jpg(1) - Plan 9 from User Space

From adc93f6097615f16d57e8a24a256302f2144ec4e Mon Sep 17 00:00:00 2001 From: rsc Date: Fri, 14 Jan 2005 17:37:50 +0000 Subject: cut out the html - they're going to cause diffing problems. --- man/man1/jpg.html | 175 ------------------------------------------------------ 1 file changed, 175 deletions(-) delete mode 100644 man/man1/jpg.html (limited to 'man/man1/jpg.html') diff --git a/man/man1/jpg.html b/man/man1/jpg.html deleted file mode 100644 index 30629c7c..00000000 --- a/man/man1/jpg.html +++ /dev/null @@ -1,175 +0,0 @@ - -jpg(1) - Plan 9 from User Space - - - - -

JPG(1) JPG(1) -

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-

NAME
- -
- - jpg, gif, png, ppm, bmp, yuv, ico, togif, toppm, topng, toico - – view and convert pictures
- -
-

SYNOPSIS
- -
- - jpg [ −39cdefFkJrtv ] [ file ... ]
- gif [ −39cdektv ] [ file ... ]
- png [ −39cdektv ] [ file ... ]
- ppm [ −39cdektv ] [ file ... ]
- bmp [ file ]
- yuv [ file ] -
- - togif [ −c comment ] [ −l loopcount ] [ −d msec ] [ −t transindex - ] [ file ... [ −d msec ] file ... ]
- toppm [ −c comment ] [ file ]
- topng [ −c comment ] [ [ −g gamma ] [ file ] -
- - ico [ file ]
- toico [ file ... ]
- -
-

DESCRIPTION
- -
- - These programs read, display, and write image files in public - formats. Jpg, gif, png, ppm, bmp, and yuv. read files in the corresponding - formats and, by default, display them in the current window; options - cause them instead to convert the images to Plan 9 image format - and write them to standard output. Togif, - Toppm, and topng read Plan 9 images files, convert them to GIF, - PPM, or PNG, and write them to standard output. -
- - The default behavior of jpg, gif, and ppm is to display the file, - or standard input if no file is named. Once a file is displayed, - typing a character causes the program to display the next image. - Typing a q, DEL, or control-D exits the program. For a more user-friendly - interface, use page(1), which invokes these - programs to convert the images to standard format, displays them, - and offers scrolling, panning, and menu-driven navigation among - the files. -
- - These programs share many options:
- −e    Disable Floyd-Steinberg error diffusion, which is used to improve - the appearance of images on color-mapped displays, typically with - 8 bits per pixel. Primarily useful for debugging; if the display - has true RGB color, the image will be displayed in full glory.
- −k    Convert and display the image as a black and white (really grey-scale) - image.
- −v    Convert the image to an RGBV color-mapped image, even if the - display has true RGB color.
- −d    Suppress display of the image; this is set automatically by - any of the following options:
- −c    Convert the image to a Plan 9 representation, as defined by - image(7), and write it to standard output.
- −9    Like −c, but produce an uncompressed image. This saves processing - time, particularly when the output is being piped to another program - such as page(1), since it avoids compression and decompression.
- −t    Convert the image, if it is in color, to a true color RGB image.
- −3    Like −t, but force the image to RGB even if it is originally - grey-scale. -
- - Jpg has two extra options used to process the output of the LML - video card:
- −f    Merge two adjacent images, which represent the two fields of - a video picture, into a single image.
- −F    The input is a motion JPEG file, with multiple images representing - frames of the movie. Sets −f. -
- - The togif and toppm programs go the other way: they convert from - Plan 9 images to GIF and PPM, and have no display capability. - Both accept an option −c to set the comment field of the resulting - file. If there is only one input picture, togif converts the image - to GIF format. If there are many files, though, it will - assemble them into an animated GIF file. The options control this - process:
- −lloopcount
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- - By default, the animation will loop forever; loopcount specifies - how many times to loop. A value of zero means loop forever and - a negative value means to stop after playing the sequence once.
- -
- −dmsec
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- - By default, the images are displayed as fast as they can be rendered. - This option specifies the time, in milliseconds, to pause while - displaying the next named file. -
- - -
- Gif translates files that contain a ‘transparency’ index by attaching - an alpha channel to the converted image. -
- - Ico displays a Windows icon (.ico) file. If no file is specified, - ico reads from standard input. Icon files contain sets of icons - represeted by an image and a mask. Clicking the right button pops - up a menu that lets you write any icon’s image as a Plan 9 image - (widthxheight.image), write any icon’s mask as a Plan 9 - image (widthxheight.mask), or exit. Selecting one of the write - menu items yields a sight cursor. Move the sight over the icon - and right click again to write. -
- - Toico takes a list of Plan 9 image files (or standard input) and - creates a single icon file. The masks in the icon file will be - the white space in the image. The icon file is written to standard - output.
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SOURCE
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- - /usr/local/plan9/src/cmd/jpg - -
-

SEE ALSO
- -
- - page(1), image(7).
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-

BUGS
- -
- - Writing an animated GIF using togif is a clumsy undertaking.
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- -

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