193 lines
5.6 KiB
C++
193 lines
5.6 KiB
C++
/***************************************************************************
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copyright : (C) 2011 by Mathias Panzenböck
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email : grosser.meister.morti@gmx.net
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***************************************************************************/
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/***************************************************************************
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* This library is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU Lesser General Public License version *
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* 2.1 as published by the Free Software Foundation. *
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* *
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* This library is distributed in the hope that it will be useful, but *
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* WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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* Lesser General Public License for more details. *
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* *
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* You should have received a copy of the GNU Lesser General Public *
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* License along with this library; if not, write to the Free Software *
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA *
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* 02110-1301 USA *
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* *
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* Alternatively, this file is available under the Mozilla Public *
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* License Version 1.1. You may obtain a copy of the License at *
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* http://www.mozilla.org/MPL/ *
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***************************************************************************/
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#include "modfile.h"
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#include "tstringlist.h"
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#include "tdebug.h"
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#include "modfileprivate.h"
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#include "tpropertymap.h"
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using namespace TagLib;
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using namespace Mod;
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class Mod::File::FilePrivate
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{
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public:
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FilePrivate(AudioProperties::ReadStyle propertiesStyle)
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: properties(propertiesStyle)
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{
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}
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Mod::Tag tag;
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Mod::Properties properties;
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};
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Mod::File::File(FileName file, bool readProperties,
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AudioProperties::ReadStyle propertiesStyle) :
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Mod::FileBase(file),
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d(new FilePrivate(propertiesStyle))
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{
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if(isOpen())
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read(readProperties);
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}
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Mod::File::File(IOStream *stream, bool readProperties,
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AudioProperties::ReadStyle propertiesStyle) :
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Mod::FileBase(stream),
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d(new FilePrivate(propertiesStyle))
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{
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if(isOpen())
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read(readProperties);
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}
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Mod::File::~File()
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{
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delete d;
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}
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Mod::Tag *Mod::File::tag() const
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{
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return &d->tag;
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}
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Mod::Properties *Mod::File::audioProperties() const
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{
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return &d->properties;
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}
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PropertyMap Mod::File::properties() const
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{
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return d->tag.properties();
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}
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PropertyMap Mod::File::setProperties(const PropertyMap &properties)
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{
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return d->tag.setProperties(properties);
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}
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bool Mod::File::save()
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{
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if(readOnly()) {
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debug("Mod::File::save() - Cannot save to a read only file.");
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return false;
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}
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seek(0);
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writeString(d->tag.title(), 20);
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StringList lines = d->tag.comment().split("\n");
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unsigned int n = std::min(lines.size(), d->properties.instrumentCount());
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for(unsigned int i = 0; i < n; ++ i) {
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writeString(lines[i], 22);
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seek(8, Current);
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}
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for(unsigned int i = n; i < d->properties.instrumentCount(); ++ i) {
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writeString(String(), 22);
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seek(8, Current);
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}
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return true;
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}
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void Mod::File::read(bool)
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{
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if(!isOpen())
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return;
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seek(1080);
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ByteVector modId = readBlock(4);
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READ_ASSERT(modId.size() == 4);
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int channels = 4;
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unsigned int instruments = 31;
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if(modId == "M.K." || modId == "M!K!" || modId == "M&K!" || modId == "N.T.") {
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d->tag.setTrackerName("ProTracker");
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channels = 4;
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}
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else if(modId.startsWith("FLT") || modId.startsWith("TDZ")) {
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d->tag.setTrackerName("StarTrekker");
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char digit = modId[3];
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READ_ASSERT(digit >= '0' && digit <= '9');
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channels = digit - '0';
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}
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else if(modId.endsWith("CHN")) {
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d->tag.setTrackerName("StarTrekker");
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char digit = modId[0];
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READ_ASSERT(digit >= '0' && digit <= '9');
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channels = digit - '0';
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}
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else if(modId == "CD81" || modId == "OKTA") {
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d->tag.setTrackerName("Atari Oktalyzer");
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channels = 8;
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}
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else if(modId.endsWith("CH") || modId.endsWith("CN")) {
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d->tag.setTrackerName("TakeTracker");
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char digit = modId[0];
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READ_ASSERT(digit >= '0' && digit <= '9');
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channels = (digit - '0') * 10;
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digit = modId[1];
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READ_ASSERT(digit >= '0' && digit <= '9');
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channels += digit - '0';
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}
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else {
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// Not sure if this is correct. I'd need a file
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// created with NoiseTracker to check this.
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d->tag.setTrackerName("NoiseTracker"); // probably
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channels = 4;
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instruments = 15;
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}
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d->properties.setChannels(channels);
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d->properties.setInstrumentCount(instruments);
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seek(0);
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READ_STRING(d->tag.setTitle, 20);
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StringList comment;
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for(unsigned int i = 0; i < instruments; ++ i) {
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READ_STRING_AS(instrumentName, 22);
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// value in words, * 2 (<< 1) for bytes:
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READ_U16B_AS(sampleLength);
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READ_BYTE_AS(fineTuneByte);
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int fineTune = fineTuneByte & 0xF;
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// > 7 means negative value
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if(fineTune > 7) fineTune -= 16;
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READ_BYTE_AS(volume);
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if(volume > 64) volume = 64;
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// volume in decibels: 20 * log10(volume / 64)
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// value in words, * 2 (<< 1) for bytes:
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READ_U16B_AS(repeatStart);
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// value in words, * 2 (<< 1) for bytes:
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READ_U16B_AS(repatLength);
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comment.append(instrumentName);
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}
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READ_BYTE(d->properties.setLengthInPatterns);
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d->tag.setComment(comment.toString("\n"));
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}
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