Create local copy of Opus v1.1.2

webrtc/modules/audio_coding/codecs/opus/opus/src/tests/test_opus_encode.c

Index: webrtc/modules/audio_coding/codecs/opus/opus/src/tests/test_opus_encode.c
diff --git a/webrtc/modules/audio_coding/codecs/opus/opus/src/tests/test_opus_encode.c b/webrtc/modules/audio_coding/codecs/opus/opus/src/tests/test_opus_encode.c
new file mode 100644
index 0000000000000000000000000000000000000000..132d074d3025456f9d2297e7988e85ac51610b85
--- /dev/null
+++ b/webrtc/modules/audio_coding/codecs/opus/opus/src/tests/test_opus_encode.c
@@ -0,0 +1,509 @@
+/* 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)
+
+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 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;
+   int rc,j,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");
+
+   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();
+
+   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();
+      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);
+      }
+   }
+
+   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 pred,len,out_samples,frame_size,loss;
+            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);
+      }
+   }
+
+   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=(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);
+
+   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;
+}
+
+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)^((getpid()&65535)<<16);
+   Rw=Rz=iseed;
+
+   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);
+
+   /*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);
+
+   fprintf(stderr,"Tests completed successfully.\n");
+
+   return 0;
+}