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/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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
 * of the License, 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 this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 */

#include "common/debug.h"
#include "common/rect.h"
#include "common/system.h"

#include "toon/subtitles.h"

namespace Toon {
SubtitleRenderer::SubtitleRenderer(ToonEngine *vm) : _vm(vm) {
    _subSurface = new Graphics::Surface();
	_subSurface->create(TOON_SCREEN_WIDTH, TOON_SCREEN_HEIGHT, Graphics::PixelFormat::createFormatCLUT8());
    _hasSubtitles = false;
}

SubtitleRenderer::~SubtitleRenderer() {
}


void SubtitleRenderer::render(const Graphics::Surface& frame, uint32 frameNumber, char color) {
    if (!_hasSubtitles || _index > _last) {
        return;
    }

    _subSurface->copyFrom(frame);
    // char strf[384] = {0};
    // sprintf(strf, "Time passed: %d", frameNumber);
    // _vm->drawCostumeLine(0, 0, strf, _subSurface);
    // _vm->_system->copyRectToScreen(_subSurface->getBasePtr(0, 0), _subSurface->pitch, 0, 0, _subSurface->w,  _subSurface->h);

    if (frameNumber > _tw[_index].fend) {
        _index++;
        if (_index > _last) {
            return;
        }
        _currentLine = (char*)_fileData + _tw[_index].foffset;
    }

    if (frameNumber < _tw[_index].fstart) {
        return;
    }

    _vm->drawCustomText(TOON_SCREEN_WIDTH / 2, TOON_SCREEN_HEIGHT, _currentLine, _subSurface, color);
    _vm->_system->copyRectToScreen(_subSurface->getBasePtr(0, 0), _subSurface->pitch, 0, 0, _subSurface->w,  _subSurface->h);
}

bool SubtitleRenderer::load(const Common::String &video) {
    warning(video.c_str());

    _hasSubtitles = false;
    _index = 0;

    char srtfile[20] = {0};
    strcpy(srtfile, video.c_str());
    int ln = strlen(srtfile);
    srtfile[ln - 3] = 't';
    srtfile[ln - 2] = 's';
    srtfile[ln - 1] = 's';

    uint32 fileSize = 0;
	uint8 *fileData = _vm->resources()->getFileData(srtfile, &fileSize);
	if (!fileData) {
	 	return false;
    }

    uint32 numOflines = *((uint32*) fileData);
    uint32 idx_size = numOflines * sizeof(TimeWindow);
    memcpy(_tw, sizeof(numOflines) + fileData, idx_size);
    _fileData = sizeof(numOflines) + fileData + idx_size;
    _last = numOflines - 1;

    _currentLine = (char*)_fileData + _tw[0].foffset;
    _hasSubtitles = true;
    return _hasSubtitles;
}

}