diff options
Diffstat (limited to 'core/src/fxge/dib/fx_dib_transform.cpp')
| -rw-r--r-- | core/src/fxge/dib/fx_dib_transform.cpp | 797 |
1 files changed, 797 insertions, 0 deletions
diff --git a/core/src/fxge/dib/fx_dib_transform.cpp b/core/src/fxge/dib/fx_dib_transform.cpp new file mode 100644 index 0000000000..4d83005161 --- /dev/null +++ b/core/src/fxge/dib/fx_dib_transform.cpp @@ -0,0 +1,797 @@ +// 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 "../../../include/fxge/fx_dib.h"
+#include "dib_int.h"
+int 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_AffineMatrix& 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 = FX_NEW CFX_DIBitmap;
+ if (!pTransBitmap) {
+ return NULL;
+ }
+ 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 src_pitch = m_Pitch;
+ int dest_pitch = pTransBitmap->GetPitch();
+ FX_LPBYTE 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_memset8(dest_buf, 0xff, dest_pitch * result_height);
+ for (int row = row_start; row < row_end; row ++) {
+ FX_LPCBYTE src_scan = GetScanline(row);
+ int dest_col = (bXFlip ? dest_clip.right - (row - row_start) - 1 : row) - dest_clip.left;
+ FX_LPBYTE 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;
+ FX_LPBYTE dest_scan = dest_buf + dest_col * nBytes;
+ if (bYFlip) {
+ dest_scan += (result_height - 1) * dest_pitch;
+ }
+ if (nBytes == 4) {
+ FX_DWORD* src_scan = (FX_DWORD*)GetScanline(row) + col_start;
+ for (int col = col_start; col < col_end; col ++) {
+ *(FX_DWORD*)dest_scan = *src_scan++;
+ dest_scan += dest_step;
+ }
+ } else {
+ FX_LPCBYTE 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) {
+ src_pitch = m_pAlphaMask->m_Pitch;
+ 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;
+ FX_LPBYTE dest_scan = dest_buf + dest_col;
+ if (bYFlip) {
+ dest_scan += (result_height - 1) * dest_pitch;
+ }
+ FX_LPCBYTE 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_AffineMatrix* pDestMatrix, int& result_left, int& result_top,
+ FX_DWORD 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, FX_DWORD 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_AffineMatrix* pDestMatrix, int flags, const FX_RECT* pDestClip)
+{
+ m_pMatrix = (CFX_AffineMatrix*)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_AffineMatrix 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_BYTE _bilinear_interpol(FX_LPCBYTE 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;
+ FX_LPCBYTE buf_u = buf + row_offset_l + c_offset;
+ FX_LPCBYTE buf_d = buf + row_offset_r + c_offset;
+ FX_LPCBYTE src_pos0 = buf_u + col_bpp_l;
+ FX_LPCBYTE src_pos1 = buf_u + col_bpp_r;
+ FX_LPCBYTE src_pos2 = buf_d + col_bpp_l;
+ FX_LPCBYTE src_pos3 = buf_d + col_bpp_r;
+ FX_BYTE r_pos_0 = (*src_pos0 * i_resx + *src_pos1 * res_x) >> 8;
+ FX_BYTE 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;
+}
+FX_BYTE _bicubic_interpol(FX_LPCBYTE 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] * (*(FX_BYTE*)(buf + pos_pixel[i + 4] * pitch + pos_pixel[j] * bpp + c_offset));
+ }
+ s_result += a_result * v_w[i];
+ }
+ s_result >>= 16;
+ return (FX_BYTE)(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;
+}
+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;
+ } else if (m_Status == 2) {
+ return m_Stretcher.Continue(pPause);
+ } else 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() == NULL) {
+ return FALSE;
+ }
+ FX_LPCBYTE stretch_buf = m_Storer.GetBitmap()->GetBuffer();
+ FX_LPCBYTE 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 = FX_NEW CFX_DIBitmap;
+ if (!pTransformed) {
+ return FALSE;
+ }
+ 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_AffineMatrix 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 == NULL && 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 ++) {
+ FX_BYTE* dest_pos_mask = (FX_BYTE*)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);
+ int pos_pixel[8];
+ for (int row = 0; row < m_ResultHeight; row ++) {
+ FX_BYTE* dest_pos_mask = (FX_BYTE*)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 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 ++) {
+ FX_BYTE* dest_pos_mask = (FX_BYTE*)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 ++) {
+ FX_LPBYTE dest_scan = (FX_LPBYTE)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);
+ int pos_pixel[8];
+ for (int row = 0; row < m_ResultHeight; row ++) {
+ FX_LPBYTE dest_scan = (FX_LPBYTE)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 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 ++) {
+ FX_LPBYTE dest_scan = (FX_LPBYTE)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 --;
+ }
+ FX_LPCBYTE 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) {
+ FX_BOOL bHasAlpha = m_Storer.GetBitmap()->HasAlpha();
+ FX_DWORD 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 ++) {
+ FX_BYTE* dest_pos = (FX_BYTE*)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;
+ 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)];
+ if (transformF == FXDIB_Rgba) {
+ dest_pos[0] = (FX_BYTE)(r_bgra_cmyk >> 24);
+ dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
+ dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
+ } else {
+ *(FX_DWORD*)dest_pos = r_bgra_cmyk;
+ }
+ }
+ dest_pos += destBpp;
+ }
+ }
+ } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
+ CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
+ int pos_pixel[8];
+ for (int row = 0; row < m_ResultHeight; row ++) {
+ FX_BYTE* dest_pos = (FX_BYTE*)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 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);
+ FX_DWORD 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] = (FX_BYTE)(r_bgra_cmyk >> 24);
+ dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
+ dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
+ } else {
+ *(FX_DWORD*)dest_pos = r_bgra_cmyk;
+ }
+ }
+ dest_pos += destBpp;
+ }
+ }
+ } else {
+ CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
+ for (int row = 0; row < m_ResultHeight; row ++) {
+ FX_BYTE* dest_pos = (FX_BYTE*)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 --;
+ }
+ FX_DWORD r_bgra_cmyk = argb[stretch_buf[src_row * stretch_pitch + src_col]];
+ if (transformF == FXDIB_Rgba) {
+ dest_pos[0] = (FX_BYTE)(r_bgra_cmyk >> 24);
+ dest_pos[1] = (FX_BYTE)(r_bgra_cmyk >> 16);
+ dest_pos[2] = (FX_BYTE)(r_bgra_cmyk >> 8);
+ } else {
+ *(FX_DWORD*)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 ++) {
+ FX_BYTE* dest_pos = (FX_BYTE*)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;
+ 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);
+ 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);
+ 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);
+ 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);
+ *(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));
+ }
+ } else {
+ 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);
+ *(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));
+ }
+ } 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);
+ *(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));
+ } else {
+ *(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));
+ }
+ }
+ }
+ dest_pos += destBpp;
+ }
+ }
+ } else if (m_Flags & FXDIB_BICUBIC_INTERPOL) {
+ CFX_BilinearMatrix result2stretch_fix(result2stretch, 8);
+ int pos_pixel[8];
+ for (int row = 0; row < m_ResultHeight; row ++) {
+ FX_BYTE* dest_pos = (FX_BYTE*)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 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);
+ 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);
+ 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);
+ 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);
+ 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);
+ *(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));
+ }
+ } else {
+ FX_BYTE r_pos_a_r = _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, u_w, v_w, res_x, res_y, Bpp, 3);
+ *(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));
+ }
+ } 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);
+ *(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));
+ } else {
+ *(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));
+ }
+ }
+ }
+ dest_pos += destBpp;
+ }
+ }
+ } else {
+ CPDF_FixedMatrix result2stretch_fix(result2stretch, 8);
+ for (int row = 0; row < m_ResultHeight; row ++) {
+ FX_BYTE* dest_pos = (FX_BYTE*)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 --;
+ }
+ FX_LPCBYTE 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 {
+ *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(src_pos[0], src_pos[1], src_pos[2], src_pos[3]));
+ }
+ } else {
+ *(FX_DWORD*)dest_pos = FXARGB_TODIB(FXARGB_MAKE(src_pos[3], src_pos[2], src_pos[1], src_pos[0]));
+ }
+ } else {
+ if (transformF == FXDIB_Cmyka) {
+ *(FX_DWORD*)dest_pos = FXCMYK_TODIB(CmykEncode(src_pos[0], src_pos[1], src_pos[2], src_pos[3]));
+ } else {
+ *(FX_DWORD*)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;
+}
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