*/
#include <ardour/audio_buffer.h>
+#include <pbd/error.h>
+#include <errno.h>
+
+#include "i18n.h"
#ifdef __x86_64__
static const int CPU_CACHE_ALIGN = 64;
static const int CPU_CACHE_ALIGN = 16; /* arguably 32 on most arches, but it matters less */
#endif
-namespace ARDOUR {
-
+using namespace PBD;
+using namespace ARDOUR;
AudioBuffer::AudioBuffer(size_t capacity)
: Buffer(DataType::AUDIO, capacity)
if (_capacity > 0) {
_owns_data = true; // prevent resize() from gagging
resize (_capacity);
+ _silent = false; // force silence on the intial buffer state
silence (_capacity);
}
}
free(_data);
}
+/* called to replace a pointer to an external buffer (e.g. JACK) with
+ buffer-owned memory.
+*/
+
+void
+AudioBuffer::replace_data (size_t capacity)
+{
+ _owns_data = true;
+ _data = 0;
+ _capacity = 0; // force reallocation
+ resize (capacity);
+}
+
void
AudioBuffer::resize (size_t size)
{
- if (!_owns_data || (size < _capacity)) {
+ if (!_owns_data) {
+ return;
+ }
+
+ if (size < _capacity) {
+ _size = size;
return;
}
#ifdef NO_POSIX_MEMALIGN
_data = (Sample *) malloc(sizeof(Sample) * _capacity);
#else
- posix_memalign((void**)&_data, CPU_CACHE_ALIGN, sizeof(Sample) * _capacity);
+ if (posix_memalign((void**)&_data, CPU_CACHE_ALIGN, sizeof(Sample) * _capacity)) {
+ fatal << string_compose (_("Memory allocation error: posix_memalign (%1 * %2) failed (%3)"),
+ CPU_CACHE_ALIGN, sizeof (Sample) * _capacity, strerror (errno)) << endmsg;
+ }
#endif
-
- _owns_data = true;
+
}
-} // namespace ARDOUR
+void
+AudioBuffer::copy_to_internal (Sample* p, nframes_t cnt, nframes_t offset)
+{
+ memcpy (_data + offset, p, sizeof(Sample*) * cnt);
+}