diff options
author | Max Kellermann <max@musicpd.org> | 2018-08-10 18:06:50 +0200 |
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committer | Max Kellermann <max@musicpd.org> | 2018-10-24 10:52:45 +0200 |
commit | 30e22b753b06660d888eb42a8c74d950d044d6dd (patch) | |
tree | 3f19a698a757949c4562bf1b8b7f08e6df151dbd /src/tag | |
parent | f7141c920121e9c6cef6582c89a73da74b814e2e (diff) |
tag/Chromaprint: OO wrapper for a ChromaprintContext
Diffstat (limited to 'src/tag')
-rw-r--r-- | src/tag/Chromaprint.hxx | 73 | ||||
-rw-r--r-- | src/tag/meson.build | 3 |
2 files changed, 76 insertions, 0 deletions
diff --git a/src/tag/Chromaprint.hxx b/src/tag/Chromaprint.hxx new file mode 100644 index 000000000..3aaeb74d9 --- /dev/null +++ b/src/tag/Chromaprint.hxx @@ -0,0 +1,73 @@ +/* + * Copyright 2003-2018 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#ifndef MPD_CHROMAPRINT_HXX +#define MPD_CHROMAPRINT_HXX + +#include "util/ScopeExit.hxx" + +#include <chromaprint.h> + +#include <stdexcept> +#include <string> + +namespace Chromaprint { + +class Context { + ChromaprintContext *const ctx; + +public: + Context() noexcept + :ctx(chromaprint_new(CHROMAPRINT_ALGORITHM_DEFAULT)) {} + + ~Context() noexcept { + chromaprint_free(ctx); + } + + Context(const Context &) = delete; + Context &operator=(const Context &) = delete; + + void Start(unsigned sample_rate, unsigned num_channels) { + if (chromaprint_start(ctx, sample_rate, num_channels) != 1) + throw std::runtime_error("chromaprint_start() failed"); + } + + void Feed(const int16_t *data, size_t size) { + if (chromaprint_feed(ctx, data, size) != 1) + throw std::runtime_error("chromaprint_feed() failed"); + } + + void Finish() { + if (chromaprint_finish(ctx) != 1) + throw std::runtime_error("chromaprint_finish() failed"); + } + + std::string GetFingerprint() const { + char *fingerprint; + if (chromaprint_get_fingerprint(ctx, &fingerprint) != 1) + throw std::runtime_error("chromaprint_get_fingerprint() failed"); + + AtScopeExit(fingerprint) { chromaprint_dealloc(fingerprint); }; + return fingerprint; + } +}; + +} //namespace Chromaprint + +#endif diff --git a/src/tag/meson.build b/src/tag/meson.build index c423417d1..08b9e5e92 100644 --- a/src/tag/meson.build +++ b/src/tag/meson.build @@ -33,6 +33,9 @@ if libid3tag_dep.found() ] endif +chromaprint_dep = dependency('libchromaprint', required: get_option('chromaprint')) +conf.set('ENABLE_CHROMAPRINT', chromaprint_dep.found()) + tag = static_library( 'tag', tag_sources, |