added hermes

Original commit message from CVS:
added hermes

1 files changed, 191 insertions, 0 deletions

diff --git a/ext/gsm/gstgsmenc.c b/ext/gsm/gstgsmenc.c
new file mode 100644
index 000000000..73058a666
--- /dev/null
+++ b/ext/gsm/gstgsmenc.c
@@ -0,0 +1,191 @@
+/* Gnome-Streamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+#include <string.h>
+
+#include "gstgsmenc.h"
+
+extern GstPadTemplate *gsmenc_src_template, *gsmenc_sink_template;
+
+/* elementfactory information */
+GstElementDetails gst_gsmenc_details = {
+  "gsm audio encoder",
+  "Filter/Encoder/Audio",
+  ".gsm",
+  VERSION,
+  "Wim Taymans <wim.taymans@chello.be>",
+  "(C) 2000",
+};
+
+/* GSMEnc signals and args */
+enum {
+  FRAME_ENCODED,
+  /* FILL ME */
+  LAST_SIGNAL
+};
+
+enum {
+  ARG_0,
+  /* FILL ME */
+};
+
+static void		gst_gsmenc_class_init	(GstGSMEnc *klass);
+static void		gst_gsmenc_init		(GstGSMEnc *gsmenc);
+
+static void		gst_gsmenc_chain	(GstPad *pad,GstBuffer *buf);
+static void 		gst_gsmenc_newcaps 	(GstPad *pad, GstCaps *caps);
+
+static GstElementClass *parent_class = NULL;
+static guint gst_gsmenc_signals[LAST_SIGNAL] = { 0 };
+
+GType
+gst_gsmenc_get_type (void)
+{
+  static GType gsmenc_type = 0;
+
+  if (!gsmenc_type) {
+    static const GTypeInfo gsmenc_info = {
+      sizeof (GstGSMEncClass),
+      NULL,
+      NULL,
+      (GClassInitFunc) gst_gsmenc_class_init,
+      NULL,
+      NULL,
+      sizeof (GstGSMEnc),
+      0,
+      (GInstanceInitFunc) gst_gsmenc_init,
+    };
+    gsmenc_type = g_type_register_static (GST_TYPE_ELEMENT, "GstGSMEnc", &gsmenc_info, 0);
+  }
+  return gsmenc_type;
+}
+
+static void
+gst_gsmenc_class_init (GstGSMEnc *klass)
+{
+  GObjectClass *gobject_class;
+  GstElementClass *gstelement_class;
+
+  gobject_class = (GObjectClass*) klass;
+  gstelement_class = (GstElementClass*) klass;
+
+  parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
+
+  gst_gsmenc_signals[FRAME_ENCODED] =
+    g_signal_new ("frame_encoded", G_TYPE_FROM_CLASS(klass), G_SIGNAL_RUN_LAST,
+                   G_STRUCT_OFFSET (GstGSMEncClass, frame_encoded), NULL, NULL,
+                   g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
+}
+
+
+static void
+gst_gsmenc_init (GstGSMEnc *gsmenc)
+{
+  /* create the sink and src pads */
+  gsmenc->sinkpad = gst_pad_new_from_template (gsmenc_sink_template, "sink");
+  gst_element_add_pad (GST_ELEMENT (gsmenc), gsmenc->sinkpad);
+  gst_pad_set_chain_function (gsmenc->sinkpad, gst_gsmenc_chain);
+  gst_pad_set_newcaps_function (gsmenc->sinkpad, gst_gsmenc_newcaps);
+
+  gsmenc->srcpad = gst_pad_new_from_template (gsmenc_src_template, "src");
+  gst_element_add_pad (GST_ELEMENT (gsmenc), gsmenc->srcpad);
+
+  gsmenc->state = gsm_create ();
+  gsmenc->bufsize = 0;
+  gsmenc->next_ts = 0;
+  gsmenc->rate = 8000;
+}
+
+static void
+gst_gsmenc_newcaps (GstPad *pad, GstCaps *caps)
+{
+  GstGSMEnc *gsmenc;
+
+  gsmenc = GST_GSMENC (gst_pad_get_parent (pad));
+
+  gsmenc->rate = gst_caps_get_int (caps, "rate");
+
+  gst_pad_set_caps (gsmenc->srcpad, GST_CAPS_NEW (
+                              "gsm_gsm",
+                              "audio/x-gsm",
+                                "rate",       GST_PROPS_INT (gsmenc->rate)
+                               ));
+}
+
+static void
+gst_gsmenc_chain (GstPad *pad, GstBuffer *buf)
+{
+  GstGSMEnc *gsmenc;
+  gsm_signal *data;
+  guint size;
+
+  g_return_if_fail (pad != NULL);
+  g_return_if_fail (GST_IS_PAD (pad));
+  g_return_if_fail (buf != NULL);
+
+  gsmenc = GST_GSMENC (GST_OBJECT_PARENT (pad));
+	      
+  data = (gsm_signal*) GST_BUFFER_DATA (buf);
+  size = GST_BUFFER_SIZE (buf) / sizeof (gsm_signal);
+
+  if (gsmenc->bufsize && (gsmenc->bufsize + size >= 160)) {
+    GstBuffer *outbuf;
+
+    memcpy (gsmenc->buffer + gsmenc->bufsize, data, (160 - gsmenc->bufsize) * sizeof (gsm_signal));
+
+    outbuf = gst_buffer_new ();
+    GST_BUFFER_DATA (outbuf) = g_malloc (33 * sizeof (gsm_byte));
+    GST_BUFFER_SIZE (outbuf) = 33 * sizeof (gsm_byte);
+
+    gsm_encode (gsmenc->state, gsmenc->buffer, (gsm_byte *) GST_BUFFER_DATA (outbuf));
+
+    GST_BUFFER_TIMESTAMP (outbuf) = gsmenc->next_ts;
+    gst_pad_push (gsmenc->srcpad, outbuf);
+    gsmenc->next_ts += (160.0 / gsmenc->rate) * 1000000;
+
+    size -= (160 - gsmenc->bufsize); 
+    data += (160 - gsmenc->bufsize);
+    gsmenc->bufsize = 0;
+  }
+
+  while (size >= 160) {
+    GstBuffer *outbuf;
+
+    outbuf = gst_buffer_new ();
+    GST_BUFFER_DATA (outbuf) = g_malloc (33 * sizeof (gsm_byte));
+    GST_BUFFER_SIZE (outbuf) = 33 * sizeof (gsm_byte);
+
+    gsm_encode (gsmenc->state, data, (gsm_byte *) GST_BUFFER_DATA (outbuf));
+
+    GST_BUFFER_TIMESTAMP (outbuf) = gsmenc->next_ts;
+    gst_pad_push (gsmenc->srcpad, outbuf);
+    gsmenc->next_ts += (160.0 / gsmenc->rate) * 1000000;
+
+    size -= 160;
+    data += 160;
+  }
+
+  if (size) {
+    memcpy (gsmenc->buffer + gsmenc->bufsize, data, size * sizeof (gsm_signal));
+    gsmenc->bufsize += size;
+  }
+
+  gst_buffer_unref(buf);
+}