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scale dvb subtitles

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git-svn-id: file:///home/bas/coolstream_public_svn/THIRDPARTY/applications/neutrino-experimental@216 e54a6e83-5905-42d5-8d5c-058d10e6a962
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2010-01-27 20:41:42 +00:00
parent 6e27f0c02b
commit f46f291ce9
2 changed files with 56 additions and 13 deletions
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66
lib/libdvbsub/dvbsubtitle.cpp
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@@ -30,9 +30,6 @@ static bool DebugConverter = true;
#define dbgconverter(a...) if (DebugConverter) sub_debug.print(Debug::VERBOSE, a)
extern unsigned char *simple_resize (unsigned char *orgin, int ox, int oy, int dx, int dy);
extern unsigned char *color_average_resize (unsigned char *orgin, int ox, int oy, int dx, int dy);
// --- cDvbSubtitleBitmaps ---------------------------------------------------
class cDvbSubtitleBitmaps : public cListObject
@@ -75,6 +72,32 @@ cDvbSubtitleBitmaps::~cDvbSubtitleBitmaps()
memset(&sub, 0, sizeof(AVSubtitle));
}
fb_pixel_t * simple_resize32(fb_pixel_t * orgin, int ox, int oy, int dx, int dy)
{
fb_pixel_t *cr,*p,*l;
int i,j,k,ip;
cr = (fb_pixel_t *) malloc(dx*dy*sizeof(fb_pixel_t));
if(cr == NULL) {
printf("Error: malloc\n");
return(orgin);
}
l = cr;
for(j = 0; j < dy; j++, l += dx)
{
p = orgin + (j*oy/dy*ox);
for(i = 0, k = 0; i < dx; i++, k++) {
ip = i*ox/dx;
l[k] = p[ip];
}
}
free(orgin);
return(cr);
}
void cDvbSubtitleBitmaps::Draw(int &min_x, int &min_y, int &max_x, int &max_y)
{
int i;
@@ -99,26 +122,49 @@ void cDvbSubtitleBitmaps::Draw(int &min_x, int &min_y, int &max_x, int &max_y)
sub.rects[i]->x, sub.rects[i]->y, sub.rects[i]->w, sub.rects[i]->h, sub.rects[i]->nb_colors, xoff, ys);
uint32_t * colors = (uint32_t *) sub.rects[i]->pict.data[1];
int width = sub.rects[i]->w;
int height = sub.rects[i]->h;
fb_pixel_t * data = (fb_pixel_t*) malloc(width*height*sizeof(fb_pixel_t));
fb_pixel_t * ptr = data;
for (int y2 = 0; y2 < sub.rects[i]->h; y2++) {
int y = y2*stride + yoff;
for (int x2 = 0; x2 < sub.rects[i]->w; x2++)
{
int idx = sub.rects[i]->pict.data[0][y2*sub.rects[i]->w+x2];// *(bitmaps[i]->Data(x2, y2));
int idx = sub.rects[i]->pict.data[0][y2*sub.rects[i]->w+x2];
if(idx > sub.rects[i]->nb_colors) {
dbgconverter("cDvbSubtitleBitmaps::Draw pixel at %d x %d is %d!\n", x2, y2, idx);
} else {
*(sublfb + xoff + x2 + y) = colors[idx];
*ptr++ = colors[idx];
}
}
}
int nw = (double) (width * (double) CFrameBuffer::getInstance()->getScreenWidth(true))/(double) 720;
int nh = (double) (height * (double) CFrameBuffer::getInstance()->getScreenHeight(true))/(double) 576;
dbgconverter("cDvbSubtitleBitmaps::Draw: %d x %d -> %d x %d\n", width, height, nw, nh);
fb_pixel_t * newdata = simple_resize32 (data, width, height, nw, nh);
xoff = 0;
ptr = newdata;
for (int y2 = 0; y2 < nh; y2++) {
int y = y2*stride + yoff;
for (int x2 = 0; x2 < nw; x2++)
{
*(sublfb + xoff + x2 + y) = *ptr++;
}
}
free(newdata);
if(min_x > xoff)
min_x = xoff;
if(min_y > ys)
min_y = ys;
if(max_x < (xoff + sub.rects[i]->w))
max_x = xoff + sub.rects[i]->w;
if(max_y < (ys + sub.rects[i]->h))
max_y = ys + sub.rects[i]->h;
if(max_x < (xoff + nw))
max_x = xoff + nw;
if(max_y < (ys + nh))
max_y = ys + nh;
}
if(Count())
dbgconverter("cDvbSubtitleBitmaps::Draw: finish, min/max screen: x=% d y= %d, w= %d, h= %d\n", min_x, min_y, max_x-min_x, max_y-min_y);