Rene Bredlau wrote:
> Hi,
>
> even if i do not like the way vdr tries to find the v4l device it can
> use for his grab command i adjusted its handling to work under kernel 2.6.
>
> If somebody can show me a way to determinate which v4l device belongs to
> a DVB driver instance i will build a better patch. But up to this, this
> patch will do the work under 2.6 (2.4 handling still in, but not tested
> from my side - reports, if i didnt break anything are welcome).
>
> The patch should cleanly apply to vdr-1.3.5 (plain and elchi)
>
> Klaus: if the patch did not break anything, could you please but it into
> the your version too? Maybe it is ok for stable to, but dont know ;-).
I just found this old thread while cleaning up my inbox.
Is this still a problem, or have things gotten better due
to other changes (VDR or driver) in the meantime?
Sorry for having lost sight of this one...
Klaus
> ------------------------------------------------------------------------
>
> --- dvbdevice.c 2004-02-24 11:12:13.000000000 +0100
> +++ ../../vdr/dvbdevice.c 2004-03-13 18:07:39.000000000 +0100
> @@ -24,6 +24,7 @@
> #include <linux/dvb/video.h>
> #include <sys/ioctl.h>
> #include <sys/mman.h>
> +#include <sys/utsname.h>
> #include "channels.h"
> #include "diseqc.h"
> #include "dvbosd.h"
> @@ -326,11 +327,37 @@
> if (devVideoOffset < 0) { // the first one checks this
> FILE *f = NULL;
> char buffer[PATH_MAX];
> +
> + char *path_template = "/proc/video/dev/video%d"; // default is 2.4 - maybe this should be 2.6
> + utsname uname_data;
> +
> + // get kernel version
> + if (uname(&uname_data)) {
> + dsyslog("! Could not get info about kernel version !");
> + } else {
> + dsyslog("kernel version %s", uname_data.release);
> + // adjust path template
> + if (!strncmp(uname_data.release,"2.4",3)) {
> + dsyslog("Running on Kernel version 2.4");
> + path_template = "/proc/video/dev/video%d";
> + } else if (!strncmp(uname_data.release,"2.6",3)) {
> + dsyslog("Running on Kernel version 2.6");
> + path_template = "/sys/class/video4linux/video%d/name";
> + } else {
> + dsyslog("! Unknown kernel version falling back to 2.4 behavior !");
> + } // endif kernel version
> + } // endif uname
> +
> for (int ofs = 0; ofs < 100; ofs++) {
> - snprintf(buffer, sizeof(buffer), "/proc/video/dev/video%d", ofs);
> + // the path depend on the kernel version
> + snprintf(buffer, sizeof(buffer), path_template, ofs);
> if ((f = fopen(buffer, "r")) != NULL) {
> if (fgets(buffer, sizeof(buffer), f)) {
> - if (strstr(buffer, "DVB Board")) { // found the _first_ DVB card
> + // here all devices which support output should be listed (aka DVB backends)
> + if (strstr(buffer, "av7110") || // ttpci backend
> + strstr(buffer, "some-other-frontend") || // fill in your backend
> + strstr(buffer, "DVB Board") // this is for kernel 2.4
> + ) { // found the _first_ DVB card
> devVideoOffset = ofs;
> dsyslog("video device offset is %d", devVideoOffset);
> break;
