diff options
Diffstat (limited to 'pngpread.c')
| -rw-r--r-- | pngpread.c | 28 |
1 files changed, 13 insertions, 15 deletions
diff --git a/pngpread.c b/pngpread.c index dad6499ca..abf1dcb4d 100644 --- a/pngpread.c +++ b/pngpread.c @@ -1,7 +1,7 @@ /* pngpread.c - read a png file in push mode * - * libpng 1.0.2 - June 14, 1998 + * libpng 1.0.2a - December 29, 1998 * For conditions of distribution and use, see copyright notice in png.h * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. * Copyright (c) 1996, 1997 Andreas Dilger @@ -92,7 +92,7 @@ png_push_read_sig(png_structp png_ptr, png_infop info_ptr) num_to_check = png_ptr->buffer_size; } - png_push_fill_buffer(png_ptr, &(info_ptr->signature[num_checked]), + png_push_fill_buffer(png_ptr, &(info_ptr->signature[num_checked]), num_to_check); png_ptr->sig_bytes += num_to_check; @@ -466,7 +466,7 @@ png_push_save_buffer(png_structp png_ptr) new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256; old_buffer = png_ptr->save_buffer; - png_ptr->save_buffer = (png_bytep)png_malloc(png_ptr, + png_ptr->save_buffer = (png_bytep)png_malloc(png_ptr, (png_uint_32)new_max); png_memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size); png_free(png_ptr, old_buffer); @@ -630,7 +630,7 @@ png_push_process_row(png_structp png_ptr) png_ptr->row_info.channels = png_ptr->channels; png_ptr->row_info.bit_depth = png_ptr->bit_depth; png_ptr->row_info.pixel_depth = png_ptr->pixel_depth; - + png_ptr->row_info.rowbytes = ((png_ptr->row_info.width * (png_uint_32)png_ptr->row_info.pixel_depth + 7) >> 3); @@ -781,6 +781,7 @@ png_read_push_finish_row(png_structp png_ptr) png_ptr->pass++; if (png_ptr->pass >= 7) break; + png_ptr->iwidth = (png_ptr->width + png_pass_inc[png_ptr->pass] - 1 - png_pass_start[png_ptr->pass]) / @@ -789,18 +790,15 @@ png_read_push_finish_row(png_structp png_ptr) png_ptr->irowbytes = ((png_ptr->iwidth * png_ptr->pixel_depth + 7) >> 3) + 1; - if (!(png_ptr->transformations & PNG_INTERLACE)) - { - png_ptr->num_rows = (png_ptr->height + - png_pass_yinc[png_ptr->pass] - 1 - - png_pass_ystart[png_ptr->pass]) / - png_pass_yinc[png_ptr->pass]; - if (!(png_ptr->num_rows)) - continue; - } if (png_ptr->transformations & PNG_INTERLACE) break; - } while (png_ptr->iwidth == 0); + + png_ptr->num_rows = (png_ptr->height + + png_pass_yinc[png_ptr->pass] - 1 - + png_pass_ystart[png_ptr->pass]) / + png_pass_yinc[png_ptr->pass]; + + } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0); } } @@ -826,7 +824,7 @@ png_push_handle_tEXt(png_structp png_ptr, png_infop info_ptr, png_uint_32 length } #endif - png_ptr->current_text = (png_charp)png_malloc(png_ptr, + png_ptr->current_text = (png_charp)png_malloc(png_ptr, (png_uint_32)(length+1)); png_ptr->current_text[length] = '\0'; png_ptr->current_text_ptr = png_ptr->current_text; |