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1 files changed, 281 insertions, 0 deletions

diff --git a/tinyMEDIA/src/tmedia_jitterbuffer.c b/tinyMEDIA/src/tmedia_jitterbuffer.c
new file mode 100644
index 0000000..108eee1
--- /dev/null
+++ b/tinyMEDIA/src/tmedia_jitterbuffer.c
@@ -0,0 +1,281 @@
+/*
+* Copyright (C) 2011 Mamadou Diop.
+*
+* Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
+*	
+* 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 tmedia_jitterbuffer.c
+ * @brief Audio/Video  JitterBuffer plugin
+ *
+ * @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
+ */
+#include "tinymedia/tmedia_jitterbuffer.h"
+
+#include "tsk_debug.h"
+
+/* pointer to all registered jitter_buffers */
+static const tmedia_jitterbuffer_plugin_def_t* __tmedia_jitterbuffer_plugins[TMED_JITTER_BUFFER_MAX_PLUGINS] = {0};
+
+int tmedia_jitterbuffer_init(tmedia_jitterbuffer_t* self)
+{
+	if(!self){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return -1;
+	}
+	return 0;
+}
+
+int tmedia_jitterbuffer_set(tmedia_jitterbuffer_t *self, const tmedia_param_t* param)
+{
+	if(!self || !self->plugin || !param){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return 0;
+	}
+	return self->plugin->set ? self->plugin->set(self, param) : 0;
+}
+
+int tmedia_jitterbuffer_open(tmedia_jitterbuffer_t* self, uint32_t frame_duration, uint32_t rate, uint32_t channels)
+{
+	int ret;
+
+	if(!self || !self->plugin || !self->plugin->open){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return -1;
+	}
+	if(self->opened){
+		TSK_DEBUG_WARN("JitterBuffer already opened");
+		return 0;
+	}
+	
+	if((ret = self->plugin->open(self, frame_duration, rate, channels))){
+		TSK_DEBUG_ERROR("Failed to open [%s] jitterbufferr", self->plugin->desc);
+		return ret;
+	}
+	else{
+		self->opened = tsk_true;
+		return 0;
+	}
+}
+
+int tmedia_jitterbuffer_tick(tmedia_jitterbuffer_t* self)
+{
+	if(!self || !self->plugin || !self->plugin->tick){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return -1;
+	}
+
+	if(!self->opened){
+		TSK_DEBUG_ERROR("JitterBuffer not opened");
+		return -1;
+	}
+
+	return self->plugin->tick(self);
+}
+
+int tmedia_jitterbuffer_put(tmedia_jitterbuffer_t* self, void* data, tsk_size_t data_size, const tsk_object_t* proto_hdr)
+{
+	if(!self || !self->plugin || !self->plugin->put){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return -1;
+	}
+
+	if(!self->opened){
+		TSK_DEBUG_ERROR("JitterBuffer not opened");
+		return -1;
+	}
+
+	return self->plugin->put(self, data, data_size, proto_hdr);
+}
+
+tsk_size_t tmedia_jitterbuffer_get(tmedia_jitterbuffer_t* self, void* out_data, tsk_size_t out_size)
+{
+	if(!self || !self->plugin || !self->plugin->get){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return 0;
+	}
+
+	if(!self->opened){
+		TSK_DEBUG_ERROR("JitterBuffer not opened");
+		return 0;
+	}
+
+	return self->plugin->get(self, out_data, out_size);
+}
+
+int tmedia_jitterbuffer_reset(tmedia_jitterbuffer_t* self)
+{
+	if(!self || !self->plugin){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return -1;
+	}
+	if(self->opened && self->plugin->reset){
+		return self->plugin->reset(self);
+	}
+
+	return 0;
+}
+
+int tmedia_jitterbuffer_close(tmedia_jitterbuffer_t* self)
+{
+	if(!self || !self->plugin){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return -1;
+	}
+	if(!self->opened){
+		TSK_DEBUG_WARN("JitterBuffer not opened");
+		return 0;
+	}
+
+	if(self->plugin->close){
+		int ret;
+
+		if((ret = self->plugin->close(self))){
+			TSK_DEBUG_ERROR("Failed to close [%s] jitterbufferr", self->plugin->desc);
+			return ret;
+		}
+		else{
+			self->opened = tsk_false;
+			return 0;
+		}
+	}
+	else{
+		self->opened = tsk_false;
+		return 0;
+	}
+}
+
+int tmedia_jitterbuffer_deinit(tmedia_jitterbuffer_t* self)
+{
+	if(!self){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return -1;
+	}
+
+	if(self->opened){
+		tmedia_jitterbuffer_close(self);
+	}
+
+	return 0;
+}
+
+tmedia_jitterbuffer_t* tmedia_jitterbuffer_create(tmedia_type_t type)
+{
+	tmedia_jitterbuffer_t* jitter_buffer = tsk_null;
+	const tmedia_jitterbuffer_plugin_def_t* plugin;
+	tsk_size_t i = 0;
+
+	while((i < TMED_JITTER_BUFFER_MAX_PLUGINS) && (plugin = __tmedia_jitterbuffer_plugins[i++])){
+		if(plugin->objdef && plugin->type == type){
+			if((jitter_buffer = tsk_object_new(plugin->objdef))){
+				/* initialize the newly created jitter_buffer */
+				jitter_buffer->plugin = plugin;
+				break;
+			}
+		}
+	}
+
+	return jitter_buffer;
+}
+
+int tmedia_jitterbuffer_plugin_register(const tmedia_jitterbuffer_plugin_def_t* plugin)
+{
+	tsk_size_t i;
+	if(!plugin){
+		TSK_DEBUG_ERROR("Invalid parameter");
+		return -1;
+	}
+
+	/* add or replace the plugin */
+	for(i = 0; i<TMED_JITTER_BUFFER_MAX_PLUGINS; i++){
+		if(!__tmedia_jitterbuffer_plugins[i] || (__tmedia_jitterbuffer_plugins[i] == plugin)){
+			__tmedia_jitterbuffer_plugins[i] = plugin;
+			return 0;
+		}
+	}
+	
+	TSK_DEBUG_ERROR("There are already %d plugins.", TMED_JITTER_BUFFER_MAX_PLUGINS);
+	return -2;
+}
+
+/**@ingroup tmedia_jitterbuffer_group
+* UnRegisters a jitter_buffer plugin.
+* @param plugin the definition of the plugin.
+* @retval Zero if succeed and non-zero error code otherwise.
+*/
+int tmedia_jitterbuffer_plugin_unregister(const tmedia_jitterbuffer_plugin_def_t* plugin)
+{
+	tsk_size_t i;
+	tsk_bool_t found = tsk_false;
+	if(!plugin){
+		TSK_DEBUG_ERROR("Invalid Parameter");
+		return -1;
+	}
+
+	/* find the plugin to unregister */
+	for(i = 0; i<TMED_JITTER_BUFFER_MAX_PLUGINS && __tmedia_jitterbuffer_plugins[i]; i++){
+		if(__tmedia_jitterbuffer_plugins[i] == plugin){
+			__tmedia_jitterbuffer_plugins[i] = tsk_null;
+			found = tsk_true;
+			break;
+		}
+	}
+
+	/* compact */
+	if(found){
+		for(; i<(TMED_JITTER_BUFFER_MAX_PLUGINS - 1); i++){
+			if(__tmedia_jitterbuffer_plugins[i+1]){
+				__tmedia_jitterbuffer_plugins[i] = __tmedia_jitterbuffer_plugins[i+1];
+			}
+			else{
+				break;
+			}
+		}
+		__tmedia_jitterbuffer_plugins[i] = tsk_null;
+	}
+	return (found ? 0 : -2);
+}
+
+int tmedia_jitterbuffer_plugin_unregister_by_type(tmedia_type_t type)
+{
+	tsk_size_t i;
+	tsk_bool_t found = tsk_false;
+
+	/* find the plugin to unregister */
+	for(i = 0; i<TMED_JITTER_BUFFER_MAX_PLUGINS && __tmedia_jitterbuffer_plugins[i]; i++){
+		if((__tmedia_jitterbuffer_plugins[i]->type & type) == __tmedia_jitterbuffer_plugins[i]->type){
+			__tmedia_jitterbuffer_plugins[i] = tsk_null;
+			found = tsk_true;
+			break;
+		}
+	}
+
+	/* compact */
+	if(found){
+		for(; i<(TMED_JITTER_BUFFER_MAX_PLUGINS - 1); i++){
+			if(__tmedia_jitterbuffer_plugins[i+1]){
+				__tmedia_jitterbuffer_plugins[i] = __tmedia_jitterbuffer_plugins[i+1];
+			}
+			else{
+				break;
+			}
+		}
+		__tmedia_jitterbuffer_plugins[i] = tsk_null;
+	}
+	return (found ? 0 : -2);
+}