150 lines
3.8 KiB
C
150 lines
3.8 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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* window.c
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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 <ioleast.h>
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#include <stdbool.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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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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return session->current_window = window;
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}
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bool dispd_destroy_window(struct dispd_window* window)
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{
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free(window->cached_buffer);
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free(window);
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return true;
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}
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static uint8_t* request_buffer(struct dispd_window* window, size_t size)
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{
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if ( window->cached_buffer )
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{
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if ( window->cached_buffer_size == size )
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{
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uint8_t* ret = window->cached_buffer;
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window->cached_buffer = NULL;
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window->cached_buffer_size = 0;
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return ret;
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}
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free(window->cached_buffer);
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window->cached_buffer = NULL;
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window->cached_buffer_size = 0;
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}
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return (uint8_t*) malloc(size);
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}
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static void return_buffer(struct dispd_window* window, uint8_t* b, size_t size)
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{
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free(window->cached_buffer);
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window->cached_buffer = b;
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window->cached_buffer_size = size;
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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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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->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*) request_buffer(window, 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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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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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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return_buffer(window, fb->data, fb->datasize);
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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->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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