+++ /dev/null
-/*
- * test_console - Test Console
- *
- * Copyright (c) 2011 David Herrmann <dh.herrmann@googlemail.com>
- * Copyright (c) 2011 University of Tuebingen
- *
- * Permission is hereby granted, free of charge, to any person obtaining
- * a copy of this software and associated documentation files
- * (the "Software"), to deal in the Software without restriction, including
- * without limitation the rights to use, copy, modify, merge, publish,
- * distribute, sublicense, and/or sell copies of the Software, and to
- * permit persons to whom the Software is furnished to do so, subject to
- * the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
- * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
- * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
- * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-/*
- * Test Console
- * This prints a console onto all available outputs. The console is not
- * interactive, but instead all input from stdin is read and printed as
- * printable characters onto the console.
- * This is no terminal emulation but instead an example how to print text with
- * the console subsystem.
- *
- * This prints all text from stdin to all connected outputs:
- * $ ./test_console
- *
- * This prints the text from the command "ls -la" to all outptus:
- * $ ls -la | ./test_console
- */
-
-#include <errno.h>
-#include <inttypes.h>
-#include <locale.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "console.h"
-#include "eloop.h"
-#include "font.h"
-#include "log.h"
-#include "unicode.h"
-#include "uterm.h"
-#include "vt.h"
-
-static volatile sig_atomic_t terminate;
-
-struct console {
- struct ev_eloop *loop;
- struct ev_signal *sig_term;
- struct ev_signal *sig_int;
- struct ev_fd *stdin_fd;
- struct kmscon_symbol_table *st;
- struct kmscon_font_factory *ff;
- struct gl_shader *shader;
- struct uterm_video *video;
- struct kmscon_vt *vt;
- struct kmscon_console *con;
- struct ev_idle *idle;
-
- uint32_t max_x;
- uint32_t max_y;
-};
-
-static void stdin_cb(struct ev_fd *fd, int mask, void *data)
-{
- struct console *con = data;
- char buf[512];
- int ret;
- unsigned int i, len;
- kmscon_symbol_t ch;
-
- if (!con || !fd)
- return;
-
- ret = read(0, buf, sizeof(buf));
- if (ret < 0) {
- log_info("stdin read error: %d\n", errno);
- } else if (!ret) {
- log_info("stdin closed\n");
- ev_eloop_rm_fd(fd);
- con->stdin_fd = NULL;
- } else {
- len = ret;
- log_debug("stdin input read (len: %d)\n", len);
-
- for (i = 0; i < len; ++i) {
- if (buf[i] == '\n') {
- kmscon_console_newline(con->con);
- } else {
- ch = buf[i];
- kmscon_console_write(con->con, ch);
- }
- }
- }
-}
-
-static void map_outputs(struct console *con)
-{
- int ret;
- struct uterm_display *iter;
- struct uterm_screen *screen;
-
- if (!uterm_video_is_awake(con->video))
- return;
-
- iter = uterm_video_get_displays(con->video);
- for ( ; iter; iter = uterm_display_next(iter)) {
- if (uterm_display_get_state(iter) != UTERM_DISPLAY_ACTIVE)
- continue;
-
- /* We create a screen on every draw here to avoid keeping a
- * global list of displays/screens. This is ugly but works.
- */
- ret = uterm_screen_new_single(&screen, iter);
- if (ret)
- continue;
-
- ret = uterm_screen_use(screen);
- if (ret) {
- uterm_screen_unref(screen);
- continue;
- }
-
- gl_viewport(screen);
- kmscon_console_map(con->con, con->shader);
-
- uterm_screen_swap(screen);
- uterm_screen_unref(screen);
- }
-}
-
-static void draw(struct ev_idle *idle, void *data)
-{
- struct console *con = data;
-
- ev_eloop_rm_idle(idle);
- map_outputs(con);
-}
-
-static void schedule_draw(struct console *con)
-{
- int ret;
-
- ret = ev_eloop_add_idle(con->loop, con->idle, draw, con);
- if (ret && ret != -EALREADY)
- log_warn("Cannot schedule draw function\n");
-}
-
-static void activate_outputs(struct console *con)
-{
- struct uterm_display *iter;
- struct uterm_mode *mode;
- int ret;
- uint32_t y;
-
- con->max_y = 0;
-
- iter = uterm_video_get_displays(con->video);
- for ( ; iter; iter = uterm_display_next(iter)) {
- if (uterm_display_get_state(iter) == UTERM_DISPLAY_INACTIVE) {
- ret = uterm_display_activate(iter, NULL);
- if (ret)
- continue;
- }
-
- mode = uterm_display_get_current(iter);
- y = uterm_mode_get_height(mode);
- if (y > con->max_y)
- con->max_y = y;
- }
-
- kmscon_console_resize(con->con, 0, 0, con->max_y);
- schedule_draw(con);
-}
-
-static void sig_term(struct ev_signal *sig, int signum, void *data)
-{
- terminate = 1;
-}
-
-static bool vt_switch(struct kmscon_vt *vt,
- enum kmscon_vt_action action,
- void *data)
-{
- struct console *con = data;
- int ret;
-
- if (action == KMSCON_VT_ENTER) {
- ret = uterm_video_wake_up(con->video);
- if (!ret)
- activate_outputs(con);
- } else {
- uterm_video_sleep(con->video);
- }
-
- return true;
-}
-
-static const char help_text[] =
-"test_console - KMS based console test\n"
-"This application can be used to test the console subsystem. It copies stdin "
-"to the console so you can use it to print arbitrary text like this:\n"
-" ls -la / | sudo ./test_console\n"
-"Please be aware that the application needs root rights to access the VT. "
-"If no VT support is compiled in you can run it without root rights but you "
-"should not start it from inside X!\n\n";
-
-static void print_help(struct console *con)
-{
- unsigned int i, len;
- kmscon_symbol_t ch;
-
- len = sizeof(help_text) - 1;
- for (i = 0; i < len; ++i) {
- if (help_text[i] == '\n') {
- kmscon_console_newline(con->con);
- } else {
- ch = help_text[i];
- kmscon_console_write(con->con, ch);
- }
- }
-}
-
-static void destroy_eloop(struct console *con)
-{
- ev_eloop_rm_idle(con->idle);
- ev_idle_unref(con->idle);
- kmscon_console_unref(con->con);
- gl_shader_unref(con->shader);
- uterm_video_unref(con->video);
- kmscon_vt_unref(con->vt);
- kmscon_font_factory_unref(con->ff);
- kmscon_symbol_table_unref(con->st);
- ev_eloop_rm_fd(con->stdin_fd);
- ev_eloop_rm_signal(con->sig_int);
- ev_eloop_rm_signal(con->sig_term);
- ev_eloop_unref(con->loop);
-}
-
-static int setup_eloop(struct console *con)
-{
- int ret;
-
- ret = ev_eloop_new(&con->loop);
- if (ret)
- return ret;
-
- ret = ev_eloop_new_signal(con->loop, &con->sig_term, SIGTERM,
- sig_term, NULL);
- if (ret)
- goto err_loop;
-
- ret = ev_eloop_new_signal(con->loop, &con->sig_int, SIGINT,
- sig_term, NULL);
- if (ret)
- goto err_loop;
-
- ret = ev_eloop_new_fd(con->loop, &con->stdin_fd, 0,
- EV_READABLE, stdin_cb, con);
- if (ret)
- goto err_loop;
-
- ret = kmscon_symbol_table_new(&con->st);
- if (ret)
- goto err_loop;
-
- ret = uterm_video_new(&con->video, UTERM_VIDEO_DRM, con->loop);
- if (ret)
- goto err_loop;
-
- ret = gl_shader_new(&con->shader);
- if (ret)
- goto err_loop;
-
- ret = kmscon_font_factory_new(&con->ff, con->st);
- if (ret)
- goto err_loop;
-
- ret = kmscon_vt_new(&con->vt, vt_switch, con);
- if (ret)
- goto err_loop;
-
- ret = kmscon_vt_open(con->vt, KMSCON_VT_NEW, con->loop);
- if (ret)
- goto err_loop;
-
- ret = kmscon_console_new(&con->con, con->ff);
- if (ret)
- goto err_loop;
-
- ret = ev_idle_new(&con->idle);
- if (ret)
- goto err_loop;
-
- print_help(con);
- return 0;
-
-err_loop:
- destroy_eloop(con);
- return ret;
-}
-
-int main(int argc, char **argv)
-{
- struct console con;
- int ret;
-
- setlocale(LC_ALL, "");
- memset(&con, 0, sizeof(con));
-
- ret = setup_eloop(&con);
- if (ret) {
- log_err("Cannot setup eloop\n");
- return abs(ret);
- }
-
- log_info("Starting console\n");
-
- schedule_draw(&con);
-
- while (!terminate) {
- ret = ev_eloop_dispatch(con.loop, -1);
- if (ret)
- break;
- }
-
- log_info("Stopping console\n");
-
- destroy_eloop(&con);
- return abs(ret);
-}
projects / platform / upstream / kmscon.git / commitdiff