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Diffstat (limited to 'libs/ardour/lv2_event_buffer.cc')
| -rw-r--r-- | libs/ardour/lv2_event_buffer.cc | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/libs/ardour/lv2_event_buffer.cc b/libs/ardour/lv2_event_buffer.cc deleted file mode 100644 index f1e5e4d0d1..0000000000 --- a/libs/ardour/lv2_event_buffer.cc +++ /dev/null @@ -1,196 +0,0 @@ -/* - Copyright (C) 2009 Paul Davis - Author: David Robillard - - This program 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. - - This program 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 more 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., - 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include <stdint.h> -#include <iostream> -#include "lv2/lv2plug.in/ns/ext/event/event.h" -#include "lv2/lv2plug.in/ns/ext/event/event-helpers.h" -#include "ardour/lv2_event_buffer.h" - -using namespace std; - -namespace ARDOUR { - - -/** Allocate a new event buffer. - * \a capacity is in bytes (not number of events). - */ -LV2EventBuffer::LV2EventBuffer(size_t capacity) - : _latest_frames(0) - , _latest_subframes(0) -{ - if (capacity > UINT32_MAX) { - cerr << "Event buffer size " << capacity << " too large, aborting." << endl; - throw std::bad_alloc(); - } - - if (capacity == 0) { - cerr << "ERROR: LV2 event buffer of size 0 created." << endl; - capacity = 1024; - } - -#ifdef NO_POSIX_MEMALIGN - _data = (LV2_Event_Buffer*)malloc(sizeof(LV2_Event_Buffer) + capacity); - int ret = (_data != NULL) ? 0 : -1; -#else - int ret = posix_memalign((void**)&_data, 16, sizeof(LV2_Event_Buffer) + capacity); -#endif - - if (ret != 0) { - cerr << "Failed to allocate event buffer. Aborting." << endl; - exit(EXIT_FAILURE); - } - - _data->event_count = 0; - _data->capacity = (uint32_t)capacity; - _data->size = 0; - _data->data = reinterpret_cast<uint8_t*>(_data + 1); - - reset(); -} - - -LV2EventBuffer::~LV2EventBuffer() -{ - free(_data); -} - - -/** Increment the read position by one event. - * - * \return true if increment was successful, or false if end of buffer reached. - */ -bool -LV2EventBuffer::increment() const -{ - if (lv2_event_is_valid(&_iter)) { - lv2_event_increment(&_iter); - return true; - } else { - return false; - } -} - - -/** \return true iff the cursor is valid (ie get_event is safe) - */ -bool -LV2EventBuffer::is_valid() const -{ - return lv2_event_is_valid(&_iter); -} - - -/** Read an event from the current position in the buffer - * - * \return true if read was successful, or false if end of buffer reached - */ -bool -LV2EventBuffer::get_event(uint32_t* frames, - uint32_t* subframes, - uint16_t* type, - uint16_t* size, - uint8_t** data) const -{ - if (lv2_event_is_valid(&_iter)) { - LV2_Event* ev = lv2_event_get(&_iter, data); - *frames = ev->frames; - *subframes = ev->subframes; - *type = ev->type; - *size = ev->size; - return true; - } else { - return false; - } -} - - -/** Append an event to the buffer. - * - * \a timestamp must be >= the latest event in the buffer. - * - * \return true on success - */ -bool -LV2EventBuffer::append(uint32_t frames, - uint32_t subframes, - uint16_t type, - uint16_t size, - const uint8_t* data) -{ -#ifndef NDEBUG - if (lv2_event_is_valid(&_iter)) { - LV2_Event* last_event = lv2_event_get(&_iter, NULL); - assert(last_event->frames < frames - || (last_event->frames == frames && last_event->subframes <= subframes)); - } -#endif - - /*cout << "Appending event type " << type << ", size " << size - << " @ " << frames << "." << subframes << endl; - cout << "Buffer capacity " << _data->capacity << ", size " << _data->size << endl;*/ - - if (!lv2_event_write(&_iter, frames, subframes, type, size, data)) { - cerr << "ERROR: Failed to write event." << endl; - return false; - } else { - _latest_frames = frames; - _latest_subframes = subframes; - return true; - } -} - - -/** Append a buffer of events to the buffer. - * - * \a timestamp must be >= the latest event in the buffer. - * - * \return true on success - */ -bool -LV2EventBuffer::append(const LV2_Event_Buffer* /*buf*/) -{ - uint8_t** data = NULL; - bool ret = true; - - LV2_Event_Iterator iter; - for (lv2_event_begin(&iter, _data); lv2_event_is_valid(&iter); lv2_event_increment(&iter)) { - LV2_Event* ev = lv2_event_get(&iter, data); - -#ifndef NDEBUG - assert((ev->frames > _latest_frames) - || (ev->frames == _latest_frames - && ev->subframes >= _latest_subframes)); -#endif - - if (!(ret = append(ev->frames, ev->subframes, ev->type, ev->size, *data))) { - cerr << "ERROR: Failed to write event." << endl; - break; - } - - _latest_frames = ev->frames; - _latest_subframes = ev->subframes; - } - - return ret; -} - - -} // namespace ARDOUR - |