FIFE
2008.0
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00001 /*************************************************************************** 00002 * Copyright (C) 2005-2008 by the FIFE team * 00003 * http://www.fifengine.de * 00004 * This file is part of FIFE. * 00005 * * 00006 * FIFE is free software; you can redistribute it and/or * 00007 * modify it under the terms of the GNU Lesser General Public * 00008 * License as published by the Free Software Foundation; either * 00009 * version 2.1 of the License, or (at your option) any later version. * 00010 * * 00011 * This library 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 GNU * 00014 * Lesser General Public License for more details. * 00015 * * 00016 * You should have received a copy of the GNU Lesser General Public * 00017 * License along with this library; if not, write to the * 00018 * Free Software Foundation, Inc., * 00019 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * 00020 ***************************************************************************/ 00021 00022 #ifndef FIFE_SOUNDDECODER_H 00023 #define FIFE_SOUNDDECODER_H 00024 00025 // Standard C++ library includes 00026 00027 // Platform specific includes 00028 00029 // 3rd party library includes 00030 00031 // FIFE includes 00032 // These includes are split up in two parts, separated by one empty line 00033 // First block: files included from the FIFE root src directory 00034 // Second block: files included from the same folder 00035 00036 #include "soundconfig.h" 00037 #include "fife_openal.h" 00038 00039 namespace FIFE { 00040 00041 class SoundDecoder { 00042 public: 00043 00044 virtual ~SoundDecoder() {} 00045 00048 virtual unsigned long getDecodedLength() const = 0; 00049 00059 bool needsStreaming() const { return getDecodedLength() > MAX_KEEP_IN_MEM; } 00060 00065 virtual bool setCursor(unsigned long pos) = 0; 00066 00072 virtual bool decode(unsigned long length) = 0; 00073 00078 virtual void *getBuffer() const = 0; 00079 00082 virtual unsigned long getBufferSize() = 0; 00083 00086 virtual void releaseBuffer() = 0; 00087 00092 bool isStereo() const { 00093 return m_isstereo; 00094 } 00095 00098 ALenum getALFormat() const { 00099 if (m_isstereo) { 00100 return m_is8bit ? AL_FORMAT_STEREO8 : AL_FORMAT_STEREO16; 00101 } else { 00102 return m_is8bit ? AL_FORMAT_MONO8 : AL_FORMAT_MONO16; 00103 } 00104 } 00105 00108 short getBitResolution() const { 00109 return m_is8bit ? 8 : 16; 00110 } 00111 00114 unsigned long getSampleRate() const{ 00115 return m_samplerate; 00116 } 00117 00118 protected: 00119 bool m_isstereo; 00120 bool m_is8bit; 00121 unsigned long m_samplerate; 00122 }; 00123 } 00124 00125 #endif