Landfall

Annotated pkg/devices/fb/src/server/fb-server.cc

0:89a1bc19c1fc
2018-05-13 Paul Boddie Added device libraries and programs, configuration files and examples. Also added an installation script and copyright and licensing information.
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/*
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 * Common framebuffer server functionality.
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 *
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 * (c) 2018 Paul Boddie <paul@boddie.org.uk>
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License as
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 * published by the Free Software Foundation; either version 2 of
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 * the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor,
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 * Boston, MA  02110-1301, USA
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 */
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#include "fb-client.h"
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#include "fb-server.h"
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#include "fb-ops.h"
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#include <l4/cxx/ipc_server>
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#include <l4/re/env>
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#include <l4/sys/typeinfo_svr>
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#include <l4/util/util.h>
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#include <stdint.h>
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/* Handle invocations. */
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int
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Framebuffer_server::dispatch(l4_umword_t obj, L4::Ipc::Iostream &ios)
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{
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  l4_msgtag_t tag;
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  (void) obj;
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  ios >> tag;
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  switch (tag.label())
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  {
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    case L4::Meta::Protocol:
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      return L4::Util::handle_meta_request<Framebuffer_device_interface>(ios);
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    case Framebuffer_op_get_framebuffer:
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      ios << _mem;
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      return L4_EOK;
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    case Framebuffer_op_get_framebuffer_size:
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      ios << get_framebuffer_size();
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      return L4_EOK;
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    case Framebuffer_op_get_view_info:
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      l4re_video_view_info_t view_info;
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      get_view_info(&view_info);
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      /* Serialise the view information structure. */
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      ios << L4::Ipc::buf_cp_out<uint8_t>((uint8_t *) &view_info, sizeof(view_info));
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      return L4_EOK;
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    default:
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      return -L4_EBADPROTO;
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  }
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}