1 /* 2 * Common framebuffer server functionality. 3 * 4 * Copyright (C) 2018, 2023 Paul Boddie <paul@boddie.org.uk> 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA 20 */ 21 22 #pragma once 23 24 #ifdef __cplusplus 25 26 #include <l4/re/c/dataspace.h> 27 #include <l4/sys/types.h> 28 29 #include "framebuffer_interface.h" 30 31 /* Server object to provide framebuffer data access. */ 32 33 class Framebuffer_server : public Framebuffer 34 { 35 private: 36 l4re_ds_t _mem; 37 38 protected: 39 /* Specialised methods for overriding. */ 40 41 virtual l4_size_t _get_framebuffer_size() = 0; 42 virtual void _get_view_info(l4re_video_view_info_t *view_info) = 0; 43 44 public: 45 /* Initialise the server with a capability referencing the exported memory. */ 46 47 explicit Framebuffer_server(l4re_ds_t mem) 48 : _mem(mem) 49 {} 50 51 /* Operation methods. */ 52 53 virtual long get_framebuffer(l4_cap_idx_t *mem); 54 virtual long get_framebuffer_size(l4_size_t *size); 55 virtual long get_view_info(l4re_video_view_info_t *view_info); 56 }; 57 58 #endif