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Diffstat (limited to 'libs/taglib/taglib/mpeg/mpegproperties.cpp')
-rw-r--r--libs/taglib/taglib/mpeg/mpegproperties.cpp252
1 files changed, 0 insertions, 252 deletions
diff --git a/libs/taglib/taglib/mpeg/mpegproperties.cpp b/libs/taglib/taglib/mpeg/mpegproperties.cpp
deleted file mode 100644
index 518de61c71..0000000000
--- a/libs/taglib/taglib/mpeg/mpegproperties.cpp
+++ /dev/null
@@ -1,252 +0,0 @@
-/***************************************************************************
- copyright : (C) 2002 - 2008 by Scott Wheeler
- email : wheeler@kde.org
- ***************************************************************************/
-
-/***************************************************************************
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
- * 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 <tdebug.h>
-#include <tstring.h>
-
-#include "mpegproperties.h"
-#include "mpegfile.h"
-#include "xingheader.h"
-
-using namespace TagLib;
-
-class MPEG::Properties::PropertiesPrivate
-{
-public:
- PropertiesPrivate(File *f, ReadStyle s) :
- file(f),
- xingHeader(0),
- style(s),
- length(0),
- bitrate(0),
- sampleRate(0),
- channels(0),
- layer(0),
- version(Header::Version1),
- channelMode(Header::Stereo),
- protectionEnabled(false),
- isCopyrighted(false),
- isOriginal(false) {}
-
- ~PropertiesPrivate()
- {
- delete xingHeader;
- }
-
- File *file;
- XingHeader *xingHeader;
- ReadStyle style;
- int length;
- int bitrate;
- int sampleRate;
- int channels;
- int layer;
- Header::Version version;
- Header::ChannelMode channelMode;
- bool protectionEnabled;
- bool isCopyrighted;
- bool isOriginal;
-};
-
-////////////////////////////////////////////////////////////////////////////////
-// public members
-////////////////////////////////////////////////////////////////////////////////
-
-MPEG::Properties::Properties(File *file, ReadStyle style) : AudioProperties(style)
-{
- d = new PropertiesPrivate(file, style);
-
- if(file && file->isOpen())
- read();
-}
-
-MPEG::Properties::~Properties()
-{
- delete d;
-}
-
-int MPEG::Properties::length() const
-{
- return d->length;
-}
-
-int MPEG::Properties::bitrate() const
-{
- return d->bitrate;
-}
-
-int MPEG::Properties::sampleRate() const
-{
- return d->sampleRate;
-}
-
-int MPEG::Properties::channels() const
-{
- return d->channels;
-}
-
-const MPEG::XingHeader *MPEG::Properties::xingHeader() const
-{
- return d->xingHeader;
-}
-
-MPEG::Header::Version MPEG::Properties::version() const
-{
- return d->version;
-}
-
-int MPEG::Properties::layer() const
-{
- return d->layer;
-}
-
-bool MPEG::Properties::protectionEnabled() const
-{
- return d->protectionEnabled;
-}
-
-MPEG::Header::ChannelMode MPEG::Properties::channelMode() const
-{
- return d->channelMode;
-}
-
-bool MPEG::Properties::isCopyrighted() const
-{
- return d->isCopyrighted;
-}
-
-bool MPEG::Properties::isOriginal() const
-{
- return d->isOriginal;
-}
-
-////////////////////////////////////////////////////////////////////////////////
-// private members
-////////////////////////////////////////////////////////////////////////////////
-
-void MPEG::Properties::read()
-{
- // Since we've likely just looked for the ID3v1 tag, start at the end of the
- // file where we're least likely to have to have to move the disk head.
-
- long last = d->file->lastFrameOffset();
-
- if(last < 0) {
- debug("MPEG::Properties::read() -- Could not find a valid last MPEG frame in the stream.");
- return;
- }
-
- d->file->seek(last);
- Header lastHeader(d->file->readBlock(4));
-
- long first = d->file->firstFrameOffset();
-
- if(first < 0) {
- debug("MPEG::Properties::read() -- Could not find a valid first MPEG frame in the stream.");
- return;
- }
-
- if(!lastHeader.isValid()) {
-
- long pos = last;
-
- while(pos > first) {
-
- pos = d->file->previousFrameOffset(pos);
-
- if(pos < 0)
- break;
-
- d->file->seek(pos);
- Header header(d->file->readBlock(4));
-
- if(header.isValid()) {
- lastHeader = header;
- last = pos;
- break;
- }
- }
- }
-
- // Now jump back to the front of the file and read what we need from there.
-
- d->file->seek(first);
- Header firstHeader(d->file->readBlock(4));
-
- if(!firstHeader.isValid() || !lastHeader.isValid()) {
- debug("MPEG::Properties::read() -- Page headers were invalid.");
- return;
- }
-
- // Check for a Xing header that will help us in gathering information about a
- // VBR stream.
-
- int xingHeaderOffset = MPEG::XingHeader::xingHeaderOffset(firstHeader.version(),
- firstHeader.channelMode());
-
- d->file->seek(first + xingHeaderOffset);
- d->xingHeader = new XingHeader(d->file->readBlock(16));
-
- // Read the length and the bitrate from the Xing header.
-
- if(d->xingHeader->isValid() &&
- firstHeader.sampleRate() > 0 &&
- d->xingHeader->totalFrames() > 0)
- {
- double timePerFrame =
- double(firstHeader.samplesPerFrame()) / firstHeader.sampleRate();
-
- d->length = int(timePerFrame * d->xingHeader->totalFrames());
- d->bitrate = d->length > 0 ? d->xingHeader->totalSize() * 8 / d->length / 1000 : 0;
- }
- else {
- // Since there was no valid Xing header found, we hope that we're in a constant
- // bitrate file.
-
- delete d->xingHeader;
- d->xingHeader = 0;
-
- // TODO: Make this more robust with audio property detection for VBR without a
- // Xing header.
-
- if(firstHeader.frameLength() > 0 && firstHeader.bitrate() > 0) {
- int frames = (last - first) / firstHeader.frameLength() + 1;
-
- d->length = int(float(firstHeader.frameLength() * frames) /
- float(firstHeader.bitrate() * 125) + 0.5);
- d->bitrate = firstHeader.bitrate();
- }
- }
-
-
- d->sampleRate = firstHeader.sampleRate();
- d->channels = firstHeader.channelMode() == Header::SingleChannel ? 1 : 2;
- d->version = firstHeader.version();
- d->layer = firstHeader.layer();
- d->protectionEnabled = firstHeader.protectionEnabled();
- d->channelMode = firstHeader.channelMode();
- d->isCopyrighted = firstHeader.isCopyrighted();
- d->isOriginal = firstHeader.isOriginal();
-}
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