1 /******************************************************************** 2 * * 3 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * 4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * 5 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * 6 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * 7 * * 8 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 * 9 * by the Xiph.Org Foundation http://www.xiph.org/ * 10 * * 11 ******************************************************************** 12 13 function: libvorbis codec headers 14 last mod: $Id: codec_internal.h 16227 2009-07-08 06:58:46Z xiphmont $ 15 16 ********************************************************************/ 17 18 #ifndef _V_CODECI_H_ 19 #define _V_CODECI_H_ 20 21 #include "envelope.h" 22 #include "codebook.h" 23 24 #define BLOCKTYPE_IMPULSE 0 25 #define BLOCKTYPE_PADDING 1 26 #define BLOCKTYPE_TRANSITION 0 27 #define BLOCKTYPE_LONG 1 28 29 #define PACKETBLOBS 15 30 31 typedef struct vorbis_block_internal{ 32 float **pcmdelay; /* this is a pointer into local storage */ 33 float ampmax; 34 int blocktype; 35 36 oggpack_buffer *packetblob[PACKETBLOBS]; /* initialized, must be freed; 37 blob [PACKETBLOBS/2] points to 38 the oggpack_buffer in the 39 main vorbis_block */ 40 } vorbis_block_internal; 41 42 typedef void vorbis_look_floor; 43 typedef void vorbis_look_residue; 44 typedef void vorbis_look_transform; 45 46 /* mode ************************************************************/ 47 typedef struct { 48 int blockflag; 49 int windowtype; 50 int transformtype; 51 int mapping; 52 } vorbis_info_mode; 53 54 typedef void vorbis_info_floor; 55 typedef void vorbis_info_residue; 56 typedef void vorbis_info_mapping; 57 58 #include "psy.h" 59 #include "bitrate.h" 60 61 typedef struct private_state { 62 /* local lookup storage */ 63 envelope_lookup *ve; /* envelope lookup */ 64 int window[2]; 65 vorbis_look_transform **transform[2]; /* block, type */ 66 drft_lookup fft_look[2]; 67 68 int modebits; 69 vorbis_look_floor **flr; 70 vorbis_look_residue **residue; 71 vorbis_look_psy *psy; 72 vorbis_look_psy_global *psy_g_look; 73 74 /* local storage, only used on the encoding side. This way the 75 application does not need to worry about freeing some packets' 76 memory and not others'; packet storage is always tracked. 77 Cleared next call to a _dsp_ function */ 78 unsigned char *header; 79 unsigned char *header1; 80 unsigned char *header2; 81 82 bitrate_manager_state bms; 83 84 ogg_int64_t sample_count; 85 } private_state; 86 87 /* codec_setup_info contains all the setup information specific to the 88 specific compression/decompression mode in progress (eg, 89 psychoacoustic settings, channel setup, options, codebook 90 etc). 91 *********************************************************************/ 92 93 #include "highlevel.h" 94 typedef struct codec_setup_info { 95 96 /* Vorbis supports only short and long blocks, but allows the 97 encoder to choose the sizes */ 98 99 long blocksizes[2]; 100 101 /* modes are the primary means of supporting on-the-fly different 102 blocksizes, different channel mappings (LR or M/A), 103 different residue backends, etc. Each mode consists of a 104 blocksize flag and a mapping (along with the mapping setup */ 105 106 int modes; 107 int maps; 108 int floors; 109 int residues; 110 int books; 111 int psys; /* encode only */ 112 113 vorbis_info_mode *mode_param[64]; 114 int map_type[64]; 115 vorbis_info_mapping *map_param[64]; 116 int floor_type[64]; 117 vorbis_info_floor *floor_param[64]; 118 int residue_type[64]; 119 vorbis_info_residue *residue_param[64]; 120 static_codebook *book_param[256]; 121 codebook *fullbooks; 122 123 vorbis_info_psy *psy_param[4]; /* encode only */ 124 vorbis_info_psy_global psy_g_param; 125 126 bitrate_manager_info bi; 127 highlevel_encode_setup hi; /* used only by vorbisenc.c. It's a 128 highly redundant structure, but 129 improves clarity of program flow. */ 130 int halfrate_flag; /* painless downsample for decode */ 131 } codec_setup_info; 132 133 extern vorbis_look_psy_global *_vp_global_look(vorbis_info *vi); 134 extern void _vp_global_free(vorbis_look_psy_global *look); 135 136 137 138 typedef struct { 139 int sorted_index[VIF_POSIT+2]; 140 int forward_index[VIF_POSIT+2]; 141 int reverse_index[VIF_POSIT+2]; 142 143 int hineighbor[VIF_POSIT]; 144 int loneighbor[VIF_POSIT]; 145 int posts; 146 147 int n; 148 int quant_q; 149 vorbis_info_floor1 *vi; 150 151 long phrasebits; 152 long postbits; 153 long frames; 154 } vorbis_look_floor1; 155 156 157 158 extern int *floor1_fit(vorbis_block *vb,vorbis_look_floor1 *look, 159 const float *logmdct, /* in */ 160 const float *logmask); 161 extern int *floor1_interpolate_fit(vorbis_block *vb,vorbis_look_floor1 *look, 162 int *A,int *B, 163 int del); 164 extern int floor1_encode(oggpack_buffer *opb,vorbis_block *vb, 165 vorbis_look_floor1 *look, 166 int *post,int *ilogmask); 167 #endif 168
