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- raster/BMP/GIF/PCX/TIF: fix dealing with very large data (use

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`size_t` as appropriate)
- BMP: lessen heap memory usage by only `malloc()`ing a row, not
  whole file
- GIF: lessen heap memory usage by paging (also simplifies some
  function returns); use standard colour char map
- raster: add `raster_malloc()` to fail > 1GB (avoids very large
  output files that most systems can't handle; also lessens to
  some degree chances of being victim of OOM killer on Linux)
- GUI: printing scale dialog: set maxima on X-dim and resolution
  to keep scale <= 200
This commit is contained in:
gitlost 2023-12-22 21:29:54 +00:00
parent 6ff485e6fa
commit 070162214b
27 changed files with 354 additions and 370 deletions
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6
backend/pcx.c
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@ -48,9 +48,10 @@ INTERNAL int pcx_pixel_plot(struct zint_symbol *symbol, const unsigned char *pix
int run_count;
FILE *pcx_file;
pcx_header_t header;
int bytes_per_line = symbol->bitmap_width + (symbol->bitmap_width & 1); /* Must be even */
unsigned char previous;
const unsigned char *pb;
const int output_to_stdout = symbol->output_options & BARCODE_STDOUT; /* Suppress gcc -fanalyzer warning */
const int bytes_per_line = symbol->bitmap_width + (symbol->bitmap_width & 1); /* Must be even */
unsigned char *rle_row = (unsigned char *) z_alloca(bytes_per_line);
rle_row[bytes_per_line - 1] = 0; /* Will remain zero if bitmap_width odd */
@ -104,8 +105,7 @@ INTERNAL int pcx_pixel_plot(struct zint_symbol *symbol, const unsigned char *pix
fwrite(&header, sizeof(pcx_header_t), 1, pcx_file);
for (row = 0; row < symbol->bitmap_height; row++) {
const unsigned char *const pb = pixelbuf + row * symbol->bitmap_width;
for (row = 0, pb = pixelbuf; row < symbol->bitmap_height; row++, pb += symbol->bitmap_width) {
for (colour = 0; colour < header.number_of_planes; colour++) {
for (column = 0; column < symbol->bitmap_width; column++) {
const unsigned char ch = pb[column];