yading@11: /*
yading@11:  * This file is part of FFmpeg.
yading@11:  *
yading@11:  * FFmpeg is free software; you can redistribute it and/or
yading@11:  * modify it under the terms of the GNU Lesser General Public
yading@11:  * License as published by the Free Software Foundation; either
yading@11:  * version 2.1 of the License, or (at your option) any later version.
yading@11:  *
yading@11:  * FFmpeg is distributed in the hope that it will be useful,
yading@11:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@11:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@11:  * Lesser General Public License for more details.
yading@11:  *
yading@11:  * You should have received a copy of the GNU Lesser General Public
yading@11:  * License along with FFmpeg; if not, write to the Free Software
yading@11:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@11:  */
yading@11: 
yading@11: /**
yading@11:  * @file
yading@11:  * misc parsing utilities
yading@11:  */
yading@11: 
yading@11: #include <time.h>
yading@11: 
yading@11: #include "avstring.h"
yading@11: #include "avutil.h"
yading@11: #include "common.h"
yading@11: #include "eval.h"
yading@11: #include "log.h"
yading@11: #include "random_seed.h"
yading@11: #include "parseutils.h"
yading@11: 
yading@11: #ifdef TEST
yading@11: 
yading@11: #define av_get_random_seed av_get_random_seed_deterministic
yading@11: static uint32_t av_get_random_seed_deterministic(void);
yading@11: 
yading@11: #define time(t) 1331972053
yading@11: 
yading@11: #endif
yading@11: 
yading@11: int av_parse_ratio(AVRational *q, const char *str, int max,
yading@11:                    int log_offset, void *log_ctx)
yading@11: {
yading@11:     char c;
yading@11:     int ret;
yading@11: 
yading@11:     if (sscanf(str, "%d:%d%c", &q->num, &q->den, &c) != 2) {
yading@11:         double d;
yading@11:         ret = av_expr_parse_and_eval(&d, str, NULL, NULL,
yading@11:                                      NULL, NULL, NULL, NULL,
yading@11:                                      NULL, log_offset, log_ctx);
yading@11:         if (ret < 0)
yading@11:             return ret;
yading@11:         *q = av_d2q(d, max);
yading@11:     } else {
yading@11:         av_reduce(&q->num, &q->den, q->num, q->den, max);
yading@11:     }
yading@11: 
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: typedef struct {
yading@11:     const char *abbr;
yading@11:     int width, height;
yading@11: } VideoSizeAbbr;
yading@11: 
yading@11: typedef struct {
yading@11:     const char *abbr;
yading@11:     AVRational rate;
yading@11: } VideoRateAbbr;
yading@11: 
yading@11: static const VideoSizeAbbr video_size_abbrs[] = {
yading@11:     { "ntsc",      720, 480 },
yading@11:     { "pal",       720, 576 },
yading@11:     { "qntsc",     352, 240 }, /* VCD compliant NTSC */
yading@11:     { "qpal",      352, 288 }, /* VCD compliant PAL */
yading@11:     { "sntsc",     640, 480 }, /* square pixel NTSC */
yading@11:     { "spal",      768, 576 }, /* square pixel PAL */
yading@11:     { "film",      352, 240 },
yading@11:     { "ntsc-film", 352, 240 },
yading@11:     { "sqcif",     128,  96 },
yading@11:     { "qcif",      176, 144 },
yading@11:     { "cif",       352, 288 },
yading@11:     { "4cif",      704, 576 },
yading@11:     { "16cif",    1408,1152 },
yading@11:     { "qqvga",     160, 120 },
yading@11:     { "qvga",      320, 240 },
yading@11:     { "vga",       640, 480 },
yading@11:     { "svga",      800, 600 },
yading@11:     { "xga",      1024, 768 },
yading@11:     { "uxga",     1600,1200 },
yading@11:     { "qxga",     2048,1536 },
yading@11:     { "sxga",     1280,1024 },
yading@11:     { "qsxga",    2560,2048 },
yading@11:     { "hsxga",    5120,4096 },
yading@11:     { "wvga",      852, 480 },
yading@11:     { "wxga",     1366, 768 },
yading@11:     { "wsxga",    1600,1024 },
yading@11:     { "wuxga",    1920,1200 },
yading@11:     { "woxga",    2560,1600 },
yading@11:     { "wqsxga",   3200,2048 },
yading@11:     { "wquxga",   3840,2400 },
yading@11:     { "whsxga",   6400,4096 },
yading@11:     { "whuxga",   7680,4800 },
yading@11:     { "cga",       320, 200 },
yading@11:     { "ega",       640, 350 },
yading@11:     { "hd480",     852, 480 },
yading@11:     { "hd720",    1280, 720 },
yading@11:     { "hd1080",   1920,1080 },
yading@11:     { "2k",       2048,1080 }, /* Digital Cinema System Specification */
yading@11:     { "2kflat",   1998,1080 },
yading@11:     { "2kscope",  2048, 858 },
yading@11:     { "4k",       4096,2160 }, /* Digital Cinema System Specification */
yading@11:     { "4kflat",   3996,2160 },
yading@11:     { "4kscope",  4096,1716 },
yading@11: };
yading@11: 
yading@11: static const VideoRateAbbr video_rate_abbrs[]= {
yading@11:     { "ntsc",      { 30000, 1001 } },
yading@11:     { "pal",       {    25,    1 } },
yading@11:     { "qntsc",     { 30000, 1001 } }, /* VCD compliant NTSC */
yading@11:     { "qpal",      {    25,    1 } }, /* VCD compliant PAL */
yading@11:     { "sntsc",     { 30000, 1001 } }, /* square pixel NTSC */
yading@11:     { "spal",      {    25,    1 } }, /* square pixel PAL */
yading@11:     { "film",      {    24,    1 } },
yading@11:     { "ntsc-film", { 24000, 1001 } },
yading@11: };
yading@11: 
yading@11: int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
yading@11: {
yading@11:     int i;
yading@11:     int n = FF_ARRAY_ELEMS(video_size_abbrs);
yading@11:     const char *p;
yading@11:     int width = 0, height = 0;
yading@11: 
yading@11:     for (i = 0; i < n; i++) {
yading@11:         if (!strcmp(video_size_abbrs[i].abbr, str)) {
yading@11:             width  = video_size_abbrs[i].width;
yading@11:             height = video_size_abbrs[i].height;
yading@11:             break;
yading@11:         }
yading@11:     }
yading@11:     if (i == n) {
yading@11:         width = strtol(str, (void*)&p, 10);
yading@11:         if (*p)
yading@11:             p++;
yading@11:         height = strtol(p, (void*)&p, 10);
yading@11: 
yading@11:         /* trailing extraneous data detected, like in 123x345foobar */
yading@11:         if (*p)
yading@11:             return AVERROR(EINVAL);
yading@11:     }
yading@11:     if (width <= 0 || height <= 0)
yading@11:         return AVERROR(EINVAL);
yading@11:     *width_ptr  = width;
yading@11:     *height_ptr = height;
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: int av_parse_video_rate(AVRational *rate, const char *arg)
yading@11: {
yading@11:     int i, ret;
yading@11:     int n = FF_ARRAY_ELEMS(video_rate_abbrs);
yading@11: 
yading@11:     /* First, we check our abbreviation table */
yading@11:     for (i = 0; i < n; ++i)
yading@11:         if (!strcmp(video_rate_abbrs[i].abbr, arg)) {
yading@11:             *rate = video_rate_abbrs[i].rate;
yading@11:             return 0;
yading@11:         }
yading@11: 
yading@11:     /* Then, we try to parse it as fraction */
yading@11:     if ((ret = av_parse_ratio_quiet(rate, arg, 1001000)) < 0)
yading@11:         return ret;
yading@11:     if (rate->num <= 0 || rate->den <= 0)
yading@11:         return AVERROR(EINVAL);
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: typedef struct {
yading@11:     const char *name;            ///< a string representing the name of the color
yading@11:     uint8_t     rgb_color[3];    ///< RGB values for the color
yading@11: } ColorEntry;
yading@11: 
yading@11: static const ColorEntry color_table[] = {
yading@11:     { "AliceBlue",            { 0xF0, 0xF8, 0xFF } },
yading@11:     { "AntiqueWhite",         { 0xFA, 0xEB, 0xD7 } },
yading@11:     { "Aqua",                 { 0x00, 0xFF, 0xFF } },
yading@11:     { "Aquamarine",           { 0x7F, 0xFF, 0xD4 } },
yading@11:     { "Azure",                { 0xF0, 0xFF, 0xFF } },
yading@11:     { "Beige",                { 0xF5, 0xF5, 0xDC } },
yading@11:     { "Bisque",               { 0xFF, 0xE4, 0xC4 } },
yading@11:     { "Black",                { 0x00, 0x00, 0x00 } },
yading@11:     { "BlanchedAlmond",       { 0xFF, 0xEB, 0xCD } },
yading@11:     { "Blue",                 { 0x00, 0x00, 0xFF } },
yading@11:     { "BlueViolet",           { 0x8A, 0x2B, 0xE2 } },
yading@11:     { "Brown",                { 0xA5, 0x2A, 0x2A } },
yading@11:     { "BurlyWood",            { 0xDE, 0xB8, 0x87 } },
yading@11:     { "CadetBlue",            { 0x5F, 0x9E, 0xA0 } },
yading@11:     { "Chartreuse",           { 0x7F, 0xFF, 0x00 } },
yading@11:     { "Chocolate",            { 0xD2, 0x69, 0x1E } },
yading@11:     { "Coral",                { 0xFF, 0x7F, 0x50 } },
yading@11:     { "CornflowerBlue",       { 0x64, 0x95, 0xED } },
yading@11:     { "Cornsilk",             { 0xFF, 0xF8, 0xDC } },
yading@11:     { "Crimson",              { 0xDC, 0x14, 0x3C } },
yading@11:     { "Cyan",                 { 0x00, 0xFF, 0xFF } },
yading@11:     { "DarkBlue",             { 0x00, 0x00, 0x8B } },
yading@11:     { "DarkCyan",             { 0x00, 0x8B, 0x8B } },
yading@11:     { "DarkGoldenRod",        { 0xB8, 0x86, 0x0B } },
yading@11:     { "DarkGray",             { 0xA9, 0xA9, 0xA9 } },
yading@11:     { "DarkGreen",            { 0x00, 0x64, 0x00 } },
yading@11:     { "DarkKhaki",            { 0xBD, 0xB7, 0x6B } },
yading@11:     { "DarkMagenta",          { 0x8B, 0x00, 0x8B } },
yading@11:     { "DarkOliveGreen",       { 0x55, 0x6B, 0x2F } },
yading@11:     { "Darkorange",           { 0xFF, 0x8C, 0x00 } },
yading@11:     { "DarkOrchid",           { 0x99, 0x32, 0xCC } },
yading@11:     { "DarkRed",              { 0x8B, 0x00, 0x00 } },
yading@11:     { "DarkSalmon",           { 0xE9, 0x96, 0x7A } },
yading@11:     { "DarkSeaGreen",         { 0x8F, 0xBC, 0x8F } },
yading@11:     { "DarkSlateBlue",        { 0x48, 0x3D, 0x8B } },
yading@11:     { "DarkSlateGray",        { 0x2F, 0x4F, 0x4F } },
yading@11:     { "DarkTurquoise",        { 0x00, 0xCE, 0xD1 } },
yading@11:     { "DarkViolet",           { 0x94, 0x00, 0xD3 } },
yading@11:     { "DeepPink",             { 0xFF, 0x14, 0x93 } },
yading@11:     { "DeepSkyBlue",          { 0x00, 0xBF, 0xFF } },
yading@11:     { "DimGray",              { 0x69, 0x69, 0x69 } },
yading@11:     { "DodgerBlue",           { 0x1E, 0x90, 0xFF } },
yading@11:     { "FireBrick",            { 0xB2, 0x22, 0x22 } },
yading@11:     { "FloralWhite",          { 0xFF, 0xFA, 0xF0 } },
yading@11:     { "ForestGreen",          { 0x22, 0x8B, 0x22 } },
yading@11:     { "Fuchsia",              { 0xFF, 0x00, 0xFF } },
yading@11:     { "Gainsboro",            { 0xDC, 0xDC, 0xDC } },
yading@11:     { "GhostWhite",           { 0xF8, 0xF8, 0xFF } },
yading@11:     { "Gold",                 { 0xFF, 0xD7, 0x00 } },
yading@11:     { "GoldenRod",            { 0xDA, 0xA5, 0x20 } },
yading@11:     { "Gray",                 { 0x80, 0x80, 0x80 } },
yading@11:     { "Green",                { 0x00, 0x80, 0x00 } },
yading@11:     { "GreenYellow",          { 0xAD, 0xFF, 0x2F } },
yading@11:     { "HoneyDew",             { 0xF0, 0xFF, 0xF0 } },
yading@11:     { "HotPink",              { 0xFF, 0x69, 0xB4 } },
yading@11:     { "IndianRed",            { 0xCD, 0x5C, 0x5C } },
yading@11:     { "Indigo",               { 0x4B, 0x00, 0x82 } },
yading@11:     { "Ivory",                { 0xFF, 0xFF, 0xF0 } },
yading@11:     { "Khaki",                { 0xF0, 0xE6, 0x8C } },
yading@11:     { "Lavender",             { 0xE6, 0xE6, 0xFA } },
yading@11:     { "LavenderBlush",        { 0xFF, 0xF0, 0xF5 } },
yading@11:     { "LawnGreen",            { 0x7C, 0xFC, 0x00 } },
yading@11:     { "LemonChiffon",         { 0xFF, 0xFA, 0xCD } },
yading@11:     { "LightBlue",            { 0xAD, 0xD8, 0xE6 } },
yading@11:     { "LightCoral",           { 0xF0, 0x80, 0x80 } },
yading@11:     { "LightCyan",            { 0xE0, 0xFF, 0xFF } },
yading@11:     { "LightGoldenRodYellow", { 0xFA, 0xFA, 0xD2 } },
yading@11:     { "LightGreen",           { 0x90, 0xEE, 0x90 } },
yading@11:     { "LightGrey",            { 0xD3, 0xD3, 0xD3 } },
yading@11:     { "LightPink",            { 0xFF, 0xB6, 0xC1 } },
yading@11:     { "LightSalmon",          { 0xFF, 0xA0, 0x7A } },
yading@11:     { "LightSeaGreen",        { 0x20, 0xB2, 0xAA } },
yading@11:     { "LightSkyBlue",         { 0x87, 0xCE, 0xFA } },
yading@11:     { "LightSlateGray",       { 0x77, 0x88, 0x99 } },
yading@11:     { "LightSteelBlue",       { 0xB0, 0xC4, 0xDE } },
yading@11:     { "LightYellow",          { 0xFF, 0xFF, 0xE0 } },
yading@11:     { "Lime",                 { 0x00, 0xFF, 0x00 } },
yading@11:     { "LimeGreen",            { 0x32, 0xCD, 0x32 } },
yading@11:     { "Linen",                { 0xFA, 0xF0, 0xE6 } },
yading@11:     { "Magenta",              { 0xFF, 0x00, 0xFF } },
yading@11:     { "Maroon",               { 0x80, 0x00, 0x00 } },
yading@11:     { "MediumAquaMarine",     { 0x66, 0xCD, 0xAA } },
yading@11:     { "MediumBlue",           { 0x00, 0x00, 0xCD } },
yading@11:     { "MediumOrchid",         { 0xBA, 0x55, 0xD3 } },
yading@11:     { "MediumPurple",         { 0x93, 0x70, 0xD8 } },
yading@11:     { "MediumSeaGreen",       { 0x3C, 0xB3, 0x71 } },
yading@11:     { "MediumSlateBlue",      { 0x7B, 0x68, 0xEE } },
yading@11:     { "MediumSpringGreen",    { 0x00, 0xFA, 0x9A } },
yading@11:     { "MediumTurquoise",      { 0x48, 0xD1, 0xCC } },
yading@11:     { "MediumVioletRed",      { 0xC7, 0x15, 0x85 } },
yading@11:     { "MidnightBlue",         { 0x19, 0x19, 0x70 } },
yading@11:     { "MintCream",            { 0xF5, 0xFF, 0xFA } },
yading@11:     { "MistyRose",            { 0xFF, 0xE4, 0xE1 } },
yading@11:     { "Moccasin",             { 0xFF, 0xE4, 0xB5 } },
yading@11:     { "NavajoWhite",          { 0xFF, 0xDE, 0xAD } },
yading@11:     { "Navy",                 { 0x00, 0x00, 0x80 } },
yading@11:     { "OldLace",              { 0xFD, 0xF5, 0xE6 } },
yading@11:     { "Olive",                { 0x80, 0x80, 0x00 } },
yading@11:     { "OliveDrab",            { 0x6B, 0x8E, 0x23 } },
yading@11:     { "Orange",               { 0xFF, 0xA5, 0x00 } },
yading@11:     { "OrangeRed",            { 0xFF, 0x45, 0x00 } },
yading@11:     { "Orchid",               { 0xDA, 0x70, 0xD6 } },
yading@11:     { "PaleGoldenRod",        { 0xEE, 0xE8, 0xAA } },
yading@11:     { "PaleGreen",            { 0x98, 0xFB, 0x98 } },
yading@11:     { "PaleTurquoise",        { 0xAF, 0xEE, 0xEE } },
yading@11:     { "PaleVioletRed",        { 0xD8, 0x70, 0x93 } },
yading@11:     { "PapayaWhip",           { 0xFF, 0xEF, 0xD5 } },
yading@11:     { "PeachPuff",            { 0xFF, 0xDA, 0xB9 } },
yading@11:     { "Peru",                 { 0xCD, 0x85, 0x3F } },
yading@11:     { "Pink",                 { 0xFF, 0xC0, 0xCB } },
yading@11:     { "Plum",                 { 0xDD, 0xA0, 0xDD } },
yading@11:     { "PowderBlue",           { 0xB0, 0xE0, 0xE6 } },
yading@11:     { "Purple",               { 0x80, 0x00, 0x80 } },
yading@11:     { "Red",                  { 0xFF, 0x00, 0x00 } },
yading@11:     { "RosyBrown",            { 0xBC, 0x8F, 0x8F } },
yading@11:     { "RoyalBlue",            { 0x41, 0x69, 0xE1 } },
yading@11:     { "SaddleBrown",          { 0x8B, 0x45, 0x13 } },
yading@11:     { "Salmon",               { 0xFA, 0x80, 0x72 } },
yading@11:     { "SandyBrown",           { 0xF4, 0xA4, 0x60 } },
yading@11:     { "SeaGreen",             { 0x2E, 0x8B, 0x57 } },
yading@11:     { "SeaShell",             { 0xFF, 0xF5, 0xEE } },
yading@11:     { "Sienna",               { 0xA0, 0x52, 0x2D } },
yading@11:     { "Silver",               { 0xC0, 0xC0, 0xC0 } },
yading@11:     { "SkyBlue",              { 0x87, 0xCE, 0xEB } },
yading@11:     { "SlateBlue",            { 0x6A, 0x5A, 0xCD } },
yading@11:     { "SlateGray",            { 0x70, 0x80, 0x90 } },
yading@11:     { "Snow",                 { 0xFF, 0xFA, 0xFA } },
yading@11:     { "SpringGreen",          { 0x00, 0xFF, 0x7F } },
yading@11:     { "SteelBlue",            { 0x46, 0x82, 0xB4 } },
yading@11:     { "Tan",                  { 0xD2, 0xB4, 0x8C } },
yading@11:     { "Teal",                 { 0x00, 0x80, 0x80 } },
yading@11:     { "Thistle",              { 0xD8, 0xBF, 0xD8 } },
yading@11:     { "Tomato",               { 0xFF, 0x63, 0x47 } },
yading@11:     { "Turquoise",            { 0x40, 0xE0, 0xD0 } },
yading@11:     { "Violet",               { 0xEE, 0x82, 0xEE } },
yading@11:     { "Wheat",                { 0xF5, 0xDE, 0xB3 } },
yading@11:     { "White",                { 0xFF, 0xFF, 0xFF } },
yading@11:     { "WhiteSmoke",           { 0xF5, 0xF5, 0xF5 } },
yading@11:     { "Yellow",               { 0xFF, 0xFF, 0x00 } },
yading@11:     { "YellowGreen",          { 0x9A, 0xCD, 0x32 } },
yading@11: };
yading@11: 
yading@11: static int color_table_compare(const void *lhs, const void *rhs)
yading@11: {
yading@11:     return av_strcasecmp(lhs, ((const ColorEntry *)rhs)->name);
yading@11: }
yading@11: 
yading@11: #define ALPHA_SEP '@'
yading@11: 
yading@11: int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
yading@11:                    void *log_ctx)
yading@11: {
yading@11:     char *tail, color_string2[128];
yading@11:     const ColorEntry *entry;
yading@11:     int len, hex_offset = 0;
yading@11: 
yading@11:     if (color_string[0] == '#') {
yading@11:         hex_offset = 1;
yading@11:     } else if (!strncmp(color_string, "0x", 2))
yading@11:         hex_offset = 2;
yading@11: 
yading@11:     if (slen < 0)
yading@11:         slen = strlen(color_string);
yading@11:     av_strlcpy(color_string2, color_string + hex_offset,
yading@11:                FFMIN(slen-hex_offset+1, sizeof(color_string2)));
yading@11:     if ((tail = strchr(color_string2, ALPHA_SEP)))
yading@11:         *tail++ = 0;
yading@11:     len = strlen(color_string2);
yading@11:     rgba_color[3] = 255;
yading@11: 
yading@11:     if (!av_strcasecmp(color_string2, "random") || !av_strcasecmp(color_string2, "bikeshed")) {
yading@11:         int rgba = av_get_random_seed();
yading@11:         rgba_color[0] = rgba >> 24;
yading@11:         rgba_color[1] = rgba >> 16;
yading@11:         rgba_color[2] = rgba >> 8;
yading@11:         rgba_color[3] = rgba;
yading@11:     } else if (hex_offset ||
yading@11:                strspn(color_string2, "0123456789ABCDEFabcdef") == len) {
yading@11:         char *tail;
yading@11:         unsigned int rgba = strtoul(color_string2, &tail, 16);
yading@11: 
yading@11:         if (*tail || (len != 6 && len != 8)) {
yading@11:             av_log(log_ctx, AV_LOG_ERROR, "Invalid 0xRRGGBB[AA] color string: '%s'\n", color_string2);
yading@11:             return AVERROR(EINVAL);
yading@11:         }
yading@11:         if (len == 8) {
yading@11:             rgba_color[3] = rgba;
yading@11:             rgba >>= 8;
yading@11:         }
yading@11:         rgba_color[0] = rgba >> 16;
yading@11:         rgba_color[1] = rgba >> 8;
yading@11:         rgba_color[2] = rgba;
yading@11:     } else {
yading@11:         entry = bsearch(color_string2,
yading@11:                         color_table,
yading@11:                         FF_ARRAY_ELEMS(color_table),
yading@11:                         sizeof(ColorEntry),
yading@11:                         color_table_compare);
yading@11:         if (!entry) {
yading@11:             av_log(log_ctx, AV_LOG_ERROR, "Cannot find color '%s'\n", color_string2);
yading@11:             return AVERROR(EINVAL);
yading@11:         }
yading@11:         memcpy(rgba_color, entry->rgb_color, 3);
yading@11:     }
yading@11: 
yading@11:     if (tail) {
yading@11:         double alpha;
yading@11:         const char *alpha_string = tail;
yading@11:         if (!strncmp(alpha_string, "0x", 2)) {
yading@11:             alpha = strtoul(alpha_string, &tail, 16);
yading@11:         } else {
yading@11:             double norm_alpha = strtod(alpha_string, &tail);
yading@11:             if (norm_alpha < 0.0 || norm_alpha > 1.0)
yading@11:                 alpha = 256;
yading@11:             else
yading@11:                 alpha = 255 * norm_alpha;
yading@11:         }
yading@11: 
yading@11:         if (tail == alpha_string || *tail || alpha > 255 || alpha < 0) {
yading@11:             av_log(log_ctx, AV_LOG_ERROR, "Invalid alpha value specifier '%s' in '%s'\n",
yading@11:                    alpha_string, color_string);
yading@11:             return AVERROR(EINVAL);
yading@11:         }
yading@11:         rgba_color[3] = alpha;
yading@11:     }
yading@11: 
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: /* get a positive number between n_min and n_max, for a maximum length
yading@11:    of len_max. Return -1 if error. */
yading@11: static int date_get_num(const char **pp,
yading@11:                         int n_min, int n_max, int len_max)
yading@11: {
yading@11:     int i, val, c;
yading@11:     const char *p;
yading@11: 
yading@11:     p = *pp;
yading@11:     val = 0;
yading@11:     for(i = 0; i < len_max; i++) {
yading@11:         c = *p;
yading@11:         if (!av_isdigit(c))
yading@11:             break;
yading@11:         val = (val * 10) + c - '0';
yading@11:         p++;
yading@11:     }
yading@11:     /* no number read ? */
yading@11:     if (p == *pp)
yading@11:         return -1;
yading@11:     if (val < n_min || val > n_max)
yading@11:         return -1;
yading@11:     *pp = p;
yading@11:     return val;
yading@11: }
yading@11: 
yading@11: char *av_small_strptime(const char *p, const char *fmt, struct tm *dt)
yading@11: {
yading@11:     int c, val;
yading@11: 
yading@11:     for(;;) {
yading@11:         /* consume time string until a non whitespace char is found */
yading@11:         while (av_isspace(*fmt)) {
yading@11:             while (av_isspace(*p))
yading@11:                 p++;
yading@11:             fmt++;
yading@11:         }
yading@11:         c = *fmt++;
yading@11:         if (c == '\0') {
yading@11:             return (char *)p;
yading@11:         } else if (c == '%') {
yading@11:             c = *fmt++;
yading@11:             switch(c) {
yading@11:             case 'H':
yading@11:             case 'J':
yading@11:                 val = date_get_num(&p, 0, c == 'H' ? 23 : INT_MAX, 2);
yading@11:                 if (val == -1)
yading@11:                     return NULL;
yading@11:                 dt->tm_hour = val;
yading@11:                 break;
yading@11:             case 'M':
yading@11:                 val = date_get_num(&p, 0, 59, 2);
yading@11:                 if (val == -1)
yading@11:                     return NULL;
yading@11:                 dt->tm_min = val;
yading@11:                 break;
yading@11:             case 'S':
yading@11:                 val = date_get_num(&p, 0, 59, 2);
yading@11:                 if (val == -1)
yading@11:                     return NULL;
yading@11:                 dt->tm_sec = val;
yading@11:                 break;
yading@11:             case 'Y':
yading@11:                 val = date_get_num(&p, 0, 9999, 4);
yading@11:                 if (val == -1)
yading@11:                     return NULL;
yading@11:                 dt->tm_year = val - 1900;
yading@11:                 break;
yading@11:             case 'm':
yading@11:                 val = date_get_num(&p, 1, 12, 2);
yading@11:                 if (val == -1)
yading@11:                     return NULL;
yading@11:                 dt->tm_mon = val - 1;
yading@11:                 break;
yading@11:             case 'd':
yading@11:                 val = date_get_num(&p, 1, 31, 2);
yading@11:                 if (val == -1)
yading@11:                     return NULL;
yading@11:                 dt->tm_mday = val;
yading@11:                 break;
yading@11:             case '%':
yading@11:                 goto match;
yading@11:             default:
yading@11:                 return NULL;
yading@11:             }
yading@11:         } else {
yading@11:         match:
yading@11:             if (c != *p)
yading@11:                 return NULL;
yading@11:             p++;
yading@11:         }
yading@11:     }
yading@11: }
yading@11: 
yading@11: time_t av_timegm(struct tm *tm)
yading@11: {
yading@11:     time_t t;
yading@11: 
yading@11:     int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday;
yading@11: 
yading@11:     if (m < 3) {
yading@11:         m += 12;
yading@11:         y--;
yading@11:     }
yading@11: 
yading@11:     t = 86400LL *
yading@11:         (d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 + y / 400 - 719469);
yading@11: 
yading@11:     t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec;
yading@11: 
yading@11:     return t;
yading@11: }
yading@11: 
yading@11: int av_parse_time(int64_t *timeval, const char *timestr, int duration)
yading@11: {
yading@11:     const char *p, *q;
yading@11:     int64_t t;
yading@11:     time_t now;
yading@11:     struct tm dt = { 0 };
yading@11:     int today = 0, negative = 0, microseconds = 0;
yading@11:     int i;
yading@11:     static const char * const date_fmt[] = {
yading@11:         "%Y-%m-%d",
yading@11:         "%Y%m%d",
yading@11:     };
yading@11:     static const char * const time_fmt[] = {
yading@11:         "%H:%M:%S",
yading@11:         "%H%M%S",
yading@11:     };
yading@11: 
yading@11:     p = timestr;
yading@11:     q = NULL;
yading@11:     *timeval = INT64_MIN;
yading@11:     if (!duration) {
yading@11:         now = time(0);
yading@11: 
yading@11:         if (!av_strcasecmp(timestr, "now")) {
yading@11:             *timeval = (int64_t) now * 1000000;
yading@11:             return 0;
yading@11:         }
yading@11: 
yading@11:         /* parse the year-month-day part */
yading@11:         for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) {
yading@11:             q = av_small_strptime(p, date_fmt[i], &dt);
yading@11:             if (q)
yading@11:                 break;
yading@11:         }
yading@11: 
yading@11:         /* if the year-month-day part is missing, then take the
yading@11:          * current year-month-day time */
yading@11:         if (!q) {
yading@11:             today = 1;
yading@11:             q = p;
yading@11:         }
yading@11:         p = q;
yading@11: 
yading@11:         if (*p == 'T' || *p == 't' || *p == ' ')
yading@11:             p++;
yading@11: 
yading@11:         /* parse the hour-minute-second part */
yading@11:         for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) {
yading@11:             q = av_small_strptime(p, time_fmt[i], &dt);
yading@11:             if (q)
yading@11:                 break;
yading@11:         }
yading@11:     } else {
yading@11:         /* parse timestr as a duration */
yading@11:         if (p[0] == '-') {
yading@11:             negative = 1;
yading@11:             ++p;
yading@11:         }
yading@11:         /* parse timestr as HH:MM:SS */
yading@11:         q = av_small_strptime(p, "%J:%M:%S", &dt);
yading@11:         if (!q) {
yading@11:             /* parse timestr as MM:SS */
yading@11:             q = av_small_strptime(p, "%M:%S", &dt);
yading@11:             dt.tm_hour = 0;
yading@11:         }
yading@11:         if (!q) {
yading@11:             /* parse timestr as S+ */
yading@11:             dt.tm_sec = strtol(p, (void *)&q, 10);
yading@11:             if (q == p) /* the parsing didn't succeed */
yading@11:                 return AVERROR(EINVAL);
yading@11:             dt.tm_min = 0;
yading@11:             dt.tm_hour = 0;
yading@11:         }
yading@11:     }
yading@11: 
yading@11:     /* Now we have all the fields that we can get */
yading@11:     if (!q)
yading@11:         return AVERROR(EINVAL);
yading@11: 
yading@11:     /* parse the .m... part */
yading@11:     if (*q == '.') {
yading@11:         int n;
yading@11:         q++;
yading@11:         for (n = 100000; n >= 1; n /= 10, q++) {
yading@11:             if (!av_isdigit(*q))
yading@11:                 break;
yading@11:             microseconds += n * (*q - '0');
yading@11:         }
yading@11:         while (av_isdigit(*q))
yading@11:             q++;
yading@11:     }
yading@11: 
yading@11:     if (duration) {
yading@11:         t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
yading@11:     } else {
yading@11:         int is_utc = *q == 'Z' || *q == 'z';
yading@11:         q += is_utc;
yading@11:         if (today) { /* fill in today's date */
yading@11:             struct tm dt2 = is_utc ? *gmtime(&now) : *localtime(&now);
yading@11:             dt2.tm_hour = dt.tm_hour;
yading@11:             dt2.tm_min  = dt.tm_min;
yading@11:             dt2.tm_sec  = dt.tm_sec;
yading@11:             dt = dt2;
yading@11:         }
yading@11:         t = is_utc ? av_timegm(&dt) : mktime(&dt);
yading@11:     }
yading@11: 
yading@11:     /* Check that we are at the end of the string */
yading@11:     if (*q)
yading@11:         return AVERROR(EINVAL);
yading@11: 
yading@11:     t *= 1000000;
yading@11:     t += microseconds;
yading@11:     *timeval = negative ? -t : t;
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
yading@11: {
yading@11:     const char *p;
yading@11:     char tag[128], *q;
yading@11: 
yading@11:     p = info;
yading@11:     if (*p == '?')
yading@11:         p++;
yading@11:     for(;;) {
yading@11:         q = tag;
yading@11:         while (*p != '\0' && *p != '=' && *p != '&') {
yading@11:             if ((q - tag) < sizeof(tag) - 1)
yading@11:                 *q++ = *p;
yading@11:             p++;
yading@11:         }
yading@11:         *q = '\0';
yading@11:         q = arg;
yading@11:         if (*p == '=') {
yading@11:             p++;
yading@11:             while (*p != '&' && *p != '\0') {
yading@11:                 if ((q - arg) < arg_size - 1) {
yading@11:                     if (*p == '+')
yading@11:                         *q++ = ' ';
yading@11:                     else
yading@11:                         *q++ = *p;
yading@11:                 }
yading@11:                 p++;
yading@11:             }
yading@11:         }
yading@11:         *q = '\0';
yading@11:         if (!strcmp(tag, tag1))
yading@11:             return 1;
yading@11:         if (*p != '&')
yading@11:             break;
yading@11:         p++;
yading@11:     }
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: #ifdef TEST
yading@11: 
yading@11: static uint32_t randomv = MKTAG('L','A','V','U');
yading@11: 
yading@11: static uint32_t av_get_random_seed_deterministic(void)
yading@11: {
yading@11:     return randomv = randomv * 1664525 + 1013904223;
yading@11: }
yading@11: 
yading@11: int main(void)
yading@11: {
yading@11:     printf("Testing av_parse_video_rate()\n");
yading@11:     {
yading@11:         int i;
yading@11:         static const char *const rates[] = {
yading@11:             "-inf",
yading@11:             "inf",
yading@11:             "nan",
yading@11:             "123/0",
yading@11:             "-123 / 0",
yading@11:             "",
yading@11:             "/",
yading@11:             " 123  /  321",
yading@11:             "foo/foo",
yading@11:             "foo/1",
yading@11:             "1/foo",
yading@11:             "0/0",
yading@11:             "/0",
yading@11:             "1/",
yading@11:             "1",
yading@11:             "0",
yading@11:             "-123/123",
yading@11:             "-foo",
yading@11:             "123.23",
yading@11:             ".23",
yading@11:             "-.23",
yading@11:             "-0.234",
yading@11:             "-0.0000001",
yading@11:             "  21332.2324   ",
yading@11:             " -21332.2324   ",
yading@11:         };
yading@11: 
yading@11:         for (i = 0; i < FF_ARRAY_ELEMS(rates); i++) {
yading@11:             int ret;
yading@11:             AVRational q = { 0, 0 };
yading@11:             ret = av_parse_video_rate(&q, rates[i]);
yading@11:             printf("'%s' -> %d/%d %s\n",
yading@11:                    rates[i], q.num, q.den, ret ? "ERROR" : "OK");
yading@11:         }
yading@11:     }
yading@11: 
yading@11:     printf("\nTesting av_parse_color()\n");
yading@11:     {
yading@11:         int i;
yading@11:         uint8_t rgba[4];
yading@11:         static const char *const color_names[] = {
yading@11:             "bikeshed",
yading@11:             "RaNdOm",
yading@11:             "foo",
yading@11:             "red",
yading@11:             "Red ",
yading@11:             "RED",
yading@11:             "Violet",
yading@11:             "Yellow",
yading@11:             "Red",
yading@11:             "0x000000",
yading@11:             "0x0000000",
yading@11:             "0xff000000",
yading@11:             "0x3e34ff",
yading@11:             "0x3e34ffaa",
yading@11:             "0xffXXee",
yading@11:             "0xfoobar",
yading@11:             "0xffffeeeeeeee",
yading@11:             "#ff0000",
yading@11:             "#ffXX00",
yading@11:             "ff0000",
yading@11:             "ffXX00",
yading@11:             "red@foo",
yading@11:             "random@10",
yading@11:             "0xff0000@1.0",
yading@11:             "red@",
yading@11:             "red@0xfff",
yading@11:             "red@0xf",
yading@11:             "red@2",
yading@11:             "red@0.1",
yading@11:             "red@-1",
yading@11:             "red@0.5",
yading@11:             "red@1.0",
yading@11:             "red@256",
yading@11:             "red@10foo",
yading@11:             "red@-1.0",
yading@11:             "red@-0.0",
yading@11:         };
yading@11: 
yading@11:         av_log_set_level(AV_LOG_DEBUG);
yading@11: 
yading@11:         for (i = 0;  i < FF_ARRAY_ELEMS(color_names); i++) {
yading@11:             if (av_parse_color(rgba, color_names[i], -1, NULL) >= 0)
yading@11:                 printf("%s -> R(%d) G(%d) B(%d) A(%d)\n",
yading@11:                        color_names[i], rgba[0], rgba[1], rgba[2], rgba[3]);
yading@11:             else
yading@11:                 printf("%s -> error\n", color_names[i]);
yading@11:         }
yading@11:     }
yading@11: 
yading@11:     printf("\nTesting av_small_strptime()\n");
yading@11:     {
yading@11:         int i;
yading@11:         struct tm tm = { 0 };
yading@11:         struct fmt_timespec_entry {
yading@11:             const char *fmt, *timespec;
yading@11:         } fmt_timespec_entries[] = {
yading@11:             { "%Y-%m-%d",                    "2012-12-21" },
yading@11:             { "%Y - %m - %d",                "2012-12-21" },
yading@11:             { "%Y-%m-%d %H:%M:%S",           "2012-12-21 20:12:21" },
yading@11:             { "  %Y - %m - %d %H : %M : %S", "   2012 - 12 -  21   20 : 12 : 21" },
yading@11:         };
yading@11: 
yading@11:         av_log_set_level(AV_LOG_DEBUG);
yading@11:         for (i = 0;  i < FF_ARRAY_ELEMS(fmt_timespec_entries); i++) {
yading@11:             char *p;
yading@11:             struct fmt_timespec_entry *e = &fmt_timespec_entries[i];
yading@11:             printf("fmt:'%s' spec:'%s' -> ", e->fmt, e->timespec);
yading@11:             p = av_small_strptime(e->timespec, e->fmt, &tm);
yading@11:             if (p) {
yading@11:                 printf("%04d-%02d-%2d %02d:%02d:%02d\n",
yading@11:                        1900+tm.tm_year, tm.tm_mon+1, tm.tm_mday,
yading@11:                        tm.tm_hour, tm.tm_min, tm.tm_sec);
yading@11:             } else {
yading@11:                 printf("error\n");
yading@11:             }
yading@11:         }
yading@11:     }
yading@11: 
yading@11:     printf("\nTesting av_parse_time()\n");
yading@11:     {
yading@11:         int i;
yading@11:         int64_t tv;
yading@11:         time_t tvi;
yading@11:         struct tm *tm;
yading@11:         static char tzstr[] = "TZ=CET-1";
yading@11:         const char *time_string[] = {
yading@11:             "now",
yading@11:             "12:35:46",
yading@11:             "2000-12-20 0:02:47.5z",
yading@11:             "2000-12-20T010247.6",
yading@11:         };
yading@11:         const char *duration_string[] = {
yading@11:             "2:34:56.79",
yading@11:             "-1:23:45.67",
yading@11:             "42.1729",
yading@11:             "-1729.42",
yading@11:             "12:34",
yading@11:         };
yading@11: 
yading@11:         av_log_set_level(AV_LOG_DEBUG);
yading@11:         putenv(tzstr);
yading@11:         printf("(now is 2012-03-17 09:14:13 +0100, local time is UTC+1)\n");
yading@11:         for (i = 0;  i < FF_ARRAY_ELEMS(time_string); i++) {
yading@11:             printf("%-24s -> ", time_string[i]);
yading@11:             if (av_parse_time(&tv, time_string[i], 0)) {
yading@11:                 printf("error\n");
yading@11:             } else {
yading@11:                 tvi = tv / 1000000;
yading@11:                 tm = gmtime(&tvi);
yading@11:                 printf("%14"PRIi64".%06d = %04d-%02d-%02dT%02d:%02d:%02dZ\n",
yading@11:                        tv / 1000000, (int)(tv % 1000000),
yading@11:                        tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
yading@11:                        tm->tm_hour, tm->tm_min, tm->tm_sec);
yading@11:             }
yading@11:         }
yading@11:         for (i = 0;  i < FF_ARRAY_ELEMS(duration_string); i++) {
yading@11:             printf("%-24s -> ", duration_string[i]);
yading@11:             if (av_parse_time(&tv, duration_string[i], 1)) {
yading@11:                 printf("error\n");
yading@11:             } else {
yading@11:                 printf("%+21"PRIi64"\n", tv);
yading@11:             }
yading@11:         }
yading@11:     }
yading@11: 
yading@11:     return 0;
yading@11: }
yading@11: 
yading@11: #endif /* TEST */