CN100512421C - Resource scheduling method for implementing image processing in conference telephone system - Google Patents

Resource scheduling method for implementing image processing in conference telephone system Download PDF

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CN100512421C
CN100512421C CN 200510090204 CN200510090204A CN100512421C CN 100512421 C CN100512421 C CN 100512421C CN 200510090204 CN200510090204 CN 200510090204 CN 200510090204 A CN200510090204 A CN 200510090204A CN 100512421 C CN100512421 C CN 100512421C
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video
rate
current
number
resource scheduling
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CN1913621A (en
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付永刚
健 翁
黄书平
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中兴通讯股份有限公司
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Abstract

本发明公开了一种在会议电视系统中实现图像处理的资源调度方法,包括:系统初始化,并将各媒体处理芯片的当前使用情况设置为空闲状态;系统根据所检测到的当前会议各终端的第一视频速率、第二视频速率和多画面数得到召开当前一组会议需要的媒体处理芯片数目;判断召开当前一组会议需要的媒体处理芯片数目是否小于或等于处于空闲状态的媒体处理芯片的数目,若是,将被当前一组会议使用的各媒体处理芯片的当前使用情况设置为当前一组会议的标识,否则返回相应的消息,说明当前视频资源不足,拒绝召开当前一组会议;重复上述步骤,直至多组会议的资源调度完成。 The present invention discloses a method for implementing resource scheduling an image processing in the television conference system, comprising: a system initialization, and the current usage of the media is set to the idle state processing chip; each terminal system according to the detected current session a first video rate, a second video rate and the number of pictures to obtain a multi-media processing chip held number meeting this need a set; determining whether the number of held media processing chip media processing chip set session requires a current less than or equal to the idle state number, and if so, the media processing chip to be used in the current set of meeting the current usage to identify this group session, otherwise the corresponding message, indicating that the current lack of video resources, refuse held current set session; repeating the above step, multi-resource scheduling group meetings until completion. 本发明能有效地调度系统资源,实现多组会议多画面两速率的图像处理。 The present invention is effective scheduling system resources, the image processing rate of two multi-screen multi-group meeting.

Description

一种在会议电视系统中实现图像处理的资源调度方法 Resource scheduling method for implementing image processing in the TV conference system

技术领域 FIELD

本发明涉及会议电视系统,尤其是涉及一种在会议电视系统中实现图像处理的资源调度方法。 The present invention relates to a television conference system, and particularly to resource scheduling method implemented in image processing in a video conference system.

背景技术 Background technique

在会议电视系统中,接入会议的终端都需要通过MCU (MultipointControl Unit,多点控制单元)进行交互,MCU主要包括MC (MultipointController,多点控制器)和MP (Multipoint Processor,多点处理器)两大功能实体,其中,MC用以提供多点会议的控制,MP则提供多点会议中音频、视频和数据流的集中处理。 In the television conference system, a terminal to the conference by the required interaction MCU (MultipointControl Unit, multipoint control unit), the MCU including MC (MultipointController, multipoint controller) and MP (Multipoint Processor, multi-processor) two functional entities, wherein, the MC to provide a multipoint conference control, centralized multipoint conference the MP processing audio, video and data streams is provided.

众所周知,MCU中接入终端的声音处理的主要方法是混音,可以通过MP中的APU (语音编/解码处理单元)和MIX (语音混合处理单元)来实现。 Know, the main method of voice MCU access terminals is the mixer processing, can be achieved by the APU in the MP (voice coding / decoding processing unit) and MIX (voice mixing processing units). 但是,对于视频图像处理,却仅仅局限于图像广播和图像切换等简单处理,现有技术中MCU产品仅支持单组会议的多画面,且采用的硬件系统多为PC工控机,无法满足多媒体电信级的可运营、高稳定性等要求。 However, video image processing, but beyond a simple image processing and image broadcast switching, etc., prior art MCU product supports only a single multi-picture group meetings, and hardware systems mostly used in PC IPC, unable to meet the multimedia telecommunications level may require operation, high stability.

目前,随着高性能图像处理芯片技术的成熟,MCU系统中已逐步采用高性能图像处理芯片(一般采用数字信号处理芯片,简称为DSP芯片)来实现多个终端的图像混合(多画面)以及图像格式和速率的匹配,但是单个DSP芯片的处理能力有限,于是需要多个DSP芯片并行处理,然而,由于缺乏灵活有效的资源调度方法,即如何对系统中多个DSP芯片进行调度,使之能相互配合实现多组会议多画面两速率的图像处理,从而导致采用多个媒体处理芯片的技术方案难以实施。 At present, high-performance image processing chip with the maturity of the technology, the MCU systems have already started using high-performance image processing chip (typically digital signal processing chip, referred to as DSP chips) to achieve an image of mixing a plurality of terminals (multi-screen) and and rate matching the image format, but the limited processing capability of a single DSP chip, then a need for parallel processing of a plurality of DSP chips, however, the lack of efficient and flexible resource scheduling method, i.e. how the system scheduling a plurality of DSP chips, so We can cooperate with each other to achieve multi-session plurality of sets of picture image processing rate of the two, resulting in a plurality of media processing chips using technical solutions difficult to implement.

发明内容 SUMMARY

本发明需要解决的技术问题是提供一种在会议电视系统中实现图像处理的资源调度方法,采用该方法能灵活有效地调度系统资源,使系统中多个 The present invention is a technical problem to be solved is to provide a resource scheduling method implemented image processing in the television conference system, this method can effectively and flexibly scheduling system resources, the system in a plurality of

4媒体处理芯片能共同运行,从而实现多组会议多画面两速率的图像处理。 4 media processing chip can operate together to achieve a multi-session plurality of sets of two picture image processing rate.

为了解决上述技术问题,本发明提供了一种在会议电视系统中实现图像 To solve the above technical problem, the present invention provides a method implemented in a television conference system, image

处理的资源调度方法,包括如下步骤: Processing resource scheduling method, comprising the steps of:

(a) 系统初始化,并将系统中各媒体处理芯片的当前使用情况设置为空闲状态; (A) initializing the system, and the system currently used in the case where the media processing chip set to an idle state;

(b) 系统检测请求视频资源的当前一组会议的各终端的第一视频速率和第二视频速率,并且根据所;险测到的视频速率和所述当前一组会议所需的多画面数得到召开所述当前一组会议需要的媒体处理芯片数目,所述第一视频速率为系统检测当前一组会议的各终端视频速率时所检测到的第一个视频速率,而所述第二视频速率为系统检测到的与第一视频速率不同的视频速率; A first terminal of each current video rate meeting a set of (b) the system detects a request for a video and a second video rate of resources, and according to; the number of frames required multiple risk sensed video rate and the current set of session the number of chips held to obtain the current media processing needs meeting a set of the first video rate is a video system for detecting a first rate when the current rate of each terminal set of the video conference detected, and the second video rate is detected by the system different from the first video rate video rate;

(c) 计算系统中处于空闲状态的媒体处理芯片的数目,判断步骤(b) 中所得到的召开当前该组会议需要的媒体处理芯片数目是否小于或等于当前系统中处于空闲状态的媒体处理芯片的数目,若小于或等于,执行步骤 The number of media processing chip, (c) the computing system is in the idle state, it is determined in step (b) obtained in the held media processing chip whether the number of media processing chip current of the group session, to less than or equal to the current system idle number, if less than or equal to, step

(d),否则执行步骤(e); (D), otherwise step (E);

(d )将被所述当前一组会议使用的各媒体处理芯片的当前使用情况设置为所述当前一组会议的标识,并且计算召开当前会议后系统中剩下的处于空闲状态的媒体处理芯片的数目,执行步骤(f); And (d) each of said current media are used in processing chip set session identifier set to the current usage of the set of current session, and calculates the chip after the meeting held media processing systems currently remaining in an idle state the number of step (F);

(e) 返回相应的消息,说明当前视频资源不足,拒绝召开所述当前一组会议; (E) a corresponding message, indicating insufficient current video assets held reject the current set of session;

(f) 系统对请求视频资源的下一组会议进行资源调度,重复步骤(b) 至(e),直至系统所需同时召开的多组会议的资源调度完成。 (F) for the next set of system resource request for a video conference resource scheduling, repeating steps (b) through (E), a multi-resource scheduling group meetings held until required by the system at the same time to complete.

进一步地,本发明还具有如下特点:当系统初始化时,构造一个用于调度资源的基于多画面数、第一视频速率和第二视频速率的三维数组表,并且存储所述三维数组表。 Further, the present invention also has the following characteristics: when the system is initialized, a configuration based on the number of multi-screen, three-dimensional array and a first video rate video rate scheduling table of the second resource, and stores the three-dimensional array table.

进一步地,本发明还具有如下特点:当系统检测当前一组会议的各终端视频速率时,检测到的第一个视频速率设为第一视频速率,检测到的与第一视频速率不同的视频速率设为第二视频速率,若;f全测到三个或三个以上互不相同的视频速率,则返回视频资源不足,数据库配置出错的消息。 Further, the present invention also has the following characteristics: when the system detects a current video rate each terminal group meeting, the detected first video rate is a first video rate, detected by the first video rate different video rate to a second video rate, if; F full measured three or more mutually different video rate, video resources is insufficient is returned, an error message database configuration.

进一步地,本发明还具有如下特点:系统根据所检测到的第一视频速率、第二视频速率和当前一组会议所需的多画面数,查询所述三维数组表得到召开当前一组会议需要的媒体处理芯片数目。 Further, the present invention also has the following characteristics: the number of multi-screen systems according to the detected first video rate, required by the second video rate and a set of current session, querying the current three-dimensional array table to obtain a group meeting held required the number of media processing chip.

进一步地,本发明还具有如下特点:构造所述用于调度资源的三维数组 Further, the present invention also has the following characteristics: three-dimensional array is configured to schedule the resources

表的决定因素包括媒体处理芯片的视频解码能力,根据由多画面数决定的解码路数和媒体处理芯片的视频解码能力可计算得到相应的视频解码所需媒体处理芯片数。 Determinants table includes a video decoder chip media processing capacity, calculated to give the corresponding number of the video decoding chip media processing capacity required for video decoding is determined by the number of multi-media picture decoding processing chip and large ones.

进一步地,本发明还具有如下特点:构造所述用于调度资源的三维数组表的决定因素包括々某体处理芯片的视频编码能力,才艮据由不同视频速率的终端种类数决定的编码路数和媒体处理芯片的视频编码能力可计算得到相应的视频编码所需媒体处理芯片数。 Further, the present invention also has the following characteristics: a configuration table for the three-dimensional array factor determined resource scheduling capabilities include video encoding 々 a processing chip body before coding according Gen path determined by the number of types of terminals of different video rate the number of video encoding and media processing capacity of the chip to give the corresponding calculated video encoding process media required number of chips.

进一步地,本发明还具有如下特点:构造所述用于调度资源的三维数组表的决定因素包括视频缩放滤波系数和视频合成系数。 Further, the present invention also has the following characteristics: a three-dimensional configuration of the array factor for determining resource scheduling table includes video scaling coefficient synthesis filter coefficients and video.

进一步地,本发明还具有如下特点:所述用于调度资源的三维数组表能根据软硬件能力系数的变化而进行适当地调整。 Further, the present invention also has the following characteristics: a three-dimensional array table for scheduling of resources can be appropriately adjusted according to changes in hardware and software capacity factor.

进一步地,本发明还具有如下特点:所述视频速率包括视频格式和视频码率的信息。 Further, the present invention also has the following characteristics: the information comprises a video rate video formats and bit rate.

进一步地,本发明还具有如下特点:当一组会iO吉束后,系统关闭该组会议,将被该组会议使用的各^^某体处理芯片的当前使用情况设置为空闲状态。 Further, the present invention also has the following characteristics: When a set of Ji will iO beam, the system closes the session set, each of the current usage of the set is used ^^ meeting a body processing chip to idle state.

与现有技术相比,本发明具有以下优点: Compared with the prior art, the present invention has the following advantages:

A、 本发明根据所检测到的请求资源的当前一组会议各终端的视频速率和当前一组会议所需的多画面数,得到召开当前一组会议需要的媒体处理芯片数目,并将其与系统中处于空闲状态的媒体处理芯片数目比较,判断出系统资源是否满足召开当前一组会议的需要,若满足则分配相应的资源,并设置用于当前一组会议的标识,否则拒绝召开当前一组会议,从而能灵活有效地调度系统资源,使系统中多个媒体处理芯片能共同运行,实现多组会议多画面两速率的图像处理; A, according to the present invention is a multi-number of pictures required video rate of each terminal's current session of a group of detected request resources and a set of current session, the number of media to give a chip set session currently held required, and with the number of chip media processing system in the idle state, and determines whether the system resources to meet the needs of the current held a group meeting, if appropriate allocation of resources is satisfied, and is provided for identifying a set of current session, or refuse a currently held group meeting, which can flexibly and effectively scheduling system resources, the system in the plurality of media processing chip can operate together two multi-rate multi-group meeting picture image processing;

B、 本发明中用于调度资源的三维数组表能根据软硬件能力系数的变化而进行适当地调整,所以具有良好的扩展性。 B, the present invention is a three-dimensional array table for scheduling of resources can be performed according to a change of hardware capability coefficient is appropriately adjusted, it has good scalability.

附图说明 BRIEF DESCRIPTION

6图1是会议电视系统中多画面的常见样式和大小画面布局情况示意图; 图2是本发明中1画面2速率情况下的三维数组表; 图3是本发明中2画面2速率情况下的三维数组表; 图4是本发明中3画面2速率情况下的三维数组表; 图5是本发明中4画面2速率情况下的三维数组表; 图6是本发明中4+1画面2速率情况下的三维数组表; 图7是本发明中5+1画面2速率情况下的三维数组表; 图8是本发明中9画面2速率情况下的三维数组表; 图9是本发明中16画面2速率情况下的三维数组表; 图10是本发明的实施例中DSP芯片的视频解码能力参数表; 图11是本发明的实施例中DSP芯片的视频编码能力参数表; 图12是根据本发明的实施例对当前会议进行资源调度的流程图; 图13是根据本发明的实施例关闭会议释放资源的流程图; 图14是根据本发明的实施例,在采用3片媒体处理器情况下芯片 6 FIG. 1 is a schematic view of a video conferencing system common style multi-screen and a size of a screen layout case; FIG. 2 is the present invention, three-dimensional array in Table 1 under the screen 2 rate case; FIG. 3 is the present invention in the second screen 2 rate case three-dimensional array table; FIG. 4 is a three-dimensional array table in the present invention, screen 3 rate case; FIG. 5 is a three-dimensional array table in the present invention, four panel 2 rate case; FIG. 6 is the present invention is 4 + 1 screen 2 rate three-dimensional array table in a case; FIG. 7 is a three-dimensional array table in the present invention is 5 + 1 screen 2 rate case; FIG. 8 is the present invention is a three-dimensional array table at 9 screen 2 rate case; FIG. 9 is the present invention 16 three-dimensional array under the table screen 2 rate case; FIG. 10 is a video decoding capabilities datasheets embodiment of the present invention, the DSP chip; FIG. 11 is a video encoder capability parameter table embodiment of the present invention, the DSP chip; FIG. 12 is a embodiments of the present invention on the current resource scheduling meetings flowchart; FIG. 13 is a flowchart of the release of resources according to embodiments of the present session closing invention; Figure 14 is an embodiment of the present invention, in the case of using a media processor 3 under chips 互连的硬件连线示意图。 Hardwired interconnected FIG.

具体实施方式 Detailed ways

为深入了解本发明,下面结合附图及具体实施例对本发明进行详细说明。 To better understand the present invention, the following specific embodiments of the present invention is described in detail in conjunction with the accompanying drawings and.

本发明的解决途径可以通过检测到的各终端的视频速率和请求资源的会议所需多画面数,按照媒体处理芯片的编解码能力及相应参数实时计算得到召开当前会议所需的i某体处理芯片的数目来完成对系统资源的调度,也可以先建立一个基于多画面、第一视频速率和第二视频速率的三维数组表,然后根据请求资源的当前会议的具体情况(如需要的多画面数、各终端的视频速率等)查询该三维数组表,得到召开当前会议所需的々某体处理芯片的数目, 然后通过与系统中可用资源进行比较,判定是否可召开当前会议,从而完成对系统资源的调度。 Solutions according to the present invention can detect the rate of the video terminal to request and the number of conference resources required for multi-screen, according to the media processing capacity of the codec chip and the corresponding parameters calculated in real time to obtain a processed material required for the current session held i the number of chips to complete the scheduling of system resources to establish a multi-screen may be based on a multi-screen, three-dimensional array and a first video rate table of the second video rate, and then based on the current situation of the meeting requested resource (if desired the number, rate, etc. of each terminal video) querying the three-dimensional array table to obtain a number of chip-processing currently required 々 meeting held, and by comparison with the resources available in the system, it is determined whether the current session may be held, thus completing the scheduling system resources. 由于采用三维数组表的方法更为便于用户使用,因此如下的实施例将针对后一种解决途径进行详细描述。 Since the three-dimensional array table method is more user-friendly, and therefore the following embodiments will be described in detail for the latter solution. 然而,对于前一种解决途径,可参照三维数组表的生成方法(即三维数组表中资源数目的赋值方法) 或规则,由硬件执行相应的程序实时计算得到召开会议所需的资源,然后通过与系统中可用资源进行比较,判定是否可召开当前会议,从而完成对系统资源的调度。 However, a solution for the first route, method of generating three-dimensional array can be referred to the table (i.e., three-dimensional array of the table number of resource assignment method), or rules corresponding program executed by hardware resources required to obtain real-time computing conference, then compared with the resources available in the system, whether or not the current meeting may be convened to complete the scheduling of system resources.

本发明的实施例中,因为需要建立一个用于调度资源的基于多画面数、 第一视频速率和第二视频速率的三维数组表,且系统在运行过程中需要对该三维数组表进行查询,所以需要预先考虑尽可能多的情况,假定媒体处理芯 Embodiments of the present invention, because of the need to establish a three-dimensional array table for scheduling resources based on the number of multi-picture, the first and second video rate video rate, and the system needs to query the table in the three-dimensional array during operation, so it is necessary to anticipate as much as possible, the assumed media processing core

片的数目为n个,采用的媒体处理芯片为DSP芯片(n>=2);多组会议的数目假定为i组(i>=2);多画面假定为j个画面混合(l=<j<=16),会议电视系统中多画面的常见样式和大小画面布局情况如图1所示,自上向下、自左向右分别^表1画面、2画面、2+1画面U&表2小画面加l大画面)、4画面、4+1画面(4戈表4小画面力口1大画面)、5十1画面(4戈表5 小画面力o 1大画面)、4+3画面(«表4小画面力口3大画面)、7+1画面表7小画面力o 1大画面)、9画面、8+2画面(«表8小画面力。2大画面)、 12+1画面(代表12小画面加1大画面)、16画面等12种。 The number of sheets is n, media processing chip as DSP chip (n> = 2); Number plurality of sets of session is assumed to group i (i> = 2); multi-screen is assumed to be j-th picture mixing (l = < j <= 16), the video conference system common style and size of the multi-screen layout of the screen shown in Figure 1, from the top down, respectively, from left to right screen ^ table 1, the screen 2, the screen 1 2 + U & tables 2 small picture plus l large screen), 4 screens, 4 + 1 screen (4 Ge table 4 small image force opening a large screen), 5 + 1 screen (4 Ge table 5 small image force O a large screen), 4 + screen 3 ( «table 3 port 4 small image force large screen), the screen 7 table 7 + 1 O 1 small image force is large screen), the screen 9, a screen 8 + 2 (« small picture table 8 .2 force large screen), 12 + 1 12 kinds of picture (plus a small picture 12 on behalf of a large screen), the screen 16 and the like.

在本发明中,三维数组表的三个变量分别指多画面数、第一视频速率和第二视频速率。 In the present invention, three-dimensional array table are variable index multi-picture, the first and the second video rate video rate. 所以,为了便于建立和查询,需要将多画面数进行抽象,例如1画面抽象对应的元素值为0, 2画面抽象对应的元素值为1, 3画面抽象对应的元素值为2, 4画面抽象对应的元素值为3, 4+1画面抽象对应的元素值为4, 5+1画面抽象对应的元素值为5, 9画面抽象对应的元素值为6, 16 画面抽象对应的元素值为7等,共8种,而7+l、 4+3按照9画面计算资源, 8+2、 12+1按照16画面计算资源。 Therefore, in order to facilitate the establishment and queries, the number of multi-picture needs to be abstracted, for example, a picture element value of 0 corresponding to the abstract, the abstract corresponding to the picture elements 2 is 1, 3 picture elements corresponding to the abstract value of 2, 4 abstract screen corresponding element value of 3, 4 + 1 corresponding picture element value is the abstract 4, 5 + 1 corresponding picture element value is the abstract 5, 9 picture elements corresponding to the abstract value of 6, 16 corresponding to the picture element value is 7 abstract , a total of eight kinds, and 7 + l, 4 + 3 in accordance with the computing resource screen 9, 2 + 8, 12 + 1 calculated as 16 screen resources. 因此,本实施例中建立的三维数组表中涉及多画面数的变量为8个,即共有8张以第一视频速率和第二视频速率为变量的数组表,如图2至图9所示。 Accordingly, the present embodiment variable to establish three-dimensional array in Table embodiment relates to a multi-screen number is eight, i.e., a total of eight video at a first rate and the second video rate is variable array table, as shown in FIG. 2 to FIG. 9 .

此外,还需要将会议各终端的视频速率也进行高度抽象,视频速率包括视频格式和视频码率的两部分信息,第一视频速率定义为系统检测当前一组会议的各终端视频速率时所检测到的第一个视频速率,而第二视频速率定义为系统检测到的与第一视频速率不同的视频速率,若检测到三个或三个以上互不相同的视频速率,则系统判定为用户数据库配置出错, Furthermore detected, the required rate for each video conference terminal is also highly abstract, two pieces of information including video rate and the video bit rate of the video format, the first video rate is defined as the video system for detecting the current rate of each terminal of a group meeting rate to the first video and the second video rate is defined as the system detects the first video rate different video rates, if it is detected three or more mutually different video rate, the system determines that the user database configuration errors,

在本实施例中,需要针对不同视频速率的视频格式进行抽象,例如对于第一视频速率,视频格式H263—QCIF抽象对应的元素值为0, H263j:iF抽象对应的元素值为1, H263一4CIF抽象对应的元素值为2, H264—CIF抽象对应的元素值为3,如图2至图9所示的H263—QCIF1 ( 0 ) 、 H263—CIF1 (1)、 H263—4CIF1 (2) 、 H264_CIF1 (3),共4种视频速率。 In the present embodiment, the required video rate of abstraction for different video formats, for example, the first video rate, video format H263-QCIF abstract corresponding element value 0, H263j: iF abstract corresponding element value is 1, H263 a abstract 4CIF corresponding element value 2, H264-CIF abstract value corresponding element 3, as shown in FIG. 2 to FIG. 9 H263-QCIF1 (0), H263-CIF1 (1), H263-4CIF1 (2), H264_CIF1 (3), a total of four kinds of video rate. 而对于第二视频速率,无第二视频速率的情况抽象对应的元素值为0,视频格式H263一QCIF 抽象对应的元素值为1, H263一CIF抽象对应的元素值为2, H263—4CIF抽象对应的元素值为3, H264—CIF抽象对应的元素值为4,如图2至图9所示的无第二视频速率(0) 、 H263—QCIF2 ( 1 ) 、 H263_CIF2 (2) 、 H263—4CIF2 (3 ) 、 H264—CIF2 (4 ),共5种一见频速率。 Rate for the second video, the second video rate is no element corresponding to the case where the abstract is 0, a QCIF video format H263 abstract corresponding element value. 1, a CIF H263 abstract corresponding element value is 2, H263-4CIF Abstract corresponding element value is 3, H264-CIF abstract corresponding element value of 4, no second video rate as shown in FIG. 2 to FIG. 9 (0), H263-QCIF2 (1), H263_CIF2 (2), H263- 4CIF2 (3), H264-CIF2 (4), a total of 5 see frequency rate.

在当前的技术条件下,DSP芯片对不同的码率和视频格式的处理能力并不相同,本实施例充分考虑到当前常用的4种视频格式,以及当前常用的视频码率(会议终端的接入视频码率一般在1M以下,常用为384kbps和768kbps),如图IO所示,其表格赋值表示一片DSP芯片能处理多少路会议终端的图像数据解码,例如,在视频码率1M以下且视频格式为H263—QCIF的情况, 一片DSP芯片能解码8路会议终端的图像数据;如图11所示,其表格赋值表示一片DSP芯片能处理多少路会议终端的图像数据编码,例如,在视频码率1M以下且视频格式为H263一QCIF的情况, 一片DSP芯片能编码4路会议终端的图像数据,图IO和图11中表格内的其它赋值以此类推。 In the current technical conditions, the DSP chip rate is not the same for different video formats and processing capabilities, then the present embodiment, fully taking into account the current four common video formats, and the current common video rate (the conference terminal the video bit rate is generally less 1M, 384kbps and 768kbps is used), as shown in FIG IO, which is a table showing assignment of image data decoding DSP chip can conference terminals process the number of road, for example, in the following video bit rate and the video 1M H263-QCIF format is the case, a DSP chip can decode the image data of the conference terminal 8; 11, which is a table showing assignment of image data encoding DSP chip can conference terminal processes the number of road, for example, in a video code of 1M or less and a video format as QCIF H263 case, the DSP chip can encode a 4-way conference terminal image data, and so other assignment in FIG. 11 and FIG IO form.

对于图2至图9中表格内的赋值(即代表DSP芯片数目),需要参照图10和图11中所示的DSP芯片的视频解码和编码能力参数表来进行计算, 此外还需要加上适当视频缩放滤波系数和视频合成系数,具体方法如下所述: For the assignment (i.e., representing the number of DSP chips) in the table in FIG. 9 to FIG. 2, 10 and need DSP chip shown in FIG. 11 in the video encoding and decoding capabilities to be calculated parameter table, also need to add the appropriate video scaling coefficient synthesis filter coefficients and video, the specific method is as follows:

首先,根据多画面数确定解码3各数,例如,16路H263—CIF 384kbps或16路H263—QCIF768kbps,或它们之间的混合会议,由于在多画面情况下, 需要多画面轮训,应当预留最大资源才能实现轮训,因此资源估算的解码路数以16路H263j:iF384kbps为准。 First, the number of multi-picture decoder 3 are each determined number, e.g., 16 or H263-CIF 384kbps 16 H263-QCIF768kbps, or mixed session between them, since the multi-view case, the multi-picture rotation, it should be reserved resources to achieve maximum rotation, and therefore the resource estimate to decode large ones 16 H263j: iF384kbps prevail.

其次,根据不同视频速率的终端种类数确定编码路数,上面的例子需要1路H263—QCIF 768kbps和1路H263—CIF 384kbps编码。 Secondly, the coding is determined according to the number of types of large ones different terminal video rate, the above example requires H263-QCIF 768kbps channel 1 and a channel encoding H263-CIF 384kbps.

然后,确定视频缩放滤波系数和视频合成系数, 一般来说取值范围在 Then, it is determined video scaling coefficient synthesis filter coefficients and video, in general, in the range

90.3~0.5之间。 Between 90.3 to 0.5.

最后,才艮据上述的几种参数,可计算出三维数组表中相应元素的赋值(即在上述多画面数、视频速率的情况下,召开当前会议需要的DSP芯片数目): 16路H263—CIF 384kbps解码需要16 x 1/8 = 2片(其中1/8是指如图10所示的DSP芯片视频解码能力参数表内与视频码率1M以下且视频格式为H263一CIF的情况相对应元素的值);1路H263—QCIF 768kbps和1路H263—CIF 384kbps编码需要1x1/4+1x1/4 = 0.5片(其中前后2个1/4分别是指DSP芯片的视频编码能力参数表内与在视频码率1M以下且视频格式为H263—QCIF的情况下和与在一见频码率1M以下JU见频才各式为H263—CIF 的情况下相对应元素的值);加上0.3的视频缩放滤波系数和视频合成系数, 总共需要2+0.5+0.3=2.8片,实际分配3片以提高软件运行的可靠性,因此在图9中(图9是16画面2速率情况下的三维数组表),视频速率1 (第一视频速率)为H263—Q Finally, according to the above-described Gen only several parameters, calculate the three-dimensional array of elements corresponding to the assignment table (i.e., in the case where the number of the multi-screen video rate, the number of DSP chips currently held meeting required): 16 H263- the CIF 384kbps decoding requires 16 x 1/8 = 2 tablets (where 1/8 is shown in FIG. 10 refers to the video decoding DSP chip and the video bit rate capability parameter table 1M or less and a case where the H263 video format corresponding to a CIF value of the element); H263-QCIF 768kbps channel 1 and a channel encoding H263-CIF 384kbps requires 1x1 / 4 + 1x1 / 4 = 0.5 sheet (either before or after 2 1/4 parameter table refer respectively to the DSP chip video encoding capability 1M or less and the video bit rate and the video format is a case where the H263-QCIF and see JU see a frequency in the frequency rate was 1M kinds H263-CIF case where the value of the corresponding element); plus 0.3 16 a three-dimensional picture in the case of 2 speed video scaling coefficient synthesis filter coefficients and video, a total of 2 + 0.5 + 0.3 = 2.8, the actual distribution of 3 to improve the reliability of the software running, and therefore in FIG. 9 (FIG. 9 table array), a video rate (a first video rate) H263-Q CIFl( 0 )和视频速率2(第二视频速率为)H263—CIF2 (2 )所对应的元素赋值为3,或是视频速率1 (第一视频速率)为H263_CIF1 (1 )和^L频速率2 (第二视频速率为)H263—QCIF2 (1)所对应的元素赋值为3。 CIFl (0), and video rate 2 (second video rate) H263-CIF2 (2) assigned to elements corresponding to 3, or a video rate (a first video rate) H263_CIF1 (1) and the frequency rate ^ L 2 (second video rate) H263-QCIF2 (1) corresponding to the element 3 is assigned.

根据上述的方法或规则,可以完成图2至图9中各数组元素的赋值,从而建立所述用于调度资源的基于多画面数、第一视频速率和第二视频速率的三维数组表,即图2至图9分别列举出1画面、2画面、2+1画面、4画面、 4+1画面、5+l画面、9画面、16画面等在2速率情况下召开会议所需的DSP 芯片数目。 The above-described methods or rules can complete the assignment of each array element in FIG. 2 to FIG. 9, based on the number to establish a multi-picture, video rate and a first three-dimensional array table for the second video rate scheduling resources, i.e. Figures 2 to 9, respectively, include a screen, a screen 2, 2 + 1 picture screen 4, the screen 1 + 4, 5 + l screen, the screen 9, 16 meeting at a screen or the like where the desired rate of 2 DSP chip number.

所述三维数组表可预先生成,当会议电视系统运行后加载至多点控制单元(MCU)的寄存器中,这样可以方便用户操作。 The three-dimensional array table may be generated in advance, up to the point when the load control unit (MCU) register running TV conference system, so that users can easily operate. 此外,该三维数组表可以根据软硬件能力系数的变化(即媒体处理芯片的处理能力,包括硬件方面和软件方面)而进行适当调整,因此具体良好的扩展性。 In addition, the three-dimensional array table may be appropriately adjusted according to a change of hardware capability coefficient (i.e., chip media processing capability, including hardware and software), and therefore particularly good scalability.

下面将结合图12,进一步详细说明根据本发明的实施例对当前一组会议进行资源调度的具体流程:首先系统初始化,建立用于表示系统中n个媒体处理芯片的当前使用情况的数组Used[n],并将其初始化为Used[n]= "0xff Oxff……0xff,,代表n个媒体处理芯片都处于空闲状态;并且加载预先建 Below in connection with FIG. 12, described in further detail specific procedures for resource scheduling according to the current set of session embodiment of the present invention: first system initialization, a system for establishing an array Used in current usage of media processing chip n [ n], and initializes Used [n] = "0xff Oxff ...... 0xff ,, n represents the media processing chip are idle; construction and preloaded

10立的用于调度资源的三维数组表至MCU的寄存器中; 步骤101 ,开始当前会议,会议ID为ConfID; 10 three-dimensional array table established for scheduling resources to the MCU register; step 101, the current conference starts, the conference ID is ConfID;

步骤102,当前会议通过MCU的网管系统中的会议召集用户页面向MC Step 102, the current session by the network management system in the MCU conference call to User Page MC

发起^L频资源i會求; ^ L launch frequency resources i will ask;

步骤103, MC从请求消息中获取当前会议所需的多画面数; 步骤104,系统检测到视频速率1 (第一视频速率),并将其抽象赋值; 步骤105,系统检测到视频速率2 (第二视频速率),并将其抽象赋值; 步骤106, MC根据会议终端提供的多画面数、抽象赋值后的视频速率l Step 103, MC message acquiring request from the picture number of the current multi-session required; step 104, the system detects a rate of the video (the first video rate), and assigns it the abstract; step 105, the system detects the video rate 2 ( a second video rate), and abstract assignment; step 106, MC conference terminal according to a multi-number of pictures provided by the video rate assignment after abstraction l

和视频速率2对三维数组表进行查询,得到召开当前会议需要的媒体处理芯 And two pairs of three-dimensional array of video rate table query to obtain core media processing required for the convening of the current meeting

片数目al; Al number of slices;

步骤107, MC计算系统中剩下的处于空闲状态的i某体处理芯片数目, 该数目等于数组Used[n]中元素为0xff的数目b 1; 107, the number of steps remaining MC computing system in an idle state of a i-processing chip, which number is equal to the array Used [n] is the number of elements to 0xff b 1;

步骤108, MC判断召开当前会议需要的々某体处理芯片数目al是否小于或等于系统中剩下的处于空闲状态的媒体处理芯片数目M,若小于或等于, 执行步骤109,否则执行步骤110; Step 108, MC determines the current conference held in need thereof a number of processing chips 々 al system is less than or equal to the number of media M processing chip remaining in an idle state, if less than or equal to, step 109, otherwise step 110 is performed;

步骤109, al <=M的情况说明当前视频资源足够,请求资源的当前本组会议可以成功召开,MC将被使用々某体处理芯片对应的当前使用状态的数组元素赋值为本组会议的会议ID (ConflD),计算当前剩下的处于空闲状态的媒体处理芯片数目b2, b2 = bl-al,执行步骤lll; Step 109, al <= M in the case of a current video DESCRIPTION sufficient resources, the current resource request can be successfully held in this group session, the MC session will be used by a processing chip body corresponding to the current user usage state 々 array element assignment-based group session ID (ConflD), calculates the current remaining number of media processing chips in the idle state b2, b2 = bl-al, LLL step;

步骤IIO,返回相应的消息,说明当前视频资源不足,拒绝召开请求资源的当前本组会议; The IIO step, return appropriate messages to indicate the current lack of video assets currently held reject this group session requested resources;

步骤lll,结束。 Step lll, end.

其中,第一视频速率和第二视频速率的抽象赋值方法是:对请求资源的会议中所有的终端逐个检测,第一个终端视频速率抽象成一个word型数字, 例如H263—CIF 384kbps抽象为0x0106,其中高字节代表编解码格式H263一CIF,低字节代表码率384kbps,同时将第一视频速率的数组元素赋值为1;接着对剩下来的终端逐个计算其视频速率值,若为0x0106,表示与第一个终端视频速率值相同,否则根据视频速率值计算其第二视频速率的值, 例如H263—4CIF 384kbps为0x0206,此时第二视频速率的数组元素赋值为3; 此时若再出现非0x0106和0x0206,则由于大于两速率,视频资源不足,表 Wherein the first video rate and abstract assignment method of the second video rate is: resource meeting request all terminals individually detected, a first video terminal to a word rate digital abstract, e.g. H263-CIF 384kbps abstract 0x0106 wherein the high byte represents a code format H263 CIF, low byte represents a code rate 384kbps, while the array element assigned to a first video rate 1; Next, the remaining video terminal individually calculated rate value, if it is 0x0106 , a first terminal represents the same video rate value, or the value of a second video rate is calculated according to a video rate value, e.g. H263-4CIF 384kbps is 0x0206, the array element at this time the second video rate is 3 assignments; time if recurrence of non-0x0106 and 0x0206, because the rate of greater than two, lack of video resources, table

ii示用户配置数据库出错。 ii diagram user configuration database error.

若需要同时召开i组会议,系统对请求视频资源的下一组会议进行资源调度,重复图12所示的上述步骤,直至系统所需同时召开的多组会议的资源调度完成。 If desired group meeting held at the same time i, the system requests the next set of video conference resource scheduling resource, repeating the steps shown in FIG. 12, multiple groups of resource scheduling meetings held until required by the system at the same time to complete. 此时,召开多组会议需要的媒体处理芯片的值应当小于或等于 In this case, a plurality of sets meeting held media processing chip required values ​​should be less than or equal to

n,即al+a2+...+ai<=n。 n, i.e., al + a2 + ... + ai <= n.

图13是根据本发明的实施例关闭会议释放资源的具体流程,包括如下步骤: FIG 13 is a close session specific process for releasing resources in accordance with an embodiment of the present invention, comprising the steps of:

步骤201,关闭会议,会议ID为ConfID; Step 201, closing the meeting, the meeting ID is ConfID;

步骤202, MC将数组Used[n]中的元素值为ConflD的赋值为0xff,释放资源; Step 202, MC array Used [n] is assigned to the elements of the value ConflD 0xff, release of resources;

步骤203,计算当前系统剩下的媒体处理芯片数目b2, b2 = bl+al, bl 为关闭会议前系统中剩下的处于空闲状态的媒体处理芯片的数目,al为关闭会议前数组Used[n]中的元素值为ConflD的元素数目; Step 203, the system calculates the current remaining number of media processing chip b2, b2 = bl + al, bl is the number of off-chip media processing idle before the rest of the conference system, before closing the session for the array Al Used [n ] the elements of the value of the number of elements ConflD;

步骤204,结束。 Step 204 ends.

图14示意当某系统使用的媒体处理器个数为3时的硬件连线示意图(三角形连线),当系统使用的媒体处理器个数为4、 5、 6等情况时,硬件连线分别为四边形、五边形、六边形等环形或对角连线,对于本^^支术领域中的熟练人员,这应当是显而易见的。 Figure 14 illustrates a processor system when the number of media used is a schematic diagram of the hardware connections (connecting triangles) at 3, when the number of media processor system 4, 5, 6, etc., are hardwired quadrangular, pentagonal, hexagonal or diagonal annular connection with the present technique ^^ branched skilled in the art, it should be apparent.

综上所述,本实施例是把预先想到的所有多画面组合需要的DSP芯片数目制成一张三维数组表,当召开会议需要多画面资源时,根据会议能力查表决定需要多少个DSP芯片,再查看当前系统剩下的空闲DSP芯片数目及其组合情况来决定当前会议申请能否被允许召开。 As described above, the present embodiment is made of a three-dimensional array table number of the multi-screen DSP chip all conceivable combinations of previously required, when the conference need more resources picture, look-up table according to the number of DSP chips require the ability to determine Conference and then view the current system remaining idle, and the number of DSP chip combinations to determine the current meeting whether an application is allowed to convene. 如此类推下一组会议的能否召开,爿t人而实现多组会议的MCU多画面处理。 So on the possibility of convening the next group meeting, valves t people and multi-group meeting of the MCU multi-picture deal.

本方法灵活简便,既方便用户使用,而且可靠性好,具有良好的扩展性。 This method is simple and flexible, not only user-friendly, and good reliability, excellent scalability.

12 12

Claims (10)

1、一种在会议电视系统中实现图像处理的资源调度方法,包括如下步骤:(a)系统初始化,并将系统中各媒体处理芯片的当前使用情况设置为空闲状态;(b)系统检测请求视频资源的当前一组会议的各终端的第一视频速率和第二视频速率,并且根据所检测到的视频速率和所述当前一组会议所需的多画面数得到召开所述当前一组会议需要的媒体处理芯片数目,所述第一视频速率为系统检测当前一组会议的各终端视频速率时所检测到的第一个视频速率,而所述第二视频速率为系统检测到的与第一视频速率不同的视频速率;(c)计算系统中处于空闲状态的媒体处理芯片的数目,判断步骤(b)中所得到的召开当前一组会议需要的媒体处理芯片数目是否小于或等于当前系统中处于空闲状态的媒体处理芯片的数目,若小于或等于,执行步骤(d),否则执行步骤(e);(d)将被 1, an implementation in a video conference system resource scheduling method for image processing, comprising the steps of: (a) initializing the system, and the system currently used in the case of the media processing chip is set to an idle state; (b) the system detects a request a first video and a second video rate of the current rate of each terminal of a group of video conference resources, and to obtain a group meeting held in accordance with the current number of the required multi-picture video rate of the detected current and the set of session the number of chips required for media processing, the first video rate is the video system for detecting the current rate of each terminal of a group meeting the detected rate of the first video and the second video rate is detected by the system and the second different a video rate video rate; the number of media processing chips in the system in an idle state (c) calculating the number of media processing chip is determined in step (b) obtained in the held current set meeting needs is less than or equal to the current system the number of media processing chip in an idle state, if less than or equal to, step (D), otherwise step (e); (d) will be 所述当前一组会议使用的各媒体处理芯片的当前使用情况设置为所述当前一组会议的标识,并且计算召开当前会议后系统中剩下的处于空闲状态的媒体处理芯片的数目,执行步骤(f);(e)返回相应的消息,说明当前视频资源不足,拒绝召开所述当前一组会议;(f)系统对请求视频资源的下一组会议进行资源调度,重复步骤(b)至(e),直至系统所需同时召开的多组会议的资源调度完成。 Current usage session using the current set of the media processing chip is provided to set the current session identifier, the number of remaining media processing chips in the idle state after the current conference system and calculates held step (f); (e) return an appropriate message to indicate the current lack of video resources, reject the current set of meetings held; (f) the system requests the next set of video conference resources for resource scheduling, repeating steps (b) to (e), multi-resource scheduling group meetings held at the same time until the system is required to complete.
2、 根据权利要求1所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:当系统初始化时,构造一个用于调度资源的基于多画面数、第一视频速率和第二视频速率的三维数组表,并且存储所述三维数组表。 2. The image processing resource scheduling method implemented in the television conference system according to claim 1, wherein: when the system is initialized, a configuration based on the number of multi-picture, the first and second video rate scheduling of resources three-dimensional array of video rate table, and storing the three-dimensional array table.
3、 根据权利要求2所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:当系统检测当前一组会议的各终端视频速率时,^r测到的第一个视频速率设为第一视频速率,检测到的与第一视频速率不同的视频速率设为第二一见频速率,若检测到三个或三个以上互不相同的^L频速率,则返回视频资源不足,数据库配置出错的消息。 3. The image processing resource scheduling method implemented in the television conference system according to claim 2, wherein: each terminal when the system detects the current video rate of a group meeting, ^ r first measure to a video rate as a first video rate, detected by the first video rate is a second rate different from a video see-frequency rate, if it is detected three or more mutually different frequency rate ^ L, the video asset is returned lack of database configuration error messages.
4、 根据权利要求3所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:系统根据所检测到的第一视频速率、第二视频速率和当前一组会议所需的多画面数,查询所述三维数组表得到召开该组会议需要的媒体处理芯片数目。 4. The image processing resource scheduling method implemented in the television conference system according to claim 3, wherein: the system according to the detected first video rate, a second video rate and the desired current set of multi-session the number of pictures, the three-dimensional array table query to obtain the number of the set of media processing chip needs meeting held.
5、 根据权利要求2所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:构造所述用于调度资源的三维数组表的决定因素包括媒体处理芯片的视频解码能力,根据由多画面数决定的解码路数和媒体处理芯片的视频解码能力可计算得到相应的视频解码所需媒体处理芯片数。 5. The method of claim resource scheduling to achieve image processing in the television conference system according to claim 2, wherein: the determining factor for the configuration of three-dimensional array of resource scheduling table includes a video decoder chip media processing capability, according to large ones and the decoded media processing capacity of the video decoding chip is determined by the number of pictures calculated to give the corresponding plurality of video decoding number of chips required for media processing.
6、 根据权利要求5所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:构造所述用于调度资源的三维数组表的决定因素包括i某体处理芯片的视频编码能力,根据由不同视频速率的终端种类数决定的编码路数和媒体处理芯片的视频编码能力可计算得到相应的视频编码所需媒体处理芯片数。 6. The image processing resource scheduling method implemented in the television conference system according to claim 5, wherein: the determining factor for the configuration of a three-dimensional array table of the scheduled resource includes a video encoding capabilities of a chip body i the video encoding capacity determined by the number of types of terminals of different video rate encoding and media processing chip large ones calculated to give the corresponding video coding process media required number of chips.
7、 根据权利要求6所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:构造所述用于调度资源的三维数组表的决定因素包括视频缩放滤波系数和视频合成系数。 7. The image processing resource scheduling method implemented in the television conference system according to claim 6, wherein: the determining factor for the configuration of three-dimensional array of resource scheduling table includes video scaling coefficient synthesis filter coefficients and video.
8、 根据权利要求7所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:所述用于调度资源的三维数组表能根据软硬件能力系数的变化而进行适当地调整。 8, resource scheduling method according to claim realize image processing in the television conference system according to claim 7, wherein: said three-dimensional array table for scheduling of resources can be appropriately adjusted according to changes in hardware and software capacity factor.
9、 根据权利要求1所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:所述视频速率包括视频才各式和视频码率的信息。 9. The image processing resource scheduling method implemented in the television conference system according to claim 1, wherein: said video comprises a video rate and the video bit rate before a variety of information.
10、 根据权利要求1所述的在会议电视系统中实现图像处理的资源调度方法,其特征在于:当一组会议结束后,系统关用该组会议,将被该组会议使用的各媒体处理芯片的当前使用情况设置为空闲状态。 10. The image processing resource scheduling method implemented in the television conference system according to claim 1, wherein: when the end of a group session, the group session with the system off, the media will be used in the treatment group meetings the current usage of the chip set to the idle state.
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