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-rw-r--r--sub/sub_cc.c349
1 files changed, 0 insertions, 349 deletions
diff --git a/sub/sub_cc.c b/sub/sub_cc.c
deleted file mode 100644
index 8919ce84f4..0000000000
--- a/sub/sub_cc.c
+++ /dev/null
@@ -1,349 +0,0 @@
-/*
- * decoder for Closed Captions
- *
- * This decoder relies on MPlayer's OSD to display subtitles.
- * Be warned that decoding is somewhat preliminary, though it basically works.
- *
- * Most notably, only the text information is decoded as of now, discarding
- * color, background and position info (see source below).
- *
- * uses source from the xine closed captions decoder
- *
- * Copyright (C) 2002 Matteo Giani
- *
- * 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.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "config.h"
-#include "sub_cc.h"
-
-#include "subreader.h"
-
-#include "libvo/video_out.h"
-#include "sub.h"
-
-
-#define CC_MAX_LINE_LENGTH 64
-
-static char chartbl[128];
-
-static subtitle buf1,buf2;
-static subtitle *fb,*bb;
-
-static unsigned int cursor_pos=0;
-
-static int initialized=0;
-
-#define CC_ROLLON 1
-#define CC_ROLLUP 2
-
-static int cc_mode=CC_ROLLON;
-static int cc_lines=4; ///< number of visible rows in CC roll-up mode, not used in CC roll-on mode
-
-int subcc_enabled = 0;
-
-static void build_char_table(void)
-{
- int i;
- /* first the normal ASCII codes */
- for (i = 0; i < 128; i++)
- chartbl[i] = (char) i;
- /* now the special codes */
- chartbl[0x2a] = 'á';
- chartbl[0x5c] = 'é';
- chartbl[0x5e] = 'í';
- chartbl[0x5f] = 'ó';
- chartbl[0x60] = 'ú';
- chartbl[0x7b] = 'ç';
- chartbl[0x7c] = '÷';
- chartbl[0x7d] = 'Ñ';
- chartbl[0x7e] = 'ñ';
- chartbl[0x7f] = '¤'; /* FIXME: this should be a solid block */
-}
-
-static void clear_buffer(subtitle *buf)
-{
- int i;
- buf->lines=0;
- for (i = 0; i < SUB_MAX_TEXT; i++) {
- free(buf->text[i]);
- buf->text[i] = NULL;
- }
-}
-
-
-/**
- \brief scroll buffer one line up
- \param buf buffer to scroll
-*/
-static void scroll_buffer(subtitle* buf)
-{
- int i;
-
- while(buf->lines > cc_lines)
- {
- free(buf->text[0]);
-
- for(i = 0; i < buf->lines - 1; i++) buf->text[i] = buf->text[i+1];
-
- buf->text[buf->lines-1] = NULL;
- buf->lines--;
- }
-}
-
-static int channel;
-
-void subcc_init(void)
-{
- int i;
- //printf("subcc_init(): initing...\n");
- build_char_table();
- for(i=0;i<SUB_MAX_TEXT;i++) {buf1.text[i]=buf2.text[i]=NULL;}
- buf1.lines=buf2.lines=0;
- fb=&buf1;
- bb=&buf2;
- channel = -1;
-
- initialized=1;
-}
-
-
-static void display_buffer(subtitle *buf)
-{
- vo_sub = buf;
- vo_osd_changed(OSDTYPE_SUBTITLE);
-}
-
-
-static void append_char(char c)
-{
- if(!bb->lines) {bb->lines++; cursor_pos=0;}
- if(bb->text[bb->lines - 1]==NULL)
- {
- bb->text[bb->lines - 1] = calloc(1, CC_MAX_LINE_LENGTH);
- cursor_pos=0;
- }
-
- if(c=='\n')
- {
- if(cursor_pos>0 && bb->lines < SUB_MAX_TEXT)
- {
- bb->lines++;cursor_pos=0;
- if(cc_mode==CC_ROLLUP){ //Carriage return - scroll buffer one line up
- bb->text[bb->lines - 1]=calloc(1, CC_MAX_LINE_LENGTH);
- scroll_buffer(bb);
- }
- }
- }
- else
- {
- if(cursor_pos==CC_MAX_LINE_LENGTH-1)
- {
- fprintf(stderr,"CC: append_char() reached CC_MAX_LINE_LENGTH!\n");
- return;
- }
- bb->text[bb->lines - 1][cursor_pos++]=c;
- }
- //In CC roll-up mode data should be shown immediately
- if(cc_mode==CC_ROLLUP) display_buffer(bb);
-}
-
-
-static void swap_buffers(void)
-{
- subtitle *foo;
- foo=fb;
- fb=bb;
- bb=foo;
-}
-
-static int selected_channel(void)
-{
- return subcc_enabled - 1;
-}
-
-static void cc_decode_EIA608(unsigned short int data)
-{
-
- static unsigned short int lastcode=0x0000;
- uint8_t c1 = data & 0x7f;
- uint8_t c2 = (data >> 8) & 0x7f;
-
- if (c1 & 0x60) { /* normal character, 0x20 <= c1 <= 0x7f */
- if (channel != (selected_channel() & 1))
- return;
- append_char(chartbl[c1]);
- if(c2 & 0x60) /*c2 might not be a normal char even if c1 is*/
- append_char(chartbl[c2]);
- }
- else if (c1 & 0x10) // control code / special char
- {
- channel = (c1 & 0x08) >> 3;
- if (channel != (selected_channel() & 1))
- return;
- c1&=~0x08;
- if(data!=lastcode)
- {
- if(c2 & 0x40) { /*PAC, Preamble Address Code */
- append_char('\n'); /*FIXME properly interpret PACs*/
- }
- else
- switch(c1)
- {
- case 0x10: break; // ext attribute
- case 0x11:
- if((c2 & 0x30)==0x30)
- {
- //printf("[debug]:Special char (ignored)\n");
- /*cc_decode_special_char()*/;
- }
- else if (c2 & 0x20)
- {
- //printf("[debug]: midrow_attr (ignored)\n");
- /*cc_decode_midrow_attr()*/;
- }
- break;
- case 0x14:
- switch(c2)
- {
- case 0x00: //CC roll-on mode
- cc_mode=CC_ROLLON;
- break;
- case 0x25: //CC roll-up, 2 rows
- case 0x26: //CC roll-up, 3 rows
- case 0x27: //CC roll-up, 4 rows
- cc_lines=c2-0x23;
- cc_mode=CC_ROLLUP;
- break;
- case 0x2C: display_buffer(NULL); //EDM
- clear_buffer(fb); break;
- case 0x2d: append_char('\n'); //carriage return
- break;
- case 0x2e: clear_buffer(bb); //ENM
- break;
- case 0x2f: swap_buffers(); //Swap buffers
- display_buffer(fb);
- clear_buffer(bb);
- break;
- }
- break;
- case 0x17:
- if( c2>=0x21 && c2<=0x23) //TAB
- {
- break;
- }
- }
- }
- }
- lastcode=data;
-}
-
-static void subcc_decode(const uint8_t *inputbuffer, unsigned int inputlength)
-{
- /* The first number may denote a channel number. I don't have the
- * EIA-708 standard, so it is hard to say.
- * From what I could figure out so far, the general format seems to be:
- *
- * repeat
- *
- * 0xfe starts 2 byte sequence of unknown purpose. It might denote
- * field #2 in line 21 of the VBI.
- * Treating it identical of 0xff fixes
- * http://samples.mplayerhq.hu/MPEG-VOB/ClosedCaptions/Starship_Troopers.vob
- *
- * 0xff starts 2 byte EIA-608 sequence, field #1 in line 21 of the VBI.
- * Followed by a 3-code triplet that starts either with 0xff or
- * 0xfe. In either case, the following triplet needs to be ignored
- * for line 21, field 1.
- *
- * 0x00 is padding, followed by 2 more 0x00.
- *
- * 0x01 always seems to appear at the beginning, always seems to
- * be followed by 0xf8, 8-bit number.
- * The lower 7 bits of this 8-bit number seem to denote the
- * number of code triplets that follow.
- * The most significant bit denotes whether the Line 21 field 1
- * captioning information is at odd or even triplet offsets from this
- * beginning triplet. 1 denotes odd offsets, 0 denotes even offsets.
- *
- * Most captions are encoded with odd offsets, so this is what we
- * will assume.
- *
- * until end of packet
- */
- const uint8_t *current = inputbuffer;
- unsigned int curbytes = 0;
- uint8_t data1, data2;
- uint8_t cc_code;
- int odd_offset = 1;
-
- while (curbytes < inputlength) {
- cc_code = current[0];
-
- if (inputlength - curbytes < 2) {
-#ifdef LOG_DEBUG
- fprintf(stderr, "Not enough data for 2-byte CC encoding\n");
-#endif
- break;
- }
-
- data1 = current[1];
- data2 = current[2];
- current += 3; curbytes += 3;
-
- switch (cc_code) {
- case 0xfe:
- case 0xff:
- odd_offset ^= 1;
- if (odd_offset != selected_channel() >> 1)
- break;
- /* expect EIA-608 CC1/CC2 encoding */
- // FIXME check parity!
- // Parity check omitted assuming we are reading from a DVD and therefore
- // we should encounter no "transmission errors".
- cc_decode_EIA608(data1 | (data2 << 8));
- break;
-
- case 0x00:
- /* This seems to be just padding */
- break;
-
- case 0x01:
- odd_offset = data2 >> 7;
- break;
-
- default:
-//#ifdef LOG_DEBUG
- fprintf(stderr, "Unknown CC encoding: %x\n", cc_code);
-//#endif
- break;
- }
- }
-}
-
-
-void subcc_process_data(const uint8_t *inputdata, unsigned int len)
-{
- if(!subcc_enabled) return;
- if(!initialized) subcc_init();
-
- subcc_decode(inputdata, len);
-}
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