medical image analysis ocltools

# This file is part of fluid3d - a software for image registration
#
# Copyright (c) Madrid 2013 Gert Wollny
#
# fluid3d is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with fluid3d; if not, see <http://www.gnu.org/licenses/>.
#
#

import pyopencl as cl 


class CLDevice:
    
    def __init__(self, device):
        self.context = cl.Context([device])
        self.queue = cl.CommandQueue(self.context)
        self.device = device

    def read_cl_program(self, source_file):
        f = open(source_file, 'r') 
        text = f.read()
        return cl.Program(self.context, text).build()

    def get_ro_buffer(self, size, init=None):
        flags = cl.mem_flags.READ_ONLY
        if init is not None:
            flags |= cl.mem_flags.COPY_HOST_PTR
        return cl.Buffer(self.context, flags, size, init)

    def get_rw_buffer(self, size, init=None):
        flags = cl.mem_flags.READ_WRITE
        if init is not None:
            flags |= cl.mem_flags.COPY_HOST_PTR

        return cl.Buffer(self.context, flags, size, init)