struct.h

mysee网络直播源代码Mysee Lite是Mysee独立研发的网络视频流媒体播放系统。在应有了P2P技术和一系列先进流媒体技术之后

/*
*  Openmysee
*
*  This program 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 2 of the License, or
*  (at your option) any later version.
*
*  This program 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 this program; if not, write to the Free Software
*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*
*/
// 系统通用的数据结构以及部分常量的定义

#ifndef __STRUCT_DEFINE_H__
#define __STRUCT_DEFINE_H__

enum {
    SP4CS_PORT = 20, // SP接受CS连接的TCP端口
};

enum {
    MD5_LEN = 32,          // MD5值的长度
	BLOCK_SIZE = 16384,	   // 默认分块大小
};

// 普通网络的IP地址信息，精简版，大小8字节
// 不能直接当做sockaddr使用，只能赋值给一个sockaddr
class NormalAddress {
public:
    NormalAddress() {
        memset(this, 0, sizeof(NormalAddress));
        sin_family = AF_INET;
    };
    bool operator == (const NormalAddress& addr) const {
        return ((addr.sin_addr.s_addr == sin_addr.s_addr) && 
            (addr.sin_port == sin_port));
    };
    short sin_family;
    u_short sin_port;
    struct in_addr sin_addr;
};

// 数据传输的相关信息，目前大小32字节
class TransferInfo {
public:
    TransferInfo() { memset(this, 0, sizeof(TransferInfo)); };
    LONGLONG totalDownBytes;  // 总共下载字节
    LONGLONG totalUpBytes;    // 总共上传字节
    float    currDownSpeed;   // 当前下载速度
    float    currUpSpeed;     // 当前上传速度
    float    avgDownSpeed;    // 平均下载速度
    float    avgUpSpeed;      // 平均上传速度
};

// DirectShow初始化需要的媒体类型数据，大小56字节
struct TVMEDIATYPESECTION {
	GUID     majortype;
	GUID     subtype;
	GUID     formattype;
	ULONG    lSampleSize;
	unsigned bFixedSizeSamples:1;
	unsigned bTemporalCompression:1;
	unsigned bThisPinOnly:1;
	unsigned cbFormat:16;
	unsigned :13;
};

// Sample头的大小，共16字节
struct SampleHeader {
	unsigned	size:28;			// 此Sample大小
	unsigned	bDiscontinuity:1;	// Sample属性
	unsigned	bPreroll:1;			// Sample属性
	unsigned	bSyncPoint:1;		// 是否关键帧
	unsigned	bAudioSample:1;		// 是否音频Sample
	UINT		length;				// 时间跨度
	LONGLONG	start;				// 起始时间
};

#endif