Test encoder for SB-CELP

git-svn-id: http://svn.xiph.org/trunk/speex@3228 0101bb08-14d6-0310-b084-bc0e0c8e3800

1 files changed, 77 insertions, 0 deletions

diff --git a/libspeex/testenc_sb.c b/libspeex/testenc_sb.c
new file mode 100644
index 0000000..7b3437f
--- /dev/null
+++ b/libspeex/testenc_sb.c
@@ -0,0 +1,77 @@
+#include "sb_celp.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+#define FRAME_SIZE 320
+#include <math.h>
+int main(int argc, char **argv)
+{
+   char *inFile, *outFile, *bitsFile;
+   FILE *fin, *fout, *fbits=NULL;
+   short in[FRAME_SIZE];
+   float input[FRAME_SIZE], bak[FRAME_SIZE], bak2[FRAME_SIZE];
+   char cbits[200];
+   int nbBits;
+   int i;
+   SBEncState st;
+   FrameBits bits;
+
+   for (i=0;i<FRAME_SIZE;i++)
+      bak2[i]=0;
+   sb_encoder_init(&st, &mp_sb_mode);
+   if (argc != 4 && argc != 3)
+   {
+      fprintf (stderr, "Usage: encode [in file] [out file] [bits file]\nargc = %d", argc);
+      exit(1);
+   }
+   inFile = argv[1];
+   fin = fopen(inFile, "r");
+   outFile = argv[2];
+   fout = fopen(outFile, "w");
+   if (argc==4)
+   {
+      bitsFile = argv[3];
+      fbits = fopen(bitsFile, "w");
+   }
+   frame_bits_init(&bits);
+   while (!feof(fin))
+   {
+      fread(in, sizeof(short), FRAME_SIZE, fin);
+      for (i=0;i<FRAME_SIZE;i++)
+         bak[i]=input[i]=in[i];
+      frame_bits_reset(&bits);
+      sb_encode(&st, input, &bits);
+      nbBits = frame_bits_write(&bits, cbits, 200);
+      printf ("Encoding frame in %d bits\n", nbBits*8);
+      if (argc==4)
+         fwrite(cbits, 1, nbBits, fbits);
+      {
+         float enoise=0, esig=0, snr;
+         for (i=0;i<FRAME_SIZE;i++)
+         {
+            enoise+=(bak2[i]-input[i])*(bak2[i]-input[i]);
+            esig += bak2[i]*bak2[i];
+         }
+         snr = 10*log10((esig+1)/(enoise+1));
+         printf ("real SNR = %f\n", snr);
+      }
+      frame_bits_rewind(&bits);
+      
+      frame_bits_reset(&bits);
+      for (i=0;i<FRAME_SIZE;i++)
+      {
+         if (input[i]>32000)
+            input[i]=32000;
+         else if (input[i]<-32000)
+            input[i]=-32000;
+      }
+      for (i=0;i<FRAME_SIZE;i++)
+         in[i]=input[i];
+      for (i=0;i<FRAME_SIZE;i++)
+         bak2[i]=bak[i];
+      fwrite(in, sizeof(short), FRAME_SIZE, fout);
+   }
+   
+   sb_encoder_destroy(&st);
+   return 1;
+}