62207228f7
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29066 a1c6a512-1295-4272-9138-f99709370657
37 lines
1.5 KiB
Text
37 lines
1.5 KiB
Text
this document describes how to add new image decoder.
|
|
|
|
1. create a directory which name is your image decoder's name and put source files
|
|
under the directory.
|
|
'const struct image_decoder image_decoder' and 'IMGDEC_HEADER' must be declared in
|
|
one of your source files.
|
|
see imageviewer.h for the detail of struct image_decoder.
|
|
|
|
2. add the directory name to apps/plugins/imageviewer/SUBDIR so that the decoder
|
|
is built.
|
|
if the decoder is supported by particular targets, surround it with #if directive.
|
|
e.g. if the decoder supports color LCD targets only,
|
|
#ifdef HAVE_LCD_COLOR
|
|
bmp
|
|
#endif
|
|
|
|
3. append appropriate entry to enum image_type in image_decoder.h, decoder_names
|
|
and ext_list in image_decoder.c so that the imageviewer plugin can recognize
|
|
the decoder.
|
|
if the decoder is supported by particular targets, surround them with same #if
|
|
directive in SUBDIR.
|
|
|
|
4. add entry to apps/plugins/viewers.config
|
|
(in format: file_extension,viewer/imageviewer) so that the file with specified
|
|
file extension will be opened by image viewer plugin.
|
|
if the decoder is supported by particular targets, surround it with same #if
|
|
directive in SUBDIR.
|
|
|
|
5. add entry to apps/plugins/CATEGORIES (in format: decoder_name,viewer) so
|
|
that the build file is copied to viewers directory.
|
|
DON'T surround this with #if directive.
|
|
|
|
|
|
notes:
|
|
if you need to use greylib functions to draw image, add the functions to
|
|
struct imgdec_api just like gray_bitmap_part because GREY_INFO_STRUCT is
|
|
declared in imageviewer and is not available from the decoder.
|