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/*
* mfc codec encoding example application
* Andrzej Hajda <a.hajda@samsung.com>
*
* Command line helper functions.
*
* Copyright 2012 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/videodev2.h>
#include <stddef.h>
#include "common.h"
#include "args.h"
void print_usage(char const *name)
{
printf("Usage: %s [args]\n"
"\t-i <device> - FIMC camera device (e.g. /dev/video1)\n"
"\t If not specified demo input device is used\n"
"\t-m <device> - (required) MFC device (e.g. /dev/video8)\n"
"\t-o <file> - Output file name\n"
"\t-c <codec> - The codec of the encoded stream\n"
"\t Available codecs: mpeg4, h263, h264\n"
"\t-d <duration> - Number of frames to encode\n"
"\t-r <rate> - Frame rate\n"
"\t-b <bitrate> - Bitrate\n"
"\t-s <size> - Size of frame in format WxH\n"
, name);
}
int get_codec(char *str)
{
if (strncasecmp("mpeg4", str, 5) == 0)
return V4L2_PIX_FMT_MPEG4;
else if (strncasecmp("h263", str, 5) == 0)
return V4L2_PIX_FMT_H263;
else if (strncasecmp("h264", str, 5) == 0)
return V4L2_PIX_FMT_H264;
return 0;
}
void set_options_default(struct options *o)
{
memset(o, 0, sizeof(*o));
o->width = 176;
o->height = 144;
o->duration = 250;
o->rate = 25;
o->out_name = "demo.out";
o->codec = V4L2_PIX_FMT_H264;
o->bitrate = 1000;
}
int parse_args(struct options *opts, int argc, char **argv)
{
int c;
set_options_default(opts);
while ((c = getopt(argc, argv, "i:m:o:c:d:r:s:b:")) != -1) {
switch (c) {
case 'i':
opts->in_name = optarg;
break;
case 'm':
opts->mfc_name = optarg;
break;
case 'o':
opts->out_name = optarg;
break;
case 'c':
opts->codec = get_codec(optarg);
if (opts->codec == 0) {
err("Unknown codec");
return -1;
}
break;
case 'd':
opts->duration = atoi(optarg);
break;
case 'r':
opts->rate = atoi(optarg);
break;
case 's': {
char *sep = NULL;
opts->width = strtol(optarg, &sep, 10);
if (!sep || *sep != 'x') {
err("Bad size, should be like 320x200");
return -1;
}
opts->height = atoi(++sep);
break;
case 'b':
opts->bitrate = atoi(optarg);
break;
}
default:
return -1;
}
}
if (opts->mfc_name == NULL) {
err("Please provide MFC device");
return -1;
}
return 0;
}
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