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Diffstat (limited to 'Build/source/libs/libpng/libpng-src/contrib/pngminus/pnm2png.c')
-rw-r--r--Build/source/libs/libpng/libpng-src/contrib/pngminus/pnm2png.c620
1 files changed, 0 insertions, 620 deletions
diff --git a/Build/source/libs/libpng/libpng-src/contrib/pngminus/pnm2png.c b/Build/source/libs/libpng/libpng-src/contrib/pngminus/pnm2png.c
deleted file mode 100644
index a2c2551da92..00000000000
--- a/Build/source/libs/libpng/libpng-src/contrib/pngminus/pnm2png.c
+++ /dev/null
@@ -1,620 +0,0 @@
-/*
- * pnm2png.c --- conversion from PBM/PGM/PPM-file to PNG-file
- * copyright (C) 1999-2019 by Willem van Schaik <willem at schaik dot com>
- *
- * This software is released under the MIT license. For conditions of
- * distribution and use, see the LICENSE file part of this package.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <fcntl.h>
-
-#ifndef BOOL
-#define BOOL unsigned char
-#endif
-#ifndef TRUE
-#define TRUE (BOOL) 1
-#endif
-#ifndef FALSE
-#define FALSE (BOOL) 0
-#endif
-
-/* make pnm2png verbose so we can find problems (needs to be before png.h) */
-#ifndef PNG_DEBUG
-#define PNG_DEBUG 0
-#endif
-
-#include "png.h"
-
-/* function prototypes */
-
-int main (int argc, char *argv[]);
-void usage ();
-BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file,
- BOOL interlace, BOOL alpha);
-void get_token (FILE *pnm_file, char *token_buf, size_t token_buf_size);
-png_uint_32 get_data (FILE *pnm_file, int depth);
-png_uint_32 get_value (FILE *pnm_file, int depth);
-
-/*
- * main
- */
-
-int main (int argc, char *argv[])
-{
- FILE *fp_rd = stdin;
- FILE *fp_al = NULL;
- FILE *fp_wr = stdout;
- BOOL interlace = FALSE;
- BOOL alpha = FALSE;
- int argi;
-
- for (argi = 1; argi < argc; argi++)
- {
- if (argv[argi][0] == '-')
- {
- switch (argv[argi][1])
- {
- case 'i':
- interlace = TRUE;
- break;
- case 'a':
- alpha = TRUE;
- argi++;
- if ((fp_al = fopen (argv[argi], "rb")) == NULL)
- {
- fprintf (stderr, "PNM2PNG\n");
- fprintf (stderr, "Error: alpha-channel file %s does not exist\n",
- argv[argi]);
- exit (1);
- }
- break;
- case 'h':
- case '?':
- usage ();
- exit (0);
- break;
- default:
- fprintf (stderr, "PNM2PNG\n");
- fprintf (stderr, "Error: unknown option %s\n", argv[argi]);
- usage ();
- exit (1);
- break;
- } /* end switch */
- }
- else if (fp_rd == stdin)
- {
- if ((fp_rd = fopen (argv[argi], "rb")) == NULL)
- {
- fprintf (stderr, "PNM2PNG\n");
- fprintf (stderr, "Error: file %s does not exist\n", argv[argi]);
- exit (1);
- }
- }
- else if (fp_wr == stdout)
- {
- if ((fp_wr = fopen (argv[argi], "wb")) == NULL)
- {
- fprintf (stderr, "PNM2PNG\n");
- fprintf (stderr, "Error: cannot create PNG-file %s\n", argv[argi]);
- exit (1);
- }
- }
- else
- {
- fprintf (stderr, "PNM2PNG\n");
- fprintf (stderr, "Error: too many parameters\n");
- usage ();
- exit (1);
- }
- } /* end for */
-
-#if defined(O_BINARY) && (O_BINARY != 0)
- /* set stdin/stdout to binary,
- * we're reading the PNM always! in binary format
- */
- if (fp_rd == stdin)
- setmode (fileno (stdin), O_BINARY);
- if (fp_wr == stdout)
- setmode (fileno (stdout), O_BINARY);
-#endif
-
- /* call the conversion program itself */
- if (pnm2png (fp_rd, fp_wr, fp_al, interlace, alpha) == FALSE)
- {
- fprintf (stderr, "PNM2PNG\n");
- fprintf (stderr, "Error: unsuccessful converting to PNG-image\n");
- exit (1);
- }
-
- /* close input file */
- fclose (fp_rd);
- /* close output file */
- fclose (fp_wr);
- /* close alpha file */
- if (alpha)
- fclose (fp_al);
-
- return 0;
-}
-
-/*
- * usage
- */
-
-void usage ()
-{
- fprintf (stderr, "PNM2PNG\n");
- fprintf (stderr, " by Willem van Schaik, 1999\n");
- fprintf (stderr, "Usage: pnm2png [options] <file>.<pnm> [<file>.png]\n");
- fprintf (stderr, " or: ... | pnm2png [options]\n");
- fprintf (stderr, "Options:\n");
- fprintf (stderr, " -i[nterlace] write png-file with interlacing on\n");
- fprintf (stderr,
- " -a[lpha] <file>.pgm read PNG alpha channel as pgm-file\n");
- fprintf (stderr, " -h | -? print this help-information\n");
-}
-
-/*
- * pnm2png
- */
-
-BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file,
- BOOL interlace, BOOL alpha)
-{
- png_struct *png_ptr = NULL;
- png_info *info_ptr = NULL;
- png_byte *png_pixels = NULL;
- png_byte **row_pointers = NULL;
- png_byte *pix_ptr = NULL;
- volatile png_uint_32 row_bytes;
-
- char type_token[16];
- char width_token[16];
- char height_token[16];
- char maxval_token[16];
- volatile int color_type = 1;
- unsigned long ul_width = 0, ul_alpha_width = 0;
- unsigned long ul_height = 0, ul_alpha_height = 0;
- unsigned long ul_maxval = 0;
- volatile png_uint_32 width = 0, height = 0;
- volatile png_uint_32 alpha_width = 0, alpha_height = 0;
- png_uint_32 maxval;
- volatile int bit_depth = 0;
- int channels = 0;
- int alpha_depth = 0;
- int alpha_present = 0;
- int row, col;
- BOOL raw, alpha_raw = FALSE;
-#if defined(PNG_WRITE_INVERT_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
- BOOL packed_bitmap = FALSE;
-#endif
- png_uint_32 tmp16;
- int i;
-
- /* read header of PNM file */
-
- get_token (pnm_file, type_token, sizeof (type_token));
- if (type_token[0] != 'P')
- {
- return FALSE;
- }
- else if ((type_token[1] == '1') || (type_token[1] == '4'))
- {
-#if defined(PNG_WRITE_INVERT_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
- raw = (type_token[1] == '4');
- color_type = PNG_COLOR_TYPE_GRAY;
- get_token (pnm_file, width_token, sizeof (width_token));
- sscanf (width_token, "%lu", &ul_width);
- width = (png_uint_32) ul_width;
- get_token (pnm_file, height_token, sizeof (height_token));
- sscanf (height_token, "%lu", &ul_height);
- height = (png_uint_32) ul_height;
- bit_depth = 1;
- packed_bitmap = TRUE;
-#else
- fprintf (stderr, "PNM2PNG built without PNG_WRITE_INVERT_SUPPORTED and\n");
- fprintf (stderr, "PNG_WRITE_PACK_SUPPORTED can't read PBM (P1,P4) files\n");
- return FALSE;
-#endif
- }
- else if ((type_token[1] == '2') || (type_token[1] == '5'))
- {
- raw = (type_token[1] == '5');
- color_type = PNG_COLOR_TYPE_GRAY;
- get_token (pnm_file, width_token, sizeof (width_token));
- sscanf (width_token, "%lu", &ul_width);
- width = (png_uint_32) ul_width;
- get_token (pnm_file, height_token, sizeof (height_token));
- sscanf (height_token, "%lu", &ul_height);
- height = (png_uint_32) ul_height;
- get_token (pnm_file, maxval_token, sizeof (maxval_token));
- sscanf (maxval_token, "%lu", &ul_maxval);
- maxval = (png_uint_32) ul_maxval;
-
- if (maxval <= 1)
- bit_depth = 1;
- else if (maxval <= 3)
- bit_depth = 2;
- else if (maxval <= 15)
- bit_depth = 4;
- else if (maxval <= 255)
- bit_depth = 8;
- else if (maxval <= 65535U)
- bit_depth = 16;
- else /* maxval > 65535U */
- return FALSE;
- }
- else if ((type_token[1] == '3') || (type_token[1] == '6'))
- {
- raw = (type_token[1] == '6');
- color_type = PNG_COLOR_TYPE_RGB;
- get_token (pnm_file, width_token, sizeof (width_token));
- sscanf (width_token, "%lu", &ul_width);
- width = (png_uint_32) ul_width;
- get_token (pnm_file, height_token, sizeof (height_token));
- sscanf (height_token, "%lu", &ul_height);
- height = (png_uint_32) ul_height;
- get_token (pnm_file, maxval_token, sizeof (maxval_token));
- sscanf (maxval_token, "%lu", &ul_maxval);
- maxval = (png_uint_32) ul_maxval;
- if (maxval <= 1)
- bit_depth = 1;
- else if (maxval <= 3)
- bit_depth = 2;
- else if (maxval <= 15)
- bit_depth = 4;
- else if (maxval <= 255)
- bit_depth = 8;
- else if (maxval <= 65535U)
- bit_depth = 16;
- else /* maxval > 65535U */
- return FALSE;
- }
- else
- {
- return FALSE;
- }
-
- /* read header of PGM file with alpha channel */
-
- if (alpha)
- {
- if (color_type == PNG_COLOR_TYPE_GRAY)
- color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
- if (color_type == PNG_COLOR_TYPE_RGB)
- color_type = PNG_COLOR_TYPE_RGB_ALPHA;
-
- get_token (alpha_file, type_token, sizeof (type_token));
- if (type_token[0] != 'P')
- {
- return FALSE;
- }
- else if ((type_token[1] == '2') || (type_token[1] == '5'))
- {
- alpha_raw = (type_token[1] == '5');
- get_token (alpha_file, width_token, sizeof (width_token));
- sscanf (width_token, "%lu", &ul_alpha_width);
- alpha_width = (png_uint_32) ul_alpha_width;
- if (alpha_width != width)
- return FALSE;
- get_token (alpha_file, height_token, sizeof (height_token));
- sscanf (height_token, "%lu", &ul_alpha_height);
- alpha_height = (png_uint_32) ul_alpha_height;
- if (alpha_height != height)
- return FALSE;
- get_token (alpha_file, maxval_token, sizeof (maxval_token));
- sscanf (maxval_token, "%lu", &ul_maxval);
- maxval = (png_uint_32) ul_maxval;
- if (maxval <= 1)
- alpha_depth = 1;
- else if (maxval <= 3)
- alpha_depth = 2;
- else if (maxval <= 15)
- alpha_depth = 4;
- else if (maxval <= 255)
- alpha_depth = 8;
- else if (maxval <= 65535U)
- alpha_depth = 16;
- else /* maxval > 65535U */
- return FALSE;
- if (alpha_depth != bit_depth)
- return FALSE;
- }
- else
- {
- return FALSE;
- }
- } /* end if alpha */
-
- /* calculate the number of channels and store alpha-presence */
- if (color_type == PNG_COLOR_TYPE_GRAY)
- channels = 1;
- else if (color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- channels = 2;
- else if (color_type == PNG_COLOR_TYPE_RGB)
- channels = 3;
- else if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- channels = 4;
-#if 0
- else
- channels = 0; /* cannot happen */
-#endif
-
- alpha_present = (channels - 1) % 2;
-
-#if defined(PNG_WRITE_INVERT_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
- if (packed_bitmap)
- {
- /* row data is as many bytes as can fit width x channels x bit_depth */
- row_bytes = (width * channels * bit_depth + 7) / 8;
- }
- else
-#endif
- {
- /* row_bytes is the width x number of channels x (bit-depth / 8) */
- row_bytes = width * channels * ((bit_depth <= 8) ? 1 : 2);
- }
-
- if ((row_bytes == 0) ||
- ((size_t) height > (size_t) (-1) / (size_t) row_bytes))
- {
- /* too big */
- return FALSE;
- }
- if ((png_pixels = (png_byte *)
- malloc ((size_t) row_bytes * (size_t) height)) == NULL)
- {
- /* out of memory */
- return FALSE;
- }
-
- /* read data from PNM file */
- pix_ptr = png_pixels;
-
- for (row = 0; row < (int) height; row++)
- {
-#if defined(PNG_WRITE_INVERT_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
- if (packed_bitmap)
- {
- for (i = 0; i < (int) row_bytes; i++)
- {
- /* png supports this format natively so no conversion is needed */
- *pix_ptr++ = get_data (pnm_file, 8);
- }
- }
- else
-#endif
- {
- for (col = 0; col < (int) width; col++)
- {
- for (i = 0; i < (channels - alpha_present); i++)
- {
- if (raw)
- {
- *pix_ptr++ = get_data (pnm_file, bit_depth);
- }
- else
- {
- if (bit_depth <= 8)
- {
- *pix_ptr++ = get_value (pnm_file, bit_depth);
- }
- else
- {
- tmp16 = get_value (pnm_file, bit_depth);
- *pix_ptr = (png_byte) ((tmp16 >> 8) & 0xFF);
- pix_ptr++;
- *pix_ptr = (png_byte) (tmp16 & 0xFF);
- pix_ptr++;
- }
- }
- }
-
- if (alpha) /* read alpha-channel from pgm file */
- {
- if (alpha_raw)
- {
- *pix_ptr++ = get_data (alpha_file, alpha_depth);
- }
- else
- {
- if (alpha_depth <= 8)
- {
- *pix_ptr++ = get_value (alpha_file, bit_depth);
- }
- else
- {
- tmp16 = get_value (alpha_file, bit_depth);
- *pix_ptr++ = (png_byte) ((tmp16 >> 8) & 0xFF);
- *pix_ptr++ = (png_byte) (tmp16 & 0xFF);
- }
- }
- } /* end if alpha */
- } /* end if packed_bitmap */
- } /* end for col */
- } /* end for row */
-
- /* prepare the standard PNG structures */
- png_ptr = png_create_write_struct (png_get_libpng_ver(NULL),
- NULL, NULL, NULL);
- if (!png_ptr)
- {
- free (png_pixels);
- return FALSE;
- }
- info_ptr = png_create_info_struct (png_ptr);
- if (!info_ptr)
- {
- png_destroy_write_struct (&png_ptr, NULL);
- free (png_pixels);
- return FALSE;
- }
-
-#if defined(PNG_WRITE_INVERT_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
- if (packed_bitmap == TRUE)
- {
- png_set_packing (png_ptr);
- png_set_invert_mono (png_ptr);
- }
-#endif
-
- if (setjmp (png_jmpbuf (png_ptr)))
- {
- png_destroy_write_struct (&png_ptr, &info_ptr);
- free (png_pixels);
- return FALSE;
- }
-
- /* initialize the png structure */
- png_init_io (png_ptr, png_file);
-
- /* we're going to write more or less the same PNG as the input file */
- png_set_IHDR (png_ptr, info_ptr, width, height, bit_depth, color_type,
- (!interlace) ? PNG_INTERLACE_NONE : PNG_INTERLACE_ADAM7,
- PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
-
- /* write the file header information */
- png_write_info (png_ptr, info_ptr);
-
- /* if needed we will allocate memory for an new array of row-pointers */
- if (row_pointers == NULL)
- {
- if ((row_pointers = (png_byte **)
- malloc (height * sizeof (png_byte *))) == NULL)
- {
- png_destroy_write_struct (&png_ptr, &info_ptr);
- free (png_pixels);
- return FALSE;
- }
- }
-
- /* set the individual row_pointers to point at the correct offsets */
- for (i = 0; i < (int) height; i++)
- row_pointers[i] = png_pixels + i * row_bytes;
-
- /* write out the entire image data in one call */
- png_write_image (png_ptr, row_pointers);
-
- /* write the additional chunks to the PNG file (not really needed) */
- png_write_end (png_ptr, info_ptr);
-
- /* clean up after the write, and free any memory allocated */
- png_destroy_write_struct (&png_ptr, &info_ptr);
-
- if (row_pointers != NULL)
- free (row_pointers);
- if (png_pixels != NULL)
- free (png_pixels);
-
- return TRUE;
-} /* end of pnm2png */
-
-/*
- * get_token - gets the first string after whitespace
- */
-
-void get_token (FILE *pnm_file, char *token_buf, size_t token_buf_size)
-{
- size_t i = 0;
- int ret;
-
- /* remove white-space and comment lines */
- do
- {
- ret = fgetc (pnm_file);
- if (ret == '#')
- {
- /* the rest of this line is a comment */
- do
- {
- ret = fgetc (pnm_file);
- }
- while ((ret != '\n') && (ret != '\r') && (ret != EOF));
- }
- if (ret == EOF) break;
- token_buf[i] = (char) ret;
- }
- while ((ret == '\n') || (ret == '\r') || (ret == ' '));
-
- /* read string */
- do
- {
- ret = fgetc (pnm_file);
- if (ret == EOF) break;
- if (++i == token_buf_size - 1) break;
- token_buf[i] = (char) ret;
- }
- while ((ret != '\n') && (ret != '\r') && (ret != ' '));
-
- token_buf[i] = '\0';
-
- return;
-}
-
-/*
- * get_data - takes first byte and converts into next pixel value,
- * taking as much bits as defined by bit-depth and
- * using the bit-depth to fill up a byte (0Ah -> AAh)
- */
-
-png_uint_32 get_data (FILE *pnm_file, int depth)
-{
- static int bits_left = 0;
- static int old_value = 0;
- static int mask = 0;
- int i;
- png_uint_32 ret_value;
-
- if (mask == 0)
- for (i = 0; i < depth; i++)
- mask = (mask >> 1) | 0x80;
-
- if (bits_left <= 0)
- {
- old_value = fgetc (pnm_file);
- bits_left = 8;
- }
-
- ret_value = old_value & mask;
- for (i = 1; i < (8 / depth); i++)
- ret_value = ret_value || (ret_value >> depth);
-
- old_value = (old_value << depth) & 0xFF;
- bits_left -= depth;
-
- return ret_value;
-}
-
-/*
- * get_value - takes first (numeric) string and converts into number,
- * using the bit-depth to fill up a byte (0Ah -> AAh)
- */
-
-png_uint_32 get_value (FILE *pnm_file, int depth)
-{
- static png_uint_32 mask = 0;
- char token[16];
- unsigned long ul_ret_value;
- png_uint_32 ret_value;
- int i = 0;
-
- if (mask == 0)
- for (i = 0; i < depth; i++)
- mask = (mask << 1) | 0x01;
-
- get_token (pnm_file, token, sizeof (token));
- sscanf (token, "%lu", &ul_ret_value);
- ret_value = (png_uint_32) ul_ret_value;
-
- ret_value &= mask;
-
- if (depth < 8)
- for (i = 0; i < (8 / depth); i++)
- ret_value = (ret_value << depth) || ret_value;
-
- return ret_value;
-}
-
-/* end of source */