add new comparison method rgb_difference that resembles arithmetical difference per...
[imager.git] / imext.c
diff --git a/imext.c b/imext.c
index d0544e6..b1ce618 100644 (file)
--- a/imext.c
+++ b/imext.c
@@ -1,6 +1,29 @@
 #include "imexttypes.h"
 #include "imager.h"
 #include "imio.h"
+#include "imexif.h"
+
+static im_context_t get_context(void);
+static i_img *mathom_i_img_8_new(i_img_dim, i_img_dim, int);
+static i_img *mathom_i_img_16_new(i_img_dim, i_img_dim, int);
+static i_img *mathom_i_img_double_new(i_img_dim, i_img_dim, int);
+static i_img *mathom_i_img_pal_new(i_img_dim, i_img_dim, int, int);
+static void mathom_i_clear_error(void);
+static void mathom_i_push_error(int, const char *);
+static void mathom_i_push_errorvf(int, const char *, va_list);
+static int mathom_i_set_image_file_limits(i_img_dim, i_img_dim, size_t);
+static int mathom_i_get_image_file_limits(i_img_dim*, i_img_dim*, size_t*);
+static int
+mathom_i_int_check_image_file_limits(i_img_dim, i_img_dim, int, size_t);
+static i_img *mathom_i_img_alloc(void);
+static void mathom_i_img_init(i_img *);
+static i_io_glue_t *mathom_io_new_fd(int);
+static i_io_glue_t *mathom_io_new_bufchain(void);
+static i_io_glue_t *
+mathom_io_new_buffer(const char *data, size_t, i_io_closebufp_t, void *);
+static i_io_glue_t *
+mathom_io_new_cb(void *, i_io_readl_t, i_io_writel_t, i_io_seekl_t,
+                i_io_closel_t, i_io_destroyl_t);
 
 /*
  DON'T ADD CASTS TO THESE
@@ -18,10 +41,10 @@ im_ext_funcs imager_function_table =
     myfree_file_line,
     myrealloc_file_line,
 
-    i_img_8_new,
-    i_img_16_new,
-    i_img_double_new,
-    i_img_pal_new,
+    mathom_i_img_8_new,
+    mathom_i_img_16_new,
+    mathom_i_img_double_new,
+    mathom_i_img_pal_new,
     i_img_destroy,
     i_sametype,
     i_sametype_chans,
@@ -58,10 +81,10 @@ im_ext_funcs imager_function_table =
     i_quant_translate,
     i_quant_transparent,
 
-    i_clear_error,
-    i_push_error,
+    mathom_i_clear_error,
+    mathom_i_push_error,
     i_push_errorf,
-    i_push_errorvf,
+    mathom_i_push_errorvf,
 
     i_tags_new,
     i_tags_set,
@@ -99,9 +122,9 @@ im_ext_funcs imager_function_table =
     i_rubthru,
 
     /* IMAGER_API_LEVEL 2 functions */
-    i_set_image_file_limits,
-    i_get_image_file_limits,
-    i_int_check_image_file_limits,
+    mathom_i_set_image_file_limits,
+    mathom_i_get_image_file_limits,
+    mathom_i_int_check_image_file_limits,
 
     i_flood_fill_border,
     i_flood_cfill_border,
@@ -116,8 +139,8 @@ im_ext_funcs imager_function_table =
     i_loog,
 
     /* IMAGER_API_LEVEL 4 functions */
-    i_img_alloc,
-    i_img_init,
+    mathom_i_img_alloc,
+    mathom_i_img_init,
 
     /* IMAGER_API_LEVEL 5 functions */
     i_img_is_monochrome,
@@ -131,7 +154,73 @@ im_ext_funcs imager_function_table =
     i_render_color,
     i_render_fill,
     i_render_line,
-    i_render_linef
+    i_render_linef,
+
+    /* level 6 */
+    i_io_getc_imp,
+    i_io_peekc_imp,
+    i_io_peekn,
+    i_io_putc_imp,
+    i_io_read,
+    i_io_write,
+    i_io_seek,
+    i_io_flush,
+    i_io_close,
+    i_io_set_buffered,
+    i_io_gets,
+    mathom_io_new_fd,
+    mathom_io_new_bufchain,
+    mathom_io_new_buffer,
+    mathom_io_new_cb,
+    io_slurp,
+    io_glue_destroy,
+
+    /* level 8 */
+    im_img_8_new,
+    im_img_16_new,
+    im_img_double_new,
+    im_img_pal_new,
+    im_clear_error,
+    im_push_error,
+    im_push_errorvf,
+    im_push_errorf,
+    im_set_image_file_limits,
+    im_get_image_file_limits,
+    im_int_check_image_file_limits,
+    im_img_alloc,
+    im_img_init,
+    im_io_new_fd,
+    im_io_new_bufchain,
+    im_io_new_buffer,
+    im_io_new_cb,
+    get_context,
+    im_lhead,
+    im_loog,
+    im_context_refinc,
+    im_context_refdec,
+    im_errors,
+    i_mutex_new,
+    i_mutex_destroy,
+    i_mutex_lock,
+    i_mutex_unlock,
+    im_context_slot_new,
+    im_context_slot_set,
+    im_context_slot_get,
+
+    /* level 9 */
+    i_poly_poly_aa,
+    i_poly_poly_aa_cfill,
+    i_poly_aa_m,
+    i_poly_aa_cfill_m,
+
+    i_img_alpha_channel,
+    i_img_color_model,
+    i_img_color_channels,
+
+    /* level 10 */
+    im_decode_exif
+
+    /* level 11 */
   };
 
 /* in general these functions aren't called by Imager internally, but
@@ -333,6 +422,42 @@ i_img_dim
   return i_gsampf(im, l, r, y, samp, chans, chan_count);
 }
 
+/*
+=item i_gsamp_bits(im, left, right, y, samples, channels, channel_count, bits)
+=category Drawing
+
+Reads integer samples scaled to C<bits> bits of precision into the
+C<unsigned int> array C<samples>.
+
+Expect this to be slow unless C<< bits == im->bits >>.
+
+Returns the number of samples copied, or -1 on error.
+
+Not all image types implement this method.
+
+Pushes errors, but does not call C<i_clear_error()>.
+
+=cut
+*/
+
+/*
+=item i_psamp_bits(im, left, right, y, samples, channels, channel_count, bits)
+=category Drawing
+
+Writes integer samples scaled to C<bits> bits of precision from the
+C<unsigned int> array C<samples>.
+
+Expect this to be slow unless C<< bits == im->bits >>.
+
+Returns the number of samples copied, or -1 on error.
+
+Not all image types implement this method.
+
+Pushes errors, but does not call C<i_clear_error()>.
+
+=cut
+*/
+
 /*
 =item i_gpal(im, left, right, y, indexes)
 
@@ -495,3 +620,106 @@ int
   return i_setcolors(im, index, colors, count);
 }
 
+/*
+=item im_get_context()
+
+Retrieve the context object for the current thread.
+
+Inside Imager itself this is just a function pointer, which the
+F<Imager.xs> BOOT handler initializes for use within perl.  If you're
+taking the Imager code and embedding it elsewhere you need to
+initialize the C<im_get_context> pointer at some point.
+
+=cut
+*/
+
+static im_context_t
+get_context(void) {
+  return im_get_context();
+}
+
+static i_img *
+mathom_i_img_8_new(i_img_dim xsize, i_img_dim ysize, int channels) {
+  return i_img_8_new(xsize, ysize, channels);
+}
+
+static i_img *
+mathom_i_img_16_new(i_img_dim xsize, i_img_dim ysize, int channels) {
+  return i_img_16_new(xsize, ysize, channels);
+}
+
+static i_img *
+mathom_i_img_double_new(i_img_dim xsize, i_img_dim ysize, int channels) {
+  return i_img_double_new(xsize, ysize, channels);
+}
+
+static i_img *
+mathom_i_img_pal_new(i_img_dim xsize, i_img_dim ysize, int channels,
+                    int maxpal) {
+  return i_img_pal_new(xsize, ysize, channels, maxpal);
+}
+
+static void
+mathom_i_clear_error(void) {
+  i_clear_error();
+}
+
+static void
+mathom_i_push_error(int code, const char *msg) {
+  i_push_error(code, msg);
+}
+
+static void
+mathom_i_push_errorvf(int code, const char *fmt, va_list args) {
+  i_push_errorvf(code, fmt, args);
+}
+
+static int
+mathom_i_set_image_file_limits(i_img_dim max_width, i_img_dim max_height,
+                              size_t max_bytes) {
+  return i_set_image_file_limits(max_width, max_height, max_bytes);
+}
+
+static int
+mathom_i_get_image_file_limits(i_img_dim *pmax_width, i_img_dim *pmax_height,
+                              size_t *pmax_bytes) {
+  return i_get_image_file_limits(pmax_width, pmax_height, pmax_bytes);
+}
+
+static int
+mathom_i_int_check_image_file_limits(i_img_dim width, i_img_dim height,
+                                    int channels, size_t sample_size) {
+  return i_int_check_image_file_limits(width, height, channels, sample_size);
+}
+
+static i_img *
+mathom_i_img_alloc(void) {
+  return i_img_alloc();
+}
+
+static void
+mathom_i_img_init(i_img *im) {
+  i_img_init(im);
+}
+
+static i_io_glue_t *
+mathom_io_new_fd(int fd) {
+  return io_new_fd(fd);
+}
+static i_io_glue_t *
+mathom_io_new_bufchain(void) {
+  return io_new_bufchain();
+}
+
+static i_io_glue_t *
+mathom_io_new_buffer(const char *data, size_t size, i_io_closebufp_t closefp,
+                    void *close_data) {
+  return io_new_buffer(data, size, closefp, close_data);
+}
+
+static i_io_glue_t *
+mathom_io_new_cb(void *p, i_io_readl_t readcb, i_io_writel_t writecb,
+                i_io_seekl_t seekcb, i_io_closel_t closecb,
+                i_io_destroyl_t destroycb) {
+  return io_new_cb(p, readcb, writecb, seekcb, closecb, destroycb);
+}