From c321703a7e71fce2fd2199ab7d2e0b1f4c155d04 Mon Sep 17 00:00:00 2001
From: Aleksey Lim <alsroot@member.fsf.org>
Date: Thu, 05 Feb 2009 10:26:58 +0000
Subject: Add lang(s) properties

---
diff --git a/src/espeak.c b/src/espeak.c
index 6ec8ffe..a6ca0f2 100644
--- a/src/espeak.c
+++ b/src/espeak.c
@@ -63,6 +63,7 @@ static unsigned char wave_hdr[44] = {
 pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
 static GOutputStream *buffer = NULL;
 static gint sample_rate = 0;
+static const espeak_VOICE **langs = NULL;
 
 static gint
 read_cb(short * wav, int numsamples, espeak_EVENT * events)
@@ -76,8 +77,8 @@ read_cb(short * wav, int numsamples, espeak_EVENT * events)
     return 0;
 }
 
-struct Espeak*
-espeak_new()
+static void
+init()
 {
     static volatile gsize initialized = 0;
 
@@ -87,8 +88,15 @@ espeak_new()
         ++initialized;
         sample_rate = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, 4096, NULL, 0);
         espeak_SetSynthCallback(read_cb);
+        langs = espeak_ListVoices(NULL);
     }
     pthread_mutex_unlock(&mutex);
+}
+
+struct Espeak*
+espeak_new()
+{
+    init();
 
     if (sample_rate == EE_INTERNAL_ERROR)
         return NULL;
@@ -99,8 +107,25 @@ espeak_new()
     return es;
 }
 
+gchar**
+espeak_langs()
+{
+    gsize count = 0;
+    const espeak_VOICE **i;
+    char **j, **out;
+
+    init();
+
+    for (i = langs; *i; ++i) ++count;
+    out = j = g_new0(gchar*, count); 
+    for (i = langs; *i; ++i) *j++ = g_strdup((*i)->name);
+
+    return out;
+}
+
 gboolean
-espeak_say(struct Espeak *es, const gchar *text, guint pitch, guint rate)
+espeak_say(struct Espeak *es, const gchar *text, const gchar *lang,
+        guint pitch, guint rate)
 {
     void write4bytes(GOutputStream *buffer, gint value)
     {
@@ -125,6 +150,7 @@ espeak_say(struct Espeak *es, const gchar *text, guint pitch, guint rate)
     buffer = es->buffer;
     espeak_SetParameter(espeakPITCH, pitch, 0);
     espeak_SetParameter(espeakRATE, rate, 0);
+    espeak_SetVoiceByName(lang);
     gint status = espeak_Synth(text, strlen(text), 0, POS_CHARACTER, 0,
                 espeakCHARS_AUTO, NULL, NULL);
     buffer = NULL;
diff --git a/src/espeak.h b/src/espeak.h
index 1c42df6..f7cc833 100644
--- a/src/espeak.h
+++ b/src/espeak.h
@@ -49,8 +49,9 @@
 struct Espeak;
 
 struct Espeak* espeak_new();
-gboolean espeak_say(struct Espeak*, const gchar *text, guint pitch,
-        guint rate);
+gchar** espeak_langs();
+gboolean espeak_say(struct Espeak*, const gchar *text, const gchar *lang,
+        guint pitch, guint rate);
 gpointer espeak_hear(struct Espeak*, goffset offset, guint *size);
 void espeak_unref(struct Espeak*);
 
diff --git a/src/gstespeak.c b/src/gstespeak.c
index 951890b..6857fce 100644
--- a/src/gstespeak.c
+++ b/src/gstespeak.c
@@ -74,7 +74,9 @@ enum
     PROP_0,
     PROP_TEXT,
     PROP_PITCH,
-    PROP_RATE
+    PROP_RATE,
+    PROP_LANG,
+    PROP_LANGS
 };
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE (
@@ -155,7 +157,14 @@ gst_espeak_class_init (GstEspeakClass * klass)
             g_param_spec_uint("rate", "Speed in words per minute",
                 "Speed in words per minute", 80, 390, 170,
                 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
+    g_object_class_install_property(gobject_class, PROP_LANG,
+            g_param_spec_string("lang", "Current lang",
+                "Current lang", "default",
+                G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+    g_object_class_install_property(gobject_class, PROP_LANGS,
+            g_param_spec_boxed("langs", "List of langs",
+                "List of langs", G_TYPE_STRV,
+                G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
 }
 
 /* initialize the new element
@@ -169,9 +178,11 @@ gst_espeak_init (GstEspeak * self,
 {
     self->text = NULL;
     self->uri = NULL;
-    self->speak = espeak_new();
     self->pitch = 50;
     self->rate = 170;
+    self->speak = espeak_new();
+    self->lang = g_strdup("default");
+    self->langs = espeak_langs();
 }
 
 static void
@@ -182,6 +193,8 @@ gst_espeak_finalize(GObject * self_)
     espeak_unref(self->speak);  self->speak = NULL;
     g_free(self->text);         self->text = NULL;
     g_free(self->uri);          self->uri = NULL;
+    g_free(self->lang);         self->lang = NULL;
+    g_strfreev(self->langs);    self->langs = NULL;
 
     G_OBJECT_CLASS(parent_class)->dispose(self_);
 }
@@ -237,6 +250,9 @@ gst_espeak_set_property (GObject *object, guint prop_id,
         case PROP_RATE:
             self->rate = g_value_get_uint(value);
             break;
+        case PROP_LANG:
+            self->lang = g_strdup(g_value_get_string(value));
+            break;
         default:
             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
             break;
@@ -259,6 +275,12 @@ gst_espeak_get_property (GObject * object, guint prop_id,
         case PROP_RATE:
             g_value_set_uint(value, self->rate);
             break;
+        case PROP_LANG:
+            g_value_set_string(value, self->lang);
+            break;
+        case PROP_LANGS:
+            g_value_set_boxed(value, self->langs);
+            break;
         default:
             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
             break;
@@ -286,7 +308,8 @@ gst_espeak_start (GstBaseSrc * self_)
     if (self->text == NULL || self->text[0] == 0)
         return FALSE;
 
-    return espeak_say(self->speak, self->text, self->pitch, self->rate);
+    return espeak_say(self->speak, self->text, self->lang, self->pitch,
+            self->rate);
 }
 
 static gboolean
diff --git a/src/gstespeak.h b/src/gstespeak.h
index 8e282a9..4ba0953 100644
--- a/src/gstespeak.h
+++ b/src/gstespeak.h
@@ -75,6 +75,8 @@ struct _GstEspeak
     gchar *uri;
     guint pitch;
     guint rate;
+    gchar *lang;
+    gchar **langs;
 };
 
 struct _GstEspeakClass 
--
cgit v0.9.1