mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-31 20:42:49 +08:00
522 lines
18 KiB
C
522 lines
18 KiB
C
/*
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* copyright (c) 2009 Stefano Sabatini
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* parsing utils
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*/
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#include <strings.h>
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#include "libavutil/avutil.h"
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#include "libavutil/avstring.h"
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#include "libavutil/random_seed.h"
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#include "parseutils.h"
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#define WHITESPACES " \n\t"
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char *av_get_token(const char **buf, const char *term)
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{
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char *out = av_malloc(strlen(*buf) + 1);
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char *ret= out, *end= out;
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const char *p = *buf;
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if (!out) return NULL;
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p += strspn(p, WHITESPACES);
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while(*p && !strspn(p, term)) {
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char c = *p++;
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if(c == '\\' && *p){
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*out++ = *p++;
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end= out;
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}else if(c == '\''){
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while(*p && *p != '\'')
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*out++ = *p++;
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if(*p){
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p++;
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end= out;
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}
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}else{
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*out++ = c;
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}
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}
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do{
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*out-- = 0;
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}while(out >= end && strspn(out, WHITESPACES));
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*buf = p;
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return ret;
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}
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typedef struct {
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const char *name; ///< a string representing the name of the color
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uint8_t rgb_color[3]; ///< RGB values for the color
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} ColorEntry;
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static ColorEntry color_table[] = {
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{ "AliceBlue", { 0xF0, 0xF8, 0xFF } },
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{ "AntiqueWhite", { 0xFA, 0xEB, 0xD7 } },
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{ "Aqua", { 0x00, 0xFF, 0xFF } },
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{ "Aquamarine", { 0x7F, 0xFF, 0xD4 } },
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{ "Azure", { 0xF0, 0xFF, 0xFF } },
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{ "Beige", { 0xF5, 0xF5, 0xDC } },
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{ "Bisque", { 0xFF, 0xE4, 0xC4 } },
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{ "Black", { 0x00, 0x00, 0x00 } },
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{ "BlanchedAlmond", { 0xFF, 0xEB, 0xCD } },
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{ "Blue", { 0x00, 0x00, 0xFF } },
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{ "BlueViolet", { 0x8A, 0x2B, 0xE2 } },
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{ "Brown", { 0xA5, 0x2A, 0x2A } },
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{ "BurlyWood", { 0xDE, 0xB8, 0x87 } },
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{ "CadetBlue", { 0x5F, 0x9E, 0xA0 } },
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{ "Chartreuse", { 0x7F, 0xFF, 0x00 } },
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{ "Chocolate", { 0xD2, 0x69, 0x1E } },
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{ "Coral", { 0xFF, 0x7F, 0x50 } },
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{ "CornflowerBlue", { 0x64, 0x95, 0xED } },
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{ "Cornsilk", { 0xFF, 0xF8, 0xDC } },
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{ "Crimson", { 0xDC, 0x14, 0x3C } },
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{ "Cyan", { 0x00, 0xFF, 0xFF } },
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{ "DarkBlue", { 0x00, 0x00, 0x8B } },
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{ "DarkCyan", { 0x00, 0x8B, 0x8B } },
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{ "DarkGoldenRod", { 0xB8, 0x86, 0x0B } },
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{ "DarkGray", { 0xA9, 0xA9, 0xA9 } },
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{ "DarkGreen", { 0x00, 0x64, 0x00 } },
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{ "DarkKhaki", { 0xBD, 0xB7, 0x6B } },
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{ "DarkMagenta", { 0x8B, 0x00, 0x8B } },
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{ "DarkOliveGreen", { 0x55, 0x6B, 0x2F } },
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{ "Darkorange", { 0xFF, 0x8C, 0x00 } },
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{ "DarkOrchid", { 0x99, 0x32, 0xCC } },
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{ "DarkRed", { 0x8B, 0x00, 0x00 } },
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{ "DarkSalmon", { 0xE9, 0x96, 0x7A } },
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{ "DarkSeaGreen", { 0x8F, 0xBC, 0x8F } },
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{ "DarkSlateBlue", { 0x48, 0x3D, 0x8B } },
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{ "DarkSlateGray", { 0x2F, 0x4F, 0x4F } },
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{ "DarkTurquoise", { 0x00, 0xCE, 0xD1 } },
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{ "DarkViolet", { 0x94, 0x00, 0xD3 } },
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{ "DeepPink", { 0xFF, 0x14, 0x93 } },
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{ "DeepSkyBlue", { 0x00, 0xBF, 0xFF } },
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{ "DimGray", { 0x69, 0x69, 0x69 } },
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{ "DodgerBlue", { 0x1E, 0x90, 0xFF } },
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{ "FireBrick", { 0xB2, 0x22, 0x22 } },
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{ "FloralWhite", { 0xFF, 0xFA, 0xF0 } },
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{ "ForestGreen", { 0x22, 0x8B, 0x22 } },
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{ "Fuchsia", { 0xFF, 0x00, 0xFF } },
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{ "Gainsboro", { 0xDC, 0xDC, 0xDC } },
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{ "GhostWhite", { 0xF8, 0xF8, 0xFF } },
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{ "Gold", { 0xFF, 0xD7, 0x00 } },
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{ "GoldenRod", { 0xDA, 0xA5, 0x20 } },
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{ "Gray", { 0x80, 0x80, 0x80 } },
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{ "Green", { 0x00, 0x80, 0x00 } },
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{ "GreenYellow", { 0xAD, 0xFF, 0x2F } },
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{ "HoneyDew", { 0xF0, 0xFF, 0xF0 } },
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{ "HotPink", { 0xFF, 0x69, 0xB4 } },
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{ "IndianRed", { 0xCD, 0x5C, 0x5C } },
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{ "Indigo", { 0x4B, 0x00, 0x82 } },
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{ "Ivory", { 0xFF, 0xFF, 0xF0 } },
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{ "Khaki", { 0xF0, 0xE6, 0x8C } },
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{ "Lavender", { 0xE6, 0xE6, 0xFA } },
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{ "LavenderBlush", { 0xFF, 0xF0, 0xF5 } },
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{ "LawnGreen", { 0x7C, 0xFC, 0x00 } },
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{ "LemonChiffon", { 0xFF, 0xFA, 0xCD } },
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{ "LightBlue", { 0xAD, 0xD8, 0xE6 } },
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{ "LightCoral", { 0xF0, 0x80, 0x80 } },
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{ "LightCyan", { 0xE0, 0xFF, 0xFF } },
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{ "LightGoldenRodYellow", { 0xFA, 0xFA, 0xD2 } },
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{ "LightGrey", { 0xD3, 0xD3, 0xD3 } },
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{ "LightGreen", { 0x90, 0xEE, 0x90 } },
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{ "LightPink", { 0xFF, 0xB6, 0xC1 } },
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{ "LightSalmon", { 0xFF, 0xA0, 0x7A } },
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{ "LightSeaGreen", { 0x20, 0xB2, 0xAA } },
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{ "LightSkyBlue", { 0x87, 0xCE, 0xFA } },
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{ "LightSlateGray", { 0x77, 0x88, 0x99 } },
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{ "LightSteelBlue", { 0xB0, 0xC4, 0xDE } },
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{ "LightYellow", { 0xFF, 0xFF, 0xE0 } },
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{ "Lime", { 0x00, 0xFF, 0x00 } },
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{ "LimeGreen", { 0x32, 0xCD, 0x32 } },
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{ "Linen", { 0xFA, 0xF0, 0xE6 } },
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{ "Magenta", { 0xFF, 0x00, 0xFF } },
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{ "Maroon", { 0x80, 0x00, 0x00 } },
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{ "MediumAquaMarine", { 0x66, 0xCD, 0xAA } },
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{ "MediumBlue", { 0x00, 0x00, 0xCD } },
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{ "MediumOrchid", { 0xBA, 0x55, 0xD3 } },
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{ "MediumPurple", { 0x93, 0x70, 0xD8 } },
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{ "MediumSeaGreen", { 0x3C, 0xB3, 0x71 } },
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{ "MediumSlateBlue", { 0x7B, 0x68, 0xEE } },
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{ "MediumSpringGreen", { 0x00, 0xFA, 0x9A } },
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{ "MediumTurquoise", { 0x48, 0xD1, 0xCC } },
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{ "MediumVioletRed", { 0xC7, 0x15, 0x85 } },
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{ "MidnightBlue", { 0x19, 0x19, 0x70 } },
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{ "MintCream", { 0xF5, 0xFF, 0xFA } },
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{ "MistyRose", { 0xFF, 0xE4, 0xE1 } },
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{ "Moccasin", { 0xFF, 0xE4, 0xB5 } },
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{ "NavajoWhite", { 0xFF, 0xDE, 0xAD } },
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{ "Navy", { 0x00, 0x00, 0x80 } },
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{ "OldLace", { 0xFD, 0xF5, 0xE6 } },
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{ "Olive", { 0x80, 0x80, 0x00 } },
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{ "OliveDrab", { 0x6B, 0x8E, 0x23 } },
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{ "Orange", { 0xFF, 0xA5, 0x00 } },
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{ "OrangeRed", { 0xFF, 0x45, 0x00 } },
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{ "Orchid", { 0xDA, 0x70, 0xD6 } },
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{ "PaleGoldenRod", { 0xEE, 0xE8, 0xAA } },
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{ "PaleGreen", { 0x98, 0xFB, 0x98 } },
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{ "PaleTurquoise", { 0xAF, 0xEE, 0xEE } },
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{ "PaleVioletRed", { 0xD8, 0x70, 0x93 } },
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{ "PapayaWhip", { 0xFF, 0xEF, 0xD5 } },
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{ "PeachPuff", { 0xFF, 0xDA, 0xB9 } },
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{ "Peru", { 0xCD, 0x85, 0x3F } },
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{ "Pink", { 0xFF, 0xC0, 0xCB } },
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{ "Plum", { 0xDD, 0xA0, 0xDD } },
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{ "PowderBlue", { 0xB0, 0xE0, 0xE6 } },
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{ "Purple", { 0x80, 0x00, 0x80 } },
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{ "Red", { 0xFF, 0x00, 0x00 } },
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{ "RosyBrown", { 0xBC, 0x8F, 0x8F } },
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{ "RoyalBlue", { 0x41, 0x69, 0xE1 } },
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{ "SaddleBrown", { 0x8B, 0x45, 0x13 } },
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{ "Salmon", { 0xFA, 0x80, 0x72 } },
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{ "SandyBrown", { 0xF4, 0xA4, 0x60 } },
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{ "SeaGreen", { 0x2E, 0x8B, 0x57 } },
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{ "SeaShell", { 0xFF, 0xF5, 0xEE } },
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{ "Sienna", { 0xA0, 0x52, 0x2D } },
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{ "Silver", { 0xC0, 0xC0, 0xC0 } },
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{ "SkyBlue", { 0x87, 0xCE, 0xEB } },
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{ "SlateBlue", { 0x6A, 0x5A, 0xCD } },
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{ "SlateGray", { 0x70, 0x80, 0x90 } },
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{ "Snow", { 0xFF, 0xFA, 0xFA } },
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{ "SpringGreen", { 0x00, 0xFF, 0x7F } },
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{ "SteelBlue", { 0x46, 0x82, 0xB4 } },
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{ "Tan", { 0xD2, 0xB4, 0x8C } },
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{ "Teal", { 0x00, 0x80, 0x80 } },
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{ "Thistle", { 0xD8, 0xBF, 0xD8 } },
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{ "Tomato", { 0xFF, 0x63, 0x47 } },
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{ "Turquoise", { 0x40, 0xE0, 0xD0 } },
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{ "Violet", { 0xEE, 0x82, 0xEE } },
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{ "Wheat", { 0xF5, 0xDE, 0xB3 } },
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{ "White", { 0xFF, 0xFF, 0xFF } },
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{ "WhiteSmoke", { 0xF5, 0xF5, 0xF5 } },
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{ "Yellow", { 0xFF, 0xFF, 0x00 } },
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{ "YellowGreen", { 0x9A, 0xCD, 0x32 } },
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};
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static int color_table_compare(const void *lhs, const void *rhs)
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{
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return strcasecmp(lhs, ((const ColorEntry *)rhs)->name);
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}
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#define ALPHA_SEP '@'
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int av_parse_color(uint8_t *rgba_color, const char *color_string, void *log_ctx)
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{
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char *tail, color_string2[128];
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const ColorEntry *entry;
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av_strlcpy(color_string2, color_string, sizeof(color_string2));
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if ((tail = strchr(color_string2, ALPHA_SEP)))
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*tail++ = 0;
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rgba_color[3] = 255;
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if (!strcasecmp(color_string2, "random") || !strcasecmp(color_string2, "bikeshed")) {
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int rgba = av_get_random_seed();
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rgba_color[0] = rgba >> 24;
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rgba_color[1] = rgba >> 16;
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rgba_color[2] = rgba >> 8;
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rgba_color[3] = rgba;
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} else if (!strncmp(color_string2, "0x", 2)) {
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char *tail;
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int len = strlen(color_string2);
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unsigned int rgba = strtoul(color_string2, &tail, 16);
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if (*tail || (len != 8 && len != 10)) {
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av_log(log_ctx, AV_LOG_ERROR, "Invalid 0xRRGGBB[AA] color string: '%s'\n", color_string2);
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return AVERROR(EINVAL);
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}
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if (len == 10) {
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rgba_color[3] = rgba;
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rgba >>= 8;
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}
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rgba_color[0] = rgba >> 16;
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rgba_color[1] = rgba >> 8;
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rgba_color[2] = rgba;
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} else {
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entry = bsearch(color_string2,
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color_table,
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FF_ARRAY_ELEMS(color_table),
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sizeof(ColorEntry),
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color_table_compare);
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if (!entry) {
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av_log(log_ctx, AV_LOG_ERROR, "Cannot find color '%s'\n", color_string2);
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return AVERROR(EINVAL);
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}
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memcpy(rgba_color, entry->rgb_color, 3);
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}
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if (tail) {
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unsigned long int alpha;
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const char *alpha_string = tail;
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if (!strncmp(alpha_string, "0x", 2)) {
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alpha = strtoul(alpha_string, &tail, 16);
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} else {
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alpha = strtoul(alpha_string, &tail, 10);
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if (*tail) {
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double d = strtod(alpha_string, &tail);
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alpha = d * 255;
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}
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}
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if (tail == alpha_string || *tail || alpha > 255) {
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av_log(log_ctx, AV_LOG_ERROR, "Invalid alpha value specifier '%s' in '%s'\n",
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alpha_string, color_string);
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return AVERROR(EINVAL);
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}
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rgba_color[3] = alpha;
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}
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return 0;
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}
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/**
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* Store the value in the field in ctx that is named like key.
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* ctx must be an AVClass context, storing is done using AVOptions.
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*
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* @param buf the string to parse, buf will be updated to point at the
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* separator just after the parsed key/value pair
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* @param key_val_sep a 0-terminated list of characters used to
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* separate key from value
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* @param pairs_sep a 0-terminated list of characters used to separate
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* two pairs from each other
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* @return 0 if the key/value pair has been successfully parsed and
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* set, or a negative value corresponding to an AVERROR code in case
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* of error:
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* AVERROR(EINVAL) if the key/value pair cannot be parsed,
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* the error code issued by av_set_string3() if the key/value pair
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* cannot be set
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*/
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static int parse_key_value_pair(void *ctx, const char **buf,
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const char *key_val_sep, const char *pairs_sep)
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{
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char *key = av_get_token(buf, key_val_sep);
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char *val;
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int ret;
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if (*key && strspn(*buf, key_val_sep)) {
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(*buf)++;
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val = av_get_token(buf, pairs_sep);
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} else {
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av_log(ctx, AV_LOG_ERROR, "Missing key or no key/value separator found after key '%s'\n", key);
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av_free(key);
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return AVERROR(EINVAL);
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}
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av_log(ctx, AV_LOG_DEBUG, "Setting value '%s' for key '%s'\n", val, key);
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ret = av_set_string3(ctx, key, val, 1, NULL);
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if (ret == AVERROR(ENOENT))
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av_log(ctx, AV_LOG_ERROR, "Key '%s' not found.\n", key);
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av_free(key);
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av_free(val);
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return ret;
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}
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int av_set_options_string(void *ctx, const char *opts,
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const char *key_val_sep, const char *pairs_sep)
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{
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int ret, count = 0;
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while (*opts) {
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if ((ret = parse_key_value_pair(ctx, &opts, key_val_sep, pairs_sep)) < 0)
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return ret;
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count++;
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if (*opts)
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opts++;
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}
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return count;
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}
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#ifdef TEST
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#undef printf
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typedef struct TestContext
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{
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const AVClass *class;
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int num;
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int toggle;
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char *string;
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int flags;
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AVRational rational;
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} TestContext;
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#define OFFSET(x) offsetof(TestContext, x)
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#define TEST_FLAG_COOL 01
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#define TEST_FLAG_LAME 02
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#define TEST_FLAG_MU 04
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static const AVOption test_options[]= {
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{"num", "set num", OFFSET(num), FF_OPT_TYPE_INT, 0, 0, 100 },
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{"toggle", "set toggle", OFFSET(toggle), FF_OPT_TYPE_INT, 0, 0, 1 },
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{"rational", "set rational", OFFSET(rational), FF_OPT_TYPE_RATIONAL, 0, 0, 10 },
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{"string", "set string", OFFSET(string), FF_OPT_TYPE_STRING, 0, CHAR_MIN, CHAR_MAX },
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{"flags", "set flags", OFFSET(flags), FF_OPT_TYPE_FLAGS, 0, 0, INT_MAX, 0, "flags" },
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{"cool", "set cool flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_COOL, INT_MIN, INT_MAX, 0, "flags" },
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{"lame", "set lame flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_LAME, INT_MIN, INT_MAX, 0, "flags" },
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{"mu", "set mu flag ", 0, FF_OPT_TYPE_CONST, TEST_FLAG_MU, INT_MIN, INT_MAX, 0, "flags" },
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{NULL},
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};
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static const char *test_get_name(void *ctx)
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{
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return "test";
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}
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static const AVClass test_class = {
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"TestContext",
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test_get_name,
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test_options
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};
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int main(void)
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{
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int i;
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const char *strings[] = {
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"''",
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"",
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":",
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"\\",
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"'",
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" '' :",
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" '' '' :",
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"foo '' :",
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"'foo'",
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"foo ",
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"foo\\",
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"foo': blah:blah",
|
|
"foo\\: blah:blah",
|
|
"foo\'",
|
|
"'foo : ' :blahblah",
|
|
"\\ :blah",
|
|
" foo",
|
|
" foo ",
|
|
" foo \\ ",
|
|
"foo ':blah",
|
|
" foo bar : blahblah",
|
|
"\\f\\o\\o",
|
|
"'foo : \\ \\ ' : blahblah",
|
|
"'\\fo\\o:': blahblah",
|
|
"\\'fo\\o\\:': foo ' :blahblah"
|
|
};
|
|
|
|
for (i=0; i < FF_ARRAY_ELEMS(strings); i++) {
|
|
const char *p= strings[i];
|
|
printf("|%s|", p);
|
|
printf(" -> |%s|", av_get_token(&p, ":"));
|
|
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",
|
|
"0xff000000",
|
|
"0x3e34ff",
|
|
"0x3e34ffaa",
|
|
"0xffXXee",
|
|
"0xfoobar",
|
|
"0xffffeeeeeeee",
|
|
"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 (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;
|
|
}
|
|
|
|
#endif
|