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// PTLens, Copyright (C) 2004, Thomas Niemann
// email: thomasn@epaperpress.com, subject=ptlens
//
// This program is free software; you can redistribute
// it and/or modify it under the terms of the GNU
// General Public License as published by the Free
// Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will
// be useful, but WITHOUT ANY WARRANTY; without even
// the implied warranty of MERCHANTABILITY or FITNESS
// FOR A PARTICULAR PURPOSE. See the GNU General Public
// License for more details.
//
// You should have received a copy of the GNU General
// Public License along with this program; if not,
// write to the Free Software Foundation, Inc., 675
// Mass Ave, Cambridge, MA 02139, USA.
#include "main.h"
int cpyBufToPs(void *buf) {
// some local variables for efficiency
int16 tileHeight = gFr->filterRect.bottom - gFr->filterRect.top;
int16 tileWidth = gFr->filterRect.right - gFr->filterRect.left;
Rect *outRect = &gFr->outRect;
Rect *filterRect = &gFr->filterRect;
int16 imageWidth = PHO.imageWidth;
int16 imageHeight = PHO.imageHeight;
int32 imageDepth = PHO.imageDepth;
int32 bytesPerPixel = (imageDepth/8) * 3;
// round up to the nearest horizontal and vertical tile count
uint16 tilesVert = (uint16)((tileHeight - 1 + imageHeight) / tileHeight);
uint16 tilesHoriz = (uint16)((tileWidth - 1 + imageWidth) / tileWidth);
// Fixed numbers are 16.16 values
// the first 16 bits represent the whole number
// the last 16 bits represent the fraction
gFr->inputRate = (int32)1 << 16;
gFr->maskRate = (int32)1 << 16;
// loop through each tile makeing sure we don't go over the bounds
// of the imageHeight or imageWidth
for (uint16 vertTile = 0; vertTile < tilesVert; vertTile++) {
for (uint16 horizTile = 0; horizTile < tilesHoriz; horizTile++) {
outRect->top = (int16)(vertTile * tileHeight);
outRect->left = (int16)(horizTile * tileWidth);
outRect->bottom = (int16)(outRect->top + tileHeight);
outRect->right = (int16)(outRect->left + tileWidth);
if (outRect->bottom > imageHeight)
outRect->bottom = imageHeight;
if (outRect->right > imageWidth)
outRect->right = imageWidth;
for (uint16 plane = 0; plane < 3; plane++) {
// we want one plane at a time, small memory foot print is good
gFr->outLoPlane = plane;
gFr->outHiPlane = plane;
// update the gFr with our latest request
*gResult = gFr->advanceState();
if (*gResult != noErr)
return display("cpyBufToPs: advanceState");
// copy one channel at a time
if (imageDepth == 8) {
uint8* pixel = (uint8*)gFr->outData;
uint16 rectHeight = (uint16)(outRect->bottom - outRect->top);
uint16 rectWidth = (uint16)(outRect->right - outRect->left);
for(uint16 pixelY = 0; pixelY < rectHeight; pixelY++) {
Ptr dissolve = (char *)buf + bytesPerPixel *
(imageWidth * (outRect->top + pixelY) + outRect->left) + plane;
for(uint16 pixelX = 0; pixelX < rectWidth; pixelX++) {
*pixel++ = *dissolve;
dissolve += bytesPerPixel;
}
pixel += gFr->outRowBytes - rectWidth;
}
} else {
// assume 16-bit
uint16* pixel = (uint16*)gFr->outData;
uint16 rectHeight = (uint16)(outRect->bottom - outRect->top);
uint16 rectWidth = (uint16)(outRect->right - outRect->left);
int bytesPerPixel2 = bytesPerPixel >> 1;
for(uint16 pixelY = 0; pixelY < rectHeight; pixelY++) {
uint16 *dissolve = (uint16 *)((char *)buf + bytesPerPixel *
(imageWidth * (outRect->top + pixelY) + outRect->left)
+ 2*plane);
for(uint16 pixelX = 0; pixelX < rectWidth; pixelX++) {
// convert 0..65535 to 0..32768
*pixel++ = (*dissolve + 1U) >> 1;
dissolve += bytesPerPixel2;
}
pixel += (gFr->outRowBytes - 2*rectWidth) >> 1;
}
}
}
}
}
return 0;
}
int cpyPsToBuf(void *buf) {
// some local variables for efficiency
int16 tileHeight = gFr->filterRect.bottom - gFr->filterRect.top;
int16 tileWidth = gFr->filterRect.right - gFr->filterRect.left;
Rect *inRect = &gFr->inRect;
Rect *filterRect = &gFr->filterRect;
int16 imageWidth = PHO.imageWidth;
int16 imageHeight = PHO.imageHeight;
int32 imageDepth = PHO.imageDepth;
int32 bytesPerPixel = (imageDepth/8) * 3;
// round up to the nearest horizontal and vertical tile count
uint16 tilesVert = (uint16)((tileHeight - 1 + imageHeight) / tileHeight);
uint16 tilesHoriz = (uint16)((tileWidth - 1 + imageWidth) / tileWidth);
// Fixed numbers are 16.16 values
// the first 16 bits represent the whole number
// the last 16 bits represent the fraction
gFr->inputRate = (int32)1 << 16;
gFr->maskRate = (int32)1 << 16;
// loop through each tile makeing sure we don't go over the bounds
// of the imageHeight or imageWidth
for (uint16 vertTile = 0; vertTile < tilesVert; vertTile++) {
for (uint16 horizTile = 0; horizTile < tilesHoriz; horizTile++) {
inRect->top = (int16)(vertTile * tileHeight);
inRect->left = (int16)(horizTile * tileWidth);
inRect->bottom = (int16)(inRect->top + tileHeight);
inRect->right = (int16)(inRect->left + tileWidth);
if (inRect->bottom > imageHeight)
inRect->bottom = imageHeight;
if (inRect->right > imageWidth)
inRect->right = imageWidth;
for (uint16 plane = 0; plane < 3; plane++) {
// we want one plane at a time, small memory foot print is good
gFr->inLoPlane = plane;
gFr->inHiPlane = plane;
// update the gFr with our latest request
*gResult = gFr->advanceState();
if (*gResult != noErr)
return display("cpyPsToBuf: advanceState");
// copy one channel at a time
if (imageDepth == 8) {
uint8* pixel = (uint8*)gFr->inData;
uint16 rectHeight = (uint16)(inRect->bottom - inRect->top);
uint16 rectWidth = (uint16)(inRect->right - inRect->left);
for(uint16 pixelY = 0; pixelY < rectHeight; pixelY++) {
Ptr dissolve = (char *)buf + bytesPerPixel *
(imageWidth * (inRect->top + pixelY) + inRect->left) + plane;
for(uint16 pixelX = 0; pixelX < rectWidth; pixelX++) {
*dissolve = *pixel++;
dissolve += bytesPerPixel;
}
pixel += gFr->inRowBytes - rectWidth;
}
} else {
// assume 16-bit
uint16* pixel = (uint16*)gFr->inData;
uint16 rectHeight = (uint16)(inRect->bottom - inRect->top);
uint16 rectWidth = (uint16)(inRect->right - inRect->left);
int bytesPerPixel2 = bytesPerPixel >> 1;
for(uint16 pixelY = 0; pixelY < rectHeight; pixelY++) {
uint16 *dissolve = (uint16 *)((char *)buf +
bytesPerPixel *
(imageWidth * (inRect->top + pixelY) + inRect->left)
+ 2*plane);
for(uint16 pixelX = 0; pixelX < rectWidth; pixelX++) {
// convert 0..32768 to 0..65535
*dissolve = (*pixel++ * 65535U + 16384U) >> 15;
dissolve += bytesPerPixel2;
}
pixel += (gFr->inRowBytes - 2*rectWidth) >> 1;
}
}
}
}
}
return 0;
}