first pass at internal sends. this is a very tentative work in progress, and it is...

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

diff --git a/libs/ardour/ardour/audio_buffer.h b/libs/ardour/ardour/audio_buffer.h
index 9a41e8e093f82ceb6de9dab2cd9aab6e05727421..829288a7afd0a1096c6fc1a613e212952c81eef3 100644 (file)
--- a/libs/ardour/ardour/audio_buffer.h
+++ b/libs/ardour/ardour/audio_buffer.h
@@ -68,9 +68,14 @@ public:
        /** 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, nframes_t len, nframes_t offset, gain_t gain_coeff) {
+
                assert(_capacity > 0);
                assert(offset + len <= _capacity);
 
+               if (src.silent()) {
+                       return;
+               }
+
                Sample*       const dst_raw = _data + offset;
                const Sample* const src_raw = src.data();
 
@@ -82,6 +87,7 @@ public:
        /** 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 Sample* src_raw, nframes_t len, nframes_t offset, gain_t gain_coeff) {
+
                assert(_capacity > 0);
                assert(offset + len <= _capacity);
 
@@ -123,7 +129,22 @@ public:
        Sample* data (nframes_t nframes, nframes_t offset)
                { assert(offset + nframes <= _capacity); return _data + offset; }
 
-private:
+       void replace_data (size_t nframes);
+
+       void drop_data () {
+               assert (_owns_data);
+               assert (_data);
+
+               free (_data);
+               _data = 0;
+               _size = 0;
+               _capacity = 0;
+               _silent = false;
+       }
+
+       void copy_to_internal (Sample* p, nframes_t cnt, nframes_t offset);
+
+  private:
        bool    _owns_data;
        Sample* _data; ///< Actual buffer contents
 };