Aegisub/aegisub/subtitle_format_dvd.cpp

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// Copyright (c) 2008, 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
//
// Website: http://aegisub.cellosoft.com
// Contact: mailto:zeratul@cellosoft.com
//
#pragma once
///////////
// Headers
#include "subtitle_format_dvd.h"
#include "video_provider_dummy.h"
#include "subtitles_provider.h"
#include "ass_dialogue.h"
#include "ass_file.h"
///////////////
// Format name
wxString DVDSubtitleFormat::GetName() {
return _T("DVD Subpictures");
}
//////////////
// Extensions
wxArrayString DVDSubtitleFormat::GetWriteWildcards() {
wxArrayString results;
results.Add(_T("sup"));
return results;
}
/////////////
// Can write
bool DVDSubtitleFormat::CanWriteFile(wxString filename) {
return (filename.Lower().EndsWith(_T(".sup")));
}
///////////////////////
// Actually write them
void DVDSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
// Create video frame
int w = 720;
int h = 480;
VideoProvider *video = new DummyVideoProvider(10,1,w,h,wxColour(255,0,0),false);
AegiVideoFrame srcFrame;
srcFrame.CopyFrom(video->GetFrame(0));
delete video;
// Subtitles
SubtitlesProvider *provider = SubtitlesProviderFactory::GetProvider();
// Prepare subtitles
CreateCopy();
SortLines();
//Merge(true,true,true);
provider->LoadSubtitles(GetAssFile());
// Write lines
using std::list;
int i = 0;
for (list<AssEntry*>::iterator cur=Line->begin();cur!=Line->end();cur++) {
AssDialogue *current = AssEntry::GetAsDialogue(*cur);
if (current) {
// Get the image
AegiVideoFrame dst;
dst.CopyFrom(srcFrame);
provider->DrawSubtitles(dst,current->Start.GetMS()/1000.0);
wxImage img = dst.GetImage();
dst.Clear();
// Perform colour reduction on image
unsigned char r,g,b;
unsigned char *data = img.GetData();
const unsigned char *dataRead = data;
unsigned char *dataWrite = data;
int startY = 0;
int endY;
int startX = w;
int endX = 0;
// For each line
for (int y=h;--y>=0;) {
bool hasData = false;
int lineStartX = 0;
int lineEndX;
// Scan line
for (int x=w;--x>=0;) {
// Read
r = *(dataRead++);
g = *(dataRead++);
b = *(dataRead++);
// Background
if (r > 127 && g < 20) {
r = 255;
g = 0;
b = 0;
}
// Text
else {
// Mark coordinates
hasData = true;
if (lineStartX == 0) lineStartX = w-x-1;
lineEndX = w-x-1;
// Set colour
if (r > 170 && g > 170) {
r = 255;
g = 255;
b = 255;
}
else if (r > 85 && g > 85) {
r = 127;
g = 127;
b = 127;
}
else {
r = 0;
g = 0;
b = 0;
}
}
// Write
*(dataWrite++) = r;
*(dataWrite++) = g;
*(dataWrite++) = b;
}
// Mark as last found so far
if (hasData) {
if (startY == 0) startY = h-y-1;
endY = h-y-1;
if (lineStartX < startX) startX = lineStartX;
if (lineEndX > endX) endX = lineEndX;
}
}
// Save image
img.GetSubImage(wxRect(startX,startY,endX-startX+1,endY-startY+1)).SaveFile(filename + wxString::Format(_T("%03i.png"),i));
i++;
}
}
// Clean up
delete provider;
srcFrame.Clear();
}