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_memory();
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 );
}
/* Read a cinfo to a VIPS image.
*/
static int
read_jpeg_image( ReadJpeg *jpeg, VipsImage *out )
{
struct jpeg_decompress_struct *cinfo = &jpeg->cinfo;
VipsImage **t = (VipsImage **)
vips_object_local_array( VIPS_OBJECT( out ), 3 );
VipsImage *im;
/* Here for longjmp() from vips__new_error_exit().
*/
if( setjmp( jpeg->eman.jmp ) )
return( -1 );
t[0] = vips_image_new();
if( read_jpeg_header( jpeg, t[0] ) )
return( -1 );
jpeg_start_decompress( cinfo );
#ifdef DEBUG
printf( "read_jpeg_image: starting decompress\n" );
#endif /*DEBUG*/
if( vips_image_generate( t[0],
NULL, read_jpeg_generate, NULL,
jpeg, NULL ) ||
vips_sequential( t[0], &t[1],
"tile_height", 8,
"access", jpeg->readbehind ?
VIPS_ACCESS_SEQUENTIAL :
VIPS_ACCESS_SEQUENTIAL_UNBUFFERED,
NULL ) )
return( -1 );
im = t[1];
if( jpeg->autorotate )
im = read_jpeg_rotate( VIPS_OBJECT( out ), im );
if( vips_image_write( im, out ) )
return( -1 );
return( 0 );
}
/* Read a cinfo to a VIPS image.
*/
static int
read_jpeg_image( ReadJpeg *jpeg, VipsImage *out )
{
struct jpeg_decompress_struct *cinfo = &jpeg->cinfo;
VipsImage **t = (VipsImage **)
vips_object_local_array( VIPS_OBJECT( out ), 3 );
/* Here for longjmp() from vips__new_error_exit().
*/
if( setjmp( jpeg->eman.jmp ) )
return( -1 );
t[0] = vips_image_new();
if( read_jpeg_header( jpeg, t[0] ) )
return( -1 );
/* Set decompressing to make readjpeg_free() call
* jpeg_stop_decompress().
*/
jpeg_start_decompress( cinfo );
jpeg->decompressing = TRUE;
#ifdef DEBUG
printf( "read_jpeg_image: starting decompress\n" );
#endif /*DEBUG*/
if( vips_image_generate( t[0],
NULL, read_jpeg_generate, NULL,
jpeg, NULL ) ||
vips_sequential( t[0], &t[1],
"tile_height", 8,
NULL ) ||
vips_image_write( t[1], out ) )
return( -1 );
return( 0 );
}
