using namespace ARDOUR;
AudioBuffer::AudioBuffer(size_t capacity)
- : Buffer(DataType::AUDIO, capacity)
+ : Buffer (DataType::AUDIO)
, _owns_data (false)
, _data (0)
{
- if (_capacity > 0) {
+ if (capacity) {
_owns_data = true; // prevent resize() from gagging
- resize (_capacity);
+ resize (capacity);
_silent = false; // force silence on the intial buffer state
- silence (_capacity);
+ clear ();
}
}
AudioBuffer::resize (size_t size)
{
if (!_owns_data) {
+ /* XXX how the hell is this enforced? */
+ _capacity = size;
return;
}
- if (size < _capacity) {
- _size = size;
+ if (_data && size < _capacity) {
+ /* buffer is already large enough */
return;
}
free (_data);
+ cache_aligned_malloc ((void**) &_data, sizeof (Sample) * size);
+
_capacity = size;
- _size = size;
_silent = false;
-
- cache_aligned_malloc ((void**) &_data, sizeof (Sample) * _capacity);
}
bool
AudioBuffer::check_silence (pframes_t nframes, pframes_t& n) const
{
- for (n = 0; n < _size && n < nframes; ++n) {
+ for (n = 0; n < nframes; ++n) {
if (_data[n] != Sample (0)) {
return false;
}
}
return true;
}
+
+void
+AudioBuffer::silence (framecnt_t len, framecnt_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;
+}