static int
png2vips_image( Read *read, VipsImage *out )
{
int interlace_type = png_get_interlace_type( read->pPng, read->pInfo );
VipsImage **t = (VipsImage **)
vips_object_local_array( VIPS_OBJECT( out ), 3 );
if( interlace_type != PNG_INTERLACE_NONE ) {
/* Arg awful interlaced image. We have to load to a huge mem
* buffer, then copy to out.
*/
t[0] = vips_image_new_buffer();
if( png2vips_header( read, t[0] ) ||
png2vips_interlace( read, t[0] ) ||
vips_image_write( t[0], out ) )
return( -1 );
}
else {
t[0] = vips_image_new();
if( png2vips_header( read, t[0] ) ||
vips_image_generate( t[0],
NULL, png2vips_generate, NULL,
read, NULL ) ||
vips_sequential( t[0], &t[1],
"tile_height", 8,
"access", read->readbehind ?
VIPS_ACCESS_SEQUENTIAL :
VIPS_ACCESS_SEQUENTIAL_UNBUFFERED,
NULL ) ||
vips_image_write( t[1], out ) )
return( -1 );
}
return( 0 );
}
int
vips__openslide_read_associated( const char *filename, VipsImage *out,
const char *associated )
{
ReadSlide *rslide;
VipsImage *raw;
const char *error;
VIPS_DEBUG_MSG( "vips__openslide_read_associated: %s %s\n",
filename, associated );
/* Memory buffer. Get associated directly to this, then copy to out.
*/
raw = vips_image_new_buffer();
vips_object_local( out, raw );
if( !(rslide = readslide_new( filename, raw, 0, associated )) ||
vips_image_write_prepare( raw ) )
return( -1 );
openslide_read_associated_image( rslide->osr, rslide->associated,
(uint32_t *) VIPS_IMAGE_ADDR( raw, 0, 0 ) );
error = openslide_get_error( rslide->osr );
if( error ) {
vips_error( "openslide2vips",
_( "reading associated image: %s" ), error );
return( -1 );
}
if( vips_image_write( raw, out ) )
return( -1 );
return( 0 );
}
static int
read_image( Read *read, VipsImage *out )
{
VipsImage **t = (VipsImage **)
vips_object_local_array( VIPS_OBJECT( out ), 3 );
guint64 length;
void *data;
int fd;
webp_decoder decoder;
/* libwebp makes streaming very hard. We have to read to a full memory
* buffer, then copy to out.
*
* mmap the input file, it's slightly quicker.
*/
t[0] = vips_image_new_buffer();
if( read_header( read, t[0] ) )
return( -1 );
if( vips_image_write_prepare( t[0] ) )
return( -1 );
if( !(fd = vips__open_image_read( read->filename )) )
return( -1 );
if( (length = vips_file_length( fd )) < 0 ) {
vips_tracked_close( fd );
return( -1 );
}
if( !(data = vips__mmap( fd, FALSE, length, 0 )) ) {
vips_tracked_close( fd );
return( -1 );
}
if( t[0]->Bands == 3 )
decoder = WebPDecodeRGBInto;
else
decoder = WebPDecodeRGBAInto;
if( !decoder( (uint8_t *) data, length,
VIPS_IMAGE_ADDR( t[0], 0, 0 ),
VIPS_IMAGE_SIZEOF_IMAGE( t[0] ),
VIPS_IMAGE_SIZEOF_LINE( t[0] ) ) ) {
vips__munmap( data, length );
vips_tracked_close( fd );
vips_error( "webp2vips", "%s", _( "unable to read pixels" ) );
return( -1 );
}
vips__munmap( data, length );
vips_tracked_close( fd );
if( vips_image_write( t[0], out ) )
return( -1 );
return( 0 );
}
