Mercurial > hg > svcore
annotate data/fileio/AudioFileReader.cpp @ 1753:d954dfccd922 by-id
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author | Chris Cannam |
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date | Fri, 05 Jul 2019 16:55:20 +0100 |
parents | 54af1e21705c |
children |
rev | line source |
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Chris@175 | 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ |
Chris@175 | 2 |
Chris@175 | 3 /* |
Chris@175 | 4 Sonic Visualiser |
Chris@175 | 5 An audio file viewer and annotation editor. |
Chris@175 | 6 Centre for Digital Music, Queen Mary, University of London. |
Chris@175 | 7 This file copyright 2006 Chris Cannam. |
Chris@175 | 8 |
Chris@175 | 9 This program is free software; you can redistribute it and/or |
Chris@175 | 10 modify it under the terms of the GNU General Public License as |
Chris@175 | 11 published by the Free Software Foundation; either version 2 of the |
Chris@175 | 12 License, or (at your option) any later version. See the file |
Chris@175 | 13 COPYING included with this distribution for more information. |
Chris@175 | 14 */ |
Chris@175 | 15 |
Chris@175 | 16 #include "AudioFileReader.h" |
Chris@175 | 17 |
Chris@1041 | 18 using std::vector; |
Chris@1041 | 19 |
Chris@1326 | 20 vector<floatvec_t> |
Chris@1041 | 21 AudioFileReader::getDeInterleavedFrames(sv_frame_t start, sv_frame_t count) const |
Chris@327 | 22 { |
Chris@1326 | 23 floatvec_t interleaved = getInterleavedFrames(start, count); |
Chris@327 | 24 |
Chris@929 | 25 int channels = getChannelCount(); |
Chris@1096 | 26 if (channels == 1) return { interleaved }; |
Chris@1096 | 27 |
Chris@1038 | 28 sv_frame_t rc = interleaved.size() / channels; |
Chris@327 | 29 |
Chris@1326 | 30 vector<floatvec_t> frames(channels, floatvec_t(rc, 0.f)); |
Chris@1041 | 31 |
Chris@929 | 32 for (int c = 0; c < channels; ++c) { |
Chris@1041 | 33 for (sv_frame_t i = 0; i < rc; ++i) { |
Chris@1041 | 34 frames[c][i] = interleaved[i * channels + c]; |
Chris@1041 | 35 } |
Chris@327 | 36 } |
Chris@327 | 37 |
Chris@1041 | 38 return frames; |
Chris@327 | 39 } |
Chris@327 | 40 |