iolayer.h
iolayert.h IO layer types
jpeg.c
-lib/Imager/API.pm
-lib/Imager/APIRef.pm API function reference
+lib/Imager/API.pod
+lib/Imager/APIRef.pod API function reference
lib/Imager/Color.pm
lib/Imager/Color/Float.pm
lib/Imager/Color/Table.pm
$(ECHO) "==> Your Makefile has been rebuilt - re-run your make command <=="
'.qq!
lib/Imager/APIRef.pm : \$(C_FILES) apidocs.perl
- $perl apidocs.perl lib/Imager/APIRef.pm
+ $perl apidocs.perl lib/Imager/APIRef.pod
!;
+++ /dev/null
-=head1 NAME
-
-Imager::API - Imager's C API - introduction.
-
-=head1 SYNOPSIS
-
- #include "imext.h"
- #include "imperl.h"
-
- DEFINE_IMAGER_CALLBACKS;
-
- MODULE = Your::Module PACKAGE = Your::Module
-
- ...
-
- BOOT:
- PERL_INITIALIZE_IMAGER_CALLBACKS;
-
-
-=head1 DESCRIPTION
-
-The API allows you to access Imager functions at the C level from XS
-and from Inline::C.
-
-The intent is to allow users to:
-
-=over
-
-=item *
-
-write C code that does Imager operations the user might do from Perl,
-but faster, for example, the Imager::CountColor example.
-
-=item *
-
-write C code that implements an application specific version of some
-core Imager object, for example, Imager::SDL.
-
-=item *
-
-write C code that hooks into Imagers existing methods, such as filter
-or file format handlers.
-
-=back
-
-See L<Imager::Inline> for information on using Imager's Inline::C
-support.
-
-=head1 Beware
-
-=over
-
-=item *
-
-don't return an object you received as a parameter - this will cause
-the object to be freed twice.
-
-=back
-
-=head1 Types
-
-The API makes the following types visible:
-
-=over
-
-=item *
-
-i_img - used to represent an image
-
-=item *
-
-i_color - used to represent a color with up to 8 bits per sample.
-
-=item *
-
-i_fcolor - used to represent a color with a double per sample.
-
-=item *
-
-i_fill_t - an abstract fill
-
-=back
-
-At this point there is no consolidated font object type, and hence the
-font functions are not visible through Imager's API.
-
-=head2 i_img - images
-
-This contains the dimensions of the image (xsize, ysize, channels),
-image metadata (ch_mask, bits, type, virtual), potentially image data
-(idata) and the a function table, with pointers to functions to
-perform various low level image operations.
-
-The only time you should directly write to any value in this type is
-if you're implementing your own image type.
-
-The typemap includes typenames Imager and Imager::ImgRaw as typedefs
-for C<i_img *>.
-
-For incoming parameters the typemap will accept either Imager or
-Imager::ImgRaw objects.
-
-For return values the typemap will produce a full Imager object for an
-Imager return type and a raw image object for an Imager::ImgRaw return
-type.
-
-=head2 i_color - 8-bit color
-
-Represents an 8-bit per sample color. This is a union containing
-several different structs for access to components of a color:
-
-=over
-
-=item *
-
-gray - single member gray_color.
-
-=item *
-
-rgb - r, g, b members.
-
-=item *
-
-rgba - r, g, b, a members.
-
-=item *
-
-channels - array of channels.
-
-=back
-
-Use Imager::Color for parameter and return value types.
-
-=head2 i_fcolor - floating point color
-
-Similar to i_color except that each component is a double instead of
-an unsigned char.
-
-Use Imager::Color::Float for parameter and return value types.
-
-=head2 i_fill_t - fill objects
-
-Abstract type containing pointers called to perform low level fill
-operations.
-
-Unless you're defining your own fill objects you should treat this as
-an opaque type.
-
-Use Imager::FillHandle for parameter and return value types. At the
-Perl level this is stored in the C<fill> member of the Perl level
-Imager::Fill object.
-
-=head1 Create an XS module using the Imager API
-
-=head2 Foo.xs
-
-You'll need the following in your XS source:
-
-=over
-
-=item *
-
-include the Imager external API header, and the perl interface header:
-
- #include "imext.h"
- #include "imperl.h"
-
-=item *
-
-create the variables used to hold the callback table:
-
- DEFINE_IMAGER_CALLBACKS;
-
-=item *
-
-initialize the callback table in your BOOT code:
-
- BOOT:
- PERL_INITIALIZE_IMAGER_CALLBACKS;
-
-=back
-
-=head2 foo.c
-
-In any other source files where you want to access the Imager API,
-you'll need to:
-
-=over
-
-=item *
-
-include the Imager external API header:
-
- #include "imext.h"
-
-=back
-
-=head2 Makefile.PL
-
-If you're creating an XS module that depends on Imager's API your
-Makefile.PL will need to do the following:
-
-=over
-
-=item *
-
-C<use Imager::ExtUtils;>
-
-=item *
-
-include Imager's include directory in INC:
-
- INC => Imager::ExtUtils->includes
-
-=item *
-
-use Imager's typemap:
-
- TYPEMAPS => [ Imager::ExtUtils->typemap ]
-
-=item *
-
-include Imager 0.48 as a PREREQ_PM:
-
- PREREQ_PM =>
- {
- Imager => 0.48,
- },
-
-=back
-
-=head1 AUTHOR
-
-Tony Cook <tony@imager.perl.org>
-
-=head1 SEE ALSO
-
-Imager, Imager::ExtUtils, Imager::APIRef, Imager::Inline
-
-=cut
--- /dev/null
+=head1 NAME
+
+Imager::API - Imager's C API - introduction.
+
+=head1 SYNOPSIS
+
+ #include "imext.h"
+ #include "imperl.h"
+
+ DEFINE_IMAGER_CALLBACKS;
+
+ MODULE = Your::Module PACKAGE = Your::Module
+
+ ...
+
+ BOOT:
+ PERL_INITIALIZE_IMAGER_CALLBACKS;
+
+
+=head1 DESCRIPTION
+
+The API allows you to access Imager functions at the C level from XS
+and from Inline::C.
+
+The intent is to allow users to:
+
+=over
+
+=item *
+
+write C code that does Imager operations the user might do from Perl,
+but faster, for example, the Imager::CountColor example.
+
+=item *
+
+write C code that implements an application specific version of some
+core Imager object, for example, Imager::SDL.
+
+=item *
+
+write C code that hooks into Imagers existing methods, such as filter
+or file format handlers.
+
+=back
+
+See L<Imager::Inline> for information on using Imager's Inline::C
+support.
+
+=head1 Beware
+
+=over
+
+=item *
+
+don't return an object you received as a parameter - this will cause
+the object to be freed twice.
+
+=back
+
+=head1 Types
+
+The API makes the following types visible:
+
+=over
+
+=item *
+
+i_img - used to represent an image
+
+=item *
+
+i_color - used to represent a color with up to 8 bits per sample.
+
+=item *
+
+i_fcolor - used to represent a color with a double per sample.
+
+=item *
+
+i_fill_t - an abstract fill
+
+=back
+
+At this point there is no consolidated font object type, and hence the
+font functions are not visible through Imager's API.
+
+=head2 i_img - images
+
+This contains the dimensions of the image (xsize, ysize, channels),
+image metadata (ch_mask, bits, type, virtual), potentially image data
+(idata) and the a function table, with pointers to functions to
+perform various low level image operations.
+
+The only time you should directly write to any value in this type is
+if you're implementing your own image type.
+
+The typemap includes typenames Imager and Imager::ImgRaw as typedefs
+for C<i_img *>.
+
+For incoming parameters the typemap will accept either Imager or
+Imager::ImgRaw objects.
+
+For return values the typemap will produce a full Imager object for an
+Imager return type and a raw image object for an Imager::ImgRaw return
+type.
+
+=head2 i_color - 8-bit color
+
+Represents an 8-bit per sample color. This is a union containing
+several different structs for access to components of a color:
+
+=over
+
+=item *
+
+gray - single member gray_color.
+
+=item *
+
+rgb - r, g, b members.
+
+=item *
+
+rgba - r, g, b, a members.
+
+=item *
+
+channels - array of channels.
+
+=back
+
+Use Imager::Color for parameter and return value types.
+
+=head2 i_fcolor - floating point color
+
+Similar to i_color except that each component is a double instead of
+an unsigned char.
+
+Use Imager::Color::Float for parameter and return value types.
+
+=head2 i_fill_t - fill objects
+
+Abstract type containing pointers called to perform low level fill
+operations.
+
+Unless you're defining your own fill objects you should treat this as
+an opaque type.
+
+Use Imager::FillHandle for parameter and return value types. At the
+Perl level this is stored in the C<fill> member of the Perl level
+Imager::Fill object.
+
+=head1 Create an XS module using the Imager API
+
+=head2 Foo.xs
+
+You'll need the following in your XS source:
+
+=over
+
+=item *
+
+include the Imager external API header, and the perl interface header:
+
+ #include "imext.h"
+ #include "imperl.h"
+
+=item *
+
+create the variables used to hold the callback table:
+
+ DEFINE_IMAGER_CALLBACKS;
+
+=item *
+
+initialize the callback table in your BOOT code:
+
+ BOOT:
+ PERL_INITIALIZE_IMAGER_CALLBACKS;
+
+=back
+
+=head2 foo.c
+
+In any other source files where you want to access the Imager API,
+you'll need to:
+
+=over
+
+=item *
+
+include the Imager external API header:
+
+ #include "imext.h"
+
+=back
+
+=head2 Makefile.PL
+
+If you're creating an XS module that depends on Imager's API your
+Makefile.PL will need to do the following:
+
+=over
+
+=item *
+
+C<use Imager::ExtUtils;>
+
+=item *
+
+include Imager's include directory in INC:
+
+ INC => Imager::ExtUtils->includes
+
+=item *
+
+use Imager's typemap:
+
+ TYPEMAPS => [ Imager::ExtUtils->typemap ]
+
+=item *
+
+include Imager 0.48 as a PREREQ_PM:
+
+ PREREQ_PM =>
+ {
+ Imager => 0.48,
+ },
+
+=back
+
+=head1 AUTHOR
+
+Tony Cook <tony@imager.perl.org>
+
+=head1 SEE ALSO
+
+Imager, Imager::ExtUtils, Imager::APIRef, Imager::Inline
+
+=cut
+++ /dev/null
-Do not edit this file, it is generated automatically by apidocs.perl
-from Imager's source files.
-
-Each function description has a comment listing the source file and
-line number where you can find the documentation.
-
-=head1 NAME
-
-Imager::APIRef - Imager's C API.
-
-=head1 SYNOPSIS
-
- i_color color;
- color.rgba.red = 255; color.rgba.green = 0; color.rgba.blue = 255;
- i_fill_t *fill = i_new_fill_...(...);
-
-
- # Drawing
- i_arc(im, 50, 50, 20, 45, 135, &color);
- i_arc_aa(im, 50, 50, 35, 90, 135, &color);
- i_arc_aa_cfill(im, 50, 50, 35, 90, 135, fill);
- i_arc_cfill(im, 50, 50, 35, 90, 135, fill);
- i_box(im, 0, 0, im->xsize-1, im->ysize-1, &color).
- i_box_cfill(im, 0, 0, im->xsize-1, im->ysize-1, fill);
- i_box_filled(im, 0, 0, im->xsize-1, im->ysize-1, &color);
- i_circle_aa(im, 50, 50, 45, &color);
- i_flood_cfill(im, 50, 50, fill);
- i_flood_fill(im, 50, 50, &color);
-
- # Error handling
-
- # Fills
- fill = i_new_fill_fount(0, 0, 100, 100, i_ft_linear, i_ft_linear,
- i_fr_triangle, 0, i_fts_grid, 9, 1, segs);
-
- # Image
-
- # Image creation
-
- # Image quantization
-
- # Paletted images
-
- # Tags
-
- i_fill_destroy(fill);
-
-=head1 DESCRIPTION
-
-=head2 Drawing
-
-=over
-
-=item i_arc(im, x, y, rad, d1, d2, color)
-
-
-Fills an arc centered at (x,y) with radius I<rad> covering the range
-of angles in degrees from d1 to d2, with the color.
-
-
-=for comment
-From: Line 205 in draw.c
-
-=item i_arc_aa(im, x, y, rad, d1, d2, color)
-
-
-Antialias fills an arc centered at (x,y) with radius I<rad> covering
-the range of angles in degrees from d1 to d2, with the color.
-
-
-=for comment
-From: Line 330 in draw.c
-
-=item i_arc_aa_cfill(im, x, y, rad, d1, d2, fill)
-
-
-Antialias fills an arc centered at (x,y) with radius I<rad> covering
-the range of angles in degrees from d1 to d2, with the fill object.
-
-
-=for comment
-From: Line 356 in draw.c
-
-=item i_arc_cfill(im, x, y, rad, d1, d2, fill)
-
-
-Fills an arc centered at (x,y) with radius I<rad> covering the range
-of angles in degrees from d1 to d2, with the fill object.
-
-
-=for comment
-From: Line 230 in draw.c
-
-=item i_box(im, x1, y1, x2, y2, color)
-
-
-Outlines the box from (x1,y1) to (x2,y2) inclusive with I<color>.
-
-
-=for comment
-From: Line 516 in draw.c
-
-=item i_box_cfill(im, x1, y1, x2, y2, fill)
-
-
-Fills the box from (x1,y1) to (x2,y2) inclusive with fill.
-
-
-=for comment
-From: Line 559 in draw.c
-
-=item i_box_filled(im, x1, y1, x2, y2, color)
-
-
-Fills the box from (x1,y1) to (x2,y2) inclusive with color.
-
-
-=for comment
-From: Line 541 in draw.c
-
-=item i_circle_aa(im, x, y, rad, color)
-
-
-Antialias fills a circle centered at (x,y) for radius I<rad> with
-color.
-
-
-=for comment
-From: Line 462 in draw.c
-
-=item i_flood_cfill(im, seedx, seedy, fill)
-
-
-Flood fills the 4-connected region starting from the point (seedx,
-seedy) with I<fill>.
-
-Returns false if (seedx, seedy) are outside the image.
-
-
-=for comment
-From: Line 1317 in draw.c
-
-=item i_flood_fill(im, seedx, seedy, color)
-
-
-Flood fills the 4-connected region starting from the point (seedx,
-seedy) with I<color>.
-
-Returns false if (seedx, seedy) are outside the image.
-
-
-=for comment
-From: Line 1280 in draw.c
-
-=item i_glin(im, l, r, y, colors)
-
-
-Retrieves (r-l) pixels starting from (l,y) into I<colors>.
-
-Returns the number of pixels retrieved.
-
-
-=for comment
-From: Line 202 in imext.c
-
-=item i_glinf(im, l, r, y, colors)
-
-
-Retrieves (r-l) pixels starting from (l,y) into I<colors> as floating
-point colors.
-
-Returns the number of pixels retrieved.
-
-
-=for comment
-From: Line 237 in imext.c
-
-=item i_gpal(im, x, r, y, indexes)
-
-
-Reads palette indexes for the horizontal line (x, y) to (r-1, y) into
-indexes.
-
-Returns the number of indexes read.
-
-Always returns 0 for direct color images.
-
-
-=for comment
-From: Line 301 in imext.c
-
-=item i_gpix(im, x, y, color)
-
-
-Retrieves the I<color> of the pixel (x,y).
-
-Returns 0 if the pixel was retrieved, or -1 if not.
-
-
-=for comment
-From: Line 130 in imext.c
-
-=item i_gpixf(im, x, y, fcolor)
-
-
-Retrieves the color of the pixel (x,y) as a floating point color into
-I<fcolor>.
-
-Returns 0 if the pixel was retrieved, or -1 if not.
-
-
-=for comment
-From: Line 166 in imext.c
-
-=item i_gsamp(im, l, r, y, samp, chans, chan_count)
-
-
-Reads sample values from im for the horizontal line (l, y) to (r-1,y)
-for the channels specified by chans, an array of int with chan_count
-elements.
-
-If chans is NULL then the first chan_count channels are retrieved for
-each pixel.
-
-Returns the number of samples read (which should be (r-l) *
-chan_count)
-
-
-=for comment
-From: Line 255 in imext.c
-
-=item i_gsampf(im, l, r, y, samp, chans, chan_count)
-
-
-Reads floating point sample values from im for the horizontal line (l,
-y) to (r-1,y) for the channels specified by chans, an array of int
-with chan_count elements.
-
-If chans is NULL then the first chan_count channels are retrieved for
-each pixel.
-
-Returns the number of samples read (which should be (r-l) *
-chan_count)
-
-
-=for comment
-From: Line 278 in imext.c
-
-=item i_line(im, x1, y1, x2, y2, val, endp)
-
-
-Draw a line to image using bresenhams linedrawing algorithm
-
- im - image to draw to
- x1 - starting x coordinate
- y1 - starting x coordinate
- x2 - starting x coordinate
- y2 - starting x coordinate
- val - color to write to image
- endp - endpoint flag (boolean)
-
-
-=for comment
-From: Line 630 in draw.c
-
-=item i_line_aa(im, x1, x2, y1, y2, color, endp)
-
-
-Antialias draws a line from (x1,y1) to (x2, y2) in color.
-
-The point (x2, y2) is drawn only if endp is set.
-
-
-=for comment
-From: Line 834 in draw.c
-
-=item i_plin(im, l, r, y, colors)
-
-
-Sets (r-l) pixels starting from (l,y) using (r-l) values from
-I<colors>.
-
-Returns the number of pixels set.
-
-
-=for comment
-From: Line 184 in imext.c
-
-=item i_plinf(im, l, r, fcolors)
-
-
-Sets (r-l) pixels starting from (l,y) using (r-l) floating point
-colors from I<colors>.
-
-Returns the number of pixels set.
-
-
-=for comment
-From: Line 219 in imext.c
-
-=item i_ppal(im, x, r, y, indexes)
-
-
-Writes palette indexes for the horizontal line (x, y) to (r-1, y) from
-indexes.
-
-Returns the number of indexes written.
-
-Always returns 0 for direct color images.
-
-
-=for comment
-From: Line 320 in imext.c
-
-=item i_ppix(im, x, y, color)
-
-
-Sets the pixel at (x,y) to I<color>.
-
-Returns 0 if the pixel was drawn, or -1 if not.
-
-Does no alpha blending, just copies the channels from the supplied
-color to the image.
-
-
-=for comment
-From: Line 110 in imext.c
-
-=item i_ppixf(im, x, y, fcolor)
-
-
-Sets the pixel at (x,y) to the floating point color I<fcolor>.
-
-Returns 0 if the pixel was drawn, or -1 if not.
-
-Does no alpha blending, just copies the channels from the supplied
-color to the image.
-
-
-=for comment
-From: Line 147 in imext.c
-
-
-=back
-
-=head2 Error handling
-
-=over
-
-=item i_clear_error()
-
-
-Clears the error stack.
-
-Called by any imager function before doing any other processing.
-
-
-=for comment
-From: Line 185 in error.c
-
-=item i_push_error(int code, char const *msg)
-
-
-Called by an imager function to push an error message onto the stack.
-
-No message is pushed if the stack is full (since this means someone
-forgot to call i_clear_error(), or that a function that doesn't do
-error handling is calling function that does.).
-
-
-=for comment
-From: Line 211 in error.c
-
-=item i_push_errorf(int code, char const *fmt, ...)
-
-
-A version of i_push_error() that does printf() like formating.
-
-
-=for comment
-From: Line 273 in error.c
-
-=item i_push_errorvf(int code, char const *fmt, va_list ap)
-
-
-Intended for use by higher level functions, takes a varargs pointer
-and a format to produce the finally pushed error message.
-
-
-=for comment
-From: Line 249 in error.c
-
-
-=back
-
-=head2 Fills
-
-=over
-
-=item i_fill_destroy(fill)
-
-
-Call to destroy any fill object.
-
-
-=for comment
-From: Line 196 in fills.c
-
-=item i_new_fill_fount(xa, ya, xb, yb, type, repeat, combine, super_sample, ssample_param, count, segs)
-
-
-
-Creates a new general fill which fills with a fountain fill.
-
-
-=for comment
-From: Line 1713 in filters.c
-
-=item i_new_fill_hatch(fg, bg, combine, hatch, cust_hatch, dx, dy)
-
-
-Creates a new hatched fill with the fg color used for the 1 bits in
-the hatch and bg for the 0 bits. If combine is non-zero alpha values
-will be combined.
-
-If cust_hatch is non-NULL it should be a pointer to 8 bytes of the
-hash definition, with the high-bits to the left.
-
-If cust_hatch is NULL then one of the standard hatches is used.
-
-(dx, dy) are an offset into the hatch which can be used to unalign adjoining areas, or to align the origin of a hatch with the the side of a filled area.
-
-
-=for comment
-From: Line 427 in fills.c
-
-=item i_new_fill_hatchf(fg, bg, combine, hatch, cust_hatch, dx, dy)
-
-
-Creates a new hatched fill with the fg color used for the 1 bits in
-the hatch and bg for the 0 bits. If combine is non-zero alpha values
-will be combined.
-
-If cust_hatch is non-NULL it should be a pointer to 8 bytes of the
-hash definition, with the high-bits to the left.
-
-If cust_hatch is NULL then one of the standard hatches is used.
-
-(dx, dy) are an offset into the hatch which can be used to unalign adjoining areas, or to align the origin of a hatch with the the side of a filled area.
-
-
-=for comment
-From: Line 452 in fills.c
-
-=item i_new_fill_image(im, matrix, xoff, yoff, combine)
-
-
-Create an image based fill.
-
-matrix is an array of 9 doubles representing a transformation matrix.
-
-xoff and yoff are the offset into the image to start filling from.
-
-
-=for comment
-From: Line 489 in fills.c
-
-=item i_new_fill_solid(color, combine)
-
-
-Create a solid fill based on an 8-bit color.
-
-If combine is non-zero then alpha values will be combined.
-
-
-=for comment
-From: Line 244 in fills.c
-
-=item i_new_fill_solidf(color, combine)
-
-
-Create a solid fill based on a float color.
-
-If combine is non-zero then alpha values will be combined.
-
-
-=for comment
-From: Line 213 in fills.c
-
-
-=back
-
-=head2 Image
-
-=over
-
-=item i_copy(src)
-
-
-Creates a new image that is a copy of src.
-
-Tags are not copied, only the image data.
-
-Returns: i_img *
-
-
-=for comment
-From: Line 626 in image.c
-
-=item i_copyto(dest, src, x1, y1, x2, y2, tx, ty)
-
-
-Copies image data from the area (x1,y1)-[x2,y2] in the source image to
-a rectangle the same size with it's top-left corner at (tx,ty) in the
-destination image.
-
-If x1 > x2 or y1 > y2 then the corresponding co-ordinates are swapped.
-
-
-=for comment
-From: Line 557 in image.c
-
-=item i_copyto_trans(im, src, x1, y1, x2, y2, tx, ty, trans)
-
-
-(x1,y1) (x2,y2) specifies the region to copy (in the source coordinates)
-(tx,ty) specifies the upper left corner for the target image.
-pass NULL in trans for non transparent i_colors.
-
-
-=for comment
-From: Line 515 in image.c
-
-=item i_img_destroy(im)
-
-
-Destroy image and free data via exorcise.
-
- im - Image pointer
-
-
-=for comment
-From: Line 424 in image.c
-
-=item i_img_info(im, info)
-
-
-Return image information
-
- im - Image pointer
- info - pointer to array to return data
-
-info is an array of 4 integers with the following values:
-
- info[0] - width
- info[1] - height
- info[2] - channels
- info[3] - channel mask
-
-
-=for comment
-From: Line 443 in image.c
-
-=item i_rubthru(im, src, tx, ty, src_minx, src_miny, src_maxx, src_maxy )
-
-
-Takes the sub image I<src[src_minx, src_maxx)[src_miny, src_maxy)> and
-overlays it at (I<tx>,I<ty>) on the image object.
-
-The alpha channel of each pixel in I<src> is used to control how much
-the existing colour in I<im> is replaced, if it is 255 then the colour
-is completely replaced, if it is 0 then the original colour is left
-unmodified.
-
-
-=for comment
-From: Line 701 in image.c
-
-
-=back
-
-=head2 Image creation
-
-=over
-
-=item i_img_16_new(x, y, ch)
-
-
-Create a new 16-bit/sample image.
-
-Returns the image on success, or NULL on failure.
-
-
-=for comment
-From: Line 192 in img16.c
-
-=item i_img_8_new(x, y, ch)
-
-
-Creates a new image object I<x> pixels wide, and I<y> pixels high with
-I<ch> channels.
-
-
-=for comment
-From: Line 257 in image.c
-
-=item i_img_double_new(int x, int y, int ch)
-
-
-Creates a new double per sample image.
-
-
-=for comment
-From: Line 82 in imgdouble.c
-
-=item i_img_pal_new(x, y, channels, maxpal)
-
-
-Creates a new paletted image of the supplied dimensions.
-
-Returns a new image or NULL on failure.
-
-
-=for comment
-From: Line 136 in palimg.c
-
-=item i_sametype(i_img *im, int xsize, int ysize)
-
-
-Returns an image of the same type (sample size, channels, paletted/direct).
-
-For paletted images the palette is copied from the source.
-
-
-=for comment
-From: Line 1107 in image.c
-
-=item i_sametype_chans(i_img *im, int xsize, int ysize, int channels)
-
-
-Returns an image of the same type (sample size).
-
-For paletted images the equivalent direct type is returned.
-
-
-=for comment
-From: Line 1149 in image.c
-
-
-=back
-
-=head2 Image quantization
-
-=over
-
-=item i_quant_makemap(quant, imgs, count)
-
-
-Analyzes the I<count> images in I<imgs> according to the rules in
-I<quant> to build a color map (optimal or not depending on
-quant->make_colors).
-
-
-=for comment
-From: Line 30 in quant.c
-
-=item i_quant_translate(quant, img)
-
-
-Quantize the image given the palette in quant.
-
-On success returns a pointer to a memory block of img->xsize *
-img->ysize i_palidx entries.
-
-On failure returns NULL.
-
-You should call myfree() on the returned block when you're done with
-it.
-
-This function will fail if the supplied palette contains no colors.
-
-
-=for comment
-From: Line 86 in quant.c
-
-=item i_quant_transparent(quant, data, img, trans_index)
-
-
-Dither the alpha channel on I<img> into the palette indexes in
-I<data>. Pixels to be transparent are replaced with I<trans_pixel>.
-
-The method used depends on the tr_* members of quant.
-
-
-=for comment
-From: Line 1470 in quant.c
-
-
-=back
-
-=head2 Paletted images
-
-=over
-
-=item i_addcolors(im, colors, count)
-
-
-Adds colors to the image's palette.
-
-On success returns the index of the lowest color added.
-
-On failure returns -1.
-
-Always fails for direct color images.
-
-
-=for comment
-From: Line 339 in imext.c
-
-=item i_colorcount(im)
-
-
-Returns the number of colors in the image's palette.
-
-Returns -1 for direct images.
-
-
-=for comment
-From: Line 385 in imext.c
-
-=item i_findcolor(im, color, &entry)
-
-
-Searches the images palette for the given color.
-
-On success sets *I<entry> to the index of the color, and returns true.
-
-On failure returns false.
-
-Always fails on direct color images.
-
-
-=for comment
-From: Line 420 in imext.c
-
-=item i_getcolors(im, index, colors, count)
-
-
-Retrieves I<count> colors starting from I<index> in the image's
-palette.
-
-On success stores the colors into I<colors> and returns true.
-
-On failure returns false.
-
-Always fails for direct color images.
-
-Fails if there are less than I<index>+I<count> colors in the image's
-palette.
-
-
-=for comment
-From: Line 360 in imext.c
-
-=item i_maxcolors(im)
-
-
-Returns the maximum number of colors the palette can hold for the
-image.
-
-Returns -1 for direct color images.
-
-
-=for comment
-From: Line 402 in imext.c
-
-=item i_setcolors(im, index, colors, count)
-
-
-Sets I<count> colors starting from I<index> in the image's palette.
-
-On sucess returns true.
-
-On failure returns false.
-
-The image must have at least I<index>+I<count> colors in it's palette
-for this to succeed.
-
-Always fails on direct color images.
-
-
-=for comment
-From: Line 440 in imext.c
-
-
-=back
-
-=head2 Tags
-
-=over
-
-=item i_tags_delbycode(tags, code)
-
-
-Delete any tags with the given code.
-
-Returns the number of tags deleted.
-
-
-=for comment
-From: Line 294 in tags.c
-
-=item i_tags_delbyname(tags, name)
-
-
-Delete any tags with the given name.
-
-Returns the number of tags deleted.
-
-
-=for comment
-From: Line 264 in tags.c
-
-=item i_tags_delete(tags, index)
-
-
-Delete a tag by index.
-
-Returns true on success.
-
-
-=for comment
-From: Line 235 in tags.c
-
-=item i_tags_destroy(tags)
-
-
-Destroys the given tags structure. Called by i_img_destroy().
-
-
-=for comment
-From: Line 158 in tags.c
-
-=item i_tags_find(tags, name, start, &entry)
-
-
-Searchs for a tag of the given I<name> starting from index I<start>.
-
-On success returns true and sets *I<entry>.
-
-On failure returns false.
-
-
-=for comment
-From: Line 181 in tags.c
-
-=item i_tags_findn(tags, code, start, &entry)
-
-
-Searchs for a tag of the given I<code> starting from index I<start>.
-
-On success returns true and sets *I<entry>.
-
-On failure returns false.
-
-
-=for comment
-From: Line 208 in tags.c
-
-=item i_tags_get_color(tags, name, code, &value)
-
-
-Retrieve a tag specified by name or code as color.
-
-On success sets the i_color *I<value> to the color and returns true.
-
-On failure returns false.
-
-
-=for comment
-From: Line 505 in tags.c
-
-=item i_tags_get_float(tags, name, code, value)
-
-
-Retrieves a tag as a floating point value.
-
-If the tag has a string value then that is parsed as a floating point
-number, otherwise the integer value of the tag is used.
-
-On success sets *I<value> and returns true.
-
-On failure returns false.
-
-
-=for comment
-From: Line 320 in tags.c
-
-=item i_tags_get_int(tags, name, code, &value)
-
-
-Retrieve a tag specified by name or code as an integer.
-
-On success sets the i_color *I<value> to the color and returns true.
-
-On failure returns false.
-
-
-=for comment
-From: Line 406 in tags.c
-
-=item i_tags_get_string(tags, name, code, value, value_size)
-
-
-Retrieves a tag by name or code as a string.
-
-On success copies the string to value for a max of value_size and
-returns true.
-
-On failure returns false.
-
-value_size must be at least large enough for a string representation
-of an integer.
-
-The copied value is always NUL terminated.
-
-
-=for comment
-From: Line 569 in tags.c
-
-=item i_tags_new(i_img_tags *tags)
-
-
-Initialize a tags structure. Should not be used if the tags structure
-has been previously used.
-
-This should be called tags member of an i_img object on creation (in
-i_img_*_new() functions).
-
-To destroy the contents use i_tags_destroy()
-
-
-=for comment
-From: Line 61 in tags.c
-
-=item i_tags_set(tags, name, data, size)
-
-
-Sets the given tag to the string I<data>
-
-
-=for comment
-From: Line 617 in tags.c
-
-=item i_tags_set_color(tags, name, code, &value)
-
-
-Stores the given color as a tag with the given name and code.
-
-
-=for comment
-From: Line 545 in tags.c
-
-=item i_tags_set_float(tags, name, code, value)
-
-
-Equivalent to i_tags_set_float2(tags, name, code, value, 30).
-
-
-=for comment
-From: Line 359 in tags.c
-
-=item i_tags_set_float2(tags, name, code, value, places)
-
-
-Sets the tag with the given name and code to the given floating point
-value.
-
-Since tags are strings or ints, we convert the value to a string before
-storage at the precision specified by C<places>.
-
-
-=for comment
-From: Line 374 in tags.c
-
-=item i_tags_setn(tags, name, idata)
-
-
-Sets the given tag to the integer I<idata>
-
-
-=for comment
-From: Line 634 in tags.c
-
-
-=back
-
-
-=head1 AUTHOR
-
-Tony Cook <tony@imager.perl.org>
-
-=head1 SEE ALSO
-
-Imager, Imager::ExtUtils, Imager::Inline
-
-=cut
--- /dev/null
+Do not edit this file, it is generated automatically by apidocs.perl
+from Imager's source files.
+
+Each function description has a comment listing the source file and
+line number where you can find the documentation.
+
+=head1 NAME
+
+Imager::APIRef - Imager's C API.
+
+=head1 SYNOPSIS
+
+ i_color color;
+ color.rgba.red = 255; color.rgba.green = 0; color.rgba.blue = 255;
+ i_fill_t *fill = i_new_fill_...(...);
+
+
+ # Drawing
+ i_arc(im, 50, 50, 20, 45, 135, &color);
+ i_arc_aa(im, 50, 50, 35, 90, 135, &color);
+ i_arc_aa_cfill(im, 50, 50, 35, 90, 135, fill);
+ i_arc_cfill(im, 50, 50, 35, 90, 135, fill);
+ i_box(im, 0, 0, im->xsize-1, im->ysize-1, &color).
+ i_box_cfill(im, 0, 0, im->xsize-1, im->ysize-1, fill);
+ i_box_filled(im, 0, 0, im->xsize-1, im->ysize-1, &color);
+ i_circle_aa(im, 50, 50, 45, &color);
+ i_flood_cfill(im, 50, 50, fill);
+ i_flood_fill(im, 50, 50, &color);
+
+ # Error handling
+
+ # Fills
+ fill = i_new_fill_fount(0, 0, 100, 100, i_ft_linear, i_ft_linear,
+ i_fr_triangle, 0, i_fts_grid, 9, 1, segs);
+
+ # Image
+
+ # Image creation
+
+ # Image quantization
+
+ # Paletted images
+
+ # Tags
+
+ i_fill_destroy(fill);
+
+=head1 DESCRIPTION
+
+=head2 Drawing
+
+=over
+
+=item i_arc(im, x, y, rad, d1, d2, color)
+
+
+Fills an arc centered at (x,y) with radius I<rad> covering the range
+of angles in degrees from d1 to d2, with the color.
+
+
+=for comment
+From: Line 205 in draw.c
+
+=item i_arc_aa(im, x, y, rad, d1, d2, color)
+
+
+Antialias fills an arc centered at (x,y) with radius I<rad> covering
+the range of angles in degrees from d1 to d2, with the color.
+
+
+=for comment
+From: Line 330 in draw.c
+
+=item i_arc_aa_cfill(im, x, y, rad, d1, d2, fill)
+
+
+Antialias fills an arc centered at (x,y) with radius I<rad> covering
+the range of angles in degrees from d1 to d2, with the fill object.
+
+
+=for comment
+From: Line 356 in draw.c
+
+=item i_arc_cfill(im, x, y, rad, d1, d2, fill)
+
+
+Fills an arc centered at (x,y) with radius I<rad> covering the range
+of angles in degrees from d1 to d2, with the fill object.
+
+
+=for comment
+From: Line 230 in draw.c
+
+=item i_box(im, x1, y1, x2, y2, color)
+
+
+Outlines the box from (x1,y1) to (x2,y2) inclusive with I<color>.
+
+
+=for comment
+From: Line 516 in draw.c
+
+=item i_box_cfill(im, x1, y1, x2, y2, fill)
+
+
+Fills the box from (x1,y1) to (x2,y2) inclusive with fill.
+
+
+=for comment
+From: Line 559 in draw.c
+
+=item i_box_filled(im, x1, y1, x2, y2, color)
+
+
+Fills the box from (x1,y1) to (x2,y2) inclusive with color.
+
+
+=for comment
+From: Line 541 in draw.c
+
+=item i_circle_aa(im, x, y, rad, color)
+
+
+Antialias fills a circle centered at (x,y) for radius I<rad> with
+color.
+
+
+=for comment
+From: Line 462 in draw.c
+
+=item i_flood_cfill(im, seedx, seedy, fill)
+
+
+Flood fills the 4-connected region starting from the point (seedx,
+seedy) with I<fill>.
+
+Returns false if (seedx, seedy) are outside the image.
+
+
+=for comment
+From: Line 1317 in draw.c
+
+=item i_flood_fill(im, seedx, seedy, color)
+
+
+Flood fills the 4-connected region starting from the point (seedx,
+seedy) with I<color>.
+
+Returns false if (seedx, seedy) are outside the image.
+
+
+=for comment
+From: Line 1280 in draw.c
+
+=item i_glin(im, l, r, y, colors)
+
+
+Retrieves (r-l) pixels starting from (l,y) into I<colors>.
+
+Returns the number of pixels retrieved.
+
+
+=for comment
+From: Line 202 in imext.c
+
+=item i_glinf(im, l, r, y, colors)
+
+
+Retrieves (r-l) pixels starting from (l,y) into I<colors> as floating
+point colors.
+
+Returns the number of pixels retrieved.
+
+
+=for comment
+From: Line 237 in imext.c
+
+=item i_gpal(im, x, r, y, indexes)
+
+
+Reads palette indexes for the horizontal line (x, y) to (r-1, y) into
+indexes.
+
+Returns the number of indexes read.
+
+Always returns 0 for direct color images.
+
+
+=for comment
+From: Line 301 in imext.c
+
+=item i_gpix(im, x, y, color)
+
+
+Retrieves the I<color> of the pixel (x,y).
+
+Returns 0 if the pixel was retrieved, or -1 if not.
+
+
+=for comment
+From: Line 130 in imext.c
+
+=item i_gpixf(im, x, y, fcolor)
+
+
+Retrieves the color of the pixel (x,y) as a floating point color into
+I<fcolor>.
+
+Returns 0 if the pixel was retrieved, or -1 if not.
+
+
+=for comment
+From: Line 166 in imext.c
+
+=item i_gsamp(im, l, r, y, samp, chans, chan_count)
+
+
+Reads sample values from im for the horizontal line (l, y) to (r-1,y)
+for the channels specified by chans, an array of int with chan_count
+elements.
+
+If chans is NULL then the first chan_count channels are retrieved for
+each pixel.
+
+Returns the number of samples read (which should be (r-l) *
+chan_count)
+
+
+=for comment
+From: Line 255 in imext.c
+
+=item i_gsampf(im, l, r, y, samp, chans, chan_count)
+
+
+Reads floating point sample values from im for the horizontal line (l,
+y) to (r-1,y) for the channels specified by chans, an array of int
+with chan_count elements.
+
+If chans is NULL then the first chan_count channels are retrieved for
+each pixel.
+
+Returns the number of samples read (which should be (r-l) *
+chan_count)
+
+
+=for comment
+From: Line 278 in imext.c
+
+=item i_line(im, x1, y1, x2, y2, val, endp)
+
+
+Draw a line to image using bresenhams linedrawing algorithm
+
+ im - image to draw to
+ x1 - starting x coordinate
+ y1 - starting x coordinate
+ x2 - starting x coordinate
+ y2 - starting x coordinate
+ val - color to write to image
+ endp - endpoint flag (boolean)
+
+
+=for comment
+From: Line 630 in draw.c
+
+=item i_line_aa(im, x1, x2, y1, y2, color, endp)
+
+
+Antialias draws a line from (x1,y1) to (x2, y2) in color.
+
+The point (x2, y2) is drawn only if endp is set.
+
+
+=for comment
+From: Line 834 in draw.c
+
+=item i_plin(im, l, r, y, colors)
+
+
+Sets (r-l) pixels starting from (l,y) using (r-l) values from
+I<colors>.
+
+Returns the number of pixels set.
+
+
+=for comment
+From: Line 184 in imext.c
+
+=item i_plinf(im, l, r, fcolors)
+
+
+Sets (r-l) pixels starting from (l,y) using (r-l) floating point
+colors from I<colors>.
+
+Returns the number of pixels set.
+
+
+=for comment
+From: Line 219 in imext.c
+
+=item i_ppal(im, x, r, y, indexes)
+
+
+Writes palette indexes for the horizontal line (x, y) to (r-1, y) from
+indexes.
+
+Returns the number of indexes written.
+
+Always returns 0 for direct color images.
+
+
+=for comment
+From: Line 320 in imext.c
+
+=item i_ppix(im, x, y, color)
+
+
+Sets the pixel at (x,y) to I<color>.
+
+Returns 0 if the pixel was drawn, or -1 if not.
+
+Does no alpha blending, just copies the channels from the supplied
+color to the image.
+
+
+=for comment
+From: Line 110 in imext.c
+
+=item i_ppixf(im, x, y, fcolor)
+
+
+Sets the pixel at (x,y) to the floating point color I<fcolor>.
+
+Returns 0 if the pixel was drawn, or -1 if not.
+
+Does no alpha blending, just copies the channels from the supplied
+color to the image.
+
+
+=for comment
+From: Line 147 in imext.c
+
+
+=back
+
+=head2 Error handling
+
+=over
+
+=item i_clear_error()
+
+
+Clears the error stack.
+
+Called by any imager function before doing any other processing.
+
+
+=for comment
+From: Line 185 in error.c
+
+=item i_push_error(int code, char const *msg)
+
+
+Called by an imager function to push an error message onto the stack.
+
+No message is pushed if the stack is full (since this means someone
+forgot to call i_clear_error(), or that a function that doesn't do
+error handling is calling function that does.).
+
+
+=for comment
+From: Line 211 in error.c
+
+=item i_push_errorf(int code, char const *fmt, ...)
+
+
+A version of i_push_error() that does printf() like formating.
+
+
+=for comment
+From: Line 273 in error.c
+
+=item i_push_errorvf(int code, char const *fmt, va_list ap)
+
+
+Intended for use by higher level functions, takes a varargs pointer
+and a format to produce the finally pushed error message.
+
+
+=for comment
+From: Line 249 in error.c
+
+
+=back
+
+=head2 Fills
+
+=over
+
+=item i_fill_destroy(fill)
+
+
+Call to destroy any fill object.
+
+
+=for comment
+From: Line 196 in fills.c
+
+=item i_new_fill_fount(xa, ya, xb, yb, type, repeat, combine, super_sample, ssample_param, count, segs)
+
+
+
+Creates a new general fill which fills with a fountain fill.
+
+
+=for comment
+From: Line 1713 in filters.c
+
+=item i_new_fill_hatch(fg, bg, combine, hatch, cust_hatch, dx, dy)
+
+
+Creates a new hatched fill with the fg color used for the 1 bits in
+the hatch and bg for the 0 bits. If combine is non-zero alpha values
+will be combined.
+
+If cust_hatch is non-NULL it should be a pointer to 8 bytes of the
+hash definition, with the high-bits to the left.
+
+If cust_hatch is NULL then one of the standard hatches is used.
+
+(dx, dy) are an offset into the hatch which can be used to unalign adjoining areas, or to align the origin of a hatch with the the side of a filled area.
+
+
+=for comment
+From: Line 427 in fills.c
+
+=item i_new_fill_hatchf(fg, bg, combine, hatch, cust_hatch, dx, dy)
+
+
+Creates a new hatched fill with the fg color used for the 1 bits in
+the hatch and bg for the 0 bits. If combine is non-zero alpha values
+will be combined.
+
+If cust_hatch is non-NULL it should be a pointer to 8 bytes of the
+hash definition, with the high-bits to the left.
+
+If cust_hatch is NULL then one of the standard hatches is used.
+
+(dx, dy) are an offset into the hatch which can be used to unalign adjoining areas, or to align the origin of a hatch with the the side of a filled area.
+
+
+=for comment
+From: Line 452 in fills.c
+
+=item i_new_fill_image(im, matrix, xoff, yoff, combine)
+
+
+Create an image based fill.
+
+matrix is an array of 9 doubles representing a transformation matrix.
+
+xoff and yoff are the offset into the image to start filling from.
+
+
+=for comment
+From: Line 489 in fills.c
+
+=item i_new_fill_solid(color, combine)
+
+
+Create a solid fill based on an 8-bit color.
+
+If combine is non-zero then alpha values will be combined.
+
+
+=for comment
+From: Line 244 in fills.c
+
+=item i_new_fill_solidf(color, combine)
+
+
+Create a solid fill based on a float color.
+
+If combine is non-zero then alpha values will be combined.
+
+
+=for comment
+From: Line 213 in fills.c
+
+
+=back
+
+=head2 Image
+
+=over
+
+=item i_copy(src)
+
+
+Creates a new image that is a copy of src.
+
+Tags are not copied, only the image data.
+
+Returns: i_img *
+
+
+=for comment
+From: Line 626 in image.c
+
+=item i_copyto(dest, src, x1, y1, x2, y2, tx, ty)
+
+
+Copies image data from the area (x1,y1)-[x2,y2] in the source image to
+a rectangle the same size with it's top-left corner at (tx,ty) in the
+destination image.
+
+If x1 > x2 or y1 > y2 then the corresponding co-ordinates are swapped.
+
+
+=for comment
+From: Line 557 in image.c
+
+=item i_copyto_trans(im, src, x1, y1, x2, y2, tx, ty, trans)
+
+
+(x1,y1) (x2,y2) specifies the region to copy (in the source coordinates)
+(tx,ty) specifies the upper left corner for the target image.
+pass NULL in trans for non transparent i_colors.
+
+
+=for comment
+From: Line 515 in image.c
+
+=item i_img_destroy(im)
+
+
+Destroy image and free data via exorcise.
+
+ im - Image pointer
+
+
+=for comment
+From: Line 424 in image.c
+
+=item i_img_info(im, info)
+
+
+Return image information
+
+ im - Image pointer
+ info - pointer to array to return data
+
+info is an array of 4 integers with the following values:
+
+ info[0] - width
+ info[1] - height
+ info[2] - channels
+ info[3] - channel mask
+
+
+=for comment
+From: Line 443 in image.c
+
+=item i_rubthru(im, src, tx, ty, src_minx, src_miny, src_maxx, src_maxy )
+
+
+Takes the sub image I<src[src_minx, src_maxx)[src_miny, src_maxy)> and
+overlays it at (I<tx>,I<ty>) on the image object.
+
+The alpha channel of each pixel in I<src> is used to control how much
+the existing colour in I<im> is replaced, if it is 255 then the colour
+is completely replaced, if it is 0 then the original colour is left
+unmodified.
+
+
+=for comment
+From: Line 701 in image.c
+
+
+=back
+
+=head2 Image creation
+
+=over
+
+=item i_img_16_new(x, y, ch)
+
+
+Create a new 16-bit/sample image.
+
+Returns the image on success, or NULL on failure.
+
+
+=for comment
+From: Line 192 in img16.c
+
+=item i_img_8_new(x, y, ch)
+
+
+Creates a new image object I<x> pixels wide, and I<y> pixels high with
+I<ch> channels.
+
+
+=for comment
+From: Line 257 in image.c
+
+=item i_img_double_new(int x, int y, int ch)
+
+
+Creates a new double per sample image.
+
+
+=for comment
+From: Line 82 in imgdouble.c
+
+=item i_img_pal_new(x, y, channels, maxpal)
+
+
+Creates a new paletted image of the supplied dimensions.
+
+Returns a new image or NULL on failure.
+
+
+=for comment
+From: Line 136 in palimg.c
+
+=item i_sametype(i_img *im, int xsize, int ysize)
+
+
+Returns an image of the same type (sample size, channels, paletted/direct).
+
+For paletted images the palette is copied from the source.
+
+
+=for comment
+From: Line 1107 in image.c
+
+=item i_sametype_chans(i_img *im, int xsize, int ysize, int channels)
+
+
+Returns an image of the same type (sample size).
+
+For paletted images the equivalent direct type is returned.
+
+
+=for comment
+From: Line 1149 in image.c
+
+
+=back
+
+=head2 Image quantization
+
+=over
+
+=item i_quant_makemap(quant, imgs, count)
+
+
+Analyzes the I<count> images in I<imgs> according to the rules in
+I<quant> to build a color map (optimal or not depending on
+quant->make_colors).
+
+
+=for comment
+From: Line 30 in quant.c
+
+=item i_quant_translate(quant, img)
+
+
+Quantize the image given the palette in quant.
+
+On success returns a pointer to a memory block of img->xsize *
+img->ysize i_palidx entries.
+
+On failure returns NULL.
+
+You should call myfree() on the returned block when you're done with
+it.
+
+This function will fail if the supplied palette contains no colors.
+
+
+=for comment
+From: Line 86 in quant.c
+
+=item i_quant_transparent(quant, data, img, trans_index)
+
+
+Dither the alpha channel on I<img> into the palette indexes in
+I<data>. Pixels to be transparent are replaced with I<trans_pixel>.
+
+The method used depends on the tr_* members of quant.
+
+
+=for comment
+From: Line 1470 in quant.c
+
+
+=back
+
+=head2 Paletted images
+
+=over
+
+=item i_addcolors(im, colors, count)
+
+
+Adds colors to the image's palette.
+
+On success returns the index of the lowest color added.
+
+On failure returns -1.
+
+Always fails for direct color images.
+
+
+=for comment
+From: Line 339 in imext.c
+
+=item i_colorcount(im)
+
+
+Returns the number of colors in the image's palette.
+
+Returns -1 for direct images.
+
+
+=for comment
+From: Line 385 in imext.c
+
+=item i_findcolor(im, color, &entry)
+
+
+Searches the images palette for the given color.
+
+On success sets *I<entry> to the index of the color, and returns true.
+
+On failure returns false.
+
+Always fails on direct color images.
+
+
+=for comment
+From: Line 420 in imext.c
+
+=item i_getcolors(im, index, colors, count)
+
+
+Retrieves I<count> colors starting from I<index> in the image's
+palette.
+
+On success stores the colors into I<colors> and returns true.
+
+On failure returns false.
+
+Always fails for direct color images.
+
+Fails if there are less than I<index>+I<count> colors in the image's
+palette.
+
+
+=for comment
+From: Line 360 in imext.c
+
+=item i_maxcolors(im)
+
+
+Returns the maximum number of colors the palette can hold for the
+image.
+
+Returns -1 for direct color images.
+
+
+=for comment
+From: Line 402 in imext.c
+
+=item i_setcolors(im, index, colors, count)
+
+
+Sets I<count> colors starting from I<index> in the image's palette.
+
+On sucess returns true.
+
+On failure returns false.
+
+The image must have at least I<index>+I<count> colors in it's palette
+for this to succeed.
+
+Always fails on direct color images.
+
+
+=for comment
+From: Line 440 in imext.c
+
+
+=back
+
+=head2 Tags
+
+=over
+
+=item i_tags_delbycode(tags, code)
+
+
+Delete any tags with the given code.
+
+Returns the number of tags deleted.
+
+
+=for comment
+From: Line 294 in tags.c
+
+=item i_tags_delbyname(tags, name)
+
+
+Delete any tags with the given name.
+
+Returns the number of tags deleted.
+
+
+=for comment
+From: Line 264 in tags.c
+
+=item i_tags_delete(tags, index)
+
+
+Delete a tag by index.
+
+Returns true on success.
+
+
+=for comment
+From: Line 235 in tags.c
+
+=item i_tags_destroy(tags)
+
+
+Destroys the given tags structure. Called by i_img_destroy().
+
+
+=for comment
+From: Line 158 in tags.c
+
+=item i_tags_find(tags, name, start, &entry)
+
+
+Searchs for a tag of the given I<name> starting from index I<start>.
+
+On success returns true and sets *I<entry>.
+
+On failure returns false.
+
+
+=for comment
+From: Line 181 in tags.c
+
+=item i_tags_findn(tags, code, start, &entry)
+
+
+Searchs for a tag of the given I<code> starting from index I<start>.
+
+On success returns true and sets *I<entry>.
+
+On failure returns false.
+
+
+=for comment
+From: Line 208 in tags.c
+
+=item i_tags_get_color(tags, name, code, &value)
+
+
+Retrieve a tag specified by name or code as color.
+
+On success sets the i_color *I<value> to the color and returns true.
+
+On failure returns false.
+
+
+=for comment
+From: Line 505 in tags.c
+
+=item i_tags_get_float(tags, name, code, value)
+
+
+Retrieves a tag as a floating point value.
+
+If the tag has a string value then that is parsed as a floating point
+number, otherwise the integer value of the tag is used.
+
+On success sets *I<value> and returns true.
+
+On failure returns false.
+
+
+=for comment
+From: Line 320 in tags.c
+
+=item i_tags_get_int(tags, name, code, &value)
+
+
+Retrieve a tag specified by name or code as an integer.
+
+On success sets the i_color *I<value> to the color and returns true.
+
+On failure returns false.
+
+
+=for comment
+From: Line 406 in tags.c
+
+=item i_tags_get_string(tags, name, code, value, value_size)
+
+
+Retrieves a tag by name or code as a string.
+
+On success copies the string to value for a max of value_size and
+returns true.
+
+On failure returns false.
+
+value_size must be at least large enough for a string representation
+of an integer.
+
+The copied value is always NUL terminated.
+
+
+=for comment
+From: Line 569 in tags.c
+
+=item i_tags_new(i_img_tags *tags)
+
+
+Initialize a tags structure. Should not be used if the tags structure
+has been previously used.
+
+This should be called tags member of an i_img object on creation (in
+i_img_*_new() functions).
+
+To destroy the contents use i_tags_destroy()
+
+
+=for comment
+From: Line 61 in tags.c
+
+=item i_tags_set(tags, name, data, size)
+
+
+Sets the given tag to the string I<data>
+
+
+=for comment
+From: Line 617 in tags.c
+
+=item i_tags_set_color(tags, name, code, &value)
+
+
+Stores the given color as a tag with the given name and code.
+
+
+=for comment
+From: Line 545 in tags.c
+
+=item i_tags_set_float(tags, name, code, value)
+
+
+Equivalent to i_tags_set_float2(tags, name, code, value, 30).
+
+
+=for comment
+From: Line 359 in tags.c
+
+=item i_tags_set_float2(tags, name, code, value, places)
+
+
+Sets the tag with the given name and code to the given floating point
+value.
+
+Since tags are strings or ints, we convert the value to a string before
+storage at the precision specified by C<places>.
+
+
+=for comment
+From: Line 374 in tags.c
+
+=item i_tags_setn(tags, name, idata)
+
+
+Sets the given tag to the integer I<idata>
+
+
+=for comment
+From: Line 634 in tags.c
+
+
+=back
+
+
+=head1 AUTHOR
+
+Tony Cook <tony@imager.perl.org>
+
+=head1 SEE ALSO
+
+Imager, Imager::ExtUtils, Imager::Inline
+
+=cut
projects / imager.git / commitdiff