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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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/** Image Reader Management (Image Reader) */ |
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/** */ |
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/**************************************************************************/ |
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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_system.h" |
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#include "gx_utility.h" |
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#include "gx_image_reader.h" |
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#if defined(GX_SOFTWARE_DECODER_SUPPORT) |
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/**************************************************************************/ |
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/* */ |
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/* FUNCTION RELEASE */ |
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/* */ |
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/* _gx_image_reader_rgb2gray PORTABLE C */ |
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/* 6.1 */ |
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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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/* This function converts RGB value to grayscale. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* pixel RGB value */ |
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/* gray Grayscale value to return */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* None */ |
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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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/* */ |
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/**************************************************************************/ |
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2358022 |
VOID _gx_image_reader_rgb2gray(GX_PIXEL *pixel, GX_UBYTE *gray) |
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{ |
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(*gray) = (GX_UBYTE)((pixel -> gx_pixel_red * 299 + |
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pixel -> gx_pixel_green * 587 + |
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pixel -> gx_pixel_blue * 114) / 1000); |
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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_image_reader_gray_threshold_calculate PORTABLE C */ |
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/* 6.1 */ |
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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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/* This function calcualtes thredshold value used to create monochrome */ |
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/* pixlemap. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* image_reader Image reader control block */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* None */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* [gx_image_reader_pixel_read] Pixel read callback */ |
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/* _gx_image_reader_rgb2gray Conver RGB value to grayscale */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* _gx_image_reader_start */ |
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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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/* */ |
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/**************************************************************************/ |
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static VOID _gx_image_reader_gray_threshold_calculate(GX_IMAGE_READER *image_reader) |
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{ |
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INT threshold = 0; |
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INT xval; |
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INT yval; |
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INT count = 0; |
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GX_PIXEL pixel; |
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GX_UBYTE gray; |
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✓✓ |
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for (yval = 0; yval < (INT)image_reader -> gx_image_reader_image_height; yval++) |
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{ |
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✓✓ |
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for (xval = 0; xval < (INT)image_reader -> gx_image_reader_image_width; xval++) |
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{ |
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image_reader -> gx_image_reader_pixel_read(image_reader, xval, &pixel); |
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✓✓ |
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if (pixel.gx_pixel_alpha > 128) |
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{ |
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/* Convert RGB value to grayscale. */ |
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_gx_image_reader_rgb2gray(&pixel, &gray); |
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threshold += gray; |
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count++; |
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} |
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} |
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image_reader -> gx_image_reader_getdata += image_reader -> gx_image_reader_input_stride; |
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} |
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✓✓ |
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if (count) |
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{ |
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image_reader -> gx_image_reader_mono_shreshold = (GX_UBYTE)(threshold / count); |
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} |
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✓✓ |
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if (image_reader -> gx_image_reader_mono_shreshold == 0) |
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{ |
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/* All opaque pixels are black. */ |
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image_reader -> gx_image_reader_mono_shreshold = 255; |
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} |
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✓✓ |
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else if (image_reader -> gx_image_reader_mono_shreshold == 255) |
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{ |
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/* All opqaute pixels are white. */ |
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image_reader -> gx_image_reader_mono_shreshold = 0; |
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} |
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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_image_reader_pixelmap_info_set PORTABLE C */ |
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/* 6.1 */ |
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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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/* This function prepares for image converting. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* image_reader Image reader control block */ |
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/* outmap Pointer to a pixelmap that is */ |
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/* used to loading converted */ |
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/* image */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* 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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/* _gx_image_reader_start */ |
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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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/* */ |
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/**************************************************************************/ |
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static UINT _gx_image_reader_pixelmap_info_set(GX_IMAGE_READER *image_reader, GX_PIXELMAP *outmap) |
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{ |
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outmap -> gx_pixelmap_width = (GX_VALUE)image_reader -> gx_image_reader_image_width; |
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outmap -> gx_pixelmap_height = (GX_VALUE)image_reader -> gx_image_reader_image_height; |
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outmap -> gx_pixelmap_data_size = 0; |
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outmap -> gx_pixelmap_aux_data_size = 0; |
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outmap -> gx_pixelmap_format = image_reader -> gx_image_reader_color_format; |
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/* Set alpha flag. */ |
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✓✓ |
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if (image_reader -> gx_image_reader_mode & GX_IMAGE_READER_MODE_ALPHA) |
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{ |
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✓✓ |
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switch (outmap -> gx_pixelmap_format) |
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{ |
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case GX_COLOR_FORMAT_8BIT_PALETTE: |
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case GX_COLOR_FORMAT_4BIT_GRAY: |
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case GX_COLOR_FORMAT_MONOCHROME: |
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outmap -> gx_pixelmap_flags = GX_PIXELMAP_TRANSPARENT; |
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outmap -> gx_pixelmap_transparent_color = GX_TRANSPARENT_COLOR; |
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break; |
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default: |
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outmap -> gx_pixelmap_flags = GX_PIXELMAP_ALPHA; |
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break; |
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} |
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} |
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/* Calculate pixelmap data size, which will be used for memory allocation lator. Max width and height is limited to 14 bits, |
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so overflow cannot occur. */ |
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✓✓✓✓
✓✓✓ |
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switch (outmap -> gx_pixelmap_format) |
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{ |
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case GX_COLOR_FORMAT_565RGB: |
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case GX_COLOR_FORMAT_1555XRGB: |
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outmap -> gx_pixelmap_data_size = (ULONG)(outmap -> gx_pixelmap_width * outmap -> gx_pixelmap_height * (INT)sizeof(USHORT)); |
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✓✓ |
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if (outmap -> gx_pixelmap_flags & GX_PIXELMAP_ALPHA) |
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{ |
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outmap -> gx_pixelmap_aux_data_size = (ULONG)(outmap -> gx_pixelmap_width * outmap -> gx_pixelmap_height); |
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} |
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break; |
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case GX_COLOR_FORMAT_4444ARGB: |
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outmap -> gx_pixelmap_data_size = (ULONG)(outmap -> gx_pixelmap_width * outmap -> gx_pixelmap_height * (INT)sizeof(USHORT)); |
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break; |
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case GX_COLOR_FORMAT_32ARGB: |
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case GX_COLOR_FORMAT_24XRGB: |
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outmap -> gx_pixelmap_data_size = (ULONG)(outmap -> gx_pixelmap_width * outmap -> gx_pixelmap_height * (INT)sizeof(GX_COLOR)); |
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image_reader -> gx_image_reader_mode = (GX_UBYTE)(image_reader -> gx_image_reader_mode & (~GX_IMAGE_READER_MODE_DITHER)); |
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break; |
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case GX_COLOR_FORMAT_8BIT_ALPHAMAP: |
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case GX_COLOR_FORMAT_8BIT_PALETTE: |
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outmap -> gx_pixelmap_data_size = (ULONG)(outmap -> gx_pixelmap_width * outmap -> gx_pixelmap_height); |
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break; |
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case GX_COLOR_FORMAT_4BIT_GRAY: |
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outmap -> gx_pixelmap_data_size = (ULONG)(((outmap -> gx_pixelmap_width + 1) >> 1) * outmap -> gx_pixelmap_height); |
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✓✓ |
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if (image_reader -> gx_image_reader_mode & GX_IMAGE_READER_MODE_ALPHA) |
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{ |
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outmap -> gx_pixelmap_aux_data_size = (ULONG)(((outmap -> gx_pixelmap_width + 7) >> 3) * outmap -> gx_pixelmap_height); |
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} |
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break; |
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case GX_COLOR_FORMAT_MONOCHROME: |
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✓✓ |
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if (image_reader -> gx_image_reader_mode & GX_IMAGE_READER_MODE_ALPHA) |
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{ |
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outmap -> gx_pixelmap_data_size = (ULONG)(((outmap -> gx_pixelmap_width + 3) >> 2) * outmap -> gx_pixelmap_height); |
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} |
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else |
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{ |
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outmap -> gx_pixelmap_data_size = (ULONG)(((outmap -> gx_pixelmap_width + 7) >> 3) * outmap -> gx_pixelmap_height); |
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} |
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break; |
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default: |
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return GX_NOT_SUPPORTED; |
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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_image_reader_start PORTABLE C */ |
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/* 6.3.0 */ |
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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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/* This function converts pixelmap to a specified color format. */ |
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/* */ |
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/* INPUT */ |
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/* */ |
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/* image_reader Image reader control block */ |
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/* outmap Output pixelmap */ |
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/* */ |
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/* OUTPUT */ |
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/* */ |
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/* None */ |
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/* */ |
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/* CALLS */ |
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/* */ |
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/* memcpy */ |
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/* memset */ |
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/* _gx_system_memory_allocator Application defined memory */ |
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/* allocation function */ |
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/* _gx_system_memory_free Application defined memory */ |
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/* free function */ |
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/* _gx_image_reader_image_decode Decode specified image */ |
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/* _gx_image_reader_pixel_read_callback_set */ |
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/* Set pixel read callback */ |
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/* _gx_image_reader_pixel_write_callback_set */ |
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/* Set pixel write callback */ |
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/* _gx_image_reader_dither Process dither algorithm */ |
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/* _gx_image_reader_rle_encode Compress image with RLE */ |
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/* algorithm */ |
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/* _gx_image_reader_raw_convert Convert raw format map to */ |
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/* specified format */ |
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/* */ |
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/* CALLED BY */ |
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/* */ |
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/* Application Code */ |
334 |
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/* */ |
335 |
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/* RELEASE HISTORY */ |
336 |
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/* */ |
337 |
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/* DATE NAME DESCRIPTION */ |
338 |
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/* */ |
339 |
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/* 05-19-2020 Kenneth Maxwell Initial Version 6.0 */ |
340 |
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/* 09-30-2020 Kenneth Maxwell Modified comment(s), */ |
341 |
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/* resulting in version 6.1 */ |
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/* 10-31-2023 Ting Zhu Modified comment(s), */ |
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/* improved logic, */ |
344 |
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/* resulting in version 6.3.0 */ |
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/* */ |
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/**************************************************************************/ |
347 |
|
973 |
UINT _gx_image_reader_start(GX_IMAGE_READER *image_reader, GX_PIXELMAP *outmap) |
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{ |
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UINT status; |
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GX_PIXELMAP srcmap; |
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GX_PIXELMAP tempmap; |
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UINT compressed_data_size; |
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UINT compressed_aux_size; |
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UINT raw_size; |
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GX_BOOL do_compress; |
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357 |
|
973 |
memset(outmap, 0, sizeof(GX_PIXELMAP)); |
358 |
|
973 |
memset(&srcmap, 0, sizeof(GX_PIXELMAP)); |
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|
360 |
✓✓ |
973 |
if (!_gx_system_memory_allocator) |
361 |
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{ |
362 |
|
147 |
return GX_SYSTEM_MEMORY_ERROR; |
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} |
364 |
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|
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/* Decode input image to raw format. */ |
366 |
|
826 |
status = _gx_image_reader_image_decode(image_reader, &srcmap); |
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368 |
✓✓ |
826 |
if (status == GX_SUCCESS) |
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{ |
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/* Set output pixelmap information. */ |
371 |
|
817 |
image_reader -> gx_image_reader_image_width = (UINT)srcmap.gx_pixelmap_width; |
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|
817 |
image_reader -> gx_image_reader_image_height = (UINT)srcmap.gx_pixelmap_height; |
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374 |
|
817 |
status = _gx_image_reader_pixelmap_info_set(image_reader, outmap); |
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} |
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|
377 |
✓✓ |
826 |
if (image_reader -> gx_image_reader_mode & GX_IMAGE_READER_MODE_COMPRESS) |
378 |
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{ |
379 |
|
205 |
do_compress = GX_TRUE; |
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} |
381 |
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else |
382 |
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{ |
383 |
|
621 |
do_compress = GX_FALSE; |
384 |
|
|
} |
385 |
|
|
|
386 |
✓✓✓✓
|
826 |
if((image_reader -> gx_image_reader_image_type == GX_IMAGE_TYPE_JPG && srcmap.gx_pixelmap_format == GX_IMAGE_FORMAT_24BPP) || |
387 |
✓✓ |
658 |
(image_reader -> gx_image_reader_image_type == GX_IMAGE_TYPE_PNG)) |
388 |
|
|
{ |
389 |
|
|
|
390 |
✓✓ |
772 |
if (status == GX_SUCCESS) |
391 |
|
|
{ |
392 |
✓✓ |
768 |
if (image_reader -> gx_image_reader_color_format == GX_COLOR_FORMAT_MONOCHROME) |
393 |
|
|
{ |
394 |
|
26 |
status = _gx_image_reader_pixel_read_callback_set(image_reader, &srcmap); |
395 |
|
26 |
_gx_image_reader_gray_threshold_calculate(image_reader); |
396 |
|
|
} |
397 |
|
|
} |
398 |
|
|
|
399 |
|
772 |
image_reader -> gx_image_reader_mode = (GX_UBYTE)(image_reader -> gx_image_reader_mode & (~GX_IMAGE_READER_MODE_COMPRESS)); |
400 |
|
|
|
401 |
|
|
/* Color Space Convert. */ |
402 |
✓✓ |
772 |
if (status == GX_SUCCESS) |
403 |
|
|
{ |
404 |
|
768 |
tempmap = *outmap; |
405 |
|
|
|
406 |
|
768 |
status = _gx_image_reader_pixel_read_callback_set(image_reader, &srcmap); |
407 |
|
|
} |
408 |
|
|
|
409 |
✓✓ |
772 |
if (status == GX_SUCCESS) |
410 |
|
|
{ |
411 |
|
768 |
status = _gx_image_reader_pixel_write_callback_set(image_reader, &tempmap); |
412 |
|
|
} |
413 |
|
|
|
414 |
✓✓ |
772 |
if (status == GX_SUCCESS) |
415 |
|
|
{ |
416 |
|
765 |
status = _gx_image_reader_colorspace_convert(image_reader, &tempmap); |
417 |
|
|
|
418 |
|
765 |
_gx_system_memory_free((VOID *)srcmap.gx_pixelmap_data); |
419 |
|
|
|
420 |
✓✓ |
765 |
if (srcmap.gx_pixelmap_aux_data) |
421 |
|
|
{ |
422 |
|
52 |
_gx_system_memory_free((VOID *)srcmap.gx_pixelmap_aux_data); |
423 |
|
|
} |
424 |
|
|
|
425 |
|
765 |
srcmap = tempmap; |
426 |
|
|
} |
427 |
|
|
} |
428 |
|
|
|
429 |
|
|
/* Compare compressed size and raw size. */ |
430 |
✓✓ |
826 |
if (do_compress) |
431 |
|
|
{ |
432 |
|
205 |
image_reader -> gx_image_reader_mode |= GX_IMAGE_READER_MODE_COMPRESS; |
433 |
|
|
|
434 |
|
|
/* Seet pixel read and write callback. */ |
435 |
✓✓ |
205 |
if (status == GX_SUCCESS) |
436 |
|
|
{ |
437 |
|
197 |
status = _gx_image_reader_pixel_read_callback_set(image_reader, &srcmap); |
438 |
|
|
} |
439 |
|
|
|
440 |
✓✓ |
205 |
if (status == GX_SUCCESS) |
441 |
|
|
{ |
442 |
|
197 |
tempmap = *outmap; |
443 |
|
197 |
tempmap.gx_pixelmap_data_size = 0; |
444 |
|
197 |
tempmap.gx_pixelmap_aux_data_size = 0; |
445 |
|
197 |
tempmap.gx_pixelmap_flags |= GX_PIXELMAP_COMPRESSED; |
446 |
|
|
|
447 |
|
197 |
status = _gx_image_reader_pixel_write_callback_set(image_reader, &tempmap); |
448 |
|
|
} |
449 |
|
|
|
450 |
|
|
/* Calculate the storage size that needed for rle encode. */ |
451 |
✓✓ |
205 |
if (status == GX_SUCCESS) |
452 |
|
|
{ |
453 |
|
197 |
_gx_image_reader_rle_encode_size_get(image_reader, &compressed_data_size, &compressed_aux_size); |
454 |
|
|
|
455 |
|
197 |
raw_size = outmap -> gx_pixelmap_aux_data_size + outmap -> gx_pixelmap_data_size; |
456 |
|
|
|
457 |
|
|
/* Test wheather the encoded data size is smaller that raw size. */ |
458 |
✓✓ |
197 |
if (compressed_aux_size + compressed_data_size < raw_size) |
459 |
|
|
{ |
460 |
|
184 |
outmap -> gx_pixelmap_data_size = compressed_data_size; |
461 |
|
184 |
outmap -> gx_pixelmap_aux_data_size = compressed_aux_size; |
462 |
|
184 |
outmap -> gx_pixelmap_flags |= GX_PIXELMAP_COMPRESSED; |
463 |
|
|
|
464 |
|
184 |
_gx_image_reader_pixel_read_callback_set(image_reader, &srcmap); |
465 |
|
|
|
466 |
|
184 |
status = _gx_image_reader_pixel_write_callback_set(image_reader, outmap); |
467 |
|
|
|
468 |
✓✓ |
184 |
if (status == GX_SUCCESS) |
469 |
|
|
{ |
470 |
|
183 |
status = _gx_image_reader_rle_encode(image_reader, outmap); |
471 |
|
|
} |
472 |
|
|
} |
473 |
|
|
else |
474 |
|
|
{ |
475 |
|
13 |
*outmap = srcmap; |
476 |
|
13 |
memset(&srcmap, 0, sizeof(GX_PIXELMAP)); |
477 |
|
|
} |
478 |
|
|
} |
479 |
|
|
} |
480 |
|
|
else |
481 |
|
|
{ |
482 |
|
621 |
*outmap = srcmap; |
483 |
|
621 |
memset(&srcmap, 0, sizeof(GX_PIXELMAP)); |
484 |
|
|
} |
485 |
|
|
|
486 |
|
|
/* Release memory that used to load decoded pixelmap data. */ |
487 |
✓✓ |
826 |
if (srcmap.gx_pixelmap_data) |
488 |
|
|
{ |
489 |
|
186 |
_gx_system_memory_free((VOID *)srcmap.gx_pixelmap_data); |
490 |
|
|
} |
491 |
|
|
|
492 |
✓✓ |
826 |
if (srcmap.gx_pixelmap_aux_data) |
493 |
|
|
{ |
494 |
|
17 |
_gx_system_memory_free((VOID *)srcmap.gx_pixelmap_aux_data); |
495 |
|
|
} |
496 |
|
|
|
497 |
✓✓ |
826 |
if (image_reader -> gx_image_reader_png_trans) |
498 |
|
|
{ |
499 |
|
49 |
_gx_system_memory_free((VOID *)image_reader -> gx_image_reader_png_trans); |
500 |
|
|
} |
501 |
|
|
|
502 |
✓✓ |
826 |
if (status != GX_SUCCESS) |
503 |
|
|
{ |
504 |
✓✓ |
17 |
if (outmap -> gx_pixelmap_data) |
505 |
|
|
{ |
506 |
|
5 |
_gx_system_memory_free((VOID *)outmap -> gx_pixelmap_data); |
507 |
|
5 |
outmap -> gx_pixelmap_data = GX_NULL; |
508 |
|
|
} |
509 |
|
|
|
510 |
✓✓ |
17 |
if (outmap -> gx_pixelmap_aux_data) |
511 |
|
|
{ |
512 |
|
1 |
_gx_system_memory_free((VOID *)outmap -> gx_pixelmap_aux_data); |
513 |
|
1 |
outmap -> gx_pixelmap_aux_data = GX_NULL; |
514 |
|
|
} |
515 |
|
|
} |
516 |
|
|
|
517 |
|
826 |
return status; |
518 |
|
|
} |
519 |
|
|
#endif |
520 |
|
|
|