1 /* 2 cx231xx_vbi.h - driver for Conexant Cx23100/101/102 USB video capture devices 3 4 Copyright (C) 2008 <srinivasa.deevi at conexant dot com> 5 Based on cx88 driver 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License as published by 9 the Free Software Foundation; either version 2 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 GNU General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program; if not, write to the Free Software 19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22 #ifndef _CX231XX_VBI_H 23 #define _CX231XX_VBI_H 24 25 extern const struct videobuf_queue_ops cx231xx_vbi_qops; 26 27 #define NTSC_VBI_START_LINE 10 /* line 10 - 21 */ 28 #define NTSC_VBI_END_LINE 21 29 #define NTSC_VBI_LINES (NTSC_VBI_END_LINE-NTSC_VBI_START_LINE+1) 30 31 #define PAL_VBI_START_LINE 6 32 #define PAL_VBI_END_LINE 23 33 #define PAL_VBI_LINES (PAL_VBI_END_LINE-PAL_VBI_START_LINE+1) 34 35 #define VBI_STRIDE 1440 36 #define VBI_SAMPLES_PER_LINE 1440 37 38 #define CX231XX_NUM_VBI_PACKETS 4 39 #define CX231XX_NUM_VBI_BUFS 5 40 41 /* stream functions */ 42 int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets, 43 int num_bufs, int max_pkt_size, 44 int (*bulk_copy) (struct cx231xx *dev, 45 struct urb *urb)); 46 47 void cx231xx_uninit_vbi_isoc(struct cx231xx *dev); 48 49 /* vbi data copy functions */ 50 u32 cx231xx_get_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, 51 u8 sav_eav, u8 *p_buffer, u32 buffer_size); 52 53 u32 cx231xx_copy_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, 54 u8 *p_line, u32 length, int field_number); 55 56 void cx231xx_reset_vbi_buffer(struct cx231xx *dev, 57 struct cx231xx_dmaqueue *dma_q); 58 59 int cx231xx_do_vbi_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, 60 u8 *p_buffer, u32 bytes_to_copy); 61 62 u8 cx231xx_is_vbi_buffer_done(struct cx231xx *dev, 63 struct cx231xx_dmaqueue *dma_q); 64 65 #endif 66