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dwebp: add -resize as a synonym for -scale

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-resize is used in cwebp for the same purpose

Change-Id: I2756f3d23c4799fc9a10c4fe8c4c17057beebca9
This commit is contained in:
James Zern 2015-08-13 20:54:02 -07:00
parent 24a9693223
commit 1e595fe1e8
2 changed files with 8 additions and 5 deletions
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5
examples/dwebp.c
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@ -549,7 +549,7 @@ static void Help(void) {
" -alpha_dither use alpha-plane dithering if needed\n"
" -mt .......... use multi-threading\n"
" -crop <x> <y> <w> <h> ... crop output with the given rectangle\n"
" -scale <w> <h> .......... scale the output (*after* any cropping)\n"
" -resize <w> <h> ......... scale the output (*after* any cropping)\n"
" -flip ........ flip the output vertically\n"
" -alpha ....... only save the alpha plane\n"
" -incremental . use incremental decoding (useful for tests)\n"
@ -627,7 +627,8 @@ int main(int argc, const char *argv[]) {
config.options.crop_top = ExUtilGetInt(argv[++c], 0, &parse_error);
config.options.crop_width = ExUtilGetInt(argv[++c], 0, &parse_error);
config.options.crop_height = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-scale") && c < argc - 2) {
} else if ((!strcmp(argv[c], "-scale") || !strcmp(argv[c], "-resize")) &&
c < argc - 2) { // '-scale' is left for compatibility
config.options.use_scaling = 1;
config.options.scaled_width = ExUtilGetInt(argv[++c], 0, &parse_error);
config.options.scaled_height = ExUtilGetInt(argv[++c], 0, &parse_error);

6
man/dwebp.1
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@ -1,5 +1,5 @@
.\" Hey, EMACS: -*- nroff -*-
.TH DWEBP 1 "June 13, 2014"
.TH DWEBP 1 "August 13, 2015"
.SH NAME
dwebp \- decompress a WebP file to an image file
.SH SYNOPSIS
@ -90,11 +90,13 @@ Note: the cropping is applied \fIbefore\fP any scaling.
.B \-flip
Flip decoded image vertically (can be useful for OpenGL textures for instance).
.TP
.BI \-scale " width height
\fB\-resize\fR, \fB\-scale\fI width height\fR
Rescale the decoded picture to dimension \fBwidth\fP x \fBheight\fP. This
option is mostly intended to reducing the memory needed to decode large images,
when only a small version is needed (thumbnail, preview, etc.). Note: scaling
is applied \fIafter\fP cropping.
If either (but not both) of the \fBwidth\fP or \fBheight\fP parameters is 0,
the value will be calculated preserving the aspect-ratio.
.TP
.B \-v
Print extra information (decoding time in particular).