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/*
cx231xx_vbi.h - driver for Conexant Cx23100/101/102 USB video capture devices
Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
Based on cx88 driver
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, or
(at your option) any later version.
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _CX231XX_VBI_H
#define _CX231XX_VBI_H
extern struct videobuf_queue_ops cx231xx_vbi_qops;
#define NTSC_VBI_START_LINE 10 /* line 10 - 21 */
#define NTSC_VBI_END_LINE 21
#define NTSC_VBI_LINES (NTSC_VBI_END_LINE - NTSC_VBI_START_LINE + 1)
#define PAL_VBI_START_LINE 6
#define PAL_VBI_END_LINE 23
#define PAL_VBI_LINES (PAL_VBI_END_LINE - PAL_VBI_START_LINE + 1)
#define VBI_STRIDE 1440
#define VBI_SAMPLES_PER_LINE 1440
#define CX231XX_NUM_VBI_PACKETS 4
#define CX231XX_NUM_VBI_BUFS 5
/* stream functions */
int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets,
int num_bufs, int max_pkt_size,
int (*isoc_copy) (struct cx231xx *dev, struct urb *urb));
void cx231xx_uninit_vbi_isoc(struct cx231xx *dev);
/* vbi data copy functions */
u32 cx231xx_get_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
u8 sav_eav, u8 *p_buffer, u32 buffer_size);
u32 cx231xx_copy_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
u8 *p_line, u32 length, int field_number);
void cx231xx_reset_vbi_buffer(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q);
int cx231xx_do_vbi_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q,
u8 *p_buffer, u32 bytes_to_copy);
u8 cx231xx_is_vbi_buffer_done(struct cx231xx *dev,struct cx231xx_dmaqueue *dma_q);
#endif
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