Merge branch 'c-interface'
This commit is contained in:
commit
da2b64b159
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@ -1,6 +1,6 @@
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cmake_minimum_required (VERSION 3.2)
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project(identiconpp
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VERSION 0.3.7
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VERSION 0.4.0
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LANGUAGES CXX
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)
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@ -38,6 +38,7 @@ target_link_libraries(example ${CMAKE_PROJECT_NAME})
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install(TARGETS ${CMAKE_PROJECT_NAME} DESTINATION ${CMAKE_INSTALL_LIBDIR})
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install(FILES src/${CMAKE_PROJECT_NAME}.hpp DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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install(FILES src/${CMAKE_PROJECT_NAME}_c.h DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
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install(FILES README.md DESTINATION ${CMAKE_INSTALL_DOCDIR})
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include(packages.CMakeLists.txt)
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@ -0,0 +1,104 @@
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/* This file is part of identiconpp.
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* Public Domain / CC-0
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*
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* Compile with gcc --std=c99 $(pkg-config --cflags --libs MagickWand) \
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* $(pkg-config --cflags --libs openssl) -lidenticonpp
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*/
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#include <stdint.h>
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#include <string.h>
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#include <stdio.h>
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#include "identiconpp_c.h"
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#include <MagickWand/MagickWand.h>
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#include <openssl/evp.h>
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#include <openssl/bio.h>
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char *b64decode(char *input, int length)
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{
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BIO *b64, *bmem;
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char *buffer = (char *)malloc(length);
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memset(buffer, 0, length);
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b64 = BIO_new(BIO_f_base64());
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BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL);
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bmem = BIO_new_mem_buf(input, length);
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bmem = BIO_push(b64, bmem);
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BIO_read(bmem, buffer, length);
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BIO_free_all(bmem);
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return buffer;
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}
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int main(int argc, char *argv[])
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{
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char digest[65] = "973dfe463ec85785f5f95af5ba3906ee"
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"db2d931c24e69824a89ea65dba4e813b";
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const char colors[6][9] =
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{
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"800000ff",
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"008000ff",
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"000080ff",
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"808000ff",
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"008080ff",
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"800080ff"
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};
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if (argc > 1)
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{
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strncpy(digest, argv[1], 64);
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}
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MagickWand *mw = NULL;
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MagickWandGenesis();
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mw = NewMagickWand();
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{
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const uint8_t padding[2] = { 20, 20 };
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identiconpp_setup(4, 4, identiconpp_ltr_symmetric,
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"ffffffff", colors, 6, padding);
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uint64_t len = identiconpp_generate("png", digest, 200);
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char base64[len];
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strcpy(base64, identiconpp_base64());
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MagickReadImageBlob(mw, b64decode(base64, len), len);
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MagickWriteImage(mw, "identicon1.png");
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}
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{
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const uint8_t padding[2] = { 0, 0 };
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identiconpp_setup(5, 5, identiconpp_sigil,
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"00000080", colors, 6, padding);
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uint64_t len = identiconpp_generate("png", digest, 200);
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char base64[len];
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strcpy(base64, identiconpp_base64());
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MagickReadImageBlob(mw, b64decode(base64, len), len);
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MagickWriteImage(mw, "identicon2.png");
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}
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{
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const uint8_t padding[2] = { 0, 0 };
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identiconpp_setup(5, 5, identiconpp_ltr_asymmetric,
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"000000ff", colors, 6, padding);
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uint64_t len = identiconpp_generate("png", digest, 200);
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char base64[len];
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strcpy(base64, identiconpp_base64());
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MagickReadImageBlob(mw, b64decode(base64, len), len);
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MagickWriteImage(mw, "identicon3.png");
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}
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{
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const uint8_t padding[2] = { 10, 10 };
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identiconpp_setup(6, 4, identiconpp_ltr_symmetric,
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"000000c0", colors, 6, padding);
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uint64_t len = identiconpp_generate("png", digest, 200);
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char base64[len];
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strcpy(base64, identiconpp_base64());
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MagickReadImageBlob(mw, b64decode(base64, len), len);
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MagickWriteImage(mw, "identicon4.png");
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}
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DestroyMagickWand(mw);
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MagickWandTerminus();
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}
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@ -0,0 +1,97 @@
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/* This file is part of identiconpp.
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* Copyright © 2019 tastytea <tastytea@tastytea.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <vector>
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#include <memory>
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#include <exception>
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#include <Magick++/Image.h>
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#include <Magick++/Blob.h>
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#include "identiconpp.hpp"
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#include "debug.hpp"
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#include "identiconpp_c.h"
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static std::unique_ptr<Identiconpp> identicon;
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static string base64;
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bool identiconpp_setup(const uint8_t columns, const uint8_t rows,
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identiconpp_algorithm type,
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const char background[9],
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const char foreground[][9],
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const uint8_t foreground_len,
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const uint8_t padding[2])
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{
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Identiconpp::algorithm algo;
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switch (type)
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{
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case identiconpp_ltr_symmetric:
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{
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algo = Identiconpp::algorithm::ltr_symmetric;
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break;
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}
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case identiconpp_ltr_asymmetric:
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{
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algo = Identiconpp::algorithm::ltr_asymmetric;
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break;
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}
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case identiconpp_sigil:
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{
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algo = Identiconpp::algorithm::sigil;
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break;
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}
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}
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std::vector<string> vforeground;
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for (uint8_t i = 0; i < foreground_len; ++i)
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{
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vforeground.push_back(foreground[i]);
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}
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try
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{
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identicon = std::make_unique<Identiconpp>(
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Identiconpp(columns, rows, algo, background, vforeground,
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{ padding[0], padding[1] }));
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}
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catch (const std::exception &e)
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{
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return false;
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}
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return true;
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}
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uint64_t identiconpp_generate(const char magick[],
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const char digest[], const uint16_t width)
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{
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try
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{
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Magick::Image img = identicon->generate(digest, width);
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Magick::Blob blob;
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img.magick(magick);
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img.write(&blob);
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base64 = blob.base64();
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return blob.base64().length();
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}
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catch (const std::exception &e)
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{
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return 0;
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}
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}
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const char *identiconpp_base64()
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{
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return base64.c_str();
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}
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@ -0,0 +1,83 @@
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/* This file is part of identiconpp.
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* Copyright © 2019 tastytea <tastytea@tastytea.de>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 3.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef IDENTICONPP_H
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#define IDENTICONPP_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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#include <stdbool.h>
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#include <stdint.h>
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#include <stddef.h>
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/*!
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* @example example.c
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*/
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/*!
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* @brief C interface for identiconpp.
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*/
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/*!
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* @brief List of identicon algorithms
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*/
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typedef enum
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{
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identiconpp_ltr_symmetric,
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identiconpp_ltr_asymmetric,
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identiconpp_sigil
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} identiconpp_algorithm;
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/*!
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* @brief Setup identicon parameters.
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*
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* @param columns Number of columns
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* @param rows Number of rows
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* @param type The algorithm to use
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* @param background Background color, hexadecimal, rrggbbaa
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* @param foreground Array of foreground colors
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* @param foreground_len Length of the array of foreground colors
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* @param padding Padding in pixels { left & right, top & down }
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*
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* @return false on error.
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*/
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bool identiconpp_setup(const uint8_t columns, const uint8_t rows,
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identiconpp_algorithm type,
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const char background[9],
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const char foreground[][9],
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const uint8_t foreground_len,
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const uint8_t padding[2]);
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/*!
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* @brief Generates identicon from digest.
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*
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* @param magick See http://imagemagick.org/script/formats.php
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* @param digest The pre-computed digest
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* @param width The width of the identicon
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*
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* @return Length of the generated base64-string, or 0 on error.
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*/
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uint64_t identiconpp_generate(const char magick[],
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const char digest[], const uint16_t width);
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const char *identiconpp_base64();
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#ifdef __cplusplus
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}
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#endif
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#endif // IDENTICONPP_H
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