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+/********************************************************************
+ * *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
+ * *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
+ * by the Xiph.Org Foundation https://xiph.org/ *
+ * *
+ ********************************************************************
+
+ function: libvorbis codec headers
+
+ ********************************************************************/
+
+#ifndef _V_CODECI_H_
+#define _V_CODECI_H_
+
+#include "envelope.h"
+#include "codebook.h"
+
+#define BLOCKTYPE_IMPULSE 0
+#define BLOCKTYPE_PADDING 1
+#define BLOCKTYPE_TRANSITION 0
+#define BLOCKTYPE_LONG 1
+
+#define PACKETBLOBS 15
+
+typedef struct vorbis_block_internal{
+ float **pcmdelay; /* this is a pointer into local storage */
+ float ampmax;
+ int blocktype;
+
+ oggpack_buffer *packetblob[PACKETBLOBS]; /* initialized, must be freed;
+ blob [PACKETBLOBS/2] points to
+ the oggpack_buffer in the
+ main vorbis_block */
+} vorbis_block_internal;
+
+typedef void vorbis_look_floor;
+typedef void vorbis_look_residue;
+typedef void vorbis_look_transform;
+
+/* mode ************************************************************/
+typedef struct {
+ int blockflag;
+ int windowtype;
+ int transformtype;
+ int mapping;
+} vorbis_info_mode;
+
+typedef void vorbis_info_floor;
+typedef void vorbis_info_residue;
+typedef void vorbis_info_mapping;
+
+#include "psy.h"
+#include "bitrate.h"
+
+typedef struct private_state {
+ /* local lookup storage */
+ envelope_lookup *ve; /* envelope lookup */
+ int window[2];
+ vorbis_look_transform **transform[2]; /* block, type */
+ drft_lookup fft_look[2];
+
+ int modebits;
+ vorbis_look_floor **flr;
+ vorbis_look_residue **residue;
+ vorbis_look_psy *psy;
+ vorbis_look_psy_global *psy_g_look;
+
+ /* local storage, only used on the encoding side. This way the
+ application does not need to worry about freeing some packets'
+ memory and not others'; packet storage is always tracked.
+ Cleared next call to a _dsp_ function */
+ unsigned char *header;
+ unsigned char *header1;
+ unsigned char *header2;
+
+ bitrate_manager_state bms;
+
+ ogg_int64_t sample_count;
+} private_state;
+
+/* codec_setup_info contains all the setup information specific to the
+ specific compression/decompression mode in progress (eg,
+ psychoacoustic settings, channel setup, options, codebook
+ etc).
+*********************************************************************/
+
+#include "highlevel.h"
+typedef struct codec_setup_info {
+
+ /* Vorbis supports only short and long blocks, but allows the
+ encoder to choose the sizes */
+
+ long blocksizes[2];
+
+ /* modes are the primary means of supporting on-the-fly different
+ blocksizes, different channel mappings (LR or M/A),
+ different residue backends, etc. Each mode consists of a
+ blocksize flag and a mapping (along with the mapping setup */
+
+ int modes;
+ int maps;
+ int floors;
+ int residues;
+ int books;
+ int psys; /* encode only */
+
+ vorbis_info_mode *mode_param[64];
+ int map_type[64];
+ vorbis_info_mapping *map_param[64];
+ int floor_type[64];
+ vorbis_info_floor *floor_param[64];
+ int residue_type[64];
+ vorbis_info_residue *residue_param[64];
+ static_codebook *book_param[256];
+ codebook *fullbooks;
+
+ vorbis_info_psy *psy_param[4]; /* encode only */
+ vorbis_info_psy_global psy_g_param;
+
+ bitrate_manager_info bi;
+ highlevel_encode_setup hi; /* used only by vorbisenc.c. It's a
+ highly redundant structure, but
+ improves clarity of program flow. */
+ int halfrate_flag; /* painless downsample for decode */
+} codec_setup_info;
+
+extern vorbis_look_psy_global *_vp_global_look(vorbis_info *vi);
+extern void _vp_global_free(vorbis_look_psy_global *look);
+
+
+
+typedef struct {
+ int sorted_index[VIF_POSIT+2];
+ int forward_index[VIF_POSIT+2];
+ int reverse_index[VIF_POSIT+2];
+
+ int hineighbor[VIF_POSIT];
+ int loneighbor[VIF_POSIT];
+ int posts;
+
+ int n;
+ int quant_q;
+ vorbis_info_floor1 *vi;
+
+ long phrasebits;
+ long postbits;
+ long frames;
+} vorbis_look_floor1;
+
+
+
+extern int *floor1_fit(vorbis_block *vb,vorbis_look_floor1 *look,
+ const float *logmdct, /* in */
+ const float *logmask);
+extern int *floor1_interpolate_fit(vorbis_block *vb,vorbis_look_floor1 *look,
+ int *A,int *B,
+ int del);
+extern int floor1_encode(oggpack_buffer *opb,vorbis_block *vb,
+ vorbis_look_floor1 *look,
+ int *post,int *ilogmask);
+#endif