2006-02-21 19:49:57 +01:00
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// Copyright (c) 2005-2006, Rodrigo Braz Monteiro, Fredrik Mellbin
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2006-01-16 22:02:54 +01:00
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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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///////////
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// Headers
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2006-03-14 01:08:56 +01:00
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#include <wx/filename.h>
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2006-01-16 22:02:54 +01:00
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#include "vfr.h"
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2006-02-21 19:49:57 +01:00
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#include "utils.h"
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2006-03-14 01:08:56 +01:00
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#include "text_file_reader.h"
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2006-01-16 22:02:54 +01:00
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/////////////////////
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// V2 Clear function
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2006-02-21 19:49:57 +01:00
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void FrameRate::Clear () {
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2006-01-16 22:02:54 +01:00
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Frame.clear();
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}
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////////////////
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// V2 Add frame
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2006-02-21 19:49:57 +01:00
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void FrameRate::AddFrame(int ms) {
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Frame.push_back(ms);
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2006-01-16 22:02:54 +01:00
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}
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//////////////////
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// V2 Get Average
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2006-02-21 19:49:57 +01:00
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void FrameRate::CalcAverage() {
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2006-02-24 00:24:35 +01:00
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if (Frame.size() <= 1)
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2006-02-24 00:13:56 +01:00
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throw _("No timecodes to average");
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2006-02-24 00:24:35 +01:00
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AverageFrameRate = double(Frame.back()) / (Frame.size()-1);
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2006-01-16 22:02:54 +01:00
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}
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//////////////////////// FrameRate //////////////////////
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///////////////
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// Constructor
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FrameRate::FrameRate() {
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2006-02-21 19:49:57 +01:00
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Unload();
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2006-01-16 22:02:54 +01:00
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}
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//////////////
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// Destructor
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FrameRate::~FrameRate() {
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2006-02-24 17:45:10 +01:00
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Unload();
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2006-01-16 22:02:54 +01:00
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}
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//////////////////
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// Loads VFR file
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void FrameRate::Load(wxString filename) {
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using namespace std;
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2006-02-24 17:45:10 +01:00
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Unload();
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2006-01-16 22:02:54 +01:00
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// Check if file exists
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wxFileName filetest(filename);
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if (!filetest.FileExists()) throw _T("File not found.");
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// Open file
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2006-03-14 01:08:56 +01:00
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TextFileReader file(filename);
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2006-01-16 22:02:54 +01:00
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2006-02-24 17:45:10 +01:00
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try {
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// Read header
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2006-03-14 01:08:56 +01:00
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wxString curLine;
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curLine = file.ReadLineFromFile();
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wxString header = curLine;
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2006-03-14 01:33:31 +01:00
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bool first = (header.Left(7).Lower() == _T("assume "));
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2006-02-24 17:45:10 +01:00
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// V1, code converted from avcvfr9
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2006-03-14 01:33:31 +01:00
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if (header == _T("# timecode format v1") || first) {
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2006-03-14 01:08:56 +01:00
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// Locate the default fps line
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do {
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2006-03-14 01:33:31 +01:00
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// Get next line
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if (!first) curLine = file.ReadLineFromFile();
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first = false;
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2006-03-14 01:08:56 +01:00
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// Skip empty lines and comments
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if (curLine == _T("") || curLine.Left(1) == _T("#")) continue;
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2006-02-24 17:45:10 +01:00
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2006-03-14 01:08:56 +01:00
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else if (curLine.Left(7).Lower() != _T("assume ")) throw _T("Encountered data before 'Assume <fps>' line");
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2006-02-24 17:45:10 +01:00
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else {
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2006-03-14 01:08:56 +01:00
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if (!curLine.Mid(6).ToDouble(&AverageFrameRate) || AverageFrameRate <= 0) throw _T("Invalid 'Assume <fps>' line");
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2006-02-24 17:45:10 +01:00
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break;
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}
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2006-03-14 01:08:56 +01:00
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} while (file.HasMoreLines());
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// Read and expand all timecodes to v2
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2006-02-24 17:45:10 +01:00
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wxString curline;
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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double currenttime = 0;
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int lposition = -1;
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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long lstart;
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long lend;
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double lfps;
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2006-02-21 19:49:57 +01:00
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2006-03-14 01:08:56 +01:00
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while (file.HasMoreLines()) {
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curLine = file.ReadLineFromFile();
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2006-02-24 17:45:10 +01:00
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2006-03-14 01:08:56 +01:00
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// Skip empty lines and comments
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2006-02-24 17:45:10 +01:00
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if (curLine == _T("") || curLine.Left(1) == _T("#"))
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continue;
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wxString tmp = curLine.AfterFirst(_T(','));
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wxString temp = curLine.BeforeFirst(_T(','));
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if (!temp.ToLong(&lstart) || lstart < 0)
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throw _T("Timecode parsing error, invalid start format found");
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temp = tmp.BeforeLast(_T(','));
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if (!temp.ToLong(&lend) || lend < 0)
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throw _T("Timecode parsing error, invalid end format found");
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temp = tmp.AfterLast(_T(','));
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if (!temp.ToDouble(&lfps) || lfps <= 0)
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throw _T("Timecode parsing error, invalid fps format found");
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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for (int i = 0; i <= lstart - lposition - 2; i++)
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AddFrame(floor(currenttime+(i*1000) / AverageFrameRate));
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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currenttime += ((lstart - lposition - 1)*1000) / AverageFrameRate;
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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for (int i = 0; i <= lend - lstart; i++)
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AddFrame(floor(currenttime+(i*1000) / lfps));
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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currenttime += ((lend - lstart + 1)*1000) / lfps;
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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lposition = lend;
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}
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last_time = currenttime;
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last_frame = Frame.size();
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2006-01-16 22:02:54 +01:00
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}
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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// V2
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else if (header == _T("# timecode format v2")) {
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// Assigns new VFR file
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FrameRateType = VFR;
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2006-01-16 22:02:54 +01:00
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2006-02-24 17:45:10 +01:00
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long lftime = -1;
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long cftime = 0;
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last_frame = 0;
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2006-01-16 22:02:54 +01:00
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2006-02-24 17:45:10 +01:00
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// Reads body
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2006-03-14 01:08:56 +01:00
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while (file.HasMoreLines()) {
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curLine = file.ReadLineFromFile();
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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//skip empty lines and comments
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if (curLine == _T("") || curLine.Left(1) == _T("#"))
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continue;
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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wxString tmp = curLine.BeforeFirst(_T('.'));
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tmp.ToLong(&cftime);
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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if (lftime >= cftime)
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throw _T("Out of order/too close timecodes found");
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2006-02-24 00:13:56 +01:00
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2006-02-24 17:45:10 +01:00
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AddFrame(cftime);
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lftime = cftime;
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2006-02-24 00:13:56 +01:00
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}
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2006-02-24 17:45:10 +01:00
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last_time = cftime;
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last_frame = Frame.size();
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2006-02-21 19:49:57 +01:00
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2006-02-24 17:45:10 +01:00
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CalcAverage();
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2006-02-24 00:13:56 +01:00
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2006-02-24 17:45:10 +01:00
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}
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2006-01-16 22:02:54 +01:00
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2006-02-24 17:45:10 +01:00
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// Unknown
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2006-03-14 01:08:56 +01:00
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else {
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2006-02-24 17:45:10 +01:00
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throw _T("Unknown file format.");
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2006-03-14 01:08:56 +01:00
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}
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2006-02-24 17:45:10 +01:00
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2006-03-14 01:08:56 +01:00
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}
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catch (...) {
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2006-02-21 19:49:57 +01:00
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Unload();
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2006-02-24 17:45:10 +01:00
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throw;
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2006-01-16 22:02:54 +01:00
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}
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// Close file
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loaded = true;
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vfrFile = filename;
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2006-06-27 21:11:41 +02:00
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FrameRateType = VFR;
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2006-01-16 22:02:54 +01:00
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}
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//////////
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// Unload
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void FrameRate::Unload () {
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FrameRateType = NONE;
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AverageFrameRate = 0;
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2006-02-21 19:49:57 +01:00
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last_time = 0;
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last_frame = 0;
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Clear();
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2006-01-16 22:02:54 +01:00
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loaded = false;
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vfrFile = _T("");
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}
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///////////////
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// Sets to CFR
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2006-02-24 17:45:10 +01:00
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void FrameRate::SetCFR(double fps) {
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2006-02-21 19:49:57 +01:00
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Unload();
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2006-06-27 21:11:41 +02:00
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loaded = true;
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2006-01-16 22:02:54 +01:00
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FrameRateType = CFR;
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AverageFrameRate = fps;
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}
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2006-02-23 02:44:48 +01:00
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///////////////
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// Sets to VFR
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void FrameRate::SetVFR(std::vector<int> newTimes) {
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// Prepare
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Unload();
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2006-02-24 00:13:56 +01:00
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2006-06-27 21:11:41 +02:00
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loaded = true;
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2006-02-23 02:44:48 +01:00
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FrameRateType = VFR;
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2006-02-24 00:13:56 +01:00
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// Set new VFR;
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2006-02-23 02:44:48 +01:00
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Frame = newTimes;
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2006-02-24 00:13:56 +01:00
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CalcAverage();
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2006-02-23 02:44:48 +01:00
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last_time = newTimes.back();
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2006-02-24 00:13:56 +01:00
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last_frame = newTimes.size();
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2006-02-23 02:44:48 +01:00
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}
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2006-02-24 23:46:21 +01:00
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/////////////////////////////
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// Gets frame number at time
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int FrameRate::PFrameAtTime(int ms,bool useceil) {
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2006-02-25 00:16:20 +01:00
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// Check if it's loaded
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2006-06-27 21:11:41 +02:00
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if (!loaded) return -1;
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2006-02-24 23:46:21 +01:00
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2006-02-25 00:16:20 +01:00
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// Normalize miliseconds
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ms = MAX(ms,0);
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2006-02-24 23:46:21 +01:00
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2006-02-25 00:16:20 +01:00
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// Get for constant frame rate
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2006-06-27 21:11:41 +02:00
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if (FrameRateType == CFR || Frame.size() == 0) {
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2006-06-21 23:58:23 +02:00
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double value = double(ms) * AverageFrameRate / 1000.0;
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2006-02-25 00:16:20 +01:00
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if (useceil) return ceil(value);
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else return floor(value);
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2006-02-24 23:46:21 +01:00
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}
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2006-02-25 00:16:20 +01:00
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// Get for variable frame rate
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2006-02-24 23:46:21 +01:00
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else if (FrameRateType == VFR) {
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2006-04-04 13:37:27 +02:00
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// Get last
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double trueLast;
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2006-04-04 15:22:45 +02:00
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//if (useceil) trueLast = ceil(last_time);
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//else trueLast = floor(last_time);
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trueLast = Frame[Frame.size()-1];
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2006-04-04 13:37:27 +02:00
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2006-02-25 00:16:20 +01:00
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// Inside VFR range
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2006-04-04 13:37:27 +02:00
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if (ms < trueLast) {
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2006-02-25 00:16:20 +01:00
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// Prepare binary search
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2006-02-24 23:46:21 +01:00
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size_t start = 0;
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size_t end = last_frame;
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size_t cur;
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bool largerEqual;
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2006-02-25 00:16:20 +01:00
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// Do binary search
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2006-02-24 23:46:21 +01:00
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while (start <= end) {
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2006-02-25 00:16:20 +01:00
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// Current frame being checked
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2006-02-24 23:46:21 +01:00
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cur = (start+end)>>1;
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2006-02-25 00:16:20 +01:00
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// Is it larger or equal to searched time?
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2006-02-24 23:46:21 +01:00
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largerEqual = Frame[cur] >= ms;
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2006-02-25 00:16:20 +01:00
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// If it is, is the previous smaller?
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// If so, this is the frame we're looking for
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2006-02-25 00:26:24 +01:00
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if (largerEqual && (cur == 0 || Frame[cur-1] < ms)) {
|
|
|
|
if (useceil) return cur;
|
|
|
|
return cur-1;
|
|
|
|
}
|
2006-02-24 23:46:21 +01:00
|
|
|
|
2006-02-25 00:16:20 +01:00
|
|
|
// Not found, continue search
|
2006-02-24 23:46:21 +01:00
|
|
|
if (largerEqual) end = cur-1;
|
|
|
|
else start = cur+1;
|
|
|
|
}
|
2006-02-25 00:16:20 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// After VFR range
|
|
|
|
else {
|
2006-04-04 13:37:27 +02:00
|
|
|
if (useceil) return last_frame + ceil((ms-last_time) * AverageFrameRate / 1000);
|
|
|
|
else return last_frame + floor((ms-last_time) * AverageFrameRate / 1000);
|
2006-02-24 23:46:21 +01:00
|
|
|
}
|
|
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
//////////////////////
|
|
|
|
// Gets time at frame
|
|
|
|
int FrameRate::PTimeAtFrame(int frame) {
|
2006-02-25 00:16:20 +01:00
|
|
|
// Not loaded
|
2006-06-27 21:11:41 +02:00
|
|
|
if (!loaded) return -1;
|
2006-02-25 00:16:20 +01:00
|
|
|
|
|
|
|
// For negative/zero times, fallback to zero
|
2006-02-24 23:46:21 +01:00
|
|
|
if (frame <= 0) return 0;
|
|
|
|
|
2006-02-25 00:16:20 +01:00
|
|
|
// Constant frame rate
|
2006-06-27 21:11:41 +02:00
|
|
|
if (FrameRateType == CFR || Frame.size() == 0) {
|
2006-02-24 23:46:21 +01:00
|
|
|
return floor(double(frame) / AverageFrameRate * 1000.0);
|
|
|
|
}
|
2006-02-25 00:16:20 +01:00
|
|
|
|
|
|
|
// Variable frame rate
|
|
|
|
else if (FrameRateType == VFR) {
|
|
|
|
// Is it inside frame rate range? If so, just get the value from timecodes table
|
2006-03-14 01:33:31 +01:00
|
|
|
if (frame < (signed) Frame.size()) return Frame.at(frame);
|
2006-02-25 00:16:20 +01:00
|
|
|
|
|
|
|
// Otherwise, calculate it
|
2006-03-14 01:33:31 +01:00
|
|
|
else return floor(Frame.back() + double(frame-Frame.size()+1) / AverageFrameRate * 1000.0);
|
2006-02-25 00:16:20 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
// Unknown frame rate type
|
2006-02-24 23:46:21 +01:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2006-01-16 22:02:54 +01:00
|
|
|
/////////////////////////////
|
|
|
|
// Get correct frame at time
|
2006-02-21 19:49:57 +01:00
|
|
|
// returns the adjusted time for end frames when start=false
|
|
|
|
// otherwise for start frames
|
2006-02-24 17:45:10 +01:00
|
|
|
int FrameRate::GetFrameAtTime(int ms,bool start) {
|
2006-02-24 23:57:24 +01:00
|
|
|
return PFrameAtTime(ms,start);
|
2006-01-16 22:02:54 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/////////////////////////////
|
|
|
|
// Get correct time at frame
|
2006-02-21 19:49:57 +01:00
|
|
|
// compensates and returns an end time when start=false
|
2006-02-25 00:07:30 +01:00
|
|
|
int FrameRate::GetTimeAtFrame(int frame,bool start,bool exact) {
|
2006-02-24 23:14:37 +01:00
|
|
|
int finalTime;
|
2006-02-25 00:07:30 +01:00
|
|
|
|
|
|
|
// Exact, for display
|
|
|
|
if (exact) {
|
|
|
|
finalTime = PTimeAtFrame(frame);
|
2006-02-24 23:14:37 +01:00
|
|
|
}
|
2006-02-25 00:07:30 +01:00
|
|
|
|
|
|
|
// Adjusted, for subs sync
|
2006-02-24 23:14:37 +01:00
|
|
|
else {
|
2006-02-25 00:07:30 +01:00
|
|
|
if (start) {
|
|
|
|
finalTime = (PTimeAtFrame(frame-1) + PTimeAtFrame(frame))/2;
|
|
|
|
}
|
|
|
|
else {
|
2006-02-25 00:26:24 +01:00
|
|
|
//if (FrameRateType == VFR) finalTime = PTimeAtFrame(frame);
|
|
|
|
//else finalTime = (PTimeAtFrame(frame) + PTimeAtFrame(frame+1))/2;
|
|
|
|
finalTime = (PTimeAtFrame(frame) + PTimeAtFrame(frame+1))/2;
|
2006-02-25 00:07:30 +01:00
|
|
|
}
|
2006-02-24 23:14:37 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return finalTime;
|
2006-01-16 22:02:54 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
///////////
|
|
|
|
// Globals
|
|
|
|
FrameRate VFR_Output;
|
|
|
|
FrameRate VFR_Input;
|