work in progress not fully functional yet

src/mod/codecs/mod_codec2/Makefile

+BASE=../../../..
+
+CODEC2_DIR=$(switch_srcdir)/libs/libcodec2-1.0
+CODEC2_BUILDDIR=$(switch_builddir)/libs/libcodec2-1.0
+CODEC2LA=$(CODEC2_BUILDDIR)/src/libcodec2.la
+
+LOCAL_CFLAGS=-I$(CODEC2_DIR)/include -I$(CODEC2_BUILDDIR)/src
+LOCAL_LIBADD=$(CODEC2LA)
+include $(BASE)/build/modmake.rules
+
+$(CODEC2LA): $(CODEC2_DIR) $(CODEC2_DIR)/.update
+	cd $(CODEC2_BUILDDIR) && $(MAKE)
+	$(TOUCH_TARGET)
+

src/mod/codecs/mod_codec2/mod_codec2.c

+/* 
+ * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
+ * Copyright (C) 2005-2010, Anthony Minessale II <anthm@freeswitch.org>
+ *
+ * Version: MPL 1.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is FreeSWITCH Modular Media Switching Software Library
+ *
+ * The Initial Developer of the Original Code is
+ * Brian West <brian@freeswitch.org>
+ * Portions created by the Initial Developer are Copyright (C)
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * mod_codec2 -- FreeSWITCH CODEC2 Module
+ *
+ */
+
+#include <switch.h>
+#include <codec2.h>
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_codec2_load);
+
+SWITCH_MODULE_DEFINITION(mod_codec2, mod_codec2_load, NULL, NULL);
+
+struct codec2_context {
+	void *encoder;
+	void *decoder;
+};
+
+static switch_status_t switch_codec2_init(switch_codec_t *codec, switch_codec_flag_t flags, const switch_codec_settings_t *codec_settings)
+{
+	uint32_t encoding, decoding;
+	struct codec2_context *context = NULL;
+
+	encoding = (flags & SWITCH_CODEC_FLAG_ENCODE);
+	decoding = (flags & SWITCH_CODEC_FLAG_DECODE);
+
+	if (!(encoding || decoding)) {
+		return SWITCH_STATUS_FALSE;
+	}
+
+	if (!(context = switch_core_alloc(codec->memory_pool, sizeof(*context)))) {
+		return SWITCH_STATUS_FALSE;
+	}
+	context->encoder = codec2_create();
+	context->decoder = codec2_create();
+
+	codec->private_info = context;
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_codec2_encode(switch_codec_t *codec, switch_codec_t *other_codec,
+										  void *decoded_data,
+										  uint32_t decoded_data_len,
+										  uint32_t decoded_rate,
+										  void *encoded_data,
+										  uint32_t *encoded_data_len,
+										  uint32_t *encoded_rate,
+										  unsigned int *flag)
+{
+	struct codec2_context *context = codec->private_info;
+	
+	switch_assert(decoded_data_len == 160 * 2);
+	
+	codec2_encode(context->encoder, encoded_data, decoded_data);
+	
+	*encoded_data_len = 7; /* 51 bits */
+	*encoded_rate = 8000;
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_codec2_decode(switch_codec_t *codec,
+										  switch_codec_t *other_codec,
+										  void *encoded_data,
+										  uint32_t encoded_data_len,
+										  uint32_t encoded_rate,
+										  void *decoded_data,
+										  uint32_t *decoded_data_len,
+										  uint32_t *decoded_rate,
+										  unsigned int *flag)
+{
+	struct codec2_context *context = codec->private_info;
+
+	switch_assert(encoded_data_len == 7);
+
+	codec2_encode(context->decoder, decoded_data, encoded_data);
+
+	*decoded_data_len = 160 * 2; /* 160 samples */
+	*decoded_rate = 8000;
+	
+	return SWITCH_STATUS_SUCCESS;
+}
+
+static switch_status_t switch_codec2_destroy(switch_codec_t *codec)
+{
+	struct codec2_context *context = codec->private_info;
+	
+	codec2_destroy(context->encoder);
+	codec2_destroy(context->decoder);
+	
+	
+	context->encoder = NULL;
+	context->decoder = NULL;
+	
+	return SWITCH_STATUS_SUCCESS;
+}
+
+SWITCH_MODULE_LOAD_FUNCTION(mod_codec2_load)
+{
+	switch_codec_interface_t *codec_interface;
+
+	*module_interface = switch_loadable_module_create_module_interface(pool, modname);
+
+	SWITCH_ADD_CODEC(codec_interface, "CODEC2 2550bps");
+
+	switch_core_codec_add_implementation(pool, codec_interface,
+										 SWITCH_CODEC_TYPE_AUDIO,
+										 0,
+										 "CODEC2",
+										 NULL,
+										 8000, /* samples/sec */
+										 8000, /* samples/sec */
+										 2550, /* bps */
+										 20000, /* ptime */
+										 160,	/* samples decoded */
+										 320,	/* bytes decoded */
+										 7,	/* bytes encoded */
+										 1,	/* channels */
+										 1,	/* frames/packet */
+										 switch_codec2_init,
+										 switch_codec2_encode,
+										 switch_codec2_decode,
+										 switch_codec2_destroy);
+
+	return SWITCH_STATUS_SUCCESS;
+}
+
+/* For Emacs:
+ * Local Variables:
+ * mode:c
+ * indent-tabs-mode:t
+ * tab-width:4
+ * c-basic-offset:4
+ * End:
+ * For VIM:
+ * vim:set softtabstop=4 shiftwidth=4 tabstop=4:
+ */