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v4l2bufferpool: set v4l2_buffer.field when queuing buffer in an output device

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According to the current specification, application must set this field
for an output device.

https://bugzilla.gnome.org/show_bug.cgi?id=743013
This commit is contained in:
Aurélien Zanelli 2015-01-15 16:11:53 +01:00 committed by Nicolas Dufresne
parent 8ca40fa86f
commit e57bc43862
1 changed files with 23 additions and 0 deletions
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23
sys/v4l2/gstv4l2bufferpool.c
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@ -1003,6 +1003,7 @@ static GstFlowReturn
gst_v4l2_buffer_pool_qbuf (GstV4l2BufferPool * pool, GstBuffer * buf)
{
GstV4l2MemoryGroup *group = NULL;
const GstV4l2Object *obj = pool->obj;
gint index;
if (!gst_v4l2_is_buffer_valid (buf, &group)) {
@ -1021,6 +1022,28 @@ gst_v4l2_buffer_pool_qbuf (GstV4l2BufferPool * pool, GstBuffer * buf)
g_atomic_int_inc (&pool->num_queued);
pool->buffers[index] = buf;
if (V4L2_TYPE_IS_OUTPUT (obj->type)) {
enum v4l2_field field;
/* Except when field is set to alternate, buffer field is the same as
* the one defined in format */
if (V4L2_TYPE_IS_MULTIPLANAR (obj->type))
field = obj->format.fmt.pix_mp.field;
else
field = obj->format.fmt.pix.field;
/* NB: At this moment, we can't have alternate mode because it not handled
* yet */
if (field == V4L2_FIELD_ALTERNATE) {
if (GST_BUFFER_FLAG_IS_SET (buf, GST_VIDEO_FRAME_FLAG_TFF))
field = V4L2_FIELD_TOP;
else
field = V4L2_FIELD_BOTTOM;
}
group->buffer.field = field;
}
if (!gst_v4l2_allocator_qbuf (pool->vallocator, group))
goto queue_failed;