saa7134-video.c

优龙2410linux2.6.8内核源代码

			crop->c.top = b->top + b->height;
		if (crop->c.height > b->top - crop->c.top + b->height)
			crop->c.height = b->top - crop->c.top + b->height;

		if (crop->c.left < b->left)
			crop->c.top = b->left;
		if (crop->c.left > b->left + b->width)
			crop->c.top = b->left + b->width;
		if (crop->c.width > b->left - crop->c.left + b->width)
			crop->c.width = b->left - crop->c.left + b->width;

		dev->crop_current = crop->c;
		return 0;
	}

	/* --- tuner ioctls ------------------------------------------ */
	case VIDIOC_G_TUNER:
	{
		struct v4l2_tuner *t = arg;
		int n;

		if (0 != t->index)
			return -EINVAL;
		memset(t,0,sizeof(*t));
		for (n = 0; n < SAA7134_INPUT_MAX; n++)
			if (card_in(dev,n).tv)
				break;
		if (NULL != card_in(dev,n).name) {
			strcpy(t->name, "Television");
			t->capability = V4L2_TUNER_CAP_NORM |
				V4L2_TUNER_CAP_STEREO |
				V4L2_TUNER_CAP_LANG1 |
				V4L2_TUNER_CAP_LANG2;
			t->rangehigh = 0xffffffffUL;
			t->rxsubchans = saa7134_tvaudio_getstereo(dev);
			t->audmode = saa7134_tvaudio_rx2mode(t->rxsubchans);
		}
		if (0 != (saa_readb(SAA7134_STATUS_VIDEO1) & 0x03))
			t->signal = 0xffff;
		return 0;
	}
	case VIDIOC_S_TUNER:
	{
		struct v4l2_tuner *t = arg;
		int rx,mode;

		mode = dev->thread.mode;
		if (UNSET == mode) {
			rx   = saa7134_tvaudio_getstereo(dev);
			mode = saa7134_tvaudio_rx2mode(t->rxsubchans);
		}
		if (mode != t->audmode) {
			dev->thread.mode = t->audmode;
		}
		return 0;
	}
	case VIDIOC_G_FREQUENCY:
	{
		struct v4l2_frequency *f = arg;

		memset(f,0,sizeof(*f));
		f->type = V4L2_TUNER_ANALOG_TV;
		f->frequency = dev->ctl_freq;
		return 0;
	}
	case VIDIOC_S_FREQUENCY:
	{
		struct v4l2_frequency *f = arg;

		if (0 != f->tuner)
			return -EINVAL;
		if (V4L2_TUNER_ANALOG_TV != f->type)
			return -EINVAL;
		down(&dev->lock);
		dev->ctl_freq = f->frequency;
#ifdef V4L2_I2C_CLIENTS
		saa7134_i2c_call_clients(dev,VIDIOC_S_FREQUENCY,f);
#else
		saa7134_i2c_call_clients(dev,VIDIOCSFREQ,&dev->ctl_freq);
#endif
		saa7134_tvaudio_do_scan(dev);
		up(&dev->lock);
		return 0;
	}
		
	/* --- control ioctls ---------------------------------------- */
	case VIDIOC_ENUMINPUT:
	case VIDIOC_G_INPUT:
	case VIDIOC_S_INPUT:
	case VIDIOC_QUERYCTRL:
	case VIDIOC_G_CTRL:
	case VIDIOC_S_CTRL:
		return saa7134_common_ioctl(dev, cmd, arg);

	case VIDIOC_G_AUDIO:
	{
		struct v4l2_audio *a = arg;

		memset(a,0,sizeof(*a));
		strcpy(a->name,"audio");
		return 0;
	}
	case VIDIOC_S_AUDIO:
		return 0;
        case VIDIOC_G_PARM:
        {
                struct v4l2_captureparm *parm = arg;
                memset(parm,0,sizeof(*parm));
                return 0;
        }

#ifdef VIDIOC_G_PRIORITY
        case VIDIOC_G_PRIORITY:
        {
                enum v4l2_priority *p = arg;

                *p = v4l2_prio_max(&dev->prio);
                return 0;
        }
        case VIDIOC_S_PRIORITY:
        {
                enum v4l2_priority *prio = arg;

                return v4l2_prio_change(&dev->prio, &fh->prio, *prio);
        }
#endif

	/* --- preview ioctls ---------------------------------------- */
	case VIDIOC_ENUM_FMT:
	{
		struct v4l2_fmtdesc *f = arg;
		enum v4l2_buf_type type;
		unsigned int index;

		index = f->index;
		type  = f->type;
		switch (type) {
		case V4L2_BUF_TYPE_VIDEO_CAPTURE:
		case V4L2_BUF_TYPE_VIDEO_OVERLAY:
			if (index >= FORMATS)
				return -EINVAL;
			if (f->type == V4L2_BUF_TYPE_VIDEO_OVERLAY &&
			    formats[index].planar)
				return -EINVAL;
			memset(f,0,sizeof(*f));
			f->index = index;
			f->type  = type;
			strlcpy(f->description,formats[index].name,sizeof(f->description));
			f->pixelformat = formats[index].fourcc;
			break;
		case V4L2_BUF_TYPE_VBI_CAPTURE:
			if (0 != index)
				return -EINVAL;
			memset(f,0,sizeof(*f));
			f->index = index;
			f->type  = type;
			f->pixelformat = V4L2_PIX_FMT_GREY;
			strcpy(f->description,"vbi data");
			break;
		default:
			return -EINVAL;	
		}
		return 0;
	}
	case VIDIOC_G_FBUF:
	{
		struct v4l2_framebuffer *fb = arg;

		*fb = dev->ovbuf;
		fb->capability = V4L2_FBUF_CAP_LIST_CLIPPING;
		return 0;
	}
	case VIDIOC_S_FBUF:
	{
		struct v4l2_framebuffer *fb = arg;
		struct saa7134_format *fmt;
		
		if(!capable(CAP_SYS_ADMIN) &&
		   !capable(CAP_SYS_RAWIO))
			return -EPERM;

		/* check args */
		fmt = format_by_fourcc(fb->fmt.pixelformat);
		if (NULL == fmt)
			return -EINVAL;

		/* ok, accept it */
		dev->ovbuf = *fb;
		dev->ovfmt = fmt;
		if (0 == dev->ovbuf.fmt.bytesperline)
			dev->ovbuf.fmt.bytesperline =
				dev->ovbuf.fmt.width*fmt->depth/8;
		return 0;
	}
	case VIDIOC_OVERLAY:
	{
		int *on = arg;

		if (*on) {
			if (!res_get(dev,fh,RESOURCE_OVERLAY))
				return -EBUSY;
			spin_lock_irqsave(&dev->slock,flags);
			start_preview(dev,fh);
			spin_unlock_irqrestore(&dev->slock,flags);
		}
		if (!*on) {
			if (!res_check(fh, RESOURCE_OVERLAY))
				return -EINVAL;
			spin_lock_irqsave(&dev->slock,flags);
			stop_preview(dev,fh);
			spin_unlock_irqrestore(&dev->slock,flags);
			res_free(dev,fh,RESOURCE_OVERLAY);
		}
		return 0;
	}

	/* --- capture ioctls ---------------------------------------- */
	case VIDIOC_G_FMT:
	{
		struct v4l2_format *f = arg;
		return saa7134_g_fmt(dev,fh,f);
	}
	case VIDIOC_S_FMT:
	{
		struct v4l2_format *f = arg;
		return saa7134_s_fmt(dev,fh,f);
	}
	case VIDIOC_TRY_FMT:
	{
		struct v4l2_format *f = arg;
		return saa7134_try_fmt(dev,fh,f);
	}
	
	case VIDIOCGMBUF:
	{
		struct video_mbuf *mbuf = arg;
		struct videobuf_queue *q;
		struct v4l2_requestbuffers req;
		unsigned int i;

		q = saa7134_queue(fh);
		memset(&req,0,sizeof(req));
		req.type   = q->type;
		req.count  = gbuffers;
		req.memory = V4L2_MEMORY_MMAP;
		err = videobuf_reqbufs(file,q,&req);
		if (err < 0)
			return err;
		memset(mbuf,0,sizeof(*mbuf));
		mbuf->frames = req.count;
		mbuf->size   = 0;
		for (i = 0; i < mbuf->frames; i++) {
			mbuf->offsets[i]  = q->bufs[i]->boff;
			mbuf->size       += q->bufs[i]->bsize;
		}
		return 0;
	}
	case VIDIOC_REQBUFS:
		return videobuf_reqbufs(file,saa7134_queue(fh),arg);

	case VIDIOC_QUERYBUF:
		return videobuf_querybuf(saa7134_queue(fh),arg);

	case VIDIOC_QBUF:
		return videobuf_qbuf(file,saa7134_queue(fh),arg);

	case VIDIOC_DQBUF:
		return videobuf_dqbuf(file,saa7134_queue(fh),arg);

	case VIDIOC_STREAMON:
	{
		int res = saa7134_resource(fh);

                if (!res_get(dev,fh,res))
			return -EBUSY;
		return videobuf_streamon(file,saa7134_queue(fh));
	}
	case VIDIOC_STREAMOFF:
	{
		int res = saa7134_resource(fh);

		err = videobuf_streamoff(file,saa7134_queue(fh));
		if (err < 0)
			return err;
		res_free(dev,fh,res);
		return 0;
	}

	default:
		return v4l_compat_translate_ioctl(inode,file,cmd,arg,
						  video_do_ioctl);
	}
	return 0;
}

static int video_ioctl(struct inode *inode, struct file *file,
		       unsigned int cmd, unsigned long arg)
{
	return video_usercopy(inode, file, cmd, arg, video_do_ioctl);
}

static int radio_do_ioctl(struct inode *inode, struct file *file,
			  unsigned int cmd, void *arg)
{
	struct saa7134_fh *fh = file->private_data;
	struct saa7134_dev *dev = fh->dev;
	
	if (video_debug > 1)
		saa7134_print_ioctl(dev->name,cmd);
	switch (cmd) {
	case VIDIOC_QUERYCAP:
	{
		struct v4l2_capability *cap = arg;

		memset(cap,0,sizeof(*cap));
                strcpy(cap->driver, "saa7134");
		strlcpy(cap->card, saa7134_boards[dev->board].name,
			sizeof(cap->card));
		sprintf(cap->bus_info,"PCI:%s",pci_name(dev->pci));
		cap->version = SAA7134_VERSION_CODE;
		cap->capabilities = V4L2_CAP_TUNER;
		return 0;
	}
	case VIDIOC_G_TUNER:
	{
		struct v4l2_tuner *t = arg;

		if (0 != t->index)
			return -EINVAL;

		memset(t,0,sizeof(*t));
		strcpy(t->name, "Radio");
                t->rangelow  = (int)(65*16);
                t->rangehigh = (int)(108*16);

#ifdef V4L2_I2C_CLIENTS
		saa7134_i2c_call_clients(dev,VIDIOC_G_TUNER,t);
#else
		{
			struct video_tuner vt;
			memset(&vt,0,sizeof(vt));
			saa7134_i2c_call_clients(dev,VIDIOCGTUNER,&vt);
			t->signal = vt.signal;
		}
#endif
		return 0;
	}
	case VIDIOC_ENUMINPUT:
	{
		struct v4l2_input *i = arg;
		
		if (i->index != 0)
			return -EINVAL;
		strcpy(i->name,"Radio");
		i->type = V4L2_INPUT_TYPE_TUNER;
		return 0;
	}
	case VIDIOC_G_INPUT:
	{
		int *i = arg;
		*i = 0;
		return 0;
	}
	case VIDIOC_G_AUDIO:
	{
		struct v4l2_audio *a = arg;

		memset(a,0,sizeof(*a));
		strcpy(a->name,"Radio");
		return 0;
	}
	case VIDIOC_G_STD:
	{
		v4l2_std_id *id = arg;
		*id = 0;
		return 0;
	}
	case VIDIOC_S_AUDIO:
	case VIDIOC_S_TUNER:
	case VIDIOC_S_INPUT:
	case VIDIOC_S_STD:
		return 0;

	case VIDIOC_QUERYCTRL:
	{
		const struct v4l2_queryctrl *ctrl;
		struct v4l2_queryctrl *c = arg;

		if (c->id <  V4L2_CID_BASE ||
		    c->id >= V4L2_CID_LASTP1)
			return -EINVAL;
		if (c->id == V4L2_CID_AUDIO_MUTE) {
			ctrl = ctrl_by_id(c->id);
			*c = *ctrl;
		} else
			*c = no_ctrl;
		return 0;
	}

	case VIDIOC_G_CTRL:
	case VIDIOC_S_CTRL:
	case VIDIOC_G_FREQUENCY:
	case VIDIOC_S_FREQUENCY:
		return video_do_ioctl(inode,file,cmd,arg);
		
	default:
		return v4l_compat_translate_ioctl(inode,file,cmd,arg,
						  radio_do_ioctl);
	}
	return 0;
}

static int radio_ioctl(struct inode *inode, struct file *file,
		       unsigned int cmd, unsigned long arg)
{
	return video_usercopy(inode, file, cmd, arg, radio_do_ioctl);
}

static struct file_operations video_fops =
{
	.owner	  = THIS_MODULE,
	.open	  = video_open,
	.release  = video_release,
	.read	  = video_read,
	.poll     = video_poll,
	.mmap	  = video_mmap,
	.ioctl	  = video_ioctl,
	.llseek   = no_llseek,
};

static struct file_operations radio_fops =
{
	.owner	  = THIS_MODULE,
	.open	  = video_open,
	.release  = video_release,
	.ioctl	  = radio_ioctl,
	.llseek   = no_llseek,
};

/* ----------------------------------------------------------- */
/* exported stuff                                              */

struct video_device saa7134_video_template =
{
	.name          = "saa7134-video",
	.type          = VID_TYPE_CAPTURE|VID_TYPE_TUNER|VID_TYPE_OVERLAY|
	                 VID_TYPE_CLIPPING|VID_TYPE_SCALES,
	.hardware      = 0,
	.fops          = &video_fops,
	.minor         = -1,
};

struct video_device saa7134_vbi_template =
{
	.name          = "saa7134-vbi",
	.type          = VID_TYPE_TUNER|VID_TYPE_TELETEXT,
	.hardware      = 0,
	.fops          = &video_fops,
	.minor         = -1,
};

struct video_device saa7134_radio_template =
{
	.name          = "saa7134-radio",
	.type          = VID_TYPE_TUNER,
	.hardware      = 0,
	.fops          = &radio_fops,
	.minor         = -1,
};

int saa7134_video_init1(struct saa7134_dev *dev)
{
	/* sanitycheck insmod options */
	if (gbuffers < 2 || gbuffers > VIDEO_MAX_FRAME)
		gbuffers = 2;
	if (gbufsize < 0 || gbufsize > gbufsize_max)
		gbufsize = gbufsize_max;
	gbufsize = (gbufsize + PAGE_SIZE - 1) & PAGE_MASK;

	/* put some sensible defaults into the data structures ... */
	dev->ctl_bright     = ctrl_by_id(V4L2_CID_BRIGHTNESS)->default_value;
	dev->ctl_contrast   = ctrl_by_id(V4L2_CID_CONTRAST)->default_value;
	dev->ctl_hue        = ctrl_by_id(V4L2_CID_HUE)->default_value;
	dev->ctl_saturation = ctrl_by_id(V4L2_CID_SATURATION)->default_value;
	dev->ctl_volume     = ctrl_by_id(V4L2_CID_AUDIO_VOLUME)->default_value;

	dev->ctl_invert     = 0;
	dev->ctl_mute       = 1;
	dev->automute       = 0;

        INIT_LIST_HEAD(&dev->video_q.queue);
	init_timer(&dev->video_q.timeout);
	dev->video_q.timeout.function = saa7134_buffer_timeout;
	dev->video_q.timeout.data     = (unsigned long)(&dev->video_q);
	dev->video_q.dev              = dev;

	if (saa7134_boards[dev->board].video_out) {
		/* enable video output */
		int vo = saa7134_boards[dev->board].video_out;
		saa_writeb(SAA7134_VIDEO_PORT_CTRL0, video_out[vo][0]);
		saa_writeb(SAA7134_VIDEO_PORT_CTRL1, video_out[vo][1]);
		saa_writeb(SAA7134_VIDEO_PORT_CTRL2, video_out[vo][2]);
		saa_writeb(SAA7134_VIDEO_PORT_CTRL3, video_out[vo][3]);
		saa_writeb(SAA7134_VIDEO_PORT_CTRL4, video_out[vo][4]);
		saa_writeb(SAA7134_VIDEO_PORT_CTRL5, video_out[vo][5]);
		saa_writeb(SAA7134_VIDEO_PORT_CTRL6, video_out[vo][6]);
		saa_writeb(SAA7134_VIDEO_PORT_CTRL7, video_out[vo][7]);
		saa_writeb(SAA7134_VIDEO_PORT_CTRL8, video_out[vo][8]);
	}
 
	return 0;
}

int saa7134_video_init2(struct saa7134_dev *dev)
{
	/* init video hw */
	set_tvnorm(dev,&tvnorms[0]);
	video_mux(dev,0);
	saa7134_tvaudio_setmute(dev);
	saa7134_tvaudio_setvolume(dev,dev->ctl_volume);
	return 0;
}

int saa7134_video_fini(struct saa7134_dev *dev)
{
	/* nothing */
	return 0;
}

void saa7134_irq_video_intl(struct saa7134_dev *dev)
{
	static const char *st[] = {
		"no signal", "found NTSC", "found PAL", "found SECAM" };
	int norm;

	norm = saa_readb(SAA7134_STATUS_VIDEO1) & 0x03;
	dprintk("DCSDT: %s\n",st[norm]);
	
	if (0 != norm) {
		/* wake up tvaudio audio carrier scan thread */
		saa7134_tvaudio_do_scan(dev);
	} else {
		/* no video signal -> mute audio */
		dev->automute = 1;
		saa7134_tvaudio_setmute(dev);
	}
}

void saa7134_irq_video_done(struct saa7134_dev *dev, unsigned long status)
{
	enum v4l2_field field;
	
	spin_lock(&dev->slock);
	if (dev->video_q.curr) {
		dev->video_fieldcount++;
		field = dev->video_q.curr->vb.field;
		if (V4L2_FIELD_HAS_BOTH(field)) {
			/* make sure we have seen both fields */
			if ((status & 0x10) == 0x00) {
				dev->video_q.curr->top_seen = 1;
				goto done;
			}
			if (!dev->video_q.curr->top_seen)
				goto done;
		} else if (field == V4L2_FIELD_TOP) {
			if ((status & 0x10) != 0x10)
				goto done;
		} else if (field == V4L2_FIELD_BOTTOM) {
			if ((status & 0x10) != 0x00)
				goto done;
		}
		dev->video_q.curr->vb.field_count = dev->video_fieldcount;
		saa7134_buffer_finish(dev,&dev->video_q,STATE_DONE);
	}
	saa7134_buffer_next(dev,&dev->video_q);

 done:
	spin_unlock(&dev->slock);
}

/* ----------------------------------------------------------- */
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */