[MPlayer-dev-eng] aspect, panscan & co..

[Andrea Palmatè]

Hello,

i'm trying to implement the rescalin in my vo 
driver. i've seen that the others driver use 
aspect() function to rescale the image. i've seen 
that there isn't a doc in DOCS nor an example that use aspect functions..

ok, i've tried myself and i've put this..:

static int config(uint32_t width, uint32_t height, uint32_t d_width,
                      uint32_t d_height, uint32_t flags, char *title,
                      uint32_t format)
....

                 image_width = width;
                 image_height = height;
                 if (!vo_fs)
                 {
                         d_image_width = d_width;
                         d_image_height = d_height;
                 }
                 panscan_init();
                 aspect_save_orig(image_width,image_height);
                 aspect_save_prescale(d_image_width,d_image_height);
                 aspect_save_screenres(vo_screenwidth,vo_screenheight);
                 //aspect_save_screenres(d_image_width,d_image_height);
                 if (!vo_fs)
                 {
                         d_image_width = d_width;
                         d_image_height = d_height;
                         aspect(&d_image_width, &d_image_height, A_NOZOOM);
                         window_width = d_image_width;
                         window_height = d_image_height;
                 }
                 else
                 {
                         aspect(&d_image_width, &d_image_height, A_ZOOM);
                         panscan_calc();
                         d_image_width  += vo_panscan_x;
                         d_image_height += vo_panscan_y;
                         window_width = vo_screenwidth;
                         window_height = vo_screenheight;
                 }
                 internal_offset_x=(vo_screenwidth-d_image_width)/2;
                 internal_offset_y=(vo_screenheight-d_image_height)/2;
                 vo_dx= (( vo_screenwidth  - d_image_width  ) / 2);
                 vo_dy= (( vo_screenheight - d_image_height ) / 2);
                 geometry(&vo_dx, &vo_dy, 
&d_image_width, &d_image_height, vo_screenwidth, vo_screenheight);


now the result is that if i run mplayer in a 
window it scale the image correctly. if i use 
fullscreen it rescale the image correctly but if 
the video is 16:9 the rescale is wrong because it 
fill all screen with movie (not the 16:9 format effect). what's wrong?
Sometime i receive (this in fullscreen) the message:

swScaler: slices start in the middle

What is the exactly operation to do for scale image always well?
Thank you!


Andrea Palmatè
http://www.amigasoft.net