291 lines
6.9 KiB
C++
291 lines
6.9 KiB
C++
// Copyright (c) 2008, 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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// -----------------------------------------------------------------------------
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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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#pragma once
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///////////
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// Headers
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#include "subtitle_format_dvd.h"
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#include "video_provider_dummy.h"
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#include "subtitles_provider.h"
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#include "ass_dialogue.h"
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#include "ass_file.h"
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#ifdef _OPENMP
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#include <omp.h>
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#endif
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///////////////
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// Format name
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wxString DVDSubtitleFormat::GetName() {
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return _T("DVD Subpictures");
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}
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//////////////
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// Extensions
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wxArrayString DVDSubtitleFormat::GetWriteWildcards() {
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wxArrayString results;
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results.Add(_T("sup"));
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return results;
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}
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/////////////
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// Can write
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bool DVDSubtitleFormat::CanWriteFile(wxString filename) {
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return (filename.Lower().EndsWith(_T(".sup")));
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}
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///////////////////////
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// Get subpicture list
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void DVDSubtitleFormat::GetSubPictureList(std::vector<SubPicture> &pics) {
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// Create video frame
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int w = 720;
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int h = 480;
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VideoProvider *video = new DummyVideoProvider(10,1,w,h,wxColour(255,0,0),false);
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AegiVideoFrame srcFrame = video->GetFrame(0);
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delete video;
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// Prepare subtitles
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CreateCopy();
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SortLines();
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//Merge(true,true,true);
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// Count and index lines
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using std::list;
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int count = 0;
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std::vector<AssDialogue*> diags;
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for (list<AssEntry*>::iterator cur=Line->begin();cur!=Line->end();cur++) {
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AssDialogue *current = AssEntry::GetAsDialogue(*cur);
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if (current) {
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diags.push_back(current);
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count++;
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}
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}
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pics.resize(count);
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SubtitlesProvider *provider = NULL;
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provider = SubtitlesProviderFactory::GetProvider();
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provider->LoadSubtitles(GetAssFile());
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// Write lines
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int i;
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#pragma omp parallel for shared(diags,pics,provider) private(i)
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for (i=0;i<count;i++) {
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// Dialogue
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AssDialogue *current = diags[i];
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// Get the image
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AegiVideoFrame dst;
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dst.CopyFrom(srcFrame);
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double time = (current->Start.GetMS()/1000.0 + current->End.GetMS()/1000.0)/2.0;
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#pragma omp critical
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{
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provider->DrawSubtitles(dst,time);
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}
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wxImage img = dst.GetImage();
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dst.Clear();
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// Perform colour reduction on image
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unsigned char r,g,b;
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unsigned char *data = img.GetData();
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const unsigned char *dataRead = data;
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unsigned char *dataWrite = data;
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int startY = 0;
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int endY = 0;
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int startX = w;
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int endX = 0;
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// For each line
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for (int y=h;--y>=0;) {
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bool hasData = false;
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int lineStartX = 0;
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int lineEndX;
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// Scan line
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for (int x=w;--x>=0;) {
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// Read
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r = *(dataRead++);
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g = *(dataRead++);
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b = *(dataRead++);
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// Background
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if (r > 127 && g < 20) {
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r = 200;
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g = 0;
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b = 0;
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}
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// Text
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else {
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// Mark coordinates
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hasData = true;
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if (lineStartX == 0) lineStartX = w-x-1;
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lineEndX = w-x-1;
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// Set colour
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if (r > 170 && g > 170) {
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r = 255;
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g = 255;
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b = 255;
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}
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else if (r > 85 && g > 85) {
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r = 127;
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g = 127;
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b = 127;
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}
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else {
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r = 0;
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g = 0;
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b = 0;
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}
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}
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// Write
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*(dataWrite++) = r;
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*(dataWrite++) = g;
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*(dataWrite++) = b;
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}
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// Mark as last found so far
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if (hasData) {
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if (startY == 0) startY = h-y-1;
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endY = h-y-1;
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if (lineStartX < startX) startX = lineStartX;
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if (lineEndX > endX) endX = lineEndX;
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}
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}
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// Save image
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if (startX > endX) endX = startX;
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if (startY > endY) endY = startY;
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int sw = endX-startX+1;
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int sh = endY-startY+1;
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pics[i].x = startX;
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pics[i].y = startY;
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pics[i].w = sw;
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pics[i].h = sh;
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// RLE to memory
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for (int j=0;j<2;j++) {
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int curCol = -1;
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int col;
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int temp;
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int len = 0;
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dataRead = data + ((startY+j)*w+startX)*3;
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std::vector<RLEGroup> groups;
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groups.reserve(1024);
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// Read this scanline
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for (int y=startY+j;y<=endY;y+=2) {
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for (int x=startX;x<=endX;x++) {
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// Read current pixel colour
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temp = *dataRead;
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if (temp == 200) col = 0;
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else if (temp == 255) col = 1;
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else if (temp == 0) col = 2;
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else col = 3;
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// See if it matches
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if (col == curCol) {
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len++;
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if (len == 255) {
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if (len) groups.push_back(RLEGroup(curCol,len,false));
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len = 0;
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}
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}
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else {
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if (len) groups.push_back(RLEGroup(curCol,len,false));
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len = 1;
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curCol = col;
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}
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dataRead += 3;
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}
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// Flush
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if (len) groups.push_back(RLEGroup(curCol,0,true));
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else {
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groups.back().len = 0;
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groups.back().eol = true;
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}
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// Advance
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dataRead += (2*w-sw)*3;
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}
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// Encode into subpicture format
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int nibble[4];
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nibble[3] = 0;
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bool off = false;
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std::vector<unsigned char> &data = pics[i].data[j];
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unsigned char last = 0;
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for (size_t m=0;m<groups.size();m++) {
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int nibbles;
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if (groups[m].eol) nibbles = 4;
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else nibbles = groups[m].len >> 2;
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nibble[0] = groups[m].col | ((groups[m].len & 0x3) << 2);
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nibble[1] = (groups[m].len & 0x3C) >> 2;
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nibble[2] = (groups[m].len & 0xC0) >> 6;
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for (int n=0;n<nibbles;n++) {
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if (!off) {
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last = nibble[nibbles-n-1] << 4;
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data.push_back(last);
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}
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else data.back() = data.back() | last;
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off = !off;
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}
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}
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data.resize(data.size());
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}
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}
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// Clean up
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delete provider;
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srcFrame.Clear();
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}
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///////////////////////
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// Actually write them
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void DVDSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
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// Get subpictures
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std::vector<SubPicture> pics;
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GetSubPictureList(pics);
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}
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