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1.¿éÉ豸Çý¶¯µÄÄ£¿é¼ÓÔØÓëÐ¶ÔØ
1)¿éÉ豸Çý¶¯µÄÄ£¿é¼ÓÔØÍê³ÉµÄ¹¤×÷ÈçÏÂ:
Ø ·ÖÅä,³õʼ»¯ÇëÇó¶ÓÁÐ,°ó¶¨ÇëÇó¶ÓÁкÍÇëÇóº¯Êý
Ø ·ÖÅä,³õʼ»¯gendisk,¸øgendiskµÄmajor,fops,queueµÈ³ÉÔ±¸³Öµ,×îºóÌí¼Ógendisk.
Ø ×¢²á¿éÉ豸Çý¶¯.
´úÂë1:ʹÓÃblk_alloc_queueº¯ÊýÍê³É¿éÉ豸Çý¶¯µÄÄ£¿é¼ÓÔØÄ£°å
    static int __init xxx_init(void){
        //·ÖÅägendisk
        xxx_disks = alloc_disk(1);
        if(!xxx_disks){
            goto out;
        }
        //¿éÉ豸Çý¶¯×¢²á
        if(register_blkdev(xxx_MAJOR, "xxx"){
            err = -EIO;
            goto out;
        }
        //"ÇëÇó¶ÓÁÐ"·ÖÅä
        xxx_queue = blk_alloc_queue(GFP_KERNEL);
        if(!xxx_queue){
            goto out_queue;
        }
        blk_queue_make_request(xxx_queue, &xxx_make_request);//°ó¶¨"ÖÆÔìÇëÇó"º¯Êý
        blk_queue_hardsect_size(xxx_queue,xxx_blocksize);//¸æÖªÄÚºËÓ²¼þÉÈÇø³ß´ç
        //gendisk³õʼ»¯
        xxx_disks->major = xxx_MAJOR;
        xxx_disks->first_minor = 0


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TtyÕâ¸öÃû³Æ ......

Ubuntu Linux Èí¼þѰÕÒ/°²×°/Ð¶ÔØ ͼÎÄÏê½â½Ì³Ì

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¡¡¡¡# find / -name testing &
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Ø  ÏÂÔØApache2.2.4 µÄѹËõ°ü£¬ÎļþÃûΪ£ºApache21.tar.gz £»
Ø  ÔÚ /usr/local Ŀ¼Ï½âѹ´ËѹËõÎļþ£º
 [root@wxr local]# tar xzvf Apache21.tar.gz
Ö®ºóÉú³ÉÒ»¸öÃûΪ“httpd-2.2.4 ”µÄÎļþ¼Ð£»
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linuxÏÂffmpeg ÊÖ»úÊÓÆµ×ª»»×ܽá

ffmpeg°æ±¾:0.5.1 flv -> mp4  ->3gp
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./ffmpeg -i ÊÓÆµÎļþ -y -ss ½ØÍ¼Ê±¼ä -vframes 1 -f image2 -s 128x96 Ä¿±êÎļþÃû;
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./ffmpeg -i out.3gp -ss 00:00:00 -t 00:00:10 -s qcif -acodec copy -vcodec copy -y preview.3gp
#ת»»16:9 flvÊÓÆµµ½ 4:3µÄmp4ÊÓÆµ
ffmpeg -i src. ......
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