* AVOptions
* Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
-
+
/**
* @file opt.c
* AVOptions
* @author Michael Niedermayer <michaelni@gmx.at>
*/
-
+
#include "avcodec.h"
-
-static double av_parse_num(const char *name, char **tail){
- double d;
- d= strtod(name, tail);
- if(*tail>name && (**tail=='/' || **tail==':'))
- d/=strtod((*tail)+1, tail);
- return d;
-}
+#include "opt.h"
+#include "eval.h"
//FIXME order them and do a bin search
-static AVOption *find_opt(void *v, const char *name){
+const AVOption *av_find_opt(void *v, const char *name, const char *unit, int mask, int flags){
AVClass *c= *(AVClass**)v; //FIXME silly way of storing AVClass
- AVOption *o= c->option;
-
+ const AVOption *o= c->option;
+
for(;o && o->name; o++){
- if(!strcmp(o->name, name))
+ if(!strcmp(o->name, name) && (!unit || (o->unit && !strcmp(o->unit, unit))) && (o->flags & mask) == flags )
return o;
}
return NULL;
}
-static int av_set_number(void *obj, const char *name, double num, int den, int64_t intnum){
- AVOption *o= find_opt(obj, name);
+const AVOption *av_next_option(void *obj, const AVOption *last){
+ if(last && last[1].name) return ++last;
+ else if(last) return NULL;
+ else return (*(AVClass**)obj)->option;
+}
+
+static const AVOption *av_set_number(void *obj, const char *name, double num, int den, int64_t intnum){
+ const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
void *dst;
- if(!o || o->offset<=0)
- return -1;
-
- if(o->max*den < num*intnum || o->min*den > num*intnum)
- return -1;
-
+ if(!o || o->offset<=0)
+ return NULL;
+
+ if(o->max*den < num*intnum || o->min*den > num*intnum) {
+ av_log(NULL, AV_LOG_ERROR, "Value %lf for parameter '%s' out of range.\n", num, name);
+ 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_FLAGS:
+ 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 *o= find_opt(obj, name);
- if(!o || !val || o->offset<=0)
- return -1;
+static const AVOption *set_all_opt(void *v, const char *unit, double d){
+ AVClass *c= *(AVClass**)v; //FIXME silly way of storing AVClass
+ const AVOption *o= c->option;
+ const AVOption *ret=NULL;
+
+ for(;o && o->name; o++){
+ if(o->type != FF_OPT_TYPE_CONST && o->unit && !strcmp(o->unit, unit)){
+ double tmp= d;
+ if(o->type == FF_OPT_TYPE_FLAGS)
+ tmp= av_get_int(v, o->name, NULL) | (int64_t)d;
+
+ av_set_number(v, o->name, tmp, 1, 1);
+ ret= o;
+ }
+ }
+ return ret;
+}
+
+static double const_values[]={
+ M_PI,
+ M_E,
+ FF_QP2LAMBDA,
+ 0
+};
+
+static const char *const_names[]={
+ "PI",
+ "E",
+ "QP2LAMBDA",
+ 0
+};
+
+const AVOption *av_set_string(void *obj, const char *name, const char *val){
+ const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
+ if(o && o->offset==0 && o->type == FF_OPT_TYPE_CONST && o->unit){
+ return set_all_opt(obj, o->unit, o->default_val);
+ }
+ if(!o || !val || o->offset<=0)
+ return NULL;
if(o->type != FF_OPT_TYPE_STRING){
- double d=0, tmp_d;
for(;;){
int i;
- char buf[256], *tail;
+ char buf[256];
+ int cmd=0;
+ double d;
+ char *error = NULL;
+
+ if(*val == '+' || *val == '-')
+ cmd= *(val++);
- for(i=0; i<sizeof(buf)-1 && val[i] && val[i]!='+'; i++)
+ for(i=0; i<sizeof(buf)-1 && val[i] && val[i]!='+' && val[i]!='-'; i++)
buf[i]= val[i];
buf[i]=0;
val+= i;
-
- tmp_d= av_parse_num(buf, &tail);
- if(tail > buf)
- d+= tmp_d;
- else{
- AVOption *o_named= find_opt(obj, buf);
- if(o_named && o_named->type == FF_OPT_TYPE_CONST)
- d+= o_named->default_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;
+
+ d = ff_eval2(buf, const_values, const_names, NULL, NULL, NULL, NULL, NULL, &error);
+ if(isnan(d)) {
+ const AVOption *o_named= av_find_opt(obj, buf, o->unit, 0, 0);
+ if(o_named && o_named->type == FF_OPT_TYPE_CONST)
+ d= o_named->default_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 if(!strcmp(buf, "none" )) d= 0;
+ else if(!strcmp(buf, "all" )) d= ~0;
+ else {
+ if (!error)
+ av_log(NULL, AV_LOG_ERROR, "Unable to parse option value \"%s\": %s\n", val, error);
+ return NULL;
+ }
}
+ if(o->type == FF_OPT_TYPE_FLAGS){
+ if (cmd=='+') d= av_get_int(obj, name, NULL) | (int64_t)d;
+ else if(cmd=='-') d= av_get_int(obj, name, NULL) &~(int64_t)d;
+ }else if(cmd=='-')
+ d= -d;
- if(*val == '+') val++;
+ av_set_number(obj, name, d, 1, 1);
if(!*val)
- return av_set_number(obj, name, d, 1, 1);
+ return o;
}
- 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){
+const 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){
+const 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){
+const 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){
- AVOption *o= find_opt(obj, 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, const AVOption **o_out, char *buf, int buf_len){
+ const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
+ 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_FLAGS: snprintf(buf, buf_len, "0x%08X",*(int *)dst);break;
+ case FF_OPT_TYPE_INT: snprintf(buf, buf_len, "%d" , *(int *)dst);break;
+ case FF_OPT_TYPE_INT64: snprintf(buf, buf_len, "%"PRId64, *(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){
- AVOption *o= find_opt(obj, name);
+static int av_get_number(void *obj, const char *name, const AVOption **o_out, double *num, int *den, int64_t *intnum){
+ const AVOption *o= av_find_opt(obj, name, NULL, 0, 0);
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_FLAGS:
+ 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, const 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, const 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, const 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;
+}
+
+static void opt_list(void *obj, void *av_log_obj, const char *unit)
+{
+ const AVOption *opt=NULL;
+
+ while((opt= av_next_option(obj, opt))){
+ if(!(opt->flags & (AV_OPT_FLAG_ENCODING_PARAM|AV_OPT_FLAG_DECODING_PARAM)))
+ continue;
+
+ /* Don't print CONST's on level one.
+ * Don't print anything but CONST's on level two.
+ * Only print items from the requested unit.
+ */
+ if (!unit && opt->type==FF_OPT_TYPE_CONST)
+ continue;
+ else if (unit && opt->type!=FF_OPT_TYPE_CONST)
+ continue;
+ else if (unit && opt->type==FF_OPT_TYPE_CONST && strcmp(unit, opt->unit))
+ continue;
+ else if (unit && opt->type == FF_OPT_TYPE_CONST)
+ av_log(av_log_obj, AV_LOG_INFO, " %-15s ", opt->name);
+ else
+ av_log(av_log_obj, AV_LOG_INFO, "-%-17s ", opt->name);
+
+ switch( opt->type )
+ {
+ case FF_OPT_TYPE_FLAGS:
+ av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<flags>" );
+ break;
+ case FF_OPT_TYPE_INT:
+ av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<int>" );
+ break;
+ case FF_OPT_TYPE_INT64:
+ av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<int64>" );
+ break;
+ case FF_OPT_TYPE_DOUBLE:
+ av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<double>" );
+ break;
+ case FF_OPT_TYPE_FLOAT:
+ av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<float>" );
+ break;
+ case FF_OPT_TYPE_STRING:
+ av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<string>" );
+ break;
+ case FF_OPT_TYPE_RATIONAL:
+ av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "<rational>" );
+ break;
+ case FF_OPT_TYPE_CONST:
+ default:
+ av_log( av_log_obj, AV_LOG_INFO, "%-7s ", "" );
+ break;
+ }
+ av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_ENCODING_PARAM) ? 'E' : '.');
+ av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_DECODING_PARAM) ? 'D' : '.');
+ av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_VIDEO_PARAM ) ? 'V' : '.');
+ av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_AUDIO_PARAM ) ? 'A' : '.');
+ av_log(av_log_obj, AV_LOG_INFO, "%c", (opt->flags & AV_OPT_FLAG_SUBTITLE_PARAM) ? 'S' : '.');
+
+ if(opt->help)
+ av_log(av_log_obj, AV_LOG_INFO, " %s", opt->help);
+ av_log(av_log_obj, AV_LOG_INFO, "\n");
+ if (opt->unit && opt->type != FF_OPT_TYPE_CONST) {
+ opt_list(obj, av_log_obj, opt->unit);
+ }
+ }
+}
+
+int av_opt_show(void *obj, void *av_log_obj){
+ if(!obj)
+ return -1;
+
+ av_log(av_log_obj, AV_LOG_INFO, "%s AVOptions:\n", (*(AVClass**)obj)->class_name);
+
+ opt_list(obj, av_log_obj, NULL);
+
+ return 0;
+}
+
+/** Set the values of the AVCodecContext or AVFormatContext structure.
+ * They are set to the defaults specified in the according AVOption options
+ * array default_val field.
+ *
+ * @param s AVCodecContext or AVFormatContext for which the defaults will be set
+ */
+void av_opt_set_defaults2(void *s, int mask, int flags)
+{
+ const AVOption *opt = NULL;
+ while ((opt = av_next_option(s, opt)) != NULL) {
+ if((opt->flags & mask) != flags)
+ continue;
+ switch(opt->type) {
+ case FF_OPT_TYPE_CONST:
+ /* Nothing to be done here */
+ break;
+ case FF_OPT_TYPE_FLAGS:
+ case FF_OPT_TYPE_INT: {
+ int val;
+ val = opt->default_val;
+ av_set_int(s, opt->name, val);
+ }
+ break;
+ case FF_OPT_TYPE_FLOAT: {
+ double val;
+ val = opt->default_val;
+ av_set_double(s, opt->name, val);
+ }
+ break;
+ case FF_OPT_TYPE_RATIONAL: {
+ AVRational val;
+ val = av_d2q(opt->default_val, INT_MAX);
+ av_set_q(s, opt->name, val);
+ }
+ break;
+ case FF_OPT_TYPE_STRING:
+ /* Cannot set default for string as default_val is of type * double */
+ break;
+ default:
+ av_log(s, AV_LOG_DEBUG, "AVOption type %d of option %s not implemented yet\n", opt->type, opt->name);
+ }
+ }
+}
+
+void av_opt_set_defaults(void *s){
+ av_opt_set_defaults2(s, 0, 0);
+}
+
projects / ffmpeg / blobdiff