C++ DEB_EE函数代码示例

static int s_fmt(struct saa7146_fh *fh, struct v4l2_format *f)
{
	struct saa7146_dev *dev = fh->dev;
	struct saa7146_vv *vv = dev->vv_data;

	int err;

	switch (f->type) {
	case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		DEB_EE(("V4L2_BUF_TYPE_VIDEO_CAPTURE: dev:%p, fh:%p\n",dev,fh));
		if (IS_CAPTURE_ACTIVE(fh) != 0) {
			DEB_EE(("streaming capture is active\n"));
			return -EBUSY;
		}
		err = try_fmt(fh,f);
		if (0 != err)
			return err;
		fh->video_fmt = f->fmt.pix;
		DEB_EE(("set to pixelformat '%4.4s'\n",(char *)&fh->video_fmt.pixelformat));
		return 0;
	case V4L2_BUF_TYPE_VIDEO_OVERLAY:
		DEB_EE(("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n",dev,fh));
		err = try_win(dev,&f->fmt.win);
		if (0 != err)
			return err;
		down(&dev->lock);
		fh->ov.win    = f->fmt.win;
		fh->ov.nclips = f->fmt.win.clipcount;
		if (fh->ov.nclips > 16)
			fh->ov.nclips = 16;
		if (copy_from_user(fh->ov.clips,f->fmt.win.clips,sizeof(struct v4l2_clip)*fh->ov.nclips)) {
			up(&dev->lock);
			return -EFAULT;
		}

		/* fh->ov.fh is used to indicate that we have valid overlay informations, too */
		fh->ov.fh = fh;

		up(&dev->lock);

		/* check if our current overlay is active */
		if (IS_OVERLAY_ACTIVE(fh) != 0) {
			saa7146_stop_preview(fh);
			saa7146_start_preview(fh);
		}
		return 0;
	default:
		DEB_D(("unknown format type '%d'\n",f->type));
		return -EINVAL;
	}
}

static int vidioc_s_std(struct file *file, void *fh, v4l2_std_id *id)
{
	struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
	struct saa7146_vv *vv = dev->vv_data;
	int found = 0;
	int err, i;

	DEB_EE(("VIDIOC_S_STD\n"));

	if ((vv->video_status & STATUS_CAPTURE) == STATUS_CAPTURE) {
		DEB_D(("cannot change video standard while streaming capture is active\n"));
		return -EBUSY;
	}

	if ((vv->video_status & STATUS_OVERLAY) != 0) {
		vv->ov_suspend = vv->video_fh;
		err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */
		if (0 != err) {
			DEB_D(("suspending video failed. aborting\n"));
			return err;
		}
	}

	mutex_lock(&dev->lock);

	for (i = 0; i < dev->ext_vv_data->num_stds; i++)
		if (*id & dev->ext_vv_data->stds[i].id)
			break;
	if (i != dev->ext_vv_data->num_stds) {
		vv->standard = &dev->ext_vv_data->stds[i];
		if (NULL != dev->ext_vv_data->std_callback)
			dev->ext_vv_data->std_callback(dev, vv->standard);
		found = 1;
	}

	mutex_unlock(&dev->lock);

	if (vv->ov_suspend != NULL) {
		saa7146_start_preview(vv->ov_suspend);
		vv->ov_suspend = NULL;
	}

	if (!found) {
		DEB_EE(("VIDIOC_S_STD: standard not found.\n"));
		return -EINVAL;
	}

	DEB_EE(("VIDIOC_S_STD: set to standard to '%s'\n", vv->standard->name));
	return 0;
}

int saa7146_unregister_extension(struct saa7146_extension* ext)
{
	DEB_EE("ext:%p\n", ext);
	pr_info("unregister extension '%s'\n", ext->name);
	pci_unregister_driver(&ext->driver);
	return 0;
}

int saa7146_start_preview(struct saa7146_fh *fh)
{
	struct saa7146_dev *dev = fh->dev;
	struct saa7146_vv *vv = dev->vv_data;
	struct v4l2_format fmt;
	int ret = 0, err = 0;

	DEB_EE("dev:%p, fh:%p\n", dev, fh);

	/* check if we have overlay information */
	if (vv->ov.fh == NULL) {
		DEB_D("no overlay data available. try S_FMT first.\n");
		return -EAGAIN;
	}

	/* check if streaming capture is running */
	if (IS_CAPTURE_ACTIVE(fh) != 0) {
		DEB_D("streaming capture is active\n");
		return -EBUSY;
	}

	/* check if overlay is running */
	if (IS_OVERLAY_ACTIVE(fh) != 0) {
		if (vv->video_fh == fh) {
			DEB_D("overlay is already active\n");
			return 0;
		}
		DEB_D("overlay is already active in another open\n");
		return -EBUSY;
	}

	if (0 == saa7146_res_get(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP)) {
		DEB_D("cannot get necessary overlay resources\n");
		return -EBUSY;
	}

	fmt.fmt.win = vv->ov.win;
	err = vidioc_try_fmt_vid_overlay(NULL, fh, &fmt);
	if (0 != err) {
		saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
		return -EBUSY;
	}
	vv->ov.win = fmt.fmt.win;

	DEB_D("%dx%d+%d+%d %s field=%s\n",
	      vv->ov.win.w.width, vv->ov.win.w.height,
	      vv->ov.win.w.left, vv->ov.win.w.top,
	      vv->ov_fmt->name, v4l2_field_names[vv->ov.win.field]);

	if (0 != (ret = saa7146_enable_overlay(fh))) {
		DEB_D("enabling overlay failed: %d\n", ret);
		saa7146_res_free(vv->video_fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);
		return ret;
	}

	vv->video_status = STATUS_OVERLAY;
	vv->video_fh = fh;

	return 0;
}

static int vidioc_s_frequency(struct file *file, void *fh, struct v4l2_frequency *f)
{
	struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
	struct mxb *mxb = (struct mxb *)dev->ext_priv;
	struct saa7146_vv *vv = dev->vv_data;

	if (f->tuner)
		return -EINVAL;

	if (V4L2_TUNER_ANALOG_TV != f->type)
		return -EINVAL;

	if (mxb->cur_input) {
		DEB_D(("VIDIOC_S_FREQ: channel %d does not have a tuner!\n", mxb->cur_input));
		return -EINVAL;
	}

	mxb->cur_freq = *f;
	DEB_EE(("VIDIOC_S_FREQUENCY: freq:0x%08x.\n", mxb->cur_freq.frequency));

	/* tune in desired frequency */
	tuner_call(mxb, tuner, s_frequency, &mxb->cur_freq);

	/* hack: changing the frequency should invalidate the vbi-counter (=> alevt) */
	spin_lock(&dev->slock);
	vv->vbi_fieldcount = 0;
	spin_unlock(&dev->slock);

	return 0;
}

static int vidioc_s_frequency(struct file *file, void *fh, struct v4l2_frequency *f)
{
    struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
    struct mxb *mxb = (struct mxb *)dev->ext_priv;
    struct saa7146_vv *vv = dev->vv_data;

    if (f->tuner)
        return -EINVAL;

    if (V4L2_TUNER_ANALOG_TV != f->type)
        return -EINVAL;

    if (mxb->cur_input) {
        DEB_D("VIDIOC_S_FREQ: channel %d does not have a tuner!\n",
              mxb->cur_input);
        return -EINVAL;
    }

    mxb->cur_freq = *f;
    DEB_EE("VIDIOC_S_FREQUENCY: freq:0x%08x\n", mxb->cur_freq.frequency);


    tuner_call(mxb, tuner, s_frequency, &mxb->cur_freq);


    spin_lock(&dev->slock);
    vv->vbi_fieldcount = 0;
    spin_unlock(&dev->slock);

    return 0;
}

int saa7146_unregister_extension(struct saa7146_extension* ext)
{
    DEB_EE(("ext:%p\n",ext));
    printk("saa7146: unregister extension '%s'.\n",ext->name);
    pci_unregister_driver(&ext->driver);
    return 0;
}

int saa7146_stop_preview(struct saa7146_fh *fh)
{
	struct saa7146_dev *dev = fh->dev;
	struct saa7146_vv *vv = dev->vv_data;

	DEB_EE(("dev:%p, fh:%p\n",dev,fh));

	/* check if streaming capture is running */
	if (IS_CAPTURE_ACTIVE(fh) != 0) {
		DEB_D(("streaming capture is active.\n"));
		return -EBUSY;
	}

	/* check if overlay is running at all */
	if ((vv->video_status & STATUS_OVERLAY) == 0) {
		DEB_D(("no active overlay.\n"));
		return 0;
	}

	if (vv->video_fh != fh) {
		DEB_D(("overlay is active, but in another open.\n"));
		return -EBUSY;
	}

	vv->video_status = 0;
	vv->video_fh = NULL;

	saa7146_disable_overlay(fh);

	saa7146_res_free(fh, RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP);

	return 0;
}

int saa7146_unregister_extension(struct saa7146_extension* ext)
{
	DEB_EE(("ext:%p\n",ext));
;
	pci_unregister_driver(&ext->driver);
	return 0;
}

static int video_begin(struct saa7146_fh *fh)
{
	struct saa7146_dev *dev = fh->dev;
	struct saa7146_vv *vv = dev->vv_data;
	struct saa7146_format *fmt = NULL;
	unsigned int resource;
	int ret = 0, err = 0;

	DEB_EE(("dev:%p, fh:%p\n",dev,fh));

	if ((vv->video_status & STATUS_CAPTURE) != 0) {
		if (vv->video_fh == fh) {
			DEB_S(("already capturing.\n"));
			return 0;
		}
		DEB_S(("already capturing in another open.\n"));
		return -EBUSY;
	}

	if ((vv->video_status & STATUS_OVERLAY) != 0) {
		DEB_S(("warning: suspending overlay video for streaming capture.\n"));
		vv->ov_suspend = vv->video_fh;
		err = saa7146_stop_preview(vv->video_fh); /* side effect: video_status is now 0, video_fh is NULL */
		if (0 != err) {
			DEB_D(("suspending video failed. aborting\n"));
			return err;
		}
	}

	fmt = format_by_fourcc(dev,fh->video_fmt.pixelformat);
	/* we need to have a valid format set here */
	BUG_ON(NULL == fmt);

	if (0 != (fmt->flags & FORMAT_IS_PLANAR)) {
		resource = RESOURCE_DMA1_HPS|RESOURCE_DMA2_CLP|RESOURCE_DMA3_BRS;
	} else {
		resource = RESOURCE_DMA1_HPS;
	}

	ret = saa7146_res_get(fh, resource);
	if (0 == ret) {
		DEB_S(("cannot get capture resource %d\n",resource));
		if (vv->ov_suspend != NULL) {
			saa7146_start_preview(vv->ov_suspend);
			vv->ov_suspend = NULL;
		}
		return -EBUSY;
	}

	/* clear out beginning of streaming bit (rps register 0)*/
	saa7146_write(dev, MC2, MASK_27 );

	/* enable rps0 irqs */
	SAA7146_IER_ENABLE(dev, MASK_27);

	vv->video_fh = fh;
	vv->video_status = STATUS_CAPTURE;

	return 0;
}

static int vidioc_s_fmt_vid_overlay(struct file *file, void *__fh, struct v4l2_format *f)
{
	struct saa7146_fh *fh = __fh;
	struct saa7146_dev *dev = fh->dev;
	struct saa7146_vv *vv = dev->vv_data;
	int err;

	DEB_EE("V4L2_BUF_TYPE_VIDEO_OVERLAY: dev:%p, fh:%p\n", dev, fh);
	err = vidioc_try_fmt_vid_overlay(file, fh, f);
	if (0 != err)
		return err;
	fh->ov.win    = f->fmt.win;
	fh->ov.nclips = f->fmt.win.clipcount;
	if (fh->ov.nclips > 16)
		fh->ov.nclips = 16;
	if (copy_from_user(fh->ov.clips, f->fmt.win.clips,
				sizeof(struct v4l2_clip) * fh->ov.nclips)) {
		return -EFAULT;
	}

	/* fh->ov.fh is used to indicate that we have valid overlay informations, too */
	fh->ov.fh = fh;

	/* check if our current overlay is active */
	if (IS_OVERLAY_ACTIVE(fh) != 0) {
		saa7146_stop_preview(fh);
		saa7146_start_preview(fh);
	}
	return 0;
}

static int vidioc_enum_input(struct file *file, void *fh, struct v4l2_input *i)
{
	DEB_EE(("VIDIOC_ENUMINPUT %d.\n", i->index));
	if (i->index >= MXB_INPUTS)
		return -EINVAL;
	memcpy(i, &mxb_inputs[i->index], sizeof(struct v4l2_input));
	return 0;
}

static int vidioc_s_input(struct file *file, void *fh, unsigned int input)
{
	struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
	struct mxb *mxb = (struct mxb *)dev->ext_priv;
	int err = 0;
	int i = 0;

	DEB_EE(("VIDIOC_S_INPUT %d.\n", input));

	if (input >= MXB_INPUTS)
		return -EINVAL;

	mxb->cur_input = input;

	saa7146_set_hps_source_and_sync(dev, input_port_selection[input].hps_source,
			input_port_selection[input].hps_sync);

	/* prepare switching of tea6415c and saa7111a;
	   have a look at the 'background'-file for further informations  */
	switch (input) {
	case TUNER:
		i = SAA7115_COMPOSITE0;

		err = tea6415c_call(mxb, video, s_routing, 3, 17, 0);

		/* connect tuner-output always to multicable */
		if (!err)
			err = tea6415c_call(mxb, video, s_routing, 3, 13, 0);
		break;
	case AUX3_YC:
		/* nothing to be done here. aux3_yc is
		   directly connected to the saa711a */
		i = SAA7115_SVIDEO1;
		break;
	case AUX3:
		/* nothing to be done here. aux3 is
		   directly connected to the saa711a */
		i = SAA7115_COMPOSITE1;
		break;
	case AUX1:
		i = SAA7115_COMPOSITE0;
		err = tea6415c_call(mxb, video, s_routing, 1, 17, 0);
		break;
	}

	if (err)
		return err;

	/* switch video in saa7111a */
	if (saa7111a_call(mxb, video, s_routing, i, SAA7111_FMT_CCIR, 0))
		printk(KERN_ERR "VIDIOC_S_INPUT: could not address saa7111a.\n");

	/* switch the audio-source only if necessary */
	if (0 == mxb->cur_mute)
		tea6420_route_line(mxb, video_audio_connect[input]);

	return 0;
}

static int vidioc_try_fmt_vid_overlay(struct file *file, void *fh, struct v4l2_format *f)
{
	struct saa7146_dev *dev = ((struct saa7146_fh *)fh)->dev;
	struct saa7146_vv *vv = dev->vv_data;
	struct v4l2_window *win = &f->fmt.win;
	enum v4l2_field field;
	int maxw, maxh;

	DEB_EE("dev:%p\n", dev);

	if (NULL == vv->ov_fb.base) {
		DEB_D("no fb base set\n");
		return -EINVAL;
	}
	if (NULL == vv->ov_fmt) {
		DEB_D("no fb fmt set\n");
		return -EINVAL;
	}
	if (win->w.width < 48 || win->w.height < 32) {
		DEB_D("min width/height. (%d,%d)\n",
		      win->w.width, win->w.height);
		return -EINVAL;
	}
	if (win->clipcount > 16) {
		DEB_D("clipcount too big\n");
		return -EINVAL;
	}

	field = win->field;
	maxw  = vv->standard->h_max_out;
	maxh  = vv->standard->v_max_out;

	if (V4L2_FIELD_ANY == field) {
		field = (win->w.height > maxh / 2)
			? V4L2_FIELD_INTERLACED
			: V4L2_FIELD_TOP;
		}
	switch (field) {
	case V4L2_FIELD_TOP:
	case V4L2_FIELD_BOTTOM:
	case V4L2_FIELD_ALTERNATE:
		maxh = maxh / 2;
		break;
	case V4L2_FIELD_INTERLACED:
		break;
	default:
		DEB_D("no known field mode '%d'\n", field);
		return -EINVAL;
	}

	win->field = field;
	if (win->w.width > maxw)
		win->w.width = maxw;
	if (win->w.height > maxh)
		win->w.height = maxh;

	return 0;
}

void ttpci_budget_irq10_handler (struct saa7146_dev* dev, u32 *isr) 
{
	struct budget *budget = (struct budget*)dev->ext_priv;

	DEB_EE(("dev: %p, budget: %p\n",dev,budget));

	if (*isr & MASK_10)
		tasklet_schedule (&budget->vpe_tasklet);
}