/* Make a new buffer. */ VipsBuffer * vips_buffer_new( VipsImage *im, VipsRect *area ) { VipsBuffer *buffer; buffer = g_new( VipsBuffer, 1 ); buffer->ref_count = 1; buffer->im = im; buffer->area = *area; buffer->done = FALSE; buffer->cache = NULL; buffer->bsize = (size_t) VIPS_IMAGE_SIZEOF_PEL( im ) * area->width * area->height; if( !(buffer->buf = vips_tracked_malloc( buffer->bsize )) ) { vips_buffer_unref( buffer ); return( NULL ); } #ifdef DEBUG printf( "** vips_buffer_new: left = %d, top = %d, " "width = %d, height = %d (%p)\n", buffer->area.left, buffer->area.top, buffer->area.width, buffer->area.height, buffer ); #endif /*DEBUG*/ #ifdef DEBUG g_mutex_lock( vips__global_lock ); vips__buffers_all = g_slist_prepend( vips__buffers_all, buffer ); printf( "%d buffers in vips\n", g_slist_length( vips__buffers_all ) ); g_mutex_unlock( vips__global_lock ); #endif /*DEBUG*/ return( buffer ); }
static int buffer_move( VipsBuffer *buffer, VipsRect *area ) { VipsImage *im = buffer->im; size_t new_bsize; g_assert( buffer->ref_count == 1 ); vips_buffer_undone( buffer ); g_assert( !buffer->done ); buffer->area = *area; new_bsize = (size_t) VIPS_IMAGE_SIZEOF_PEL( im ) * area->width * area->height; if( buffer->bsize < new_bsize || !buffer->buf ) { buffer->bsize = new_bsize; VIPS_FREEF( vips_tracked_free, buffer->buf ); if( !(buffer->buf = vips_tracked_malloc( buffer->bsize )) ) return( -1 ); } return( 0 ); }