ao2.it
Antonio Ospite, theorist attacks

I bought the picoproj c110 with the hope of doing what you did. I couldn't understand anything to the usb trace so I gave up.

I spent a good part of last night trying to compile the package for i386. I used the tarball provided. Why I didn't use the git version is still a mystery to me. The code is based on a version of libav which isn't in ubuntu repositories so I had to download and compile it too. (twice! damn flag --enable-shared not enabled by default in libav)

I managed to get picoproj running. axmplay is compiled but I have a problem with the path of one of the libraries apparently. I will look into this a bit later.

Huge thanks to you!

The ubuntu repositories have been updated so it's easier now to compile :)
I cant make the x11grab option work:

sudo ./am7xxx-play -f x11grab -i :0.0 -o video_size=1024x600
scan_devices: am7xxx device found, index: 0, name: Acer C110
cannot find input format
cannot initialize input
am7xxx_play failed

the v4l2 option works pretty well. I can stream my webcam, I tried to stream my desktop with webcamstudio and it worked but it was a cpuhog

ffmpeg x11grab works so I tried to record a video of the screen and play it just after it was created but it doesnt seek after the end of the file at the time it was opened.

The -i option with the file is working quite well but vlc and am7play get out of synch rapidly.

The framebuffer option is not working either. My /dev/fb0 device is black apparently.

I tried to use Xvfb to create a second framebuffer and have vlc use it but am7play cant read it.

GStreamer seems to be a good idea to make it integrated.
The fact that the program and library are lightweight and fairly easy to compile/install as it is now is great too.

I am running ubuntu oneiric ocelot on a small netbook (samsung nf210)

usb_modeswitch and am7play combined are more reliable to get hold of the device than the acer displaypal software on windows :D

I had quite a bit of fun with it as you can see :D
My ultimate goal is to project stuff and use it with libfreenect, like the lasertagging thing but with no laserpointer.

goto: sleep

Hi,
I tried to compile the 0.1.2 stable release under Ubuntu 11.10 i386, but could not get it compile. I had the latest version of libav* from the ubuntu repositories but it could not. However after hours of trying different verisons of ffmpeg and libav, I think I finally figured it out.. I can now compile and install easily.
I wrote a post about it...
http://shortcuttosanity.blogspot.in/2012/05/fix-install-libam7xxx-under-...
I hope this helps someone...

Cheers!

hi Antonio

I have an Aiptek PocketCinema T25 projector, and as it showed the same usb ids, I gave it a try. Cloned your code from git to ubuntu running on vbox. Compiled nicely. The problem was that in mass storage mode the usb ids are those, but in projector mode they are 0x08ca:0x2144. Well I added them to libam7xxx.c and wov, the thing showed images.

Then I tried the cross-compiling, but the code wouldn't start in win7. Then I just compiled it with msys+mingw64, and also on win7 after Zadig and proper libusb-1.0.dll, projector can show images also on win7. The next ordeal was to get cmake (glad you use it!) work with GNUtoMS. Running in msys-shell absolutely no go, msys doesn't understand the vcvars64.bat. The I tried command prompt, but that neither, then after running sdk7.1 command prompt, got exp and lib files. Compiled picoproj in VC 2010 Express, and it works nicely.

All this, because earlier I had to use Pico_Projector to show whole screen, when doing threePhase 3d-reconstruction with opencv. Using whole screen makes opengl window of opencv not responsive to mouse, and after taking the phase images, I had to turn the projector off. Opencv on the other hand must be compiled with MSVC to get opengl, mingw64 doesn't work. Also using CUDA needs MSVC. Now it's easy just to show the images on pico projector, no need even to clutter monitor.

this I added to am7xxx_usb_device_descriptor:

	{
		.name	    ="Aiptek PocketCinema T25",
		.vendor_id  = 0x08ca,
		.product_id = 0x2144,
         }

am7xxx_mode_switch turns the projector ok on, but even giving the Aiptek projector-mode usb ids doesn't set it back.

-matti

Cześć
I can not run the Acer C110 on Ubuntu 11.10, I do not know what I'm doing well.
Libam7xxx installed. I have read and link http://shortcuttosanity.blogspot.in/2012/05/fix-install-libam7xxx-under-...
I need help

I did compile, but it does not work.
How do I run the sudo picoproj?
I read this:
http://git.ao2.it/libam7xxx.git/blob/HEAD:/HACKING.asciidoc
I give up,

Hi,

I have a PicoPix PPX2055, is there a possibility to use am7xxx-play ?
If I can help, please ask ;-)

Debian Wheezy AMD64

lsusb -v
...
Bus 002 Device 104: ID 21e7:0016  
Couldn't open device, some information will be missing
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          255 Vendor Specific Class
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x21e7 
  idProduct          0x0016 
  bcdDevice            1.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 3 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     2
    iConfiguration          6 
    bmAttributes         0xc0
      Self Powered
    MaxPower                2mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass       255 Vendor Specific Class
      bInterfaceSubClass      8 
      bInterfaceProtocol      8 
      iInterface              7 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval

Thanks for this prompt answer. The result:

$ ./am7xxx-play -f x11grab -i :0.0
scan_devices: am7xxx device found, index: 0, name: Philips/Sagemcom PicoPix 2055
[x11grab @ 0x118c8e0] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1920 height: 1080
[x11grab @ 0x118c8e0] shared memory extension  found
[x11grab @ 0x118c8e0] Estimating duration from bitrate, this may be inaccurate
Input #0, x11grab, from ':0.0':
  Duration: N/A, start: 1348759155.216664, bitrate: N/A
    Stream #0.0: Video: rawvideo, bgra, 1920x1080, -2147483 kb/s, 60 tbr, 1000k tbn, 60 tbc
[IMGUTILS @ 0x7fff2fd55030] Picture size 0x0 is invalid
cannot allocate output data buffer!
am7xxx_play failed

I have try this:

$ usb_modeswitch --default-vendor 0x21e7 --default-product 0x0016 --message-content 55534243087052890000000000000cff020000000000000000000000000000

Looking for default devices ...
   found matching product ID
   adding device
 Found device in default mode, class or configuration (1)
Accessing device 061 on bus 002 ...
Getting the current device configuration ...
 OK, got current device configuration (2)
Using first interface: 0x00
Using endpoints 0x01 (out) and 0x81 (in)
Not a storage device, skipping SCSI inquiry

USB description data (for identification)
-------------------------
Manufacturer: actions
     Product: Usb Device
  Serial No.: 00000000000000000000000000000000
-------------------------
Looking for active driver ...
 No driver found. Either detached before or never attached
Setting up communication with interface 0
Using endpoint 0x01 for message sending ...
Trying to send message 1 to endpoint 0x01 ...
 OK, message successfully sent
Resetting response endpoint 0x81
Resetting message endpoint 0x01
-> Run lsusb to note any changes. Bye.

Any Idea ?

Hi, I just installed the following .deb packages:

• am7xxx_0.1.4-2_i386.deb
• libam7xxx0.1_0.1.4-2_i386.deb
• libam7xxx-bin_0.1.4-2_i386.deb
• libam7xxx-dev_0.1.4-2_i386.deb
• libam7xxx-doc_0.1.4-2_all.deb

This is the output I get:

mandrake@goldrake:~$ am7xxx-play -f x11grab -i :0.0
scan_devices: am7xxx device found, index: 0, name: Philips/Sagemcom PicoPix 2055
[x11grab @ 0x8f156a0] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1024 height: 600
[x11grab @ 0x8f156a0] shared memory extension  found
[x11grab @ 0x8f156a0] Estimating duration from bitrate, this may be inaccurate
Input #0, x11grab, from ':0.0':
  Duration: N/A, start: 1391437266.473287, bitrate: 1179648 kb/s
    Stream #0.0: Video: rawvideo, bgra, 1024x600, 1179648 kb/s, 60 tbr, 1000k tbn, 60 tbc

and it hangs there, but my PicoPix PPX2055 projector projects nonsense (blue-ish and purple horizontal segments).

Any help?
Thank you,
Paolo