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dvbsub: fix scaling

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Scale subtitles to full FB size, disregard OSD setup area. Reason: the
video decoder plane also does not consider OSD setup and subtitles
should align with video. Additionally, subtitles were too narrow.
TODO: what about letterboxed formats? Not handled yet.

Code is experimental, thus the original is #if 0'ed out only.


Origin commit data
------------------
Branch: ni/coolstream
Commit: b6eb045c9b
Author: Stefan Seyfried <seife@tuxbox-git.slipkontur.de>
Date: 2012-03-14 (Wed, 14 Mar 2012)



------------------
This commit was generated by Migit
This commit is contained in:
Stefan Seyfried
2012-03-14 19:49:59 +01:00
parent 17eaf977c7
commit 03bb623280
1 changed files with 11 additions and 0 deletions
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11
lib/libdvbsub/dvbsubtitle.cpp
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@@ -110,10 +110,14 @@ void cDvbSubtitleBitmaps::Draw(int &min_x, int &min_y, int &max_x, int &max_y)
// dbgconverter("cDvbSubtitleBitmaps::Draw: %d bitmaps, x= %d, width= %d yend=%d stride %d\n", Count(), xstart, wd, yend, stride);
int sw = CFrameBuffer::getInstance()->getScreenWidth(true);
int sh = CFrameBuffer::getInstance()->getScreenHeight(true);
#if 0
double xc = (double) CFrameBuffer::getInstance()->getScreenWidth(true)/(double) 720;
double yc = (double) CFrameBuffer::getInstance()->getScreenHeight(true)/(double) 576;
xc = yc; //FIXME should we scale also to full width ?
int xf = xc * (double) 720;
#endif
for (i = 0; i < Count(); i++) {
uint32_t * colors = (uint32_t *) sub.rects[i]->pict.data[1];
@@ -121,6 +125,7 @@ void cDvbSubtitleBitmaps::Draw(int &min_x, int &min_y, int &max_x, int &max_y)
int height = sub.rects[i]->h;
int xoff, yoff;
#if 0
int nw = width == 1280 ? ((double) width / xc) : ((double) width * xc);
int nh = (double) height * yc;
@@ -133,6 +138,12 @@ void cDvbSubtitleBitmaps::Draw(int &min_x, int &min_y, int &max_x, int &max_y)
if(yoff < ystart)
yoff = ystart;
}
#endif
int h2 = (width == 1280) ? 720 : 576;
xoff = sub.rects[i]->x * sw / width;
yoff = sub.rects[i]->y * sh / h2;
int nw = width * sw / width;
int nh = height * sh / h2;
// dbgconverter("cDvbSubtitleBitmaps::Draw: #%d at %d,%d size %dx%d colors %d (x=%d y=%d w=%d h=%d) \n", i+1,
// sub.rects[i]->x, sub.rects[i]->y, sub.rects[i]->w, sub.rects[i]->h, sub.rects[i]->nb_colors, xoff, yoff, nw, nh);