New aspect prescale code, parses aspect value from mpeg sequence header or commandline.

Removed X11_FULLSCREEN hack from mplayer.c and moved it to libvo/vo_xv.c.
Added support for nominator[:/]denominator float values in cfg-parser, thanks for the code by Steve Davies.
All around thanks to Steve for helping me understanding the whole stuff :)


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@2032 b3059339-0415-0410-9bf9-f77b7e298cf2

cfg-mplayer.h

@@ -210,6 +210,7 @@ struct config conf[]={
 	{"x", &screen_size_x, CONF_TYPE_INT, CONF_RANGE, 0, 4096},
 	{"y", &screen_size_y, CONF_TYPE_INT, CONF_RANGE, 0, 4096},
 	{"xy", &screen_size_xy, CONF_TYPE_INT, CONF_RANGE, 0, 4096},
+	{"aspect", &movie_aspect, CONF_TYPE_FLOAT, CONF_RANGE, 0.2, 3.0},
         {"vm", &vidmode, CONF_TYPE_FLAG, 0, 0, 1},
         {"novm", &vidmode, CONF_TYPE_FLAG, 0, 1, 0},
 	{"fs", &fullscreen, CONF_TYPE_FLAG, 0, 0, 1},

cfgparser.c

@@ -152,8 +152,14 @@ static int read_option(char *opt, char *param)
 				goto err_missing_param;
 
 			tmp_float = strtod(param, &endptr);
+
+			if ((*endptr == ':') || (*endptr == '/'))
+				tmp_float /= strtod(endptr+1, &endptr);
+
 			if (*endptr) {
-				printf("parameter must be a floating point number:\n");
+				printf("parameter must be a floating point number"
+				       " or a ratio (numerator[:/]denominator):\n");
+
 				ret = ERR_MISSING_PARAM;
 				goto out;
 			}

dec_video.c

@@ -673,6 +673,26 @@ switch(d_video->demuxer->file_format){
       return 0;
     }
    }
+   // fill aspect info:
+   switch(picture->aspect_ratio_information){
+     case 2:  // PAL/NTSC SVCD/DVD 4:3
+     case 8:  // PAL VCD 4:3
+     case 12: // NTSC VCD 4:3
+       sh_video->aspect=4.0/3.0;
+     break;
+     case 3:  // PAL/NTSC Widescreen SVCD/DVD 16:9
+       sh_video->aspect=16.0/9.0;
+     break;
+     default:
+       fprintf(stderr,"Detected unknown aspect_ratio_information in mpeg sequence header.\n"
+               "Please report the aspect value (%i) along with the movie type (VGA,PAL,NTSC,"
+               "SECAM) and the movie resolution (720x576,352x240,480x480,...) to the MPlayer"
+               " developers, so that we can add support for it!\nAssuming 1:1 aspect for now.\n",
+               picture->aspect_ratio_information);
+     case 1:  // VGA 1:1
+       sh_video->aspect=1.0;
+     break;
+   }
    // display info:
    sh_video->format=picture->mpeg1?0x10000001:0x10000002; // mpeg video
    sh_video->fps=frameratecode2framerate[picture->frame_rate_code]*0.0001f;

libvo/vo_xv.c

@@ -158,6 +158,25 @@ static uint32_t init(uint32_t width, uint32_t height, uint32_t d_width, uint32_t
     {
      hint.width=vo_screenwidth;
      hint.height=vo_screenheight;
+     /* this code replaces X11_FULLSCREEN hack in mplayer.c
+      * with libvo2 this should be unified among vo plugins
+      * besides zooming should only be done with -zoom,
+      * but I leave the old -fs behaviour so users don't get
+      * irritated for now (and send lots o' mails ;) ::atmos
+      */
+
+#ifdef X11_FULLSCREEN
+     d_height=(int)((float)vo_screenwidth/(float)dwidth*(float)dheight);
+     d_height+=d_height%2; // round
+     d_width=vo_screenwidth;
+     if(dheight>vo_screenheight){
+       d_width=(int)((float)vo_screenheight/(float)dheight*(float)dwidth);
+       d_width+=d_width%2; // round
+       d_height=vo_screenheight;
+     }
+     dwidth=d_width; dheight=d_height;
+#endif
+
     }
    hint.flags = PPosition | PSize;
    XGetWindowAttributes(mDisplay, DefaultRootWindow(mDisplay), &attribs);

stheader.h

@@ -75,6 +75,7 @@ typedef struct {
   int i_bps; // == bitrate  (compressed bytes/sec)
   int disp_w,disp_h;   // display size (filled by fileformat parser)
 //  int coded_w,coded_h; // coded size (filled by video codec)
+  float aspect;
   unsigned int outfmtidx;
 //  unsigned int bitrate;
   // buffers: