godot/thirdparty/libvorbis/floor0.c

/********************************************************************
 *                                                                  *
 * 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 1994-2015             *
 * by the Xiph.Org Foundation https://xiph.org/                     *
 *                                                                  *
 ********************************************************************

 function: floor backend 0 implementation

 ********************************************************************/

#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <ogg/ogg.h>
#include "vorbis/codec.h"
#include "codec_internal.h"
#include "registry.h"
#include "lpc.h"
#include "lsp.h"
#include "codebook.h"
#include "scales.h"
#include "misc.h"
#include "os.h"

#include "misc.h"
#include <stdio.h>

vorbis_look_floor0;


/***********************************************/

static void floor0_free_info(vorbis_info_floor *i){ … }

static void floor0_free_look(vorbis_look_floor *i){ … }

static vorbis_info_floor *floor0_unpack (vorbis_info *vi,oggpack_buffer *opb){ … }

/* initialize Bark scale and normalization lookups.  We could do this
   with static tables, but Vorbis allows a number of possible
   combinations, so it's best to do it computationally.

   The below is authoritative in terms of defining scale mapping.
   Note that the scale depends on the sampling rate as well as the
   linear block and mapping sizes */

static void floor0_map_lazy_init(vorbis_block      *vb,
                                 vorbis_info_floor *infoX,
                                 vorbis_look_floor0 *look){ … }

static vorbis_look_floor *floor0_look(vorbis_dsp_state *vd,
                                      vorbis_info_floor *i){ … }

static void *floor0_inverse1(vorbis_block *vb,vorbis_look_floor *i){ … }

static int floor0_inverse2(vorbis_block *vb,vorbis_look_floor *i,
                           void *memo,float *out){ … }

/* export hooks */
const vorbis_func_floor floor0_exportbundle= …;