From 3f742c01540b8bad940d66331d562082a63d975b Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Wed, 13 Jan 2016 12:05:48 +0800
Subject: support pure CPU reader

---
 htk_io/init.lua | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

(limited to 'htk_io')

diff --git a/htk_io/init.lua b/htk_io/init.lua
index b360b67..1cdabf1 100644
--- a/htk_io/init.lua
+++ b/htk_io/init.lua
@@ -6,6 +6,11 @@ function TNetReader:__init(global_conf, reader_conf)
     self.feat_id = reader_conf.id
     self.frm_ext = reader_conf.frm_ext
     self.gconf = global_conf
+    if self.gconf.use_cpu then
+        self.mat_type = self.gconf.mmat_type
+    else
+        self.mat_type = self.gconf.cumat_type
+    end
     self.debug = global_conf.debug
     if self.debug == nil then
         self.debug = false
@@ -31,12 +36,15 @@ function TNetReader:get_data()
     end
     local res = {}
     -- read HTK feature
-    local raw = self.gconf.cumat_type.new_from_host(self.feat_repo:cur_utter(self.debug))
+    local raw = self.feat_repo:cur_utter(self.debug)
+    if not self.gconf.use_cpu then
+        raw = self.gconf.cumat_type.new_from_host(raw)
+    end
     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)
+        local expanded = self.mat_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
@@ -53,8 +61,12 @@ function TNetReader:get_data()
         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)
+        if self.gconf.use_cpu then
+            feat_utter = rearranged
+        else
+            feat_utter = self.gconf.mmat_type(rearranged:nrow(), rearranged:ncol())
+            rearranged:copy_toh(feat_utter)
+        end
     end
     res[self.feat_id] = feat_utter
     -- add corresponding labels
-- 
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