void
VImage::write_to_buffer( const char *suffix, void **buf, size_t *size,
VOption *options )
{
char filename[VIPS_PATH_MAX];
char option_string[VIPS_PATH_MAX];
const char *operation_name;
VipsBlob *blob;
vips__filename_split8( suffix, filename, option_string );
if( !(operation_name = vips_foreign_find_save_buffer( filename )) ) {
delete options;
throw VError();
}
call_option_string( operation_name, option_string,
(options ? options : VImage::option())->
set( "in", *this )->
set( "buffer", &blob ) );
if( blob ) {
if( buf ) {
*buf = VIPS_AREA( blob )->data;
VIPS_AREA( blob )->free_fn = NULL;
}
if( size )
*size = VIPS_AREA( blob )->length;
vips_area_unref( VIPS_AREA( blob ) );
}
}
VImage
VImage::new_from_buffer( void *buf, size_t len, const char *option_string,
VOption *options )
{
const char *operation_name;
VipsBlob *blob;
VImage out;
if( !(operation_name = vips_foreign_find_load_buffer( buf, len )) ) {
delete options;
throw( VError() );
}
/* We don't take a copy of the data or free it.
*/
blob = vips_blob_new( NULL, buf, len );
options = (options ? options : VImage::option())->
set( "buffer", blob )->
set( "out", &out );
vips_area_unref( VIPS_AREA( blob ) );
call_option_string( operation_name, option_string, options );
return( out );
}
static int
vips_draw_rect_build( VipsObject *object )
{
VipsDraw *draw = VIPS_DRAW( object );
VipsDrawink *drawink = VIPS_DRAWINK( object );
VipsArea *ink = VIPS_AREA( drawink->ink );
VipsDrawRect *draw_rect = (VipsDrawRect *) object;
int left = draw_rect->left;
int top = draw_rect->top;
int width = draw_rect->width;
int height = draw_rect->height;
VipsRect image;
VipsRect rect;
VipsRect clip;
if( VIPS_OBJECT_CLASS( vips_draw_rect_parent_class )->build( object ) )
return( -1 );
/* Also use a solid fill for very narrow unfilled rects.
*/
if( !draw_rect->fill &&
width > 2 &&
height > 2 )
return( vips_draw_rect( draw->image,
ink->data, ink->n,
left, top, width, 1, NULL ) ||
vips_draw_rect( draw->image,
ink->data, ink->n,
left + width - 1, top, 1, height, NULL ) ||
vips_draw_rect( draw->image,
ink->data, ink->n,
left, top + height - 1, width, 1, NULL ) ||
vips_draw_rect( draw->image,
ink->data, ink->n,
left, top, 1, height, NULL ) );
image.left = 0;
image.top = 0;
image.width = draw->image->Xsize;
image.height = draw->image->Ysize;
rect.left = left;
rect.top = top;
rect.width = width;
rect.height = height;
vips_rect_intersectrect( &rect, &image, &clip );
if( !vips_rect_isempty( &clip ) ) {
VipsPel *to =
VIPS_IMAGE_ADDR( draw->image, clip.left, clip.top );
VipsPel *q;
int x, y;
/* We plot the first line pointwise, then memcpy() it for the
* subsequent lines.
*/
q = to;
for( x = 0; x < clip.width; x++ ) {
vips__drawink_pel( drawink, q );
q += draw->psize;
}
q = to + draw->lsize;
for( y = 1; y < clip.height; y++ ) {
memcpy( q, to, clip.width * draw->psize );
q += draw->lsize;
}
}
return( 0 );
}