diff options
Diffstat (limited to 'contrib/gregbook/readpng2.c')
| -rw-r--r-- | contrib/gregbook/readpng2.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/contrib/gregbook/readpng2.c b/contrib/gregbook/readpng2.c index e179db71e..e6a132eca 100644 --- a/contrib/gregbook/readpng2.c +++ b/contrib/gregbook/readpng2.c @@ -69,6 +69,7 @@ static void readpng2_row_callback(png_structp png_ptr, png_bytep new_row, png_uint_32 row_num, int pass); static void readpng2_end_callback(png_structp png_ptr, png_infop info_ptr); static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg); +static void readpng2_warning_handler(png_structp png_ptr, png_const_charp msg); @@ -104,7 +105,7 @@ int readpng2_init(mainprog_info *mainprog_ptr) /* could also replace libpng warning-handler (final NULL), but no need: */ png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, mainprog_ptr, - readpng2_error_handler, NULL); + readpng2_error_handler, readpng2_warning_handler); if (!png_ptr) return 4; /* out of memory */ @@ -467,7 +468,11 @@ void readpng2_cleanup(mainprog_info *mainprog_ptr) } - +static void readpng2_warning_handler(png_structp png_ptr, png_const_charp msg) +{ + fprintf(stderr, "readpng2 libpng warning: %s\n", msg); + fflush(stderr); +} static void readpng2_error_handler(png_structp png_ptr, png_const_charp msg) |