AVOption API improvments

support AVOptions for encoding in ffmpeg.c

Originally committed as revision 4580 to svn://svn.ffmpeg.org/ffmpeg/trunk

6 files changed, 283 insertions, 169 deletions

diff --git a/cmdutils.c b/cmdutils.c
index 955b485ee8..0f3747eab6 100644
--- a/cmdutils.c
+++ b/cmdutils.c
@@ -45,6 +45,15 @@ void show_help_options(const OptionDef *options, const char *msg, int mask, int
     }
 }
 
+static OptionDef* find_option(const OptionDef *po, const char *name){
+    while (po->name != NULL) {
+        if (!strcmp(name, po->name))
+            break;
+        po++;
+    }
+    return po;
+}
+
 void parse_options(int argc, char **argv, const OptionDef *options)
 {
     const char *opt, *arg;
@@ -57,13 +66,11 @@ void parse_options(int argc, char **argv, const OptionDef *options)
         opt = argv[optindex++];
         
         if (opt[0] == '-' && opt[1] != '\0') {
-            po = options;
-            while (po->name != NULL) {
-                if (!strcmp(opt + 1, po->name))
-                    break;
-                po++;
-            }
+            po= find_option(options, opt + 1);
+            if (!po->name)
+                po= find_option(options, "default");
             if (!po->name) {
+unknown_opt:
                 fprintf(stderr, "%s: unrecognized option '%s'\n", argv[0], opt);
                 exit(1);
             }
@@ -85,6 +92,9 @@ void parse_options(int argc, char **argv, const OptionDef *options)
                 *po->u.int_arg = atoi(arg);
             } else if (po->flags & OPT_FLOAT) {
                 *po->u.float_arg = atof(arg);
+            } else if (po->flags & OPT_FUNC2) {
+                if(po->u.func2_arg(opt+1, arg)<0)
+                    goto unknown_opt;
             } else {
 		po->u.func_arg(arg);
             }
diff --git a/cmdutils.h b/cmdutils.h
index 8aeec3d214..d9c66f015e 100644
--- a/cmdutils.h
+++ b/cmdutils.h
@@ -14,11 +14,13 @@ typedef struct {
 #define OPT_INT    0x0080
 #define OPT_FLOAT  0x0100
 #define OPT_SUBTITLE 0x0200
+#define OPT_FUNC2  0x0400
      union {
-        void (*func_arg)(const char *);
+        void (*func_arg)(const char *); //FIXME passing error code as int return would be nicer then exit() in the func
         int *int_arg;
         char **str_arg;
         float *float_arg;
+        int (*func2_arg)(const char *, const char *);
     } u;
     const char *help;
     const char *argname;
diff --git a/ffmpeg.c b/ffmpeg.c
index 20db911cd1..6ffb4232c7 100644
--- a/ffmpeg.c
+++ b/ffmpeg.c
@@ -111,8 +111,6 @@ static int video_lmax = 31*FF_QP2LAMBDA;
 static int video_mb_lmin = 2*FF_QP2LAMBDA;
 static int video_mb_lmax = 31*FF_QP2LAMBDA;
 static int video_qdiff = 3;
-static int video_lelim = 0;
-static int video_celim = 0;
 static float video_qblur = 0.5;
 static float video_qsquish = 0.0;
 static float video_qcomp = 0.5;
@@ -291,6 +289,10 @@ static int limit_filesize = 0; //
 
 static int pgmyuv_compatibility_hack=0;
 
+const char **opt_names=NULL;
+int opt_name_count=0;
+AVCodecContext *avctx_opts;
+
 
 #define DEFAULT_PASS_LOGFILENAME "ffmpeg2pass"
 
@@ -2638,26 +2640,6 @@ static void opt_qsquish(const char *arg)
     }
 }
 
-static void opt_lelim(const char *arg)
-{
-    video_lelim = atoi(arg);
-    if (video_lelim < -99 ||
-        video_lelim > 99) {
-        fprintf(stderr, "lelim must be >= -99 and <= 99\n");
-        exit(1);
-    }
-}
-
-static void opt_celim(const char *arg)
-{
-    video_celim = atoi(arg);
-    if (video_celim < -99 ||
-        video_celim > 99) {
-        fprintf(stderr, "celim must be >= -99 and <= 99\n");
-        exit(1);
-    }
-}
-
 static void opt_lmax(const char *arg)
 {
     video_lmax = atof(arg)*FF_QP2LAMBDA;
@@ -3237,6 +3219,13 @@ static void new_video_stream(AVFormatContext *oc)
                 
         video_enc->codec_id = codec_id;
         codec = avcodec_find_encoder(codec_id);
+        
+        for(i=0; i<opt_name_count; i++){
+             AVOption *opt;
+             double d= av_get_double(avctx_opts, opt_names[i], &opt);
+             if(d==d && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
+                 av_set_double(video_enc, opt_names[i], d);
+        }
                 
         video_enc->bit_rate = video_bit_rate;
         video_enc->bit_rate_tolerance = video_bit_rate_tolerance;
@@ -3383,8 +3372,6 @@ static void new_video_stream(AVFormatContext *oc)
         video_enc->lmin = video_lmin;
         video_enc->lmax = video_lmax;
         video_enc->rc_qsquish = video_qsquish;
-        video_enc->luma_elim_threshold = video_lelim;
-        video_enc->chroma_elim_threshold = video_celim;
         video_enc->mb_lmin = video_mb_lmin;
         video_enc->mb_lmax = video_mb_lmax;
         video_enc->max_qdiff = video_qdiff;
@@ -3486,7 +3473,7 @@ static void new_audio_stream(AVFormatContext *oc)
 {
     AVStream *st;
     AVCodecContext *audio_enc;
-    int codec_id;
+    int codec_id, i;
             
     st = av_new_stream(oc, oc->nb_streams);
     if (!st) {
@@ -3511,6 +3498,14 @@ static void new_audio_stream(AVFormatContext *oc)
         audio_enc->channels = audio_channels;
     } else {
         codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_AUDIO);
+       
+        for(i=0; i<opt_name_count; i++){
+            AVOption *opt;
+            double d= av_get_double(avctx_opts, opt_names[i], &opt);
+            if(d==d && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
+                av_set_double(audio_enc, opt_names[i], d);
+        }
+       
         if (audio_codec_id != CODEC_ID_NONE)
             codec_id = audio_codec_id;
         audio_enc->codec_id = codec_id;
@@ -3549,6 +3544,7 @@ static void opt_new_subtitle_stream(void)
     AVFormatContext *oc;
     AVStream *st;
     AVCodecContext *subtitle_enc;
+    int i;
             
     if (nb_output_files <= 0) {
         fprintf(stderr, "At least one output file must be specified\n");
@@ -3567,6 +3563,12 @@ static void opt_new_subtitle_stream(void)
     if (subtitle_stream_copy) {
         st->stream_copy = 1;
     } else {
+        for(i=0; i<opt_name_count; i++){
+             AVOption *opt;
+             double d= av_get_double(avctx_opts, opt_names[i], &opt);
+             if(d==d && (opt->flags&AV_OPT_FLAG_SUBTITLE_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
+                 av_set_double(subtitle_enc, opt_names[i], d);
+        }
         subtitle_enc->codec_id = subtitle_codec_id;
     }
 
@@ -4190,6 +4192,18 @@ static void show_version(void)
     exit(1);
 }
 
+static int opt_default(const char *opt, const char *arg){
+    AVOption *o= av_set_string(avctx_opts, opt, arg);
+    if(!o)
+        return -1;
+
+    //FIXME we should always use avctx_opts, ... for storing options so there wont be any need to keep track of whats set over this
+    opt_names= av_realloc(opt_names, sizeof(void*)*(opt_name_count+1));
+    opt_names[opt_name_count++]= opt;
+        
+    return 0;
+}
+
 const OptionDef options[] = {
     /* main options */
     { "L", 0, {(void*)show_license}, "show license" },
@@ -4297,8 +4311,6 @@ const OptionDef options[] = {
     { "cmp", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_cmp}, "fullpel compare function", "cmp function" },
     { "precmp", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_pre_cmp}, "pre motion estimation compare function", "cmp function" },
     { "preme", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_pre_me}, "pre motion estimation", "" },
-    { "lelim", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_lelim}, "single coefficient elimination threshold for luminance (negative values also consider DC coefficient)", "elim" },
-    { "celim", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_celim}, "single coefficient elimination threshold for chrominance (negative values also consider DC coefficient)", "elim" },
     { "lumi_mask", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_lumi_mask}, "luminance masking", "" },
     { "dark_mask", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_dark_mask}, "darkness masking", "" },
     { "scplx_mask", HAS_ARG | OPT_EXPERT | OPT_VIDEO, {(void*)opt_scplx_mask}, "spatial complexity masking", "" },
@@ -4398,6 +4410,7 @@ const OptionDef options[] = {
     { "packetsize", OPT_INT | HAS_ARG | OPT_EXPERT, {(void*)&mux_packet_size}, "set packet size", "size" },
     { "muxdelay", OPT_FLOAT | HAS_ARG | OPT_EXPERT, {(void*)&mux_max_delay}, "set the maximum demux-decode delay", "seconds" },
     { "muxpreload", OPT_FLOAT | HAS_ARG | OPT_EXPERT, {(void*)&mux_preload}, "set the initial demux-decode delay", "seconds" },
+    { "default", OPT_FUNC2 | HAS_ARG | OPT_AUDIO | OPT_VIDEO | OPT_EXPERT, {(void*)opt_default}, "generic catch all option", "" },
     { NULL, },
 };
 
@@ -4482,6 +4495,8 @@ static void show_help(void)
     show_help_options(options, "\nAdvanced options:\n",
                       OPT_EXPERT | OPT_AUDIO | OPT_VIDEO | OPT_GRAB, 
                       OPT_EXPERT);
+    av_opt_show(avctx_opts, stdout);
+                         
     exit(1);
 }
 
@@ -4496,6 +4511,8 @@ int main(int argc, char **argv)
     int64_t ti;
 
     av_register_all();
+    
+    avctx_opts= avcodec_alloc_context();
 
     if (argc <= 1)
         show_help();
diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h
index 065522fa5a..cdd42c3aea 100644
--- a/libavcodec/avcodec.h
+++ b/libavcodec/avcodec.h
@@ -21,8 +21,8 @@ extern "C" {
 #define AV_STRINGIFY(s)	AV_TOSTRING(s)
 #define AV_TOSTRING(s) #s
 
-#define LIBAVCODEC_VERSION_INT ((49<<16)+(2<<8)+0)
-#define LIBAVCODEC_VERSION     49.2.0
+#define LIBAVCODEC_VERSION_INT ((50<<16)+(0<<8)+0)
+#define LIBAVCODEC_VERSION     50.0.0
 #define LIBAVCODEC_BUILD       LIBAVCODEC_VERSION_INT
 
 #define LIBAVCODEC_IDENT       "Lavc" AV_STRINGIFY(LIBAVCODEC_VERSION)
@@ -703,6 +703,10 @@ typedef struct AVOption {
 #define AV_OPT_FLAG_ENCODING_PARAM  1   ///< a generic parameter which can be set by the user for muxing or encoding
 #define AV_OPT_FLAG_DECODING_PARAM  2   ///< a generic parameter which can be set by the user for demuxing or decoding
 #define AV_OPT_FLAG_METADATA        4   ///< some data extracted or inserted into the file like title, comment, ...
+#define AV_OPT_FLAG_AUDIO_PARAM     8
+#define AV_OPT_FLAG_VIDEO_PARAM     16
+#define AV_OPT_FLAG_SUBTITLE_PARAM  32
+//FIXME think about enc-audio, ... style flags
 } AVOption;
 
 /**
@@ -1883,14 +1887,16 @@ typedef struct AVCodecContext {
     enum AVDiscard skip_frame;
 } AVCodecContext;
 
-int av_set_string(void *obj, const char *name, const char *val);
-int av_set_double(void *obj, const char *name, double n);
-int av_set_q(void *obj, const char *name, AVRational n);
-int av_set_int(void *obj, const char *name, int64_t n);
-const char *av_get_string(void *obj, const char *name);
-double av_get_double(void *obj, const char *name);
+AVOption *av_set_string(void *obj, const char *name, const char *val);
+AVOption *av_set_double(void *obj, const char *name, double n);
+AVOption *av_set_q(void *obj, const char *name, AVRational n);
+AVOption *av_set_int(void *obj, const char *name, int64_t n);
+double av_get_double(void *obj, const char *name, AVOption **o_out);
+AVRational av_get_q(void *obj, const char *name, AVOption **o_out);
+int64_t av_get_int(void *obj, const char *name, AVOption **o_out);
+const char *av_get_string(void *obj, const char *name, AVOption **o_out, char *buf, int buf_len);
 AVOption *av_next_option(void *obj, AVOption *last);
-
+int av_opt_show(void *obj, FILE *f);
 
 /**
  * AVCodec.
diff --git a/libavcodec/opt.c b/libavcodec/opt.c
index f273c1607b..4c926c1c10 100644
--- a/libavcodec/opt.c
+++ b/libavcodec/opt.c
@@ -52,46 +52,36 @@ AVOption *av_next_option(void *obj, AVOption *last){
     else                     return (*(AVClass**)obj)->option;
 }
 
-static int av_set_number(void *obj, const char *name, double num, int den, int64_t intnum){
+static AVOption *av_set_number(void *obj, const char *name, double num, int den, int64_t intnum){
     AVOption *o= find_opt(obj, name);
     void *dst;
     if(!o || o->offset<=0) 
-        return -1;
+        return NULL;
     
     if(o->max*den < num*intnum || o->min*den > num*intnum)
-        return -1;
+        return NULL;
         
     dst= ((uint8_t*)obj) + o->offset;
 
     switch(o->type){
-    case FF_OPT_TYPE_INT:
-        *(int*)dst= lrintf(num/den)*intnum;
-        break;
-    case FF_OPT_TYPE_INT64:
-        *(int64_t*)dst= lrintf(num/den)*intnum;
-        break;
-    case FF_OPT_TYPE_FLOAT:
-        *(float*)dst= num*intnum/den;
-        break;
-    case FF_OPT_TYPE_DOUBLE:
-        *(double*)dst= num*intnum/den;
-        break;
+    case FF_OPT_TYPE_INT:   *(int       *)dst= lrintf(num/den)*intnum; break;
+    case FF_OPT_TYPE_INT64: *(int64_t   *)dst= lrintf(num/den)*intnum; break;
+    case FF_OPT_TYPE_FLOAT: *(float     *)dst= num*intnum/den;         break;
+    case FF_OPT_TYPE_DOUBLE:*(double    *)dst= num*intnum/den;         break;
     case FF_OPT_TYPE_RATIONAL:
-        if((int)num == num)
-            *(AVRational*)dst= (AVRational){num*intnum, den};
-        else
-            *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
+        if((int)num == num) *(AVRational*)dst= (AVRational){num*intnum, den};
+        else                *(AVRational*)dst= av_d2q(num*intnum/den, 1<<24);
     default:
-        return -1;
+        return NULL;
     }
-    return 0;
+    return o;
 }
 
 //FIXME use eval.c maybe?
-int av_set_string(void *obj, const char *name, const char *val){
+AVOption *av_set_string(void *obj, const char *name, const char *val){
     AVOption *o= find_opt(obj, name);
     if(!o || !val || o->offset<=0) 
-        return -1;
+        return NULL;
     if(o->type != FF_OPT_TYPE_STRING){
         double d=0, tmp_d;
         for(;;){
@@ -113,56 +103,136 @@ int av_set_string(void *obj, const char *name, const char *val){
                 else if(!strcmp(buf, "default")) d+= o->default_val;
                 else if(!strcmp(buf, "max"    )) d+= o->max;
                 else if(!strcmp(buf, "min"    )) d+= o->min;
-                else return -1;
+                else return NULL;
             }
 
             if(*val == '+') val++;
             if(!*val)
                 return av_set_number(obj, name, d, 1, 1);
         }
-        return -1;
+        return NULL;
     }
     
     memcpy(((uint8_t*)obj) + o->offset, val, sizeof(val));
-    return 0;
+    return o;
 }
 
-int av_set_double(void *obj, const char *name, double n){
+AVOption *av_set_double(void *obj, const char *name, double n){
     return av_set_number(obj, name, n, 1, 1);
 }
 
-int av_set_q(void *obj, const char *name, AVRational n){
+AVOption *av_set_q(void *obj, const char *name, AVRational n){
     return av_set_number(obj, name, n.num, n.den, 1);
 }
 
-int av_set_int(void *obj, const char *name, int64_t n){
+AVOption *av_set_int(void *obj, const char *name, int64_t n){
     return av_set_number(obj, name, 1, 1, n);
 }
 
-const char *av_get_string(void *obj, const char *name){
+/**
+ * 
+ * @param buf a buffer which is used for returning non string values as strings, can be NULL
+ * @param buf_len allocated length in bytes of buf
+ */
+const char *av_get_string(void *obj, const char *name, AVOption **o_out, char *buf, int buf_len){
     AVOption *o= find_opt(obj, name);
+    void *dst;
     if(!o || o->offset<=0)
         return NULL;
-    if(o->type != FF_OPT_TYPE_STRING) //FIXME convert to string? but what about free()?
+    if(o->type != FF_OPT_TYPE_STRING && (!buf || !buf_len))
         return NULL;
 
-    return (const char*)(((uint8_t*)obj) + o->offset);
+    dst= ((uint8_t*)obj) + o->offset;
+    if(o_out) *o_out= o;
+    
+    if(o->type == FF_OPT_TYPE_STRING)
+        return dst;
+    
+    switch(o->type){
+    case FF_OPT_TYPE_INT:       snprintf(buf, buf_len, "%d" , *(int    *)dst);break;
+    case FF_OPT_TYPE_INT64:     snprintf(buf, buf_len, "%Ld", *(int64_t*)dst);break;
+    case FF_OPT_TYPE_FLOAT:     snprintf(buf, buf_len, "%f" , *(float  *)dst);break;
+    case FF_OPT_TYPE_DOUBLE:    snprintf(buf, buf_len, "%f" , *(double *)dst);break;
+    case FF_OPT_TYPE_RATIONAL:  snprintf(buf, buf_len, "%d/%d", ((AVRational*)dst)->num, ((AVRational*)dst)->den);break;
+    default: return NULL;
+    }
+    return buf;
 }
 
-double av_get_double(void *obj, const char *name){
+static int av_get_number(void *obj, const char *name, AVOption **o_out, double *num, int *den, int64_t *intnum){
     AVOption *o= find_opt(obj, name);
     void *dst;
     if(!o || o->offset<=0)
-        return NAN;
+        goto error;
 
     dst= ((uint8_t*)obj) + o->offset;
 
+    if(o_out) *o_out= o;
+
     switch(o->type){
-    case FF_OPT_TYPE_INT:       return *(int*)dst;
-    case FF_OPT_TYPE_INT64:     return *(int64_t*)dst; //FIXME maybe write a av_get_int64() ?
-    case FF_OPT_TYPE_FLOAT:     return *(float*)dst;
-    case FF_OPT_TYPE_DOUBLE:    return *(double*)dst;
-    case FF_OPT_TYPE_RATIONAL:  return av_q2d(*(AVRational*)dst); //FIXME maybe write a av_get_q() ?
-    default:                    return NAN;
+    case FF_OPT_TYPE_INT:       *intnum= *(int    *)dst;return 0;
+    case FF_OPT_TYPE_INT64:     *intnum= *(int64_t*)dst;return 0;
+    case FF_OPT_TYPE_FLOAT:     *num=    *(float  *)dst;return 0;
+    case FF_OPT_TYPE_DOUBLE:    *num=    *(double *)dst;return 0;
+    case FF_OPT_TYPE_RATIONAL:  *intnum= ((AVRational*)dst)->num; 
+                                *den   = ((AVRational*)dst)->den;
+                                                        return 0;
     }
+error:
+    *den=*intnum=0;
+    return -1;
+}
+
+double av_get_double(void *obj, const char *name, AVOption **o_out){
+    int64_t intnum=1;
+    double num=1;
+    int den=1;
+
+    av_get_number(obj, name, o_out, &num, &den, &intnum);
+    return num*intnum/den;
+}
+
+AVRational av_get_q(void *obj, const char *name, AVOption **o_out){
+    int64_t intnum=1;
+    double num=1;
+    int den=1;
+
+    av_get_number(obj, name, o_out, &num, &den, &intnum);
+    if(num == 1.0 && (int)intnum == intnum)
+        return (AVRational){intnum, den};
+    else
+        return av_d2q(num*intnum/den, 1<<24);
+}
+
+int64_t av_get_int(void *obj, const char *name, AVOption **o_out){
+    int64_t intnum=1;
+    double num=1;
+    int den=1;
+
+    av_get_number(obj, name, o_out, &num, &den, &intnum);
+    return num*intnum/den;
+}
+
+int av_opt_show(void *obj, FILE *f){
+    AVOption *opt=NULL;
+    
+    if(!obj)
+        return -1;
+#undef fprintf
+    fprintf(f, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);
+
+    while((opt= av_next_option(obj, opt))){
+        if(!(opt->flags & (AV_OPT_FLAG_ENCODING_PARAM|AV_OPT_FLAG_DECODING_PARAM)))
+            continue;
+            
+        fprintf(f, "-%-17s ", opt->name);
+        fprintf(f, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
+        fprintf(f, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
+        fprintf(f, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM   ) ? 'V' : '.');
+        fprintf(f, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM   ) ? 'A' : '.');
+        fprintf(f, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
+        
+        fprintf(f, " %s\n", opt->help);
+    }
+    return 0;
 }
diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 20b7a95a64..f6a5a3f1b3 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -437,16 +437,22 @@ static const char* context_to_name(void* ptr) {
 
 #define OFFSET(x) (int)&((AVCodecContext*)0)->x
 #define DEFAULT 0 //should be NAN but it doesnt work as its not a constant in glibc as required by ANSI/ISO C
+//these names are too long to be readable
+#define V AV_OPT_FLAG_VIDEO_PARAM
+#define A AV_OPT_FLAG_AUDIO_PARAM
+#define S AV_OPT_FLAG_SUBTITLE_PARAM
+#define E AV_OPT_FLAG_ENCODING_PARAM 
+#define D AV_OPT_FLAG_DECODING_PARAM
 
 static AVOption options[]={
-{"bit_rate", NULL, OFFSET(bit_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"bit_rate_tolerance", NULL, OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"bit_rate", NULL, OFFSET(bit_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
+{"bit_rate_tolerance", NULL, OFFSET(bit_rate_tolerance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"flags", NULL, OFFSET(flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX}, //FIXME
 {"sub_id", NULL, OFFSET(sub_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"me_method", NULL, OFFSET(me_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"me_method", NULL, OFFSET(me_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"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},
-{"gop_size", NULL, OFFSET(gop_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"gop_size", NULL, OFFSET(gop_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"rate_emu", NULL, OFFSET(rate_emu), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"sample_rate", NULL, OFFSET(sample_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"channels", NULL, OFFSET(channels), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
@@ -454,16 +460,16 @@ static AVOption options[]={
 {"frame_number", NULL, OFFSET(frame_number), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"real_pict_num", NULL, OFFSET(real_pict_num), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"delay", NULL, OFFSET(delay), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"qcompress", NULL, OFFSET(qcompress), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"qblur", NULL, OFFSET(qblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"qmin", NULL, OFFSET(qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"qmax", NULL, OFFSET(qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"max_qdiff", NULL, OFFSET(max_qdiff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"max_b_frames", NULL, OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"b_quant_factor", NULL, OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"b_frame_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"qcompress", NULL, OFFSET(qcompress), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"qblur", NULL, OFFSET(qblur), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"qmin", NULL, OFFSET(qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"qmax", NULL, OFFSET(qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"max_qdiff", NULL, OFFSET(max_qdiff), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"max_b_frames", NULL, OFFSET(max_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"b_quant_factor", NULL, OFFSET(b_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"rc_strategy", NULL, OFFSET(rc_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"b_frame_strategy", NULL, OFFSET(b_frame_strategy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"hurry_up", NULL, OFFSET(hurry_up), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
 {"rtp_mode", NULL, OFFSET(rtp_mode), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"rtp_payload_size", NULL, OFFSET(rtp_payload_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"mv_bits", NULL, OFFSET(mv_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
@@ -476,101 +482,104 @@ static AVOption options[]={
 {"misc_bits", NULL, OFFSET(misc_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"frame_bits", NULL, OFFSET(frame_bits), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"codec_tag", NULL, OFFSET(codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"workaround_bugs", NULL, OFFSET(workaround_bugs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"luma_elim_threshold", NULL, OFFSET(luma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"chroma_elim_threshold", NULL, OFFSET(chroma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"strict_std_compliance", NULL, OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"b_quant_offset", NULL, OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"error_resilience", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"workaround_bugs", NULL, OFFSET(workaround_bugs), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
+{"lelim", "single coefficient elimination threshold for luminance (negative values also consider DC coefficient)", OFFSET(luma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"celim", "single coefficient elimination threshold for chrominance (negative values also consider DC coefficient)", OFFSET(chroma_elim_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"strict_std_compliance", NULL, OFFSET(strict_std_compliance), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"b_quant_offset", NULL, OFFSET(b_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"error_resilience", NULL, OFFSET(error_resilience), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
 {"has_b_frames", NULL, OFFSET(has_b_frames), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"block_align", NULL, OFFSET(block_align), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"parse_only", NULL, OFFSET(parse_only), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"mpeg_quant", NULL, OFFSET(mpeg_quant), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"stats_out", NULL, OFFSET(stats_out), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
 {"stats_in", NULL, OFFSET(stats_in), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
-{"rc_qsquish", NULL, OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"rc_qsquish", NULL, OFFSET(rc_qsquish), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"rc_qmod_amp", NULL, OFFSET(rc_qmod_amp), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"rc_qmod_freq", NULL, OFFSET(rc_qmod_freq), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"rc_override_count", NULL, OFFSET(rc_override_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"rc_eq", NULL, OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX},
-{"rc_max_rate", NULL, OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"rc_min_rate", NULL, OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"rc_buffer_size", NULL, OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"rc_buffer_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"i_quant_factor", NULL, OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"i_quant_offset", NULL, OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"rc_initial_cplx", NULL, OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"dct_algo", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"lumi_masking", NULL, OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"temporal_cplx_masking", NULL, OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"spatial_cplx_masking", NULL, OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"p_masking", NULL, OFFSET(p_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"dark_masking", NULL, OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
+{"rc_eq", NULL, OFFSET(rc_eq), FF_OPT_TYPE_STRING, DEFAULT, CHAR_MIN, CHAR_MAX, V|E},
+{"rc_max_rate", NULL, OFFSET(rc_max_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"rc_min_rate", NULL, OFFSET(rc_min_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"rc_buffer_size", NULL, OFFSET(rc_buffer_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"rc_buf_aggressivity", NULL, OFFSET(rc_buffer_aggressivity), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"i_quant_factor", NULL, OFFSET(i_quant_factor), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"i_quant_offset", NULL, OFFSET(i_quant_offset), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"rc_initial_cplx", NULL, OFFSET(rc_initial_cplx), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"dct_algo", NULL, OFFSET(dct_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"lumi_mask", NULL, OFFSET(lumi_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"tcplx_mask", NULL, OFFSET(temporal_cplx_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"scplx_mask", NULL, OFFSET(spatial_cplx_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"p_mask", NULL, OFFSET(p_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"dark_mask", NULL, OFFSET(dark_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
 {"unused", NULL, OFFSET(unused), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"idct_algo", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"idct_algo", NULL, OFFSET(idct_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E|D},
 {"slice_count", NULL, OFFSET(slice_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"error_concealment", NULL, OFFSET(error_concealment), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"error_concealment", NULL, OFFSET(error_concealment), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
 {"bits_per_sample", NULL, OFFSET(bits_per_sample), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"prediction_method", NULL, OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"sample_aspect_ratio", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX},
-{"debug", NULL, OFFSET(debug), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"debug_mv", NULL, OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"me_cmp", NULL, OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"me_sub_cmp", NULL, OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"mb_cmp", NULL, OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"ildct_cmp", NULL, OFFSET(ildct_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"last_predictor_count", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"pre_me", NULL, OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"me_pre_cmp", NULL, OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"me_subpel_quality", NULL, OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"prediction_method", NULL, OFFSET(prediction_method), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"aspect", NULL, OFFSET(sample_aspect_ratio), FF_OPT_TYPE_RATIONAL, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"debug", NULL, OFFSET(debug), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|S|E|D},
+{"debug_mv", NULL, OFFSET(debug_mv), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
+{"mb_qmin", NULL, OFFSET(mb_qmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"mb_qmax", NULL, OFFSET(mb_qmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"me_cmp", NULL, OFFSET(me_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"me_sub_cmp", NULL, OFFSET(me_sub_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"mb_cmp", NULL, OFFSET(mb_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"ildct_cmp", NULL, OFFSET(ildct_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"dia_size", NULL, OFFSET(dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"last_pred", NULL, OFFSET(last_predictor_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"pre_me", NULL, OFFSET(pre_me), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"me_pre_cmp", NULL, OFFSET(me_pre_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"pre_dia_size", NULL, OFFSET(pre_dia_size), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"me_subpel_quality", NULL, OFFSET(me_subpel_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"dtg_active_format", NULL, OFFSET(dtg_active_format), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"me_range", NULL, OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"intra_quant_bias", NULL, OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"inter_quant_bias", NULL, OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"me_range", NULL, OFFSET(me_range), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"ibias", NULL, OFFSET(intra_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"pbias", NULL, OFFSET(inter_quant_bias), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"color_table_id", NULL, OFFSET(color_table_id), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"internal_buffer_count", NULL, OFFSET(internal_buffer_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"global_quality", NULL, OFFSET(global_quality), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"coder_type", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"context_model", NULL, OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"coder_type", NULL, OFFSET(coder_type), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"context_model", NULL, OFFSET(context_model), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"slice_flags", NULL, OFFSET(slice_flags), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"xvmc_acceleration", NULL, OFFSET(xvmc_acceleration), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"mb_decision", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"mb_decision", NULL, OFFSET(mb_decision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"stream_codec_tag", NULL, OFFSET(stream_codec_tag), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"scenechange_threshold", NULL, OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"lmin", NULL, OFFSET(lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"lmax", NULL, OFFSET(lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"noise_reduction", NULL, OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"rc_initial_buffer_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"sc_threshold", NULL, OFFSET(scenechange_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"lmin", NULL, OFFSET(lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"lmax", NULL, OFFSET(lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"noise_reduction", NULL, OFFSET(noise_reduction), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"rc_init_occupancy", NULL, OFFSET(rc_initial_buffer_occupancy), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"inter_threshold", NULL, OFFSET(inter_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {"flags2", NULL, OFFSET(flags2), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"error_rate", NULL, OFFSET(error_rate), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"antialias_algo", NULL, OFFSET(antialias_algo), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"quantizer_noise_shaping", NULL, OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"thread_count", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"quantizer_noise_shaping", NULL, OFFSET(quantizer_noise_shaping), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"thread_count", NULL, OFFSET(thread_count), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E|D},
 {"me_threshold", NULL, OFFSET(me_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
 {"mb_threshold", NULL, OFFSET(mb_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"intra_dc_precision", NULL, OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"nsse_weight", NULL, OFFSET(nsse_weight), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"frame_skip_threshold", NULL, OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"frame_skip_factor", NULL, OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"frame_skip_exp", NULL, OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"frame_skip_cmp", NULL, OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"border_masking", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX},
-{"mb_lmin", NULL, OFFSET(mb_lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"mb_lmax", NULL, OFFSET(mb_lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
-{"me_penalty_compensation", NULL, OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX},
+{"dc", NULL, OFFSET(intra_dc_precision), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"nsse_weight", NULL, OFFSET(nsse_weight), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"skip_top", NULL, OFFSET(skip_top), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
+{"skip_bottom", NULL, OFFSET(skip_bottom), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
+{"profile", NULL, OFFSET(profile), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
+{"level", NULL, OFFSET(level), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|A|E},
+{"lowres", NULL, OFFSET(lowres), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|D},
+{"frame_skip_threshold", NULL, OFFSET(frame_skip_threshold), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"frame_skip_factor", NULL, OFFSET(frame_skip_factor), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"frame_skip_exp", NULL, OFFSET(frame_skip_exp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"frame_skip_cmp", NULL, OFFSET(frame_skip_cmp), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"border_mask", NULL, OFFSET(border_masking), FF_OPT_TYPE_FLOAT, DEFAULT, FLT_MIN, FLT_MAX, V|E},
+{"mb_lmin", NULL, OFFSET(mb_lmin), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"mb_lmax", NULL, OFFSET(mb_lmax), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
+{"me_penalty_compensation", NULL, OFFSET(me_penalty_compensation), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, V|E},
 {NULL},
 };
 
+#undef A
+#undef V
+
 static AVClass av_codec_context_class = { "AVCodecContext", context_to_name, options };
 
 void avcodec_get_context_defaults(AVCodecContext *s){