mirror of
https://github.com/zint/zint
synced 2024-11-16 20:57:25 +13:00
Add buffer option
This commit is contained in:
hooper114
parent
13a8a80136
commit
7c1d8fdc5b
@ -61,6 +61,9 @@ struct zint_symbol *ZBarcode_Create()
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}
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symbol->row_height[i] = 0;
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}
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symbol->bitmap = NULL;
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symbol->bitmap_width = 0;
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symbol->bitmap_height = 0;
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return symbol;
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}
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@ -129,6 +132,7 @@ extern int grid_matrix(struct zint_symbol *symbol, unsigned char source[], int l
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#ifndef NO_PNG
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int png_handle(struct zint_symbol *symbol, int rotate_angle);
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int bmp_handle(struct zint_symbol *symbol, int rotate_angle);
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#endif
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extern int ps_plot(struct zint_symbol *symbol);
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@ -666,6 +670,29 @@ int ZBarcode_Print(struct zint_symbol *symbol, int rotate_angle)
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return error_number;
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}
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#ifndef NO_PNG
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int ZBarcode_Buffer(struct zint_symbol *symbol, int rotate_angle)
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{
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int error_number;
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switch(rotate_angle) {
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case 0:
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case 90:
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case 180:
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case 270:
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break;
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default:
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strcpy(symbol->errtxt, "Invalid rotation angle");
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return ERROR_INVALID_OPTION;
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break;
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}
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error_number = bmp_handle(symbol, rotate_angle);
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error_tag(symbol->errtxt, error_number);
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return error_number;
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}
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#endif
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int ZBarcode_Print_Rotated(struct zint_symbol *symbol, int rotate_angle) {
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/* Depreciated - will be removed in later version */
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return ZBarcode_Print(symbol, rotate_angle);
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@ -686,6 +713,23 @@ int ZBarcode_Encode_and_Print(struct zint_symbol *symbol, unsigned char *input,
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return error_number;
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}
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#ifndef NO_PNG
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int ZBarcode_Encode_and_Buffer(struct zint_symbol *symbol, unsigned char *input, int length, int rotate_angle)
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{
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int error_number;
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error_number = 0;
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error_number = ZBarcode_Encode(symbol, input, length);
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if(error_number != 0) {
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return error_number;
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}
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error_number = ZBarcode_Buffer(symbol, rotate_angle);
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return error_number;
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}
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#endif
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int ZBarcode_Encode_and_Print_Rotated(struct zint_symbol *symbol, unsigned char *input, int rotate_angle) {
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/* Depreciated - will be removed in later version */
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return ZBarcode_Encode_and_Print(symbol, input, rotate_angle, strlen((char *)input));
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@ -759,3 +803,18 @@ int ZBarcode_Encode_File_and_Print(struct zint_symbol *symbol, char *filename, i
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return ZBarcode_Print(symbol, rotate_angle);
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}
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#ifndef NO_PNG
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int ZBarcode_Encode_File_and_Buffer(struct zint_symbol *symbol, char *filename, int rotate_angle)
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{
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int error_number;
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error_number = 0;
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error_number = ZBarcode_Encode_File(symbol, filename);
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if(error_number != 0) {
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return error_number;
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}
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return ZBarcode_Buffer(symbol, rotate_angle);
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}
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#endif
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201
backend/png.c
201
backend/png.c
@ -2,7 +2,7 @@
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/*
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libzint - the open source barcode library
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Copyright (C) 2008 Robin Stuart <robin@zint.org.uk>
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Copyright (C) 2009 Robin Stuart <robin@zint.org.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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@ -19,6 +19,15 @@
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51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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This file initially included the code to output barcodes to PNG images. To this has been
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added routines to ouput the symbol in a byte array for manipulation within an external
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program - the difference can be seen as "PNG mode" and "BMP mode". The reason they have been
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lumped together here is because they use much the same functions and so it saves memory to
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put them together. The problem is that it means the "BMP mode" functions are not available
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unless PNG encoding is enabled. This is a compromise and I hope it doesn't cause anybody problems.
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*/
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#include <stdio.h>
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#ifdef _MSC_VER
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#include <fcntl.h>
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@ -41,6 +50,9 @@
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#define SSET "0123456789ABCDEF"
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#define PNG_DATA 100
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#define BMP_DATA 200
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struct mainprog_info_type {
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long width;
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long height;
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@ -65,7 +77,7 @@ static void writepng_error_handler(png_structp png_ptr, png_const_charp msg)
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longjmp(graphic->jmpbuf, 1);
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}
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int png_to_file(struct zint_symbol *symbol, int image_height, int image_width, char *pixelbuf, int rotate_angle)
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int png_pixel_plot(struct zint_symbol *symbol, int image_height, int image_width, char *pixelbuf, int rotate_angle)
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{
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struct mainprog_info_type wpng_info;
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struct mainprog_info_type *graphic;
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@ -297,6 +309,165 @@ int png_to_file(struct zint_symbol *symbol, int image_height, int image_width, c
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return 0;
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}
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int bmp_pixel_plot(struct zint_symbol *symbol, int image_height, int image_width, char *pixelbuf, int rotate_angle)
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{
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unsigned long rowbytes;
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int i, row, column, errno;
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int fgred, fggrn, fgblu, bgred, bggrn, bgblu;
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switch(rotate_angle) {
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case 0:
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case 180:
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symbol->bitmap_width = image_width;
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symbol->bitmap_height = image_height;
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break;
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case 90:
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case 270:
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symbol->bitmap_width = image_height;
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symbol->bitmap_height = image_width;
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break;
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}
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if (symbol->bitmap != NULL)
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free(symbol->bitmap);
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symbol->bitmap = (char *) malloc(image_width * image_height * 3);
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/* sort out colour options */
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to_upper((unsigned char*)symbol->fgcolour);
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to_upper((unsigned char*)symbol->bgcolour);
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if(strlen(symbol->fgcolour) != 6) {
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strcpy(symbol->errtxt, "Malformed foreground colour target");
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return ERROR_INVALID_OPTION;
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}
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if(strlen(symbol->bgcolour) != 6) {
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strcpy(symbol->errtxt, "Malformed background colour target");
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return ERROR_INVALID_OPTION;
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}
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errno = is_sane(SSET, (unsigned char*)symbol->fgcolour, strlen(symbol->fgcolour));
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if (errno == ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "Malformed foreground colour target");
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return ERROR_INVALID_OPTION;
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}
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errno = is_sane(SSET, (unsigned char*)symbol->bgcolour, strlen(symbol->fgcolour));
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if (errno == ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "Malformed background colour target");
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return ERROR_INVALID_OPTION;
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}
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fgred = (16 * ctoi(symbol->fgcolour[0])) + ctoi(symbol->fgcolour[1]);
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fggrn = (16 * ctoi(symbol->fgcolour[2])) + ctoi(symbol->fgcolour[3]);
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fgblu = (16 * ctoi(symbol->fgcolour[4])) + ctoi(symbol->fgcolour[5]);
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bgred = (16 * ctoi(symbol->bgcolour[0])) + ctoi(symbol->bgcolour[1]);
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bggrn = (16 * ctoi(symbol->bgcolour[2])) + ctoi(symbol->bgcolour[3]);
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bgblu = (16 * ctoi(symbol->bgcolour[4])) + ctoi(symbol->bgcolour[5]);
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/* set rowbytes - depends on picture depth */
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rowbytes = symbol->bitmap_width * 3;
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/* Pixel Plotting */
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i = 0;
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switch(rotate_angle) {
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case 0: /* Plot the right way up */
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for(row = 0; row < image_height; row++) {
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for(column = 0; column < image_width; column++) {
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switch(*(pixelbuf + (image_width * row) + column))
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{
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case '1':
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symbol->bitmap[i++] = fgred;
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symbol->bitmap[i++] = fggrn;
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symbol->bitmap[i++] = fgblu;
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break;
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default:
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symbol->bitmap[i++] = bgred;
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symbol->bitmap[i++] = bggrn;
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symbol->bitmap[i++] = bgblu;
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break;
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}
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}
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}
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break;
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case 90: /* Plot 90 degrees clockwise */
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for(row = 0; row < image_width; row++) {
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for(column = 0; column < image_height; column++) {
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switch(*(pixelbuf + (image_width * (image_height - column - 1)) + row))
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{
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case '1':
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symbol->bitmap[i++] = fgred;
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symbol->bitmap[i++] = fggrn;
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symbol->bitmap[i++] = fgblu;
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break;
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default:
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symbol->bitmap[i++] = bgred;
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symbol->bitmap[i++] = bggrn;
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symbol->bitmap[i++] = bgblu;
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break;
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}
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}
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}
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break;
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case 180: /* Plot upside down */
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for(row = 0; row < image_height; row++) {
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for(column = 0; column < image_width; column++) {
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switch(*(pixelbuf + (image_width * (image_height - row - 1)) + (image_width - column - 1)))
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{
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case '1':
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symbol->bitmap[i++] = fgred;
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symbol->bitmap[i++] = fggrn;
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symbol->bitmap[i++] = fgblu;
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break;
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default:
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symbol->bitmap[i++] = bgred;
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symbol->bitmap[i++] = bggrn;
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symbol->bitmap[i++] = bgblu;
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break;
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}
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}
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}
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break;
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case 270: /* Plot 90 degrees anti-clockwise */
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for(row = 0; row < image_width; row++) {
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for(column = 0; column < image_height; column++) {
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switch(*(pixelbuf + (image_width * column) + (image_width - row - 1)))
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{
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case '1':
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symbol->bitmap[i++] = fgred;
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symbol->bitmap[i++] = fggrn;
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symbol->bitmap[i++] = fgblu;
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break;
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default:
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symbol->bitmap[i++] = bgred;
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symbol->bitmap[i++] = bggrn;
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symbol->bitmap[i++] = bgblu;
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break;
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}
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}
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}
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break;
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}
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return 0;
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}
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int png_to_file(struct zint_symbol *symbol, int image_height, int image_width, char *pixelbuf, int rotate_angle, int image_type)
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{
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int error_number;
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if(image_type == PNG_DATA) {
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error_number = png_pixel_plot(symbol, image_height, image_width, pixelbuf, rotate_angle);
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} else {
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error_number = bmp_pixel_plot(symbol, image_height, image_width, pixelbuf, rotate_angle);
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}
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return error_number;
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}
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void draw_bar(char *pixelbuf, int xpos, int xlen, int ypos, int ylen, int image_width, int image_height)
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{
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/* Draw a rectangle */
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@ -412,7 +583,7 @@ void draw_string(char *pixbuf, char input_string[], int xposn, int yposn, int im
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}
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int maxi_png_plot(struct zint_symbol *symbol, int rotate_angle)
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int maxi_png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type)
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{
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int i, row, column, xposn, yposn;
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int image_height, image_width;
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@ -466,7 +637,7 @@ int maxi_png_plot(struct zint_symbol *symbol, int rotate_angle)
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draw_bar(pixelbuf, 300 + ((symbol->border_width + symbol->whitespace_width + symbol->whitespace_width) * scaler), symbol->border_width * scaler, 0, image_height, image_width, image_height);
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}
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error_number=png_to_file(symbol, image_height, image_width, pixelbuf, rotate_angle);
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error_number=png_to_file(symbol, image_height, image_width, pixelbuf, rotate_angle, data_type);
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free(pixelbuf);
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return error_number;
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}
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@ -504,7 +675,7 @@ void to_latin1(unsigned char source[], unsigned char preprocessed[])
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return;
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}
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int png_plot(struct zint_symbol *symbol, int rotate_angle)
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int png_plot(struct zint_symbol *symbol, int rotate_angle, int data_type)
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{
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int textdone, main_width, comp_offset, large_bar_count;
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char textpart[10], addon[6];
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@ -912,7 +1083,7 @@ int png_plot(struct zint_symbol *symbol, int rotate_angle)
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draw_string(pixelbuf, (char*)local_text, textpos, default_text_posn, image_width, image_height);
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}
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error_number=png_to_file(symbol, image_height, image_width, pixelbuf, rotate_angle);
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error_number=png_to_file(symbol, image_height, image_width, pixelbuf, rotate_angle, data_type);
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free(pixelbuf);
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return error_number;
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}
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@ -922,10 +1093,24 @@ int png_handle(struct zint_symbol *symbol, int rotate_angle)
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int error;
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if(symbol->symbology == BARCODE_MAXICODE) {
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error = maxi_png_plot(symbol, rotate_angle);
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error = maxi_png_plot(symbol, rotate_angle, PNG_DATA);
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} else {
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error = png_plot(symbol, rotate_angle);
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error = png_plot(symbol, rotate_angle, PNG_DATA);
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}
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return error;
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}
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int bmp_handle(struct zint_symbol *symbol, int rotate_angle)
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{
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int error;
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if(symbol->symbology == BARCODE_MAXICODE) {
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error = maxi_png_plot(symbol, rotate_angle, BMP_DATA);
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} else {
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error = png_plot(symbol, rotate_angle, BMP_DATA);
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}
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return error;
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}
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@ -2,7 +2,7 @@
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/*
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libzint - the open source barcode library
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Copyright (C) 2008 Robin Stuart <robin@zint.org.uk>
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Copyright (C) 2009 Robin Stuart <robin@zint.org.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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@ -1,7 +1,7 @@
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/* zint.h - definitions for libzint
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libzint - the open source barcode library
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Copyright (C) 2008 Robin Stuart <robin@zint.org.uk>
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Copyright (C) 2009 Robin Stuart <robin@zint.org.uk>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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@ -46,6 +46,9 @@ struct zint_symbol {
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unsigned char encoded_data[178][143];
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int row_height[178]; /* Largest symbol is 177x177 QR Code */
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char errtxt[100];
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char *bitmap;
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int bitmap_width;
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int bitmap_height;
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};
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/* Tbarcode 7 codes */
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@ -183,6 +186,10 @@ ZINT_EXTERN int ZBarcode_Print(struct zint_symbol *symbol, int rotate_angle);
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ZINT_EXTERN int ZBarcode_Encode_and_Print(struct zint_symbol *symbol, unsigned char *input, int length, int rotate_angle);
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ZINT_EXTERN int ZBarcode_Encode_File_and_Print(struct zint_symbol *symbol, char *filename, int rotate_angle);
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ZINT_EXTERN int ZBarcode_Buffer(struct zint_symbol *symbol, int rotate_angle);
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ZINT_EXTERN int ZBarcide_Encode_and_Buffer(struct zint_symbol *symbol, unsigned char *input, int length, int rotate_angle);
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ZINT_EXTERN int ZBarcode_Encode_File_and_Buffer(struct zint_symbol *symbol, char *filename, int rotate_angle);
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ZINT_EXTERN int ZBarcode_ValidID(int symbol_id);
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/* Depreciated */
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