path: root/drivers/media/video/pvrusb2/pvrusb2-v4l2.c

/*
 *
 *  $Id$
 *
 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
 *  Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/kernel.h>
#include <linux/version.h>
#include "pvrusb2-context.h"
#include "pvrusb2-hdw.h"
#include "pvrusb2.h"
#include "pvrusb2-debug.h"
#include "pvrusb2-v4l2.h"
#include "pvrusb2-ioread.h"
#include <linux/videodev2.h>
#include <media/v4l2-dev.h>
#include <media/v4l2-common.h>

struct pvr2_v4l2_dev;
struct pvr2_v4l2_fh;
struct pvr2_v4l2;

struct pvr2_v4l2_dev {
	struct video_device devbase; /* MUST be first! */
	struct pvr2_v4l2 *v4lp;
	struct pvr2_context_stream *stream;
	enum pvr2_config config;
};

struct pvr2_v4l2_fh {
	struct pvr2_channel channel;
	struct pvr2_v4l2_dev *dev_info;
	enum v4l2_priority prio;
	struct pvr2_ioread *rhp;
	struct file *file;
	struct pvr2_v4l2 *vhead;
	struct pvr2_v4l2_fh *vnext;
	struct pvr2_v4l2_fh *vprev;
	wait_queue_head_t wait_data;
	int fw_mode_flag;
};

struct pvr2_v4l2 {
	struct pvr2_channel channel;
	struct pvr2_v4l2_fh *vfirst;
	struct pvr2_v4l2_fh *vlast;

	struct v4l2_prio_state prio;

	/* streams */
	struct pvr2_v4l2_dev *vdev;
};

static int video_nr[PVR_NUM] = {[0 ... PVR_NUM-1] = -1};
module_param_array(video_nr, int, NULL, 0444);
MODULE_PARM_DESC(video_nr, "Offset for device's minor");

static struct v4l2_capability pvr_capability ={
	.driver         = "pvrusb2",
	.card           = "Hauppauge WinTV pvr-usb2",
	.bus_info       = "usb",
	.version        = KERNEL_VERSION(0,8,0),
	.capabilities   = (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_VBI_CAPTURE |
			   V4L2_CAP_TUNER | V4L2_CAP_AUDIO |
			   V4L2_CAP_READWRITE),
	.reserved       = {0,0,0,0}
};

static struct v4l2_tuner pvr_v4l2_tuners[]= {
	{
		.index      = 0,
		.name       = "TV Tuner",
		.type           = V4L2_TUNER_ANALOG_TV,
		.capability     = (V4L2_TUNER_CAP_NORM |
				   V4L2_TUNER_CAP_STEREO |
				   V4L2_TUNER_CAP_LANG1 |
				   V4L2_TUNER_CAP_LANG2),
		.rangelow   = 0,
		.rangehigh  = 0,
		.rxsubchans     = V4L2_TUNER_SUB_STEREO,
		.audmode        = V4L2_TUNER_MODE_STEREO,
		.signal         = 0,
		.afc            = 0,
		.reserved       = {0,0,0,0}
	}
};

static struct v4l2_fmtdesc pvr_fmtdesc [] = {
	{
		.index          = 0,
		.type           = V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.flags          = V4L2_FMT_FLAG_COMPRESSED,
		.description    = "MPEG1/2",
		// This should really be V4L2_PIX_FMT_MPEG, but xawtv
		// breaks when I do that.
		.pixelformat    = 0, // V4L2_PIX_FMT_MPEG,
		.reserved       = { 0, 0, 0, 0 }
	}
};

#define PVR_FORMAT_PIX  0
#define PVR_FORMAT_VBI  1

static struct v4l2_format pvr_format [] = {
	[PVR_FORMAT_PIX] = {
		.type   = V4L2_BUF_TYPE_VIDEO_CAPTURE,
		.fmt    = {
			.pix        = {
				.width          = 720,
				.height             = 576,
				// This should really be V4L2_PIX_FMT_MPEG,
				// but xawtv breaks when I do that.
				.pixelformat    = 0, // V4L2_PIX_FMT_MPEG,
				.field          = V4L2_FIELD_INTERLACED,
				.bytesperline