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fix heifload with libheif 1.6 

heif_avif wasn't added until libheif 1.7
This commit is contained in:
John Cupitt 2020-10-11 19:54:36 +01:00
parent 8d4852f217
commit 888b5654a0
2 changed files with 16 additions and 15 deletions
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15
configure.ac
View File

@ -888,16 +888,13 @@ if test x"$with_heif" = x"yes"; then
LIBS="$save_LIBS"
fi
# heif_main_brand added in 1.4.0
# heif_main_brand added in 1.4.0, but heif_avif appeared in 1.7 ... just check
# the libheif version number since testing for enums is annoying
if test x"$with_heif" = x"yes"; then
save_LIBS="$LIBS"
LIBS="$LIBS $HEIF_LIBS"
AC_CHECK_FUNCS(heif_main_brand,[
AC_DEFINE(HAVE_HEIF_MAIN_BRAND,1,
[define if you have heif_main_brand.])
],[]
)
LIBS="$save_LIBS"
PKG_CHECK_MODULES(HEIF_AVIF, libheif >= 1.7.0, [
AC_DEFINE(HAVE_HEIF_AVIF,1,[define if you have heif_avif.])
], [
])
fi
# heif_decoding_options.convert_hdr_to_8bit added in 1.7.0

16
libvips/foreign/heifload.c
View File

@ -567,20 +567,24 @@ vips_foreign_load_heif_set_header( VipsForeignLoadHeif *heif, VipsImage *out )
vips_image_set_int( out,
VIPS_META_PAGE_HEIGHT, heif->page_height );
/* Determine compression from HEIF "brand"
* Requires libheif 1.4.0+, prior versions were HEVC only
/* Determine compression from HEIF "brand". heif_avif and heif_avis
* were added in v1.7.
*/
compression = VIPS_FOREIGN_HEIF_COMPRESSION_HEVC;
#ifdef HAVE_HEIF_MAIN_BRAND
#ifdef HAVE_HEIF_AVIF
{
const unsigned char *brand_data;
if ( brand_data = vips_source_sniff( heif->source, 12 ) ) {
if( (brand_data = vips_source_sniff( heif->source, 12 )) ) {
enum heif_brand brand;
brand = heif_main_brand( brand_data, 12 );
if( brand == heif_avif || brand == heif_avis )
if( brand == heif_avif ||
brand == heif_avis )
compression = VIPS_FOREIGN_HEIF_COMPRESSION_AV1;
}
#endif /*HAVE_HEIF_MAIN_BRAND*/
}
#endif /*HAVE_HEIF_AVIF*/
vips_image_set_string( out, "heif-compression",
vips_enum_nick( VIPS_TYPE_FOREIGN_HEIF_COMPRESSION,