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c8df1799d9
mpv/core/m_option.c
wm4 c8df1799d9 m_option: allow quoted positional parameters for -vf 
This allows things like:

    '--vf=lavfi="gradfun=20:30"'

Adjust the documentation for vf_lavfi to make the example less verbose.
As an unrelated change, add a general description to vf_lavfi.
2013-04-23 14:10:43 +02:00

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/*
* This file is part of MPlayer.
*
* MPlayer is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* MPlayer 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/// \file
/// \ingroup Options
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdio.h>
#include <stdarg.h>
#include <limits.h>
#include <inttypes.h>
#include <unistd.h>
#include <assert.h>
#include <libavutil/common.h>
#include <libavutil/avstring.h>
#include "talloc.h"
#include "core/mp_common.h"
#include "core/m_option.h"
#include "core/mp_msg.h"
#include "stream/url.h"
char *m_option_strerror(int code)
{
switch (code) {
case M_OPT_UNKNOWN:
return mp_gtext("option not found");
case M_OPT_MISSING_PARAM:
return mp_gtext("option requires parameter");
case M_OPT_INVALID:
return mp_gtext("option parameter could not be parsed");
case M_OPT_OUT_OF_RANGE:
return mp_gtext("parameter is outside values allowed for option");
case M_OPT_DISALLOW_PARAM:
return mp_gtext("option doesn't take a parameter");
case M_OPT_PARSER_ERR:
default:
return mp_gtext("parser error");
}
}
int m_option_required_params(const m_option_t *opt)
{
if (((opt->flags & M_OPT_OPTIONAL_PARAM) ||
(opt->type->flags & M_OPT_TYPE_OPTIONAL_PARAM)))
return 0;
return 1;
}
static const struct m_option *m_option_list_findb(const struct m_option *list,
struct bstr name)
{
for (int i = 0; list[i].name; i++) {
struct bstr lname = bstr0(list[i].name);
if ((list[i].type->flags & M_OPT_TYPE_ALLOW_WILDCARD)
&& bstr_endswith0(lname, "*")) {
lname.len--;
if (bstrcasecmp(bstr_splice(name, 0, lname.len), lname) == 0)
return &list[i];
} else if (bstrcasecmp(lname, name) == 0)
return &list[i];
}
return NULL;
}
const m_option_t *m_option_list_find(const m_option_t *list, const char *name)
{
return m_option_list_findb(list, bstr0(name));
}
// Default function that just does a memcpy
static void copy_opt(const m_option_t *opt, void *dst, const void *src)
{
if (dst && src)
memcpy(dst, src, opt->type->size);
}
// Flag
#define VAL(x) (*(int *)(x))
static int clamp_flag(const m_option_t *opt, void *val)
{
if (VAL(val) == opt->min || VAL(val) == opt->max)
return 0;
VAL(val) = opt->min;
return M_OPT_OUT_OF_RANGE;
}
static int parse_flag(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len) {
if (!bstrcasecmp0(param, "yes")) {
if (dst)
VAL(dst) = opt->max;
return 1;
}
if (!bstrcasecmp0(param, "no")) {
if (dst)
VAL(dst) = opt->min;
return 1;
}
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Invalid parameter for %.*s flag: %.*s\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
} else {
if (dst)
VAL(dst) = opt->max;
return 0;
}
}
static char *print_flag(const m_option_t *opt, const void *val)
{
if (VAL(val) == opt->min)
return talloc_strdup(NULL, "no");
else
return talloc_strdup(NULL, "yes");
}
static void add_flag(const m_option_t *opt, void *val, double add, bool wrap)
{
if (fabs(add) < 0.5)
return;
bool state = VAL(val) != opt->min;
state = wrap ? !state : add > 0;
VAL(val) = state ? opt->max : opt->min;
}
const m_option_type_t m_option_type_flag = {
// need yes or no in config files
.name = "Flag",
.size = sizeof(int),
.flags = M_OPT_TYPE_OPTIONAL_PARAM,
.parse = parse_flag,
.print = print_flag,
.copy = copy_opt,
.add = add_flag,
.clamp = clamp_flag,
};
// Single-value, write-only flag
static int parse_store(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0 || bstrcasecmp0(param, "yes") == 0) {
if (dst)
VAL(dst) = opt->max;
return 0;
} else {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Invalid parameter for %.*s flag: %.*s\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_DISALLOW_PARAM;
}
}
const m_option_type_t m_option_type_store = {
// can only be activated
.name = "Flag",
.size = sizeof(int),
.flags = M_OPT_TYPE_OPTIONAL_PARAM,
.parse = parse_store,
};
// Same for float types
#undef VAL
#define VAL(x) (*(float *)(x))
static int parse_store_float(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0 || bstrcasecmp0(param, "yes") == 0) {
if (dst)
VAL(dst) = opt->max;
return 0;
} else {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Invalid parameter for %.*s flag: %.*s\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_DISALLOW_PARAM;
}
}
const m_option_type_t m_option_type_float_store = {
// can only be activated
.name = "Flag",
.size = sizeof(float),
.flags = M_OPT_TYPE_OPTIONAL_PARAM,
.parse = parse_store_float,
};
// Integer
#undef VAL
static int clamp_longlong(const m_option_t *opt, void *val)
{
long long v = *(long long *)val;
int r = 0;
if ((opt->flags & M_OPT_MAX) && (v > opt->max)) {
v = opt->max;
r = M_OPT_OUT_OF_RANGE;
}
if ((opt->flags & M_OPT_MIN) && (v < opt->min)) {
v = opt->min;
r = M_OPT_OUT_OF_RANGE;
}
*(long long *)val = v;
return r;
}
static int parse_longlong(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0)
return M_OPT_MISSING_PARAM;
struct bstr rest;
long long tmp_int = bstrtoll(param, &rest, 10);
if (rest.len)
tmp_int = bstrtoll(param, &rest, 0);
if (rest.len) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %.*s option must be an integer: %.*s\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
}
if ((opt->flags & M_OPT_MIN) && (tmp_int < opt->min)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %.*s option must be >= %d: %.*s\n",
BSTR_P(name), (int) opt->min, BSTR_P(param));
return M_OPT_OUT_OF_RANGE;
}
if ((opt->flags & M_OPT_MAX) && (tmp_int > opt->max)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %.*s option must be <= %d: %.*s\n",
BSTR_P(name), (int) opt->max, BSTR_P(param));
return M_OPT_OUT_OF_RANGE;
}
if (dst)
*(long long *)dst = tmp_int;
return 1;
}
static int clamp_int(const m_option_t *opt, void *val)
{
long long tmp = *(int *)val;
int r = clamp_longlong(opt, &tmp);
*(int *)val = tmp;
return r;
}
static int clamp_int64(const m_option_t *opt, void *val)
{
long long tmp = *(int64_t *)val;
int r = clamp_longlong(opt, &tmp);
*(int64_t *)val = tmp;
return r;
}
static int parse_int(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
long long tmp;
int r = parse_longlong(opt, name, param, &tmp);
if (r >= 0 && dst)
*(int *)dst = tmp;
return r;
}
static int parse_int64(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
long long tmp;
int r = parse_longlong(opt, name, param, &tmp);
if (r >= 0 && dst)
*(int64_t *)dst = tmp;
return r;
}
static char *print_int(const m_option_t *opt, const void *val)
{
if (opt->type->size == sizeof(int64_t))
return talloc_asprintf(NULL, "%"PRId64, *(const int64_t *)val);
return talloc_asprintf(NULL, "%d", *(const int *)val);
}
static void add_int64(const m_option_t *opt, void *val, double add, bool wrap)
{
int64_t v = *(int64_t *)val;
v = v + add;
bool is64 = opt->type->size == sizeof(int64_t);
int64_t nmin = is64 ? INT64_MIN : INT_MIN;
int64_t nmax = is64 ? INT64_MAX : INT_MAX;
int64_t min = (opt->flags & M_OPT_MIN) ? opt->min : nmin;
int64_t max = (opt->flags & M_OPT_MAX) ? opt->max : nmax;
if (v < min)
v = wrap ? max : min;
if (v > max)
v = wrap ? min : max;
*(int64_t *)val = v;
}
static void add_int(const m_option_t *opt, void *val, double add, bool wrap)
{
int64_t tmp = *(int *)val;
add_int64(opt, &tmp, add, wrap);
*(int *)val = tmp;
}
const m_option_type_t m_option_type_int = {
.name = "Integer",
.size = sizeof(int),
.parse = parse_int,
.print = print_int,
.copy = copy_opt,
.add = add_int,
.clamp = clamp_int,
};
const m_option_type_t m_option_type_int64 = {
.name = "Integer64",
.size = sizeof(int64_t),
.parse = parse_int64,
.print = print_int,
.copy = copy_opt,
.add = add_int64,
.clamp = clamp_int64,
};
static int parse_intpair(const struct m_option *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0)
return M_OPT_MISSING_PARAM;
struct bstr s = param;
int end = -1;
int start = bstrtoll(s, &s, 10);
if (s.len == param.len)
goto bad;
if (s.len > 0) {
if (!bstr_startswith0(s, "-"))
goto bad;
s = bstr_cut(s, 1);
}
if (s.len > 0)
end = bstrtoll(s, &s, 10);
if (s.len > 0)
goto bad;
if (dst) {
int *p = dst;
p[0] = start;
p[1] = end;
}
return 1;
bad:
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Invalid integer range "
"specification for option %.*s: %.*s\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
}
const struct m_option_type m_option_type_intpair = {
.name = "Int[-Int]",
.size = sizeof(int[2]),
.parse = parse_intpair,
.copy = copy_opt,
};
static int clamp_choice(const m_option_t *opt, void *val)
{
int v = *(int *)val;
if ((opt->flags & M_OPT_MIN) && (opt->flags & M_OPT_MAX)) {
if (v >= opt->min && v <= opt->max)
return 0;
}
;
for (struct m_opt_choice_alternatives *alt = opt->priv; alt->name; alt++) {
if (alt->value == v)
return 0;
}
return M_OPT_INVALID;
}
static int parse_choice(const struct m_option *opt, struct bstr name,
struct bstr param, void *dst)
{
struct m_opt_choice_alternatives *alt = opt->priv;
for ( ; alt->name; alt++)
if (!bstrcasecmp0(param, alt->name))
break;
if (!alt->name) {
if (param.len == 0)
return M_OPT_MISSING_PARAM;
if ((opt->flags & M_OPT_MIN) && (opt->flags & M_OPT_MAX)) {
long long val;
if (parse_longlong(opt, name, param, &val) == 1) {
if (dst)
*(int *)dst = val;
return 1;
}
}
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Invalid value for option %.*s: %.*s\n",
BSTR_P(name), BSTR_P(param));
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Valid values are:");
for (alt = opt->priv; alt->name; alt++)
mp_msg(MSGT_CFGPARSER, MSGL_ERR, " %s", alt->name);
if ((opt->flags & M_OPT_MIN) && (opt->flags & M_OPT_MAX))
mp_msg(MSGT_CFGPARSER, MSGL_ERR, " %g-%g", opt->min, opt->max);
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "\n");
return M_OPT_INVALID;
}
if (dst)
*(int *)dst = alt->value;
return 1;
}
static char *print_choice(const m_option_t *opt, const void *val)
{
int v = *(int *)val;
struct m_opt_choice_alternatives *alt;
for (alt = opt->priv; alt->name; alt++)
if (alt->value == v)
return talloc_strdup(NULL, alt->name);
if ((opt->flags & M_OPT_MIN) && (opt->flags & M_OPT_MAX)) {
if (v >= opt->min && v <= opt->max)
return talloc_asprintf(NULL, "%d", v);
}
abort();
}
static void choice_get_min_max(const struct m_option *opt, int *min, int *max)
{
assert(opt->type == &m_option_type_choice);
*min = INT_MAX;
*max = INT_MIN;
for (struct m_opt_choice_alternatives *alt = opt->priv; alt->name; alt++) {
*min = FFMIN(*min, alt->value);
*max = FFMAX(*max, alt->value);
}
if ((opt->flags & M_OPT_MIN) && (opt->flags & M_OPT_MAX)) {
*min = FFMIN(*min, opt->min);
*max = FFMAX(*max, opt->max);
}
}
static void check_choice(int dir, int val, bool *found, int *best, int choice)
{
if ((dir == -1 && (!(*found) || choice > (*best)) && choice < val) ||
(dir == +1 && (!(*found) || choice < (*best)) && choice > val))
{
*found = true;
*best = choice;
}
}
static void add_choice(const m_option_t *opt, void *val, double add, bool wrap)
{
assert(opt->type == &m_option_type_choice);
int dir = add > 0 ? +1 : -1;
bool found = false;
int ival = *(int *)val;
int best = 0; // init. value unused
if (fabs(add) < 0.5)
return;
if ((opt->flags & M_OPT_MIN) && (opt->flags & M_OPT_MAX)) {
int newval = ival + add;
if (ival >= opt->min && ival <= opt->max &&
newval >= opt->min && newval <= opt->max)
{
found = true;
best = newval;
} else {
check_choice(dir, ival, &found, &best, opt->min);
check_choice(dir, ival, &found, &best, opt->max);
}
}
for (struct m_opt_choice_alternatives *alt = opt->priv; alt->name; alt++)
check_choice(dir, ival, &found, &best, alt->value);
if (!found) {
int min, max;
choice_get_min_max(opt, &min, &max);
best = (dir == -1) ^ wrap ? min : max;
}
*(int *)val = best;
}
const struct m_option_type m_option_type_choice = {
.name = "String", // same as arbitrary strings in option list for now
.size = sizeof(int),
.parse = parse_choice,
.print = print_choice,
.copy = copy_opt,
.add = add_choice,
.clamp = clamp_choice,
};
// Float
#undef VAL
#define VAL(x) (*(double *)(x))
static int clamp_double(const m_option_t *opt, void *val)
{
double v = VAL(val);
int r = 0;
if ((opt->flags & M_OPT_MAX) && (v > opt->max)) {
v = opt->max;
r = M_OPT_OUT_OF_RANGE;
}
if ((opt->flags & M_OPT_MIN) && (v < opt->min)) {
v = opt->min;
r = M_OPT_OUT_OF_RANGE;
}
if (!isfinite(v)) {
v = opt->min;
r = M_OPT_OUT_OF_RANGE;
}
VAL(val) = v;
return r;
}
static int parse_double(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0)
return M_OPT_MISSING_PARAM;
struct bstr rest;
double tmp_float = bstrtod(param, &rest);
if (bstr_eatstart0(&rest, ":") || bstr_eatstart0(&rest, "/"))
tmp_float /= bstrtod(rest, &rest);
if (rest.len) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %.*s option must be a floating point number or a "
"ratio (numerator[:/]denominator): %.*s\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
}
if (opt->flags & M_OPT_MIN)
if (tmp_float < opt->min) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %.*s option must be >= %f: %.*s\n",
BSTR_P(name), opt->min, BSTR_P(param));
return M_OPT_OUT_OF_RANGE;
}
if (opt->flags & M_OPT_MAX)
if (tmp_float > opt->max) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %.*s option must be <= %f: %.*s\n",
BSTR_P(name), opt->max, BSTR_P(param));
return M_OPT_OUT_OF_RANGE;
}
if (!isfinite(tmp_float)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"The %.*s option must be a finite number: %.*s\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_OUT_OF_RANGE;
}
if (dst)
VAL(dst) = tmp_float;
return 1;
}
static char *print_double(const m_option_t *opt, const void *val)
{
return talloc_asprintf(NULL, "%f", VAL(val));
}
static char *print_double_f3(const m_option_t *opt, const void *val)
{
return talloc_asprintf(NULL, "%.3f", VAL(val));
}
static void add_double(const m_option_t *opt, void *val, double add, bool wrap)
{
double v = VAL(val);
v = v + add;
double min = (opt->flags & M_OPT_MIN) ? opt->min : -INFINITY;
double max = (opt->flags & M_OPT_MAX) ? opt->max : +INFINITY;
if (v < min)
v = wrap ? max : min;
if (v > max)
v = wrap ? min : max;
VAL(val) = v;
}
const m_option_type_t m_option_type_double = {
// double precision float or ratio (numerator[:/]denominator)
.name = "Double",
.size = sizeof(double),
.parse = parse_double,
.print = print_double,
.pretty_print = print_double_f3,
.copy = copy_opt,
.clamp = clamp_double,
};
#undef VAL
#define VAL(x) (*(float *)(x))
static int clamp_float(const m_option_t *opt, void *val)
{
double tmp = VAL(val);
int r = clamp_double(opt, &tmp);
VAL(val) = tmp;
return r;
}
static int parse_float(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
double tmp;
int r = parse_double(opt, name, param, &tmp);
if (r == 1 && dst)
VAL(dst) = tmp;
return r;
}
static char *print_float(const m_option_t *opt, const void *val)
{
return talloc_asprintf(NULL, "%f", VAL(val));
}
static char *print_float_f3(const m_option_t *opt, const void *val)
{
return talloc_asprintf(NULL, "%.3f", VAL(val));
}
static void add_float(const m_option_t *opt, void *val, double add, bool wrap)
{
double tmp = VAL(val);
add_double(opt, &tmp, add, wrap);
VAL(val) = tmp;
}
const m_option_type_t m_option_type_float = {
// floating point number or ratio (numerator[:/]denominator)
.name = "Float",
.size = sizeof(float),
.parse = parse_float,
.print = print_float,
.pretty_print = print_float_f3,
.copy = copy_opt,
.add = add_float,
.clamp = clamp_float,
};
///////////// String
#undef VAL
#define VAL(x) (*(char **)(x))
static char *unescape_string(void *talloc_ctx, bstr str)
{
char *res = talloc_strdup(talloc_ctx, "");
while (str.len) {
bstr rest;
bool esc = bstr_split_tok(str, "\\", &str, &rest);
res = talloc_strndup_append_buffer(res, str.start, str.len);
if (esc) {
if (!mp_parse_escape(&rest, &res)) {
talloc_free(res);
return NULL;
}
}
str = rest;
}
return res;
}
static char *escape_string(char *str0)
{
char *res = talloc_strdup(NULL, "");
bstr str = bstr0(str0);
while (str.len) {
bstr rest;
bool esc = bstr_split_tok(str, "\\", &str, &rest);
res = talloc_strndup_append_buffer(res, str.start, str.len);
if (esc)
res = talloc_strdup_append_buffer(res, "\\\\");
str = rest;
}
return res;
}
static int clamp_str(const m_option_t *opt, void *val)
{
char *v = VAL(val);
int len = v ? strlen(v) : 0;
if ((opt->flags & M_OPT_MIN) && (len < opt->min))
return M_OPT_OUT_OF_RANGE;
if ((opt->flags & M_OPT_MAX) && (len > opt->max))
return M_OPT_OUT_OF_RANGE;
return 0;
}
static int parse_str(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
int r = 1;
void *tmp = talloc_new(NULL);
if (param.start == NULL) {
r = M_OPT_MISSING_PARAM;
goto exit;
}
if (opt->flags & M_OPT_PARSE_ESCAPES) {
char *res = unescape_string(tmp, param);
if (!res) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Parameter has broken escapes: %.*s\n", BSTR_P(param));
r = M_OPT_INVALID;
goto exit;
}
param = bstr0(res);
}
if ((opt->flags & M_OPT_MIN) && (param.len < opt->min)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Parameter must be >= %d chars: %.*s\n",
(int) opt->min, BSTR_P(param));
r = M_OPT_OUT_OF_RANGE;
goto exit;
}
if ((opt->flags & M_OPT_MAX) && (param.len > opt->max)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Parameter must be <= %d chars: %.*s\n",
(int) opt->max, BSTR_P(param));
r = M_OPT_OUT_OF_RANGE;
goto exit;
}
if (dst) {
talloc_free(VAL(dst));
VAL(dst) = bstrdup0(NULL, param);
}
exit:
talloc_free(tmp);
return r;
}
static char *print_str(const m_option_t *opt, const void *val)
{
bool need_escape = opt->flags & M_OPT_PARSE_ESCAPES;
char *s = val ? VAL(val) : NULL;
return s ? (need_escape ? escape_string(s) : talloc_strdup(NULL, s)) : NULL;
}
static void copy_str(const m_option_t *opt, void *dst, const void *src)
{
if (dst && src) {
talloc_free(VAL(dst));
VAL(dst) = talloc_strdup(NULL, VAL(src));
}
}
static void free_str(void *src)
{
if (src && VAL(src)) {
talloc_free(VAL(src));
VAL(src) = NULL;
}
}
const m_option_type_t m_option_type_string = {
.name = "String",
.size = sizeof(char *),
.flags = M_OPT_TYPE_DYNAMIC,
.parse = parse_str,
.print = print_str,
.copy = copy_str,
.free = free_str,
.clamp = clamp_str,
};
//////////// String list
#undef VAL
#define VAL(x) (*(char ***)(x))
#define OP_NONE 0
#define OP_ADD 1
#define OP_PRE 2
#define OP_DEL 3
#define OP_CLR 4
static void free_str_list(void *dst)
{
char **d;
int i;
if (!dst || !VAL(dst))
return;
d = VAL(dst);
for (i = 0; d[i] != NULL; i++)
talloc_free(d[i]);
talloc_free(d);
VAL(dst) = NULL;
}
static int str_list_add(char **add, int n, void *dst, int pre)
{
if (!dst)
return M_OPT_PARSER_ERR;
char **lst = VAL(dst);
int ln;
for (ln = 0; lst && lst[ln]; ln++)
/**/;
lst = talloc_realloc(NULL, lst, char *, n + ln + 1);
if (pre) {
memmove(&lst[n], lst, ln * sizeof(char *));
memcpy(lst, add, n * sizeof(char *));
} else
memcpy(&lst[ln], add, n * sizeof(char *));
// (re-)add NULL-termination
lst[ln + n] = NULL;
talloc_free(add);
VAL(dst) = lst;
return 1;
}
static int str_list_del(char **del, int n, void *dst)
{
char **lst, *ep;
int i, ln, s;
long idx;
if (!dst)
return M_OPT_PARSER_ERR;
lst = VAL(dst);
for (ln = 0; lst && lst[ln]; ln++)
/**/;
s = ln;
for (i = 0; del[i] != NULL; i++) {
idx = strtol(del[i], &ep, 0);
if (*ep) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Invalid index: %s\n", del[i]);
talloc_free(del[i]);
continue;
}
talloc_free(del[i]);
if (idx < 0 || idx >= ln) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Index %ld is out of range.\n", idx);
continue;
} else if (!lst[idx])
continue;
talloc_free(lst[idx]);
lst[idx] = NULL;
s--;
}
talloc_free(del);
if (s == 0) {
talloc_free(lst);
VAL(dst) = NULL;
return 1;
}
// Don't bother shrinking the list allocation
for (i = 0, n = 0; i < ln; i++) {
if (!lst[i])
continue;
lst[n] = lst[i];
n++;
}
lst[s] = NULL;
return 1;
}
static struct bstr get_nextsep(struct bstr *ptr, char sep, bool modify)
{
struct bstr str = *ptr;
struct bstr orig = str;
for (;;) {
int idx = bstrchr(str, sep);
if (idx > 0 && str.start[idx - 1] == '\\') {
if (modify) {
memmove(str.start + idx - 1, str.start + idx, str.len - idx);
str.len--;
str = bstr_cut(str, idx);
} else
str = bstr_cut(str, idx + 1);
} else {
str = bstr_cut(str, idx < 0 ? str.len : idx);
break;
}
}
*ptr = str;
return bstr_splice(orig, 0, str.start - orig.start);
}
static int parse_str_list(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
char **res;
int op = OP_NONE;
int len = strlen(opt->name);
if (opt->name[len - 1] == '*' && (name.len > len - 1)) {
struct bstr suffix = bstr_cut(name, len - 1);
if (bstrcasecmp0(suffix, "-add") == 0)
op = OP_ADD;
else if (bstrcasecmp0(suffix, "-pre") == 0)
op = OP_PRE;
else if (bstrcasecmp0(suffix, "-del") == 0)
op = OP_DEL;
else if (bstrcasecmp0(suffix, "-clr") == 0)
op = OP_CLR;
else
return M_OPT_UNKNOWN;
}
// Clear the list ??
if (op == OP_CLR) {
if (dst)
free_str_list(dst);
return 0;
}
// All other ops need a param
if (param.len == 0)
return M_OPT_MISSING_PARAM;
// custom type for "profile" calls this but uses ->priv for something else
char separator = opt->type == &m_option_type_string_list && opt->priv ?
*(char *)opt->priv : OPTION_LIST_SEPARATOR;
int n = 0;
struct bstr str = param;
while (str.len) {
get_nextsep(&str, separator, 0);
str = bstr_cut(str, 1);
n++;
}
if (n == 0)
return M_OPT_INVALID;
if (((opt->flags & M_OPT_MIN) && (n < opt->min)) ||
((opt->flags & M_OPT_MAX) && (n > opt->max)))
return M_OPT_OUT_OF_RANGE;
if (!dst)
return 1;
res = talloc_array(NULL, char *, n + 2);
str = bstrdup(NULL, param);
char *ptr = str.start;
n = 0;
while (1) {
struct bstr el = get_nextsep(&str, separator, 1);
res[n] = bstrdup0(NULL, el);
n++;
if (!str.len)
break;
str = bstr_cut(str, 1);
}
res[n] = NULL;
talloc_free(ptr);
switch (op) {
case OP_ADD:
return str_list_add(res, n, dst, 0);
case OP_PRE:
return str_list_add(res, n, dst, 1);
case OP_DEL:
return str_list_del(res, n, dst);
}
if (VAL(dst))
free_str_list(dst);
VAL(dst) = res;
return 1;
}
static void copy_str_list(const m_option_t *opt, void *dst, const void *src)
{
int n;
char **d, **s;
if (!(dst && src))
return;
s = VAL(src);
if (VAL(dst))
free_str_list(dst);
if (!s) {
VAL(dst) = NULL;
return;
}
for (n = 0; s[n] != NULL; n++)
/* NOTHING */;
d = talloc_array(NULL, char *, n + 1);
for (; n >= 0; n--)
d[n] = talloc_strdup(NULL, s[n]);
VAL(dst) = d;
}
static char *print_str_list(const m_option_t *opt, const void *src)
{
char **lst = NULL;
char *ret = NULL;
if (!(src && VAL(src)))
return NULL;
lst = VAL(src);
for (int i = 0; lst[i]; i++) {
if (ret)
ret = talloc_strdup_append_buffer(ret, ",");
ret = talloc_strdup_append_buffer(ret, lst[i]);
}
return ret;
}
const m_option_type_t m_option_type_string_list = {
/* A list of strings separated by ','.
* Option with a name ending in '*' permits using the following suffixes:
* -add: Add the given parameters at the end of the list.
* -pre: Add the given parameters at the beginning of the list.
* -del: Remove the entry at the given indices.
* -clr: Clear the list.
* e.g: -vf-add flip,mirror -vf-del 2,5
*/
.name = "String list",
.size = sizeof(char **),
.flags = M_OPT_TYPE_DYNAMIC | M_OPT_TYPE_ALLOW_WILDCARD,
.parse = parse_str_list,
.print = print_str_list,
.copy = copy_str_list,
.free = free_str_list,
};
/////////////////// Print
static int parse_print(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (opt->type == CONF_TYPE_PRINT) {
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "%s", mp_gtext(opt->p));
} else {
char *name0 = bstrdup0(NULL, name);
char *param0 = bstrdup0(NULL, param);
int r = ((m_opt_func_full_t) opt->p)(opt, name0, param0);
talloc_free(name0);
talloc_free(param0);
return r;
}
if (opt->priv == NULL)
return M_OPT_EXIT;
return 0;
}
const m_option_type_t m_option_type_print = {
.name = "Print",
.flags = M_OPT_TYPE_OPTIONAL_PARAM,
.parse = parse_print,
};
const m_option_type_t m_option_type_print_func_param = {
.name = "Print",
.flags = M_OPT_TYPE_ALLOW_WILDCARD,
.parse = parse_print,
};
const m_option_type_t m_option_type_print_func = {
.name = "Print",
.flags = M_OPT_TYPE_ALLOW_WILDCARD | M_OPT_TYPE_OPTIONAL_PARAM,
.parse = parse_print,
};
/////////////////////// Subconfig
#undef VAL
#define VAL(x) (*(char ***)(x))
// Read s sub-option name, or a positional sub-opt value.
// Return 0 on succes, M_OPT_ error code otherwise.
// optname is for error reporting.
static int read_subparam(bstr optname, bstr *str, bstr *out_subparam)
{
bstr p = *str;
bstr subparam = {0};
if (bstr_eatstart0(&p, "\"")) {
int optlen = bstrcspn(p, "\"");
subparam = bstr_splice(p, 0, optlen);
p = bstr_cut(p, optlen);
if (!bstr_startswith0(p, "\"")) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Terminating '\"' missing for '%.*s'\n",
BSTR_P(optname));
return M_OPT_INVALID;
}
p = bstr_cut(p, 1);
} else if (bstr_eatstart0(&p, "%")) {
int optlen = bstrtoll(p, &p, 0);
if (!bstr_startswith0(p, "%") || (optlen > p.len - 1)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Invalid length %d for '%.*s'\n",
optlen, BSTR_P(optname));
return M_OPT_INVALID;
}
subparam = bstr_splice(p, 1, optlen + 1);
p = bstr_cut(p, optlen + 1);
} else {
// Skip until the next character that could possibly be a meta
// character in option parsing.
int optlen = bstrcspn(p, ":=,\\%\"'");
subparam = bstr_splice(p, 0, optlen);
p = bstr_cut(p, optlen);
}
*str = p;
*out_subparam = subparam;
return 0;
}
// Return 0 on success, otherwise error code
// On success, set *out_name and *out_val, and advance *str
// out_val.start is NULL if there was no parameter.
// optname is for error reporting.
static int split_subconf(bstr optname, bstr *str, bstr *out_name, bstr *out_val)
{
bstr p = *str;
bstr subparam = {0};
bstr subopt;
int r = read_subparam(optname, &p, &subopt);
if (r < 0)
return r;
if (bstr_eatstart0(&p, "=")) {
r = read_subparam(subopt, &p, &subparam);
if (r < 0)
return r;
}
*str = p;
*out_name = subopt;
*out_val = subparam;
return 0;
}
static int parse_subconf(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
int nr = 0;
char **lst = NULL;
if (param.len == 0)
return M_OPT_MISSING_PARAM;
struct bstr p = param;
while (p.len) {
bstr subopt, subparam;
int r = split_subconf(name, &p, &subopt, &subparam);
if (r < 0)
return r;
if (bstr_startswith0(p, ":"))
p = bstr_cut(p, 1);
else if (p.len > 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Incorrect termination for '%.*s'\n", BSTR_P(subopt));
return M_OPT_INVALID;
}
if (dst) {
lst = talloc_realloc(NULL, lst, char *, 2 * (nr + 2));
lst[2 * nr] = bstrto0(lst, subopt);
lst[2 * nr + 1] = bstrto0(lst, subparam);
memset(&lst[2 * (nr + 1)], 0, 2 * sizeof(char *));
nr++;
}
}
if (dst)
VAL(dst) = lst;
return 1;
}
const m_option_type_t m_option_type_subconfig = {
// The syntax is -option opt1=foo:flag:opt2=blah
.name = "Subconfig",
.flags = M_OPT_TYPE_HAS_CHILD,
.parse = parse_subconf,
};
const m_option_type_t m_option_type_subconfig_struct = {
.name = "Subconfig",
.flags = M_OPT_TYPE_HAS_CHILD | M_OPT_TYPE_USE_SUBSTRUCT,
.parse = parse_subconf,
};
static int parse_color(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0)
return M_OPT_MISSING_PARAM;
bstr val = param;
struct m_color color = {0};
if (bstr_eatstart0(&val, "#")) {
// #[AA]RRGGBB
if (val.len != 6 && val.len != 8)
goto error;
bool has_alpha = val.len == 8;
uint32_t c = bstrtoll(val, &val, 16);
if (val.len)
goto error;
color = (struct m_color) {
(c >> 16) & 0xFF,
(c >> 8) & 0xFF,
c & 0xFF,
has_alpha ? (c >> 24) & 0xFF : 0xFF,
};
} else {
goto error;
}
if (dst)
*((struct m_color *)dst) = color;
return 1;
error:
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: invalid color: '%.*s'\n",
BSTR_P(name), BSTR_P(param));
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Valid colors must be in the form #RRRGGBB or #AARRGGBB (in hex)\n");
return M_OPT_INVALID;
}
const m_option_type_t m_option_type_color = {
.name = "Color",
.size = sizeof(struct m_color),
.parse = parse_color,
};
// Parse a >=0 number starting at s. Set s to the string following the number.
// If the number ends with '%', eat that and set *out_per to true, but only
// if the number is between 0-100; if not, don't eat anything, even the number.
static bool eat_num_per(bstr *s, int *out_num, bool *out_per)
{
bstr rest;
long long v = bstrtoll(*s, &rest, 10);
if (s->len == rest.len || v < INT_MIN || v > INT_MAX)
return false;
*out_num = v;
*out_per = false;
*s = rest;
if (bstr_eatstart0(&rest, "%") && v >= 0 && v <= 100) {
*out_per = true;
*s = rest;
}
return true;
}
static bool parse_geometry_str(struct m_geometry *gm, bstr s)
{
*gm = (struct m_geometry) { .x = INT_MIN, .y = INT_MIN };
if (s.len == 0)
return true;
// Approximate grammar:
// [W[xH]][{+-}X{+-}Y] | [X:Y]
// (meaning: [optional] {one character of} one|alternative)
// Every number can be followed by '%'
int num;
bool per;
#define READ_NUM(F, F_PER) do { \
if (!eat_num_per(&s, &num, &per)) \
goto error; \
gm->F = num; \
gm->F_PER = per; \
} while(0)
#define READ_SIGN(F) do { \
if (bstr_eatstart0(&s, "+")) { \
gm->F = false; \
} else if (bstr_eatstart0(&s, "-")) {\
gm->F = true; \
} else goto error; \
} while(0)
if (bstrchr(s, ':') < 0) {
gm->wh_valid = true;
if (!bstr_startswith0(s, "+") && !bstr_startswith0(s, "-")) {
READ_NUM(w, w_per);
if (bstr_eatstart0(&s, "x"))
READ_NUM(h, h_per);
}
if (s.len > 0) {
gm->xy_valid = true;
READ_SIGN(x_sign);
READ_NUM(x, x_per);
READ_SIGN(y_sign);
READ_NUM(y, y_per);
}
} else {
gm->xy_valid = true;
READ_NUM(x, x_per);
if (!bstr_eatstart0(&s, ":"))
goto error;
READ_NUM(y, y_per);
}
return s.len == 0;
error:
return false;
}
#undef READ_NUM
#undef READ_SIGN
// xpos,ypos: position of the left upper corner
// widw,widh: width and height of the window
// scrw,scrh: width and height of the current screen
// The input parameters should be set to a centered window (default fallbacks).
void m_geometry_apply(int *xpos, int *ypos, int *widw, int *widh,
int scrw, int scrh, struct m_geometry *gm)
{
if (gm->wh_valid) {
int prew = *widw, preh = *widh;
if (gm->w > 0)
*widw = gm->w_per ? scrw * (gm->w / 100.0) : gm->w;
if (gm->h > 0)
*widh = gm->h_per ? scrh * (gm->h / 100.0) : gm->h;
// keep aspect if the other value is not set
double asp = (double)prew / preh;
if (gm->w > 0 && !(gm->h > 0)) {
*widh = *widw / asp;
} else if (!(gm->w > 0) && gm->h > 0) {
*widw = *widh * asp;
}
}
if (gm->xy_valid) {
if (gm->x != INT_MIN) {
*xpos = gm->x;
if (gm->x_per)
*xpos = (scrw - *widw) * (*xpos / 100.0);
if (gm->x_sign)
*xpos = scrw - *widw - *xpos;
}
if (gm->y != INT_MIN) {
*ypos = gm->y;
if (gm->y_per)
*ypos = (scrh - *widh) * (*ypos / 100.0);
if (gm->y_sign)
*ypos = scrh - *widh - *ypos;
}
}
}
static int parse_geometry(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
struct m_geometry gm;
if (!parse_geometry_str(&gm, param))
goto error;
if (dst)
*((struct m_geometry *)dst) = gm;
return 1;
error:
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: invalid geometry: '%.*s'\n",
BSTR_P(name), BSTR_P(param));
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Valid format: [W[%%][xH[%%]]][{+-}X[%%]{+-}Y[%%]] | [X[%%]:Y[%%]]\n");
return M_OPT_INVALID;
}
const m_option_type_t m_option_type_geometry = {
.name = "Window geometry",
.size = sizeof(struct m_geometry),
.parse = parse_geometry,
};
static int parse_size_box(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
struct m_geometry gm;
if (!parse_geometry_str(&gm, param))
goto error;
if (gm.xy_valid)
goto error;
if (dst)
*((struct m_geometry *)dst) = gm;
return 1;
error:
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: invalid size: '%.*s'\n",
BSTR_P(name), BSTR_P(param));
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Valid format: W[%%][xH[%%]] or empty string\n");
return M_OPT_INVALID;
}
const m_option_type_t m_option_type_size_box = {
.name = "Window size",
.size = sizeof(struct m_geometry),
.parse = parse_size_box,
};
#include "video/img_format.h"
static int parse_imgfmt(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0)
return M_OPT_MISSING_PARAM;
if (!bstrcmp0(param, "help")) {
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "Available formats:");
for (int i = 0; mp_imgfmt_list[i].name; i++)
mp_msg(MSGT_CFGPARSER, MSGL_INFO, " %s", mp_imgfmt_list[i].name);
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\n");
return M_OPT_EXIT - 1;
}
unsigned int fmt = mp_imgfmt_from_name(param, false);
if (!fmt) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: unknown format name: '%.*s'\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
}
if (dst)
*((uint32_t *)dst) = fmt;
return 1;
}
const m_option_type_t m_option_type_imgfmt = {
// Please report any missing colorspaces
.name = "Image format",
.size = sizeof(uint32_t),
.parse = parse_imgfmt,
.copy = copy_opt,
};
static int parse_fourcc(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0)
return M_OPT_MISSING_PARAM;
unsigned int value;
if (param.len == 4) {
uint8_t *s = param.start;
value = s[0] | (s[1] << 8) | (s[2] << 16) | (s[3] << 24);
} else {
bstr rest;
value = bstrtoll(param, &rest, 16);
if (rest.len != 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: invalid FourCC: '%.*s'\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
}
}
if (dst)
*((unsigned int *)dst) = value;
return 1;
}
const m_option_type_t m_option_type_fourcc = {
.name = "FourCC",
.size = sizeof(unsigned int),
.parse = parse_fourcc,
.copy = copy_opt,
};
#include "audio/format.h"
static int parse_afmt(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
if (param.len == 0)
return M_OPT_MISSING_PARAM;
if (!bstrcmp0(param, "help")) {
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "Available formats:");
for (int i = 0; af_fmtstr_table[i].name; i++)
mp_msg(MSGT_CFGPARSER, MSGL_INFO, " %s", af_fmtstr_table[i].name);
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\n");
return M_OPT_EXIT - 1;
}
int fmt = af_str2fmt_short(param);
if (fmt == -1) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: unknown format name: '%.*s'\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
}
if (dst)
*((uint32_t *)dst) = fmt;
return 1;
}
const m_option_type_t m_option_type_afmt = {
// Please report any missing formats
.name = "Audio format",
.size = sizeof(uint32_t),
.parse = parse_afmt,
.copy = copy_opt,
};
static int parse_timestring(struct bstr str, double *time, char endchar)
{
int a, b, len;
double d;
*time = 0; /* ensure initialization for error cases */
if (bstr_sscanf(str, "%d:%d:%lf%n", &a, &b, &d, &len) >= 3)
*time = 3600 * a + 60 * b + d;
else if (bstr_sscanf(str, "%d:%lf%n", &a, &d, &len) >= 2)
*time = 60 * a + d;
else if (bstr_sscanf(str, "%lf%n", &d, &len) >= 1)
*time = d;
else
return 0; /* unsupported time format */
if (len < str.len && str.start[len] != endchar)
return 0; /* invalid extra characters at the end */
if (!isfinite(*time))
return 0;
return len;
}
static int parse_time(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
double time;
if (param.len == 0)
return M_OPT_MISSING_PARAM;
if (!parse_timestring(param, &time, 0)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: invalid time: '%.*s'\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
}
if (dst)
*(double *)dst = time;
return 1;
}
static char *pretty_print_time(const m_option_t *opt, const void *val)
{
return mp_format_time(*(double *)val, false);
}
const m_option_type_t m_option_type_time = {
.name = "Time",
.size = sizeof(double),
.parse = parse_time,
.print = print_double,
.pretty_print = pretty_print_time,
.copy = copy_opt,
.add = add_double,
.clamp = clamp_double,
};
// Relative time
static int parse_rel_time(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
struct m_rel_time t = {0};
if (param.len == 0)
return M_OPT_MISSING_PARAM;
// Percent pos
if (bstr_endswith0(param, "%")) {
double percent = bstrtod(bstr_splice(param, 0, -1), &param);
if (param.len == 0 && percent >= 0 && percent <= 100) {
t.type = REL_TIME_PERCENT;
t.pos = percent;
goto out;
}
}
// Chapter pos
if (bstr_startswith0(param, "#")) {
int chapter = bstrtoll(bstr_cut(param, 1), &param, 10);
if (param.len == 0 && chapter >= 1) {
t.type = REL_TIME_CHAPTER;
t.pos = chapter - 1;
goto out;
}
}
bool sign = bstr_eatstart0(&param, "-");
double time;
if (parse_timestring(param, &time, 0)) {
t.type = sign ? REL_TIME_NEGATIVE : REL_TIME_ABSOLUTE;
t.pos = time;
goto out;
}
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: invalid time or position: '%.*s'\n",
BSTR_P(name), BSTR_P(param));
return M_OPT_INVALID;
out:
if (dst)
*(struct m_rel_time *)dst = t;
return 1;
}
const m_option_type_t m_option_type_rel_time = {
.name = "Relative time or percent position",
.size = sizeof(struct m_rel_time),
.parse = parse_rel_time,
.copy = copy_opt,
};
//// Objects (i.e. filters, etc) settings
#include "core/m_struct.h"
#undef VAL
#define VAL(x) (*(m_obj_settings_t **)(x))
static int find_obj_desc(struct bstr name, const m_obj_list_t *l,
const m_struct_t **ret)
{
int i;
char *n;
for (i = 0; l->list[i]; i++) {
n = M_ST_MB(char *, l->list[i], l->name_off);
if (!bstrcmp0(name, n)) {
*ret = M_ST_MB(m_struct_t *, l->list[i], l->desc_off);
return 1;
}
}
return 0;
}
// Consider -vf a=b=c:d=e. This verifies "b"="c" and "d"="e" and that the
// option names/values are correct. Try to determine whether an option
// without '=' sets a flag, or whether it's a positional argument.
static int get_obj_param(bstr opt_name, bstr obj_name, const m_struct_t *desc,
bstr name, bstr val, int *nold, int oldmax,
bstr *out_name, bstr *out_val)
{
const m_option_t *opt = m_option_list_findb(desc->fields, name);
int r;
// va.start != NULL => of the form name=val (not positional)
// If it's just "name", and the associated option exists and is a flag,
// don't accept it as positional argument.
if (val.start || (opt && m_option_required_params(opt) == 0)) {
if (!opt) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: %.*s doesn't have a %.*s parameter.\n",
BSTR_P(opt_name), BSTR_P(obj_name), BSTR_P(name));
return M_OPT_UNKNOWN;
}
r = m_option_parse(opt, name, val, NULL);
if (r < 0) {
if (r > M_OPT_EXIT)
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: "
"Error while parsing %.*s parameter %.*s (%.*s)\n",
BSTR_P(opt_name), BSTR_P(obj_name), BSTR_P(name),
BSTR_P(val));
return r;
}
*out_name = name;
*out_val = val;
return 1;
} else {
val = name;
// positional fields
if (val.len == 0) { // Empty field, count it and go on
(*nold)++;
return 1;
}
if ((*nold) >= oldmax) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: %.*s has only %d params, so you can't give more than %d unnamed params.\n",
BSTR_P(opt_name), BSTR_P(obj_name), oldmax, oldmax);
return M_OPT_OUT_OF_RANGE;
}
opt = &desc->fields[(*nold)];
r = m_option_parse(opt, bstr0(opt->name), val, NULL);
if (r < 0) {
if (r > M_OPT_EXIT)
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: "
"Error while parsing %.*s parameter %s (%.*s)\n",
BSTR_P(opt_name), BSTR_P(obj_name), opt->name,
BSTR_P(val));
return r;
}
*out_name = bstr0(opt->name);
*out_val = val;
(*nold)++;
return 1;
}
}
// Consider -vf a=b:c:d. This parses "b:c:d" into name/value pairs, stored as
// linear array in *_ret. In particular, desc contains what options a the
// object takes, and verifies the option values as well.
static int get_obj_params(struct bstr opt_name, struct bstr name,
struct bstr *pstr, const m_struct_t *desc,
char ***ret)
{
int n = 0, nold = 0, nopts;
char **args = NULL;
int num_args = 0;
int r = 1;
for (nopts = 0; desc->fields[nopts].name; nopts++)
/* NOP */;
while (pstr->len > 0) {
bstr fname, fval;
r = split_subconf(opt_name, pstr, &fname, &fval);
if (r < 0)
goto exit;
if (bstr_equals0(fname, "help"))
goto print_help;
r = get_obj_param(opt_name, name, desc, fname, fval, &nold, nopts,
&fname, &fval);
if (r < 0)
goto exit;
if (ret) {
MP_TARRAY_APPEND(NULL, args, num_args, bstrto0(NULL, fname));
MP_TARRAY_APPEND(NULL, args, num_args, bstrto0(NULL, fval));
}
if (!bstr_eatstart0(pstr, ":"))
break;
}
if (ret) {
if (num_args > 0) {
for (int n = 0; n < 2; n++)
MP_TARRAY_APPEND(NULL, args, num_args, NULL);
*ret = args;
args = NULL;
} else {
*ret = NULL;
}
}
exit:
return r;
print_help: ;
char min[50], max[50];
if (!desc->fields) {
mp_msg(MSGT_CFGPARSER, MSGL_INFO,
"%.*s doesn't have any options.\n\n", BSTR_P(name));
return M_OPT_EXIT - 1;
}
mp_msg(MSGT_CFGPARSER, MSGL_INFO,
"\n Name Type Min Max\n\n");
for (n = 0; desc->fields[n].name; n++) {
const m_option_t *opt = &desc->fields[n];
if (opt->type->flags & M_OPT_TYPE_HAS_CHILD)
continue;
if (opt->flags & M_OPT_MIN)
sprintf(min, "%-8.0f", opt->min);
else
strcpy(min, "No");
if (opt->flags & M_OPT_MAX)
sprintf(max, "%-8.0f", opt->max);
else
strcpy(max, "No");
mp_msg(MSGT_CFGPARSER, MSGL_INFO,
" %-20.20s %-15.15s %-10.10s %-10.10s\n",
opt->name, opt->type->name, min, max);
}
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\n");
return M_OPT_EXIT - 1;
}
// Characters which may appear in a filter name
#define NAMECH "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-"
// Parse one item, e.g. -vf a=b:c:d,e=f:g => parse a=b:c:d into "a" and "b:c:d"
static int parse_obj_settings(struct bstr opt, struct bstr *pstr,
const m_obj_list_t *list,
m_obj_settings_t **_ret, int ret_n)
{
int r;
char **plist = NULL;
const m_struct_t *desc;
m_obj_settings_t *ret = _ret ? *_ret : NULL;
bool has_param = false;
int idx = bstrspn(*pstr, NAMECH);
bstr str = bstr_splice(*pstr, 0, idx);
*pstr = bstr_cut(*pstr, idx);
if (bstr_eatstart0(pstr, "="))
has_param = true;
if (!find_obj_desc(str, list, &desc)) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: %.*s doesn't exist.\n",
BSTR_P(opt), BSTR_P(str));
return M_OPT_INVALID;
}
if (has_param) {
if (!desc) {
// Should perhaps be parsed as escape-able string. But this is a
// compatibility path, so it's not worth the trouble.
int next = bstrcspn(*pstr, ",");
bstr param = bstr_splice(*pstr, 0, next);
*pstr = bstr_cut(*pstr, next);
if (!bstrcmp0(param, "help")) {
mp_msg(MSGT_CFGPARSER, MSGL_INFO,
"Option %.*s: %.*s have no option description.\n",
BSTR_P(opt), BSTR_P(str));
return M_OPT_EXIT - 1;
}
if (_ret) {
plist = talloc_zero_array(NULL, char *, 4);
plist[0] = talloc_strdup(NULL, "_oldargs_");
plist[1] = bstrto0(NULL, param);
}
} else if (desc) {
r = get_obj_params(opt, str, pstr, desc, _ret ? &plist : NULL);
if (r < 0)
return r;
}
}
if (!_ret)
return 1;
ret = talloc_realloc(NULL, ret, struct m_obj_settings, ret_n + 2);
memset(&ret[ret_n], 0, 2 * sizeof(m_obj_settings_t));
ret[ret_n].name = bstrto0(NULL, str);
ret[ret_n].attribs = plist;
*_ret = ret;
return 1;
}
static int obj_settings_list_del(struct bstr opt_name, struct bstr param,
void *dst)
{
char **str_list = NULL;
int r, i, idx_max = 0;
char *rem_id = "_removed_marker_";
char name[100];
assert(opt_name.len < 100);
memcpy(name, opt_name.start, opt_name.len);
name[opt_name.len] = 0;
const m_option_t list_opt = {
name, NULL, CONF_TYPE_STRING_LIST,
0, 0, 0, NULL
};
m_obj_settings_t *obj_list = dst ? VAL(dst) : NULL;
if (dst && !obj_list) {
mp_msg(MSGT_CFGPARSER, MSGL_WARN, "Option %.*s: the list is empty.\n",
BSTR_P(opt_name));
return 1;
} else if (obj_list) {
for (idx_max = 0; obj_list[idx_max].name != NULL; idx_max++)
/* NOP */;
}
r = m_option_parse(&list_opt, opt_name, param, &str_list);
if (r < 0 || !str_list)
return r;
for (r = 0; str_list[r]; r++) {
int id;
char *endptr;
id = strtol(str_list[r], &endptr, 0);
if (endptr == str_list[r]) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: invalid parameter. We need a list of integers which are the indices of the elements to remove.\n", BSTR_P(opt_name));
m_option_free(&list_opt, &str_list);
return M_OPT_INVALID;
}
if (!obj_list)
continue;
if (id >= idx_max || id < -idx_max) {
mp_msg(MSGT_CFGPARSER, MSGL_WARN,
"Option %.*s: Index %d is out of range.\n",
BSTR_P(opt_name), id);
continue;
}
if (id < 0)
id = idx_max + id;
talloc_free(obj_list[id].name);
free_str_list(&(obj_list[id].attribs));
obj_list[id].name = rem_id;
}
if (!dst) {
m_option_free(&list_opt, &str_list);
return 1;
}
for (i = 0; obj_list[i].name; i++) {
while (obj_list[i].name == rem_id) {
memmove(&obj_list[i], &obj_list[i + 1],
sizeof(m_obj_settings_t) * (idx_max - i));
idx_max--;
}
}
obj_list = talloc_realloc(NULL, obj_list, struct m_obj_settings,
idx_max + 1);
VAL(dst) = obj_list;
return 1;
}
static void free_obj_settings_list(void *dst)
{
int n;
m_obj_settings_t *d;
if (!dst || !VAL(dst))
return;
d = VAL(dst);
for (n = 0; d[n].name; n++) {
talloc_free(d[n].name);
free_str_list(&(d[n].attribs));
}
talloc_free(d);
VAL(dst) = NULL;
}
static int parse_obj_settings_list(const m_option_t *opt, struct bstr name,
struct bstr param, void *dst)
{
int len = strlen(opt->name);
m_obj_settings_t *res = NULL, *queue = NULL, *head = NULL;
int op = OP_NONE;
// We need the objects list
if (!opt->priv)
return M_OPT_INVALID;
if (opt->name[len - 1] == '*' && (name.len > len - 1)) {
struct bstr suffix = bstr_cut(name, len - 1);
if (bstrcasecmp0(suffix, "-add") == 0)
op = OP_ADD;
else if (bstrcasecmp0(suffix, "-pre") == 0)
op = OP_PRE;
else if (bstrcasecmp0(suffix, "-del") == 0)
op = OP_DEL;
else if (bstrcasecmp0(suffix, "-clr") == 0)
op = OP_CLR;
else {
char prefix[len];
strncpy(prefix, opt->name, len - 1);
prefix[len - 1] = '\0';
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: unknown postfix %.*s\n"
"Supported postfixes are:\n"
" %s-add\n"
" Append the given list to the current list\n\n"
" %s-pre\n"
" Prepend the given list to the current list\n\n"
" %s-del x,y,...\n"
" Remove the given elements. Take the list element index (starting from 0).\n"
" Negative index can be used (i.e. -1 is the last element)\n\n"
" %s-clr\n"
" Clear the current list.\n",
BSTR_P(name), BSTR_P(suffix), prefix, prefix, prefix, prefix);
return M_OPT_UNKNOWN;
}
}
// Clear the list ??
if (op == OP_CLR) {
if (dst)
free_obj_settings_list(dst);
return 0;
}
if (param.len == 0)
return M_OPT_MISSING_PARAM;
switch (op) {
case OP_ADD:
if (dst)
head = VAL(dst);
break;
case OP_PRE:
if (dst)
queue = VAL(dst);
break;
case OP_DEL:
return obj_settings_list_del(name, param, dst);
case OP_NONE:
if (dst && VAL(dst))
free_obj_settings_list(dst);
break;
default:
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: FIXME\n", BSTR_P(name));
return M_OPT_UNKNOWN;
}
if (!bstrcmp0(param, "help")) {
m_obj_list_t *ol = opt->priv;
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "Available video filters:\n");
for (int n = 0; ol->list[n]; n++)
mp_msg(MSGT_CFGPARSER, MSGL_INFO, " %-15s: %s\n",
M_ST_MB(char *, ol->list[n], ol->name_off),
M_ST_MB(char *, ol->list[n], ol->info_off));
mp_msg(MSGT_CFGPARSER, MSGL_INFO, "\n");
return M_OPT_EXIT - 1;
}
int n = 0;
while (param.len > 0) {
int r = parse_obj_settings(name, &param, opt->priv, dst ? &res : NULL, n);
if (r < 0)
return r;
char sep[2] = {OPTION_LIST_SEPARATOR, 0};
if (param.len > 0 && !bstr_eatstart0(&param, sep))
return M_OPT_INVALID;
n++;
}
if (n == 0)
return M_OPT_INVALID;
if (((opt->flags & M_OPT_MIN) && (n < opt->min)) ||
((opt->flags & M_OPT_MAX) && (n > opt->max)))
return M_OPT_OUT_OF_RANGE;
if (dst) {
if (queue) {
int qsize;
for (qsize = 0; queue[qsize].name; qsize++)
/* NOP */;
res = talloc_realloc(NULL, res, struct m_obj_settings,
qsize + n + 1);
memcpy(&res[n], queue, (qsize + 1) * sizeof(m_obj_settings_t));
n += qsize;
talloc_free(queue);
}
if (head) {
int hsize;
for (hsize = 0; head[hsize].name; hsize++)
/* NOP */;
head = talloc_realloc(NULL, head, struct m_obj_settings,
hsize + n + 1);
memcpy(&head[hsize], res, (n + 1) * sizeof(m_obj_settings_t));
talloc_free(res);
res = head;
}
VAL(dst) = res;
}
return 1;
}
static void copy_obj_settings_list(const m_option_t *opt, void *dst,
const void *src)
{
m_obj_settings_t *d, *s;
int n;
if (!(dst && src))
return;
s = VAL(src);
if (VAL(dst))
free_obj_settings_list(dst);
if (!s)
return;
for (n = 0; s[n].name; n++)
/* NOP */;
d = talloc_array(NULL, struct m_obj_settings, n + 1);
for (n = 0; s[n].name; n++) {
d[n].name = talloc_strdup(NULL, s[n].name);
d[n].attribs = NULL;
copy_str_list(NULL, &(d[n].attribs), &(s[n].attribs));
}
d[n].name = NULL;
d[n].attribs = NULL;
VAL(dst) = d;
}
const m_option_type_t m_option_type_obj_settings_list = {
.name = "Object settings list",
.size = sizeof(m_obj_settings_t *),
.flags = M_OPT_TYPE_DYNAMIC | M_OPT_TYPE_ALLOW_WILDCARD,
.parse = parse_obj_settings_list,
.copy = copy_obj_settings_list,
.free = free_obj_settings_list,
};
static int parse_custom_url(const m_option_t *opt, struct bstr name,
struct bstr url, void *dst)
{
int r;
m_struct_t *desc = opt->priv;
if (!desc) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR, "Option %.*s: Custom URL needs "
"a pointer to a m_struct_t in the priv field.\n", BSTR_P(name));
return M_OPT_PARSER_ERR;
}
// extract the protocol
int idx = bstr_find0(url, "://");
if (idx < 0) {
// Filename only
if (m_option_list_find(desc->fields, "filename")) {
m_struct_set(desc, dst, "filename", url);
return 1;
}
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: URL doesn't have a valid protocol!\n",
BSTR_P(name));
return M_OPT_INVALID;
}
struct bstr ptr1 = bstr_cut(url, idx + 3);
if (m_option_list_find(desc->fields, "string")) {
if (ptr1.len > 0) {
m_struct_set(desc, dst, "string", ptr1);
return 1;
}
}
if (dst && m_option_list_find(desc->fields, "protocol")) {
r = m_struct_set(desc, dst, "protocol", bstr_splice(url, 0, idx));
if (r < 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: Error while setting protocol.\n",
BSTR_P(name));
return r;
}
}
// check if a username:password is given
idx = bstrchr(ptr1, '/');
if (idx < 0)
idx = ptr1.len;
struct bstr hostpart = bstr_splice(ptr1, 0, idx);
struct bstr path = bstr_cut(ptr1, idx);
idx = bstrchr(hostpart, '@');
if (idx >= 0) {
struct bstr userpass = bstr_splice(hostpart, 0, idx);
hostpart = bstr_cut(hostpart, idx + 1);
// We got something, at least a username...
if (!m_option_list_find(desc->fields, "username")) {
mp_msg(MSGT_CFGPARSER, MSGL_WARN,
"Option %.*s: This URL doesn't have a username part.\n",
BSTR_P(name));
// skip
} else {
idx = bstrchr(userpass, ':');
if (idx >= 0) {
// We also have a password
if (!m_option_list_find(desc->fields, "password")) {
mp_msg(MSGT_CFGPARSER, MSGL_WARN,
"Option %.*s: This URL doesn't have a password part.\n",
BSTR_P(name));
// skip
} else { // Username and password
if (dst) {
r = m_struct_set(desc, dst, "username",
bstr_splice(userpass, 0, idx));
if (r < 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: Error while setting username.\n",
BSTR_P(name));
return r;
}
r = m_struct_set(desc, dst, "password",
bstr_splice(userpass, idx+1,
userpass.len));
if (r < 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: Error while setting password.\n",
BSTR_P(name));
return r;
}
}
}
} else { // User name only
r = m_struct_set(desc, dst, "username", userpass);
if (r < 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: Error while setting username.\n",
BSTR_P(name));
return r;
}
}
}
}
// Before looking for a port number check if we have an IPv6 type
// numeric address.
// In an IPv6 URL the numeric address should be inside square braces.
int idx1 = bstrchr(hostpart, '[');
int idx2 = bstrchr(hostpart, ']');
struct bstr portstr = hostpart;
bool v6addr = false;
if (idx1 >= 0 && idx2 >= 0 && idx1 < idx2) {
// we have an IPv6 numeric address
portstr = bstr_cut(hostpart, idx2);
hostpart = bstr_splice(hostpart, idx1 + 1, idx2);
v6addr = true;
}
idx = bstrchr(portstr, ':');
if (idx >= 0) {
if (!v6addr)
hostpart = bstr_splice(hostpart, 0, idx);
// We have an URL beginning like http://www.hostname.com:1212
// Get the port number
if (!m_option_list_find(desc->fields, "port")) {
mp_msg(MSGT_CFGPARSER, MSGL_WARN,
"Option %.*s: This URL doesn't have a port part.\n",
BSTR_P(name));
// skip
} else {
if (dst) {
int p = bstrtoll(bstr_cut(portstr, idx + 1), NULL, 0);
char tmp[100];
snprintf(tmp, 99, "%d", p);
r = m_struct_set(desc, dst, "port", bstr0(tmp));
if (r < 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: Error while setting port.\n",
BSTR_P(name));
return r;
}
}
}
}
// Get the hostname
if (hostpart.len > 0) {
if (!m_option_list_find(desc->fields, "hostname")) {
mp_msg(MSGT_CFGPARSER, MSGL_WARN,
"Option %.*s: This URL doesn't have a hostname part.\n",
BSTR_P(name));
// skip
} else {
r = m_struct_set(desc, dst, "hostname", hostpart);
if (r < 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: Error while setting hostname.\n",
BSTR_P(name));
return r;
}
}
}
// Look if a path is given
if (path.len > 1) { // not just "/"
// copy the path/filename in the URL container
if (!m_option_list_find(desc->fields, "filename")) {
mp_msg(MSGT_CFGPARSER, MSGL_WARN,
"Option %.*s: This URL doesn't have a filename part.\n",
BSTR_P(name));
// skip
} else {
if (dst) {
char *fname = bstrdup0(NULL, bstr_cut(path, 1));
url_unescape_string(fname, fname);
r = m_struct_set(desc, dst, "filename", bstr0(fname));
talloc_free(fname);
if (r < 0) {
mp_msg(MSGT_CFGPARSER, MSGL_ERR,
"Option %.*s: Error while setting filename.\n",
BSTR_P(name));
return r;
}
}
}
}
return 1;
}
/// TODO : Write the other needed funcs for 'normal' options
const m_option_type_t m_option_type_custom_url = {
.name = "Custom URL",
.parse = parse_custom_url,
};
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