refactor get_tx_type()

Change-Id: I2888bd8905253e02e3ac74597275cf56e5142d29
diff --git a/av1/encoder/encodetxb.c b/av1/encoder/encodetxb.c
index 0376871..13e2152 100644
--- a/av1/encoder/encodetxb.c
+++ b/av1/encoder/encodetxb.c
@@ -78,7 +78,7 @@
   MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
   const PLANE_TYPE plane_type = get_plane_type(plane);
   const TX_SIZE txs_ctx = get_txsize_context(tx_size);
-  const TX_TYPE tx_type = get_tx_type(plane_type, xd, block, tx_size);
+  const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, block, tx_size);
   const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
   const int16_t *scan = scan_order->scan;
   int c;
@@ -295,7 +295,7 @@
   const PLANE_TYPE plane_type = get_plane_type(plane);
   (void)blk_row;
   (void)blk_col;
-  const TX_TYPE tx_type = get_tx_type(plane_type, xd, block, tx_size);
+  const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, block, tx_size);
   MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
   const struct macroblock_plane *p = &x->plane[plane];
   const int eob = p->eobs[block];
@@ -1473,7 +1473,7 @@
   const TX_SIZE txs_ctx = get_txsize_context(tx_size);
   (void)blk_row;
   (void)blk_col;
-  const TX_TYPE tx_type = get_tx_type(plane_type, xd, block, tx_size);
+  const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, block, tx_size);
   const MB_MODE_INFO *mbmi = &xd->mi[0]->mbmi;
   const struct macroblock_plane *p = &x->plane[plane];
   struct macroblockd_plane *pd = &xd->plane[plane];
@@ -1548,7 +1548,7 @@
   const uint16_t eob = p->eobs[block];
   const tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block);
   const PLANE_TYPE plane_type = pd->plane_type;
-  const TX_TYPE tx_type = get_tx_type(plane_type, xd, block, tx_size);
+  const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, block, tx_size);
   const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
   (void)plane_bsize;
 
@@ -1573,7 +1573,7 @@
   const tran_low_t *qcoeff = BLOCK_OFFSET(p->qcoeff, block);
   tran_low_t *tcoeff = BLOCK_OFFSET(x->mbmi_ext->tcoeff[plane], block);
   const int segment_id = mbmi->segment_id;
-  const TX_TYPE tx_type = get_tx_type(plane_type, xd, block, tx_size);
+  const TX_TYPE tx_type = av1_get_tx_type(plane_type, xd, block, tx_size);
   const SCAN_ORDER *const scan_order = get_scan(cm, tx_size, tx_type, mbmi);
   const int16_t *scan = scan_order->scan;
   const int seg_eob = get_tx_eob(&cpi->common.seg, segment_id, tx_size);
@@ -1883,11 +1883,11 @@
 
   for (tx_type = txk_start; tx_type <= txk_end; ++tx_type) {
     if (plane == 0) mbmi->txk_type[block] = tx_type;
-    TX_TYPE ref_tx_type =
-        get_tx_type(get_plane_type(plane), xd, block, tx_size);
+    const TX_TYPE ref_tx_type =
+        av1_get_tx_type(get_plane_type(plane), xd, block, tx_size);
     if (tx_type != ref_tx_type) {
-      // use get_tx_type() to check if the tx_type is valid for the current mode
-      // if it's not, we skip it here.
+      // use av1_get_tx_type() to check if the tx_type is valid for the current
+      // mode if it's not, we skip it here.
       continue;
     }