From b50ec827c6fd7d95375e627a1bedd1236ef02e8c Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Wed, 26 Aug 2015 15:42:43 +0800
Subject: ...

---
 htk_io/init.lua | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

(limited to 'htk_io')

diff --git a/htk_io/init.lua b/htk_io/init.lua
index b836e15..abaa794 100644
--- a/htk_io/init.lua
+++ b/htk_io/init.lua
@@ -29,7 +29,31 @@ function TNetReader:get_data()
     end
     local res = {}
     -- read HTK feature
-    local feat_utter = self.feat_repo:cur_utter(self.debug)
+    local raw = self.gconf.cumat_type.new_from_host(self.feat_repo:cur_utter(self.debug))
+    local rearranged
+    if self.frm_ext and self.frm_ext > 0 then
+        local step = self.frm_ext * 2 + 1
+        -- expand the feature
+        local expanded = self.gconf.cumat_type(raw:nrow(), raw:ncol() * step)
+        expanded:expand_frm(raw, self.frm_ext)
+        -- rearrange the feature (``transpose'' operation in TNet)
+        if self.gconf.rearrange then
+            rearranged = expanded:create()
+            rearranged:rearrange_frm(expanded, step)
+        else
+            rearranged = expanded
+        end
+    else
+        rearranged = raw
+    end
+    local feat_utter
+    if self.gconf.frm_trim then
+        feat_utter = self.gconf.mmat_type(rearranged:nrow() - self.gconf.frm_trim * 2, rearranged:ncol())
+        rearranged:copy_toh(feat_utter, self.gconf.frm_trim, rearranged:nrow() - self.gconf.frm_trim)
+    else
+        feat_utter = self.gconf.mmat_type(rearranged:nrow(), rearranged:ncol())
+        rearranged:copy_toh(feat_utter)
+    end
     res[self.feat_id] = feat_utter
     -- add corresponding labels
     for id, repo in pairs(self.lab_repo) do
-- 
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