1 from libc.stdio cimport (

     2         FILE,

     3 )

     4 

     5 cdef extern from "pngtile.h" :

     6     struct pt_ctx :

     7         pass

     8 

     9     struct pt_image :

    10         pass

    11 

    12     enum pt_open_mode :

    13         PT_OPEN_READ    # 0

    14         PT_OPEN_UPDATE

    15 

    16     enum pt_cache_status :

    17         PT_CACHE_ERROR  # -1

    18         PT_CACHE_FRESH

    19         PT_CACHE_NONE

    20         PT_CACHE_STALE

    21         PT_CACHE_INCOMPAT

    22 

    23     struct pt_image_info :

    24         size_t img_width, img_height, img_bpp

    25         int image_mtime, cache_mtime, cache_version

    26         size_t image_bytes, cache_bytes

    27         size_t cache_blocks

    28 

    29     struct pt_image_params :

    30         int background_color[4]

    31     

    32     struct pt_tile_info :

    33         size_t width, height

    34         size_t x, y

    35         int zoom

    36 

    37     ctypedef pt_image_info* const_image_info_ptr "const struct pt_image_info *"

    38     

    39     ## functions

    40     int pt_image_open (pt_image **image_ptr, pt_ctx *ctx, char *png_path, int cache_mode) nogil

    41     int pt_image_info_ "pt_image_info" (pt_image *image, pt_image_info **info_ptr) nogil

    42     int pt_image_status (pt_image *image) nogil

    43     int pt_image_load (pt_image *image) nogil

    44     int pt_image_update (pt_image *image, pt_image_params *params) nogil

    45     int pt_image_tile_file (pt_image *image, pt_tile_info *info, FILE *out) nogil

    46     int pt_image_tile_mem (pt_image *image, pt_tile_info *info, char **buf_ptr, size_t *len_ptr) nogil

    47     void pt_image_destroy (pt_image *image) nogil

    48     

    49     # error code -> name

    50     char* pt_strerror (int err)