diff --git a/external/celt-0.11.1/fixed_c5x.h b/external/celt-0.11.1/fixed_c5x.h
deleted file mode 100644
index 7e2aa32..0000000
--- a/external/celt-0.11.1/fixed_c5x.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/* Copyright (C) 2003 Jean-Marc Valin */
-/**
-   @file fixed_c5x.h
-   @brief Fixed-point operations for the TI C5x DSP family
-*/
-/*
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions
-   are met:
-   
-   - Redistributions of source code must retain the above copyright
-   notice, this list of conditions and the following disclaimer.
-   
-   - Redistributions in binary form must reproduce the above copyright
-   notice, this list of conditions and the following disclaimer in the
-   documentation and/or other materials provided with the distribution.
-   
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
-   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#ifndef FIXED_C5X_H
-#define FIXED_C5X_H
-
-#include "dsplib.h"
-
-#undef IMUL32
-static inline long IMUL32(long i, long j)
-{
-   long ac0, ac1;
-   ac0 = _lmpy(i>>16,j);
-   ac1 = ac0 + _lmpy(i,j>>16);
-   return _lmpyu(i,j) + (ac1<<16);
-}
-
-#undef MAX16
-#define MAX16(a,b) _max(a,b)
-
-#undef MIN16
-#define MIN16(a,b) _min(a,b)
-
-#undef MAX32
-#define MAX32(a,b) _lmax(a,b)
-
-#undef MIN32
-#define MIN32(a,b) _lmin(a,b)
-
-#undef VSHR32
-#define VSHR32(a, shift) _lshl(a,-(shift))
-
-#undef MULT16_16_Q15
-#define MULT16_16_Q15(a,b) (_smpy(a,b))
-
-#undef MULT16_16SU 
-#define MULT16_16SU(a,b) _lmpysu(a,b)
-
-#undef MULT_16_16
-#define MULT_16_16(a,b) _lmpy(a,b)
-
-/* FIXME: This is technically incorrect and is bound to cause problems. Is there any cleaner solution? */
-#undef MULT16_32_Q15
-#define MULT16_32_Q15(a,b) ADD32(SHL(MULT16_16((a),SHR((b),16)),1), SHR(MULT16_16SU((a),(b)),15))
-
-
-#define celt_ilog2(x) (30 - _lnorm(x))
-#define OVERRIDE_CELT_ILOG2
-
-#define celt_maxabs16(x, len) MAX16(maxval((DATA *)x, len),-minval((DATA *)x, len))
-#define OVERRIDE_CELT_MAXABS16
-
-#define OVERRIDE_FIND_MAX16
-static inline int find_max16(celt_word16 *x, int len)
-{
-   DATA max_corr16 = -VERY_LARGE16;
-   DATA pitch16 = 0;
-   maxvec((DATA *)x, len, &max_corr16, &pitch16);
-   return pitch16;
-}
-
-#endif /* FIXED_C5X_H */
diff --git a/external/celt-0.11.1/fixed_c6x.h b/external/celt-0.11.1/fixed_c6x.h
deleted file mode 100644
index 47b851a..0000000
--- a/external/celt-0.11.1/fixed_c6x.h
+++ /dev/null
@@ -1,80 +0,0 @@
-/* Copyright (C) 2008 CSIRO */
-/**
-   @file fixed_c6x.h
-   @brief Fixed-point operations for the TI C6x DSP family
-*/
-/*
-   Redistribution and use in source and binary forms, with or without
-   modification, are permitted provided that the following conditions
-   are met:
-   
-   - Redistributions of source code must retain the above copyright
-   notice, this list of conditions and the following disclaimer.
-   
-   - Redistributions in binary form must reproduce the above copyright
-   notice, this list of conditions and the following disclaimer in the
-   documentation and/or other materials provided with the distribution.
-   
-   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
-   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-#ifndef FIXED_C6X_H
-#define FIXED_C6X_H
-
-#undef MULT16_16SU 
-#define MULT16_16SU(a,b) _mpysu(a,b)
-
-#undef MULT_16_16
-#define MULT_16_16(a,b) _mpy(a,b)
-
-#define celt_ilog2(x) (30 - _norm(x))
-#define OVERRIDE_CELT_ILOG2
-
-#undef MULT16_32_Q15
-#define MULT16_32_Q15(a,b) (_mpylill(a, b) >> 15)
-
-#if 0
-#include "dsplib.h"
-
-#undef MAX16
-#define MAX16(a,b) _max(a,b)
-
-#undef MIN16
-#define MIN16(a,b) _min(a,b)
-
-#undef MAX32
-#define MAX32(a,b) _lmax(a,b)
-
-#undef MIN32
-#define MIN32(a,b) _lmin(a,b)
-
-#undef VSHR32
-#define VSHR32(a, shift) _lshl(a,-(shift))
-
-#undef MULT16_16_Q15
-#define MULT16_16_Q15(a,b) (_smpy(a,b))
-
-#define celt_maxabs16(x, len) MAX16(maxval((DATA *)x, len),-minval((DATA *)x, len))
-#define OVERRIDE_CELT_MAXABS16
-
-#define OVERRIDE_FIND_MAX16
-static inline int find_max16(celt_word16 *x, int len)
-{
-   DATA max_corr16 = -VERY_LARGE16;
-   DATA pitch16 = 0;
-   maxvec((DATA *)x, len, &max_corr16, &pitch16);
-   return pitch16;
-}
-#endif
-
-#endif /* FIXED_C6X_H */
diff --git a/external/celt-0.11.1/COPYING b/external/celt-e18de77/COPYING
similarity index 100%
rename from external/celt-0.11.1/COPYING
rename to external/celt-e18de77/COPYING
diff --git a/external/celt-0.11.1/README b/external/celt-e18de77/README
similarity index 100%
rename from external/celt-0.11.1/README
rename to external/celt-e18de77/README
diff --git a/external/celt-e18de77/README.Win32 b/external/celt-e18de77/README.Win32
new file mode 100644
index 0000000..4694994
--- /dev/null
+++ b/external/celt-e18de77/README.Win32
@@ -0,0 +1,10 @@
+Here are a few tips for building on Windows:
+
+1) Create a config.h file that defines out things that defines out all the
+   features that your compiler doesn't understand (e.g. inline, restrict).
+   It also needs to define the CELT_BUILD macro
+
+2) Define the HAVE_CONFIG_H macro in the project build options (NOT in config.h)
+
+3) If you want things to be a lot easier, just use a compiler that supports
+   C99, such as gcc
diff --git a/external/celt-0.11.1/_kiss_fft_guts.h b/external/celt-e18de77/_kiss_fft_guts.h
similarity index 100%
rename from external/celt-0.11.1/_kiss_fft_guts.h
rename to external/celt-e18de77/_kiss_fft_guts.h
diff --git a/external/celt-0.11.1/arch.h b/external/celt-e18de77/arch.h
similarity index 100%
rename from external/celt-0.11.1/arch.h
rename to external/celt-e18de77/arch.h
diff --git a/external/celt-0.11.1/bands.c b/external/celt-e18de77/bands.c
similarity index 99%
rename from external/celt-0.11.1/bands.c
rename to external/celt-e18de77/bands.c
index 1948bae..d51feee 100644
--- a/external/celt-0.11.1/bands.c
+++ b/external/celt-e18de77/bands.c
@@ -1161,7 +1161,7 @@ static unsigned quant_band(int encode, const CELTMode *m, int i, celt_norm *X, c
 void quant_all_bands(int encode, const CELTMode *m, int start, int end,
       celt_norm *_X, celt_norm *_Y, unsigned char *collapse_masks, const celt_ener *bandE, int *pulses,
       int shortBlocks, int spread, int dual_stereo, int intensity, int *tf_res, int resynth,
-      celt_int32 total_bits, celt_int32 balance, ec_ctx *ec, int LM, int codedBands, ec_uint32 *seed)
+      celt_int32 total_bits, celt_int32 balance, ec_ctx *ec, int LM, int codedBands, celt_uint32 *seed)
 {
    int i;
    celt_int32 remaining_bits;
diff --git a/external/celt-0.11.1/bands.h b/external/celt-e18de77/bands.h
similarity index 99%
rename from external/celt-0.11.1/bands.h
rename to external/celt-e18de77/bands.h
index d0fcf1b..d3d3dc8 100644
--- a/external/celt-0.11.1/bands.h
+++ b/external/celt-e18de77/bands.h
@@ -84,7 +84,7 @@ void haar1(celt_norm *X, int N0, int stride);
 void quant_all_bands(int encode, const CELTMode *m, int start, int end,
       celt_norm * X, celt_norm * Y, unsigned char *collapse_masks, const celt_ener *bandE, int *pulses,
       int time_domain, int fold, int dual_stereo, int intensity, int *tf_res, int resynth,
-      celt_int32 total_bits, celt_int32 balance, ec_ctx *ec, int M, int codedBands, ec_uint32 *seed);
+      celt_int32 total_bits, celt_int32 balance, ec_ctx *ec, int M, int codedBands, celt_uint32 *seed);
 
 
 void stereo_decision(const CELTMode *m, celt_norm * restrict X, int *stereo_mode, int len, int M);
diff --git a/external/celt-0.11.1/celt.c b/external/celt-e18de77/celt.c
similarity index 91%
rename from external/celt-0.11.1/celt.c
rename to external/celt-e18de77/celt.c
index 23d2e30..671ac58 100644
--- a/external/celt-0.11.1/celt.c
+++ b/external/celt-e18de77/celt.c
@@ -61,6 +61,40 @@ static const unsigned char spread_icdf[4] = {25, 23, 2, 0};
 
 static const unsigned char tapset_icdf[3]={2,1,0};
 
+static const unsigned char toOpusTable[20] = {
+      0xE0, 0xE8, 0xF0, 0xF8,
+      0xC0, 0xC8, 0xD0, 0xD8,
+      0xA0, 0xA8, 0xB0, 0xB8,
+      0x00, 0x00, 0x00, 0x00,
+      0x80, 0x88, 0x90, 0x98,
+};
+
+static const unsigned char fromOpusTable[16] = {
+      0x80, 0x88, 0x90, 0x98,
+      0x40, 0x48, 0x50, 0x58,
+      0x20, 0x28, 0x30, 0x38,
+      0x00, 0x08, 0x10, 0x18
+};
+
+static inline int toOpus(unsigned char c)
+{
+   int ret=0;
+   if (c<0xA0)
+      ret = toOpusTable[c>>3];
+   if (ret == 0)
+      return -1;
+   else
+      return ret|(c&0x7);
+}
+
+static inline int fromOpus(unsigned char c)
+{
+   if (c<0x80)
+      return -1;
+   else
+      return fromOpusTable[(c>>3)-16] | (c&0x7);
+}
+
 #define COMBFILTER_MAXPERIOD 1024
 #define COMBFILTER_MINPERIOD 15
 
@@ -108,14 +142,16 @@ struct CELTEncoder {
 
    celt_int32 bitrate;
    int vbr;
+   int signalling;
    int constrained_vbr;      /* If zero, VBR can do whatever it likes with the rate */
+   int loss_rate;
 
    /* Everything beyond this point gets cleared on a reset */
 #define ENCODER_RESET_START rng
 
-   ec_uint32 rng;
+   celt_uint32 rng;
    int spread_decision;
-   int delayedIntra;
+   celt_word32 delayedIntra;
    int tonal_average;
    int lastCodedBands;
    int hf_average;
@@ -226,6 +262,8 @@ CELTEncoder *celt_encoder_init_custom(CELTEncoder *st, const CELTMode *mode, int
    st->upsample = 1;
    st->start = 0;
    st->end = st->mode->effEBands;
+   st->signalling = 1;
+
    st->constrained_vbr = 1;
    st->clip = 1;
 
@@ -317,9 +355,9 @@ static int transient_analysis(const celt_word32 * restrict in, int len, int C,
    for (i=0;i<N;i++)
    {
       int j;
-      float max_abs=0;
+      celt_word16 max_abs=0;
       for (j=0;j<block;j++)
-         max_abs = MAX32(max_abs, tmp[i*block+j]);
+         max_abs = MAX16(max_abs, ABS16(tmp[i*block+j]));
       bins[i] = max_abs;
    }
    for (i=0;i<N;i++)
@@ -687,8 +725,8 @@ static void tf_encode(int start, int end, int isTransient, int *tf_res, int LM,
    int tf_select_rsv;
    int tf_changed;
    int logp;
-   ec_uint32 budget;
-   ec_uint32 tell;
+   celt_uint32 budget;
+   celt_uint32 tell;
    budget = enc->storage*8;
    tell = ec_tell(enc);
    logp = isTransient ? 2 : 4;
@@ -727,8 +765,8 @@ static void tf_decode(int start, int end, int isTransient, int *tf_res, int LM,
    int tf_select_rsv;
    int tf_changed;
    int logp;
-   ec_uint32 budget;
-   ec_uint32 tell;
+   celt_uint32 budget;
+   celt_uint32 tell;
 
    budget = dec->storage*8;
    tell = ec_tell(dec);
@@ -915,13 +953,11 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
    int anti_collapse_rsv;
    int anti_collapse_on=0;
    int silence=0;
-   SAVE_STACK;
+   ALLOC_STACK;
 
    if (nbCompressedBytes<2 || pcm==NULL)
      return CELT_BAD_ARG;
 
-   /* Can't produce more than 1275 output bytes */
-   nbCompressedBytes = IMIN(nbCompressedBytes,1275);
    frame_size *= st->upsample;
    for (LM=0;LM<=st->mode->maxLM;LM++)
       if (st->mode->shortMdctSize<<LM==frame_size)
@@ -946,13 +982,37 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
       tell=ec_tell(enc);
       nbFilledBytes=(tell+4)>>3;
    }
+
+   if (st->signalling && enc==NULL)
+   {
+      int tmp = (st->mode->effEBands-st->end)>>1;
+      st->end = IMAX(1, st->mode->effEBands-tmp);
+      compressed[0] = tmp<<5;
+      compressed[0] |= LM<<3;
+      compressed[0] |= (C==2)<<2;
+      /* Convert "standard mode" to Opus header */
+      if (st->mode->Fs==48000 && st->mode->shortMdctSize==120)
+      {
+         int c0 = toOpus(compressed[0]);
+         if (c0<0)
+            return CELT_BAD_ARG;
+         compressed[0] = c0;
+      }
+      compressed++;
+      nbCompressedBytes--;
+   }
+
+   /* Can't produce more than 1275 output bytes */
+   nbCompressedBytes = IMIN(nbCompressedBytes,1275);
    nbAvailableBytes = nbCompressedBytes - nbFilledBytes;
 
    if (st->vbr)
    {
       celt_int32 den=st->mode->Fs>>BITRES;
       vbr_rate=(st->bitrate*frame_size+(den>>1))/den;
-      effectiveBytes = vbr_rate>>3;
+      if (st->signalling)
+         vbr_rate -= 8<<BITRES;
+      effectiveBytes = vbr_rate>>(3+BITRES);
    } else {
       celt_int32 tmp;
       vbr_rate = 0;
@@ -960,7 +1020,7 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
       if (tell>1)
          tmp += tell;
       nbCompressedBytes = IMAX(2, IMIN(nbCompressedBytes,
-            (tmp+4*st->mode->Fs)/(8*st->mode->Fs)));
+            (tmp+4*st->mode->Fs)/(8*st->mode->Fs)-!!st->signalling));
       effectiveBytes = nbCompressedBytes;
    }
 
@@ -1083,6 +1143,12 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
          if (pitch_index > COMBFILTER_MAXPERIOD-2)
             pitch_index = COMBFILTER_MAXPERIOD-2;
          gain1 = MULT16_16_Q15(QCONST16(.7f,15),gain1);
+         if (st->loss_rate>2)
+            gain1 = HALF32(gain1);
+         if (st->loss_rate>4)
+            gain1 = HALF32(gain1);
+         if (st->loss_rate>8)
+            gain1 = 0;
          prefilter_tapset = st->tapset_decision;
       } else {
          gain1 = 0;
@@ -1238,7 +1304,7 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
    quant_coarse_energy(st->mode, st->start, st->end, effEnd, bandLogE,
          oldBandE, total_bits, error, enc,
          C, LM, nbAvailableBytes, st->force_intra,
-         &st->delayedIntra, st->complexity >= 4);
+         &st->delayedIntra, st->complexity >= 4, st->loss_rate);
 
    tf_encode(st->start, st->end, isTransient, tf_res, LM, tf_select, enc);
 
@@ -1366,17 +1432,23 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
      nbAvailableBytes = IMAX(min_allowed,nbAvailableBytes);
      nbAvailableBytes = IMIN(nbCompressedBytes,nbAvailableBytes+nbFilledBytes) - nbFilledBytes;
 
-     if(silence)
-     {
-       nbAvailableBytes = 2;
-       target = 2*8<<BITRES;
-     }
-
      /* By how much did we "miss" the target on that frame */
      delta = target - vbr_rate;
 
      target=nbAvailableBytes<<(BITRES+3);
 
+     /*If the frame is silent we don't adjust our drift, otherwise
+       the encoder will shoot to very high rates after hitting a
+       span of silence, but we do allow the bitres to refill.
+       This means that we'll undershoot our target in CVBR/VBR modes
+       on files with lots of silence. */
+     if(silence)
+     {
+       nbAvailableBytes = 2;
+       target = 2*8<<BITRES;
+       delta = 0;
+     }
+
      if (st->vbr_count < 970)
      {
         st->vbr_count++;
@@ -1603,9 +1675,12 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const celt_sig * pcm, i
       it's already filled with zeros */
    ec_enc_done(enc);
    
+   if (st->signalling)
+      nbCompressedBytes++;
+
    RESTORE_STACK;
    if (ec_get_error(enc))
-      return CELT_CORRUPTED_DATA;
+      return CELT_INTERNAL_ERROR;
    else
       return nbCompressedBytes;
 }
@@ -1618,7 +1693,6 @@ int celt_encode_with_ec_float(CELTEncoder * restrict st, const float * pcm, int
    int j, ret, C, N;
    VARDECL(celt_int16, in);
    ALLOC_STACK;
-   SAVE_STACK;
 
    if (pcm==NULL)
       return CELT_BAD_ARG;
@@ -1647,7 +1721,6 @@ int celt_encode_with_ec(CELTEncoder * restrict st, const celt_int16 * pcm, int f
    int j, ret, C, N;
    VARDECL(celt_sig, in);
    ALLOC_STACK;
-   SAVE_STACK;
 
    if (pcm==NULL)
       return CELT_BAD_ARG;
@@ -1688,14 +1761,6 @@ int celt_encoder_ctl(CELTEncoder * restrict st, int request, ...)
    va_start(ap, request);
    switch (request)
    {
-      case CELT_GET_MODE_REQUEST:
-      {
-         const CELTMode ** value = va_arg(ap, const CELTMode**);
-         if (value==0)
-            goto bad_arg;
-         *value=st->mode;
-      }
-      break;
       case CELT_SET_COMPLEXITY_REQUEST:
       {
          int value = va_arg(ap, celt_int32);
@@ -1729,6 +1794,14 @@ int celt_encoder_ctl(CELTEncoder * restrict st, int request, ...)
          st->force_intra = value==0;
       }
       break;
+      case CELT_SET_LOSS_PERC_REQUEST:
+      {
+         int value = va_arg(ap, celt_int32);
+         if (value<0 || value>100)
+            goto bad_arg;
+         st->loss_rate = value;
+      }
+      break;
       case CELT_SET_VBR_CONSTRAINT_REQUEST:
       {
          celt_int32 value = va_arg(ap, celt_int32);
@@ -1775,6 +1848,22 @@ int celt_encoder_ctl(CELTEncoder * restrict st, int request, ...)
          st->clip = value;
       }
       break;
+#ifdef OPUS_BUILD
+      case CELT_SET_SIGNALLING_REQUEST:
+      {
+         celt_int32 value = va_arg(ap, celt_int32);
+         st->signalling = value;
+      }
+      break;
+      case CELT_GET_MODE_REQUEST:
+      {
+         const CELTMode ** value = va_arg(ap, const CELTMode**);
+         if (value==0)
+            goto bad_arg;
+         *value=st->mode;
+      }
+      break;
+#endif
       default:
          goto bad_request;
    }
@@ -1806,11 +1895,13 @@ struct CELTDecoder {
 
    int downsample;
    int start, end;
+   int signalling;
 
    /* Everything beyond this point gets cleared on a reset */
 #define DECODER_RESET_START rng
 
-   ec_uint32 rng;
+   celt_uint32 rng;
+   int error;
    int last_pitch_index;
    int loss_count;
    int postfilter_period;
@@ -1824,10 +1915,10 @@ struct CELTDecoder {
    
    celt_sig _decode_mem[1]; /* Size = channels*(DECODE_BUFFER_SIZE+mode->overlap) */
    /* celt_word16 lpc[],  Size = channels*LPC_ORDER */
-   /* celt_word16 oldEBands[], Size = channels*mode->nbEBands */
-   /* celt_word16 oldLogE[], Size = channels*mode->nbEBands */
-   /* celt_word16 oldLogE2[], Size = channels*mode->nbEBands */
-   /* celt_word16 backgroundLogE[], Size = channels*mode->nbEBands */
+   /* celt_word16 oldEBands[], Size = 2*mode->nbEBands */
+   /* celt_word16 oldLogE[], Size = 2*mode->nbEBands */
+   /* celt_word16 oldLogE2[], Size = 2*mode->nbEBands */
+   /* celt_word16 backgroundLogE[], Size = 2*mode->nbEBands */
 };
 
 int celt_decoder_get_size(int channels)
@@ -1841,7 +1932,7 @@ int celt_decoder_get_size_custom(const CELTMode *mode, int channels)
    int size = sizeof(struct CELTDecoder)
             + (channels*(DECODE_BUFFER_SIZE+mode->overlap)-1)*sizeof(celt_sig)
             + channels*LPC_ORDER*sizeof(celt_word16)
-            + 4*channels*mode->nbEBands*sizeof(celt_word16);
+            + 4*2*mode->nbEBands*sizeof(celt_word16);
    return size;
 }
 
@@ -1906,6 +1997,7 @@ CELTDecoder *celt_decoder_init_custom(CELTDecoder *st, const CELTMode *mode, int
    st->downsample = 1;
    st->start = 0;
    st->end = st->mode->effEBands;
+   st->signalling = 1;
 
    st->loss_count = 0;
 
@@ -1959,6 +2051,11 @@ static void celt_decode_lost(CELTDecoder * restrict st, celt_word16 * restrict p
       VARDECL(celt_norm, X);
       VARDECL(celt_ener, bandE);
       celt_uint32 seed;
+      int effEnd;
+
+      effEnd = st->end;
+      if (effEnd > st->mode->effEBands)
+         effEnd = st->mode->effEBands;
 
       ALLOC(freq, C*N, celt_sig); /**< Interleaved signal MDCTs */
       ALLOC(X, C*N, celt_norm);   /**< Interleaved normalised MDCTs */
@@ -1967,18 +2064,42 @@ static void celt_decode_lost(CELTDecoder * restrict st, celt_word16 * restrict p
       log2Amp(st->mode, st->start, st->end, bandE, backgroundLogE, C);
 
       seed = st->rng;
-      for (i=0;i<C*N;i++)
+      for (c=0;c<C;c++)
       {
-            seed = lcg_rand(seed);
-            X[i] = (celt_int32)(seed)>>20;
+         for (i=0;i<(st->mode->eBands[st->start]<<LM);i++)
+            X[c*N+i] = 0;
+         for (i=0;i<st->mode->effEBands;i++)
+         {
+            int j;
+            int boffs;
+            int blen;
+            boffs = N*c+(st->mode->eBands[i]<<LM);
+            blen = (st->mode->eBands[i+1]-st->mode->eBands[i])<<LM;
+            for (j=0;j<blen;j++)
+            {
+               seed = lcg_rand(seed);
+               X[boffs+j] = (celt_int32)(seed)>>20;
+            }
+            renormalise_vector(X+boffs, blen, Q15ONE);
+         }
+         for (i=(st->mode->eBands[st->end]<<LM);i<N;i++)
+            X[c*N+i] = 0;
       }
       st->rng = seed;
-      for (c=0;c<C;c++)
-         for (i=0;i<st->mode->nbEBands;i++)
-            renormalise_vector(X+N*c+(st->mode->eBands[i]<<LM), (st->mode->eBands[i+1]-st->mode->eBands[i])<<LM, Q15ONE);
 
-      denormalise_bands(st->mode, X, freq, bandE, st->mode->nbEBands, C, 1<<LM);
+      denormalise_bands(st->mode, X, freq, bandE, st->mode->effEBands, C, 1<<LM);
 
+      c=0; do
+         for (i=0;i<st->mode->eBands[st->start]<<LM;i++)
+            freq[c*N+i] = 0;
+      while (++c<C);
+      c=0; do {
+         int bound = st->mode->eBands[effEnd]<<LM;
+         if (st->downsample!=1)
+            bound = IMIN(bound, N/st->downsample);
+         for (i=bound;i<N;i++)
+            freq[c*N+i] = 0;
+      } while (++c<C);
       compute_inv_mdcts(st->mode, 0, freq, out_syn, overlap_mem, C, LM);
       plc = 0;
    } else if (st->loss_count == 0)
@@ -2194,20 +2315,10 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
    int anti_collapse_rsv;
    int anti_collapse_on=0;
    int silence;
-   const int C = CHANNELS(st->stream_channels);
-
-   SAVE_STACK;
-
-   if (len<0 || len>1275 || pcm==NULL)
-      return CELT_BAD_ARG;
+   int C = CHANNELS(st->stream_channels);
+   ALLOC_STACK;
 
    frame_size *= st->downsample;
-   for (LM=0;LM<=st->mode->maxLM;LM++)
-      if (st->mode->shortMdctSize<<LM==frame_size)
-         break;
-   if (LM>st->mode->maxLM)
-      return CELT_BAD_ARG;
-   M=1<<LM;
 
    c=0; do {
       decode_mem[c] = st->_decode_mem + c*(DECODE_BUFFER_SIZE+st->overlap);
@@ -2215,10 +2326,43 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
       overlap_mem[c] = decode_mem[c]+DECODE_BUFFER_SIZE;
    } while (++c<CC);
    lpc = (celt_word16*)(st->_decode_mem+(DECODE_BUFFER_SIZE+st->overlap)*CC);
-   oldBandE = lpc+CC*LPC_ORDER;
-   oldLogE = oldBandE + CC*st->mode->nbEBands;
-   oldLogE2 = oldLogE + CC*st->mode->nbEBands;
-   backgroundLogE = oldLogE2  + CC*st->mode->nbEBands;
+   oldBandE = lpc+LPC_ORDER;
+   oldLogE = oldBandE + 2*st->mode->nbEBands;
+   oldLogE2 = oldLogE + 2*st->mode->nbEBands;
+   backgroundLogE = oldLogE2  + 2*st->mode->nbEBands;
+
+   if (st->signalling && data!=NULL)
+   {
+      int data0=data[0];
+      /* Convert "standard mode" to Opus header */
+      if (st->mode->Fs==48000 && st->mode->shortMdctSize==120)
+      {
+         data0 = fromOpus(data0);
+         if (data0<0)
+            return CELT_CORRUPTED_DATA;
+      }
+      st->end = IMAX(1, st->mode->effEBands-2*(data0>>5));
+      LM = (data0>>3)&0x3;
+      C = 1 + ((data0>>2)&0x1);
+      data++;
+      len--;
+      if (LM>st->mode->maxLM)
+         return CELT_CORRUPTED_DATA;
+      if (frame_size < st->mode->shortMdctSize<<LM)
+         return CELT_BUFFER_TOO_SMALL;
+      else
+         frame_size = st->mode->shortMdctSize<<LM;
+   } else {
+      for (LM=0;LM<=st->mode->maxLM;LM++)
+         if (st->mode->shortMdctSize<<LM==frame_size)
+            break;
+      if (LM>st->mode->maxLM)
+         return CELT_BAD_ARG;
+   }
+   M=1<<LM;
+
+   if (len<0 || len>1275 || pcm==NULL)
+      return CELT_BAD_ARG;
 
    N = M*st->mode->shortMdctSize;
 
@@ -2226,40 +2370,36 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
    if (effEnd > st->mode->effEBands)
       effEnd = st->mode->effEBands;
 
-   ALLOC(freq, CC*N, celt_sig); /**< Interleaved signal MDCTs */
-   ALLOC(X, CC*N, celt_norm);   /**< Interleaved normalised MDCTs */
-   ALLOC(bandE, st->mode->nbEBands*CC, celt_ener);
+   ALLOC(freq, IMAX(CC,C)*N, celt_sig); /**< Interleaved signal MDCTs */
+   ALLOC(X, C*N, celt_norm);   /**< Interleaved normalised MDCTs */
+   ALLOC(bandE, st->mode->nbEBands*C, celt_ener);
    c=0; do
       for (i=0;i<M*st->mode->eBands[st->start];i++)
          X[c*N+i] = 0;
-   while (++c<CC);
+   while (++c<C);
    c=0; do   
       for (i=M*st->mode->eBands[effEnd];i<N;i++)
          X[c*N+i] = 0;
-   while (++c<CC);
+   while (++c<C);
 
    if (data == NULL || len<=1)
    {
       celt_decode_lost(st, pcm, N, LM);
       RESTORE_STACK;
-      return CELT_OK;
+      return frame_size/st->downsample;
    }
    if (len<0) {
      RESTORE_STACK;
      return CELT_BAD_ARG;
    }
-   
+
    if (dec == NULL)
    {
       ec_dec_init(&_dec,(unsigned char*)data,len);
       dec = &_dec;
    }
 
-   if (C>CC)
-   {
-      RESTORE_STACK;
-      return CELT_CORRUPTED_DATA;
-   } else if (C<CC)
+   if (C<CC)
    {
       for (i=0;i<st->mode->nbEBands;i++)
          oldBandE[i]=MAX16(oldBandE[i],oldBandE[st->mode->nbEBands+i]);
@@ -2395,7 +2535,7 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
          fine_quant, fine_priority, len*8-ec_tell(dec), dec, C);
 
    if (anti_collapse_on)
-      anti_collapse(st->mode, X, collapse_masks, LM, C, CC, N,
+      anti_collapse(st->mode, X, collapse_masks, LM, C, C, N,
             st->start, st->end, oldBandE, oldLogE, oldLogE2, pulses, st->rng);
 
    log2Amp(st->mode, st->start, st->end, bandE, oldBandE, C);
@@ -2436,6 +2576,11 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
       for (i=0;i<N;i++)
          freq[N+i] = freq[i];
    }
+   if (CC==1&&C==2)
+   {
+      for (i=0;i<N;i++)
+         freq[i] = HALF32(ADD32(freq[i],freq[N+i]));
+   }
 
    /* Compute inverse MDCTs */
    compute_inv_mdcts(st->mode, shortBlocks, freq, out_syn, overlap_mem, CC, LM);
@@ -2467,7 +2612,7 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
    }
 #endif /* ENABLE_POSTFILTER */
 
-   if (CC==2&&C==1) {
+   if (C==1) {
       for (i=0;i<st->mode->nbEBands;i++)
          oldBandE[st->mode->nbEBands+i]=oldBandE[i];
    }
@@ -2479,17 +2624,17 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
          oldBandE[c*st->mode->nbEBands+i]=0;
       for (i=st->end;i<st->mode->nbEBands;i++)
          oldBandE[c*st->mode->nbEBands+i]=0;
-   } while (++c<CC);
+   } while (++c<2);
    if (!isTransient)
    {
-      for (i=0;i<CC*st->mode->nbEBands;i++)
+      for (i=0;i<2*st->mode->nbEBands;i++)
          oldLogE2[i] = oldLogE[i];
-      for (i=0;i<CC*st->mode->nbEBands;i++)
+      for (i=0;i<2*st->mode->nbEBands;i++)
          oldLogE[i] = oldBandE[i];
-      for (i=0;i<CC*st->mode->nbEBands;i++)
+      for (i=0;i<2*st->mode->nbEBands;i++)
          backgroundLogE[i] = MIN16(backgroundLogE[i] + M*QCONST16(0.001f,DB_SHIFT), oldBandE[i]);
    } else {
-      for (i=0;i<CC*st->mode->nbEBands;i++)
+      for (i=0;i<2*st->mode->nbEBands;i++)
          oldLogE[i] = MIN16(oldLogE[i], oldBandE[i]);
    }
    st->rng = dec->rng;
@@ -2497,10 +2642,11 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
    deemphasis(out_syn, pcm, N, CC, st->downsample, st->mode->preemph, st->preemph_memD);
    st->loss_count = 0;
    RESTORE_STACK;
-   if (ec_tell(dec) > 8*len || ec_get_error(dec))
-      return CELT_CORRUPTED_DATA;
-   else
-      return CELT_OK;
+   if (ec_tell(dec) > 8*len)
+      return CELT_INTERNAL_ERROR;
+   if(ec_get_error(dec))
+      st->error = 1;
+   return frame_size/st->downsample;
 }
 
 #ifdef FIXED_POINT
@@ -2511,7 +2657,6 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
    int j, ret, C, N;
    VARDECL(celt_int16, out);
    ALLOC_STACK;
-   SAVE_STACK;
 
    if (pcm==NULL)
       return CELT_BAD_ARG;
@@ -2521,8 +2666,8 @@ int celt_decode_with_ec_float(CELTDecoder * restrict st, const unsigned char *da
    
    ALLOC(out, C*N, celt_int16);
    ret=celt_decode_with_ec(st, data, len, out, frame_size, dec);
-   if (ret==0)
-      for (j=0;j<C*N;j++)
+   if (ret>0)
+      for (j=0;j<C*ret;j++)
          pcm[j]=out[j]*(1.f/32768.f);
      
    RESTORE_STACK;
@@ -2536,7 +2681,6 @@ int celt_decode_with_ec(CELTDecoder * restrict st, const unsigned char *data, in
    int j, ret, C, N;
    VARDECL(celt_sig, out);
    ALLOC_STACK;
-   SAVE_STACK;
 
    if (pcm==NULL)
       return CELT_BAD_ARG;
@@ -2547,8 +2691,8 @@ int celt_decode_with_ec(CELTDecoder * restrict st, const unsigned char *data, in
 
    ret=celt_decode_with_ec_float(st, data, len, out, frame_size, dec);
 
-   if (ret==0)
-      for (j=0;j<C*N;j++)
+   if (ret>0)
+      for (j=0;j<C*ret;j++)
          pcm[j] = FLOAT2INT16 (out[j]);
    
    RESTORE_STACK;
@@ -2575,14 +2719,6 @@ int celt_decoder_ctl(CELTDecoder * restrict st, int request, ...)
    va_start(ap, request);
    switch (request)
    {
-      case CELT_GET_MODE_REQUEST:
-      {
-         const CELTMode ** value = va_arg(ap, const CELTMode**);
-         if (value==0)
-            goto bad_arg;
-         *value=st->mode;
-      }
-      break;
       case CELT_SET_START_BAND_REQUEST:
       {
          celt_int32 value = va_arg(ap, celt_int32);
@@ -2607,6 +2743,23 @@ int celt_decoder_ctl(CELTDecoder * restrict st, int request, ...)
          st->stream_channels = value;
       }
       break;
+      case CELT_GET_AND_CLEAR_ERROR_REQUEST:
+      {
+         int *value = va_arg(ap, int*);
+         if (value==NULL)
+            goto bad_arg;
+         *value=st->error;
+         st->error = 0;
+      }
+      break;
+      case CELT_GET_LOOKAHEAD_REQUEST:
+      {
+         int *value = va_arg(ap, int*);
+         if (value==NULL)
+            goto bad_arg;
+         *value = st->overlap/st->downsample;
+      }
+      break;
       case CELT_RESET_STATE:
       {
          CELT_MEMSET((char*)&st->DECODER_RESET_START, 0,
@@ -2614,6 +2767,22 @@ int celt_decoder_ctl(CELTDecoder * restrict st, int request, ...)
                ((char*)&st->DECODER_RESET_START - (char*)st));
       }
       break;
+#ifdef OPUS_BUILD
+      case CELT_GET_MODE_REQUEST:
+      {
+         const CELTMode ** value = va_arg(ap, const CELTMode**);
+         if (value==0)
+            goto bad_arg;
+         *value=st->mode;
+      }
+      break;
+      case CELT_SET_SIGNALLING_REQUEST:
+      {
+         celt_int32 value = va_arg(ap, celt_int32);
+         st->signalling = value;
+      }
+      break;
+#endif
       default:
          goto bad_request;
    }
@@ -2632,7 +2801,7 @@ const char *celt_strerror(int error)
    static const char *error_strings[8] = {
       "success",
       "invalid argument",
-      "invalid mode",
+      "buffer too small",
       "internal error",
       "corrupted stream",
       "request not implemented",
diff --git a/external/celt-e18de77/config.h b/external/celt-e18de77/config.h
new file mode 100644
index 0000000..4abd80d
--- /dev/null
+++ b/external/celt-e18de77/config.h
@@ -0,0 +1,27 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+#define CELT_BUILD            1
+
+#define restrict 
+#define inline __inline
+
+#define USE_ALLOCA            1
+
+/* Comment out the next line for floating-point code */
+//#define FIXED_POINT           1
+
+#define OPUS_BUILD            1
+
+/* Get rid of the CELT VS compile warnings */
+#if 1
+#pragma warning(disable : 4018)// signed/unsigned mismatch
+#pragma warning(disable : 4244)// conversion from 'double' to 'celt_word16', possible loss of data
+#pragma warning(disable : 4267)// conversion from 'size_t' to 'int', possible loss of data
+#pragma warning(disable : 4305)// truncation from 'double' to 'const float'
+#pragma warning(disable : 4311)// pointer truncation from 'char *' to 'long'
+#pragma warning(disable : 4554)// check operator precedence for possible error; use parentheses to clarify precedence
+#pragma warning(disable : 4996)// This function or variable may be unsafe. Consider using fopen_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.
+#endif
+
+#endif CONFIG_H
diff --git a/external/celt-0.11.1/cwrs.c b/external/celt-e18de77/cwrs.c
similarity index 99%
rename from external/celt-0.11.1/cwrs.c
rename to external/celt-e18de77/cwrs.c
index 40dcc55..21d278f 100644
--- a/external/celt-0.11.1/cwrs.c
+++ b/external/celt-e18de77/cwrs.c
@@ -42,7 +42,7 @@
    with frac bits of fractional precision.
   Tested for all possible 32-bit inputs with frac=4, where the maximum
    overestimation is 0.06254243 bits.*/
-int log2_frac(ec_uint32 val, int frac)
+int log2_frac(celt_uint32 val, int frac)
 {
   int l;
   l=EC_ILOG(val);
diff --git a/external/celt-0.11.1/cwrs.h b/external/celt-e18de77/cwrs.h
similarity index 97%
rename from external/celt-0.11.1/cwrs.h
rename to external/celt-e18de77/cwrs.h
index 1224a26..443213f 100644
--- a/external/celt-0.11.1/cwrs.h
+++ b/external/celt-e18de77/cwrs.h
@@ -35,7 +35,7 @@
 #include "entenc.h"
 #include "entdec.h"
 
-int log2_frac(ec_uint32 val, int frac);
+int log2_frac(celt_uint32 val, int frac);
 
 void get_required_bits(celt_int16 *bits, int N, int K, int frac);
 
diff --git a/external/celt-0.11.1/ecintrin.h b/external/celt-e18de77/ecintrin.h
similarity index 96%
rename from external/celt-0.11.1/ecintrin.h
rename to external/celt-e18de77/ecintrin.h
index 4591d07..5012917 100644
--- a/external/celt-0.11.1/ecintrin.h
+++ b/external/celt-e18de77/ecintrin.h
@@ -26,6 +26,7 @@
 */
 
 /*Some common macros for potential platform-specific optimization.*/
+#include "celt_types.h"
 #include <math.h>
 #include <limits.h>
 #if !defined(_ecintrin_H)
@@ -81,6 +82,9 @@
   All other code should use EC_ILOG() instead.*/
 #if defined(_MSC_VER)
 # include <intrin.h>
+/*In _DEBUG mode this is not an intrinsic by default.*/
+# pragma intrinsic(_BitScanReverse)
+
 static __inline int ec_bsr(unsigned long _x){
   unsigned long ret;
   _BitScanReverse(&ret,_x);
@@ -91,7 +95,7 @@ static __inline int ec_bsr(unsigned long _x){
 #elif defined(ENABLE_TI_DSPLIB)
 # include "dsplib.h"
 # define EC_CLZ0    (31)
-# define EC_CLZ(_x) (_lnorm(x))
+# define EC_CLZ(_x) (_lnorm(_x))
 #elif defined(__GNUC_PREREQ)
 # if __GNUC_PREREQ(3,4)
 #  if INT_MAX>=2147483647
@@ -111,6 +115,8 @@ static __inline int ec_bsr(unsigned long _x){
   When we need to, it can be special cased.*/
 # define EC_ILOG(_x) (EC_CLZ0-EC_CLZ(_x))
 #else
+int ec_ilog(celt_uint32 _v);
+
 # define EC_ILOG(_x) (ec_ilog(_x))
 #endif
 
diff --git a/external/celt-0.11.1/entcode.c b/external/celt-e18de77/entcode.c
similarity index 95%
rename from external/celt-0.11.1/entcode.c
rename to external/celt-e18de77/entcode.c
index 17d08df..0626e51 100644
--- a/external/celt-0.11.1/entcode.c
+++ b/external/celt-e18de77/entcode.c
@@ -34,7 +34,7 @@
 
 
 #if !defined(EC_CLZ)
-int ec_ilog(ec_uint32 _v){
+int ec_ilog(celt_uint32 _v){
   /*On a Pentium M, this branchless version tested as the fastest on
      1,000,000,000 random 32-bit integers, edging out a similar version with
      branches, and a 256-entry LUT version.*/
@@ -59,11 +59,11 @@ int ec_ilog(ec_uint32 _v){
 #endif
 
 
-ec_uint32 ec_tell_frac(ec_ctx *_this){
-  ec_uint32 nbits;
-  ec_uint32 r;
-  int       l;
-  int       i;
+celt_uint32 ec_tell_frac(ec_ctx *_this){
+  celt_uint32 nbits;
+  celt_uint32 r;
+  int         l;
+  int         i;
   /*To handle the non-integral number of bits still left in the encoder/decoder
      state, we compute the worst-case number of bits of val that must be
      encoded to ensure that the value is inside the range for any possible
diff --git a/external/celt-0.11.1/entcode.h b/external/celt-e18de77/entcode.h
similarity index 89%
rename from external/celt-0.11.1/entcode.h
rename to external/celt-e18de77/entcode.h
index 581a07b..f24e1c4 100644
--- a/external/celt-0.11.1/entcode.h
+++ b/external/celt-e18de77/entcode.h
@@ -35,8 +35,8 @@
 
 
 
-typedef celt_int32            ec_int32;
-typedef celt_uint32           ec_uint32;
+/*OPT: ec_window must be at least 32 bits, but if you have fast arithmetic on a
+   larger type, you can speed up the decoder by using it here.*/
 typedef celt_uint32           ec_window;
 typedef struct ec_ctx         ec_ctx;
 typedef struct ec_ctx         ec_enc;
@@ -44,8 +44,6 @@ typedef struct ec_ctx         ec_dec;
 
 
 
-/*OPT: This must be at least 32 bits, but if you have fast arithmetic on a
-   larger type, you can speed up the decoder by using it for ec_window.*/
 # define EC_WINDOW_SIZE ((int)sizeof(ec_window)*CHAR_BIT)
 
 /*The number of bits to use for the range-coded part of unsigned integers.*/
@@ -64,9 +62,9 @@ struct ec_ctx{
    /*Buffered input/output.*/
    unsigned char *buf;
    /*The size of the buffer.*/
-   ec_uint32      storage;
+   celt_uint32    storage;
    /*The offset at which the last byte containing raw bits was read/written.*/
-   ec_uint32      end_offs;
+   celt_uint32    end_offs;
    /*Bits that will be read from/written at the end.*/
    ec_window      end_window;
    /*Number of valid bits in end_window.*/
@@ -75,16 +73,16 @@ struct ec_ctx{
      This does not include partial bits currently in the range coder.*/
    int            nbits_total;
    /*The offset at which the next range coder byte will be read/written.*/
-   ec_uint32      offs;
+   celt_uint32    offs;
    /*The number of values in the current range.*/
-   ec_uint32      rng;
+   celt_uint32    rng;
    /*In the decoder: the difference between the top of the current range and
       the input value, minus one.
      In the encoder: the low end of the current range.*/
-   ec_uint32      val;
+   celt_uint32    val;
    /*In the decoder: the saved normalization factor from ec_decode().
      In the encoder: the number of oustanding carry propagating symbols.*/
-   ec_uint32      ext;
+   celt_uint32    ext;
    /*A buffered input/output symbol, awaiting carry propagation.*/
    int            rem;
    /*Nonzero if an error occurred.*/
@@ -97,7 +95,7 @@ static inline void ec_reset(ec_ctx *_this){
   _this->offs=_this->end_offs=0;
 }
 
-static inline ec_uint32 ec_range_bytes(ec_ctx *_this){
+static inline celt_uint32 ec_range_bytes(ec_ctx *_this){
   return _this->offs;
 }
 
@@ -125,8 +123,6 @@ static inline int ec_tell(ec_ctx *_this){
   Return: The number of bits scaled by 2**BITRES.
           This will always be slightly larger than the exact value (e.g., all
            rounding error is in the positive direction).*/
-ec_uint32 ec_tell_frac(ec_ctx *_this);
-
-int ec_ilog(ec_uint32 _v);
+celt_uint32 ec_tell_frac(ec_ctx *_this);
 
 #endif
diff --git a/external/celt-0.11.1/entdec.c b/external/celt-e18de77/entdec.c
similarity index 93%
rename from external/celt-0.11.1/entdec.c
rename to external/celt-e18de77/entdec.c
index f5676c6..8b4d2ee 100644
--- a/external/celt-0.11.1/entdec.c
+++ b/external/celt-e18de77/entdec.c
@@ -125,7 +125,7 @@ static void ec_dec_normalize(ec_dec *_this){
   }
 }
 
-void ec_dec_init(ec_dec *_this,unsigned char *_buf,ec_uint32 _storage){
+void ec_dec_init(ec_dec *_this,unsigned char *_buf,celt_uint32 _storage){
   _this->buf=_buf;
   _this->storage=_storage;
   _this->end_offs=0;
@@ -160,7 +160,7 @@ unsigned ec_decode_bin(ec_dec *_this,unsigned _bits){
 }
 
 void ec_dec_update(ec_dec *_this,unsigned _fl,unsigned _fh,unsigned _ft){
-  ec_uint32 s;
+  celt_uint32 s;
   s=IMUL32(_this->ext,_ft-_fh);
   _this->val-=s;
   _this->rng=_fl>0?IMUL32(_this->ext,_fh-_fl):_this->rng-s;
@@ -169,10 +169,10 @@ void ec_dec_update(ec_dec *_this,unsigned _fl,unsigned _fh,unsigned _ft){
 
 /*The probability of having a "one" is 1/(1<<_logp).*/
 int ec_dec_bit_logp(ec_dec *_this,unsigned _logp){
-  ec_uint32 r;
-  ec_uint32 d;
-  ec_uint32 s;
-  int       ret;
+  celt_uint32 r;
+  celt_uint32 d;
+  celt_uint32 s;
+  int         ret;
   r=_this->rng;
   d=_this->val;
   s=r>>_logp;
@@ -184,11 +184,11 @@ int ec_dec_bit_logp(ec_dec *_this,unsigned _logp){
 }
 
 int ec_dec_icdf(ec_dec *_this,const unsigned char *_icdf,unsigned _ftb){
-  ec_uint32 r;
-  ec_uint32 d;
-  ec_uint32 s;
-  ec_uint32 t;
-  int       ret;
+  celt_uint32 r;
+  celt_uint32 d;
+  celt_uint32 s;
+  celt_uint32 t;
+  int         ret;
   s=_this->rng;
   d=_this->val;
   r=s>>_ftb;
@@ -204,7 +204,7 @@ int ec_dec_icdf(ec_dec *_this,const unsigned char *_icdf,unsigned _ftb){
   return ret;
 }
 
-ec_uint32 ec_dec_uint(ec_dec *_this,ec_uint32 _ft){
+celt_uint32 ec_dec_uint(ec_dec *_this,celt_uint32 _ft){
   unsigned ft;
   unsigned s;
   int      ftb;
@@ -213,12 +213,12 @@ ec_uint32 ec_dec_uint(ec_dec *_this,ec_uint32 _ft){
   _ft--;
   ftb=EC_ILOG(_ft);
   if(ftb>EC_UINT_BITS){
-    ec_uint32 t;
+    celt_uint32 t;
     ftb-=EC_UINT_BITS;
     ft=(unsigned)(_ft>>ftb)+1;
     s=ec_decode(_this,ft);
     ec_dec_update(_this,s,s+1,ft);
-    t=(ec_uint32)s<<ftb|ec_dec_bits(_this,ftb);
+    t=(celt_uint32)s<<ftb|ec_dec_bits(_this,ftb);
     if(t<=_ft)return t;
     _this->error=1;
     return _ft;
@@ -231,10 +231,10 @@ ec_uint32 ec_dec_uint(ec_dec *_this,ec_uint32 _ft){
   }
 }
 
-ec_uint32 ec_dec_bits(ec_dec *_this,unsigned _bits){
-  ec_window window;
-  int       available;
-  ec_uint32 ret;
+celt_uint32 ec_dec_bits(ec_dec *_this,unsigned _bits){
+  ec_window   window;
+  int         available;
+  celt_uint32 ret;
   window=_this->end_window;
   available=_this->nend_bits;
   if(available<_bits){
@@ -244,7 +244,7 @@ ec_uint32 ec_dec_bits(ec_dec *_this,unsigned _bits){
     }
     while(available<=EC_WINDOW_SIZE-EC_SYM_BITS);
   }
-  ret=(ec_uint32)window&((ec_uint32)1<<_bits)-1;
+  ret=(celt_uint32)window&((celt_uint32)1<<_bits)-1;
   window>>=_bits;
   available-=_bits;
   _this->end_window=window;
diff --git a/external/celt-0.11.1/entdec.h b/external/celt-e18de77/entdec.h
similarity index 96%
rename from external/celt-0.11.1/entdec.h
rename to external/celt-e18de77/entdec.h
index 5119e0a..593979b 100644
--- a/external/celt-0.11.1/entdec.h
+++ b/external/celt-e18de77/entdec.h
@@ -35,7 +35,7 @@
 /*Initializes the decoder.
   _buf: The input buffer to use.
   Return: 0 on success, or a negative value on error.*/
-void ec_dec_init(ec_dec *_this,unsigned char *_buf,ec_uint32 _storage);
+void ec_dec_init(ec_dec *_this,unsigned char *_buf,celt_uint32 _storage);
 
 /*Calculates the cumulative frequency for the next symbol.
   This can then be fed into the probability model to determine what that
@@ -89,7 +89,7 @@ int ec_dec_icdf(ec_dec *_this,const unsigned char *_icdf,unsigned _ftb);
   _ft: The number of integers that can be decoded (one more than the max).
        This must be at least one, and no more than 2**32-1.
   Return: The decoded bits.*/
-ec_uint32 ec_dec_uint(ec_dec *_this,ec_uint32 _ft);
+celt_uint32 ec_dec_uint(ec_dec *_this,celt_uint32 _ft);
 
 /*Extracts a sequence of raw bits from the stream.
   The bits must have been encoded with ec_enc_bits().
@@ -97,6 +97,6 @@ ec_uint32 ec_dec_uint(ec_dec *_this,ec_uint32 _ft);
   _ftb: The number of bits to extract.
         This must be between 0 and 25, inclusive.
   Return: The decoded bits.*/
-ec_uint32 ec_dec_bits(ec_dec *_this,unsigned _ftb);
+celt_uint32 ec_dec_bits(ec_dec *_this,unsigned _ftb);
 
 #endif
diff --git a/external/celt-0.11.1/entenc.c b/external/celt-e18de77/entenc.c
similarity index 93%
rename from external/celt-0.11.1/entenc.c
rename to external/celt-e18de77/entenc.c
index 9297b5f..df649a6 100644
--- a/external/celt-0.11.1/entenc.c
+++ b/external/celt-e18de77/entenc.c
@@ -114,7 +114,7 @@ static void ec_enc_normalize(ec_enc *_this){
   }
 }
 
-void ec_enc_init(ec_enc *_this,unsigned char *_buf,ec_uint32 _size){
+void ec_enc_init(ec_enc *_this,unsigned char *_buf,celt_uint32 _size){
   _this->buf=_buf;
   _this->end_offs=0;
   _this->end_window=0;
@@ -131,7 +131,7 @@ void ec_enc_init(ec_enc *_this,unsigned char *_buf,ec_uint32 _size){
 }
 
 void ec_encode(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _ft){
-  ec_uint32 r;
+  celt_uint32 r;
   r=_this->rng/_ft;
   if(_fl>0){
     _this->val+=_this->rng-IMUL32(r,(_ft-_fl));
@@ -142,7 +142,7 @@ void ec_encode(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _ft){
 }
 
 void ec_encode_bin(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _bits){
-  ec_uint32 r;
+  celt_uint32 r;
   r=_this->rng>>_bits;
   if(_fl>0){
     _this->val+=_this->rng-IMUL32(r,((1<<_bits)-_fl));
@@ -154,9 +154,9 @@ void ec_encode_bin(ec_enc *_this,unsigned _fl,unsigned _fh,unsigned _bits){
 
 /*The probability of having a "one" is 1/(1<<_logp).*/
 void ec_enc_bit_logp(ec_enc *_this,int _val,unsigned _logp){
-  ec_uint32 r;
-  ec_uint32 s;
-  ec_uint32 l;
+  celt_uint32 r;
+  celt_uint32 s;
+  celt_uint32 l;
   r=_this->rng;
   l=_this->val;
   s=r>>_logp;
@@ -167,7 +167,7 @@ void ec_enc_bit_logp(ec_enc *_this,int _val,unsigned _logp){
 }
 
 void ec_enc_icdf(ec_enc *_this,int _s,const unsigned char *_icdf,unsigned _ftb){
-  ec_uint32 r;
+  celt_uint32 r;
   r=_this->rng>>_ftb;
   if(_s>0){
     _this->val+=_this->rng-IMUL32(r,_icdf[_s-1]);
@@ -177,7 +177,7 @@ void ec_enc_icdf(ec_enc *_this,int _s,const unsigned char *_icdf,unsigned _ftb){
   ec_enc_normalize(_this);
 }
 
-void ec_enc_uint(ec_enc *_this,ec_uint32 _fl,ec_uint32 _ft){
+void ec_enc_uint(ec_enc *_this,celt_uint32 _fl,celt_uint32 _ft){
   unsigned  ft;
   unsigned  fl;
   int       ftb;
@@ -190,12 +190,12 @@ void ec_enc_uint(ec_enc *_this,ec_uint32 _fl,ec_uint32 _ft){
     ft=(_ft>>ftb)+1;
     fl=(unsigned)(_fl>>ftb);
     ec_encode(_this,fl,fl+1,ft);
-    ec_enc_bits(_this,_fl&((ec_uint32)1<<ftb)-1,ftb);
+    ec_enc_bits(_this,_fl&((celt_uint32)1<<ftb)-1,ftb);
   }
   else ec_encode(_this,_fl,_fl+1,_ft+1);
 }
 
-void ec_enc_bits(ec_enc *_this,ec_uint32 _fl,unsigned _bits){
+void ec_enc_bits(ec_enc *_this,celt_uint32 _fl,unsigned _bits){
   ec_window window;
   int       used;
   window=_this->end_window;
@@ -231,14 +231,14 @@ void ec_enc_patch_initial_bits(ec_enc *_this,unsigned _val,unsigned _nbits){
   }
   else if(_this->rng<=EC_CODE_TOP>>shift){
     /*The renormalization loop has never been run.*/
-    _this->val=_this->val&~((ec_uint32)mask<<EC_CODE_SHIFT)|
-     (ec_uint32)_val<<EC_CODE_SHIFT+shift;
+    _this->val=_this->val&~((celt_uint32)mask<<EC_CODE_SHIFT)|
+     (celt_uint32)_val<<EC_CODE_SHIFT+shift;
   }
   /*The encoder hasn't even encoded _nbits of data yet.*/
   else _this->error=-1;
 }
 
-void ec_enc_shrink(ec_enc *_this,ec_uint32 _size){
+void ec_enc_shrink(ec_enc *_this,celt_uint32 _size){
   celt_assert(_this->offs+_this->end_offs<=_size);
   CELT_MOVE(_this->buf+_size-_this->end_offs,
    _this->buf+_this->storage-_this->end_offs,_this->end_offs);
@@ -246,11 +246,11 @@ void ec_enc_shrink(ec_enc *_this,ec_uint32 _size){
 }
 
 void ec_enc_done(ec_enc *_this){
-  ec_window window;
-  int       used;
-  ec_uint32 msk;
-  ec_uint32 end;
-  int       l;
+  ec_window   window;
+  int         used;
+  celt_uint32 msk;
+  celt_uint32 end;
+  int         l;
   /*We output the minimum number of bits that ensures that the symbols encoded
      thus far will be decoded correctly regardless of the bits that follow.*/
   l=EC_CODE_BITS-EC_ILOG(_this->rng);
diff --git a/external/celt-0.11.1/entenc.h b/external/celt-e18de77/entenc.h
similarity index 95%
rename from external/celt-0.11.1/entenc.h
rename to external/celt-e18de77/entenc.h
index e64e887..7e30617 100644
--- a/external/celt-0.11.1/entenc.h
+++ b/external/celt-e18de77/entenc.h
@@ -35,7 +35,7 @@
 /*Initializes the encoder.
   _buf:  The buffer to store output bytes in.
   _size: The size of the buffer, in chars.*/
-void ec_enc_init(ec_enc *_this,unsigned char *_buf,ec_uint32 _size);
+void ec_enc_init(ec_enc *_this,unsigned char *_buf,celt_uint32 _size);
 /*Encodes a symbol given its frequency information.
   The frequency information must be discernable by the decoder, assuming it
    has read only the previous symbols from the stream.
@@ -70,13 +70,13 @@ void ec_enc_icdf(ec_enc *_this,int _s,const unsigned char *_icdf,unsigned _ftb);
   _fl: The integer to encode.
   _ft: The number of integers that can be encoded (one more than the max).
        This must be at least one, and no more than 2**32-1.*/
-void ec_enc_uint(ec_enc *_this,ec_uint32 _fl,ec_uint32 _ft);
+void ec_enc_uint(ec_enc *_this,celt_uint32 _fl,celt_uint32 _ft);
 
 /*Encodes a sequence of raw bits in the stream.
   _fl:  The bits to encode.
   _ftb: The number of bits to encode.
         This must be between 0 and 25, inclusive.*/
-void ec_enc_bits(ec_enc *_this,ec_uint32 _fl,unsigned _ftb);
+void ec_enc_bits(ec_enc *_this,celt_uint32 _fl,unsigned _ftb);
 
 /*Overwrites a few bits at the very start of an existing stream, after they
    have already been encoded.
@@ -102,7 +102,7 @@ void ec_enc_patch_initial_bits(ec_enc *_this,unsigned _val,unsigned _nbits);
   _size: The number of bytes in the new buffer.
          This must be large enough to contain the bits already written, and
           must be no larger than the existing size.*/
-void ec_enc_shrink(ec_enc *_this,ec_uint32 _size);
+void ec_enc_shrink(ec_enc *_this,celt_uint32 _size);
 
 /*Indicates that there are no more symbols to encode.
   All reamining output bytes are flushed to the output buffer.
diff --git a/external/celt-0.11.1/fixed_generic.h b/external/celt-e18de77/fixed_generic.h
similarity index 100%
rename from external/celt-0.11.1/fixed_generic.h
rename to external/celt-e18de77/fixed_generic.h
diff --git a/external/celt-0.11.1/float_cast.h b/external/celt-e18de77/float_cast.h
similarity index 100%
rename from external/celt-0.11.1/float_cast.h
rename to external/celt-e18de77/float_cast.h
diff --git a/external/celt-0.11.1/header.c b/external/celt-e18de77/header.c
similarity index 97%
rename from external/celt-0.11.1/header.c
rename to external/celt-e18de77/header.c
index b31a5b7..37b11bf 100644
--- a/external/celt-0.11.1/header.c
+++ b/external/celt-e18de77/header.c
@@ -55,7 +55,8 @@ int celt_header_init(CELTHeader *header, const CELTMode *m, int frame_size, int
    CELT_COPY(header->codec_id, "CELT    ", 8);
    CELT_COPY(header->codec_version, "experimental        ", 20);
 
-   celt_mode_info(m, CELT_GET_BITSTREAM_VERSION, &header->version_id);
+   /* FIXME: Set that to zero when we freeze */
+   header->version_id = 0x80001000;
    header->header_size = 56;
    header->sample_rate = m->Fs;
    header->nb_channels = channels;
diff --git a/external/celt-0.11.1/include/celt/celt.h b/external/celt-e18de77/include/celt/celt.h
similarity index 94%
rename from external/celt-0.11.1/include/celt/celt.h
rename to external/celt-e18de77/include/celt/celt.h
index eaa2622..2bbf506 100644
--- a/external/celt-0.11.1/include/celt/celt.h
+++ b/external/celt-e18de77/include/celt/celt.h
@@ -50,7 +50,8 @@ extern "C" {
 #endif
 
 #define _celt_check_int(x) (((void)((x) == (celt_int32)0)), (celt_int32)(x))
-#define _celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (CELTMode**)(ptr)))
+#define _celt_check_mode_ptr_ptr(ptr) ((ptr) + ((ptr) - (const CELTMode**)(ptr)))
+#define _celt_check_int_ptr(ptr) ((ptr) + ((ptr) - (int*)(ptr)))
 
 /* Error codes */
 /** No error */
@@ -58,7 +59,7 @@ extern "C" {
 /** An (or more) invalid argument (e.g. out of range) */
 #define CELT_BAD_ARG          -1
 /** The mode struct passed is invalid */
-#define CELT_INVALID_MODE     -2
+#define CELT_BUFFER_TOO_SMALL -2
 /** An internal error was detected */
 #define CELT_INTERNAL_ERROR   -3
 /** The data passed (e.g. compressed data to decoder) is corrupted */
@@ -70,10 +71,8 @@ extern "C" {
 /** Memory allocation has failed */
 #define CELT_ALLOC_FAIL       -7
 
-/* Requests */
-#define CELT_GET_MODE_REQUEST    1
-/** Get the CELTMode used by an encoder or decoder */
-#define CELT_GET_MODE(x) CELT_GET_MODE_REQUEST, _celt_check_mode_ptr_ptr(x)
+
+/* Encoder/decoder Requests */
 
 #define CELT_SET_COMPLEXITY_REQUEST    2
 /** Controls the complexity from 0-10 (int) */
@@ -91,8 +90,8 @@ extern "C" {
 /** Set the target VBR rate in bits per second(int); 0=CBR (default) */
 #define CELT_SET_BITRATE(x) CELT_SET_BITRATE_REQUEST, _celt_check_int(x)
 
-/** Reset the encoder/decoder memories to zero*/
 #define CELT_RESET_STATE_REQUEST        8
+/** Reset the encoder/decoder memories to zero*/
 #define CELT_RESET_STATE       CELT_RESET_STATE_REQUEST
 
 #define CELT_SET_VBR_CONSTRAINT_REQUEST 10
@@ -104,22 +103,25 @@ extern "C" {
 #define CELT_SET_INPUT_CLIPPING_REQUEST    14
 #define CELT_SET_INPUT_CLIPPING(x) CELT_SET_INPUT_CLIPPING_REQUEST, _celt_check_int(x)
 
+#define CELT_GET_AND_CLEAR_ERROR_REQUEST   15
+#define CELT_GET_AND_CLEAR_ERROR(x) CELT_GET_AND_CLEAR_ERROR_REQUEST, _celt_check_int_ptr(x)
+
+#define CELT_GET_LOOKAHEAD_REQUEST   17
+#define CELT_GET_LOOKAHEAD(x) CELT_GET_LOOKAHEAD_REQUEST, _celt_check_int_ptr(x)
+
+#define CELT_SET_CHANNELS_REQUEST    18
+#define CELT_SET_CHANNELS(x) CELT_SET_CHANNELS_REQUEST, _celt_check_int(x)
+
+#define CELT_SET_LOSS_PERC_REQUEST    20
+#define CELT_SET_LOSS_PERC(x) CELT_SET_LOSS_PERC_REQUEST, _celt_check_int(x)
+
+/* Internal */
 #define CELT_SET_START_BAND_REQUEST    10000
 #define CELT_SET_START_BAND(x) CELT_SET_START_BAND_REQUEST, _celt_check_int(x)
 
 #define CELT_SET_END_BAND_REQUEST    10001
 #define CELT_SET_END_BAND(x) CELT_SET_END_BAND_REQUEST, _celt_check_int(x)
 
-#define CELT_SET_CHANNELS_REQUEST    10002
-#define CELT_SET_CHANNELS(x) CELT_SET_CHANNELS_REQUEST, _celt_check_int(x)
-
-/** GET the lookahead used in the current mode */
-#define CELT_GET_LOOKAHEAD    1001
-/** GET the sample rate used in the current mode */
-#define CELT_GET_SAMPLE_RATE  1003
-
-/** GET the bit-stream version for compatibility check */
-#define CELT_GET_BITSTREAM_VERSION 2000
 
 
 /** Contains the state of an encoder. One encoder state is needed 
@@ -163,9 +165,6 @@ EXPORT CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error);
 */
 EXPORT void celt_mode_destroy(CELTMode *mode);
 
-/** Query information from a mode */
-EXPORT int celt_mode_info(const CELTMode *mode, int request, celt_int32 *value);
-
 /* Encoder stuff */
 
 EXPORT int celt_encoder_get_size(int channels);
diff --git a/external/celt-0.11.1/include/celt/celt_header.h b/external/celt-e18de77/include/celt/celt_header.h
similarity index 100%
rename from external/celt-0.11.1/include/celt/celt_header.h
rename to external/celt-e18de77/include/celt/celt_header.h
diff --git a/external/celt-0.11.1/include/celt/celt_types.h b/external/celt-e18de77/include/celt/celt_types.h
similarity index 100%
rename from external/celt-0.11.1/include/celt/celt_types.h
rename to external/celt-e18de77/include/celt/celt_types.h
diff --git a/external/celt-0.11.1/kiss_fft.c b/external/celt-e18de77/kiss_fft.c
similarity index 99%
rename from external/celt-0.11.1/kiss_fft.c
rename to external/celt-e18de77/kiss_fft.c
index adc617a..4909231 100644
--- a/external/celt-0.11.1/kiss_fft.c
+++ b/external/celt-e18de77/kiss_fft.c
@@ -644,10 +644,13 @@ kiss_fft_state *kiss_fft_alloc(int nfft,void * mem,size_t * lenmem )
 
 void kiss_fft_free(const kiss_fft_state *cfg)
 {
-   celt_free((celt_int16*)cfg->bitrev);
-   if (cfg->shift < 0)
-      celt_free((kiss_twiddle_cpx*)cfg->twiddles);
-   celt_free((kiss_fft_state*)cfg);
+   if (cfg)
+   {
+      celt_free((celt_int16*)cfg->bitrev);
+      if (cfg->shift < 0)
+         celt_free((kiss_twiddle_cpx*)cfg->twiddles);
+      celt_free((kiss_fft_state*)cfg);
+   }
 }
 
 #endif /* CUSTOM_MODES */
diff --git a/external/celt-0.11.1/kiss_fft.h b/external/celt-e18de77/kiss_fft.h
similarity index 100%
rename from external/celt-0.11.1/kiss_fft.h
rename to external/celt-e18de77/kiss_fft.h
diff --git a/external/celt-0.11.1/laplace.c b/external/celt-e18de77/laplace.c
similarity index 100%
rename from external/celt-0.11.1/laplace.c
rename to external/celt-e18de77/laplace.c
diff --git a/external/celt-0.11.1/laplace.h b/external/celt-e18de77/laplace.h
similarity index 100%
rename from external/celt-0.11.1/laplace.h
rename to external/celt-e18de77/laplace.h
diff --git a/external/celt-0.11.1/mathops.c b/external/celt-e18de77/mathops.c
similarity index 100%
rename from external/celt-0.11.1/mathops.c
rename to external/celt-e18de77/mathops.c
diff --git a/external/celt-0.11.1/mathops.h b/external/celt-e18de77/mathops.h
similarity index 100%
rename from external/celt-0.11.1/mathops.h
rename to external/celt-e18de77/mathops.h
diff --git a/external/celt-0.11.1/mdct.c b/external/celt-e18de77/mdct.c
similarity index 100%
rename from external/celt-0.11.1/mdct.c
rename to external/celt-e18de77/mdct.c
diff --git a/external/celt-0.11.1/mdct.h b/external/celt-e18de77/mdct.h
similarity index 100%
rename from external/celt-0.11.1/mdct.h
rename to external/celt-e18de77/mdct.h
diff --git a/external/celt-0.11.1/mfrngcod.h b/external/celt-e18de77/mfrngcod.h
similarity index 92%
rename from external/celt-0.11.1/mfrngcod.h
rename to external/celt-e18de77/mfrngcod.h
index 9a065f0..5e7a5bb 100644
--- a/external/celt-0.11.1/mfrngcod.h
+++ b/external/celt-e18de77/mfrngcod.h
@@ -40,17 +40,17 @@
 /*Bits to shift by to move a symbol into the high-order position.*/
 # define EC_CODE_SHIFT (EC_CODE_BITS-EC_SYM_BITS-1)
 /*Carry bit of the high-order range symbol.*/
-# define EC_CODE_TOP   (((ec_uint32)1U)<<EC_CODE_BITS-1)
+# define EC_CODE_TOP   (((celt_uint32)1U)<<EC_CODE_BITS-1)
 /*Low-order bit of the high-order range symbol.*/
 # define EC_CODE_BOT   (EC_CODE_TOP>>EC_SYM_BITS)
 /*Code for which propagating carries are possible.*/
-# define EC_CODE_CARRY (((ec_uint32)EC_SYM_MAX)<<EC_CODE_SHIFT)
+# define EC_CODE_CARRY (((celt_uint32)EC_SYM_MAX)<<EC_CODE_SHIFT)
 /*The number of bits available for the last, partial symbol in the code field.*/
 # define EC_CODE_EXTRA ((EC_CODE_BITS-2)%EC_SYM_BITS+1)
 /*A mask for the bits available in the coding buffer.
   This allows different platforms to use a variable with more bits, if it is
    convenient.
   We will only use EC_CODE_BITS of it.*/
-# define EC_CODE_MASK  ((((ec_uint32)1U)<<EC_CODE_BITS-1)-1<<1|1)
+# define EC_CODE_MASK  ((((celt_uint32)1U)<<EC_CODE_BITS-1)-1<<1|1)
 
 #endif
diff --git a/external/celt-0.11.1/modes.c b/external/celt-e18de77/modes.c
similarity index 94%
rename from external/celt-0.11.1/modes.c
rename to external/celt-e18de77/modes.c
index 7649143..968bc2f 100644
--- a/external/celt-0.11.1/modes.c
+++ b/external/celt-e18de77/modes.c
@@ -74,25 +74,6 @@ static const unsigned char band_allocation[] = {
 #endif
 
 
-int celt_mode_info(const CELTMode *mode, int request, celt_int32 *value)
-{
-   switch (request)
-   {
-      case CELT_GET_LOOKAHEAD:
-         *value = mode->overlap;
-         break;
-      case CELT_GET_BITSTREAM_VERSION:
-         *value = CELT_BITSTREAM_VERSION;
-         break;
-      case CELT_GET_SAMPLE_RATE:
-         *value = mode->Fs;
-         break;
-      default:
-         return CELT_UNIMPLEMENTED;
-   }
-   return CELT_OK;
-}
-
 #ifdef CUSTOM_MODES
 
 /* Defining 25 critical bands for the full 0-20 kHz audio bandwidth
@@ -243,23 +224,12 @@ static void compute_allocation_table(CELTMode *mode)
 CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
 {
    int i;
-   CELTMode *mode=NULL;
 #ifdef CUSTOM_MODES
+   CELTMode *mode=NULL;
    int res;
    celt_word16 *window;
    celt_int16 *logN;
    int LM;
-#endif
-#ifdef STDIN_TUNING
-   scanf("%d ", &MIN_BINS);
-   scanf("%d ", &BITALLOC_SIZE);
-   band_allocation = celt_alloc(sizeof(int)*BARK_BANDS*BITALLOC_SIZE);
-   for (i=0;i<BARK_BANDS*BITALLOC_SIZE;i++)
-   {
-      scanf("%d ", band_allocation+i);
-   }
-#endif
-#ifdef CUSTOM_MODES
    ALLOC_STACK;
 #if !defined(VAR_ARRAYS) && !defined(USE_ALLOCA)
    if (global_stack==NULL)
@@ -308,7 +278,7 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
    if ((celt_int32)frame_size*1000 < Fs)
    {
       if (error)
-         *error = CELT_INVALID_MODE;
+         *error = CELT_BAD_ARG;
       return NULL;
    }
 
@@ -330,7 +300,7 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
    if ((celt_int32)(frame_size>>LM)*300 > Fs)
    {
       if (error)
-         *error = CELT_INVALID_MODE;
+         *error = CELT_BAD_ARG;
       return NULL;
    }
 
@@ -425,7 +395,7 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
    return mode;
 failure: 
    if (error)
-      *error = CELT_INVALID_MODE;
+      *error = CELT_ALLOC_FAIL;
    if (mode!=NULL)
       celt_mode_destroy(mode);
    return NULL;
diff --git a/external/celt-0.11.1/modes.h b/external/celt-e18de77/modes.h
similarity index 92%
rename from external/celt-0.11.1/modes.h
rename to external/celt-e18de77/modes.h
index 8ea39e9..9e0384e 100644
--- a/external/celt-0.11.1/modes.h
+++ b/external/celt-e18de77/modes.h
@@ -100,6 +100,13 @@ struct CELTMode {
 #endif
 
 #ifdef OPUS_BUILD
+#define CELT_SET_SIGNALLING_REQUEST    10003
+#define CELT_SET_SIGNALLING(x) CELT_SET_SIGNALLING_REQUEST, _celt_check_int(x)
+
+#define CELT_GET_MODE_REQUEST    10004
+/** Get the CELTMode used by an encoder or decoder */
+#define CELT_GET_MODE(x) CELT_GET_MODE_REQUEST, _celt_check_mode_ptr_ptr(x)
+
 /* Prototypes for _ec versions of the encoder/decoder calls (not public) */
 int celt_encode_with_ec(CELTEncoder * restrict st, const celt_int16 * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
 int celt_encode_with_ec_float(CELTEncoder * restrict st, const float * pcm, int frame_size, unsigned char *compressed, int nbCompressedBytes, ec_enc *enc);
diff --git a/external/celt-0.11.1/os_support.h b/external/celt-e18de77/os_support.h
similarity index 100%
rename from external/celt-0.11.1/os_support.h
rename to external/celt-e18de77/os_support.h
diff --git a/external/celt-0.11.1/pitch.c b/external/celt-e18de77/pitch.c
similarity index 100%
rename from external/celt-0.11.1/pitch.c
rename to external/celt-e18de77/pitch.c
diff --git a/external/celt-0.11.1/pitch.h b/external/celt-e18de77/pitch.h
similarity index 100%
rename from external/celt-0.11.1/pitch.h
rename to external/celt-e18de77/pitch.h
diff --git a/external/celt-0.11.1/plc.c b/external/celt-e18de77/plc.c
similarity index 100%
rename from external/celt-0.11.1/plc.c
rename to external/celt-e18de77/plc.c
diff --git a/external/celt-0.11.1/plc.h b/external/celt-e18de77/plc.h
similarity index 100%
rename from external/celt-0.11.1/plc.h
rename to external/celt-e18de77/plc.h
diff --git a/external/celt-0.11.1/quant_bands.c b/external/celt-e18de77/quant_bands.c
similarity index 94%
rename from external/celt-0.11.1/quant_bands.c
rename to external/celt-e18de77/quant_bands.c
index 9aa05fe..f33bf3f 100644
--- a/external/celt-0.11.1/quant_bands.c
+++ b/external/celt-e18de77/quant_bands.c
@@ -139,7 +139,7 @@ static const unsigned char e_prob_model[4][2][42] = {
 
 static const unsigned char small_energy_icdf[3]={2,1,0};
 
-static int intra_decision(const celt_word16 *eBands, celt_word16 *oldEBands, int start, int end, int len, int C)
+static celt_word32 loss_distortion(const celt_word16 *eBands, celt_word16 *oldEBands, int start, int end, int len, int C)
 {
    int c, i;
    celt_word32 dist = 0;
@@ -150,12 +150,12 @@ static int intra_decision(const celt_word16 *eBands, celt_word16 *oldEBands, int
          dist = MAC16_16(dist, d,d);
       }
    } while (++c<C);
-   return SHR32(dist,2*DB_SHIFT-4) > 2*C*(end-start);
+   return MIN32(200,SHR32(dist,2*DB_SHIFT-4));
 }
 
 static int quant_coarse_energy_impl(const CELTMode *m, int start, int end,
       const celt_word16 *eBands, celt_word16 *oldEBands,
-      ec_int32 budget, ec_int32 tell,
+      celt_int32 budget, celt_int32 tell,
       const unsigned char *prob_model, celt_word16 *error, ec_enc *enc,
       int _C, int LM, int intra, celt_word16 max_decay)
 {
@@ -258,9 +258,9 @@ static int quant_coarse_energy_impl(const CELTMode *m, int start, int end,
 }
 
 void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
-      const celt_word16 *eBands, celt_word16 *oldEBands, ec_uint32 budget,
+      const celt_word16 *eBands, celt_word16 *oldEBands, celt_uint32 budget,
       celt_word16 *error, ec_enc *enc, int _C, int LM, int nbAvailableBytes,
-      int force_intra, int *delayedIntra, int two_pass)
+      int force_intra, celt_word32 *delayedIntra, int two_pass, int loss_rate)
 {
    const int C = CHANNELS(_C);
    int intra;
@@ -268,15 +268,15 @@ void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
    VARDECL(celt_word16, oldEBands_intra);
    VARDECL(celt_word16, error_intra);
    ec_enc enc_start_state;
-   ec_uint32 tell;
+   celt_uint32 tell;
    int badness1=0;
+   celt_int32 intra_bias;
+   celt_word32 new_distortion;
    SAVE_STACK;
 
-   intra = force_intra || (*delayedIntra && nbAvailableBytes > (end-start)*C);
-   if (/*shortBlocks || */intra_decision(eBands, oldEBands, start, effEnd, m->nbEBands, C))
-      *delayedIntra = 1;
-   else
-      *delayedIntra = 0;
+   intra = force_intra || (!two_pass && *delayedIntra>2*C*(end-start) && nbAvailableBytes > (end-start)*C);
+   intra_bias = ((budget**delayedIntra*loss_rate)/(C*512));
+   new_distortion = loss_distortion(eBands, oldEBands, start, effEnd, m->nbEBands, C);
 
    tell = ec_tell(enc);
    if (tell+3 > budget)
@@ -307,8 +307,8 @@ void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
    {
       ec_enc enc_intra_state;
       int tell_intra;
-      ec_uint32 nstart_bytes;
-      ec_uint32 nintra_bytes;
+      celt_uint32 nstart_bytes;
+      celt_uint32 nintra_bytes;
       int badness2;
       VARDECL(unsigned char, intra_bits);
 
@@ -329,7 +329,7 @@ void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
       badness2 = quant_coarse_energy_impl(m, start, end, eBands, oldEBands, budget,
             tell, e_prob_model[LM][intra], error, enc, C, LM, 0, max_decay);
 
-      if (two_pass && (badness1 < badness2 || (badness1 == badness2 && ec_tell_frac(enc) > tell_intra)))
+      if (two_pass && (badness1 < badness2 || (badness1 == badness2 && ec_tell_frac(enc)+intra_bias > tell_intra)))
       {
          *enc = enc_intra_state;
          /* Copy intra bits to bit-stream */
@@ -337,11 +337,19 @@ void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
                intra_bits, nintra_bytes - nstart_bytes);
          CELT_COPY(oldEBands, oldEBands_intra, C*m->nbEBands);
          CELT_COPY(error, error_intra, C*m->nbEBands);
+         intra = 1;
       }
    } else {
       CELT_COPY(oldEBands, oldEBands_intra, C*m->nbEBands);
       CELT_COPY(error, error_intra, C*m->nbEBands);
    }
+
+   if (intra)
+      *delayedIntra = new_distortion;
+   else
+      *delayedIntra = ADD32(MULT16_32_Q15(MULT16_16_Q15(pred_coef[LM], pred_coef[LM]),*delayedIntra),
+            new_distortion);
+
    RESTORE_STACK;
 }
 
@@ -421,8 +429,8 @@ void unquant_coarse_energy(const CELTMode *m, int start, int end, celt_word16 *o
    celt_word16 coef;
    celt_word16 beta;
    const int C = CHANNELS(_C);
-   ec_int32 budget;
-   ec_int32 tell;
+   celt_int32 budget;
+   celt_int32 tell;
 
 
    if (intra)
diff --git a/external/celt-0.11.1/quant_bands.h b/external/celt-e18de77/quant_bands.h
similarity index 93%
rename from external/celt-0.11.1/quant_bands.h
rename to external/celt-e18de77/quant_bands.h
index cc478a3..c1749b2 100644
--- a/external/celt-0.11.1/quant_bands.h
+++ b/external/celt-e18de77/quant_bands.h
@@ -45,9 +45,10 @@ unsigned char *quant_prob_alloc(const CELTMode *m);
 void quant_prob_free(const celt_int16 *freq);
 
 void quant_coarse_energy(const CELTMode *m, int start, int end, int effEnd,
-      const celt_word16 *eBands, celt_word16 *oldEBands, ec_uint32 budget,
+      const celt_word16 *eBands, celt_word16 *oldEBands, celt_uint32 budget,
       celt_word16 *error, ec_enc *enc, int _C, int LM,
-      int nbAvailableBytes, int force_intra, int *delayedIntra, int two_pass);
+      int nbAvailableBytes, int force_intra, celt_word32 *delayedIntra,
+      int two_pass, int loss_rate);
 
 void quant_fine_energy(const CELTMode *m, int start, int end, celt_word16 *oldEBands, celt_word16 *error, int *fine_quant, ec_enc *enc, int _C);
 
diff --git a/external/celt-0.11.1/rate.c b/external/celt-e18de77/rate.c
similarity index 95%
rename from external/celt-0.11.1/rate.c
rename to external/celt-e18de77/rate.c
index ed7e872..24037c0 100644
--- a/external/celt-0.11.1/rate.c
+++ b/external/celt-e18de77/rate.c
@@ -523,7 +523,7 @@ static inline int interp_bits2pulses(const CELTMode *m, int start, int end, int
 }
 
 int compute_allocation(const CELTMode *m, int start, int end, const int *offsets, const int *cap, int alloc_trim, int *intensity, int *dual_stereo,
-      int total, celt_int32 *balance, int *pulses, int *ebits, int *fine_priority, int _C, int LM, ec_ctx *ec, int encode, int prev)
+      celt_int32 total, celt_int32 *balance, int *pulses, int *ebits, int *fine_priority, int _C, int LM, ec_ctx *ec, int encode, int prev)
 {
    int lo, hi, len, j;
    const int C = CHANNELS(_C);
@@ -584,18 +584,19 @@ int compute_allocation(const CELTMode *m, int start, int end, const int *offsets
       int mid = (lo+hi) >> 1;
       for (j=end;j-->start;)
       {
+         int bitsj;
          int N = m->eBands[j+1]-m->eBands[j];
-         bits1[j] = C*N*m->allocVectors[mid*len+j]<<LM>>2;
-         if (bits1[j] > 0)
-            bits1[j] = IMAX(0, bits1[j] + trim_offset[j]);
-         bits1[j] += offsets[j];
-         if (bits1[j] >= thresh[j] || done)
+         bitsj = C*N*m->allocVectors[mid*len+j]<<LM>>2;
+         if (bitsj > 0)
+            bitsj = IMAX(0, bitsj + trim_offset[j]);
+         bitsj += offsets[j];
+         if (bitsj >= thresh[j] || done)
          {
             done = 1;
             /* Don't allocate more than we can actually use */
-            psum += IMIN(bits1[j], cap[j]);
+            psum += IMIN(bitsj, cap[j]);
          } else {
-            if (bits1[j] >= C<<BITRES)
+            if (bitsj >= C<<BITRES)
                psum += C<<BITRES;
          }
       }
@@ -610,20 +611,23 @@ int compute_allocation(const CELTMode *m, int start, int end, const int *offsets
    /*printf ("interp between %d and %d\n", lo, hi);*/
    for (j=start;j<end;j++)
    {
+      int bits1j, bits2j;
       int N = m->eBands[j+1]-m->eBands[j];
-      bits1[j] = C*N*m->allocVectors[lo*len+j]<<LM>>2;
-      bits2[j] = hi>=m->nbAllocVectors ?
+      bits1j = C*N*m->allocVectors[lo*len+j]<<LM>>2;
+      bits2j = hi>=m->nbAllocVectors ?
             cap[j] : C*N*m->allocVectors[hi*len+j]<<LM>>2;
-      if (bits1[j] > 0)
-         bits1[j] = IMAX(0, bits1[j] + trim_offset[j]);
-      if (bits2[j] > 0)
-         bits2[j] = IMAX(0, bits2[j] + trim_offset[j]);
+      if (bits1j > 0)
+         bits1j = IMAX(0, bits1j + trim_offset[j]);
+      if (bits2j > 0)
+         bits2j = IMAX(0, bits2j + trim_offset[j]);
       if (lo > 0)
-         bits1[j] += offsets[j];
-      bits2[j] += offsets[j];
+         bits1j += offsets[j];
+      bits2j += offsets[j];
       if (offsets[j]>0)
          skip_start = j;
-      bits2[j] = IMAX(0,bits2[j]-bits1[j]);
+      bits2j = IMAX(0,bits2j-bits1j);
+      bits1[j] = bits1j;
+      bits2[j] = bits2j;
    }
    codedBands = interp_bits2pulses(m, start, end, skip_start, bits1, bits2, thresh, cap,
          total, balance, skip_rsv, intensity, intensity_rsv, dual_stereo, dual_stereo_rsv,
diff --git a/external/celt-0.11.1/rate.h b/external/celt-e18de77/rate.h
similarity index 100%
rename from external/celt-0.11.1/rate.h
rename to external/celt-e18de77/rate.h
diff --git a/external/celt-0.11.1/stack_alloc.h b/external/celt-e18de77/stack_alloc.h
similarity index 89%
rename from external/celt-0.11.1/stack_alloc.h
rename to external/celt-e18de77/stack_alloc.h
index 3b9cf6c..69daf06 100644
--- a/external/celt-0.11.1/stack_alloc.h
+++ b/external/celt-e18de77/stack_alloc.h
@@ -125,14 +125,14 @@ extern char *global_stack_top;
 #define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
 #define PUSH(stack, size, type) (VALGRIND_MAKE_MEM_NOACCESS(stack, global_stack_top-stack),ALIGN((stack),sizeof(type)/sizeof(char)),VALGRIND_MAKE_MEM_UNDEFINED(stack, ((size)*sizeof(type)/sizeof(char))),(stack)+=(2*(size)*sizeof(type)/sizeof(char)),(type*)((stack)-(2*(size)*sizeof(type)/sizeof(char))))
 #define RESTORE_STACK ((global_stack = _saved_stack),VALGRIND_MAKE_MEM_NOACCESS(global_stack, global_stack_top-global_stack))
-#define ALLOC_STACK ((global_stack = (global_stack==0) ? ((global_stack_top=celt_alloc_scratch(GLOBAL_STACK_SIZE*2)+(GLOBAL_STACK_SIZE*2))-(GLOBAL_STACK_SIZE*2)) : global_stack),VALGRIND_MAKE_MEM_NOACCESS(global_stack, global_stack_top-global_stack))
+#define ALLOC_STACK char *_saved_stack; ((global_stack = (global_stack==0) ? ((global_stack_top=celt_alloc_scratch(GLOBAL_STACK_SIZE*2)+(GLOBAL_STACK_SIZE*2))-(GLOBAL_STACK_SIZE*2)) : global_stack),VALGRIND_MAKE_MEM_NOACCESS(global_stack, global_stack_top-global_stack)); _saved_stack = global_stack;
 
 #else 
 
 #define ALIGN(stack, size) ((stack) += ((size) - (long)(stack)) & ((size) - 1))
 #define PUSH(stack, size, type) (ALIGN((stack),sizeof(type)/sizeof(char)),(stack)+=(size)*(sizeof(type)/sizeof(char)),(type*)((stack)-(size)*(sizeof(type)/sizeof(char))))
 #define RESTORE_STACK (global_stack = _saved_stack)
-#define ALLOC_STACK (global_stack = (global_stack==0) ? celt_alloc_scratch(GLOBAL_STACK_SIZE) : global_stack)
+#define ALLOC_STACK char *_saved_stack; (global_stack = (global_stack==0) ? celt_alloc_scratch(GLOBAL_STACK_SIZE) : global_stack); _saved_stack = global_stack;
 
 #endif /*ENABLE_VALGRIND*/ 
 
diff --git a/external/celt-0.11.1/static_modes_fixed.c b/external/celt-e18de77/static_modes_fixed.c
similarity index 100%
rename from external/celt-0.11.1/static_modes_fixed.c
rename to external/celt-e18de77/static_modes_fixed.c
diff --git a/external/celt-0.11.1/static_modes_float.c b/external/celt-e18de77/static_modes_float.c
similarity index 100%
rename from external/celt-0.11.1/static_modes_float.c
rename to external/celt-e18de77/static_modes_float.c
diff --git a/external/celt-0.11.1/vq.c b/external/celt-e18de77/vq.c
similarity index 100%
rename from external/celt-0.11.1/vq.c
rename to external/celt-e18de77/vq.c
diff --git a/external/celt-0.11.1/vq.h b/external/celt-e18de77/vq.h
similarity index 100%
rename from external/celt-0.11.1/vq.h
rename to external/celt-e18de77/vq.h
diff --git a/premake/celt.lua b/premake/celt.lua
index 941b65c..4d56a4a 100644
--- a/premake/celt.lua
+++ b/premake/celt.lua
@@ -1,5 +1,5 @@
 
-local base_dir = (solution().basedir .. "/external/celt-0.11.1/")
+local base_dir = (solution().basedir .. "/external/celt-e18de77/")
 
 group "external"
     project "celt"
@@ -9,9 +9,10 @@ group "external"
 
         defines
         {
-            "restrict=",
             "CUSTOM_MODES",
-            "CUSTOM_MODES_ONLY"
+            "CUSTOM_MODES_ONLY",
+            "DISABLE_FLOAT_API",
+            "HAVE_CONFIG_H"
         }
         includedirs
         {