Initial commit: FunASR Speech Recognition Toolkit

Add complete FunASR codebase including models, runtime, and documentation.
2026-07-09 22:38:58 +08:00
commit 6116b1f3c6
3683 changed files with 990984 additions and 0 deletions
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+// fstbin/fstmakecontextsyms.cc
+
+// Copyright 2009-2011 Microsoft Corporation
+
+// See ../../COPYING for clarification regarding multiple authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//  http://www.apache.org/licenses/LICENSE-2.0
+//
+// THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
+// WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
+// MERCHANTABLITY OR NON-INFRINGEMENT.
+// See the Apache 2 License for the specific language governing permissions and
+// limitations under the License.
+
+#include "tree/context-dep.h"
+#include "util/common-utils.h"
+#include "fst/fstlib.h"
+#include "fstext/fstext-utils.h"
+#include "fstext/context-fst.h"
+
+
+/*
+    Test for this and makecontextfst:
+    mkdir -p ~/tmpdir
+    pushd ~/tmpdir
+    (echo "<eps> 0"; echo "a 1"; echo "b 2"; echo "#0 3"; echo "#1 4"; echo "#$ 5" ) > phones.txt
+    ( echo 3; echo 4 ) > disambig.list
+    fstmakecontextfst --read-disambig-syms=disambig.list <(grep -v '#' phones.txt)  5 ilabels.int > C.fst
+    fstmakecontextsyms phones.txt ilabels.int > context_syms.txt
+    fstprint  --isymbols=context_syms.txt --osymbols=phones.txt C.fst > C.txt
+
+    fstrandgen C.fst | fstprint --isymbols=context_syms.txt --osymbols=phones.txt
+
+    Example output:
+
+  fstrandgen C.fst | fstprint --isymbols=context_syms.txt --osymbols=phones.txt
+0	1	#-1	b
+1	2	<eps>/b/<eps>	#$
+2	3	#1	#1
+3	4	#0	#0
+4	5	#0	#0
+5	6	#0	#0
+6	7	#0	#0
+7	8	#0	#0
+8	9	#1	#1
+9
+*/
+
+
+int main(int argc, char *argv[]) {
+  try {
+    using namespace kaldi;
+    using namespace fst;
+    typedef fst::StdArc::Label Label;
+    const char *usage =  "Create input symbols for CLG\n"
+        "Usage: fstmakecontextsyms phones-symtab ilabels_input_file [output-symtab.txt]\n"
+        "E.g.:  fstmakecontextsyms  phones.txt ilabels.sym > context_symbols.txt\n";
+
+    ParseOptions po(usage);
+
+    std::string disambig_list_file = "",
+        phone_separator = "/",
+        initial_disambig = "#-1";
+
+    po.Register("phone-separator", &phone_separator,
+                "Separator for phones in phone-in-context symbols.");
+    po.Register("initial-disambig", &initial_disambig,
+                "Name for special disambiguation symbol that occurs at start "
+                "of context-dependent phone sequences");
+
+    po.Read(argc, argv);
+
+    if (po.NumArgs() < 2 || po.NumArgs() > 3) {
+      po.PrintUsage();
+      exit(1);
+    }
+
+    std::string phones_symtab_filename = po.GetArg(1),
+        ilabel_info_filename = po.GetArg(2),
+        clg_symtab_filename = po.GetOptArg(3);
+
+    std::vector<std::vector<kaldi::int32> > ilabel_info;
+    {
+      bool binary;
+      Input ki(ilabel_info_filename, &binary);
+      ReadILabelInfo(ki.Stream(),
+                     binary, &ilabel_info);
+    }
+
+    fst::SymbolTable *phones_symtab = NULL;
+    {  // read phone symbol table.
+      std::ifstream is(phones_symtab_filename.c_str());
+      phones_symtab = fst::SymbolTable::ReadText(is, phones_symtab_filename);
+      if (!phones_symtab) KALDI_ERR << "Could not read phones symbol-table file "<<phones_symtab_filename;
+    }
+
+    fst::SymbolTable *clg_symtab =
+        CreateILabelInfoSymbolTable(ilabel_info,
+                                    *phones_symtab,
+                                    phone_separator,
+                                    initial_disambig);
+
+    if (clg_symtab_filename == "") {
+      if (!clg_symtab->WriteText(std::cout))
+        KALDI_ERR << "Cannot write symbol table to standard output.";
+    } else {
+      if (!clg_symtab->WriteText(clg_symtab_filename))
+        KALDI_ERR << "Cannot open symbol table file "<<clg_symtab_filename<<" for writing.";
+    }
+    delete clg_symtab;
+    delete phones_symtab;
+    return 0;
+  } catch(const std::exception &e) {
+    std::cerr << e.what();
+    return -1;
+  }
+}