1 /********************************************************************
3 * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
5 * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
6 * PLEASE READ THESE TERMS DISTRIBUTING. *
8 * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000 *
9 * by Monty <monty@xiph.org> and The XIPHOPHORUS Company *
10 * http://www.xiph.org/ *
12 ********************************************************************
14 function: single-block PCM analysis mode dispatch
15 last mod: $Id: analysis.c,v 1.34 2000/10/12 03:12:52 xiphmont Exp $
17 ********************************************************************/
23 #include "vorbis/codec.h"
28 /* decides between modes, dispatches to the appropriate mapping. */
29 int vorbis_analysis(vorbis_block *vb,ogg_packet *op){
30 vorbis_dsp_state *vd=vb->vd;
31 vorbis_info *vi=vd->vi;
40 /* first things first. Make sure encode is ready */
41 oggpack_reset(&vb->opb);
42 /* Encode the packet type */
43 oggpack_write(&vb->opb,0,1);
45 /* currently lazy. Short block dispatches to 0, long to 1. */
47 if(vb->W &&vi->modes>1)mode=1;
48 type=vi->map_type[vi->mode_param[mode]->mapping];
51 /* Encode frame mode, pre,post windowsize, then dispatch */
52 oggpack_write(&vb->opb,mode,vd->modebits);
54 oggpack_write(&vb->opb,vb->lW,1);
55 oggpack_write(&vb->opb,vb->nW,1);
56 /*fprintf(stderr,"*");*/
61 if(_mapping_P[type]->forward(vb,vd->mode[mode]))
64 /* set up the packet wrapper */
66 op->packet=oggpack_get_buffer(&vb->opb);
67 op->bytes=oggpack_bytes(&vb->opb);
69 op->e_o_s=vb->eofflag;
70 op->granulepos=vb->granulepos;
71 op->packetno=vb->sequence; /* for sake of completeness */
76 /* there was no great place to put this.... */
77 void _analysis_output(char *base,int i,float *v,int n,int bark,int dB){
82 sprintf(buffer,"%s_%d.m",base,i);
85 if(!of)perror("failed to open data dump file");
92 fprintf(of,"%g ",toBARK(22050.*j/n));
94 fprintf(of,"%g ",(double)j);
97 fprintf(of,"%g\n",todB(fabs(v[j])));
99 fprintf(of,"%g\n",v[j]);