-

1 files changed, 175 insertions, 0 deletions

diff --git a/tinyDAV/src/codecs/t140/tdav_codec_t140.c b/tinyDAV/src/codecs/t140/tdav_codec_t140.c
new file mode 100644
index 0000000..b401321
--- /dev/null
+++ b/tinyDAV/src/codecs/t140/tdav_codec_t140.c
@@ -0,0 +1,175 @@
+/*
+* Copyright (C) 2012 Mamadou Diop.
+*	
+* This file is part of Open Source Doubango Framework.
+*
+* DOUBANGO is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*	
+* DOUBANGO 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 General Public License for more details.
+*	
+* You should have received a copy of the GNU General Public License
+* along with DOUBANGO.
+*
+*/
+
+/**@file tdav_codec_t140.c
+ * @brief T140 codec implementation (RFC 4103)
+ */
+#include "tinydav/codecs/t140/tdav_codec_t140.h"
+
+#include "tsk_string.h"
+#include "tsk_memory.h"
+#include "tsk_debug.h"
+
+// RFC 4103 - 6.  Parameter for Character Transmission Rate
+#define TDAV_CODEC_T140_CPS	30
+
+static int tdav_codec_t140_set(tmedia_codec_t* self, const struct tmedia_param_s* param)
+{
+	return 0;
+}
+
+static int tdav_codec_t140_open(tmedia_codec_t* self)
+{
+	return 0;
+}
+
+static int tdav_codec_t140_close(tmedia_codec_t* self)
+{
+	return 0;
+}
+
+
+static tsk_size_t tdav_codec_t140_encode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size)
+{
+	tsk_size_t out_size = in_size;
+	
+	if(!self || !in_data || !in_size || !out_data){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return 0;
+	}
+	
+	if(*out_max_size <out_size){
+		if(!(*out_data = tsk_realloc(*out_data, out_size))){
+			TSK_DEBUG_ERROR("Failed to allocate new buffer");
+			*out_max_size = 0;
+			return 0;
+		}
+		*out_max_size = out_size;
+	}
+	memcpy(*out_data, in_data, out_size);
+	
+	return out_size;
+}
+
+static tsk_size_t tdav_codec_t140_decode(tmedia_codec_t* self, const void* in_data, tsk_size_t in_size, void** out_data, tsk_size_t* out_max_size, const tsk_object_t* proto_hdr)
+{
+	tsk_size_t out_size = in_size;
+
+	if(!self || !in_data || !in_size || !out_data){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return 0;
+	}
+
+	/* allocate new buffer */
+	if(*out_max_size < out_size){
+		if(!(*out_data = tsk_realloc(*out_data, out_size))){
+			TSK_DEBUG_ERROR("Failed to allocate new buffer");
+			*out_max_size = 0;
+			return 0;
+		}
+		*out_max_size = out_size;
+	}
+	memcpy(*out_data, in_data, out_size);
+	
+	return out_size;
+}
+
+static tsk_bool_t tdav_codec_t140_sdp_att_match(const tmedia_codec_t* self, const char* att_name, const char* att_value)
+{
+	return tsk_true;
+}
+
+static char* tdav_codec_t140_sdp_att_get(const tmedia_codec_t* self, const char* att_name)
+{
+	if(!self || !att_name){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return tsk_null;
+	}
+
+	if(tsk_striequals("fmtp", att_name)){
+		char* fmtp = tsk_null;
+		tsk_sprintf(&fmtp, "cps=%d", TDAV_CODEC_T140_CPS);
+		return fmtp;
+	}
+	return tsk_null;
+}
+
+
+//
+//	G.711u Plugin definition
+//
+
+/* constructor */
+static tsk_object_t* tdav_codec_t140_ctor(tsk_object_t * self, va_list * app)
+{
+	tdav_codec_t140_t *t140 = self;
+	if(t140){
+		/* init base: called by tmedia_codec_create() */
+		/* init self */
+	}
+	return self;
+}
+/* destructor */
+static tsk_object_t* tdav_codec_t140_dtor(tsk_object_t * self)
+{ 
+	tdav_codec_t140_t *t140 = self;
+	if(t140){
+		/* deinit base */
+		/* deinit self */
+	}
+
+	return self;
+}
+/* object definition */
+static const tsk_object_def_t tdav_codec_t140_def_s = 
+{
+	sizeof(tdav_codec_t140_t),
+	tdav_codec_t140_ctor, 
+	tdav_codec_t140_dtor,
+	tmedia_codec_cmp, 
+};
+/* plugin definition*/
+static const tmedia_codec_plugin_def_t tdav_codec_t140_plugin_def_s = 
+{
+	&tdav_codec_t140_def_s,
+	
+	tmedia_t140,
+	tmedia_codec_id_t140,
+	"t140",
+	"T140 codec (From tinyDAV)",
+	TMEDIA_CODEC_FORMAT_T140,
+	tsk_true,
+	1000, // rate
+	
+	/* audio */
+	{0},
+	
+	/* video */
+	{0},
+	
+	tdav_codec_t140_set,
+	tdav_codec_t140_open,
+	tdav_codec_t140_close,
+	tdav_codec_t140_encode,
+	tdav_codec_t140_decode,
+	tdav_codec_t140_sdp_att_match,
+	tdav_codec_t140_sdp_att_get
+};
+const tmedia_codec_plugin_def_t *tdav_codec_t140_plugin_def_t = &tdav_codec_t140_plugin_def_s;