/*
* 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 2.1 of the License, or (at your option) any later version.
*
* 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* misc parsing utilities
*/
#include <time.h>
#include "avstring.h"
#include "avutil.h"
#include "common.h"
#include "eval.h"
#include "log.h"
/* #include "random_seed.h" */
#include "time_internal.h"
#include "parseutils.h"
#include "fftime.h"
#ifdef TEST
#define av_get_random_seed av_get_random_seed_deterministic
static uint32_t av_get_random_seed_deterministic(void );
#define av_gettime() 1331972053200000
#endif
int av_parse_ratio(AVRational *q, const char *str, int max,
int log_offset, void *log_ctx)
{
char c;
int ret;
if (sscanf(str, "%d:%d%c" , &q->num, &q->den, &c) != 2) {
double d;
ret = av_expr_parse_and_eval(&d, str, NULL, NULL,
NULL, NULL, NULL, NULL,
NULL, log_offset, log_ctx);
if (ret < 0)
return ret;
*q = av_d2q(d, max);
} else {
av_reduce(&q->num, &q->den, q->num, q->den, max);
}
return 0;
}
typedef struct VideoSizeAbbr {
const char *abbr;
int width, height;
} VideoSizeAbbr;
typedef struct VideoRateAbbr {
const char *abbr;
AVRational rate;
} VideoRateAbbr;
static const VideoSizeAbbr video_size_abbrs[] = {
{ "ntsc" , 720, 480 },
{ "pal" , 720, 576 },
{ "qntsc" , 352, 240 }, /* VCD compliant NTSC */
{ "qpal" , 352, 288 }, /* VCD compliant PAL */
{ "sntsc" , 640, 480 }, /* square pixel NTSC */
{ "spal" , 768, 576 }, /* square pixel PAL */
{ "film" , 352, 240 },
{ "ntsc-film" , 352, 240 },
{ "sqcif" , 128, 96 },
{ "qcif" , 176, 144 },
{ "cif" , 352, 288 },
{ "4cif" , 704, 576 },
{ "16cif" , 1408,1152 },
{ "qqvga" , 160, 120 },
{ "qvga" , 320, 240 },
{ "vga" , 640, 480 },
{ "svga" , 800, 600 },
{ "xga" , 1024, 768 },
{ "uxga" , 1600,1200 },
{ "qxga" , 2048,1536 },
{ "sxga" , 1280,1024 },
{ "qsxga" , 2560,2048 },
{ "hsxga" , 5120,4096 },
{ "wvga" , 852, 480 },
{ "wxga" , 1366, 768 },
{ "wsxga" , 1600,1024 },
{ "wuxga" , 1920,1200 },
{ "woxga" , 2560,1600 },
{ "wqhd" , 2560,1440 },
{ "wqsxga" , 3200,2048 },
{ "wquxga" , 3840,2400 },
{ "whsxga" , 6400,4096 },
{ "whuxga" , 7680,4800 },
{ "cga" , 320, 200 },
{ "ega" , 640, 350 },
{ "hd480" , 852, 480 },
{ "hd720" , 1280, 720 },
{ "hd1080" , 1920,1080 },
{ "quadhd" , 2560,1440 },
{ "2k" , 2048,1080 }, /* Digital Cinema System Specification */
{ "2kdci" , 2048,1080 },
{ "2kflat" , 1998,1080 },
{ "2kscope" , 2048, 858 },
{ "4k" , 4096,2160 }, /* Digital Cinema System Specification */
{ "4kdci" , 4096,2160 },
{ "4kflat" , 3996,2160 },
{ "4kscope" , 4096,1716 },
{ "nhd" , 640,360 },
{ "hqvga" , 240,160 },
{ "wqvga" , 400,240 },
{ "fwqvga" , 432,240 },
{ "hvga" , 480,320 },
{ "qhd" , 960,540 },
{ "uhd2160" , 3840,2160 },
{ "uhd4320" , 7680,4320 },
};
static const VideoRateAbbr video_rate_abbrs[]= {
{ "ntsc" , { 30000, 1001 } },
{ "pal" , { 25, 1 } },
{ "qntsc" , { 30000, 1001 } }, /* VCD compliant NTSC */
{ "qpal" , { 25, 1 } }, /* VCD compliant PAL */
{ "sntsc" , { 30000, 1001 } }, /* square pixel NTSC */
{ "spal" , { 25, 1 } }, /* square pixel PAL */
{ "film" , { 24, 1 } },
{ "ntsc-film" , { 24000, 1001 } },
};
static const char *months[12] = {
"january" , "february" , "march" , "april" , "may" , "june" , "july" , "august" ,
"september" , "october" , "november" , "december"
};
int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
{
int i;
int n = FF_ARRAY_ELEMS(video_size_abbrs);
const char *p;
int width = 0, height = 0;
for (i = 0; i < n; i++) {
if (!strcmp(video_size_abbrs[i].abbr, str)) {
width = video_size_abbrs[i].width;
height = video_size_abbrs[i].height;
break ;
}
}
if (i == n) {
width = strtol(str, (void *)&p, 10);
if (*p)
p++;
height = strtol(p, (void *)&p, 10);
/* trailing extraneous data detected, like in 123x345foobar */
if (*p)
return AVERROR(EINVAL);
}
if (width <= 0 || height <= 0)
return AVERROR(EINVAL);
*width_ptr = width;
*height_ptr = height;
return 0;
}
int av_parse_video_rate(AVRational *rate, const char *arg)
{
int i, ret;
int n = FF_ARRAY_ELEMS(video_rate_abbrs);
/* First, we check our abbreviation table */
for (i = 0; i < n; ++i)
if (!strcmp(video_rate_abbrs[i].abbr, arg)) {
*rate = video_rate_abbrs[i].rate;
return 0;
}
/* Then, we try to parse it as fraction */
if ((ret = av_parse_ratio_quiet(rate, arg, 1001000)) < 0)
return ret;
if (!rate->num || !rate->den)
if ((ret = av_parse_ratio_quiet(rate, arg, INT_MAX)) < 0)
return ret;
if (rate->num <= 0 || rate->den <= 0)
return AVERROR(EINVAL);
return 0;
}
typedef struct ColorEntry {
const char *name; ///< a string representing the name of the color
uint8_t rgb_color[3]; ///< RGB values for the color
} ColorEntry;
static const ColorEntry color_table[] = {
{ "AliceBlue" , { 0xF0, 0xF8, 0xFF } },
{ "AntiqueWhite" , { 0xFA, 0xEB, 0xD7 } },
{ "Aqua" , { 0x00, 0xFF, 0xFF } },
{ "Aquamarine" , { 0x7F, 0xFF, 0xD4 } },
{ "Azure" , { 0xF0, 0xFF, 0xFF } },
{ "Beige" , { 0xF5, 0xF5, 0xDC } },
{ "Bisque" , { 0xFF, 0xE4, 0xC4 } },
{ "Black" , { 0x00, 0x00, 0x00 } },
{ "BlanchedAlmond" , { 0xFF, 0xEB, 0xCD } },
{ "Blue" , { 0x00, 0x00, 0xFF } },
{ "BlueViolet" , { 0x8A, 0x2B, 0xE2 } },
{ "Brown" , { 0xA5, 0x2A, 0x2A } },
{ "BurlyWood" , { 0xDE, 0xB8, 0x87 } },
{ "CadetBlue" , { 0x5F, 0x9E, 0xA0 } },
{ "Chartreuse" , { 0x7F, 0xFF, 0x00 } },
{ "Chocolate" , { 0xD2, 0x69, 0x1E } },
{ "Coral" , { 0xFF, 0x7F, 0x50 } },
{ "CornflowerBlue" , { 0x64, 0x95, 0xED } },
{ "Cornsilk" , { 0xFF, 0xF8, 0xDC } },
{ "Crimson" , { 0xDC, 0x14, 0x3C } },
{ "Cyan" , { 0x00, 0xFF, 0xFF } },
{ "DarkBlue" , { 0x00, 0x00, 0x8B } },
{ "DarkCyan" , { 0x00, 0x8B, 0x8B } },
{ "DarkGoldenRod" , { 0xB8, 0x86, 0x0B } },
{ "DarkGray" , { 0xA9, 0xA9, 0xA9 } },
{ "DarkGreen" , { 0x00, 0x64, 0x00 } },
{ "DarkKhaki" , { 0xBD, 0xB7, 0x6B } },
{ "DarkMagenta" , { 0x8B, 0x00, 0x8B } },
{ "DarkOliveGreen" , { 0x55, 0x6B, 0x2F } },
{ "Darkorange" , { 0xFF, 0x8C, 0x00 } },
{ "DarkOrchid" , { 0x99, 0x32, 0xCC } },
{ "DarkRed" , { 0x8B, 0x00, 0x00 } },
{ "DarkSalmon" , { 0xE9, 0x96, 0x7A } },
{ "DarkSeaGreen" , { 0x8F, 0xBC, 0x8F } },
{ "DarkSlateBlue" , { 0x48, 0x3D, 0x8B } },
{ "DarkSlateGray" , { 0x2F, 0x4F, 0x4F } },
{ "DarkTurquoise" , { 0x00, 0xCE, 0xD1 } },
{ "DarkViolet" , { 0x94, 0x00, 0xD3 } },
{ "DeepPink" , { 0xFF, 0x14, 0x93 } },
{ "DeepSkyBlue" , { 0x00, 0xBF, 0xFF } },
{ "DimGray" , { 0x69, 0x69, 0x69 } },
{ "DodgerBlue" , { 0x1E, 0x90, 0xFF } },
{ "FireBrick" , { 0xB2, 0x22, 0x22 } },
{ "FloralWhite" , { 0xFF, 0xFA, 0xF0 } },
{ "ForestGreen" , { 0x22, 0x8B, 0x22 } },
{ "Fuchsia" , { 0xFF, 0x00, 0xFF } },
{ "Gainsboro" , { 0xDC, 0xDC, 0xDC } },
{ "GhostWhite" , { 0xF8, 0xF8, 0xFF } },
{ "Gold" , { 0xFF, 0xD7, 0x00 } },
{ "GoldenRod" , { 0xDA, 0xA5, 0x20 } },
{ "Gray" , { 0x80, 0x80, 0x80 } },
{ "Green" , { 0x00, 0x80, 0x00 } },
{ "GreenYellow" , { 0xAD, 0xFF, 0x2F } },
{ "HoneyDew" , { 0xF0, 0xFF, 0xF0 } },
{ "HotPink" , { 0xFF, 0x69, 0xB4 } },
{ "IndianRed" , { 0xCD, 0x5C, 0x5C } },
{ "Indigo" , { 0x4B, 0x00, 0x82 } },
{ "Ivory" , { 0xFF, 0xFF, 0xF0 } },
{ "Khaki" , { 0xF0, 0xE6, 0x8C } },
{ "Lavender" , { 0xE6, 0xE6, 0xFA } },
{ "LavenderBlush" , { 0xFF, 0xF0, 0xF5 } },
{ "LawnGreen" , { 0x7C, 0xFC, 0x00 } },
{ "LemonChiffon" , { 0xFF, 0xFA, 0xCD } },
{ "LightBlue" , { 0xAD, 0xD8, 0xE6 } },
{ "LightCoral" , { 0xF0, 0x80, 0x80 } },
{ "LightCyan" , { 0xE0, 0xFF, 0xFF } },
{ "LightGoldenRodYellow" , { 0xFA, 0xFA, 0xD2 } },
{ "LightGreen" , { 0x90, 0xEE, 0x90 } },
{ "LightGrey" , { 0xD3, 0xD3, 0xD3 } },
{ "LightPink" , { 0xFF, 0xB6, 0xC1 } },
{ "LightSalmon" , { 0xFF, 0xA0, 0x7A } },
{ "LightSeaGreen" , { 0x20, 0xB2, 0xAA } },
{ "LightSkyBlue" , { 0x87, 0xCE, 0xFA } },
{ "LightSlateGray" , { 0x77, 0x88, 0x99 } },
{ "LightSteelBlue" , { 0xB0, 0xC4, 0xDE } },
{ "LightYellow" , { 0xFF, 0xFF, 0xE0 } },
{ "Lime" , { 0x00, 0xFF, 0x00 } },
{ "LimeGreen" , { 0x32, 0xCD, 0x32 } },
{ "Linen" , { 0xFA, 0xF0, 0xE6 } },
{ "Magenta" , { 0xFF, 0x00, 0xFF } },
{ "Maroon" , { 0x80, 0x00, 0x00 } },
{ "MediumAquaMarine" , { 0x66, 0xCD, 0xAA } },
{ "MediumBlue" , { 0x00, 0x00, 0xCD } },
{ "MediumOrchid" , { 0xBA, 0x55, 0xD3 } },
{ "MediumPurple" , { 0x93, 0x70, 0xD8 } },
{ "MediumSeaGreen" , { 0x3C, 0xB3, 0x71 } },
{ "MediumSlateBlue" , { 0x7B, 0x68, 0xEE } },
{ "MediumSpringGreen" , { 0x00, 0xFA, 0x9A } },
{ "MediumTurquoise" , { 0x48, 0xD1, 0xCC } },
{ "MediumVioletRed" , { 0xC7, 0x15, 0x85 } },
{ "MidnightBlue" , { 0x19, 0x19, 0x70 } },
{ "MintCream" , { 0xF5, 0xFF, 0xFA } },
{ "MistyRose" , { 0xFF, 0xE4, 0xE1 } },
{ "Moccasin" , { 0xFF, 0xE4, 0xB5 } },
{ "NavajoWhite" , { 0xFF, 0xDE, 0xAD } },
{ "Navy" , { 0x00, 0x00, 0x80 } },
{ "OldLace" , { 0xFD, 0xF5, 0xE6 } },
{ "Olive" , { 0x80, 0x80, 0x00 } },
{ "OliveDrab" , { 0x6B, 0x8E, 0x23 } },
{ "Orange" , { 0xFF, 0xA5, 0x00 } },
{ "OrangeRed" , { 0xFF, 0x45, 0x00 } },
{ "Orchid" , { 0xDA, 0x70, 0xD6 } },
{ "PaleGoldenRod" , { 0xEE, 0xE8, 0xAA } },
{ "PaleGreen" , { 0x98, 0xFB, 0x98 } },
{ "PaleTurquoise" , { 0xAF, 0xEE, 0xEE } },
{ "PaleVioletRed" , { 0xD8, 0x70, 0x93 } },
{ "PapayaWhip" , { 0xFF, 0xEF, 0xD5 } },
{ "PeachPuff" , { 0xFF, 0xDA, 0xB9 } },
{ "Peru" , { 0xCD, 0x85, 0x3F } },
{ "Pink" , { 0xFF, 0xC0, 0xCB } },
{ "Plum" , { 0xDD, 0xA0, 0xDD } },
{ "PowderBlue" , { 0xB0, 0xE0, 0xE6 } },
{ "Purple" , { 0x80, 0x00, 0x80 } },
{ "Red" , { 0xFF, 0x00, 0x00 } },
{ "RosyBrown" , { 0xBC, 0x8F, 0x8F } },
{ "RoyalBlue" , { 0x41, 0x69, 0xE1 } },
{ "SaddleBrown" , { 0x8B, 0x45, 0x13 } },
{ "Salmon" , { 0xFA, 0x80, 0x72 } },
{ "SandyBrown" , { 0xF4, 0xA4, 0x60 } },
{ "SeaGreen" , { 0x2E, 0x8B, 0x57 } },
{ "SeaShell" , { 0xFF, 0xF5, 0xEE } },
{ "Sienna" , { 0xA0, 0x52, 0x2D } },
{ "Silver" , { 0xC0, 0xC0, 0xC0 } },
{ "SkyBlue" , { 0x87, 0xCE, 0xEB } },
{ "SlateBlue" , { 0x6A, 0x5A, 0xCD } },
{ "SlateGray" , { 0x70, 0x80, 0x90 } },
{ "Snow" , { 0xFF, 0xFA, 0xFA } },
{ "SpringGreen" , { 0x00, 0xFF, 0x7F } },
{ "SteelBlue" , { 0x46, 0x82, 0xB4 } },
{ "Tan" , { 0xD2, 0xB4, 0x8C } },
{ "Teal" , { 0x00, 0x80, 0x80 } },
{ "Thistle" , { 0xD8, 0xBF, 0xD8 } },
{ "Tomato" , { 0xFF, 0x63, 0x47 } },
{ "Turquoise" , { 0x40, 0xE0, 0xD0 } },
{ "Violet" , { 0xEE, 0x82, 0xEE } },
{ "Wheat" , { 0xF5, 0xDE, 0xB3 } },
{ "White" , { 0xFF, 0xFF, 0xFF } },
{ "WhiteSmoke" , { 0xF5, 0xF5, 0xF5 } },
{ "Yellow" , { 0xFF, 0xFF, 0x00 } },
{ "YellowGreen" , { 0x9A, 0xCD, 0x32 } },
};
static int color_table_compare(const void *lhs, const void *rhs)
{
return av_strcasecmp(lhs, ((const ColorEntry *)rhs)->name);
}
#define ALPHA_SEP '@'
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
void *log_ctx)
{
char *tail, color_string2[128];
const ColorEntry *entry;
int len, hex_offset = 0;
if (color_string[0] == '#' ) {
hex_offset = 1;
} else if (!strncmp(color_string, "0x" , 2))
hex_offset = 2;
if (slen < 0)
slen = strlen(color_string);
av_strlcpy(color_string2, color_string + hex_offset,
FFMIN(slen-hex_offset+1, sizeof (color_string2)));
if ((tail = strchr(color_string2, ALPHA_SEP)))
*tail++ = 0;
len = strlen(color_string2);
rgba_color[3] = 255;
if (!av_strcasecmp(color_string2, "random" ) || !av_strcasecmp(color_string2, "bikeshed" )) {
int rgba = 0xffffffff; /* av_get_random_seed(); */
rgba_color[0] = rgba >> 24;
rgba_color[1] = rgba >> 16;
rgba_color[2] = rgba >> 8;
rgba_color[3] = rgba;
} else if (hex_offset ||
strspn(color_string2, "0123456789ABCDEFabcdef" ) == len) {
char *tail;
unsigned int rgba = strtoul(color_string2, &tail, 16);
if (*tail || (len != 6 && len != 8)) {
av_log(log_ctx, AV_LOG_ERROR, "Invalid 0xRRGGBB[AA] color string: '%s'\n" , color_string2);
return AVERROR(EINVAL);
}
if (len == 8) {
rgba_color[3] = rgba;
rgba >>= 8;
}
rgba_color[0] = rgba >> 16;
rgba_color[1] = rgba >> 8;
rgba_color[2] = rgba;
} else {
entry = bsearch(color_string2,
color_table,
FF_ARRAY_ELEMS(color_table),
sizeof (ColorEntry),
color_table_compare);
if (!entry) {
av_log(log_ctx, AV_LOG_ERROR, "Cannot find color '%s'\n" , color_string2);
return AVERROR(EINVAL);
}
memcpy(rgba_color, entry->rgb_color, 3);
}
if (tail) {
double alpha;
const char *alpha_string = tail;
if (!strncmp(alpha_string, "0x" , 2)) {
alpha = strtoul(alpha_string, &tail, 16);
} else {
double norm_alpha = strtod(alpha_string, &tail);
if (norm_alpha < 0.0 || norm_alpha > 1.0)
alpha = 256;
else
alpha = 255 * norm_alpha;
}
if (tail == alpha_string || *tail || alpha > 255 || alpha < 0) {
av_log(log_ctx, AV_LOG_ERROR, "Invalid alpha value specifier '%s' in '%s'\n" ,
alpha_string, color_string);
return AVERROR(EINVAL);
}
rgba_color[3] = alpha;
}
return 0;
}
const char *av_get_known_color_name(int color_idx, const uint8_t **rgbp)
{
const ColorEntry *color;
if ((unsigned )color_idx >= FF_ARRAY_ELEMS(color_table))
return NULL;
color = &color_table[color_idx];
if (rgbp)
*rgbp = color->rgb_color;
return color->name;
}
/* get a positive number between n_min and n_max, for a maximum length
of len_max. Return -1 if error. */
static int date_get_num(const char **pp,
int n_min, int n_max, int len_max)
{
int i, val, c;
const char *p;
p = *pp;
val = 0;
for (i = 0; i < len_max; i++) {
c = *p;
if (!av_isdigit(c))
break ;
val = (val * 10) + c - '0' ;
p++;
}
/* no number read ? */
if (p == *pp)
return -1;
if (val < n_min || val > n_max)
return -1;
*pp = p;
return val;
}
static int date_get_month(const char **pp) {
int i = 0;
for (; i < 12; i++) {
if (!av_strncasecmp(*pp, months[i], 3)) {
const char *mo_full = months[i] + 3;
int len = strlen(mo_full);
*pp += 3;
if (len > 0 && !av_strncasecmp(*pp, mo_full, len))
*pp += len;
return i;
}
}
return -1;
}
char *av_small_strptime(const char *p, const char *fmt, struct tm *dt)
{
int c, val;
while ((c = *fmt++)) {
if (c != '%' ) {
if (av_isspace(c))
for (; *p && av_isspace(*p); p++);
else if (*p != c)
return NULL;
else p++;
continue ;
}
c = *fmt++;
switch (c) {
case 'H' :
case 'J' :
val = date_get_num(&p, 0, c == 'H' ? 23 : INT_MAX, c == 'H' ? 2 : 4);
if (val == -1)
return NULL;
dt->tm_hour = val;
break ;
case 'M' :
val = date_get_num(&p, 0, 59, 2);
if (val == -1)
return NULL;
dt->tm_min = val;
break ;
case 'S' :
val = date_get_num(&p, 0, 59, 2);
if (val == -1)
return NULL;
dt->tm_sec = val;
break ;
case 'Y' :
val = date_get_num(&p, 0, 9999, 4);
if (val == -1)
return NULL;
dt->tm_year = val - 1900;
break ;
case 'm' :
val = date_get_num(&p, 1, 12, 2);
if (val == -1)
return NULL;
dt->tm_mon = val - 1;
break ;
case 'd' :
val = date_get_num(&p, 1, 31, 2);
if (val == -1)
return NULL;
dt->tm_mday = val;
break ;
case 'T' :
p = av_small_strptime(p, "%H:%M:%S" , dt);
if (!p)
return NULL;
break ;
case 'b' :
case 'B' :
case 'h' :
val = date_get_month(&p);
if (val == -1)
return NULL;
dt->tm_mon = val;
break ;
case '%' :
if (*p++ != '%' )
return NULL;
break ;
default :
return NULL;
}
}
return (char *)p;
}
time_t av_timegm(struct tm *tm)
{
time_t t;
int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday;
if (m < 3) {
m += 12;
y--;
}
t = 86400LL *
(d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 + y / 400 - 719469);
t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec;
return t;
}
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
{
const char *p, *q;
int64_t t, now64;
time_t now;
struct tm dt = { 0 }, tmbuf;
int today = 0, negative = 0, microseconds = 0, suffix = 1000000;
int i;
static const char * const date_fmt[] = {
"%Y - %m - %d" ,
"%Y%m%d" ,
};
static const char * const time_fmt[] = {
"%H:%M:%S" ,
"%H%M%S" ,
};
static const char * const tz_fmt[] = {
"%H:%M" ,
"%H%M" ,
"%H" ,
};
p = timestr;
q = NULL;
*timeval = INT64_MIN;
if (!duration) {
now64 = av_gettime();
now = now64 / 1000000;
if (!av_strcasecmp(timestr, "now" )) {
*timeval = now64;
return 0;
}
/* parse the year-month-day part */
for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) {
q = av_small_strptime(p, date_fmt[i], &dt);
if (q)
break ;
}
/* if the year-month-day part is missing, then take the
* current year-month-day time */
if (!q) {
today = 1;
q = p;
}
p = q;
if (*p == 'T' || *p == 't' )
p++;
else
while (av_isspace(*p))
p++;
/* parse the hour-minute-second part */
for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) {
q = av_small_strptime(p, time_fmt[i], &dt);
if (q)
break ;
}
} else {
/* parse timestr as a duration */
if (p[0] == '-' ) {
negative = 1;
++p;
}
/* parse timestr as HH:MM:SS */
q = av_small_strptime(p, "%J:%M:%S" , &dt);
if (!q) {
/* parse timestr as MM:SS */
q = av_small_strptime(p, "%M:%S" , &dt);
dt.tm_hour = 0;
}
if (!q) {
char *o;
/* parse timestr as S+ */
errno = 0;
t = strtoll(p, &o, 10);
if (o == p) /* the parsing didn't succeed */
return AVERROR(EINVAL);
if (errno == ERANGE)
return AVERROR(ERANGE);
q = o;
} else {
t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
}
}
/* Now we have all the fields that we can get */
if (!q)
return AVERROR(EINVAL);
/* parse the .m... part */
if (*q == '.' ) {
int n;
q++;
for (n = 100000; n >= 1; n /= 10, q++) {
if (!av_isdigit(*q))
break ;
microseconds += n * (*q - '0' );
}
while (av_isdigit(*q))
q++;
}
if (duration) {
if (q[0] == 'm' && q[1] == 's' ) {
suffix = 1000;
microseconds /= 1000;
q += 2;
} else if (q[0] == 'u' && q[1] == 's' ) {
suffix = 1;
microseconds = 0;
q += 2;
} else if (*q == 's' )
q++;
} else {
int is_utc = *q == 'Z' || *q == 'z' ;
int tzoffset = 0;
q += is_utc;
if (!today && !is_utc && (*q == '+' || *q == '-' )) {
struct tm tz = { 0 };
int sign = (*q == '+' ? -1 : 1);
q++;
p = q;
for (i = 0; i < FF_ARRAY_ELEMS(tz_fmt); i++) {
q = av_small_strptime(p, tz_fmt[i], &tz);
if (q)
break ;
}
if (!q)
return AVERROR(EINVAL);
tzoffset = sign * (tz.tm_hour * 60 + tz.tm_min) * 60;
is_utc = 1;
}
if (today) { /* fill in today's date */
struct tm dt2 = is_utc ? *gmtime_r(&now, &tmbuf) : *localtime_r(&now, &tmbuf);
dt2.tm_hour = dt.tm_hour;
dt2.tm_min = dt.tm_min;
dt2.tm_sec = dt.tm_sec;
dt = dt2;
}
dt.tm_isdst = is_utc ? 0 : -1;
t = is_utc ? av_timegm(&dt) : mktime(&dt);
t += tzoffset;
}
/* Check that we are at the end of the string */
if (*q)
return AVERROR(EINVAL);
if (INT64_MAX / suffix < t || t < INT64_MIN / suffix)
return AVERROR(ERANGE);
t *= suffix;
if (INT64_MAX - microseconds < t)
return AVERROR(ERANGE);
t += microseconds;
if (t == INT64_MIN && negative)
return AVERROR(ERANGE);
*timeval = negative ? -t : t;
return 0;
}
int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
{
const char *p;
char tag[128], *q;
p = info;
if (*p == '?' )
p++;
for (;;) {
q = tag;
while (*p != '\0' && *p != '=' && *p != '&' ) {
if ((q - tag) < sizeof (tag) - 1)
*q++ = *p;
p++;
}
*q = '\0' ;
q = arg;
if (*p == '=' ) {
p++;
while (*p != '&' && *p != '\0' ) {
if ((q - arg) < arg_size - 1) {
if (*p == '+' )
*q++ = ' ' ;
else
*q++ = *p;
}
p++;
}
}
*q = '\0' ;
if (!strcmp(tag, tag1))
return 1;
if (*p != '&' )
break ;
p++;
}
return 0;
}
Messung V0.5 C=95 H=93 G=93
¤ Dauer der Verarbeitung: 0.51 Sekunden
¤
*© Formatika GbR, Deutschland