cc708decoder.cpp

Go to the documentation of this file.

// -*- Mode: c++ -*-
// Copyright (c) 2003-2005, Daniel Kristjansson 

#include <cassert>
#include <cstdlib>

#include "mythcontext.h"
#include "cc708decoder.h"

#define LOC QString("CC708: ")
#define LOC_ERR QString("CC708, Error: ")

#define DEBUG_CC_SERVICE       0
#define DEBUG_CC_SERVICE_2     0
#define DEBUG_CC_RAWPACKET     0
#define DEBUG_CC_SERVICE_BLOCK 0

typedef enum
{
    NTSC_CC_f1         = 0,
    NTSC_CC_f2         = 1,
    DTVCC_PACKET_DATA  = 2,
    DTVCC_PACKET_START = 3,
};

const char* cc_types[4] =
{
    "NTSC line 21 field 1 closed captions"
    "NTSC line 21 field 2 closed captions"
    "DTVCC Channel Packet Data"
    "DTVCC Channel Packet Start"
};

static void parse_cc_packet(CC708Reader *cb_cbs, CaptionPacket *pkt);

CC708Reader::CC708Reader()
{
    for (uint i=0; i<64; i++)
    {
        buf_alloc[i] = 512;
        buf[i]       = (unsigned char*) malloc(buf_alloc[i]);
        buf_size[i]  = 0;
        delayed[i]   = 0;

        temp_str_alloc[i] = 512;
        temp_str_size[i]  = 0;
        temp_str[i]       = (short*) malloc(temp_str_alloc[i] * sizeof(short));
    }
}

CC708Reader::~CC708Reader()
{
    for (uint i=0; i<64; i++)
    {
        free(buf[i]);
        free(temp_str[i]);
    }
}

void CC708Decoder::decode_cc_data(uint cc_type, uint data1, uint data2)
{
    if (DTVCC_PACKET_START == cc_type)
    {
        //VERBOSE(VB_IMPORTANT, LOC + QString("CC ST data(0x%1 0x%2)")
        //        .arg(data1,0,16).arg(data2,0,16));

        if (partialPacket.size && reader)
            parse_cc_packet(reader, &partialPacket);

        partialPacket.data[0] = data1;
        partialPacket.data[1] = data2;
        partialPacket.size   = 2;
    }
    else if (DTVCC_PACKET_DATA == cc_type)
    {
        //VERBOSE(VB_IMPORTANT, LOC + QString("CC Ex data(0x%1 0x%2)")
        //        .arg(data1,0,16).arg(data2,0,16));

        partialPacket.data[partialPacket.size + 0] = data1;
        partialPacket.data[partialPacket.size + 1] = data2;
        partialPacket.size += 2;
    }
}

#define DEBUG_CAPTIONS 0

typedef enum
{
    NUL  = 0x00,
    EXT1 = 0x01,
    ETX  = 0x03,
    BS   = 0x08,
    FF   = 0x0C,
    CR   = 0x0D,
    HCR  = 0x0E,
    P16  = 0x18,
} C0;

typedef enum
{
    CW0=0x80, CW1, CW2, CW3, CW4, CW5, CW6, CW7,      
    CLW,      DSW, HDW, TGW, DLW, DLY, DLC, RST,
    SPA=0x90, SPC, SPL,                     SWA=0x97,
    DF0,      DF1, DF2, DF3, DF4, DF5, DF6, DF7,
} C1;

extern ushort CCtableG0[0x60];
extern ushort CCtableG1[0x60];
extern ushort CCtableG2[0x60];
extern ushort CCtableG3[0x60];

static void append_character(CC708Reader *cc, uint service_num, short ch);
static void parse_cc_service_stream(CC708Reader *cc, uint service_num);
static int handle_cc_c0_ext1_p16(CC708Reader *cc, uint service_num, int i);
static int handle_cc_c1(CC708Reader *cc, uint service_num, int i);
static int handle_cc_c2(CC708Reader *cc, uint service_num, int i);
static int handle_cc_c3(CC708Reader *cc, uint service_num, int i);

#define SEND_STR \
do { \
    if (cc->temp_str_size[service_num]) \
    { \
        cc->TextWrite(service_num, \
                      cc->temp_str[service_num], \
                      cc->temp_str_size[service_num]); \
        cc->temp_str_size[service_num] = 0; \
    } \
} while (0)

static void parse_cc_service_stream(CC708Reader* cc, uint service_num)
{
    const int blk_size = cc->buf_size[service_num];
    int blk_start = 0, dlc_loc = 0, rst_loc = 0, i = 0;

    // find last reset or delay cancel in buffer
    for (i = 0; i < blk_size; i++)
    {
        if (RST == cc->buf[service_num][i])
            rst_loc = dlc_loc = i;
        else if (DLC == cc->buf[service_num][i])
            dlc_loc = i;
    }

    // reset, process only data after reset
    if (rst_loc)
    {
        cc->Reset(service_num);
        cc->delayed[service_num] = 0; // Reset implicitly cancels delay
        blk_start = rst_loc + 1;
    }

    // if we have a delay cancel, cancel any delay
    if (dlc_loc && cc->delayed[service_num])
    {
        cc->DelayCancel(service_num);
        cc->delayed[service_num] = 0;
    }

    // cancel delay if the buffer is full
    if (cc->delayed[service_num] && blk_size >= 126)
    {
        cc->DelayCancel(service_num);
        cc->delayed[service_num] = 0;
        dlc_loc = blk_size - 1;
    }

/*
  av_log(NULL, AV_LOG_ERROR,
  "cc_ss delayed(%i) blk_start(%i) blk_size(%i)\n",
  cc->delayed, blk_start, blk_size);
*/

    for (int i = (cc->delayed[service_num]) ? blk_size : blk_start;
         i < blk_size; )
    {
        const int old_i = i;
        const int code = cc->buf[service_num][i];
        if (0x0 == code)
        { 
            i++; 
        }
        else if (code <= 0x1f)
        {
            // C0 code -- ASCII commands + ext1: C2,C3,G2,G3 + p16: 16 chars
            i = handle_cc_c0_ext1_p16(cc, service_num, i);
        }
        else if (code <= 0x7f)
        {
            // G0 code -- mostly ASCII printables
            short character = CCtableG0[code-0x20];
            append_character(cc, service_num, character);
            i++;
        }
        else if (code <= 0x9f)
        {
            // C1 code -- caption control codes
            i = handle_cc_c1(cc, service_num, i);
        }
        else if (code <= 0xff)
        {
            // G1 code -- ISO 8859-1 Latin 1 characters
            short character = CCtableG1[code-0xA0];
            append_character(cc, service_num, character);
            i++;
        }

#if DEBUG_CC_SERVICE
        fprintf(stderr, "i %i, blk_size %i\n", i, blk_size);
#endif

        // loop continuation check
        if (old_i == i)
        {
#if DEBUG_CC_SERVICE
            fprintf(stderr, "old_i == i == %1\n", i);
            for (int i=0; i < blk_size; i++)
                fprintf(stderr, "0x%x ", cc->buf[service_num][i]);
            fprintf(stderr, "\n");
#endif
            if (blk_size - i > 10)
            {
                fprintf(stderr, "eia-708 decoding error...");
                cc->Reset(service_num);
                cc->delayed[service_num] = 0;
                i = cc->buf_size[service_num];
            }
            // There must be an incomplete code in buffer...
            break;
        }
        else if (cc->delayed[service_num] && dlc_loc < i)
        {
            // delay in effect
            break;
        }
        else if (cc->delayed[service_num])
        {
            // this delay has already been canceled..
            cc->DelayCancel(service_num);
            cc->delayed[service_num] = 0;
        }
    }

    // get rid of remaining bytes...
    assert(((int)blk_size - i) >= 0);
    if ((blk_size - i) > 0)
    {
        memmove(cc->buf[service_num], cc->buf[service_num] + i,
                blk_size - i);
        cc->buf_size[service_num] -= i;
    }
    else
    {
        if (0 != (blk_size - i))
        {
            fprintf(stderr, "parse_cc_service_stream buffer error "
                    "i(%i) buf_size(%i)\n", i, blk_size);
            for (i=0; i < blk_size; i++)
                fprintf(stderr, "0x%x ", cc->buf[service_num][i]);
            fprintf(stderr, "\n");
        }
        cc->buf_size[service_num] = 0;
    }
}

static int handle_cc_c0_ext1_p16(CC708Reader* cc, uint service_num, int i)
{
    // C0 code -- subset of ASCII misc. control codes
    const int code = cc->buf[service_num][i];
    if (code<=0xf)
    {
        // single byte code
        if (ETX==code)
            SEND_STR;
        else if (BS==code)
            append_character(cc, service_num, 0x08);
        else if (FF==code)
            append_character(cc, service_num, 0x0c);
        else if (CR==code)
            append_character(cc, service_num, 0x0d);
        else if (HCR==code)
            append_character(cc, service_num, 0x0d);
        i++;
    }
    else if (code<=0x17)
    {
        // double byte code
        const int blk_size = cc->buf_size[service_num];
        if (EXT1==code && ((i+1)<blk_size))
        {
            const int code2 = cc->buf[service_num][i+1];
            if (code2<=0x1f)
            {
                // C2 code -- nothing in EIA-708-A
                i = handle_cc_c2(cc, service_num, i+1);
            }
            else if (code2<=0x7f)
            {
                // G2 code -- fractions, drawing, symbols
                append_character(cc, service_num, CCtableG2[code2-0x20]);
                i+=2;
            }
            else if (code2<=0x9f)
            {
                // C3 code -- nothing in EIA-708-A
                i = handle_cc_c3(cc, service_num, i);
            }
            else if (code2<=0xff)
            {
                // G3 code -- one symbol in EIA-708-A "[cc]"
                append_character(cc, service_num, CCtableG3[code2-0xA0]);
                i+=2;
            }
        }
        else if ((i+1)<blk_size)
            i+=2;
    }
    else if (code<=0x1f)
    {
        // triple byte code
        const int blk_size = cc->buf_size[service_num];
        if (P16==code && ((i+2)<blk_size))
        {
            // reserved for large alphabets, but not yet defined
        }
        if ((i+2)<blk_size)
            i+=3;
    }
    return i;
}

static int handle_cc_c1(CC708Reader* cc, uint service_num, int i)
{
    const int blk_size = cc->buf_size[service_num];
    const int code = cc->buf[service_num][i];

    const unsigned char* blk_buf = cc->buf[service_num];
    if (code<=CW7)
    { // no paramaters
        SEND_STR;
        cc->SetCurrentWindow(service_num, code-0x80);
        i+=1;
    }
    else if (DLC == cc->buf[service_num][i])
    {
/* processed out-of-band
        cc->DelayCancel(service_num);
        cc->delayed[service_num] = 0;
*/
        i+=1;
    }
    else if (code>=CLW && code<=DLY && ((i+1)<blk_size))
    { // 1 byte of paramaters
        int param1 = blk_buf[i+1];
        SEND_STR;
        if (CLW==code)
            cc->ClearWindows(service_num, param1);
        else if (DSW==code)
            cc->DisplayWindows(service_num, param1);
        else if (HDW==code)
            cc->HideWindows(service_num, param1);
        else if (TGW==code)
            cc->ToggleWindows(service_num, param1);
        else if (DLW==code)
            cc->DeleteWindows(service_num, param1);
        else if (DLY==code)
        {
            cc->Delay(service_num, param1);
            cc->delayed[service_num] = 1;
        }
        i+=2;
    }
    else if (SPA==code && ((i+2)<blk_size))
    {
        int pen_size  = (blk_buf[i+1]   ) & 0x3;
        int offset    = (blk_buf[i+1]>>2) & 0x3;
        int text_tag  = (blk_buf[i+1]>>4) & 0xf;
        int font_tag  = (blk_buf[i+2]   ) & 0x7;
        int edge_type = (blk_buf[i+2]>>3) & 0x7;
        int underline = (blk_buf[i+2]>>4) & 0x1;
        int italic    = (blk_buf[i+2]>>5) & 0x1;
        SEND_STR;
        cc->SetPenAttributes(service_num, pen_size, offset, text_tag,
                             font_tag, edge_type, underline, italic);
        i+=3;
    }
    else if (SPC==code && ((i+3)<blk_size))
    {
        int fg_color   = (blk_buf[i+1]   ) & 0x3f;
        int fg_opacity = (blk_buf[i+1]>>6) & 0x03;
        int bg_color   = (blk_buf[i+2]   ) & 0x3f;
        int bg_opacity = (blk_buf[i+2]>>6) & 0x03;
        int edge_color = (blk_buf[i+3]>>6) & 0x3f;
        SEND_STR;
        cc->SetPenColor(service_num, fg_color, fg_opacity,
                        bg_color, bg_opacity, edge_color);
        i+=4;
    }
    else if (SPL==code && ((i+2)<blk_size))
    {
        int row = blk_buf[i+1] & 0x0f;
        int col = blk_buf[i+2] & 0x3f;
        SEND_STR;
        cc->SetPenLocation(service_num, row, col);
        i+=3;
    }
    else if (SWA==code && ((i+4)<blk_size))
    {
        int fill_color    = (blk_buf[i+1]   ) & 0x3f;
        int fill_opacity  = (blk_buf[i+1]>>6) & 0x03;
        int border_color  = (blk_buf[i+2]   ) & 0x3f;
        int border_type01 = (blk_buf[i+2]>>6) & 0x03;
        int justify       = (blk_buf[i+3]   ) & 0x03;
        int scroll_dir    = (blk_buf[i+3]>>2) & 0x03;
        int print_dir     = (blk_buf[i+3]>>4) & 0x03;
        int word_wrap     = (blk_buf[i+3]>>6) & 0x01;
        int border_type   = (blk_buf[i+3]>>5) | border_type01;
        int display_eff   = (blk_buf[i+4]   ) & 0x03;
        int effect_dir    = (blk_buf[i+4]>>2) & 0x03;
        int effect_speed  = (blk_buf[i+4]>>4) & 0x0f;
        SEND_STR;
        cc->SetWindowAttributes(
            service_num, fill_color, fill_opacity, border_color, border_type,
            scroll_dir,     print_dir,    effect_dir,
            display_eff,    effect_speed, justify, word_wrap);
        i+=5;
    }
    else if ((code>=DF0) && (code<=DF7) && ((i+6)<blk_size))
    {
        // param1
        int priority = ( blk_buf[i+1]  ) & 0x7;
        int col_lock = (blk_buf[i+1]>>3) & 0x1;
        int row_lock = (blk_buf[i+1]>>4) & 0x1;
        int visible  = (blk_buf[i+1]>>5) & 0x1;
        // param2
        int anchor_vertical = blk_buf[i+2] & 0x7f;
        int relative_pos = (blk_buf[i+2]>>7);
        // param3
        int anchor_horizontal = blk_buf[i+3];
        // param4
        int row_count = blk_buf[i+4] & 0xf;
        int anchor_point = blk_buf[i+4]>>4;
        // param5
        int col_count = blk_buf[i+5] & 0x3f;
        // param6
        int pen_style = blk_buf[i+6] & 0x7;
        int win_style = (blk_buf[i+6]>>3) & 0x7;
        SEND_STR;
        cc->DefineWindow(service_num, code-0x98, priority, visible,
                         anchor_point, relative_pos,
                         anchor_vertical, anchor_horizontal,
                         row_count, col_count, row_lock, col_lock,
                         pen_style, win_style);
        i+=7;
    }
#if DEBUG_CC_SERVICE
    else
    {
        fprintf(stderr, "handle_cc_c1: (NOT HANDLED) "
                "code(0x%02x) i(%i) blk_size(%i)\n", code, i, blk_size);
    }
#endif

    return i;
}

static int handle_cc_c2(CC708Reader* cc, uint service_num, int i)
{
    const int blk_size = cc->buf_size[service_num];
    const int code = cc->buf[service_num][i+1];

    if ((code<=0x7) && ((i+1)<blk_size)){
        i+=2;
        SEND_STR;
    }
    else if ((code<=0xf) && ((i+2)<blk_size))
    {
        i+=3;
        SEND_STR;
    }
    else if ((code<=0x17) && ((i+3)<blk_size))
    {
        i+=4;
        SEND_STR;
    }
    else if ((code<=0x1f) && ((i+4)<blk_size))
    {
        i+=5;
        SEND_STR;
    }
    return i;
}

static int handle_cc_c3(CC708Reader* cc, uint service_num, int i)
{
    const unsigned char* blk_buf = cc->buf[service_num];
    const int blk_size = cc->buf_size[service_num];
    const int code = cc->buf[service_num][i+1];

    if ((code<=0x87) && ((i+5)<blk_size))
    {
        i+=6;
        SEND_STR;
    }
    else if ((code<=0x8f) && ((i+6)<blk_size))
    {
        i+=7;
        SEND_STR;
    }
    else if ((i+2)<blk_size)
    { // varible length commands
        int length = blk_buf[i+2]&0x3f;
        if ((i+length)<blk_size)
        {
            i+=1+length;
            SEND_STR;
        }
    }
    return i;
}

static void rightsize_buf(CC708Reader* cc, uint service_num, uint block_size)
{
    uint min_new_size = block_size + cc->buf_size[service_num];
    if (min_new_size >= cc->buf_alloc[service_num])
    {
        uint new_alloc    = cc->buf_alloc[service_num];
        for (uint i = 0; (i < 32) && (new_alloc <= min_new_size); i++)
            new_alloc *= 2;

        cc->buf[service_num] =
            (unsigned char*) realloc(cc->buf[service_num], new_alloc);
        cc->buf_alloc[service_num] = (cc->buf[service_num]) ? new_alloc : 0;

#if DEBUG_CC_SERVICE_2
        fprintf(stderr, "rightsize_buf: srv %i to %i bytes",
                service_num, cc->buf_alloc[service_num]);
#endif
    }
    assert(min_new_size < cc->buf_alloc[service_num]);
}

static void append_cc(CC708Reader* cc, uint service_num,
                      const unsigned char* blk_buf, int block_size)
{
    assert(cc);
    rightsize_buf(cc, service_num, block_size);

    memcpy(cc->buf[service_num] + cc->buf_size[service_num],
           blk_buf, block_size);

    cc->buf_size[service_num] += block_size;
#if DEBUG_CC_SERVICE_2
    {
        uint i;
        fprintf(stderr, "append_cc: ");
        for (i = 0; i < cc->buf_size[service_num]; i++)
            fprintf(stderr, "0x%x ", cc->buf[service_num][i]);
        fprintf(stderr, "\n");
    }
#endif
    parse_cc_service_stream(cc, service_num);
}

static void parse_cc_packet(CC708Reader* cb_cbs, CaptionPacket* pkt)
{
    const unsigned char* pkt_buf = pkt->data;
    const int pkt_size = pkt->size;
    int off = 1;
    int service_number = 0;
    int block_data_offset = 0;
    int len     = ((((int)pkt_buf[0]) & 0x3f)<<1) - 1;
    int seq_num = (((int)pkt_buf[0])>>6)&0x3;

    if (len < 0)
        return;
#if DEBUG_CC_RAWPACKET
#else
    if (len > pkt_size)
#endif
    {
        int j;
        fprintf(stderr, "CC length(%2i) seq_num(%i) ", len, seq_num);
        for (j = 0; j < pkt_size; j++)
            fprintf(stderr, "0x%x ", pkt_buf[j]);
        fprintf(stderr, "\n");
    }

    assert(pkt_size<127);

    while (pkt_buf[off] && off<pkt_size)
    { // service_block
        int block_size = pkt_buf[off] & 0x1f;
        service_number = (pkt_buf[off]>>5) & 0x7;
        block_data_offset = (0x7==service_number && block_size!=0) ?
            off+2 : off+1;
#if DEBUG_CC_SERVICE_BLOCK
        fprintf(stderr, "service_block size(%i) num(%i) off(%i) ",
                block_size, service_number, block_data_offset);
#endif
        if (off+2 == block_data_offset)
        {
            int extended_service_number = pkt_buf[off+2] & 0x3f;
#if DEBUG_CC_SERVICE_BLOCK
            fprintf(stderr, "ext_svc_num(%i) ", extended_service_number);
#endif
            service_number =  extended_service_number;
        }
        if (service_number)
        {
#if DEBUG_CC_SERVICE
            int i;
            if (!(2==block_size &&
                  0==pkt_buf[block_data_offset] &&
                  0==pkt_buf[block_data_offset+1]))
            {
                fprintf(stderr, "service %i: ", service_number);
                for (i=0; i<block_size; i++)
                    fprintf(stderr, "0x%x ", pkt_buf[block_data_offset+i]);
                fprintf(stderr, "\n");
            }
#endif
            append_cc(cb_cbs, service_number,
                      &pkt_buf[block_data_offset], block_size);
        }
        off+=block_size+1;
    }
    if (off<pkt_size) // must end in null service block, if packet is not full.
        assert(pkt_buf[off]==0);
}

static void append_character(CC708Reader *cc, uint service_num, short ch)
{
    if (cc->temp_str_size[service_num]+2 > cc->temp_str_alloc[service_num])
    {
        int new_alloc = (cc->temp_str_alloc[service_num]) ?
            cc->temp_str_alloc[service_num] * 2 : 64;

        cc->temp_str[service_num] = (short*)
            realloc(cc->temp_str[service_num], new_alloc * sizeof(short));

        assert(cc->temp_str[service_num]);
        cc->temp_str_alloc[service_num] = new_alloc; // shorts allocated
    }

    if (cc->temp_str[service_num])
    {
        int i = cc->temp_str_size[service_num];
        cc->temp_str[service_num][i] = ch;
        cc->temp_str_size[service_num]++;
    }
    else
    {
        cc->temp_str_size[service_num] = 0;
        cc->temp_str_alloc[service_num]=0;
    }
}

ushort CCtableG0[0x60] =
{
//   0    1    2    3       4    5    6    7
//   8    9    a    b       c    d    e    f  
    ' ', '!','\"', '#',    '$', '%', '&', '\'', /* 0x20-0x27 */
    '(', ')', '*', '+',    ',', '-', '.', '/',  /* 0x28-0x2f */
    '0', '1', '2', '3',    '4', '5', '6', '7',  /* 0x30-0x37 */
    '8', '9', ':', ';',    '<', '=', '>', '?',  /* 0x38-0x3f */

    '@', 'A', 'B', 'C',    'D', 'E', 'F', 'G',  /* 0x40-0x47 */
    'H', 'I', 'J', 'K',    'L', 'M', 'N', 'O',  /* 0x48-0x4f */
    'P', 'Q', 'R', 'S',    'T', 'U', 'V', 'W',  /* 0x50-0x57 */
    'X', 'Y', 'Z', '[',    '\\',']', '^', '_',  /* 0x58-0x5f */

    '`', 'a', 'b', 'c',    'd', 'e', 'f', 'g',  /* 0x60-0x67 */
    'h', 'i', 'j', 'k',    'l', 'm', 'n', 'o',  /* 0x68-0x6f */
    'p', 'q', 'r', 's',    't', 'u', 'v', 'w',  /* 0x70-0x77 */
    'x', 'y', 'z', '{',    '|', '}', '~',  0x1d16, // music note/* 0x78-0x7f */
};

ushort CCtableG1[0x60] =
{
//   0    1    2    3       4    5    6    7
//   8    9    a    b       c    d    e    f  
    0xA0, // unicode non-breaking space
         '¡', '¢', '£',    '¤', '¥', '¦', '§', /* 0xa0-0xa7 */
    '¨', '©', 'ª', '«',    '¬', '­', '®', '¯', /* 0xa8-0xaf */
    '°', '±', '²', '³',    '´', 'µ', '¶', '·', /* 0xb0-0xb7 */
    '¸', '¹', 'º', '»',    '¼', '½', '¾', '¿', /* 0xbf-0xbf */

    'À', 'Á', 'Â', 'Ã',    'Ä', 'Å', 'Æ', 'Ç', /* 0xc0-0xc7 */
    'È', 'É', 'Ê', 'Ë',    'Ì', 'Í', 'Î', 'Ï', /* 0xcf-0xcf */
    'Ð', 'Ñ', 'Ò', 'Ó',    'Ô', 'Õ', 'Ö', '×', /* 0xd0-0xd7 */
    'Ø', 'Ù', 'Ú', 'Û',    'Ü', 'Ý', 'Þ', 'ß', /* 0xdf-0xdf */

    'à', 'á', 'â', 'ã',    'ä', 'å', 'æ', 'ç', /* 0xe0-0xe7 */
    'è', 'é', 'ê', 'ë',    'ì', 'í', 'î', 'ï', /* 0xef-0xef */
    'ð', 'ñ', 'ò', 'ó',    'ô', 'õ', 'ö', '÷', /* 0xf0-0xf7 */
    'ø', 'ù', 'ú', 'û',    'ü', 'ý', 'þ', 'ÿ', /* 0xff-0xff */
};

ushort CCtableG2[0x60] =
{
    ' ', /* transparent space */
                        0xA0, /* non-breaking transparent space */
    0,                  0,                     /* 0x20-0x23 */
    0,                  0x2026,/* elipsis */
    0,                  0,                     /* 0x24-0x27 */
    0,                  0,
    0x160,/*S under \/*/0,                     /* 0x28-0x2b */
    0x152, /* CE */     0,
    0,                  0,                     /* 0x2c-0x2f */
    0x2DA, /*super dot*/0x2018,/* open ' */
    0x2019,/*close ' */ 0x201c,/* open " */    /* 0x30-0x33 */
    0x201d,/*close " */ '*',   /* dot */
    0,                  0,                     /* 0x34-0x37 */
    0,                  '#',   /* super TM */
    0x161,/*s under \/*/0,                     /* 0x38-0x3b */
    0x153, /* ce */     '#',   /* super SM */
    0,                  0x178,/*Y w/umlout*/   /* 0x3c-0x3f */
    
//  0         1         2         3
//  4         5         6         7
//  8         9         a         b
//  c         d         e         f  
    0,        0,        0,        0,
    0,        0,        0,        0, /* 0x40-0x47 */
    0,        0,        0,        0,
    0,        0,        0,        0, /* 0x48-0x4f */

    0,        0,        0,        0,
    0,        0,        0,        0, /* 0x50-0x57 */
    0,        0,        0,        0,
    0,        0,        0,        0, /* 0x58-0x5f */

    0,        0,        0,        0,
    0,        0,        0,        0, /* 0x60-0x67 */
    0,        0,        0,        0,
    0,        0,        0,        0, /* 0x68-0x6f */

    0,                  0,
    0,                  0,           /* 0x70-0x73 */
    0,                  0,
    0x215b, /* 1/8 */   0x215c, /* 3/8 */    /* 0x74-0x77 */
    0x215d, /* 5/8 */   0x215e, /* 7/8 */
    0x2502, /*line | */ 0x2510, /*line ~| */ /* 0x78-0x7b */
    0x2514, /*line |_*/ 0x2500, /*line -*/
    0x2518, /*line _|*/ 0x250c, /*line |~ */ /* 0x7c-0x7f */
};

ushort CCtableG3[0x60] =
{
//   0 1  2  3    4  5  6  7     8  9  a  b    c  d  e  f  
    '#', /* [CC] closed captioning logo */
       0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, /* 0xa0-0xaf */
    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, /* 0xb0-0xbf */

    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, /* 0xc0-0xcf */
    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, /* 0xd0-0xdf */

    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, /* 0xe0-0xff */
    0, 0, 0, 0,   0, 0, 0, 0,    0, 0, 0, 0,   0, 0, 0, 0, /* 0xf0-0xff */
};

---