602 lines
17 KiB
C++
602 lines
17 KiB
C++
// Copyright (c) 2006, 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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///////////
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// Headers
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#include <wx/image.h>
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#include <wx/mstream.h>
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#include <wx/filename.h>
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#include <wx/docview.h>
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#include "subtitle_format_prs.h"
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#include "ass_file.h"
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#include "ass_dialogue.h"
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#include "ass_override.h"
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#include "avisynth_wrap.h"
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#include "video_box.h"
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#include "video_display.h"
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#include "video_provider.h"
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#include "main.h"
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#include "frame_main.h"
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#include "vfr.h"
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#include "utils.h"
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#include "md5.h"
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#include "dialog_progress.h"
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#include "../prs/prs_file.h"
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#include "../prs/prs_image.h"
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#include "../prs/prs_display.h"
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//////////////////////
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// Can write to file?
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bool PRSSubtitleFormat::CanWriteFile(wxString filename) {
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#ifdef __WINDOWS__
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return (filename.Right(4).Lower() == _T(".prs"));
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#else
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return false;
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#endif
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}
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//////////////
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// Write file
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void PRSSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
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#ifdef __WINDOWS__
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// Video loaded?
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VideoDisplay *display = ((AegisubApp*)wxTheApp)->frame->videoBox->videoDisplay;
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if (!display->loaded) throw _T("Video not loaded!");
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// Create the PRS file
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PRSFile file;
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// Open two Avisynth environments
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AviSynthWrapper avs1,avs2;
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IScriptEnvironment *env1 = avs1.GetEnv();
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IScriptEnvironment *env2 = avs2.GetEnv();
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// Prepare the Avisynth environments, that is, generate blank clips and hardsub into them
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wxString val = wxString::Format(_T("BlankClip(pixel_type=\"RGB32\",length=%i,width=%i,height=%i,fps=%f"),display->provider->GetFrameCount(),display->provider->GetSourceWidth(),display->provider->GetSourceHeight(),display->provider->GetFPS());
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AVSValue script1 = env1->Invoke("Eval",AVSValue(wxString(val + _T(",color=$000000)")).mb_str(wxConvUTF8)));
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AVSValue script2 = env2->Invoke("Eval",AVSValue(wxString(val + _T(",color=$FFFFFF)")).mb_str(wxConvUTF8)));
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char temp[512];
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strcpy(temp,display->GetTempWorkFile().mb_str(wxConvLocal));
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AVSValue args1[2] = { script1.AsClip(), temp };
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AVSValue args2[2] = { script2.AsClip(), temp };
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try {
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script1 = env1->Invoke("TextSub", AVSValue(args1,2));
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script2 = env2->Invoke("TextSub", AVSValue(args2,2));
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}
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catch (AvisynthError &err) {
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throw _T("AviSynth error: ") + wxString(err.msg,wxConvLocal);
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}
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PClip clip1 = script1.AsClip();
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PClip clip2 = script2.AsClip();
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// Get range
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std::vector<int> frames = GetFrameRanges();
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int totalFrames = frames.size();
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int toDraw = 0;
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for (int i=0;i<totalFrames;i++) {
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if (frames[i] == 2) toDraw++;
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}
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// Set variables
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id = 0;
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lastDisplay = NULL;
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optimizer = 1; // 0 = none, 1 = optipng, 2 = pngout
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// Progress
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bool canceled = false;
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DialogProgress *progress = new DialogProgress(NULL,_("Exporting PRS"),&canceled,_("Writing file"),0,toDraw);
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progress->Show();
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progress->SetProgress(0,toDraw);
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// Render all frames that were detected to contain subtitles
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int lastFrameDrawn = 0;
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int drawn = 0;
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for (int framen=0;framen<totalFrames;framen++) {
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// Canceled?
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if (canceled) break;
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// Is this frame supposed to be rendered?
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if (frames[framen] == 0) continue;
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// Update progress
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progress->SetProgress(drawn,toDraw);
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progress->SetText(wxString::Format(_T("Writing PRS file. Line: %i/%i"),framen,totalFrames));
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drawn++;
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// Read the frame image
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PVideoFrame frame1 = clip1->GetFrame(framen,env1);
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PVideoFrame frame2 = clip2->GetFrame(framen,env2);
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// Prepare to get wxImage
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int x=0,y=0;
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int maxalpha=0;
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// Get wxImage
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wxImage bmp = CalculateAlpha(frame1->GetReadPtr(),frame2->GetReadPtr(),frame1->GetRowSize(),frame1->GetHeight(),frame1->GetPitch(),&x,&y,&maxalpha);
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if (!bmp.Ok()) continue;
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lastFrameDrawn = framen;
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// Get the list of rectangles
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std::vector<wxRect> rects;
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GetSubPictureRectangles(bmp,rects);
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// Add each sub-image to file
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int nrects = rects.size();
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for (int i=0;i<nrects;i++) {
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// Pick either full image or subimage, as appropriate
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wxImage curImage;
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if (rects[i].x == 0 && rects[i].y == 0 && rects[i].width == bmp.GetWidth() && rects[i].height == bmp.GetHeight()) curImage = bmp;
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else curImage = SubImageWithAlpha(bmp,rects[i]);
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// Insert the image
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InsertFrame(file,framen,frames,curImage,x,y,maxalpha);
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}
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}
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// Destroy progress bar
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if (!canceled) progress->Destroy();
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else return;
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// Save file
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file.Save((const char*)filename.mb_str(wxConvLocal));
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// Test file
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PRSVideoFrame testFrame;
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file.DrawFrame(lastFrameDrawn,&testFrame);
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#endif
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}
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//////////////////////////
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// Insert frame into file
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void PRSSubtitleFormat::InsertFrame(PRSFile &file,int &framen,std::vector<int> &frames,wxImage &bmp,int x,int y,int maxalpha) {
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// Generic data holder
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size_t datasize = 0;
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char *rawData = NULL;
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std::vector<char> data;
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//bmp.SaveFile(wxString::Format(_T("test_%i.png"),id),wxBITMAP_TYPE_PNG);
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// pngout/optipng optimize
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if (optimizer) {
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// Get temporary filename
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wxString tempFile = wxFileName::CreateTempFileName(_T("aegiprs"));
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wxString tempOut = tempFile + _T("out.png");
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// Prepare arrays to capture output
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wxArrayString output;
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wxArrayString errors;
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// Generate the temporary PNG and run the optimizer program on it
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if (optimizer == 1) {
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bmp.SaveFile(tempOut,wxBITMAP_TYPE_PNG);
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wxExecute(AegisubApp::folderName + _T("optipng.exe -zc9 -zm8 -zs0-3 -f0 ") + tempOut,output,errors);
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}
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if (optimizer == 2) {
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bmp.SaveFile(tempFile,wxBITMAP_TYPE_PNG);
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wxExecute(AegisubApp::folderName + _T("pngout.exe ") + tempFile + _T(" ") + tempOut + _T(" /f0 /y /q"),output,errors);
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}
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// Read file back
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FILE *fp = fopen(tempOut.mb_str(wxConvLocal),"rb");
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fseek(fp,0,SEEK_END);
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datasize = ftell(fp);
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data.resize(datasize);
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rawData = &data[0];
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rewind(fp);
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fread(rawData,1,datasize,fp);
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fclose(fp);
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// Destroy temporary files
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wxRemoveFile(tempFile);
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wxRemoveFile(tempOut);
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}
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// No optimization (much faster)
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else {
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// Convert wxImage to PNG directly
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wxMemoryOutputStream stream;
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bmp.SaveFile(stream,wxBITMAP_TYPE_PNG);
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datasize = stream.GetSize();
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data.resize(datasize);
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rawData = &data[0];
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stream.CopyTo(rawData,datasize);
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}
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// Find start and end times
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int startf = framen;
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int totalFrames = frames.size();
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while (++framen<totalFrames && frames[framen] == 1);
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int endf = --framen;
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int start = VFR_Output.GetTimeAtFrame(startf,true);
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int end = VFR_Output.GetTimeAtFrame(endf,false);
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// Create PRSImage
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PRSImage *img = new PRSImage;
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img->id = id;
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img->imageType = PNG_IMG;
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img->w = bmp.GetWidth();
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img->h = bmp.GetHeight();
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img->maxAlpha = maxalpha;
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img->dataLen = datasize;
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img->data = new char[img->dataLen];
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memcpy(img->data,rawData,img->dataLen);
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// Hash the PRSImage data
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md5_state_t state;
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md5_init(&state);
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md5_append(&state,(md5_byte_t*)img->data,img->dataLen);
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md5_finish(&state,(md5_byte_t*)img->md5);
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// Check for duplicates
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PRSImage *dupe = file.FindDuplicateImage(img);
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int useID = id;
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// Dupe found, use that instead
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if (dupe) {
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useID = dupe->id;
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delete img;
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img = NULL;
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}
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// Frame is all OK, add it to file
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else {
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file.AddEntry(img);
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id++;
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}
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// Set blend data
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unsigned char alpha = 255;
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unsigned char blend = 0;
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// Check if it's just an extension of last display
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if (lastDisplay && lastDisplay->id == useID && lastDisplay->endFrame == startf-1 &&
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lastDisplay->x == x && lastDisplay->y == y && lastDisplay->alpha == alpha && lastDisplay->blend == blend)
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{
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lastDisplay->end = start;
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lastDisplay->endFrame = startf;
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}
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// It isn't; needs a new display command
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else {
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// Create PRSDisplay
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PRSDisplay *display = new PRSDisplay;
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display->start = start;
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display->end = end;
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display->startFrame = startf;
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display->endFrame = endf;
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display->id = useID;
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display->x = x;
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display->y = y;
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display->alpha = alpha;
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display->blend = blend;
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lastDisplay = display;
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// Insert into list
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file.AddEntry(display);
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}
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}
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///////////////////////////////////
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// Get rectangles of useful glyphs
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void PRSSubtitleFormat::GetSubPictureRectangles(wxImage image,std::vector<wxRect> &rects) {
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// Boundaries
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int w = image.GetWidth();
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int h = image.GetHeight();
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int startx = 0;
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int starty = 0;
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int endx = w-1;
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int endy = h-1;
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// Variables
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bool hasSubImage = false;
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bool isBlankRow = true;
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const unsigned char *data = image.GetAlpha();
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const unsigned char *src = data;
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unsigned char a;
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// For each row
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for (int y=0;y<=h;y++) {
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if (y < h) {
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// Reset row data
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isBlankRow = true;
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if (!hasSubImage) {
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startx = w;
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endx = -1;
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}
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// Check row
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for (int x=0;x<w;x++) {
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a = *src++;
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if (a) {
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isBlankRow = false;
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if (x < startx) startx = x;
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if (x > endx) endx = x;
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}
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}
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// Set sub image status
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if (!isBlankRow && !hasSubImage) {
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starty = y;
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hasSubImage = true;
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}
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}
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// If the processed row is totally blank and there is a subimage, separate them
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if ((isBlankRow && hasSubImage) || y == h) {
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// Insert rectangle
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endy = y-1;
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rects.push_back(wxRect(startx,starty,endx-startx+1,endy-starty+1));
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hasSubImage = false;
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}
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}
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}
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////////////////////
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// Get frame ranges
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std::vector<int> PRSSubtitleFormat::GetFrameRanges() {
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// Loop through subtitles in file
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AssFile *ass = AssFile::top;
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std::vector<int> frames;
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for (entryIter cur=ass->Line.begin();cur!=ass->Line.end();cur++) {
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AssDialogue *diag = AssEntry::GetAsDialogue(*cur);
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// Dialogue found
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if (diag) {
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// Parse tags
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diag->ParseASSTags();
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// Check if there is any animation tag, to flag the line as animated, forcing storage of every frame
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// THIS NEEDS OPTIMIZATION!
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// Currently it will redraw whole line, even if only some time of it is animated.
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// This is later hopefully removed by duplicate checker, but it would be faster if done here
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bool hasAnimation = false;
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int blocks = diag->Blocks.size();
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AssDialogueBlockOverride *block;
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for (int i=0;i<blocks;i++) {
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block = AssDialogueBlock::GetAsOverride(diag->Blocks[i]);
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if (block) {
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// Found an override block, see if it contains any animation tags
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int tags = block->Tags.size();
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for (int j=0;j<tags;j++) {
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wxString tagName = block->Tags[j]->Name;
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if (tagName == _T("\\t") || tagName == _T("\\move") || tagName == _T("\\k") || tagName == _T("\\K") ||
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tagName == _T("\\kf") || tagName == _T("\\ko") || tagName == _T("\\fad") || tagName == _T("\\fade")) {
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hasAnimation = true;
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}
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}
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}
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}
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// Calculate start and end times
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size_t start = VFR_Output.GetFrameAtTime(diag->Start.GetMS(),true);
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size_t end = VFR_Output.GetFrameAtTime(diag->End.GetMS(),false);
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// Ensure that the vector is long enough
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if (frames.size() <= end) frames.resize(end+1);
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// Fill data
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// 2 = Store this frame
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// 1 = Repeat last frame
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// 0 = Don't store this frame
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bool lastOn = false;
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for (size_t i=start;i<=end;i++) {
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// Put a keyframe at the very start, or everywhere if it's animated
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if (i == start || hasAnimation) frames[i] = 2;
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else {
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// Already set to 1 or 2, meaning that another subtitle is here already
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if (frames[i] != 0) lastOn = true;
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// Set to 0, so nothing is here
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else {
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// Just came out of a subtitle end, put a keyframe here
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if (lastOn) {
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frames[i] = 2;
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lastOn = false;
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}
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// Otherwise, just repeat
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frames[i] = 1;
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}
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}
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}
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// Clean up
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diag->ClearBlocks();
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}
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}
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// Done
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return frames;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// TODO!! MOVE THE TWO FUNCTIONS BELOW INTO A CLASS OF THEIR OWN, THEY MIGHT FIND USE ELSEWHERE. //
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// Obvious choice would be the subtitles_rasterizer.h derivation for vsfilter, when that exists. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////
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// Generates a 32-bit wxImage from two frames
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// ------------------------------------------
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// Frame 1 should have the image on a BLACK background
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// Frame 2 should have the same image on a WHITE background
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wxImage PRSSubtitleFormat::CalculateAlpha(const unsigned char* frame1, const unsigned char* frame2, int w, int h, int pitch, int *dstx, int *dsty, int *maxalpha) {
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// Allocate image data
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unsigned char *data = (unsigned char*) malloc(sizeof(unsigned char)*w*h*3);
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unsigned char *alpha = (unsigned char*) malloc(sizeof(unsigned char)*w*h);
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// Pointers
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const unsigned char *src1 = frame1;
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const unsigned char *src2 = frame2;
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unsigned char *dst = data + ((h-1)*w*3/4);
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unsigned char *dsta = alpha + ((h-1)*w/4);
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// Boundaries
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int minx = w;
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int miny = h;
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int maxx = 0;
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int maxy = 0;
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// Process
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int maxA = 0;
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unsigned char r1,g1,b1,r2,g2,b2;
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unsigned char r,g,b,a;
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for (int y=h;--y>=0;) {
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for (int x=0;x<w;x+=4) {
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// Read pixels
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b1 = *(src1++);
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b2 = *(src2++);
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g1 = *(src1++);
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g2 = *(src2++);
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r1 = *(src1++);
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r2 = *(src2++);
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src1++;
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src2++;
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// Calculate new values
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a = 255 + r1 - r2;
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if (a == 0) {
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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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else {
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// Update range
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if (x < minx) minx = x;
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else if (x > maxx) maxx = x;
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|
if (y < miny) miny = y;
|
|
else if (y > maxy) maxy = y;
|
|
|
|
// Calculate colour components
|
|
int mod = MAX(0,128/a-1);
|
|
r = MAX(0,r1-mod)*255 / a;
|
|
g = MAX(0,g1-mod)*255 / a;
|
|
b = MAX(0,b1-mod)*255 / a;
|
|
}
|
|
|
|
// Write to destination
|
|
*(dst++) = r;
|
|
*(dst++) = g;
|
|
*(dst++) = b;
|
|
*(dsta++) = a;
|
|
|
|
// Store maximum alpha
|
|
if (a > maxA) maxA = a;
|
|
}
|
|
|
|
// Roll back dst
|
|
dst -= w*3/2;
|
|
dsta -= w/2;
|
|
}
|
|
|
|
// Store maximum alpha
|
|
if (maxalpha) *maxalpha = maxA;
|
|
|
|
// Calculate sizes
|
|
minx /= 4;
|
|
maxx /= 4;
|
|
if (dstx) *dstx = minx;
|
|
if (dsty) *dsty = miny;
|
|
int width = maxx-minx+1;
|
|
int height = maxy-miny+1;
|
|
|
|
// 100% transparent image; clean up and return an empty one
|
|
if (width <= 0 || height <= 0) {
|
|
delete [] data;
|
|
delete [] alpha;
|
|
return wxImage();
|
|
}
|
|
|
|
// Create the actual image
|
|
wxImage img(w/4,h,data,false);
|
|
img.SetAlpha(alpha,false);
|
|
|
|
// Return subimage
|
|
wxImage subimg = SubImageWithAlpha(img,wxRect(minx,miny,width,height));
|
|
return subimg;
|
|
}
|
|
|
|
|
|
////////////////////////////////////////////////
|
|
// Creates a sub image preserving alpha channel
|
|
// Modified from wx's source
|
|
wxImage PRSSubtitleFormat::SubImageWithAlpha (wxImage source,const wxRect &rect) {
|
|
wxImage image;
|
|
wxCHECK_MSG(source.Ok(), image, wxT("invalid image") );
|
|
wxCHECK_MSG((rect.GetLeft()>=0) && (rect.GetTop()>=0) && (rect.GetRight()<=source.GetWidth()) && (rect.GetBottom()<=source.GetHeight()), image, wxT("invalid subimage size") );
|
|
|
|
int subwidth=rect.GetWidth();
|
|
const int subheight=rect.GetHeight();
|
|
|
|
image.Create(subwidth, subheight, false);
|
|
|
|
image.SetAlpha();
|
|
unsigned char *subdata = image.GetData();
|
|
unsigned char *data = source.GetData();
|
|
unsigned char *subalpha = image.GetAlpha();
|
|
unsigned char *alpha = source.GetAlpha();
|
|
|
|
wxCHECK_MSG(subdata, image, wxT("unable to create image"));
|
|
|
|
const int subleft=3*rect.GetLeft();
|
|
const int width=3*source.GetWidth();
|
|
const int afullwidth=source.GetWidth();
|
|
int awidth = subwidth;
|
|
subwidth*=3;
|
|
|
|
data+=rect.GetTop()*width+subleft;
|
|
alpha+=rect.GetTop()*afullwidth+rect.GetLeft();
|
|
|
|
for (long j = 0; j < subheight; ++j) {
|
|
memcpy(subdata, data, subwidth);
|
|
memcpy(subalpha, alpha, awidth);
|
|
subdata+=subwidth;
|
|
subalpha+=awidth;
|
|
data+=width;
|
|
alpha+=afullwidth;
|
|
}
|
|
|
|
return image;
|
|
}
|