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authork-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-08-27 14:59:38 +0000
committerk-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c>2008-08-27 14:59:38 +0000
commit16a6e6801fde495b2782e2e04a0cf055ce1e1516 (patch)
tree0dcfda2e6848b6157bfb51bb3037d52b595a22ae /src/Classes/UAudioDecoder_Bass.pas
parent873f177f08dc7c4fe2d7e50bbe7709df98e238d3 (diff)
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rename Classes part1
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1307 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'src/Classes/UAudioDecoder_Bass.pas')
-rw-r--r--src/Classes/UAudioDecoder_Bass.pas242
1 files changed, 0 insertions, 242 deletions
diff --git a/src/Classes/UAudioDecoder_Bass.pas b/src/Classes/UAudioDecoder_Bass.pas
deleted file mode 100644
index dba1fde4..00000000
--- a/src/Classes/UAudioDecoder_Bass.pas
+++ /dev/null
@@ -1,242 +0,0 @@
-unit UAudioDecoder_Bass;
-
-interface
-
-{$IFDEF FPC}
- {$MODE Delphi}
-{$ENDIF}
-
-{$I switches.inc}
-
-implementation
-
-uses
- Classes,
- SysUtils,
- UMain,
- UMusic,
- UAudioCore_Bass,
- ULog,
- bass;
-
-type
- TBassDecodeStream = class(TAudioDecodeStream)
- private
- Handle: HSTREAM;
- FormatInfo : TAudioFormatInfo;
- Error: boolean;
- public
- constructor Create(Handle: HSTREAM);
- destructor Destroy(); override;
-
- procedure Close(); override;
-
- function GetLength(): real; override;
- function GetAudioFormatInfo(): TAudioFormatInfo; override;
- function GetPosition: real; override;
- procedure SetPosition(Time: real); override;
- function GetLoop(): boolean; override;
- procedure SetLoop(Enabled: boolean); override;
- function IsEOF(): boolean; override;
- function IsError(): boolean; override;
-
- function ReadData(Buffer: PChar; BufSize: integer): integer; override;
- end;
-
-type
- TAudioDecoder_Bass = class( TInterfacedObject, IAudioDecoder )
- public
- function GetName: string;
-
- function InitializeDecoder(): boolean;
- function FinalizeDecoder(): boolean;
- function Open(const Filename: string): TAudioDecodeStream;
- end;
-
-var
- BassCore: TAudioCore_Bass;
-
-
-{ TBassDecodeStream }
-
-constructor TBassDecodeStream.Create(Handle: HSTREAM);
-var
- ChannelInfo: BASS_CHANNELINFO;
- Format: TAudioSampleFormat;
-begin
- inherited Create();
- Self.Handle := Handle;
-
- // setup format info
- if (not BASS_ChannelGetInfo(Handle, ChannelInfo)) then
- begin
- raise Exception.Create('Failed to open decode-stream');
- end;
- BassCore.ConvertBASSFlagsToAudioFormat(ChannelInfo.flags, Format);
- FormatInfo := TAudioFormatInfo.Create(ChannelInfo.chans, ChannelInfo.freq, format);
-
- Error := false;
-end;
-
-destructor TBassDecodeStream.Destroy();
-begin
- Close();
- inherited;
-end;
-
-procedure TBassDecodeStream.Close();
-begin
- if (Handle <> 0) then
- begin
- BASS_StreamFree(Handle);
- Handle := 0;
- end;
- PerformOnClose();
- FreeAndNil(FormatInfo);
- Error := false;
-end;
-
-function TBassDecodeStream.GetAudioFormatInfo(): TAudioFormatInfo;
-begin
- Result := FormatInfo;
-end;
-
-function TBassDecodeStream.GetLength(): real;
-var
- bytes: QWORD;
-begin
- bytes := BASS_ChannelGetLength(Handle, BASS_POS_BYTE);
- Result := BASS_ChannelBytes2Seconds(Handle, bytes);
-end;
-
-function TBassDecodeStream.GetPosition: real;
-var
- bytes: QWORD;
-begin
- bytes := BASS_ChannelGetPosition(Handle, BASS_POS_BYTE);
- Result := BASS_ChannelBytes2Seconds(Handle, bytes);
-end;
-
-procedure TBassDecodeStream.SetPosition(Time: real);
-var
- bytes: QWORD;
-begin
- bytes := BASS_ChannelSeconds2Bytes(Handle, Time);
- BASS_ChannelSetPosition(Handle, bytes, BASS_POS_BYTE);
-end;
-
-function TBassDecodeStream.GetLoop(): boolean;
-var
- flags: DWORD;
-begin
- // retrieve channel flags
- flags := BASS_ChannelFlags(Handle, 0, 0);
- if (flags = DWORD(-1)) then
- begin
- Log.LogError('BASS_ChannelFlags: ' + BassCore.ErrorGetString(), 'TBassDecodeStream.GetLoop');
- Result := false;
- Exit;
- end;
- Result := (flags and BASS_SAMPLE_LOOP) <> 0;
-end;
-
-procedure TBassDecodeStream.SetLoop(Enabled: boolean);
-var
- flags: DWORD;
-begin
- // set/unset loop-flag
- if (Enabled) then
- flags := BASS_SAMPLE_LOOP
- else
- flags := 0;
-
- // set new flag-bits
- if (BASS_ChannelFlags(Handle, flags, BASS_SAMPLE_LOOP) = DWORD(-1)) then
- begin
- Log.LogError('BASS_ChannelFlags: ' + BassCore.ErrorGetString(), 'TBassDecodeStream.SetLoop');
- Exit;
- end;
-end;
-
-function TBassDecodeStream.IsEOF(): boolean;
-begin
- Result := (BASS_ChannelIsActive(Handle) = BASS_ACTIVE_STOPPED);
-end;
-
-function TBassDecodeStream.IsError(): boolean;
-begin
- Result := Error;
-end;
-
-function TBassDecodeStream.ReadData(Buffer: PChar; BufSize: integer): integer;
-begin
- Result := BASS_ChannelGetData(Handle, Buffer, BufSize);
- // check error state (do not handle EOF as error)
- if ((Result = -1) and (BASS_ErrorGetCode() <> BASS_ERROR_ENDED)) then
- Error := true
- else
- Error := false;
-end;
-
-
-{ TAudioDecoder_Bass }
-
-function TAudioDecoder_Bass.GetName: String;
-begin
- result := 'BASS_Decoder';
-end;
-
-function TAudioDecoder_Bass.InitializeDecoder(): boolean;
-begin
- BassCore := TAudioCore_Bass.GetInstance();
- Result := true;
-end;
-
-function TAudioDecoder_Bass.FinalizeDecoder(): boolean;
-begin
- Result := true;
-end;
-
-function TAudioDecoder_Bass.Open(const Filename: string): TAudioDecodeStream;
-var
- Stream: HSTREAM;
- ChannelInfo: BASS_CHANNELINFO;
- FileExt: string;
-begin
- Result := nil;
-
- // check if BASS was initialized
- // in case the decoder is not used with BASS playback, init the NO_SOUND device
- if ((integer(BASS_GetDevice) = -1) and (BASS_ErrorGetCode() = BASS_ERROR_INIT)) then
- BASS_Init(0, 44100, 0, 0, nil);
-
- // TODO: use BASS_STREAM_PRESCAN for accurate seeking in VBR-files?
- // disadvantage: seeking will slow down.
- Stream := BASS_StreamCreateFile(False, PChar(Filename), 0, 0, BASS_STREAM_DECODE);
- if (Stream = 0) then
- begin
- //Log.LogError(BassCore.ErrorGetString(), 'TAudioDecoder_Bass.Open');
- Exit;
- end;
-
- // check if BASS opened some erroneously recognized file-formats
- if BASS_ChannelGetInfo(Stream, channelInfo) then
- begin
- fileExt := ExtractFileExt(Filename);
- // BASS opens FLV-files (maybe others too) although it cannot handle them.
- // Setting BASS_CONFIG_VERIFY to the max. value (100000) does not help.
- if ((fileExt = '.flv') and (channelInfo.ctype = BASS_CTYPE_STREAM_MP1)) then
- begin
- BASS_StreamFree(Stream);
- Exit;
- end;
- end;
-
- Result := TBassDecodeStream.Create(Stream);
-end;
-
-
-initialization
- MediaManager.Add(TAudioDecoder_Bass.Create);
-
-end.