Aegisub/src/export_framerate.h

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// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
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#include "ass_export_filter.h"
#include <libaegisub/vfr.h>
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class AssDialogue;
class AssOverrideParameter;
class wxCheckBox;
class wxRadioButton;
class wxTextCtrl;
/// @class AssTransformFramerateFilter
/// @brief Transform subtitle times, including those in override tags, from an input framerate to an output framerate
class AssTransformFramerateFilter final : public AssExportFilter {
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agi::Context *c = nullptr;
AssDialogue *line = nullptr;
int newStart = 0;
int newEnd = 0;
int newK = 0;
int oldK = 0;
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// Yes, these are backwards. It sort of makes sense if you think about what it's doing.
agi::vfr::Framerate Input; ///< Destination frame rate
agi::vfr::Framerate Output; ///< Source frame rate
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wxTextCtrl *InputFramerate; ///< Input frame rate text box
wxTextCtrl *OutputFramerate; ///< Output frame rate text box
wxRadioButton *RadioOutputCFR; ///< CFR radio control
wxRadioButton *RadioOutputVFR; ///< VFR radio control
wxCheckBox *Reverse; ///< Switch input and output
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/// @brief Apply the transformation to a file
/// @param subs File to process
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void TransformFrameRate(AssFile *subs);
/// @brief Transform a single tag
/// @param name Name of the tag
/// @param curParam Current parameter being processed
/// @param userdata Filter instance
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static void TransformTimeTags(std::string const& name, AssOverrideParameter *curParam, void *userdata);
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/// @brief Convert a time from the input frame rate to the output frame rate
/// @param time Time in ms to convert
/// @return Time in ms
///
/// This preserves two things:
/// 1. The frame number
/// 2. The relative distance between the beginning of the frame which time
/// is in and the beginning of the next frame
int ConvertTime(int time);
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public:
AssTransformFramerateFilter();
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void ProcessSubs(AssFile *subs, wxWindow *) override;
wxWindow *GetConfigDialogWindow(wxWindow *parent, agi::Context *c) override;
void LoadSettings(bool is_default, agi::Context *c) override;
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};