ext/gsm/: Cleanups, fix leaks.

Original commit message from CVS:
* ext/gsm/gstgsmdec.c: (gst_gsmdec_class_init), (gst_gsmdec_init),
(gst_gsmdec_finalize), (gst_gsmdec_sink_event), (gst_gsmdec_chain):
* ext/gsm/gstgsmdec.h:
* ext/gsm/gstgsmenc.c: (gst_gsmenc_class_init), (gst_gsmenc_init),
(gst_gsmenc_finalize), (gst_gsmenc_chain):
Cleanups, fix leaks.
Handle events and DISCONT.
Use adapter in the decoder.

1 files changed, 106 insertions, 18 deletions

diff --git a/ext/gsm/gstgsmdec.c b/ext/gsm/gstgsmdec.c
index 6475a779..a3ec28ed 100644
--- a/ext/gsm/gstgsmdec.c
+++ b/ext/gsm/gstgsmdec.c
@@ -54,7 +54,9 @@ enum
 static void gst_gsmdec_base_init (gpointer g_class);
 static void gst_gsmdec_class_init (GstGSMDec * klass);
 static void gst_gsmdec_init (GstGSMDec * gsmdec);
+static void gst_gsmdec_finalize (GObject * object);
 
+static gboolean gst_gsmdec_sink_event (GstPad * pad, GstEvent * event);
 static GstFlowReturn gst_gsmdec_chain (GstPad * pad, GstBuffer * buf);
 
 static GstElementClass *parent_class = NULL;
@@ -118,11 +120,15 @@ gst_gsmdec_base_init (gpointer g_class)
 static void
 gst_gsmdec_class_init (GstGSMDec * klass)
 {
+  GObjectClass *gobject_class;
   GstElementClass *gstelement_class;
 
+  gobject_class = (GObjectClass *) klass;
   gstelement_class = (GstElementClass *) klass;
 
-  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+  parent_class = g_type_class_peek_parent (klass);
+
+  gobject_class->finalize = gst_gsmdec_finalize;
 
   GST_DEBUG_CATEGORY_INIT (gsmdec_debug, "gsmdec", 0, "GSM Decoder");
 }
@@ -130,10 +136,13 @@ gst_gsmdec_class_init (GstGSMDec * klass)
 static void
 gst_gsmdec_init (GstGSMDec * gsmdec)
 {
+  gint use_wav49;
+
   /* create the sink and src pads */
   gsmdec->sinkpad =
       gst_pad_new_from_template (gst_static_pad_template_get
       (&gsmdec_sink_template), "sink");
+  gst_pad_set_event_function (gsmdec->sinkpad, gst_gsmdec_sink_event);
   gst_pad_set_chain_function (gsmdec->sinkpad, gst_gsmdec_chain);
   gst_element_add_pad (GST_ELEMENT (gsmdec), gsmdec->sinkpad);
 
@@ -143,59 +152,138 @@ gst_gsmdec_init (GstGSMDec * gsmdec)
   gst_element_add_pad (GST_ELEMENT (gsmdec), gsmdec->srcpad);
 
   gsmdec->state = gsm_create ();
-  // turn on WAN49 handling
-  gint use_wav49 = 0;
 
+  /* turn on WAV49 handling */
+  use_wav49 = 0;
   gsm_option (gsmdec->state, GSM_OPT_WAV49, &use_wav49);
 
+  gsmdec->adapter = gst_adapter_new ();
   gsmdec->next_of = 0;
   gsmdec->next_ts = 0;
 }
 
+static void
+gst_gsmdec_finalize (GObject * object)
+{
+  GstGSMDec *gsmdec;
+
+  gsmdec = GST_GSMDEC (object);
+
+  g_object_unref (gsmdec->adapter);
+  gsm_destroy (gsmdec->state);
+
+  G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static gboolean
+gst_gsmdec_sink_event (GstPad * pad, GstEvent * event)
+{
+  gboolean res;
+  GstGSMDec *gsmdec;
+
+  gsmdec = GST_GSMDEC (gst_pad_get_parent (pad));
+
+  switch (GST_EVENT_TYPE (event)) {
+    case GST_EVENT_FLUSH_START:
+      res = gst_pad_push_event (gsmdec->srcpad, event);
+      break;
+    case GST_EVENT_FLUSH_STOP:
+      gst_segment_init (&gsmdec->segment, GST_FORMAT_UNDEFINED);
+      res = gst_pad_push_event (gsmdec->srcpad, event);
+      break;
+    case GST_EVENT_NEWSEGMENT:
+    {
+      gboolean update;
+      GstFormat format;
+      gdouble rate;
+      gint64 start, stop, time;
+
+      gst_event_parse_new_segment (event, &update, &rate, &format, &start,
+          &stop, &time);
+
+      /* now configure the values */
+      gst_segment_set_newsegment (&gsmdec->segment, update,
+          rate, format, start, stop, time);
+
+      /* and forward */
+      res = gst_pad_push_event (gsmdec->srcpad, event);
+      break;
+    }
+    case GST_EVENT_EOS:
+    default:
+      res = gst_pad_push_event (gsmdec->srcpad, event);
+      break;
+  }
+
+  gst_object_unref (gsmdec);
+
+  return res;
+}
+
 static GstFlowReturn
 gst_gsmdec_chain (GstPad * pad, GstBuffer * buf)
 {
   GstGSMDec *gsmdec;
   gsm_byte *data;
   GstFlowReturn ret = GST_FLOW_OK;
+  GstClockTime timestamp;
 
   gsmdec = GST_GSMDEC (gst_pad_get_parent (pad));
 
-  // do we have enough bytes to read a header
-  if (GST_BUFFER_SIZE (buf) >= 33) {
+  timestamp = GST_BUFFER_TIMESTAMP (buf);
+
+  if (GST_BUFFER_FLAG_IS_SET (buf, GST_BUFFER_FLAG_DISCONT)) {
+    gst_adapter_clear (gsmdec->adapter);
+  }
+  gst_adapter_push (gsmdec->adapter, buf);
+
+  /* do we have enough bytes to read a header */
+  while (gst_adapter_available (gsmdec->adapter) >= 33) {
     GstBuffer *outbuf;
 
     outbuf = gst_buffer_new_and_alloc (160 * sizeof (gsm_signal));
-    // TODO take new segment in consideration, if not given restart
-    // timestamps at 0
-    if (GST_BUFFER_TIMESTAMP (buf) == GST_CLOCK_TIME_NONE) {
+
+    /* TODO take new segment in consideration, if not given restart
+     * timestamps at 0 */
+    if (timestamp == GST_CLOCK_TIME_NONE) {
       /* If we are not given any timestamp */
       GST_BUFFER_TIMESTAMP (outbuf) = gsmdec->next_ts;
-      gsmdec->next_ts += 20 * GST_MSECOND;
+      if (gsmdec->next_ts != GST_CLOCK_TIME_NONE)
+        gsmdec->next_ts += 20 * GST_MSECOND;
     }
 
     else {
-      /* But if you insist on giving us a timestamp, you are welcome. */
-      GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buf);
+      /* upstream gave a timestamp, use it. */
+      GST_BUFFER_TIMESTAMP (outbuf) = timestamp;
+      gsmdec->next_ts = timestamp + 20 * GST_MSECOND;
+      /* and make sure we interpollate in the next run */
+      timestamp = GST_CLOCK_TIME_NONE;
     }
 
     GST_BUFFER_DURATION (outbuf) = 20 * GST_MSECOND;
     GST_BUFFER_OFFSET (outbuf) = gsmdec->next_of;
-    GST_BUFFER_OFFSET_END (outbuf) = gsmdec->next_of + 160 - 1;
-    gst_buffer_set_caps (outbuf, gst_pad_get_caps (gsmdec->srcpad));
     gsmdec->next_of += 160;
+    GST_BUFFER_OFFSET_END (outbuf) = gsmdec->next_of;
 
-    data = (gsm_byte *) GST_BUFFER_DATA (buf);
-    gsm_decode (gsmdec->state, data, (gsm_signal *) GST_BUFFER_DATA (outbuf));
+    gst_buffer_set_caps (outbuf, GST_PAD_CAPS (gsmdec->srcpad));
 
-    GST_DEBUG ("Pushing buffer of size %d ts %" GST_TIME_FORMAT,
+    /* now encode frame into the output buffer */
+    data = (gsm_byte *) gst_adapter_peek (gsmdec->adapter, 33);
+    if (gsm_decode (gsmdec->state, data,
+            (gsm_signal *) GST_BUFFER_DATA (outbuf)) < 0) {
+      /* invalid frame */
+      GST_WARNING_OBJECT (gsmdec, "tried to decode an invalid frame, skipping");
+    }
+    gst_adapter_flush (gsmdec->adapter, 33);
+
+    GST_DEBUG_OBJECT (gsmdec, "Pushing buffer of size %d ts %" GST_TIME_FORMAT,
         GST_BUFFER_SIZE (outbuf),
         GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (outbuf)));
-    //gst_util_dump_mem (GST_BUFFER_DATA(outbuf), GST_BUFFER_SIZE (outbuf));
+
+    /* push */
     ret = gst_pad_push (gsmdec->srcpad, outbuf);
   }
 
-  gst_buffer_unref (buf);
   gst_object_unref (gsmdec);
 
   return ret;