parseutils.c 27.7 KB
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/*
 * 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
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 * misc parsing utilities
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 */

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#include <time.h>
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#include "avstring.h"
#include "avutil.h"
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#include "common.h"
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#include "eval.h"
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#include "log.h"
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#include "random_seed.h"
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#include "parseutils.h"

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#ifdef TEST

#define av_get_random_seed av_get_random_seed_deterministic
static uint32_t av_get_random_seed_deterministic(void);

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#define time(t) 1331972053

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#endif

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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);
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    } else {
        av_reduce(&q->num, &q->den, q->num, q->den, max);
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    }

    return 0;
}

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typedef struct {
    const char *abbr;
    int width, height;
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} VideoSizeAbbr;
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typedef struct {
    const char *abbr;
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    AVRational rate;
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} VideoRateAbbr;
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static const VideoSizeAbbr video_size_abbrs[] = {
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    { "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 },
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    { "2k",       2048,1080 }, /* Digital Cinema System Specification */
    { "2kflat",   1998,1080 },
    { "2kscope",  2048, 858 },
    { "4k",       4096,2160 }, /* Digital Cinema System Specification */
    { "4kflat",   3996,2160 },
    { "4kscope",  4096,1716 },
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    { "nhd",       640,360  },
    { "hqvga",     240,160  },
    { "wqvga",     400,240  },
    { "fwqvga",    432,240  },
    { "hvga",      480,320  },
    { "qhd",       960,540  },
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};

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static const VideoRateAbbr video_rate_abbrs[]= {
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    { "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 } },
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};

int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
{
    int i;
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    int n = FF_ARRAY_ELEMS(video_size_abbrs);
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    const char *p;
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    int width = 0, height = 0;
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    for (i = 0; i < n; i++) {
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        if (!strcmp(video_size_abbrs[i].abbr, str)) {
            width  = video_size_abbrs[i].width;
            height = video_size_abbrs[i].height;
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            break;
        }
    }
    if (i == n) {
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        width = strtol(str, (void*)&p, 10);
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        if (*p)
            p++;
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        height = strtol(p, (void*)&p, 10);
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        /* trailing extraneous data detected, like in 123x345foobar */
        if (*p)
            return AVERROR(EINVAL);
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    }
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    if (width <= 0 || height <= 0)
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        return AVERROR(EINVAL);
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    *width_ptr  = width;
    *height_ptr = height;
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    return 0;
}

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int av_parse_video_rate(AVRational *rate, const char *arg)
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{
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    int i, ret;
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    int n = FF_ARRAY_ELEMS(video_rate_abbrs);
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    /* First, we check our abbreviation table */
    for (i = 0; i < n; ++i)
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        if (!strcmp(video_rate_abbrs[i].abbr, arg)) {
            *rate = video_rate_abbrs[i].rate;
            return 0;
        }
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    /* Then, we try to parse it as fraction */
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    if ((ret = av_parse_ratio_quiet(rate, arg, 1001000)) < 0)
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        return ret;
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    if (rate->num <= 0 || rate->den <= 0)
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        return AVERROR(EINVAL);
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    return 0;
}
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typedef struct {
    const char *name;            ///< a string representing the name of the color
    uint8_t     rgb_color[3];    ///< RGB values for the color
} ColorEntry;

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static const ColorEntry color_table[] = {
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    { "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 } },
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    { "LightGrey",            { 0xD3, 0xD3, 0xD3 } },
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    { "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)
{
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    return av_strcasecmp(lhs, ((const ColorEntry *)rhs)->name);
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}

#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;

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    if (!av_strcasecmp(color_string2, "random") || !av_strcasecmp(color_string2, "bikeshed")) {
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        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) {
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        double alpha;
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        const char *alpha_string = tail;
        if (!strncmp(alpha_string, "0x", 2)) {
            alpha = strtoul(alpha_string, &tail, 16);
        } else {
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            double norm_alpha = strtod(alpha_string, &tail);
            if (norm_alpha < 0.0 || norm_alpha > 1.0)
                alpha = 256;
            else
                alpha = 255 * norm_alpha;
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        }

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        if (tail == alpha_string || *tail || alpha > 255 || alpha < 0) {
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            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;
}

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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;
}

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/* 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;
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        if (!av_isdigit(c))
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            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;
}

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char *av_small_strptime(const char *p, const char *fmt, struct tm *dt)
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{
    int c, val;

    for(;;) {
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        /* consume time string until a non whitespace char is found */
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        while (av_isspace(*fmt)) {
            while (av_isspace(*p))
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                p++;
            fmt++;
        }
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        c = *fmt++;
        if (c == '\0') {
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            return (char *)p;
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        } else if (c == '%') {
            c = *fmt++;
            switch(c) {
            case 'H':
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            case 'J':
                val = date_get_num(&p, 0, c == 'H' ? 23 : INT_MAX, 2);
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                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++;
        }
    }
}

531
time_t av_timegm(struct tm *tm)
532 533 534 535 536 537 538 539 540 541
{
    time_t t;

    int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday;

    if (m < 3) {
        m += 12;
        y--;
    }

542
    t = 86400LL *
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        (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;
}

550
int av_parse_time(int64_t *timeval, const char *timestr, int duration)
551
{
552
    const char *p, *q;
553
    int64_t t;
554
    time_t now;
555
    struct tm dt = { 0 };
556
    int today = 0, negative = 0, microseconds = 0;
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    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",
    };

567
    p = timestr;
568
    q = NULL;
569
    *timeval = INT64_MIN;
570
    if (!duration) {
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        now = time(0);

        if (!av_strcasecmp(timestr, "now")) {
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            *timeval = (int64_t) now * 1000000;
            return 0;
        }

        /* parse the year-month-day part */
        for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) {
580
            q = av_small_strptime(p, date_fmt[i], &dt);
581
            if (q)
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                break;
        }

        /* if the year-month-day part is missing, then take the
         * current year-month-day time */
        if (!q) {
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            today = 1;
            q = p;
590
        }
591
        p = q;
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        if (*p == 'T' || *p == 't' || *p == ' ')
            p++;

        /* parse the hour-minute-second part */
        for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) {
598
            q = av_small_strptime(p, time_fmt[i], &dt);
599
            if (q)
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                break;
        }
    } else {
603
        /* parse timestr as a duration */
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        if (p[0] == '-') {
            negative = 1;
            ++p;
        }
608
        /* parse timestr as HH:MM:SS */
609
        q = av_small_strptime(p, "%J:%M:%S", &dt);
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        if (!q) {
            /* parse timestr as MM:SS */
            q = av_small_strptime(p, "%M:%S", &dt);
            dt.tm_hour = 0;
        }
615
        if (!q) {
616
            char *o;
617
            /* parse timestr as S+ */
618
            dt.tm_sec = strtol(p, &o, 10);
619
            if (o == p) /* the parsing didn't succeed */
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                return AVERROR(EINVAL);
            dt.tm_min = 0;
            dt.tm_hour = 0;
623
            q = o;
624 625 626 627
        }
    }

    /* Now we have all the fields that we can get */
628
    if (!q)
629
        return AVERROR(EINVAL);
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    /* parse the .m... part */
    if (*q == '.') {
        int n;
        q++;
        for (n = 100000; n >= 1; n /= 10, q++) {
636
            if (!av_isdigit(*q))
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                break;
            microseconds += n * (*q - '0');
        }
640
        while (av_isdigit(*q))
641
            q++;
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    }

    if (duration) {
        t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
    } else {
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        int is_utc = *q == 'Z' || *q == 'z';
        q += is_utc;
        if (today) { /* fill in today's date */
            struct tm dt2 = is_utc ? *gmtime(&now) : *localtime(&now);
            dt2.tm_hour = dt.tm_hour;
            dt2.tm_min  = dt.tm_min;
            dt2.tm_sec  = dt.tm_sec;
            dt = dt2;
655
        }
656
        t = is_utc ? av_timegm(&dt) : mktime(&dt);
657 658
    }

659 660 661
    /* Check that we are at the end of the string */
    if (*q)
        return AVERROR(EINVAL);
662

663 664
    t *= 1000000;
    t += microseconds;
665 666 667 668
    *timeval = negative ? -t : t;
    return 0;
}

669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707
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;
}

708 709
#ifdef TEST

710
static uint32_t randomv = MKTAG('L','A','V','U');
711 712 713

static uint32_t av_get_random_seed_deterministic(void)
{
714
    return randomv = randomv * 1664525 + 1013904223;
715 716
}

717 718 719 720 721
int main(void)
{
    printf("Testing av_parse_video_rate()\n");
    {
        int i;
722
        static const char *const rates[] = {
723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751
            "-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;
752
            AVRational q = { 0, 0 };
753
            ret = av_parse_video_rate(&q, rates[i]);
754 755
            printf("'%s' -> %d/%d %s\n",
                   rates[i], q.num, q.den, ret ? "ERROR" : "OK");
756 757 758
        }
    }

759 760 761 762
    printf("\nTesting av_parse_color()\n");
    {
        int i;
        uint8_t rgba[4];
763
        static const char *const color_names[] = {
764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805
            "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)
806 807
                printf("%s -> R(%d) G(%d) B(%d) A(%d)\n",
                       color_names[i], rgba[0], rgba[1], rgba[2], rgba[3]);
808 809
            else
                printf("%s -> error\n", color_names[i]);
810 811 812
        }
    }

813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841
    printf("\nTesting av_small_strptime()\n");
    {
        int i;
        struct tm tm = { 0 };
        struct fmt_timespec_entry {
            const char *fmt, *timespec;
        } fmt_timespec_entries[] = {
            { "%Y-%m-%d",                    "2012-12-21" },
            { "%Y - %m - %d",                "2012-12-21" },
            { "%Y-%m-%d %H:%M:%S",           "2012-12-21 20:12:21" },
            { "  %Y - %m - %d %H : %M : %S", "   2012 - 12 -  21   20 : 12 : 21" },
        };

        av_log_set_level(AV_LOG_DEBUG);
        for (i = 0;  i < FF_ARRAY_ELEMS(fmt_timespec_entries); i++) {
            char *p;
            struct fmt_timespec_entry *e = &fmt_timespec_entries[i];
            printf("fmt:'%s' spec:'%s' -> ", e->fmt, e->timespec);
            p = av_small_strptime(e->timespec, e->fmt, &tm);
            if (p) {
                printf("%04d-%02d-%2d %02d:%02d:%02d\n",
                       1900+tm.tm_year, tm.tm_mon+1, tm.tm_mday,
                       tm.tm_hour, tm.tm_min, tm.tm_sec);
            } else {
                printf("error\n");
            }
        }
    }

842 843 844 845 846 847
    printf("\nTesting av_parse_time()\n");
    {
        int i;
        int64_t tv;
        time_t tvi;
        struct tm *tm;
848
        static char tzstr[] = "TZ=CET-1";
849
        static const char * const time_string[] = {
850 851 852 853 854
            "now",
            "12:35:46",
            "2000-12-20 0:02:47.5z",
            "2000-12-20T010247.6",
        };
855
        static const char * const duration_string[] = {
856 857 858 859 860 861 862 863
            "2:34:56.79",
            "-1:23:45.67",
            "42.1729",
            "-1729.42",
            "12:34",
        };

        av_log_set_level(AV_LOG_DEBUG);
864
        putenv(tzstr);
865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888
        printf("(now is 2012-03-17 09:14:13 +0100, local time is UTC+1)\n");
        for (i = 0;  i < FF_ARRAY_ELEMS(time_string); i++) {
            printf("%-24s -> ", time_string[i]);
            if (av_parse_time(&tv, time_string[i], 0)) {
                printf("error\n");
            } else {
                tvi = tv / 1000000;
                tm = gmtime(&tvi);
                printf("%14"PRIi64".%06d = %04d-%02d-%02dT%02d:%02d:%02dZ\n",
                       tv / 1000000, (int)(tv % 1000000),
                       tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
                       tm->tm_hour, tm->tm_min, tm->tm_sec);
            }
        }
        for (i = 0;  i < FF_ARRAY_ELEMS(duration_string); i++) {
            printf("%-24s -> ", duration_string[i]);
            if (av_parse_time(&tv, duration_string[i], 1)) {
                printf("error\n");
            } else {
                printf("%+21"PRIi64"\n", tv);
            }
        }
    }

889 890 891 892
    return 0;
}

#endif /* TEST */