diff options
author | David Robillard <d@drobilla.net> | 2006-08-12 08:20:24 +0000 |
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committer | David Robillard <d@drobilla.net> | 2006-08-12 08:20:24 +0000 |
commit | 30ab1fd61569f9d7fb7410d483fa68cbf9865c37 (patch) | |
tree | 60cf9b5228a2728cda6608d517528066253d1a17 /libs/ardour/ardour/buffer.h | |
parent | cbdf686e391bc2e7b93f37a5d3fa9197cb178078 (diff) |
Towards MIDI:
- Converted vector<Sample*> to BufferList and numerous counts from int to ChanCount (and related changes)
- Added fancy type-generic iterators to BufferList, PortIterator (see IO::collect_input for a good example of the idea - the same code will work to read all input (of various types in a single IO, eg instruments) without modification no matter how many types we add)
- Fixed comparison operator bugs with ChanCount (screwed up metering among other things)
- Moved peak metering into it's own object, and moved most of the pan related code out of IO to panner (still a touch more to be done here for MIDI playback)
Not directly MIDI related fixes for problems in trunk:
- Fixed varispeed gain/pan automation to work properly (was reading the wrong range of automation data, probably causing nasty clicks?)
- Fixed crash on varispeed looping (possibly only a 64-bit problem). It still doesn't work, but at least it doesn't die
Quite a few things broken, and the new classes are pretty filthy still, but I think the direction is a lot better than all my previous plans...
git-svn-id: svn://localhost/ardour2/branches/midi@795 d708f5d6-7413-0410-9779-e7cbd77b26cf
Diffstat (limited to 'libs/ardour/ardour/buffer.h')
-rw-r--r-- | libs/ardour/ardour/buffer.h | 57 |
1 files changed, 44 insertions, 13 deletions
diff --git a/libs/ardour/ardour/buffer.h b/libs/ardour/ardour/buffer.h index 981d941de7..accdd9c181 100644 --- a/libs/ardour/ardour/buffer.h +++ b/libs/ardour/ardour/buffer.h @@ -57,9 +57,12 @@ public: DataType type() const { return _type; } /** Clear (eg zero, or empty) buffer starting at TIME @a offset */ - virtual void clear(jack_nframes_t offset = 0) = 0; + virtual void silence(jack_nframes_t len, jack_nframes_t offset=0) = 0; - virtual void write(const Buffer& src, jack_nframes_t offset, jack_nframes_t len) = 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; protected: Buffer(DataType type, size_t capacity) @@ -88,23 +91,51 @@ public: ~AudioBuffer(); - void clear(jack_nframes_t offset=0) { memset(_data + offset, 0, sizeof (Sample) * _capacity); } - - /** Copy @a len frames starting at @a offset, from the start of @a src */ - void write(const Buffer& src, jack_nframes_t offset, jack_nframes_t len) + void silence(jack_nframes_t len, jack_nframes_t offset=0) { + assert(_capacity > 0); + assert(offset + len <= _capacity); + memset(_data + offset, 0, sizeof (Sample) * len); + } + + /** 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) + { + assert(_capacity > 0); assert(src.type() == _type == DataType::AUDIO); assert(offset + len <= _capacity); - memcpy(_data + offset, ((AudioBuffer&)src).data(len, offset), sizeof(Sample) * len); + memcpy(_data + offset, ((AudioBuffer&)src).data(len), sizeof(Sample) * len); } - /** Copy @a len frames starting at @a offset, from the start of @a src */ - void write(const Sample* src, jack_nframes_t offset, jack_nframes_t len) + /** 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) { + assert(_capacity > 0); assert(offset + len <= _capacity); - memcpy(_data + offset, src, sizeof(Sample) * len); + + Sample* const dst_raw = _data + offset; + const Sample* const src_raw = src.data(len); + + for (jack_nframes_t n = 0; n < len; ++n) { + dst_raw[n] += src_raw[n]; + } } + + /** 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) + { + assert(_capacity > 0); + assert(offset + len <= _capacity); + Sample* const dst_raw = _data + offset; + const Sample* const src_raw = src.data(len); + + for (jack_nframes_t n = 0; n < len; ++n) { + dst_raw[n] += src_raw[n] * gain_coeff; + } + } + /** Set the data contained by this buffer manually (for setting directly to jack buffer). * * Constructor MUST have been passed capacity=0 or this will die (to prevent mem leaks). @@ -142,10 +173,10 @@ public: ~MidiBuffer(); - // FIXME: clear events starting at offset - void clear(jack_nframes_t offset=0) { assert(offset == 0); _size = 0; } + // 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 write(const Buffer& src, jack_nframes_t offset, jack_nframes_t nframes); + void read_from(const Buffer& src, jack_nframes_t nframes, jack_nframes_t offset); void set_size(size_t size) { _size = size; } |