mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

[libpng16] Quieted -Wsign-compare and -Wclobber compiler warnings in

Browse Source 
contrib/pngminus/*.c
This commit is contained in:
Glenn Randers-Pehrson
2014-06-13 11:06:33 -05:00
parent 212fd5745d
commit f36a94207c
4 changed files with 44 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

27
contrib/pngminus/png2pnm.c
View File

@@ -52,7 +52,8 @@
int main (int argc, char *argv[]);
void usage ();
BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL alpha);
BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw,
BOOL alpha);
/*
* main
@@ -85,7 +86,8 @@ int main(int argc, char *argv[])
if ((fp_al = fopen (argv[argi], "wb")) == NULL)
{
fprintf (stderr, "PNM2PNG\n");
fprintf (stderr, "Error: can not create alpha-channel file %s\n", argv[argi]);
fprintf (stderr, "Error: can not create alpha-channel file %s\n",
argv[argi]);
exit (1);
}
break;
@@ -176,9 +178,11 @@ void usage()
fprintf (stderr, "Usage: png2pnm [options] <file>.png [<file>.pnm]\n");
fprintf (stderr, " or: ... | png2pnm [options]\n");
fprintf (stderr, "Options:\n");
fprintf (stderr, " -r[aw] write pnm-file in binary format (P4/P5/P6) (default)\n");
fprintf (stderr,
" -r[aw] write pnm-file in binary format (P4/P5/P6) (default)\n");
fprintf (stderr, " -n[oraw] write pnm-file in ascii format (P1/P2/P3)\n");
fprintf (stderr, " -a[lpha] <file>.pgm write PNG alpha channel as pgm-file\n");
fprintf (stderr,
" -a[lpha] <file>.pgm write PNG alpha channel as pgm-file\n");
fprintf (stderr, " -h | -? print this help-information\n");
}
@@ -186,7 +190,8 @@ void usage()
* png2pnm
*/
BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL alpha)
BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file,
volatile BOOL raw, BOOL alpha)
{
png_struct *png_ptr = NULL;
png_info *info_ptr = NULL;
@@ -315,12 +320,14 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
/* row_bytes is the width x number of channels x (bit-depth / 8) */
row_bytes = png_get_rowbytes (png_ptr, info_ptr);
if ((png_pixels = (png_byte *) malloc (row_bytes * height * sizeof (png_byte))) == NULL) {
if ((png_pixels = (png_byte *)
malloc (row_bytes * height * sizeof (png_byte))) == NULL) {
png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
return FALSE;
}
if ((row_pointers = (png_byte **) malloc (height * sizeof (png_bytep))) == NULL)
if ((row_pointers = (png_byte **)
malloc (height * sizeof (png_bytep))) == NULL)
{
png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
free (png_pixels);
@@ -329,7 +336,7 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
}
/* set the individual row_pointers to point at the correct offsets */
for (i = 0; i < (height); i++)
for (i = 0; i < ((int) height); i++)
row_pointers[i] = png_pixels + i * row_bytes;
/* now we can go ahead and just read the whole image */
@@ -372,9 +379,9 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file, BOOL raw, BOOL a
/* write data to PNM file */
pix_ptr = png_pixels;
for (row = 0; row < height; row++)
for (row = 0; row < (int) height; row++)
{
for (col = 0; col < width; col++)
for (col = 0; col < (int) width; col++)
{
for (i = 0; i < (channels - alpha_present); i++)
{