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authorbrunzelchen <brunzelchen@b956fd51-792f-4845-bead-9b4dfca2ff2c>2009-12-09 18:35:28 +0000
committerbrunzelchen <brunzelchen@b956fd51-792f-4845-bead-9b4dfca2ff2c>2009-12-09 18:35:28 +0000
commite4f413fdcf003ac0ad20d145f61dd370994e79db (patch)
tree692f725464654d0a82cdb0888c28e4dd21d68517 /Medley/src/media/UAudioCore_Bass.pas
parentd267ce95e1743fad0d383d1d7fe51e9b8bf5b66f (diff)
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just a first experimental version
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/experimental@2011 b956fd51-792f-4845-bead-9b4dfca2ff2c
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diff --git a/Medley/src/media/UAudioCore_Bass.pas b/Medley/src/media/UAudioCore_Bass.pas
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+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit UAudioCore_Bass;
+
+interface
+
+{$IFDEF FPC}
+ {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+ Classes,
+ SysUtils,
+ UMusic,
+ bass; // (Note: DWORD is defined here)
+
+type
+ TAudioCore_Bass = class
+ public
+ constructor Create();
+ class function GetInstance(): TAudioCore_Bass;
+ function CheckVersion(): boolean;
+ function ErrorGetString(): string; overload;
+ function ErrorGetString(errCode: integer): string; overload;
+ function ConvertAudioFormatToBASSFlags(Format: TAudioSampleFormat; out Flags: DWORD): boolean;
+ function ConvertBASSFlagsToAudioFormat(Flags: DWORD; out Format: TAudioSampleFormat): boolean;
+ end;
+
+implementation
+
+uses
+ UMain,
+ ULog;
+
+const
+ // TODO: 2.4.2 is not ABI compatible with older versions
+ // as (BASS_RECORDINFO.driver was removed)
+ //BASS_MIN_REQUIRED_VERSION = $02040201;
+ BASS_MIN_REQUIRED_VERSION = $02000000;
+
+var
+ Instance: TAudioCore_Bass;
+
+constructor TAudioCore_Bass.Create();
+begin
+ inherited;
+end;
+
+class function TAudioCore_Bass.GetInstance(): TAudioCore_Bass;
+begin
+ if (not Assigned(Instance)) then
+ Instance := TAudioCore_Bass.Create();
+ Result := Instance;
+end;
+
+function TAudioCore_Bass.CheckVersion(): boolean;
+begin
+ Result := BASS_GetVersion() >= BASS_MIN_REQUIRED_VERSION;
+end;
+
+function TAudioCore_Bass.ErrorGetString(): string;
+begin
+ Result := ErrorGetString(BASS_ErrorGetCode());
+end;
+
+function TAudioCore_Bass.ErrorGetString(errCode: integer): string;
+begin
+ case errCode of
+ BASS_OK: result := 'No error';
+ BASS_ERROR_MEM: result := 'Insufficient memory';
+ BASS_ERROR_FILEOPEN: result := 'File could not be opened';
+ BASS_ERROR_DRIVER: result := 'Device driver not available';
+ BASS_ERROR_BUFLOST: result := 'Buffer lost';
+ BASS_ERROR_HANDLE: result := 'Invalid Handle';
+ BASS_ERROR_FORMAT: result := 'Sample-Format not supported';
+ BASS_ERROR_POSITION: result := 'Illegal position';
+ BASS_ERROR_INIT: result := 'BASS_Init has not been successfully called';
+ BASS_ERROR_START: result := 'Paused/stopped';
+ BASS_ERROR_ALREADY: result := 'Already created/used';
+ BASS_ERROR_NOCHAN: result := 'No free channels';
+ BASS_ERROR_ILLTYPE: result := 'Type is invalid';
+ BASS_ERROR_ILLPARAM: result := 'Illegal parameter';
+ BASS_ERROR_NO3D: result := 'No 3D support';
+ BASS_ERROR_NOEAX: result := 'No EAX support';
+ BASS_ERROR_DEVICE: result := 'Invalid device number';
+ BASS_ERROR_NOPLAY: result := 'Channel not playing';
+ BASS_ERROR_FREQ: result := 'Freq out of range';
+ BASS_ERROR_NOTFILE: result := 'Not a file stream';
+ BASS_ERROR_NOHW: result := 'No hardware support';
+ BASS_ERROR_EMPTY: result := 'Is empty';
+ BASS_ERROR_NONET: result := 'Network unavailable';
+ BASS_ERROR_CREATE: result := 'Creation error';
+ BASS_ERROR_NOFX: result := 'DX8 effects unavailable';
+ BASS_ERROR_NOTAVAIL: result := 'Not available';
+ BASS_ERROR_DECODE: result := 'Is a decoding channel';
+ BASS_ERROR_DX: result := 'Insufficient version of DirectX';
+ BASS_ERROR_TIMEOUT: result := 'Timeout';
+ BASS_ERROR_FILEFORM: result := 'File-Format not recognised/supported';
+ BASS_ERROR_SPEAKER: result := 'Requested speaker(s) not support';
+ BASS_ERROR_VERSION: result := 'Version error';
+ BASS_ERROR_CODEC: result := 'Codec not available/supported';
+ BASS_ERROR_ENDED: result := 'The channel/file has ended';
+ BASS_ERROR_UNKNOWN: result := 'Unknown error';
+ else result := 'Unknown error';
+ end;
+end;
+
+function TAudioCore_Bass.ConvertAudioFormatToBASSFlags(Format: TAudioSampleFormat; out Flags: DWORD): boolean;
+begin
+ case Format of
+ asfS16: Flags := 0;
+ asfFloat: Flags := BASS_SAMPLE_FLOAT;
+ asfU8: Flags := BASS_SAMPLE_8BITS;
+ else begin
+ Result := false;
+ Exit;
+ end;
+ end;
+
+ Result := true;
+end;
+
+function TAudioCore_Bass.ConvertBASSFlagsToAudioFormat(Flags: DWORD; out Format: TAudioSampleFormat): boolean;
+begin
+ if ((Flags and BASS_SAMPLE_FLOAT) <> 0) then
+ Format := asfFloat
+ else if ((Flags and BASS_SAMPLE_8BITS) <> 0) then
+ Format := asfU8
+ else
+ Format := asfS16;
+
+ Result := true;
+end;
+
+end.