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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "BitmapManager.h"
#include "IBitmapLoadedListener.h"
#ifdef WIN32
#include <io.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include "../base/OSHelper.h"
using namespace std;
namespace avg {
BitmapManager * BitmapManager::s_pBitmapManager=0;
BitmapManager::BitmapManager()
{
if (s_pBitmapManager) {
throw Exception(AVG_ERR_UNKNOWN, "BitmapMananger has already been instantiated.");
}
m_pCmdQueue = BitmapManagerThread::CQueuePtr(new BitmapManagerThread::CQueue);
m_pMsgQueue = BitmapManagerMsgQueuePtr(new BitmapManagerMsgQueue(8));
startThreads(1);
s_pBitmapManager = this;
}
BitmapManager::~BitmapManager()
{
while (!m_pCmdQueue->empty()) {
m_pCmdQueue->pop();
}
while (!m_pMsgQueue->empty()) {
m_pMsgQueue->pop();
}
stopThreads();
s_pBitmapManager = 0;
}
BitmapManager* BitmapManager::get()
{
if (!s_pBitmapManager) {
s_pBitmapManager = new BitmapManager();
}
return s_pBitmapManager;
}
void BitmapManager::loadBitmapPy(const UTF8String& sUtf8FileName,
const boost::python::object& pyFunc, PixelFormat pf)
{
std::string sFileName = convertUTF8ToFilename(sUtf8FileName);
BitmapManagerMsgPtr pMsg = BitmapManagerMsgPtr(
new BitmapManagerMsg(sUtf8FileName, pyFunc, pf));
internalLoadBitmap(pMsg);
}
void BitmapManager::loadBitmap(const UTF8String& sUtf8FileName,
IBitmapLoadedListener* pLoadedListener, PixelFormat pf)
{
std::string sFileName = convertUTF8ToFilename(sUtf8FileName);
BitmapManagerMsgPtr pMsg = BitmapManagerMsgPtr(
new BitmapManagerMsg(sUtf8FileName, pLoadedListener, pf));
internalLoadBitmap(pMsg);
}
void BitmapManager::setNumThreads(int numThreads)
{
stopThreads();
startThreads(numThreads);
}
void BitmapManager::onFrameEnd()
{
while (!m_pMsgQueue->empty()) {
BitmapManagerMsgPtr pMsg = m_pMsgQueue->pop();
pMsg->executeCallback();
}
}
void BitmapManager::internalLoadBitmap(BitmapManagerMsgPtr pMsg)
{
#ifdef WIN32
int rc = _access(pMsg->getFilename().c_str(), 04);
#else
int rc = access(pMsg->getFilename().c_str(), R_OK);
#endif
if (rc != 0) {
pMsg->setError(Exception(AVG_ERR_FILEIO,
std::string("BitmapManager can't open output file '") +
pMsg->getFilename() + "'. Reason: " +
strerror(errno)));
m_pMsgQueue->push(pMsg);
} else {
m_pCmdQueue->pushCmd(boost::bind(&BitmapManagerThread::loadBitmap, _1, pMsg));
}
}
void BitmapManager::startThreads(int numThreads)
{
for (int i=0; i<numThreads; ++i) {
boost::thread* pThread = new boost::thread(
BitmapManagerThread(*m_pCmdQueue, *m_pMsgQueue));
m_pBitmapManagerThreads.push_back(pThread);
}
}
void BitmapManager::stopThreads()
{
int numThreads = m_pBitmapManagerThreads.size();
for (int i=0; i<numThreads; ++i) {
m_pCmdQueue->pushCmd(boost::bind(&BitmapManagerThread::stop, _1));
}
for (int i=0; i<numThreads; ++i) {
boost::thread* pThread = m_pBitmapManagerThreads[i];
pThread->join();
delete pThread;
}
m_pBitmapManagerThreads.clear();
}
}
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