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v4l2object: Move the extrapolation of stride at the right place

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Now that we have a stride array, we should extrapolate only when
eeded (non multi-planar buffer).

https://bugzilla.gnome.org/show_bug.cgi?id=720568
This commit is contained in:
Nicolas Dufresne 2013-12-04 16:23:18 -05:00
parent 5f1e47da24
commit 5faa20b044
2 changed files with 29 additions and 33 deletions
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21
sys/v4l2/gstv4l2bufferpool.c
View file

@ -317,25 +317,10 @@ gst_v4l2_buffer_pool_alloc_buffer (GstBufferPool * bpool, GstBuffer ** buffer,
obj->bytesperline[i]); obj->bytesperline[i]);
offset[i] = offs; offset[i] = offs;
stride[i] = obj->bytesperline[i];
switch (info->finfo->format) { /* when using multiplanar mode and if there is more then one v4l
case GST_VIDEO_FORMAT_NV12: * plane for each gst plane
case GST_VIDEO_FORMAT_NV21:
case GST_VIDEO_FORMAT_NV16:
case GST_VIDEO_FORMAT_NV24:
stride[i] =
(i == 0 ? 1 : 2) * GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo,
i, obj->bytesperline[i]);
break;
default:
stride[i] =
GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i,
obj->bytesperline[i]);
break;
}
/* when using multiplanar mode and if there is one v4l plane for
* each gst plane
*/ */
if (V4L2_TYPE_IS_MULTIPLANAR (obj->type) && meta->n_planes > 1) if (V4L2_TYPE_IS_MULTIPLANAR (obj->type) && meta->n_planes > 1)
/* non_contiguous case here so we have to make sure that gst goes to the /* non_contiguous case here so we have to make sure that gst goes to the

41
sys/v4l2/gstv4l2object.c
View file

@ -2504,7 +2504,7 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
guint32 pixelformat; guint32 pixelformat;
struct v4l2_fmtdesc *fmtdesc; struct v4l2_fmtdesc *fmtdesc;
GstVideoInfo info; GstVideoInfo info;
gint width, height, fps_n, fps_d, stride; gint width, height, fps_n, fps_d;
gint i = 0; gint i = 0;
GST_V4L2_CHECK_OPEN (v4l2object); GST_V4L2_CHECK_OPEN (v4l2object);
@ -2518,7 +2518,6 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
height = GST_VIDEO_INFO_HEIGHT (&info); height = GST_VIDEO_INFO_HEIGHT (&info);
fps_n = GST_VIDEO_INFO_FPS_N (&info); fps_n = GST_VIDEO_INFO_FPS_N (&info);
fps_d = GST_VIDEO_INFO_FPS_D (&info); fps_d = GST_VIDEO_INFO_FPS_D (&info);
stride = GST_VIDEO_INFO_PLANE_STRIDE (&info, 0);
/* get bytesperline for each plane */ /* get bytesperline for each plane */
for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&info); i++) for (i = 0; i < GST_VIDEO_INFO_N_PLANES (&info); i++)
@ -2537,7 +2536,7 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
GST_DEBUG_OBJECT (v4l2object->element, "Desired format %dx%d, format " GST_DEBUG_OBJECT (v4l2object->element, "Desired format %dx%d, format "
"%" GST_FOURCC_FORMAT " stride: %d", width, height, "%" GST_FOURCC_FORMAT " stride: %d", width, height,
GST_FOURCC_ARGS (pixelformat), stride); GST_FOURCC_ARGS (pixelformat), v4l2object->bytesperline[0]);
/* MPEG-TS source cameras don't get their format set for some reason. /* MPEG-TS source cameras don't get their format set for some reason.
* It looks wrong and we weren't able to track down the reason for that code * It looks wrong and we weren't able to track down the reason for that code
@ -2628,10 +2627,7 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
v4l2object->n_v4l2_planes = format.fmt.pix_mp.num_planes; v4l2object->n_v4l2_planes = format.fmt.pix_mp.num_planes;
v4l2object->sizeimage = 0; v4l2object->sizeimage = 0;
for (i = 0; i < format.fmt.pix_mp.num_planes; i++) { for (i = 0; i < format.fmt.pix_mp.num_planes; i++) {
/* For compatibility reasons with the non-v4l2-multiplanar mode v4l2object->bytesperline[i] = format.fmt.pix_mp.plane_fmt[i].bytesperline;
* we have to use the bytesperline of<F3> the first v4l plane
* See plane_fmt[0] instead of plane_fmt[i] in next line */
v4l2object->bytesperline[i] = format.fmt.pix_mp.plane_fmt[0].bytesperline;
v4l2object->sizeimage += format.fmt.pix_mp.plane_fmt[i].sizeimage; v4l2object->sizeimage += format.fmt.pix_mp.plane_fmt[i].sizeimage;
} }
} else { } else {
@ -2650,7 +2646,7 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
/* something different, set the format */ /* something different, set the format */
GST_DEBUG_OBJECT (v4l2object->element, "Setting format to %dx%d, format " GST_DEBUG_OBJECT (v4l2object->element, "Setting format to %dx%d, format "
"%" GST_FOURCC_FORMAT " bytesperline %d", width, height, "%" GST_FOURCC_FORMAT " bytesperline %d", width, height,
GST_FOURCC_ARGS (pixelformat), stride); GST_FOURCC_ARGS (pixelformat), v4l2object->bytesperline[0]);
format.type = v4l2object->type; format.type = v4l2object->type;
format.fmt.pix.width = width; format.fmt.pix.width = width;
@ -2658,7 +2654,7 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
format.fmt.pix.pixelformat = pixelformat; format.fmt.pix.pixelformat = pixelformat;
format.fmt.pix.field = field; format.fmt.pix.field = field;
/* try to ask our prefered stride */ /* try to ask our prefered stride */
format.fmt.pix.bytesperline = stride; format.fmt.pix.bytesperline = v4l2object->bytesperline[0];
if (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) < 0) if (v4l2_ioctl (fd, VIDIOC_S_FMT, &format) < 0)
goto set_fmt_failed; goto set_fmt_failed;
@ -2684,12 +2680,27 @@ gst_v4l2_object_set_format (GstV4l2Object * v4l2object, GstCaps * caps)
v4l2object->n_v4l2_planes = 1; v4l2object->n_v4l2_planes = 1;
/* figure out the frame layout */ /* figure out the frame layout */
for (i = 0; i < GST_VIDEO_MAX_PLANES; i++) { for (i = 0; i < info.finfo->n_planes; i++) {
/* In non-multiplanar mode, there is only one field for bytesperline const GstVideoFormatInfo *finfo = info.finfo;
* Just set it everywhere in order to the code factorized guint stride = format.fmt.pix.bytesperline;
* with multiplanar case in gstv4l2bufferpool.c::alloc_buffer function
*/ switch (info.finfo->format) {
v4l2object->bytesperline[i] = format.fmt.pix.bytesperline; case GST_VIDEO_FORMAT_NV12:
case GST_VIDEO_FORMAT_NV21:
case GST_VIDEO_FORMAT_NV16:
case GST_VIDEO_FORMAT_NV24:
v4l2object->bytesperline[i] = (i == 0 ? 1 : 2) *
GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, stride);
break;
default:
v4l2object->bytesperline[i] =
GST_VIDEO_FORMAT_INFO_SCALE_WIDTH (finfo, i, stride);
break;
}
GST_DEBUG_OBJECT (v4l2object->element,
"Extrapolated stride for plane %d from %d to %d", i, stride,
v4l2object->bytesperline[i]);
} }
v4l2object->sizeimage = format.fmt.pix.sizeimage; v4l2object->sizeimage = format.fmt.pix.sizeimage;