Codice: Seleziona tutto
cami@cami-laptop:~$ [b]lsusb[/b]
Bus 005 Device 004: ID 04b4:6830 Cypress Semiconductor Corp. CY7C68300A EZ-USB AT2 USB 2.0 to ATA/ATAPI
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 004: ID 0c45:608f Microdia VideoCAM Look
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 046d:c50a Logitech, Inc. Cordless Mouse
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hubCodice: Seleziona tutto
cami@cami-laptop:~$ [b]lsmod | grep usb[/b]
usb_storage 82752 1
libusual 30356 1 usb_storage
snd_usb_audio 89728 1
snd_usb_lib 24192 1 snd_usb_audio
snd_hwdep 15236 1 snd_usb_audio
snd_pcm 83204 5 snd_usb_audio,snd_hda_intel,snd_pcm_oss
snd_rawmidi 29824 2 snd_usb_lib,snd_seq_midi
snd 63268 19 snd_usb_audio,snd_hwdep,snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
usbhid 35840 0
hid 50560 1 usbhid
scsi_mod 155212 6 usb_storage,sbp2,sd_mod,sr_mod,sg,libata
usbcore 149360 10 usb_storage,libusual,snd_usb_audio,snd_usb_lib,gspca_sonixb,gspca_main,usbhid,ehci_hcd,uhci_hcdCodice: Seleziona tutto
cami@cami-laptop:~$ [b]sudo gedit /etc/modprobe.d/options[/b]
#Enable double-buffering so gstreamer et. al. work
options quickcam compatible=2
# Default hostap to managed mode
options hostap_pci iw_mode=2
options hostap_cs iw_mode=2
# Stop auto-association.
# LP: #264104
options ipw2200 associate=0
# XXX: Ignore HPA by default. Needs to be revisted in jaunty
options libata ignore_hpa=1
sono disperata!
) sperando che si capiscaCodice: Seleziona tutto
static void uvc_video_decode_data(struct uvc_video_device *video,
struct uvc_buffer *buf, const __u8 *data, int len)
{
struct uvc_video_queue *queue = &video->queue;
unsigned int maxlen, nbytes;
void *mem;
/* Patch variables */
unsigned int i, pixel_size;
__u8 *ptr_tmp;
if (len <= 0)
return;
/* Copy the video data to the buffer. */
/* How many bytes are needed to complete the buffer? */
maxlen = buf->buf.length - buf->buf.bytesused;
/* Where do pixels stored in "data" have to be copied? */
mem = queue->mem + buf->buf.m.offset + buf->buf.bytesused;
/* How many bytes really can be copied into "mem"? */
nbytes = min((unsigned int)len, maxlen);
/* "pixel_size" depens on the pixel color depth (bpp),
* but in YUY2 image format is constant and equal to 2.
*/
pixel_size = video->streaming->format->bpp / 8;
/* In each loop 4 bytes are modified and copied into "mem" buffer. */
for (i = 0; i < nbytes; i += 2 * pixel_size) {
/* "queue->mem + buf->buf.m.offset" is the base-address
* where to start to store the current frame. This
* address refers to a preallocated area (just for a
* sigle frame) taking part in a circular buffer, where
* to store a fixed number of sequent frames.
*/
ptr_tmp = (__u8 *)(queue->mem + buf->buf.m.offset
/* Go to the end of this frame. */
+ video->streaming->cur_frame->wWidth * pixel_size
* video->streaming->cur_frame->wHeight
/* Go back for the number of already copied bytes. */
- buf->buf.bytesused
/* Go back for the number of bytes (4 bytes) to be
* copied in this cycle.
*/
- 2 * pixel_size);
/* The order of copied bytes is changed from
* (Y0 U0 Y1 V1) to (Y1 U0 Y0 V1), i.e. from
* (#0 #1 #2 #3) to (#2 #1 #0 #3).
*/
ptr_tmp[0] = ((__u8 *)(data + i))[2];
ptr_tmp[1] = ((__u8 *)(data + i))[1];
ptr_tmp[2] = ((__u8 *)(data + i))[0];
ptr_tmp[3] = ((__u8 *)(data + i))[3];
/* Update "byteused" value. */
buf->buf.bytesused += 2 * pixel_size;
}
/* Complete the current frame if the buffer size was exceeded. */
if (len > maxlen) {
uvc_trace(UVC_TRACE_FRAME, "Frame complete (overflow).\n");
buf->state = UVC_BUF_STATE_DONE;
}
}
non ho capito come devo andare avanti...cosa devo fare con il file "makefile"? scusate l'ignoranza ma potreste spiegarmelo passo per passo?Codice:
sudo apt-get install subversion
e successivamente scarichiamo nella nostra home i sorgenti
Codice:
svn checkout svn://svn.berlios.de/linux-uvc/linux-uvc/trunk
Una cartella nominata "Trunk" verrà creata nel direttorio da cui avete l'anciato l'ultimo comando, dentro questa cartella sono presenti i sorgenti del driver e il MAKEFILE necessario per l'installazione
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