From 235004c0c3eab7f26340d7207d4c428bfce19270 Mon Sep 17 00:00:00 2001
From: Aleksey Lim <alsroot@member.fsf.org>
Date: Thu, 05 Feb 2009 09:17:30 +0000
Subject: Add pitch&rate properties

---
diff --git a/src/espeak.c b/src/espeak.c
index 4594784..273f228 100644
--- a/src/espeak.c
+++ b/src/espeak.c
@@ -61,7 +61,7 @@ static unsigned char wave_hdr[44] = {
 
 static GMutex *mutex = NULL;
 static GOutputStream *buffer = NULL;
-static gint rate = 0;
+static gint sample_rate = 0;
 
 static gint
 read_cb(short * wav, int numsamples, espeak_EVENT * events)
@@ -82,12 +82,12 @@ espeak_new()
 
     if (g_once_init_enter(&initialized))
     {
-        rate = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, 4096, NULL, 0);
+        sample_rate = espeak_Initialize(AUDIO_OUTPUT_SYNCHRONOUS, 4096, NULL, 0);
         espeak_SetSynthCallback(read_cb);
         mutex = g_mutex_new();
     }
 
-    if (rate == EE_INTERNAL_ERROR)
+    if (sample_rate == EE_INTERNAL_ERROR)
         return NULL;
 
     struct Espeak *es = g_new(struct Espeak, 1);
@@ -97,7 +97,7 @@ espeak_new()
 }
 
 gboolean
-espeak_say(struct Espeak *es, const gchar *text)
+espeak_say(struct Espeak *es, const gchar *text, guint pitch, guint rate)
 {
     void write4bytes(GOutputStream *buffer, gint value)
     {
@@ -114,12 +114,14 @@ espeak_say(struct Espeak *es, const gchar *text)
     g_seekable_seek((GSeekable*)es->buffer, 0, G_SEEK_SET, NULL, NULL);
 
     g_output_stream_write(es->buffer, wave_hdr, 24, NULL, NULL);
-    write4bytes(es->buffer, rate);
-    write4bytes(es->buffer, rate * 2);
+    write4bytes(es->buffer, sample_rate);
+    write4bytes(es->buffer, sample_rate * 2);
     g_output_stream_write(es->buffer, wave_hdr+32, 12, NULL, NULL);
 
     g_mutex_lock(mutex);
     buffer = es->buffer;
+    espeak_SetParameter(espeakPITCH, pitch, 0);
+    espeak_SetParameter(espeakRATE, rate, 0);
     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 612e496..1c42df6 100644
--- a/src/espeak.h
+++ b/src/espeak.h
@@ -49,7 +49,8 @@
 struct Espeak;
 
 struct Espeak* espeak_new();
-gboolean espeak_say(struct Espeak*, const gchar *text);
+gboolean espeak_say(struct Espeak*, const gchar *text, 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 cd357a1..951890b 100644
--- a/src/gstespeak.c
+++ b/src/gstespeak.c
@@ -71,9 +71,10 @@ GST_DEBUG_CATEGORY_STATIC (gst_espeak_debug);
 
 enum
 {
-  PROP_0,
-  PROP_TEXT,
-  PROP_SILENT
+    PROP_0,
+    PROP_TEXT,
+    PROP_PITCH,
+    PROP_RATE
 };
 
 static GstStaticPadTemplate src_factory = GST_STATIC_PAD_TEMPLATE (
@@ -146,10 +147,15 @@ gst_espeak_class_init (GstEspeakClass * klass)
             g_param_spec_string("text", "Text",
                 "Text to pronounce", NULL,
                 G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-    g_object_class_install_property (gobject_class, PROP_SILENT,
-            g_param_spec_boolean("silent", "Silent",
-                "Produce verbose output ?",
-                FALSE, G_PARAM_READWRITE));
+    g_object_class_install_property(gobject_class, PROP_PITCH,
+            g_param_spec_uint("pitch", "Pitch adjustment",
+                "Pitch adjustment", 0, 99, 50,
+                G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
+    g_object_class_install_property(gobject_class, PROP_RATE,
+            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));
+
 }
 
 /* initialize the new element
@@ -164,6 +170,8 @@ gst_espeak_init (GstEspeak * self,
     self->text = NULL;
     self->uri = NULL;
     self->speak = espeak_new();
+    self->pitch = 50;
+    self->rate = 170;
 }
 
 static void
@@ -223,8 +231,11 @@ gst_espeak_set_property (GObject *object, guint prop_id,
         case PROP_TEXT:
             gst_espeak_set_text(self, g_value_get_string(value));
             break;
-        case PROP_SILENT:
-            self->silent = g_value_get_boolean (value);
+        case PROP_PITCH:
+            self->pitch = g_value_get_uint(value);
+            break;
+        case PROP_RATE:
+            self->rate = g_value_get_uint(value);
             break;
         default:
             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -242,8 +253,11 @@ gst_espeak_get_property (GObject * object, guint prop_id,
         case PROP_TEXT:
             g_value_set_string(value, self->text);
             break;
-        case PROP_SILENT:
-            g_value_set_boolean (value, self->silent);
+        case PROP_PITCH:
+            g_value_set_uint(value, self->pitch);
+            break;
+        case PROP_RATE:
+            g_value_set_uint(value, self->rate);
             break;
         default:
             G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
@@ -272,7 +286,7 @@ gst_espeak_start (GstBaseSrc * self_)
     if (self->text == NULL || self->text[0] == 0)
         return FALSE;
 
-    return espeak_say(self->speak, self->text);
+    return espeak_say(self->speak, self->text, self->pitch, self->rate);
 }
 
 static gboolean
diff --git a/src/gstespeak.h b/src/gstespeak.h
index f7f2884..8e282a9 100644
--- a/src/gstespeak.h
+++ b/src/gstespeak.h
@@ -73,7 +73,8 @@ struct _GstEspeak
     struct Espeak *speak;
     gchar *text;
     gchar *uri;
-    gboolean silent;
+    guint pitch;
+    guint rate;
 };
 
 struct _GstEspeakClass 
--
cgit v0.9.1