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sys/v4l2/v4l2src_calls.c: Add some more debugging in the framerate function.

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Original commit message from CVS:
* sys/v4l2/v4l2src_calls.c:
(gst_v4l2src_probe_caps_for_format_and_size):
Add some more debugging in the framerate function.
Iterate stepwise framerate up to and _including_ the max and if nothing
was added to the list, add a dummy 0/1 to 100/1 framerate so that we
don't end up with an empty list.
This commit is contained in:
Wim Taymans 2007-09-05 00:12:46 +00:00
parent 93e1176891
commit c9d0575c74
2 changed files with 41 additions and 9 deletions
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9
ChangeLog
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@ -1,3 +1,12 @@
2007-09-04 Wim Taymans <wim.taymans@gmail.com>
* sys/v4l2/v4l2src_calls.c:
(gst_v4l2src_probe_caps_for_format_and_size):
Add some more debugging in the framerate function.
Iterate stepwise framerate up to and _including_ the max and if nothing
was added to the list, add a dummy 0/1 to 100/1 framerate so that we
don't end up with an empty list.
2007-09-04 Wim Taymans <wim.taymans@gmail.com>
* gst/udp/gstmultiudpsink.c: (gst_multiudpsink_class_init),

41
sys/v4l2/v4l2src_calls.c
View file

@ -462,9 +462,11 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
ival.width = width;
ival.height = height;
GST_LOG_OBJECT (v4l2src, "get frame interval for %ux%u, %" GST_FOURCC_FORMAT,
width, height, GST_FOURCC_ARGS (pixelformat));
/* keep in mind that v4l2 gives us frame intervals (durations); we invert the
* fraction to get framerate */
if (ioctl (fd, VIDIOC_ENUM_FRAMEINTERVALS, &ival) < 0)
goto enum_frameintervals_failed;
@ -472,7 +474,6 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
GValue frac = { 0, };
g_value_init (&rate, GST_TYPE_LIST);
g_value_init (&frac, GST_TYPE_FRACTION);
do {
@ -485,6 +486,8 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
denom >>= 1;
}
GST_LOG_OBJECT (v4l2src, "adding discrete framerate: %d/%d", denom, num);
gst_value_set_fraction (&frac, denom, num);
gst_value_list_append_value (&rate, &frac);
@ -494,6 +497,7 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
GValue frac = { 0, };
GValue step = { 0, };
GValue max = { 0, };
gboolean added = FALSE;
g_value_init (&rate, GST_TYPE_LIST);
@ -507,6 +511,7 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
num >>= 1;
denom >>= 1;
}
GST_LOG_OBJECT (v4l2src, "stepwise min frame interval: %d/%d", num, denom);
gst_value_set_fraction (&frac, num, denom);
num = ival.stepwise.step.numerator;
@ -517,6 +522,7 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
}
/* since we only have gst_value_fraction_subtract and not add, negate the
numerator */
GST_LOG_OBJECT (v4l2src, "stepwise step frame interval: %d/%d", num, denom);
gst_value_set_fraction (&step, -num, denom);
num = ival.stepwise.max.numerator;
@ -525,22 +531,35 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
num >>= 1;
denom >>= 1;
}
GST_LOG_OBJECT (v4l2src, "stepwise max frame interval: %d/%d", num, denom);
gst_value_set_fraction (&max, num, denom);
while (gst_value_compare (&frac, &max) == GST_VALUE_LESS_THAN) {
while (gst_value_compare (&frac, &max) <= 0) {
GValue frac = { 0, };
g_value_init (&frac, GST_TYPE_FRACTION);
/* invert */
gst_value_set_fraction (&frac,
gst_value_get_fraction_denominator (&frac),
gst_value_get_fraction_numerator (&frac));
gst_value_list_append_value (&rate, &frac);
num = gst_value_get_fraction_numerator (&frac);
denom = gst_value_get_fraction_denominator (&frac);
GST_LOG_OBJECT (v4l2src, "adding stepwise framerate: %d/%d", denom, num);
/* invert to get the framerate */
gst_value_set_fraction (&frac, denom, num);
gst_value_list_append_value (&rate, &frac);
added = TRUE;
/* we're actually adding because step was negated above. This is because
* there is no _add function... */
if (!gst_value_fraction_subtract (&frac, &frac, &step)) {
GST_INFO_OBJECT (v4l2src, "could not step fraction!");
GST_WARNING_OBJECT (v4l2src, "could not step fraction!");
break;
}
}
if (!added) {
/* no range was added, make a default range */
GST_WARNING_OBJECT (v4l2src, "no range added, setting 0/1 to 100/1");
g_value_init (&rate, GST_TYPE_FRACTION_RANGE);
gst_value_set_fraction_range_full (&rate, 0, 1, 100, 1);
}
} else if (ival.type == V4L2_FRMIVAL_TYPE_CONTINUOUS) {
guint32 maxnum, maxdenom;
@ -553,6 +572,7 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
denom >>= 1;
}
/* FIXME? doesn't it make more sense to have min and max as the range? */
maxnum = ival.stepwise.step.numerator;
maxdenom = ival.stepwise.step.denominator;
if (maxnum > G_MAXINT || maxdenom > G_MAXINT) {
@ -560,6 +580,9 @@ gst_v4l2src_probe_caps_for_format_and_size (GstV4l2Src * v4l2src,
maxdenom >>= 1;
}
GST_LOG_OBJECT (v4l2src, "continuous frame interval %d/%d to %d/%d",
maxdenom, maxnum, denom, num);
gst_value_set_fraction_range_full (&rate, maxdenom, maxnum, denom, num);
} else {
goto unknown_type;