void
AudioBuffers::allocate (int channels, int frames)
{
+ assert (frames >= 0);
+ assert (channels >= 0);
+
_channels = channels;
_frames = frames;
_allocated_frames = frames;
void
AudioBuffers::copy_from (AudioBuffers const * from, int frames_to_copy, int read_offset, int write_offset)
{
+ if (frames_to_copy == 0) {
+ /* Prevent the asserts from firing if there is nothing to do */
+ return;
+ }
+
assert (from->channels() == channels());
assert (from);
AudioBuffers::accumulate_frames (AudioBuffers const * from, int read_offset, int write_offset, int frames)
{
assert (_channels == from->channels ());
+ assert (read_offset >= 0);
+ assert (write_offset >= 0);
for (int i = 0; i < _channels; ++i) {
for (int j = 0; j < frames; ++j) {
}
}
}
+
+/** @param c Channel index.
+ * @return AudioBuffers object containing only channel `c' from this AudioBuffers.
+ */
+shared_ptr<AudioBuffers>
+AudioBuffers::channel (int c) const
+{
+ shared_ptr<AudioBuffers> o (new AudioBuffers (1, frames ()));
+ o->copy_channel_from (this, c, 0);
+ return o;
+}
+
+void
+AudioBuffers::copy_channel_from (AudioBuffers const * from, int from_channel, int to_channel)
+{
+ assert (from->frames() == frames());
+ memcpy (data(to_channel), from->data(from_channel), frames() * sizeof (float));
+}
+
+shared_ptr<AudioBuffers>
+AudioBuffers::clone () const
+{
+ shared_ptr<AudioBuffers> b (new AudioBuffers (channels (), frames ()));
+ b->copy_from (this, frames (), 0, 0);
+ return b;
+}