let HTK I/O implementation be a single package

1 files changed, 118 insertions, 0 deletions

diff --git a/htk_io/src/init.c b/htk_io/src/init.c
new file mode 100644
index 0000000..8a1ec3b
--- /dev/null
+++ b/htk_io/src/init.c
@@ -0,0 +1,118 @@
+#include "nerv/common.h"
+#include "cwrapper.h"
+#include <stdio.h>
+
+const char *nerv_tnet_feat_repo_tname = "nerv.TNetFeatureRepo";
+const char *nerv_tnet_label_repo_tname = "nerv.TNetLabelRepo";
+const char *nerv_matrix_host_float_tname = "nerv.MMatrixFloat";
+
+static int feat_repo_new(lua_State *L) {
+    const char *scp_file = luaL_checkstring(L, 1);
+    const char *conf = luaL_checkstring(L, 2);
+    int frm_ext = luaL_checkinteger(L, 3);
+    TNetFeatureRepo *repo = tnet_feature_repo_new(scp_file, conf, frm_ext);
+    luaT_pushudata(L, repo, nerv_tnet_feat_repo_tname);
+    return 1;
+}
+
+static int feat_repo_destroy(lua_State *L) {
+    TNetFeatureRepo *repo = luaT_checkudata(L, 1, nerv_tnet_feat_repo_tname);
+    tnet_feature_repo_destroy(repo);
+    return 0;
+}
+
+static int feat_repo_current_tag(lua_State *L) {
+    TNetFeatureRepo *repo = luaT_checkudata(L, 1, nerv_tnet_feat_repo_tname);
+    lua_pushstring(L, tnet_feature_repo_current_tag(repo));
+    return 1;
+}
+
+static int feat_repo_current_utterance(lua_State *L) {
+    TNetFeatureRepo *repo = luaT_checkudata(L, 1, nerv_tnet_feat_repo_tname);
+    int debug;
+    if (!lua_isboolean(L, 2))
+        nerv_error(L, "debug flag should be a boolean");
+    debug = lua_toboolean(L, 2);
+    Matrix *utter = tnet_feature_repo_read_utterance(repo, L, debug);
+    luaT_pushudata(L, utter, nerv_matrix_host_float_tname);
+    return 1;
+}
+
+static int feat_repo_next(lua_State *L) {
+    TNetFeatureRepo *repo = luaT_checkudata(L, 1, nerv_tnet_feat_repo_tname);
+    tnet_feature_repo_next(repo);
+    return 0;
+}
+
+static int feat_repo_is_end(lua_State *L) {
+    TNetFeatureRepo *repo = luaT_checkudata(L, 1, nerv_tnet_feat_repo_tname);
+    lua_pushboolean(L, tnet_feature_repo_is_end(repo));
+    return 1;
+}
+
+static const luaL_Reg feat_repo_methods[] = {
+    {"cur_utter", feat_repo_current_utterance},
+    {"cur_tag", feat_repo_current_tag},
+    {"next", feat_repo_next},
+    {"is_end", feat_repo_is_end},
+    {NULL, NULL}
+};
+
+static int label_repo_new(lua_State *L) {
+    const char *mlf_file = luaL_checkstring(L, 1);
+    const char *fmt = luaL_checkstring(L, 2);
+    const char *arg = luaL_checkstring(L, 3);
+    const char *dir = luaL_checkstring(L, 4);
+    const char *ext = luaL_checkstring(L, 5);
+    TNetLabelRepo *repo = tnet_label_repo_new(
+                                mlf_file, fmt, arg,
+                                dir, ext);
+    luaT_pushudata(L, repo, nerv_tnet_label_repo_tname);
+    return 1;
+}
+
+static int label_repo_read_utterance(lua_State *L) {
+    TNetLabelRepo *repo = luaT_checkudata(L, 1, nerv_tnet_label_repo_tname);
+    TNetFeatureRepo *feat_repo = luaT_checkudata(L, 2, nerv_tnet_feat_repo_tname);
+    size_t frames = luaL_checkinteger(L, 3);
+    int debug;
+    if (!lua_isboolean(L, 4))
+        nerv_error(L, "debug flag should be a boolean");
+    debug = lua_toboolean(L, 4);
+    Matrix *utter = tnet_label_repo_read_utterance(repo,
+                        frames,
+                        tnet_feature_repo_current_samplerate(feat_repo),
+                        tnet_feature_repo_current_tag(feat_repo), L, debug);
+    luaT_pushudata(L, utter, nerv_matrix_host_float_tname);
+    return 1;
+}
+
+static int label_repo_destroy(lua_State *L) {
+    TNetLabelRepo *repo = luaT_checkudata(L, 1, nerv_tnet_label_repo_tname);
+    tnet_label_repo_destroy(repo);
+    return 0;
+}
+
+static const luaL_Reg label_repo_methods[] = {
+    {"get_utter", label_repo_read_utterance},
+    {NULL, NULL}
+};
+
+static void feat_repo_init(lua_State *L) {
+    luaT_newmetatable(L, nerv_tnet_feat_repo_tname, NULL,
+                        feat_repo_new, feat_repo_destroy, NULL);
+    luaL_register(L, NULL, feat_repo_methods);
+    lua_pop(L, 1);
+}
+
+static void label_repo_init(lua_State *L) {
+    luaT_newmetatable(L, nerv_tnet_label_repo_tname, NULL,
+                        label_repo_new, label_repo_destroy, NULL);
+    luaL_register(L, NULL, label_repo_methods);
+    lua_pop(L, 1);
+}
+
+void tnet_io_init(lua_State *L) {
+    feat_repo_init(L);
+    label_repo_init(L);
+}