MP3 Info & Convert, Version 1.0 (alt)
Hinweis: dies ist nicht die neueste Version!
Datei: micsave.pas
{ micsave.pas This file is part of "Flocke's MP3 Info & Convert". Version 1.0 - Always find the most current version at http://flocke.vssd.de/prog/apps/pascal/mp3conv/ Copyright (C) 2005 Volker Siebert, Germany All rights reserved. Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. } unit micsave; interface uses Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, Dialogs, StdCtrls, ExtCtrls; const WM_CHECKWINDOWPOS = WM_USER + 13; type TfrmConvert = class(TForm) rbtWav: TRadioButton; bvlWav: TBevel; lblWavFile: TLabel; edtWavFile: TEdit; btnWavFile: TButton; rbtRes: TRadioButton; bvlRes: TBevel; lblResFile: TLabel; edtResFile: TEdit; btnResFile: TButton; lblResName: TLabel; edtResName: TEdit; lblResType: TLabel; edtResType: TEdit; btnOk: TButton; btnCancel: TButton; dlgSave: TSaveDialog; procedure FormShow(Sender: TObject); procedure btnResFileClick(Sender: TObject); procedure btnWavFileClick(Sender: TObject); procedure rbtResClick(Sender: TObject); procedure rbtWavClick(Sender: TObject); protected procedure WMCheckWindowPos(var Msg: TMsg); message WM_CHECKWINDOWPOS; private { Private-Deklarationen } procedure ToggleControls; public { Public-Deklarationen } end; var frmConvert: TfrmConvert; procedure ConvertThisFile(const Filename: string); implementation {$R *.dfm} uses MMSystem, MMReg, MP3Utils; resourcestring SNoValidMP3File = 'This file is no MP3 valid file!'; SFileAlreadyConverted = 'This file is already in converted format!'; SFileExistsOverwrite = ' already exists.'#13#10#13#10'Overwrite?'; SHasRiffHeaderTake = #13#10'has a RIFF WAVE header!'#13#10#13#10'Take this header?'; SConversionSuccessful = 'Conversion successful!'; SWaveFilter = 'Wave audio (*.wav)|*.wav|All files|*.*'; SResourceFilter = 'Resource files (*.res)|*.res|All files|*.*'; //====================================================================== const CResFileHeader: array [0 .. 7] of cardinal = ( $00000000, $00000020, $0000FFFF, $0000FFFF, $00000000, $00000000, $00000000, $00000000 ); type TResEntryHeader = packed record dwResSize: longint; // Size of the pure resource data dwHdrSize: longint; // Size of the header (incl. this) end; // Resource type as Z-terminated wide string // Resource name as Z-terminated wide string const CResEntryTrailer: array [0 .. 3] of cardinal = ( $00000000, $00000030, $00000000, $00000000 ); procedure WriteResourceHeader(Stream: TStream; ResSize: longint; const ResName, ResType: string); var reh: TResEntryHeader; rn, rt: WideString; begin reh.dwResSize := ResSize; reh.dwHdrSize := 24 + (Length(ResName) + 1 + Length(ResType) + 1) * 2; rn := ResName; rt := ResType; Stream.WriteBuffer(CResFileHeader, 32); Stream.WriteBuffer(reh, 8); Stream.WriteBuffer(rt[1], 2 + 2 * Length(rt)); Stream.WriteBuffer(rn[1], 2 + 2 * Length(rn)); Stream.WriteBuffer(CResEntryTrailer, 16); end; //====================================================================== const //FOURCC_RIFF = $46464952; { 'RIFF' } FOURCC_WAVE = $45564157; { 'WAVE' } FOURCC_fmt = $20746D66; { 'fmt ' } FOURCC_fact = $74636166; { 'fact' } FOURCC_data = $61746164; { 'data' } type TMp3RiffHeader = packed record fccRiff: FOURCC; dwFileSize: longint; fccWave: FOURCC; fccFmt: FOURCC; dwFmtSize: longint; mp3wfx: TMpegLayer3WaveFormat; fccFact: FOURCC; dwFactSize: longint; lSizeInSamples: longint; fccData: FOURCC; dwDataSize: longint; end; procedure Mp3RiffHeaderFromInfo(var Riff: TMp3RiffHeader; const Header: TL3FHeader; Length: longint); const CChannels: array [0 .. 3] of word = ( 2, 2, 2, 1 ); CFlags: array [boolean, 0 .. 1] of Cardinal = ( ( MPEGLAYER3_FLAG_PADDING_OFF, MPEGLAYER3_FLAG_PADDING_ON ), ( MPEGLAYER3_FLAG_PADDING_ISO, MPEGLAYER3_FLAG_PADDING_ISO ) ); CSizeMismatch: array [boolean] of integer = ( 1, 2 ); begin Riff.fccRiff := FOURCC_RIFF; Riff.dwFileSize := Header.FileSize + SizeOf(TMp3RiffHeader); Riff.fccWave := FOURCC_WAVE; Riff.fccFmt := FOURCC_fmt; Riff.dwFmtSize := SizeOf(TMpegLayer3WaveFormat); Riff.mp3wfx.wfx.wFormatTag := WAVE_FORMAT_MPEGLAYER3; Riff.mp3wfx.wfx.nChannels := CChannels[Header.Mode]; Riff.mp3wfx.wfx.nSamplesPerSec := l3f_header_freq_hz(Header); Riff.mp3wfx.wfx.nAvgBytesPerSec := 125 * l3f_header_rate_kbps(Header); Riff.mp3wfx.wfx.nBlockAlign := 1; Riff.mp3wfx.wfx.wBitsPerSample := 0; Riff.mp3wfx.wfx.cbSize := MPEGLAYER3_WFX_EXTRA_BYTES; Riff.mp3wfx.wID := MPEGLAYER3_ID_MPEG; Riff.mp3wfx.fdwFlags := CFlags[Header.XingHeader > 0, Header.Padding]; Riff.mp3wfx.nBlockSize := Header.LengthInBytes; Riff.mp3wfx.nFramesPerBlock := 1; Riff.mp3wfx.nCodecDelay := 1105; // 1 + (Standard MDTC Filterbank) + (1 Granule) Riff.fccFact := FOURCC_fact; Riff.dwFactSize := 4; Riff.lSizeInSamples := (Header.TotalFrames - CSizeMismatch[Header.XingHeader > 0]) * Header.LengthInSamples - Riff.mp3wfx.nCodecDelay; Riff.fccData := FOURCC_data; Riff.dwDataSize := Header.FileSize; end; //====================================================================== procedure ConvertThisFile(const Filename: string); var Header: TL3FHeader; Length, Mp3Size: longint; NewName: string; Mp3Hdr, OldHdr: TMp3RiffHeader; InStream, OutStream: TFileStream; begin Length := Layer3EstimateLength(Filename, Header); if Length = 0 then begin MessageDlg(SNoValidMP3File, mtInformation, [mbOk], 0); exit; end; frmConvert.edtWavFile.Text := ChangeFileExt(Filename, '.wav'); frmConvert.edtResName.Text := ChangeFileExt(ExtractFileName(Filename), ''); frmConvert.edtResFile.Text := ChangeFileExt(Filename, '.res'); if CompareText(FileName, frmConvert.edtWavFile.Text) = 0 then frmConvert.rbtRes.Checked := true; if frmConvert.ShowModal <> mrOk then exit; if frmConvert.rbtWav.Checked then NewName := frmConvert.edtWavFile.Text else NewName := frmConvert.edtResFile.Text; if CompareText(Filename, NewName) = 0 then begin MessageDlg(SFileAlreadyConverted, mtInformation, [mbOk], 0); exit; end; if FileExists(NewName) then if MessageDlg(NewName + SFileExistsOverwrite, mtConfirmation, [mbOk, mbCancel], 0) <> mrOk then exit; Mp3RiffHeaderFromInfo(Mp3Hdr, Header, Length); Mp3Size := SizeOf(Mp3Hdr); InStream := TFileStream.Create(Filename, fmOpenRead or fmShareDenyWrite); try if Header.FileOffset >= SizeOf(TMp3RiffHeader) - 12 then begin InStream.Position := 0; InStream.ReadBuffer(OldHdr, 20); if (OldHdr.fccRiff = FOURCC_RIFF) and (OldHdr.dwFileSize <= Header.FileOffset + Header.FileSize) and (OldHdr.fccWave = FOURCC_WAVE) and (OldHdr.fccFmt = FOURCC_fmt) and (OldHdr.dwFmtSize >= SizeOf(TMpegLayer3WaveFormat)) then begin case MessageDlg(Filename + SHasRiffHeaderTake, mtConfirmation, [mbYes, mbNo, mbCancel], 0) of mrYes: begin Mp3Size := 0; Header.FileOffset := 0; Header.FileSize := OldHdr.dwFileSize; end; mrCancel: begin InStream.Free; exit; end; end; end; end; OutStream := TFileStream.Create(NewName, fmCreate); try if frmConvert.rbtRes.Checked then WriteResourceHeader(OutStream, Header.FileSize, frmConvert.edtResName.Text, frmConvert.edtResType.Text); if Mp3Size > 0 then OutStream.WriteBuffer(Mp3Hdr, Mp3Size); InStream.Position := Header.FileOffset; OutStream.CopyFrom(InStream, Header.FileSize); finally OutStream.Free; end; finally InStream.Free; end; MessageDlg(SConversionSuccessful, mtInformation, [mbOk], 0); end; //====================================================================== procedure TfrmConvert.ToggleControls; begin edtWavFile.Enabled := rbtWav.Checked; btnWavFile.Enabled := rbtWav.Checked; edtResName.Enabled := rbtRes.Checked; edtResType.Enabled := rbtRes.Checked; edtResFile.Enabled := rbtRes.Checked; btnResFile.Enabled := rbtRes.Checked; if rbtWav.Checked then btnOk.Enabled := Trim(edtWavFile.Text) <> '' else btnOk.Enabled := Trim(edtResFile.Text) <> ''; end; procedure TfrmConvert.rbtWavClick(Sender: TObject); begin rbtRes.Checked := not rbtWav.Checked; ToggleControls; end; procedure TfrmConvert.rbtResClick(Sender: TObject); begin rbtWav.Checked := not rbtRes.Checked; ToggleControls; end; procedure TfrmConvert.btnWavFileClick(Sender: TObject); begin dlgSave.Filter := SWaveFilter; dlgSave.DefaultExt := 'wav'; dlgSave.InitialDir := ExtractFilePath(edtWavFile.Text); dlgSave.FileName := edtWavFile.Text; if dlgSave.Execute then edtWavFile.Text := dlgSave.FileName; end; procedure TfrmConvert.btnResFileClick(Sender: TObject); begin dlgSave.Filter := SResourceFilter; dlgSave.DefaultExt := 'res'; dlgSave.InitialDir := ExtractFilePath(edtWavFile.Text); dlgSave.FileName := edtResFile.Text; if dlgSave.Execute then edtWavFile.Text := dlgSave.FileName; end; procedure TfrmConvert.FormShow(Sender: TObject); begin rbtWavClick(rbtWav); PostMessage(Handle, WM_CHECKWINDOWPOS, 0, 0); end; procedure TfrmConvert.WMCheckWindowPos(var Msg: TMsg); begin if Left < Monitor.WorkAreaRect.Left + 10 then Left := Monitor.WorkAreaRect.Left + 10 else if Left + Width > Monitor.WorkAreaRect.Right - 10 then Left := Monitor.WorkAreaRect.Right - 10 - Width; if Top < Monitor.WorkAreaRect.Top + 10 then Top := Monitor.WorkAreaRect.Top + 10 else if Top + Height > Monitor.WorkAreaRect.Bottom - 10 then Top := Monitor.WorkAreaRect.Bottom - 10 - Height; end; end. |