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More verbose scanning of /dev/video* devices

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This commit is contained in:
Andreas Öman 2009-12-10 19:59:00 +00:00
parent b12ee4f4ec
commit a4a133d47d
1 changed files with 32 additions and 16 deletions
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48
src/v4l.c
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@ -205,7 +205,7 @@ v4l_transport_start(th_transport_t *t, unsigned int weight, int force_start)
return -1;
}
tvhlog(LOG_DEBUG, "v4l",
tvhlog(LOG_INFO, "v4l",
"%s: Tuned to %dHz", va->va_path, frequency);
if(pipe(va->va_pipe)) {
@ -410,20 +410,20 @@ v4l_adapter_check(const char *path, int fd)
r = ioctl(fd, VIDIOC_QUERYCAP, &caps);
if(r) {
tvhlog(LOG_DEBUG, "v4l",
"Can not query capabilities on %s, device skipped", path);
tvhlog(LOG_WARNING, "v4l",
"%s: Can not query capabilities, device skipped", path);
return;
}
if(!(caps.capabilities & V4L2_CAP_VIDEO_CAPTURE)) {
tvhlog(LOG_DEBUG, "v4l",
"Device %s not a video capture device, device skipped", path);
tvhlog(LOG_WARNING, "v4l",
"%s: Device is not a video capture device, device skipped", path);
return;
}
if(!(caps.capabilities & V4L2_CAP_TUNER)) {
tvhlog(LOG_DEBUG, "v4l",
"Device %s does not have a built-in tuner, device skipped", path);
tvhlog(LOG_WARNING, "v4l",
"%s: Device does not have a tuner, device skipped", path);
return;
}
@ -436,18 +436,21 @@ v4l_adapter_check(const char *path, int fd)
if(ioctl(fd, VIDIOC_ENUMSTD, &standard))
break;
#if 0
printf("%3d: %016llx %24s %d/%d %d lines\n",
tvhlog(LOG_INFO, "v4l",
"%s: Standard #%d: %016llx %s, frameperiod: %d/%d, %d lines",
path,
standard.index,
standard.id,
standard.name,
standard.frameperiod.numerator,
standard.frameperiod.denominator,
standard.framelines);
#endif
}
int can_mpeg = 0;
/* Enum formats */
for(i = 0;; i++) {
@ -456,16 +459,29 @@ v4l_adapter_check(const char *path, int fd)
fmtdesc.index = i;
fmtdesc.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if(ioctl(fd, VIDIOC_ENUM_FMT, &fmtdesc)) {
tvhlog(LOG_DEBUG, "v4l",
"Device %s has no suitable formats, device skipped", path);
return;
}
if(ioctl(fd, VIDIOC_ENUM_FMT, &fmtdesc))
break;
tvhlog(LOG_INFO, "v4l",
"%s: Format #%d: %s %c%c%c%c %s",
path,
fmtdesc.index,
fmtdesc.description,
fmtdesc.pixelformat >> 24,
fmtdesc.pixelformat >> 16,
fmtdesc.pixelformat >> 8,
fmtdesc.pixelformat,
fmtdesc.flags & V4L2_FMT_FLAG_COMPRESSED ? "(compressed)" : "");
if(fmtdesc.pixelformat == V4L2_PIX_FMT_MPEG)
break;
can_mpeg = 1;
}
if(!can_mpeg) {
tvhlog(LOG_WARNING, "v4l",
"%s: Device lacks MPEG encoder, device skipped", path);
return;
}
snprintf(devicename, sizeof(devicename), "%s %s %s",
caps.card, caps.driver, caps.bus_info);