blob: 2267b16f0420863c7058f327d9f8d14e827e624b
| 1 | /* |
| 2 | * libzvbi -- Closed Caption decoder |
| 3 | * |
| 4 | * Copyright (C) 2000, 2001, 2002 Michael H. Schimek |
| 5 | * |
| 6 | * This library is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Library General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * This library is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Library General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Library General Public |
| 17 | * License along with this library; if not, write to the |
| 18 | * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 19 | * Boston, MA 02110-1301 USA. |
| 20 | */ |
| 21 | |
| 22 | /* $Id: cc.h,v 1.9 2008/02/19 00:35:15 mschimek Exp $ */ |
| 23 | |
| 24 | #ifndef CC_H |
| 25 | #define CC_H |
| 26 | |
| 27 | #include <pthread.h> |
| 28 | |
| 29 | #include "bcd.h" |
| 30 | #include "format.h" |
| 31 | |
| 32 | #ifndef VBI_DECODER |
| 33 | #define VBI_DECODER |
| 34 | typedef struct vbi_decoder vbi_decoder; |
| 35 | #endif |
| 36 | |
| 37 | typedef struct { |
| 38 | int count; |
| 39 | int chksum; |
| 40 | uint8_t buffer[32]; |
| 41 | } xds_sub_packet; |
| 42 | |
| 43 | typedef enum { |
| 44 | MODE_NONE, |
| 45 | MODE_POP_ON, |
| 46 | MODE_PAINT_ON, |
| 47 | MODE_ROLL_UP, |
| 48 | MODE_TEXT |
| 49 | } cc_mode; |
| 50 | |
| 51 | typedef struct { |
| 52 | cc_mode mode; |
| 53 | |
| 54 | int col, col1; |
| 55 | int row, row1; |
| 56 | int roll; |
| 57 | |
| 58 | int nul_ct; // XXX should be 'silence count' |
| 59 | double time; |
| 60 | unsigned char * language; /* Latin-1 */ |
| 61 | |
| 62 | vbi_char attr; |
| 63 | vbi_char * line; |
| 64 | |
| 65 | int hidden; |
| 66 | vbi_page pg[2]; |
| 67 | } cc_channel; |
| 68 | |
| 69 | struct caption { |
| 70 | pthread_mutex_t mutex; |
| 71 | |
| 72 | uint8_t last[2]; /* field 1, cc command repetition */ |
| 73 | |
| 74 | int curr_chan; |
| 75 | vbi_char transp_space[2]; /* caption, text mode */ |
| 76 | cc_channel channel[9]; /* caption 1-4, text 1-4, garbage */ |
| 77 | |
| 78 | xds_sub_packet sub_packet[4][0x18]; |
| 79 | xds_sub_packet * curr_sp; |
| 80 | int xds; |
| 81 | |
| 82 | uint8_t itv_buf[256]; |
| 83 | int itv_count; |
| 84 | |
| 85 | int info_cycle[2]; |
| 86 | }; |
| 87 | |
| 88 | /* Public */ |
| 89 | |
| 90 | /** |
| 91 | * @addtogroup Cache |
| 92 | * @{ |
| 93 | */ |
| 94 | extern vbi_bool vbi_fetch_cc_page(vbi_decoder *vbi, vbi_page *pg, |
| 95 | vbi_pgno pgno, vbi_bool reset); |
| 96 | /** @} */ |
| 97 | |
| 98 | /* Private */ |
| 99 | |
| 100 | extern void vbi_caption_init(vbi_decoder *vbi); |
| 101 | extern void vbi_caption_destroy(vbi_decoder *vbi); |
| 102 | extern void vbi_decode_caption(vbi_decoder *vbi, int line, uint8_t *buf); |
| 103 | extern void vbi_caption_desync(vbi_decoder *vbi); |
| 104 | extern void vbi_caption_channel_switched(vbi_decoder *vbi); |
| 105 | extern void vbi_caption_color_level(vbi_decoder *vbi); |
| 106 | |
| 107 | #endif /* CC_H */ |
| 108 | |
| 109 | /* |
| 110 | Local variables: |
| 111 | c-set-style: K&R |
| 112 | c-basic-offset: 8 |
| 113 | End: |
| 114 | */ |
| 115 |