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sys/v4l2/v4l2src_calls.c: Try progressive video if interlaced fails. Fixes bug #541956 and the usage of v4l2src on OLPC.

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Original commit message from CVS:
Patch by: Daniel Drake <dsd at gentoo dot org>
* sys/v4l2/v4l2src_calls.c: (gst_v4l2src_set_capture),
(gst_v4l2src_get_nearest_size):
Try progressive video if interlaced fails. Fixes bug #541956
and the usage of v4l2src on OLPC.
This commit is contained in:
Daniel Drake 2008-07-07 21:28:58 +00:00 committed by Sebastian Dröge
parent 0db3e69da9
commit 23078b431b
2 changed files with 51 additions and 9 deletions
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9
ChangeLog
View file

@ -1,3 +1,12 @@
2008-07-07 Sebastian Dröge <sebastian.droege@collabora.co.uk>
Patch by: Daniel Drake <dsd at gentoo dot org>
* sys/v4l2/v4l2src_calls.c: (gst_v4l2src_set_capture),
(gst_v4l2src_get_nearest_size):
Try progressive video if interlaced fails. Fixes bug #541956
and the usage of v4l2src on OLPC.
2008-07-07 Sebastian Dröge <sebastian.droege@collabora.co.uk>
* gst/rtp/gstrtpspeexdepay.c: (gst_rtp_speex_depay_init),

51
sys/v4l2/v4l2src_calls.c
View file

@ -107,8 +107,8 @@ gst_v4l2_buffer_finalize (GstV4l2Buffer * buffer)
gst_mini_object_unref (GST_MINI_OBJECT (pool));
munmap ((void *) GST_BUFFER_DATA (buffer), buffer->vbuffer.length);
GST_MINI_OBJECT_CLASS (v4l2buffer_parent_class)->
finalize (GST_MINI_OBJECT (buffer));
GST_MINI_OBJECT_CLASS (v4l2buffer_parent_class)->finalize (GST_MINI_OBJECT
(buffer));
}
}
@ -240,8 +240,8 @@ gst_v4l2_buffer_pool_finalize (GstV4l2BufferPool * pool)
if (pool->buffers)
g_free (pool->buffers);
pool->buffers = NULL;
GST_MINI_OBJECT_CLASS (buffer_pool_parent_class)->
finalize (GST_MINI_OBJECT (pool));
GST_MINI_OBJECT_CLASS (buffer_pool_parent_class)->finalize (GST_MINI_OBJECT
(pool));
}
static void
@ -1176,11 +1176,23 @@ gst_v4l2src_set_capture (GstV4l2Src * v4l2src, guint32 pixelformat,
format.fmt.pix.width = width;
format.fmt.pix.height = height;
format.fmt.pix.pixelformat = pixelformat;
/* request whole frames; change when gstreamer supports interlaced video */
/* request whole frames; change when gstreamer supports interlaced video
* (INTERLACED mode returns frames where the fields have already been
* combined, there are other modes for requesting fields individually) */
format.fmt.pix.field = V4L2_FIELD_INTERLACED;
if (ioctl (fd, VIDIOC_S_FMT, &format) < 0)
goto set_fmt_failed;
if (ioctl (fd, VIDIOC_S_FMT, &format) < 0) {
if (errno != EINVAL)
goto set_fmt_failed;
/* try again with progressive video */
format.fmt.pix.width = width;
format.fmt.pix.height = height;
format.fmt.pix.pixelformat = pixelformat;
format.fmt.pix.field = V4L2_FIELD_NONE;
if (ioctl (fd, VIDIOC_S_FMT, &format) < 0)
goto set_fmt_failed;
}
if (format.fmt.pix.width != width || format.fmt.pix.height != height)
goto invalid_dimensions;
@ -1500,6 +1512,7 @@ gst_v4l2src_get_nearest_size (GstV4l2Src * v4l2src, guint32 pixelformat,
{
struct v4l2_format fmt;
int fd;
int r;
g_return_val_if_fail (width != NULL, FALSE);
g_return_val_if_fail (height != NULL, FALSE);
@ -1518,7 +1531,17 @@ gst_v4l2src_get_nearest_size (GstV4l2Src * v4l2src, guint32 pixelformat,
fmt.fmt.pix.pixelformat = pixelformat;
fmt.fmt.pix.field = V4L2_FIELD_INTERLACED;
if (ioctl (fd, VIDIOC_TRY_FMT, &fmt) < 0) {
r = ioctl (fd, VIDIOC_TRY_FMT, &fmt);
if (r < 0 && errno == EINVAL) {
/* try again with progressive video */
fmt.fmt.pix.width = *width;
fmt.fmt.pix.height = *height;
fmt.fmt.pix.pixelformat = pixelformat;
fmt.fmt.pix.field = V4L2_FIELD_NONE;
r = ioctl (fd, VIDIOC_TRY_FMT, &fmt);
}
if (r < 0) {
/* The driver might not implement TRY_FMT, in which case we will try
S_FMT to probe */
if (errno != ENOTTY)
@ -1535,7 +1558,17 @@ gst_v4l2src_get_nearest_size (GstV4l2Src * v4l2src, guint32 pixelformat,
fmt.fmt.pix.width = *width;
fmt.fmt.pix.height = *height;
if (ioctl (fd, VIDIOC_S_FMT, &fmt) < 0)
r = ioctl (fd, VIDIOC_S_FMT, &fmt);
if (r < 0 && errno == EINVAL) {
/* try again with progressive video */
fmt.fmt.pix.width = *width;
fmt.fmt.pix.height = *height;
fmt.fmt.pix.pixelformat = pixelformat;
fmt.fmt.pix.field = V4L2_FIELD_NONE;
r = ioctl (fd, VIDIOC_S_FMT, &fmt);
}
if (r < 0)
return FALSE;
}