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fix jxl load rewind 

Looks like there's no way to reset the decoder state, so we have to
remake it.
This commit is contained in:
John Cupitt 2022-08-14 17:27:13 +01:00
parent 99e6bb833e
commit e88db2ceb4
2 changed files with 41 additions and 25 deletions
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1
ChangeLog
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@ -6,6 +6,7 @@
- better 0 detection in unpremultiply
- fix low bitdepth spng save [jeffska]
- fix PNG low bitdepth save of high bitdepth images
- add support for libjxl 0.7 [kleisauke]
21/11/21 started 8.13
- configure fails for requested but unmet dependencies [remicollet]

65
libvips/foreign/jxlload.c
View File

@ -158,21 +158,6 @@ vips_foreign_load_jxl_build( VipsObject *object )
jxl->runner = JxlThreadParallelRunnerCreate( NULL,
vips_concurrency_get() );
jxl->decoder = JxlDecoderCreate( NULL );
if( JxlDecoderSubscribeEvents( jxl->decoder,
JXL_DEC_COLOR_ENCODING |
JXL_DEC_BASIC_INFO |
JXL_DEC_FULL_IMAGE ) ) {
vips_foreign_load_jxl_error( jxl, "JxlDecoderSubscribeEvents" );
return( -1 );
}
if( JxlDecoderSetParallelRunner( jxl->decoder,
JxlThreadParallelRunner, jxl->runner ) ) {
vips_foreign_load_jxl_error( jxl,
"JxlDecoderSetParallelRunner" );
return( -1 );
}
if( VIPS_OBJECT_CLASS( vips_foreign_load_jxl_parent_class )->
build( object ) )
@ -378,10 +363,13 @@ vips_foreign_load_jxl_process( VipsForeignLoadJxl *jxl )
JXL_DEC_NEED_MORE_INPUT ) {
size_t bytes_remaining;
#ifdef DEBUG
printf( "vips_foreign_load_jxl_process: reading ...\n" );
#endif /*DEBUG*/
bytes_remaining = JxlDecoderReleaseInput( jxl->decoder );
if( vips_foreign_load_jxl_fill_input( jxl, bytes_remaining ) )
return( JXL_DEC_ERROR );
JxlDecoderSetInput( jxl->decoder,
jxl->input_buffer, jxl->bytes_in_buffer );
}
@ -505,10 +493,24 @@ vips_foreign_load_jxl_header( VipsForeignLoad *load )
printf( "vips_foreign_load_jxl_header:\n" );
#endif /*DEBUG*/
if( vips_source_rewind( jxl->source ) )
return( -1 );
/* Build the decoder we will use for the header.
*/
jxl->decoder = JxlDecoderCreate( NULL );
if( JxlDecoderSubscribeEvents( jxl->decoder,
JXL_DEC_COLOR_ENCODING |
JXL_DEC_BASIC_INFO ) ) {
vips_foreign_load_jxl_error( jxl, "JxlDecoderSubscribeEvents" );
return( -1 );
}
if( JxlDecoderSetParallelRunner( jxl->decoder,
JxlThreadParallelRunner, jxl->runner ) ) {
vips_foreign_load_jxl_error( jxl,
"JxlDecoderSetParallelRunner" );
return( -1 );
}
if( vips_foreign_load_jxl_fill_input( jxl, 0 ) )
if( vips_source_rewind( jxl->source ) ||
vips_foreign_load_jxl_fill_input( jxl, 0 ) )
return( -1 );
JxlDecoderSetInput( jxl->decoder,
jxl->input_buffer, jxl->bytes_in_buffer );
@ -618,13 +620,26 @@ vips_foreign_load_jxl_load( VipsForeignLoad *load )
if( vips_foreign_load_jxl_set_header( jxl, t[0] ) )
return( -1 );
/* We have to reset the reader ... we can't reply onb the read point
* being left just after the header.
*/
if( vips_source_rewind( jxl->source ) )
return( -1 );
/* We have to make a new decoder ... we can't be certain the header
* decoder left the input in the correct place.
*/
VIPS_FREEF( JxlDecoderDestroy, jxl->decoder );
if( vips_foreign_load_jxl_fill_input( jxl, 0 ) )
jxl->decoder = JxlDecoderCreate( NULL );
if( JxlDecoderSubscribeEvents( jxl->decoder,
JXL_DEC_FULL_IMAGE ) ) {
vips_foreign_load_jxl_error( jxl, "JxlDecoderSubscribeEvents" );
return( -1 );
}
if( JxlDecoderSetParallelRunner( jxl->decoder,
JxlThreadParallelRunner, jxl->runner ) ) {
vips_foreign_load_jxl_error( jxl,
"JxlDecoderSetParallelRunner" );
return( -1 );
}
if( vips_source_rewind( jxl->source ) ||
vips_foreign_load_jxl_fill_input( jxl, 0 ) )
return( -1 );
JxlDecoderSetInput( jxl->decoder,
jxl->input_buffer, jxl->bytes_in_buffer );