#include <iostream>
#include <ardour/types.h>
#include <ardour/data_type.h>
+#include <ardour/runtime_functions.h>
namespace ARDOUR {
* Based on this you can static cast a Buffer* to the desired type. */
DataType type() const { return _type; }
+ bool silent() const { return _silent; }
+
/** Clear (eg zero, or empty) buffer starting at TIME @a offset */
- virtual void silence(jack_nframes_t len, jack_nframes_t offset=0) = 0;
+ virtual void silence(nframes_t len, nframes_t offset=0) = 0;
/** Clear the entire buffer */
virtual void clear() { silence(_capacity, 0); }
- virtual void read_from(const Buffer& src, jack_nframes_t offset, jack_nframes_t len) = 0;
+ virtual void read_from(const Buffer& src, nframes_t offset, nframes_t len) = 0;
protected:
Buffer(DataType type, size_t capacity)
- : _type(type), _capacity(capacity), _size(0)
+ : _type(type), _capacity(capacity), _size(0), _silent(true)
{}
DataType _type;
size_t _capacity;
size_t _size;
+ bool _silent;
private:
// Prevent copies (undefined)
~AudioBuffer();
- void silence(jack_nframes_t len, jack_nframes_t offset=0)
+ void silence(nframes_t len, nframes_t offset=0)
{
- assert(_capacity > 0);
- assert(offset + len <= _capacity);
- memset(_data + offset, 0, sizeof (Sample) * len);
+ if (!_silent) {
+ assert(_capacity > 0);
+ assert(offset + len <= _capacity);
+ memset(_data + offset, 0, sizeof (Sample) * len);
+ if (offset == 0 && len == _capacity) {
+ _silent = true;
+ }
+ }
}
/** Read @a len frames FROM THE START OF @a src into self at @a offset */
- void read_from(const Buffer& src, jack_nframes_t len, jack_nframes_t offset)
+ void read_from(const Buffer& src, nframes_t len, nframes_t offset)
{
assert(_capacity > 0);
assert(src.type() == _type == DataType::AUDIO);
assert(offset + len <= _capacity);
- memcpy(_data + offset, ((AudioBuffer&)src).data(len), sizeof(Sample) * len);
+ memcpy(_data + offset, ((AudioBuffer&)src).data(), sizeof(Sample) * len);
+ _silent = src.silent();
}
/** Accumulate (add)@a len frames FROM THE START OF @a src into self at @a offset */
- void accumulate_from(const AudioBuffer& src, jack_nframes_t len, jack_nframes_t offset)
+ void accumulate_from(const AudioBuffer& src, nframes_t len, nframes_t offset)
{
assert(_capacity > 0);
assert(offset + len <= _capacity);
Sample* const dst_raw = _data + offset;
- const Sample* const src_raw = src.data(len);
+ const Sample* const src_raw = src.data();
- for (jack_nframes_t n = 0; n < len; ++n) {
+ for (nframes_t n = 0; n < len; ++n) {
dst_raw[n] += src_raw[n];
}
+
+ _silent = (src.silent() && _silent);
}
/** Accumulate (add) @a len frames FROM THE START OF @a src into self at @a offset
* scaling by @a gain_coeff */
- void accumulate_with_gain_from(const AudioBuffer& src, jack_nframes_t len, jack_nframes_t offset, gain_t gain_coeff)
+ void accumulate_with_gain_from(const AudioBuffer& src, nframes_t len, nframes_t offset, gain_t gain_coeff)
{
assert(_capacity > 0);
assert(offset + len <= _capacity);
Sample* const dst_raw = _data + offset;
- const Sample* const src_raw = src.data(len);
+ const Sample* const src_raw = src.data();
- for (jack_nframes_t n = 0; n < len; ++n) {
- dst_raw[n] += src_raw[n] * gain_coeff;
- }
+ mix_buffers_with_gain (dst_raw, src_raw, len, gain_coeff);
+
+ _silent = ( (src.silent() && _silent) || (_silent && gain_coeff == 0) );
}
- void apply_gain(gain_t gain, jack_nframes_t len, jack_nframes_t offset=0) {
- Sample* const buf = _data + offset;
-
- for (jack_nframes_t n = 0; n < len; ++n) {
- buf[n] *= gain;
- }
+ void apply_gain(gain_t gain, nframes_t len, nframes_t offset=0) {
+ apply_gain_to_buffer (_data + offset, len, gain);
}
/** Set the data contained by this buffer manually (for setting directly to jack buffer).
_capacity = size;
_size = size;
_data = data;
+ _silent = false;
}
- const Sample* data(jack_nframes_t nframes, jack_nframes_t offset=0) const
+ const Sample* data () const { return _data; }
+ Sample* data () { return _data; }
+
+ const Sample* data(nframes_t nframes, nframes_t offset) const
{ assert(offset + nframes <= _capacity); return _data + offset; }
- Sample* data(jack_nframes_t nframes, jack_nframes_t offset=0)
+ Sample* data (nframes_t nframes, nframes_t offset)
{ assert(offset + nframes <= _capacity); return _data + offset; }
private:
~MidiBuffer();
- // FIXME: clear events starting at offset in time
- void silence(jack_nframes_t len, jack_nframes_t offset=0) { assert(offset == 0); _size = 0; }
+ void silence(nframes_t dur, nframes_t offset=0);
+
+ void read_from(const Buffer& src, nframes_t nframes, nframes_t offset);
+
+ bool push_back(const MidiEvent& event);
- void read_from(const Buffer& src, jack_nframes_t nframes, jack_nframes_t offset);
+ const MidiEvent& operator[](size_t i) const { assert(i < _size); return _events[i]; }
+ MidiEvent& operator[](size_t i) { assert(i < _size); return _events[i]; }
- void set_size(size_t size) { _size = size; }
+ static size_t max_event_size() { return MAX_EVENT_SIZE; }
- const RawMidi* data() const { return _data; }
- RawMidi* data() { return _data; }
+ //void set_size(size_t size) { _size = size; }
+
+ //const RawMidi* data() const { return _data; }
+ //RawMidi* data() { return _data; }
private:
// These are undefined (prevent copies)
MidiBuffer(const MidiBuffer& copy);
MidiBuffer& operator=(const MidiBuffer& copy);
- bool _owns_data;
- RawMidi* _data; ///< Actual buffer contents
+ // FIXME: Jack needs to tell us this
+ static const size_t MAX_EVENT_SIZE = 4; // bytes
+
+ /* We use _size as "number of events", so the size of _data is
+ * (_size * MAX_EVENT_SIZE)
+ */
+
+ MidiEvent* _events; ///< Event structs that point to offsets in _data
+ RawMidi* _data; ///< MIDI, straight up. No time stamps.
};
} // namespace ARDOUR