diff options
author | Lei Zhang <thestig@chromium.org> | 2015-11-10 09:48:59 -0800 |
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committer | Lei Zhang <thestig@chromium.org> | 2015-11-10 09:48:59 -0800 |
commit | b5d6497946c1117e6f54506eb85b47e0a7e0234c (patch) | |
tree | c3e2e100522e6f5e207fa541e9f07a634df54e33 /core/src/fxge | |
parent | 9fb27cb9797937499c9678bc74cf7846cbf5d2b8 (diff) | |
download | pdfium-b5d6497946c1117e6f54506eb85b47e0a7e0234c.tar.xz |
Make SDP_Table an array of int16_t.
Move some functions into an anonymous namespace.
R=tsepez@chromium.org
Review URL: https://codereview.chromium.org/1431253002 .
Diffstat (limited to 'core/src/fxge')
-rw-r--r-- | core/src/fxge/dib/dib_int.h | 4 | ||||
-rw-r--r-- | core/src/fxge/dib/fx_dib_transform.cpp | 309 |
2 files changed, 162 insertions, 151 deletions
diff --git a/core/src/fxge/dib/dib_int.h b/core/src/fxge/dib/dib_int.h index c90e3b105e..e01304afd0 100644 --- a/core/src/fxge/dib/dib_int.h +++ b/core/src/fxge/dib/dib_int.h @@ -7,12 +7,14 @@ #ifndef CORE_SRC_FXGE_DIB_DIB_INT_H_ #define CORE_SRC_FXGE_DIB_DIB_INT_H_ +#include <stdint.h> + #include "core/include/fxcrt/fx_coordinates.h" #include "core/include/fxge/fx_dib.h" class IFX_ScanlineComposer; -extern const int SDP_Table[513]; +extern const int16_t SDP_Table[513]; class CPDF_FixedMatrix { public: diff --git a/core/src/fxge/dib/fx_dib_transform.cpp b/core/src/fxge/dib/fx_dib_transform.cpp index 99c38afe22..43376c2b81 100644 --- a/core/src/fxge/dib/fx_dib_transform.cpp +++ b/core/src/fxge/dib/fx_dib_transform.cpp @@ -8,7 +8,111 @@ #include "core/include/fxge/fx_dib.h" -const int SDP_Table[513] = { +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, @@ -45,6 +149,7 @@ const int SDP_Table[513] = { 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) @@ -131,18 +236,19 @@ CFX_DIBitmap* CFX_DIBSource::SwapXY(FX_BOOL bXFlip, } } else { const uint8_t* src_scan = GetScanline(row) + col_start * nBytes; - if (nBytes == 1) + if (nBytes == 1) { for (int col = col_start; col < col_end; col++) { *dest_scan = *src_scan++; dest_scan += dest_step; } - else + } 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; } + } } } } @@ -294,102 +400,7 @@ FX_BOOL CFX_ImageTransformer::Start(const CFX_DIBSource* pSrc, m_Status = 3; return TRUE; } -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; -} + FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { if (m_Status == 1) { if (m_Stretcher.Continue(pPause)) { @@ -422,7 +433,7 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { } int stretch_pitch = m_Storer.GetBitmap()->GetPitch(); CFX_DIBitmap* pTransformed = new CFX_DIBitmap; - FXDIB_Format transformF = _GetTransformedFormat(m_Stretcher.m_pSource); + FXDIB_Format transformF = GetTransformedFormat(m_Stretcher.m_pSource); if (!pTransformed->Create(m_ResultWidth, m_ResultHeight, transformF)) { delete pTransformed; return FALSE; @@ -468,8 +479,8 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { 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); + 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++; } @@ -493,12 +504,11 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { 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); + 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); + bicubic_interpol(stretch_buf_mask, stretch_pitch_mask, + pos_pixel, u_w, v_w, res_x, res_y, 1, 0); } dest_pos_mask++; } @@ -555,8 +565,8 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { 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); + bilinear_interpol(stretch_buf, row_offset_l, row_offset_r, + src_col_l, src_col_r, res_x, res_y, 1, 0); } dest_scan++; } @@ -579,12 +589,10 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { 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); + 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++; } @@ -623,14 +631,15 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { argb[i] = pPal[i]; } } else { - if (m_Storer.GetBitmap()->IsCmykImage()) + if (m_Storer.GetBitmap()->IsCmykImage()) { for (int i = 0; i < 256; i++) { argb[i] = 255 - i; } - else + } else { for (int i = 0; i < 256; i++) { argb[i] = 0xff000000 | (i * 0x010101); } + } } if (!(m_Flags & FXDIB_DOWNSAMPLE) && !(m_Flags & FXDIB_BICUBIC_INTERPOL)) { @@ -659,7 +668,7 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { } 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( + 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) { @@ -691,12 +700,12 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { 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); + 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)]; + 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); @@ -767,15 +776,15 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { } 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); + 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) { @@ -783,7 +792,7 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { dest_pos[1] = r_pos_green_m_r; dest_pos[2] = r_pos_red_y_r; } else { - r_pos_k_r = _bilinear_interpol( + 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 = @@ -791,7 +800,7 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { r_pos_red_y_r, r_pos_k_r)); } } else { - uint8_t r_pos_a_r = _bilinear_interpol( + 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); *(FX_DWORD*)dest_pos = FXARGB_TODIB( @@ -801,7 +810,7 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { } else { r_pos_k_r = 0xff; if (transformF == FXDIB_Cmyka) { - r_pos_k_r = _bilinear_interpol( + 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 = @@ -835,18 +844,18 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { 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); + 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); + 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); + 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); + 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) { @@ -855,16 +864,16 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { 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); + 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 { uint8_t r_pos_a_r = - _bicubic_interpol(stretch_buf, stretch_pitch, pos_pixel, - u_w, v_w, res_x, res_y, Bpp, 3); + 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)); @@ -873,8 +882,8 @@ FX_BOOL CFX_ImageTransformer::Continue(IFX_Pause* pPause) { 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); + 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)); |