ffmpeg / libavutil / parseutils.c @ f6c7375a
History | View | Annotate | Download (22.1 KB)
| 1 |
/*
|
|---|---|
| 2 |
* This file is part of FFmpeg.
|
| 3 |
*
|
| 4 |
* FFmpeg is free software; you can redistribute it and/or
|
| 5 |
* modify it under the terms of the GNU Lesser General Public
|
| 6 |
* License as published by the Free Software Foundation; either
|
| 7 |
* version 2.1 of the License, or (at your option) any later version.
|
| 8 |
*
|
| 9 |
* FFmpeg is distributed in the hope that it will be useful,
|
| 10 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 11 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
| 12 |
* Lesser General Public License for more details.
|
| 13 |
*
|
| 14 |
* You should have received a copy of the GNU Lesser General Public
|
| 15 |
* License along with FFmpeg; if not, write to the Free Software
|
| 16 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
| 17 |
*/
|
| 18 |
|
| 19 |
/**
|
| 20 |
* @file
|
| 21 |
* misc parsing utilities
|
| 22 |
*/
|
| 23 |
|
| 24 |
#include <strings.h> |
| 25 |
#include <sys/time.h> |
| 26 |
#include <time.h> |
| 27 |
#include "parseutils.h" |
| 28 |
#include "libavutil/avutil.h" |
| 29 |
#include "libavutil/eval.h" |
| 30 |
#include "libavutil/avstring.h" |
| 31 |
#include "libavutil/random_seed.h" |
| 32 |
|
| 33 |
typedef struct { |
| 34 |
const char *abbr; |
| 35 |
int width, height;
|
| 36 |
} VideoSizeAbbr; |
| 37 |
|
| 38 |
typedef struct { |
| 39 |
const char *abbr; |
| 40 |
AVRational rate; |
| 41 |
} VideoRateAbbr; |
| 42 |
|
| 43 |
static const VideoSizeAbbr video_size_abbrs[] = { |
| 44 |
{ "ntsc", 720, 480 },
|
| 45 |
{ "pal", 720, 576 },
|
| 46 |
{ "qntsc", 352, 240 }, /* VCD compliant NTSC */
|
| 47 |
{ "qpal", 352, 288 }, /* VCD compliant PAL */
|
| 48 |
{ "sntsc", 640, 480 }, /* square pixel NTSC */
|
| 49 |
{ "spal", 768, 576 }, /* square pixel PAL */
|
| 50 |
{ "film", 352, 240 },
|
| 51 |
{ "ntsc-film", 352, 240 },
|
| 52 |
{ "sqcif", 128, 96 },
|
| 53 |
{ "qcif", 176, 144 },
|
| 54 |
{ "cif", 352, 288 },
|
| 55 |
{ "4cif", 704, 576 },
|
| 56 |
{ "16cif", 1408,1152 },
|
| 57 |
{ "qqvga", 160, 120 },
|
| 58 |
{ "qvga", 320, 240 },
|
| 59 |
{ "vga", 640, 480 },
|
| 60 |
{ "svga", 800, 600 },
|
| 61 |
{ "xga", 1024, 768 },
|
| 62 |
{ "uxga", 1600,1200 },
|
| 63 |
{ "qxga", 2048,1536 },
|
| 64 |
{ "sxga", 1280,1024 },
|
| 65 |
{ "qsxga", 2560,2048 },
|
| 66 |
{ "hsxga", 5120,4096 },
|
| 67 |
{ "wvga", 852, 480 },
|
| 68 |
{ "wxga", 1366, 768 },
|
| 69 |
{ "wsxga", 1600,1024 },
|
| 70 |
{ "wuxga", 1920,1200 },
|
| 71 |
{ "woxga", 2560,1600 },
|
| 72 |
{ "wqsxga", 3200,2048 },
|
| 73 |
{ "wquxga", 3840,2400 },
|
| 74 |
{ "whsxga", 6400,4096 },
|
| 75 |
{ "whuxga", 7680,4800 },
|
| 76 |
{ "cga", 320, 200 },
|
| 77 |
{ "ega", 640, 350 },
|
| 78 |
{ "hd480", 852, 480 },
|
| 79 |
{ "hd720", 1280, 720 },
|
| 80 |
{ "hd1080", 1920,1080 },
|
| 81 |
}; |
| 82 |
|
| 83 |
static const VideoRateAbbr video_rate_abbrs[]= { |
| 84 |
{ "ntsc", { 30000, 1001 } },
|
| 85 |
{ "pal", { 25, 1 } },
|
| 86 |
{ "qntsc", { 30000, 1001 } }, /* VCD compliant NTSC */
|
| 87 |
{ "qpal", { 25, 1 } }, /* VCD compliant PAL */
|
| 88 |
{ "sntsc", { 30000, 1001 } }, /* square pixel NTSC */
|
| 89 |
{ "spal", { 25, 1 } }, /* square pixel PAL */
|
| 90 |
{ "film", { 24, 1 } },
|
| 91 |
{ "ntsc-film", { 24000, 1001 } },
|
| 92 |
}; |
| 93 |
|
| 94 |
int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str) |
| 95 |
{
|
| 96 |
int i;
|
| 97 |
int n = FF_ARRAY_ELEMS(video_size_abbrs);
|
| 98 |
char *p;
|
| 99 |
int width = 0, height = 0; |
| 100 |
|
| 101 |
for (i = 0; i < n; i++) { |
| 102 |
if (!strcmp(video_size_abbrs[i].abbr, str)) {
|
| 103 |
width = video_size_abbrs[i].width; |
| 104 |
height = video_size_abbrs[i].height; |
| 105 |
break;
|
| 106 |
} |
| 107 |
} |
| 108 |
if (i == n) {
|
| 109 |
p = str; |
| 110 |
width = strtol(p, &p, 10);
|
| 111 |
if (*p)
|
| 112 |
p++; |
| 113 |
height = strtol(p, &p, 10);
|
| 114 |
} |
| 115 |
if (width <= 0 || height <= 0) |
| 116 |
return AVERROR(EINVAL);
|
| 117 |
*width_ptr = width; |
| 118 |
*height_ptr = height; |
| 119 |
return 0; |
| 120 |
} |
| 121 |
|
| 122 |
int av_parse_video_rate(AVRational *rate, const char *arg) |
| 123 |
{
|
| 124 |
int i, ret;
|
| 125 |
int n = FF_ARRAY_ELEMS(video_rate_abbrs);
|
| 126 |
double res;
|
| 127 |
|
| 128 |
/* First, we check our abbreviation table */
|
| 129 |
for (i = 0; i < n; ++i) |
| 130 |
if (!strcmp(video_rate_abbrs[i].abbr, arg)) {
|
| 131 |
*rate = video_rate_abbrs[i].rate; |
| 132 |
return 0; |
| 133 |
} |
| 134 |
|
| 135 |
/* Then, we try to parse it as fraction */
|
| 136 |
if ((ret = av_expr_parse_and_eval(&res, arg, NULL, NULL, NULL, NULL, NULL, NULL, |
| 137 |
NULL, 0, NULL)) < 0) |
| 138 |
return ret;
|
| 139 |
*rate = av_d2q(res, 1001000);
|
| 140 |
if (rate->num <= 0 || rate->den <= 0) |
| 141 |
return AVERROR(EINVAL);
|
| 142 |
return 0; |
| 143 |
} |
| 144 |
|
| 145 |
typedef struct { |
| 146 |
const char *name; ///< a string representing the name of the color |
| 147 |
uint8_t rgb_color[3]; ///< RGB values for the color |
| 148 |
} ColorEntry; |
| 149 |
|
| 150 |
static ColorEntry color_table[] = {
|
| 151 |
{ "AliceBlue", { 0xF0, 0xF8, 0xFF } },
|
| 152 |
{ "AntiqueWhite", { 0xFA, 0xEB, 0xD7 } },
|
| 153 |
{ "Aqua", { 0x00, 0xFF, 0xFF } },
|
| 154 |
{ "Aquamarine", { 0x7F, 0xFF, 0xD4 } },
|
| 155 |
{ "Azure", { 0xF0, 0xFF, 0xFF } },
|
| 156 |
{ "Beige", { 0xF5, 0xF5, 0xDC } },
|
| 157 |
{ "Bisque", { 0xFF, 0xE4, 0xC4 } },
|
| 158 |
{ "Black", { 0x00, 0x00, 0x00 } },
|
| 159 |
{ "BlanchedAlmond", { 0xFF, 0xEB, 0xCD } },
|
| 160 |
{ "Blue", { 0x00, 0x00, 0xFF } },
|
| 161 |
{ "BlueViolet", { 0x8A, 0x2B, 0xE2 } },
|
| 162 |
{ "Brown", { 0xA5, 0x2A, 0x2A } },
|
| 163 |
{ "BurlyWood", { 0xDE, 0xB8, 0x87 } },
|
| 164 |
{ "CadetBlue", { 0x5F, 0x9E, 0xA0 } },
|
| 165 |
{ "Chartreuse", { 0x7F, 0xFF, 0x00 } },
|
| 166 |
{ "Chocolate", { 0xD2, 0x69, 0x1E } },
|
| 167 |
{ "Coral", { 0xFF, 0x7F, 0x50 } },
|
| 168 |
{ "CornflowerBlue", { 0x64, 0x95, 0xED } },
|
| 169 |
{ "Cornsilk", { 0xFF, 0xF8, 0xDC } },
|
| 170 |
{ "Crimson", { 0xDC, 0x14, 0x3C } },
|
| 171 |
{ "Cyan", { 0x00, 0xFF, 0xFF } },
|
| 172 |
{ "DarkBlue", { 0x00, 0x00, 0x8B } },
|
| 173 |
{ "DarkCyan", { 0x00, 0x8B, 0x8B } },
|
| 174 |
{ "DarkGoldenRod", { 0xB8, 0x86, 0x0B } },
|
| 175 |
{ "DarkGray", { 0xA9, 0xA9, 0xA9 } },
|
| 176 |
{ "DarkGreen", { 0x00, 0x64, 0x00 } },
|
| 177 |
{ "DarkKhaki", { 0xBD, 0xB7, 0x6B } },
|
| 178 |
{ "DarkMagenta", { 0x8B, 0x00, 0x8B } },
|
| 179 |
{ "DarkOliveGreen", { 0x55, 0x6B, 0x2F } },
|
| 180 |
{ "Darkorange", { 0xFF, 0x8C, 0x00 } },
|
| 181 |
{ "DarkOrchid", { 0x99, 0x32, 0xCC } },
|
| 182 |
{ "DarkRed", { 0x8B, 0x00, 0x00 } },
|
| 183 |
{ "DarkSalmon", { 0xE9, 0x96, 0x7A } },
|
| 184 |
{ "DarkSeaGreen", { 0x8F, 0xBC, 0x8F } },
|
| 185 |
{ "DarkSlateBlue", { 0x48, 0x3D, 0x8B } },
|
| 186 |
{ "DarkSlateGray", { 0x2F, 0x4F, 0x4F } },
|
| 187 |
{ "DarkTurquoise", { 0x00, 0xCE, 0xD1 } },
|
| 188 |
{ "DarkViolet", { 0x94, 0x00, 0xD3 } },
|
| 189 |
{ "DeepPink", { 0xFF, 0x14, 0x93 } },
|
| 190 |
{ "DeepSkyBlue", { 0x00, 0xBF, 0xFF } },
|
| 191 |
{ "DimGray", { 0x69, 0x69, 0x69 } },
|
| 192 |
{ "DodgerBlue", { 0x1E, 0x90, 0xFF } },
|
| 193 |
{ "FireBrick", { 0xB2, 0x22, 0x22 } },
|
| 194 |
{ "FloralWhite", { 0xFF, 0xFA, 0xF0 } },
|
| 195 |
{ "ForestGreen", { 0x22, 0x8B, 0x22 } },
|
| 196 |
{ "Fuchsia", { 0xFF, 0x00, 0xFF } },
|
| 197 |
{ "Gainsboro", { 0xDC, 0xDC, 0xDC } },
|
| 198 |
{ "GhostWhite", { 0xF8, 0xF8, 0xFF } },
|
| 199 |
{ "Gold", { 0xFF, 0xD7, 0x00 } },
|
| 200 |
{ "GoldenRod", { 0xDA, 0xA5, 0x20 } },
|
| 201 |
{ "Gray", { 0x80, 0x80, 0x80 } },
|
| 202 |
{ "Green", { 0x00, 0x80, 0x00 } },
|
| 203 |
{ "GreenYellow", { 0xAD, 0xFF, 0x2F } },
|
| 204 |
{ "HoneyDew", { 0xF0, 0xFF, 0xF0 } },
|
| 205 |
{ "HotPink", { 0xFF, 0x69, 0xB4 } },
|
| 206 |
{ "IndianRed", { 0xCD, 0x5C, 0x5C } },
|
| 207 |
{ "Indigo", { 0x4B, 0x00, 0x82 } },
|
| 208 |
{ "Ivory", { 0xFF, 0xFF, 0xF0 } },
|
| 209 |
{ "Khaki", { 0xF0, 0xE6, 0x8C } },
|
| 210 |
{ "Lavender", { 0xE6, 0xE6, 0xFA } },
|
| 211 |
{ "LavenderBlush", { 0xFF, 0xF0, 0xF5 } },
|
| 212 |
{ "LawnGreen", { 0x7C, 0xFC, 0x00 } },
|
| 213 |
{ "LemonChiffon", { 0xFF, 0xFA, 0xCD } },
|
| 214 |
{ "LightBlue", { 0xAD, 0xD8, 0xE6 } },
|
| 215 |
{ "LightCoral", { 0xF0, 0x80, 0x80 } },
|
| 216 |
{ "LightCyan", { 0xE0, 0xFF, 0xFF } },
|
| 217 |
{ "LightGoldenRodYellow", { 0xFA, 0xFA, 0xD2 } },
|
| 218 |
{ "LightGrey", { 0xD3, 0xD3, 0xD3 } },
|
| 219 |
{ "LightGreen", { 0x90, 0xEE, 0x90 } },
|
| 220 |
{ "LightPink", { 0xFF, 0xB6, 0xC1 } },
|
| 221 |
{ "LightSalmon", { 0xFF, 0xA0, 0x7A } },
|
| 222 |
{ "LightSeaGreen", { 0x20, 0xB2, 0xAA } },
|
| 223 |
{ "LightSkyBlue", { 0x87, 0xCE, 0xFA } },
|
| 224 |
{ "LightSlateGray", { 0x77, 0x88, 0x99 } },
|
| 225 |
{ "LightSteelBlue", { 0xB0, 0xC4, 0xDE } },
|
| 226 |
{ "LightYellow", { 0xFF, 0xFF, 0xE0 } },
|
| 227 |
{ "Lime", { 0x00, 0xFF, 0x00 } },
|
| 228 |
{ "LimeGreen", { 0x32, 0xCD, 0x32 } },
|
| 229 |
{ "Linen", { 0xFA, 0xF0, 0xE6 } },
|
| 230 |
{ "Magenta", { 0xFF, 0x00, 0xFF } },
|
| 231 |
{ "Maroon", { 0x80, 0x00, 0x00 } },
|
| 232 |
{ "MediumAquaMarine", { 0x66, 0xCD, 0xAA } },
|
| 233 |
{ "MediumBlue", { 0x00, 0x00, 0xCD } },
|
| 234 |
{ "MediumOrchid", { 0xBA, 0x55, 0xD3 } },
|
| 235 |
{ "MediumPurple", { 0x93, 0x70, 0xD8 } },
|
| 236 |
{ "MediumSeaGreen", { 0x3C, 0xB3, 0x71 } },
|
| 237 |
{ "MediumSlateBlue", { 0x7B, 0x68, 0xEE } },
|
| 238 |
{ "MediumSpringGreen", { 0x00, 0xFA, 0x9A } },
|
| 239 |
{ "MediumTurquoise", { 0x48, 0xD1, 0xCC } },
|
| 240 |
{ "MediumVioletRed", { 0xC7, 0x15, 0x85 } },
|
| 241 |
{ "MidnightBlue", { 0x19, 0x19, 0x70 } },
|
| 242 |
{ "MintCream", { 0xF5, 0xFF, 0xFA } },
|
| 243 |
{ "MistyRose", { 0xFF, 0xE4, 0xE1 } },
|
| 244 |
{ "Moccasin", { 0xFF, 0xE4, 0xB5 } },
|
| 245 |
{ "NavajoWhite", { 0xFF, 0xDE, 0xAD } },
|
| 246 |
{ "Navy", { 0x00, 0x00, 0x80 } },
|
| 247 |
{ "OldLace", { 0xFD, 0xF5, 0xE6 } },
|
| 248 |
{ "Olive", { 0x80, 0x80, 0x00 } },
|
| 249 |
{ "OliveDrab", { 0x6B, 0x8E, 0x23 } },
|
| 250 |
{ "Orange", { 0xFF, 0xA5, 0x00 } },
|
| 251 |
{ "OrangeRed", { 0xFF, 0x45, 0x00 } },
|
| 252 |
{ "Orchid", { 0xDA, 0x70, 0xD6 } },
|
| 253 |
{ "PaleGoldenRod", { 0xEE, 0xE8, 0xAA } },
|
| 254 |
{ "PaleGreen", { 0x98, 0xFB, 0x98 } },
|
| 255 |
{ "PaleTurquoise", { 0xAF, 0xEE, 0xEE } },
|
| 256 |
{ "PaleVioletRed", { 0xD8, 0x70, 0x93 } },
|
| 257 |
{ "PapayaWhip", { 0xFF, 0xEF, 0xD5 } },
|
| 258 |
{ "PeachPuff", { 0xFF, 0xDA, 0xB9 } },
|
| 259 |
{ "Peru", { 0xCD, 0x85, 0x3F } },
|
| 260 |
{ "Pink", { 0xFF, 0xC0, 0xCB } },
|
| 261 |
{ "Plum", { 0xDD, 0xA0, 0xDD } },
|
| 262 |
{ "PowderBlue", { 0xB0, 0xE0, 0xE6 } },
|
| 263 |
{ "Purple", { 0x80, 0x00, 0x80 } },
|
| 264 |
{ "Red", { 0xFF, 0x00, 0x00 } },
|
| 265 |
{ "RosyBrown", { 0xBC, 0x8F, 0x8F } },
|
| 266 |
{ "RoyalBlue", { 0x41, 0x69, 0xE1 } },
|
| 267 |
{ "SaddleBrown", { 0x8B, 0x45, 0x13 } },
|
| 268 |
{ "Salmon", { 0xFA, 0x80, 0x72 } },
|
| 269 |
{ "SandyBrown", { 0xF4, 0xA4, 0x60 } },
|
| 270 |
{ "SeaGreen", { 0x2E, 0x8B, 0x57 } },
|
| 271 |
{ "SeaShell", { 0xFF, 0xF5, 0xEE } },
|
| 272 |
{ "Sienna", { 0xA0, 0x52, 0x2D } },
|
| 273 |
{ "Silver", { 0xC0, 0xC0, 0xC0 } },
|
| 274 |
{ "SkyBlue", { 0x87, 0xCE, 0xEB } },
|
| 275 |
{ "SlateBlue", { 0x6A, 0x5A, 0xCD } },
|
| 276 |
{ "SlateGray", { 0x70, 0x80, 0x90 } },
|
| 277 |
{ "Snow", { 0xFF, 0xFA, 0xFA } },
|
| 278 |
{ "SpringGreen", { 0x00, 0xFF, 0x7F } },
|
| 279 |
{ "SteelBlue", { 0x46, 0x82, 0xB4 } },
|
| 280 |
{ "Tan", { 0xD2, 0xB4, 0x8C } },
|
| 281 |
{ "Teal", { 0x00, 0x80, 0x80 } },
|
| 282 |
{ "Thistle", { 0xD8, 0xBF, 0xD8 } },
|
| 283 |
{ "Tomato", { 0xFF, 0x63, 0x47 } },
|
| 284 |
{ "Turquoise", { 0x40, 0xE0, 0xD0 } },
|
| 285 |
{ "Violet", { 0xEE, 0x82, 0xEE } },
|
| 286 |
{ "Wheat", { 0xF5, 0xDE, 0xB3 } },
|
| 287 |
{ "White", { 0xFF, 0xFF, 0xFF } },
|
| 288 |
{ "WhiteSmoke", { 0xF5, 0xF5, 0xF5 } },
|
| 289 |
{ "Yellow", { 0xFF, 0xFF, 0x00 } },
|
| 290 |
{ "YellowGreen", { 0x9A, 0xCD, 0x32 } },
|
| 291 |
}; |
| 292 |
|
| 293 |
static int color_table_compare(const void *lhs, const void *rhs) |
| 294 |
{
|
| 295 |
return strcasecmp(lhs, ((const ColorEntry *)rhs)->name); |
| 296 |
} |
| 297 |
|
| 298 |
#define ALPHA_SEP '@' |
| 299 |
|
| 300 |
int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen, |
| 301 |
void *log_ctx)
|
| 302 |
{
|
| 303 |
char *tail, color_string2[128]; |
| 304 |
const ColorEntry *entry;
|
| 305 |
int len, hex_offset = 0; |
| 306 |
|
| 307 |
if (color_string[0] == '#') { |
| 308 |
hex_offset = 1;
|
| 309 |
} else if (!strncmp(color_string, "0x", 2)) |
| 310 |
hex_offset = 2;
|
| 311 |
|
| 312 |
if (slen < 0) |
| 313 |
slen = strlen(color_string); |
| 314 |
av_strlcpy(color_string2, color_string + hex_offset, |
| 315 |
FFMIN(slen-hex_offset+1, sizeof(color_string2))); |
| 316 |
if ((tail = strchr(color_string2, ALPHA_SEP)))
|
| 317 |
*tail++ = 0;
|
| 318 |
len = strlen(color_string2); |
| 319 |
rgba_color[3] = 255; |
| 320 |
|
| 321 |
if (!strcasecmp(color_string2, "random") || !strcasecmp(color_string2, "bikeshed")) { |
| 322 |
int rgba = av_get_random_seed();
|
| 323 |
rgba_color[0] = rgba >> 24; |
| 324 |
rgba_color[1] = rgba >> 16; |
| 325 |
rgba_color[2] = rgba >> 8; |
| 326 |
rgba_color[3] = rgba;
|
| 327 |
} else if (hex_offset || |
| 328 |
strspn(color_string2, "0123456789ABCDEFabcdef") == len) {
|
| 329 |
char *tail;
|
| 330 |
unsigned int rgba = strtoul(color_string2, &tail, 16); |
| 331 |
|
| 332 |
if (*tail || (len != 6 && len != 8)) { |
| 333 |
av_log(log_ctx, AV_LOG_ERROR, "Invalid 0xRRGGBB[AA] color string: '%s'\n", color_string2);
|
| 334 |
return AVERROR(EINVAL);
|
| 335 |
} |
| 336 |
if (len == 8) { |
| 337 |
rgba_color[3] = rgba;
|
| 338 |
rgba >>= 8;
|
| 339 |
} |
| 340 |
rgba_color[0] = rgba >> 16; |
| 341 |
rgba_color[1] = rgba >> 8; |
| 342 |
rgba_color[2] = rgba;
|
| 343 |
} else {
|
| 344 |
entry = bsearch(color_string2, |
| 345 |
color_table, |
| 346 |
FF_ARRAY_ELEMS(color_table), |
| 347 |
sizeof(ColorEntry),
|
| 348 |
color_table_compare); |
| 349 |
if (!entry) {
|
| 350 |
av_log(log_ctx, AV_LOG_ERROR, "Cannot find color '%s'\n", color_string2);
|
| 351 |
return AVERROR(EINVAL);
|
| 352 |
} |
| 353 |
memcpy(rgba_color, entry->rgb_color, 3);
|
| 354 |
} |
| 355 |
|
| 356 |
if (tail) {
|
| 357 |
unsigned long int alpha; |
| 358 |
const char *alpha_string = tail; |
| 359 |
if (!strncmp(alpha_string, "0x", 2)) { |
| 360 |
alpha = strtoul(alpha_string, &tail, 16);
|
| 361 |
} else {
|
| 362 |
alpha = 255 * strtod(alpha_string, &tail);
|
| 363 |
} |
| 364 |
|
| 365 |
if (tail == alpha_string || *tail || alpha > 255) { |
| 366 |
av_log(log_ctx, AV_LOG_ERROR, "Invalid alpha value specifier '%s' in '%s'\n",
|
| 367 |
alpha_string, color_string); |
| 368 |
return AVERROR(EINVAL);
|
| 369 |
} |
| 370 |
rgba_color[3] = alpha;
|
| 371 |
} |
| 372 |
|
| 373 |
return 0; |
| 374 |
} |
| 375 |
|
| 376 |
/* get a positive number between n_min and n_max, for a maximum length
|
| 377 |
of len_max. Return -1 if error. */
|
| 378 |
static int date_get_num(const char **pp, |
| 379 |
int n_min, int n_max, int len_max) |
| 380 |
{
|
| 381 |
int i, val, c;
|
| 382 |
const char *p; |
| 383 |
|
| 384 |
p = *pp; |
| 385 |
val = 0;
|
| 386 |
for(i = 0; i < len_max; i++) { |
| 387 |
c = *p; |
| 388 |
if (!isdigit(c))
|
| 389 |
break;
|
| 390 |
val = (val * 10) + c - '0'; |
| 391 |
p++; |
| 392 |
} |
| 393 |
/* no number read ? */
|
| 394 |
if (p == *pp)
|
| 395 |
return -1; |
| 396 |
if (val < n_min || val > n_max)
|
| 397 |
return -1; |
| 398 |
*pp = p; |
| 399 |
return val;
|
| 400 |
} |
| 401 |
|
| 402 |
/* small strptime for ffmpeg */
|
| 403 |
static
|
| 404 |
const char *small_strptime(const char *p, const char *fmt, |
| 405 |
struct tm *dt)
|
| 406 |
{
|
| 407 |
int c, val;
|
| 408 |
|
| 409 |
for(;;) {
|
| 410 |
c = *fmt++; |
| 411 |
if (c == '\0') { |
| 412 |
return p;
|
| 413 |
} else if (c == '%') { |
| 414 |
c = *fmt++; |
| 415 |
switch(c) {
|
| 416 |
case 'H': |
| 417 |
val = date_get_num(&p, 0, 23, 2); |
| 418 |
if (val == -1) |
| 419 |
return NULL; |
| 420 |
dt->tm_hour = val; |
| 421 |
break;
|
| 422 |
case 'M': |
| 423 |
val = date_get_num(&p, 0, 59, 2); |
| 424 |
if (val == -1) |
| 425 |
return NULL; |
| 426 |
dt->tm_min = val; |
| 427 |
break;
|
| 428 |
case 'S': |
| 429 |
val = date_get_num(&p, 0, 59, 2); |
| 430 |
if (val == -1) |
| 431 |
return NULL; |
| 432 |
dt->tm_sec = val; |
| 433 |
break;
|
| 434 |
case 'Y': |
| 435 |
val = date_get_num(&p, 0, 9999, 4); |
| 436 |
if (val == -1) |
| 437 |
return NULL; |
| 438 |
dt->tm_year = val - 1900;
|
| 439 |
break;
|
| 440 |
case 'm': |
| 441 |
val = date_get_num(&p, 1, 12, 2); |
| 442 |
if (val == -1) |
| 443 |
return NULL; |
| 444 |
dt->tm_mon = val - 1;
|
| 445 |
break;
|
| 446 |
case 'd': |
| 447 |
val = date_get_num(&p, 1, 31, 2); |
| 448 |
if (val == -1) |
| 449 |
return NULL; |
| 450 |
dt->tm_mday = val; |
| 451 |
break;
|
| 452 |
case '%': |
| 453 |
goto match;
|
| 454 |
default:
|
| 455 |
return NULL; |
| 456 |
} |
| 457 |
} else {
|
| 458 |
match:
|
| 459 |
if (c != *p)
|
| 460 |
return NULL; |
| 461 |
p++; |
| 462 |
} |
| 463 |
} |
| 464 |
return p;
|
| 465 |
} |
| 466 |
|
| 467 |
static time_t mktimegm(struct tm *tm) |
| 468 |
{
|
| 469 |
time_t t; |
| 470 |
|
| 471 |
int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday; |
| 472 |
|
| 473 |
if (m < 3) { |
| 474 |
m += 12;
|
| 475 |
y--; |
| 476 |
} |
| 477 |
|
| 478 |
t = 86400 *
|
| 479 |
(d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 + y / 400 - 719469); |
| 480 |
|
| 481 |
t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec; |
| 482 |
|
| 483 |
return t;
|
| 484 |
} |
| 485 |
|
| 486 |
int av_parse_time(int64_t *timeval, const char *datestr, int duration) |
| 487 |
{
|
| 488 |
const char *p; |
| 489 |
int64_t t; |
| 490 |
struct tm dt;
|
| 491 |
int i;
|
| 492 |
static const char * const date_fmt[] = { |
| 493 |
"%Y-%m-%d",
|
| 494 |
"%Y%m%d",
|
| 495 |
}; |
| 496 |
static const char * const time_fmt[] = { |
| 497 |
"%H:%M:%S",
|
| 498 |
"%H%M%S",
|
| 499 |
}; |
| 500 |
const char *q; |
| 501 |
int is_utc, len;
|
| 502 |
char lastch;
|
| 503 |
int negative = 0; |
| 504 |
|
| 505 |
#undef time
|
| 506 |
time_t now = time(0);
|
| 507 |
|
| 508 |
len = strlen(datestr); |
| 509 |
if (len > 0) |
| 510 |
lastch = datestr[len - 1];
|
| 511 |
else
|
| 512 |
lastch = '\0';
|
| 513 |
is_utc = (lastch == 'z' || lastch == 'Z'); |
| 514 |
|
| 515 |
memset(&dt, 0, sizeof(dt)); |
| 516 |
|
| 517 |
p = datestr; |
| 518 |
q = NULL;
|
| 519 |
if (!duration) {
|
| 520 |
if (!strncasecmp(datestr, "now", len)) { |
| 521 |
*timeval = (int64_t) now * 1000000;
|
| 522 |
return 0; |
| 523 |
} |
| 524 |
|
| 525 |
/* parse the year-month-day part */
|
| 526 |
for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) { |
| 527 |
q = small_strptime(p, date_fmt[i], &dt); |
| 528 |
if (q) {
|
| 529 |
break;
|
| 530 |
} |
| 531 |
} |
| 532 |
|
| 533 |
/* if the year-month-day part is missing, then take the
|
| 534 |
* current year-month-day time */
|
| 535 |
if (!q) {
|
| 536 |
if (is_utc) {
|
| 537 |
dt = *gmtime(&now); |
| 538 |
} else {
|
| 539 |
dt = *localtime(&now); |
| 540 |
} |
| 541 |
dt.tm_hour = dt.tm_min = dt.tm_sec = 0;
|
| 542 |
} else {
|
| 543 |
p = q; |
| 544 |
} |
| 545 |
|
| 546 |
if (*p == 'T' || *p == 't' || *p == ' ') |
| 547 |
p++; |
| 548 |
|
| 549 |
/* parse the hour-minute-second part */
|
| 550 |
for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) { |
| 551 |
q = small_strptime(p, time_fmt[i], &dt); |
| 552 |
if (q) {
|
| 553 |
break;
|
| 554 |
} |
| 555 |
} |
| 556 |
} else {
|
| 557 |
/* parse datestr as a duration */
|
| 558 |
if (p[0] == '-') { |
| 559 |
negative = 1;
|
| 560 |
++p; |
| 561 |
} |
| 562 |
/* parse datestr as HH:MM:SS */
|
| 563 |
q = small_strptime(p, time_fmt[0], &dt);
|
| 564 |
if (!q) {
|
| 565 |
/* parse datestr as S+ */
|
| 566 |
dt.tm_sec = strtol(p, (char **)&q, 10); |
| 567 |
if (q == p) {
|
| 568 |
/* the parsing didn't succeed */
|
| 569 |
*timeval = INT64_MIN; |
| 570 |
return AVERROR(EINVAL);
|
| 571 |
} |
| 572 |
dt.tm_min = 0;
|
| 573 |
dt.tm_hour = 0;
|
| 574 |
} |
| 575 |
} |
| 576 |
|
| 577 |
/* Now we have all the fields that we can get */
|
| 578 |
if (!q) {
|
| 579 |
*timeval = INT64_MIN; |
| 580 |
return AVERROR(EINVAL);
|
| 581 |
} |
| 582 |
|
| 583 |
if (duration) {
|
| 584 |
t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec; |
| 585 |
} else {
|
| 586 |
dt.tm_isdst = -1; /* unknown */ |
| 587 |
if (is_utc) {
|
| 588 |
t = mktimegm(&dt); |
| 589 |
} else {
|
| 590 |
t = mktime(&dt); |
| 591 |
} |
| 592 |
} |
| 593 |
|
| 594 |
t *= 1000000;
|
| 595 |
|
| 596 |
/* parse the .m... part */
|
| 597 |
if (*q == '.') { |
| 598 |
int val, n;
|
| 599 |
q++; |
| 600 |
for (val = 0, n = 100000; n >= 1; n /= 10, q++) { |
| 601 |
if (!isdigit(*q))
|
| 602 |
break;
|
| 603 |
val += n * (*q - '0');
|
| 604 |
} |
| 605 |
t += val; |
| 606 |
} |
| 607 |
*timeval = negative ? -t : t; |
| 608 |
return 0; |
| 609 |
} |
| 610 |
|
| 611 |
#ifdef TEST
|
| 612 |
|
| 613 |
#undef printf
|
| 614 |
|
| 615 |
int main(void) |
| 616 |
{
|
| 617 |
printf("Testing av_parse_video_rate()\n");
|
| 618 |
{
|
| 619 |
int i;
|
| 620 |
const char *rates[] = { |
| 621 |
"-inf",
|
| 622 |
"inf",
|
| 623 |
"nan",
|
| 624 |
"123/0",
|
| 625 |
"-123 / 0",
|
| 626 |
"",
|
| 627 |
"/",
|
| 628 |
" 123 / 321",
|
| 629 |
"foo/foo",
|
| 630 |
"foo/1",
|
| 631 |
"1/foo",
|
| 632 |
"0/0",
|
| 633 |
"/0",
|
| 634 |
"1/",
|
| 635 |
"1",
|
| 636 |
"0",
|
| 637 |
"-123/123",
|
| 638 |
"-foo",
|
| 639 |
"123.23",
|
| 640 |
".23",
|
| 641 |
"-.23",
|
| 642 |
"-0.234",
|
| 643 |
"-0.0000001",
|
| 644 |
" 21332.2324 ",
|
| 645 |
" -21332.2324 ",
|
| 646 |
}; |
| 647 |
|
| 648 |
for (i = 0; i < FF_ARRAY_ELEMS(rates); i++) { |
| 649 |
int ret;
|
| 650 |
AVRational q = (AVRational){0, 0};
|
| 651 |
ret = av_parse_video_rate(&q, rates[i]), |
| 652 |
printf("'%s' -> %d/%d ret:%d\n",
|
| 653 |
rates[i], q.num, q.den, ret); |
| 654 |
} |
| 655 |
} |
| 656 |
|
| 657 |
printf("\nTesting av_parse_color()\n");
|
| 658 |
{
|
| 659 |
int i;
|
| 660 |
uint8_t rgba[4];
|
| 661 |
const char *color_names[] = { |
| 662 |
"bikeshed",
|
| 663 |
"RaNdOm",
|
| 664 |
"foo",
|
| 665 |
"red",
|
| 666 |
"Red ",
|
| 667 |
"RED",
|
| 668 |
"Violet",
|
| 669 |
"Yellow",
|
| 670 |
"Red",
|
| 671 |
"0x000000",
|
| 672 |
"0x0000000",
|
| 673 |
"0xff000000",
|
| 674 |
"0x3e34ff",
|
| 675 |
"0x3e34ffaa",
|
| 676 |
"0xffXXee",
|
| 677 |
"0xfoobar",
|
| 678 |
"0xffffeeeeeeee",
|
| 679 |
"#ff0000",
|
| 680 |
"#ffXX00",
|
| 681 |
"ff0000",
|
| 682 |
"ffXX00",
|
| 683 |
"red@foo",
|
| 684 |
"random@10",
|
| 685 |
"0xff0000@1.0",
|
| 686 |
"red@",
|
| 687 |
"red@0xfff",
|
| 688 |
"red@0xf",
|
| 689 |
"red@2",
|
| 690 |
"red@0.1",
|
| 691 |
"red@-1",
|
| 692 |
"red@0.5",
|
| 693 |
"red@1.0",
|
| 694 |
"red@256",
|
| 695 |
"red@10foo",
|
| 696 |
"red@-1.0",
|
| 697 |
"red@-0.0",
|
| 698 |
}; |
| 699 |
|
| 700 |
av_log_set_level(AV_LOG_DEBUG); |
| 701 |
|
| 702 |
for (i = 0; i < FF_ARRAY_ELEMS(color_names); i++) { |
| 703 |
if (av_parse_color(rgba, color_names[i], -1, NULL) >= 0) |
| 704 |
printf("%s -> R(%d) G(%d) B(%d) A(%d)\n", color_names[i], rgba[0], rgba[1], rgba[2], rgba[3]); |
| 705 |
} |
| 706 |
} |
| 707 |
|
| 708 |
return 0; |
| 709 |
} |
| 710 |
|
| 711 |
#endif /* TEST */ |