| Overview |  |
img_head_t() = {jpeg_head | png_head, {integer(), integer(), integer(), integer()}}
| deflate_stream/1 | Compress a bit stream using the zlib/deflate algorithm. |
| get_head_info/1 | When called with a file path string, this returns a tuple of info on the jpeg at the file path location. |
| get_png_content/1 | opens the PNG file indicated by the calling parameter and returns a tuple like [Params, MoreParams, Palette, Image2 , Alpha_channel]. |
| inflate_stream/1 | Decompress a bit stream using the zlib/deflate algorithm. |
| mk_images/4 | mk_images takes a list of images and turns them into PDF XObjects to go into the PDF document. |
| process_header/1 | It can also follow the following pattern:. |
deflate_stream(Data::binary()) -> {ok, binary()}
Compress a bit stream using the zlib/deflate algorithm
get_head_info(File::file:name_all()) -> atom() | img_head_t()
When called with a file path string, this returns a tuple of info
on the jpeg at the file path location. The tuple is like the following
get_png_content(File::file:name_all()) -> error | term()
opens the PNG file indicated by the calling parameter and returns a tuple like [Params, MoreParams, Palette, Image2 , Alpha_channel]. This has the Parameters that descibe the image and the content of the image as appropriate for the type of PNG. Palette has the color palatte for indexed color images. Image2 has the image pixels. Alpha_channel has the transparaency overlay to control the display of the Image2 pixels.
inflate_stream(Data::binary()) -> {ok, binary()}
Decompress a bit stream using the zlib/deflate algorithm
mk_images(T::Images, I::Count, Is::[], Os::[]) -> {Free, XObjects, O0s}
mk_images takes a list of images and turns them into PDF XObjects to go into the PDF document.
process_header(Any::binary()) -> img_head_t()
It can also follow the following pattern:
process_header(image content) ->{png_head,{Width, Height, Color_type, Data_precision}}, {params, Compression, Filter_method, Interface_method}, Palette, Image, Alpha_channel].
Same as get_head_info except it is called with a binary that holds the content of a JPG file. This returns a tuple of info on the jpeg. The tuple is like the followingGenerated by EDoc