/**********************************************************************************************/
/* The MIT License                                                                            */
/*                                                                                            */
/* Copyright 2016-2016 Twitch Interactive, Inc. or its affiliates. All Rights Reserved.       */
/*                                                                                            */
/* Permission is hereby granted, free of charge, to any person obtaining a copy               */
/* of this software and associated documentation files (the "Software"), to deal              */
/* in the Software without restriction, including without limitation the rights               */
/* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell                  */
/* copies of the Software, and to permit persons to whom the Software is                      */
/* furnished to do so, subject to the following conditions:                                   */
/*                                                                                            */
/* The above copyright notice and this permission notice shall be included in                 */
/* all copies or substantial portions of the Software.                                        */
/*                                                                                            */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR                 */
/* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,                   */
/* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE                */
/* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER                     */
/* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,              */
/* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN                  */
/* THE SOFTWARE.                                                                              */
/**********************************************************************************************/
#include "scc.h"
#include "utf8.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#define FRAME_RATE (1000.0/30)
#define SCCTIME2MS(HH,MM,SS,FF) (((HH*3600.0 + MM*60.0 + SS) * 1000.0) + ( FF * FRAME_RATE ))

// 00:00:25:16  9420 9440 aeae ae79 ef75 2068 6176 e520 79ef 75f2 20f2 ef62 eff4 e9e3 732c 2061 6e64 2049 94fe 9723 ea75 73f4 20f7 616e f420 f4ef 2062 e520 61f7 e573 ef6d e520 e96e 2073 7061 e3e5 ae80 942c 8080 8080 942f

int scc_to_608 (const char* line, double* pts, uint16_t* cc, int cc_max)
{
    int cc_count = 0, cc_data = 0, hh = 0, mm = 0, ss = 0, ff = 0;

    // TODO if ';' use 29.79 fps, if ':' use 30 fls
    if (4 == sscanf (line, "%2d:%2d:%2d%*1[:;]%2d", &hh, &mm, &ss, &ff)) {
        (*pts) = SCCTIME2MS (hh,mm,ss,ff); // scc files start at one hour for some reason
        line += 12;

        while (1 == sscanf (line, "%04x ", &cc_data)) {
            line += 5; cc[cc_count] = cc_data; ++cc_count;

            if (cc_count >= cc_max) {
                break;
            }
        }
    }

    return cc_count;
}