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Code Issues Releases Activity

Scale subtitle position

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Originally committed as revision 10021 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Reimar Döffinger 2007-08-09 16:45:59 +00:00
parent 874abace12
commit 3af56110d4
1 changed files with 11 additions and 4 deletions
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15
ffplay.c
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@ -422,7 +422,8 @@ void fill_border(VideoState *s, int x, int y, int w, int h, int color)
#define BPP 1
static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh)
static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw, int imgh,
float scalex, float scaley)
{
int wrap, wrap3, width2, skip2;
int y, u, v, a, u1, v1, a1, w, h;
@ -431,9 +432,9 @@ static void blend_subrect(AVPicture *dst, const AVSubtitleRect *rect, int imgw,
const uint32_t *pal;
int dstx, dsty, dstw, dsth;
dstx = FFMIN(FFMAX(rect->x, 0), imgw);
dstx = FFMIN(scalex * FFMAX(rect->x, 0), imgw);
dstw = FFMIN(FFMAX(rect->w, 0), imgw - dstx);
dsty = FFMIN(FFMAX(rect->y, 0), imgh);
dsty = FFMIN(scaley * FFMAX(rect->y, 0), imgh);
dsth = FFMIN(FFMAX(rect->h, 0), imgh - dsty);
lum = dst->data[0] + dsty * dst->linesize[0];
cb = dst->data[1] + (dsty >> 1) * dst->linesize[1];
@ -699,6 +700,7 @@ static void video_image_display(VideoState *is)
if (vp->pts >= sp->pts + ((float) sp->sub.start_display_time / 1000))
{
float scalex = 1, scaley = 1;
SDL_LockYUVOverlay (vp->bmp);
pict.data[0] = vp->bmp->pixels[0];
@ -709,9 +711,14 @@ static void video_image_display(VideoState *is)
pict.linesize[1] = vp->bmp->pitches[2];
pict.linesize[2] = vp->bmp->pitches[1];
if (is->subtitle_st->codec->width)
scalex = (float)vp->bmp->w / is->subtitle_st->codec->width;
if (is->subtitle_st->codec->height)
scaley = (float)vp->bmp->h / is->subtitle_st->codec->height;
for (i = 0; i < sp->sub.num_rects; i++)
blend_subrect(&pict, &sp->sub.rects[i],
vp->bmp->w, vp->bmp->h);
vp->bmp->w, vp->bmp->h,
scalex, scaley);
SDL_UnlockYUVOverlay (vp->bmp);
}