Commit mods.

git-svn-id: http://op25.osmocom.org/svn/trunk@172 65a5c917-d112-43f1-993d-58c26a4786be

imbe/main.cc

@@ -1,27 +1,63 @@
-#include <cstdio>
-#include <cstdlib>
 #include <software_imbe_decoder.h>
 
 #include <boost/scoped_ptr.hpp>
+#include <cstdio>
+#include <cstdlib>
 
 using namespace boost;
 
+/**
+ * Insert bits from an octet buffer into a voice_codeword.
+ *
+ * \param in The octet buffer to read from.
+ * \pram begin The first bit position.
+ * \param end The last bit position.
+ * \param out A reference to the voice_codeword to write.
+ * \return The number of octers written.
+ */
+size_t
+extract(const uint8_t *in, size_t begin, size_t end, voice_codeword& out)
+{
+   size_t nof_bits = 0;
+   if(begin < end) {
+      nof_bits = end - begin;
+      out.resize(nof_bits);
+      for(size_t i = begin; i < end; ++i) {
+         out[i - begin] = in[i / 8] & (1 << (7 - (i % 8)));
+      }
+   }
+   return nof_bits;
+}
+
+/**
+ * Convert a file created by offline_imbe_decoder into an audio file.
+ */
 int
 main(int ac, char **av)
 {
+   FILE *out = fopen("audio.pcm", "w");
 	scoped_ptr<software_imbe_decoder> imbe(new software_imbe_decoder());
    while(--ac) {
-      FILE *fp = fopen(*++av, "r");
-      if(fp) {
+      FILE *in = fopen(*++av, "r");
+      if(in) {
          uint8_t buf[18];
-         while(1 == fread(buf, sizeof(buf), 1, fp)) {
-            imbe->decode(buf);
+         while(1 == fread(buf, sizeof(buf), 1, in)) {
+            voice_codeword cw(144);
+            extract(buf, 0, 144, cw);
+            imbe->decode(cw);
+            audio_samples *audio = imbe->audio();
+            for(audio_samples::iterator i(audio->begin()); i != audio->end(); ++i) {
+               float f = *i;
+               fwrite(&f, sizeof(f), 1, out);
+            }
+            audio->clear();
          }
-         fclose(fp);
+         fclose(in);
       } else {
          perror(*av);
          exit(1);
       }
    }
+   fclose(out);
    return(0);
 }