2b72262b4f
I hereby relicense all my work on Sortix under the ISC license as below. All Sortix contributions by other people are already under this license, are not substantial enough to be copyrightable, or have been removed. All imported code from other projects is compatible with this license. All GPL licensed code from other projects had previously been removed. Copyright 2011-2016 Jonas 'Sortie' Termansen and contributors. Permission to use, copy, modify, and distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
122 lines
3.4 KiB
C
122 lines
3.4 KiB
C
/*
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* Copyright (c) 2012 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* session.c
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* Handles session management.
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*/
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#include <sys/types.h>
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#include <sys/display.h>
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#include <sys/wait.h>
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#include <error.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <dispd.h>
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#include "session.h"
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static const uint64_t ONE_AND_ONLY_DEVICE = 0;
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static const uint64_t ONE_AND_ONLY_CONNECTOR = 0;
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struct dispd_session* global_session = NULL;
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bool dispd__session_initialize(int* argc, char*** argv)
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{
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(void) argc;
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(void) argv;
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size_t size = sizeof(struct dispd_session);
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global_session = (struct dispd_session*) malloc(size);
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if ( !global_session )
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return false;
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memset(global_session, 0, sizeof(*global_session));
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global_session->device = ONE_AND_ONLY_DEVICE;
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global_session->connector = ONE_AND_ONLY_CONNECTOR;
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return true;
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}
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struct dispd_session* dispd_attach_default_session()
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{
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global_session->refcount++;
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return global_session;
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}
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bool dispd_detach_session(struct dispd_session* session)
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{
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session->refcount--;
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return true;
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}
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bool dispd_session_setup_game_rgba(struct dispd_session* session)
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{
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if ( session->is_rgba )
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return true;
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if ( session->current_window )
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return false;
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struct dispmsg_get_crtc_mode msg;
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msg.msgid = DISPMSG_GET_CRTC_MODE;
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msg.device = session->device;
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msg.connector = session->connector;
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if ( dispmsg_issue(&msg, sizeof(msg)) != 0 )
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return false;
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if ( !(msg.mode.control & 1) || msg.mode.fb_format != 32 )
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{
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pid_t childpid = fork();
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if ( childpid < 0 )
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return false;
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if ( childpid )
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{
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int status;
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waitpid(childpid, &status, 0);
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return session->is_rgba = (WIFEXITED(status) && !WEXITSTATUS(status));
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}
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const char* chvideomode = "chvideomode";
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#if 1
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// TODO chvideomode currently launches --bpp 32 as a program...
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execlp(chvideomode, chvideomode, NULL);
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#else
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execlp(chvideomode, chvideomode,
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"--bpp", "32",
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"--show-graphics", "true",
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"--show-text", "false",
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NULL);
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#endif
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perror(chvideomode);
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exit(127);
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}
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// HACK: The console may be rendered asynchronously and it might still be
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// rendering to the framebuffer, however this process is about to do
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// bitmapped graphics to the framebuffer as well. Since there is no
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// synchronization with the terminal except not writing to it, there
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// is a small window where both are fighting for the framebuffer.
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// We can resolve this issue by simply fsync()ing the terminal, which
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// causes the scheduled console rendering to finish before returning.
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int tty_fd = open("/dev/tty", O_WRONLY);
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if ( 0 <= tty_fd )
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{
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fsync(tty_fd);
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close(tty_fd);
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}
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return session->is_rgba = true;
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}
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