($width) AND $width .= 'px';
        $style = " style=\"width: $width\"";
    }
    $value = $value ? $value : date('H:i');
    $s = "<input type=\"time\" name=\"$name\" id=\"$name\" class=\"form-control\" value=\"$value\" $style />";
    return $s;
}

// form_date('start', '2018-07-05') 为空则当前日期
function form_date($name, $value = 0, $width = FALSE)
{
    $style = '';
    if (FALSE !== $width) {
        is_numeric($width) AND $width .= 'px';
        $style = " style=\"width: $width\"";
    }
    $value = $value ? $value : date('Y-m-d');
    $s = "<input type=\"date\" name=\"$name\" id=\"$name\" class=\"form-control\" value=\"$value\" $style />";
    return $s;
}

/**用法
 *
 * echo form_radio_yes_no('radio1', 0);
 * echo form_checkbox('aaa', array('无', '有'), 0);
 *
 * echo form_radio_yes_no('aaa', 0);
 * echo form_radio('aaa', array('无', '有'), 0);
 * echo form_radio('aaa', array('a'=>'aaa', 'b'=>'bbb', 'c'=>'ccc', ), 'b');
 *
 * echo form_select('aaa', array('a'=>'aaa', 'b'=>'bbb', 'c'=>'ccc', ), 'a');
 */


?>�组保留的标签 余下为需要删除的标签
                unset($oldtag[$key]);
            }
        }
    }
    

    if (!empty($oldtag)) {
        $tagids = array();
        foreach ($oldtag as $tagid => $tagname) {
            $tagids[] = $tagid;
        }

        well_oldtag_delete($tagids, $tid);
    }

    $r = well_tag_process($tid, $fid, $create_tag, $tagarr);

    

    return $r;
}

// 删除标签和绑定的主题
function well_oldtag_delete($tagids, $tid)
{
    

    $pagesize = count($tagids);
    $arrlist = well_tag_find_by_tagids($tagids, 1, $pagesize);

    

    $delete_tagids = array(); // 删除
    $tagids = array();
    $n = 0;
    foreach ($arrlist as $val) {
        ++$n;
        
        if (1 == $val['count']) {
            // 只有一个主题
            $delete_tagids[] = $val['tagid'];
            
        } else {
            $tagids[] = $val['tagid'];
        }
        
    }

    

    !empty($delete_tagids) and well_tag_delete($delete_tagids);

    $arlist = well_tag_thread_find_by_tid($tid, 1, $n);
    if ($arlist) {
        $ids = array();
        foreach ($arlist as $val) $ids[] = $val['id'];

        well_tag_thread_delete($ids);
    }

    !empty($tagids) and well_tag_update($tagids, array('count-' => 1));

    
}

// 标签数据处理 $arr=新提交的数组 $tagarr=保留的旧标签
function well_tag_process($tid, $fid, $new_tags = array(), $tagarr = array())
{
    if (empty($tid)) return '';

    

    // 新标签处理入库
    if ($new_tags) {

        

        $threadarr = array();
        $tagids = array();
        $i = 0;
        $size = 5;
        $n = count($tagarr);
        $n = $n > $size ? $size : $size - $n;

        

        foreach ($new_tags as $name) {
            ++$i;
            $name = trim($name);
            $name = stripslashes($name);
            $name = strip_tags($name);
            $name = str_replace(array('&nbsp;', '#', "@", "$", "%", "^", '&', '·', '<', '>', '；', '`', '~', '!', '￥', '……', ';', '?', '？', '-', '—', '_', '=', '+', '.', '{', '}', '|', ':', '：', '、', '/', '。', '[', ']', '【', '】', '‘', '	', '    ', '  ', '   ', '    '), '', $name);
            $name = htmlspecialchars($name, ENT_QUOTES);
            if ($name && $i <= $n) {
                
                // 查询标签
                $read = well_tag_read_name($name);
                
                if ($read) {
                    // 存在 count+1
                    $tagids[] = $read['tagid'];
                    
                } else {
                    // 入库
                    $arr = array('name' => $name, 'count' => 1);
                    
                    $tagid = well_tag_create($arr);
                    FALSE === $tagid and message(-1, lang('create_failed'));
                    $read = array('tagid' => $tagid, 'name' => $name);
                    
                }

                $tag_thread = array('tagid' => $read['tagid'], 'tid' => $tid);

                

                $threadarr[] = $tag_thread;

                

                $tagarr[$read['tagid']] = $read['name'];
            }
        }

        

        !empty($threadarr) and tag_thread_big_insert($threadarr);

        !empty($tagids) and well_tag_update($tagids, array('count+' => 1));
    }

    

    $json = empty($tagarr) ? '' : xn_json_encode($tagarr);

    

    return $json;
}




?>return $r;
}

/**
 * @param int $page 页数
 * @param int $pagesize 每页显示数量
 * @return mixed
 */
function link_find($page = 1, $pagesize = 100)
{
    
    $arr = link__find($cond = array(), array('rank' => -1), $page, $pagesize);
    
    return $arr;
}

/**
 * @param $id
 * @return bool 返回FALSE失败 TRUE成功
 */
function link_delete($id)
{
    if (empty($id)) return FALSE;
    
    $r = link__delete(array('id' => $id));
    link_delete_cache();
    
    return $r;
}

//--------------------------kv + cache--------------------------
/**
 * @return mixed 返回全部友情链接
 */
function link_get($page = 1, $pagesize = 100)
{
    $g_link = website_get('friends_link');
    if (empty($g_link)) {
        $g_link = link_find($page, $pagesize);
        $g_link AND website_set('friends_link', $g_link);
    }
    return $g_link;
}

// delete kv and cache
function link_delete_cache()
{
    website_set('friends_link', '');
    return TRUE;
}




?>   $v = implode(",", $v);
        $temp[] = $v;
    }
    // 去掉重复的字符串,也就是重复的一维数组
    $temp = array_unique($temp);
    // 再将拆开的数组重新组装
    $output = array();
    foreach ($temp as $k => $v) {
        if ($stkeep) $k = $starr[$k];
        if ($ndformat) {
            $temparr = explode(",", $v);
            foreach ($temparr as $ndkey => $ndval) $output[$k][$ndarr[$ndkey]] = $ndval;
        } else $output[$k] = explode(",", $v);
    }
    return $output;
}

// 合并二维数组 如重复 值以第一个数组值为准
function array2_merge($array1, $array2, $key = '')
{
    if (empty($array1) || empty($array2)) return NULL;
    $arr = array();
    foreach ($array1 as $k => $v) {
        isset($v[$key]) ? $arr[$v[$key]] = array_merge($v, $array2[$k]) : $arr[] = array_merge($v, $array2[$k]);
    }
    return $arr;
}

/*
 * 对二维数组排序 两个数组必须有一个相同的键值
 * $array1 需要排序数组
 * $array2 按照该数组key排序
 * */
function array2_sort_key($array1, $array2, $key = '')
{
    if (empty($array1) || empty($array2)) return NULL;
    $arr = array();
    foreach ($array2 as $k => $v) {
        if (isset($v[$key]) && $v[$key] == $array1[$v[$key]][$key]) {
            $arr[$v[$key]] = $array1[$v[$key]];
        } else {
            $arr[] = $v;
        }
    }

    return $arr;
}




?><!DOCTYPE html><html lang="zh-cn"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><meta http-equiv="X-UA-Compatible" content="IE=Edge,chrome=1" /><meta http-equiv="Cache-Control" content="no-transform" /><meta http-equiv="Cache-Control" content="no-siteapp" /><meta name="viewport" content="width=device-width,minimum-scale=1,maximum-scale=1,initial-scale=1,maximum-scale=1" /><meta name="referrer" content="origin-when-cross-origin"><meta name="applicable-device" content="pc,mobile" /><meta name="MobileOptimized" content="width" /><meta name="HandheldFriendly" content="true" /><meta name="renderer" content="webkit" /><meta name="keywords" content="USB块传输：极限在哪里？" /><meta name="description" content="用Bulk 传输VBI信息时，发现字幕经常出现拼写错误的问题，查了一下，原来是bulk pipe 的transfer sizes设置错误，超出了大小限制。USB transfer sizes有如下限制:" /><title>USB块传输：极限在哪里？-软件玩家 - 软件改变生活！
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<div class="betaflare-com main"><div class="betaflare-com top-bar"><div class="betaflare-com crumbs"><a href="/">首页</a><a href="/biancheng">编程</a><span>正文内容</span></div><form method="post" class="search-form" action="/operate/search.html" ><button class="mcico mico-search" type="submit"></button><input type="text" class="search-input" name="keyword" placeholder="关键词" /><input type="hidden" name="range" value="1"></form></div><div class="betaflare-com post-wrap"><div class="betaflare-com post-header"><h1 class="post-title">USB块传输：极限在哪里？</h1><div class="betaflare-com post-meta"><ul class="post-categories"><li><a href="/biancheng">编程</a></li></ul><span>更新时间：2026-02-12</span><span><i class="mcico mico-huo"></i>16</span><div class="betaflare-com tag-wrap post-header-tags"></div></div></div><div class="betaflare-com post-content"><blockquote style="padding: 0px; margin: 0;" class="author_bq"><a href="/user/1.html" title="admin"><div class="betaflare-com video_docimg"><img src="/upload/avatar/000/1.png?1696565124"></div><div class="betaflare-com video_docinfo"><div><span>admin</span><span class="professional">管理员组</span></div><p class="video_hospital">文章数量:1516870</p></div></a></blockquote><div class="htmledit_views atom-one-dark" id="content_views"><p>
  用Bulk
  <span style="FONT-SIZE: 8.5pt; COLOR: black">
   传输VBI信息时，发现字幕经常出现拼写错误的问题，查了一下，原来是bulk pipe 的transfer sizes设置错误，超出了大小限制。
  </span></p><p>
  USB transfer sizes有如下限制:
  <br/>
  在Windows 2000, Windows XP and Windows 2003 Server中，Transfer Sizes 的最大值：
  <br/>
  控制管道：
  <br/>
  4,000 bytes
  <br/>
  块、中断管道：
  <br/>
  256,000 bytes
  <br/>
  同步管道：
  <br/>
  全速设备：256帧, 高速设备：1024 帧
  <br/>
  驱动可以设置USBD_PIPE_INFORMATION结构的成员变量MaximumTransferSize，但是一定要小于Transfer Sizes 的最大值。
 </p><strong>
  DDK参考：
 </strong><strong>
  MaximumTransferSize
 </strong><dd>
  Specifies the maximum size, in bytes, for a transfer request on this pipe. In Windows Server 2003, Windows XP and later operating systems, this member is not used and does not contain valid data.
  <br/>
  The following table lists the maximum transfer sizes for each type of pipe for the major versions of Windows:
  <p></p><p></p><strong></strong><table><tbody><tr><th>
      Version of Windows
     </th><th>
      Type of Pipe
     </th><th>
      Maximum Transfer Size
     </th></tr><tr><td>
      Windows 2000
     </td><td>
      Control pipe endpoint 0
     </td><td>
      4 kilobytes
     </td></tr><tr><td></td><td>
      Control pipe
     </td><td>
      64 kilobytes
     </td></tr><tr><td></td><td>
      Interrupt or bulk pipe
     </td><td>
      Theoretically unlimited
     </td></tr><tr><td>
      Windows XP
     </td><td>
      Control pipe endpoint 0
     </td><td>
      4 kilobytes
     </td></tr><tr><td></td><td>
      Control pipe
     </td><td>
      64 kilobytes
     </td></tr><tr><td></td><td>
      Interrupt pipe
     </td><td>
      Theoretically unlimited
     </td></tr><tr><td></td><td><font color="#ff0000">
       Bulk pipe
      </font></td><td><font color="#ff0000">
       256 kilobytes
      </font></td></tr><tr><td>
      Windows Vista
     </td><td>
      Control pipe endpoint 0
     </td><td>
      4 kilobytes
     </td></tr><tr><td></td><td>
      Control pipe
     </td><td>
      64 kilobytes
     </td></tr><tr><td></td><td>
      Interrupt or bulk pipe
     </td><td>
      Unlimited transfers.
     </td></tr></tbody></table></dd><p>
  具体来说：
 </p><span lang="EN-US" style="FONT-SIZE: 8.5pt; COLOR: black; FONT-FAMILY: Verdana; mso-bidi-font-family: 宋体; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"><p class="syntax" style="PADDING-RIGHT: 4pt; PADDING-LEFT: 4pt; BACKGROUND: #dddddd; PADDING-BOTTOM: 2pt; FONT: 100% Courier New, Courier, mono; CURSOR: text; PADDING-TOP: 2pt"><strong>
    VOID
   </strong><br/><strong>
    UsbBuildInterruptOrBulkTransferRequest(
   </strong><br/><strong>
    IN OUT PURB
   </strong><em></em><strong>
    ,
   </strong><br/><strong>
    IN USHORT
   </strong><em></em><strong>
    ,
   </strong><br/><strong>
    IN USBD_PIPE_HANDLE
   </strong><em></em><strong>
    ,
   </strong><br/><strong>
    IN PVOID
   </strong><em></em><strong>
    OPTIONAL,
   </strong><br/><strong>
    IN PMDL
   </strong><em></em><strong>
    OPTIONAL,
   </strong><br/><strong>
    IN ULONG
   </strong><em></em><strong>
    , ----注意要小于上面提到的限制
   </strong><br/><strong>
    IN ULONG
   </strong><em></em><strong>
    ,
   </strong><br/><strong>
    IN PURB
   </strong><em></em><br/><strong>
    );
   </strong><br/></p><span style="FONT-SIZE: 8.5pt; COLOR: black">
   在Bulk
  </span><span style="FONT-SIZE: 8.5pt; COLOR: black">
   传输VBI信息时：
  </span></span></div><p class="tag">
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