Differences

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--- dvd_title [2013/08/01 10:48]
beandog
+++ dvd_title [2018/03/27 23:53] (current)
beandog
@@ Line 1: / Line 1: @@
 ====== DVD Title ======
-Each disc will have a title assigned to it.  This is a small string.  The disc title is **not** a unique identifer in itself, but it can be used as an element in creating one if you are archiving your titles.
+  * [[dvd_info]]
+  * [[lsdvd]]
+  * [[volname]]
+I used to have a ''dvd_title'' binary I wrote, but I merged it into [[dvd_info]] instead. It returns the UDF volume name. It must be an ISO or the DVD itself in the drive to print it.
+<code>
+$ dvd_info --title
+BATMAN_BEYOND_SEASON_1_DISC_2
+</code>
+Each disc will have a title assigned to it.  This is a small string.  The disc title is **not** a unique identifer in itself, but it can be used as an element in creating one if you are archiving your titles. I recommend using the [[dvd_id|DVD id instead]].
+Most of this page content is old, since I have [[dvd_info]] now.
 Most programs that access your DVD will at some point usually spit it out as part of displaying the metadata.
@@ Line 18: / Line 31: @@
 <code>
 lsdvd dvd.iso 2> /dev/null | grep "^Disc Title" | cut -d " " -f 3-
+</code>
+Or you can use ''dd'':
+<code>
+dd if=VIDEO_TS.IFO bs=1 count=32 skip=64 2> /dev/null
+</code>
+Also, here's a small C program I <del>wrote</del> cobbled together from multiple sources to get it as well:
+<code c>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <sys/ioctl.h>
+#include <fcntl.h>
+#include <linux/cdrom.h>
+/**
+ * A simple little program to get the DVD title
+ *
+ * Checks if the device is a DVD drive or not, and if it is, also looks to see
+ * if it can be polled or not.
+ */
+int main(int argc, char **argv) {
+	int cdrom;
+	int drive_status;
+	int disc_status;
+	char* dvd_device;
+	char* status;
+	char title[33];
+	FILE* filehandle = 0;
+	int x, y, z;
+	if(argc == 1)
+		dvd_device = "/dev/dvd";
+	else
+		dvd_device = argv[1];
+	// Check if device exists
+	if(access(dvd_device, F_OK) != 0) {
+		fprintf(stderr, "cannot access %s\n", dvd_device);
+		return 1;
+	}
+	// Open device
+	cdrom = open(dvd_device, O_RDONLY | O_NONBLOCK);
+	if(cdrom < 0) {
+		fprintf(stderr, "error opening %s\n", dvd_device);
+		return 1;
+	}
+	drive_status = ioctl(cdrom, CDROM_DRIVE_STATUS);
+	// If the device is a DVD drive, then wait up to 30 seconds for it to be ready (not opening or closing),
+	// and then check if there is a disc in the tray.  If there's no disc, exit quietly.
+	// If the drive is open, then it just quietly exits.
+	if(drive_status > 0) {
+		int max_sleepy_time = 30;
+		int num_sleepy_times = 0;
+		while(ioctl(cdrom, CDROM_DRIVE_STATUS) == CDS_DRIVE_NOT_READY && num_sleepy_times < max_sleepy_time) {
+			sleep(1);
+			num_sleepy_times++;
+		}
+		if(ioctl(cdrom, CDROM_DRIVE_STATUS) != CDS_DISC_OK) {
+			close(cdrom);
+			return 1;
+		}
+	}
+	close(cdrom);
+	filehandle = fopen(dvd_device, "r");
+	if(filehandle == NULL) {
+		fprintf(stderr, "could not open device %s for reading\n", dvd_device);
+		return 1;
+	}
+	if(fseek(filehandle, 32808, SEEK_SET) == -1) {
+		fprintf(stderr, "could not seek on device %s\n", dvd_device);
+		fclose(filehandle);
+		return 1;
+	}
+	x = fread(title, 1, 32, filehandle);
+	if(x == 0) {
+		fprintf(stderr, "could not read device %s\n", dvd_device);
+		fclose(filehandle);
+		return 1;
+	}
+	title[32] = '\0';
+	fclose(filehandle);
+	y = sizeof(title);
+	while(y-- > 2) {
+		if(title[y] == ' ') {
+			title[y] = '\0';
+		}
+	}
+	for(z = 0; z < strlen(title); z++) {
+		printf("%c", title[z]);
+	}
+	printf("\n");
+	return 0;
+}
 </code>

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