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bug#51296: [PATCH] Add WebP format support
From: |
Eli Zaretskii |
Subject: |
bug#51296: [PATCH] Add WebP format support |
Date: |
Thu, 21 Oct 2021 11:19:44 +0300 |
> From: Stefan Kangas <stefan@marxist.se>
> Date: Wed, 20 Oct 2021 17:45:28 -0700
> Cc: 51296@debbugs.gnu.org
>
> > Also fixed.
>
> I spotted a typo, fixed in the attached patch.
Thanks, now only a few minor issues remain:
> +### mingw32 doesn't use -lwebp, since it loads the library dynamically.
> +HAVE_WEBP=no
> +if test "${with_webp}" != "no"; then
> + if test "$opsys" = mingw32; then
> + AC_CHECK_HEADER([webp/decode.h], [HAVE_WEBP=yes])
> + elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes" \
> + || test "${HAVE_NS}" = "yes"; then
> + WEBP_REQUIRED=0.6.0
> + WEBP_MODULE="libwebp >= $WEBP_REQUIRED"
> +
> + EMACS_CHECK_MODULES([WEBP], [$WEBP_MODULE])
> + AC_SUBST(WEBP_CFLAGS)
> + AC_SUBST(WEBP_LIBS)
> +
> + if test $HAVE_WEBP = yes; then
> + AC_DEFINE(HAVE_WEBP, 1, [Define to 1 if using libwebp.])
> + CFLAGS="$CFLAGS $WEBP_CFLAGS"
> + fi
> + fi
> +fi
That's OK, but I believe you should also add WEBP to the list of Emacs
configuration features around line 5885 in configure.ac, so that WebP
support could be reported by system-configuration-features.
> +DEF_DLL_FN (int, WebPGetInfo, (const uint8_t* data, size_t data_size, int*
> width, int* height));
Our style is to separate the '*' from the type, like this:
DEF_DLL_FN (int, WebPGetInfo, (const uint8_t *, size_t, int *, int *));
^^ ^^ ^^
Also note that there's no need to use names of parameters in
prototypes, they just make the code longer, but don't add anything
useful. So I removed them in the above.
> +static bool
> +init_webp_functions (void)
> +{
> + HMODULE library;
> +
> + if (!(library = w32_delayed_load (Qwebp)))
> + return 0;
^^^^^^^^
"return false" is more consistent.
> + contents = (uint8_t*) SSDATA (specified_data);
Space before '*' again. Also, is the type cast really needed? If
not, it is better to drop it.
> + /* Validate the WebP image header. */
> + if (!WebPGetInfo (contents, size, NULL, NULL))
> + {
> + if (!NILP (specified_data))
> + image_error ("Not a WebP file: `%s'", file);
> + else
> + image_error ("Invalid WebP data");
This last error message could IMO be more useful, if it said something
like "Non-WebP header in WebP image data".
> + image_error ("Error when interpreting WebP data: `%s'", file);
Suggest to say "Error when interpreting WebP data from file `%s'"
instead, otherwise it may not be clear to the user what is that string
after the colon.
> + image_error ("Error when interpreting WebP data");
I'd suggest "Error when interpreting WebP image data".
- bug#51296: [PATCH] Add WebP format support, (continued)
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/20
- bug#51296: [PATCH] Add WebP format support, Eli Zaretskii, 2021/10/20
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/20
- bug#51296: [PATCH] Add WebP format support, Eli Zaretskii, 2021/10/20
- bug#51296: [PATCH] Add WebP format support, Eli Zaretskii, 2021/10/20
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/20
- bug#51296: [PATCH] Add WebP format support, Eli Zaretskii, 2021/10/20
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/20
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/20
- bug#51296: [PATCH] Add WebP format support,
Eli Zaretskii <=
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/21
- bug#51296: [PATCH] Add WebP format support, Eli Zaretskii, 2021/10/21
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/21
- bug#51296: [PATCH] Add WebP format support, Eli Zaretskii, 2021/10/22
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/22
- bug#51296: [PATCH] Add WebP format support, Eli Zaretskii, 2021/10/22
- bug#51296: [PATCH] Add WebP format support, Eli Zaretskii, 2021/10/22
- bug#51296: [PATCH] Add WebP format support, Stefan Kangas, 2021/10/22