191 lines
4.7 KiB
C++
191 lines
4.7 KiB
C++
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012.
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This file is part of dispd.
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dispd is free software: you can redistribute it and/or modify it under the
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terms of the GNU Lesser General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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dispd is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
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details.
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You should have received a copy of the GNU Lesser General Public License
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along with dispd. If not, see <http://www.gnu.org/licenses/>.
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window.cpp
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Handles windows.
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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 <fcntl.h>
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#include <stddef.h>
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#include <stdint.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 "framebuffer.h"
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#include "session.h"
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#include "window.h"
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extern "C"
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struct dispd_window* dispd_create_window_game_vga(struct dispd_session* session)
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{
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if ( session->current_window )
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return NULL;
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if ( !session->is_vga )
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return NULL;
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size_t size = sizeof(struct dispd_window);
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struct dispd_window* window = (struct dispd_window*) malloc(size);
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if ( !window )
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return NULL;
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memset(window, 0, sizeof(*window));
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window->session = session;
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window->is_vga = true;
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return session->current_window = window;
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}
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extern "C"
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struct dispd_window* dispd_create_window_game_rgba(struct dispd_session* session)
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{
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if ( session->current_window )
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return NULL;
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if ( !session->is_rgba )
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return NULL;
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size_t size = sizeof(struct dispd_window);
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struct dispd_window* window = (struct dispd_window*) malloc(size);
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if ( !window )
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return NULL;
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memset(window, 0, sizeof(*window));
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window->session = session;
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window->is_rgba = true;
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return session->current_window = window;
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}
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extern "C" bool dispd_destroy_window(struct dispd_window* window)
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{
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free(window);
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return true;
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}
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static
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struct dispd_framebuffer* disp_begin_render_vga(struct dispd_window* window)
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{
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size_t size = sizeof(struct dispd_framebuffer);
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struct dispd_framebuffer* fb = (struct dispd_framebuffer*) malloc(size);
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if ( !fb )
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return NULL;
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memset(fb, 0, sizeof(*fb));
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fb->is_vga = true;
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fb->window = window;
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fb->width = 80;
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fb->height = 25;
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fb->bpp = 16;
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fb->pitch = fb->width * fb->bpp / 8;
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fb->datasize = fb->pitch * fb->height;
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fb->data = (uint8_t*) malloc(fb->datasize);
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if ( !fb->data ) { free(fb); return NULL; }
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return fb;
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}
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static
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struct dispd_framebuffer* disp_begin_render_rgba(struct dispd_window* window)
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{
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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 = window->session->device;
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msg.connector = window->session->connector;
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if ( dispmsg_issue(&msg, sizeof(msg)) != 0 )
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return NULL;
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size_t size = sizeof(struct dispd_framebuffer);
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struct dispd_framebuffer* fb = (struct dispd_framebuffer*) malloc(size);
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if ( !fb )
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return NULL;
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memset(fb, 0, sizeof(*fb));
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fb->window = window;
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fb->is_rgba = true;
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fb->width = msg.mode.view_xres;
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fb->height = msg.mode.view_yres;
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fb->bpp = 32;
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fb->pitch = fb->width * fb->bpp / 8;
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fb->datasize = fb->pitch * fb->height;
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fb->data = (uint8_t*) malloc(fb->datasize);
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if ( !fb->data ) { free(fb); return NULL; }
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return fb;
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}
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struct dispd_framebuffer* dispd_begin_render(struct dispd_window* window)
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{
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if ( window->is_vga )
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return disp_begin_render_vga(window);
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if ( window->is_rgba )
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return disp_begin_render_rgba(window);
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return NULL;
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}
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bool dispd_finish_render(struct dispd_framebuffer* fb)
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{
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struct dispd_window* window = fb->window;
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bool ret = false;
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if ( window->is_vga )
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{
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int fd = open("/dev/vga", O_WRONLY);
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if ( 0 <= fd )
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{
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if ( writeall(fd, fb->data, fb->datasize) == fb->datasize )
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ret = true;
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close(fd);
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}
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}
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else if ( window->is_rgba )
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{
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struct dispmsg_write_memory msg;
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msg.msgid = DISPMSG_WRITE_MEMORY;
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msg.device = window->session->device;
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msg.offset = 0;
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msg.size = fb->datasize;
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msg.src = fb->data;
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if ( dispmsg_issue(&msg, sizeof(msg)) == 0 )
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ret = true;
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}
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free(fb->data);
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free(fb);
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return ret;
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}
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uint8_t* dispd_get_framebuffer_data(struct dispd_framebuffer* fb)
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{
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return fb->data;
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}
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size_t dispd_get_framebuffer_pitch(struct dispd_framebuffer* fb)
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{
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return fb->pitch;
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}
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int dispd_get_framebuffer_format(struct dispd_framebuffer* fb)
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{
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return fb->is_vga ? 0 : fb->bpp;
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}
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int dispd_get_framebuffer_height(struct dispd_framebuffer* fb)
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{
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return fb->height;
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}
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int dispd_get_framebuffer_width(struct dispd_framebuffer* fb)
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{
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return fb->width;
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}
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