Aegisub/vsfilter/subtitles/CCDecoder.cpp

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/*
* Copyright (C) 2003-2006 Gabest
* http://www.gabest.org
*
* This Program 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, or (at your option)
* any later version.
*
* This Program 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 GNU Make; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
* http://www.gnu.org/copyleft/gpl.html
*
*/
#include "StdAfx.h"
#include "ccdecoder.h"
CCDecoder::CCDecoder(CString fn, CString rawfn) : m_fn(fn), m_rawfn(rawfn)
{
m_sts.CreateDefaultStyle(ANSI_CHARSET);
m_time = 0;
m_fEndOfCaption = false;
memset(m_buff, 0, sizeof(m_buff));
memset(m_disp, 0, sizeof(m_disp));
m_cursor = CPoint(0, 0);
if(!m_rawfn.IsEmpty())
_tremove(m_rawfn);
}
CCDecoder::~CCDecoder()
{
if(!m_sts.IsEmpty() && !m_fn.IsEmpty())
{
m_sts.Sort();
m_sts.SaveAs(m_fn, EXTSRT, -1, CTextFile::ASCII);
m_sts.SaveAs(m_fn.Left(m_fn.ReverseFind('.')+1) + _T("utf8.srt"), EXTSRT, -1, CTextFile::UTF8);
m_sts.SaveAs(m_fn.Left(m_fn.ReverseFind('.')+1) + _T("utf16le.srt"), EXTSRT, -1, CTextFile::LE16);
m_sts.SaveAs(m_fn.Left(m_fn.ReverseFind('.')+1) + _T("utf16be.srt"), EXTSRT, -1, CTextFile::BE16);
}
}
void CCDecoder::MoveCursor(int x, int y)
{
m_cursor = CPoint(x, y);
if(m_cursor.x < 0) m_cursor.x = 0;
if(m_cursor.y < 0) m_cursor.y = 0;
if(m_cursor.x >= 32) m_cursor.x = 0, m_cursor.y++;
if(m_cursor.y >= 16) m_cursor.y = 0;
}
void CCDecoder::OffsetCursor(int x, int y)
{
MoveCursor(m_cursor.x + x, m_cursor.y + y);
}
void CCDecoder::PutChar(WCHAR c)
{
m_buff[m_cursor.y][m_cursor.x] = c;
OffsetCursor(1, 0);
}
void CCDecoder::SaveDisp(__int64 time)
{
CStringW str;
for(int row = 0; row < 16; row++)
{
bool fNonEmptyRow = false;
for(int col = 0; col < 32; col++)
{
if(m_disp[row][col])
{
CStringW str2(&m_disp[row][col]);
if(fNonEmptyRow) str += ' ';
str += str2;
col += str2.GetLength();
fNonEmptyRow = true;
}
}
if(fNonEmptyRow) str += '\n';
}
if(str.IsEmpty()) return;
m_sts.Add(str, true, (int)m_time, (int)time);
}
void CCDecoder::DecodeCC(BYTE* buff, int len, __int64 time)
{
if(!m_rawfn.IsEmpty())
{
if(FILE* f = _tfopen(m_rawfn, _T("at")))
{
_ftprintf(f, _T("%02d:%02d:%02d.%03d\n"),
(int)(time/1000/60/60),
(int)((time/1000/60)%60),
(int)((time/1000)%60),
(int)(time%1000));
for(int i = 0; i < len; i++)
{
_ftprintf(f, _T("%02x"), buff[i]);
if(i < len-1) _ftprintf(f, _T(" "));
if(i > 0 && (i&15)==15) _ftprintf(f, _T("\n"));
}
if(len > 0) _ftprintf(f, _T("\n\n"));
fclose(f);
}
}
for(int i = 0; i < len; i++)
{
BYTE c = buff[i]&0x7f;
if(c >= 0x20)
{
static WCHAR charmap[0x60] =
{
' ','!','"','#','$','%','&','\'','(',')','á','+',',','-','.','/',
'0','1','2','3','4','5','6','7','8','9',':',';','<','=','>','?',
'@','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O',
'P','Q','R','S','T','U','V','W','X','Y','Z','[','é',']','í','ó',
'ú','a','b','c','d','e','f','g','h','i','j','k','l','m','n','o',
'p','q','r','s','t','u','v','w','x','y','z','ç','÷','N','n','?'
};
PutChar(charmap[c - 0x20]);
}
else if(buff[i] != 0x80 && i < len-1)
{
// codes and special characters are supposed to be doubled
if(i < len-3 && buff[i] == buff[i+2] && buff[i+1] == buff[i+3])
i += 2;
c = buff[i+1]&0x7f;
if(buff[i] == 0x91 && c >= 0x20 && c < 0x30) // formating
{
// TODO
}
else if(buff[i] == 0x91 && c == 0x39) // transparent space
{
OffsetCursor(1, 0);
}
else if(buff[i] == 0x91 && c >= 0x30 && c < 0x40) // special characters
{
static WCHAR charmap[0x10] =
{
0x00ae, // (r)egistered
0x00b0, // degree
0x00bd, // 1/2
0x00bf, // inverted question mark
0x2122, // trade mark
0x00a2, // cent
0x00a3, // pound
0x266a, // music
0x00e0, // a`
0x00ff, // transparent space, handled above
0x00e8, // e`
0x00e2, // a^
0x00ea, // e^
0x00ee, // i^
0x00f4, // o^
0x00fb, // u^
};
PutChar(charmap[c - 0x30]);
}
else if(buff[i] == 0x92 && c >= 0x20 && c < 0x40) // extended characters
{
static WCHAR charmap[0x20] =
{
0x00c0, // A'
0x00c9, // E'
0x00d3, // O'
0x00da, // U'
0x00dc, // U:
0x00fc, // u:
0x2018, // `
0x00a1, // inverted !
0x002a, // *
0x2019, // '
0x002d, // -
0x00a9, // (c)opyright
0x2120, // SM
0x00b7, // . (dot in the middle)
0x201c, // inverted "
0x201d, // "
0x00c1, // A`
0x00c2, // A^
0x00c7, // C,
0x00c8, // E`
0x00ca, // E^
0x00cb, // E:
0x00eb, // e:
0x00ce, // I^
0x00cf, // I:
0x00ef, // i:
0x00d4, // O^
0x00d9, // U`
0x00f9, // u`
0x00db, // U^
0x00ab, // <<
0x00bb, // >>
};
PutChar(charmap[c - 0x20]);
}
else if(buff[i] == 0x13 && c >= 0x20 && c < 0x40) // more extended characters
{
static WCHAR charmap[0x20] =
{
0x00c3, // A~
0x00e3, // a~
0x00cd, // I'
0x00cc, // I`
0x00ec, // i`
0x00d2, // O`
0x00f2, // o`
0x00d5, // O~
0x00f5, // o~
0x007b, // {
0x007d, // }
0x005c, // /* \ */
0x005e, // ^
0x005f, // _
0x00a6, // |
0x007e, // ~
0x00c4, // A:
0x00e4, // a:
0x00d6, // O:
0x00f6, // o:
0x00df, // B (ss in german)
0x00a5, // Y=
0x00a4, // ox
0x007c, // |
0x00c5, // Ao
0x00e5, // ao
0x00d8, // O/
0x00f8, // o/
0x250c, // |-
0x2510, // -|
0x2514, // |_
0x2518, // _|
};
PutChar(charmap[c - 0x20]);
}
else if(buff[i] == 0x94 && buff[i+1] == 0xae) // Erase Non-displayed [buffer] Memory
{
memset(m_buff, 0, sizeof(m_buff));
}
else if(buff[i] == 0x94 && buff[i+1] == 0x20) // Resume Caption Loading
{
memset(m_buff, 0, sizeof(m_buff));
}
else if(buff[i] == 0x94 && buff[i+1] == 0x2f) // End Of Caption
{
if(memcmp(m_disp, m_buff, sizeof(m_disp)) != 0)
{
if(m_fEndOfCaption)
SaveDisp(time + (i/2)*1000/30);
m_fEndOfCaption = true;
memcpy(m_disp, m_buff, sizeof(m_disp));
m_time = time + (i/2)*1000/30;
}
}
else if(buff[i] == 0x94 && buff[i+1] == 0x2c) // Erase Displayed Memory
{
if(m_fEndOfCaption)
{
m_fEndOfCaption = false;
SaveDisp(time + (i/2)*1000/30);
}
memset(m_disp, 0, sizeof(m_disp));
}
else if(buff[i] == 0x97 && (buff[i+1] == 0xa1 || buff[i+1] == 0xa2 || buff[i+1] == 0x23)) // Tab Over
{
OffsetCursor(buff[i+1]&3, 0);
}
else if(buff[i] == 0x91 || buff[i] == 0x92 || buff[i] == 0x15 || buff[i] == 0x16
|| buff[i] == 0x97 || buff[i] == 0x10 || buff[i] == 0x13 || buff[i] == 0x94) // curpos, color, underline
{
int row = 0;
switch(buff[i])
{
default:
case 0x91: row = 0; break;
case 0x92: row = 2; break;
case 0x15: row = 4; break;
case 0x16: row = 6; break;
case 0x97: row = 8; break;
case 0x10: row = 10; break;
case 0x13: row = 12; break;
case 0x94: row = 14; break;
}
if(buff[i+1]&0x20) row++;
int col = buff[i+1]&0xe;
if(col == 0 || (col > 0 && !(buff[i+1]&0x10))) col = 0;
else col <<= 1;
MoveCursor(col, row);
}
else
{
int iiii = 0;
}
i++;
}
}
}
void CCDecoder::ExtractCC(BYTE* buff, int len, __int64 time)
{
for(int i = 0; i < len-9; i++)
{
if(*(DWORD*)&buff[i] == 0xb2010000 && *(DWORD*)&buff[i+4] == 0xf8014343)
{
i += 8;
int nBytes = buff[i++]&0x3f;
if(nBytes > 0)
{
nBytes = (nBytes+1)&~1;
BYTE* pData1 = new BYTE[nBytes];
BYTE* pData2 = new BYTE[nBytes];
if(pData1 && pData2)
{
int nBytes1 = 0, nBytes2 = 0;
for(int j = 0; j < nBytes && i < 0x800;)
{
if(buff[i++] == 0xff)
{
pData1[nBytes1++] = buff[i++];
pData1[nBytes1++] = buff[i++];
}
else i+=2;
j++;
if(j >= nBytes) break;
if(buff[i++] == 0xff)
{
pData2[nBytes2++] = buff[i++];
pData2[nBytes2++] = buff[i++];
}
else i+=2;
j++;
}
if(nBytes1 > 0)
DecodeCC(pData1, nBytes1, time);
if(nBytes2 > 0)
DecodeCC(pData2, nBytes2, time);
}
if(pData1) delete [] pData1;
if(pData2) delete [] pData2;
}
break;
}
}
}