2 * copyright (c) 2009 Stefano Sabatini
3 * This file is part of FFmpeg.
5 * FFmpeg is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
10 * FFmpeg is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with FFmpeg; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 * @file libavfilter/parseutils.c
26 #include "libavutil/avutil.h"
27 #include "libavutil/random_seed.h"
28 #include "parseutils.h"
30 #define WHITESPACES " \n\t"
32 char *av_get_token(const char **buf, const char *term)
34 char *out = av_malloc(strlen(*buf) + 1);
35 char *ret= out, *end= out;
37 p += strspn(p, WHITESPACES);
39 while(*p && !strspn(p, term)) {
45 while(*p && *p != '\'')
58 }while(out >= end && strspn(out, WHITESPACES));
66 const char *name; ///< a string representing the name of the color
67 uint8_t rgba_color[4]; ///< RGBA values for the color
70 static ColorEntry color_table[] = {
71 { "AliceBlue", { 0xF0, 0xF8, 0xFF } },
72 { "AntiqueWhite", { 0xFA, 0xEB, 0xD7 } },
73 { "Aqua", { 0x00, 0xFF, 0xFF } },
74 { "Aquamarine", { 0x7F, 0xFF, 0xD4 } },
75 { "Azure", { 0xF0, 0xFF, 0xFF } },
76 { "Beige", { 0xF5, 0xF5, 0xDC } },
77 { "Bisque", { 0xFF, 0xE4, 0xC4 } },
78 { "Black", { 0x00, 0x00, 0x00 } },
79 { "BlanchedAlmond", { 0xFF, 0xEB, 0xCD } },
80 { "Blue", { 0x00, 0x00, 0xFF } },
81 { "BlueViolet", { 0x8A, 0x2B, 0xE2 } },
82 { "Brown", { 0xA5, 0x2A, 0x2A } },
83 { "BurlyWood", { 0xDE, 0xB8, 0x87 } },
84 { "CadetBlue", { 0x5F, 0x9E, 0xA0 } },
85 { "Chartreuse", { 0x7F, 0xFF, 0x00 } },
86 { "Chocolate", { 0xD2, 0x69, 0x1E } },
87 { "Coral", { 0xFF, 0x7F, 0x50 } },
88 { "CornflowerBlue", { 0x64, 0x95, 0xED } },
89 { "Cornsilk", { 0xFF, 0xF8, 0xDC } },
90 { "Crimson", { 0xDC, 0x14, 0x3C } },
91 { "Cyan", { 0x00, 0xFF, 0xFF } },
92 { "DarkBlue", { 0x00, 0x00, 0x8B } },
93 { "DarkCyan", { 0x00, 0x8B, 0x8B } },
94 { "DarkGoldenRod", { 0xB8, 0x86, 0x0B } },
95 { "DarkGray", { 0xA9, 0xA9, 0xA9 } },
96 { "DarkGreen", { 0x00, 0x64, 0x00 } },
97 { "DarkKhaki", { 0xBD, 0xB7, 0x6B } },
98 { "DarkMagenta", { 0x8B, 0x00, 0x8B } },
99 { "DarkOliveGreen", { 0x55, 0x6B, 0x2F } },
100 { "Darkorange", { 0xFF, 0x8C, 0x00 } },
101 { "DarkOrchid", { 0x99, 0x32, 0xCC } },
102 { "DarkRed", { 0x8B, 0x00, 0x00 } },
103 { "DarkSalmon", { 0xE9, 0x96, 0x7A } },
104 { "DarkSeaGreen", { 0x8F, 0xBC, 0x8F } },
105 { "DarkSlateBlue", { 0x48, 0x3D, 0x8B } },
106 { "DarkSlateGray", { 0x2F, 0x4F, 0x4F } },
107 { "DarkTurquoise", { 0x00, 0xCE, 0xD1 } },
108 { "DarkViolet", { 0x94, 0x00, 0xD3 } },
109 { "DeepPink", { 0xFF, 0x14, 0x93 } },
110 { "DeepSkyBlue", { 0x00, 0xBF, 0xFF } },
111 { "DimGray", { 0x69, 0x69, 0x69 } },
112 { "DodgerBlue", { 0x1E, 0x90, 0xFF } },
113 { "FireBrick", { 0xB2, 0x22, 0x22 } },
114 { "FloralWhite", { 0xFF, 0xFA, 0xF0 } },
115 { "ForestGreen", { 0x22, 0x8B, 0x22 } },
116 { "Fuchsia", { 0xFF, 0x00, 0xFF } },
117 { "Gainsboro", { 0xDC, 0xDC, 0xDC } },
118 { "GhostWhite", { 0xF8, 0xF8, 0xFF } },
119 { "Gold", { 0xFF, 0xD7, 0x00 } },
120 { "GoldenRod", { 0xDA, 0xA5, 0x20 } },
121 { "Gray", { 0x80, 0x80, 0x80 } },
122 { "Green", { 0x00, 0x80, 0x00 } },
123 { "GreenYellow", { 0xAD, 0xFF, 0x2F } },
124 { "HoneyDew", { 0xF0, 0xFF, 0xF0 } },
125 { "HotPink", { 0xFF, 0x69, 0xB4 } },
126 { "IndianRed", { 0xCD, 0x5C, 0x5C } },
127 { "Indigo", { 0x4B, 0x00, 0x82 } },
128 { "Ivory", { 0xFF, 0xFF, 0xF0 } },
129 { "Khaki", { 0xF0, 0xE6, 0x8C } },
130 { "Lavender", { 0xE6, 0xE6, 0xFA } },
131 { "LavenderBlush", { 0xFF, 0xF0, 0xF5 } },
132 { "LawnGreen", { 0x7C, 0xFC, 0x00 } },
133 { "LemonChiffon", { 0xFF, 0xFA, 0xCD } },
134 { "LightBlue", { 0xAD, 0xD8, 0xE6 } },
135 { "LightCoral", { 0xF0, 0x80, 0x80 } },
136 { "LightCyan", { 0xE0, 0xFF, 0xFF } },
137 { "LightGoldenRodYellow", { 0xFA, 0xFA, 0xD2 } },
138 { "LightGrey", { 0xD3, 0xD3, 0xD3 } },
139 { "LightGreen", { 0x90, 0xEE, 0x90 } },
140 { "LightPink", { 0xFF, 0xB6, 0xC1 } },
141 { "LightSalmon", { 0xFF, 0xA0, 0x7A } },
142 { "LightSeaGreen", { 0x20, 0xB2, 0xAA } },
143 { "LightSkyBlue", { 0x87, 0xCE, 0xFA } },
144 { "LightSlateGray", { 0x77, 0x88, 0x99 } },
145 { "LightSteelBlue", { 0xB0, 0xC4, 0xDE } },
146 { "LightYellow", { 0xFF, 0xFF, 0xE0 } },
147 { "Lime", { 0x00, 0xFF, 0x00 } },
148 { "LimeGreen", { 0x32, 0xCD, 0x32 } },
149 { "Linen", { 0xFA, 0xF0, 0xE6 } },
150 { "Magenta", { 0xFF, 0x00, 0xFF } },
151 { "Maroon", { 0x80, 0x00, 0x00 } },
152 { "MediumAquaMarine", { 0x66, 0xCD, 0xAA } },
153 { "MediumBlue", { 0x00, 0x00, 0xCD } },
154 { "MediumOrchid", { 0xBA, 0x55, 0xD3 } },
155 { "MediumPurple", { 0x93, 0x70, 0xD8 } },
156 { "MediumSeaGreen", { 0x3C, 0xB3, 0x71 } },
157 { "MediumSlateBlue", { 0x7B, 0x68, 0xEE } },
158 { "MediumSpringGreen", { 0x00, 0xFA, 0x9A } },
159 { "MediumTurquoise", { 0x48, 0xD1, 0xCC } },
160 { "MediumVioletRed", { 0xC7, 0x15, 0x85 } },
161 { "MidnightBlue", { 0x19, 0x19, 0x70 } },
162 { "MintCream", { 0xF5, 0xFF, 0xFA } },
163 { "MistyRose", { 0xFF, 0xE4, 0xE1 } },
164 { "Moccasin", { 0xFF, 0xE4, 0xB5 } },
165 { "NavajoWhite", { 0xFF, 0xDE, 0xAD } },
166 { "Navy", { 0x00, 0x00, 0x80 } },
167 { "OldLace", { 0xFD, 0xF5, 0xE6 } },
168 { "Olive", { 0x80, 0x80, 0x00 } },
169 { "OliveDrab", { 0x6B, 0x8E, 0x23 } },
170 { "Orange", { 0xFF, 0xA5, 0x00 } },
171 { "OrangeRed", { 0xFF, 0x45, 0x00 } },
172 { "Orchid", { 0xDA, 0x70, 0xD6 } },
173 { "PaleGoldenRod", { 0xEE, 0xE8, 0xAA } },
174 { "PaleGreen", { 0x98, 0xFB, 0x98 } },
175 { "PaleTurquoise", { 0xAF, 0xEE, 0xEE } },
176 { "PaleVioletRed", { 0xD8, 0x70, 0x93 } },
177 { "PapayaWhip", { 0xFF, 0xEF, 0xD5 } },
178 { "PeachPuff", { 0xFF, 0xDA, 0xB9 } },
179 { "Peru", { 0xCD, 0x85, 0x3F } },
180 { "Pink", { 0xFF, 0xC0, 0xCB } },
181 { "Plum", { 0xDD, 0xA0, 0xDD } },
182 { "PowderBlue", { 0xB0, 0xE0, 0xE6 } },
183 { "Purple", { 0x80, 0x00, 0x80 } },
184 { "Red", { 0xFF, 0x00, 0x00 } },
185 { "RosyBrown", { 0xBC, 0x8F, 0x8F } },
186 { "RoyalBlue", { 0x41, 0x69, 0xE1 } },
187 { "SaddleBrown", { 0x8B, 0x45, 0x13 } },
188 { "Salmon", { 0xFA, 0x80, 0x72 } },
189 { "SandyBrown", { 0xF4, 0xA4, 0x60 } },
190 { "SeaGreen", { 0x2E, 0x8B, 0x57 } },
191 { "SeaShell", { 0xFF, 0xF5, 0xEE } },
192 { "Sienna", { 0xA0, 0x52, 0x2D } },
193 { "Silver", { 0xC0, 0xC0, 0xC0 } },
194 { "SkyBlue", { 0x87, 0xCE, 0xEB } },
195 { "SlateBlue", { 0x6A, 0x5A, 0xCD } },
196 { "SlateGray", { 0x70, 0x80, 0x90 } },
197 { "Snow", { 0xFF, 0xFA, 0xFA } },
198 { "SpringGreen", { 0x00, 0xFF, 0x7F } },
199 { "SteelBlue", { 0x46, 0x82, 0xB4 } },
200 { "Tan", { 0xD2, 0xB4, 0x8C } },
201 { "Teal", { 0x00, 0x80, 0x80 } },
202 { "Thistle", { 0xD8, 0xBF, 0xD8 } },
203 { "Tomato", { 0xFF, 0x63, 0x47 } },
204 { "Turquoise", { 0x40, 0xE0, 0xD0 } },
205 { "Violet", { 0xEE, 0x82, 0xEE } },
206 { "Wheat", { 0xF5, 0xDE, 0xB3 } },
207 { "White", { 0xFF, 0xFF, 0xFF } },
208 { "WhiteSmoke", { 0xF5, 0xF5, 0xF5 } },
209 { "Yellow", { 0xFF, 0xFF, 0x00 } },
210 { "YellowGreen", { 0x9A, 0xCD, 0x32 } },
213 static int color_table_compare(const void *lhs, const void *rhs)
215 return strcasecmp(lhs, ((const ColorEntry *)rhs)->name);
218 int av_parse_color(uint8_t *rgba_color, const char *color_string, void *log_ctx)
220 if (!strcasecmp(color_string, "random") || !strcasecmp(color_string, "bikeshed")) {
221 int rgba = ff_random_get_seed();
222 rgba_color[0] = rgba >> 24;
223 rgba_color[1] = rgba >> 16;
224 rgba_color[2] = rgba >> 8;
225 rgba_color[3] = rgba;
227 if (!strncmp(color_string, "0x", 2)) {
229 int len = strlen(color_string);
230 unsigned int rgba = strtoul(color_string, &tail, 16);
232 if (*tail || (len != 8 && len != 10)) {
233 av_log(log_ctx, AV_LOG_ERROR, "Invalid 0xRRGGBB[AA] color string: '%s'\n", color_string);
237 rgba_color[3] = rgba;
240 rgba_color[0] = rgba >> 16;
241 rgba_color[1] = rgba >> 8;
242 rgba_color[2] = rgba;
244 const ColorEntry *entry = bsearch(color_string,
246 FF_ARRAY_ELEMS(color_table),
248 color_table_compare);
250 av_log(log_ctx, AV_LOG_ERROR, "Cannot find color '%s'\n", color_string);
253 memcpy(rgba_color, entry->rgba_color, 4);
260 * Stores the value in the field in ctx that is named like key.
261 * ctx must be an AVClass context, storing is done using AVOptions.
263 * @param buf the string to parse, buf will be updated to point at the
264 * separator just after the parsed key/value pair
265 * @param key_val_sep a 0-terminated list of characters used to
266 * separate key from value
267 * @param pairs_sep a 0-terminated list of characters used to separate
268 * two pairs from each other
269 * @return 0 if the key/value pair has been successfully parsed and
270 * set, or a negative value corresponding to an AVERROR code in case
272 * AVERROR(EINVAL) if the key/value pair cannot be parsed,
273 * the error code issued by av_set_string3() if the key/value pair
276 static int parse_key_value_pair(void *ctx, const char **buf,
277 const char *key_val_sep, const char *pairs_sep)
279 char *key = av_get_token(buf, key_val_sep);
283 if (*key && strspn(*buf, key_val_sep)) {
285 val = av_get_token(buf, pairs_sep);
287 av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
289 return AVERROR(EINVAL);
292 av_log(ctx, AV_LOG_DEBUG, "Setting value '%s' for key '%s'\n", val, key);
294 ret = av_set_string3(ctx, key, val, 1, NULL);
295 if (ret == AVERROR(ENOENT))
296 av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
303 int av_set_options_string(void *ctx, const char *opts,
304 const char *key_val_sep, const char *pairs_sep)
309 if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
324 typedef struct TestContext
326 const AVClass *class;
334 #define OFFSET(x) offsetof(TestContext, x)
336 #define TEST_FLAG_COOL 01
337 #define TEST_FLAG_LAME 02
338 #define TEST_FLAG_MU 04
340 static const AVOption test_options[]= {
341 {"num", "set num", OFFSET(num), FF_OPT_TYPE_INT, 0, 0, 100 },
342 {"toggle", "set toggle", OFFSET(toggle), FF_OPT_TYPE_INT, 0, 0, 1 },
343 {"rational", "set rational", OFFSET(rational), FF_OPT_TYPE_RATIONAL, 0, 0, 10 },
344 {"string", "set string", OFFSET(string), FF_OPT_TYPE_STRING, 0, CHAR_MIN, CHAR_MAX },
345 {"flags", "set flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, 0, 0, INT_MAX, 0, "flags" },
346 {"cool", "set cool flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_COOL, INT_MIN, INT_MAX, 0, "flags" },
347 {"lame", "set lame flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_LAME, INT_MIN, INT_MAX, 0, "flags" },
348 {"mu", "set mu flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_MU, INT_MIN, INT_MAX, 0, "flags" },
352 static const char *test_get_name(void *ctx)
357 static const AVClass test_class = {
367 const char *strings[] = {
382 "'foo : ' :blahblah",
388 " foo bar : blahblah",
390 "'foo : \\ \\ ' : blahblah",
391 "'\\fo\\o:': blahblah",
392 "\\'fo\\o\\:': foo ' :blahblah"
395 for (i=0; i < FF_ARRAY_ELEMS(strings); i++) {
396 const char *p= strings[i];
398 printf(" -> |%s|", av_get_token(&p, ":"));
399 printf(" + |%s|\n", p);
402 printf("\nTesting av_parse_color()\n");
405 const char *color_names[] = {
425 av_log_set_level(AV_LOG_DEBUG);
427 for (int i = 0; i < FF_ARRAY_ELEMS(color_names); i++) {
428 if (av_parse_color(rgba, color_names[i], NULL) >= 0)
429 printf("%s -> R(%d) G(%d) B(%d) A(%d)\n", color_names[i], rgba[0], rgba[1], rgba[2], rgba[3]);
433 printf("\nTesting av_set_options_string()\n");
435 TestContext test_ctx;
436 const char *options[] = {
452 "flags=+mu-lame : num=42: toggle=0",
453 "num=42 : string=blahblah",
454 "rational=0 : rational=1/2 : rational=1/-1",
458 test_ctx.class = &test_class;
459 av_opt_set_defaults2(&test_ctx, 0, 0);
460 test_ctx.string = av_strdup("default");
462 av_log_set_level(AV_LOG_DEBUG);
464 for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
465 av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
466 if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)
467 av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);