CLAM-Development
1.1
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00001 /* 00002 * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG) 00003 * UNIVERSITAT POMPEU FABRA 00004 * 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2 of the License, or 00009 * (at your option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this program; if not, write to the Free Software 00018 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00019 * 00020 */ 00021 00022 #include "MonoAudioFileWriter.hxx" 00023 #include "AudioCodecs_Stream.hxx" 00024 #include "FileSystem.hxx" 00025 #include "ProcessingFactory.hxx" 00026 00027 00028 namespace CLAM 00029 { 00030 00031 namespace Hidden 00032 { 00033 static const char * metadata[] = { 00034 "key", "MonoAudioFileWriter", 00035 "category", "Audio File I/O", 00036 "description", "MonoAudioFileWriter", 00037 0 00038 }; 00039 static FactoryRegistrator<ProcessingFactory, MonoAudioFileWriter> reg = metadata; 00040 } 00041 00042 00043 MonoAudioFileWriter::MonoAudioFileWriter() 00044 : mInput( "Samples Write", this ), 00045 mOutStream( NULL ) 00046 { 00047 Configure( MonoAudioFileWriterConfig() ); 00048 } 00049 00050 MonoAudioFileWriter::MonoAudioFileWriter( const ProcessingConfig& cfg ) 00051 : mInput( "Samples Write", this ), 00052 mOutStream( NULL ) 00053 { 00054 Configure( cfg ); 00055 } 00056 00057 MonoAudioFileWriter::~MonoAudioFileWriter() 00058 { 00059 if ( mOutStream ) 00060 delete mOutStream; 00061 if ( mConfig.HasTargetFile() ) 00062 FileSystem::GetInstance().UnlockFile( mConfig.GetTargetFile() ); 00063 } 00064 00065 const char* MonoAudioFileWriter::GetClassName() const 00066 { 00067 return "MonoAudioFileWriter"; 00068 } 00069 00070 const ProcessingConfig& MonoAudioFileWriter::GetConfig() const 00071 { 00072 return mConfig; 00073 } 00074 00075 bool MonoAudioFileWriter::Do() 00076 { 00077 bool result = Do( mInput.GetAudio() ); 00078 mInput.Consume(); 00079 return result; 00080 } 00081 00082 bool MonoAudioFileWriter::Do( const Audio & data ) 00083 { 00084 mOutStream->WriteData( 0, data.GetBuffer().GetPtr(), data.GetSize() ); 00085 return true; 00086 } 00087 00088 bool MonoAudioFileWriter::ConcreteConfigure( const ProcessingConfig& cfg ) 00089 { 00090 if ( mConfig.HasTargetFile() ) 00091 FileSystem::GetInstance().UnlockFile( mConfig.GetTargetFile() ); 00092 00093 CopyAsConcreteConfig( mConfig, cfg ); 00094 00095 const std::string & location = mConfig.GetTargetFile(); 00096 00097 if ( location == "") 00098 { 00099 AddConfigErrorMessage("No file selected"); 00100 return false; 00101 } 00102 AudioFileHeader header; 00103 header.SetValues( mConfig.GetSampleRate(), 1, EAudioFileFormat::FormatFromFilename(location)); 00104 mFile.CreateNew(location, header); 00105 if ( ! mFile.GetHeader().HasChannels()) 00106 { 00107 AddConfigErrorMessage("The file is not writeable"); 00108 return false; 00109 } 00110 if ( mFile.GetHeader().GetChannels() != 1 ) // this is the 'mono' file writer... 00111 { 00112 AddConfigErrorMessage("Too many channels!"); 00113 return false; 00114 } 00115 00116 if ( !mFile.IsWritable() ) 00117 { 00118 AddConfigErrorMessage("The format does not support such number of channels, endiannes or sampling rate."); 00119 return false; 00120 } 00121 00122 if ( FileSystem::GetInstance().IsFileLocked( mConfig.GetTargetFile() ) ) 00123 { 00124 AddConfigErrorMessage("File: "); 00125 AddConfigErrorMessage(mConfig.GetTargetFile() ); 00126 AddConfigErrorMessage(" has been locked by another Processing"); 00127 00128 return false; 00129 } 00130 00131 FileSystem::GetInstance().LockFile( mConfig.GetTargetFile() ); 00132 00133 mOutStream = mFile.GetStream(); 00134 00135 if ( !mOutStream ) 00136 { 00137 AddConfigErrorMessage("Could not get a valid audio file stream!"); 00138 return false; 00139 } 00140 00141 return true; 00142 } 00143 00144 bool MonoAudioFileWriter::ConcreteStart() 00145 { 00146 mOutStream->PrepareWriting(); 00147 00148 return true; 00149 } 00150 00151 bool MonoAudioFileWriter::ConcreteStop() 00152 { 00153 mOutStream->Dispose(); 00154 delete mOutStream; 00155 mOutStream = NULL; 00156 00157 return true; 00158 } 00159 } 00160