Maxime Ripard
5aeb07f8bf
The coding style has been a bit erratic. Enforce the linux kernel coding style by reusing their .clang-format file, running clang-format on the source, and ignoring the few shortcomings that clang-format has at the moment (especially on aligning the define values). Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
/*
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* Copyright (C) 2018 Paul Kocialkowski <paul.kocialkowski@bootlin.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/select.h>
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#include <linux/media.h>
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#include "media.h"
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#include "utils.h"
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int media_request_alloc(int media_fd)
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{
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struct media_request_alloc request_alloc;
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int rc;
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rc = ioctl(media_fd, MEDIA_IOC_REQUEST_ALLOC, &request_alloc);
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if (rc < 0) {
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sunxi_cedrus_log("Unable to allocate media request: %s\n",
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strerror(errno));
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return -1;
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}
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return request_alloc.fd;
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}
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int media_request_reinit(int request_fd)
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{
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int rc;
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rc = ioctl(request_fd, MEDIA_REQUEST_IOC_REINIT, NULL);
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if (rc < 0) {
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sunxi_cedrus_log("Unable to reinit media request: %s\n",
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strerror(errno));
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return -1;
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}
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return 0;
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}
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int media_request_queue(int request_fd)
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{
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int rc;
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rc = ioctl(request_fd, MEDIA_REQUEST_IOC_QUEUE, NULL);
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if (rc < 0) {
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sunxi_cedrus_log("Unable to queue media request: %s\n",
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strerror(errno));
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return -1;
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}
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return 0;
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}
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int media_request_wait_completion(int request_fd)
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{
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struct timeval tv = { 0, 300000 };
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fd_set except_fds;
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int rc;
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FD_ZERO(&except_fds);
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FD_SET(request_fd, &except_fds);
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rc = select(request_fd + 1, NULL, NULL, &except_fds, &tv);
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if (rc == 0) {
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sunxi_cedrus_log("Timeout when waiting for media request\n");
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return -1;
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} else if (rc < 0) {
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sunxi_cedrus_log("Unable to select media request: %s\n",
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strerror(errno));
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return -1;
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}
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return 0;
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}
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