first commit

third_party/opus/tests/meson.build

@@ -0,0 +1,39 @@
+# Tests that link to libopus
+opus_tests = [
+  ['test_opus_api'],
+  ['test_opus_decode', [], 120],
+  ['test_opus_encode', 'opus_encode_regressions.c', 240],
+  ['test_opus_extensions', [], 120],
+  ['test_opus_padding'],
+  ['test_opus_projection'],
+]
+
+if opt_dred.enabled()
+  opus_tests += [['test_opus_dred', [], 60 * 20]]
+endif
+
+foreach t : opus_tests
+  test_name = t.get(0)
+  extra_srcs = t.get(1, [])
+
+  test_kwargs = {}
+  if t.length() > 2
+    test_kwargs += {'timeout': t[2]}
+  endif
+
+  exe_kwargs = {}
+  # This test uses private symbols
+  if test_name == 'test_opus_projection' or test_name == 'test_opus_extensions'
+    exe_kwargs = {
+      'link_with': [celt_lib, silk_lib, dnn_lib],
+      'objects': opus_lib.extract_all_objects(),
+    }
+  endif
+
+  exe = executable(test_name, '@0@.c'.format(test_name), extra_srcs,
+    include_directories: opus_includes,
+    dependencies: [libm, opus_dep],
+    install: false,
+    kwargs: exe_kwargs)
+  test(test_name, exe, kwargs: test_kwargs)
+endforeach

third_party/opus/tests/run_vectors.sh

@@ -0,0 +1,143 @@
+#!/bin/sh
+
+# Copyright (c) 2011-2012 Jean-Marc Valin
+#
+#  This file is extracted from RFC6716. Please see that RFC for additional
+#  information.
+#
+#  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.
+#
+#  - Neither the name of Internet Society, IETF or IETF Trust, nor the
+#  names of specific contributors, may be used to endorse or promote
+#  products derived from this software without specific prior written
+#  permission.
+#
+#  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 COPYRIGHT OWNER
+#  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.
+
+rm -f logs_mono.txt logs_mono2.txt
+rm -f logs_stereo.txt logs_stereo2.txt
+
+if [ "$#" -ne "3" ]; then
+    echo "usage: run_vectors.sh <exec path> <vector path> <rate>"
+    exit 1
+fi
+
+CMD_PATH=$1
+VECTOR_PATH=$2
+RATE=$3
+
+: ${OPUS_DEMO:=$CMD_PATH/opus_demo}
+: ${OPUS_COMPARE:=$CMD_PATH/opus_compare}
+
+if [ -d "$VECTOR_PATH" ]; then
+    echo "Test vectors found in $VECTOR_PATH"
+else
+    echo "No test vectors found"
+    #Don't make the test fail here because the test vectors
+    #will be distributed separately
+    exit 0
+fi
+
+if [ ! -x "$OPUS_COMPARE" ]; then
+    echo "ERROR: Compare program not found: $OPUS_COMPARE"
+    exit 1
+fi
+
+if [ -x "$OPUS_DEMO" ]; then
+    echo "Decoding with $OPUS_DEMO"
+else
+    echo "ERROR: Decoder not found: $OPUS_DEMO"
+    exit 1
+fi
+
+echo "=============="
+echo "Testing mono"
+echo "=============="
+echo
+
+for file in 01 02 03 04 05 06 07 08 09 10 11 12
+do
+    if [ -e "$VECTOR_PATH/testvector$file.bit" ]; then
+        echo "Testing testvector$file"
+    else
+        echo "Bitstream file not found: testvector$file.bit"
+    fi
+    if "$OPUS_DEMO" -d "$RATE" 1 "$VECTOR_PATH/testvector$file.bit" tmp.out >> logs_mono.txt 2>&1; then
+        echo "successfully decoded"
+    else
+        echo "ERROR: decoding failed"
+        exit 1
+    fi
+    "$OPUS_COMPARE" -r "$RATE" "$VECTOR_PATH/testvector${file}.dec" tmp.out >> logs_mono.txt 2>&1
+    float_ret=$?
+    "$OPUS_COMPARE" -r "$RATE" "$VECTOR_PATH/testvector${file}m.dec" tmp.out >> logs_mono2.txt 2>&1
+    float_ret2=$?
+    if [ "$float_ret" -eq "0" ] || [ "$float_ret2" -eq "0" ]; then
+        echo "output matches reference"
+    else
+        echo "ERROR: output does not match reference"
+        exit 1
+    fi
+    echo
+done
+
+echo "=============="
+echo Testing stereo
+echo "=============="
+echo
+
+for file in 01 02 03 04 05 06 07 08 09 10 11 12
+do
+    if [ -e "$VECTOR_PATH/testvector$file.bit" ]; then
+        echo "Testing testvector$file"
+    else
+        echo "Bitstream file not found: testvector$file"
+    fi
+    if "$OPUS_DEMO" -d "$RATE" 2 "$VECTOR_PATH/testvector$file.bit" tmp.out >> logs_stereo.txt 2>&1; then
+        echo "successfully decoded"
+    else
+        echo "ERROR: decoding failed"
+        exit 1
+    fi
+    "$OPUS_COMPARE" -s -r "$RATE" "$VECTOR_PATH/testvector${file}.dec" tmp.out >> logs_stereo.txt 2>&1
+    float_ret=$?
+    "$OPUS_COMPARE" -s -r "$RATE" "$VECTOR_PATH/testvector${file}m.dec" tmp.out >> logs_stereo2.txt 2>&1
+    float_ret2=$?
+    if [ "$float_ret" -eq "0" ] || [ "$float_ret2" -eq "0" ]; then
+        echo "output matches reference"
+    else
+        echo "ERROR: output does not match reference"
+        exit 1
+    fi
+    echo
+done
+
+
+
+echo "All tests have passed successfully"
+mono1=`grep quality logs_mono.txt | awk '{sum+=$4}END{if (NR == 12) sum /= 12; else sum = 0; print sum}'`
+mono2=`grep quality logs_mono2.txt | awk '{sum+=$4}END{if (NR == 12) sum /= 12; else sum = 0; print sum}'`
+echo $mono1 $mono2 | awk '{if ($2 > $1) $1 = $2; print "Average mono quality is", $1, "%"}'
+
+stereo1=`grep quality logs_stereo.txt | awk '{sum+=$4}END{if (NR == 12) sum /= 12; else sum = 0; print sum}'`
+stereo2=`grep quality logs_stereo2.txt | awk '{sum+=$4}END{if (NR == 12) sum /= 12; else sum = 0; print sum}'`
+echo $stereo1 $stereo2 | awk '{if ($2 > $1) $1 = $2; print "Average stereo quality is", $1, "%"}'

third_party/opus/tests/test_opus_common.h

@@ -0,0 +1,86 @@
+/* Copyright (c) 2011 Xiph.Org Foundation
+   Written by Gregory Maxwell */
+/*
+   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 COPYRIGHT OWNER
+   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.
+*/
+
+static OPUS_INLINE void deb2_impl(unsigned char *_t,unsigned char **_p,int _k,int _x,int _y)
+{
+  int i;
+  if(_x>2){
+     if(_y<3)for(i=0;i<_y;i++)*(--*_p)=_t[i+1];
+  }else{
+     _t[_x]=_t[_x-_y];
+     deb2_impl(_t,_p,_k,_x+1,_y);
+     for(i=_t[_x-_y]+1;i<_k;i++){
+       _t[_x]=i;
+       deb2_impl(_t,_p,_k,_x+1,_x);
+     }
+  }
+}
+
+/*Generates a De Bruijn sequence (k,2) with length k^2*/
+static OPUS_INLINE void debruijn2(int _k, unsigned char *_res)
+{
+   unsigned char *p;
+   unsigned char *t;
+   t=malloc(sizeof(unsigned char)*_k*2);
+   memset(t,0,sizeof(unsigned char)*_k*2);
+   p=&_res[_k*_k];
+   deb2_impl(t,&p,_k,1,1);
+   free(t);
+}
+
+/*MWC RNG of George Marsaglia*/
+static opus_uint32 Rz, Rw;
+static OPUS_INLINE opus_uint32 fast_rand(void)
+{
+  Rz=36969*(Rz&65535)+(Rz>>16);
+  Rw=18000*(Rw&65535)+(Rw>>16);
+  return (Rz<<16)+Rw;
+}
+static opus_uint32 iseed;
+
+#ifdef __GNUC__
+__attribute__((noreturn))
+#elif defined(_MSC_VER)
+__declspec(noreturn)
+#endif
+static OPUS_INLINE void _test_failed(const char *file, int line)
+{
+  fprintf(stderr,"\n ***************************************************\n");
+  fprintf(stderr," ***         A fatal error was detected.         ***\n");
+  fprintf(stderr," ***************************************************\n");
+  fprintf(stderr,"Please report this failure and include\n");
+  fprintf(stderr,"'make check SEED=%u fails %s at line %d for %s'\n",iseed,file,line,opus_get_version_string());
+  fprintf(stderr,"and any relevant details about your system.\n\n");
+#if defined(_MSC_VER)
+   _set_abort_behavior( 0, _WRITE_ABORT_MSG);
+#endif
+  abort();
+}
+#define test_failed() _test_failed(__FILE__, __LINE__);
+#define opus_test_assert(cond) {if (!(cond)) {test_failed();}}
+#define expect_true(cond, msg) {if (!(cond)) {fprintf(stderr, "FAIL - %s\n", msg); test_failed();}}
+void regression_test(void);

third_party/opus/tests/test_opus_decode.c

@@ -0,0 +1,481 @@
+/* Copyright (c) 2011-2013 Xiph.Org Foundation
+   Written by Gregory Maxwell */
+/*
+   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 COPYRIGHT OWNER
+   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.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <stdint.h>
+#include <math.h>
+#include <string.h>
+#include <time.h>
+#ifndef _WIN32
+#include <unistd.h>
+#else
+#include <process.h>
+#define getpid _getpid
+#endif
+#include "opus.h"
+#include "test_opus_common.h"
+
+#define MAX_PACKET (1500)
+#define MAX_FRAME_SAMP (5760)
+
+int test_decoder_code0(int no_fuzz)
+{
+   static const opus_int32 fsv[5]={48000,24000,16000,12000,8000};
+   int err,skip,plen;
+   int out_samples,fec;
+   int t;
+   opus_int32 i;
+   OpusDecoder *dec[5*2];
+   opus_int32 decsize;
+   OpusDecoder *decbak;
+   opus_uint32 dec_final_range1,dec_final_range2,dec_final_acc;
+   unsigned char *packet;
+   unsigned char modes[4096];
+   short *outbuf_int;
+   short *outbuf;
+
+   dec_final_range1=dec_final_range2=2;
+
+   packet=malloc(sizeof(unsigned char)*MAX_PACKET);
+   if(packet==NULL)test_failed();
+
+   outbuf_int=malloc(sizeof(short)*(MAX_FRAME_SAMP+16)*2);
+   for(i=0;i<(MAX_FRAME_SAMP+16)*2;i++)outbuf_int[i]=32749;
+   outbuf=&outbuf_int[8*2];
+
+   fprintf(stdout,"  Starting %d decoders...\n",5*2);
+   for(t=0;t<5*2;t++)
+   {
+      int fs=fsv[t>>1];
+      int c=(t&1)+1;
+      err=OPUS_INTERNAL_ERROR;
+      dec[t] = opus_decoder_create(fs, c, &err);
+      if(err!=OPUS_OK || dec[t]==NULL)test_failed();
+      fprintf(stdout,"    opus_decoder_create(%5d,%d) OK. Copy ",fs,c);
+      {
+         OpusDecoder *dec2;
+         /*The opus state structures contain no pointers and can be freely copied*/
+         dec2=(OpusDecoder *)malloc(opus_decoder_get_size(c));
+         if(dec2==NULL)test_failed();
+         memcpy(dec2,dec[t],opus_decoder_get_size(c));
+         memset(dec[t],255,opus_decoder_get_size(c));
+         opus_decoder_destroy(dec[t]);
+         printf("OK.\n");
+         dec[t]=dec2;
+      }
+   }
+
+   decsize=opus_decoder_get_size(1);
+   decbak=(OpusDecoder *)malloc(decsize);
+   if(decbak==NULL)test_failed();
+
+   for(t=0;t<5*2;t++)
+   {
+      int factor=48000/fsv[t>>1];
+      for(fec=0;fec<2;fec++)
+      {
+         opus_int32 dur;
+#if defined(ENABLE_OSCE) || defined(ENABLE_DEEP_PLC)
+         opus_decoder_ctl(dec[t], OPUS_SET_COMPLEXITY(fast_rand()%11));
+#endif
+         /*Test PLC on a fresh decoder*/
+         out_samples = opus_decode(dec[t], 0, 0, outbuf, 120/factor, fec);
+         if(out_samples!=120/factor)test_failed();
+         if(opus_decoder_ctl(dec[t], OPUS_GET_LAST_PACKET_DURATION(&dur))!=OPUS_OK)test_failed();
+         if(dur!=120/factor)test_failed();
+
+         /*Test on a size which isn't a multiple of 2.5ms*/
+         out_samples = opus_decode(dec[t], 0, 0, outbuf, 120/factor+2, fec);
+         if(out_samples!=OPUS_BAD_ARG)test_failed();
+
+         /*Test null pointer input*/
+         out_samples = opus_decode(dec[t], 0, -1, outbuf, 120/factor, fec);
+         if(out_samples!=120/factor)test_failed();
+         out_samples = opus_decode(dec[t], 0, 1, outbuf, 120/factor, fec);
+         if(out_samples!=120/factor)test_failed();
+         out_samples = opus_decode(dec[t], 0, 10, outbuf, 120/factor, fec);
+         if(out_samples!=120/factor)test_failed();
+         out_samples = opus_decode(dec[t], 0, fast_rand(), outbuf, 120/factor, fec);
+         if(out_samples!=120/factor)test_failed();
+         if(opus_decoder_ctl(dec[t], OPUS_GET_LAST_PACKET_DURATION(&dur))!=OPUS_OK)test_failed();
+         if(dur!=120/factor)test_failed();
+
+         /*Zero lengths*/
+         out_samples = opus_decode(dec[t], packet, 0, outbuf, 120/factor, fec);
+         if(out_samples!=120/factor)test_failed();
+
+         /*Zero buffer*/
+         outbuf[0]=32749;
+         out_samples = opus_decode(dec[t], packet, 0, outbuf, 0, fec);
+         if(out_samples>0)test_failed();
+#if !defined(OPUS_BUILD) && (OPUS_GNUC_PREREQ(4, 6) || (defined(__clang_major__) && __clang_major__ >= 3))
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wnonnull"
+#endif
+         out_samples = opus_decode(dec[t], packet, 0, 0, 0, fec);
+#if !defined(OPUS_BUILD) && (OPUS_GNUC_PREREQ(4, 6) || (defined(__clang_major__) && __clang_major__ >= 3))
+#pragma GCC diagnostic pop
+#endif
+         if(out_samples>0)test_failed();
+         if(outbuf[0]!=32749)test_failed();
+
+         /*Invalid lengths*/
+         out_samples = opus_decode(dec[t], packet, -1, outbuf, MAX_FRAME_SAMP, fec);
+         if(out_samples>=0)test_failed();
+         out_samples = opus_decode(dec[t], packet, INT_MIN, outbuf, MAX_FRAME_SAMP, fec);
+         if(out_samples>=0)test_failed();
+         out_samples = opus_decode(dec[t], packet, -1, outbuf, -1, fec);
+         if(out_samples>=0)test_failed();
+
+         /*Crazy FEC values*/
+         out_samples = opus_decode(dec[t], packet, 1, outbuf, MAX_FRAME_SAMP, fec?-1:2);
+         if(out_samples>=0)test_failed();
+
+         /*Reset the decoder*/
+         if(opus_decoder_ctl(dec[t], OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+      }
+   }
+   fprintf(stdout,"  dec[all] initial frame PLC OK.\n");
+
+   /*Count code 0 tests*/
+   for(i=0;i<64;i++)
+   {
+      opus_int32 dur;
+      int j,expected[5*2];
+      packet[0]=i<<2;
+      packet[1]=255;
+      packet[2]=255;
+      err=opus_packet_get_nb_channels(packet);
+      if(err!=(i&1)+1)test_failed();
+
+      for(t=0;t<5*2;t++){
+         expected[t]=opus_decoder_get_nb_samples(dec[t],packet,1);
+         if(expected[t]>2880)test_failed();
+      }
+
+      for(j=0;j<256;j++)
+      {
+         packet[1]=j;
+         for(t=0;t<5*2;t++)
+         {
+#if defined(ENABLE_OSCE) || defined(ENABLE_DEEP_PLC)
+            opus_decoder_ctl(dec[t], OPUS_SET_COMPLEXITY(fast_rand()%11));
+#endif
+            out_samples = opus_decode(dec[t], packet, 3, outbuf, MAX_FRAME_SAMP, 0);
+            if(out_samples!=expected[t])test_failed();
+            if(opus_decoder_ctl(dec[t], OPUS_GET_LAST_PACKET_DURATION(&dur))!=OPUS_OK)test_failed();
+            if(dur!=out_samples)test_failed();
+            opus_decoder_ctl(dec[t], OPUS_GET_FINAL_RANGE(&dec_final_range1));
+            if(t==0)dec_final_range2=dec_final_range1;
+            else if(dec_final_range1!=dec_final_range2)test_failed();
+         }
+      }
+
+      for(t=0;t<5*2;t++){
+         int factor=48000/fsv[t>>1];
+         /* The PLC is run for 6 frames in order to get better PLC coverage. */
+         for(j=0;j<6;j++)
+         {
+#if defined(ENABLE_OSCE) || defined(ENABLE_DEEP_PLC)
+            opus_decoder_ctl(dec[t], OPUS_SET_COMPLEXITY(fast_rand()%11));
+#endif
+            out_samples = opus_decode(dec[t], 0, 0, outbuf, expected[t], 0);
+            if(out_samples!=expected[t])test_failed();
+            if(opus_decoder_ctl(dec[t], OPUS_GET_LAST_PACKET_DURATION(&dur))!=OPUS_OK)test_failed();
+            if(dur!=out_samples)test_failed();
+         }
+         /* Run the PLC once at 2.5ms, as a simulation of someone trying to
+            do small drift corrections. */
+         if(expected[t]!=120/factor)
+         {
+            out_samples = opus_decode(dec[t], 0, 0, outbuf, 120/factor, 0);
+            if(out_samples!=120/factor)test_failed();
+            if(opus_decoder_ctl(dec[t], OPUS_GET_LAST_PACKET_DURATION(&dur))!=OPUS_OK)test_failed();
+            if(dur!=out_samples)test_failed();
+         }
+         out_samples = opus_decode(dec[t], packet, 2, outbuf, expected[t]-1, 0);
+         if(out_samples>0)test_failed();
+      }
+   }
+   fprintf(stdout,"  dec[all] all 2-byte prefix for length 3 and PLC, all modes (64) OK.\n");
+
+   if(no_fuzz)
+   {
+      fprintf(stdout,"  Skipping many tests which fuzz the decoder as requested.\n");
+      free(decbak);
+      for(t=0;t<5*2;t++)opus_decoder_destroy(dec[t]);
+      printf("  Decoders stopped.\n");
+
+      err=0;
+      for(i=0;i<8*2;i++)err|=outbuf_int[i]!=32749;
+      for(i=MAX_FRAME_SAMP*2;i<(MAX_FRAME_SAMP+8)*2;i++)err|=outbuf[i]!=32749;
+      if(err)test_failed();
+
+      free(outbuf_int);
+      free(packet);
+      return 0;
+   }
+
+   {
+     /*We only test a subset of the modes here simply because the longer
+       durations end up taking a long time.*/
+      static const int cmodes[4]={16,20,24,28};
+      static const opus_uint32 cres[4]={116290185,2172123586u,2172123586u,2172123586u};
+      static const opus_uint32 lres[3]={3285687739u,1481572662,694350475};
+      static const int lmodes[3]={0,4,8};
+      int mode=fast_rand()%4;
+
+      packet[0]=cmodes[mode]<<3;
+      dec_final_acc=0;
+      t=fast_rand()%10;
+
+      for(i=0;i<65536;i++)
+      {
+         int factor=48000/fsv[t>>1];
+         packet[1]=i>>8;
+         packet[2]=i&255;
+         packet[3]=255;
+         out_samples = opus_decode(dec[t], packet, 4, outbuf, MAX_FRAME_SAMP, 0);
+         if(out_samples!=120/factor)test_failed();
+         opus_decoder_ctl(dec[t], OPUS_GET_FINAL_RANGE(&dec_final_range1));
+         dec_final_acc+=dec_final_range1;
+      }
+      if(dec_final_acc!=cres[mode])test_failed();
+      fprintf(stdout,"  dec[%3d] all 3-byte prefix for length 4, mode %2d OK.\n",t,cmodes[mode]);
+
+      mode=fast_rand()%3;
+      packet[0]=lmodes[mode]<<3;
+      dec_final_acc=0;
+      t=fast_rand()%10;
+      for(i=0;i<65536;i++)
+      {
+         int factor=48000/fsv[t>>1];
+         packet[1]=i>>8;
+         packet[2]=i&255;
+         packet[3]=255;
+         out_samples = opus_decode(dec[t], packet, 4, outbuf, MAX_FRAME_SAMP, 0);
+         if(out_samples!=480/factor)test_failed();
+         opus_decoder_ctl(dec[t], OPUS_GET_FINAL_RANGE(&dec_final_range1));
+         dec_final_acc+=dec_final_range1;
+      }
+      if(dec_final_acc!=lres[mode])test_failed();
+      fprintf(stdout,"  dec[%3d] all 3-byte prefix for length 4, mode %2d OK.\n",t,lmodes[mode]);
+   }
+
+   skip=fast_rand()%7;
+   for(i=0;i<64;i++)
+   {
+      int j,expected[5*2];
+      packet[0]=i<<2;
+      for(t=0;t<5*2;t++)expected[t]=opus_decoder_get_nb_samples(dec[t],packet,1);
+      for(j=2+skip;j<1275;j+=4)
+      {
+         int jj;
+         for(jj=0;jj<j;jj++)packet[jj+1]=fast_rand()&255;
+         for(t=0;t<5*2;t++)
+         {
+#if defined(ENABLE_OSCE) || defined(ENABLE_DEEP_PLC)
+            opus_decoder_ctl(dec[t], OPUS_SET_COMPLEXITY(fast_rand()%11));
+#endif
+            out_samples = opus_decode(dec[t], packet, j+1, outbuf, MAX_FRAME_SAMP, 0);
+            if(out_samples!=expected[t])test_failed();
+            opus_decoder_ctl(dec[t], OPUS_GET_FINAL_RANGE(&dec_final_range1));
+            if(t==0)dec_final_range2=dec_final_range1;
+            else if(dec_final_range1!=dec_final_range2)test_failed();
+         }
+      }
+   }
+   fprintf(stdout,"  dec[all] random packets, all modes (64), every 8th size from from %d bytes to maximum OK.\n",2+skip);
+
+   debruijn2(64,modes);
+   plen=(fast_rand()%18+3)*8+skip+3;
+   for(i=0;i<4096;i++)
+   {
+      int j,expected[5*2];
+      packet[0]=modes[i]<<2;
+      for(t=0;t<5*2;t++)expected[t]=opus_decoder_get_nb_samples(dec[t],packet,plen);
+      for(j=0;j<plen;j++)packet[j+1]=(fast_rand()|fast_rand())&255;
+      memcpy(decbak,dec[0],decsize);
+      if(opus_decode(decbak, packet, plen+1, outbuf, expected[0], 1)!=expected[0])test_failed();
+      memcpy(decbak,dec[0],decsize);
+      if(opus_decode(decbak,  0, 0, outbuf, MAX_FRAME_SAMP, 1)<20)test_failed();
+      memcpy(decbak,dec[0],decsize);
+      if(opus_decode(decbak,  0, 0, outbuf, MAX_FRAME_SAMP, 0)<20)test_failed();
+      for(t=0;t<5*2;t++)
+      {
+         opus_int32 dur;
+#if defined(ENABLE_OSCE) || defined(ENABLE_DEEP_PLC)
+         opus_decoder_ctl(dec[t], OPUS_SET_COMPLEXITY(fast_rand()%11));
+#endif
+         out_samples = opus_decode(dec[t], packet, plen+1, outbuf, MAX_FRAME_SAMP, 0);
+         if(out_samples!=expected[t])test_failed();
+         if(t==0)dec_final_range2=dec_final_range1;
+         else if(dec_final_range1!=dec_final_range2)test_failed();
+         if(opus_decoder_ctl(dec[t], OPUS_GET_LAST_PACKET_DURATION(&dur))!=OPUS_OK)test_failed();
+         if(dur!=out_samples)test_failed();
+      }
+   }
+   fprintf(stdout,"  dec[all] random packets, all mode pairs (4096), %d bytes/frame OK.\n",plen+1);
+
+   plen=(fast_rand()%18+3)*8+skip+3;
+   t=rand()&3;
+   for(i=0;i<4096;i++)
+   {
+      int count,j,expected;
+      packet[0]=modes[i]<<2;
+      expected=opus_decoder_get_nb_samples(dec[t],packet,plen);
+      for(count=0;count<10;count++)
+      {
+#if defined(ENABLE_OSCE) || defined(ENABLE_DEEP_PLC)
+         opus_decoder_ctl(dec[t], OPUS_SET_COMPLEXITY(fast_rand()%11));
+#endif
+         for(j=0;j<plen;j++)packet[j+1]=(fast_rand()|fast_rand())&255;
+         out_samples = opus_decode(dec[t], packet, plen+1, outbuf, MAX_FRAME_SAMP, 0);
+         if(out_samples!=expected)test_failed();
+      }
+   }
+   fprintf(stdout,"  dec[%3d] random packets, all mode pairs (4096)*10, %d bytes/frame OK.\n",t,plen+1);
+
+   {
+      int tmodes[1]={25<<2};
+      opus_uint32 tseeds[1]={140441};
+      int tlen[1]={157};
+      opus_int32 tret[1]={480};
+      t=fast_rand()&1;
+      for(i=0;i<1;i++)
+      {
+         int j;
+         packet[0]=tmodes[i];
+         Rw=Rz=tseeds[i];
+         for(j=1;j<tlen[i];j++)packet[j]=fast_rand()&255;
+         out_samples=opus_decode(dec[t], packet, tlen[i], outbuf, MAX_FRAME_SAMP, 0);
+         if(out_samples!=tret[i])test_failed();
+      }
+      fprintf(stdout,"  dec[%3d] pre-selected random packets OK.\n",t);
+   }
+
+   free(decbak);
+   for(t=0;t<5*2;t++)opus_decoder_destroy(dec[t]);
+   printf("  Decoders stopped.\n");
+
+   err=0;
+   for(i=0;i<8*2;i++)err|=outbuf_int[i]!=32749;
+   for(i=MAX_FRAME_SAMP*2;i<(MAX_FRAME_SAMP+8)*2;i++)err|=outbuf[i]!=32749;
+   if(err)test_failed();
+
+   free(outbuf_int);
+   free(packet);
+   return 0;
+}
+
+#ifndef DISABLE_FLOAT_API
+void test_soft_clip(void)
+{
+   int i,j;
+   float x[1024];
+   float s[8] = {0, 0, 0, 0, 0, 0, 0, 0};
+   fprintf(stdout,"  Testing opus_pcm_soft_clip... ");
+   for(i=0;i<1024;i++)
+   {
+      for (j=0;j<1024;j++)
+      {
+        x[j]=(j&255)*(1/32.f)-4.f;
+      }
+      opus_pcm_soft_clip(&x[i],1024-i,1,s);
+      for (j=i;j<1024;j++)
+      {
+        if(x[j]>1.f)test_failed();
+        if(x[j]<-1.f)test_failed();
+      }
+   }
+   for(i=1;i<9;i++)
+   {
+      for (j=0;j<1024;j++)
+      {
+        x[j]=(j&255)*(1/32.f)-4.f;
+      }
+      opus_pcm_soft_clip(x,1024/i,i,s);
+      for (j=0;j<(1024/i)*i;j++)
+      {
+        if(x[j]>1.f)test_failed();
+        if(x[j]<-1.f)test_failed();
+      }
+   }
+   opus_pcm_soft_clip(x,0,1,s);
+   opus_pcm_soft_clip(x,1,0,s);
+   opus_pcm_soft_clip(x,1,1,0);
+   opus_pcm_soft_clip(x,1,-1,s);
+   opus_pcm_soft_clip(x,-1,1,s);
+   opus_pcm_soft_clip(0,1,1,s);
+   printf("OK.\n");
+}
+#endif
+
+int main(int _argc, char **_argv)
+{
+   const char * oversion;
+   const char * env_seed;
+   int env_used;
+
+   if(_argc>2)
+   {
+      fprintf(stderr,"Usage: %s [<seed>]\n",_argv[0]);
+      return 1;
+   }
+
+   env_used=0;
+   env_seed=getenv("SEED");
+   if(_argc>1)iseed=atoi(_argv[1]);
+   else if(env_seed)
+   {
+      iseed=atoi(env_seed);
+      env_used=1;
+   }
+   else iseed=(opus_uint32)time(NULL)^(((opus_uint32)getpid()&65535)<<16);
+   Rw=Rz=iseed;
+
+   oversion=opus_get_version_string();
+   if(!oversion)test_failed();
+   fprintf(stderr,"Testing %s decoder. Random seed: %u (%.4X)\n", oversion, iseed, fast_rand() % 65535);
+   if(env_used)fprintf(stderr,"  Random seed set from the environment (SEED=%s).\n", env_seed);
+
+   /*Setting TEST_OPUS_NOFUZZ tells the tool not to send garbage data
+     into the decoders. This is helpful because garbage data
+     may cause the decoders to clip, which angers CLANG IOC.*/
+   test_decoder_code0(getenv("TEST_OPUS_NOFUZZ")!=NULL);
+#ifndef DISABLE_FLOAT_API
+   test_soft_clip();
+#endif
+
+   return 0;
+}

third_party/opus/tests/test_opus_dred.c

@@ -0,0 +1,107 @@
+/* Copyright (c) 2023 Amazon
+   Written by Michael Klingbeil */
+/*
+   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 COPYRIGHT OWNER
+   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.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#ifndef _WIN32
+#include <unistd.h>
+#else
+#include <process.h>
+#define getpid _getpid
+#endif
+
+/* including sources directly to test internal APIs */
+#define CELT_C /* to make celt_assert work */
+#include "opus.h"
+#include "test_opus_common.h"
+
+
+
+#define NB_RANDOM_EXTENSIONS 10000000
+#define MAX_EXTENSION_SIZE 200
+#define MAX_NB_EXTENSIONS 100
+
+void test_random_dred(void)
+{
+   int error;
+   int i;
+   OpusDREDDecoder *dred_dec;
+   OpusDRED *dred;
+   dred_dec = opus_dred_decoder_create(&error);
+   expect_true(error == OPUS_OK, "opus_dred_decoder_create() failed");
+   dred = opus_dred_alloc(&error);
+   expect_true(error == OPUS_OK, "opus_dred_create() failed");
+   for (i=0;i<NB_RANDOM_EXTENSIONS;i++)
+   {
+      unsigned char payload[MAX_EXTENSION_SIZE];
+      int len;
+      int j;
+      int res1, res2;
+      int dred_end;
+      len = fast_rand()%(MAX_EXTENSION_SIZE+1);
+      for (j=0;j<len;j++)
+         payload[j] = fast_rand()&0xFF;
+      res1 = opus_dred_parse(dred_dec, dred, payload, len, 48000, 48000, &dred_end, fast_rand()&0x1);
+      if (res1 > 0)
+      {
+         res2 = opus_dred_process(dred_dec, dred, dred);
+         expect_true(res2 == OPUS_OK, "process should succeed if parse succeeds");
+         expect_true(res1 >= dred_end, "end before beginning");
+      }
+   }
+   opus_dred_free(dred);
+   opus_dred_decoder_destroy(dred_dec);
+}
+
+int main(int argc, char **argv)
+{
+   int env_used;
+   char *env_seed;
+   env_used=0;
+   env_seed=getenv("SEED");
+   if(argc>1)iseed=atoi(argv[1]);
+   else if(env_seed)
+   {
+      iseed=atoi(env_seed);
+      env_used=1;
+   }
+   else iseed=(opus_uint32)time(NULL)^(((opus_uint32)getpid()&65535)<<16);
+   Rw=Rz=iseed;
+
+   fprintf(stderr,"Testing dred. Random seed: %u (%.4X)\n", iseed, fast_rand() % 65535);
+   if(env_used)fprintf(stderr,"  Random seed set from the environment (SEED=%s).\n", env_seed);
+
+   test_random_dred();
+   fprintf(stderr,"Tests completed successfully.\n");
+   return 0;
+}

third_party/opus/tests/test_opus_encode.c

@@ -0,0 +1,738 @@
+/* Copyright (c) 2011-2013 Xiph.Org Foundation
+   Written by Gregory Maxwell */
+/*
+   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 COPYRIGHT OWNER
+   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.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <limits.h>
+#include <stdint.h>
+#include <math.h>
+#include <string.h>
+#include <time.h>
+#if (!defined WIN32 && !defined _WIN32) || defined(__MINGW32__)
+#include <unistd.h>
+#else
+#include <process.h>
+#define getpid _getpid
+#endif
+#include "opus_multistream.h"
+#include "opus.h"
+#include "../src/opus_private.h"
+#include "test_opus_common.h"
+
+#define MAX_PACKET (1500)
+#define SAMPLES (48000*30)
+#define SSAMPLES (SAMPLES/3)
+#define MAX_FRAME_SAMP (5760)
+#define PI (3.141592653589793238462643f)
+#define RAND_SAMPLE(a) (a[fast_rand() % sizeof(a)/sizeof(a[0])])
+
+void generate_music(short *buf, opus_int32 len)
+{
+   opus_int32 a1,b1,a2,b2;
+   opus_int32 c1,c2,d1,d2;
+   opus_int32 i,j;
+   a1=b1=a2=b2=0;
+   c1=c2=d1=d2=0;
+   j=0;
+   /*60ms silence*/
+   for(i=0;i<2880;i++)buf[i*2]=buf[i*2+1]=0;
+   for(i=2880;i<len;i++)
+   {
+     opus_uint32 r;
+     opus_int32 v1,v2;
+     v1=v2=(((j*((j>>12)^((j>>10|j>>12)&26&j>>7)))&128)+128)<<15;
+     r=fast_rand();v1+=r&65535;v1-=r>>16;
+     r=fast_rand();v2+=r&65535;v2-=r>>16;
+     b1=v1-a1+((b1*61+32)>>6);a1=v1;
+     b2=v2-a2+((b2*61+32)>>6);a2=v2;
+     c1=(30*(c1+b1+d1)+32)>>6;d1=b1;
+     c2=(30*(c2+b2+d2)+32)>>6;d2=b2;
+     v1=(c1+128)>>8;
+     v2=(c2+128)>>8;
+     buf[i*2]=v1>32767?32767:(v1<-32768?-32768:v1);
+     buf[i*2+1]=v2>32767?32767:(v2<-32768?-32768:v2);
+     if(i%6==0)j++;
+   }
+}
+
+#if 0
+static int save_ctr = 0;
+static void int_to_char(opus_uint32 i, unsigned char ch[4])
+{
+    ch[0] = i>>24;
+    ch[1] = (i>>16)&0xFF;
+    ch[2] = (i>>8)&0xFF;
+    ch[3] = i&0xFF;
+}
+
+static OPUS_INLINE void save_packet(unsigned char* p, int len, opus_uint32 rng)
+{
+   FILE *fout;
+   unsigned char int_field[4];
+   char name[256];
+   snprintf(name,255,"test_opus_encode.%llu.%d.bit",(unsigned long long)iseed,save_ctr);
+   fprintf(stdout,"writing %d byte packet to %s\n",len,name);
+   fout=fopen(name, "wb+");
+   if(fout==NULL)test_failed();
+   int_to_char(len, int_field);
+   fwrite(int_field, 1, 4, fout);
+   int_to_char(rng, int_field);
+   fwrite(int_field, 1, 4, fout);
+   fwrite(p, 1, len, fout);
+   fclose(fout);
+   save_ctr++;
+}
+#endif
+
+int get_frame_size_enum(int frame_size, int sampling_rate)
+{
+   int frame_size_enum;
+
+   if(frame_size==sampling_rate/400)
+      frame_size_enum = OPUS_FRAMESIZE_2_5_MS;
+   else if(frame_size==sampling_rate/200)
+      frame_size_enum = OPUS_FRAMESIZE_5_MS;
+   else if(frame_size==sampling_rate/100)
+      frame_size_enum = OPUS_FRAMESIZE_10_MS;
+   else if(frame_size==sampling_rate/50)
+      frame_size_enum = OPUS_FRAMESIZE_20_MS;
+   else if(frame_size==sampling_rate/25)
+      frame_size_enum = OPUS_FRAMESIZE_40_MS;
+   else if(frame_size==3*sampling_rate/50)
+      frame_size_enum = OPUS_FRAMESIZE_60_MS;
+   else if(frame_size==4*sampling_rate/50)
+      frame_size_enum = OPUS_FRAMESIZE_80_MS;
+   else if(frame_size==5*sampling_rate/50)
+      frame_size_enum = OPUS_FRAMESIZE_100_MS;
+   else if(frame_size==6*sampling_rate/50)
+      frame_size_enum = OPUS_FRAMESIZE_120_MS;
+   else
+      test_failed();
+
+   return frame_size_enum;
+}
+
+int test_encode(OpusEncoder *enc, int channels, int frame_size, OpusDecoder *dec)
+{
+   int samp_count = 0;
+   opus_int16 *inbuf;
+   unsigned char packet[MAX_PACKET+257];
+   int len;
+   opus_int16 *outbuf;
+   int out_samples;
+   int ret = 0;
+#ifdef ENABLE_DRED
+   OpusDREDDecoder *dred_dec;
+   OpusDRED *dred;
+   int dred_end;
+   int dred_amount;
+   int dred_ret;
+   dred_dec = opus_dred_decoder_create(&dred_ret);
+   dred = opus_dred_alloc(&dred_ret);
+#endif
+   /* Generate input data */
+   inbuf = (opus_int16*)malloc(sizeof(*inbuf)*SSAMPLES);
+   generate_music(inbuf, SSAMPLES/2);
+
+   /* Allocate memory for output data */
+   outbuf = (opus_int16*)malloc(sizeof(*outbuf)*MAX_FRAME_SAMP*3);
+
+   /* Encode data, then decode for sanity check */
+   do {
+      len = opus_encode(enc, &inbuf[samp_count*channels], frame_size, packet, MAX_PACKET);
+      if(len<0 || len>MAX_PACKET) {
+         fprintf(stderr,"opus_encode() returned %d\n",len);
+         ret = -1;
+         break;
+      }
+#ifdef ENABLE_DRED
+      dred_amount = opus_dred_parse(dred_dec, dred, packet, len, 48000, 48000, &dred_end, 0);
+      if(dred_amount<0) {
+         fprintf(stderr,"opus_dred_parse() returned %d\n",dred_amount);
+         ret = -1;
+         break;
+      }
+      if (dred_amount >= frame_size && (fast_rand()&1)) {
+         dred_ret = opus_decoder_dred_decode(dec, dred, frame_size, outbuf, frame_size);
+         if(dred_ret<0) {
+            fprintf(stderr,"opus_decoder_dred_decode() returned %d\n",dred_ret);
+            ret = -1;
+            break;
+         }
+      }
+#endif
+      out_samples = opus_decode(dec, packet, len, outbuf, MAX_FRAME_SAMP, 0);
+      if(out_samples!=frame_size) {
+         fprintf(stderr,"opus_decode() returned %d\n",out_samples);
+         ret = -1;
+         break;
+      }
+
+      samp_count += frame_size;
+   } while (samp_count < ((SSAMPLES/2)-MAX_FRAME_SAMP));
+#ifdef ENABLE_DRED
+   opus_dred_decoder_destroy(dred_dec);
+   opus_dred_free(dred);
+#endif
+   /* Clean up */
+   free(inbuf);
+   free(outbuf);
+   return ret;
+}
+
+void fuzz_encoder_settings(const int num_encoders, const int num_setting_changes)
+{
+   OpusEncoder *enc;
+   OpusDecoder *dec;
+   int i,j,err;
+
+   /* Parameters to fuzz. Some values are duplicated to increase their probability of being tested. */
+   int sampling_rates[5] = {8000, 12000, 16000, 24000, 48000};
+   int channels[2] = {1, 2};
+   int applications[3] = {OPUS_APPLICATION_AUDIO, OPUS_APPLICATION_VOIP, OPUS_APPLICATION_RESTRICTED_LOWDELAY};
+   int bitrates[11] = {6000, 12000, 16000, 24000, 32000, 48000, 64000, 96000, 510000, OPUS_AUTO, OPUS_BITRATE_MAX};
+   int force_channels[4] = {OPUS_AUTO, OPUS_AUTO, 1, 2};
+   int use_vbr[3] = {0, 1, 1};
+   int vbr_constraints[3] = {0, 1, 1};
+   int complexities[11] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+   int max_bandwidths[6] = {OPUS_BANDWIDTH_NARROWBAND, OPUS_BANDWIDTH_MEDIUMBAND,
+                            OPUS_BANDWIDTH_WIDEBAND, OPUS_BANDWIDTH_SUPERWIDEBAND,
+                            OPUS_BANDWIDTH_FULLBAND, OPUS_BANDWIDTH_FULLBAND};
+   int signals[4] = {OPUS_AUTO, OPUS_AUTO, OPUS_SIGNAL_VOICE, OPUS_SIGNAL_MUSIC};
+   int inband_fecs[3] = {0, 0, 1};
+   int packet_loss_perc[4] = {0, 1, 2, 5};
+   int lsb_depths[2] = {8, 24};
+   int prediction_disabled[3] = {0, 0, 1};
+   int use_dtx[2] = {0, 1};
+   int frame_sizes_ms_x2[9] = {5, 10, 20, 40, 80, 120, 160, 200, 240};  /* x2 to avoid 2.5 ms */
+
+   for (i=0; i<num_encoders; i++) {
+      int sampling_rate = RAND_SAMPLE(sampling_rates);
+      int num_channels = RAND_SAMPLE(channels);
+      int application = RAND_SAMPLE(applications);
+
+      dec = opus_decoder_create(sampling_rate, num_channels, &err);
+      if(err!=OPUS_OK || dec==NULL)test_failed();
+
+      enc = opus_encoder_create(sampling_rate, num_channels, application, &err);
+      if(err!=OPUS_OK || enc==NULL)test_failed();
+
+      for (j=0; j<num_setting_changes; j++) {
+         int bitrate = RAND_SAMPLE(bitrates);
+         int force_channel = RAND_SAMPLE(force_channels);
+         int vbr = RAND_SAMPLE(use_vbr);
+         int vbr_constraint = RAND_SAMPLE(vbr_constraints);
+         int complexity = RAND_SAMPLE(complexities);
+         int max_bw = RAND_SAMPLE(max_bandwidths);
+         int sig = RAND_SAMPLE(signals);
+         int inband_fec = RAND_SAMPLE(inband_fecs);
+         int pkt_loss = RAND_SAMPLE(packet_loss_perc);
+         int lsb_depth = RAND_SAMPLE(lsb_depths);
+         int pred_disabled = RAND_SAMPLE(prediction_disabled);
+         int dtx = RAND_SAMPLE(use_dtx);
+         int frame_size_ms_x2 = RAND_SAMPLE(frame_sizes_ms_x2);
+         int frame_size = frame_size_ms_x2*sampling_rate/2000;
+         int frame_size_enum = get_frame_size_enum(frame_size, sampling_rate);
+         force_channel = IMIN(force_channel, num_channels);
+
+         if(opus_encoder_ctl(enc, OPUS_SET_BITRATE(bitrate)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_FORCE_CHANNELS(force_channel)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_VBR(vbr)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_VBR_CONSTRAINT(vbr_constraint)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_COMPLEXITY(complexity)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_MAX_BANDWIDTH(max_bw)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_SIGNAL(sig)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_INBAND_FEC(inband_fec)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_PACKET_LOSS_PERC(pkt_loss)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_LSB_DEPTH(lsb_depth)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_PREDICTION_DISABLED(pred_disabled)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_DTX(dtx)) != OPUS_OK) test_failed();
+         if(opus_encoder_ctl(enc, OPUS_SET_EXPERT_FRAME_DURATION(frame_size_enum)) != OPUS_OK) test_failed();
+#ifdef ENABLE_DRED
+         if(opus_encoder_ctl(enc, OPUS_SET_DRED_DURATION(fast_rand()%101)) != OPUS_OK) test_failed();
+#endif
+         if(test_encode(enc, num_channels, frame_size, dec)) {
+            fprintf(stderr,
+               "fuzz_encoder_settings: %d kHz, %d ch, application: %d, "
+               "%d bps, force ch: %d, vbr: %d, vbr constraint: %d, complexity: %d, "
+               "max bw: %d, signal: %d, inband fec: %d, pkt loss: %d%%, lsb depth: %d, "
+               "pred disabled: %d, dtx: %d, (%d/2) ms\n",
+               sampling_rate/1000, num_channels, application, bitrate,
+               force_channel, vbr, vbr_constraint, complexity, max_bw, sig, inband_fec,
+               pkt_loss, lsb_depth, pred_disabled, dtx, frame_size_ms_x2);
+            test_failed();
+         }
+      }
+
+      opus_encoder_destroy(enc);
+      opus_decoder_destroy(dec);
+   }
+}
+
+int run_test1(int no_fuzz)
+{
+   static const int fsizes[6]={960*3,960*2,120,240,480,960};
+   static const char *mstrings[3] = {"    LP","Hybrid","  MDCT"};
+   unsigned char mapping[256] = {0,1,255};
+   unsigned char db62[36];
+   opus_int32 i,j;
+   int rc,err;
+   OpusEncoder *enc;
+   OpusMSEncoder *MSenc;
+   OpusDecoder *dec;
+   OpusMSDecoder *MSdec;
+   OpusMSDecoder *MSdec_err;
+   OpusDecoder *dec_err[10];
+   short *inbuf;
+   short *outbuf;
+   short *out2buf;
+   opus_int32 bitrate_bps;
+   unsigned char packet[MAX_PACKET+257];
+   opus_uint32 enc_final_range;
+   opus_uint32 dec_final_range;
+   int fswitch;
+   int fsize;
+   int count;
+
+  /*FIXME: encoder api tests, fs!=48k, mono, VBR*/
+
+   fprintf(stdout,"  Encode+Decode tests.\n");
+   fflush(stdout);
+
+   enc = opus_encoder_create(48000, 2, OPUS_APPLICATION_VOIP, &err);
+   if(err != OPUS_OK || enc==NULL)test_failed();
+
+   for(i=0;i<2;i++)
+   {
+      int *ret_err;
+      ret_err = i?0:&err;
+      MSenc = opus_multistream_encoder_create(8000, 2, 2, 0, mapping, OPUS_UNIMPLEMENTED, ret_err);
+      if((ret_err && *ret_err != OPUS_BAD_ARG) || MSenc!=NULL)test_failed();
+
+      MSenc = opus_multistream_encoder_create(8000, 0, 1, 0, mapping, OPUS_APPLICATION_VOIP, ret_err);
+      if((ret_err && *ret_err != OPUS_BAD_ARG) || MSenc!=NULL)test_failed();
+
+      MSenc = opus_multistream_encoder_create(44100, 2, 2, 0, mapping, OPUS_APPLICATION_VOIP, ret_err);
+      if((ret_err && *ret_err != OPUS_BAD_ARG) || MSenc!=NULL)test_failed();
+
+      MSenc = opus_multistream_encoder_create(8000, 2, 2, 3, mapping, OPUS_APPLICATION_VOIP, ret_err);
+      if((ret_err && *ret_err != OPUS_BAD_ARG) || MSenc!=NULL)test_failed();
+
+      MSenc = opus_multistream_encoder_create(8000, 2, -1, 0, mapping, OPUS_APPLICATION_VOIP, ret_err);
+      if((ret_err && *ret_err != OPUS_BAD_ARG) || MSenc!=NULL)test_failed();
+
+      MSenc = opus_multistream_encoder_create(8000, 256, 2, 0, mapping, OPUS_APPLICATION_VOIP, ret_err);
+      if((ret_err && *ret_err != OPUS_BAD_ARG) || MSenc!=NULL)test_failed();
+   }
+
+   MSenc = opus_multistream_encoder_create(8000, 2, 2, 0, mapping, OPUS_APPLICATION_AUDIO, &err);
+   if(err != OPUS_OK || MSenc==NULL)test_failed();
+
+   /*Some multistream encoder API tests*/
+   if(opus_multistream_encoder_ctl(MSenc, OPUS_GET_BITRATE(&i))!=OPUS_OK)test_failed();
+   if(opus_multistream_encoder_ctl(MSenc, OPUS_GET_LSB_DEPTH(&i))!=OPUS_OK)test_failed();
+   if(i<16)test_failed();
+
+   {
+      OpusEncoder *tmp_enc;
+      if(opus_multistream_encoder_ctl(MSenc,  OPUS_MULTISTREAM_GET_ENCODER_STATE(1,&tmp_enc))!=OPUS_OK)test_failed();
+      if(opus_encoder_ctl(tmp_enc, OPUS_GET_LSB_DEPTH(&j))!=OPUS_OK)test_failed();
+      if(i!=j)test_failed();
+      if(opus_multistream_encoder_ctl(MSenc,  OPUS_MULTISTREAM_GET_ENCODER_STATE(2,&tmp_enc))!=OPUS_BAD_ARG)test_failed();
+   }
+
+   dec = opus_decoder_create(48000, 2, &err);
+   if(err != OPUS_OK || dec==NULL)test_failed();
+
+   MSdec = opus_multistream_decoder_create(48000, 2, 2, 0, mapping, &err);
+   if(err != OPUS_OK || MSdec==NULL)test_failed();
+
+   MSdec_err = opus_multistream_decoder_create(48000, 3, 2, 0, mapping, &err);
+   if(err != OPUS_OK || MSdec_err==NULL)test_failed();
+
+   dec_err[0]=(OpusDecoder *)malloc(opus_decoder_get_size(2));
+   memcpy(dec_err[0],dec,opus_decoder_get_size(2));
+   dec_err[1] = opus_decoder_create(48000, 1, &err);
+   dec_err[2] = opus_decoder_create(24000, 2, &err);
+   dec_err[3] = opus_decoder_create(24000, 1, &err);
+   dec_err[4] = opus_decoder_create(16000, 2, &err);
+   dec_err[5] = opus_decoder_create(16000, 1, &err);
+   dec_err[6] = opus_decoder_create(12000, 2, &err);
+   dec_err[7] = opus_decoder_create(12000, 1, &err);
+   dec_err[8] = opus_decoder_create(8000, 2, &err);
+   dec_err[9] = opus_decoder_create(8000, 1, &err);
+   for(i=0;i<10;i++)if(dec_err[i]==NULL)test_failed();
+
+   {
+      OpusEncoder *enccpy;
+      /*The opus state structures contain no pointers and can be freely copied*/
+      enccpy=(OpusEncoder *)malloc(opus_encoder_get_size(2));
+      memcpy(enccpy,enc,opus_encoder_get_size(2));
+      memset(enc,255,opus_encoder_get_size(2));
+      opus_encoder_destroy(enc);
+      enc=enccpy;
+   }
+
+   inbuf=(short *)malloc(sizeof(short)*SAMPLES*2);
+   outbuf=(short *)malloc(sizeof(short)*SAMPLES*2);
+   out2buf=(short *)malloc(sizeof(short)*MAX_FRAME_SAMP*3);
+   if(inbuf==NULL || outbuf==NULL || out2buf==NULL)test_failed();
+
+   generate_music(inbuf,SAMPLES);
+
+/*   FILE *foo;
+   foo = fopen("foo.sw", "wb+");
+   fwrite(inbuf, 1, SAMPLES*2*2, foo);
+   fclose(foo);*/
+
+   if(opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(OPUS_AUTO))!=OPUS_OK)test_failed();
+   if(opus_encoder_ctl(enc, OPUS_SET_FORCE_MODE(-2))!=OPUS_BAD_ARG)test_failed();
+   if(opus_encode(enc, inbuf, 500, packet, MAX_PACKET)!=OPUS_BAD_ARG)test_failed();
+
+   for(rc=0;rc<3;rc++)
+   {
+      if(opus_encoder_ctl(enc, OPUS_SET_VBR(rc<2))!=OPUS_OK)test_failed();
+      if(opus_encoder_ctl(enc, OPUS_SET_VBR_CONSTRAINT(rc==1))!=OPUS_OK)test_failed();
+      if(opus_encoder_ctl(enc, OPUS_SET_VBR_CONSTRAINT(rc==1))!=OPUS_OK)test_failed();
+      if(opus_encoder_ctl(enc, OPUS_SET_INBAND_FEC(rc==0))!=OPUS_OK)test_failed();
+#ifdef ENABLE_DRED
+      if(opus_encoder_ctl(enc, OPUS_SET_DRED_DURATION(fast_rand()%101)) != OPUS_OK) test_failed();
+#endif
+      for(j=0;j<13;j++)
+      {
+         int rate;
+         int modes[13]={0,0,0,1,1,1,1,2,2,2,2,2,2};
+         int rates[13]={6000,12000,48000,16000,32000,48000,64000,512000,13000,24000,48000,64000,96000};
+         int frame[13]={960*2,960,480,960,960,960,480,960*3,960*3,960,480,240,120};
+         rate=rates[j]+fast_rand()%rates[j];
+         count=i=0;
+         do {
+            int bw,len,out_samples,frame_size;
+            frame_size=frame[j];
+            if((fast_rand()&255)==0)
+            {
+               if(opus_encoder_ctl(enc, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+               if(opus_decoder_ctl(dec, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+               if((fast_rand()&1)!=0)
+               {
+                  if(opus_decoder_ctl(dec_err[fast_rand()&1], OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+               }
+            }
+            if((fast_rand()&127)==0)
+            {
+               if(opus_decoder_ctl(dec_err[fast_rand()&1], OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+            }
+            if(fast_rand()%10==0){
+               int complex=fast_rand()%11;
+               if(opus_encoder_ctl(enc, OPUS_SET_COMPLEXITY(complex))!=OPUS_OK)test_failed();
+            }
+            if(fast_rand()%50==0)opus_decoder_ctl(dec, OPUS_RESET_STATE);
+            if(opus_encoder_ctl(enc, OPUS_SET_INBAND_FEC(rc==0))!=OPUS_OK)test_failed();
+            if(opus_encoder_ctl(enc, OPUS_SET_FORCE_MODE(MODE_SILK_ONLY+modes[j]))!=OPUS_OK)test_failed();
+            if(opus_encoder_ctl(enc, OPUS_SET_DTX(fast_rand()&1))!=OPUS_OK)test_failed();
+            if(opus_encoder_ctl(enc, OPUS_SET_BITRATE(rate))!=OPUS_OK)test_failed();
+            if(opus_encoder_ctl(enc, OPUS_SET_FORCE_CHANNELS((rates[j]>=64000?2:1)))!=OPUS_OK)test_failed();
+            if(opus_encoder_ctl(enc, OPUS_SET_COMPLEXITY((count>>2)%11))!=OPUS_OK)test_failed();
+            if(opus_encoder_ctl(enc, OPUS_SET_PACKET_LOSS_PERC((fast_rand()&15)&(fast_rand()%15)))!=OPUS_OK)test_failed();
+            bw=modes[j]==0?OPUS_BANDWIDTH_NARROWBAND+(fast_rand()%3):
+               modes[j]==1?OPUS_BANDWIDTH_SUPERWIDEBAND+(fast_rand()&1):
+                           OPUS_BANDWIDTH_NARROWBAND+(fast_rand()%5);
+            if(modes[j]==2&&bw==OPUS_BANDWIDTH_MEDIUMBAND)bw+=3;
+            if(opus_encoder_ctl(enc, OPUS_SET_BANDWIDTH(bw))!=OPUS_OK)test_failed();
+            len = opus_encode(enc, &inbuf[i<<1], frame_size, packet, MAX_PACKET);
+            if(len<0 || len>MAX_PACKET)test_failed();
+            if(opus_encoder_ctl(enc, OPUS_GET_FINAL_RANGE(&enc_final_range))!=OPUS_OK)test_failed();
+            if((fast_rand()&3)==0)
+            {
+               if(opus_packet_pad(packet,len,len+1)!=OPUS_OK)test_failed();
+               len++;
+            }
+            if((fast_rand()&7)==0)
+            {
+               if(opus_packet_pad(packet,len,len+256)!=OPUS_OK)test_failed();
+               len+=256;
+            }
+            if((fast_rand()&3)==0)
+            {
+               len=opus_packet_unpad(packet,len);
+               if(len<1)test_failed();
+            }
+            out_samples = opus_decode(dec, packet, len, &outbuf[i<<1], MAX_FRAME_SAMP, 0);
+            if(out_samples!=frame_size)test_failed();
+            if(opus_decoder_ctl(dec, OPUS_GET_FINAL_RANGE(&dec_final_range))!=OPUS_OK)test_failed();
+            if(enc_final_range!=dec_final_range)test_failed();
+            /*LBRR decode*/
+            out_samples = opus_decode(dec_err[0], packet, len, out2buf, frame_size, (fast_rand()&3)!=0);
+            if(out_samples!=frame_size)test_failed();
+            out_samples = opus_decode(dec_err[1], packet, (fast_rand()&3)==0?0:len, out2buf, MAX_FRAME_SAMP, (fast_rand()&7)!=0);
+            if(out_samples<120)test_failed();
+            i+=frame_size;
+            count++;
+         }while(i<(SSAMPLES-MAX_FRAME_SAMP));
+         fprintf(stdout,"    Mode %s FB encode %s, %6d bps OK.\n",mstrings[modes[j]],rc==0?" VBR":rc==1?"CVBR":" CBR",rate);
+         fflush(stdout);
+      }
+   }
+
+   if(opus_encoder_ctl(enc, OPUS_SET_FORCE_MODE(OPUS_AUTO))!=OPUS_OK)test_failed();
+   if(opus_encoder_ctl(enc, OPUS_SET_FORCE_CHANNELS(OPUS_AUTO))!=OPUS_OK)test_failed();
+   if(opus_encoder_ctl(enc, OPUS_SET_INBAND_FEC(0))!=OPUS_OK)test_failed();
+   if(opus_encoder_ctl(enc, OPUS_SET_DTX(0))!=OPUS_OK)test_failed();
+
+   for(rc=0;rc<3;rc++)
+   {
+      if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_VBR(rc<2))!=OPUS_OK)test_failed();
+      if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_VBR_CONSTRAINT(rc==1))!=OPUS_OK)test_failed();
+      if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_VBR_CONSTRAINT(rc==1))!=OPUS_OK)test_failed();
+      if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_INBAND_FEC(rc==0))!=OPUS_OK)test_failed();
+      for(j=0;j<16;j++)
+      {
+         int rate;
+         int modes[16]={0,0,0,0,0,0,0,0,2,2,2,2,2,2,2,2};
+         int rates[16]={4000,12000,32000,8000,16000,32000,48000,88000,4000,12000,32000,8000,16000,32000,48000,88000};
+         int frame[16]={160*1,160,80,160,160,80,40,20,160*1,160,80,160,160,80,40,20};
+         if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_INBAND_FEC(rc==0&&j==1))!=OPUS_OK)test_failed();
+         if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_FORCE_MODE(MODE_SILK_ONLY+modes[j]))!=OPUS_OK)test_failed();
+         rate=rates[j]+fast_rand()%rates[j];
+         if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_DTX(fast_rand()&1))!=OPUS_OK)test_failed();
+         if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_BITRATE(rate))!=OPUS_OK)test_failed();
+         count=i=0;
+         do {
+            int len,out_samples,frame_size,loss;
+            opus_int32 pred;
+            if(opus_multistream_encoder_ctl(MSenc, OPUS_GET_PREDICTION_DISABLED(&pred))!=OPUS_OK)test_failed();
+            if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_PREDICTION_DISABLED((int)(fast_rand()&15)<(pred?11:4)))!=OPUS_OK)test_failed();
+            frame_size=frame[j];
+            if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_COMPLEXITY((count>>2)%11))!=OPUS_OK)test_failed();
+            if(opus_multistream_encoder_ctl(MSenc, OPUS_SET_PACKET_LOSS_PERC((fast_rand()&15)&(fast_rand()%15)))!=OPUS_OK)test_failed();
+            if((fast_rand()&255)==0)
+            {
+               if(opus_multistream_encoder_ctl(MSenc, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+               if(opus_multistream_decoder_ctl(MSdec, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+               if((fast_rand()&3)!=0)
+               {
+                  if(opus_multistream_decoder_ctl(MSdec_err, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+               }
+            }
+            if((fast_rand()&255)==0)
+            {
+               if(opus_multistream_decoder_ctl(MSdec_err, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+            }
+            len = opus_multistream_encode(MSenc, &inbuf[i<<1], frame_size, packet, MAX_PACKET);
+            if(len<0 || len>MAX_PACKET)test_failed();
+            if(opus_multistream_encoder_ctl(MSenc, OPUS_GET_FINAL_RANGE(&enc_final_range))!=OPUS_OK)test_failed();
+            if((fast_rand()&3)==0)
+            {
+               if(opus_multistream_packet_pad(packet,len,len+1,2)!=OPUS_OK)test_failed();
+               len++;
+            }
+            if((fast_rand()&7)==0)
+            {
+               if(opus_multistream_packet_pad(packet,len,len+256,2)!=OPUS_OK)test_failed();
+               len+=256;
+            }
+            if((fast_rand()&3)==0)
+            {
+               len=opus_multistream_packet_unpad(packet,len,2);
+               if(len<1)test_failed();
+            }
+            out_samples = opus_multistream_decode(MSdec, packet, len, out2buf, MAX_FRAME_SAMP, 0);
+            if(out_samples!=frame_size*6)test_failed();
+            if(opus_multistream_decoder_ctl(MSdec, OPUS_GET_FINAL_RANGE(&dec_final_range))!=OPUS_OK)test_failed();
+            if(enc_final_range!=dec_final_range)test_failed();
+            /*LBRR decode*/
+            loss=(fast_rand()&63)==0;
+            out_samples = opus_multistream_decode(MSdec_err, packet, loss?0:len, out2buf, frame_size*6, (fast_rand()&3)!=0);
+            if(out_samples!=(frame_size*6))test_failed();
+            i+=frame_size;
+            count++;
+         }while(i<(SSAMPLES/12-MAX_FRAME_SAMP));
+         fprintf(stdout,"    Mode %s NB dual-mono MS encode %s, %6d bps OK.\n",mstrings[modes[j]],rc==0?" VBR":rc==1?"CVBR":" CBR",rate);
+         fflush(stdout);
+      }
+   }
+
+   bitrate_bps=512000;
+   fsize=fast_rand()%31;
+   fswitch=100;
+
+   debruijn2(6,db62);
+   count=i=0;
+   do {
+      unsigned char toc;
+      const unsigned char *frames[48];
+      short size[48];
+      int payload_offset;
+      opus_uint32 dec_final_range2;
+      int jj,dec2;
+      int len,out_samples;
+      int frame_size=fsizes[db62[fsize]];
+      opus_int32 offset=i%(SAMPLES-MAX_FRAME_SAMP);
+
+      opus_encoder_ctl(enc, OPUS_SET_BITRATE(bitrate_bps));
+
+      len = opus_encode(enc, &inbuf[offset<<1], frame_size, packet, MAX_PACKET);
+      if(len<0 || len>MAX_PACKET)test_failed();
+      count++;
+
+      opus_encoder_ctl(enc, OPUS_GET_FINAL_RANGE(&enc_final_range));
+
+      out_samples = opus_decode(dec, packet, len, &outbuf[offset<<1], MAX_FRAME_SAMP, 0);
+      if(out_samples!=frame_size)test_failed();
+
+      opus_decoder_ctl(dec, OPUS_GET_FINAL_RANGE(&dec_final_range));
+
+      /* compare final range encoder rng values of encoder and decoder */
+      if(dec_final_range!=enc_final_range)test_failed();
+
+      /* We fuzz the packet, but take care not to only corrupt the payload
+         Corrupted headers are tested elsewhere and we need to actually run
+         the decoders in order to compare them. */
+      if(opus_packet_parse(packet,len,&toc,frames,size,&payload_offset)<=0)test_failed();
+      if((fast_rand()&1023)==0)len=0;
+      for(j=(opus_int32)(frames[0]-packet);j<len;j++)for(jj=0;jj<8;jj++)packet[j]^=((!no_fuzz)&&((fast_rand()&1023)==0))<<jj;
+      out_samples = opus_decode(dec_err[0], len>0?packet:NULL, len, out2buf, MAX_FRAME_SAMP, 0);
+      if(out_samples<0||out_samples>MAX_FRAME_SAMP)test_failed();
+      if((len>0&&out_samples!=frame_size))test_failed(); /*FIXME use lastframe*/
+
+      opus_decoder_ctl(dec_err[0], OPUS_GET_FINAL_RANGE(&dec_final_range));
+
+      /*randomly select one of the decoders to compare with*/
+      dec2=fast_rand()%9+1;
+      out_samples = opus_decode(dec_err[dec2], len>0?packet:NULL, len, out2buf, MAX_FRAME_SAMP, 0);
+      if(out_samples<0||out_samples>MAX_FRAME_SAMP)test_failed(); /*FIXME, use factor, lastframe for loss*/
+
+      opus_decoder_ctl(dec_err[dec2], OPUS_GET_FINAL_RANGE(&dec_final_range2));
+      if(len>0&&dec_final_range!=dec_final_range2)test_failed();
+
+      fswitch--;
+      if(fswitch<1)
+      {
+        int new_size;
+        fsize=(fsize+1)%36;
+        new_size=fsizes[db62[fsize]];
+        if(new_size==960||new_size==480)fswitch=2880/new_size*(fast_rand()%19+1);
+        else fswitch=(fast_rand()%(2880/new_size))+1;
+      }
+      bitrate_bps=((fast_rand()%508000+4000)+bitrate_bps)>>1;
+      i+=frame_size;
+   }while(i<SAMPLES*4);
+   fprintf(stdout,"    All framesize pairs switching encode, %d frames OK.\n",count);
+   fflush(stdout);
+
+   if(opus_encoder_ctl(enc, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+   opus_encoder_destroy(enc);
+   if(opus_multistream_encoder_ctl(MSenc, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+   opus_multistream_encoder_destroy(MSenc);
+   if(opus_decoder_ctl(dec, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+   opus_decoder_destroy(dec);
+   if(opus_multistream_decoder_ctl(MSdec, OPUS_RESET_STATE)!=OPUS_OK)test_failed();
+   opus_multistream_decoder_destroy(MSdec);
+   opus_multistream_decoder_destroy(MSdec_err);
+   for(i=0;i<10;i++)opus_decoder_destroy(dec_err[i]);
+   free(inbuf);
+   free(outbuf);
+   free(out2buf);
+   return 0;
+}
+
+void print_usage(char* _argv[])
+{
+   fprintf(stderr,"Usage: %s [<seed>] [-fuzz <num_encoders> <num_settings_per_encoder>]\n",_argv[0]);
+}
+
+int main(int _argc, char **_argv)
+{
+   int args=1;
+   char * strtol_str=NULL;
+   const char * oversion;
+   const char * env_seed;
+   int env_used;
+   int num_encoders_to_fuzz=5;
+   int num_setting_changes=40;
+
+   env_used=0;
+   env_seed=getenv("SEED");
+   if(_argc>1)
+      iseed=strtol(_argv[1], &strtol_str, 10);  /* the first input argument might be the seed */
+   if(strtol_str!=NULL && strtol_str[0]=='\0')   /* iseed is a valid number */
+      args++;
+   else if(env_seed) {
+      iseed=atoi(env_seed);
+      env_used=1;
+   }
+   else iseed=(opus_uint32)time(NULL)^(((opus_uint32)getpid()&65535)<<16);
+   Rw=Rz=iseed;
+
+   while(args<_argc)
+   {
+      if(strcmp(_argv[args], "-fuzz")==0 && _argc==(args+3)) {
+         num_encoders_to_fuzz=strtol(_argv[args+1], &strtol_str, 10);
+         if(strtol_str[0]!='\0' || num_encoders_to_fuzz<=0) {
+            print_usage(_argv);
+            return EXIT_FAILURE;
+         }
+         num_setting_changes=strtol(_argv[args+2], &strtol_str, 10);
+         if(strtol_str[0]!='\0' || num_setting_changes<=0) {
+            print_usage(_argv);
+            return EXIT_FAILURE;
+         }
+         args+=3;
+      }
+      else {
+        print_usage(_argv);
+        return EXIT_FAILURE;
+      }
+   }
+
+   oversion=opus_get_version_string();
+   if(!oversion)test_failed();
+   fprintf(stderr,"Testing %s encoder. Random seed: %u (%.4X)\n", oversion, iseed, fast_rand() % 65535);
+   if(env_used)fprintf(stderr,"  Random seed set from the environment (SEED=%s).\n", env_seed);
+
+   regression_test();
+
+   /*Setting TEST_OPUS_NOFUZZ tells the tool not to send garbage data
+     into the decoders. This is helpful because garbage data
+     may cause the decoders to clip, which angers CLANG IOC.*/
+   run_test1(getenv("TEST_OPUS_NOFUZZ")!=NULL);
+
+   /* Fuzz encoder settings online */
+   if(getenv("TEST_OPUS_NOFUZZ")==NULL) {
+      fprintf(stderr,"Running fuzz_encoder_settings with %d encoder(s) and %d setting change(s) each.\n",
+              num_encoders_to_fuzz, num_setting_changes);
+      fuzz_encoder_settings(num_encoders_to_fuzz, num_setting_changes);
+   }
+
+   fprintf(stderr,"Tests completed successfully.\n");
+
+   return 0;
+}

third_party/opus/tests/test_opus_extensions.c

@@ -0,0 +1,450 @@
+/* Copyright (c) 2023 Amazon
+   Written by Michael Klingbeil */
+/*
+   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 COPYRIGHT OWNER
+   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.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#ifndef _WIN32
+#include <unistd.h>
+#else
+#include <process.h>
+#define getpid _getpid
+#endif
+
+#include "../src/opus_private.h"
+#include "test_opus_common.h"
+
+void test_extensions_generate_success(void)
+{
+   static const opus_extension_data ext[] = {
+      {2, 0, (const unsigned char *)"a", 1},
+      {32, 10, (const unsigned char *)"DRED", 4},
+      {33, 1, (const unsigned char *)"NOT DRED", 8},
+      {3, 4, (const unsigned char *)NULL, 0}
+   };
+
+   int result;
+   unsigned char packet[32];
+   const unsigned char *p = packet;
+   result = opus_packet_extensions_generate(packet, 23+4, ext, 4, 1);
+   expect_true(result == 23+4, "expected length 23+4");
+
+   /* expect padding */
+   expect_true(p[0] == 1 && p[1] == 1 && p[2] == 1 && p[3] == 1, "expected padding");
+   p += 4;
+
+   /* extension ID=2 */
+   expect_true((p[0] >> 1) == 2, "expected extension id 2");
+   /* For extension IDs 1 through 31, L=0 means that no data follows the
+      extension, whereas L=1 means that exactly one byte of extension data follows. */
+   expect_true((p[0] & 0x01) == 1, "expected L-bit set");
+   /* content */
+   expect_true(p[1] == 'a', "expected extension content");
+   p += 2;
+
+   /* next byte should increment the frame count, ID=1, L=0 */
+   expect_true(p[0] == 0x02, "bad frame separator");
+   p += 1;
+   /* extension ID=33 */
+   expect_true((p[0] >> 1) == 33, "expected extension id 33");
+   /* For IDs 32 to 127, L=0 signals that the extension data takes up the
+      rest of the padding, and L=1 signals that a length indicator follows. */
+   expect_true((p[0] & 0x01) == 1, "expected L-bit set");
+   /* content */
+   expect_true(p[1] == ext[2].len, "expected length");
+   p += 2;
+   expect_true(0 == memcmp(p, ext[2].data, ext[2].len), "expected extension content");
+   p += ext[2].len;
+
+   /* advance to frame 4, increment by 3 */
+   /* next byte should increment the frame count, ID=1, L=1 */
+   expect_true(p[0] == 0x03, "bad frame separator");
+   expect_true(p[1] == 0x03, "bad frame increment");
+   p += 2;
+   /* extension ID=3 */
+   expect_true((p[0] >> 1) == 3, "expected extension id 3");
+   /* For extension IDs 1 through 31, L=0 means that no data follows the
+      extension, whereas L=1 means that exactly one byte of extension data follows. */
+   expect_true((p[0] & 0x01) == 0, "expected L-bit unset");
+   p += 1;
+
+   /* advance to frame 10, increment by 6 */
+   /* next byte should increment the frame count, ID=1, L=1 */
+   expect_true(p[0] == 0x03, "bad frame separator");
+   expect_true(p[1] == 0x06, "bad frame increment");
+   p += 2;
+   /* extension ID=32 */
+   expect_true((p[0] >> 1) == 32, "expected extension id 32");
+   /* For IDs 32 to 127, L=0 signals that the extension data takes up the
+      rest of the padding */
+   expect_true((p[0] & 0x01) == 0, "expected L-bit unset");
+   p += 1;
+   expect_true(0 == memcmp(p, ext[1].data, ext[1].len), "expected extension content");
+}
+
+void test_extensions_generate_zero(void)
+{
+   int result;
+   unsigned char packet[32];
+
+   /* zero length packet, zero extensions */
+   result = opus_packet_extensions_generate(packet, 0, NULL, 0, 1);
+   expect_true(result == 0, "expected length 0");
+}
+
+void test_extensions_generate_no_padding(void)
+{
+   static const opus_extension_data ext[] = {
+      {2, 0, (const unsigned char *)"a", 1},
+      {32, 10, (const unsigned char *)"DRED", 4},
+      {33, 1, (const unsigned char *)"NOT DRED", 8},
+      {3, 4, (const unsigned char *)NULL, 0}
+   };
+
+   int result;
+   unsigned char packet[32];
+   result = opus_packet_extensions_generate(packet, sizeof(packet), ext, 4, 0);
+   expect_true(result == 23, "expected length 23");
+}
+
+void test_extensions_generate_fail(void)
+{
+   static const opus_extension_data ext[] = {
+      {2, 0, (const unsigned char *)"a", 1},
+      {32, 10, (const unsigned char *)"DRED", 4},
+      {33, 1, (const unsigned char *)"NOT DRED", 8},
+      {3, 4, (const unsigned char *)NULL, 0}
+   };
+
+   int result;
+   unsigned char packet[100];
+
+   /* buffer too small */
+   result = opus_packet_extensions_generate(packet, 4, ext, 4, 1);
+   expect_true(result == OPUS_BUFFER_TOO_SMALL, "expected OPUS_BUFFER_TOO_SMALL");
+
+   /* invalid id */
+   {
+      static const opus_extension_data id_too_big[] = {
+         {256, 0, (const unsigned char *)"a", 1},
+      };
+      result = opus_packet_extensions_generate(packet, sizeof(packet), id_too_big, 1, 1);
+      expect_true(result == OPUS_BAD_ARG, "expected OPUS_BAD_ARG");
+   }
+
+   /* invalid id */
+   {
+      static const opus_extension_data id_too_small[] = {
+         {1, 0, (const unsigned char *)"a", 1},
+      };
+      result = opus_packet_extensions_generate(packet, sizeof(packet), id_too_small, 1, 1);
+      expect_true(result == OPUS_BAD_ARG, "expected OPUS_BAD_ARG");
+   }
+
+   /* frame index too big */
+   {
+      static const opus_extension_data frame_too_big[] = {
+         {33, 48, (const unsigned char *)"a", 1},
+      };
+      result = opus_packet_extensions_generate(packet, sizeof(packet), frame_too_big, 1, 1);
+      expect_true(result == OPUS_BAD_ARG, "expected OPUS_BAD_ARG");
+   }
+
+   /* size too big for extension IDs 1 through 31 */
+   {
+      static const opus_extension_data size_too_big[] = {
+         {2, 0, (const unsigned char *)"abcd", 4},
+      };
+      result = opus_packet_extensions_generate(packet, sizeof(packet), size_too_big, 1, 1);
+      expect_true(result == OPUS_BAD_ARG, "expected OPUS_BAD_ARG");
+   }
+
+   /* negative size for extension IDs 1 through 31 */
+   {
+      static const opus_extension_data neg_size[] = {
+         {2, 0, NULL, -4},
+      };
+      result = opus_packet_extensions_generate(packet, sizeof(packet), neg_size, 1, 1);
+      expect_true(result == OPUS_BAD_ARG, "expected OPUS_BAD_ARG");
+   }
+
+   /* negative size for extension IDs 32 through 127 */
+   {
+      static const opus_extension_data neg_size_33[] = {
+         {33, 0, NULL, -4},
+      };
+      result = opus_packet_extensions_generate(packet, sizeof(packet), neg_size_33, 1, 1);
+      expect_true(result == OPUS_BAD_ARG, "expected OPUS_BAD_ARG");
+   }
+}
+
+void test_extensions_parse_success(void)
+{
+   static const opus_extension_data ext[] = {
+      {2, 0, (const unsigned char *)"a", 1},
+      {32, 10, (const unsigned char *)"DRED", 4},
+      {33, 1, (const unsigned char *)"NOT DRED", 8},
+      {3, 4, (const unsigned char *)NULL, 0}
+   };
+   opus_extension_data ext_out[10];
+   int nb_ext;
+   int len, result;
+   unsigned char packet[32];
+
+   nb_ext = 10;
+   len = opus_packet_extensions_generate(packet, 32, ext, 4, 1);
+   expect_true(len == 32, "expected length 32");
+   result = opus_packet_extensions_count(packet, len);
+   expect_true(result == 4, "expected opus_packet_extensions_count 4");
+   result = opus_packet_extensions_parse(packet, len, ext_out, &nb_ext);
+   expect_true(nb_ext == 4, "expected 4 extensions");
+
+   expect_true(ext_out[0].id == 2, "expected id 2");
+   expect_true(ext_out[0].frame == 0, "expected frame 0");
+   expect_true(ext_out[0].len == 1, "expected len 1");
+   expect_true(0 == memcmp(ext_out[0].data, ext[0].data, 1), "expected data");
+
+   expect_true(ext_out[1].id == 33, "expected id 33");
+   expect_true(ext_out[1].frame == 1, "expected frame 1");
+   expect_true(ext_out[1].len == 8, "expected len 8");
+   expect_true(0 == memcmp(ext_out[1].data, ext[2].data, 8), "expected data");
+
+   expect_true(ext_out[2].id == 3, "expected id 3");
+   expect_true(ext_out[2].frame == 4, "expected frame 4");
+   expect_true(ext_out[2].len == 0, "expected len 0");
+
+   expect_true(ext_out[3].id == 32, "expected id 32");
+   expect_true(ext_out[3].frame == 10, "expected frame 10");
+   expect_true(ext_out[3].len == 4, "expected len 4");
+   expect_true(0 == memcmp(ext_out[3].data, ext[1].data, 4), "expected data");
+}
+
+void test_extensions_parse_zero(void)
+{
+   static const opus_extension_data ext[] = {
+      {32, 1, (const unsigned char *)"DRED", 4},
+   };
+   int nb_ext;
+   int len, result;
+   unsigned char packet[32];
+
+   len = opus_packet_extensions_generate(packet, 32, ext, 1, 1);
+   expect_true(len == 32, "expected length 32");
+
+   nb_ext = 0;
+   result = opus_packet_extensions_parse(packet, len, NULL, &nb_ext);
+   expect_true(result == OPUS_BUFFER_TOO_SMALL, "expected OPUS_BUFFER_TOO_SMALL");
+}
+
+void test_extensions_parse_fail(void)
+{
+   static const opus_extension_data ext[] = {
+      {2, 0, (const unsigned char *)"a", 1},
+      {33, 1, (const unsigned char *)"NOT DRED", 8},
+      {3, 4, (const unsigned char *)NULL, 0},
+      {32, 10, (const unsigned char *)"DRED", 4}
+   };
+   opus_extension_data ext_out[10];
+   int nb_ext;
+   int len, result;
+   unsigned char packet[32];
+
+   /* create invalid length */
+   len = opus_packet_extensions_generate(packet, sizeof(packet), ext, 4, 0);
+   packet[4] = 255;
+   nb_ext = 10;
+   result = opus_packet_extensions_parse(packet, len, ext_out, &nb_ext);
+   expect_true(result == OPUS_INVALID_PACKET, "expected OPUS_INVALID_PACKET");
+   result = opus_packet_extensions_count(packet, len);
+   expect_true(result == OPUS_INVALID_PACKET, "expected OPUS_INVALID_PACKET");
+
+   /* create invalid frame increment */
+   nb_ext = 10;
+   len = opus_packet_extensions_generate(packet, sizeof(packet), ext, 4, 0);
+   packet[14] = 255;
+   result = opus_packet_extensions_parse(packet, len, ext_out, &nb_ext);
+   expect_true(result == OPUS_INVALID_PACKET, "expected OPUS_INVALID_PACKET");
+   /* note, opus_packet_extensions_count does not read the invalid frame increment
+      and tells us that we have 4 extensions */
+   result = opus_packet_extensions_count(packet, len);
+   expect_true(result == 4, "expected opus_packet_extensions_count to return 4");
+
+   /* not enough space */
+   nb_ext = 1;
+   len = opus_packet_extensions_generate(packet, sizeof(packet), ext, 4, 0);
+   result = opus_packet_extensions_parse(packet, len, ext_out, &nb_ext);
+   expect_true(result == OPUS_BUFFER_TOO_SMALL, "expected OPUS_BUFFER_TOO_SMALL");
+}
+
+#define NB_RANDOM_EXTENSIONS 100000000
+#define MAX_EXTENSION_SIZE 200
+#define MAX_NB_EXTENSIONS 100
+
+void test_random_extensions_parse(void)
+{
+   int i;
+   for (i=0;i<NB_RANDOM_EXTENSIONS;i++)
+   {
+      opus_extension_data ext_out[MAX_NB_EXTENSIONS];
+      int nb_ext;
+      unsigned char payload[MAX_EXTENSION_SIZE];
+      int len;
+      int j;
+      int result;
+      len = fast_rand()%(MAX_EXTENSION_SIZE+1);
+      for (j=0;j<len;j++)
+         payload[j] = fast_rand()&0xFF;
+      nb_ext = fast_rand()%(MAX_NB_EXTENSIONS+1);
+      result = opus_packet_extensions_parse(payload, len, ext_out, &nb_ext);
+      expect_true(result == OPUS_OK || result == OPUS_BUFFER_TOO_SMALL || result == OPUS_INVALID_PACKET, "expected OPUS_OK, OPUS_BUFFER_TOO_SMALL or OPUS_INVALID_PACKET");
+      /* Even if parsing fails, check that the extensions that got extracted make sense. */
+      for (j=0;j<nb_ext;j++)
+      {
+         expect_true(ext_out[j].frame >= 0 && ext_out[j].frame < 48, "expected frame between 0 and 47");
+         expect_true(ext_out[j].id >= 2 && ext_out[j].id <= 127, "expected id between 2 and 127");
+         expect_true(ext_out[j].data >= payload && ext_out[j].data+ext_out[j].len <= payload+len, "expected data to be within packet");
+      }
+   }
+}
+
+void test_opus_repacketizer_out_range_impl(void)
+{
+   OpusRepacketizer rp;
+   unsigned char packet[1024];
+   unsigned char packet_out[1024];
+   opus_int16 size[48];
+   const unsigned char *padding;
+   opus_int32 padding_len;
+   opus_extension_data ext_out[10];
+   int i;
+   int nb_ext;
+   int res, len;
+   int first_count = 0, second_count = 0;
+   static const opus_extension_data ext[] = {
+      {33, 0, (const unsigned char *)"abcdefg", 7},
+      {100, 0, (const unsigned char *)"uvwxyz", 6},
+   };
+
+   opus_repacketizer_init(&rp);
+
+   memset(packet, 0, sizeof(packet));
+   /* Hybrid Packet with 20 msec frames, Code 3 */
+   packet[0] = (15 << 3) | 3;
+   /* Code 3, padding bit set, 1 frame */
+   packet[1] = 1 << 6 | 1;
+   packet[2] = 0;
+   packet[3] = 0;
+
+   /* generate 2 extensions, id 33 and 100 */
+   len = opus_packet_extensions_generate(&packet[4], sizeof(packet)-4, ext, 2, 0);
+   /* update the padding length */
+   packet[2] = len;
+
+   /* concatenate 3 frames */
+   res = opus_repacketizer_cat(&rp, packet, 4+len);
+   /* for the middle frame, no padding, no extensions */
+   packet[1] = 1;
+   res = opus_repacketizer_cat(&rp, packet, 4);
+   /* switch back to extensions for the last frame extensions */
+   packet[1] = 1 << 6 | 1;
+   res = opus_repacketizer_cat(&rp, packet, 4+len);
+
+   expect_true(rp.nb_frames == 3, "Expected 3 frames");
+   res = opus_repacketizer_out_range_impl(&rp,
+      0, 3, /* begin, end */
+      packet_out, /* unsigned char *data */
+      sizeof(packet_out), /* opus_int32 maxlen */
+      0, /*int self_delimited */
+      0, /* int pad */
+      NULL, /* const opus_extension_data *extensions */
+      0 /* int nb_extensions */);
+   expect_true(res > 0, "expected valid packet length");
+
+   /* now verify that we have the expected extensions */
+   res = opus_packet_parse_impl(packet_out, res, 0, NULL, NULL, size,
+      NULL, NULL, &padding, &padding_len);
+   nb_ext = 10;
+   res = opus_packet_extensions_parse(padding, padding_len, ext_out, &nb_ext);
+   expect_true(nb_ext == 4, "Expected 4 extensions");
+   for (i = 0 ; i < nb_ext; i++)
+   {
+      if (ext_out[i].id == 33)
+      {
+         opus_test_assert(ext_out[i].len == ext[0].len);
+         opus_test_assert(0 == memcmp(ext_out[i].data, ext[0].data, ext[0].len));
+         first_count++;
+      }
+      else if (ext_out[i].id == 100)
+      {
+         opus_test_assert(ext_out[i].len == ext[1].len);
+         opus_test_assert(0 == memcmp(ext_out[i].data, ext[1].data, ext[1].len));
+         second_count++;
+      }
+      if (i < 2)
+         opus_test_assert(ext_out[i].frame == 0)
+      else
+         opus_test_assert(ext_out[i].frame == 2)
+   }
+   opus_test_assert(first_count == 2);
+   opus_test_assert(second_count == 2);
+}
+
+int main(int argc, char **argv)
+{
+   int env_used;
+   char *env_seed;
+   env_used=0;
+   env_seed=getenv("SEED");
+   if(argc>1)iseed=atoi(argv[1]);
+   else if(env_seed)
+   {
+      iseed=atoi(env_seed);
+      env_used=1;
+   }
+   else iseed=(opus_uint32)time(NULL)^(((opus_uint32)getpid()&65535)<<16);
+   Rw=Rz=iseed;
+
+   fprintf(stderr,"Testing extensions. Random seed: %u (%.4X)\n", iseed, fast_rand() % 65535);
+   if(env_used)fprintf(stderr,"  Random seed set from the environment (SEED=%s).\n", env_seed);
+
+   test_extensions_generate_success();
+   test_extensions_generate_zero();
+   test_extensions_generate_no_padding();
+   test_extensions_generate_fail();
+   test_extensions_parse_success();
+   test_extensions_parse_zero();
+   test_extensions_parse_fail();
+   test_random_extensions_parse();
+   test_opus_repacketizer_out_range_impl();
+   fprintf(stderr,"Tests completed successfully.\n");
+   return 0;
+}

third_party/opus/tests/test_opus_padding.c

@@ -0,0 +1,94 @@
+/* Copyright (c) 2012 Xiph.Org Foundation
+   Written by Jüri Aedla and Ralph Giles */
+/*
+   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 COPYRIGHT OWNER
+   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.
+*/
+
+/* Check for overflow in reading the padding length.
+ * http://lists.xiph.org/pipermail/opus/2012-November/001834.html
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "opus.h"
+#include "test_opus_common.h"
+
+#define PACKETSIZE 16909318
+#define CHANNELS 2
+#define FRAMESIZE 5760
+
+void test_overflow(void)
+{
+  OpusDecoder *decoder;
+  int result;
+  int error;
+
+  unsigned char *in = malloc(PACKETSIZE);
+  opus_int16 *out = malloc(FRAMESIZE*CHANNELS*sizeof(*out));
+
+  fprintf(stderr, "  Checking for padding overflow... ");
+  if (!in || !out) {
+    fprintf(stderr, "FAIL (out of memory)\n");
+    test_failed();
+  }
+  in[0] = 0xff;
+  in[1] = 0x41;
+  memset(in + 2, 0xff, PACKETSIZE - 3);
+  in[PACKETSIZE-1] = 0x0b;
+
+  decoder = opus_decoder_create(48000, CHANNELS, &error);
+  result = opus_decode(decoder, in, PACKETSIZE, out, FRAMESIZE, 0);
+  opus_decoder_destroy(decoder);
+
+  free(in);
+  free(out);
+
+  if (result != OPUS_INVALID_PACKET) {
+    fprintf(stderr, "FAIL!\n");
+    test_failed();
+  }
+
+  fprintf(stderr, "OK.\n");
+}
+
+int main(void)
+{
+  const char *oversion;
+
+  iseed = 0;
+  oversion = opus_get_version_string();
+  if (!oversion) test_failed();
+  fprintf(stderr, "Testing %s padding.\n", oversion);
+
+  test_overflow();
+
+  fprintf(stderr, "All padding tests passed.\n");
+
+  return 0;
+}

third_party/opus/tests/test_opus_projection.c

@@ -0,0 +1,393 @@
+/* Copyright (c) 2017 Google Inc.
+   Written by Andrew Allen */
+/*
+   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 COPYRIGHT OWNER
+   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.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+#include "float_cast.h"
+#include "opus.h"
+#include "test_opus_common.h"
+#include "opus_projection.h"
+#include "mathops.h"
+#include "../src/mapping_matrix.h"
+#include "mathops.h"
+
+#define BUFFER_SIZE 960
+#define MAX_DATA_BYTES 32768
+#define MAX_FRAME_SAMPLES 5760
+#define ERROR_TOLERANCE 1
+
+#define SIMPLE_MATRIX_SIZE 12
+#define SIMPLE_MATRIX_FRAME_SIZE 10
+#define SIMPLE_MATRIX_INPUT_SIZE 30
+#define SIMPLE_MATRIX_OUTPUT_SIZE 40
+
+int assert_is_equal(
+  const opus_val16 *a, const opus_int16 *b, int size, opus_int16 tolerance)
+{
+  int i;
+  for (i = 0; i < size; i++)
+  {
+#ifdef FIXED_POINT
+    opus_int16 val = a[i];
+#else
+    opus_int16 val = FLOAT2INT16(a[i]);
+#endif
+    if (abs(val - b[i]) > tolerance)
+      return 1;
+  }
+  return 0;
+}
+
+int assert_is_equal_short(
+  const opus_int16 *a, const opus_int16 *b, int size, opus_int16 tolerance)
+{
+  int i;
+  for (i = 0; i < size; i++)
+    if (abs(a[i] - b[i]) > tolerance)
+      return 1;
+  return 0;
+}
+
+void test_simple_matrix(void)
+{
+  const MappingMatrix simple_matrix_params = {4, 3, 0};
+  const opus_int16 simple_matrix_data[SIMPLE_MATRIX_SIZE] = {0, 32767, 0, 0, 32767, 0, 0, 0, 0, 0, 0, 32767};
+  const opus_int16 input_int16[SIMPLE_MATRIX_INPUT_SIZE] = {
+    32767, 0, -32768, 29491, -3277, -29491, 26214, -6554, -26214, 22938, -9830,
+    -22938, 19661, -13107, -19661, 16384, -16384, -16384, 13107, -19661, -13107,
+    9830, -22938, -9830, 6554, -26214, -6554, 3277, -29491, -3277};
+  const opus_int16 expected_output_int16[SIMPLE_MATRIX_OUTPUT_SIZE] = {
+    0, 32767, 0, -32768, -3277, 29491, 0, -29491, -6554, 26214, 0, -26214,
+    -9830, 22938, 0, -22938, -13107, 19661, 0, -19661, -16384, 16384, 0, -16384,
+    -19661, 13107, 0, -13107, -22938, 9830, 0, -9830, -26214, 6554, 0, -6554,
+    -29491, 3277, 0, -3277};
+
+  int i, ret;
+  opus_int32 simple_matrix_size;
+  opus_val16 *input_val16;
+  opus_val16 *output_val16;
+  opus_int16 *output_int16;
+  MappingMatrix *simple_matrix;
+
+  /* Allocate input/output buffers. */
+  input_val16 = (opus_val16 *)opus_alloc(sizeof(opus_val16) * SIMPLE_MATRIX_INPUT_SIZE);
+  output_int16 = (opus_int16 *)opus_alloc(sizeof(opus_int16) * SIMPLE_MATRIX_OUTPUT_SIZE);
+  output_val16 = (opus_val16 *)opus_alloc(sizeof(opus_val16) * SIMPLE_MATRIX_OUTPUT_SIZE);
+
+  /* Initialize matrix */
+  simple_matrix_size = mapping_matrix_get_size(simple_matrix_params.rows,
+    simple_matrix_params.cols);
+  if (!simple_matrix_size)
+    test_failed();
+
+  simple_matrix = (MappingMatrix *)opus_alloc(simple_matrix_size);
+  mapping_matrix_init(simple_matrix, simple_matrix_params.rows,
+    simple_matrix_params.cols, simple_matrix_params.gain, simple_matrix_data,
+    sizeof(simple_matrix_data));
+
+  /* Copy inputs. */
+  for (i = 0; i < SIMPLE_MATRIX_INPUT_SIZE; i++)
+  {
+#ifdef FIXED_POINT
+    input_val16[i] = input_int16[i];
+#else
+    input_val16[i] = (1/32768.f)*input_int16[i];
+#endif
+  }
+
+  /* _in_short */
+  for (i = 0; i < SIMPLE_MATRIX_OUTPUT_SIZE; i++)
+    output_val16[i] = 0;
+  for (i = 0; i < simple_matrix->rows; i++)
+  {
+    mapping_matrix_multiply_channel_in_short(simple_matrix,
+      input_int16, simple_matrix->cols, &output_val16[i], i,
+      simple_matrix->rows, SIMPLE_MATRIX_FRAME_SIZE);
+  }
+  ret = assert_is_equal(output_val16, expected_output_int16, SIMPLE_MATRIX_OUTPUT_SIZE, ERROR_TOLERANCE);
+  if (ret)
+    test_failed();
+
+  /* _out_short */
+  for (i = 0; i < SIMPLE_MATRIX_OUTPUT_SIZE; i++)
+    output_int16[i] = 0;
+  for (i = 0; i < simple_matrix->cols; i++)
+  {
+    mapping_matrix_multiply_channel_out_short(simple_matrix,
+      &input_val16[i], i, simple_matrix->cols, output_int16,
+      simple_matrix->rows, SIMPLE_MATRIX_FRAME_SIZE);
+  }
+  ret = assert_is_equal_short(output_int16, expected_output_int16, SIMPLE_MATRIX_OUTPUT_SIZE, ERROR_TOLERANCE);
+  if (ret)
+    test_failed();
+
+#if !defined(DISABLE_FLOAT_API) && !defined(FIXED_POINT)
+  /* _in_float */
+  for (i = 0; i < SIMPLE_MATRIX_OUTPUT_SIZE; i++)
+    output_val16[i] = 0;
+  for (i = 0; i < simple_matrix->rows; i++)
+  {
+    mapping_matrix_multiply_channel_in_float(simple_matrix,
+      input_val16, simple_matrix->cols, &output_val16[i], i,
+      simple_matrix->rows, SIMPLE_MATRIX_FRAME_SIZE);
+  }
+  ret = assert_is_equal(output_val16, expected_output_int16, SIMPLE_MATRIX_OUTPUT_SIZE, ERROR_TOLERANCE);
+  if (ret)
+    test_failed();
+
+  /* _out_float */
+  for (i = 0; i < SIMPLE_MATRIX_OUTPUT_SIZE; i++)
+    output_val16[i] = 0;
+  for (i = 0; i < simple_matrix->cols; i++)
+  {
+    mapping_matrix_multiply_channel_out_float(simple_matrix,
+      &input_val16[i], i, simple_matrix->cols, output_val16,
+      simple_matrix->rows, SIMPLE_MATRIX_FRAME_SIZE);
+  }
+  ret = assert_is_equal(output_val16, expected_output_int16, SIMPLE_MATRIX_OUTPUT_SIZE, ERROR_TOLERANCE);
+  if (ret)
+    test_failed();
+#endif
+
+  opus_free(input_val16);
+  opus_free(output_int16);
+  opus_free(output_val16);
+  opus_free(simple_matrix);
+}
+
+void test_creation_arguments(const int channels, const int mapping_family)
+{
+  int streams;
+  int coupled_streams;
+  int enc_error;
+  int dec_error;
+  int ret;
+  OpusProjectionEncoder *st_enc = NULL;
+  OpusProjectionDecoder *st_dec = NULL;
+
+  const opus_int32 Fs = 48000;
+  const int application = OPUS_APPLICATION_AUDIO;
+
+  int order_plus_one = (int)floor(sqrt((float)channels));
+  int nondiegetic_channels = channels - order_plus_one * order_plus_one;
+
+  int is_channels_valid = 0;
+  int is_projection_valid = 0;
+
+  st_enc = opus_projection_ambisonics_encoder_create(Fs, channels,
+    mapping_family, &streams, &coupled_streams, application, &enc_error);
+  if (st_enc != NULL)
+  {
+    opus_int32 matrix_size;
+    unsigned char *matrix;
+
+    ret = opus_projection_encoder_ctl(st_enc,
+      OPUS_PROJECTION_GET_DEMIXING_MATRIX_SIZE_REQUEST, &matrix_size);
+    if (ret != OPUS_OK || !matrix_size)
+      test_failed();
+
+    matrix = (unsigned char *)opus_alloc(matrix_size);
+    ret = opus_projection_encoder_ctl(st_enc,
+      OPUS_PROJECTION_GET_DEMIXING_MATRIX_REQUEST, matrix, matrix_size);
+
+    opus_projection_encoder_destroy(st_enc);
+
+    st_dec = opus_projection_decoder_create(Fs, channels, streams,
+      coupled_streams, matrix, matrix_size, &dec_error);
+    if (st_dec != NULL)
+    {
+      opus_projection_decoder_destroy(st_dec);
+    }
+    opus_free(matrix);
+  }
+
+  is_channels_valid = (order_plus_one >= 2 && order_plus_one <= 6) &&
+    (nondiegetic_channels == 0 || nondiegetic_channels == 2);
+  is_projection_valid = (enc_error == OPUS_OK && dec_error == OPUS_OK);
+  if (is_channels_valid ^ is_projection_valid)
+  {
+    fprintf(stderr, "Channels: %d, Family: %d\n", channels, mapping_family);
+    fprintf(stderr, "Order+1: %d, Non-diegetic Channels: %d\n",
+      order_plus_one, nondiegetic_channels);
+    fprintf(stderr, "Streams: %d, Coupled Streams: %d\n",
+      streams, coupled_streams);
+    test_failed();
+  }
+}
+
+void generate_music(short *buf, opus_int32 len, opus_int32 channels)
+{
+   opus_int32 i,j,k;
+   opus_int32 *a,*b,*c,*d;
+   a = (opus_int32 *)malloc(sizeof(opus_int32) * channels);
+   b = (opus_int32 *)malloc(sizeof(opus_int32) * channels);
+   c = (opus_int32 *)malloc(sizeof(opus_int32) * channels);
+   d = (opus_int32 *)malloc(sizeof(opus_int32) * channels);
+   memset(a, 0, sizeof(opus_int32) * channels);
+   memset(b, 0, sizeof(opus_int32) * channels);
+   memset(c, 0, sizeof(opus_int32) * channels);
+   memset(d, 0, sizeof(opus_int32) * channels);
+   j=0;
+
+   for(i=0;i<len;i++)
+   {
+     for(k=0;k<channels;k++)
+     {
+      opus_uint32 r;
+      opus_int32 v;
+      v=(((j*((j>>12)^((j>>10|j>>12)&26&j>>7)))&128)+128)<<15;
+      r=fast_rand();v+=r&65535;v-=r>>16;
+      b[k]=v-a[k]+((b[k]*61+32)>>6);a[k]=v;
+      c[k]=(30*(c[k]+b[k]+d[k])+32)>>6;d[k]=b[k];
+      v=(c[k]+128)>>8;
+      buf[i*channels+k]=v>32767?32767:(v<-32768?-32768:v);
+      if(i%6==0)j++;
+     }
+   }
+
+   free(a);
+   free(b);
+   free(c);
+   free(d);
+}
+
+void test_encode_decode(opus_int32 bitrate, opus_int32 channels,
+                        const int mapping_family)
+{
+  const opus_int32 Fs = 48000;
+  const int application = OPUS_APPLICATION_AUDIO;
+
+  OpusProjectionEncoder *st_enc;
+  OpusProjectionDecoder *st_dec;
+  int streams;
+  int coupled;
+  int error;
+  short *buffer_in;
+  short *buffer_out;
+  unsigned char data[MAX_DATA_BYTES] = { 0 };
+  int len;
+  int out_samples;
+  opus_int32 matrix_size = 0;
+  unsigned char *matrix = NULL;
+
+  buffer_in = (short *)malloc(sizeof(short) * BUFFER_SIZE * channels);
+  buffer_out = (short *)malloc(sizeof(short) * BUFFER_SIZE * channels);
+
+  st_enc = opus_projection_ambisonics_encoder_create(Fs, channels,
+    mapping_family, &streams, &coupled, application, &error);
+  if (error != OPUS_OK) {
+    fprintf(stderr,
+      "Couldn\'t create encoder with %d channels and mapping family %d.\n",
+      channels, mapping_family);
+    free(buffer_in);
+    free(buffer_out);
+    test_failed();
+  }
+
+  error = opus_projection_encoder_ctl(st_enc,
+    OPUS_SET_BITRATE(bitrate * 1000 * (streams + coupled)));
+  if (error != OPUS_OK)
+  {
+    goto bad_cleanup;
+  }
+
+  error = opus_projection_encoder_ctl(st_enc,
+    OPUS_PROJECTION_GET_DEMIXING_MATRIX_SIZE_REQUEST, &matrix_size);
+  if (error != OPUS_OK || !matrix_size)
+  {
+    goto bad_cleanup;
+  }
+
+  matrix = (unsigned char *)opus_alloc(matrix_size);
+  error = opus_projection_encoder_ctl(st_enc,
+    OPUS_PROJECTION_GET_DEMIXING_MATRIX_REQUEST, matrix, matrix_size);
+
+  st_dec = opus_projection_decoder_create(Fs, channels, streams, coupled,
+    matrix, matrix_size, &error);
+  opus_free(matrix);
+
+  if (error != OPUS_OK) {
+    fprintf(stderr,
+      "Couldn\'t create decoder with %d channels, %d streams "
+      "and %d coupled streams.\n", channels, streams, coupled);
+    goto bad_cleanup;
+  }
+
+  generate_music(buffer_in, BUFFER_SIZE, channels);
+
+  len = opus_projection_encode(
+    st_enc, buffer_in, BUFFER_SIZE, data, MAX_DATA_BYTES);
+  if(len<0 || len>MAX_DATA_BYTES) {
+    fprintf(stderr,"opus_encode() returned %d\n", len);
+    goto bad_cleanup;
+  }
+
+  out_samples = opus_projection_decode(
+    st_dec, data, len, buffer_out, MAX_FRAME_SAMPLES, 0);
+  if(out_samples!=BUFFER_SIZE) {
+    fprintf(stderr,"opus_decode() returned %d\n", out_samples);
+    goto bad_cleanup;
+  }
+
+  opus_projection_decoder_destroy(st_dec);
+  opus_projection_encoder_destroy(st_enc);
+  free(buffer_in);
+  free(buffer_out);
+  return;
+bad_cleanup:
+  free(buffer_in);
+  free(buffer_out);
+  test_failed();
+}
+
+int main(int _argc, char **_argv)
+{
+  unsigned int i;
+
+  (void)_argc;
+  (void)_argv;
+
+  /* Test simple matrix multiplication routines. */
+  test_simple_matrix();
+
+  /* Test full range of channels in creation arguments. */
+  for (i = 0; i < 255; i++)
+    test_creation_arguments(i, 3);
+
+  /* Test encode/decode pipeline. */
+  test_encode_decode(64 * 18, 18, 3);
+
+  fprintf(stderr, "All projection tests passed.\n");
+  return 0;
+}
+