| | 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 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 |
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