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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* drumkitloader.cc
*
* Thu Jan 17 20:54:14 CET 2013
* Copyright 2013 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo 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.
*
* DrumGizmo 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 DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "drumkitloader.h"
#include <hugin.hpp>
#include "drumkitparser.h"
#include "drumgizmo.h"
DrumKitLoader::DrumKitLoader()
: semaphore("drumkitloader")
, framesize(0)
{
run();
run_semaphore.wait(); // Wait for the thread to actually start.
}
DrumKitLoader::~DrumKitLoader()
{
DEBUG(loader, "~DrumKitLoader() pre\n");
if(running) {
stop();
}
DEBUG(loader, "~DrumKitLoader() post\n");
}
void DrumKitLoader::stop()
{
{
MutexAutolock l(mutex);
load_queue.clear();
}
running = false;
semaphore.post();
wait_stop();
}
void DrumKitLoader::skip()
{
MutexAutolock l(mutex);
load_queue.clear();
}
void DrumKitLoader::setFrameSize(size_t framesize)
{
MutexAutolock l(mutex);
this->framesize = framesize;
framesize_semaphore.post(); // Signal that the framesize has been set.
}
bool DrumKitLoader::isDone()
{
MutexAutolock l(mutex);
return load_queue.size() == 0;
}
void DrumKitLoader::loadKit(DrumKit *kit)
{
MutexAutolock l(mutex);
DEBUG(loader, "Create AudioFile queue from DrumKit\n");
total_num_audiofiles = 0;// For UI Progress Messages
{ // Count total number of files that need loading:
Instruments::iterator i = kit->instruments.begin();
while(i != kit->instruments.end()) {
Instrument *instr = *i;
total_num_audiofiles += instr->audiofiles.size();
i++;
}
}
fraction = total_num_audiofiles / 200;
if(fraction == 0) fraction = 1;
{ // Now actually queue them for loading:
Instruments::iterator i = kit->instruments.begin();
while(i != kit->instruments.end()) {
Instrument *instr = *i;
std::vector<AudioFile*>::iterator af = instr->audiofiles.begin();
while(af != instr->audiofiles.end()) {
AudioFile *audiofile = *af;
load_queue.push_back(audiofile);
af++;
}
i++;
}
}
loaded = 0; // For UI Progress Messages
DEBUG(loader, "Queued %d (size: %d) AudioFiles for loading.\n",
(int)total_num_audiofiles, (int)load_queue.size());
semaphore.post(); // Start loader loop.
}
void DrumKitLoader::thread_main()
{
running = true;
run_semaphore.post(); // Signal that the thread has been started.
framesize_semaphore.wait(); // Wait until the framesize has been set.
while(running) {
size_t size;
{
MutexAutolock l(mutex);
size = load_queue.size();
}
// Only sleep if queue is empty.
if(size == 0) semaphore.wait();
std::string filename;
{
MutexAutolock l(mutex);
if(load_queue.size() == 0) continue;
AudioFile *audiofile = load_queue.front();
load_queue.pop_front();
filename = audiofile->filename;
size_t preload_size = framesize * CHUNK_MULTIPLIER + framesize;
if(preload_size < 1024)
{
preload_size = 1024;
}
audiofile->load(preload_size);
}
loaded++;
if(loaded % fraction == 0 || loaded == total_num_audiofiles) {
LoadStatusMessage *ls = new LoadStatusMessage();
ls->number_of_files = total_num_audiofiles;
ls->numer_of_files_loaded = loaded;
ls->current_file = filename;
msghandler.sendMessage(MSGRCV_UI, ls);
}
}
DEBUG(loader, "Loader thread finished.");
}
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