| 1 | /******************************************************************** |
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| 2 | * * |
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| 3 | * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * |
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| 4 | * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * |
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| 5 | * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * |
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| 6 | * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * |
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| 7 | * * |
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| 8 | * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 * |
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| 9 | * by the Xiph.Org Foundation http://www.xiph.org/ * |
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| 10 | * * |
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| 11 | ******************************************************************** |
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| 12 | |
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| 13 | function: libvorbis codec headers |
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| 14 | last mod: $Id: codec_internal.h 13293 2007-07-24 00:09:47Z xiphmont $ |
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| 15 | |
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| 16 | ********************************************************************/ |
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| 17 | |
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| 18 | #ifndef _V_CODECI_H_ |
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| 19 | #define _V_CODECI_H_ |
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| 20 | |
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| 21 | #include "envelope.h" |
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| 22 | #include "codebook.h" |
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| 23 | |
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| 24 | #define BLOCKTYPE_IMPULSE 0 |
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| 25 | #define BLOCKTYPE_PADDING 1 |
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| 26 | #define BLOCKTYPE_TRANSITION 0 |
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| 27 | #define BLOCKTYPE_LONG 1 |
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| 28 | |
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| 29 | #define PACKETBLOBS 15 |
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| 30 | |
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| 31 | typedef struct vorbis_block_internal{ |
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| 32 | float **pcmdelay; /* this is a pointer into local storage */ |
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| 33 | float ampmax; |
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| 34 | int blocktype; |
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| 35 | |
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| 36 | oggpack_buffer *packetblob[PACKETBLOBS]; /* initialized, must be freed; |
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| 37 | blob [PACKETBLOBS/2] points to |
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| 38 | the oggpack_buffer in the |
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| 39 | main vorbis_block */ |
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| 40 | } vorbis_block_internal; |
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| 41 | |
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| 42 | typedef void vorbis_look_floor; |
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| 43 | typedef void vorbis_look_residue; |
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| 44 | typedef void vorbis_look_transform; |
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| 45 | |
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| 46 | /* mode ************************************************************/ |
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| 47 | typedef struct { |
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| 48 | int blockflag; |
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| 49 | int windowtype; |
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| 50 | int transformtype; |
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| 51 | int mapping; |
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| 52 | } vorbis_info_mode; |
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| 53 | |
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| 54 | typedef void vorbis_info_floor; |
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| 55 | typedef void vorbis_info_residue; |
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| 56 | typedef void vorbis_info_mapping; |
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| 57 | |
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| 58 | #include "psy.h" |
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| 59 | #include "bitrate.h" |
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| 60 | |
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| 61 | typedef struct private_state { |
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| 62 | /* local lookup storage */ |
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| 63 | envelope_lookup *ve; /* envelope lookup */ |
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| 64 | int window[2]; |
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| 65 | vorbis_look_transform **transform[2]; /* block, type */ |
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| 66 | drft_lookup fft_look[2]; |
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| 67 | |
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| 68 | int modebits; |
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| 69 | vorbis_look_floor **flr; |
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| 70 | vorbis_look_residue **residue; |
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| 71 | vorbis_look_psy *psy; |
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| 72 | vorbis_look_psy_global *psy_g_look; |
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| 73 | |
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| 74 | /* local storage, only used on the encoding side. This way the |
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| 75 | application does not need to worry about freeing some packets' |
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| 76 | memory and not others'; packet storage is always tracked. |
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| 77 | Cleared next call to a _dsp_ function */ |
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| 78 | unsigned char *header; |
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| 79 | unsigned char *header1; |
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| 80 | unsigned char *header2; |
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| 81 | |
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| 82 | bitrate_manager_state bms; |
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| 83 | |
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| 84 | ogg_int64_t sample_count; |
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| 85 | } private_state; |
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| 86 | |
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| 87 | /* codec_setup_info contains all the setup information specific to the |
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| 88 | specific compression/decompression mode in progress (eg, |
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| 89 | psychoacoustic settings, channel setup, options, codebook |
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| 90 | etc). |
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| 91 | *********************************************************************/ |
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| 92 | |
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| 93 | #include "highlevel.h" |
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| 94 | typedef struct codec_setup_info { |
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| 95 | |
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| 96 | /* Vorbis supports only short and long blocks, but allows the |
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| 97 | encoder to choose the sizes */ |
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| 98 | |
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| 99 | long blocksizes[2]; |
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| 100 | |
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| 101 | /* modes are the primary means of supporting on-the-fly different |
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| 102 | blocksizes, different channel mappings (LR or M/A), |
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| 103 | different residue backends, etc. Each mode consists of a |
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| 104 | blocksize flag and a mapping (along with the mapping setup */ |
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| 105 | |
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| 106 | int modes; |
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| 107 | int maps; |
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| 108 | int floors; |
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| 109 | int residues; |
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| 110 | int books; |
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| 111 | int psys; /* encode only */ |
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| 112 | |
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| 113 | vorbis_info_mode *mode_param[64]; |
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| 114 | int map_type[64]; |
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| 115 | vorbis_info_mapping *map_param[64]; |
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| 116 | int floor_type[64]; |
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| 117 | vorbis_info_floor *floor_param[64]; |
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| 118 | int residue_type[64]; |
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| 119 | vorbis_info_residue *residue_param[64]; |
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| 120 | static_codebook *book_param[256]; |
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| 121 | codebook *fullbooks; |
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| 122 | |
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| 123 | vorbis_info_psy *psy_param[4]; /* encode only */ |
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| 124 | vorbis_info_psy_global psy_g_param; |
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| 125 | |
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| 126 | bitrate_manager_info bi; |
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| 127 | highlevel_encode_setup hi; /* used only by vorbisenc.c. It's a |
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| 128 | highly redundant structure, but |
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| 129 | improves clarity of program flow. */ |
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| 130 | int halfrate_flag; /* painless downsample for decode */ |
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| 131 | } codec_setup_info; |
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| 132 | |
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| 133 | extern vorbis_look_psy_global *_vp_global_look(vorbis_info *vi); |
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| 134 | extern void _vp_global_free(vorbis_look_psy_global *look); |
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| 135 | |
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| 136 | #endif |
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| 137 | |
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