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Diffstat (limited to 'src/plugins/Input/opus/opusproperties.cpp')
| -rw-r--r-- | src/plugins/Input/opus/opusproperties.cpp | 161 |
1 files changed, 0 insertions, 161 deletions
diff --git a/src/plugins/Input/opus/opusproperties.cpp b/src/plugins/Input/opus/opusproperties.cpp deleted file mode 100644 index 89ede973d..000000000 --- a/src/plugins/Input/opus/opusproperties.cpp +++ /dev/null @@ -1,161 +0,0 @@ -/*************************************************************************** - copyright : (C) 2012 by Lukáš Lalinský - email : lalinsky@gmail.com - - copyright : (C) 2002 - 2008 by Scott Wheeler - email : wheeler@kde.org - (original Vorbis implementation) - ***************************************************************************/ - -/*************************************************************************** - * This library is free software; you can redistribute it and/or modify * - * it under the terms of the GNU Lesser General Public License version * - * 2.1 as published by the Free Software Foundation. * - * * - * This library 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 * - * Lesser General Public License for more details. * - * * - * You should have received a copy of the GNU Lesser General Public * - * License along with this library; if not, write to the Free Software * - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * - * 02110-1301 USA * - * * - * Alternatively, this file is available under the Mozilla Public * - * License Version 1.1. You may obtain a copy of the License at * - * http://www.mozilla.org/MPL/ * - ***************************************************************************/ - -#include <taglib/tstring.h> -#include "tdebug.h" - -#include <taglib/oggpageheader.h> - -#include "opusproperties.h" -#include "opusfile.h" - -using namespace TagLib; -using namespace TagLib::Ogg; - -class Opus::Properties::PropertiesPrivate -{ -public: - PropertiesPrivate(File *f, ReadStyle s) : - file(f), - style(s), - length(0), - inputSampleRate(0), - channels(0), - opusVersion(0) {} - - File *file; - ReadStyle style; - int length; - int inputSampleRate; - int channels; - int opusVersion; -}; - -//////////////////////////////////////////////////////////////////////////////// -// public members -//////////////////////////////////////////////////////////////////////////////// - -Opus::Properties::Properties(File *file, ReadStyle style) : AudioProperties(style) -{ - d = new PropertiesPrivate(file, style); - read(); -} - -Opus::Properties::~Properties() -{ - delete d; -} - -int Opus::Properties::length() const -{ - return d->length; -} - -int Opus::Properties::bitrate() const -{ - return 0; -} - -int Opus::Properties::sampleRate() const -{ - // Opus can decode any stream at a sample rate of 8, 12, 16, 24, or 48 kHz, - // so there is no single sample rate. Let's assume it's the highest - // possible. - return 48000; -} - -int Opus::Properties::channels() const -{ - return d->channels; -} - -int Opus::Properties::inputSampleRate() const -{ - return d->inputSampleRate; -} - -int Opus::Properties::opusVersion() const -{ - return d->opusVersion; -} - -//////////////////////////////////////////////////////////////////////////////// -// private members -//////////////////////////////////////////////////////////////////////////////// - -void Opus::Properties::read() -{ - // Get the identification header from the Ogg implementation. - - // http://tools.ietf.org/html/draft-terriberry-oggopus-01#section-5.1 - - ByteVector data = d->file->packet(0); - - // *Magic Signature* - int pos = 8; - - // *Version* (8 bits, unsigned) - d->opusVersion = uchar(data.at(pos)); - pos += 1; - - // *Output Channel Count* 'C' (8 bits, unsigned) - d->channels = uchar(data.at(pos)); - pos += 1; - - // *Pre-skip* (16 bits, unsigned, little endian) - ushort preSkip = data.mid(pos, 2).toUShort(false); - pos += 2; - - // *Input Sample Rate* (32 bits, unsigned, little endian) - d->inputSampleRate = data.mid(pos, 4).toUInt(false); - pos += 4; - - // *Output Gain* (16 bits, signed, little endian) - pos += 2; - - // *Channel Mapping Family* (8 bits, unsigned) - pos += 1; - - const Ogg::PageHeader *first = d->file->firstPageHeader(); - const Ogg::PageHeader *last = d->file->lastPageHeader(); - - if(first && last) { - long long start = first->absoluteGranularPosition(); - long long end = last->absoluteGranularPosition(); - - if(start >= 0 && end >= 0) - d->length = (int) ((end - start - preSkip) / 48000); - else { - debug("Opus::Properties::read() -- The PCM values for the start or " - "end of this file was incorrect."); - } - } - else - debug("Opus::Properties::read() -- Could not find valid first and last Ogg pages."); -} |