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author | Max Kellermann <max@duempel.org> | 2013-01-10 22:33:16 +0100 |
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committer | Max Kellermann <max@duempel.org> | 2013-01-10 22:33:16 +0100 |
commit | 85074f5ac6c1b912e1ac21d552e6fd524d29b39d (patch) | |
tree | 1497f5d400d96ee64f89cedc4bac162581df1122 /src/IcyMetaDataParser.hxx | |
parent | 12a8ed39d43a251754cff2688de5f2524e4aaf0e (diff) | |
download | mpd-85074f5ac6c1b912e1ac21d552e6fd524d29b39d.tar.gz mpd-85074f5ac6c1b912e1ac21d552e6fd524d29b39d.tar.xz mpd-85074f5ac6c1b912e1ac21d552e6fd524d29b39d.zip |
icy_metadata: convert to C++
Diffstat (limited to '')
-rw-r--r-- | src/IcyMetaDataParser.hxx | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/IcyMetaDataParser.hxx b/src/IcyMetaDataParser.hxx new file mode 100644 index 000000000..6ccc73f52 --- /dev/null +++ b/src/IcyMetaDataParser.hxx @@ -0,0 +1,83 @@ +/* + * Copyright (C) 2003-2013 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_ICY_META_DATA_PARSER_HXX +#define MPD_ICY_META_DATA_PARSER_HXX + +#include <stddef.h> + +class IcyMetaDataParser { + size_t data_size, data_rest; + + size_t meta_size, meta_position; + char *meta_data; + + struct tag *tag; + +public: + IcyMetaDataParser():data_size(0) {} + ~IcyMetaDataParser() { + Reset(); + } + + /** + * Initialize an enabled icy_metadata object with the specified + * data_size (from the icy-metaint HTTP response header). + */ + void Start(size_t _data_size) { + data_size = data_rest = _data_size; + meta_size = 0; + tag = nullptr; + } + + /** + * Resets the icy_metadata. Call this after rewinding the stream. + */ + void Reset(); + + /** + * Checks whether the icy_metadata object is enabled. + */ + bool IsDefined() const { + return data_size > 0; + } + + /** + * Evaluates data. Returns the number of bytes of normal data which + * can be read by the caller, but not more than "length". If the + * return value is smaller than "length", the caller should invoke + * icy_meta(). + */ + size_t Data(size_t length); + + /** + * Reads metadata from the stream. Returns the number of bytes + * consumed. If the return value is smaller than "length", the caller + * should invoke icy_data(). + */ + size_t Meta(const void *data, size_t length); + + struct tag *ReadTag() { + struct tag *result = tag; + tag = nullptr; + return result; + } +}; + +#endif |