/********************************************************************
* *
- * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
- * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
- * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
- * PLEASE READ THESE TERMS DISTRIBUTING. *
+ * 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 OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-1999 *
- * by 1999 Monty <monty@xiph.org> and The XIPHOPHORUS Company *
- * http://www.xiph.org/ *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
- function: PCM data vector blocking, windowing and dis/reassembly
- author: Monty <xiphmont@mit.edu>
- modifications by: Monty
- last modification date: Jul 27 1999
-
- Handle windowing, overlap-add, etc of the PCM vectors. This is made
- more amusing by Vorbis' current two allowed block sizes (512 and 2048
- elements/channel).
-
- Vorbis manipulates the dynamic range of the incoming PCM data
- envelope to minimise time-domain energy leakage from percussive and
- plosive waveforms being quantized in the MDCT domain.
+ function: single-block PCM analysis mode dispatch
********************************************************************/
-#include <stdlib.h>
+#include <stdio.h>
#include <string.h>
-#include "codec.h"
-
-/* pcm accumulator and multipliers
- examples (not exhaustive):
-
- <-------------- lW----------------->
- <--------------- W ---------------->
-: .....|..... _______________ |
-: .''' | '''_--- | |\ |
-:.....''' |_____--- '''......| | \_______|
-:.................|__________________|_______|__|______|
- |<------ Sl ------>| > Sr < |endW
- |beginSl |endSl | |endSr
- |beginW |endlW |beginSr
- mult[0] mult[n]
-
-
- |< lW >|
- <--------------- W ---------------->
- | | .. ______________ |
- | | ' `/ | ---_ |
- |___.'___/`. | ---_____|
- |_______|__|_______|_________________|
- | >|Sl|< |<------ Sr ----->|endW
- | | |endSl |beginSr |endSr
- |beginW | |endlW
- mult[0] |beginSl mult[n]
-
- <-------------- lW----------------->
- |<-W-->|
-: .............. __ | |
-: .''' |`/ \ | |
-:.....''' |/`...\|...|
-:.........................|__||__|___|
- |Sl||Sr|endW
- | || |endSr
- | ||beginSr
- | |endSl
- |beginSl
- |beginW
- mult[0]
- mult[n]
-*/
-
-/* arbitrary settings and spec-mandated numbers get filled in here */
-int vorbis_analysis_init(vorbis_dsp_state *v,vorbis_info *vi){
- memset(v,0,sizeof(vorbis_dsp_state));
- v->samples_per_envelope_step=64;
- v->block_size[0]=512;
- v->block_size[1]=2048;
-
- /* v->window[0][0][0]=vorbis_window(v->block_size[0],
- v->block_size[0]/2,v->block_size[0]/2);
- v->window[1][0][0]=vorbis_window(v->block_size[1],
- v->block_size[0]/2,v->block_size[0]/2);
- v->window[1][0][1]=vorbis_window(v->block_size[1],
- v->block_size[0]/2,v->block_size[1]/2);
- v->window[1][1][0]=vorbis_window(v->block_size[1],
- v->block_size[1]/2,v->block_size[0]/2);
- v->window[1][1][1]=vorbis_window(v->block_size[1],
- v->block_size[1]/2,v->block_size[1]/2);*/
-
- /* initialize the storage vectors to a decent size greater than the
- minimum */
-
- v->pcm_storage=8192; /* we'll assume later that we have
- a minimum of twice the blocksize of
- accumulated samples in analysis */
- v->pcm_channels=v->vi.channels=vi->channels;
- v->pcm=malloc(vi->channels*sizeof(double *));
- v->pcmret=malloc(vi->channels*sizeof(double *));
- {
- int i;
- for(i=0;i<vi->channels;i++)
- v->pcm[i]=calloc(v->pcm_storage,sizeof(double));
- }
-
- /* Initialize the envelope multiplier storage */
-
- v->envelope_storage=v->pcm_storage/v->samples_per_envelope_step;
- v->envelope_channels=vi->channels;
- v->deltas=calloc(v->envelope_channels,sizeof(double *));
- v->multipliers=calloc(v->envelope_channels,sizeof(int *));
- {
- int i;
- for(i=0;i<v->envelope_channels;i++){
- v->deltas[i]=calloc(v->envelope_storage,sizeof(double));
- v->multipliers[i]=calloc(v->envelope_storage,sizeof(int));
- }
+#include <math.h>
+#include <ogg/ogg.h>
+#include "vorbis/codec.h"
+#include "codec_internal.h"
+#include "registry.h"
+#include "scales.h"
+#include "os.h"
+#include "misc.h"
+
+/* decides between modes, dispatches to the appropriate mapping. */
+int vorbis_analysis(vorbis_block *vb, ogg_packet *op){
+ int ret,i;
+ vorbis_block_internal *vbi=vb->internal;
+
+ vb->glue_bits=0;
+ vb->time_bits=0;
+ vb->floor_bits=0;
+ vb->res_bits=0;
+
+ /* first things first. Make sure encode is ready */
+ for(i=0;i<PACKETBLOBS;i++)
+ oggpack_reset(vbi->packetblob[i]);
+
+ /* we only have one mapping type (0), and we let the mapping code
+ itself figure out what soft mode to use. This allows easier
+ bitrate management */
+
+ if((ret=_mapping_P[0]->forward(vb)))
+ return(ret);
+
+ if(op){
+ if(vorbis_bitrate_managed(vb))
+ /* The app is using a bitmanaged mode... but not using the
+ bitrate management interface. */
+ return(OV_EINVAL);
+
+ op->packet=oggpack_get_buffer(&vb->opb);
+ op->bytes=oggpack_bytes(&vb->opb);
+ op->b_o_s=0;
+ op->e_o_s=vb->eofflag;
+ op->granulepos=vb->granulepos;
+ op->packetno=vb->sequence; /* for sake of completeness */
}
-
- /* all 1 (large block) or 0 (small block) */
- /* explicitly set for the sake of clarity */
- v->lW=0; /* previous window size */
- v->W=0; /* current window size */
-
- /* all vector indexes; multiples of samples_per_envelope_step */
- v->centerW=v->block_size[1]/2;
-
- v->pcm_current=v->centerW;
- v->envelope_current=v->centerW/v->samples_per_envelope_step;
return(0);
}
-void vorbis_analysis_clear(vorbis_dsp_state *v){
- int i,j,k;
- if(v){
- for(i=0;i<2;i++)
- for(j=0;j<2;j++)
- for(k=0;k<2;k++)
- if(v->window[i][j][k])free(v->window[i][j][k]);
- if(v->pcm){
- for(i=0;i<v->pcm_channels;i++)
- if(v->pcm[i])free(v->pcm[i]);
- free(v->pcm);
- free(v->pcmret);
- }
- if(v->deltas){
- for(i=0;i<v->envelope_channels;i++)
- if(v->deltas[i])free(v->deltas[i]);
- free(v->deltas);
- }
- if(v->multipliers){
- for(i=0;i<v->envelope_channels;i++)
- if(v->multipliers[i])free(v->multipliers[i]);
- free(v->multipliers);
+#ifdef ANALYSIS
+int analysis_noisy=1;
+
+/* there was no great place to put this.... */
+void _analysis_output_always(char *base,int i,float *v,int n,int bark,int dB,ogg_int64_t off){
+ int j;
+ FILE *of;
+ char buffer[80];
+
+ sprintf(buffer,"%s_%d.m",base,i);
+ of=fopen(buffer,"w");
+
+ if(!of)perror("failed to open data dump file");
+
+ for(j=0;j<n;j++){
+ if(bark){
+ float b=toBARK((4000.f*j/n)+.25);
+ fprintf(of,"%f ",b);
+ }else
+ if(off!=0)
+ fprintf(of,"%f ",(double)(j+off)/8000.);
+ else
+ fprintf(of,"%f ",(double)j);
+
+ if(dB){
+ float val;
+ if(v[j]==0.)
+ val=-140.;
+ else
+ val=todB(v+j);
+ fprintf(of,"%f\n",val);
+ }else{
+ fprintf(of,"%f\n",v[j]);
}
- memset(v,0,sizeof(vorbis_dsp_state));
}
+ fclose(of);
}
-/* call with val==0 to set eof */
-double **vorbis_analysis_buffer(vorbis_dsp_state *v, int vals){
- int i;
- if(vals<=0){
- /* We're encoding the end of the stream. Just make sure we have
- [at least] a full block of zeroes at the end. */
- v->eofflag=v->pcm_current;
- v->pcm_current+=v->block_size[1]*2;
- vals=0;
- }
-
- /* Do we have enough storage space for the requested buffer? If not,
- expand the PCM (and envelope) storage */
-
- if(v->pcm_current+vals>=v->pcm_storage){
- v->pcm_storage=v->pcm_current+vals*2;
- v->envelope_storage=v->pcm_storage/v->samples_per_envelope_step;
-
- for(i=0;i<v->pcm_channels;i++){
- v->pcm[i]=realloc(v->pcm[i],v->pcm_storage*sizeof(double));
- v->deltas[i]=realloc(v->deltas[i],v->envelope_storage*sizeof(double));
- v->multipliers[i]=realloc(v->multipliers[i],
- v->envelope_storage*sizeof(double));
-
- }
- }
-
- if(vals<=0){
- /* We're encoding the end of the stream. Just make sure we have
- [at least] a full block of zeroes at the end. */
-
- for(i=0;i<v->pcm_channels;i++)
- memset(v->pcm[i]+v->eofflag,0,
- (v->pcm_current-v->eofflag)*sizeof(double));
- }
-
- for(i=0;i<v->pcm_channels;i++)
- v->pcmret[i]=v->pcm[i]+v->pcm_current;
-
- return(v->pcmret);
-}
-
-int vorbis_analysis_wrote(vorbis_dsp_state *v, int vals){
- if(v->pcm_current+vals>v->pcm_storage)
- return(-1);
-
- v->pcm_current+=vals;
- return(0);
-}
-
-int vorbis_block_init(vorbis_dsp_state *v, vorbis_block *vb){
- int i;
- vb->pcm_storage=v->block_size[1];
- vb->pcm_channels=v->pcm_channels;
- vb->mult_storage=v->block_size[1]/v->samples_per_envelope_step;
- vb->mult_channels=v->envelope_channels;
-
- vb->pcm=malloc(vb->pcm_channels*sizeof(double *));
- for(i=0;i<vb->pcm_channels;i++)
- vb->pcm[i]=malloc(vb->pcm_storage*sizeof(double));
-
- vb->mult=malloc(vb->mult_channels*sizeof(int *));
- for(i=0;i<vb->mult_channels;i++)
- vb->mult[i]=malloc(vb->mult_storage*sizeof(int));
- return(0);
+void _analysis_output(char *base,int i,float *v,int n,int bark,int dB,
+ ogg_int64_t off){
+ if(analysis_noisy)_analysis_output_always(base,i,v,n,bark,dB,off);
}
-int vorbis_block_clear(vorbis_block *vb){
- int i;
- if(vb->pcm){
- for(i=0;i<vb->pcm_channels;i++)
- free(vb->pcm[i]);
- free(vb->pcm);
- }
- if(vb->mult){
- for(i=0;i<vb->mult_channels;i++)
- free(vb->mult[i]);
- free(vb->mult);
- }
- memset(vb,0,sizeof(vorbis_block));
- return(0);
-}
-
-/* do the deltas, envelope shaping, pre-echo and determine the size of
- the next block on which to continue analysis */
-int vorbis_analysis_block(vorbis_dsp_state *v,vorbis_block *vb){
- int i;
- long beginW=v->centerW-v->block_size[v->W]/2,centerNext;
- long beginM=beginW/v->samples_per_envelope_step;
+#endif
- /* check to see if we're done... */
- if(v->eofflag==-1)return(0);
- /* if we have any unfilled envelope blocks for which we have PCM
- data, fill them up in before proceeding. */
- if(v->pcm_current/v->samples_per_envelope_step>v->envelope_current){
- _va_envelope_deltas(v);
- _va_envelope_multipliers(v);
- }
-
- /* By our invariant, we have lW, W and centerW set. Search for
- the next boundary so we can determine nW (the next window size)
- which lets us compute the shape of the current block's window */
- /* overconserve for now; any block with a non-placeholder multiplier
- should be minimal size. We can be greedy and only look at nW size */
-
- if(v->W)
- /* this is a long window; we start the search forward of centerW
- because that's the fastest we could react anyway */
- i=v->centerW+v->block_size[1]/4-v->block_size[0]/4;
- else
- /* short window. Search from centerW */
- i=v->centerW;
- i/=v->samples_per_envelope_step;
- for(;i<v->envelope_storage;i++)if(v->multipliers[i])break;
-
- if(i<v->envelope_storage){
- /* Ooo, we hit a multiplier. Is it beyond the boundary to make the
- upcoming block large ? */
- long largebound;
- if(v->W)
- largebound=v->centerW+v->block_size[1];
- else
- largebound=v->centerW+v->block_size[0]/4+v->block_size[1]*3/4;
- largebound/=v->samples_per_envelope_step;
- if(i>=largebound)
- v->nW=1;
- else
- v->nW=0;
- }else{
- /* Assume maximum; if the block is incomplete given current
- buffered data, this will be detected below */
- v->nW=1;
- }
-
- /* Do we actually have enough data *now* for the next block? The
- reason to check is that if we had no multipliers, that could
- simply been due to running out of data. In that case, we don;t
- know the size of the next block for sure and we need that now to
- figure out the window shape of this block */
-
- {
- long blockbound=centerNext+v->block_size[v->nW]/2;
- if(v->pcm_current<blockbound)return(0); /* not enough data yet */
- }
-
- /* fill in the block */
- vb->lW=v->lW;
- vb->W=v->W;
- vb->nW=v->nW;
- vb->vd=v;
-
- vb->pcmend=v->block_size[v->W];
- vb->multend=vb->pcmend / v->samples_per_envelope_step;
-
- if(v->pcm_channels!=vb->pcm_channels ||
- v->block_size[1]!=vb->pcm_storage ||
- v->envelope_channels!=vb->mult_channels){
-
- /* Storage not initialized or initilized for some other codec
- instance with different settings */
-
- vorbis_block_clear(vb);
- vorbis_block_init(v,vb);
- }
-
- /* copy the vectors */
- for(i=0;i<v->pcm_channels;i++)
- memcpy(vb->pcm[i],v->pcm[i]+beginW,v->block_size[v->W]*sizeof(double));
- for(i=0;i<v->envelope_channels;i++)
- memcpy(vb->mult[i],v->multipliers[i]+beginM,v->block_size[v->W]/
- v->samples_per_envelope_step*sizeof(int));
-
- vb->frameno=v->frame;
-
- /* handle eof detection: eof==0 means that we've not yet received EOF
- eof>0 marks the last 'real' sample in pcm[]
- eof<0 'no more to do'; doesn't get here */
-
- if(v->eofflag){
- long endW=beginW+v->block_size[v->W];
- if(endW>=v->eofflag){
- v->eofflag=-1;
- vb->eofflag=1;
- }
- }
-
- /* advance storage vectors and clean up */
- {
- int new_centerNext=v->block_size[1]/2;
- int movementW=centerNext-new_centerNext;
- int movementM=movementW/v->samples_per_envelope_step;
-
- for(i=0;i<v->pcm_channels;i++)
- memmove(v->pcm[i],v->pcm[i]+movementW,
- (v->pcm_current-movementW)*sizeof(double));
-
- for(i=0;i<v->envelope_channels;i++){
- memmove(v->deltas[i],v->deltas[i]+movementM,
- (v->envelope_current-movementM)*sizeof(double));
- memmove(v->multipliers[i],v->multipliers[i]+movementM,
- (v->envelope_current-movementM)*sizeof(int));
- }
-
- v->pcm_current-=movementW;
- v->envelope_current-=movementM;
-
- v->lW=v->W;
- v->W=v->nW;
- v->centerW=new_centerNext;
-
- v->frame++;
- v->samples+=movementW;
- }
-
- /* done */
- return(1);
-}
-
-
-
-
-
-
-
-
-
-
-int vorbis_analysis_packetout(vorbis_dsp_state *v, vorbis_block *vb,
- ogg_packet *op){
-
- /* find block's envelope vector and apply it */
-
-
- /* the real analysis begins; forward MDCT with window */
-
-
- /* Noise floor, resolution floor */
-
- /* encode the floor into LSP; get the actual floor back for quant */
-
- /* use noise floor, res floor for culling, actual floor for quant */
-
- /* encode residue */
-
-}
projects / platform / upstream / libvorbis.git / blobdiff