Fix to set timestamp on buffer, it was tested with RTP G711 elements.

Original commit message from CVS:
Fix to set timestamp on buffer, it was tested with RTP G711 elements.

ChangeLog

@@ -1,3 +1,14 @@
+2005-10-27  Edgard Lima  Edgard Lima  <edgard.lima@indt.org.br>
+
+	* gst/law/alaw-encode.c: (gst_alawenc_init),
+        (alawenc_setcaps), (gst_alawenc_chain)
+	* gst/law/alaw-encode.h:
+	* gst/law/mulaw-encode.c: (gst_mulawenc_init),
+        (mulawenc_setcaps), (gst_mulawenc_chain)
+	* gst/law/mulaw-encode.h:
+	Set timestamp on buffer and it allows RTP G711 elements
+	work properly.
+
 2005-10-27  Wim Taymans  <wim@fluendo.com>
 
 	* sys/oss/gstosssrc.c: (gst_oss_src_prepare):

gst/law/alaw-encode.c

@@ -171,16 +171,13 @@ alawenc_setcaps (GstPad * pad, GstCaps * caps)
   GstALawEnc *alawenc;
   GstPad *otherpad;
   GstStructure *structure;
-  const GValue *rate, *chans;
   GstCaps *base_caps;
 
   alawenc = GST_ALAWENC (GST_PAD_PARENT (pad));
 
   structure = gst_caps_get_structure (caps, 0);
-  rate = gst_structure_get_value (structure, "rate");
+  gst_structure_get_int (structure, "channels", &alawenc->channels);
-  chans = gst_structure_get_value (structure, "channels");
+  gst_structure_get_int (structure, "rate", &alawenc->rate);
-  if (!rate || !chans)
-    return FALSE;
 
   if (pad == alawenc->sinkpad) {
     otherpad = alawenc->srcpad;
@@ -190,8 +187,9 @@ alawenc_setcaps (GstPad * pad, GstCaps * caps)
 
   base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
   structure = gst_caps_get_structure (base_caps, 0);
-  gst_structure_set_value (structure, "rate", rate);
+  gst_structure_set (structure, "rate", G_TYPE_INT, alawenc->rate, NULL);
-  gst_structure_set_value (structure, "channels", chans);
+  gst_structure_set (structure, "channels", G_TYPE_INT, alawenc->channels,
+      NULL);
 
   gst_pad_set_caps (otherpad, base_caps);
 
@@ -260,6 +258,11 @@ gst_alawenc_init (GstALawEnc * alawenc)
   gst_pad_set_setcaps_function (alawenc->srcpad, alawenc_setcaps);
   gst_pad_set_getcaps_function (alawenc->srcpad, alawenc_getcaps);
   gst_element_add_pad (GST_ELEMENT (alawenc), alawenc->srcpad);
+
+  /* init rest */
+  alawenc->channels = 0;
+  alawenc->rate = 0;
+  alawenc->ts = 0;
 }
 
 static GstFlowReturn
@@ -269,14 +272,23 @@ gst_alawenc_chain (GstPad * pad, GstBuffer * buffer)
   gint16 *linear_data;
   guint8 *alaw_data;
   GstBuffer *outbuf;
+  gint bufsize;
   gint i;
 
   alawenc = GST_ALAWENC (GST_OBJECT_PARENT (pad));
 
+  if (!alawenc->rate || !alawenc->channels)
+    goto not_negotiated;
+
   linear_data = (gint16 *) GST_BUFFER_DATA (buffer);
-  outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) / 2);
+  bufsize = GST_BUFFER_SIZE (buffer) / 2;
-  GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
+  outbuf = gst_buffer_new_and_alloc (bufsize);
-  GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
+
+  GST_BUFFER_DURATION (outbuf) = GST_SECOND * (bufsize) /
+      (alawenc->rate * alawenc->channels);
+  GST_BUFFER_TIMESTAMP (outbuf) = alawenc->ts;
+  alawenc->ts += GST_BUFFER_DURATION (outbuf);
+
   gst_buffer_set_caps (outbuf, GST_PAD_CAPS (alawenc->srcpad));
   alaw_data = (guint8 *) GST_BUFFER_DATA (outbuf);
 
@@ -289,4 +301,9 @@ gst_alawenc_chain (GstPad * pad, GstBuffer * buffer)
   gst_buffer_unref (buffer);
 
   return gst_pad_push (alawenc->srcpad, outbuf);
+
+not_negotiated:
+  {
+    return GST_FLOW_NOT_NEGOTIATED;
+  }
 }

gst/law/alaw-encode.h

@@ -49,6 +49,10 @@ struct _GstALawEnc {
   GstElement element;
 
   GstPad *sinkpad,*srcpad;
+  guint64 ts;
+
+  gint channels;
+  gint rate;
 
   /*MetaAudioRaw meta; */
 

gst/law/mulaw-encode.c

@@ -104,16 +104,13 @@ mulawenc_setcaps (GstPad * pad, GstCaps * caps)
   GstMuLawEnc *mulawenc;
   GstPad *otherpad;
   GstStructure *structure;
-  const GValue *rate, *chans;
   GstCaps *base_caps;
 
   mulawenc = GST_MULAWENC (gst_pad_get_parent (pad));
 
   structure = gst_caps_get_structure (caps, 0);
-  rate = gst_structure_get_value (structure, "rate");
+  gst_structure_get_int (structure, "channels", &mulawenc->channels);
-  chans = gst_structure_get_value (structure, "channels");
+  gst_structure_get_int (structure, "rate", &mulawenc->rate);
-  if (!rate || !chans)
-    return FALSE;
 
   if (pad == mulawenc->sinkpad) {
     otherpad = mulawenc->srcpad;
@@ -123,10 +120,12 @@ mulawenc_setcaps (GstPad * pad, GstCaps * caps)
   base_caps = gst_caps_copy (gst_pad_get_pad_template_caps (otherpad));
 
   structure = gst_caps_get_structure (base_caps, 0);
-  gst_structure_set_value (structure, "rate", rate);
+  gst_structure_set (structure, "rate", G_TYPE_INT, mulawenc->rate, NULL);
-  gst_structure_set_value (structure, "channels", chans);
+  gst_structure_set (structure, "channels", G_TYPE_INT, mulawenc->channels,
+      NULL);
 
   gst_pad_set_caps (otherpad, base_caps);
+
   gst_caps_unref (base_caps);
 
   return TRUE;
@@ -193,6 +192,11 @@ gst_mulawenc_init (GstMuLawEnc * mulawenc)
   gst_pad_set_setcaps_function (mulawenc->srcpad, mulawenc_setcaps);
   gst_pad_set_getcaps_function (mulawenc->srcpad, mulawenc_getcaps);
   gst_element_add_pad (GST_ELEMENT (mulawenc), mulawenc->srcpad);
+
+  /* init rest */
+  mulawenc->channels = 0;
+  mulawenc->rate = 0;
+  mulawenc->ts = 0;
 }
 
 static GstFlowReturn
@@ -202,13 +206,22 @@ gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer)
   gint16 *linear_data;
   guint8 *mulaw_data;
   GstBuffer *outbuf;
+  gint bufsize;
 
   mulawenc = GST_MULAWENC (GST_OBJECT_PARENT (pad));
 
+  if (!mulawenc->rate || !mulawenc->channels)
+    goto not_negotiated;
+
   linear_data = (gint16 *) GST_BUFFER_DATA (buffer);
-  outbuf = gst_buffer_new_and_alloc (GST_BUFFER_SIZE (buffer) / 2);
+  bufsize = GST_BUFFER_SIZE (buffer) / 2;
-  GST_BUFFER_TIMESTAMP (outbuf) = GST_BUFFER_TIMESTAMP (buffer);
+  outbuf = gst_buffer_new_and_alloc (bufsize);
-  GST_BUFFER_DURATION (outbuf) = GST_BUFFER_DURATION (buffer);
+
+  GST_BUFFER_DURATION (outbuf) = GST_SECOND * (bufsize) /
+      (mulawenc->rate * mulawenc->channels);
+  GST_BUFFER_TIMESTAMP (outbuf) = mulawenc->ts;
+  mulawenc->ts += GST_BUFFER_DURATION (outbuf);
+
   gst_buffer_set_caps (outbuf, GST_PAD_CAPS (mulawenc->srcpad));
   mulaw_data = (guint8 *) GST_BUFFER_DATA (outbuf);
 
@@ -217,4 +230,9 @@ gst_mulawenc_chain (GstPad * pad, GstBuffer * buffer)
   gst_buffer_unref (buffer);
 
   return gst_pad_push (mulawenc->srcpad, outbuf);
+
+not_negotiated:
+  {
+    return GST_FLOW_NOT_NEGOTIATED;
+  }
 }

gst/law/mulaw-encode.h

@@ -50,6 +50,10 @@ struct _GstMuLawEnc {
 
   GstPad *sinkpad,*srcpad;
 
+  guint64 ts;
+
+  gint channels;
+  gint rate;
   /*MetaAudioRaw meta; */
 
 };