Work on generic LV2 events.

git-svn-id: http://svn.drobilla.net/lad/ingen@1090 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 0 insertions, 279 deletions

diff --git a/src/libs/engine/MidiBuffer.cpp b/src/libs/engine/MidiBuffer.cpp
deleted file mode 100644
index 929ac840..00000000
--- a/src/libs/engine/MidiBuffer.cpp
+++ /dev/null
@@ -1,279 +0,0 @@
-/* This file is part of Ingen.
- * Copyright (C) 2007 Dave Robillard <http://drobilla.net>
- * 
- * Ingen is free software; you can redistribute it and/or modify it under the
- * terms of the GNU General Public License as published by the Free Software
- * Foundation; either version 2 of the License, or (at your option) any later
- * version.
- * 
- * Ingen is distributed in the hope that it will be useful, but WITHOUT ANY
- * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
- * 
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#define __STDC_LIMIT_MACROS 1
-#include <stdint.h>
-#include <iostream>
-#include "MidiBuffer.hpp"
-
-using namespace std;
-
-namespace Ingen {
-
-
-/** Allocate a new MIDI buffer.
- * \a capacity is in bytes (not number of events).
- */
-MidiBuffer::MidiBuffer(size_t capacity)
-	: Buffer(DataType(DataType::MIDI), capacity)
-	, _latest_stamp(0)
-{
-	if (capacity > UINT32_MAX) {
-		cerr << "MIDI buffer size " << capacity << " too large, aborting." << endl;
-		throw std::bad_alloc();
-	}
-
-	int ret = posix_memalign((void**)&_local_buf, 16, sizeof(LV2_MIDI));
-	if (ret) {
-		cerr << "Failed to allocate MIDI buffer.  Aborting." << endl;
-		exit(EXIT_FAILURE);
-	}
-	
-	ret = posix_memalign((void**)&_local_buf->data, 16, capacity);
-	if (ret) {
-		cerr << "Failed to allocate MIDI buffer contents.  Aborting." << endl;
-		exit(EXIT_FAILURE);
-	}
-	
-	_local_buf->capacity = (uint32_t)capacity;
-	_buf = _local_buf;
-	reset(0);
-
-	//cerr << "Creating MIDI Buffer " << _buf << ", capacity = " << _buf->capacity << endl;
-}
-
-MidiBuffer::~MidiBuffer()
-{
-	free(_local_buf->data);
-	free(_local_buf);
-}
-
-
-/** Use another buffer's data instead of the local one.
- *
- * This buffer will essentially be identical to @a buf after this call.
- */
-bool
-MidiBuffer::join(Buffer* buf)
-{
-	MidiBuffer* mbuf = dynamic_cast<MidiBuffer*>(buf);
-	if (mbuf) {
-		_position = mbuf->_position;
-		_buf = mbuf->local_data();
-		_joined_buf = mbuf;
-		return false;
-	} else {
-		return false;
-	}
-
-	//assert(mbuf->size() == _size);
-	
-	_joined_buf = mbuf;
-
-	return true;
-}
-
-	
-void
-MidiBuffer::unjoin()
-{
-	_joined_buf = NULL;
-	_buf = _local_buf;
-	reset(_this_nframes);
-}
-
-
-void
-MidiBuffer::prepare_read(SampleCount nframes)
-{
-	//cerr << "\t" << this << " prepare_read: " << event_count() << endl;
-
-	rewind();
-	_this_nframes = nframes;
-}
-
-
-void
-MidiBuffer::prepare_write(SampleCount nframes)
-{
-	//cerr << "\t" << this << " prepare_write: " << event_count() << endl;
-	reset(nframes);
-}
-	
-/** FIXME: parameters ignored */
-void
-MidiBuffer::copy(const Buffer* src_buf, size_t start_sample, size_t end_sample)
-{
-	MidiBuffer* src = (MidiBuffer*)src_buf;
-	clear();
-	src->rewind();
-	const uint32_t frame_count = min(_this_nframes, src->this_nframes());
-	double time;
-	uint32_t size;
-	unsigned char* data;
-	while (src->increment() < frame_count) {
-		src->get_event(&time, &size, &data);
-		assert(data[0] >= 0x80);
-		append(time, size, data);
-	}
-}
-
-/** Increment the read position by one event.
- *
- * Returns the timestamp of the now current event, or this_nframes if
- * there are no events left.
- */
-double
-MidiBuffer::increment() const
-{
-	if (_position + sizeof(double) + sizeof(uint32_t) >= _buf->size) {
-		_position = _buf->size;
-		return _this_nframes; // hit end
-	}
-
-	_position += sizeof(double) + sizeof(uint32_t) +
-		*(uint32_t*)(_buf->data + _position + sizeof(double));
-
-	if (_position >= _buf->size) {
-		_position = _buf->size;
-		return _this_nframes;
-	} else {
-		return *(double*)(_buf->data + _position);
-	}
-}
-
-
-/** Append a MIDI event to the buffer.
- *
- * \a timestamp must be >= the latest event in the buffer,
- * and < this_nframes()
- *
- * \return true on success
- */
-bool
-MidiBuffer::append(double               timestamp,
-                   uint32_t             size,
-                   const unsigned char* data)
-{
-	/*cerr << "Append midi " << size << " bytes @ " << timestamp << ":" << endl;
-	for (uint32_t i=0; i < size; ++i) {
-		fprintf(stderr, "( %X )", *((uint8_t*)data + i));
-	}*/
-
-	if (_buf->capacity - _buf->size < sizeof(double) + sizeof(uint32_t) + size)
-		return false;
-	
-	assert(size > 0);
-	assert(data[0] >= 0x80);
-	assert(timestamp >= _latest_stamp);
-
-	*(double*)(_buf->data + _buf->size) = timestamp;
-	_buf->size += sizeof(double);
-	*(uint32_t*)(_buf->data + _buf->size) = size;
-	_buf->size += sizeof(uint32_t);
-	memcpy(_buf->data + _buf->size, data, size);
-	_buf->size += size;
-
-	++_buf->event_count;
-	_latest_stamp = timestamp;
-
-	return true;
-}
-
-
-/** Read an event from the current position in the buffer
- * 
- * \return the timestamp for the read event, or this_nframes()
- * if there are no more events in the buffer.
- */
-double
-MidiBuffer::get_event(double*         timestamp, 
-                      uint32_t*       size, 
-                      unsigned char** data) const
-{
-	const LV2_MIDI* buf = this->data();
-
-	if (_position >= buf->size) {
-		_position = buf->size;
-		*timestamp = _this_nframes;
-		*size = 0;
-		*data = NULL;
-		return _this_nframes;
-	}
-
-	*timestamp = *(double*)(buf->data + _position);
-	*size = *(uint32_t*)(buf->data + _position + sizeof(double));
-	*data = buf->data + _position + sizeof(double) + sizeof(uint32_t);
-
-	return *timestamp;
-}
-
-
-/** Clear, and merge \a a and \a b into this buffer.
- *
- * FIXME: This is slow.
- *
- * \return true if complete merge was successful
- */
-bool
-MidiBuffer::merge(const MidiBuffer& a, const MidiBuffer& b)
-{
-	// Die if a merge isn't necessary as it's expensive
-	assert(a.size() > 0 && b.size() > 0);
-
-	reset(_this_nframes);
-
-	a.rewind();
-	b.rewind();
-
-	double         a_time;
-	uint32_t       a_size;
-	unsigned char* a_data;
-	
-	double         b_time;
-	uint32_t       b_size;
-	unsigned char* b_data;
-
-	a.get_event(&a_time, &a_size, &a_data);
-	b.get_event(&b_time, &b_size, &b_data);
-
-	while (true) {
-		if (a_data && (!b_data || (a_time < b_time))) {
-			append(a_time, a_size, a_data);
-			if (a.increment())
-				a.get_event(&a_time, &a_size, &a_data);
-			else
-				a_data = NULL;
-		} else if (b_data) {
-			append(b_time, b_size, b_data);
-			if (b.increment())
-				b.get_event(&b_time, &b_size, &b_data);
-			else
-				b_data = NULL;
-		} else {
-			break;
-		}
-	}
-
-	_latest_stamp = max(a_time, b_time);
-
-	return true;
-}
-
-
-} // namespace Ingen
-