diff options
Diffstat (limited to 'core/src/fxge/dib/fx_dib_engine.cpp')
-rw-r--r-- | core/src/fxge/dib/fx_dib_engine.cpp | 917 |
1 files changed, 0 insertions, 917 deletions
diff --git a/core/src/fxge/dib/fx_dib_engine.cpp b/core/src/fxge/dib/fx_dib_engine.cpp deleted file mode 100644 index 322040539e..0000000000 --- a/core/src/fxge/dib/fx_dib_engine.cpp +++ /dev/null @@ -1,917 +0,0 @@ -// 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 <limits.h> - -#include "core/include/fxge/fx_dib.h" -#include "core/include/fxge/fx_ge.h" -#include "core/src/fxge/dib/dib_int.h" - -void CWeightTable::Calc(int dest_len, - int dest_min, - int dest_max, - int src_len, - int src_min, - int src_max, - int flags) { - FX_Free(m_pWeightTables); - m_pWeightTables = NULL; - double scale, base; - scale = (FX_FLOAT)src_len / (FX_FLOAT)dest_len; - if (dest_len < 0) { - base = (FX_FLOAT)(src_len); - } else { - base = 0; - } - int ext_size = flags & FXDIB_BICUBIC_INTERPOL ? 3 : 1; - m_ItemSize = - sizeof(int) * 2 + - (int)(sizeof(int) * (FXSYS_ceil(FXSYS_fabs((FX_FLOAT)scale)) + ext_size)); - m_DestMin = dest_min; - if ((dest_max - dest_min) > (int)((1U << 30) - 4) / m_ItemSize) { - return; - } - m_pWeightTables = - FX_TryAlloc(uint8_t, (dest_max - dest_min) * m_ItemSize + 4); - if (!m_pWeightTables) { - return; - } - if ((flags & FXDIB_NOSMOOTH) != 0 || FXSYS_fabs((FX_FLOAT)scale) < 1.0f) { - for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel++) { - PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); - double src_pos = dest_pixel * scale + scale / 2 + base; - if (flags & FXDIB_INTERPOL) { - pixel_weights.m_SrcStart = - (int)FXSYS_floor((FX_FLOAT)src_pos - 1.0f / 2); - pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos + 1.0f / 2); - if (pixel_weights.m_SrcStart < src_min) { - pixel_weights.m_SrcStart = src_min; - } - if (pixel_weights.m_SrcEnd >= src_max) { - pixel_weights.m_SrcEnd = src_max - 1; - } - if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { - pixel_weights.m_Weights[0] = 65536; - } else { - pixel_weights.m_Weights[1] = FXSYS_round( - (FX_FLOAT)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * - 65536); - pixel_weights.m_Weights[0] = 65536 - pixel_weights.m_Weights[1]; - } - } else if (flags & FXDIB_BICUBIC_INTERPOL) { - pixel_weights.m_SrcStart = - (int)FXSYS_floor((FX_FLOAT)src_pos - 1.0f / 2); - pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos + 1.0f / 2); - int start = pixel_weights.m_SrcStart - 1; - int end = pixel_weights.m_SrcEnd + 1; - if (start < src_min) { - start = src_min; - } - if (end >= src_max) { - end = src_max - 1; - } - if (pixel_weights.m_SrcStart < src_min) { - src_pos += src_min - pixel_weights.m_SrcStart; - pixel_weights.m_SrcStart = src_min; - } - if (pixel_weights.m_SrcEnd >= src_max) { - pixel_weights.m_SrcEnd = src_max - 1; - } - int weight; - weight = FXSYS_round( - (FX_FLOAT)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 256); - if (start == end) { - pixel_weights.m_Weights[0] = - (SDP_Table[256 + weight] + SDP_Table[weight] + - SDP_Table[256 - weight] + SDP_Table[512 - weight]) - << 8; - } else if ((start == pixel_weights.m_SrcStart && - (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd || - end == pixel_weights.m_SrcEnd) && - start < end) || - (start < pixel_weights.m_SrcStart && - pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd && - end == pixel_weights.m_SrcEnd)) { - if (start < pixel_weights.m_SrcStart) { - pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; - pixel_weights.m_Weights[1] = - (SDP_Table[weight] + SDP_Table[256 - weight] + - SDP_Table[512 - weight]) - << 8; - } else { - if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { - pixel_weights.m_Weights[0] = - (SDP_Table[256 + weight] + SDP_Table[weight] + - SDP_Table[256 - weight]) - << 8; - pixel_weights.m_Weights[1] = SDP_Table[512 - weight] << 8; - } else { - pixel_weights.m_Weights[0] = - (SDP_Table[256 + weight] + SDP_Table[weight]) << 8; - pixel_weights.m_Weights[1] = - (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; - } - } - if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { - pixel_weights.m_SrcEnd = end; - } - if (start < pixel_weights.m_SrcStart) { - pixel_weights.m_SrcStart = start; - } - } else if (start == pixel_weights.m_SrcStart && - start < pixel_weights.m_SrcEnd && - pixel_weights.m_SrcEnd < end) { - pixel_weights.m_Weights[0] = - (SDP_Table[256 + weight] + SDP_Table[weight]) << 8; - pixel_weights.m_Weights[1] = SDP_Table[256 - weight] << 8; - pixel_weights.m_Weights[2] = SDP_Table[512 - weight] << 8; - pixel_weights.m_SrcEnd = end; - } else if (start < pixel_weights.m_SrcStart && - pixel_weights.m_SrcStart < pixel_weights.m_SrcEnd && - pixel_weights.m_SrcEnd == end) { - pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; - pixel_weights.m_Weights[1] = SDP_Table[weight] << 8; - pixel_weights.m_Weights[2] = - (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; - pixel_weights.m_SrcStart = start; - } else { - pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; - pixel_weights.m_Weights[1] = SDP_Table[weight] << 8; - pixel_weights.m_Weights[2] = SDP_Table[256 - weight] << 8; - pixel_weights.m_Weights[3] = SDP_Table[512 - weight] << 8; - pixel_weights.m_SrcStart = start; - pixel_weights.m_SrcEnd = end; - } - } else { - pixel_weights.m_SrcStart = pixel_weights.m_SrcEnd = - (int)FXSYS_floor((FX_FLOAT)src_pos); - if (pixel_weights.m_SrcStart < src_min) { - pixel_weights.m_SrcStart = src_min; - } - if (pixel_weights.m_SrcEnd >= src_max) { - pixel_weights.m_SrcEnd = src_max - 1; - } - pixel_weights.m_Weights[0] = 65536; - } - } - return; - } - for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel++) { - PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); - double src_start = dest_pixel * scale + base; - double src_end = src_start + scale; - int start_i, end_i; - if (src_start < src_end) { - start_i = (int)FXSYS_floor((FX_FLOAT)src_start); - end_i = (int)FXSYS_ceil((FX_FLOAT)src_end); - } else { - start_i = (int)FXSYS_floor((FX_FLOAT)src_end); - end_i = (int)FXSYS_ceil((FX_FLOAT)src_start); - } - if (start_i < src_min) { - start_i = src_min; - } - if (end_i >= src_max) { - end_i = src_max - 1; - } - if (start_i > end_i) { - if (start_i >= src_max) { - start_i = src_max - 1; - } - pixel_weights.m_SrcStart = start_i; - pixel_weights.m_SrcEnd = start_i; - continue; - } - pixel_weights.m_SrcStart = start_i; - pixel_weights.m_SrcEnd = end_i; - for (int j = start_i; j <= end_i; j++) { - double dest_start = ((FX_FLOAT)j - base) / scale; - double dest_end = ((FX_FLOAT)(j + 1) - base) / scale; - if (dest_start > dest_end) { - double temp = dest_start; - dest_start = dest_end; - dest_end = temp; - } - double area_start = dest_start > (FX_FLOAT)(dest_pixel) - ? dest_start - : (FX_FLOAT)(dest_pixel); - double area_end = dest_end > (FX_FLOAT)(dest_pixel + 1) - ? (FX_FLOAT)(dest_pixel + 1) - : dest_end; - double weight = area_start >= area_end ? 0.0f : area_end - area_start; - if (weight == 0 && j == end_i) { - pixel_weights.m_SrcEnd--; - break; - } - pixel_weights.m_Weights[j - start_i] = - FXSYS_round((FX_FLOAT)(weight * 65536)); - } - } -} -CStretchEngine::CStretchEngine(IFX_ScanlineComposer* pDestBitmap, - FXDIB_Format dest_format, - int dest_width, - int dest_height, - const FX_RECT& clip_rect, - const CFX_DIBSource* pSrcBitmap, - int flags) { - m_State = 0; - m_DestFormat = dest_format; - m_DestBpp = dest_format & 0xff; - m_SrcBpp = pSrcBitmap->GetFormat() & 0xff; - m_bHasAlpha = pSrcBitmap->GetFormat() & 0x200; - m_pSrcPalette = pSrcBitmap->GetPalette(); - m_pDestBitmap = pDestBitmap; - m_DestWidth = dest_width; - m_DestHeight = dest_height; - m_pInterBuf = NULL; - m_pExtraAlphaBuf = NULL; - m_pDestMaskScanline = NULL; - m_DestClip = clip_rect; - FX_DWORD size = clip_rect.Width(); - if (size && m_DestBpp > (int)(INT_MAX / size)) { - return; - } - size *= m_DestBpp; - if (size > INT_MAX - 31) { - return; - } - size += 31; - size = size / 32 * 4; - m_pDestScanline = FX_TryAlloc(uint8_t, size); - if (!m_pDestScanline) { - return; - } - if (dest_format == FXDIB_Rgb32) { - FXSYS_memset(m_pDestScanline, 255, size); - } - m_InterPitch = (m_DestClip.Width() * m_DestBpp + 31) / 32 * 4; - m_ExtraMaskPitch = (m_DestClip.Width() * 8 + 31) / 32 * 4; - m_pInterBuf = NULL; - m_pSource = pSrcBitmap; - m_SrcWidth = pSrcBitmap->GetWidth(); - m_SrcHeight = pSrcBitmap->GetHeight(); - m_SrcPitch = (m_SrcWidth * m_SrcBpp + 31) / 32 * 4; - if ((flags & FXDIB_NOSMOOTH) == 0) { - FX_BOOL bInterpol = - flags & FXDIB_INTERPOL || flags & FXDIB_BICUBIC_INTERPOL; - if (!bInterpol && FXSYS_abs(dest_width) != 0 && - FXSYS_abs(dest_height) < - m_SrcWidth * m_SrcHeight * 8 / FXSYS_abs(dest_width)) { - flags = FXDIB_INTERPOL; - } - m_Flags = flags; - } else { - m_Flags = FXDIB_NOSMOOTH; - if (flags & FXDIB_DOWNSAMPLE) { - m_Flags |= FXDIB_DOWNSAMPLE; - } - } - double scale_x = (FX_FLOAT)m_SrcWidth / (FX_FLOAT)m_DestWidth; - double scale_y = (FX_FLOAT)m_SrcHeight / (FX_FLOAT)m_DestHeight; - double base_x = m_DestWidth > 0 ? 0.0f : (FX_FLOAT)(m_DestWidth); - double base_y = m_DestHeight > 0 ? 0.0f : (FX_FLOAT)(m_DestHeight); - double src_left = scale_x * ((FX_FLOAT)(clip_rect.left) + base_x); - double src_right = scale_x * ((FX_FLOAT)(clip_rect.right) + base_x); - double src_top = scale_y * ((FX_FLOAT)(clip_rect.top) + base_y); - double src_bottom = scale_y * ((FX_FLOAT)(clip_rect.bottom) + base_y); - if (src_left > src_right) { - double temp = src_left; - src_left = src_right; - src_right = temp; - } - if (src_top > src_bottom) { - double temp = src_top; - src_top = src_bottom; - src_bottom = temp; - } - m_SrcClip.left = (int)FXSYS_floor((FX_FLOAT)src_left); - m_SrcClip.right = (int)FXSYS_ceil((FX_FLOAT)src_right); - m_SrcClip.top = (int)FXSYS_floor((FX_FLOAT)src_top); - m_SrcClip.bottom = (int)FXSYS_ceil((FX_FLOAT)src_bottom); - FX_RECT src_rect(0, 0, m_SrcWidth, m_SrcHeight); - m_SrcClip.Intersect(src_rect); - if (m_SrcBpp == 1) { - if (m_DestBpp == 8) { - m_TransMethod = 1; - } else { - m_TransMethod = 2; - } - } else if (m_SrcBpp == 8) { - if (m_DestBpp == 8) { - if (!m_bHasAlpha) { - m_TransMethod = 3; - } else { - m_TransMethod = 4; - } - } else { - if (!m_bHasAlpha) { - m_TransMethod = 5; - } else { - m_TransMethod = 6; - } - } - } else { - if (!m_bHasAlpha) { - m_TransMethod = 7; - } else { - m_TransMethod = 8; - } - } -} -FX_BOOL CStretchEngine::Continue(IFX_Pause* pPause) { - while (m_State == 1) { - if (ContinueStretchHorz(pPause)) { - return TRUE; - } - m_State = 2; - StretchVert(); - } - return FALSE; -} -CStretchEngine::~CStretchEngine() { - FX_Free(m_pDestScanline); - FX_Free(m_pInterBuf); - FX_Free(m_pExtraAlphaBuf); - FX_Free(m_pDestMaskScanline); -} -FX_BOOL CStretchEngine::StartStretchHorz() { - if (m_DestWidth == 0 || !m_pDestScanline || - m_SrcClip.Height() > (int)((1U << 29) / m_InterPitch) || - m_SrcClip.Height() == 0) { - return FALSE; - } - m_pInterBuf = FX_TryAlloc(unsigned char, m_SrcClip.Height() * m_InterPitch); - if (!m_pInterBuf) { - return FALSE; - } - if (m_pSource && m_bHasAlpha && m_pSource->m_pAlphaMask) { - m_pExtraAlphaBuf = - FX_Alloc2D(unsigned char, m_SrcClip.Height(), m_ExtraMaskPitch); - FX_DWORD size = (m_DestClip.Width() * 8 + 31) / 32 * 4; - m_pDestMaskScanline = FX_TryAlloc(unsigned char, size); - if (!m_pDestMaskScanline) { - return FALSE; - } - } - m_WeightTable.Calc(m_DestWidth, m_DestClip.left, m_DestClip.right, m_SrcWidth, - m_SrcClip.left, m_SrcClip.right, m_Flags); - if (!m_WeightTable.m_pWeightTables) { - return FALSE; - } - m_CurRow = m_SrcClip.top; - m_State = 1; - return TRUE; -} -#define FX_STRECH_PAUSE_ROWS 10 -FX_BOOL CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause) { - if (!m_DestWidth) { - return 0; - } - if (m_pSource->SkipToScanline(m_CurRow, pPause)) { - return TRUE; - } - int Bpp = m_DestBpp / 8; - int rows_to_go = FX_STRECH_PAUSE_ROWS; - for (; m_CurRow < m_SrcClip.bottom; m_CurRow++) { - if (rows_to_go == 0) { - if (pPause && pPause->NeedToPauseNow()) { - return TRUE; - } - rows_to_go = FX_STRECH_PAUSE_ROWS; - } - const uint8_t* src_scan = m_pSource->GetScanline(m_CurRow); - uint8_t* dest_scan = - m_pInterBuf + (m_CurRow - m_SrcClip.top) * m_InterPitch; - const uint8_t* src_scan_mask = NULL; - uint8_t* dest_scan_mask = NULL; - if (m_pExtraAlphaBuf) { - src_scan_mask = m_pSource->m_pAlphaMask->GetScanline(m_CurRow); - dest_scan_mask = - m_pExtraAlphaBuf + (m_CurRow - m_SrcClip.top) * m_ExtraMaskPitch; - } - switch (m_TransMethod) { - case 1: - case 2: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - if (src_scan[j / 8] & (1 << (7 - j % 8))) { - dest_a += pixel_weight * 255; - } - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - *dest_scan++ = (uint8_t)(dest_a >> 16); - } - break; - } - case 3: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - dest_a += pixel_weight * src_scan[j]; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - *dest_scan++ = (uint8_t)(dest_a >> 16); - } - break; - } - case 4: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0, dest_r = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - pixel_weight = pixel_weight * src_scan_mask[j] / 255; - dest_r += pixel_weight * src_scan[j]; - dest_a += pixel_weight; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r = dest_r < 0 ? 0 : dest_r > 16711680 ? 16711680 : dest_r; - dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; - } - *dest_scan++ = (uint8_t)(dest_r >> 16); - *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); - } - break; - } - case 5: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]]; - if (m_DestFormat == FXDIB_Rgb) { - dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 16); - dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 8); - dest_b_c += pixel_weight * (uint8_t)argb_cmyk; - } else { - dest_b_c += pixel_weight * (uint8_t)(argb_cmyk >> 24); - dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 16); - dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 8); - } - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - } - *dest_scan++ = (uint8_t)(dest_b_c >> 16); - *dest_scan++ = (uint8_t)(dest_g_m >> 16); - *dest_scan++ = (uint8_t)(dest_r_y >> 16); - } - break; - } - case 6: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - pixel_weight = pixel_weight * src_scan_mask[j] / 255; - unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]]; - if (m_DestFormat == FXDIB_Rgba) { - dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 16); - dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 8); - dest_b_c += pixel_weight * (uint8_t)argb_cmyk; - } else { - dest_b_c += pixel_weight * (uint8_t)(argb_cmyk >> 24); - dest_g_m += pixel_weight * (uint8_t)(argb_cmyk >> 16); - dest_r_y += pixel_weight * (uint8_t)(argb_cmyk >> 8); - } - dest_a += pixel_weight; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; - } - *dest_scan++ = (uint8_t)(dest_b_c >> 16); - *dest_scan++ = (uint8_t)(dest_g_m >> 16); - *dest_scan++ = (uint8_t)(dest_r_y >> 16); - *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); - } - break; - } - case 7: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - const uint8_t* src_pixel = src_scan + j * Bpp; - dest_b_c += pixel_weight * (*src_pixel++); - dest_g_m += pixel_weight * (*src_pixel++); - dest_r_y += pixel_weight * (*src_pixel); - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - } - *dest_scan++ = (uint8_t)((dest_b_c) >> 16); - *dest_scan++ = (uint8_t)((dest_g_m) >> 16); - *dest_scan++ = (uint8_t)((dest_r_y) >> 16); - dest_scan += Bpp - 3; - } - break; - } - case 8: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); - int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - const uint8_t* src_pixel = src_scan + j * Bpp; - if (m_DestFormat == FXDIB_Argb) { - pixel_weight = pixel_weight * src_pixel[3] / 255; - } else { - pixel_weight = pixel_weight * src_scan_mask[j] / 255; - } - dest_b_c += pixel_weight * (*src_pixel++); - dest_g_m += pixel_weight * (*src_pixel++); - dest_r_y += pixel_weight * (*src_pixel); - dest_a += pixel_weight; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; - } - *dest_scan++ = (uint8_t)((dest_b_c) >> 16); - *dest_scan++ = (uint8_t)((dest_g_m) >> 16); - *dest_scan++ = (uint8_t)((dest_r_y) >> 16); - if (m_DestFormat == FXDIB_Argb) { - *dest_scan = (uint8_t)((dest_a * 255) >> 16); - } - if (dest_scan_mask) { - *dest_scan_mask++ = (uint8_t)((dest_a * 255) >> 16); - } - dest_scan += Bpp - 3; - } - break; - } - } - rows_to_go--; - } - return FALSE; -} -void CStretchEngine::StretchVert() { - if (m_DestHeight == 0) { - return; - } - CWeightTable table; - table.Calc(m_DestHeight, m_DestClip.top, m_DestClip.bottom, m_SrcHeight, - m_SrcClip.top, m_SrcClip.bottom, m_Flags); - if (!table.m_pWeightTables) { - return; - } - int DestBpp = m_DestBpp / 8; - for (int row = m_DestClip.top; row < m_DestClip.bottom; row++) { - unsigned char* dest_scan = m_pDestScanline; - unsigned char* dest_sacn_mask = m_pDestMaskScanline; - PixelWeight* pPixelWeights = table.GetPixelWeight(row); - switch (m_TransMethod) { - case 1: - case 2: - case 3: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - unsigned char* src_scan = - m_pInterBuf + (col - m_DestClip.left) * DestBpp; - int dest_a = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - dest_a += - pixel_weight * src_scan[(j - m_SrcClip.top) * m_InterPitch]; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - *dest_scan = (uint8_t)(dest_a >> 16); - dest_scan += DestBpp; - } - break; - } - case 4: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - unsigned char* src_scan = - m_pInterBuf + (col - m_DestClip.left) * DestBpp; - unsigned char* src_scan_mask = - m_pExtraAlphaBuf + (col - m_DestClip.left); - int dest_a = 0, dest_k = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - dest_k += - pixel_weight * src_scan[(j - m_SrcClip.top) * m_InterPitch]; - dest_a += pixel_weight * - src_scan_mask[(j - m_SrcClip.top) * m_ExtraMaskPitch]; - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_k = dest_k < 0 ? 0 : dest_k > 16711680 ? 16711680 : dest_k; - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - *dest_scan = (uint8_t)(dest_k >> 16); - dest_scan += DestBpp; - *dest_sacn_mask++ = (uint8_t)(dest_a >> 16); - } - break; - } - case 5: - case 7: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - unsigned char* src_scan = - m_pInterBuf + (col - m_DestClip.left) * DestBpp; - int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - const uint8_t* src_pixel = - src_scan + (j - m_SrcClip.top) * m_InterPitch; - dest_b_c += pixel_weight * (*src_pixel++); - dest_g_m += pixel_weight * (*src_pixel++); - dest_r_y += pixel_weight * (*src_pixel); - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - } - dest_scan[0] = (uint8_t)((dest_b_c) >> 16); - dest_scan[1] = (uint8_t)((dest_g_m) >> 16); - dest_scan[2] = (uint8_t)((dest_r_y) >> 16); - dest_scan += DestBpp; - } - break; - } - case 6: - case 8: { - for (int col = m_DestClip.left; col < m_DestClip.right; col++) { - unsigned char* src_scan = - m_pInterBuf + (col - m_DestClip.left) * DestBpp; - unsigned char* src_scan_mask = NULL; - if (m_DestFormat != FXDIB_Argb) { - src_scan_mask = m_pExtraAlphaBuf + (col - m_DestClip.left); - } - int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; - for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; - j++) { - int pixel_weight = - pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; - const uint8_t* src_pixel = - src_scan + (j - m_SrcClip.top) * m_InterPitch; - int mask_v = 255; - if (src_scan_mask) { - mask_v = src_scan_mask[(j - m_SrcClip.top) * m_ExtraMaskPitch]; - } - dest_b_c += pixel_weight * (*src_pixel++); - dest_g_m += pixel_weight * (*src_pixel++); - dest_r_y += pixel_weight * (*src_pixel); - if (m_DestFormat == FXDIB_Argb) { - dest_a += pixel_weight * (*(src_pixel + 1)); - } else { - dest_a += pixel_weight * mask_v; - } - } - if (m_Flags & FXDIB_BICUBIC_INTERPOL) { - dest_r_y = - dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; - dest_g_m = - dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; - dest_b_c = - dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; - dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; - } - if (dest_a) { - int r = ((FX_DWORD)dest_r_y) * 255 / dest_a; - int g = ((FX_DWORD)dest_g_m) * 255 / dest_a; - int b = ((FX_DWORD)dest_b_c) * 255 / dest_a; - dest_scan[0] = b > 255 ? 255 : b < 0 ? 0 : b; - dest_scan[1] = g > 255 ? 255 : g < 0 ? 0 : g; - dest_scan[2] = r > 255 ? 255 : r < 0 ? 0 : r; - } - if (m_DestFormat == FXDIB_Argb) { - dest_scan[3] = (uint8_t)((dest_a) >> 16); - } else { - *dest_sacn_mask = (uint8_t)((dest_a) >> 16); - } - dest_scan += DestBpp; - if (dest_sacn_mask) { - dest_sacn_mask++; - } - } - break; - } - } - m_pDestBitmap->ComposeScanline(row - m_DestClip.top, m_pDestScanline, - m_pDestMaskScanline); - } -} -CFX_ImageStretcher::CFX_ImageStretcher() { - m_pScanline = NULL; - m_pStretchEngine = NULL; - m_pMaskScanline = NULL; -} -CFX_ImageStretcher::~CFX_ImageStretcher() { - FX_Free(m_pScanline); - delete m_pStretchEngine; - FX_Free(m_pMaskScanline); -} -FXDIB_Format _GetStretchedFormat(const CFX_DIBSource* pSrc) { - FXDIB_Format format = pSrc->GetFormat(); - if (format == FXDIB_1bppMask) { - format = FXDIB_8bppMask; - } else if (format == FXDIB_1bppRgb) { - format = FXDIB_8bppRgb; - } else if (format == FXDIB_8bppRgb) { - if (pSrc->GetPalette()) { - format = FXDIB_Rgb; - } - } - return format; -} -FX_BOOL CFX_ImageStretcher::Start(IFX_ScanlineComposer* pDest, - const CFX_DIBSource* pSource, - int dest_width, - int dest_height, - const FX_RECT& rect, - FX_DWORD flags) { - m_DestFormat = _GetStretchedFormat(pSource); - m_DestBPP = m_DestFormat & 0xff; - m_pDest = pDest; - m_pSource = pSource; - m_DestWidth = dest_width; - m_DestHeight = dest_height; - m_ClipRect = rect; - m_Flags = flags; - if (pSource->GetFormat() == FXDIB_1bppRgb && pSource->GetPalette()) { - FX_ARGB pal[256]; - int a0, r0, g0, b0, a1, r1, g1, b1; - ArgbDecode(pSource->GetPaletteEntry(0), a0, r0, g0, b0); - ArgbDecode(pSource->GetPaletteEntry(1), a1, r1, g1, b1); - for (int i = 0; i < 256; i++) { - int a = a0 + (a1 - a0) * i / 255; - int r = r0 + (r1 - r0) * i / 255; - int g = g0 + (g1 - g0) * i / 255; - int b = b0 + (b1 - b0) * i / 255; - pal[i] = ArgbEncode(a, r, g, b); - } - if (!pDest->SetInfo(rect.Width(), rect.Height(), m_DestFormat, pal)) { - return FALSE; - } - } else if (pSource->GetFormat() == FXDIB_1bppCmyk && pSource->GetPalette()) { - FX_CMYK pal[256]; - int c0, m0, y0, k0, c1, m1, y1, k1; - CmykDecode(pSource->GetPaletteEntry(0), c0, m0, y0, k0); - CmykDecode(pSource->GetPaletteEntry(1), c1, m1, y1, k1); - for (int i = 0; i < 256; i++) { - int c = c0 + (c1 - c0) * i / 255; - int m = m0 + (m1 - m0) * i / 255; - int y = y0 + (y1 - y0) * i / 255; - int k = k0 + (k1 - k0) * i / 255; - pal[i] = CmykEncode(c, m, y, k); - } - if (!pDest->SetInfo(rect.Width(), rect.Height(), m_DestFormat, pal)) { - return FALSE; - } - } else if (!pDest->SetInfo(rect.Width(), rect.Height(), m_DestFormat, NULL)) { - return FALSE; - } - if (flags & FXDIB_DOWNSAMPLE) { - return StartQuickStretch(); - } - return StartStretch(); -} -FX_BOOL CFX_ImageStretcher::Continue(IFX_Pause* pPause) { - if (m_Flags & FXDIB_DOWNSAMPLE) { - return ContinueQuickStretch(pPause); - } - return ContinueStretch(pPause); -} -#define MAX_PROGRESSIVE_STRETCH_PIXELS 1000000 -FX_BOOL CFX_ImageStretcher::StartStretch() { - m_pStretchEngine = - new CStretchEngine(m_pDest, m_DestFormat, m_DestWidth, m_DestHeight, - m_ClipRect, m_pSource, m_Flags); - m_pStretchEngine->StartStretchHorz(); - if (m_pSource->GetWidth() * m_pSource->GetHeight() < - MAX_PROGRESSIVE_STRETCH_PIXELS) { - m_pStretchEngine->Continue(NULL); - return FALSE; - } - return TRUE; -} -FX_BOOL CFX_ImageStretcher::ContinueStretch(IFX_Pause* pPause) { - return m_pStretchEngine && m_pStretchEngine->Continue(pPause); -} -FX_BOOL CFX_ImageStretcher::StartQuickStretch() { - m_bFlipX = FALSE; - m_bFlipY = FALSE; - if (m_DestWidth < 0) { - m_bFlipX = TRUE; - m_DestWidth = -m_DestWidth; - } - if (m_DestHeight < 0) { - m_bFlipY = TRUE; - m_DestHeight = -m_DestHeight; - } - m_LineIndex = 0; - FX_DWORD size = m_ClipRect.Width(); - if (size && m_DestBPP > (int)(INT_MAX / size)) { - return FALSE; - } - size *= m_DestBPP; - m_pScanline = FX_Alloc(uint8_t, (size / 8 + 3) / 4 * 4); - if (m_pSource->m_pAlphaMask) { - m_pMaskScanline = FX_Alloc(uint8_t, (m_ClipRect.Width() + 3) / 4 * 4); - } - if (m_pSource->GetWidth() * m_pSource->GetHeight() < - MAX_PROGRESSIVE_STRETCH_PIXELS) { - ContinueQuickStretch(NULL); - return FALSE; - } - return TRUE; -} -FX_BOOL CFX_ImageStretcher::ContinueQuickStretch(IFX_Pause* pPause) { - if (!m_pScanline) { - return FALSE; - } - int result_width = m_ClipRect.Width(), result_height = m_ClipRect.Height(); - int src_height = m_pSource->GetHeight(); - for (; m_LineIndex < result_height; m_LineIndex++) { - int dest_y, src_y; - if (m_bFlipY) { - dest_y = result_height - m_LineIndex - 1; - src_y = (m_DestHeight - (dest_y + m_ClipRect.top) - 1) * src_height / - m_DestHeight; - } else { - dest_y = m_LineIndex; - src_y = (dest_y + m_ClipRect.top) * src_height / m_DestHeight; - } - if (src_y >= src_height) { - src_y = src_height - 1; - } - if (src_y < 0) { - src_y = 0; - } - if (m_pSource->SkipToScanline(src_y, pPause)) { - return TRUE; - } - m_pSource->DownSampleScanline(src_y, m_pScanline, m_DestBPP, m_DestWidth, - m_bFlipX, m_ClipRect.left, result_width); - if (m_pMaskScanline) { - m_pSource->m_pAlphaMask->DownSampleScanline( - src_y, m_pMaskScanline, 1, m_DestWidth, m_bFlipX, m_ClipRect.left, - result_width); - } - m_pDest->ComposeScanline(dest_y, m_pScanline, m_pMaskScanline); - } - return FALSE; -} |