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/devices/fb/framebuffer_interface.h> 27 #include <l4/re/c/dataspace.h> 28 #include <l4/sys/types.h> 29 30 /* Server object to provide framebuffer data access. */ 31 32 class Framebuffer_server : public Framebuffer 33 { 34 private: 35 l4re_ds_t _mem; 36 37 protected: 38 /* Specialised methods for overriding. */ 39 40 virtual l4_size_t _get_framebuffer_size() = 0; 41 virtual void _get_view_info(l4re_video_view_info_t *view_info) = 0; 42 43 public: 44 /* Initialise the server with a capability referencing the exported memory. */ 45 46 explicit Framebuffer_server(l4re_ds_t mem) 47 : _mem(mem) 48 {} 49 50 /* Operation methods. */ 51 52 virtual long get_framebuffer(l4_cap_idx_t *mem); 53 virtual long get_framebuffer_size(l4_size_t *size); 54 virtual long get_view_info(l4re_video_view_info_t *view_info); 55 }; 56 57 #endif