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#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <getopt.h>
#include <ufodecode.h>
static int read_raw_file(const char *filename, char **buffer, size_t *length)
{
FILE *fp = fopen(filename, "rb");
if (fp == NULL)
return ENOENT;
fseek(fp, 0, SEEK_END);
*length = ftell(fp);
rewind(fp);
*buffer = (char *) malloc(*length);
if (*buffer == NULL) {
fclose(fp);
return ENOMEM;
}
size_t buffer_length = fread(*buffer, 1, *length, fp);
fclose(fp);
if (buffer_length != *length) {
free(*buffer);
return ERANGE;
}
return 0;
}
static void usage(void)
{
printf("usage: ipedec [--num-rows=ROWS] [--clear-frame] FILE [FILE ...]\n\
Options:\n\
-h, --help Show this help message and exit\n\
-v, --verbose Print additional information on STDOUT\n\
-r, --num-rows=N N rows that are contained in the file\n\
-c, --clear-frame Clear the frame for each iteration\n");
}
static void process_file(const char *filename, int rows, int clear_frame, int verbose)
{
char *buffer = NULL;
size_t num_bytes = 0;
int err = 0;
uint16_t *pixels = (uint16_t *) malloc(2048 * 1088 * sizeof(uint16_t));
uint32_t num_rows, frame_number, time_stamp, old_time_stamp = 0;
int num_frames = 0;
struct timeval start, end;
long seconds = 0L, useconds = 0L;
int error = read_raw_file(filename, &buffer, &num_bytes);
if (error) {
fprintf(stderr, "Error reading %s: %s\n", filename, strerror(error));
return;
}
ufo_decoder decoder = ufo_decoder_new(rows, 2048, (uint32_t *) buffer, num_bytes);
if (!decoder) {
fprintf(stderr, "Failed to initialize decoder\n");
return;
}
char output_name[256];
snprintf(output_name, 256, "%s.raw", filename);
FILE *fp = fopen(output_name, "wb");
if (!fp) {
fprintf(stderr, "Failed to open file for writing\n");
return;
}
while (err != EIO) {
if (clear_frame)
memset(pixels, 0, 2048 * 1088 * sizeof(uint16_t));
gettimeofday(&start, NULL);
err = ufo_decoder_get_next_frame(decoder, &pixels, &num_rows, &frame_number, &time_stamp, NULL);
gettimeofday(&end, NULL);
if (verbose) {
int time_stamp_diff = 80 * (time_stamp - old_time_stamp);
if (time_stamp_diff != 0)
printf(" %d\t %d\n", 1000000000 / time_stamp_diff, num_rows);
old_time_stamp = time_stamp;
}
if (!err) {
num_frames++;
seconds += end.tv_sec - start.tv_sec;
useconds += end.tv_usec - start.tv_usec;
fwrite(pixels, sizeof(uint16_t), 2048 * 1088, fp);
}
else if (err != EIO)
fprintf(stderr, "Failed to decode frame %i\n", num_frames);
}
fclose(fp);
float mtime = seconds * 1000.0 + useconds / 1000.0;
printf("Decoded %i frames in %.5fms\n", num_frames, mtime);
free(pixels);
ufo_decoder_free(decoder);
free(buffer);
}
int main(int argc, char const* argv[])
{
int getopt_ret, index;
static struct option long_options[] = {
{ "num-rows", required_argument, 0, 'r' },
{ "clear-frame", no_argument, 0, 'c' },
{ "verbose", no_argument, 0, 'v' },
{ "help", no_argument, 0, 'h' },
{ 0, 0, 0, 0 }
};
int clear_frame = 0;
int verbose = 0;
int rows = 1088;
if (argc == 1) {
printf("ipedec: no input files\n");
return 0;
}
while ((getopt_ret = getopt_long(argc, (char *const *) argv, "r:cvh", long_options, &index)) != -1) {
switch (getopt_ret) {
case 'r':
rows = atoi(optarg);
break;
case 'c':
clear_frame = 1;
break;
case 'v':
verbose = 1;
break;
case 'h':
usage();
return 0;
default:
break;
}
}
while (optind < argc)
process_file(argv[optind++], rows, clear_frame, verbose);
return 0;
}
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