1ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// Copyright 2014 PDFium Authors. All rights reserved. 2ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// Use of this source code is governed by a BSD-style license that can be 3ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// found in the LICENSE file. 4ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 5ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 7ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "../../../include/fxge/fx_dib.h" 8ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "../../../include/fxge/fx_ge.h" 9ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include "dib_int.h" 10ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#include <limits.h> 11ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovextern int SDP_Table[513]; 12ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid CWeightTable::Calc(int dest_len, int dest_min, int dest_max, int src_len, int src_min, int src_max, int flags) 13ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 14ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pWeightTables) { 15ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_Free(m_pWeightTables); 16ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pWeightTables = NULL; 17ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 18ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double scale, base; 19ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov scale = FXSYS_Div((FX_FLOAT)(src_len), (FX_FLOAT)(dest_len)); 20ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (dest_len < 0) { 21ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov base = (FX_FLOAT)(src_len); 22ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 23ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov base = 0; 24ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 25ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int ext_size = flags & FXDIB_BICUBIC_INTERPOL ? 3 : 1; 26ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_ItemSize = sizeof(int) * 2 + (int)(sizeof(int) * (FXSYS_ceil(FXSYS_fabs((FX_FLOAT)scale)) + ext_size)); 27ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestMin = dest_min; 28ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if ((dest_max - dest_min) > (int)((1U << 30) - 4) / m_ItemSize) { 29ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 30ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 31ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pWeightTables = FX_AllocNL(FX_BYTE, (dest_max - dest_min) * m_ItemSize + 4); 32ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pWeightTables == NULL) { 33ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 34ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 35ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FXSYS_memset32(m_pWeightTables, 0, sizeof(FX_BYTE) * ((dest_max - dest_min)*m_ItemSize + 4)); 36ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if ((flags & FXDIB_NOSMOOTH) != 0 || FXSYS_fabs((FX_FLOAT)scale) < 1.0f) { 37ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel ++) { 38ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); 39ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double src_pos = dest_pixel * scale + scale / 2 + base; 40ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (flags & FXDIB_INTERPOL) { 41ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = (int)FXSYS_floor((FX_FLOAT)src_pos - 1.0f / 2); 42ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos + 1.0f / 2); 43ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcStart < src_min) { 44ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = src_min; 45ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 46ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcEnd >= src_max) { 47ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = src_max - 1; 48ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 49ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { 50ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = 65536; 51ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 52ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[1] = FXSYS_round((FX_FLOAT)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 65536); 53ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = 65536 - pixel_weights.m_Weights[1]; 54ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 55ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if (flags & FXDIB_BICUBIC_INTERPOL) { 56ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = (int)FXSYS_floor((FX_FLOAT)src_pos - 1.0f / 2); 57ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos + 1.0f / 2); 58ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int start = pixel_weights.m_SrcStart - 1; 59ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int end = pixel_weights.m_SrcEnd + 1; 60ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (start < src_min) { 61ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov start = src_min; 62ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 63ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (end >= src_max) { 64ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov end = src_max - 1; 65ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 66ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcStart < src_min) { 67ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_pos += src_min - pixel_weights.m_SrcStart; 68ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = src_min; 69ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 70ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcEnd >= src_max) { 71ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = src_max - 1; 72ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 73ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int weight; 74ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov weight = FXSYS_round((FX_FLOAT)(src_pos - pixel_weights.m_SrcStart - 1.0f / 2) * 256); 75ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (start == end) { 76ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = (SDP_Table[256 + weight] + SDP_Table[weight] + SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; 77ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if ((start == pixel_weights.m_SrcStart && (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd || 78ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov 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)) { 79ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (start < pixel_weights.m_SrcStart) { 80ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; 81ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[1] = (SDP_Table[weight] + SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; 82ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 83ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { 84ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = (SDP_Table[256 + weight] + SDP_Table[weight] + SDP_Table[256 - weight]) << 8; 85ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[1] = SDP_Table[512 - weight] << 8; 86ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 87ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = (SDP_Table[256 + weight] + SDP_Table[weight]) << 8; 88ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[1] = (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; 89ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 90ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 91ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcStart == pixel_weights.m_SrcEnd) { 92ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = end; 93ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 94ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (start < pixel_weights.m_SrcStart) { 95ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = start; 96ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 97ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if (start == pixel_weights.m_SrcStart && 98ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov start < pixel_weights.m_SrcEnd && 99ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd < end) { 100ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = (SDP_Table[256 + weight] + SDP_Table[weight]) << 8; 101ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[1] = SDP_Table[256 - weight] << 8; 102ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[2] = SDP_Table[512 - weight] << 8; 103ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = end; 104ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if (start < pixel_weights.m_SrcStart && 105ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart < pixel_weights.m_SrcEnd && 106ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd == end) { 107ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; 108ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[1] = SDP_Table[weight] << 8; 109ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[2] = (SDP_Table[256 - weight] + SDP_Table[512 - weight]) << 8; 110ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = start; 111ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 112ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = SDP_Table[256 + weight] << 8; 113ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[1] = SDP_Table[weight] << 8; 114ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[2] = SDP_Table[256 - weight] << 8; 115ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[3] = SDP_Table[512 - weight] << 8; 116ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = start; 117ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = end; 118ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 119ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 120ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = pixel_weights.m_SrcEnd = (int)FXSYS_floor((FX_FLOAT)src_pos); 121ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcStart < src_min) { 122ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = src_min; 123ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 124ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pixel_weights.m_SrcEnd >= src_max) { 125ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = src_max - 1; 126ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 127ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[0] = 65536; 128ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 129ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 130ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 131ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 132ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int dest_pixel = dest_min; dest_pixel < dest_max; dest_pixel ++) { 133ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight& pixel_weights = *GetPixelWeight(dest_pixel); 134ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double src_start = dest_pixel * scale + base; 135ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double src_end = src_start + scale; 136ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int start_i, end_i; 137ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (src_start < src_end) { 138ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov start_i = (int)FXSYS_floor((FX_FLOAT)src_start); 139ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov end_i = (int)FXSYS_ceil((FX_FLOAT)src_end); 140ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 141ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov start_i = (int)FXSYS_floor((FX_FLOAT)src_end); 142ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov end_i = (int)FXSYS_ceil((FX_FLOAT)src_start); 143ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 144ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (start_i < src_min) { 145ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov start_i = src_min; 146ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 147ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (end_i >= src_max) { 148ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov end_i = src_max - 1; 149ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 150ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (start_i > end_i) { 151ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (start_i >= src_max) { 152ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov start_i = src_max - 1; 153ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 154ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = start_i; 155ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = start_i; 156ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov continue; 157ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 158ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcStart = start_i; 159ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd = end_i; 160ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = start_i; j <= end_i; j ++) { 161ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double dest_start = FXSYS_Div((FX_FLOAT)(j) - base, scale); 162ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double dest_end = FXSYS_Div((FX_FLOAT)(j + 1) - base, scale); 163ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (dest_start > dest_end) { 164ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double temp = dest_start; 165ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_start = dest_end; 166ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_end = temp; 167ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 168ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double area_start = dest_start > (FX_FLOAT)(dest_pixel) ? dest_start : (FX_FLOAT)(dest_pixel); 169ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double area_end = dest_end > (FX_FLOAT)(dest_pixel + 1) ? (FX_FLOAT)(dest_pixel + 1) : dest_end; 170ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double weight = area_start >= area_end ? 0.0f : area_end - area_start; 171ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (weight == 0 && j == end_i) { 172ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_SrcEnd --; 173ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 174ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 175ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weights.m_Weights[j - start_i] = FXSYS_round((FX_FLOAT)(weight * 65536)); 176ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 177ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 178ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 179ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovCStretchEngine::CStretchEngine(IFX_ScanlineComposer* pDestBitmap, FXDIB_Format dest_format, 180ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_width, int dest_height, const FX_RECT& clip_rect, 181ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const CFX_DIBSource* pSrcBitmap, int flags) 182ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 183ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_State = 0; 184ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestFormat = dest_format; 185ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestBpp = dest_format & 0xff; 186ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcBpp = pSrcBitmap->GetFormat() & 0xff; 187ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_bHasAlpha = pSrcBitmap->GetFormat() & 0x200; 188ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pSrcPalette = pSrcBitmap->GetPalette(); 189ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pDestBitmap = pDestBitmap; 190ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestWidth = dest_width; 191ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestHeight = dest_height; 192ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pInterBuf = NULL; 193ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pExtraAlphaBuf = NULL; 194ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pDestMaskScanline = NULL; 195ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestClip = clip_rect; 196ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_DWORD size = clip_rect.Width(); 197ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (size && m_DestBpp > (int)(INT_MAX / size)) { 198ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 199ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 200ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov size *= m_DestBpp; 201ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (size > INT_MAX - 31) { 202ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 203ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 204ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov size += 31; 205ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov size = size / 32 * 4; 206ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pDestScanline = FX_AllocNL(FX_BYTE, size); 207ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pDestScanline == NULL) { 208ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 209ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 210ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FXSYS_memset32(m_pDestScanline, 0, sizeof(FX_BYTE) * size); 211ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (dest_format == FXDIB_Rgb32) { 212ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FXSYS_memset8(m_pDestScanline, 255, size); 213ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 214ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_InterPitch = (m_DestClip.Width() * m_DestBpp + 31) / 32 * 4; 215ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_ExtraMaskPitch = (m_DestClip.Width() * 8 + 31) / 32 * 4; 216ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pInterBuf = NULL; 217ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pSource = pSrcBitmap; 218ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcWidth = pSrcBitmap->GetWidth(); 219ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcHeight = pSrcBitmap->GetHeight(); 220ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcPitch = (m_SrcWidth * m_SrcBpp + 31) / 32 * 4; 221ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if ((flags & FXDIB_NOSMOOTH) == 0) { 222ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_BOOL bInterpol = flags & FXDIB_INTERPOL || flags & FXDIB_BICUBIC_INTERPOL; 223ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!bInterpol && FXSYS_abs(dest_width) != 0 && FXSYS_abs(dest_height) < m_SrcWidth * m_SrcHeight * 8 / FXSYS_abs(dest_width)) { 224ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov flags = FXDIB_INTERPOL; 225ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 226ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_Flags = flags; 227ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 228ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_Flags = FXDIB_NOSMOOTH; 229ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (flags & FXDIB_DOWNSAMPLE) { 230ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_Flags |= FXDIB_DOWNSAMPLE; 231ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 232ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 233ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double scale_x = FXSYS_Div((FX_FLOAT)(m_SrcWidth), (FX_FLOAT)(m_DestWidth)); 234ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double scale_y = FXSYS_Div((FX_FLOAT)(m_SrcHeight), (FX_FLOAT)(m_DestHeight)); 235ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double base_x = m_DestWidth > 0 ? 0.0f : (FX_FLOAT)(m_DestWidth); 236ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double base_y = m_DestHeight > 0 ? 0.0f : (FX_FLOAT)(m_DestHeight); 237ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double src_left = FXSYS_Mul(scale_x, (FX_FLOAT)(clip_rect.left) + base_x); 238ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double src_right = FXSYS_Mul(scale_x, (FX_FLOAT)(clip_rect.right) + base_x); 239ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double src_top = FXSYS_Mul(scale_y, (FX_FLOAT)(clip_rect.top) + base_y); 240ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double src_bottom = FXSYS_Mul(scale_y, (FX_FLOAT)(clip_rect.bottom) + base_y); 241ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (src_left > src_right) { 242ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double temp = src_left; 243ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_left = src_right; 244ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_right = temp; 245ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 246ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (src_top > src_bottom) { 247ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov double temp = src_top; 248ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_top = src_bottom; 249ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_bottom = temp; 250ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 251ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcClip.left = (int)FXSYS_floor((FX_FLOAT)src_left); 252ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcClip.right = (int)FXSYS_ceil((FX_FLOAT)src_right); 253ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcClip.top = (int)FXSYS_floor((FX_FLOAT)src_top); 254ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcClip.bottom = (int)FXSYS_ceil((FX_FLOAT)src_bottom); 255ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_RECT src_rect(0, 0, m_SrcWidth, m_SrcHeight); 256ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_SrcClip.Intersect(src_rect); 257ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_SrcBpp == 1) { 258ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestBpp == 8) { 259ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_TransMethod = 1; 260ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 261ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_TransMethod = 2; 262ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 263ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if (m_SrcBpp == 8) { 264ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestBpp == 8) { 265ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_bHasAlpha) { 266ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_TransMethod = 3; 267ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 268ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_TransMethod = 4; 269ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 270ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 271ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_bHasAlpha) { 272ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_TransMethod = 5; 273ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 274ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_TransMethod = 6; 275ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 276ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 277ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 278ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_bHasAlpha) { 279ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_TransMethod = 7; 280ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 281ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_TransMethod = 8; 282ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 283ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 284ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 285ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CStretchEngine::Continue(IFX_Pause* pPause) 286ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 287ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov while (m_State == 1) { 288ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (ContinueStretchHorz(pPause)) { 289ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return TRUE; 290ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 291ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_State = 2; 292ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov StretchVert(); 293ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 294ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 295ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 296ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovCStretchEngine::~CStretchEngine() 297ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 298ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pDestScanline) { 299ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_Free(m_pDestScanline); 300ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 301ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pInterBuf) { 302ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_Free(m_pInterBuf); 303ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 304ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pExtraAlphaBuf) { 305ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_Free(m_pExtraAlphaBuf); 306ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 307ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pDestMaskScanline) { 308ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_Free(m_pDestMaskScanline); 309ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 310ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 311ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CStretchEngine::StartStretchHorz() 312ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 313ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestWidth == 0 || m_pDestScanline == NULL || m_SrcClip.Height() > (int)((1U << 29) / m_InterPitch) || m_SrcClip.Height() == 0) { 314ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 315ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 316ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifndef _FPDFAPI_MINI_ 317ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pInterBuf = FX_AllocNL(unsigned char, m_SrcClip.Height() * m_InterPitch); 318ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#else 319ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pInterBuf = FX_Alloc(unsigned char, m_SrcClip.Height() * m_InterPitch); 320ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 321ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pInterBuf == NULL) { 322ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 323ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 324ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pSource && m_bHasAlpha && m_pSource->m_pAlphaMask) { 325ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pExtraAlphaBuf = FX_Alloc(unsigned char, m_SrcClip.Height() * m_ExtraMaskPitch); 326ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_pExtraAlphaBuf) { 327ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 328ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 329ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_DWORD size = (m_DestClip.Width() * 8 + 31) / 32 * 4; 330ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pDestMaskScanline = FX_AllocNL(unsigned char, size); 331ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_pDestMaskScanline) { 332ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 333ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 334ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 335ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_WeightTable.Calc(m_DestWidth, m_DestClip.left, m_DestClip.right, m_SrcWidth, m_SrcClip.left, m_SrcClip.right, m_Flags); 336ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_WeightTable.m_pWeightTables == NULL) { 337ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 338ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 339ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_CurRow = m_SrcClip.top; 340ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_State = 1; 341ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return TRUE; 342ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 343ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define FX_STRECH_PAUSE_ROWS 10 344ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CStretchEngine::ContinueStretchHorz(IFX_Pause* pPause) 345ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 346ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_DestWidth) { 347ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return 0; 348ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 349ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pSource->SkipToScanline(m_CurRow, pPause)) { 350ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return TRUE; 351ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 352ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int Bpp = m_DestBpp / 8; 353ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int rows_to_go = FX_STRECH_PAUSE_ROWS; 354ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (; m_CurRow < m_SrcClip.bottom; m_CurRow ++) { 355ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (rows_to_go == 0) { 356ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pPause && pPause->NeedToPauseNow()) { 357ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return TRUE; 358ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 359ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov rows_to_go = FX_STRECH_PAUSE_ROWS; 360ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 361ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 362ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPCBYTE src_scan = m_pSource->GetScanline(m_CurRow); 363ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPBYTE dest_scan = m_pInterBuf + (m_CurRow - m_SrcClip.top) * m_InterPitch; 364ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPCBYTE src_scan_mask = NULL; 365ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPBYTE dest_scan_mask = NULL; 366ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pExtraAlphaBuf) { 367ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_scan_mask = m_pSource->m_pAlphaMask->GetScanline(m_CurRow); 368ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan_mask = m_pExtraAlphaBuf + (m_CurRow - m_SrcClip.top) * m_ExtraMaskPitch; 369ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 370ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov switch (m_TransMethod) { 371ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 1: 372ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 2: { 373ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 374ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); 375ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_a = 0; 376ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 377ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 378ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (src_scan[j / 8] & (1 << (7 - j % 8))) { 379ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight * 255; 380ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 381ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 382ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 383ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; 384ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 385ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_a >> 16); 386ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 387ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 388ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 389ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 3: { 390ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 391ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); 392ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_a = 0; 393ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 394ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 395ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight * src_scan[j]; 396ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 397ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 398ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; 399ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 400ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_a >> 16); 401ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 402ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 403ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 404ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 4: { 405ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 406ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); 407ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_a = 0, dest_r = 0; 408ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 409ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 410ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weight = pixel_weight * src_scan_mask[j] / 255; 411ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r += pixel_weight * src_scan[j]; 412ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight; 413ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 414ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 415ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r = dest_r < 0 ? 0 : dest_r > 16711680 ? 16711680 : dest_r; 416ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; 417ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 418ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_r >> 16); 419ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan_mask++ = (FX_BYTE)((dest_a * 255) >> 16); 420ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 421ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 422ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 423ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 5: { 424ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 425ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); 426ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0; 427ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 428ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 429ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]]; 430ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestFormat == FXDIB_Rgb) { 431ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y += pixel_weight * (FX_BYTE)(argb_cmyk >> 16); 432ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m += pixel_weight * (FX_BYTE)(argb_cmyk >> 8); 433ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c += pixel_weight * (FX_BYTE)argb_cmyk; 434ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 435ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c += pixel_weight * (FX_BYTE)(argb_cmyk >> 24); 436ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m += pixel_weight * (FX_BYTE)(argb_cmyk >> 16); 437ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y += pixel_weight * (FX_BYTE)(argb_cmyk >> 8); 438ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 439ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 440ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 441ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y = dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; 442ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m = dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; 443ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c = dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; 444ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 445ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_b_c >> 16); 446ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_g_m >> 16); 447ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_r_y >> 16); 448ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 449ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 450ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 451ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 6: { 452ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 453ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); 454ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0; 455ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 456ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 457ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weight = pixel_weight * src_scan_mask[j] / 255; 458ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned long argb_cmyk = m_pSrcPalette[src_scan[j]]; 459ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestFormat == FXDIB_Rgba) { 460ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y += pixel_weight * (FX_BYTE)(argb_cmyk >> 16); 461ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m += pixel_weight * (FX_BYTE)(argb_cmyk >> 8); 462ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c += pixel_weight * (FX_BYTE)argb_cmyk; 463ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 464ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c += pixel_weight * (FX_BYTE)(argb_cmyk >> 24); 465ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m += pixel_weight * (FX_BYTE)(argb_cmyk >> 16); 466ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y += pixel_weight * (FX_BYTE)(argb_cmyk >> 8); 467ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 468ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight; 469ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 470ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 471ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_k = dest_k < 0 ? 0 : dest_k > 16711680 ? 16711680 : dest_k; 472ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c = dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; 473ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m = dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; 474ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y = dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; 475ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; 476ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 477ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_b_c >> 16); 478ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_g_m >> 16); 479ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)(dest_r_y >> 16); 480ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan_mask++ = (FX_BYTE)((dest_a * 255) >> 16); 481ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 482ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 483ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 484ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 7: { 485ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 486ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); 487ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0; 488ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 489ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 490ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPCBYTE src_pixel = src_scan + j * Bpp; 491ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c += pixel_weight * (*src_pixel++); 492ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m += pixel_weight * (*src_pixel++); 493ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y += pixel_weight * (*src_pixel); 494ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 495ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 496ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c = dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; 497ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m = dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; 498ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y = dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; 499ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 500ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)((dest_b_c) >> 16); 501ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)((dest_g_m) >> 16); 502ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)((dest_r_y) >> 16); 503ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan += Bpp - 3; 504ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 505ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 506ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 507ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 8: { 508ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 509ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight* pPixelWeights = m_WeightTable.GetPixelWeight(col); 510ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_a = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0; 511ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 512ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 513ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPCBYTE src_pixel = src_scan + j * Bpp; 514ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestFormat == FXDIB_Argb) { 515ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weight = pixel_weight * src_pixel[3] / 255; 516ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 517ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pixel_weight = pixel_weight * src_scan_mask[j] / 255; 518ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 519ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c += pixel_weight * (*src_pixel++); 520ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m += pixel_weight * (*src_pixel++); 521ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y += pixel_weight * (*src_pixel); 522ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight; 523ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 524ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 525ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y = dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; 526ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m = dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; 527ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c = dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; 528ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a = dest_a < 0 ? 0 : dest_a > 65536 ? 65536 : dest_a; 529ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 530ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)((dest_b_c) >> 16); 531ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)((dest_g_m) >> 16); 532ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan++ = (FX_BYTE)((dest_r_y) >> 16); 533ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestFormat == FXDIB_Argb) { 534ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan = (FX_BYTE)((dest_a * 255) >> 16); 535ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 536ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (dest_scan_mask) { 537ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan_mask++ = (FX_BYTE)((dest_a * 255) >> 16); 538ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 539ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan += Bpp - 3; 540ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 541ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 542ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 543ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 544ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov rows_to_go --; 545ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 546ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 547ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 548ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganovvoid CStretchEngine::StretchVert() 549ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 550ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestHeight == 0) { 551ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 552ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 553ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CWeightTable table; 554ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov table.Calc(m_DestHeight, m_DestClip.top, m_DestClip.bottom, m_SrcHeight, m_SrcClip.top, m_SrcClip.bottom, m_Flags); 555ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (table.m_pWeightTables == NULL) { 556ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return; 557ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 558ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int DestBpp = m_DestBpp / 8; 559ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int row = m_DestClip.top; row < m_DestClip.bottom; row ++) { 560ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char* dest_scan = m_pDestScanline; 561ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char* dest_sacn_mask = m_pDestMaskScanline; 562ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov PixelWeight* pPixelWeights = table.GetPixelWeight(row); 563ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov switch(m_TransMethod) { 564ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 1: 565ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 2: 566ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 3: { 567ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 568ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char* src_scan = m_pInterBuf + (col - m_DestClip.left) * DestBpp; 569ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_a = 0; 570ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 571ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 572ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight * src_scan[(j - m_SrcClip.top) * m_InterPitch]; 573ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 574ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 575ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; 576ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 577ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan = (FX_BYTE)(dest_a >> 16); 578ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan += DestBpp; 579ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 580ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 581ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 582ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 4: { 583ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 584ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char* src_scan = m_pInterBuf + (col - m_DestClip.left) * DestBpp; 585ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char* src_scan_mask = m_pExtraAlphaBuf + (col - m_DestClip.left); 586ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_a = 0, dest_k = 0; 587ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 588ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 589ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_k += pixel_weight * src_scan[(j - m_SrcClip.top) * m_InterPitch]; 590ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight * src_scan_mask[(j - m_SrcClip.top) * m_ExtraMaskPitch]; 591ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 592ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 593ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_k = dest_k < 0 ? 0 : dest_k > 16711680 ? 16711680 : dest_k; 594ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; 595ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 596ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_scan = (FX_BYTE)(dest_k >> 16); 597ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan += DestBpp; 598ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_sacn_mask++ = (FX_BYTE)(dest_a >> 16); 599ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 600ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 601ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 602ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 5: 603ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 7: { 604ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 605ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char* src_scan = m_pInterBuf + (col - m_DestClip.left) * DestBpp; 606ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_r_y = 0, dest_g_m = 0, dest_b_c = 0, dest_k = 0; 607ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 608ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 609ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPCBYTE src_pixel = src_scan + (j - m_SrcClip.top) * m_InterPitch; 610ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c += pixel_weight * (*src_pixel++); 611ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m += pixel_weight * (*src_pixel++); 612ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y += pixel_weight * (*src_pixel); 613ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 614ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 615ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y = dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; 616ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m = dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; 617ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c = dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; 618ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 619ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan[0] = (FX_BYTE)((dest_b_c) >> 16); 620ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan[1] = (FX_BYTE)((dest_g_m) >> 16); 621ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan[2] = (FX_BYTE)((dest_r_y) >> 16); 622ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan += DestBpp; 623ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 624ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 625ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 626ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 6: 627ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov case 8: { 628ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int col = m_DestClip.left; col < m_DestClip.right; col ++) { 629ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char* src_scan = m_pInterBuf + (col - m_DestClip.left) * DestBpp; 630ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov unsigned char* src_scan_mask = NULL; 631ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestFormat != FXDIB_Argb) { 632ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_scan_mask = m_pExtraAlphaBuf + (col - m_DestClip.left); 633ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 634ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_a = 0, dest_k = 0, dest_r_y = 0, dest_g_m = 0, dest_b_c = 0; 635ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int j = pPixelWeights->m_SrcStart; j <= pPixelWeights->m_SrcEnd; j ++) { 636ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int pixel_weight = pPixelWeights->m_Weights[j - pPixelWeights->m_SrcStart]; 637ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPCBYTE src_pixel = src_scan + (j - m_SrcClip.top) * m_InterPitch; 638ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int mask_v = 255; 639ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (src_scan_mask) { 640ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov mask_v = src_scan_mask[(j - m_SrcClip.top) * m_ExtraMaskPitch]; 641ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 642ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c += pixel_weight * (*src_pixel++); 643ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m += pixel_weight * (*src_pixel++); 644ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y += pixel_weight * (*src_pixel); 645ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestFormat == FXDIB_Argb) { 646ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight * (*(src_pixel + 1)); 647ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 648ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a += pixel_weight * mask_v; 649ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 650ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 651ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_BICUBIC_INTERPOL) { 652ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_r_y = dest_r_y < 0 ? 0 : dest_r_y > 16711680 ? 16711680 : dest_r_y; 653ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_g_m = dest_g_m < 0 ? 0 : dest_g_m > 16711680 ? 16711680 : dest_g_m; 654ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_b_c = dest_b_c < 0 ? 0 : dest_b_c > 16711680 ? 16711680 : dest_b_c; 655ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_a = dest_a < 0 ? 0 : dest_a > 16711680 ? 16711680 : dest_a; 656ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 657ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (dest_a) { 658ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int r = ((FX_DWORD)dest_r_y) * 255 / dest_a; 659ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int g = ((FX_DWORD)dest_g_m) * 255 / dest_a; 660ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int b = ((FX_DWORD)dest_b_c) * 255 / dest_a; 661ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan[0] = b > 255 ? 255 : b < 0 ? 0 : b; 662ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan[1] = g > 255 ? 255 : g < 0 ? 0 : g; 663ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan[2] = r > 255 ? 255 : r < 0 ? 0 : r; 664ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 665ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestFormat == FXDIB_Argb) { 666ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan[3] = (FX_BYTE)((dest_a) >> 16); 667ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 668ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov *dest_sacn_mask = (FX_BYTE)((dest_a) >> 16); 669ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 670ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_scan += DestBpp; 671ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (dest_sacn_mask) { 672ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_sacn_mask++; 673ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 674ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 675ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov break; 676ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 677ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 678ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pDestBitmap->ComposeScanline(row - m_DestClip.top, m_pDestScanline, m_pDestMaskScanline); 679ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 680ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 681ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovCFX_ImageStretcher::CFX_ImageStretcher() 682ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 683ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pScanline = NULL; 684ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pStretchEngine = NULL; 685ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pMaskScanline = NULL; 686ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 687ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovCFX_ImageStretcher::~CFX_ImageStretcher() 688ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 689ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pScanline) { 690ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_Free(m_pScanline); 691ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 692ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pStretchEngine) { 693ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov delete m_pStretchEngine; 694ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 695ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pMaskScanline) { 696ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_Free(m_pMaskScanline); 697ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 698ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 699ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFXDIB_Format _GetStretchedFormat(const CFX_DIBSource* pSrc) 700ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 701ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FXDIB_Format format = pSrc->GetFormat(); 702ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (format == FXDIB_1bppMask) { 703ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov format = FXDIB_8bppMask; 704ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if (format == FXDIB_1bppRgb) { 705ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov format = FXDIB_8bppRgb; 706ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if (format == FXDIB_8bppRgb) { 707ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pSrc->GetPalette()) { 708ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov format = FXDIB_Rgb; 709ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 710ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 711ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return format; 712ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 713ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CFX_ImageStretcher::Start(IFX_ScanlineComposer* pDest, 714ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const CFX_DIBSource* pSource, int dest_width, int dest_height, 715ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov const FX_RECT& rect, FX_DWORD flags) 716ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 717ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestFormat = _GetStretchedFormat(pSource); 718ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestBPP = m_DestFormat & 0xff; 719ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pDest = pDest; 720ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pSource = pSource; 721ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestWidth = dest_width; 722ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestHeight = dest_height; 723ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_ClipRect = rect; 724ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_Flags = flags; 725ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (pSource->GetFormat() == FXDIB_1bppRgb && pSource->GetPalette()) { 726ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_ARGB pal[256]; 727ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int a0, r0, g0, b0, a1, r1, g1, b1; 728ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov ArgbDecode(pSource->GetPaletteEntry(0), a0, r0, g0, b0); 729ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov ArgbDecode(pSource->GetPaletteEntry(1), a1, r1, g1, b1); 730ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int i = 0; i < 256; i ++) { 731ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int a = a0 + (a1 - a0) * i / 255; 732ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int r = r0 + (r1 - r0) * i / 255; 733ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int g = g0 + (g1 - g0) * i / 255; 734ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int b = b0 + (b1 - b0) * i / 255; 735ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pal[i] = ArgbEncode(a, r, g, b); 736ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 737ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!pDest->SetInfo(rect.Width(), rect.Height(), m_DestFormat, pal)) { 738ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 739ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 740ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if (pSource->GetFormat() == FXDIB_1bppCmyk && pSource->GetPalette()) { 741ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_CMYK pal[256]; 742ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int c0, m0, y0, k0, c1, m1, y1, k1; 743ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CmykDecode(pSource->GetPaletteEntry(0), c0, m0, y0, k0); 744ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov CmykDecode(pSource->GetPaletteEntry(1), c1, m1, y1, k1); 745ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (int i = 0; i < 256; i ++) { 746ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int c = c0 + (c1 - c0) * i / 255; 747ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int m = m0 + (m1 - m0) * i / 255; 748ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int y = y0 + (y1 - y0) * i / 255; 749ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int k = k0 + (k1 - k0) * i / 255; 750ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov pal[i] = CmykEncode(c, m, y, k); 751ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 752ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!pDest->SetInfo(rect.Width(), rect.Height(), m_DestFormat, pal)) { 753ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 754ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 755ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else if (!pDest->SetInfo(rect.Width(), rect.Height(), m_DestFormat, NULL)) { 756ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 757ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 758ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (flags & FXDIB_DOWNSAMPLE) { 759ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return StartQuickStretch(); 760ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 761ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return StartStretch(); 762ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 763ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 764ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CFX_ImageStretcher::Continue(IFX_Pause* pPause) 765ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 766ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_Flags & FXDIB_DOWNSAMPLE) { 767ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return ContinueQuickStretch(pPause); 768ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 769ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return ContinueStretch(pPause); 770ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 771ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 772ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifndef _FPDFAPI_MINI_ 773ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define MAX_PROGRESSIVE_STRETCH_PIXELS 1000000 774ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#else 775ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#define MAX_PROGRESSIVE_STRETCH_PIXELS 100000 776ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 777ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CFX_ImageStretcher::StartStretch() 778ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 779ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pStretchEngine = FX_NEW CStretchEngine(m_pDest, m_DestFormat, m_DestWidth, m_DestHeight, m_ClipRect, m_pSource, m_Flags); 780ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_pStretchEngine) { 781ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 782ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 783ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pStretchEngine->StartStretchHorz(); 784ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pSource->GetWidth() * m_pSource->GetHeight() < MAX_PROGRESSIVE_STRETCH_PIXELS) { 785ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pStretchEngine->Continue(NULL); 786ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 787ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 788ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return TRUE; 789ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 790ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CFX_ImageStretcher::ContinueStretch(IFX_Pause* pPause) 791ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 792ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pStretchEngine == NULL) { 793ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 794ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 795ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return m_pStretchEngine->Continue(pPause); 796ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 797ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CFX_ImageStretcher::StartQuickStretch() 798ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 799ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#ifdef _FPDFAPI_MINI_ 800ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pSource->SetDownSampleSize(m_DestWidth, m_DestHeight); 801ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov#endif 802ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_bFlipX = FALSE; 803ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_bFlipY = FALSE; 804ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestWidth < 0) { 805ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_bFlipX = TRUE; 806ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestWidth = -m_DestWidth; 807ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 808ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_DestHeight < 0) { 809ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_bFlipY = TRUE; 810ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_DestHeight = -m_DestHeight; 811ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 812ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_LineIndex = 0; 813ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_DWORD size = m_ClipRect.Width(); 814ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (size && m_DestBPP > (int)(INT_MAX / size)) { 815ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 816ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 817ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov size *= m_DestBPP; 818ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pScanline = FX_Alloc(FX_BYTE, (size / 8 + 3) / 4 * 4); 819ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_pScanline) { 820ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 821ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 822ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pSource->m_pAlphaMask) { 823ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pMaskScanline = FX_Alloc(FX_BYTE, (m_ClipRect.Width() + 3) / 4 * 4); 824ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (!m_pMaskScanline) { 825ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 826ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 827ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 828ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pSource->GetWidth() * m_pSource->GetHeight() < MAX_PROGRESSIVE_STRETCH_PIXELS) { 829ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov ContinueQuickStretch(NULL); 830ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 831ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 832ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return TRUE; 833ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 834ee451cb395940862dad63c85adfe8f2fd55e864cSvet GanovFX_BOOL CFX_ImageStretcher::ContinueQuickStretch(IFX_Pause* pPause) 835ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov{ 836ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pScanline == NULL) { 837ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 838ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 839ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int result_width = m_ClipRect.Width(), result_height = m_ClipRect.Height(); 840ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int src_width = m_pSource->GetWidth(), src_height = m_pSource->GetHeight(); 841ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov for (; m_LineIndex < result_height; m_LineIndex ++) { 842ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov int dest_y, src_y; 843ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_bFlipY) { 844ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_y = result_height - m_LineIndex - 1; 845ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_y = (m_DestHeight - (dest_y + m_ClipRect.top) - 1) * src_height / m_DestHeight; 846ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } else { 847ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov dest_y = m_LineIndex; 848ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_y = (dest_y + m_ClipRect.top) * src_height / m_DestHeight; 849ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 850ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (src_y >= src_height) { 851ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_y = src_height - 1; 852ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 853ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (src_y < 0) { 854ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov src_y = 0; 855ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 856ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pSource->SkipToScanline(src_y, pPause)) { 857ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return TRUE; 858ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 859ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pSource->DownSampleScanline(src_y, m_pScanline, m_DestBPP, m_DestWidth, m_bFlipX, m_ClipRect.left, result_width); 860ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov FX_LPBYTE scan_extra_alpha = NULL; 861ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov if (m_pMaskScanline) { 862ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pSource->m_pAlphaMask->DownSampleScanline(src_y, m_pMaskScanline, 1, m_DestWidth, m_bFlipX, m_ClipRect.left, result_width); 863ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 864ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov m_pDest->ComposeScanline(dest_y, m_pScanline, m_pMaskScanline); 865ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov } 866ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov return FALSE; 867ee451cb395940862dad63c85adfe8f2fd55e864cSvet Ganov} 868