/usr/include/lastfm/Fingerprint is in liblastfm-dev 0.4.0~really0.3.3-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | /*
Copyright 2009 Last.fm Ltd.
- Primarily authored by Max Howell, Jono Cole and Doug Mansell
This file is part of liblastfm.
liblastfm 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 3 of the License, or
(at your option) any later version.
liblastfm 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 liblastfm. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LASTFM_FINGERPRINT_H
#define LASTFM_FINGERPRINT_H
#include <lastfm/FingerprintId>
#include <lastfm/Track>
namespace lastfm
{
class LASTFM_DLLEXPORT Fingerprint
{
lastfm::Track m_track;
QByteArray m_data;
int m_id;
int m_duration;
protected:
bool m_complete;
public:
/** represents a partial fingerprint of 20 seconds of music, this is
* considered 99.9999...9999% unique and so we use it for most stuff as
* it is much quicker than a complete fingerprint, still though, you
* should do the generate step in a thread. */
Fingerprint( const lastfm::Track& );
/** if the id isNull(), then you'll need to do generate, submit and decode */
FingerprintId id() const { return m_id; }
/** The actual data that is the fingerprint, this is about 70kB or so,
* there isn't anything in it until you call generate. */
QByteArray data() const { return m_data; }
enum Error
{
ReadError = 0,
/** failed to extract samplerate, bitrate, channels, duration etc */
HeadersError,
DecodeError,
/** there is a minimum track duration for fingerprinting */
TrackTooShortError,
/** the fingerprint service went wrong, or we submitted bad data,
* or myabe the request failed, whatever, we couldn't parse the
* result */
BadResponseError,
/** sorry, liblastfm sucks, report bug with log! */
InternalError
};
/** This is CPU intensive, do it in a thread in your GUI application */
void generate( FingerprintableSource* ) throw( Error );
/** Submits the fingerprint data to Last.fm in order to get a FingerprintId
* back. You need to wait for the QNetworkReply to finish before you can
* pass it to decode clearly. */
QNetworkReply* submit() const;
/** Pass a finished reply from submit(), if the response is sound, id()
* will be valid. Otherwise we will throw. You always get a valid id
* or a throw.
*/
void decode( QNetworkReply*, bool* lastfm_needs_a_complete_fingerprint = 0 ) throw( Error );
};
class CompleteFingerprint : public Fingerprint
{
public:
CompleteFingerprint( const lastfm::Track& t ) : Fingerprint( t )
{
m_complete = true;
}
};
}
inline QDebug operator<<( QDebug d, lastfm::Fingerprint::Error e )
{
#define CASE(x) case lastfm::Fingerprint::x: return d << #x;
switch (e)
{
CASE(ReadError)
CASE(HeadersError)
CASE(DecodeError)
CASE(TrackTooShortError)
CASE(BadResponseError)
CASE(InternalError)
}
#undef CASE
}
#endif
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