ext/amrnb/: Further fancyfication.

Original commit message from CVS:
* ext/amrnb/amrnbdec.c: (gst_amrnbdec_init),
(gst_amrnbdec_setcaps), (gst_amrnbdec_chain),
(gst_amrnbdec_state_change):
* ext/amrnb/amrnbenc.c: (gst_amrnbenc_init),
(gst_amrnbenc_setcaps), (gst_amrnbenc_chain),
(gst_amrnbenc_state_change):
* ext/amrnb/amrnbenc.h:
* ext/amrnb/amrnbparse.c: (gst_amrnbparse_init),
(gst_amrnbparse_query):
Further fancyfication.
Use _take to get writable data from the adapter.
Precalc packet duration.
Handle disconts.
Forward _push to upstream.
Post error messages when something goes wrong.
Remove old code in amrnbparse.
Don't ignore query results from upstream.

ChangeLog

@@ -1,3 +1,23 @@
+2006-03-02  Wim Taymans  <wim@fluendo.com>
+
+	* ext/amrnb/amrnbdec.c: (gst_amrnbdec_init),
+	(gst_amrnbdec_setcaps), (gst_amrnbdec_chain),
+	(gst_amrnbdec_state_change):
+	* ext/amrnb/amrnbenc.c: (gst_amrnbenc_init),
+	(gst_amrnbenc_setcaps), (gst_amrnbenc_chain),
+	(gst_amrnbenc_state_change):
+	* ext/amrnb/amrnbenc.h:
+	* ext/amrnb/amrnbparse.c: (gst_amrnbparse_init),
+	(gst_amrnbparse_query):
+	Further fancyfication.
+	Use _take to get writable data from the adapter.
+	Precalc packet duration.
+	Handle disconts.
+	Forward _push to upstream.
+	Post error messages when something goes wrong.
+	Remove old code in amrnbparse.
+	Don't ignore query results from upstream.
+
 2006-03-02  Michael Smith  <msmith@fluendo.com>
 
 	* ext/amrnb/amrnbenc.c: (gst_amrnbenc_chain):

ext/amrnb/amrnbdec.c

@@ -133,10 +133,6 @@ gst_amrnbdec_init (GstAmrnbDec * amrnbdec)
 
   /* init rest */
   amrnbdec->handle = NULL;
-  amrnbdec->channels = 0;
-  amrnbdec->rate = 0;
-  amrnbdec->duration = 0;
-  amrnbdec->ts = -1;
 }
 
 static gboolean
@@ -214,6 +210,15 @@ gst_amrnbdec_chain (GstPad * pad, GstBuffer * buffer)
   if (amrnbdec->rate == 0 || amrnbdec->channels == 0)
     goto not_negotiated;
 
+  /* discontinuity, don't combine samples before and after the
+   * DISCONT */
+  if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
+    gst_adapter_clear (amrnbdec->adapter);
+    amrnbdec->ts = -1;
+  }
+
+  /* take latest timestamp, FIXME timestamp is the one of the
+   * first buffer in the adapter. */
   if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
     amrnbdec->ts = GST_BUFFER_TIMESTAMP (buffer);
 
@@ -238,14 +243,14 @@ gst_amrnbdec_chain (GstPad * pad, GstBuffer * buffer)
       break;
     /* the library seems to write into the source data, hence
      * the copy. */
-    data = (guint8 *) gst_adapter_take (amrnbdec->adapter, block);
+    data = gst_adapter_take (amrnbdec->adapter, block);
 
     /* get output */
     out = gst_buffer_new_and_alloc (160 * 2);
     GST_BUFFER_DURATION (out) = amrnbdec->duration;
     GST_BUFFER_TIMESTAMP (out) = amrnbdec->ts;
     if (amrnbdec->ts != -1)
-      amrnbdec->ts += GST_BUFFER_DURATION (out);
+      amrnbdec->ts += amrnbdec->duration;
     gst_buffer_set_caps (out, GST_PAD_CAPS (amrnbdec->srcpad));
 
     /* decode */

ext/amrnb/amrnbenc.c

@@ -132,9 +132,6 @@ gst_amrnbenc_init (GstAmrnbEnc * amrnbenc)
 
   /* init rest */
   amrnbenc->handle = NULL;
-  amrnbenc->channels = 0;
-  amrnbenc->rate = 0;
-  amrnbenc->ts = 0;
 }
 
 static void
@@ -178,6 +175,10 @@ gst_amrnbenc_setcaps (GstPad * pad, GstCaps * caps)
       "channels", G_TYPE_INT, amrnbenc->channels,
       "rate", G_TYPE_INT, amrnbenc->rate, NULL);
 
+  /* precalc duration as it's constant now */
+  amrnbenc->duration = gst_util_uint64_scale_int (160, GST_SECOND,
+      amrnbenc->rate * amrnbenc->channels);
+
   gst_pad_set_caps (amrnbenc->srcpad, copy);
   gst_caps_unref (copy);
 
@@ -197,12 +198,18 @@ gst_amrnbenc_chain (GstPad * pad, GstBuffer * buffer)
   if (amrnbenc->rate == 0 || amrnbenc->channels == 0)
     goto not_negotiated;
 
+  /* discontinuity clears adapter, FIXME, maybe we can set some
+   * encoder flag to mask the discont. */
+  if (GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
+    gst_adapter_clear (amrnbenc->adapter);
+    amrnbenc->ts = 0;
+  }
+
+  /* take latest timestamp, FIXME timestamp is the one of the
+   * first buffer in the adapter. */
   if (GST_BUFFER_TIMESTAMP_IS_VALID (buffer))
     amrnbenc->ts = GST_BUFFER_TIMESTAMP (buffer);
 
-  /* The AMR encoder actually writes into the source data buffers it gets */
-  buffer = gst_buffer_make_writable (buffer);
-
   ret = GST_FLOW_OK;
   gst_adapter_push (amrnbenc->adapter, buffer);
 
@@ -212,32 +219,34 @@ gst_amrnbenc_chain (GstPad * pad, GstBuffer * buffer)
     guint8 *data;
     gint outsize;
 
-    /* get output,  max size is 32 */
+    /* get output, max size is 32 */
     out = gst_buffer_new_and_alloc (32);
-    GST_BUFFER_DURATION (out) = GST_SECOND * 160 /
-        (amrnbenc->rate * amrnbenc->channels);
+    GST_BUFFER_DURATION (out) = amrnbenc->duration;
     GST_BUFFER_TIMESTAMP (out) = amrnbenc->ts;
-    amrnbenc->ts += GST_BUFFER_DURATION (out);
-    gst_buffer_set_caps (out, gst_pad_get_caps (amrnbenc->srcpad));
+    if (amrnbenc->ts != -1)
+      amrnbenc->ts += amrnbenc->duration;
+    gst_buffer_set_caps (out, GST_PAD_CAPS (amrnbenc->srcpad));
 
-    data = (guint8 *) gst_adapter_peek (amrnbenc->adapter, 320);
+    /* The AMR encoder actually writes into the source data buffers it gets */
+    data = gst_adapter_take (amrnbenc->adapter, 320);
 
     /* encode */
     outsize = Encoder_Interface_Encode (amrnbenc->handle, MR122, (short *) data,
         (guint8 *) GST_BUFFER_DATA (out), 0);
 
-    gst_adapter_flush (amrnbenc->adapter, 320);
-
     GST_BUFFER_SIZE (out) = outsize;
 
     /* play */
-    ret = gst_pad_push (amrnbenc->srcpad, out);
+    if ((ret = gst_pad_push (amrnbenc->srcpad, out)) != GST_FLOW_OK)
+      break;
   }
-
   return ret;
 
+  /* ERRORS */
 not_negotiated:
   {
+    GST_ELEMENT_ERROR (amrnbenc, STREAM, TYPE_NOT_FOUND,
+        (NULL), ("unknown type"));
     return GST_FLOW_NOT_NEGOTIATED;
   }
 }
@@ -256,6 +265,8 @@ gst_amrnbenc_state_change (GstElement * element, GstStateChange transition)
         return GST_STATE_CHANGE_FAILURE;
       break;
     case GST_STATE_CHANGE_READY_TO_PAUSED:
+      amrnbenc->rate = 0;
+      amrnbenc->channels = 0;
       amrnbenc->ts = 0;
       gst_adapter_clear (amrnbenc->adapter);
       break;

ext/amrnb/amrnbenc.h

@@ -54,6 +54,7 @@ struct _GstAmrnbEnc {
 
   /* input settings */
   gint channels, rate;
+  gint duration;
 };
 
 struct _GstAmrnbEncClass {

ext/amrnb/amrnbparse.c

@@ -129,9 +129,6 @@ gst_amrnbparse_init (GstAmrnbParse * amrnbparse)
       GST_DEBUG_FUNCPTR (gst_amrnbparse_chain));
   gst_pad_set_event_function (amrnbparse->sinkpad,
       GST_DEBUG_FUNCPTR (gst_amrnbparse_event));
-/*  gst_pad_set_loop_function (amrnbparse->sinkpad,
-      GST_DEBUG_FUNCPTR (gst_amrnbparse_loop));
-*/
   gst_pad_set_activate_function (amrnbparse->sinkpad,
       gst_amrnbparse_sink_activate);
   gst_element_add_pad (GST_ELEMENT (amrnbparse), amrnbparse->sinkpad);
@@ -225,7 +222,7 @@ gst_amrnbparse_query (GstPad * pad, GstQuery * query)
 
         pformat = GST_FORMAT_BYTES;
         res = gst_pad_query_position (peer, &pformat, &pcur);
-        res = gst_pad_query_duration (peer, &pformat, &ptot);
+        res &= gst_pad_query_duration (peer, &pformat, &ptot);
         gst_object_unref (GST_OBJECT (peer));
         if (res) {
           tot = amrnbparse->ts * ((gdouble) ptot / pcur);