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/*
* Copyright (c) 2023-2025 Ian Marco Moffett and the Osmora Team.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Hyra nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/errno.h>
#include <stdio.h>
#include <libgfx/gfx.h>
#include <liboda/oda.h>
#include <liboda/odavar.h>
#define oda_log(fmt, ...) printf("oda: " fmt, ##__VA_ARGS__)
/*
* Initialize the OSMORA Display Architecture
* (ODA) library.
*
* @res: Initialized ODA state result
*
* Returns 0 on success, otherwise a less than
* zero value.
*/
int
oda_init(struct oda_state *res)
{
int error;
/* Ensure the argument is valid */
if (res == NULL) {
return -EINVAL;
}
/*
* If this state has already been initialized,
* assume programmer error / undefined behaviour
* and let them know.
*/
if (oda_cookie_verify(res) == 0) {
oda_log("oda_init: 'res' already initialized\n");
return -EBUSY;
}
/* Initialize the graphics context */
error = gfx_init(&res->gctx);
if (error != 0) {
oda_log("oda_init: could not init graphics context\n");
return error;
}
TAILQ_INIT(&res->winq);
res->cookie = ODA_COOKIE;
return 0;
}
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