diff options
Diffstat (limited to 'pngread.c')
| -rw-r--r-- | pngread.c | 92 |
1 files changed, 43 insertions, 49 deletions
@@ -24,7 +24,7 @@ /* Create a PNG structure for reading, and allocate any memory needed. */ png_structp PNGAPI png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn) + png_error_ptr error_fn, png_error_ptr warn_fn) { #ifdef PNG_USER_MEM_SUPPORTED @@ -37,8 +37,8 @@ png_create_read_struct(png_const_charp user_png_ver, png_voidp error_ptr, */ png_structp PNGAPI png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, - png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, - png_malloc_ptr malloc_fn, png_free_ptr free_fn) + png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, + png_malloc_ptr malloc_fn, png_free_ptr free_fn) { #endif /* PNG_USER_MEM_SUPPORTED */ @@ -112,7 +112,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, } while (png_libpng_ver[i++]); } else - png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; + png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH; if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH) @@ -130,21 +130,21 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, char msg[80]; if (user_png_ver) { - png_snprintf(msg, 80, - "Application was compiled with png.h from libpng-%.20s", - user_png_ver); - png_warning(png_ptr, msg); + png_snprintf(msg, 80, + "Application was compiled with png.h from libpng-%.20s", + user_png_ver); + png_warning(png_ptr, msg); } png_snprintf(msg, 80, - "Application is running with png.c from libpng-%.20s", - png_libpng_ver); + "Application is running with png.c from libpng-%.20s", + png_libpng_ver); png_warning(png_ptr, msg); #endif #ifdef PNG_ERROR_NUMBERS_SUPPORTED png_ptr->flags = 0; #endif png_warning(png_ptr, - "Incompatible libpng version in application and library"); + "Incompatible libpng version in application and library"); png_cleanup_needed = 1; } @@ -155,9 +155,9 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, /* Initialize zbuf - compression buffer */ png_ptr->zbuf_size = PNG_ZBUF_SIZE; png_ptr->zbuf = (png_bytep)png_malloc_warn(png_ptr, - png_ptr->zbuf_size); + png_ptr->zbuf_size); if (png_ptr->zbuf == NULL) - png_cleanup_needed = 1; + png_cleanup_needed = 1; } png_ptr->zstream.zalloc = png_zalloc; png_ptr->zstream.zfree = png_zfree; @@ -185,7 +185,7 @@ png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, png_ptr->zbuf = NULL; #ifdef PNG_USER_MEM_SUPPORTED png_destroy_struct_2((png_voidp)png_ptr, - (png_free_ptr)free_fn, (png_voidp)mem_ptr); + (png_free_ptr)free_fn, (png_voidp)mem_ptr); #else png_destroy_struct((png_voidp)png_ptr); #endif @@ -308,8 +308,8 @@ png_read_info(png_structp png_ptr, png_infop info_ptr) * matching the chunk name rather than a linear search. */ if (!png_memcmp(chunk_name, png_IDAT, 4)) - if (png_ptr->mode & PNG_AFTER_IDAT) - png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT; + if (png_ptr->mode & PNG_AFTER_IDAT) + png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT; if (!png_memcmp(chunk_name, png_IHDR, 4)) png_handle_IHDR(png_ptr, info_ptr, length); @@ -328,7 +328,7 @@ png_read_info(png_structp png_ptr, png_infop info_ptr) if (!(png_ptr->mode & PNG_HAVE_IHDR)) png_error(png_ptr, "Missing IHDR before IDAT"); else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - !(png_ptr->mode & PNG_HAVE_PLTE)) + !(png_ptr->mode & PNG_HAVE_PLTE)) png_error(png_ptr, "Missing PLTE before IDAT"); break; } @@ -341,7 +341,7 @@ png_read_info(png_structp png_ptr, png_infop info_ptr) if (!(png_ptr->mode & PNG_HAVE_IHDR)) png_error(png_ptr, "Missing IHDR before IDAT"); else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE && - !(png_ptr->mode & PNG_HAVE_PLTE)) + !(png_ptr->mode & PNG_HAVE_PLTE)) png_error(png_ptr, "Missing PLTE before IDAT"); png_ptr->idat_size = length; @@ -434,7 +434,8 @@ png_read_update_info(png_structp png_ptr, png_infop info_ptr) png_read_start_row(png_ptr); else png_warning(png_ptr, - "Ignoring extra png_read_update_info() call; row buffer not reallocated"); + "Ignoring extra png_read_update_info() call;" + " row buffer not reallocated"); png_read_transform_info(png_ptr, info_ptr); } @@ -463,7 +464,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) { PNG_IDAT; PNG_CONST int png_pass_dsp_mask[7] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, - 0xff}; + 0xff}; PNG_CONST int png_pass_mask[7] = {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff}; int ret; @@ -471,7 +472,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) return; png_debug2(1, "in png_read_row (row %lu, pass %d)", - (unsigned long) png_ptr->row_number, png_ptr->pass); + (unsigned long) png_ptr->row_number, png_ptr->pass); if (!(png_ptr->flags & PNG_FLAG_ROW_INIT)) png_read_start_row(png_ptr); @@ -610,7 +611,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) if (png_ptr->zbuf_size > png_ptr->idat_size) png_ptr->zstream.avail_in = (uInt)png_ptr->idat_size; png_crc_read(png_ptr, png_ptr->zbuf, - (png_size_t)png_ptr->zstream.avail_in); + (png_size_t)png_ptr->zstream.avail_in); png_ptr->idat_size -= png_ptr->zstream.avail_in; } ret = inflate(&png_ptr->zstream, Z_PARTIAL_FLUSH); @@ -625,7 +626,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) } if (ret != Z_OK) png_error(png_ptr, png_ptr->zstream.msg ? png_ptr->zstream.msg : - "Decompression error"); + "Decompression error"); } while (png_ptr->zstream.avail_out); @@ -639,14 +640,14 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) if (png_ptr->row_buf[0]) png_read_filter_row(png_ptr, &(png_ptr->row_info), - png_ptr->row_buf + 1, png_ptr->prev_row + 1, - (int)(png_ptr->row_buf[0])); + png_ptr->row_buf + 1, png_ptr->prev_row + 1, + (int)(png_ptr->row_buf[0])); png_memcpy(png_ptr->prev_row, png_ptr->row_buf, png_ptr->rowbytes + 1); #ifdef PNG_MNG_FEATURES_SUPPORTED if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) && - (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING)) + (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING)) { /* Intrapixel differencing */ png_do_read_intrapixel(&(png_ptr->row_info), png_ptr->row_buf + 1); @@ -670,11 +671,9 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) png_do_read_interlace(png_ptr); if (dsp_row != NULL) - png_combine_row(png_ptr, dsp_row, - png_pass_dsp_mask[png_ptr->pass]); + png_combine_row(png_ptr, dsp_row, png_pass_dsp_mask[png_ptr->pass]); if (row != NULL) - png_combine_row(png_ptr, row, - png_pass_mask[png_ptr->pass]); + png_combine_row(png_ptr, row, png_pass_mask[png_ptr->pass]); } else #endif @@ -718,7 +717,7 @@ png_read_row(png_structp png_ptr, png_bytep row, png_bytep dsp_row) void PNGAPI png_read_rows(png_structp png_ptr, png_bytepp row, - png_bytepp display_row, png_uint_32 num_rows) + png_bytepp display_row, png_uint_32 num_rows) { png_uint_32 i; png_bytepp rp; @@ -785,7 +784,7 @@ png_read_image(png_structp png_ptr, png_bytepp image) #else if (png_ptr->interlaced) png_error(png_ptr, - "Cannot read interlaced image -- interlace handler disabled"); + "Cannot read interlaced image -- interlace handler disabled"); pass = 1; #endif @@ -984,7 +983,7 @@ png_read_end(png_structp png_ptr, png_infop info_ptr) /* Free all memory used by the read */ void PNGAPI png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, - png_infopp end_info_ptr_ptr) + png_infopp end_info_ptr_ptr) { png_structp png_ptr = NULL; png_infop info_ptr = NULL, end_info_ptr = NULL; @@ -1035,7 +1034,7 @@ png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, #endif #ifdef PNG_USER_MEM_SUPPORTED png_destroy_struct_2((png_voidp)end_info_ptr, (png_free_ptr)free_fn, - (png_voidp)mem_ptr); + (png_voidp)mem_ptr); #else png_destroy_struct((png_voidp)end_info_ptr); #endif @@ -1284,40 +1283,35 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, #endif #ifdef PNG_READ_BGR_SUPPORTED - /* Flip the RGB pixels to BGR (or RGBA to BGRA) - */ + /* Flip the RGB pixels to BGR (or RGBA to BGRA) */ if (transforms & PNG_TRANSFORM_BGR) png_set_bgr(png_ptr); #endif #ifdef PNG_READ_SWAP_ALPHA_SUPPORTED - /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) - */ + /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */ if (transforms & PNG_TRANSFORM_SWAP_ALPHA) - png_set_swap_alpha(png_ptr); + png_set_swap_alpha(png_ptr); #endif #ifdef PNG_READ_SWAP_SUPPORTED - /* Swap bytes of 16 bit files to least significant byte first - */ + /* Swap bytes of 16 bit files to least significant byte first */ if (transforms & PNG_TRANSFORM_SWAP_ENDIAN) png_set_swap(png_ptr); #endif /* Added at libpng-1.2.41 */ #ifdef PNG_READ_INVERT_ALPHA_SUPPORTED - /* Invert the alpha channel from opacity to transparency - */ + /* Invert the alpha channel from opacity to transparency */ if (transforms & PNG_TRANSFORM_INVERT_ALPHA) - png_set_invert_alpha(png_ptr); + png_set_invert_alpha(png_ptr); #endif /* Added at libpng-1.2.41 */ #ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED - /* Expand grayscale image to RGB - */ + /* Expand grayscale image to RGB */ if (transforms & PNG_TRANSFORM_GRAY_TO_RGB) - png_set_gray_to_rgb(png_ptr); + png_set_gray_to_rgb(png_ptr); #endif /* We don't handle adding filler bytes */ @@ -1333,10 +1327,10 @@ png_read_png(png_structp png_ptr, png_infop info_ptr, png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); if (info_ptr->row_pointers == NULL) { - png_uint_32 iptr; + png_uint_32 iptr; info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr, - info_ptr->height * png_sizeof(png_bytep)); + info_ptr->height * png_sizeof(png_bytep)); for (iptr=0; iptr<info_ptr->height; iptr++) info_ptr->row_pointers[iptr] = NULL; |