mirror of
https://github.com/ahabhyde/miguelbridge
synced 2025-01-10 22:44:20 +01:00
c835732151
Added support for tg stickers (converted into png images) Fixed a bug in where a tg user without surname would send message with "null" as surname
347 lines
9.1 KiB
HTML
347 lines
9.1 KiB
HTML
<!-- Creator : groff version 1.19.2 -->
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<!-- CreationDate: Fri Sep 19 17:51:06 2014 -->
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
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"http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta name="generator" content="groff -Thtml, see www.gnu.org">
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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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<meta name="Content-Style" content="text/css">
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<style type="text/css">
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p { margin-top: 0; margin-bottom: 0; }
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pre { margin-top: 0; margin-bottom: 0; }
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table { margin-top: 0; margin-bottom: 0; }
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</style>
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<title>DWEBP</title>
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</head>
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<body>
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<h1 align=center>DWEBP</h1>
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<a href="#NAME">NAME</a><br>
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<a href="#SYNOPSIS">SYNOPSIS</a><br>
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<a href="#DESCRIPTION">DESCRIPTION</a><br>
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<a href="#OPTIONS">OPTIONS</a><br>
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<a href="#BUGS">BUGS</a><br>
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<a href="#EXAMPLES">EXAMPLES</a><br>
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<a href="#AUTHORS">AUTHORS</a><br>
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<a href="#SEE ALSO">SEE ALSO</a><br>
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<hr>
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<a name="NAME"></a>
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<h2>NAME</h2>
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<p style="margin-left:11%; margin-top: 1em">dwebp −
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decompress a WebP file to an image file</p>
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<a name="SYNOPSIS"></a>
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<h2>SYNOPSIS</h2>
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<p style="margin-left:11%; margin-top: 1em"><b>dwebp</b>
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[<i>options</i>] <i>input_file.webp</i></p>
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<a name="DESCRIPTION"></a>
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<h2>DESCRIPTION</h2>
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<p style="margin-left:11%; margin-top: 1em">This manual
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page documents the <b>dwebp</b> command.</p>
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<p style="margin-left:11%; margin-top: 1em"><b>dwebp</b>
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decompresses WebP files into PNG, PAM, PPM or PGM
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images.</p>
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<a name="OPTIONS"></a>
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<h2>OPTIONS</h2>
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<p style="margin-left:11%; margin-top: 1em">The basic
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options are:</p>
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<table width="100%" border=0 rules="none" frame="void"
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cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="3%">
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<p style="margin-top: 1em" valign="top"><b>−h</b></p> </td>
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<td width="8%"></td>
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<td width="30%">
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<p style="margin-top: 1em" valign="top">Print usage
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summary.</p> </td>
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<td width="48%">
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</td>
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</table>
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<p style="margin-left:11%;"><b>−version</b></p>
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<p style="margin-left:22%;">Print the version number (as
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major.minor.revision) and exit.</p>
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<p style="margin-left:11%;"><b>−o</b>
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<i>string</i></p>
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<p style="margin-left:22%;">Specify the name of the output
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file (as PNG format by default). Using "-" as
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output name will direct output to ’stdout’.</p>
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<p style="margin-left:11%;"><b>−−</b>
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<i>string</i></p>
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<p style="margin-left:22%;">Explicitly specify the input
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file. This option is useful if the input file starts with an
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’−’ for instance. This option must appear
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<b>last</b>. Any other options afterward will be ignored. If
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the input file is "−", the data will be read
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from <i>stdin</i> instead of a file.</p>
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<table width="100%" border=0 rules="none" frame="void"
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cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="7%">
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<p style="margin-top: 1em" valign="top"><b>−bmp</b></p> </td>
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<td width="4%"></td>
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<td width="78%">
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<p style="margin-top: 1em" valign="top">Change the output
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format to uncompressed BMP.</p></td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="7%">
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<p style="margin-top: 1em" valign="top"><b>−tiff</b></p> </td>
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<td width="4%"></td>
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<td width="78%">
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<p style="margin-top: 1em" valign="top">Change the output
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format to uncompressed TIFF.</p></td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="7%">
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<p style="margin-top: 1em" valign="top"><b>−pam</b></p> </td>
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<td width="4%"></td>
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<td width="78%">
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<p style="margin-top: 1em" valign="top">Change the output
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format to PAM (retains alpha).</p></td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="7%">
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<p style="margin-top: 1em" valign="top"><b>−ppm</b></p> </td>
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<td width="4%"></td>
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<td width="78%">
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<p style="margin-top: 1em" valign="top">Change the output
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format to PPM (discards alpha).</p></td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="7%">
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<p style="margin-top: 1em" valign="top"><b>−pgm</b></p> </td>
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<td width="4%"></td>
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<td width="78%">
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<p style="margin-top: 1em" valign="top">Change the output
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format to PGM. The output consists of luma/chroma samples
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instead of RGB, using the IMC4 layout. This option is mainly
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for verification and debugging purposes.</p></td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="7%">
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<p style="margin-top: 1em" valign="top"><b>−yuv</b></p> </td>
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<td width="4%"></td>
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<td width="78%">
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<p style="margin-top: 1em" valign="top">Change the output
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format to raw YUV. The output consists of
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luma/chroma-U/chroma-V samples instead of RGB, saved
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sequentially as individual planes. This option is mainly for
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verification and debugging purposes.</p></td>
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</table>
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<p style="margin-left:11%;"><b>−nofancy</b></p>
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<p style="margin-left:22%;">Don’t use the fancy
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upscaler for YUV420. This may lead to jaggy edges
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(especially the red ones), but should be faster.</p>
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<p style="margin-left:11%;"><b>−nofilter</b></p>
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<p style="margin-left:22%;">Don’t use the in-loop
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filtering process even if it is required by the bitstream.
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This may produce visible blocks on the non-compliant output,
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but it will make the decoding faster.</p>
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<p style="margin-left:11%;"><b>−dither</b>
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<i>strength</i></p>
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<p style="margin-left:22%;">Specify a dithering
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<b>strength</b> between 0 and 100. Dithering is a
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post-processing effect applied to chroma components in lossy
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compression. It helps by smoothing gradients and avoiding
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banding artifacts.</p>
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<p style="margin-left:11%;"><b>−nodither</b></p>
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<p style="margin-left:22%;">Disable all dithering
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(default).</p>
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<table width="100%" border=0 rules="none" frame="void"
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cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="4%">
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<p style="margin-top: 1em" valign="top"><b>−mt</b></p> </td>
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<td width="7%"></td>
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<td width="70%">
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<p style="margin-top: 1em" valign="top">Use multi-threading
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for decoding, if possible.</p></td>
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<td width="8%">
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</td>
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</table>
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<p style="margin-left:11%;"><b>−crop</b>
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<i>x_position y_position width height</i></p>
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<p style="margin-left:22%;">Crop the decoded picture to a
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rectangle with top-left corner at coordinates
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(<b>x_position</b>, <b>y_position</b>) and size <b>width</b>
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x <b>height</b>. This cropping area must be fully contained
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within the source rectangle. The top-left corner will be
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snapped to even coordinates if needed. This option is meant
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to reduce the memory needed for cropping large images. Note:
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the cropping is applied <i>before</i> any scaling.</p>
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<p style="margin-left:11%;"><b>−scale</b> <i>width
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height</i></p>
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<p style="margin-left:22%;">Rescale the decoded picture to
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dimension <b>width</b> x <b>height</b>. This option is
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mostly intended to reducing the memory needed to decode
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large images, when only a small version is needed
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(thumbnail, preview, etc.). Note: scaling is applied
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<i>after</i> cropping.</p>
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<table width="100%" border=0 rules="none" frame="void"
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cellspacing="0" cellpadding="0">
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="9%">
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<p style="margin-top: 1em" valign="top"><b>−v</b></p> </td>
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<td width="2%"></td>
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<td width="78%">
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<p style="margin-top: 1em" valign="top">Print extra
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information (decoding time in particular).</p></td>
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<tr valign="top" align="left">
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<td width="11%"></td>
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<td width="9%">
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<p style="margin-top: 1em" valign="top"><b>−noasm</b></p> </td>
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<td width="2%"></td>
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<td width="78%">
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<p style="margin-top: 1em" valign="top">Disable all
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assembly optimizations.</p></td>
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</table>
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<a name="BUGS"></a>
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<h2>BUGS</h2>
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<p style="margin-left:11%; margin-top: 1em">Please report
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all bugs to our issue tracker:
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http://code.google.com/p/webp/issues <br>
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Patches welcome! See this page to get started:
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http://www.webmproject.org/code/contribute/submitting-patches/</p>
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<a name="EXAMPLES"></a>
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<h2>EXAMPLES</h2>
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<p style="margin-left:11%; margin-top: 1em">dwebp
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picture.webp −o output.png <br>
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dwebp picture.webp −ppm −o output.ppm <br>
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dwebp −o output.ppm −−
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−−−picture.webp <br>
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cat picture.webp | dwebp −o − −−
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− > output.ppm</p>
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<a name="AUTHORS"></a>
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<h2>AUTHORS</h2>
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<p style="margin-left:11%; margin-top: 1em"><b>dwebp</b>
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was written by the WebP team. <br>
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The latest source tree is available at
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http://www.webmproject.org/code</p>
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<p style="margin-left:11%; margin-top: 1em">This manual
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page was written by Pascal Massimino
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<pascal.massimino@gmail.com>, for the Debian project
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(and may be used by others).</p>
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<a name="SEE ALSO"></a>
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<h2>SEE ALSO</h2>
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<p style="margin-left:11%; margin-top: 1em"><b>cwebp</b>(1),
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<b>gif2webp</b>(1), <b>webpmux</b>(1) <br>
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Please refer to http://developers.google.com/speed/webp/ for
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additional information.</p>
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<p style="margin-left:11%; margin-top: 1em"><b>Output file
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format details</b> <br>
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PAM: http://netpbm.sourceforge.net/doc/pam.html <br>
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PGM: http://netpbm.sourceforge.net/doc/pgm.html <br>
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PPM: http://netpbm.sourceforge.net/doc/ppm.html <br>
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PNG: http://www.libpng.org/pub/png/png-sitemap.html#info</p>
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<hr>
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</body>
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</html>
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