/* 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 const 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