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Chunk fourCCs for XMP/EXIF

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Use separate fourCCs "XMP " and "EXIF" instead of a common "META"
Also, some refactorization in webpmux.c

Change-Id: Iad3337e5c1b81e785c60670ce28b1f536dd7ee31
This commit is contained in:
Urvang Joshi
2012-10-31 16:30:41 -07:00
parent 52ad1979d2
commit f903cbab9a
11 changed files with 208 additions and 147 deletions
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60
man/webpmux.1
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@ -48,10 +48,13 @@ and extract/strip relevant data from the container file.
.SS GET_OPTIONS (\-get):
.TP
.B icc
Get ICC Color profile.
Get ICC profile.
.TP
.B meta
Get XMP/EXIF metadata.
.B exif
Get EXIF metadata.
.TP
.B xmp
Get XMP metadata.
.TP
.B tile n
Get nth tile.
@ -62,33 +65,41 @@ Get nth frame.
.SS SET_OPTIONS (\-set)
.TP
.B icc file.icc
Set ICC Color profile.
Set ICC profile.
.P
Where: 'file.icc' contains the color profile to be set.
Where: 'file.icc' contains the ICC profile to be set.
.TP
.B meta file.meta
Set XMP/EXIF metadata.
.B exif file.exif
Set EXIF metadata.
.P
Where: 'file.meta' contains the metadata to be set.
Where: 'file.exif' contains the EXIF metadata to be set.
.TP
.B xmp file.xmp
Set XMP metadata.
.P
Where: 'file.xmp' contains the XMP metadata to be set.
.SS STRIP_OPTIONS (\-strip)
.TP
.B icc
Strip ICC Color profile.
Strip ICC profile.
.TP
.B meta
Strip XMP/EXIF metadata.
.B exif
Strip EXIF metadata.
.TP
.B xmp
Strip XMP metadata.
.SS TILE_OPTIONS (\-tile)
.TP
.B file_i +xi+yi
Where: 'file_i' is the i'th tile (webp format) and 'xi','yi' specify the image
Where: 'file_i' is the i'th tile (WebP format) and 'xi','yi' specify the image
offset for this tile.
.SS FRAME_OPTIONS (\-frame)
.TP
.B file_i +xi+yi+di
Where: 'file_i' is the i'th frame (webp format), 'xi','yi' specify the image
Where: 'file_i' is the i'th frame (WebP format), 'xi','yi' specify the image
offset for this frame and 'di' is the pause duration before next frame.
.TP
.B \-loop n
@ -102,6 +113,10 @@ Input file in WebP format.
.TP
Output file in WebP format.
.SS Note:
.TP
The nature of EXIF, XMP and ICC data is not checked and is assumed to be valid.
.SH BUGS
Please report all bugs to our issue tracker:
http://code.google.com/p/webp/issues
@ -114,14 +129,29 @@ webpmux \-set icc image_profile.icc in.webp \-o icc_container.webp
.br
webpmux \-get icc icc_container.webp \-o image_profile.icc
.br
webpmux \-set meta image_metadata.meta in.webp \-o meta_container.webp
webpmux \-strip icc icc_container.webp \-o without_icc.webp
.br
webpmux \-get meta meta_container.webp \-o image_metadata.meta
webpmux \-set xmp image_metadata.xmp in.webp \-o xmp_container.webp
.br
webpmux \-get xmp xmp_container.webp \-o image_metadata.xmp
.br
webpmux \-strip xmp xmp_container.webp \-o without_xmp.webp
.br
webpmux \-set exif image_metadata.exif in.webp \-o exif_container.webp
.br
webpmux \-get exif exif_container.webp \-o image_metadata.exif
.br
webpmux \-strip exif exif_container.webp \-o without_exif.webp
.br
webpmux \-frame anim_1.webp +0+0+0 \-frame anim_2.webp +50+50+0 \-loop 10
\-o anim_container.webp
.br
webpmux \-get frame 2 anim_container.webp \-o frame_2.webp
.br
webpmux \-tile tile_1.webp +0+0 \-tile tile_2.webp +960+0 \-tile tile_3.webp
+0+576 \-tile tile_4.webp +960+576 \-o tile_container.webp
.br
webpmux \-get tile 2 tile_container.webp \-o tile_2.webp
.SH AUTHORS
\fBwebpmux\fP is written by the WebP team.