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Diffstat (limited to 'media/ffvpx/libavutil/parseutils.c')
-rw-r--r--media/ffvpx/libavutil/parseutils.c790
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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-20 09:16:47 +0000