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53 lines
1.6 KiB
53 lines
1.6 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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cx231xx_vbi.h - driver for Conexant Cx23100/101/102 USB video capture devices |
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Copyright (C) 2008 <srinivasa.deevi at conexant dot com> |
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Based on cx88 driver |
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*/ |
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#ifndef _CX231XX_VBI_H |
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#define _CX231XX_VBI_H |
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extern struct vb2_ops cx231xx_vbi_qops; |
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#define NTSC_VBI_START_LINE 10 /* line 10 - 21 */ |
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#define NTSC_VBI_END_LINE 21 |
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#define NTSC_VBI_LINES (NTSC_VBI_END_LINE-NTSC_VBI_START_LINE+1) |
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#define PAL_VBI_START_LINE 6 |
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#define PAL_VBI_END_LINE 23 |
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#define PAL_VBI_LINES (PAL_VBI_END_LINE-PAL_VBI_START_LINE+1) |
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#define VBI_STRIDE 1440 |
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#define VBI_SAMPLES_PER_LINE 1440 |
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#define CX231XX_NUM_VBI_PACKETS 4 |
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#define CX231XX_NUM_VBI_BUFS 5 |
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/* stream functions */ |
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int cx231xx_init_vbi_isoc(struct cx231xx *dev, int max_packets, |
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int num_bufs, int max_pkt_size, |
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int (*bulk_copy) (struct cx231xx *dev, |
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struct urb *urb)); |
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void cx231xx_uninit_vbi_isoc(struct cx231xx *dev); |
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/* vbi data copy functions */ |
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u32 cx231xx_get_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, |
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u8 sav_eav, u8 *p_buffer, u32 buffer_size); |
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u32 cx231xx_copy_vbi_line(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, |
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u8 *p_line, u32 length, int field_number); |
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void cx231xx_reset_vbi_buffer(struct cx231xx *dev, |
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struct cx231xx_dmaqueue *dma_q); |
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int cx231xx_do_vbi_copy(struct cx231xx *dev, struct cx231xx_dmaqueue *dma_q, |
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u8 *p_buffer, u32 bytes_to_copy); |
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u8 cx231xx_is_vbi_buffer_done(struct cx231xx *dev, |
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struct cx231xx_dmaqueue *dma_q); |
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#endif
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