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"L. Spiro Engine"
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F:/My Projects/LSEngine/Modules/LSSoundLib/Src/Ogg/LSSVorbisBackends.h
00001 /******************************************************************** 00002 * * 00003 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * 00004 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * 00005 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * 00006 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * 00007 * * 00008 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 * 00009 * by the Xiph.Org Foundation http://www.xiph.org/ * 00010 * * 00011 ******************************************************************** 00012 00013 function: libvorbis backend and mapping structures; needed for 00014 static mode headers 00015 last mod: $Id: backends.h 16962 2010-03-11 07:30:34Z xiphmont $ 00016 00017 ********************************************************************/ 00018 00019 #ifndef __LSS_VORBISBACKENDS_H__ 00020 #define __LSS_VORBISBACKENDS_H__ 00021 00022 #include "../LSSSoundLib.h" 00023 #include "LSSOgg.h" 00024 #include "LSSVorbisCodec.h" 00025 #include "LSSVorbisConstants.h" 00026 #include "LSSVorbisStructs.h" 00027 00028 namespace lss { 00029 00036 class CVorbisBackends { 00037 public : 00038 // == Types. 00042 typedef struct vorbis_func_floor { 00043 LSVOID (* pack)( CVorbisStructs::vorbis_info_floor *, COgg::oggpack_buffer * ); 00044 CVorbisStructs::vorbis_info_floor * (* unpack)( CVorbisCodec::vorbis_info *, COgg::oggpack_buffer * ); 00045 CVorbisStructs::vorbis_look_floor * (* look)( CVorbisCodec::vorbis_dsp_state *, CVorbisStructs::vorbis_info_floor * ); 00046 LSVOID (* free_info)( CVorbisStructs::vorbis_info_floor * ); 00047 LSVOID (* free_look)( CVorbisStructs::vorbis_look_floor * ); 00048 LSVOID * (* inverse1)( CVorbisCodec::vorbis_block *, CVorbisStructs::vorbis_look_floor * ); 00049 LSINT32 (* inverse2)( CVorbisCodec::vorbis_block *, CVorbisStructs::vorbis_look_floor *, 00050 LSVOID *buffer, LSFLOAT * ); 00051 } * LPvorbis_func_floor, * const LPCvorbis_func_floor; 00052 00056 typedef struct vorbis_info_floor0 { 00057 LSINT32 order; 00058 LSINT32 rate; 00059 LSINT32 barkmap; 00060 00061 LSINT32 ampbits; 00062 LSINT32 ampdB; 00063 00064 LSINT32 numbooks; // <= 16. 00065 LSINT32 books[16]; 00066 00067 LSFLOAT lessthan; // Encode-only config setting hacks for libvorbis. 00068 LSFLOAT greaterthan; // Encode-only config setting hacks for libvorbis. 00069 00070 } * LPvorbis_info_floor0, * const LPCvorbis_info_floor0; 00071 00075 typedef struct vorbis_info_floor1 { 00076 LSINT32 partitions; // 0 to 31. 00077 LSINT32 partitionclass[VIF_PARTS]; // 0 to 15. 00078 00079 LSINT32 class_dim[VIF_CLASS]; // 1 to 8. 00080 LSINT32 class_subs[VIF_CLASS]; // 0, 1, 2, 3 (bits: 1 << n possible). 00081 LSINT32 class_book[VIF_CLASS]; // subs ^ dim entries. 00082 LSINT32 class_subbook[VIF_CLASS][8]; // [VIF_CLASS][subs]. 00083 00084 00085 LSINT32 mult; // 1 2 3 or 4. 00086 LSINT32 postlist[VIF_POSIT+2]; // First two implicit. 00087 00088 00089 // Encode side analysis parameters. 00090 LSFLOAT maxover; 00091 LSFLOAT maxunder; 00092 LSFLOAT maxerr; 00093 00094 LSFLOAT twofitweight; 00095 LSFLOAT twofitatten; 00096 00097 LSINT32 n; 00098 00099 } * LPvorbis_info_floor1, * const LPCvorbis_info_floor1; 00100 00104 typedef struct vorbis_func_residue { 00105 LSVOID (* pack)( CVorbisStructs::vorbis_info_residue *, COgg::oggpack_buffer * ); 00106 CVorbisStructs::vorbis_info_residue * (* unpack)( CVorbisCodec::vorbis_info *, COgg::oggpack_buffer * ); 00107 CVorbisStructs::vorbis_look_residue * (* look)( CVorbisCodec::vorbis_dsp_state *, 00108 CVorbisStructs::vorbis_info_residue * ); 00109 LSVOID (* free_info)( CVorbisStructs::vorbis_info_residue * ); 00110 LSVOID (* free_look)( CVorbisStructs::vorbis_look_residue * ); 00111 LSINT32 ** (* class0)( CVorbisCodec::vorbis_block *, CVorbisStructs::vorbis_look_residue *, 00112 LSINT32 **, LSINT32 *, LSINT32 ); 00113 LSINT32 (* forward)( COgg::oggpack_buffer *, CVorbisCodec::vorbis_block *, 00114 CVorbisStructs::vorbis_look_residue *, 00115 LSINT32 **, LSINT32 *, LSINT32, LSINT32 **, LSINT32 ); 00116 LSINT32 (* inverse)( CVorbisCodec::vorbis_block *, CVorbisStructs::vorbis_look_residue *, 00117 LSFLOAT **, LSINT32 *, LSINT32 ); 00118 } * LPvorbis_func_residue, * const LPCvorbis_func_residue; 00119 00123 typedef struct vorbis_info_residue0 { 00124 // Block-partitioned VQ coded straight residue. 00125 LSINT32 begin; 00126 LSINT32 end; 00127 00128 // First stage (lossless partitioning). 00129 LSINT32 grouping; // Froup n vectors per partition. 00130 LSINT32 partitions; // Possible codebooks for a partition. 00131 LSINT32 partvals; // Partitions ^ groupbook dim. 00132 LSINT32 groupbook; // Huffbook for partitioning. 00133 LSINT32 secondstages[64]; // Expanded out to pointers in lookup. 00134 LSINT32 booklist[512]; // List of second stage books. 00135 00136 LSINT32 classmetric1[64]; 00137 LSINT32 classmetric2[64]; 00138 } * LPvorbis_info_residue0, * const LPCvorbis_info_residue0; 00139 00143 typedef struct vorbis_func_mapping { 00144 LSVOID (* pack)( CVorbisCodec::vorbis_info *, CVorbisStructs::vorbis_info_mapping *, 00145 COgg::oggpack_buffer * ); 00146 CVorbisStructs::vorbis_info_mapping * (* unpack)( CVorbisCodec::vorbis_info *, COgg::oggpack_buffer * ); 00147 LSVOID (* free_info)( CVorbisStructs::vorbis_info_mapping * ); 00148 LSINT32 (* forward)( CVorbisCodec::vorbis_block * vb ); 00149 LSINT32 (* inverse)( CVorbisCodec::vorbis_block * vb, CVorbisStructs::vorbis_info_mapping * ); 00150 } * LPvorbis_func_mapping, * const LPCvorbis_func_mapping; 00151 00152 00153 // == Members. 00154 00155 }; 00156 00157 } // namespace lss 00158 00159 #endif // __LSS_VORBISBACKENDS_H__ 00160
