With Dual display support no video on secondary display.

[punith444]

i ported mpv with cedarx in my A20 ubuntu board , so now i am able to play videos smoothly.
but with dual display support i am not getting video output on second display (its full black screen).

[disp_init]
disp_init_enable = 1
disp_mode = 4
screen0_output_type = 3
screen0_output_mode = 4
screen1_output_type = 2
screen1_output_mode = 11
fb0_framebuffer_num = 2
fb0_format = 10
fb0_pixel_sequence = 0
fb0_scaler_mode_enable = 0
fb0_width = 0
fb0_height = 0
fb1_framebuffer_num = 2
fb1_format = 10
fb1_pixel_sequence = 0
fb1_scaler_mode_enable = 0
fb1_width = 0
fb1_height = 0
lcd0_backlight = 197
lcd1_backlight = 197
lcd0_bright = 50
lcd0_contrast = 50
lcd0_saturation = 57
lcd0_hue = 50
lcd1_bright = 50
lcd1_contrast = 50
lcd1_saturation = 57
lcd1_hue = 50

Regards
Punith

[Moorviper]

mittorn@319bd47

this is not implemented at master branch so only one display is supported

[punith444]

Hi Mittron,
Thanks for your reply. I want two display same frame buffer , so i can play one video in both display smoothly.
Is it possible with your branch or can you tell how can i do it.
Regards
Punith

[punith444]

Hi Mittrron,
some improvements.
with export VDPAU_SCREEN=0 i am getting video in HDMI.
with export VDPAU_SCREEN=1 i am getting video in TV.
But i want on both.
can you tell me what need to change in code.

Regards
Punith

Regards
Punith

[mittorn]

No, it's only possible to use one display now.
But you can create layer on both displays, look at https://github.com/linux-sunxi/libvdpau-sunxi/blob/master/presentation_queue.c#L264
Screen number is set in first arg at https://github.com/linux-sunxi/libvdpau-sunxi/blob/master/presentation_queue.c#L322 and other disp ioctls.
Note that scaler layer count is limited and if you are using scaler on hdmi (it is needed to prevent image jumping on high resolutions), this will not work.

[punith444]

i dont any need any scaler to enabled , could this possible by changing the code,

[mittorn]

You need two scaler layers to convert colorspace in video.
And in almost all cases you neen scaler in dualscreen configuration. You can use a10disp to check configuration.

[mittorn]

You also can do it without any code change by wrapping ioctl. Look preload code in cedarxplayertest-gui. I wrapped some functions in CedarXPlayerTest and rescaled image and moved it to another screen.

[punith444]

hi mittorn,
if you see my script i disabled bot fb0 and fb1 scaler enable.
can you tell me what changes need to do to get video on both display.

[punith444]

Hi Mittron,
i look at source code and did some changes but not yet worked for me.
can you kindly tell what needs to do to get video on both display.
Regards
Punith

[mittorn]

http://codepad.org/giQv9CXj
presentation_queue.c
You also need to add layer2 to vdpau_private.h
It is dirty and break OSD implementation, but work for me.

[punith444]

Hi Mittorn,
i tested with your new code presentation_queue.c and added layer2 to vdpau_private.h.
but i am not getting video in second display(TV). getting fallowing errors while playing video.

without osd enabled.
<4>[DISP] request scaler layer fail!
<4>[DISP] request scaler fail
<4>[DISP] request scaler layer fail!
<4>[DISP] request scaler fail
<4>[DISP] request scaler layer fail!
<4>[DISP] request scaler fail
<4>[DISP] request scaler layer fail!
<4>[DISP] request scaler fail
<4>[DISP] request scaler layer fail!
<4>[DISP] layer released: 0,101
<4>[DISP] layer released: 1,101

With osd enabled

<4>[DISP] layer 2 in screen 0 not inited!
<4>[DISP] request scaler fail
<4>[DISP] request scaler layer fail!
<4>[DISP] layer 2 in screen 0 not inited!
<4>[DISP] request scaler fail
<4>[DISP] request scaler layer fail!
<4>[DISP] layer 2 in screen 0 not inited!
<4>[DISP] request scaler fail
<4>[DISP] request scaler layer fail!
<4>[DISP] layer 2 in screen 0 not inited!
<4>[DISP] layer released: 0,101
<4>[DISP] layer released: 1,101
<4>[DISP] layer released: 1,102

[mittorn]

Try to reboot and manually disable scaller on both displays with a10disp. You also should disable hardware cursor, if present. OSD must be disabled because it is broken with my changes and it uses another layer.

[mittorn]

After few crashes layers was not released because of disp bug, it is only way to reboot to release them.

[Moorviper]

which player do you use
on newer kernel the memory for the cedarx ist hardcoded to 80 MB
if you use vdr-softhd-device you have to increase it to min. 120MB better 140MB

192 MB is afik the highest amount which could be assigned save.

[punith444]

hi Mittorn,
i am using mpv player and kernel is linux-sunxi 3.4 and how to increase cedarx memory?.
and how to disable scaler on both display using a10disp because i am using A20 board.
i fallowed the procedure from below link,
http://linux-sunxi.org/Cedrus