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/*
* Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
*
* 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, sub license, 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 (including the
* next paragraph) 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 NON-INFRINGEMENT.
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
*/
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/select.h>
#include <linux/media.h>
#include "media.h"
#include "utils.h"
int media_request_alloc(int media_fd)
{
struct media_request_alloc request_alloc;
int rc;
rc = ioctl(media_fd, MEDIA_IOC_REQUEST_ALLOC, &request_alloc);
if (rc < 0) {
request_log("Unable to allocate media request: %s\n",
strerror(errno));
return -1;
}
return request_alloc.fd;
}
int media_request_reinit(int request_fd)
{
int rc;
rc = ioctl(request_fd, MEDIA_REQUEST_IOC_REINIT, NULL);
if (rc < 0) {
request_log("Unable to reinit media request: %s\n",
strerror(errno));
return -1;
}
return 0;
}
int media_request_queue(int request_fd)
{
int rc;
rc = ioctl(request_fd, MEDIA_REQUEST_IOC_QUEUE, NULL);
if (rc < 0) {
request_log("Unable to queue media request: %s\n",
strerror(errno));
return -1;
}
return 0;
}
int media_request_wait_completion(int request_fd)
{
struct timeval tv = { 0, 300000 };
fd_set except_fds;
int rc;
FD_ZERO(&except_fds);
FD_SET(request_fd, &except_fds);
rc = select(request_fd + 1, NULL, NULL, &except_fds, &tv);
if (rc == 0) {
request_log("Timeout when waiting for media request\n");
return -1;
} else if (rc < 0) {
request_log("Unable to select media request: %s\n",
strerror(errno));
return -1;
}
return 0;
}
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