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/**
* @file llimageworker.cpp
* @brief Base class for images.
*
* $LicenseInfo:firstyear=2001&license=viewergpl$
*
* Copyright (c) 2001-2010, Linden Research, Inc.
*
* Second Life Viewer Source Code
* The source code in this file ("Source Code") is provided by Linden Lab
* to you under the terms of the GNU General Public License, version 2.0
* ("GPL"), unless you have obtained a separate licensing agreement
* ("Other License"), formally executed by you and Linden Lab. Terms of
* the GPL can be found in doc/GPL-license.txt in this distribution, or
* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
*
* There are special exceptions to the terms and conditions of the GPL as
* it is applied to this Source Code. View the full text of the exception
* in the file doc/FLOSS-exception.txt in this software distribution, or
* online at
* http://secondlifegrid.net/programs/open_source/licensing/flossexception
*
* By copying, modifying or distributing this software, you acknowledge
* that you have read and understood your obligations described above,
* and agree to abide by those obligations.
*
* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
* COMPLETENESS OR PERFORMANCE.
* $/LicenseInfo$
*/
#include "linden_common.h"
#include "llimageworker.h"
#include "llimagedxt.h"
//----------------------------------------------------------------------------
// MAIN THREAD
LLImageDecodeThread::LLImageDecodeThread(bool threaded)
: LLQueuedThread("imagedecode", threaded)
{
mCreationMutex = new LLMutex(getAPRPool());
}
// MAIN THREAD
// virtual
S32 LLImageDecodeThread::update(U32 max_time_ms)
{
LLMutexLock lock(mCreationMutex);
for (creation_list_t::iterator iter = mCreationList.begin();
iter != mCreationList.end(); ++iter)
{
creation_info& info = *iter;
ImageRequest* req = new ImageRequest(info.handle, info.image,
info.priority, info.discard, info.needs_aux,
info.responder);
bool res = addRequest(req);
if (!res)
{
llerrs << "request added after LLLFSThread::cleanupClass()" << llendl;
}
}
mCreationList.clear();
S32 res = LLQueuedThread::update(max_time_ms);
return res;
}
LLImageDecodeThread::handle_t LLImageDecodeThread::decodeImage(LLImageFormatted* image,
U32 priority, S32 discard, BOOL needs_aux, Responder* responder)
{
LLMutexLock lock(mCreationMutex);
handle_t handle = generateHandle();
mCreationList.push_back(creation_info(handle, image, priority, discard, needs_aux, responder));
return handle;
}
// Used by unit test only
// Returns the size of the mutex guarded list as an indication of sanity
S32 LLImageDecodeThread::tut_size()
{
LLMutexLock lock(mCreationMutex);
S32 res = mCreationList.size();
return res;
}
LLImageDecodeThread::Responder::~Responder()
{
}
//----------------------------------------------------------------------------
LLImageDecodeThread::ImageRequest::ImageRequest(handle_t handle, LLImageFormatted* image,
U32 priority, S32 discard, BOOL needs_aux,
LLImageDecodeThread::Responder* responder)
: LLQueuedThread::QueuedRequest(handle, priority, FLAG_AUTO_COMPLETE),
mFormattedImage(image),
mDiscardLevel(discard),
mNeedsAux(needs_aux),
mDecodedRaw(FALSE),
mDecodedAux(FALSE),
mResponder(responder)
{
}
LLImageDecodeThread::ImageRequest::~ImageRequest()
{
mDecodedImageRaw = NULL;
mDecodedImageAux = NULL;
mFormattedImage = NULL;
}
//----------------------------------------------------------------------------
// Returns true when done, whether or not decode was successful.
bool LLImageDecodeThread::ImageRequest::processRequest()
{
const F32 decode_time_slice = .1f;
bool done = true;
if (!mDecodedRaw && mFormattedImage.notNull())
{
// Decode primary channels
if (mDecodedImageRaw.isNull())
{
// parse formatted header
if (!mFormattedImage->updateData())
{
return true; // done (failed)
}
if (!(mFormattedImage->getWidth() * mFormattedImage->getHeight() * mFormattedImage->getComponents()))
{
return true; // done (failed)
}
if (mDiscardLevel >= 0)
{
mFormattedImage->setDiscardLevel(mDiscardLevel);
}
mDecodedImageRaw = new LLImageRaw(mFormattedImage->getWidth(),
mFormattedImage->getHeight(),
mFormattedImage->getComponents());
}
done = mFormattedImage->decode(mDecodedImageRaw, decode_time_slice); // 1ms
mDecodedRaw = done;
}
if (done && mNeedsAux && !mDecodedAux && mFormattedImage.notNull())
{
// Decode aux channel
if (!mDecodedImageAux)
{
mDecodedImageAux = new LLImageRaw(mFormattedImage->getWidth(),
mFormattedImage->getHeight(),
1);
}
done = mFormattedImage->decodeChannels(mDecodedImageAux, decode_time_slice, 4, 4); // 1ms
mDecodedAux = done;
}
return done;
}
void LLImageDecodeThread::ImageRequest::finishRequest(bool completed)
{
if (mResponder.notNull())
{
bool success = completed && mDecodedRaw && (!mNeedsAux || mDecodedAux);
mResponder->completed(success, mDecodedImageRaw, mDecodedImageAux);
}
// Will automatically be deleted
}
// Used by unit test only
// Checks that a responder exists for this instance so that something can happen when completion is reached
bool LLImageDecodeThread::ImageRequest::tut_isOK()
{
return mResponder.notNull();
}
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