From e4dad88de9b18d7a2cb966aa554fa872b7b29184 Mon Sep 17 00:00:00 2001
From: Aleksey Lim <alsroot@member.fsf.org>
Date: Mon, 09 Mar 2009 05:40:58 +0000
Subject: Reset espeak queues on GST_STATE_NULL

---
diff --git a/src/espeak.c b/src/espeak.c
index 504f52e..1639638 100644
--- a/src/espeak.c
+++ b/src/espeak.c
@@ -177,7 +177,7 @@ espeak_unref(Econtext *self)
 {
     GST_DEBUG("[%p]", self);
 
-    process_pop(self);
+    espeak_reset(self);
 
     gint i;
 
@@ -212,6 +212,8 @@ in_spinning(Econtext *self, Espin **spin, Text *text)
 
     while (!text_eot(text))
     {
+        text_unref(&(*spin)->text);
+
         text_chunk(text, &(*spin)->text, SPIN_FRAME_SIZE);
         g_atomic_int_set(&(*spin)->state, PROCESS);
         spinning(self->queue, spin);
@@ -438,8 +440,6 @@ espeak_out(Econtext *self, gsize size_to_play)
         if (g_atomic_int_get(&spin->state) == PLAY &&
                 spin->sound_offset >= spin_size)
         {
-            text_unref(&spin->text);
-
             GSList *text_link = slist_pop_link(&self->in_queue);
 
             if (text_link)
@@ -470,6 +470,21 @@ espeak_out(Econtext *self, gsize size_to_play)
     return NULL;
 }
 
+void
+espeak_reset(Econtext *self)
+{
+    slist_clean(&self->in_queue);
+    process_pop(self);
+
+    GstBuffer *buf;
+    while ((buf = espeak_out(self, SYNC_BUFFER_SIZE)) != NULL)
+        gst_buffer_unref(buf);
+
+    int i;
+    for (i = SPIN_QUEUE_SIZE; i--;)
+        g_atomic_int_set(&self->queue[i].state, IN);
+}
+
 // espeak ----------------------------------------------------------------------
 
 static gint
@@ -670,6 +685,7 @@ process_pop(Econtext *context)
     g_mutex_lock(process_lock);
 
     process_queue = g_slist_remove_link(process_queue, context->process_chunk);
+    context->state &= ~INPROCESS;
     g_cond_broadcast(process_cond);
 
     g_mutex_unlock(process_lock);
diff --git a/src/espeak.h b/src/espeak.h
index 70df9d1..a9082dd 100644
--- a/src/espeak.h
+++ b/src/espeak.h
@@ -40,5 +40,6 @@ void            espeak_set_track(Econtext*, guint);
 
 void            espeak_in(Econtext*, const gchar *str);
 GstBuffer*      espeak_out(Econtext*, gsize size_to_play);
+void            espeak_reset(Econtext*);
 
 #endif
diff --git a/src/gstespeak.c b/src/gstespeak.c
index 9e3f627..b460d19 100644
--- a/src/gstespeak.c
+++ b/src/gstespeak.c
@@ -267,10 +267,7 @@ gst_espeak_create(GstBaseSrc * self_, guint64 offset, guint size,
     if (*buf)
         return GST_FLOW_OK;
     else
-    {
-        //gst_element_set_state(GST_ELEMENT(self), GST_STATE_NULL);
         return GST_FLOW_UNEXPECTED;
-    }
 }
 
 static gboolean
@@ -280,8 +277,10 @@ gst_espeak_start(GstBaseSrc * self_)
 }
 
 static gboolean
-gst_espeak_stop(GstBaseSrc * self)
+gst_espeak_stop(GstBaseSrc * self_)
 {
+    GstEspeak *self = GST_ESPEAK(self_);
+    espeak_reset(self->speak);
     return TRUE;
 }
 
diff --git a/src/slist.h b/src/slist.h
index f7c7ae9..8c80fa8 100644
--- a/src/slist.h
+++ b/src/slist.h
@@ -32,13 +32,19 @@ slist_new(SList *self)
 }
 
 inline void
-slist_free(SList *self)
+slist_clean(SList *self)
 {
     GSList *i;
-
+    g_mutex_lock(self->lock);
     for (i = self->list; i; i = g_slist_next(i))
         text_unref(i->data);
+    g_mutex_unlock(self->lock);
+}
 
+inline void
+slist_free(SList *self)
+{
+    slist_clean(self);
     g_slist_free(self->list);
     g_mutex_free(self->lock);
 }
--
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