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avoid exif rebuild when stripping jpg 

don't rebuild the exif data block if we don't need it

see https://github.com/libvips/libvips/issues/394
This commit is contained in:
John Cupitt 2020-07-18 14:07:21 +01:00
parent 63a549a3b2
commit a69c998ff0
1 changed files with 18 additions and 10 deletions
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28
libvips/foreign/vips2jpeg.c
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@ -235,8 +235,10 @@ write_new( VipsImage *in )
write->eman.fp = NULL;
write->inverted = NULL;
if( vips_copy( in, &write->in, NULL ) ||
vips__exif_update( write->in ) ) {
/* Make a copy of the input image since we may modify it with
* vips__exif_update() etc.
*/
if( vips_copy( in, &write->in, NULL ) ) {
write_destroy( write );
return( NULL );
}
@ -653,7 +655,11 @@ write_vips( Write *write, int qfac, const char *profile,
/* Write any APP markers we need.
*/
if( !strip ) {
if( write_exif( write ) ||
/* We need to rebuild the exif data block from any exif tags
* on the image.
*/
if( vips__exif_update( write->in ) ||
write_exif( write ) ||
write_xmp( write ) ||
write_blob( write,
VIPS_META_IPTC_NAME, JPEG_APP0 + 13 ) )
@ -662,13 +668,15 @@ write_vips( Write *write, int qfac, const char *profile,
/* A profile supplied as an argument overrides an embedded
* profile.
*/
if( profile &&
write_profile_file( write, profile ) )
return( -1 );
if( !profile &&
vips_image_get_typeof( in, VIPS_META_ICC_NAME ) &&
write_profile_meta( write ) )
return( -1 );
if( profile ) {
if( write_profile_file( write, profile ) )
return( -1 );
}
else {
if( vips_image_get_typeof( in, VIPS_META_ICC_NAME ) &&
write_profile_meta( write ) )
return( -1 );
}
}
/* Write data. Note that the write function grabs the longjmp()!