Messages in this thread | | | Date | Fri, 7 Jan 2000 22:42:39 -0700 | From | Erik Andersen <> | Subject | Re: how to set DVD read speed for Pioneer DVD-303S ? |
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On Wed Jan 05, 2000 at 08:41:32PM +0100, Harald Koenig wrote: > does anyone know details about Pioneer DVD-303S drive how to set > the read speed for DVD media ? > > with CDROM media I get up to 4.6MB/sec (32x) as specified and expected, > but when reading DVD media I only get sustained 2.7 MB/sec (2x) for the > whole disc whereas that drive should be 2x-6x (up to 8.1 MB/sec) for DVDs. > > does anyone have techincal/scsi docs for that drive ?
Have you tried something like:
#include <stdio.h> #include <stdlib.h> #include <fcntl.h> #include <linux/cdrom.h> #include <sys/ioctl.h>
/* Max it out */ #define HOWFAST 0
main(int ac, char ** av) { char * device = "/dev/scd0"; int fd; int status; fd = open(device, O_RDONLY | O_NONBLOCK); if (fd < 0) { perror("Can't open device: "); exit(-2); } /* `0' means auto-selection, you might also try big numbers :) */ status=ioctl(fd, CDROM_SELECT_SPEED, 0); if (status) { perror("Can't set speed: "); exit(-1); } }
Also check out the drive speed field when running cat /proc/sys/dev/cdrom/info and see if it changes when running the setspeed app.
-Erik
-- Erik B. Andersen Web: http://www.xmission.com/~andersen/ email: andersee@debian.org --This message was written using 73% post-consumer electrons--
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