| .\" Hey, EMACS: -*- nroff -*- |
| .TH DWP2 1 "June 8, 2022" |
| .SH NAME |
| dwp2 \- decompress a WP2 file to an image file |
| .SH SYNOPSIS |
| .B dwp2 |
| .RI [ options ] " input_file.wp2 |
| .br |
| .SH DESCRIPTION |
| This manual page documents the |
| .B dwp2 |
| command. |
| .PP |
| \fBdwp2\fP decompresses WP2 files into PNG, PAM, PPM or PGM images. |
| .SH OPTIONS |
| The basic options are: |
| .TP |
| .B \-h |
| Print usage summary. |
| .TP |
| .B \-version |
| Print the version number (as major.minor.revision) and exit. |
| .TP |
| .BI \-o " string |
| Specify the name of the output file (as PNG format by default). |
| Using "-" as output name will direct output to 'stdout'. |
| .TP |
| .BI \-\- " string |
| Explicitly specify the input file. This option is useful if the input |
| file starts with an '\-' for instance. This option must appear \fBlast\fP. |
| Any other options afterward will be ignored. If the input file is "\-", |
| the data will be read from \fIstdin\fP instead of a file. |
| .TP |
| .B \-bmp |
| Change the output format to uncompressed BMP. |
| .TP |
| .B \-tiff |
| Change the output format to uncompressed TIFF. |
| .TP |
| .B \-pam |
| Change the output format to PAM (retains alpha). |
| .TP |
| .B \-ppm |
| Change the output format to PPM (discards alpha). |
| .TP |
| .B \-pgm |
| Change the output format to PGM. The output consists of luma/chroma |
| samples instead of RGB, using the IMC4 layout. This option is mainly |
| for verification and debugging purposes. |
| .TP |
| .B \-mt |
| Use multi\-threaded parallel decoding if possible. |
| .TP |
| .B \-dbg |
| Superimpose visual debugging information on the decoded picture. |
| .TP |
| .B \-v |
| Print extra information (decoding time in particular). |
| |
| .SH BUGS |
| Please report all bugs to the issue tracker: |
| https://bugs.chromium.org/p/webp2 |
| .br |
| Patches welcome! See this page to get started: |
| http://www.webmproject.org/code/contribute/submitting-patches/ |
| |
| .SH EXAMPLES |
| dwp2 picture.wp2 \-o output.png |
| .br |
| |
| .SH AUTHORS |
| \fBdwp2\fP is a part of libwebp2 and was written by the WebP team. |
| .br |
| The latest source tree is available at |
| https://chromium.googlesource.com/codecs/libwebp2/ |
| .PP |
| This manual page was written by Pascal Massimino <pascal.massimino@gmail.com>, |
| for the Debian project (and may be used by others). |
| |
| .SH SEE ALSO |
| .BR cwp2 (1), vwp2(1) |
| .SS Output file format details |
| PAM: http://netpbm.sourceforge.net/doc/pam.html |
| .br |
| PGM: http://netpbm.sourceforge.net/doc/pgm.html |
| .br |
| PPM: http://netpbm.sourceforge.net/doc/ppm.html |
| .br |
| PNG: http://www.libpng.org/pub/png/png-sitemap.html#info |
