/* * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * misc parsing utilities */ #include <sys/time.h> #include <time.h> #include "avstring.h" #include "avutil.h" #include "eval.h" #include "log.h" #include "random_seed.h" #include "parseutils.h" typedef struct { const char *abbr; int width, height; } VideoSizeAbbr; typedef struct { 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 }, { "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 }, }; 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 } }, }; int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str) { int i; int n = FF_ARRAY_ELEMS(video_size_abbrs); 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) { p = str; width = strtol(p, &p, 10); if (*p) p++; height = strtol(p, &p, 10); } 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); double res; /* 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_expr_parse_and_eval(&res, arg, NULL, NULL, NULL, NULL, NULL, NULL, NULL, 0, NULL)) < 0) return ret; *rate = av_d2q(res, 1001000); if (rate->num <= 0 || rate->den <= 0) return AVERROR(EINVAL); return 0; } typedef struct { const char *name; ///< a string representing the name of the color uint8_t rgb_color[3]; ///< RGB values for the color } ColorEntry; static 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 } }, { "LightGrey", { 0xD3, 0xD3, 0xD3 } }, { "LightGreen", { 0x90, 0xEE, 0x90 } }, { "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 = 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) { unsigned long int alpha; const char *alpha_string = tail; if (!strncmp(alpha_string, "0x", 2)) { alpha = strtoul(alpha_string, &tail, 16); } else { alpha = 255 * strtod(alpha_string, &tail); } if (tail == alpha_string || *tail || alpha > 255) { 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; } /* 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 (!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 const char *small_strptime(const char *p, const char *fmt, struct tm *dt) { int c, val; for(;;) { c = *fmt++; if (c == '\0') { return p; } else if (c == '%') { c = *fmt++; switch(c) { case 'H': val = date_get_num(&p, 0, 23, 2); 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 '%': goto match; default: return NULL; } } else { match: if (c != *p) return NULL; 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 = 86400 * (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; int64_t t; struct tm dt; 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", }; const char *q; int is_utc, len; char lastch; int negative = 0; #undef time time_t now = time(0); len = strlen(timestr); if (len > 0) lastch = timestr[len - 1]; else lastch = '\0'; is_utc = (lastch == 'z' || lastch == 'Z'); memset(&dt, 0, sizeof(dt)); p = timestr; q = NULL; if (!duration) { if (!av_strncasecmp(timestr, "now", len)) { *timeval = (int64_t) now * 1000000; return 0; } /* parse the year-month-day part */ for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) { q = 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) { if (is_utc) { dt = *gmtime(&now); } else { dt = *localtime(&now); } dt.tm_hour = dt.tm_min = dt.tm_sec = 0; } else { p = q; } if (*p == 'T' || *p == 't' || *p == ' ') p++; /* parse the hour-minute-second part */ for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) { q = 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 = small_strptime(p, time_fmt[0], &dt); if (!q) { /* parse timestr as S+ */ dt.tm_sec = strtol(p, (char **)&q, 10); if (q == p) { /* the parsing didn't succeed */ *timeval = INT64_MIN; return AVERROR(EINVAL); } dt.tm_min = 0; dt.tm_hour = 0; } } /* Now we have all the fields that we can get */ if (!q) { *timeval = INT64_MIN; return AVERROR(EINVAL); } if (duration) { t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec; } else { dt.tm_isdst = -1; /* unknown */ if (is_utc) { t = av_timegm(&dt); } else { t = mktime(&dt); } } t *= 1000000; /* parse the .m... part */ if (*q == '.') { int val, n; q++; for (val = 0, n = 100000; n >= 1; n /= 10, q++) { if (!isdigit(*q)) break; val += n * (*q - '0'); } t += val; } *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; } #ifdef TEST #undef printf int main(void) { printf("Testing av_parse_video_rate()\n"); { int i; const char *rates[] = { "-inf", "inf", "nan", "123/0", "-123 / 0", "", "/", " 123 / 321", "foo/foo", "foo/1", "1/foo", "0/0", "/0", "1/", "1", "0", "-123/123", "-foo", "123.23", ".23", "-.23", "-0.234", "-0.0000001", " 21332.2324 ", " -21332.2324 ", }; for (i = 0; i < FF_ARRAY_ELEMS(rates); i++) { int ret; AVRational q = (AVRational){0, 0}; ret = av_parse_video_rate(&q, rates[i]), printf("'%s' -> %d/%d ret:%d\n", rates[i], q.num, q.den, ret); } } printf("\nTesting av_parse_color()\n"); { int i; uint8_t rgba[4]; const char *color_names[] = { "bikeshed", "RaNdOm", "foo", "red", "Red ", "RED", "Violet", "Yellow", "Red", "0x000000", "0x0000000", "0xff000000", "0x3e34ff", "0x3e34ffaa", "0xffXXee", "0xfoobar", "0xffffeeeeeeee", "#ff0000", "#ffXX00", "ff0000", "ffXX00", "red@foo", "random@10", "0xff0000@1.0", "red@", "red@0xfff", "red@0xf", "red@2", "red@0.1", "red@-1", "red@0.5", "red@1.0", "red@256", "red@10foo", "red@-1.0", "red@-0.0", }; av_log_set_level(AV_LOG_DEBUG); for (i = 0; i < FF_ARRAY_ELEMS(color_names); i++) { if (av_parse_color(rgba, color_names[i], -1, NULL) >= 0) printf("%s -> R(%d) G(%d) B(%d) A(%d)\n", color_names[i], rgba[0], rgba[1], rgba[2], rgba[3]); } } return 0; } #endif /* TEST */