codec_internal.h (5392B)
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 https://xiph.org/ * 10 * * 11 ******************************************************************** 12 13 function: libvorbis codec headers 14 15 ********************************************************************/ 16 17 #ifndef _V_CODECI_H_ 18 #define _V_CODECI_H_ 19 20 #include "envelope.h" 21 #include "codebook.h" 22 23 #define BLOCKTYPE_IMPULSE 0 24 #define BLOCKTYPE_PADDING 1 25 #define BLOCKTYPE_TRANSITION 0 26 #define BLOCKTYPE_LONG 1 27 28 #define PACKETBLOBS 15 29 30 typedef struct vorbis_block_internal{ 31 float **pcmdelay; /* this is a pointer into local storage */ 32 float ampmax; 33 int blocktype; 34 35 oggpack_buffer *packetblob[PACKETBLOBS]; /* initialized, must be freed; 36 blob [PACKETBLOBS/2] points to 37 the oggpack_buffer in the 38 main vorbis_block */ 39 } vorbis_block_internal; 40 41 typedef void vorbis_look_floor; 42 typedef void vorbis_look_residue; 43 typedef void vorbis_look_transform; 44 45 /* mode ************************************************************/ 46 typedef struct { 47 int blockflag; 48 int windowtype; 49 int transformtype; 50 int mapping; 51 } vorbis_info_mode; 52 53 typedef void vorbis_info_floor; 54 typedef void vorbis_info_residue; 55 typedef void vorbis_info_mapping; 56 57 #include "psy.h" 58 #include "bitrate.h" 59 60 typedef struct private_state { 61 /* local lookup storage */ 62 envelope_lookup *ve; /* envelope lookup */ 63 int window[2]; 64 vorbis_look_transform **transform[2]; /* block, type */ 65 drft_lookup fft_look[2]; 66 67 int modebits; 68 vorbis_look_floor **flr; 69 vorbis_look_residue **residue; 70 vorbis_look_psy *psy; 71 vorbis_look_psy_global *psy_g_look; 72 73 /* local storage, only used on the encoding side. This way the 74 application does not need to worry about freeing some packets' 75 memory and not others'; packet storage is always tracked. 76 Cleared next call to a _dsp_ function */ 77 unsigned char *header; 78 unsigned char *header1; 79 unsigned char *header2; 80 81 bitrate_manager_state bms; 82 83 ogg_int64_t sample_count; 84 } private_state; 85 86 /* codec_setup_info contains all the setup information specific to the 87 specific compression/decompression mode in progress (eg, 88 psychoacoustic settings, channel setup, options, codebook 89 etc). 90 *********************************************************************/ 91 92 #include "highlevel.h" 93 typedef struct codec_setup_info { 94 95 /* Vorbis supports only short and long blocks, but allows the 96 encoder to choose the sizes */ 97 98 long blocksizes[2]; 99 100 /* modes are the primary means of supporting on-the-fly different 101 blocksizes, different channel mappings (LR or M/A), 102 different residue backends, etc. Each mode consists of a 103 blocksize flag and a mapping (along with the mapping setup */ 104 105 int modes; 106 int maps; 107 int floors; 108 int residues; 109 int books; 110 int psys; /* encode only */ 111 112 vorbis_info_mode *mode_param[64]; 113 int map_type[64]; 114 vorbis_info_mapping *map_param[64]; 115 int floor_type[64]; 116 vorbis_info_floor *floor_param[64]; 117 int residue_type[64]; 118 vorbis_info_residue *residue_param[64]; 119 static_codebook *book_param[256]; 120 codebook *fullbooks; 121 122 vorbis_info_psy *psy_param[4]; /* encode only */ 123 vorbis_info_psy_global psy_g_param; 124 125 bitrate_manager_info bi; 126 highlevel_encode_setup hi; /* used only by vorbisenc.c. It's a 127 highly redundant structure, but 128 improves clarity of program flow. */ 129 int halfrate_flag; /* painless downsample for decode */ 130 } codec_setup_info; 131 132 extern vorbis_look_psy_global *_vp_global_look(vorbis_info *vi); 133 extern void _vp_global_free(vorbis_look_psy_global *look); 134 135 136 137 typedef struct { 138 int sorted_index[VIF_POSIT+2]; 139 int forward_index[VIF_POSIT+2]; 140 int reverse_index[VIF_POSIT+2]; 141 142 int hineighbor[VIF_POSIT]; 143 int loneighbor[VIF_POSIT]; 144 int posts; 145 146 int n; 147 int quant_q; 148 vorbis_info_floor1 *vi; 149 150 long phrasebits; 151 long postbits; 152 long frames; 153 } vorbis_look_floor1; 154 155 156 157 extern int *floor1_fit(vorbis_block *vb,vorbis_look_floor1 *look, 158 const float *logmdct, /* in */ 159 const float *logmask); 160 extern int *floor1_interpolate_fit(vorbis_block *vb,vorbis_look_floor1 *look, 161 int *A,int *B, 162 int del); 163 extern int floor1_encode(oggpack_buffer *opb,vorbis_block *vb, 164 vorbis_look_floor1 *look, 165 int *post,int *ilogmask); 166 #endif