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#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <unistd.h>
#include <ctype.h>
#include <string.h>
#define AENCODER_OUTPUT_BUF_LENGTH 1024
#define AENCODER_OUTPUT_LINE_LENGTH 19
#define AENCODER_STATUS_LENGTH 5
#define CD_SECTORS_PER_FRAME (float)1.959
#define PRINTOUT_INTERVAL 0.5
int aEncoder_read_stat (unsigned *current);
int find_aEncoder_output_read_offset (char *buf, int begin, int end);
void print_msg (int length, int current);
int
aEncoder_read_stat (unsigned *current)
{
static char buf[AENCODER_OUTPUT_BUF_LENGTH];
static char status[AENCODER_STATUS_LENGTH];
int temp_offset, read_offset;
ssize_t bytes_read;
int bytes_avail, count;
static int prev_bytes_avail;
ioctl (0, FIONREAD, &bytes_avail);
if (bytes_avail < 4 * AENCODER_OUTPUT_LINE_LENGTH) {
if (bytes_avail == prev_bytes_avail)
/* nothing available, let's wait */
return -1;
else {
/* Record available bytes, and let's just wait */
prev_bytes_avail = bytes_avail;
return -1;
}
}
prev_bytes_avail = -1;
count = 0;
do {
bytes_read = read (0, (void *) buf, sizeof (buf));
temp_offset = bytes_read - 4 * AENCODER_OUTPUT_LINE_LENGTH - 1;
read_offset = find_aEncoder_output_read_offset (buf,
temp_offset,
sizeof (buf) - 1);
if (read_offset < 0 ||
read_offset > sizeof (buf) - AENCODER_OUTPUT_LINE_LENGTH) {
if (count == 0)
return -1;
else
break;
}
strncpy (status, buf + read_offset, sizeof (status));
status[sizeof (status) - 1] = '\0';
sscanf (status, "%u", current);
/* Convert it to cd sector unit */
*current *= CD_SECTORS_PER_FRAME;
count++;
} while (bytes_read == sizeof (buf));
if (*current != 0)
return 0;
return -1;
}
int
find_aEncoder_output_read_offset (char *buf, int begin, int end)
{
int i;
i = begin;
do {
while (buf[i] != '[' && i <= end - 5)
i++;
if (buf[i + 1] == ' ' && isdigit (buf[i + 5]))
return i + 2;
else
i++;
} while (i <= end - 5);
return -1;
}
// print out [P 0.xxxx]\n
void
print_msg (int length, int current)
{
printf ("[P ");
printf ("%f]\n", (double) current / (double) length);
}
int
main (int argc, char **argv)
{
int begin, length;
int current;
if (argc != 3) {
fprintf (stderr, "This is ripperX plugin for the ISO encoder version 2. Syntax is\n"
"ripperX_plugin-encoder beginning_sector length_in_sector\n");
exit (1);
}
sscanf (argv[1], "%d", &begin);
sscanf (argv[2], "%d", &length);
print_msg (length, 0);
while (1) {
if (aEncoder_read_stat (¤t) == 0)
print_msg (length, current);
usleep (PRINTOUT_INTERVAL * 1000000);
}
}
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