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authork-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-08-27 13:28:57 +0000
committerk-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-08-27 13:28:57 +0000
commit1ba91d5a0e1df7419a561f6dcf16a0839509a5e7 (patch)
tree3f76e96fc5a3f5b738dabce28642ff2415748ccb /src/Classes/UMusic.pas
parente9fd8ce40b4cbf006695fd6e56f84071407843c9 (diff)
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Reordering of the directories[1]: moving Game/Code to src
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1302 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'src/Classes/UMusic.pas')
-rw-r--r--src/Classes/UMusic.pas1233
1 files changed, 1233 insertions, 0 deletions
diff --git a/src/Classes/UMusic.pas b/src/Classes/UMusic.pas
new file mode 100644
index 00000000..6476f629
--- /dev/null
+++ b/src/Classes/UMusic.pas
@@ -0,0 +1,1233 @@
+unit UMusic;
+
+interface
+
+{$IFDEF FPC}
+ {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+ UTime,
+ Classes;
+
+type
+ TNoteType = (ntFreestyle, ntNormal, ntGolden);
+
+ (**
+ * TLineFragment represents a fragment of a lyrics line.
+ * This is a text-fragment (e.g. a syllable) assigned to a note pitch,
+ * represented by a bar in the sing-screen.
+ *)
+ PLineFragment = ^TLineFragment;
+ TLineFragment = record
+ Color: integer;
+ Start: integer; // beat the fragment starts at
+ Length: integer; // length in beats
+ Tone: integer; // full range tone
+ Text: string; // text assigned to this fragment (a syllable, word, etc.)
+ NoteType: TNoteType; // note-type: golden-note/freestyle etc.
+ end;
+
+ (**
+ * TLine represents one lyrics line and consists of multiple
+ * notes.
+ *)
+ PLine = ^TLine;
+ TLine = record
+ Start: integer; // the start beat of this line (<> start beat of the first note of this line)
+ Lyric: string;
+ LyricWidth: real; // @deprecated: width of the line in pixels.
+ // Do not use this as the width is not correct.
+ // Use TLyricsEngine.GetUpperLine().Width instead.
+ End_: integer;
+ BaseNote: integer;
+ HighNote: integer; // index of last note in line (= High(Note)?)
+ TotalNotes: integer; // value of all notes in the line
+ LastLine: boolean;
+ Note: array of TLineFragment;
+ end;
+
+ (**
+ * TLines stores sets of lyric lines and information on them.
+ * Normally just one set is defined but in duet mode it might for example
+ * contain two sets.
+ *)
+ TLines = record
+ Current: integer; // for drawing of current line
+ High: integer; // (= High(Line)?)
+ Number: integer;
+ Resolution: integer;
+ NotesGAP: integer;
+ ScoreValue: integer;
+ Line: array of TLine;
+ end;
+
+ (**
+ * TLyricsState contains all information concerning the
+ * state of the lyrics, e.g. the current beat or duration of the lyrics.
+ *)
+ TLyricsState = class
+ private
+ Timer: TRelativeTimer; // keeps track of the current time
+ public
+ OldBeat: integer; // previous discovered beat
+ CurrentBeat: integer; // current beat (rounded)
+ MidBeat: real; // current beat (float)
+
+ // now we use this for super synchronization!
+ // only used when analyzing voice
+ // TODO: change ...D to ...Detect(ed)
+ OldBeatD: integer; // previous discovered beat
+ CurrentBeatD: integer; // current discovered beat (rounded)
+ MidBeatD: real; // current discovered beat (float)
+
+ // we use this for audible clicks
+ // TODO: Change ...C to ...Click
+ OldBeatC: integer; // previous discovered beat
+ CurrentBeatC: integer;
+ MidBeatC: real; // like CurrentBeatC
+
+ OldLine: integer; // previous displayed sentence
+
+ StartTime: real; // time till start of lyrics (= Gap)
+ TotalTime: real; // total song time
+
+ constructor Create();
+ procedure Pause();
+ procedure Resume();
+
+ procedure Reset();
+ procedure UpdateBeats();
+
+ (**
+ * current song time (in seconds) used as base-timer for lyrics etc.
+ *)
+ function GetCurrentTime(): real;
+ procedure SetCurrentTime(Time: real);
+ end;
+
+
+const
+ FFTSize = 512; // size of FFT data (output: FFTSize/2 values)
+type
+ TFFTData = array[0..(FFTSize div 2)-1] of Single;
+
+type
+ PPCMStereoSample = ^TPCMStereoSample;
+ TPCMStereoSample = array[0..1] of SmallInt;
+ TPCMData = array[0..511] of TPCMStereoSample;
+
+type
+ TStreamStatus = (ssStopped, ssPlaying, ssPaused);
+const
+ StreamStatusStr: array[TStreamStatus] of string =
+ ('Stopped', 'Playing', 'Paused');
+
+type
+ TAudioSampleFormat = (
+ asfU8, asfS8, // unsigned/signed 8 bits
+ asfU16LSB, asfS16LSB, // unsigned/signed 16 bits (endianness: LSB)
+ asfU16MSB, asfS16MSB, // unsigned/signed 16 bits (endianness: MSB)
+ asfU16, asfS16, // unsigned/signed 16 bits (endianness: System)
+ asfS24, // signed 24 bits (endianness: System)
+ asfS32, // signed 32 bits (endianness: System)
+ asfFloat // float
+ );
+
+const
+ // Size of one sample (one channel only) in bytes
+ AudioSampleSize: array[TAudioSampleFormat] of integer = (
+ 1, 1, // asfU8, asfS8
+ 2, 2, // asfU16LSB, asfS16LSB
+ 2, 2, // asfU16MSB, asfS16MSB
+ 2, 2, // asfU16, asfS16
+ 3, // asfS24
+ 4, // asfS32
+ 4 // asfFloat
+ );
+
+const
+ CHANNELMAP_LEFT = 1;
+ CHANNELMAP_RIGHT = 2;
+ CHANNELMAP_FRONT = CHANNELMAP_LEFT or CHANNELMAP_RIGHT;
+
+type
+ TAudioFormatInfo = class
+ private
+ fSampleRate : double;
+ fChannels : byte;
+ fFormat : TAudioSampleFormat;
+ fFrameSize : integer;
+
+ procedure SetChannels(Channels: byte);
+ procedure SetFormat(Format: TAudioSampleFormat);
+ procedure UpdateFrameSize();
+ function GetBytesPerSec(): double;
+ public
+ constructor Create(Channels: byte; SampleRate: double; Format: TAudioSampleFormat);
+ function Copy(): TAudioFormatInfo;
+
+ (**
+ * Returns the inverse ratio of the size of data in this format to its
+ * size in a given target format.
+ * Example: SrcSize*SrcInfo.GetRatio(TgtInfo) = TgtSize
+ *)
+ function GetRatio(TargetInfo: TAudioFormatInfo): double;
+
+ property SampleRate: double read fSampleRate write fSampleRate;
+ property Channels: byte read fChannels write SetChannels;
+ property Format: TAudioSampleFormat read fFormat write SetFormat;
+ property FrameSize: integer read fFrameSize;
+ property BytesPerSec: double read GetBytesPerSec;
+ end;
+
+type
+ TSoundEffect = class
+ public
+ EngineData: Pointer; // can be used for engine-specific data
+ procedure Callback(Buffer: PChar; BufSize: integer); virtual; abstract;
+ end;
+
+ TVoiceRemoval = class(TSoundEffect)
+ public
+ procedure Callback(Buffer: PChar; BufSize: integer); override;
+ end;
+
+type
+ TSyncSource = class
+ function GetClock(): real; virtual; abstract;
+ end;
+
+ TAudioProcessingStream = class;
+ TOnCloseHandler = procedure(Stream: TAudioProcessingStream);
+
+ TAudioProcessingStream = class
+ protected
+ OnCloseHandlers: array of TOnCloseHandler;
+
+ function GetLength(): real; virtual; abstract;
+ function GetPosition(): real; virtual; abstract;
+ procedure SetPosition(Time: real); virtual; abstract;
+ function GetLoop(): boolean; virtual; abstract;
+ procedure SetLoop(Enabled: boolean); virtual; abstract;
+
+ procedure PerformOnClose();
+ public
+ function GetAudioFormatInfo(): TAudioFormatInfo; virtual; abstract;
+ procedure Close(); virtual; abstract;
+
+ (**
+ * Adds a new OnClose action handler.
+ * The handlers are performed in the order they were added.
+ * If not stated explicitely, member-variables might have been invalidated
+ * already. So do not use any member (variable/method/...) if you are not
+ * sure it is valid.
+ *)
+ procedure AddOnCloseHandler(Handler: TOnCloseHandler);
+
+ property Length: real read GetLength;
+ property Position: real read GetPosition write SetPosition;
+ property Loop: boolean read GetLoop write SetLoop;
+ end;
+
+ TAudioSourceStream = class(TAudioProcessingStream)
+ protected
+ function IsEOF(): boolean; virtual; abstract;
+ function IsError(): boolean; virtual; abstract;
+ public
+ function ReadData(Buffer: PChar; BufferSize: integer): integer; virtual; abstract;
+
+ property EOF: boolean read IsEOF;
+ property Error: boolean read IsError;
+ end;
+
+ (*
+ * State-Chart for playback-stream state transitions
+ * []: Transition, (): State
+ *
+ * /---[Play/FadeIn]--->-\ /-------[Pause]----->-\
+ * -[Create]->(Stop) (Play) (Pause)
+ * \\-<-[Stop/EOF*/Error]-/ \-<---[Play/FadeIn]--//
+ * \-<------------[Stop/EOF*/Error]--------------/
+ *
+ * *: if not looped, otherwise stream is repeated
+ * Note: SetPosition() does not change the state.
+ *)
+
+ TAudioPlaybackStream = class(TAudioProcessingStream)
+ protected
+ SyncSource: TSyncSource;
+ AvgSyncDiff: double;
+ SourceStream: TAudioSourceStream;
+
+ function GetLatency(): double; virtual; abstract;
+ function GetStatus(): TStreamStatus; virtual; abstract;
+ function GetVolume(): single; virtual; abstract;
+ procedure SetVolume(Volume: single); virtual; abstract;
+ function Synchronize(BufferSize: integer; FormatInfo: TAudioFormatInfo): integer;
+ procedure FillBufferWithFrame(Buffer: PChar; BufferSize: integer; Frame: PChar; FrameSize: integer);
+ public
+ (**
+ * Opens a SourceStream for playback.
+ * Note that the caller (not the TAudioPlaybackStream) is responsible to
+ * free the SourceStream after the Playback-Stream is closed.
+ * You may use an OnClose-handler to achieve this. GetSourceStream()
+ * guarantees to deliver this method's SourceStream parameter to
+ * the OnClose-handler. Freeing SourceStream at OnClose is allowed.
+ *)
+ function Open(SourceStream: TAudioSourceStream): boolean; virtual; abstract;
+
+ procedure Play(); virtual; abstract;
+ procedure Pause(); virtual; abstract;
+ procedure Stop(); virtual; abstract;
+ procedure FadeIn(Time: real; TargetVolume: single); virtual; abstract;
+
+ procedure GetFFTData(var data: TFFTData); virtual; abstract;
+ function GetPCMData(var data: TPCMData): Cardinal; virtual; abstract;
+
+ procedure AddSoundEffect(Effect: TSoundEffect); virtual; abstract;
+ procedure RemoveSoundEffect(Effect: TSoundEffect); virtual; abstract;
+
+ procedure SetSyncSource(SyncSource: TSyncSource);
+ function GetSourceStream(): TAudioSourceStream;
+
+ property Status: TStreamStatus read GetStatus;
+ property Volume: single read GetVolume write SetVolume;
+ end;
+
+ TAudioDecodeStream = class(TAudioSourceStream)
+ end;
+
+ TAudioVoiceStream = class(TAudioSourceStream)
+ protected
+ FormatInfo: TAudioFormatInfo;
+ ChannelMap: integer;
+ public
+ destructor Destroy; override;
+
+ function Open(ChannelMap: integer; FormatInfo: TAudioFormatInfo): boolean; virtual;
+ procedure Close(); override;
+
+ procedure WriteData(Buffer: PChar; BufferSize: integer); virtual; abstract;
+ function GetAudioFormatInfo(): TAudioFormatInfo; override;
+
+ function GetLength(): real; override;
+ function GetPosition(): real; override;
+ procedure SetPosition(Time: real); override;
+ function GetLoop(): boolean; override;
+ procedure SetLoop(Enabled: boolean); override;
+ end;
+
+type
+ // soundcard output-devices information
+ TAudioOutputDevice = class
+ public
+ Name: string; // soundcard name
+ end;
+ TAudioOutputDeviceList = array of TAudioOutputDevice;
+
+type
+ IGenericPlayback = Interface
+ ['{63A5EBC3-3F4D-4F23-8DFB-B5165FCE33DD}']
+ function GetName: String;
+
+ function Open(const Filename: string): boolean; // true if succeed
+ procedure Close;
+
+ procedure Play;
+ procedure Pause;
+ procedure Stop;
+
+ procedure SetPosition(Time: real);
+ function GetPosition: real;
+
+ property Position: real read GetPosition write SetPosition;
+ end;
+
+ IVideoPlayback = Interface( IGenericPlayback )
+ ['{3574C40C-28AE-4201-B3D1-3D1F0759B131}']
+ function Init(): boolean;
+ function Finalize: boolean;
+
+ procedure GetFrame(Time: Extended); // WANT TO RENAME THESE TO BE MORE GENERIC
+ procedure DrawGL(Screen: integer); // WANT TO RENAME THESE TO BE MORE GENERIC
+
+ end;
+
+ IVideoVisualization = Interface( IVideoPlayback )
+ ['{5AC17D60-B34D-478D-B632-EB00D4078017}']
+ end;
+
+ IAudioPlayback = Interface( IGenericPlayback )
+ ['{E4AE0B40-3C21-4DC5-847C-20A87E0DFB96}']
+ function InitializePlayback: boolean;
+ function FinalizePlayback: boolean;
+
+ function GetOutputDeviceList(): TAudioOutputDeviceList;
+
+ procedure SetAppVolume(Volume: single);
+ procedure SetVolume(Volume: single);
+ procedure SetLoop(Enabled: boolean);
+
+ procedure FadeIn(Time: real; TargetVolume: single);
+ procedure SetSyncSource(SyncSource: TSyncSource);
+
+ procedure Rewind;
+ function Finished: boolean;
+ function Length: real;
+
+ // Sounds
+ // TODO:
+ // add a TMediaDummyPlaybackStream implementation that will
+ // be used by the TSoundLib whenever OpenSound() fails, so checking for
+ // nil-pointers is not neccessary anymore.
+ // PlaySound/StopSound will be removed then, OpenSound will be renamed to
+ // CreateSound.
+ function OpenSound(const Filename: String): TAudioPlaybackStream;
+ procedure PlaySound(Stream: TAudioPlaybackStream);
+ procedure StopSound(Stream: TAudioPlaybackStream);
+
+ // Equalizer
+ procedure GetFFTData(var Data: TFFTData);
+
+ // Interface for Visualizer
+ function GetPCMData(var Data: TPCMData): Cardinal;
+
+ function CreateVoiceStream(ChannelMap: integer; FormatInfo: TAudioFormatInfo): TAudioVoiceStream;
+ end;
+
+ IGenericDecoder = Interface
+ ['{557B0E9A-604D-47E4-B826-13769F3E10B7}']
+ function GetName(): String;
+ function InitializeDecoder(): boolean;
+ function FinalizeDecoder(): boolean;
+ //function IsSupported(const Filename: string): boolean;
+ end;
+
+ (*
+ IVideoDecoder = Interface( IGenericDecoder )
+ ['{2F184B2B-FE69-44D5-9031-0A2462391DCA}']
+ function Open(const Filename: string): TVideoDecodeStream;
+ end;
+ *)
+
+ IAudioDecoder = Interface( IGenericDecoder )
+ ['{AB47B1B6-2AA9-4410-BF8C-EC79561B5478}']
+ function Open(const Filename: string): TAudioDecodeStream;
+ end;
+
+ IAudioInput = Interface
+ ['{A5C8DA92-2A0C-4AB2-849B-2F7448C6003A}']
+ function GetName: String;
+ function InitializeRecord: boolean;
+ function FinalizeRecord(): boolean;
+
+ procedure CaptureStart;
+ procedure CaptureStop;
+ end;
+
+type
+ TAudioConverter = class
+ protected
+ fSrcFormatInfo: TAudioFormatInfo;
+ fDstFormatInfo: TAudioFormatInfo;
+ public
+ function Init(SrcFormatInfo: TAudioFormatInfo; DstFormatInfo: TAudioFormatInfo): boolean; virtual;
+ destructor Destroy(); override;
+
+ (**
+ * Converts the InputBuffer and stores the result in OutputBuffer.
+ * If the result is not -1, InputSize will be set to the actual number of
+ * input-buffer bytes used.
+ * Returns the number of bytes written to the output-buffer or -1 if an error occured.
+ *)
+ function Convert(InputBuffer: PChar; OutputBuffer: PChar; var InputSize: integer): integer; virtual; abstract;
+
+ (**
+ * Destination/Source size ratio
+ *)
+ function GetRatio(): double; virtual; abstract;
+
+ function GetOutputBufferSize(InputSize: integer): integer; virtual; abstract;
+ property SrcFormatInfo: TAudioFormatInfo read fSrcFormatInfo;
+ property DstFormatInfo: TAudioFormatInfo read fDstFormatInfo;
+ end;
+
+(* TODO
+const
+ SOUNDID_START = 0;
+ SOUNDID_BACK = 1;
+ SOUNDID_SWOOSH = 2;
+ SOUNDID_CHANGE = 3;
+ SOUNDID_OPTION = 4;
+ SOUNDID_CLICK = 5;
+ LAST_SOUNDID = SOUNDID_CLICK;
+
+ BaseSoundFilenames: array[0..LAST_SOUNDID] of string = (
+ '%SOUNDPATH%/Common start.mp3', // Start
+ '%SOUNDPATH%/Common back.mp3', // Back
+ '%SOUNDPATH%/menu swoosh.mp3', // Swoosh
+ '%SOUNDPATH%/select music change music 50.mp3', // Change
+ '%SOUNDPATH%/option change col.mp3', // Option
+ '%SOUNDPATH%/rimshot022b.mp3' // Click
+ {
+ '%SOUNDPATH%/bassdrumhard076b.mp3', // Drum (unused)
+ '%SOUNDPATH%/hihatclosed068b.mp3', // Hihat (unused)
+ '%SOUNDPATH%/claps050b.mp3', // Clap (unused)
+ '%SOUNDPATH%/Shuffle.mp3' // Shuffle (unused)
+ }
+ );
+*)
+
+type
+ TSoundLibrary = class
+ private
+ // TODO
+ //Sounds: array of TAudioPlaybackStream;
+ public
+ // TODO: move sounds to the private section
+ // and provide IDs instead.
+ Start: TAudioPlaybackStream;
+ Back: TAudioPlaybackStream;
+ Swoosh: TAudioPlaybackStream;
+ Change: TAudioPlaybackStream;
+ Option: TAudioPlaybackStream;
+ Click: TAudioPlaybackStream;
+ BGMusic: TAudioPlaybackStream;
+
+ constructor Create();
+ destructor Destroy(); override;
+
+ procedure LoadSounds();
+ procedure UnloadSounds();
+
+ procedure StartBgMusic();
+ procedure PauseBgMusic();
+ // TODO
+ //function AddSound(Filename: string): integer;
+ //procedure RemoveSound(ID: integer);
+ //function GetSound(ID: integer): TAudioPlaybackStream;
+ //property Sound[ID: integer]: TAudioPlaybackStream read GetSound; default;
+ end;
+
+var
+ // TODO: JB --- THESE SHOULD NOT BE GLOBAL
+ Lines: array of TLines;
+ LyricsState: TLyricsState;
+ SoundLib: TSoundLibrary;
+
+
+procedure InitializeSound;
+procedure InitializeVideo;
+procedure FinalizeMedia;
+
+function Visualization(): IVideoPlayback;
+function VideoPlayback(): IVideoPlayback;
+function AudioPlayback(): IAudioPlayback;
+function AudioInput(): IAudioInput;
+function AudioDecoders(): TInterfaceList;
+
+function MediaManager: TInterfaceList;
+
+procedure DumpMediaInterfaces();
+
+implementation
+
+uses
+ sysutils,
+ math,
+ UIni,
+ UMain,
+ UCommandLine,
+ URecord,
+ ULog;
+
+var
+ DefaultVideoPlayback : IVideoPlayback;
+ DefaultVisualization : IVideoPlayback;
+ DefaultAudioPlayback : IAudioPlayback;
+ DefaultAudioInput : IAudioInput;
+ AudioDecoderList : TInterfaceList;
+ MediaInterfaceList : TInterfaceList;
+
+
+constructor TAudioFormatInfo.Create(Channels: byte; SampleRate: double; Format: TAudioSampleFormat);
+begin
+ inherited Create();
+ fChannels := Channels;
+ fSampleRate := SampleRate;
+ fFormat := Format;
+ UpdateFrameSize();
+end;
+
+procedure TAudioFormatInfo.SetChannels(Channels: byte);
+begin
+ fChannels := Channels;
+ UpdateFrameSize();
+end;
+
+procedure TAudioFormatInfo.SetFormat(Format: TAudioSampleFormat);
+begin
+ fFormat := Format;
+ UpdateFrameSize();
+end;
+
+function TAudioFormatInfo.GetBytesPerSec(): double;
+begin
+ Result := FrameSize * SampleRate;
+end;
+
+procedure TAudioFormatInfo.UpdateFrameSize();
+begin
+ fFrameSize := AudioSampleSize[fFormat] * fChannels;
+end;
+
+function TAudioFormatInfo.Copy(): TAudioFormatInfo;
+begin
+ Result := TAudioFormatInfo.Create(Self.Channels, Self.SampleRate, Self.Format);
+end;
+
+function TAudioFormatInfo.GetRatio(TargetInfo: TAudioFormatInfo): double;
+begin
+ Result := (TargetInfo.FrameSize / Self.FrameSize) *
+ (TargetInfo.SampleRate / Self.SampleRate)
+end;
+
+
+function MediaManager: TInterfaceList;
+begin
+ if (not assigned(MediaInterfaceList)) then
+ MediaInterfaceList := TInterfaceList.Create();
+ Result := MediaInterfaceList;
+end;
+
+function VideoPlayback(): IVideoPlayback;
+begin
+ Result := DefaultVideoPlayback;
+end;
+
+function Visualization(): IVideoPlayback;
+begin
+ Result := DefaultVisualization;
+end;
+
+function AudioPlayback(): IAudioPlayback;
+begin
+ Result := DefaultAudioPlayback;
+end;
+
+function AudioInput(): IAudioInput;
+begin
+ Result := DefaultAudioInput;
+end;
+
+function AudioDecoders(): TInterfaceList;
+begin
+ Result := AudioDecoderList;
+end;
+
+procedure FilterInterfaceList(const IID: TGUID; InList, OutList: TInterfaceList);
+var
+ i: integer;
+ obj: IInterface;
+begin
+ if (not assigned(OutList)) then
+ Exit;
+
+ OutList.Clear;
+ for i := 0 to InList.Count-1 do
+ begin
+ if assigned(InList[i]) then
+ begin
+ // add object to list if it implements the interface searched for
+ if (InList[i].QueryInterface(IID, obj) = 0) then
+ OutList.Add(obj);
+ end;
+ end;
+end;
+
+procedure InitializeSound;
+var
+ i: integer;
+ InterfaceList: TInterfaceList;
+ CurrentAudioDecoder: IAudioDecoder;
+ CurrentAudioPlayback: IAudioPlayback;
+ CurrentAudioInput: IAudioInput;
+begin
+ // create a temporary list for interface enumeration
+ InterfaceList := TInterfaceList.Create();
+
+ // initialize all audio-decoders first
+ FilterInterfaceList(IAudioDecoder, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ begin
+ CurrentAudioDecoder := IAudioDecoder(InterfaceList[i]);
+ if (not CurrentAudioDecoder.InitializeDecoder()) then
+ begin
+ Log.LogError('Initialize failed, Removing - '+ CurrentAudioDecoder.GetName);
+ MediaManager.Remove(CurrentAudioDecoder);
+ end;
+ end;
+
+ // create and setup decoder-list (see AudioDecoders())
+ AudioDecoderList := TInterfaceList.Create;
+ FilterInterfaceList(IAudioDecoder, MediaManager, AudioDecoders);
+
+ // find and initialize playback interface
+ DefaultAudioPlayback := nil;
+ FilterInterfaceList(IAudioPlayback, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ begin
+ CurrentAudioPlayback := IAudioPlayback(InterfaceList[i]);
+ if (CurrentAudioPlayback.InitializePlayback()) then
+ begin
+ DefaultAudioPlayback := CurrentAudioPlayback;
+ break;
+ end;
+ Log.LogError('Initialize failed, Removing - '+ CurrentAudioPlayback.GetName);
+ MediaManager.Remove(CurrentAudioPlayback);
+ end;
+
+ // find and initialize input interface
+ DefaultAudioInput := nil;
+ FilterInterfaceList(IAudioInput, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ begin
+ CurrentAudioInput := IAudioInput(InterfaceList[i]);
+ if (CurrentAudioInput.InitializeRecord()) then
+ begin
+ DefaultAudioInput := CurrentAudioInput;
+ break;
+ end;
+ Log.LogError('Initialize failed, Removing - '+ CurrentAudioInput.GetName);
+ MediaManager.Remove(CurrentAudioInput);
+ end;
+
+ InterfaceList.Free;
+
+ // Update input-device list with registered devices
+ AudioInputProcessor.UpdateInputDeviceConfig();
+
+ // Load in-game sounds
+ SoundLib := TSoundLibrary.Create;
+end;
+
+procedure InitializeVideo();
+var
+ i: integer;
+ InterfaceList: TInterfaceList;
+ VideoInterface: IVideoPlayback;
+ VisualInterface: IVideoVisualization;
+begin
+ InterfaceList := TInterfaceList.Create;
+
+ // initialize and set video-playback singleton
+ DefaultVideoPlayback := nil;
+ FilterInterfaceList(IVideoPlayback, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ begin
+ VideoInterface := IVideoPlayback(InterfaceList[i]);
+ if (VideoInterface.Init()) then
+ begin
+ DefaultVideoPlayback := VideoInterface;
+ break;
+ end;
+ Log.LogError('Initialize failed, Removing - '+ VideoInterface.GetName);
+ MediaManager.Remove(VideoInterface);
+ end;
+
+ // initialize and set visualization singleton
+ DefaultVisualization := nil;
+ FilterInterfaceList(IVideoVisualization, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ begin
+ VisualInterface := IVideoVisualization(InterfaceList[i]);
+ if (VisualInterface.Init()) then
+ begin
+ DefaultVisualization := VisualInterface;
+ break;
+ end;
+ Log.LogError('Initialize failed, Removing - '+ VisualInterface.GetName);
+ MediaManager.Remove(VisualInterface);
+ end;
+
+ InterfaceList.Free;
+
+ // now that we have all interfaces, we can dump them
+ // TODO: move this to another place
+ if FindCmdLineSwitch( cMediaInterfaces ) then
+ begin
+ DumpMediaInterfaces();
+ halt;
+ end;
+end;
+
+procedure UnloadMediaModules;
+var
+ i: integer;
+ InterfaceList: TInterfaceList;
+begin
+ FreeAndNil(AudioDecoderList);
+ DefaultAudioPlayback := nil;
+ DefaultAudioInput := nil;
+ DefaultVideoPlayback := nil;
+ DefaultVisualization := nil;
+
+ // create temporary interface list
+ InterfaceList := TInterfaceList.Create();
+
+ // finalize audio playback interfaces (should be done before the decoders)
+ FilterInterfaceList(IAudioPlayback, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ IAudioPlayback(InterfaceList[i]).FinalizePlayback();
+
+ // finalize audio input interfaces
+ FilterInterfaceList(IAudioInput, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ IAudioInput(InterfaceList[i]).FinalizeRecord();
+
+ // finalize audio decoder interfaces
+ FilterInterfaceList(IAudioDecoder, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ IAudioDecoder(InterfaceList[i]).FinalizeDecoder();
+
+ // finalize video interfaces
+ FilterInterfaceList(IVideoPlayback, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ IVideoPlayback(InterfaceList[i]).Finalize();
+
+ // finalize audio decoder interfaces
+ FilterInterfaceList(IVideoVisualization, MediaManager, InterfaceList);
+ for i := 0 to InterfaceList.Count-1 do
+ IVideoVisualization(InterfaceList[i]).Finalize();
+
+ InterfaceList.Free;
+
+ // finally free interfaces (by removing all references to them)
+ FreeAndNil(MediaInterfaceList);
+end;
+
+procedure FinalizeMedia;
+begin
+ // stop, close and free sounds
+ SoundLib.Free;
+
+ // stop and close music stream
+ if (AudioPlayback <> nil) then
+ AudioPlayback.Close;
+
+ // stop any active captures
+ if (AudioInput <> nil) then
+ AudioInput.CaptureStop;
+
+ if (VideoPlayback <> nil) then
+ VideoPlayback.Close;
+
+ if (Visualization <> nil) then
+ Visualization.Close;
+
+ UnloadMediaModules();
+end;
+
+procedure DumpMediaInterfaces();
+begin
+ writeln( '' );
+ writeln( '--------------------------------------------------------------' );
+ writeln( ' In-use Media Interfaces ' );
+ writeln( '--------------------------------------------------------------' );
+ writeln( 'Registered Audio Playback Interface : ' + AudioPlayback.GetName );
+ writeln( 'Registered Audio Input Interface : ' + AudioInput.GetName );
+ writeln( 'Registered Video Playback Interface : ' + VideoPlayback.GetName );
+ writeln( 'Registered Visualization Interface : ' + Visualization.GetName );
+ writeln( '--------------------------------------------------------------' );
+ writeln( '' );
+end;
+
+
+{ TSoundLibrary }
+
+constructor TSoundLibrary.Create();
+begin
+ inherited;
+ LoadSounds();
+end;
+
+destructor TSoundLibrary.Destroy();
+begin
+ UnloadSounds();
+ inherited;
+end;
+
+procedure TSoundLibrary.LoadSounds();
+begin
+ UnloadSounds();
+
+ Start := AudioPlayback.OpenSound(SoundPath + 'Common start.mp3');
+ Back := AudioPlayback.OpenSound(SoundPath + 'Common back.mp3');
+ Swoosh := AudioPlayback.OpenSound(SoundPath + 'menu swoosh.mp3');
+ Change := AudioPlayback.OpenSound(SoundPath + 'select music change music 50.mp3');
+ Option := AudioPlayback.OpenSound(SoundPath + 'option change col.mp3');
+ Click := AudioPlayback.OpenSound(SoundPath + 'rimshot022b.mp3');
+
+ BGMusic := AudioPlayback.OpenSound(SoundPath + 'Bebeto_-_Loop010.mp3');
+
+ if (BGMusic <> nil) then
+ BGMusic.Loop := True;
+end;
+
+procedure TSoundLibrary.UnloadSounds();
+begin
+ FreeAndNil(Start);
+ FreeAndNil(Back);
+ FreeAndNil(Swoosh);
+ FreeAndNil(Change);
+ FreeAndNil(Option);
+ FreeAndNil(Click);
+ FreeAndNil(BGMusic);
+end;
+
+(* TODO
+function TSoundLibrary.GetSound(ID: integer): TAudioPlaybackStream;
+begin
+ if ((ID >= 0) and (ID < Length(Sounds))) then
+ Result := Sounds[ID]
+ else
+ Result := nil;
+end;
+*)
+
+procedure TSoundLibrary.StartBgMusic();
+begin
+ if (TBackgroundMusicOption(Ini.BackgroundMusicOption) = bmoOn) and
+ (Soundlib.BGMusic <> nil) and not (Soundlib.BGMusic.Status = ssPlaying) then
+ begin
+ AudioPlayback.PlaySound(Soundlib.BGMusic);
+ end;
+end;
+
+procedure TSoundLibrary.PauseBgMusic();
+begin
+ If (Soundlib.BGMusic <> nil) then
+ begin
+ Soundlib.BGMusic.Pause;
+ end;
+end;
+
+{ TVoiceRemoval }
+
+procedure TVoiceRemoval.Callback(Buffer: PChar; BufSize: integer);
+var
+ FrameIndex, FrameSize: integer;
+ Value: integer;
+ Sample: PPCMStereoSample;
+begin
+ FrameSize := 2 * SizeOf(SmallInt);
+ for FrameIndex := 0 to (BufSize div FrameSize)-1 do
+ begin
+ Sample := PPCMStereoSample(Buffer);
+ // channel difference
+ Value := Sample[0] - Sample[1];
+ // clip
+ if (Value > High(SmallInt)) then
+ Value := High(SmallInt)
+ else if (Value < Low(SmallInt)) then
+ Value := Low(SmallInt);
+ // assign result
+ Sample[0] := Value;
+ Sample[1] := Value;
+ // increase to next frame
+ Inc(Buffer, FrameSize);
+ end;
+end;
+
+
+{ TVoiceRemoval }
+
+constructor TLyricsState.Create();
+begin
+ // create a triggered timer, so we can Pause() it, set the time
+ // and Resume() it afterwards for better synching.
+ Timer := TRelativeTimer.Create(true);
+
+ // reset state
+ Reset();
+end;
+
+procedure TLyricsState.Pause();
+begin
+ Timer.Pause();
+end;
+
+procedure TLyricsState.Resume();
+begin
+ Timer.Resume();
+end;
+
+procedure TLyricsState.SetCurrentTime(Time: real);
+begin
+ // do not start the timer (if not started already),
+ // after setting the current time
+ Timer.SetTime(Time, false);
+end;
+
+function TLyricsState.GetCurrentTime(): real;
+begin
+ Result := Timer.GetTime();
+end;
+
+(**
+ * Resets the timer and state of the lyrics.
+ * The timer will be stopped afterwards so you have to call Resume()
+ * to start the lyrics timer.
+ *)
+procedure TLyricsState.Reset();
+begin
+ Pause();
+ SetCurrentTime(0);
+
+ StartTime := 0;
+ TotalTime := 0;
+
+ OldBeat := -1;
+ MidBeat := -1;
+ CurrentBeat := -1;
+
+ OldBeatC := -1;
+ MidBeatC := -1;
+ CurrentBeatC := -1;
+
+ OldBeatD := -1;
+ MidBeatD := -1;
+ CurrentBeatD := -1;
+end;
+
+(**
+ * Updates the beat information (CurrentBeat/MidBeat/...) according to the
+ * current lyric time.
+ *)
+procedure TLyricsState.UpdateBeats();
+var
+ CurLyricsTime: real;
+begin
+ CurLyricsTime := GetCurrentTime();
+
+ OldBeat := CurrentBeat;
+ MidBeat := GetMidBeat(CurLyricsTime - StartTime / 1000);
+ CurrentBeat := Floor(MidBeat);
+
+ OldBeatC := CurrentBeatC;
+ MidBeatC := GetMidBeat(CurLyricsTime - StartTime / 1000);
+ CurrentBeatC := Floor(MidBeatC);
+
+ OldBeatD := CurrentBeatD;
+ // MidBeatD = MidBeat with additional GAP
+ MidBeatD := -0.5 + GetMidBeat(CurLyricsTime - (StartTime + 120 + 20) / 1000);
+ CurrentBeatD := Floor(MidBeatD);
+end;
+
+
+{ TAudioConverter }
+
+function TAudioConverter.Init(SrcFormatInfo: TAudioFormatInfo; DstFormatInfo: TAudioFormatInfo): boolean;
+begin
+ fSrcFormatInfo := SrcFormatInfo.Copy();
+ fDstFormatInfo := DstFormatInfo.Copy();
+ Result := true;
+end;
+
+destructor TAudioConverter.Destroy();
+begin
+ FreeAndNil(fSrcFormatInfo);
+ FreeAndNil(fDstFormatInfo);
+end;
+
+
+{ TAudioProcessingStream }
+
+procedure TAudioProcessingStream.AddOnCloseHandler(Handler: TOnCloseHandler);
+begin
+ if (@Handler <> nil) then
+ begin
+ SetLength(OnCloseHandlers, System.Length(OnCloseHandlers)+1);
+ OnCloseHandlers[High(OnCloseHandlers)] := @Handler;
+ end;
+end;
+
+procedure TAudioProcessingStream.PerformOnClose();
+var i: integer;
+begin
+ for i := 0 to High(OnCloseHandlers) do
+ begin
+ OnCloseHandlers[i](Self);
+ end;
+end;
+
+
+{ TAudioPlaybackStream }
+
+function TAudioPlaybackStream.GetSourceStream(): TAudioSourceStream;
+begin
+ Result := SourceStream;
+end;
+
+procedure TAudioPlaybackStream.SetSyncSource(SyncSource: TSyncSource);
+begin
+ Self.SyncSource := SyncSource;
+ AvgSyncDiff := -1;
+end;
+
+(*
+ * Results an adjusted size of the input buffer size to keep the stream in sync
+ * with the SyncSource. If no SyncSource was assigned to this stream, the
+ * input buffer size will be returned, so this method will have no effect.
+ *
+ * These are the possible cases:
+ * - Result > BufferSize: stream is behind the sync-source (stream is too slow),
+ * (Result-BufferSize) bytes of the buffer must be skipped.
+ * - Result = BufferSize: stream is in sync,
+ * there is nothing to do.
+ * - Result < BufferSize: stream is ahead of the sync-source (stream is too fast),
+ * (BufferSize-Result) bytes of the buffer must be padded.
+ *)
+function TAudioPlaybackStream.Synchronize(BufferSize: integer; FormatInfo: TAudioFormatInfo): integer;
+var
+ TimeDiff: double;
+ TimeCorrectionFactor: double;
+const
+ AVG_HISTORY_FACTOR = 0.9;
+ SYNC_THRESHOLD = 0.045;
+ MAX_SYNC_DIFF_TIME = 0.002;
+begin
+ Result := BufferSize;
+
+ if (not assigned(SyncSource)) then
+ Exit;
+
+ if (BufferSize <= 0) then
+ Exit;
+
+ // difference between sync-source and stream position
+ // (negative if the music-stream's position is ahead of the master clock)
+ TimeDiff := SyncSource.GetClock() - (Position - GetLatency());
+
+ // calculate average time difference (some sort of weighted mean).
+ // The bigger AVG_HISTORY_FACTOR is, the smoother is the average diff.
+ // This means that older diffs are weighted more with a higher history factor
+ // than with a lower. Do not use a too low history factor. FFmpeg produces
+ // very instable timestamps (pts) for ogg due to some bugs. They may differ
+ // +-50ms from the real stream position. Without filtering those glitches we
+ // would synch without any need, resulting in ugly plopping sounds.
+ if (AvgSyncDiff = -1) then
+ AvgSyncDiff := TimeDiff
+ else
+ AvgSyncDiff := TimeDiff * (1-AVG_HISTORY_FACTOR) +
+ AvgSyncDiff * AVG_HISTORY_FACTOR;
+
+ // check if sync needed
+ if (Abs(AvgSyncDiff) >= SYNC_THRESHOLD) then
+ begin
+ // TODO: use SetPosition if diff is too large (>5s)
+ if (TimeDiff < 1) then
+ TimeCorrectionFactor := Sign(TimeDiff)*TimeDiff*TimeDiff
+ else
+ TimeCorrectionFactor := TimeDiff;
+
+ // calculate adapted buffer size
+ // reduce size of data to fetch if music is ahead, increase otherwise
+ Result := BufferSize + Round(TimeCorrectionFactor * FormatInfo.SampleRate) * FormatInfo.FrameSize;
+ if (Result < 0) then
+ Result := 0;
+
+ // reset average
+ AvgSyncDiff := -1;
+ end;
+
+ (*
+ DebugWriteln('Diff: ' + floattostrf(TimeDiff, ffFixed, 15, 3) +
+ '| SyS: ' + floattostrf(SyncSource.GetClock(), ffFixed, 15, 3) +
+ '| Pos: ' + floattostrf(Position, ffFixed, 15, 3) +
+ '| Avg: ' + floattostrf(AvgSyncDiff, ffFixed, 15, 3));
+ *)
+end;
+
+(*
+ * Fills a buffer with copies of the given frame or with 0 if frame.
+ *)
+procedure TAudioPlaybackStream.FillBufferWithFrame(Buffer: PChar; BufferSize: integer; Frame: PChar; FrameSize: integer);
+var
+ i: integer;
+ FrameCopyCount: integer;
+begin
+ // the buffer must at least contain place for one copy of the frame.
+ if ((Buffer = nil) or (BufferSize <= 0) or (BufferSize < FrameSize)) then
+ Exit;
+
+ // no valid frame -> fill with 0
+ if ((Frame = nil) or (FrameSize <= 0)) then
+ begin
+ FillChar(Buffer[0], BufferSize, 0);
+ Exit;
+ end;
+
+ // number of frames to copy
+ FrameCopyCount := BufferSize div FrameSize;
+ // insert as many copies of frame into the buffer as possible
+ for i := 0 to FrameCopyCount-1 do
+ Move(Frame[0], Buffer[i*FrameSize], FrameSize);
+end;
+
+{ TAudioVoiceStream }
+
+function TAudioVoiceStream.Open(ChannelMap: integer; FormatInfo: TAudioFormatInfo): boolean;
+begin
+ Self.ChannelMap := ChannelMap;
+ Self.FormatInfo := FormatInfo.Copy();
+ // a voice stream is always mono, reassure the the format is correct
+ Self.FormatInfo.Channels := 1;
+ Result := true;
+end;
+
+destructor TAudioVoiceStream.Destroy;
+begin
+ Close();
+ inherited;
+end;
+
+procedure TAudioVoiceStream.Close();
+begin
+ PerformOnClose();
+ FreeAndNil(FormatInfo);
+end;
+
+function TAudioVoiceStream.GetAudioFormatInfo(): TAudioFormatInfo;
+begin
+ Result := FormatInfo;
+end;
+
+function TAudioVoiceStream.GetLength(): real;
+begin
+ Result := -1;
+end;
+
+function TAudioVoiceStream.GetPosition(): real;
+begin
+ Result := -1;
+end;
+
+procedure TAudioVoiceStream.SetPosition(Time: real);
+begin
+end;
+
+function TAudioVoiceStream.GetLoop(): boolean;
+begin
+ Result := false;
+end;
+
+procedure TAudioVoiceStream.SetLoop(Enabled: boolean);
+begin
+end;
+
+
+end.