全志D1-H 双屏异显第一弹来啦 D1同时支持两个屏幕，一边做UI交互，一边播放视频

# 目录 d1-tina-open/package/allwinner/libuapi/src/videoOutPort.c

# 调转一下默认屏幕输出

# 71 行

-#define SCREEN_0 0

-#define SCREEN_1 1

+#define SCREEN_0 1

+#define SCREEN_1 0

make -j32 && pack

cd /sys/kernel/debug/dispdbg

echo disp1 > name; echo switch1 > command; echo 4 10 0 0 0x4 0x101 0 0 0 8 > param; echo 1 > start;

./cardcamera

root@TinaLinux:/sys/devices/virtual/disp/disp/attr# cat sys

screen 0:

de_rate 300000000 hz, ref_fps:62

mgr0: 800x1280 fmt[rgb] cs[0x204] range[full] eotf[0x4] bits[8bits] err[0] force_sync[0] unblank direct_show[false] iommu[1]

dmabuf: cache[0] cache max[0] umap skip[0] overflow[0]

        lcd output      backlight(100)  fps:62.5         800x1280

        err:1   skip:200        irq:18449       vsync:0 vsync_skip:0

   BUF    enable ch[1] lyr[0] z[16] prem[N] a[pixel 255] fmt[  0] fb[ 800,1280; 800,1280; 800,1280] crop[   0,1280, 800,1280] frame[   0,   0, 800,1280] addr[ff800000,       0,       0] flags[0x       0] trd[0,0]

depth[ 0] screen 1:

de_rate 300000000 hz, ref_fps:60

mgr1: 1920x1080 fmt[rgb] cs[0x101] range[limit] eotf[0x4] bits[8bits] err[0] force_sync[0] unblank direct_show[false] iommu[1]

dmabuf: cache[0] cache max[0] umap skip[0] overflow[0]

        hdmi output mode(10)    fps:60.6        1920x1080

        err:0   skip:4  irq:14742       vsync:0 vsync_skip:0

   BUF    enable ch[0] lyr[0] z[0] prem[N] a[globl 255] fmt[ 77] fb[ 992, 736; 496, 368; 496, 368] crop[   0,   0, 976, 720] frame[   0,   0,1920,1080] addr[fe800000,fe8b2400,fe8ded00] flags[0x       0] trd[0,0]

depth

[ 0] root@TinaLinux:/sys/devices/virtual/disp/disp/attr#