* parsing utils
*/
-#include <string.h>
+#include <strings.h>
#include "libavutil/avutil.h"
+#include "libavutil/random_seed.h"
#include "parseutils.h"
#define WHITESPACES " \n\t"
return ret;
}
+typedef struct {
+ const char *name; ///< a string representing the name of the color
+ uint8_t rgba_color[4]; ///< RGBA values for the color
+} ColorEntry;
+
+static ColorEntry color_table[] = {
+ { "AliceBlue", { 0xF0, 0xF8, 0xFF } },
+ { "AntiqueWhite", { 0xFA, 0xEB, 0xD7 } },
+ { "Aqua", { 0x00, 0xFF, 0xFF } },
+ { "Aquamarine", { 0x7F, 0xFF, 0xD4 } },
+ { "Azure", { 0xF0, 0xFF, 0xFF } },
+ { "Beige", { 0xF5, 0xF5, 0xDC } },
+ { "Bisque", { 0xFF, 0xE4, 0xC4 } },
+ { "Black", { 0x00, 0x00, 0x00 } },
+ { "BlanchedAlmond", { 0xFF, 0xEB, 0xCD } },
+ { "Blue", { 0x00, 0x00, 0xFF } },
+ { "BlueViolet", { 0x8A, 0x2B, 0xE2 } },
+ { "Brown", { 0xA5, 0x2A, 0x2A } },
+ { "BurlyWood", { 0xDE, 0xB8, 0x87 } },
+ { "CadetBlue", { 0x5F, 0x9E, 0xA0 } },
+ { "Chartreuse", { 0x7F, 0xFF, 0x00 } },
+ { "Chocolate", { 0xD2, 0x69, 0x1E } },
+ { "Coral", { 0xFF, 0x7F, 0x50 } },
+ { "CornflowerBlue", { 0x64, 0x95, 0xED } },
+ { "Cornsilk", { 0xFF, 0xF8, 0xDC } },
+ { "Crimson", { 0xDC, 0x14, 0x3C } },
+ { "Cyan", { 0x00, 0xFF, 0xFF } },
+ { "DarkBlue", { 0x00, 0x00, 0x8B } },
+ { "DarkCyan", { 0x00, 0x8B, 0x8B } },
+ { "DarkGoldenRod", { 0xB8, 0x86, 0x0B } },
+ { "DarkGray", { 0xA9, 0xA9, 0xA9 } },
+ { "DarkGreen", { 0x00, 0x64, 0x00 } },
+ { "DarkKhaki", { 0xBD, 0xB7, 0x6B } },
+ { "DarkMagenta", { 0x8B, 0x00, 0x8B } },
+ { "DarkOliveGreen", { 0x55, 0x6B, 0x2F } },
+ { "Darkorange", { 0xFF, 0x8C, 0x00 } },
+ { "DarkOrchid", { 0x99, 0x32, 0xCC } },
+ { "DarkRed", { 0x8B, 0x00, 0x00 } },
+ { "DarkSalmon", { 0xE9, 0x96, 0x7A } },
+ { "DarkSeaGreen", { 0x8F, 0xBC, 0x8F } },
+ { "DarkSlateBlue", { 0x48, 0x3D, 0x8B } },
+ { "DarkSlateGray", { 0x2F, 0x4F, 0x4F } },
+ { "DarkTurquoise", { 0x00, 0xCE, 0xD1 } },
+ { "DarkViolet", { 0x94, 0x00, 0xD3 } },
+ { "DeepPink", { 0xFF, 0x14, 0x93 } },
+ { "DeepSkyBlue", { 0x00, 0xBF, 0xFF } },
+ { "DimGray", { 0x69, 0x69, 0x69 } },
+ { "DodgerBlue", { 0x1E, 0x90, 0xFF } },
+ { "FireBrick", { 0xB2, 0x22, 0x22 } },
+ { "FloralWhite", { 0xFF, 0xFA, 0xF0 } },
+ { "ForestGreen", { 0x22, 0x8B, 0x22 } },
+ { "Fuchsia", { 0xFF, 0x00, 0xFF } },
+ { "Gainsboro", { 0xDC, 0xDC, 0xDC } },
+ { "GhostWhite", { 0xF8, 0xF8, 0xFF } },
+ { "Gold", { 0xFF, 0xD7, 0x00 } },
+ { "GoldenRod", { 0xDA, 0xA5, 0x20 } },
+ { "Gray", { 0x80, 0x80, 0x80 } },
+ { "Green", { 0x00, 0x80, 0x00 } },
+ { "GreenYellow", { 0xAD, 0xFF, 0x2F } },
+ { "HoneyDew", { 0xF0, 0xFF, 0xF0 } },
+ { "HotPink", { 0xFF, 0x69, 0xB4 } },
+ { "IndianRed", { 0xCD, 0x5C, 0x5C } },
+ { "Indigo", { 0x4B, 0x00, 0x82 } },
+ { "Ivory", { 0xFF, 0xFF, 0xF0 } },
+ { "Khaki", { 0xF0, 0xE6, 0x8C } },
+ { "Lavender", { 0xE6, 0xE6, 0xFA } },
+ { "LavenderBlush", { 0xFF, 0xF0, 0xF5 } },
+ { "LawnGreen", { 0x7C, 0xFC, 0x00 } },
+ { "LemonChiffon", { 0xFF, 0xFA, 0xCD } },
+ { "LightBlue", { 0xAD, 0xD8, 0xE6 } },
+ { "LightCoral", { 0xF0, 0x80, 0x80 } },
+ { "LightCyan", { 0xE0, 0xFF, 0xFF } },
+ { "LightGoldenRodYellow", { 0xFA, 0xFA, 0xD2 } },
+ { "LightGrey", { 0xD3, 0xD3, 0xD3 } },
+ { "LightGreen", { 0x90, 0xEE, 0x90 } },
+ { "LightPink", { 0xFF, 0xB6, 0xC1 } },
+ { "LightSalmon", { 0xFF, 0xA0, 0x7A } },
+ { "LightSeaGreen", { 0x20, 0xB2, 0xAA } },
+ { "LightSkyBlue", { 0x87, 0xCE, 0xFA } },
+ { "LightSlateGray", { 0x77, 0x88, 0x99 } },
+ { "LightSteelBlue", { 0xB0, 0xC4, 0xDE } },
+ { "LightYellow", { 0xFF, 0xFF, 0xE0 } },
+ { "Lime", { 0x00, 0xFF, 0x00 } },
+ { "LimeGreen", { 0x32, 0xCD, 0x32 } },
+ { "Linen", { 0xFA, 0xF0, 0xE6 } },
+ { "Magenta", { 0xFF, 0x00, 0xFF } },
+ { "Maroon", { 0x80, 0x00, 0x00 } },
+ { "MediumAquaMarine", { 0x66, 0xCD, 0xAA } },
+ { "MediumBlue", { 0x00, 0x00, 0xCD } },
+ { "MediumOrchid", { 0xBA, 0x55, 0xD3 } },
+ { "MediumPurple", { 0x93, 0x70, 0xD8 } },
+ { "MediumSeaGreen", { 0x3C, 0xB3, 0x71 } },
+ { "MediumSlateBlue", { 0x7B, 0x68, 0xEE } },
+ { "MediumSpringGreen", { 0x00, 0xFA, 0x9A } },
+ { "MediumTurquoise", { 0x48, 0xD1, 0xCC } },
+ { "MediumVioletRed", { 0xC7, 0x15, 0x85 } },
+ { "MidnightBlue", { 0x19, 0x19, 0x70 } },
+ { "MintCream", { 0xF5, 0xFF, 0xFA } },
+ { "MistyRose", { 0xFF, 0xE4, 0xE1 } },
+ { "Moccasin", { 0xFF, 0xE4, 0xB5 } },
+ { "NavajoWhite", { 0xFF, 0xDE, 0xAD } },
+ { "Navy", { 0x00, 0x00, 0x80 } },
+ { "OldLace", { 0xFD, 0xF5, 0xE6 } },
+ { "Olive", { 0x80, 0x80, 0x00 } },
+ { "OliveDrab", { 0x6B, 0x8E, 0x23 } },
+ { "Orange", { 0xFF, 0xA5, 0x00 } },
+ { "OrangeRed", { 0xFF, 0x45, 0x00 } },
+ { "Orchid", { 0xDA, 0x70, 0xD6 } },
+ { "PaleGoldenRod", { 0xEE, 0xE8, 0xAA } },
+ { "PaleGreen", { 0x98, 0xFB, 0x98 } },
+ { "PaleTurquoise", { 0xAF, 0xEE, 0xEE } },
+ { "PaleVioletRed", { 0xD8, 0x70, 0x93 } },
+ { "PapayaWhip", { 0xFF, 0xEF, 0xD5 } },
+ { "PeachPuff", { 0xFF, 0xDA, 0xB9 } },
+ { "Peru", { 0xCD, 0x85, 0x3F } },
+ { "Pink", { 0xFF, 0xC0, 0xCB } },
+ { "Plum", { 0xDD, 0xA0, 0xDD } },
+ { "PowderBlue", { 0xB0, 0xE0, 0xE6 } },
+ { "Purple", { 0x80, 0x00, 0x80 } },
+ { "Red", { 0xFF, 0x00, 0x00 } },
+ { "RosyBrown", { 0xBC, 0x8F, 0x8F } },
+ { "RoyalBlue", { 0x41, 0x69, 0xE1 } },
+ { "SaddleBrown", { 0x8B, 0x45, 0x13 } },
+ { "Salmon", { 0xFA, 0x80, 0x72 } },
+ { "SandyBrown", { 0xF4, 0xA4, 0x60 } },
+ { "SeaGreen", { 0x2E, 0x8B, 0x57 } },
+ { "SeaShell", { 0xFF, 0xF5, 0xEE } },
+ { "Sienna", { 0xA0, 0x52, 0x2D } },
+ { "Silver", { 0xC0, 0xC0, 0xC0 } },
+ { "SkyBlue", { 0x87, 0xCE, 0xEB } },
+ { "SlateBlue", { 0x6A, 0x5A, 0xCD } },
+ { "SlateGray", { 0x70, 0x80, 0x90 } },
+ { "Snow", { 0xFF, 0xFA, 0xFA } },
+ { "SpringGreen", { 0x00, 0xFF, 0x7F } },
+ { "SteelBlue", { 0x46, 0x82, 0xB4 } },
+ { "Tan", { 0xD2, 0xB4, 0x8C } },
+ { "Teal", { 0x00, 0x80, 0x80 } },
+ { "Thistle", { 0xD8, 0xBF, 0xD8 } },
+ { "Tomato", { 0xFF, 0x63, 0x47 } },
+ { "Turquoise", { 0x40, 0xE0, 0xD0 } },
+ { "Violet", { 0xEE, 0x82, 0xEE } },
+ { "Wheat", { 0xF5, 0xDE, 0xB3 } },
+ { "White", { 0xFF, 0xFF, 0xFF } },
+ { "WhiteSmoke", { 0xF5, 0xF5, 0xF5 } },
+ { "Yellow", { 0xFF, 0xFF, 0x00 } },
+ { "YellowGreen", { 0x9A, 0xCD, 0x32 } },
+};
+
+static int color_table_compare(const void *lhs, const void *rhs)
+{
+ return strcasecmp(lhs, ((const ColorEntry *)rhs)->name);
+}
+
+int av_parse_color(uint8_t *rgba_color, const char *color_string, void *log_ctx)
+{
+ if (!strcasecmp(color_string, "random") || !strcasecmp(color_string, "bikeshed")) {
+ int rgba = ff_random_get_seed();
+ rgba_color[0] = rgba >> 24;
+ rgba_color[1] = rgba >> 16;
+ rgba_color[2] = rgba >> 8;
+ rgba_color[3] = rgba;
+ } else
+ if (!strncmp(color_string, "0x", 2)) {
+ char *tail;
+ int len = strlen(color_string);
+ int rgba = strtol(color_string, &tail, 16);
+
+ if (*tail || (len != 8 && len != 10)) {
+ av_log(log_ctx, AV_LOG_ERROR, "Invalid 0xRRGGBB[AA] color string: '%s'\n", color_string);
+ return -1;
+ }
+ if (len == 10) {
+ rgba_color[3] = rgba;
+ rgba >>= 8;
+ }
+ rgba_color[0] = rgba >> 16;
+ rgba_color[1] = rgba >> 8;
+ rgba_color[2] = rgba;
+ } else {
+ const ColorEntry *entry = bsearch(color_string,
+ 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_string);
+ return -1;
+ }
+ memcpy(rgba_color, entry->rgba_color, 4);
+ }
+
+ return 0;
+}
+
+/**
+ * Stores the value in the field in ctx that is named like key.
+ * ctx must be an AVClass context, storing is done using AVOptions.
+ *
+ * @param buf the string to parse, buf will be updated to point at the
+ * separator just after the parsed key/value pair
+ * @param key_val_sep a 0-terminated list of characters used to
+ * separate key from value
+ * @param pairs_sep a 0-terminated list of characters used to separate
+ * two pairs from each other
+ * @return 0 if the key/value pair has been successfully parsed and
+ * set, or a negative value corresponding to an AVERROR code in case
+ * of error:
+ * AVERROR(EINVAL) if the key/value pair cannot be parsed,
+ * the error code issued by av_set_string3() if the key/value pair
+ * cannot be set
+ */
+static int parse_key_value_pair(void *ctx, const char **buf,
+ const char *key_val_sep, const char *pairs_sep)
+{
+ char *key = av_get_token(buf, key_val_sep);
+ char *val;
+ int ret;
+
+ if (*key && strspn(*buf, key_val_sep)) {
+ (*buf)++;
+ val = av_get_token(buf, pairs_sep);
+ } else {
+ av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
+ av_free(key);
+ return AVERROR(EINVAL);
+ }
+
+ av_log(ctx, AV_LOG_DEBUG, "Setting value '%s' for key '%s'\n", val, key);
+
+ ret = av_set_string3(ctx, key, val, 1, NULL);
+
+ av_free(key);
+ av_free(val);
+ return ret;
+}
+
+int av_set_options_string(void *ctx, const char *opts,
+ const char *key_val_sep, const char *pairs_sep)
+{
+ int ret, count = 0;
+
+ while (*opts) {
+ if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
+ return ret;
+ count++;
+
+ if (*opts)
+ opts++;
+ }
+
+ return count;
+}
+
#ifdef TEST
#undef printf
-int main()
+typedef struct TestContext
+{
+ const AVClass *class;
+ int num;
+ int toggle;
+ char *string;
+ int flags;
+ AVRational rational;
+} TestContext;
+
+#define OFFSET(x) offsetof(TestContext, x)
+
+#define TEST_FLAG_COOL 01
+#define TEST_FLAG_LAME 02
+#define TEST_FLAG_MU 04
+
+static const AVOption test_options[]= {
+{"num", "set num", OFFSET(num), FF_OPT_TYPE_INT, 0, 0, 100 },
+{"toggle", "set toggle", OFFSET(toggle), FF_OPT_TYPE_INT, 0, 0, 1 },
+{"rational", "set rational", OFFSET(rational), FF_OPT_TYPE_RATIONAL, 0, 0, 10 },
+{"string", "set string", OFFSET(string), FF_OPT_TYPE_STRING, 0, CHAR_MIN, CHAR_MAX },
+{"flags", "set flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, 0, 0, INT_MAX, 0, "flags" },
+{"cool", "set cool flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_COOL, INT_MIN, INT_MAX, 0, "flags" },
+{"lame", "set lame flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_LAME, INT_MIN, INT_MAX, 0, "flags" },
+{"mu", "set mu flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_MU, INT_MIN, INT_MAX, 0, "flags" },
+{NULL},
+};
+
+static const char *test_get_name(void *ctx)
+{
+ return "test";
+}
+
+static const AVClass test_class = {
+ "TestContext",
+ test_get_name,
+ test_options
+};
+
+int main(void)
{
int i;
printf(" + |%s|\n", p);
}
+ printf("\nTesting av_parse_color()\n");
+ {
+ uint8_t rgba[4];
+ const char *color_names[] = {
+ "bikeshed",
+ "RaNdOm",
+ "foo",
+ "red",
+ "Red ",
+ "RED",
+ "Violet",
+ "Yellow",
+ "Red",
+ "0x000000",
+ "0x0000000",
+ "0x3e34ff",
+ "0x3e34ffaa",
+ "0xffXXee",
+ "0xfoobar",
+ "0xffffeeeeeeee",
+ };
+
+ av_log_set_level(AV_LOG_DEBUG);
+
+ for (int i = 0; i < FF_ARRAY_ELEMS(color_names); i++) {
+ if (av_parse_color(rgba, color_names[i], NULL) >= 0)
+ printf("%s -> R(%d) G(%d) B(%d) A(%d)\n", color_names[i], rgba[0], rgba[1], rgba[2], rgba[3]);
+ }
+ }
+
+ printf("\nTesting av_set_options_string()\n");
+ {
+ TestContext test_ctx;
+ const char *options[] = {
+ "",
+ ":",
+ "=",
+ "foo=:",
+ ":=foo",
+ "=foo",
+ "foo=",
+ "foo",
+ "foo=val",
+ "foo==val",
+ "toggle=:",
+ "string=:",
+ "toggle=1 : foo",
+ "toggle=100",
+ "toggle==1",
+ "flags=+mu-lame : num=42: toggle=0",
+ "num=42 : string=blahblah",
+ "rational=0 : rational=1/2 : rational=1/-1",
+ "rational=-1/0",
+ };
+
+ test_ctx.class = &test_class;
+ av_opt_set_defaults2(&test_ctx, 0, 0);
+ test_ctx.string = av_strdup("default");
+
+ av_log_set_level(AV_LOG_DEBUG);
+
+ for (i=0; i < FF_ARRAY_ELEMS(options); i++) {
+ av_log(&test_ctx, AV_LOG_DEBUG, "Setting options string '%s'\n", options[i]);
+ if (av_set_options_string(&test_ctx, options[i], "=", ":") < 0)
+ av_log(&test_ctx, AV_LOG_ERROR, "Error setting options string: '%s'\n", options[i]);
+ printf("\n");
+ }
+ }
+
return 0;
}
projects / ffmpeg / blobdiff