Apply patch from Jeffrey C. Ollie. Fixes rate (now always 8kHz) and adds timestamps

Original commit message from CVS:
Apply patch from Jeffrey C. Ollie. Fixes rate (now always 8kHz) and
adds timestamps

1 files changed, 78 insertions, 112 deletions

diff --git a/ext/gsm/gstgsmdec.c b/ext/gsm/gstgsmdec.c
index 26b6d02c..c44067b3 100644
--- a/ext/gsm/gstgsmdec.c
+++ b/ext/gsm/gstgsmdec.c
@@ -51,8 +51,6 @@ static void gst_gsmdec_class_init (GstGSMDec * klass);
 static void gst_gsmdec_init (GstGSMDec * gsmdec);
 
 static void gst_gsmdec_chain (GstPad * pad, GstData * _data);
-static GstCaps *gst_gsmdec_getcaps (GstPad * pad);
-static GstPadLinkReturn gst_gsmdec_link (GstPad * pad, const GstCaps * caps);
 
 static GstElementClass *parent_class = NULL;
 
@@ -86,8 +84,7 @@ static GstStaticPadTemplate gsmdec_sink_template =
 GST_STATIC_PAD_TEMPLATE ("sink",
     GST_PAD_SINK,
     GST_PAD_ALWAYS,
-    GST_STATIC_CAPS ("audio/x-gsm, "
-        "rate = (int) [ 1000, 48000 ], " "channels = (int) 1")
+    GST_STATIC_CAPS ("audio/x-gsm, " "rate = (int) 8000, " "channels = (int) 1")
     );
 
 static GstStaticPadTemplate gsmdec_src_template =
@@ -98,8 +95,7 @@ GST_STATIC_PAD_TEMPLATE ("src",
         "endianness = (int) BYTE_ORDER, "
         "signed = (boolean) true, "
         "width = (int) 16, "
-        "depth = (int) 16, "
-        "rate = (int) [ 1000, 48000 ], " "channels = (int) 1")
+        "depth = (int) 16, " "rate = (int) 8000, " "channels = (int) 1")
     );
 
 static void
@@ -134,132 +130,102 @@ gst_gsmdec_init (GstGSMDec * gsmdec)
       gst_pad_new_from_template (gst_static_pad_template_get
       (&gsmdec_sink_template), "sink");
   gst_pad_set_chain_function (gsmdec->sinkpad, gst_gsmdec_chain);
-  gst_pad_set_getcaps_function (gsmdec->sinkpad, gst_gsmdec_getcaps);
-  gst_pad_set_link_function (gsmdec->sinkpad, gst_gsmdec_link);
   gst_element_add_pad (GST_ELEMENT (gsmdec), gsmdec->sinkpad);
 
   gsmdec->srcpad =
       gst_pad_new_from_template (gst_static_pad_template_get
       (&gsmdec_src_template), "src");
-  gst_pad_set_getcaps_function (gsmdec->srcpad, gst_gsmdec_getcaps);
-  gst_pad_set_link_function (gsmdec->srcpad, gst_gsmdec_link);
   gst_element_add_pad (GST_ELEMENT (gsmdec), gsmdec->srcpad);
 
   gsmdec->state = gsm_create ();
   gsmdec->bufsize = 0;
-}
-
-static GstCaps *
-gst_gsmdec_getcaps (GstPad * pad)
-{
-  GstGSMDec *gsmdec = GST_GSMDEC (gst_pad_get_parent (pad));
-  const GValue *rate_value;
-  GstPad *otherpad;
-  GstCaps *othercaps, *basecaps;
-
-  if (pad == gsmdec->srcpad) {
-    otherpad = gsmdec->sinkpad;
-    basecaps = gst_caps_new_simple ("audio/x-raw-int",
-        "endianness", G_TYPE_INT, G_BYTE_ORDER,
-        "signed", G_TYPE_BOOLEAN, TRUE,
-        "width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16, NULL);
-  } else {
-    otherpad = gsmdec->srcpad;
-    basecaps = gst_caps_new_simple ("audio/x-gsm", NULL);
-  }
-
-  othercaps = gst_pad_get_allowed_caps (otherpad);
-  rate_value = gst_structure_get_value (gst_caps_get_structure (othercaps,
-          0), "rate");
-  gst_structure_set_value (gst_caps_get_structure (basecaps, 0), "rate",
-      rate_value);
-  gst_caps_set_simple (basecaps, "channels", G_TYPE_INT, 1, NULL);
-
-  return basecaps;
-}
-
-static GstPadLinkReturn
-gst_gsmdec_link (GstPad * pad, const GstCaps * caps)
-{
-  GstGSMDec *gsmdec = GST_GSMDEC (gst_pad_get_parent (pad));
-  GstPad *otherpad;
-  GstCaps *othercaps;
-  gint rate;
-  GstStructure *structure;
-
-  structure = gst_caps_get_structure (caps, 0);
-  gst_structure_get_int (structure, "rate", &rate);
-
-  if (pad == gsmdec->sinkpad) {
-    otherpad = gsmdec->srcpad;
-    othercaps = gst_caps_new_simple ("audio/x-raw-int",
-        "endianness", G_TYPE_INT, G_BYTE_ORDER,
-        "signed", G_TYPE_BOOLEAN, TRUE,
-        "width", G_TYPE_INT, 16, "depth", G_TYPE_INT, 16, NULL);
-  } else {
-    otherpad = gsmdec->sinkpad;
-    othercaps = gst_caps_new_simple ("audio/x-gsm", NULL);
-  }
-
-  gst_caps_set_simple (othercaps,
-      "rate", G_TYPE_INT, rate, "channels", G_TYPE_INT, 1, NULL);
-
-  return gst_pad_try_set_caps (otherpad, othercaps);
+  gsmdec->next_ts = 0;
+  gsmdec->next_of = 0;
 }
 
 static void
 gst_gsmdec_chain (GstPad * pad, GstData * _data)
 {
-  GstBuffer *buf = GST_BUFFER (_data);
   GstGSMDec *gsmdec;
-  gsm_byte *data;
-  guint size;
 
   g_return_if_fail (pad != NULL);
   g_return_if_fail (GST_IS_PAD (pad));
-  g_return_if_fail (buf != NULL);
-  /*g_return_if_fail(GST_IS_BUFFER(buf)); */
+  g_return_if_fail (_data != NULL);
 
   gsmdec = GST_GSMDEC (gst_pad_get_parent (pad));
 
-  data = (gsm_byte *) GST_BUFFER_DATA (buf);
-  size = GST_BUFFER_SIZE (buf);
-
-  if (gsmdec->bufsize && (gsmdec->bufsize + size >= 33)) {
-    GstBuffer *outbuf;
-
-    memcpy (gsmdec->buffer + gsmdec->bufsize, data,
-        (33 - gsmdec->bufsize) * sizeof (gsm_byte));
-
-    outbuf = gst_buffer_new ();
-    GST_BUFFER_DATA (outbuf) = g_malloc (160 * sizeof (gsm_signal));
-    GST_BUFFER_SIZE (outbuf) = 160 * sizeof (gsm_signal);
-
-    gsm_decode (gsmdec->state, gsmdec->buffer,
-        (gsm_signal *) GST_BUFFER_DATA (outbuf));
-
-    gst_pad_push (gsmdec->srcpad, GST_DATA (outbuf));
-
-    size -= (33 - gsmdec->bufsize);
-    data += (33 - gsmdec->bufsize);
-    gsmdec->bufsize = 0;
-  }
-
-  while (size >= 33) {
-    GstBuffer *outbuf;
-
-    outbuf = gst_buffer_new_and_alloc (160 * sizeof (gsm_signal));
-    gsm_decode (gsmdec->state, data, (gsm_signal *) GST_BUFFER_DATA (outbuf));
-    gst_pad_push (gsmdec->srcpad, GST_DATA (outbuf));
-
-    size -= 33;
-    data += 33;
+  if (GST_IS_EVENT (_data)) {
+    GstEvent *event = GST_EVENT (_data);
+
+    switch (GST_EVENT_TYPE (event)) {
+      case GST_EVENT_EOS:{
+        gst_element_set_eos (GST_ELEMENT (gsmdec));
+        gst_pad_push (gsmdec->srcpad, _data);
+        break;
+      }
+      case GST_EVENT_DISCONTINUOUS:{
+        /* drop the discontinuity */
+        break;
+      }
+      default:{
+        gst_pad_event_default (pad, event);
+        break;
+      }
+    }
+    return;
+  } else if (GST_IS_BUFFER (_data)) {
+    GstBuffer *buf = GST_BUFFER (_data);
+    gsm_byte *data = (gsm_byte *) GST_BUFFER_DATA (buf);
+    guint size = GST_BUFFER_SIZE (buf);
+
+    if (gsmdec->bufsize && (gsmdec->bufsize + size >= 33)) {
+      GstBuffer *outbuf;
+
+      memcpy (gsmdec->buffer + gsmdec->bufsize, data,
+          (33 - gsmdec->bufsize) * sizeof (gsm_byte));
+
+      outbuf = gst_buffer_new_and_alloc (160 * sizeof (gsm_signal));
+      GST_BUFFER_TIMESTAMP (outbuf) = gsmdec->next_ts;
+      GST_BUFFER_DURATION (outbuf) = 20 * GST_MSECOND;
+      GST_BUFFER_OFFSET (outbuf) = gsmdec->next_of;
+      GST_BUFFER_OFFSET_END (outbuf) = gsmdec->next_of + 160 - 1;
+      gsmdec->next_ts += 20 * GST_MSECOND;
+      gsmdec->next_of += 160;
+
+      gsm_decode (gsmdec->state, gsmdec->buffer,
+          (gsm_signal *) GST_BUFFER_DATA (outbuf));
+
+      gst_pad_push (gsmdec->srcpad, GST_DATA (outbuf));
+
+      size -= (33 - gsmdec->bufsize);
+      data += (33 - gsmdec->bufsize);
+      gsmdec->bufsize = 0;
+    }
+
+    while (size >= 33) {
+      GstBuffer *outbuf;
+
+      outbuf = gst_buffer_new_and_alloc (160 * sizeof (gsm_signal));
+      GST_BUFFER_TIMESTAMP (outbuf) = gsmdec->next_ts;
+      GST_BUFFER_DURATION (outbuf) = 20 * GST_MSECOND;
+      GST_BUFFER_OFFSET (outbuf) = gsmdec->next_of;
+      GST_BUFFER_OFFSET_END (outbuf) = gsmdec->next_of + 160 - 1;
+      gsmdec->next_ts += 20 * GST_MSECOND;
+      gsmdec->next_of += 160;
+
+      gsm_decode (gsmdec->state, data, (gsm_signal *) GST_BUFFER_DATA (outbuf));
+      gst_pad_push (gsmdec->srcpad, GST_DATA (outbuf));
+
+      size -= 33;
+      data += 33;
+    }
+
+    if (size) {
+      memcpy (gsmdec->buffer + gsmdec->bufsize, data, size * sizeof (gsm_byte));
+      gsmdec->bufsize += size;
+    }
+
+    gst_buffer_unref (buf);
+    return;
   }
-
-  if (size) {
-    memcpy (gsmdec->buffer + gsmdec->bufsize, data, size * sizeof (gsm_byte));
-    gsmdec->bufsize += size;
-  }
-
-  gst_buffer_unref (buf);
 }