ffplay: remove explicit idct option

this allows named idct options to be used
Reviewed-by: Marton Balint <cus@passwd.hu>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

ffplay.c

@@ -305,7 +305,6 @@ static int workaround_bugs = 1;
 static int fast = 0;
 static int genpts = 0;
 static int lowres = 0;
-static int idct = FF_IDCT_AUTO;
 static int error_concealment = 3;
 static int decoder_reorder_pts = -1;
 static int autoexit;
@@ -2480,7 +2479,6 @@ static int stream_component_open(VideoState *is, int stream_index)
                 codec->max_lowres);
         avctx->lowres= codec->max_lowres;
     }
-    avctx->idct_algo         = idct;
     avctx->error_concealment = error_concealment;
 
     if(avctx->lowres) avctx->flags |= CODEC_FLAG_EMU_EDGE;
@@ -3402,7 +3400,6 @@ static const OptionDef options[] = {
     { "genpts", OPT_BOOL | OPT_EXPERT, { &genpts }, "generate pts", "" },
     { "drp", OPT_INT | HAS_ARG | OPT_EXPERT, { &decoder_reorder_pts }, "let decoder reorder pts 0=off 1=on -1=auto", ""},
     { "lowres", OPT_INT | HAS_ARG | OPT_EXPERT, { &lowres }, "", "" },
-    { "idct", OPT_INT | HAS_ARG | OPT_EXPERT, { &idct }, "set idct algo",  "algo" },
     { "ec", OPT_INT | HAS_ARG | OPT_EXPERT, { &error_concealment }, "set error concealment options",  "bit_mask" },
     { "sync", HAS_ARG | OPT_EXPERT, { .func_arg = opt_sync }, "set audio-video sync. type (type=audio/video/ext)", "type" },
     { "autoexit", OPT_BOOL | OPT_EXPERT, { &autoexit }, "exit at the end", "" },