forked from mia/Aegisub
71776940f6
Move SMPTE handling to agi::vfr::Framerate to get all of the interesting logic dealing with timcodes in one place, and to make it testable. Completely rewrite the SMPTE time conversions as testing them reveals that they were incorrect in some cases. Originally committed to SVN as r6631.
137 lines
4.8 KiB
C++
137 lines
4.8 KiB
C++
// Copyright (c) 2007, Rodrigo Braz Monteiro
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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//
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// $Id$
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/// @file subtitle_format_transtation.cpp
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/// @brief Reading/writing Transtation-compatible subtitles
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/// @ingroup subtitle_io
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///
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#include "config.h"
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#ifndef AGI_PRE
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#include <stdio.h>
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#endif
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#include "subtitle_format_transtation.h"
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#include "ass_dialogue.h"
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#include "ass_file.h"
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#include "ass_style.h"
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#include "ass_time.h"
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#include "text_file_writer.h"
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TranStationSubtitleFormat::TranStationSubtitleFormat()
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: SubtitleFormat("TranStation")
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{
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}
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wxArrayString TranStationSubtitleFormat::GetWriteWildcards() const {
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wxArrayString formats;
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formats.Add("transtation.txt");
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return formats;
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}
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bool TranStationSubtitleFormat::CanWriteFile(wxString const& filename) const {
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return filename.Lower().EndsWith(".transtation.txt");
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}
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void TranStationSubtitleFormat::WriteFile(const AssFile *src, wxString const& filename, wxString const& encoding) const {
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agi::vfr::Framerate fps = AskForFPS(false, true);
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if (!fps.IsLoaded()) return;
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// Convert to TranStation
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AssFile copy(*src);
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copy.Sort();
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StripComments(copy.Line);
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RecombineOverlaps(copy.Line);
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MergeIdentical(copy.Line);
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SmpteFormatter ft(fps);
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TextFileWriter file(filename, encoding);
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AssDialogue *prev = 0;
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for (std::list<AssEntry*>::iterator it = copy.Line.begin(); it != copy.Line.end(); ++it) {
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AssDialogue *cur = dynamic_cast<AssDialogue*>(*it);
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if (prev && cur) {
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file.WriteLineToFile(ConvertLine(©, prev, fps, ft, cur->Start));
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file.WriteLineToFile("");
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}
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if (cur)
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prev = cur;
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}
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// flush last line
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if (prev)
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file.WriteLineToFile(ConvertLine(©, prev, fps, ft, -1));
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// Every file must end with this line
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file.WriteLineToFile("SUB[");
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}
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wxString TranStationSubtitleFormat::ConvertLine(AssFile *file, AssDialogue *current, agi::vfr::Framerate const& fps, SmpteFormatter const& ft, int nextl_start) const {
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int valign = 0;
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const char *halign = " "; // default is centered
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const char *type = "N"; // no special style
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if (AssStyle *style = file->GetStyle(current->Style)) {
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if (style->alignment >= 4) valign = 4;
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if (style->alignment >= 7) valign = 9;
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if (style->alignment == 1 || style->alignment == 4 || style->alignment == 7) halign = "L";
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if (style->alignment == 3 || style->alignment == 6 || style->alignment == 9) halign = "R";
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if (style->italic) type = "I";
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}
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// Hack: If an italics-tag (\i1) appears anywhere in the line,
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// make it all italics
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if (current->Text.Find("\\i1") != wxNOT_FOUND) type = "I";
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// Write header
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AssTime end = current->End;
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// Subtract one frame if the end time of the current line is equal to the
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// start of next one, since the end timestamp is inclusive and the lines
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// would overlap if left as is.
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if (nextl_start > 0 && end == nextl_start)
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end = fps.TimeAtFrame(fps.FrameAtTime(end, agi::vfr::END) - 1, agi::vfr::END);
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wxString header = wxString::Format("SUB[%i%s%s ", valign, halign, type) + ft.ToSMPTE(current->Start) + ">" + ft.ToSMPTE(end) + "]\r\n";
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// Process text
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wxString lineEnd = "\r\n";
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current->StripTags();
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current->Text.Replace("\\h", " ", true);
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current->Text.Replace("\\n", lineEnd, true);
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current->Text.Replace("\\N", lineEnd, true);
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while (current->Text.Replace(lineEnd + lineEnd, lineEnd, true));
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return header + current->Text;
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}
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