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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 (*bulk_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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