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comparison: media/libvorbis/lib/codec_internal.h
media/libvorbis/lib/codec_internal.h
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| -1:000000000000 | 0:dace180189ca |
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| 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 |
