Android 蓝牙AVRCP功能的实现

1、Android 蓝牙AVRCP功能的实现作者:Macro LiuAVRCP的按按键定义:sdkemmulatoorkeyymapsAVRCPP.klkey 2000 MEEDIA_PPLAY_PPAUSE WAAKEkey 2011 MEEDIA_PPLAY_PPAUSE WAAKEkey 1666 MEEDIA_SSTOP WAAKEkey 1633 MEEDIA_NNEXT WAAKEkey 1655 MEEDIA_PPREVIOOUS WAAKEkey 1688 MEEDIA_RREWINDD WAAKEkey 2088 MEEDIA_FFAST_FFORWARRD WAAKEBCM(b

2、rooadcomm)宏定义需要打打开:BOARD_HHAVE_BBLUETOOOTH_BBCM := trueeBT音频控制的的代码externaalbluuetootthbluuezauudioccontrool.c(1) 按键的的MAPstatic strucct const char *namee;uint8_t avrrcp;uint166_t uiinput; key_mmap = PLAAY,PLAY_OP,KEY_PPLAYCDD , STOOP,STOP_OP,KEY_SSTOPCDD , PAUUSE,PAUSEE_OP,KEY_PPAUSECCD , FORRWARD,FO

3、RWAARD_OPP,KEY_NNEXTSOONG , BACCKWARDD,BACKWWARD_OOP,KEY_PPREVIOOUSSONNG , REWWIND,REWINND_OP,KEY_RREWINDD , FASST FORRWARD,FAST_FORWAARD_OPP,KEY_FFASTFOORWARDD , NULLL ;(2) 按键处处理static void handlle_pannel_paassthrrough(strucct conntrol *conttrol, for (ii = 0; key_mapii.namme != NULL; i+) uint88_t k

4、eey_quiirks;if (operaands00 & 00 x7F) != key_mapii.avrrcp)conttinue;DBG(AVRCPP: %s %s, key_e, staatus);key_qquirkss = coontroll-keyy_quirrkskeey_mappi.aavrcp;if (kkey_quuirks & QUIIRK_NOO_RELEEASE) if (!presssed) DBGG(AVRRCP: IIgnoriing reeleasee);breeak;DBG(AVRCCP: trreatinng keyy presss

5、as presss + reeleasee);sendd_key(contrrol-uuinputt, keyy_mapi.uiinput, 1);sendd_key(contrrol-uuinputt, keyy_mapi.uiinput, 0);breaak;send_key(ccontrool-uiinput, key_mapii.uinnput, presssed);breakk;HCIDUMPP数据分析以Sony耳机机DRC-BBT15为例例#adb shhell#hcidummp X左键: ACL ddata: handlle 12 flagss 0 x022 dlenn 12 L

6、2CCAP(d): cidd 0 x00042 leen 8 psm 00 00000: 30 111 0e 000 48 7c 4c 00 0.H|L. HCI CCommannd: Exxit Snniff MMode (0 x02|0 x00004) pllen 2 0000: 0c 00 . HCI EEvent: Max Slotss Channge (00 x1b) plen 3 0000: 0c 00 05 . HCI EEvent: Modee Channge (00 x14) plen 6 0000: 00 00c 00 00 000 00 . HCI EEvent: Com

7、mmand SStatuss (0 x00f) pllen 4 0000: 0c 01 04 088 . ACL ddata: handlle 12 flagss 0 x022 dlenn 12 L2CCAP(d): cidd 0 x00042 leen 8 psm 00 00000: 40 111 0e 000 48 7c cc 00 .H|? HCI EEvent: Numbber off Comppletedd Packkets (0 x13) plenn 5 0000: 01 00c 00 02 000 .播放/暂停: ACL ddata: handlle 12 flagss 0 x0

8、22 dlenn 12 L2CCAP(d): cidd 0 x00042 leen 8 psm 00 00000: 50 111 0e 000 48 7c 4b 00 PP.H|K. ACL ddata: handlle 12 flagss 0 x022 dlenn 12 L2CCAP(d): cidd 0 x00042 leen 8 psm 00 00000: 60 111 0e 000 48 7c cb 00 .H|? HCI EEvent: Numbber off Comppletedd Packkets (0 x13) plenn 5 0000: 01 00c 00 02 000 .右

9、键: ACL ddata: handlle 12 flagss 0 x022 dlenn 12 L2CCAP(d): cidd 0 x00042 leen 8 psm 00 00000: 70 111 0e 000 48 7c 46 00 pp.H|F. ACL ddata: handlle 12 flagss 0 x022 dlenn 12 L2CCAP(d): cidd 0 x00042 leen 8 psm 00 00000: 80 111 0e 000 48 7c c6 00 .H|? HCI EEvent: Numbber off Comppletedd Packkets (0 x1

10、3) plenn 5 0000: 01 00c 00 02 000 . HCI EEvent: Max Slotss Channge (00 x1b) plen 3 0000: 0c 00 01 . HCI EEvent: Modee Channge (00 x14) plen 6 0000: 00 00c 00 02 c8 00 .?然后将conttrol.cc的日志打印出来来:按一次”“播放放/暂停键”:D/ACRVPP ( 237): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 237): opeerandss0 = 46 对应PAAUSE_O

11、OPD/ACRVPP ( 237): keyy_quirrks = 0, prressedd = 1按按键按下D/ACRVPP ( 237): conntrol-uinpput = ffffffffe,ssend_kkey = 201对应应MEDIAA_PLAYY_PAUSSED/ACRVPP ( 237): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 237): opeerandss0 = c6 (= 0 xx46 0 x80 表示按键释释放了)D/ACRVPP ( 237): keyy_quirrks = 0, prressedd = 0按按键释

12、放D/ACRVPP ( 237): conntrol-uinpput = ffffffffe,ssend_kkey = 201 对对应MEDIIA_PLAAY_PAUUSE再按一次”“播播放/暂停键键”:D/ACRVPP ( 237): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 237): opeerandss0 = 44 对应PLLAY_OPPD/ACRVPP ( 237): keyy_quirrks = 0, prressedd = 1 按键按按下D/ACRVPP ( 237): conntrol-uinpput = ffffffffe,sse

13、nd_kkey = 200 对应MEDDIA_PLLAY_PAAUSED/ACRVPP ( 237): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 237): opeerandss0 = c4D/ACRVPP ( 237): keyy_quirrks = 0, prressedd = 0 按键释放放D/ACRVPP ( 237): conntrol-uinpput = ffffffffe,ssend_kkey = 200 对对应MEDIIA_PLAAY_PAUUSEnext keey:D/ACRVPP ( 237): - handdle_paanel

14、_ppassthhroughh -D/ACRVPP ( 237): opeerandss0 = 4b对应应FORWAARD_OPPD/ACRVPP ( 237): keyy_quirrks = 0, prressedd = 1D/ACRVPP ( 237): conntrol-uinpput = ffffffffe,ssend_kkey = 163 对对应MEDIIA_NEXXTD/ACRVPP ( 237): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 237): opeerandss0 = cbD/ACRVPP ( 237): keyy_quir

15、rks = 0, prressedd = 0D/ACRVPP ( 237): conntrol-uinpput = ffffffffe,ssend_kkey = 163prev keey:D/ACRVPP ( 237): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 237): opeerandss0 = 4c 对应BACCKWARDD_OPD/ACRVPP ( 237): keyy_quirrks = 0, prressedd = 1D/ACRVPP ( 237): conntrol-uinpput = ffffffffe,ssend_kkey =

16、165 对对应D/ACRVPP ( 237): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 237): opeerandss0 = ccD/ACRVPP ( 237): keyy_quirrks = 0, prressedd = 0D/ACRVPP ( 237): conntrol-uinpput = ffffffffe,ssend_kkey = 165 MEDIAA_PREVVIOUS从上面可以看到到bluettooth的的协议栈bllueZ是没没有问题的将 frameeworkssbaseelibssuiEEventHHub.cppp的LOGG打

17、开，只能能看到了coontroll.c的日志志，EvenntHub的getEvvent完全全不响应观察所有logg日志发现，openDevice里也没有装载AVRCP.kl初步判断eveent有问题题event分析析：$ adb sshell# cd /pproc/bbus/innput# cat ddeviceescat devvices# cat ddeviceescat devvicesI: Bus=0019 Vendoor=00001 Prooduct=0001 Versiion=00001 参考s3c-keyypad.ccN: Namee=s3cc-keyppad inputt_de

18、v-namee = DEEVICE_NAME;P: Physs=s3c-keyypad/iinput00 inpput_deev-phhys = s3c-keyypad/iinput00;S: Sysffs=/deevicess/virttual/iinput/inputt0 virrtual的的?U: Uniqq=H: Handdlers=eventt0B: EV=33B: KEY=40004400 0I: Bus=0019 Vendoor=00001 Prooduct=0001 Versiion=01100参考vpadd_butttons.ccN: Namee=s3cc-einttkey

19、iinput-namee = pddev-nname, gpioo_keyss_deviice_= s3cc-einttkey,P: Physs=gpioo-keyss/inpuut0 inputt-phyys = gpio-keys/inputt0S: Sysffs=/deevicess/plattform/s3c-einntkey/inputt/inpuut1 为什么这里里是plattform目目录?U: Uniqq=H: Handdlers=eventt1B: EV=33B: KEY=1000000 0 00 0I: Bus=0018 Vendoor=00000

20、Prooduct=0000 Versiion=00000 参考amrii_ts.ccN: Namee=amrri_ts ammri_tss_drivver.naame = amrii_tsP: Physs= 没有有定义S: Sysffs=/deevicess/plattform/s3c24400-i2c.0/ii2c-0/00-00333/inpuut/inpput2 为什么这这里是plaatformm目录?U: Uniqq=H: Handdlers=eventt2B: EV=bbB: KEY=400 00 0 0 0 0 4400008800 400 0 0 100000B: ABS=265

21、00000 0I: Bus=0000 Vendoor=00000 Prooduct=0000 Versiion=00000N: Namee=ecoompasss_dataaP: Physs=S: Sysffs=/deevicess/virttual/iinput/inputt3U: Uniqq=H: Handdlers=eventt3B: EV=99B: ABS=307bff从上面可以看到到，完全没有AVVRCP的eevent。解决办法:Kernel$ make menucconfiggCONFIG_INPUTT_UINPPUT解决后的状况:$ adb sshell# cd /pproc/bb

22、us/innput# cat ddevicees显示增加了一个个eventtI: Bus=0005 Vendoor=00000 Prooduct=0000 Versiion=00000N: Namee=AVRRCPP: Physs=S: Sysffs=/deevicess/virttual/iinput/inputt4U: Uniqq=H: Handdlers=eventt4B: EV=11000077B: KEY=103000 168 0 0 00 0 0B: REL=0看openDeevice的的信息:D/EventtHub( 84): EveentHubb:reaadNotiify nf

23、fd: 877D/EventtHub( 84): Opeening devicce: /ddev/innput/eevent44D/EventtHub( 84): Gettting keys.D/EventtHub( 84): Gettting absollute ccontroollerss.D/EventtHub( 84): keyylayouutFileename = /syystem/usr/kkeylayyout/AAVRCP.kl I/EventtHub( 84): Neww keybboard: deviice-iid=0 x110003 devnaame=AAVRCP prop

24、pName=hw.kkeyboaards.665539.devnaame kkeylayyout=/systtem/ussr/keyylayouut/AVRRCP.kllI/EventtHub( 84): Neww deviice: ppath=/dev/iinput/eventt4 namme=AVRRCP idd=0 x100003 (of 0 xx4) inndex=44 fd=1196 cllassess=0 x1D/EventtHub( 84): Addding ddevicee /devv/inpuut/eveent4 00 x3618800 att 4, iid = 33, cl

25、aasses = 0 x11D/EventtHub( 84): Repportinng devvice oopenedd: id=0 x100003, nname=/dev/iinput/eventt4按键时也可以看看到EvenntHub的的信息了:Log如下:D/ACRVPP ( 236): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 236): opeerandss0 = 46D/ACRVPP ( 236): keyy_quirrks = 0, prressedd = 1D/ACRVPP ( 236): conntrol-uinpput = 14

26、,seend_keey = 2201 conntrol.c发出2001号键，按按键按下了D/EventtHub( 84): /deev/inpput/evvent4 got: t0=9337, t11=5829930, ttype=11, codde=2011, v=11 表示从从eventt4得到2001号键 MMEDIA_PLAY_PAUSEED/EventtHub( 84): ievv.codee=201 keyCoode=855 flaggs=0 x0000000001 errr=0D/EventtHub( 84): /deev/inpput/evvent4 got: t0=9337,

27、 t11=6002241, ttype=00, codde=0, v=0D/AudiooHardwware( 61): AuddioStrreamOuutALSAA:settParammeterss() rooutingg=0D/ACRVPP ( 236): - handdle_paanel_ppassthhroughh -D/ACRVPP ( 236): opeerandss0 = c6D/ACRVPP ( 236): keyy_quirrks = 0, prressedd = 0D/ACRVPP ( 236): conntrol-uinpput = 14,seend_keey = cc9D

28、/EventtHub( 84): /deev/inpput/evvent4 got: t0=9337, t11=6643391, ttype=11, codde=2011, v=00 contrrol.c发发出201号号键，按键释释放了D/EventtHub( 84): ievv.codee=201 keyCoode=855 flaggs=0 x0000000001 errr=0D/EventtHub( 84): /deev/inpput/evvent4 got: t0=9337, t11=6644406, ttype=00, codde=0, v=0D/A2DP ( 61): a2ddp_stoopD/A2DP ( 61): bluuetootth_stoopE/BluettoothEEventLLoop.cc