more webp doc improvements
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TODO
2
TODO
@ -1,5 +1,3 @@
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- add "*" before each optional arg description
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- I like the new int mask creator in reducev, can we use it in im_vips2imask()
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as well?
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@ -2466,18 +2466,19 @@ vips_webpload_buffer( void *buf, size_t len, VipsImage **out, ... )
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*
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* Write an image to a file in WebP format.
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*
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* Use @Q to set the WebP quality factor. It has the range 0 - 100, with the
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* By default, images are saved in lossy format, with
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* @Q giving the WebP quality factor. It has the range 0 - 100, with the
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* default 75.
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*
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* Use @preset to hint the image type to lossy compressor. The default is
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* Use @preset to hint the image type to the lossy compressor. The default is
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* #VIPS_FOREIGN_WEBP_PRESET_DEFAULT.
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*
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* Set @smart_subsample to enable high quality chroma subsampling.
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*
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* Use @alpha_q to set the quality for the alpha channel in lossy mode. It has
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* the range 1 - 100, with the default 100.
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*
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* Set @lossless to enable lossless save.
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* Set @lossless to use lossless compression, or combine @near_lossless
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* with @Q 80, 60, 40 or 20 to apply increasing amounts of preprocessing
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* which improves the near-lossless compression ratio by up to 50%.
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*
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* See also: vips_webpload(), vips_image_write_to_file().
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*
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