From 547ed9cdc5a3094f3d868718f8e81a9efb410773 Mon Sep 17 00:00:00 2001
From: Jia Rong <jia.rong@mediatek.com>
Date: Tue, 19 Sep 2017 09:50:38 +0800
Subject: [PATCH] v4l2: remove get camera link number feature

---
 sys/v4l2/gstv4l2bufferpool.c |  8 --------
 sys/v4l2/gstv4l2object.c     | 27 ++-------------------------
 sys/v4l2/gstv4l2object.h     |  1 -
 3 files changed, 2 insertions(+), 34 deletions(-)

diff --git a/sys/v4l2/gstv4l2bufferpool.c b/sys/v4l2/gstv4l2bufferpool.c
index 66a7551..135d12b 100644
--- a/sys/v4l2/gstv4l2bufferpool.c
+++ b/sys/v4l2/gstv4l2bufferpool.c
@@ -1216,7 +1216,6 @@ gst_v4l2_buffer_pool_dqbuf (GstV4l2BufferPool * pool, GstBuffer ** buffer)
   GstClockTime timestamp;
   GstV4l2MemoryGroup *group;
   gint i;
-  gint *index = NULL;
 
   if ((res = gst_v4l2_buffer_pool_poll (pool)) != GST_FLOW_OK)
     goto poll_failed;
@@ -1338,13 +1337,6 @@ gst_v4l2_buffer_pool_dqbuf (GstV4l2BufferPool * pool, GstBuffer ** buffer)
 
 done:
   *buffer = outbuf;
-  if (obj->link > 1) {
-    index = g_slice_new0 (gint);
-    *index = group->buffer.index;
-    gst_mini_object_set_qdata (GST_MINI_OBJECT (*buffer), GST_MTK_AVM_INDEX,
-        index, (GDestroyNotify) gst_destroy_mtk_avm_index);
-    GST_INFO("add index=%p *index=%d to *buf %p", index, *index, *buffer);
-  }
 
   return GST_FLOW_OK;
 
diff --git a/sys/v4l2/gstv4l2object.c b/sys/v4l2/gstv4l2object.c
index 6d10400..d0e94bb 100644
--- a/sys/v4l2/gstv4l2object.c
+++ b/sys/v4l2/gstv4l2object.c
@@ -802,23 +802,7 @@ gst_v4l2_get_driver_min_buffers (GstV4l2Object * v4l2object)
         "driver requires a minimum of %d buffers", control.value);
     v4l2object->min_buffers = control.value;
   } else {
-    struct v4l2_streamparm streamparm;
-    guint link = 0;
-
-    memset (&streamparm, 0x00, sizeof (struct v4l2_streamparm));
-    streamparm.type = v4l2object->type;
-
-    if (v4l2_ioctl (v4l2object->video_fd, VIDIOC_G_PARM, &streamparm) >= 0) {
-	link = streamparm.parm.capture.reserved[0];
-	v4l2object->link = v4l2object->link > 0 ? v4l2object->link : link;
-	v4l2object->min_buffers = link * 2;
-
-        GST_DEBUG_OBJECT (v4l2object->element,
-          "%d camera linked. set min_buffers to %d", link, v4l2object->min_buffers);
-    } else {
-      GST_DEBUG_OBJECT (v4l2object->element, "set min_buffers to 0");
-	    v4l2object->min_buffers = 0;
-    }
+    v4l2object->min_buffers = 0;
   }
 }
 
@@ -3503,7 +3487,6 @@ gst_v4l2_object_set_format_full (GstV4l2Object * v4l2object, GstCaps * caps,
   GST_VIDEO_INFO_FPS_N (&info) =
       streamparm.parm.capture.timeperframe.denominator;
   GST_VIDEO_INFO_FPS_D (&info) = streamparm.parm.capture.timeperframe.numerator;
-  v4l2object->link =  streamparm.parm.capture.reserved[0];
 
   if (v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE
       || v4l2object->type == V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) {
@@ -4079,17 +4062,11 @@ gst_v4l2_object_decide_allocation (GstV4l2Object * obj, GstQuery * query)
      * driver and 1 more, so we don't endup up with everything downstream or
      * held by the decoder. */
     own_min = min + obj->min_buffers + 1;
-    if (obj->link) {
-       own_min = obj->min_buffers + obj->link;
-       GST_DEBUG_OBJECT (obj->element, "own_min = %d link=%d", own_min, obj->link);
-    }
 
     /* If no allocation parameters where provided, allow for a little more
      * buffers and enable copy threshold */
     if (!update) {
-      if (obj->link <= 1) {
-        own_min += 3;
-      }
+      own_min += 3;
       gst_v4l2_buffer_pool_copy_at_threshold (GST_V4L2_BUFFER_POOL (pool),
           TRUE);
     } else {
diff --git a/sys/v4l2/gstv4l2object.h b/sys/v4l2/gstv4l2object.h
index 8c5cb06..0fca419 100644
--- a/sys/v4l2/gstv4l2object.h
+++ b/sys/v4l2/gstv4l2object.h
@@ -166,7 +166,6 @@ struct _GstV4l2Object {
   GstStructure *extra_controls;
   gboolean keep_aspect;
   GValue *par;
-  guint link;
 
   /* X-overlay */
   GstV4l2Xv *xv;
-- 
1.9.1