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/*************************************************************************** |
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* Copyright (c) 2024 Microsoft Corporation |
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* |
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* This program and the accompanying materials are made available under the |
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* terms of the MIT License which is available at |
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* https://opensource.org/licenses/MIT. |
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* |
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* SPDX-License-Identifier: MIT |
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**************************************************************************/ |
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/**************************************************************************/ |
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/**************************************************************************/ |
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/** */ |
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/** GUIX Component */ |
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/** */ |
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/** Utility (Utility) */ |
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/** */ |
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/**************************************************************************/ |
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#define REDVAL(_c) (GX_UBYTE)((_c) >> 16) |
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#define GREENVAL(_c) (GX_UBYTE)((_c) >> 8) |
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#define BLUEVAL(_c) (GX_UBYTE)(_c) |
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#define ASSEMBLECOLOR(_r, _g, _b) \ |
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((GX_COLOR)(((_r) << 16) | \ |
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((_g) << 8)) | \ |
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(_b)) |
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#define BYTE_RANGE(_c) _c > 255 ? 255 : _c |
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#define GX_SOURCE_CODE |
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/* Include necessary system files. */ |
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#include "gx_api.h" |
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#include "gx_utility.h" |
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#include "gx_system.h" |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_utility_32argb_pixelmap_raw_resize PORTABLE C */ |
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/* 6.1.7 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* Internal helper function that resize an uncompressed pixelmap */ |
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/* without alpha. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* src The source pixelmap */ |
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/* destination The resized pixelmap to be */ |
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/* returned */ |
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/* width New width */ |
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/* height New height */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* status Completion status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* _gx_system_memory_allocator */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* GUIX Internal Code */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* 06-02-2021 Kenneth Maxwell Modified comment(s), */ |
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/* removed unused variable */ |
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/* assignment, */ |
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/* resulting in version 6.1.7 */ |
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/* */ |
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/**************************************************************************/ |
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static UINT _gx_utility_32argb_pixelmap_raw_resize(GX_PIXELMAP *src, GX_PIXELMAP *destination, INT width, INT height) |
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{ |
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/* The pixelmap resize function is implemented from bilinear interpolation |
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image scaling algorithm. */ |
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GX_COLOR *get; |
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GX_COLOR *put; |
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INT xdiff; |
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INT ydiff; |
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INT xradio; |
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INT yradio; |
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INT x; |
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INT y; |
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INT xx; |
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INT yy; |
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GX_COLOR neighbor_pixels[2][2]; |
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INT red; |
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INT green; |
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INT blue; |
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/* Calculate scale ratio and enlarge it by 256 times to keep precision. */ |
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xradio = ((src -> gx_pixelmap_width) << 8) / width; |
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yradio = ((src -> gx_pixelmap_height) << 8) / height; |
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/* Fill property values into destination pixelmap structure. */ |
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destination -> gx_pixelmap_flags = src -> gx_pixelmap_flags; |
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destination -> gx_pixelmap_format = src -> gx_pixelmap_format; |
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destination -> gx_pixelmap_height = (GX_VALUE)height; |
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destination -> gx_pixelmap_width = (GX_VALUE)width; |
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/* Safe int math is not required here, calling function limits max width, height to 14 bits so |
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overflow cannot occur. */ |
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destination -> gx_pixelmap_data_size = (UINT)(height * width) * sizeof(GX_COLOR); |
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/* Allocate memory for destination pixelmap. */ |
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destination -> gx_pixelmap_data = (GX_UBYTE *)_gx_system_memory_allocator(destination -> gx_pixelmap_data_size); |
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✓✓ |
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if (destination -> gx_pixelmap_data == GX_NULL) |
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{ |
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return GX_SYSTEM_MEMORY_ERROR; |
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} |
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put = (GX_COLOR *)destination -> gx_pixelmap_data; |
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/* Loop throught destination's pixels and fill each pixel with the interpolation of |
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4 neighboring pixels. */ |
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✓✓ |
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for (y = 0; y < height; y++) |
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{ |
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✓✓ |
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for (x = 0; x < width; x++) |
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{ |
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/* Find the original source pixel that the destination pixel conrespond to. */ |
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xx = (xradio * x) >> 8; |
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yy = (yradio * y) >> 8; |
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/* The coordinates of the original source pixel are truncate value, |
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calucate their distance between the mathematical coordinates. */ |
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xdiff = (xradio * x) & 0xff; |
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ydiff = (yradio * y) & 0xff; |
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get = (GX_COLOR *)src -> gx_pixelmap_data; |
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get += yy * src -> gx_pixelmap_width; |
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9104122 |
get += xx; |
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/* Calculate 4 nearest neighboring pixels around the mathematical point of original pixel. */ |
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neighbor_pixels[0][0] = *get; |
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✓✓✓✓
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if ((xx < src -> gx_pixelmap_width - 1) && (yy < src -> gx_pixelmap_height - 1)) |
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{ |
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neighbor_pixels[0][1] = *(get + 1); |
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neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width); |
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neighbor_pixels[1][1] = *(get + src -> gx_pixelmap_width + 1); |
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} |
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else |
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{ |
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✓✓ |
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if ((xx == src -> gx_pixelmap_width - 1) && |
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✓✓ |
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(yy == src -> gx_pixelmap_height - 1)) |
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{ |
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/* Handle the bottom right pixel. */ |
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neighbor_pixels[0][1] = neighbor_pixels[0][0]; |
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neighbor_pixels[1][0] = neighbor_pixels[0][0]; |
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neighbor_pixels[1][1] = neighbor_pixels[0][0]; |
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} |
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✓✓ |
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else if (xx == src -> gx_pixelmap_width - 1) |
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{ |
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/* Handle the pixel in right-most edge. */ |
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neighbor_pixels[0][1] = neighbor_pixels[0][0]; |
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neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width); |
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neighbor_pixels[1][1] = neighbor_pixels[1][0]; |
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} |
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else |
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{ |
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/* Handle the pixel in bottom edge. */ |
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neighbor_pixels[0][1] = *(get + 1); |
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neighbor_pixels[1][0] = neighbor_pixels[0][0]; |
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neighbor_pixels[1][1] = neighbor_pixels[0][1]; |
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} |
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} |
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/* Calulate pixel values by interpolating 4 neighboring pixels. */ |
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red = (REDVAL(neighbor_pixels[0][0]) * (256 - xdiff) * (256 - ydiff) + \ |
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REDVAL(neighbor_pixels[0][1]) * xdiff * (256 - ydiff) + \ |
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REDVAL(neighbor_pixels[1][0]) * ydiff * (256 - xdiff) + \ |
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REDVAL(neighbor_pixels[1][1]) * xdiff * ydiff) >> 16; |
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green = (GREENVAL(neighbor_pixels[0][0]) * (256 - xdiff) * (256 - ydiff) + \ |
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GREENVAL(neighbor_pixels[0][1]) * xdiff * (256 - ydiff) + \ |
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GREENVAL(neighbor_pixels[1][0]) * ydiff * (256 - xdiff) + \ |
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GREENVAL(neighbor_pixels[1][1]) * xdiff * ydiff) >> 16; |
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blue = (BLUEVAL(neighbor_pixels[0][0]) * (256 - xdiff) * (256 - ydiff) + \ |
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BLUEVAL(neighbor_pixels[0][1]) * xdiff * (256 - ydiff) + \ |
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BLUEVAL(neighbor_pixels[1][0]) * ydiff * (256 - xdiff) + \ |
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BLUEVAL(neighbor_pixels[1][1]) * xdiff * ydiff) >> 16; |
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red = BYTE_RANGE(red); |
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green = BYTE_RANGE(green); |
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blue = BYTE_RANGE(blue); |
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*put++ = ASSEMBLECOLOR((GX_COLOR)red, (GX_COLOR)green, (GX_COLOR)blue); |
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} |
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} |
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return GX_SUCCESS; |
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} |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_utility_32argb_pixelmap_alpha_resize PORTABLE C */ |
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/* 6.1.7 */ |
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/* AUTHOR */ |
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/* */ |
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/* Kenneth Maxwell, Microsoft Corporation */ |
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/* */ |
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/* DESCRIPTION */ |
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/* */ |
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/* Internal helper function that resize an uncompressed pixelmap */ |
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/* with alpha. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* src The source pixelmap */ |
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/* destination The resized pixelmap to be */ |
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/* returned */ |
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/* width New width */ |
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/* height New height */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* status Completion status */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* None */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* GUIX Internal Code */ |
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/* */ |
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/* RELEASE HISTORY */ |
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/* */ |
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/* DATE NAME DESCRIPTION */ |
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/* */ |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
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/* resulting in version 6.1 */ |
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/* 06-02-2021 Kenneth Maxwell Modified comment(s), */ |
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/* removed unused variable */ |
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/* assignment, */ |
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/* resulting in version 6.1.7 */ |
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/* */ |
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/**************************************************************************/ |
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static UINT _gx_utility_32argb_pixelmap_alpha_resize(GX_PIXELMAP *src, GX_PIXELMAP *destination, INT width, INT height) |
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{ |
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/* The pixelmap resize function is implemented from bilinear interpolation |
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image scaling algorithm. */ |
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GX_COLOR *get; |
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GX_COLOR *put; |
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INT xdiff; |
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INT ydiff; |
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INT xradio; |
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INT yradio; |
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INT x; |
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INT y; |
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INT xx; |
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INT yy; |
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GX_COLOR neighbor_pixels[2][2] = {{0, 0}, {0, 0}}; |
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INT red; |
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INT green; |
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INT blue; |
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INT alpha; |
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/* Calculate scale ratio and enlarge it by 256 times to keep precision. */ |
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xradio = ((src -> gx_pixelmap_width) << 8) / width; |
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yradio = ((src -> gx_pixelmap_height) << 8) / height; |
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/* Fill property values into destination pixelmap structure. */ |
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destination -> gx_pixelmap_flags = src -> gx_pixelmap_flags; |
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destination -> gx_pixelmap_format = src -> gx_pixelmap_format; |
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destination -> gx_pixelmap_height = (GX_VALUE)height; |
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destination -> gx_pixelmap_width = (GX_VALUE)width; |
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/* Safe int math is not required here, calling function limits max width, height to 14 bits so |
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overflow cannot occur. */ |
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destination -> gx_pixelmap_data_size = (UINT)(height * width) * sizeof(GX_COLOR); |
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/* Allocate memory to load pixelmap data. */ |
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destination -> gx_pixelmap_data = (GX_UBYTE *)_gx_system_memory_allocator(destination -> gx_pixelmap_data_size); |
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✓✓ |
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if (destination -> gx_pixelmap_data == GX_NULL) |
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{ |
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return GX_SYSTEM_MEMORY_ERROR; |
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} |
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put = (GX_COLOR *)destination -> gx_pixelmap_data; |
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/* Loop through destination's pixel and fill each pixel with |
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the interpolation of 4 nearest neighboring pixels.*/ |
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✓✓ |
69573 |
for (y = 0; y < height; y++) |
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{ |
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✓✓ |
10999665 |
for (x = 0; x < width; x++) |
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{ |
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/* Find the original source pixel that the destination pixel conrespond to. */ |
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10930459 |
xx = (xradio * x) >> 8; |
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10930459 |
yy = (yradio * y) >> 8; |
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/* The coordinates of the original source pixel are truncate value, |
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calucate their distance between the mathematical coordinates. */ |
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10930459 |
xdiff = xradio * x - (xx << 8); |
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10930459 |
ydiff = yradio * y - (yy << 8); |
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10930459 |
get = (GX_COLOR *)src -> gx_pixelmap_data; |
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10930459 |
get += yy * src -> gx_pixelmap_width; |
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10930459 |
get += xx; |
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/* Calculate 4 nearest neighboring pixels around the mathematical point of original pixel. */ |
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10930459 |
neighbor_pixels[0][0] = *get; |
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✓✓✓✓
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10930459 |
if ((xx < src -> gx_pixelmap_width - 1) && (yy < src -> gx_pixelmap_height - 1)) |
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{ |
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10912929 |
neighbor_pixels[0][1] = *(get + 1); |
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10912929 |
neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width); |
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10912929 |
neighbor_pixels[1][1] = *(get + src -> gx_pixelmap_width + 1); |
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} |
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else |
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{ |
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|
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✓✓ |
17530 |
if ((xx == src -> gx_pixelmap_width - 1) && |
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✓✓ |
12022 |
(yy == src -> gx_pixelmap_height - 1)) |
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{ |
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/* Hanle pixels in right bottom corner. */ |
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neighbor_pixels[0][1] = neighbor_pixels[0][0]; |
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neighbor_pixels[1][0] = neighbor_pixels[0][0]; |
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|
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neighbor_pixels[1][1] = neighbor_pixels[0][0]; |
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} |
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✓✓ |
17518 |
else if (xx == src -> gx_pixelmap_width - 1) |
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{ |
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/* Handle pixels in right edge. */ |
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|
12010 |
neighbor_pixels[0][1] = neighbor_pixels[0][0]; |
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|
12010 |
neighbor_pixels[1][0] = *(get + src -> gx_pixelmap_width); |
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|
12010 |
neighbor_pixels[1][1] = neighbor_pixels[1][0]; |
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} |
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else |
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{ |
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/* Handle pixels in bottom edge. */ |
359 |
|
5508 |
neighbor_pixels[0][1] = *(get + 1); |
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|
5508 |
neighbor_pixels[1][0] = neighbor_pixels[0][0]; |
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|
5508 |
neighbor_pixels[1][1] = neighbor_pixels[0][1]; |
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} |
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} |
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/* Calulate pixel values by interpolating 4 neighboring pixels. */ |
366 |
|
10930459 |
red = (INT)((REDVAL(neighbor_pixels[0][0]) * (neighbor_pixels[0][0] >> 24) * (256 - (ULONG)xdiff) * (256 - (ULONG)ydiff) + \ |
367 |
|
10930459 |
REDVAL(neighbor_pixels[0][1]) * (neighbor_pixels[0][1] >> 24) * (ULONG)xdiff * (256 - (ULONG)ydiff) + \ |
368 |
|
10930459 |
REDVAL(neighbor_pixels[1][0]) * (neighbor_pixels[1][0] >> 24) * (ULONG)ydiff * (256 - (ULONG)xdiff) + \ |
369 |
|
10930459 |
REDVAL(neighbor_pixels[1][1]) * (neighbor_pixels[1][1] >> 24) * (ULONG)xdiff * (ULONG)ydiff) >> 16); |
370 |
|
|
|
371 |
|
10930459 |
green = (INT)((GREENVAL(neighbor_pixels[0][0]) * (neighbor_pixels[0][0] >> 24) * (256 - (ULONG)xdiff) * (256 - (ULONG)ydiff) + \ |
372 |
|
10930459 |
GREENVAL(neighbor_pixels[0][1]) * (neighbor_pixels[0][1] >> 24) * (ULONG)xdiff * (256 - (ULONG)ydiff) + \ |
373 |
|
10930459 |
GREENVAL(neighbor_pixels[1][0]) * (neighbor_pixels[1][0] >> 24) * (ULONG)ydiff * (256 - (ULONG)xdiff) + \ |
374 |
|
10930459 |
GREENVAL(neighbor_pixels[1][1]) * (neighbor_pixels[1][1] >> 24) * (ULONG)xdiff * (ULONG)ydiff) >> 16); |
375 |
|
|
|
376 |
|
10930459 |
blue = (INT)((BLUEVAL(neighbor_pixels[0][0]) * (neighbor_pixels[0][0] >> 24) * (256 - (ULONG)xdiff) * (256 - (ULONG)ydiff) + \ |
377 |
|
10930459 |
BLUEVAL(neighbor_pixels[0][1]) * (neighbor_pixels[0][1] >> 24) * (ULONG)xdiff * (256 - (ULONG)ydiff) + \ |
378 |
|
10930459 |
BLUEVAL(neighbor_pixels[1][0]) * (neighbor_pixels[1][0] >> 24) * (ULONG)ydiff * (256 - (ULONG)xdiff) + \ |
379 |
|
10930459 |
BLUEVAL(neighbor_pixels[1][1]) * (neighbor_pixels[1][1] >> 24) * (ULONG)xdiff * (ULONG)ydiff) >> 16); |
380 |
|
|
|
381 |
|
10930459 |
alpha = (INT)(((neighbor_pixels[0][0] >> 24) * (256 - (ULONG)xdiff) * (256 - (ULONG)ydiff) + \ |
382 |
|
10930459 |
(neighbor_pixels[0][1] >> 24) * (ULONG)xdiff * (256 - (ULONG)ydiff) + \ |
383 |
|
10930459 |
(neighbor_pixels[1][0] >> 24) * (ULONG)ydiff * (256 - (ULONG)xdiff) + \ |
384 |
|
10930459 |
(neighbor_pixels[1][1] >> 24) * (ULONG)xdiff * (ULONG)ydiff) >> 16); |
385 |
|
|
|
386 |
✓✓ |
10930459 |
if (alpha) |
387 |
|
|
{ |
388 |
|
5758659 |
red /= alpha; |
389 |
|
5758659 |
green /= alpha; |
390 |
|
5758659 |
blue /= alpha; |
391 |
|
|
} |
392 |
|
|
|
393 |
|
10930459 |
alpha = BYTE_RANGE(alpha); |
394 |
|
10930459 |
red = BYTE_RANGE(red); |
395 |
|
10930459 |
green = BYTE_RANGE(green); |
396 |
|
10930459 |
blue = BYTE_RANGE(blue); |
397 |
|
|
|
398 |
|
10930459 |
*put++ = ASSEMBLECOLOR((ULONG)red, (ULONG)green, (ULONG)blue) + ((ULONG)alpha << 24); |
399 |
|
|
} |
400 |
|
|
} |
401 |
|
|
|
402 |
|
367 |
return GX_SUCCESS; |
403 |
|
|
} |
404 |
|
|
|
405 |
|
|
/**************************************************************************/ |
406 |
|
|
/* */ |
407 |
|
|
/* FUNCTION RELEASE */ |
408 |
|
|
/* */ |
409 |
|
|
/* _gx_utility_32argb_pixelmap_resize PORTABLE C */ |
410 |
|
|
/* 6.1 */ |
411 |
|
|
/* AUTHOR */ |
412 |
|
|
/* */ |
413 |
|
|
/* Kenneth Maxwell, Microsoft Corporation */ |
414 |
|
|
/* */ |
415 |
|
|
/* DESCRIPTION */ |
416 |
|
|
/* */ |
417 |
|
|
/* 32argb pixelmap resize function that handles uncompress, with or */ |
418 |
|
|
/* alpha channel. */ |
419 |
|
|
/* */ |
420 |
|
|
/* INPUT */ |
421 |
|
|
/* */ |
422 |
|
|
/* src The source pixelmap */ |
423 |
|
|
/* destination The resized pixelmap to be */ |
424 |
|
|
/* returned */ |
425 |
|
|
/* width New width */ |
426 |
|
|
/* height New height */ |
427 |
|
|
/* */ |
428 |
|
|
/* OUTPUT */ |
429 |
|
|
/* */ |
430 |
|
|
/* status Completion status */ |
431 |
|
|
/* */ |
432 |
|
|
/* CALLS */ |
433 |
|
|
/* */ |
434 |
|
|
/* _gx_utility_32argb_pixelmap_alpha_resize */ |
435 |
|
|
/* _gx_utility_32argb_pixelmap_raw_resize */ |
436 |
|
|
/* */ |
437 |
|
|
/* CALLED BY */ |
438 |
|
|
/* */ |
439 |
|
|
/* GUIX Internal Code */ |
440 |
|
|
/* */ |
441 |
|
|
/* RELEASE HISTORY */ |
442 |
|
|
/* */ |
443 |
|
|
/* DATE NAME DESCRIPTION */ |
444 |
|
|
/* */ |
445 |
|
|
/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
446 |
|
|
/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
447 |
|
|
/* resulting in version 6.1 */ |
448 |
|
|
/* */ |
449 |
|
|
/**************************************************************************/ |
450 |
|
694 |
UINT _gx_utility_32argb_pixelmap_resize(GX_PIXELMAP *src, GX_PIXELMAP *destination, INT width, INT height) |
451 |
|
|
{ |
452 |
|
|
UINT status; |
453 |
|
|
|
454 |
✓✓ |
694 |
if (src -> gx_pixelmap_flags & GX_PIXELMAP_ALPHA) |
455 |
|
|
{ |
456 |
|
|
/* alpha, no compression */ |
457 |
|
|
|
458 |
|
368 |
status = _gx_utility_32argb_pixelmap_alpha_resize(src, destination, width, height); |
459 |
|
|
} |
460 |
|
|
else |
461 |
|
|
{ |
462 |
|
|
/* no compression or alpha */ |
463 |
|
|
|
464 |
|
326 |
status = _gx_utility_32argb_pixelmap_raw_resize(src, destination, width, height); |
465 |
|
|
} |
466 |
|
|
|
467 |
|
694 |
return status; |
468 |
|
|
} |
469 |
|
|
|