mirror of https://git.ffmpeg.org/ffmpeg.git
Cosmetics: consistently apply K&R style.
Make me and Diego happy. Originally committed as revision 23404 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Stefano Sabatini
parent
9711439b44
commit
0cd28d9494
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@ -29,7 +29,7 @@
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#include "libavutil/avutil.h"
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#include "eval.h"
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typedef struct Parser{
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typedef struct Parser {
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const AVClass *class;
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int stack_index;
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char *s;
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@ -48,7 +48,7 @@ typedef struct Parser{
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static const AVClass class = { "Eval", av_default_item_name, NULL, LIBAVUTIL_VERSION_INT, offsetof(Parser,log_offset), offsetof(Parser,log_ctx) };
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static const int8_t si_prefixes['z' - 'E' + 1]={
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static const int8_t si_prefixes['z' - 'E' + 1] = {
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['y'-'E']= -24,
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['z'-'E']= -21,
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['a'-'E']= -18,
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@ -71,27 +71,27 @@ static const int8_t si_prefixes['z' - 'E' + 1]={
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['Y'-'E']= 24,
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};
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double av_strtod(const char *numstr, char **tail) {
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double av_strtod(const char *numstr, char **tail)
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{
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double d;
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char *next;
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d = strtod(numstr, &next);
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/* if parsing succeeded, check for and interpret postfixes */
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if (next!=numstr) {
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if(*next >= 'E' && *next <= 'z'){
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if (*next >= 'E' && *next <= 'z') {
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int e= si_prefixes[*next - 'E'];
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if(e){
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if(next[1] == 'i'){
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if (e) {
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if (next[1] == 'i') {
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d*= pow( 2, e/0.3);
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next+=2;
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}else{
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} else {
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d*= pow(10, e);
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next++;
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}
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}
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}
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if(*next=='B') {
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if (*next=='B') {
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d*=8;
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next++;
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}
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@ -103,10 +103,11 @@ double av_strtod(const char *numstr, char **tail) {
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return d;
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}
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static int strmatch(const char *s, const char *prefix){
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static int strmatch(const char *s, const char *prefix)
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{
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int i;
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for(i=0; prefix[i]; i++){
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if(prefix[i] != s[i]) return 0;
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for (i=0; prefix[i]; i++) {
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if (prefix[i] != s[i]) return 0;
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}
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return 1;
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}
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@ -129,7 +130,8 @@ struct AVExpr {
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struct AVExpr *param[2];
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};
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static double eval_expr(Parser * p, AVExpr * e) {
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static double eval_expr(Parser *p, AVExpr *e)
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{
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switch (e->type) {
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case e_value: return e->value;
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case e_const: return e->value * p->const_values[e->a.const_index];
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@ -141,7 +143,7 @@ static double eval_expr(Parser * p, AVExpr * e) {
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case e_ld: return e->value * p->var[av_clip(eval_expr(p, e->param[0]), 0, VARS-1)];
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case e_while: {
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double d = NAN;
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while(eval_expr(p, e->param[0]))
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while (eval_expr(p, e->param[0]))
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d=eval_expr(p, e->param[1]);
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return d;
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}
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@ -169,7 +171,8 @@ static double eval_expr(Parser * p, AVExpr * e) {
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static int parse_expr(AVExpr **e, Parser *p);
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void ff_free_expr(AVExpr * e) {
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void ff_free_expr(AVExpr *e)
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{
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if (!e) return;
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ff_free_expr(e->param[0]);
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ff_free_expr(e->param[1]);
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@ -178,7 +181,7 @@ void ff_free_expr(AVExpr * e) {
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static int parse_primary(AVExpr **e, Parser *p)
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{
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AVExpr * d = av_mallocz(sizeof(AVExpr));
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AVExpr *d = av_mallocz(sizeof(AVExpr));
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char *next= p->s;
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int ret, i;
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@ -187,7 +190,7 @@ static int parse_primary(AVExpr **e, Parser *p)
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/* number */
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d->value = av_strtod(p->s, &next);
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if(next != p->s){
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if (next != p->s) {
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d->type = e_value;
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p->s= next;
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*e = d;
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@ -196,8 +199,8 @@ static int parse_primary(AVExpr **e, Parser *p)
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d->value = 1;
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/* named constants */
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for(i=0; p->const_names && p->const_names[i]; i++){
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if(strmatch(p->s, p->const_names[i])){
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for (i=0; p->const_names && p->const_names[i]; i++) {
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if (strmatch(p->s, p->const_names[i])) {
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p->s+= strlen(p->const_names[i]);
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d->type = e_const;
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d->a.const_index = i;
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@ -207,7 +210,7 @@ static int parse_primary(AVExpr **e, Parser *p)
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}
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p->s= strchr(p->s, '(');
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if(p->s==NULL){
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if (p->s==NULL) {
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av_log(p, AV_LOG_ERROR, "undefined constant or missing (\n");
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p->s= next;
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ff_free_expr(d);
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@ -218,7 +221,7 @@ static int parse_primary(AVExpr **e, Parser *p)
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av_freep(&d);
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if ((ret = parse_expr(&d, p)) < 0)
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return ret;
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if(p->s[0] != ')'){
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if (p->s[0] != ')') {
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av_log(p, AV_LOG_ERROR, "missing )\n");
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ff_free_expr(d);
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return AVERROR(EINVAL);
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@ -231,11 +234,11 @@ static int parse_primary(AVExpr **e, Parser *p)
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ff_free_expr(d);
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return ret;
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}
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if(p->s[0]== ','){
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if (p->s[0]== ',') {
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p->s++; // ","
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parse_expr(&d->param[1], p);
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}
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if(p->s[0] != ')'){
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if (p->s[0] != ')') {
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av_log(p, AV_LOG_ERROR, "missing )\n");
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ff_free_expr(d);
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return AVERROR(EINVAL);
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@ -243,34 +246,34 @@ static int parse_primary(AVExpr **e, Parser *p)
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p->s++; // ")"
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d->type = e_func0;
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if( strmatch(next, "sinh" ) ) d->a.func0 = sinh;
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else if( strmatch(next, "cosh" ) ) d->a.func0 = cosh;
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else if( strmatch(next, "tanh" ) ) d->a.func0 = tanh;
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else if( strmatch(next, "sin" ) ) d->a.func0 = sin;
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else if( strmatch(next, "cos" ) ) d->a.func0 = cos;
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else if( strmatch(next, "tan" ) ) d->a.func0 = tan;
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else if( strmatch(next, "atan" ) ) d->a.func0 = atan;
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else if( strmatch(next, "asin" ) ) d->a.func0 = asin;
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else if( strmatch(next, "acos" ) ) d->a.func0 = acos;
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else if( strmatch(next, "exp" ) ) d->a.func0 = exp;
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else if( strmatch(next, "log" ) ) d->a.func0 = log;
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else if( strmatch(next, "abs" ) ) d->a.func0 = fabs;
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else if( strmatch(next, "squish") ) d->type = e_squish;
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else if( strmatch(next, "gauss" ) ) d->type = e_gauss;
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else if( strmatch(next, "mod" ) ) d->type = e_mod;
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else if( strmatch(next, "max" ) ) d->type = e_max;
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else if( strmatch(next, "min" ) ) d->type = e_min;
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else if( strmatch(next, "eq" ) ) d->type = e_eq;
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else if( strmatch(next, "gte" ) ) d->type = e_gte;
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else if( strmatch(next, "gt" ) ) d->type = e_gt;
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else if( strmatch(next, "lte" ) ) { AVExpr * tmp = d->param[1]; d->param[1] = d->param[0]; d->param[0] = tmp; d->type = e_gt; }
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else if( strmatch(next, "lt" ) ) { AVExpr * tmp = d->param[1]; d->param[1] = d->param[0]; d->param[0] = tmp; d->type = e_gte; }
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else if( strmatch(next, "ld" ) ) d->type = e_ld;
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else if( strmatch(next, "st" ) ) d->type = e_st;
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else if( strmatch(next, "while" ) ) d->type = e_while;
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if (strmatch(next, "sinh" )) d->a.func0 = sinh;
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else if (strmatch(next, "cosh" )) d->a.func0 = cosh;
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else if (strmatch(next, "tanh" )) d->a.func0 = tanh;
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else if (strmatch(next, "sin" )) d->a.func0 = sin;
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else if (strmatch(next, "cos" )) d->a.func0 = cos;
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else if (strmatch(next, "tan" )) d->a.func0 = tan;
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else if (strmatch(next, "atan" )) d->a.func0 = atan;
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else if (strmatch(next, "asin" )) d->a.func0 = asin;
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else if (strmatch(next, "acos" )) d->a.func0 = acos;
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else if (strmatch(next, "exp" )) d->a.func0 = exp;
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else if (strmatch(next, "log" )) d->a.func0 = log;
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else if (strmatch(next, "abs" )) d->a.func0 = fabs;
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else if (strmatch(next, "squish")) d->type = e_squish;
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else if (strmatch(next, "gauss" )) d->type = e_gauss;
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else if (strmatch(next, "mod" )) d->type = e_mod;
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else if (strmatch(next, "max" )) d->type = e_max;
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else if (strmatch(next, "min" )) d->type = e_min;
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else if (strmatch(next, "eq" )) d->type = e_eq;
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else if (strmatch(next, "gte" )) d->type = e_gte;
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else if (strmatch(next, "gt" )) d->type = e_gt;
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else if (strmatch(next, "lte" )) { AVExpr *tmp = d->param[1]; d->param[1] = d->param[0]; d->param[0] = tmp; d->type = e_gt; }
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else if (strmatch(next, "lt" )) { AVExpr *tmp = d->param[1]; d->param[1] = d->param[0]; d->param[0] = tmp; d->type = e_gte; }
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else if (strmatch(next, "ld" )) d->type = e_ld;
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else if (strmatch(next, "st" )) d->type = e_st;
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else if (strmatch(next, "while" )) d->type = e_while;
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else {
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for(i=0; p->func1_names && p->func1_names[i]; i++){
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if(strmatch(next, p->func1_names[i])){
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for (i=0; p->func1_names && p->func1_names[i]; i++) {
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if (strmatch(next, p->func1_names[i])) {
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d->a.func1 = p->funcs1[i];
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d->type = e_func1;
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*e = d;
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@ -278,8 +281,8 @@ static int parse_primary(AVExpr **e, Parser *p)
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}
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}
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for(i=0; p->func2_names && p->func2_names[i]; i++){
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if(strmatch(next, p->func2_names[i])){
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for (i=0; p->func2_names && p->func2_names[i]; i++) {
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if (strmatch(next, p->func2_names[i])) {
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d->a.func2 = p->funcs2[i];
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d->type = e_func2;
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*e = d;
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@ -296,8 +299,9 @@ static int parse_primary(AVExpr **e, Parser *p)
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return 0;
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}
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static AVExpr * new_eval_expr(int type, int value, AVExpr *p0, AVExpr *p1){
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AVExpr * e = av_mallocz(sizeof(AVExpr));
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static AVExpr *new_eval_expr(int type, int value, AVExpr *p0, AVExpr *p1)
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{
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AVExpr *e = av_mallocz(sizeof(AVExpr));
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if (!e)
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return NULL;
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e->type =type ;
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@ -347,7 +351,7 @@ static int parse_term(AVExpr **e, Parser *p)
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AVExpr *e0, *e1, *e2;
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if ((ret = parse_factor(&e0, p)) < 0)
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return ret;
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while(p->s[0]=='*' || p->s[0]=='/'){
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while (p->s[0]=='*' || p->s[0]=='/') {
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int c= *p->s++;
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e1 = e0;
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if ((ret = parse_factor(&e2, p)) < 0) {
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@ -371,7 +375,7 @@ static int parse_subexpr(AVExpr **e, Parser *p)
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AVExpr *e0, *e1, *e2;
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if ((ret = parse_term(&e0, p)) < 0)
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return ret;
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while(*p->s == '+' || *p->s == '-') {
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while (*p->s == '+' || *p->s == '-') {
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e1 = e0;
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if ((ret = parse_term(&e2, p)) < 0) {
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ff_free_expr(e1);
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@ -393,13 +397,13 @@ static int parse_expr(AVExpr **e, Parser *p)
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{
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int ret;
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AVExpr *e0, *e1, *e2;
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if(p->stack_index <= 0) //protect against stack overflows
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if (p->stack_index <= 0) //protect against stack overflows
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return AVERROR(EINVAL);
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p->stack_index--;
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if ((ret = parse_subexpr(&e0, p)) < 0)
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return ret;
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while(*p->s == ';') {
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while (*p->s == ';') {
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e1 = e0;
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if ((ret = parse_subexpr(&e2, p)) < 0) {
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ff_free_expr(e1);
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@ -419,7 +423,8 @@ static int parse_expr(AVExpr **e, Parser *p)
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return 0;
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}
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static int verify_expr(AVExpr * e) {
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static int verify_expr(AVExpr *e)
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{
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if (!e) return 0;
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switch (e->type) {
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case e_value:
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@ -476,7 +481,8 @@ end:
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return ret;
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}
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double ff_eval_expr(AVExpr *e, const double *const_values, void *opaque) {
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double ff_eval_expr(AVExpr *e, const double *const_values, void *opaque)
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{
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Parser p;
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p.const_values = const_values;
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@ -504,17 +510,18 @@ int ff_parse_and_eval_expr(double *d, const char *s,
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#ifdef TEST
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#undef printf
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static double const_values[]={
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static double const_values[] = {
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M_PI,
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M_E,
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0
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};
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static const char *const_names[]={
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static const char *const_names[] = {
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"PI",
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"E",
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0
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};
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int main(void){
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int main(void)
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{
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int i;
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double d;
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ff_parse_and_eval_expr(&d, "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)", const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, NULL);
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@ -522,7 +529,7 @@ int main(void){
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ff_parse_and_eval_expr(&d, "80G/80Gi", const_names, const_values, NULL, NULL, NULL, NULL, NULL, NULL);
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printf("%f == 0.931322575\n", d);
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for(i=0; i<1050; i++){
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for (i=0; i<1050; i++) {
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START_TIMER
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ff_parse_and_eval_expr(&d, "1+(5-2)^(3-1)+1/2+sin(PI)-max(-2.2,-3.1)", const_names, const_values, NULL, NULL, NULL, NULL, NULL, 0, NULL);
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STOP_TIMER("ff_parse_and_eval_expr")
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