1 files changed, 148 insertions, 0 deletions
diff --git a/htk_io/src/cwrapper.cpp b/htk_io/src/cwrapper.cpp
new file mode 100644
index 0000000..b7ce2d5
--- /dev/null
+++ b/htk_io/src/cwrapper.cpp
@@ -0,0 +1,148 @@
+#include "KaldiLib/Features.h"
+#include "KaldiLib/Labels.h"
+#include "KaldiLib/Common.h"
+#include "KaldiLib/UserInterface.h"
+#include <string>
+#define SNAME "TNET"
+
+extern "C" {
+#include "cwrapper.h"
+#include "string.h"
+#include "nerv/common.h"
+
+    extern Matrix *nerv_matrix_host_float_create(long nrow, long ncol, Status *status);
+
+    struct TNetFeatureRepo {
+        TNet::FeatureRepository feature_repo;
+        TNet::UserInterface ui;
+        bool swap_features;
+        int target_kind;
+        int deriv_order;
+        int* p_deriv_win_lenghts;
+        int start_frm_ext;
+        int end_frm_ext;
+        char* cmn_path;
+        char* cmn_file;
+        const char* cmn_mask;
+        char* cvn_path;
+        char* cvn_file;
+        const char* cvn_mask;
+        const char* cvg_file;
+        TNet::Matrix<float> feats_host; /* KaldiLib implementation */
+    };
+
+    TNetFeatureRepo *tnet_feature_repo_new(const char *p_script, const char *config, int context) {
+        TNetFeatureRepo *repo = new TNetFeatureRepo();
+        repo->ui.ReadConfig(config);
+        repo->swap_features = !repo->ui.GetBool(SNAME":NATURALREADORDER", TNet::IsBigEndian());
+        /* load defaults */
+        repo->target_kind = repo->ui.GetFeatureParams(&repo->deriv_order,
+                &repo->p_deriv_win_lenghts,
+                &repo->start_frm_ext, &repo->end_frm_ext,
+                &repo->cmn_path, &repo->cmn_file, &repo->cmn_mask,
+                &repo->cvn_path, &repo->cvn_file, &repo->cvn_mask,
+                &repo->cvg_file, SNAME":", 0);
+        repo->start_frm_ext = repo->end_frm_ext = context;
+        repo->feature_repo.Init(repo->swap_features,
+                repo->start_frm_ext, repo->end_frm_ext, repo->target_kind,
+                repo->deriv_order, repo->p_deriv_win_lenghts,
+                repo->cmn_path, repo->cmn_mask,
+                repo->cvn_path, repo->cvn_mask, repo->cvg_file);
+        repo->feature_repo.AddFileList(p_script);
+        repo->feature_repo.Rewind();
+        return repo;
+    }
+
+    Matrix *tnet_feature_repo_read_utterance(TNetFeatureRepo *repo, lua_State *L, int debug) {
+        Matrix *mat;                    /* nerv implementation */
+        repo->feature_repo.ReadFullMatrix(repo->feats_host);
+        std::string utter_str = repo->feature_repo.Current().Logical();
+        repo->feats_host.CheckData(utter_str);
+        int n = repo->feats_host.Rows();
+        int m = repo->feats_host.Cols();
+        Status status;
+        mat = nerv_matrix_host_float_create(n, m, &status);
+        NERV_LUA_CHECK_STATUS(L, status);
+        size_t stride = mat->stride;
+        if (debug)
+            fprintf(stderr, "[tnet] feature: %s %d %d\n", utter_str.c_str(), n, m);
+        for (int i = 0; i < n; i++)
+        {
+            float *row = repo->feats_host.pRowData(i);
+            float *nerv_row = (float *)((char *)mat->data.f + i * stride);
+            /* use memmove to copy the row, since KaldiLib uses compact storage */
+            memmove(nerv_row, row, sizeof(float) * m);
+        }
+        return mat;
+    }
+
+    void tnet_feature_repo_next(TNetFeatureRepo *repo) {
+        repo->feature_repo.MoveNext();
+    }
+
+    int tnet_feature_repo_is_end(TNetFeatureRepo *repo) {
+        return repo->feature_repo.EndOfList();
+    }
+
+    size_t tnet_feature_repo_current_samplerate(TNetFeatureRepo *repo) {
+        return repo->feature_repo.CurrentHeader().mSamplePeriod;
+    }
+
+    const char *tnet_feature_repo_current_tag(TNetFeatureRepo *repo) {
+        return repo->feature_repo.Current().Logical().c_str();
+    }
+
+    void tnet_feature_repo_destroy(TNetFeatureRepo *repo) {
+        if (repo->cmn_mask)
+            free(repo->cmn_path);
+        if (repo->cvn_mask)
+            free(repo->cvn_path);
+        free(repo->p_deriv_win_lenghts);
+        delete repo;
+    }
+
+    struct TNetLabelRepo {
+        TNet::LabelRepository label_repo;
+    };
+
+    TNetLabelRepo *tnet_label_repo_new(const char *mlf, const char *fmt,
+                                        const char *fmt_arg, const char *dir,
+                                        const char *ext) {
+        TNetLabelRepo *repo = new TNetLabelRepo();
+        repo->label_repo.InitExt(mlf, fmt, fmt_arg, dir, ext);
+        /* repo->label_repo.Init(mlf, fmt_arg, dir, ext); */
+        return repo;
+    }
+
+    Matrix *tnet_label_repo_read_utterance(TNetLabelRepo *repo,
+                                            size_t frames,
+                                            size_t sample_rate,
+                                            const char *tag,
+                                            lua_State *L,
+                                            int debug) {
+        std::vector<TNet::Matrix<float> >  labs_hosts; /* KaldiLib implementation */
+        Matrix *mat;
+        repo->label_repo.GenDesiredMatrixExt(labs_hosts, frames,
+                                            sample_rate, tag);
+        int n = labs_hosts[0].Rows();
+        int m = labs_hosts[0].Cols();
+        Status status;
+        mat = nerv_matrix_host_float_create(n, m, &status);
+        NERV_LUA_CHECK_STATUS(L, status);
+        size_t stride = mat->stride;
+        if (debug)
+            fprintf(stderr, "[tnet] label: %s %d %d\n", tag, n, m);
+        for (int i = 0; i < n; i++)
+        {
+            float *row = labs_hosts[0].pRowData(i);
+            float *nerv_row = (float *)((char *)mat->data.f + i * stride);
+            /* use memmove to copy the row, since KaldiLib uses compact storage */
+            memmove(nerv_row, row, sizeof(float) * m);
+        }
+        return mat;
+    }
+
+    void tnet_label_repo_destroy(TNetLabelRepo *repo) {
+        delete repo;
+    }
+}