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ffplay: factor display rectangle calculation to its own function

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Signed-off-by: Marton Balint <cus@passwd.hu>
This commit is contained in:
Marton Balint 2012-09-01 14:35:00 +02:00
parent 34b5b735f9
commit bd14d845e9
1 changed files with 30 additions and 25 deletions
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55
ffplay.c
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@ -685,27 +685,45 @@ static void free_subpicture(SubPicture *sp)
avsubtitle_free(&sp->sub);
}
static void calculate_display_rect(SDL_Rect *rect, int scr_xleft, int scr_ytop, int scr_width, int scr_height, VideoPicture *vp)
{
float aspect_ratio;
int width, height, x, y;
if (vp->sample_aspect_ratio.num == 0)
aspect_ratio = 0;
else
aspect_ratio = av_q2d(vp->sample_aspect_ratio);
if (aspect_ratio <= 0.0)
aspect_ratio = 1.0;
aspect_ratio *= (float)vp->width / (float)vp->height;
/* XXX: we suppose the screen has a 1.0 pixel ratio */
height = scr_height;
width = ((int)rint(height * aspect_ratio)) & ~1;
if (width > scr_width) {
width = scr_width;
height = ((int)rint(width / aspect_ratio)) & ~1;
}
x = (scr_width - width) / 2;
y = (scr_height - height) / 2;
rect->x = scr_xleft + x;
rect->y = scr_ytop + y;
rect->w = FFMAX(width, 1);
rect->h = FFMAX(height, 1);
}
static void video_image_display(VideoState *is)
{
VideoPicture *vp;
SubPicture *sp;
AVPicture pict;
float aspect_ratio;
int width, height, x, y;
SDL_Rect rect;
int i;
vp = &is->pictq[is->pictq_rindex];
if (vp->bmp) {
if (vp->sample_aspect_ratio.num == 0)
aspect_ratio = 0;
else
aspect_ratio = av_q2d(vp->sample_aspect_ratio);
if (aspect_ratio <= 0.0)
aspect_ratio = 1.0;
aspect_ratio *= (float)vp->width / (float)vp->height;
if (is->subtitle_st) {
if (is->subpq_size > 0) {
sp = &is->subpq[is->subpq_rindex];
@ -730,21 +748,8 @@ static void video_image_display(VideoState *is)
}
}
calculate_display_rect(&rect, is->xleft, is->ytop, is->width, is->height, vp);
/* XXX: we suppose the screen has a 1.0 pixel ratio */
height = is->height;
width = ((int)rint(height * aspect_ratio)) & ~1;
if (width > is->width) {
width = is->width;
height = ((int)rint(width / aspect_ratio)) & ~1;
}
x = (is->width - width) / 2;
y = (is->height - height) / 2;
is->no_background = 0;
rect.x = is->xleft + x;
rect.y = is->ytop + y;
rect.w = FFMAX(width, 1);
rect.h = FFMAX(height, 1);
SDL_DisplayYUVOverlay(vp->bmp, &rect);
}
}