media_node.h
资源名称:NETVIDEO.rar [点击查看]
上传用户:sun1608
上传日期:2007-02-02
资源大小:6116k
文件大小:2k
源码类别:
流媒体/Mpeg4/MP4
开发平台:
Visual C++
- /*
- * 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 MPEG4IP.
- *
- * The Initial Developer of the Original Code is Cisco Systems Inc.
- * Portions created by Cisco Systems Inc. are
- * Copyright (C) Cisco Systems Inc. 2000-2002. All Rights Reserved.
- *
- * Contributor(s):
- * Dave Mackie dmackie@cisco.com
- * Bill May wmay@cisco.com
- */
- #ifndef __MEDIA_NODE_H__
- #define __MEDIA_NODE_H__
- #include <SDL.h>
- #include <SDL_thread.h>
- #include <msg_queue.h>
- #include "mp4live_config.h"
- #include "media_frame.h"
- class CMediaNode {
- public:
- CMediaNode() {
- m_myThread = NULL;
- m_myMsgQueueSemaphore = NULL;
- m_pConfig = NULL;
- }
- static int StartThreadCallback(void* data) {
- return ((CMediaNode*)data)->ThreadMain();
- }
- void StartThread() {
- if (m_myThread == NULL) {
- m_myMsgQueueSemaphore = SDL_CreateSemaphore(0);
- m_myThread = SDL_CreateThread(StartThreadCallback, this);
- }
- }
- void StopThread() {
- if (m_myThread) {
- m_myMsgQueue.send_message(MSG_NODE_STOP_THREAD,
- NULL, 0, m_myMsgQueueSemaphore);
- SDL_WaitThread(m_myThread, NULL);
- m_myThread = NULL;
- SDL_DestroySemaphore(m_myMsgQueueSemaphore);
- m_myMsgQueueSemaphore = NULL;
- }
- }
- void Start(void) {
- m_myMsgQueue.send_message(MSG_NODE_START,
- NULL, 0, m_myMsgQueueSemaphore);
- }
- void Stop(void) {
- m_myMsgQueue.send_message(MSG_NODE_STOP,
- NULL, 0, m_myMsgQueueSemaphore);
- }
- virtual ~CMediaNode() {
- StopThread();
- }
- void SetConfig(CLiveConfig* pConfig) {
- m_pConfig = pConfig;
- }
- protected:
- static const int MSG_NODE = 1024;
- static const int MSG_NODE_START = MSG_NODE + 1;
- static const int MSG_NODE_STOP = MSG_NODE + 2;
- static const int MSG_NODE_STOP_THREAD = MSG_NODE + 3;
- virtual int ThreadMain(void) = NULL;
- protected:
- SDL_Thread* m_myThread;
- CMsgQueue m_myMsgQueue;
- SDL_sem* m_myMsgQueueSemaphore;
- CLiveConfig* m_pConfig;
- };
- #endif /* __MEDIA_NODE_H__ */