+ cache_aligned_malloc ((void**) &_data, sizeof (Sample) * size);
+
+ _capacity = size;
+ _silent = false;
+}
+
+bool
+AudioBuffer::check_silence (pframes_t nframes, pframes_t& n) const
+{
+ for (n = 0; n < nframes; ++n) {
+ if (_data[n] != Sample (0)) {
+ return false;
+ }
+ }
+ return true;
+}
+
+void
+AudioBuffer::silence (samplecnt_t len, samplecnt_t offset) {
+
+ if (!_silent) {
+ assert(_capacity > 0);
+ assert(offset + len <= _capacity);
+ memset(_data + offset, 0, sizeof (Sample) * len);
+ if (len == _capacity) {
+ _silent = true;
+ }
+ }
+ _written = true;
+}