Use PBD::copy_file in Session::create() to copy the template file.

[ardour.git] / libs / ardour / ardour / buffer.h

diff --git a/libs/ardour/ardour/buffer.h b/libs/ardour/ardour/buffer.h
index 896d6e7616d2732d29912ea149d50a9ec6b1896c..b890afbb03dcf5f5a9e5c618cc0fc082f9f39488 100644 (file)
--- a/libs/ardour/ardour/buffer.h
+++ b/libs/ardour/ardour/buffer.h
@@ -24,6 +24,7 @@
 #include <iostream>
 #include <ardour/types.h>
 #include <ardour/data_type.h>
+#include <ardour/runtime_functions.h>
 
 namespace ARDOUR {
 
@@ -56,22 +57,25 @@ public:
         * 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)
@@ -91,57 +95,61 @@ public:
        
        ~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).
@@ -154,12 +162,16 @@ public:
                _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:
@@ -181,9 +193,9 @@ public:
        
        ~MidiBuffer();
 
-       void silence(jack_nframes_t dur, jack_nframes_t offset=0);
+       void silence(nframes_t dur, nframes_t offset=0);
        
-       void read_from(const Buffer& src, jack_nframes_t nframes, jack_nframes_t offset);
+       void read_from(const Buffer& src, nframes_t nframes, nframes_t offset);
 
        bool push_back(const MidiEvent& event);