110 lines
3.3 KiB
C++
110 lines
3.3 KiB
C++
// Copyright (c) 2005-2006, Rodrigo Braz Monteiro, Fredrik Mellbin
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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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// -----------------------------------------------------------------------------
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//
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// AEGISUB
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//
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// Website: http://aegisub.cellosoft.com
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// Contact: mailto:zeratul@cellosoft.com
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//
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// The FrameRate class stores all times internally as ints in ms precision
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// V1 timecodes are partially expanded to v2 up until their last override line
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// V2 timecodes are kept as is and if n frames beyond the end is requested a
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// time is calculated by last_time+n/average_fps
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#pragma once
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///////////
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// Headers
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#include <list>
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#include <vector>
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#include <wx/wxprec.h>
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#include <wx/dynarray.h>
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///////////////////////
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// Framerate type enum
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enum ASS_FrameRateType {
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NONE,
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CFR,
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VFR
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};
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///////////////////
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// Framerate class
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class FrameRate {
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friend class VideoContext;
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private:
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double last_time;
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int last_frame;
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std::vector<int> Frame;
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// contains the assumed fps for v1 timecodes, average for v2 and actual fps for cfr
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double AverageFrameRate;
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void AddFrame(int ms);
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void Clear();
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void CalcAverage();
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int PFrameAtTime(int ms,bool useCeil=false);
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int PTimeAtFrame(int frame);
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ASS_FrameRateType FrameRateType;
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bool loaded;
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wxString vfrFile;
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public:
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FrameRate();
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~FrameRate();
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void SetCFR(double fps);
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void SetVFR(std::vector<int> times);
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// Loading always unloads even on failure
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void Load(wxString file);
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void Unload();
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int GetFrameAtTime(int ms,bool start=true);
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int GetTimeAtFrame(int frame,bool start=true,bool exact=false);
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double GetAverage() { return AverageFrameRate; };
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bool IsLoaded() { return loaded; };
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ASS_FrameRateType GetFrameRateType() { return FrameRateType; };
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wxString GetFilename() { return vfrFile; };
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wxArrayInt GetFrameTimeList();
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double GetCommonFPS();
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};
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///////////
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// Globals
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extern FrameRate VFR_Output;
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extern FrameRate VFR_Input;
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