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Diffstat (limited to 'media/ffvpx/libavutil/parseutils.c')
| -rw-r--r-- | media/ffvpx/libavutil/parseutils.c | 790 |
1 files changed, 790 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/parseutils.c b/media/ffvpx/libavutil/parseutils.c new file mode 100644 index 0000000000..c2916c458b --- /dev/null +++ b/media/ffvpx/libavutil/parseutils.c @@ -0,0 +1,790 @@ +/* + * 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 <= 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; +} |