External projects with established upstream are no longer part of this source tree

1 files changed, 0 insertions, 252 deletions

diff --git a/contrib/vorbis/lib/bitrate.c b/contrib/vorbis/lib/bitrate.c
deleted file mode 100644
index 9605514..0000000
--- a/contrib/vorbis/lib/bitrate.c
+++ /dev/null
@@ -1,252 +0,0 @@
-/********************************************************************
- *                                                                  *
- * 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 http://www.xiph.org/                  *
- *                                                                  *
- ********************************************************************
-
- function: bitrate tracking and management
-
- ********************************************************************/
-
-#include <stdlib.h>
-#include <string.h>
-#include <math.h>
-#include <ogg/ogg.h>
-#include "vorbis/codec.h"
-#include "codec_internal.h"
-#include "os.h"
-#include "misc.h"
-#include "bitrate.h"
-
-/* compute bitrate tracking setup  */
-void vorbis_bitrate_init(vorbis_info *vi,bitrate_manager_state *bm){
-  codec_setup_info *ci=vi->codec_setup;
-  bitrate_manager_info *bi=&ci->bi;
-
-  memset(bm,0,sizeof(*bm));
-
-  if(bi && (bi->reservoir_bits>0)){
-    long ratesamples=vi->rate;
-    int  halfsamples=ci->blocksizes[0]>>1;
-
-    bm->short_per_long=ci->blocksizes[1]/ci->blocksizes[0];
-    bm->managed=1;
-
-    bm->avg_bitsper= rint(1.*bi->avg_rate*halfsamples/ratesamples);
-    bm->min_bitsper= rint(1.*bi->min_rate*halfsamples/ratesamples);
-    bm->max_bitsper= rint(1.*bi->max_rate*halfsamples/ratesamples);
-
-    bm->avgfloat=PACKETBLOBS/2;
-
-    /* not a necessary fix, but one that leads to a more balanced
-       typical initialization */
-    {
-      long desired_fill=bi->reservoir_bits*bi->reservoir_bias;
-      bm->minmax_reservoir=desired_fill;
-      bm->avg_reservoir=desired_fill;
-    }
-
-  }
-}
-
-void vorbis_bitrate_clear(bitrate_manager_state *bm){
-  memset(bm,0,sizeof(*bm));
-  return;
-}
-
-int vorbis_bitrate_managed(vorbis_block *vb){
-  vorbis_dsp_state      *vd=vb->vd;
-  private_state         *b=vd->backend_state;
-  bitrate_manager_state *bm=&b->bms;
-
-  if(bm && bm->managed)return(1);
-  return(0);
-}
-
-/* finish taking in the block we just processed */
-int vorbis_bitrate_addblock(vorbis_block *vb){
-  vorbis_block_internal *vbi=vb->internal;
-  vorbis_dsp_state      *vd=vb->vd;
-  private_state         *b=vd->backend_state;
-  bitrate_manager_state *bm=&b->bms;
-  vorbis_info           *vi=vd->vi;
-  codec_setup_info      *ci=vi->codec_setup;
-  bitrate_manager_info  *bi=&ci->bi;
-
-  int  choice=rint(bm->avgfloat);
-  long this_bits=oggpack_bytes(vbi->packetblob[choice])*8;
-  long min_target_bits=(vb->W?bm->min_bitsper*bm->short_per_long:bm->min_bitsper);
-  long max_target_bits=(vb->W?bm->max_bitsper*bm->short_per_long:bm->max_bitsper);
-  int  samples=ci->blocksizes[vb->W]>>1;
-  long desired_fill=bi->reservoir_bits*bi->reservoir_bias;
-  if(!bm->managed){
-    /* not a bitrate managed stream, but for API simplicity, we'll
-       buffer the packet to keep the code path clean */
-
-    if(bm->vb)return(-1); /* one has been submitted without
-                             being claimed */
-    bm->vb=vb;
-    return(0);
-  }
-
-  bm->vb=vb;
-
-  /* look ahead for avg floater */
-  if(bm->avg_bitsper>0){
-    double slew=0.;
-    long avg_target_bits=(vb->W?bm->avg_bitsper*bm->short_per_long:bm->avg_bitsper);
-    double slewlimit= 15./bi->slew_damp;
-
-    /* choosing a new floater:
-       if we're over target, we slew down
-       if we're under target, we slew up
-
-       choose slew as follows: look through packetblobs of this frame
-       and set slew as the first in the appropriate direction that
-       gives us the slew we want.  This may mean no slew if delta is
-       already favorable.
-
-       Then limit slew to slew max */
-
-    if(bm->avg_reservoir+(this_bits-avg_target_bits)>desired_fill){
-      while(choice>0 && this_bits>avg_target_bits &&
-            bm->avg_reservoir+(this_bits-avg_target_bits)>desired_fill){
-        choice--;
-        this_bits=oggpack_bytes(vbi->packetblob[choice])*8;
-      }
-    }else if(bm->avg_reservoir+(this_bits-avg_target_bits)<desired_fill){
-      while(choice+1<PACKETBLOBS && this_bits<avg_target_bits &&
-            bm->avg_reservoir+(this_bits-avg_target_bits)<desired_fill){
-        choice++;
-        this_bits=oggpack_bytes(vbi->packetblob[choice])*8;
-      }
-    }
-
-    slew=rint(choice-bm->avgfloat)/samples*vi->rate;
-    if(slew<-slewlimit)slew=-slewlimit;
-    if(slew>slewlimit)slew=slewlimit;
-    choice=rint(bm->avgfloat+= slew/vi->rate*samples);
-    this_bits=oggpack_bytes(vbi->packetblob[choice])*8;
-  }
-
-
-
-  /* enforce min(if used) on the current floater (if used) */
-  if(bm->min_bitsper>0){
-    /* do we need to force the bitrate up? */
-    if(this_bits<min_target_bits){
-      while(bm->minmax_reservoir-(min_target_bits-this_bits)<0){
-        choice++;
-        if(choice>=PACKETBLOBS)break;
-        this_bits=oggpack_bytes(vbi->packetblob[choice])*8;
-      }
-    }
-  }
-
-  /* enforce max (if used) on the current floater (if used) */
-  if(bm->max_bitsper>0){
-    /* do we need to force the bitrate down? */
-    if(this_bits>max_target_bits){
-      while(bm->minmax_reservoir+(this_bits-max_target_bits)>bi->reservoir_bits){
-        choice--;
-        if(choice<0)break;
-        this_bits=oggpack_bytes(vbi->packetblob[choice])*8;
-      }
-    }
-  }
-
-  /* Choice of packetblobs now made based on floater, and min/max
-     requirements. Now boundary check extreme choices */
-
-  if(choice<0){
-    /* choosing a smaller packetblob is insufficient to trim bitrate.
-       frame will need to be truncated */
-    long maxsize=(max_target_bits+(bi->reservoir_bits-bm->minmax_reservoir))/8;
-    bm->choice=choice=0;
-
-    if(oggpack_bytes(vbi->packetblob[choice])>maxsize){
-
-      oggpack_writetrunc(vbi->packetblob[choice],maxsize*8);
-      this_bits=oggpack_bytes(vbi->packetblob[choice])*8;
-    }
-  }else{
-    long minsize=(min_target_bits-bm->minmax_reservoir+7)/8;
-    if(choice>=PACKETBLOBS)
-      choice=PACKETBLOBS-1;
-
-    bm->choice=choice;
-
-    /* prop up bitrate according to demand. pad this frame out with zeroes */
-    minsize-=oggpack_bytes(vbi->packetblob[choice]);
-    while(minsize-->0)oggpack_write(vbi->packetblob[choice],0,8);
-    this_bits=oggpack_bytes(vbi->packetblob[choice])*8;
-
-  }
-
-  /* now we have the final packet and the final packet size.  Update statistics */
-  /* min and max reservoir */
-  if(bm->min_bitsper>0 || bm->max_bitsper>0){
-
-    if(max_target_bits>0 && this_bits>max_target_bits){
-      bm->minmax_reservoir+=(this_bits-max_target_bits);
-    }else if(min_target_bits>0 && this_bits<min_target_bits){
-      bm->minmax_reservoir+=(this_bits-min_target_bits);
-    }else{
-      /* inbetween; we want to take reservoir toward but not past desired_fill */
-      if(bm->minmax_reservoir>desired_fill){
-        if(max_target_bits>0){ /* logical bulletproofing against initialization state */
-          bm->minmax_reservoir+=(this_bits-max_target_bits);
-          if(bm->minmax_reservoir<desired_fill)bm->minmax_reservoir=desired_fill;
-        }else{
-          bm->minmax_reservoir=desired_fill;
-        }
-      }else{
-        if(min_target_bits>0){ /* logical bulletproofing against initialization state */
-          bm->minmax_reservoir+=(this_bits-min_target_bits);
-          if(bm->minmax_reservoir>desired_fill)bm->minmax_reservoir=desired_fill;
-        }else{
-          bm->minmax_reservoir=desired_fill;
-        }
-      }
-    }
-  }
-
-  /* avg reservoir */
-  if(bm->avg_bitsper>0){
-    long avg_target_bits=(vb->W?bm->avg_bitsper*bm->short_per_long:bm->avg_bitsper);
-    bm->avg_reservoir+=this_bits-avg_target_bits;
-  }
-
-  return(0);
-}
-
-int vorbis_bitrate_flushpacket(vorbis_dsp_state *vd,ogg_packet *op){
-  private_state         *b=vd->backend_state;
-  bitrate_manager_state *bm=&b->bms;
-  vorbis_block          *vb=bm->vb;
-  int                    choice=PACKETBLOBS/2;
-  if(!vb)return 0;
-
-  if(op){
-    vorbis_block_internal *vbi=vb->internal;
-
-    if(vorbis_bitrate_managed(vb))
-      choice=bm->choice;
-
-    op->packet=oggpack_get_buffer(vbi->packetblob[choice]);
-    op->bytes=oggpack_bytes(vbi->packetblob[choice]);
-    op->b_o_s=0;
-    op->e_o_s=vb->eofflag;
-    op->granulepos=vb->granulepos;
-    op->packetno=vb->sequence; /* for sake of completeness */
-  }
-
-  bm->vb=0;
-  return(1);
-}