me option implemented as an AVOption

patch by Stefano Sabatini: [stefano sabatini-lala poste it]
original thread:
[FFmpeg-devel] [PATCH] ffmpeg.c -me option implemented as an AVOption
date: 07/05/2007 03:12 PM

Originally committed as revision 9501 to svn://svn.ffmpeg.org/ffmpeg/trunk

doc/ffmpeg-doc.texi

@@ -468,7 +468,7 @@ Set rate control equation (@pxref{FFmpeg formula
 evaluator}) (default = @code{tex^qComp}).
 @item -rc_override override
 rate control override for specific intervals
-@item -me method
+@item -me_method method
 Set motion estimation method to @var{method}.
 Available methods are (from lowest to best quality):
 @table @samp
@@ -477,6 +477,8 @@ Try just the (0, 0) vector.
 @item phods
 @item log
 @item x1
+@item hex
+@item umh
 @item epzs
 (default method)
 @item full

ffmpeg.c

@@ -127,7 +127,6 @@ static int video_rc_qmod_freq=0;
 #endif
 static char *video_rc_override_string=NULL;
 static char *video_rc_eq="tex^qComp";
-static int me_method = ME_EPZS;
 static int video_disable = 0;
 static int video_discard = 0;
 static int video_codec_id = CODEC_ID_NONE;
@@ -2417,35 +2416,6 @@ static void add_frame_hooker(const char *arg)
     }
 }
 
-const char *motion_str[] = {
-    "zero",
-    "full",
-    "log",
-    "phods",
-    "epzs",
-    "x1",
-    "hex",
-    "umh",
-    "iter",
-    NULL,
-};
-
-static void opt_motion_estimation(const char *arg)
-{
-    const char **p;
-    p = motion_str;
-    for(;;) {
-        if (!*p) {
-            fprintf(stderr, "Unknown motion estimation method '%s'\n", arg);
-            exit(1);
-        }
-        if (!strcmp(*p, arg))
-            break;
-        p++;
-    }
-    me_method = (p - motion_str) + 1;
-}
-
 static void opt_video_codec(const char *arg)
 {
     opt_codec(&video_stream_copy, &video_codec_id, CODEC_TYPE_VIDEO, arg);
@@ -2839,8 +2809,6 @@ static void new_video_stream(AVFormatContext *oc)
         if (do_psnr)
             video_enc->flags|= CODEC_FLAG_PSNR;
 
-        video_enc->me_method = me_method;
-
         /* two pass mode */
         if (do_pass) {
             if (do_pass == 1) {
@@ -3167,7 +3135,7 @@ static void show_formats(void)
     AVOutputFormat *ofmt;
     URLProtocol *up;
     AVCodec *p, *p2;
-    const char **pp, *last_name;
+    const char *last_name;
 
     printf("File formats:\n");
     last_name= "000";
@@ -3268,19 +3236,7 @@ static void show_formats(void)
     printf("\n");
 
     printf("Frame size, frame rate abbreviations:\n ntsc pal qntsc qpal sntsc spal film ntsc-film sqcif qcif cif 4cif\n");
-    printf("Motion estimation methods:\n");
+    printf("\n");
-    pp = motion_str;
-    while (*pp) {
-        printf(" %s", *pp);
-        if ((pp - motion_str + 1) == ME_ZERO)
-            printf("(fastest)");
-        else if ((pp - motion_str + 1) == ME_FULL)
-            printf("(slowest)");
-        else if ((pp - motion_str + 1) == ME_EPZS)
-            printf("(default)");
-        pp++;
-    }
-    printf("\n\n");
     printf(
 "Note, the names of encoders and decoders do not always match, so there are\n"
 "several cases where the above table shows encoder only or decoder only entries\n"
@@ -3633,8 +3589,6 @@ const OptionDef options[] = {
     { "rc_eq", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_eq}, "set rate control equation", "equation" },
     { "rc_override", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_video_rc_override_string}, "rate control override for specific intervals", "override" },
     { "vcodec", HAS_ARG | OPT_VIDEO, {(void*)opt_video_codec}, "force video codec ('copy' to copy stream)", "codec" },
-    { "me", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_motion_estimation}, "set motion estimation method",
-      "method" },
     { "me_threshold", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_me_threshold}, "motion estimaton threshold",  "" },
     { "strict", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_strict}, "how strictly to follow the standards", "strictness" },
     { "sameq", OPT_BOOL | OPT_VIDEO, {(void*)&same_quality},

libavcodec/utils.c

@@ -455,6 +455,18 @@ static const AVOption options[]={
 {"local_header", "place global headers at every keyframe instead of in extradata", 0, FF_OPT_TYPE_CONST, CODEC_FLAG2_LOCAL_HEADER, INT_MIN, INT_MAX, V|E, "flags2"},
 {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"me_method", "set motion estimation method", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
+#if LIBAVCODEC_VERSION_INT < ((52<<16)+(0<<8)+0)
+{"me", "set motion estimation method (deprecated, use me_method instead)", OFFSET(me_method), FF_OPT_TYPE_INT, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method"},
+#endif
+{"zero", "zero motion estimation (fastest)", 0, FF_OPT_TYPE_CONST, ME_ZERO, INT_MIN, INT_MAX, V|E, "me_method" },
+{"full", "full motion estimation (slowest)", 0, FF_OPT_TYPE_CONST, ME_FULL, INT_MIN, INT_MAX, V|E, "me_method" },
+{"epzs", "EPZS motion estimation (default)", 0, FF_OPT_TYPE_CONST, ME_EPZS, INT_MIN, INT_MAX, V|E, "me_method" },
+{"log", "log motion estimation", 0, FF_OPT_TYPE_CONST, ME_LOG, INT_MIN, INT_MAX, V|E, "me_method" },
+{"phods", "phods motion estimation", 0, FF_OPT_TYPE_CONST, ME_PHODS, INT_MIN, INT_MAX, V|E, "me_method" },
+{"x1", "X1 motion estimation", 0, FF_OPT_TYPE_CONST, ME_X1, INT_MIN, INT_MAX, V|E, "me_method" },
+{"hex", "hex motion estimation", 0, FF_OPT_TYPE_CONST, ME_HEX, INT_MIN, INT_MAX, V|E, "me_method" },
+{"umh", "umh motion estimation", 0, FF_OPT_TYPE_CONST, ME_UMH, INT_MIN, INT_MAX, V|E, "me_method" },
+{"iter", "iter motion estimation", 0, FF_OPT_TYPE_CONST, ME_ITER, INT_MIN, INT_MAX, V|E, "me_method" },
 {"extradata_size", NULL, OFFSET(extradata_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"time_base", NULL, OFFSET(time_base), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
 {"g", "set the group of picture size", OFFSET(gop_size), FF_OPT_TYPE_INT, 12, INT_MIN, INT_MAX, V|E},