From a9474b0b39b999ef17163bec9337a96a72ddb458 Mon Sep 17 00:00:00 2001 From: cehoyos Date: Thu, 29 Oct 2009 22:13:04 +0000 Subject: Move teletext specific code from stream into libmpcodecs. Patch by Francesco Lavra, francescolavra interfree it git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@29801 b3059339-0415-0410-9bf9-f77b7e298cf2 --- stream/tv.c | 1 + stream/tv.h | 108 --- stream/tvi_def.h | 2 - stream/tvi_dshow.c | 1 + stream/tvi_v4l.c | 1 + stream/tvi_v4l2.c | 1 + stream/tvi_vbi.c | 1850 ---------------------------------------------------- 7 files changed, 4 insertions(+), 1960 deletions(-) delete mode 100644 stream/tvi_vbi.c (limited to 'stream') diff --git a/stream/tv.c b/stream/tv.c index 34e184a37f..7e7ba263fa 100644 --- a/stream/tv.c +++ b/stream/tv.c @@ -29,6 +29,7 @@ #include "libaf/af_format.h" #include "libmpcodecs/img_format.h" +#include "libmpcodecs/dec_teletext.h" #include "libavutil/avstring.h" #include "osdep/timer.h" diff --git a/stream/tv.h b/stream/tv.h index d177628e85..1ec112fee2 100644 --- a/stream/tv.h +++ b/stream/tv.h @@ -221,40 +221,6 @@ typedef struct { //tvi_* ioctl (not tvi_vbi.c !!!) #define TVI_CONTROL_VBI_INIT 0x501 ///< vbi init -/* - TELETEXT controls (through teletext_control() ) - NOTE: - _SET_ should be _GET_ +1 - _STEP_ should be _GET_ +2 -*/ -#define TV_VBI_CONTROL_GET_MODE 0x510 ///< get current mode teletext -#define TV_VBI_CONTROL_SET_MODE 0x511 ///< on/off grab teletext - -#define TV_VBI_CONTROL_GET_PAGE 0x513 ///< get grabbed teletext page -#define TV_VBI_CONTROL_SET_PAGE 0x514 ///< set grab teletext page number -#define TV_VBI_CONTROL_STEP_PAGE 0x515 ///< step grab teletext page number - -#define TV_VBI_CONTROL_GET_SUBPAGE 0x516 ///< get grabbed teletext page -#define TV_VBI_CONTROL_SET_SUBPAGE 0x517 ///< set grab teletext page number - -#define TV_VBI_CONTROL_GET_FORMAT 0x519 ///< get teletext format -#define TV_VBI_CONTROL_SET_FORMAT 0x51a ///< set teletext format - -#define TV_VBI_CONTROL_GET_HALF_PAGE 0x51c ///< get current half page -#define TV_VBI_CONTROL_SET_HALF_PAGE 0x51d ///< switch half page - -#define TV_VBI_CONTROL_IS_CHANGED 0x540 ///< teletext page is changed -#define TV_VBI_CONTROL_MARK_UNCHANGED 0x541 ///< teletext page is changed - -#define TV_VBI_CONTROL_ADD_DEC 0x550 ///< add page number with dec -#define TV_VBI_CONTROL_GO_LINK 0x551 ///< go link (1..6) NYI -#define TV_VBI_CONTROL_GET_VBIPAGE 0x552 ///< get vbi_image for grabbed teletext page -#define TV_VBI_CONTROL_RESET 0x553 ///< vbi reset -#define TV_VBI_CONTROL_START 0x554 ///< vbi start -#define TV_VBI_CONTROL_STOP 0x555 ///< vbi stop -#define TV_VBI_CONTROL_DECODE_PAGE 0x556 ///< decode vbi page -#define TV_VBI_CONTROL_GET_NETWORKNAME 0x557 ///< get current network name - int tv_set_color_options(tvi_handle_t *tvh, int opt, int val); int tv_get_color_options(tvi_handle_t *tvh, int opt, int* val); #define TV_COLOR_BRIGHTNESS 1 @@ -292,78 +258,4 @@ void tv_start_scan(tvi_handle_t *tvh, int start); #define TV_NORM_PALN 6 #define TV_NORM_NTSCJP 7 -#define VBI_TFORMAT_TEXT 0 ///< text mode -#define VBI_TFORMAT_BW 1 ///< black&white mode -#define VBI_TFORMAT_GRAY 2 ///< grayscale mode -#define VBI_TFORMAT_COLOR 3 ///< color mode (require color_spu patch!) - -#define VBI_MAX_PAGES 0x800 ///< max sub pages number -#define VBI_MAX_SUBPAGES 64 ///< max sub pages number - -#define VBI_ROWS 25 ///< teletext page height in rows -#define VBI_COLUMNS 40 ///< teletext page width in chars -#define VBI_TIME_LINEPOS 26 ///< time line pos in page header - -typedef -enum{ - TT_FORMAT_OPAQUE=0, ///< opaque - TT_FORMAT_TRANSPARENT, ///< transparent - TT_FORMAT_OPAQUE_INV, ///< opaque with inverted colors - TT_FORMAT_TRANSPARENT_INV ///< transparent with inverted colors -} teletext_format; - -typedef -enum{ - TT_ZOOM_NORMAL=0, - TT_ZOOM_TOP_HALF, - TT_ZOOM_BOTTOM_HALF -} teletext_zoom; - -typedef struct tt_char_s{ - unsigned int unicode; ///< unicode (utf8) character - unsigned char fg; ///< foreground color - unsigned char bg; ///< background color - unsigned char gfx; ///< 0-no gfx, 1-solid gfx, 2-separated gfx - unsigned char flh; ///< 0-no flash, 1-flash - unsigned char hidden; ///< char is hidden (for subtitle pages) - unsigned char ctl; ///< control character - unsigned char lng; ///< lang: 0-secondary language,1-primary language - unsigned char raw; ///< raw character (as received from device) -} tt_char; - -typedef struct tt_link_s{ - int pagenum; ///< page number - int subpagenum; ///< subpage number -} tt_link_t; - -typedef struct tt_page_s{ - int pagenum; ///< page number - int subpagenum; ///< subpage number - unsigned char primary_lang; ///< primary language code - unsigned char secondary_lang; ///< secondary language code - unsigned char active; ///< page is complete and ready for rendering - unsigned char flags; ///< page flags - unsigned char raw[VBI_ROWS*VBI_COLUMNS]; ///< page data - struct tt_page_s* next_subpage; - struct tt_link_s links[6]; -} tt_page; - -#define TT_PGFL_SUPPRESS_HEADER 0x01 -#define TT_PGFL_UPDATE_INDICATOR 0x02 -#define TT_PGFL_INTERRUPTED_SEQ 0x04 -#define TT_PGFL_INHIBIT_DISPLAY 0x08 -#define TT_PGFL_NEWFLASH 0x10 -#define TT_PGFL_SUBTITLE 0x20 -#define TT_PGFL_ERASE_PAGE 0x40 -#define TT_PGFL_MAGAZINE_SERIAL 0x80 - -typedef struct tt_stream_props_s{ - int sampling_rate; - int samples_per_line; - int offset; - int count[2]; ///< number of lines in first and second fields - int interlaced; ///< vbi data are interlaced - int bufsize; ///< required buffer size -} tt_stream_props; - #endif /* MPLAYER_TV_H */ diff --git a/stream/tvi_def.h b/stream/tvi_def.h index 3c0ef8edb0..f15fcce481 100644 --- a/stream/tvi_def.h +++ b/stream/tvi_def.h @@ -15,8 +15,6 @@ static int get_video_framesize(priv_t *priv); static double grab_audio_frame(priv_t *priv, char *buffer, int len); static int get_audio_framesize(priv_t *priv); -int teletext_control(void* p, int cmd, void *arg); - static const tvi_functions_t functions = { init, diff --git a/stream/tvi_dshow.c b/stream/tvi_dshow.c index 37816f82cb..99c719f409 100644 --- a/stream/tvi_dshow.c +++ b/stream/tvi_dshow.c @@ -76,6 +76,7 @@ #include #include "libmpcodecs/img_format.h" +#include "libmpcodecs/dec_teletext.h" #include "libaf/af_format.h" #include "help_mp.h" #include "osdep/timer.h" diff --git a/stream/tvi_v4l.c b/stream/tvi_v4l.c index ea7064762c..07cbc540bb 100644 --- a/stream/tvi_v4l.c +++ b/stream/tvi_v4l.c @@ -40,6 +40,7 @@ #include "mp_msg.h" #include "libaf/af_format.h" #include "libmpcodecs/img_format.h" +#include "libmpcodecs/dec_teletext.h" #include "libvo/fastmemcpy.h" #include "libvo/videodev_mjpeg.h" diff --git a/stream/tvi_v4l2.c b/stream/tvi_v4l2.c index 786d42529e..0de15d245f 100644 --- a/stream/tvi_v4l2.c +++ b/stream/tvi_v4l2.c @@ -53,6 +53,7 @@ known issues: #include #include "mp_msg.h" #include "libmpcodecs/img_format.h" +#include "libmpcodecs/dec_teletext.h" #include "libaf/af_format.h" #include "tv.h" #include "audio_in.h" diff --git a/stream/tvi_vbi.c b/stream/tvi_vbi.c deleted file mode 100644 index a2aa530f7a..0000000000 --- a/stream/tvi_vbi.c +++ /dev/null @@ -1,1850 +0,0 @@ -/* - * Teletext support - * - * Copyright (C) 2007 Vladimir Voroshilov - * - * This file is part of MPlayer. - * - * MPlayer 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. - * - * MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - * - * - * Based on Attila Otvos' teletext patch, Michael Niedermayer's - * proof-of-concept teletext capture utility and some parts - * (decode_raw_line_runin,pll_add,pll_reset) of MythTV project. - * Code for calculating [soc:eoc] is based on aletv of Edgar Toernig. - * - * Teletext system is described in - * ETS 300 706 "Enhanced Teletext specification" : May 1997 - * http://www.themm.net/~mihu/linux/saa7146/specs/ets_300706e01p.pdf - * - * Some implementation details: - * How to port teletext to another tvi_* driver (see tvi_v4l2.c for example): - * - * 1. Implement TVI_CONTROL_VBI_INIT (initialize driver-related vbi subsystem, - * start grabbing thread) - * input data: vbi device name. - * (driver should also call TV_VBI_CONTROL_START for common vbi subsystem initialization - * with pointer to initialized tt_stream_properties structure. - * After ioctl call variable will contain pointer to initialized priv_vbi_t structure. - * - * 2. After receiving next chunk of raw vbi data call TV_VBI_CONTROL_DECODE_PAGE - * ioctl with pointer to data buffer - * 3. pass all other VBI related ioctl cmds to teletext_control routine - * - * Page displaying process consist of following stages: - * - * ---grabbing stage--- - * 0. stream/tvi_*.c: vbi_grabber(...) - * getting vbi data from video device - * ---decoding stage--- - * 1. stream/tvi_vbi.c: decode_raw_line_runin(...) or decode_raw_line_sine(...) - * decode raw vbi data into sliced 45(?) bytes long packets - * 2. stream/tvi_vbi.c: decode_pkt0(...), decode_pkt_page(...) - * packets processing (header analyzing, storing complete page in cache, - * only raw member of tt_char is filled at this stage) - * 3. stream/tvi_vbi.c: decode_page(...) - * page decoding. filling unicode,gfx,ctl,etc members of tt_char structure - * with appropriate values according to teletext control chars, converting - * text to utf8. - * ---rendering stage--- - * 4. stream/tvi_vbi.c: prepare_visible_page(...) - * processing page. adding number of just received by background process - * teletext page, adding current time,etc. - * 5. libvo/sub.c: vo_update_text_teletext(...) - * rendering displayable osd with text and graphics - * - * TODO: - * v4lv1,bktr support - * spu rendering - * is better quality on poor signal possible ? - * link support - * font autoscale - * greyscale osd - * slave command for dumping pages - * fix bcd<->dec as suggested my Michael - * - * BUGS: - * wrong colors in debug dump - * blinking when visible page was just updated - */ - -#include "config.h" - -#include -#include -#include -#include -#include -#include - -#include - -#include "tv.h" -#include "mp_msg.h" -#include "help_mp.h" -#include "libmpcodecs/img_format.h" -#include "libavutil/common.h" -#include "input/input.h" -#include "osdep/timer.h" - -//#define DEBUG_DUMP 1 - -/// page magazine entry structure -typedef struct mag_s{ - tt_page* pt; - int order; -} mag_t; - -typedef struct { - int on; ///< teletext on/off - int pagenum; ///< seek page number - int subpagenum; ///< seek subpage - int curr_pagenum; ///< current page number - int pagenumdec; ///< set page num with dec - - teletext_format tformat; ///< see teletext_format enum - teletext_zoom zoom; ///< see teletext_zoom enum - mag_t* mag; ///< pages magazine (has 8 entities) - int primary_language; ///< primary character set - int secondary_language; ///< secondary character set - /// Currently displayed page (with additional info, e.g current time) - tt_char display_page[VBI_ROWS*VBI_COLUMNS]; - /// number of raw bytes between two subsequent encoded bits - int bpb; - /// clock run-in sequence will be searched in buffer in [soc:eoc] bytes range - int soc; - int eoc; - /// minimum number of raw vbi bytes wich can be decoded into 8 data bits - int bp8bl; - /// maximum number of raw vbi bytes wich can be decoded into 8 data bits - int bp8bh; - - int pll_adj; - int pll_dir; - int pll_cnt; - int pll_err; - int pll_lerr; - int pll_fixed; - /// vbi stream properties (buffer size,bytes per line, etc) - tt_stream_props* ptsp; - pthread_mutex_t buffer_mutex; - - tt_page** ptt_cache; - unsigned char* ptt_cache_first_subpage; - /// network info - unsigned char initialpage; - unsigned int initialsubpage; - unsigned int networkid; - int timeoffset; // timeoffset=realoffset*2 - unsigned int juliandate; - unsigned int universaltime; - unsigned char networkname[21]; - int cache_reset; - /// "page changed" flag: 0-unchanged, 1-entire page, 3-only header - int page_changed; - int last_rendered; -} priv_vbi_t; - -static unsigned char fixParity[256]; - -static const tt_char tt_space={0x20,7,0,0,0,0,0,0,0x20}; -static const tt_char tt_error={'?',1,0,0,0,0,0,0,'?'}; // Red '?' on black background -static double si[12]; -static double co[12]; - -#define VBI_FORMAT(priv) (*(priv->ptsp)) - -#define FIXP_SH 16 -#define ONE_FIXP (1<>FIXP_SH) -#define ANY2FIXP(a) ((int)((a)*ONE_FIXP)) - -static const unsigned char corrHamm48[256]={ - 0x01, 0xff, 0x01, 0x01, 0xff, 0x00, 0x01, 0xff, - 0xff, 0x02, 0x01, 0xff, 0x0a, 0xff, 0xff, 0x07, - 0xff, 0x00, 0x01, 0xff, 0x00, 0x00, 0xff, 0x00, - 0x06, 0xff, 0xff, 0x0b, 0xff, 0x00, 0x03, 0xff, - 0xff, 0x0c, 0x01, 0xff, 0x04, 0xff, 0xff, 0x07, - 0x06, 0xff, 0xff, 0x07, 0xff, 0x07, 0x07, 0x07, - 0x06, 0xff, 0xff, 0x05, 0xff, 0x00, 0x0d, 0xff, - 0x06, 0x06, 0x06, 0xff, 0x06, 0xff, 0xff, 0x07, - 0xff, 0x02, 0x01, 0xff, 0x04, 0xff, 0xff, 0x09, - 0x02, 0x02, 0xff, 0x02, 0xff, 0x02, 0x03, 0xff, - 0x08, 0xff, 0xff, 0x05, 0xff, 0x00, 0x03, 0xff, - 0xff, 0x02, 0x03, 0xff, 0x03, 0xff, 0x03, 0x03, - 0x04, 0xff, 0xff, 0x05, 0x04, 0x04, 0x04, 0xff, - 0xff, 0x02, 0x0f, 0xff, 0x04, 0xff, 0xff, 0x07, - 0xff, 0x05, 0x05, 0x05, 0x04, 0xff, 0xff, 0x05, - 0x06, 0xff, 0xff, 0x05, 0xff, 0x0e, 0x03, 0xff, - 0xff, 0x0c, 0x01, 0xff, 0x0a, 0xff, 0xff, 0x09, - 0x0a, 0xff, 0xff, 0x0b, 0x0a, 0x0a, 0x0a, 0xff, - 0x08, 0xff, 0xff, 0x0b, 0xff, 0x00, 0x0d, 0xff, - 0xff, 0x0b, 0x0b, 0x0b, 0x0a, 0xff, 0xff, 0x0b, - 0x0c, 0x0c, 0xff, 0x0c, 0xff, 0x0c, 0x0d, 0xff, - 0xff, 0x0c, 0x0f, 0xff, 0x0a, 0xff, 0xff, 0x07, - 0xff, 0x0c, 0x0d, 0xff, 0x0d, 0xff, 0x0d, 0x0d, - 0x06, 0xff, 0xff, 0x0b, 0xff, 0x0e, 0x0d, 0xff, - 0x08, 0xff, 0xff, 0x09, 0xff, 0x09, 0x09, 0x09, - 0xff, 0x02, 0x0f, 0xff, 0x0a, 0xff, 0xff, 0x09, - 0x08, 0x08, 0x08, 0xff, 0x08, 0xff, 0xff, 0x09, - 0x08, 0xff, 0xff, 0x0b, 0xff, 0x0e, 0x03, 0xff, - 0xff, 0x0c, 0x0f, 0xff, 0x04, 0xff, 0xff, 0x09, - 0x0f, 0xff, 0x0f, 0x0f, 0xff, 0x0e, 0x0f, 0xff, - 0x08, 0xff, 0xff, 0x05, 0xff, 0x0e, 0x0d, 0xff, - 0xff, 0x0e, 0x0f, 0xff, 0x0e, 0x0e, 0xff, 0x0e }; - - -enum { - LATIN=0, - CYRILLIC1, - CYRILLIC2, - CYRILLIC3, - GREEK, - LANGS -}; - -// conversion table for chars 0x20-0x7F (UTF8) -// TODO: add another languages -static const unsigned int lang_chars[LANGS][0x60]={ - { - //Latin - 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27, - 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f, - 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37, - 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f, - 0x40,0x41,0x42,0x43,0x44,0x45,0x46,0x47, - 0x48,0x49,0x4a,0x4b,0x4c,0x4d,0x4e,0x4f, - 0x50,0x51,0x52,0x53,0x54,0x55,0x56,0x57, - 0x58,0x59,0x5a,0x5b,0x5c,0x5d,0x5e,0x5f, - 0x60,0x61,0x62,0x63,0x64,0x65,0x66,0x67, - 0x68,0x69,0x6a,0x6b,0x6c,0x6d,0x6e,0x6f, - 0x70,0x71,0x72,0x73,0x74,0x75,0x76,0x77, - 0x78,0x79,0x7a,0x7b,0x7c,0x7d,0x7e,0x7f - }, - { - //Cyrillic-1 (Serbian/Croatian) - 0x20,0x21,0x22,0x23,0x24,0x25,0x044b,0x27, - 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f, - 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37, - 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f, - 0x0427,0x0410,0x0411,0x0426,0x0414,0x0415,0x0424,0x0413, - 0x0425,0x0418,0x0408,0x041a,0x041b,0x041c,0x041d,0x041e, - 0x041f,0x040c,0x0420,0x0421,0x0422,0x0423,0x0412,0x0403, - 0x0409,0x040a,0x0417,0x040b,0x0416,0x0402,0x0428,0x040f, - 0x0447,0x0430,0x0431,0x0446,0x0434,0x0435,0x0444,0x0433, - 0x0445,0x0438,0x0428,0x043a,0x043b,0x043c,0x043d,0x043e, - 0x043f,0x042c,0x0440,0x0441,0x0442,0x0443,0x0432,0x0423, - 0x0429,0x042a,0x0437,0x042b,0x0436,0x0422,0x0448,0x042f - }, - { - //Cyrillic-2 (Russian/Bulgarian) - 0x20,0x21,0x22,0x23,0x24,0x25,0x044b,0x27, - 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f, - 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37, - 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f, - 0x042e,0x0410,0x0411,0x0426,0x0414,0x0415,0x0424,0x0413, - 0x0425,0x0418,0x0419,0x041a,0x041b,0x041c,0x041d,0x041e, - 0x041f,0x042f,0x0420,0x0421,0x0422,0x0423,0x0416,0x0412, - 0x042c,0x042a,0x0417,0x0428,0x042d,0x0429,0x0427,0x042b, - 0x044e,0x0430,0x0431,0x0446,0x0434,0x0435,0x0444,0x0433, - 0x0445,0x0438,0x0439,0x043a,0x043b,0x043c,0x043d,0x043e, - 0x043f,0x044f,0x0440,0x0441,0x0442,0x0443,0x0436,0x0432, - 0x044c,0x044a,0x0437,0x0448,0x044d,0x0449,0x0447,0x044b - }, - { - //Cyrillic-3 (Ukrainian) - 0x20,0x21,0x22,0x23,0x24,0x25,0xef,0x27, - 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f, - 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37, - 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f, - 0x042e,0x0410,0x0411,0x0426,0x0414,0x0415,0x0424,0x0413, - 0x0425,0x0418,0x0419,0x041a,0x041b,0x041c,0x041d,0x041e, - 0x041f,0x042f,0x0420,0x0421,0x0422,0x0423,0x0416,0x0412, - 0x042c,0x49,0x0417,0x0428,0x042d,0x0429,0x0427,0xcf, - 0x044e,0x0430,0x0431,0x0446,0x0434,0x0435,0x0444,0x0433, - 0x0445,0x0438,0x0439,0x043a,0x043b,0x043c,0x043d,0x043e, - 0x043f,0x044f,0x0440,0x0441,0x0442,0x0443,0x0436,0x0432, - 0x044c,0x69,0x0437,0x0448,0x044d,0x0449,0x0447,0xFF - }, - { - //Greek - 0x20,0x21,0x22,0x23,0x24,0x25,0x26,0x27, - 0x28,0x29,0x2a,0x2b,0x2c,0x2d,0x2e,0x2f, - 0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37, - 0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f, - 0x0390,0x0391,0x0392,0x0393,0x0394,0x0395,0x0396,0x0397, - 0x0398,0x0399,0x039a,0x039b,0x039c,0x039d,0x039e,0x039f, - 0x03a0,0x03a1,0x03a2,0x03a3,0x03a4,0x03a5,0x03a6,0x03a7, - 0x03a8,0x03a9,0x03aa,0x03ab,0x03ac,0x03ad,0x03ae,0x03af, - 0x03b0,0x03b1,0x03b2,0x03b3,0x03b4,0x03b5,0x03b6,0x03b7, - 0x03b8,0x03b9,0x03ba,0x03bb,0x03bc,0x03bd,0x03be,0x03bf, - 0x03c0,0x03c1,0x03c2,0x03c3,0x03c4,0x03c5,0x03c6,0x03c7, - 0x03c8,0x03c9,0x03ca,0x03cb,0x03cc,0x03cd,0x03ce,0x03cf - } -}; - -/** - * Latin National Option Sub-Sets - * see Table 36 of ETS specification for details. - * - * 00: £ $ @ « ½ » ¬ # ­ ¼ ¦ ¾ ÷ English - * 01: é ï à ë ê ù î # è â ô û ç French - * 02: # ¤ É Ä Ö Å Ü _ é ä ö å ü Swedish/Finnish/Hungarian - * 03: # ů č ť ž ý í ř é á ě ú š Czech/Slovak - * 04: # $ § Ä Ö Ü ^ _ ° ä ö ü ß German - * 05: ç $ ¡ á é í ó ú ¿ ü ñ è à Portuguese/Spanish - * 06: £ $ é ° ç » ¬ # ù à ò è ì Italian - * - */ -static const unsigned int latin_subchars[8][13]={ - // English - {0xa3,0x24,0x40,0xab,0xbd,0xbb,0xac,0x23,0xad,0xbc,0xa6,0xbe,0xf7}, - // French - {0xe9,0xef,0xe0,0xeb,0xea,0xf9,0xee,0x23,0xe8,0xe2,0xf4,0xfb,0xe7}, - // Swedish/Finnish/Hungarian - {0x23,0xa4,0xc9,0xc4,0xd6,0xc5,0xdc,0x5f,0xe9,0xe4,0xf6,0xe5,0xfc}, - // Czech/Slovak - {0x23,0x16f,0x10d,0x165,0x17e,0xfd,0xed,0x159,0xe9,0xe1,0x11b,0xfa,0x161}, - // German - {0x23,0x24,0xa7,0xc4,0xd6,0xdc,0x5e,0x5f,0xb0,0xe4,0xf6,0xfc,0xdf}, - // Portuguese/Spanish - {0xe7,0x24,0xa1,0xe1,0xe9,0xed,0xf3,0xfa,0xbf,0xfc,0xf1,0xe8,0xe0}, - // Italian - {0xa3,0x24,0xe9,0xb0,0xe7,0xbb,0xac,0x23,0xf9,0xe0,0xf2,0xe8,0xec}, - // Reserved - {0x23,0x24,0x40,0x5b,0x5c,0x5d,0x5e,0x5f,0x60,0x7b,0x7c,0x7d,0x7e} -}; - -/** - * List of supported languages. - * - * lang_code bits for primary Language: - * bits 7-4 corresponds to bits 14-11 of 28 packet's first triplet - * bits 3-1 corresponds to bits C12-C14 of packet 0 (lang) - * - * lang_code bits for secondary Language: - * bits 7-5 corresponds to bits 3-1 of 28 packet's second triplet - * bits 4,2 corresponds to bits 18,16 of 28 packet's first triplet - * bits 3,1 corresponds to bits 15,17 of 28 packet's first triplet - * - * For details see Tables 32 and 33 of specification (subclause 15.2) - */ -struct { - unsigned char lang_code; - unsigned char charset; - const char* lang_name; -} const tt_languages[]= -{ - { 0x01, LATIN, "French"}, - { 0x02, LATIN, "Swedish/Finnish/Hungarian"}, - { 0x03, LATIN, "Czech/Slovak"}, - { 0x04, LATIN, "German"}, - { 0x05, LATIN, "Portuguese/Spanish"}, - { 0x06, LATIN, "Italian"}, - - { 0x08, LATIN, "Polish"}, - { 0x09, LATIN, "French"}, - { 0x0a, LATIN, "Swedish/Finnish/Hungarian"}, - { 0x0b, LATIN, "Czech/Slovak"}, - { 0x0c, LATIN, "German"}, - { 0x0e, LATIN, "Italian"}, - - { 0x10, LATIN, "English"}, - { 0x11, LATIN, "French"}, - { 0x12, LATIN, "Swedish/Finnish/Hungarian"}, - { 0x13, LATIN, "Turkish"}, - { 0x14, LATIN, "German"}, - { 0x15, LATIN, "Portuguese/Spanish"}, - { 0x16, LATIN, "Italian"}, - - { 0x1d, LATIN, "Serbian/Croatian/Slovenian (Latin)"}, - - { 0x20, CYRILLIC1, "Serbian/Croatian (Cyrillic)"}, - { 0x21, CYRILLIC2, "Russian, Bulgarian"}, - { 0x22, LATIN, "Estonian"}, - { 0x23, LATIN, "Czech/Slovak"}, - { 0x24, LATIN, "German"}, - { 0x25, CYRILLIC3, "Ukrainian"}, - { 0x26, LATIN, "Lettish/Lithuanian"}, - - { 0x33, LATIN, "Turkish"}, - { 0x37, GREEK, "Greek"}, - - { 0x40, LATIN, "English"}, - { 0x41, LATIN, "French"}, -// { 0x47, ARABIC, "Arabic"}, - -// { 0x55, HEBREW, "Hebrew"}, -// { 0x57, ARABIC, "Arabic"}, - - { 0x00, LATIN, "English"}, -}; - -/** - * \brief 24/18 Hamming code decoding - * \param data bytes with hamming code (array must be at least 3 bytes long) - * \return -1 if multiple bit error occured, D1-DI data bits - otherwise - * - * \note Bits must be correctly ordered, that is for 24/18 (lowest bit first) - * P1 P2 D1 P3 D2 D3 D4 P4 D5 D6 D7 D8 D9 DA DB P5 DC DD DE DF DG DH DI P6 - */ -static int corrHamm24(unsigned char *data){ - unsigned char syndrom=0; - int cw=data[0] | (data[1]<<8) | (data[2]<<16); - int i; - - for(i=0;i<23;i++) - syndrom^=((cw>>i)&1)*(i+33); - - syndrom^=(cw>>11)&32; - - if(syndrom&31){ - if(syndrom < 32 || syndrom > 55) - return -1; - cw ^= 1<<((syndrom&31)-1); - } - - return (cw&4)>>2 | - (cw&0x70)>>3 | - (cw&0x3f00)>>4 | - (cw&0x3f0000)>>5; -} - -/** - * \brief converts language bits to charset index - * \param lang language bits - * \return charset index in lang_chars array - */ -static int lang2charset (int lang){ - int i; - for(i=0;tt_languages[i].lang_code;i++) - if(tt_languages[i].lang_code==lang) - break; - - return tt_languages[i].charset; -} - -/** - * \brief convert chars from curent teletext codepage into MPlayer charset - * \param p raw teletext char to decode - * \param charset index on lang_chars - * \param lang index in substitution array (latin charset only) - * \return UTF8 char - * - * \remarks - * routine will analyze raw member of given tt_char structure and - * fill unicode member of the same struct with appropriate utf8 code. - */ -static unsigned int conv2uni(unsigned int p,int charset,int lang) -{ - - if(p<0x80 && p>=0x20){ - if(charset==LATIN){ - lang&=7; - if (p>=0x23 && p<=0x24){ - return latin_subchars[lang][p-0x23]; - }else if (p==0x40){ - return latin_subchars[lang][2]; - }else if (p>=0x5b && p<=0x60){ - return latin_subchars[lang][p-0x5b+3]; - }else if (p>=0x7b && p<=0x7e){ - return latin_subchars[lang][p-0x7b+9]; - } - } - return lang_chars[charset][p-0x20]; - }else - return 0x20; -} - -static void init_vbi_consts(priv_vbi_t* priv){ - int i,j; - double ang; - for(i=0; i<256; i++){ - j=i&0x7F; - j^= j+j; - j^= j<<2; - j^= j<<4; - fixParity[i]= i ^ (j&0x80) ^ 0x80; - } - - for(i=0,ang=0; i<12; i++,ang+=M_PI/priv->bpb){ - si[i]= sin(ang); - co[i]= cos(ang); - } - - priv->bpb=(priv->ptsp->sampling_rate/6937500.0)*ONE_FIXP+0.5; - priv->soc=FFMAX(9.2e-6*priv->ptsp->sampling_rate-priv->ptsp->offset, 0); - priv->eoc=FFMIN(12.9e-6*priv->ptsp->sampling_rate-priv->ptsp->offset, - priv->ptsp->samples_per_line-43*8*priv->bpb/ONE_FIXP); - if (priv->eoc - priv->soc<16*priv->bpb/ONE_FIXP){ // invalid [soc:eoc] - priv->soc=0; - priv->eoc=92; - } - priv->bp8bl=0.97*8*priv->bpb/ONE_FIXP; // -3% tolerance - priv->bp8bh=1.03*8*priv->bpb/ONE_FIXP; // +3% tolerance -} -/** - * \brief calculate increased/decreased by given value page number - * \param curr current page number in hexadecimal for - * \param direction decimal value (can be negative) to add to value - * of curr parameter - * \return new page number in hexadecimal form - * - * VBI page numbers are represented in special hexadecimal form, e.g. - * page with number 123 (as seen by user) internally has number 0x123. - * and equation 0x123+8 should be equal to 0x131 instead of regular 0x12b. - * - * - * Page numbers 0xYYY (where Y is not belongs to (0..9). - * Page number belongs to [0x000,0x799] or [0x100:0x899] (first 0 can be - * treated as '8') - */ -static int steppage(int p, int direction, int skip_hidden) -{ - if(skip_hidden) - p=(p&15)+((p>>4)&15)*10+(p>>8)*100; - p+=direction; - if(skip_hidden){ - p=(p+800)%800; - p=(p%10)+((p/10)%10)*16+(p/100)*256; - } - - return p&0x7ff; -} - -/* ------------------------------------------------------------------- - Cache stuff ------------------------------------------------------------------- -*/ - -/** - * \brief add/update entry in cache - * \param priv private data structure - * \param pg page to store in cache - * \param line line to update (value below 0 means update entire page) - */ -static void put_to_cache(priv_vbi_t* priv,tt_page* pg,int line){ - tt_page* pgc; //page in cache - int i,j,count; - - if(line<0){ - i=0; - count=VBI_ROWS*VBI_COLUMNS; - }else if(linebuffer_mutex)); - - if(!priv->ptt_cache[pg->pagenum]){ - priv->ptt_cache[pg->pagenum]=calloc(1,sizeof(tt_page)); - pgc=priv->ptt_cache[pg->pagenum]; - }else{ - pgc=priv->ptt_cache[pg->pagenum]; - while(pgc->next_subpage && pgc->subpagenum!=pg->subpagenum) - pgc=pgc->next_subpage; - - if(pgc->subpagenum!=pg->subpagenum){ - pgc->next_subpage=calloc(1,sizeof(tt_page)); - pgc=pgc->next_subpage; - } - } - pgc->pagenum=pg->pagenum; - pgc->subpagenum=pg->subpagenum; - pgc->primary_lang=pg->primary_lang; - pgc->secondary_lang=pg->secondary_lang; - pgc->flags=pg->flags; - for(j=0;j<6;++j) - pgc->links[j]=pg->links[j]; - //instead of copying entire page into cache, copy only undamaged - //symbols into cache - for(;iraw[i]&0x80)) - pgc->raw[i]=pg->raw[i]; - else - mp_msg(MSGT_TV,MSGL_DBG3,"char error. pg:%x, c[%d]=0x%x\n", - pg->pagenum,i,pg->raw[i]); - } - pgc->active=1; - pthread_mutex_unlock(&(priv->buffer_mutex)); -} - -/** - * \brief get any subpage number of given page - * \param priv private data structure - * \param pagenum page number to search subpages in - * - * \return subpage number of first found subpage which belongs to - * given page number - * - * \note page itself is subpage too (and usually has subpage number 0) - */ -static inline int get_subpagenum_from_cache(priv_vbi_t* priv, int pagenum){ - if (!priv->ptt_cache[pagenum]) - return 0x3f7f; - else - return priv->ptt_cache[pagenum]->subpagenum; -} - -/** - * \brief get page from cache by it page and subpage number - * \param priv private data structure - * \param pagenum page number - * \param subpagenum subpage number - * - * \return pointer to tt_page structure if requested page is found - * and NULL otherwise - */ -static inline tt_page* get_from_cache(priv_vbi_t* priv, int pagenum,int subpagenum){ - tt_page* tp=priv->ptt_cache[pagenum]; - - while(tp && tp->subpagenum!=subpagenum) - tp=tp->next_subpage; - return tp; -} - -/** - * \brief clears cache - * \param priv private data structure - * - * Deletes all tt_page structures from cache and frees allocated memory. - * Only zero-filled array of pointers remains in memory - */ -static void clear_cache(priv_vbi_t* priv){ - int i; - tt_page* tp; - - /* - Skip next 5 buffers to avoid mixing teletext pages from different - channels during channel switch - */ - priv->cache_reset=5; - for(i=0;iptt_cache[i]){ - tp=priv->ptt_cache[i]; - priv->ptt_cache[i]=tp->next_subpage; - free(tp); - } - } - priv->initialsubpage=priv->networkid=0; - priv->timeoffset=0; - priv->juliandate=priv->universaltime=0; - memset(priv->networkname,0,21); -} - -/** - * \brief cache initialization - * \param priv private data structure - * - * \note Has to be called before any cache operations! - */ -static void init_cache(priv_vbi_t* priv){ - priv->ptt_cache=calloc(VBI_MAX_PAGES,sizeof(tt_page*)); -} - -/** - * \brief destroys cache - * \param priv private data structure - * - * Frees all memory allocated for cache (including array of pointers). - * It is safe to call this routine multiple times - */ -static void destroy_cache(priv_vbi_t* priv){ - if(priv->ptt_cache){ - clear_cache(priv); - free(priv->ptt_cache); - priv->ptt_cache=NULL; - } -} - -/* ------------------------------------------------------------------- - Decoder stuff ------------------------------------------------------------------- -*/ -/** - * \brief converts raw teletext page into useful format (1st rendering stage) - * \param pg page to decode - * \param raw raw data to decode page from - * \param primary_lang primary language code - * \param secondary_lang secondary language code -* - * Routine fills tt_char structure of each teletext_page character with proper - * info about foreground and background colors, character - * type (graphics/control/text). - */ -static void decode_page(tt_char* p,unsigned char* raw,int primary_lang,int secondary_lang,int flags) -{ - int row,col; - int prim_charset=lang2charset(primary_lang); - int sec_charset=lang2charset(secondary_lang); - - for(row=0;row=0x08 && c<=0x09){//Flash/Steady - flash=c==0x08; - p[i].flh=flash; - if(c==0x09){ - p[i].fg=fg_color; - p[i].bg=bg_color; - } - }else if(c>=0x0a && c<=0x0b){ - box=c&1; - }else if(c>=0x0c && c<=0x0f){ - }else if (c<=0x17){ //colors - fg_color=c&0x0f; - gfx=c>>4; - conceal=0; - if(!gfx) hold=0; - }else if (c<=0x18){ - conceal=1; - }else if (c<=0x1a){ //Contiguous/Separated gfx - separated=!(c&1); - }else if (c<=0x1b){ - prim_lang=!prim_lang; - }else if (c<=0x1d){ - bg_color=(c&1)?fg_color:0; - p[i].bg=bg_color; - }else{ //Hold/Release Graphics - hold=!(c&1); - } - p[i].ctl=1; - if(hold || c==0x1f){ - p[i]=tt_held; - p[i].fg=fg_color; - p[i].bg=bg_color; - }else - p[i].unicode=p[i].gfx?0:' '; - continue; - } - - if(conceal){ - p[i].gfx=0; - p[i].unicode=' '; - }else if(gfx){ - p[i].unicode=c-0x20; - if (p[i].unicode>0x3f) p[i].unicode-=0x20; - tt_held=p[i]; - }else{ - if(p[i].lng){ - p[i].unicode=conv2uni(c,prim_charset,primary_lang&7); - }else{ - p[i].unicode=conv2uni(c,sec_charset,secondary_lang&7); - } - } - p[i].fg=fg_color; - p[i].bg=bg_color; - } - } -} - -/** - * \brief prepares current page for displaying - * \param priv_vbi private data structure - * - * Routine adds some useful info (time and page number of page, grabbed by - * background thread to top line of current page). Displays "No teletext" - * string if no vbi data available. - */ -#define PRINT_HEX(dp,i,h) dp[i].unicode=((h)&0xf)>9?'A'+((h)&0xf)-10:'0'+((h)&0xf) -static void prepare_visible_page(priv_vbi_t* priv){ - tt_page *pg,*curr_pg; - unsigned char *p; - int i; - - pthread_mutex_lock(&(priv->buffer_mutex)); - mp_msg(MSGT_TV,MSGL_DBG3,"tvi_vbi: prepare_visible_page pg:0x%x, sub:0x%x\n", - priv->pagenum,priv->subpagenum); - if(priv->subpagenum==0x3f7f) //no page yet - priv->subpagenum=get_subpagenum_from_cache(priv,priv->pagenum); - - pg=get_from_cache(priv,priv->pagenum,priv->subpagenum); - mp_dbg(MSGT_TV,MSGL_DBG3,"tvi_vbi: prepare_vibible_page2 pg:0x%x, sub:0x%x\n", - priv->pagenum,priv->subpagenum); - - curr_pg=get_from_cache(priv,priv->curr_pagenum, - get_subpagenum_from_cache(priv,priv->curr_pagenum)); - if (!pg && !curr_pg){ - p=MSGTR_TV_NoTeletext; - for(i=0;idisplay_page[i].unicode,*p++,break;); - } - for(;idisplay_page[i]=tt_space; - pthread_mutex_unlock(&(priv->buffer_mutex)); - return; - } - - if (!pg || !pg->active){ - for(i=0;idisplay_page[i]=tt_space; - } - }else{ - decode_page(priv->display_page,pg->raw,pg->primary_lang,pg->secondary_lang,pg->flags); - mp_msg(MSGT_TV,MSGL_DBG3,"page #%x was decoded!\n",pg->pagenum); - } - - PRINT_HEX(priv->display_page,0,(priv->curr_pagenum&0x700)?priv->curr_pagenum>>8:8); - PRINT_HEX(priv->display_page,1,priv->curr_pagenum>>4); - PRINT_HEX(priv->display_page,2,priv->curr_pagenum); - priv->display_page[3].unicode=' '; - priv->display_page[4].unicode=' '; - switch(priv->pagenumdec>>12){ - case 1: - priv->display_page[5].unicode='_'; - priv->display_page[6].unicode='_'; - PRINT_HEX(priv->display_page,7,priv->pagenumdec); - break; - case 2: - priv->display_page[5].unicode='_'; - PRINT_HEX(priv->display_page,6,priv->pagenumdec>>4); - PRINT_HEX(priv->display_page,7,priv->pagenumdec); - break; - default: - PRINT_HEX(priv->display_page,5,(priv->pagenum&0x700)?priv->pagenum>>8:8); - PRINT_HEX(priv->display_page,6,priv->pagenum>>4); - PRINT_HEX(priv->display_page,7,priv->pagenum); - } - if(priv->subpagenum!=0x3f7f){ - priv->display_page[8].unicode='.'; - PRINT_HEX(priv->display_page,9,priv->subpagenum>>4); - PRINT_HEX(priv->display_page,10,priv->subpagenum); - }else{ - priv->display_page[8].unicode=' '; - priv->display_page[9].unicode=' '; - priv->display_page[10].unicode=' '; - } - priv->display_page[11].unicode=' '; - for(i=VBI_COLUMNS;i>VBI_TIME_LINEPOS || - ((curr_pg->raw[i]&0x60) && curr_pg->raw[i]!=0x20 && i>11); - --i) - if(curr_pg->raw[i]&0x60) - priv->display_page[i].unicode=curr_pg->raw[i]; - else - priv->display_page[i].unicode=' '; - pthread_mutex_unlock(&(priv->buffer_mutex)); -} -/* ------------------------------------------------------------------- - Renderer stuff ------------------------------------------------------------------- -*/ -#ifdef DEBUG_DUMP -/** - * \brief renders teletext page into given file - * \param pt page to render - * \param f opened file descriptor - * \param pagenum which page to render - * \param colored use colors not implemented yet) - * - * Text will be UTF8 encoded - */ -static void render2text(tt_page* pt,FILE* f,int colored){ - int i,j; - unsigned int u; - unsigned char buf[8]; - unsigned char tmp; - int pos; - tt_char dp[VBI_ROWS*VBI_COLUMNS]; - int color=0; - int bkg=0; - int c1,b1; - if(!pt) - return; - fprintf(f,"+========================================+\n"); - fprintf(f,"| lang:%d pagenum:0x%x subpagenum:%d flags:0x%x|\n", - pt->lang, - pt->pagenum, - pt->subpagenum, - 0); - fprintf(f,"+----------------------------------------+\n"); - - decode_page(dp,pt->raw,pt->primary_lang,pt->secondary_lang,pt->flags); - for(i=0;ipagenum); - f=fopen(name,"wb"); - render2text(pt,f,1); - fclose(f); -} -#endif //DEBUG_DUMP - - -/** - * \brief checks whether page is ready and copies it into cache array if so - * \param priv private data structure - * \param magAddr page's magazine address (0-7) - * - * Routine also calls decode_page to perform 1st stage of rendering - */ -static void store_in_cache(priv_vbi_t* priv, int magAddr, int line){ - mp_msg(MSGT_TV,MSGL_DBG2,"store_in_cache(%d): pagenum:%x\n", - priv->mag[magAddr].order, - priv->mag[magAddr].pt->pagenum); - - put_to_cache(priv,priv->mag[magAddr].pt,line); - priv->curr_pagenum=priv->mag[magAddr].pt->pagenum; - -#ifdef DEBUG_DUMP - dump_page(get_from_cache(priv, - priv->mag[magAddr].pt->pagenum, - priv->mag[magAddr].pt->subpagenum)); -#endif -} - - -/* ------------------------------------------------------------------- - Grabber stuff ------------------------------------------------------------------- -*/ -#define PLL_SAMPLES 4 -#define PLL_ERROR 4 -#define PLL_ADJUST 4 - -/** - * \brief adjust current phase for better signal decoding - * \param n count of bytes processed (?) - * \param err count of error bytes (?) - * - * \remarks code was got from MythTV project - */ -static void pll_add(priv_vbi_t* priv,int n,int err){ - if(priv->pll_fixed) - return; - if(err>PLL_ERROR*2/3) - err=PLL_ERROR*2/3; - priv->pll_err+=err; - priv->pll_cnt+=n; - if(priv->pll_cntpll_err>PLL_ERROR) - { - if(priv->pll_err>priv->pll_lerr) - priv->pll_dir= -priv->pll_dir; - priv->pll_lerr=priv->pll_err; - priv->pll_adj+=priv->pll_dir; - if (priv->pll_adj<-PLL_ADJUST || priv->pll_adj>PLL_ADJUST) - { - priv->pll_adj=0; - priv->pll_dir=-1; - priv->pll_lerr=0; - } - mp_msg(MSGT_TV,MSGL_DBG3,"vbi: pll_adj=%2d\n",priv->pll_adj); - } - priv->pll_cnt=0; - priv->pll_err=0; -} - -/** - * \brief reset error correction - * \param priv private data structure - * \param fine_tune shift value for adjusting - * - * \remarks code was got from MythTV project - */ -static void pll_reset(priv_vbi_t* priv,int fine_tune){ - priv->pll_fixed=fine_tune >= -PLL_ADJUST && fine_tune <= PLL_ADJUST; - - priv->pll_err=0; - priv->pll_lerr=0; - priv->pll_cnt=0; - priv->pll_dir=-1; - priv->pll_adj=0; - if(priv->pll_fixed) - priv->pll_adj=fine_tune; - if(priv->pll_fixed) - mp_msg(MSGT_TV,MSGL_DBG3,"pll_reset (fixed@%2d)\n",priv->pll_adj); - else - mp_msg(MSGT_TV,MSGL_DBG3,"pll_reset (auto)\n"); - -} -/** - * \brief decode packet 0 (teletext page header) - * \param priv private data structure - * \param data raw teletext data (with not applied hamm correction yet) - * \param magAddr teletext page's magazine address - * - * \remarks - * data buffer was shifted by 6 and now contains: - * 0..1 page number - * 2..5 sub-code - * 6..7 control codes - * 8..39 display data - * - * only first 8 bytes protected by Hamm 8/4 code - */ -static int decode_pkt0(priv_vbi_t* priv,unsigned char* data,int magAddr) -{ - int d[8]; - int i,err; - - if (magAddr<0 || magAddr>7) - return 0; - for(i=0;i<8;i++){ - d[i]= corrHamm48[ data[i] ]; - if(d[i]&0x80){ - pll_add(priv,2,4); - - if(priv->mag[magAddr].pt) - free(priv->mag[magAddr].pt); - priv->mag[magAddr].pt=NULL; - priv->mag[magAddr].order=0; - return 0; - } - } - if (!priv->mag[magAddr].pt) - priv->mag[magAddr].pt= malloc(sizeof(tt_page)); - - if(priv->primary_language) - priv->mag[magAddr].pt->primary_lang=priv->primary_language; - else - priv->mag[magAddr].pt->primary_lang= (d[7]>>1)&7; - priv->mag[magAddr].pt->secondary_lang=priv->secondary_language; - priv->mag[magAddr].pt->subpagenum=(d[2]|(d[3]<<4)|(d[4]<<8)|(d[5]<<12))&0x3f7f; - priv->mag[magAddr].pt->pagenum=(magAddr<<8) | d[0] | (d[1]<<4); - priv->mag[magAddr].pt->flags=((d[7]&1)<<7) | ((d[3]&8)<<3) | ((d[5]&12)<<2) | d[6]; - - memset(priv->mag[magAddr].pt->raw, 0x00, VBI_COLUMNS*VBI_ROWS); - priv->mag[magAddr].order=0; - - for(i=0;i<8;i++){ - priv->mag[magAddr].pt->raw[i]=0x20; - } - err=0; - for(i=8; imag[magAddr].pt->raw[i]=data[i]; - if(data[i]&0x80) //Error - err++; - pll_add(priv,1,err); - } - - store_in_cache(priv,magAddr,0); - - return 1; -} - -/** - * \brief decode teletext 8/30 Format 1 packet - * \param priv private data structure - * \param data raw teletext data (with not applied hamm correction yet) - * \param magAddr teletext page's magazine address - * - * \remarks - * packet contains: - * 0 designation code - * 1..2 initial page - * 3..6 initial subpage & magazine address - * 7..8 network id - * 9 time offset - * 10..12 julian date - * 13..15 universal time - * 20..40 network name - * - * First 7 bytes are protected by Hamm 8/4 code. - * Bytes 20-40 has odd parity check. - * - * See subcaluse 9.8.1 of specification for details - */ -static int decode_pkt30(priv_vbi_t* priv,unsigned char* data,int magAddr) -{ - int d[8]; - int i,err; - - for(i=0;i<7;i++){ - d[i]= corrHamm48[ data[i] ]; - if(d[i]&0x80){ - pll_add(priv,2,4); - return 0; - } - d[i]&=0xf; - } - - err=0; - for(i=20; i<40; i++){ - data[i]= fixParity[data[i]]; - if(data[i]&0x80)//Unrecoverable error - err++; - pll_add(priv,1,err); - } - if (err) return 0; - - if (d[0]&0xe) //This is not 8/30 Format 1 packet - return 1; - - priv->initialpage=d[1] | d[2]<<4 | (d[6]&0xc)<<7 | (d[4]&1)<<8; - priv->initialsubpage=d[3] | d[4]<<4 | d[5]<<8 | d[6]<<12; - priv->networkid=data[7]<<8 | data[8]; - - priv->timeoffset=(data[9]>>1)&0xf; - if(data[9]&0x40) - priv->timeoffset=-priv->timeoffset; - - priv->juliandate=(data[10]&0xf)<<16 | data[11]<<8 | data[12]; - priv->juliandate-=0x11111; - - priv->universaltime=data[13]<<16 | data[14]<<8 | data[15]; - priv->universaltime-=0x111111; - - snprintf(priv->networkname,21,"%s",data+20); - - return 1; -} - -/** - * \brief decode packets 1..24 (teletext page header) - * \param priv private data structure - * \param data raw teletext data - * \param magAddr teletext page's magazine address - * \param rowAddr teletext page's row number - * - * \remarks - * data buffer was shifted by 6 and now contains 40 bytes of display data: - * this type of packet is not proptected by Hamm 8/4 code - */ -static void decode_pkt_page(priv_vbi_t* priv,unsigned char*data,int magAddr,int rowAddr){ - int i,err; - if (!priv->mag[magAddr].pt) - return; - - priv->mag[magAddr].order=rowAddr; - - err=0; - for(i=0; imag[magAddr].pt->raw[i+rowAddr*VBI_COLUMNS]=data[i]; - if( data[i]&0x80) //HammError - err++; - } - pll_add(priv,1,err); - - store_in_cache(priv,magAddr,rowAddr); -} - -/** - * \brief decode packets 27 (teletext links) - * \param priv private data structure - * \param data raw teletext data - * \param magAddr teletext page's magazine address - */ -static int decode_pkt27(priv_vbi_t* priv,unsigned char* data,int magAddr){ - int i,hpg; - - if (!priv->mag[magAddr].pt) - return 0; - for(i=0;i<38;++i) - if ((data[i] = corrHamm48[ data[i] ]) & 0x80){ - pll_add(priv,2,4); - return 0; - } - - /* - Not a X/27/0 Format 1 packet or - flag "show links on row 24" is not set. - */ - if (data[0] || !(data[37] & 8)) - return 1; - for(i=0;i<6;++i) { - hpg = (magAddr<<8) ^ ((data[4+i*6]&0x8)<<5 | (data[6+i*6]&0xc)<<7); - if (!hpg) hpg=0x800; - priv->mag[magAddr].pt->links[i].pagenum = (data[1+i*6] & 0xf) | - ((data[2+i*6] & 0xf) << 4) | hpg; - priv->mag[magAddr].pt->links[i].subpagenum = ((data[3+i*6] & 0xf) | - (data[4+i*6] & 0xf) << 4 | (data[5+i*6] & 0xf) << 8 | - (data[6+i*6] & 0xf) << 12) & 0x3f7f; - } - put_to_cache(priv,priv->mag[magAddr].pt,-1); - return 1; -} - -/** - * \brief Decode teletext X/28/0 Format 1 packet - * \param priv private data structure - * \param data raw teletext data - * - * Primary G0 charset is transmitted in bits 14-8 of Triplet 1 - * See Table 32 of specification for details. - * - * Secondary G0 charset is transmitted in bits 3-1 of Triplet 2 and - * bits 18-15 of Triplet 1 - * See Table 33 of specification for details. - * - */ -static void decode_pkt28(priv_vbi_t* priv,unsigned char*data){ - int d; - int t1,t2; - d=corrHamm48[ data[0] ]; - if(d) return; //this is not X/28/0 Format 1 packet or error occured - - t1=corrHamm24(data+1); - t2=corrHamm24(data+4); - if (t1<0 || t2<0){ - pll_add(priv,1,4); - return; - } - - priv->primary_language=(t1>>7)&0x7f; - priv->secondary_language=((t2<<4) | (t1>>14))&0x7f; - if (priv->secondary_language==0x7f) - //No secondary language required - priv->secondary_language=priv->primary_language; - else // Swapping bits 1 and 3 - priv->secondary_language=(priv->secondary_language&0x7a) | - (priv->secondary_language&4)>>2 | - (priv->secondary_language&1)<<2; - - mp_msg(MSGT_TV,MSGL_DBG2,"pkt28: language: primary=%02x secondary=0x%02x\n", - priv->primary_language,priv->secondary_language); -} - -/** - * \brief decodes raw vbi data (signal amplitudes) into sequence of bytes - * \param priv private data structure - * \param buf raw vbi data (one line of frame) - * \param data output buffer for decoded bytes (at least 45 bytes long) - * - * Used XawTV's algorithm. Signal phase is calculated with help of starting clock - * run-in sequence (min/max values and bit distance values are calculated) - */ -static int decode_raw_line_runin(priv_vbi_t* priv,unsigned char* buf,unsigned char* data){ - const int magic= 0x27; // reversed 1110010 - int dt[256],hi[6],lo[6]; - int i,x,r; - int decoded; - int sync; - unsigned char min,max; - int thr=0; //threshold - - //stubs - int soc=priv->soc; - int eoc=priv->eoc; - - for(i=soc;ibpb/ONE_FIXP]-buf[i]; // amplifies the edges best. - /* set barrier */ - for (i=eoc; i-32) - i++; - lo[x]=i; - } - if (i>=eoc) - { - return 0; // not enough periods found - } - i=hi[5]-hi[1]; // length of 4 periods (8 bits) - if (ibp8bl || i>priv->bp8bh) - { - mp_msg(MSGT_TV,MSGL_DBG3,"vbi: wrong freq %d (%d,%d)\n", - i,priv->bp8bl,priv->bp8bh); - return 0; // bad frequency - } - /* AGC and sync-reference */ - min=255, max=0, sync=0; - for (i=hi[4]; imax) - max=buf[i], sync=i; - for (i=lo[4]; ipll_adj*priv->bpb/10;i<16*priv->bpb;i+=priv->bpb) - if(buf[FIXP2INT(i)]>thr && buf[FIXP2INT(i+priv->bpb)]>thr) - break; - r=0; - for(decoded=1; decoded<= (VBI_COLUMNS+3)<<3;decoded++){ - r>>=1; - if(buf[FIXP2INT(i)]>thr) r|=0x80; - if(!(decoded & 0x07)){ - data[(decoded>>3) - 1]=r; - r=0; - } - i+=priv->bpb; - } - if(data[0]!=magic) - return 0; //magic not found - - //stub - for(i=0;i<43;i++){ - data[i]=data[i+1]; - } - mp_msg(MSGT_TV,MSGL_DBG3,"thr:%d sync:%d ",thr,sync); - - return 1; -} - -#if 0 -//See comment in vbi_decode for a reason of commenting out this routine. - -/** - * \brief decodes raw vbi data (signal amplitudes) into sequence of bytes - * \param priv private data structure - * \param buf raw vbi data (one line of frame) - * \param data output buffer for decoded bytes (at least 45 bytes long) - * - * Used Michael Niedermayer's algorithm. - * Signal phase is calculated using correlation between given samples data and - * pure sine - */ -static int decode_raw_line_sine(priv_vbi_t* priv,unsigned char* buf,unsigned char* data){ - int i,x,r,amp,xFixp; - int avg=0; - double sin_sum=0, cos_sum=0; - - for(x=0; x< FIXP2INT(10*priv->bpb); x++) - avg+=buf[x]; - - avg/=FIXP2INT(10*priv->bpb); - - for(x=0; x<12; x++){ - amp= buf[x<<1]; - sin_sum+= si[x]*(amp-avg); - cos_sum+= co[x]*(amp-avg); - } - //this is always zero. Why ? - xFixp= atan(sin_sum/cos_sum)*priv->bpb/M_PI; - - //Without this line the result is full of errors - //and routine is unable to find magic sequence - buf+=FIXP2INT(10*priv->bpb); - - r=0; - for(x=FIXP2INT(xFixp);x<70;x=FIXP2INT(xFixp)){ - r=(r<<1) & 0xFFFF; - if(buf[x]>avg) r|=1; - xFixp+=priv->bpb; - if(r==0xAAE4) break; - } - - //this is not teletext - if (r!=0xaae4) return 0; - - //Decode remaining 45-2(clock run-in)-1(framing code)=42 bytes - for(i=1; i<=(42<<3); i++){ - r>>=1; - x=FIXP2INT(xFixp); - if(buf[x]> avg) - r|=0x80; - - if(!(i & 0x07)){ - data[(i>>3)-1]=r; - r=0; - } - xFixp+=priv->bpb; - } - - return 1; -} -#endif - -/** - * \brief decodes all vbi lines from one video frame - * \param priv private data structure - * \param buf buffer with raw vbi data in it - * - * \note buffer size have to be at least priv->ptsp->bufsize bytes - */ -static void vbi_decode(priv_vbi_t* priv,unsigned char*buf){ - int magAddr; - int pkt; - unsigned char data[64]; - unsigned char* linep; - int d0,d1; - int i=0; - mp_msg(MSGT_TV,MSGL_DBG3,"vbi: vbi_decode\n"); - for(linep=buf; !priv->cache_reset && linepptsp->bufsize; linep+=priv->ptsp->samples_per_line,i++){ -#if 0 - /* - This routine is alternative implementation of raw VBI data decoding. - Unfortunately, it detects only about 20% of incoming data, - but Michael says that this algorithm is better, and he wants to fix it. - */ - if(decode_raw_line_sine(priv,linep,data)<=0){ -#endif - if(decode_raw_line_runin(priv,linep,data)<=0){ - continue; //this is not valid teletext line - } - d0= corrHamm48[ data[0] ]; - d1= corrHamm48[ data[1] ]; - - if(d0&0x80 || d1&0x80){ - pll_add(priv,2,4); - mp_msg(MSGT_TV,MSGL_V,"vbi_decode(%d):HammErr after decode_raw_line\n",i); - - continue; //hamError - } - magAddr=d0 & 0x7; - pkt=(d0>>3)|(d1<<1); - mp_msg(MSGT_TV,MSGL_DBG3,"vbi_decode(%d):%x %x (mag:%x, pkt:%d)\n", - i,d0,d1,magAddr,pkt); - if(!pkt){ - decode_pkt0(priv,data+2,magAddr); //skip MRGA - }else if(pkt>0 && pktmag[magAddr].pt) continue; - decode_pkt_page(priv,data+2,magAddr,pkt);//skip MRGA - }else if(pkt==27) { - decode_pkt27(priv,data+2,magAddr); - }else if(pkt==28){ - decode_pkt28(priv,data+2); - }else if(pkt==30){ - decode_pkt30(priv,data+2,magAddr); - } else { - mp_msg(MSGT_TV,MSGL_DBG3,"unsupported packet:%d\n",pkt); - } - } - if (priv->cache_reset){ - pthread_mutex_lock(&(priv->buffer_mutex)); - priv->cache_reset--; - pthread_mutex_unlock(&(priv->buffer_mutex)); - } - -} - -/* ---------------------------------------------------------------------------------- - Public routines ---------------------------------------------------------------------------------- -*/ - -/** - * \brief toggles teletext page displaying format - * \param priv_vbi private data structure - * \param flag new format - * \return - * TVI_CONTROL_TRUE is success, - * TVI_CONTROL_FALSE otherwise - * - * flag: - * 0 - opaque - * 1 - transparent - * 2 - opaque with black foreground color (only in bw mode) - * 3 - transparent with black foreground color (only in bw mode) - */ -static int teletext_set_format(priv_vbi_t * priv, teletext_format flag) -{ - flag&=3; - - mp_msg(MSGT_TV,MSGL_DBG3,"teletext_set_format_is called. mode:%d\n",flag); - pthread_mutex_lock(&(priv->buffer_mutex)); - - priv->tformat=flag; - - priv->pagenumdec=0; - - pthread_mutex_unlock(&(priv->buffer_mutex)); - return TVI_CONTROL_TRUE; -} - -/** - * \brief append just entered digit to editing page number - * \param priv_vbi private data structure - * \param dec decimal digit to append - * - * dec: - * '0'..'9' append digit - * '-' remove last digit (backspace emulation) - * - * This routine allows user to jump to arbitrary page. - * It implements simple page number editing algorithm. - * - * Subsystem can be on one of two modes: normal and page number edit mode. - * Zero value of priv->pagenumdec means normal mode - * Non-zero value means page number edit mode and equals to packed - * decimal number of already entered part of page number. - * - * How this works. - * Let's assume that current mode is normal (pagenumdec is zero), teletext page - * 100 are displayed as usual. topmost left corner of page contains page number. - * Then vbi_add_dec is sequentially called (through slave - * command of course) with 1,4,-,2,3 * values of dec parameter. - * - * +-----+------------+------------------+ - * | dec | pagenumdec | displayed number | - * +-----+------------+------------------+ - * | | 0x000 | 100 | - * +-----+------------+------------------+ - * | 1 | 0x001 | __1 | - * +-----+------------+------------------+ - * | 4 | 0x014 | _14 | - * +-----+------------+------------------+ - * | - | 0x001 | __1 | - * +-----+------------+------------------+ - * | 2 | 0x012 | _12 | - * +-----+------------+------------------+ - * | 3 | 0x123 | 123 | - * +-----+------------+------------------+ - * | | 0x000 | 123 | - * +-----+------------+------------------+ - * - * pagenumdec will automatically receive zero value after third digit of page - * number is entered and current page will be switched to another one with - * entered page number. - */ -static void vbi_add_dec(priv_vbi_t * priv, char *dec) -{ - int count, shift; - if (!dec) - return; - if (!priv->on) - return; - if ((*dec<'0' || *dec>'9') && *dec!='-') - return; - if (!priv->pagenumdec) //first digit cannot be '0','9' or '-' - if(*dec=='-' || *dec=='0' || *dec=='9') - return; - pthread_mutex_lock(&(priv->buffer_mutex)); - count=(priv->pagenumdec>>12)&0xf; - if (*dec=='-') { - count--; - if (count) - priv->pagenumdec=((priv->pagenumdec>>4)&0xfff)|(count<<12); - else - priv->pagenumdec=0; - } else { - shift = count * 4; - count++; - priv->pagenumdec= - (((priv->pagenumdec)<<4|(*dec-'0'))&0xfff)|(count<<12); - if (count==3) { - priv->pagenum=priv->pagenumdec&0x7ff; - priv->subpagenum=get_subpagenum_from_cache(priv,priv->pagenum); - priv->pagenumdec=0; - } - } - pthread_mutex_unlock(&(priv->buffer_mutex)); -} - - -/** - * \brief Teletext control routine - * \param priv_vbi private data structure - * \param cmd command - * \param arg command parameter (has to be not null) - */ -int teletext_control(void* p, int cmd, void *arg) -{ - int fine_tune=99; - priv_vbi_t* priv=(priv_vbi_t*)p; - tt_page* pgc; - - if (!priv && cmd!=TV_VBI_CONTROL_START) - return TVI_CONTROL_FALSE; - if (!arg && cmd!=TV_VBI_CONTROL_STOP && cmd!=TV_VBI_CONTROL_MARK_UNCHANGED) - return TVI_CONTROL_FALSE; - - switch (cmd) { - case TV_VBI_CONTROL_RESET: - { - int i; - tv_param_t* tv_param=arg; - pthread_mutex_lock(&(priv->buffer_mutex)); - priv->pagenumdec=0; - clear_cache(priv); - priv->pagenum=steppage(0,tv_param->tpage&0x7ff,1); - priv->tformat=tv_param->tformat; - priv->subpagenum=0x3f7f; - pll_reset(priv,fine_tune); - if(tv_param->tlang==-1){ - mp_msg(MSGT_TV,MSGL_INFO,MSGTR_TV_TTSupportedLanguages); - for(i=0; tt_languages[i].lang_code; i++){ - mp_msg(MSGT_TV,MSGL_INFO," %3d %s\n", - tt_languages[i].lang_code, tt_languages[i].lang_name); - } - mp_msg(MSGT_TV,MSGL_INFO," %3d %s\n", - tt_languages[i].lang_code, tt_languages[i].lang_name); - }else{ - for(i=0; tt_languages[i].lang_code; i++){ - if(tt_languages[i].lang_code==tv_param->tlang) - break; - } - if (priv->primary_language!=tt_languages[i].lang_code){ - mp_msg(MSGT_TV,MSGL_INFO,MSGTR_TV_TTSelectedLanguage, - tt_languages[i].lang_name); - priv->primary_language=tt_languages[i].lang_code; - } - } - priv->page_changed=1; - pthread_mutex_unlock(&(priv->buffer_mutex)); - return TVI_CONTROL_TRUE; - } - case TV_VBI_CONTROL_START: - { - int i; - tt_stream_props* ptsp=*(tt_stream_props**)arg; - - if(!ptsp) - return TVI_CONTROL_FALSE; - - priv=calloc(1,sizeof(priv_vbi_t)); - - priv->ptsp=malloc(sizeof(tt_stream_props)); - memcpy(priv->ptsp,ptsp,sizeof(tt_stream_props)); - *(priv_vbi_t**)arg=priv; - - priv->subpagenum=0x3f7f; - pthread_mutex_init(&priv->buffer_mutex, NULL); - priv->pagenumdec=0; - for(i=0;idisplay_page[i]=tt_space; - - priv->mag=calloc(8,sizeof(mag_t)); - init_cache(priv); - init_vbi_consts(priv); - pll_reset(priv,fine_tune); - priv->page_changed=1; - return TVI_CONTROL_TRUE; - } - case TV_VBI_CONTROL_STOP: - { - if(priv->mag) - free(priv->mag); - if(priv->ptsp) - free(priv->ptsp); - destroy_cache(priv); - priv->page_changed=1; - free(priv); - return TVI_CONTROL_TRUE; - } - case TV_VBI_CONTROL_SET_MODE: - priv->on=(*(int*)arg%2); - priv->page_changed=1; - return TVI_CONTROL_TRUE; - case TV_VBI_CONTROL_GET_MODE: - *(int*)arg=priv->on; - return TVI_CONTROL_TRUE; - case TV_VBI_CONTROL_SET_FORMAT: - priv->page_changed=1; - return teletext_set_format(priv, *(int *) arg); - case TV_VBI_CONTROL_GET_FORMAT: - pthread_mutex_lock(&(priv->buffer_mutex)); - *(int*)arg=priv->tformat; - pthread_mutex_unlock(&(priv->buffer_mutex)); - return TVI_CONTROL_TRUE; - case TV_VBI_CONTROL_GET_HALF_PAGE: - if(!priv->on) - return TVI_CONTROL_FALSE; - *(int *)arg=priv->zoom; - return TVI_CONTROL_TRUE; - case TV_VBI_CONTROL_SET_HALF_PAGE: - { - int val=*(int*)arg; - val%=3; - if(val<0) - val+=3; - pthread_mutex_lock(&(priv->buffer_mutex)); - priv->zoom=val; - priv->page_changed=1; - pthread_mutex_unlock(&(priv->buffer_mutex)); - return TVI_CONTROL_TRUE; - } - case TV_VBI_CONTROL_GO_LINK: - { - int val=*(int *) arg; - if(val<1 || val>6) - return TVI_CONTROL_FAL