From a74183ddb4ab8383bfe214b3745eb8a0a99ee47a Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Thu, 25 Jun 2015 12:56:45 +0800
Subject: let HTK I/O implementation be a single package

---
 htk_io/src/KaldiLib/Labels.h | 90 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 90 insertions(+)
 create mode 100644 htk_io/src/KaldiLib/Labels.h

(limited to 'htk_io/src/KaldiLib/Labels.h')

diff --git a/htk_io/src/KaldiLib/Labels.h b/htk_io/src/KaldiLib/Labels.h
new file mode 100644
index 0000000..409a080
--- /dev/null
+++ b/htk_io/src/KaldiLib/Labels.h
@@ -0,0 +1,90 @@
+#ifndef _LABELS_H_
+#define _LABELS_H_
+
+
+#include "Matrix.h"
+#include "MlfStream.h"
+#include "Features.h"
+
+#include <map>
+#include <iostream>
+
+namespace TNet {
+
+
+  class FeaCatPool;
+
+  /**
+   * Desired matrix generation object,
+   * supports background-reading and caching, however can be 
+   * used in foreground as well by GenDesiredMatrix()
+   */
+  class LabelRepository 
+  {
+    typedef std::map<std::string,size_t> TagToIdMap;
+
+    public:
+       enum MFormat {
+           MAP,
+           RAW
+       };
+
+      LabelRepository()
+        : _mpLabelStream(NULL), mpLabelStream(NULL), mpLabelDir(NULL), mpLabelExt(NULL), mGenDesiredMatrixTime(0), mIndexTime(0), mTrace(0) 
+      { }
+
+      ~LabelRepository()
+      { 
+        if(mTrace&4) {
+          std::cout << "[LabelRepository -- indexing:" << mIndexTime << "s"
+                       " genDesiredMatrix:" << mGenDesiredMatrixTime << "s]" << std::endl;
+        }
+        delete mpLabelStream;
+        delete _mpLabelStream;
+      }
+
+      /// Initialize the LabelRepository      
+      void Init(const char* pLabelMlfFile, const char* pOutputLabelMapFile, const char* pLabelDir, const char* pLabelExt);
+      void InitExt(const char* pLabelMlfFile, const char* fmt, const char* arg, const char* pLabelDir, const char* pLabelExt);
+      void InitMap(const char* pLabelMlfFile, const char* pOutputLabelMapFile, const char* pLabelDir, const char* pLabelExt);
+      void InitRaw(const char* pLabelMlfFile,const char* arg, const char* pLabelDir, const char* pLabelExt);
+
+      /// Set trace level
+      void Trace(int trace)
+      { mTrace = trace; }
+
+      /// Get desired matrix from labels
+      void GenDesiredMatrix(BfMatrix& rDesired, size_t nFrames, size_t sourceRate, const char* pFeatureLogical, bool has_vad = false);
+
+      void GenDesiredMatrixExt(std::vector<BfMatrix>& rDesired, size_t nFrames, size_t sourceRate, const char* pFeatureLogical);
+      void GenDesiredMatrixExtMap(std::vector<BfMatrix>& rDesired, size_t nFrames, size_t sourceRate, const char* pFeatureLogical);
+      void GenDesiredMatrixExtRaw(std::vector<BfMatrix>& rDesired, size_t nFrames, size_t sourceRate, const char* pFeatureLogical);
+      size_t getWidth() { return mLabelMap.size(); }
+      MFormat getFormat() { return mlf_fmt; }
+    private:
+      /// Prepare the state-label to state-id map
+      void ReadOutputLabelMap(const char* file);
+      
+    private:
+      // Streams and state-map
+      std::ifstream* _mpLabelStream; ///< Helper stream for Label stream
+      IMlfStream* mpLabelStream;     ///< Label stream
+      std::istringstream mGenDesiredMatrixStream; ///< Label file parsing stream
+     
+      const char* mpLabelDir;  ///< Label dir in MLF 
+      const char* mpLabelExt;  ///< Label ext in MLF
+      char mpLabelFile[4096];  ///< Buffer for filenames in MLF
+      
+      TagToIdMap mLabelMap; ///< Map of state tags to net output indices
+
+      double mGenDesiredMatrixTime;
+      float  mIndexTime;
+
+      int mTrace;
+      MFormat mlf_fmt;
+      size_t raw_dim;
+  };
+
+}//namespace
+
+#endif
-- 
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