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Sub-image splitting for PRS implemented

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Originally committed to SVN as r271.
This commit is contained in:
Rodrigo Braz Monteiro 2006-04-01 00:16:52 +00:00
parent 578d7c72a1
commit 5b74fb816e
1 changed files with 57 additions and 3 deletions
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60
core/subtitle_format_prs.cpp
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@ -118,13 +118,17 @@ void PRSSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
optimizer = 0; // 0 = none, 1 = optipng, 2 = pngout
// Progress
DialogProgress *progress = new DialogProgress(NULL,_("Exporting PRS"),NULL,_("Writing file"),0,toDraw);
bool canceled = false;
DialogProgress *progress = new DialogProgress(NULL,_("Exporting PRS"),&canceled,_("Writing file"),0,toDraw);
progress->Show();
progress->SetProgress(0,toDraw);
// Render all frames that were detected to contain subtitles
int drawn = 0;
for (int framen=0;framen<totalFrames;framen++) {
// Canceled?
if (canceled) break;
// Is this frame supposed to be rendered?
if (frames[framen] == 0) continue;
@ -163,7 +167,8 @@ void PRSSubtitleFormat::WriteFile(wxString filename,wxString encoding) {
}
// Destroy progress bar
progress->Destroy();
if (!canceled) progress->Destroy();
else return;
// Save file
file.Save((const char*)filename.mb_str(wxConvLocal));
@ -304,7 +309,56 @@ void PRSSubtitleFormat::InsertFrame(PRSFile &file,int &framen,std::vector<int> &
///////////////////////////////////
// Get rectangles of useful glyphs
void PRSSubtitleFormat::GetSubPictureRectangles(wxImage image,std::vector<wxRect> &rects) {
rects.push_back(wxRect(0,0,image.GetWidth(),image.GetHeight()));
// Boundaries
int w = image.GetWidth();
int h = image.GetHeight();
int startx = 0;
int starty = 0;
int endx = w-1;
int endy = h-1;
// Variables
bool hasSubImage = false;
bool isBlankRow = true;
const unsigned char *data = image.GetAlpha();
const unsigned char *src = data;
unsigned char a;
// For each row
for (int y=0;y<=h;y++) {
if (y < h) {
// Reset row data
isBlankRow = true;
if (!hasSubImage) {
startx = w;
endx = -1;
}
// Check row
for (int x=0;x<w;x++) {
a = *src++;
if (a) {
isBlankRow = false;
if (x < startx) startx = x;
if (x > endx) endx = x;
}
}
// Set sub image status
if (!isBlankRow && !hasSubImage) {
starty = y;
hasSubImage = true;
}
}
// If the processed row is totally blank and there is a subimage, separate them
if ((isBlankRow && hasSubImage) || y == h) {
// Insert rectangle
endy = y-1;
rects.push_back(wxRect(startx,starty,endx-startx+1,endy-starty+1));
hasSubImage = false;
}
}
}