120 lines
3.8 KiB
C++
120 lines
3.8 KiB
C++
/*
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* Strawberry Music Player
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* Copyright 2022, Eoin O'Neill <eoinoneill1991@gmail.com>
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*
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* Strawberry is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Strawberry is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Strawberry. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef TAGREADERGME_H
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#define TAGREADERGME_H
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#include <taglib/tstring.h>
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#include <QByteArray>
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#include <QString>
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#include <QFileInfo>
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#include "tagreaderbase.h"
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#include "tagreadermessages.pb.h"
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namespace GME {
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bool IsSupportedFormat(const QFileInfo &file_info);
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bool ReadFile(const QFileInfo &file_info, spb::tagreader::SongMetadata *song_info);
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uint32_t UnpackBytes32(const char *const arr, size_t length);
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namespace SPC {
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// SPC SPEC: http://vspcplay.raphnet.net/spc_file_format.txt
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constexpr int HAS_ID6_OFFSET = 0x23;
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constexpr int SONG_TITLE_OFFSET = 0x2E;
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constexpr int GAME_TITLE_OFFSET = 0x4E;
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constexpr int DUMPER_OFFSET = 0x6E;
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constexpr int COMMENTS_OFFSET = 0x7E;
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// It seems that intro length and fade length are inconsistent from file to file.
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// It should be looked into within the GME source code to see how GStreamer gets its values for playback length.
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constexpr int INTRO_LENGTH_OFFSET = 0xA9;
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constexpr int INTRO_LENGTH_SIZE = 3;
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constexpr int FADE_LENGTH_OFFSET = 0xAC;
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constexpr int FADE_LENGTH_SIZE = 4;
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constexpr int ARTIST_OFFSET = 0xB1;
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constexpr int XID6_OFFSET = (0x101C0 + 64);
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constexpr int NANO_PER_MS = 1000000;
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enum class xID6_STATUS {
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ON = 0x26,
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OFF = 0x27
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};
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enum class xID6_ID {
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SongName = 0x01,
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GameName = 0x02,
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ArtistName = 0x03
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};
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enum class xID6_TYPE {
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Length = 0x0,
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String = 0x1,
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Integer = 0x4
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};
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void Read(const QFileInfo &file_info, spb::tagreader::SongMetadata *song_info);
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qint16 GetNextMemAddressAlign32bit(qint16 input);
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quint64 ConvertSPCStringToNum(const QByteArray &arr);
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} // namespace SPC
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namespace VGM {
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// VGM SPEC:
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// http://www.smspower.org/uploads/Music/vgmspec170.txt?sid=17c810c54633b6dd4982f92f718361c1
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// GD3 TAG SPEC:
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// http://www.smspower.org/uploads/Music/gd3spec100.txt
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constexpr int GD3_TAG_PTR = 0x14;
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constexpr int SAMPLE_COUNT = 0x18;
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constexpr int LOOP_SAMPLE_COUNT = 0x20;
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constexpr int SAMPLE_TIMEBASE = 44100;
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constexpr int GST_GME_LOOP_TIME_MS = 8000;
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void Read(const QFileInfo &file_info, spb::tagreader::SongMetadata *song_info);
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// Takes in two QByteArrays, expected to be 4 bytes long. Desired length is returned via output parameter out_length. Returns false on error.
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bool GetPlaybackLength(const QByteArray &sample_count_bytes, const QByteArray &loop_count_bytes, quint64 &out_length);
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} // namespace VGM
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} // namespace GME
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// TagReaderGME
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// Fulfills Strawberry's Intended interface for tag reading.
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class TagReaderGME : public TagReaderBase {
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public:
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explicit TagReaderGME();
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~TagReaderGME();
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bool IsMediaFile(const QString &filename) const override;
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bool ReadFile(const QString &filename, spb::tagreader::SongMetadata *song) const override;
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bool SaveFile(const spb::tagreader::SaveFileRequest &request) const override;
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QByteArray LoadEmbeddedArt(const QString &filename) const override;
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bool SaveEmbeddedArt(const spb::tagreader::SaveEmbeddedArtRequest &request) const override;
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bool SaveSongPlaycountToFile(const QString &filename, const spb::tagreader::SongMetadata &song) const override;
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bool SaveSongRatingToFile(const QString &filename, const spb::tagreader::SongMetadata &song) const override;
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};
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#endif
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