->a) < 0.5f && FXSYS_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 true; + } + if (FXSYS_fabs(m_pMatrix->b) < FIX16_005 && + FXSYS_fabs(m_pMatrix->c) < FIX16_005) { + int dest_width = m_pMatrix->a > 0 ? (int)FXSYS_ceil(m_pMatrix->a) + : (int)FXSYS_floor(m_pMatrix->a); + int dest_height = m_pMatrix->d > 0 ? (int)-FXSYS_ceil(m_pMatrix->d) + : (int)-FXSYS_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 true; + } + int stretch_width = (int)FXSYS_ceil(FXSYS_sqrt2(m_pMatrix->a, m_pMatrix->b)); + int stretch_height = (int)FXSYS_ceil(FXSYS_sqrt2(m_pMatrix->c, m_pMatrix->d)); + CFX_Matrix stretch2dest(1.0f, 0.0f, 0.0f, -1.0f, 0.0f, + (float)(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.SetReverse(stretch2dest); + + 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; + return true; +} + +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, 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_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, 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_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, 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_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, 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_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, 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_result.Height(); row++) { + uint8_t* dest_scan = (uint8_t*)pTransformed->GetScanline(row); + for (int col = 0; col < m_result.Width(); 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; + 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, 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_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, 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_result.Height(); row++) { + uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); + for (int col = 0; col < m_result.Width(); 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 { + 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, 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_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, 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_result.Height(); row++) { + uint8_t* dest_pos = (uint8_t*)pTransformed->GetScanline(row); + for (int col = 0; col < m_result.Width(); 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(std::move(pTransformed)); + return false; +} + +CFX_RetainPtr<CFX_DIBitmap> CFX_ImageTransformer::DetachBitmap() { + return m_Storer.Detach(); +} |