static int usbvision_nr = 0; // sequential number of usbvision device
-
+static unsigned long usbvision_timestamp = 0; // timestamp in jiffies of a hundred frame
+static unsigned long usbvision_counter = 0; // frame counter
static const int max_imgwidth = MAX_FRAME_WIDTH;
static const int max_imgheight = MAX_FRAME_HEIGHT;
list_add_tail(&usbvision->frame[vb->index].frame, &usbvision->inqueue);
spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+ PDEBUG(DBG_IOCTL, "VIDIOC_QBUF frame #%d",vb->index);
return 0;
}
case VIDIOC_DQBUF:
vb->flags = V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE;
vb->index = f->index;
vb->sequence = f->sequence;
+ vb->timestamp = f->timestamp;
+ vb->field = V4L2_FIELD_NONE;
+ vb->bytesused = f->scanlength;
+ if(debug & DBG_IOCTL) { // do not spend computing time for debug stuff if not needed !
+ if(usbvision_counter == 100) {
+ PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF delta=%d",(unsigned)(jiffies-usbvision_timestamp));
+ usbvision_counter = 0;
+ usbvision_timestamp = jiffies;
+ }
+ else {
+ usbvision_counter++;
+ }
+ PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF frame #%d",vb->index);
+ }
return 0;
}
case VIDIOC_STREAMON:
{
int b=V4L2_BUF_TYPE_VIDEO_CAPTURE;
- if (list_empty(&usbvision->inqueue))
- return -EINVAL;
-
usbvision->streaming = Stream_On;
+ if(debug & DBG_IOCTL) usbvision_timestamp = jiffies;
+
call_i2c_clients(usbvision,VIDIOC_STREAMON , &b);
PDEBUG(DBG_IOCTL, "VIDIOC_STREAMON");
{
struct v4l2_fmtdesc *vfd = arg;
- if ( (dga == 0) &&
- (vfd->type == V4L2_BUF_TYPE_VIDEO_OVERLAY) &&
- (usbvision->palette.format != V4L2_PIX_FMT_YVU420) &&
- (usbvision->palette.format != V4L2_PIX_FMT_YUV422P) ) {
- return -EINVAL;
- }
if(vfd->index>=USBVISION_SUPPORTED_PALETTES-1) {
return -EINVAL;
}
vfd->flags = 0;
+ vfd->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
strcpy(vfd->description,usbvision_v4l2_format[vfd->index].desc);
vfd->pixelformat = usbvision_v4l2_format[vfd->index].format;
+ memset(vfd->reserved, 0, sizeof(vfd->reserved));
return 0;
}
case VIDIOC_G_FMT:
{
struct v4l2_format *vf = arg;
- if ( (dga == 0) &&
- (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY) &&
- (usbvision->palette.format != V4L2_PIX_FMT_YVU420) &&
- (usbvision->palette.format != V4L2_PIX_FMT_YUV422P) ) {
- return -EINVAL;
+ switch (vf->type) {
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ {
+ vf->fmt.pix.width = usbvision->curwidth;
+ vf->fmt.pix.height = usbvision->curheight;
+ vf->fmt.pix.pixelformat = usbvision->palette.format;
+ vf->fmt.pix.bytesperline = usbvision->curwidth*usbvision->palette.bytes_per_pixel;
+ vf->fmt.pix.sizeimage = vf->fmt.pix.bytesperline*usbvision->curheight;
+ vf->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
+ vf->fmt.pix.field = V4L2_FIELD_NONE; /* Always progressive image */
+ }
+ return 0;
+ default:
+ PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT invalid type %d",vf->type);
+ return -EINVAL;
}
- down(&usbvision->lock);
- *vf = usbvision->vid_win;
- up(&usbvision->lock);
- PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT x=%d, y=%d, w=%d, h=%d, chroma=%x, clips=%d",
- vf->fmt.win.w.left, vf->fmt.win.w.top, vf->fmt.win.w.width, vf->fmt.win.w.height, vf->fmt.win.chromakey, vf->fmt.win.clipcount);
+ PDEBUG(DBG_IOCTL, "VIDIOC_G_FMT w=%d, h=%d",vf->fmt.win.w.width, vf->fmt.win.w.height);
return 0;
}
+ case VIDIOC_TRY_FMT:
case VIDIOC_S_FMT:
{
struct v4l2_format *vf = arg;
struct v4l2_clip *vc=NULL;
int on,formatIdx;
- if ( (dga == 0) &&
- (vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY) &&
- (usbvision->palette.format != V4L2_PIX_FMT_YVU420) &&
- (usbvision->palette.format != V4L2_PIX_FMT_YUV422P) ) {
- return -EINVAL;
- }
- if(vf->type == V4L2_BUF_TYPE_VIDEO_OVERLAY) {
- if (vf->fmt.win.clipcount>256) {
- return -EDOM; /* Too many clips! */
- }
- // Do every clips.
- vc = vmalloc(sizeof(struct v4l2_clip)*(vf->fmt.win.clipcount+4));
- if (vc == NULL) {
- return -ENOMEM;
- }
- if (vf->fmt.win.clipcount && copy_from_user(vc,vf->fmt.win.clips,sizeof(struct v4l2_clip)*vf->fmt.win.clipcount)) {
- return -EFAULT;
- }
- on = usbvision->overlay; // Save overlay state
- if (on) {
- usbvision_cap(usbvision, 0);
- }
+ switch(vf->type) {
+ case V4L2_BUF_TYPE_VIDEO_OVERLAY:
+ {
+ if (vf->fmt.win.clipcount>256) {
+ return -EDOM; /* Too many clips! */
+ }
+ // Do every clips.
+ vc = vmalloc(sizeof(struct v4l2_clip)*(vf->fmt.win.clipcount+4));
+ if (vc == NULL) {
+ return -ENOMEM;
+ }
+ if (vf->fmt.win.clipcount && copy_from_user(vc,vf->fmt.win.clips,sizeof(struct v4l2_clip)*vf->fmt.win.clipcount)) {
+ return -EFAULT;
+ }
+ on = usbvision->overlay; // Save overlay state
+ if (on) {
+ usbvision_cap(usbvision, 0);
+ }
- // strange, it seems xawtv sometimes calls us with 0
- // width and/or height. Ignore these values
- if (vf->fmt.win.w.left == 0) {
- vf->fmt.win.w.left = usbvision->vid_win.fmt.win.w.left;
- }
- if (vf->fmt.win.w.top == 0) {
- vf->fmt.win.w.top = usbvision->vid_win.fmt.win.w.top;
- }
+ // strange, it seems xawtv sometimes calls us with 0
+ // width and/or height. Ignore these values
+ if (vf->fmt.win.w.left == 0) {
+ vf->fmt.win.w.left = usbvision->vid_win.fmt.win.w.left;
+ }
+ if (vf->fmt.win.w.top == 0) {
+ vf->fmt.win.w.top = usbvision->vid_win.fmt.win.w.top;
+ }
- // by now we are committed to the new data...
- down(&usbvision->lock);
- RESTRICT_TO_RANGE(vf->fmt.win.w.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
- RESTRICT_TO_RANGE(vf->fmt.win.w.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
- usbvision->vid_win = *vf;
- usbvision->overlay_frame.width = vf->fmt.win.w.width;
- usbvision->overlay_frame.height = vf->fmt.win.w.height;
- usbvision_set_output(usbvision, vf->fmt.win.w.width, vf->fmt.win.w.height);
- up(&usbvision->lock);
-
- // Impose display clips
- if (vf->fmt.win.w.left+vf->fmt.win.w.width > (unsigned int)usbvision->vid_buf.fmt.width) {
- usbvision_new_clip(vf, vc, usbvision->vid_buf.fmt.width-vf->fmt.win.w.left, 0, vf->fmt.win.w.width-1, vf->fmt.win.w.height-1);
- }
- if (vf->fmt.win.w.top+vf->fmt.win.w.height > (unsigned int)usbvision->vid_buf.fmt.height) {
- usbvision_new_clip(vf, vc, 0, usbvision->vid_buf.fmt.height-vf->fmt.win.w.top, vf->fmt.win.w.width-1, vf->fmt.win.w.height-1);
- }
+ // by now we are committed to the new data...
+ down(&usbvision->lock);
+ RESTRICT_TO_RANGE(vf->fmt.win.w.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
+ RESTRICT_TO_RANGE(vf->fmt.win.w.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
+ usbvision->vid_win = *vf;
+ usbvision->overlay_frame.width = vf->fmt.win.w.width;
+ usbvision->overlay_frame.height = vf->fmt.win.w.height;
+ usbvision_set_output(usbvision, vf->fmt.win.w.width, vf->fmt.win.w.height);
+ up(&usbvision->lock);
+
+ // Impose display clips
+ if (vf->fmt.win.w.left+vf->fmt.win.w.width > (unsigned int)usbvision->vid_buf.fmt.width) {
+ usbvision_new_clip(vf, vc, usbvision->vid_buf.fmt.width-vf->fmt.win.w.left, 0, vf->fmt.win.w.width-1, vf->fmt.win.w.height-1);
+ }
+ if (vf->fmt.win.w.top+vf->fmt.win.w.height > (unsigned int)usbvision->vid_buf.fmt.height) {
+ usbvision_new_clip(vf, vc, 0, usbvision->vid_buf.fmt.height-vf->fmt.win.w.top, vf->fmt.win.w.width-1, vf->fmt.win.w.height-1);
+ }
- // built the requested clipping zones
- usbvision_built_overlay(usbvision, vf->fmt.win.clipcount, vc);
- vfree(vc);
+ // built the requested clipping zones
+ usbvision_built_overlay(usbvision, vf->fmt.win.clipcount, vc);
+ vfree(vc);
- // restore overlay state
- if (on) {
- usbvision_cap(usbvision, 1);
+ // restore overlay state
+ if (on) {
+ usbvision_cap(usbvision, 1);
+ }
+ usbvision->vid_win_valid = 1;
+ PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT overlay x=%d, y=%d, w=%d, h=%d, chroma=%x, clips=%d",
+ vf->fmt.win.w.left, vf->fmt.win.w.top, vf->fmt.win.w.width, vf->fmt.win.w.height, vf->fmt.win.chromakey, vf->fmt.win.clipcount);
+ return 0;
}
- usbvision->vid_win_valid = 1;
- PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT overlay x=%d, y=%d, w=%d, h=%d, chroma=%x, clips=%d",
- vf->fmt.win.w.left, vf->fmt.win.w.top, vf->fmt.win.w.width, vf->fmt.win.w.height, vf->fmt.win.chromakey, vf->fmt.win.clipcount);
- }
- else {
- /* Find requested format in available ones */
- for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
- if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
- usbvision->palette = usbvision_v4l2_format[formatIdx];
- break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ {
+ /* Find requested format in available ones */
+ for(formatIdx=0;formatIdx<USBVISION_SUPPORTED_PALETTES;formatIdx++) {
+ if(vf->fmt.pix.pixelformat == usbvision_v4l2_format[formatIdx].format) {
+ usbvision->palette = usbvision_v4l2_format[formatIdx];
+ break;
+ }
+ }
+ /* robustness */
+ if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
+ return -EINVAL;
}
+ RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
+ RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
+ // by now we are committed to the new data...
+ down(&usbvision->lock);
+ usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
+ up(&usbvision->lock);
+
+ PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, format=%s",
+ vf->fmt.pix.width, vf->fmt.pix.height,usbvision->palette.desc);
+ return 0;
}
- /* robustness */
- if(formatIdx == USBVISION_SUPPORTED_PALETTES) {
+ default:
return -EINVAL;
- }
- usbvision->vid_win.fmt.pix.pixelformat = vf->fmt.pix.pixelformat;
- usbvision->vid_win.fmt.pix.width = vf->fmt.pix.width; //Image width in pixels.
- usbvision->vid_win.fmt.pix.height = vf->fmt.pix.height; // Image height in pixels.
-
- // by now we are committed to the new data...
- down(&usbvision->lock);
- RESTRICT_TO_RANGE(vf->fmt.pix.width, MIN_FRAME_WIDTH, MAX_FRAME_WIDTH);
- RESTRICT_TO_RANGE(vf->fmt.pix.height, MIN_FRAME_HEIGHT, MAX_FRAME_HEIGHT);
- usbvision->vid_win = *vf;
- usbvision_set_output(usbvision, vf->fmt.pix.width, vf->fmt.pix.height);
- up(&usbvision->lock);
-
- usbvision->vid_win_valid = 1;
- PDEBUG(DBG_IOCTL, "VIDIOC_S_FMT grabdisplay w=%d, h=%d, ",
- vf->fmt.pix.width, vf->fmt.pix.height);
}
- return 0;
}
case VIDIOC_OVERLAY:
{
struct video_device *dev = video_devdata(file);
struct usb_usbvision *usbvision = (struct usb_usbvision *) video_get_drvdata(dev);
int noblock = file->f_flags & O_NONBLOCK;
+ unsigned long lock_flags;
int frmx = -1;
- int rc = 0;
+ int ret,i;
struct usbvision_frame *frame;
-return -EINVAL;
+
PDEBUG(DBG_IO, "%s: %ld bytes, noblock=%d", __FUNCTION__, (unsigned long)count, noblock);
if (!USBVISION_IS_OPERATIONAL(usbvision) || (buf == NULL))
return -EFAULT;
- down(&usbvision->lock);
- //code for testing compression
- if (usbvision->isocMode == ISOC_MODE_COMPRESS) {
- usbvision->frame[0].v4l2_format = usbvision_v4l2_format[0]; //V4L2_PIX_FMT_GREY;
- usbvision->frame[1].v4l2_format = usbvision_v4l2_format[0]; // V4L2_PIX_FMT_GREY;
- }
+ /* no stream is running, make it running ! */
+ usbvision->streaming = Stream_On;
+ call_i2c_clients(usbvision,VIDIOC_STREAMON , NULL);
- // See if a frame is completed, then use it.
- if (usbvision->frame[0].grabstate >= FrameState_Done) // _Done or _Error
- frmx = 0;
- else if (usbvision->frame[1].grabstate >= FrameState_Done)// _Done or _Error
- frmx = 1;
+ /* First, enqueue as many frames as possible (like a user of VIDIOC_QBUF would do) */
+ for(i=0;i<USBVISION_NUMFRAMES;i++) {
+ frame = &usbvision->frame[i];
+ if(frame->grabstate == FrameState_Unused) {
+ /* Mark it as ready and enqueue frame */
+ frame->grabstate = FrameState_Ready;
+ frame->scanstate = ScanState_Scanning;
+ frame->scanlength = 0; /* Accumulated in usbvision_parse_data() */
- if (noblock && (frmx == -1)) {
- count = -EAGAIN;
- goto usbvision_v4l2_read_done;
- }
+ /* set v4l2_format index */
+ frame->v4l2_format = usbvision->palette;
- // If no FRAME_DONE, look for a FRAME_GRABBING state.
- // See if a frame is in process (grabbing), then use it.
- if (frmx == -1) {
- if (usbvision->frame[0].grabstate == FrameState_Grabbing)
- frmx = 0;
- else if (usbvision->frame[1].grabstate == FrameState_Grabbing)
- frmx = 1;
+ spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+ list_add_tail(&frame->frame, &usbvision->inqueue);
+ spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+ }
}
- // If no frame is active, start one.
- if (frmx == -1)
- // FIXME: enqueue all inqueue...
- /* usbvision_new_frame(usbvision, frmx = 0); */
-
- frame = &usbvision->frame[frmx];
+ /* Then try to steal a frame (like a VIDIOC_DQBUF would do) */
+ if (list_empty(&(usbvision->outqueue))) {
+ if(noblock)
+ return -EAGAIN;
- restart:
- if (!USBVISION_IS_OPERATIONAL(usbvision)) {
- count = -EIO;
- goto usbvision_v4l2_read_done;
+ ret = wait_event_interruptible
+ (usbvision->wait_frame,
+ !list_empty(&(usbvision->outqueue)));
+ if (ret)
+ return ret;
}
- PDEBUG(DBG_IO, "Waiting frame grabbing");
- rc = wait_event_interruptible(usbvision->wait_frame, (frame->grabstate == FrameState_Done) ||
- (frame->grabstate == FrameState_Error));
- if (rc) {
- goto usbvision_v4l2_read_done;
+
+ spin_lock_irqsave(&usbvision->queue_lock, lock_flags);
+ frame = list_entry(usbvision->outqueue.next,
+ struct usbvision_frame, frame);
+ list_del(usbvision->outqueue.next);
+ spin_unlock_irqrestore(&usbvision->queue_lock, lock_flags);
+
+ if(debug & DBG_IOCTL) { // do not spend computing time for debug stuff if not needed !
+ if(usbvision_counter == 100) {
+ PDEBUG(DBG_IOCTL, "VIDIOC_DQBUF delta=%d",(unsigned)(jiffies-usbvision_timestamp));
+ usbvision_counter = 0;
+ usbvision_timestamp = jiffies;
+ }
+ else {
+ usbvision_counter++;
+ }
}
+ /* An error returns an empty frame */
if (frame->grabstate == FrameState_Error) {
frame->bytes_read = 0;
- // FIXME: enqueue all inqueue...
-/* if (usbvision_new_frame(usbvision, frmx)) { */
-/* err("%s: usbvision_new_frame() failed", __FUNCTION__); */
-/* } */
- goto restart;
+ return 0;
}
PDEBUG(DBG_IO, "%s: frmx=%d, bytes_read=%ld, scanlength=%ld", __FUNCTION__,
- frmx, frame->bytes_read, frame->scanlength);
+ frame->index, frame->bytes_read, frame->scanlength);
/* copy bytes to user space; we allow for partials reads */
if ((count + frame->bytes_read) > (unsigned long)frame->scanlength)
count = frame->scanlength - frame->bytes_read;
if (copy_to_user(buf, frame->data + frame->bytes_read, count)) {
- count = -EFAULT;
- goto usbvision_v4l2_read_done;
+ return -EFAULT;
}
frame->bytes_read += count;
PDEBUG(DBG_IO, "%s: {copy} count used=%ld, new bytes_read=%ld", __FUNCTION__,
(unsigned long)count, frame->bytes_read);
- if (frame->bytes_read >= frame->scanlength) {// All data has been read
+ // For now, forget the frame if it has not been read in one shot.
+/* if (frame->bytes_read >= frame->scanlength) {// All data has been read */
frame->bytes_read = 0;
/* Mark it as available to be used again. */
usbvision->frame[frmx].grabstate = FrameState_Unused;
- // FIXME enqueue another frame
-/* if (usbvision_new_frame(usbvision, frmx ? 0 : 1)) */
-/* err("%s: usbvision_new_frame() failed", __FUNCTION__); */
- }
+/* } */
-usbvision_v4l2_read_done:
- up(&usbvision->lock);
return count;
}
projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / commitdiff