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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
- * misc parsing utilities for libavcore
- */
- #include <strings.h>
- #include "parseutils.h"
- #include "libavutil/avutil.h"
- #include "libavutil/eval.h"
- #include "libavutil/avstring.h"
- #include "libavutil/random_seed.h"
- typedef struct {
- const char *abbr;
- int width, height;
- } VideoSizeAbbr;
- typedef struct {
- const char *abbr;
- AVRational rate;
- } VideoRateAbbr;
- static const VideoSizeAbbr video_size_abbrs[] = {
- { "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 },
- };
- static const VideoRateAbbr video_rate_abbrs[]= {
- { "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 } },
- };
- int av_parse_video_size(int *width_ptr, int *height_ptr, const char *str)
- {
- int i;
- int n = FF_ARRAY_ELEMS(video_size_abbrs);
- char *p;
- int width = 0, height = 0;
- for (i = 0; i < n; i++) {
- if (!strcmp(video_size_abbrs[i].abbr, str)) {
- width = video_size_abbrs[i].width;
- height = video_size_abbrs[i].height;
- break;
- }
- }
- if (i == n) {
- p = str;
- width = strtol(p, &p, 10);
- if (*p)
- p++;
- height = strtol(p, &p, 10);
- }
- if (width <= 0 || height <= 0)
- return AVERROR(EINVAL);
- *width_ptr = width;
- *height_ptr = height;
- return 0;
- }
- int av_parse_video_rate(AVRational *rate, const char *arg)
- {
- int i, ret;
- int n = FF_ARRAY_ELEMS(video_rate_abbrs);
- double res;
- /* First, we check our abbreviation table */
- for (i = 0; i < n; ++i)
- if (!strcmp(video_rate_abbrs[i].abbr, arg)) {
- *rate = video_rate_abbrs[i].rate;
- return 0;
- }
- /* Then, we try to parse it as fraction */
- if ((ret = av_expr_parse_and_eval(&res, arg, NULL, NULL, NULL, NULL, NULL, NULL,
- NULL, 0, NULL)) < 0)
- return ret;
- *rate = av_d2q(res, 1001000);
- if (rate->num <= 0 || rate->den <= 0)
- return AVERROR(EINVAL);
- return 0;
- }
- typedef struct {
- const char *name; ///< a string representing the name of the color
- uint8_t rgb_color[3]; ///< RGB 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);
- }
- #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;
- if (!strcasecmp(color_string2, "random") || !strcasecmp(color_string2, "bikeshed")) {
- 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) {
- unsigned long int alpha;
- const char *alpha_string = tail;
- if (!strncmp(alpha_string, "0x", 2)) {
- alpha = strtoul(alpha_string, &tail, 16);
- } else {
- alpha = 255 * strtod(alpha_string, &tail);
- }
- if (tail == alpha_string || *tail || alpha > 255) {
- 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;
- }
- #ifdef TEST
- #undef printf
- int main(void)
- {
- printf("Testing av_parse_video_rate()\n");
- {
- int i;
- const char *rates[] = {
- "-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;
- AVRational q = (AVRational){0, 0};
- ret = av_parse_video_rate(&q, rates[i]),
- printf("'%s' -> %d/%d ret:%d\n",
- rates[i], q.num, q.den, ret);
- }
- }
- printf("\nTesting av_parse_color()\n");
- {
- int i;
- uint8_t rgba[4];
- const char *color_names[] = {
- "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)
- printf("%s -> R(%d) G(%d) B(%d) A(%d)\n", color_names[i], rgba[0], rgba[1], rgba[2], rgba[3]);
- }
- }
- return 0;
- }
- #endif /* TEST */
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