diff options
Diffstat (limited to 'src/plugins/platforms/xcb/qxcbsharedbuffermanager.cpp')
| -rw-r--r-- | src/plugins/platforms/xcb/qxcbsharedbuffermanager.cpp | 640 |
1 files changed, 0 insertions, 640 deletions
diff --git a/src/plugins/platforms/xcb/qxcbsharedbuffermanager.cpp b/src/plugins/platforms/xcb/qxcbsharedbuffermanager.cpp deleted file mode 100644 index 8bd3aea259..0000000000 --- a/src/plugins/platforms/xcb/qxcbsharedbuffermanager.cpp +++ /dev/null @@ -1,640 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). -** Contact: http://www.qt-project.org/ -** -** This file is part of the plugins of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** GNU Lesser General Public License Usage -** This file may be used under the terms of the GNU Lesser General Public -** License version 2.1 as published by the Free Software Foundation and -** appearing in the file LICENSE.LGPL included in the packaging of this -** file. Please review the following information to ensure the GNU Lesser -** General Public License version 2.1 requirements will be met: -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -** -** In addition, as a special exception, Nokia gives you certain additional -** rights. These rights are described in the Nokia Qt LGPL Exception -** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU General -** Public License version 3.0 as published by the Free Software Foundation -** and appearing in the file LICENSE.GPL included in the packaging of this -** file. Please review the following information to ensure the GNU General -** Public License version 3.0 requirements will be met: -** http://www.gnu.org/copyleft/gpl.html. -** -** Other Usage -** Alternatively, this file may be used in accordance with the terms and -** conditions contained in a signed written agreement between you and Nokia. -** -** -** -** -** -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#if defined(QT_USE_XCB_SHARED_GRAPHICS_CACHE) - -#include "qxcbsharedbuffermanager.h" - -#include <QtCore/quuid.h> -#include <QtGui/qimage.h> - -#include <stdio.h> - -#if !defined(SHAREDGRAPHICSCACHE_MAX_MEMORY_USED) -# define SHAREDGRAPHICSCACHE_MAX_MEMORY_USED 16 * 1024 * 1024 // 16 MB limit -#endif - -#if !defined(SHAREDGRAPHICSCACHE_MAX_TEXTURES_PER_CACHE) -# define SHAREDGRAPHICSCACHE_MAX_TEXTURES_PER_CACHE 1 -#endif - -#if !defined(SHAREDGRAPHICSCACHE_TEXTURE_SIZE) -# define SHAREDGRAPHICSCACHE_TEXTURE_SIZE 2048 -#endif - -#define SHAREDBUFFERMANAGER_DEBUG 1 - -QT_BEGIN_NAMESPACE - -QXcbSharedBufferManager::QXcbSharedBufferManager() - : m_memoryUsed(0) - , m_mostRecentlyUsed(0) - , m_leastRecentlyUsed(0) -{ -} - -QXcbSharedBufferManager::~QXcbSharedBufferManager() -{ - { - QHash<QByteArray, Buffer *>::const_iterator it = m_buffers.constBegin(); - while (it != m_buffers.constEnd()) { - Buffer *buffer = it.value(); - delete buffer; - ++it; - } - } - - { - QHash<QByteArray, Items *>::const_iterator it = m_items.constBegin(); - while (it != m_items.constEnd()) { - Items *items = it.value(); - QHash<quint32, Item *>::const_iterator itemIt = items->items.constBegin(); - while (itemIt != items->items.constEnd()) { - delete itemIt.value(); - ++itemIt; - } - delete it.value(); - ++it; - } - } -} - -void QXcbSharedBufferManager::getBufferForItem(const QByteArray &cacheId, quint32 itemId, - Buffer **buffer, int *x, int *y) const -{ - Q_ASSERT_X(m_currentCacheId.isEmpty(), Q_FUNC_INFO, - "Call endSharedBufferAction before accessing data"); - - Q_ASSERT(buffer != 0); - Q_ASSERT(x != 0); - Q_ASSERT(y != 0); - - Items *items = itemsForCache(cacheId); - Item *item = items->items.value(itemId); - if (item != 0) { - *buffer = item->buffer; - *x = item->x; - *y = item->y; - } else { - *buffer = 0; - *x = -1; - *y = -1; - } -} - -QPair<QByteArray, int> QXcbSharedBufferManager::serializeBuffer(QSharedMemory *buffer) const -{ - Q_ASSERT_X(m_currentCacheId.isEmpty(), Q_FUNC_INFO, - "Call endSharedBufferAction before accessing data"); - - return qMakePair(buffer->key().toLatin1(), 0); -} - -void QXcbSharedBufferManager::beginSharedBufferAction(const QByteArray &cacheId) -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::beginSharedBufferAction() called for %s", cacheId.constData()); -#endif - - Q_ASSERT(m_currentCacheId.isEmpty()); - Q_ASSERT(!cacheId.isEmpty()); - - m_pendingInvalidatedItems.clear(); - m_pendingReadyItems.clear(); - m_pendingMissingItems.clear(); - - m_currentCacheId = cacheId; -} - -void QXcbSharedBufferManager::requestItems(const QSet<quint32> &itemIds) -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::requestItems for %d items", itemIds.size()); -#endif - - Q_ASSERT_X(!m_currentCacheId.isEmpty(), Q_FUNC_INFO, - "Call beginSharedBufferAction before requesting items"); - Items *items = itemsForCache(m_currentCacheId); - - QSet<quint32>::const_iterator it = itemIds.constBegin(); - while (it != itemIds.constEnd()) { - if (items->items.contains(*it)) - m_pendingReadyItems[m_currentCacheId].insert(*it); - else - m_pendingMissingItems[m_currentCacheId].insert(*it); - ++it; - } -} - -void QXcbSharedBufferManager::releaseItems(const QSet<quint32> &itemIds) -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::releaseItems for %d items", itemIds.size()); -#endif - - Items *items = itemsForCache(m_currentCacheId); - - QSet<quint32>::const_iterator it; - for (it = itemIds.constBegin(); it != itemIds.constEnd(); ++it) { - Item *item = items->items.value(*it); - if (item != 0) - pushItemToBack(items, item); - - m_pendingReadyItems[m_currentCacheId].remove(*it); - m_pendingMissingItems[m_currentCacheId].remove(*it); - } -} - -void QXcbSharedBufferManager::insertItem(quint32 itemId, uchar *data, - int itemWidth, int itemHeight) -{ - Q_ASSERT_X(!m_currentCacheId.isEmpty(), Q_FUNC_INFO, - "Call beginSharedBufferAction before inserting items"); - Items *items = itemsForCache(m_currentCacheId); - - if (!items->items.contains(itemId)) { - Buffer *sharedBuffer = 0; - int x = 0; - int y = 0; - - findAvailableBuffer(itemWidth, itemHeight, &sharedBuffer, &x, &y); - copyIntoBuffer(sharedBuffer, x, y, itemWidth, itemHeight, data); - -// static int counter=0; -// QString fileName = QString::fromLatin1("buffer%1.png").arg(counter++); -// saveBuffer(sharedBuffer, fileName); - - Item *item = new Item; - item->itemId = itemId; - item->buffer = sharedBuffer; - item->x = x; - item->y = y; - - items->items[itemId] = item; - - touchItem(items, item); - } -} - -void QXcbSharedBufferManager::endSharedBufferAction() -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::endSharedBufferAction() called for %s", - m_currentCacheId.constData()); -#endif - - Q_ASSERT(!m_currentCacheId.isEmpty()); - - // Do an extra validation pass on the invalidated items since they may have been re-inserted - // after they were invalidated - if (m_pendingInvalidatedItems.contains(m_currentCacheId)) { - QSet<quint32> &invalidatedItems = m_pendingInvalidatedItems[m_currentCacheId]; - QSet<quint32>::iterator it = invalidatedItems.begin(); - while (it != invalidatedItems.end()) { - Items *items = m_items.value(m_currentCacheId); - - if (items->items.contains(*it)) { - m_pendingReadyItems[m_currentCacheId].insert(*it); - it = invalidatedItems.erase(it); - } else { - ++it; - } - } - } - - m_currentCacheId.clear(); -} - -void QXcbSharedBufferManager::pushItemToBack(Items *items, Item *item) -{ - if (items->leastRecentlyUsed == item) - return; - - if (item->next != 0) - item->next->prev = item->prev; - if (item->prev != 0) - item->prev->next = item->next; - - if (items->mostRecentlyUsed == item) - items->mostRecentlyUsed = item->prev; - - if (items->leastRecentlyUsed != 0) - items->leastRecentlyUsed->prev = item; - - item->prev = 0; - item->next = items->leastRecentlyUsed; - items->leastRecentlyUsed = item; - if (items->mostRecentlyUsed == 0) - items->mostRecentlyUsed = item; -} - -void QXcbSharedBufferManager::touchItem(Items *items, Item *item) -{ - if (items->mostRecentlyUsed == item) - return; - - if (item->next != 0) - item->next->prev = item->prev; - if (item->prev != 0) - item->prev->next = item->next; - - if (items->leastRecentlyUsed == item) - items->leastRecentlyUsed = item->next; - - if (items->mostRecentlyUsed != 0) - items->mostRecentlyUsed->next = item; - - item->next = 0; - item->prev = items->mostRecentlyUsed; - items->mostRecentlyUsed = item; - if (items->leastRecentlyUsed == 0) - items->leastRecentlyUsed = item; -} - -void QXcbSharedBufferManager::deleteItem(Items *items, Item *item) -{ - Q_ASSERT(items != 0); - Q_ASSERT(item != 0); - - if (items->mostRecentlyUsed == item) - items->mostRecentlyUsed = item->prev; - if (items->leastRecentlyUsed == item) - items->leastRecentlyUsed = item->next; - - if (item->next != 0) - item->next->prev = item->prev; - if (item->prev != 0) - item->prev->next = item->next; - - m_pendingInvalidatedItems[items->cacheId].insert(item->itemId); - - { - QHash<quint32, Item *>::iterator it = items->items.find(item->itemId); - while (it != items->items.end() && it.value()->itemId == item->itemId) - it = items->items.erase(it); - } - - delete item; -} - -void QXcbSharedBufferManager::recycleItem(Buffer **sharedBuffer, int *glyphX, int *glyphY) -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::recycleItem() called for %s", m_currentCacheId.constData()); -#endif - - Items *items = itemsForCache(m_currentCacheId); - - Item *recycledItem = items->leastRecentlyUsed; - Q_ASSERT(recycledItem != 0); - - *sharedBuffer = recycledItem->buffer; - *glyphX = recycledItem->x; - *glyphY = recycledItem->y; - - deleteItem(items, recycledItem); -} - -void QXcbSharedBufferManager::touchBuffer(Buffer *buffer) -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::touchBuffer() called for %s", buffer->cacheId.constData()); -#endif - - if (buffer == m_mostRecentlyUsed) - return; - - if (buffer->next != 0) - buffer->next->prev = buffer->prev; - if (buffer->prev != 0) - buffer->prev->next = buffer->next; - - if (m_leastRecentlyUsed == buffer) - m_leastRecentlyUsed = buffer->next; - - buffer->next = 0; - buffer->prev = m_mostRecentlyUsed; - if (m_mostRecentlyUsed != 0) - m_mostRecentlyUsed->next = buffer; - if (m_leastRecentlyUsed == 0) - m_leastRecentlyUsed = buffer; - m_mostRecentlyUsed = buffer; -} - -void QXcbSharedBufferManager::deleteLeastRecentlyUsed() -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::deleteLeastRecentlyUsed() called"); -#endif - - if (m_leastRecentlyUsed == 0) - return; - - Buffer *old = m_leastRecentlyUsed; - m_leastRecentlyUsed = old->next; - m_leastRecentlyUsed->prev = 0; - - QByteArray cacheId = old->cacheId; - Items *items = itemsForCache(cacheId); - - QHash<quint32, Item *>::iterator it = items->items.begin(); - while (it != items->items.end()) { - Item *item = it.value(); - if (item->buffer == old) { - deleteItem(items, item); - it = items->items.erase(it); - } else { - ++it; - } - } - - m_buffers.remove(cacheId, old); - m_memoryUsed -= old->width * old->height * old->bytesPerPixel; - -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::deleteLeastRecentlyUsed: Memory used: %d / %d (%6.2f %%)", - m_memoryUsed, SHAREDGRAPHICSCACHE_MAX_MEMORY_USED, - 100.0f * float(m_memoryUsed) / float(SHAREDGRAPHICSCACHE_MAX_MEMORY_USED)); -#endif - - delete old; -} - -QXcbSharedBufferManager::Buffer *QXcbSharedBufferManager::createNewBuffer(const QByteArray &cacheId, - int heightRequired) -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::createNewBuffer() called for %s", cacheId.constData()); -#endif - - // ### - // if (bufferCount of cacheId == SHAREDGRAPHICACHE_MAX_TEXTURES_PER_CACHE) - // deleteLeastRecentlyUsedBufferForCache(cacheId); - - // ### Take pixel format into account - while (m_memoryUsed + SHAREDGRAPHICSCACHE_TEXTURE_SIZE * heightRequired >= SHAREDGRAPHICSCACHE_MAX_MEMORY_USED) - deleteLeastRecentlyUsed(); - - Buffer *buffer = allocateBuffer(SHAREDGRAPHICSCACHE_TEXTURE_SIZE, heightRequired); - buffer->cacheId = cacheId; - - buffer->currentLineMaxHeight = 0; - m_buffers.insert(cacheId, buffer); - - return buffer; -} - -static inline int qt_next_power_of_two(int v) -{ - v--; - v |= v >> 1; - v |= v >> 2; - v |= v >> 4; - v |= v >> 8; - v |= v >> 16; - ++v; - return v; -} - -QXcbSharedBufferManager::Buffer *QXcbSharedBufferManager::resizeBuffer(Buffer *oldBuffer, const QSize &newSize) -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::resizeBuffer() called for %s (current size: %dx%d, new size: %dx%d)", - oldBuffer->cacheId.constData(), oldBuffer->width, oldBuffer->height, - newSize.width(), newSize.height()); -#endif - - // Remove old buffer from lists to avoid deleting it under our feet - if (m_leastRecentlyUsed == oldBuffer) - m_leastRecentlyUsed = oldBuffer->next; - if (m_mostRecentlyUsed == oldBuffer) - m_mostRecentlyUsed = oldBuffer->prev; - - if (oldBuffer->prev != 0) - oldBuffer->prev->next = oldBuffer->next; - if (oldBuffer->next != 0) - oldBuffer->next->prev = oldBuffer->prev; - - m_memoryUsed -= oldBuffer->width * oldBuffer->height * oldBuffer->bytesPerPixel; - m_buffers.remove(oldBuffer->cacheId, oldBuffer); - -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::resizeBuffer: Memory used: %d / %d (%6.2f %%)", - m_memoryUsed, SHAREDGRAPHICSCACHE_MAX_MEMORY_USED, - 100.0f * float(m_memoryUsed) / float(SHAREDGRAPHICSCACHE_MAX_MEMORY_USED)); -#endif - - Buffer *resizedBuffer = createNewBuffer(oldBuffer->cacheId, newSize.height()); - copyIntoBuffer(resizedBuffer, 0, 0, oldBuffer->width, oldBuffer->height, - reinterpret_cast<uchar *>(oldBuffer->buffer->data())); - - resizedBuffer->currentLineMaxHeight = oldBuffer->currentLineMaxHeight; - - Items *items = itemsForCache(oldBuffer->cacheId); - QHash<quint32, Item *>::const_iterator it = items->items.constBegin(); - while (it != items->items.constEnd()) { - Item *item = it.value(); - if (item->buffer == oldBuffer) { - m_pendingReadyItems[oldBuffer->cacheId].insert(item->itemId); - item->buffer = resizedBuffer; - } - ++it; - } - - resizedBuffer->nextX = oldBuffer->nextX; - resizedBuffer->nextY = oldBuffer->nextY; - resizedBuffer->currentLineMaxHeight = oldBuffer->currentLineMaxHeight; - - delete oldBuffer; - return resizedBuffer; -} - -void QXcbSharedBufferManager::findAvailableBuffer(int itemWidth, int itemHeight, - Buffer **sharedBuffer, int *glyphX, int *glyphY) -{ - Q_ASSERT(sharedBuffer != 0); - Q_ASSERT(glyphX != 0); - Q_ASSERT(glyphY != 0); - - QMultiHash<QByteArray, Buffer *>::iterator it = m_buffers.find(m_currentCacheId); - - int bufferCount = 0; - while (it != m_buffers.end() && it.key() == m_currentCacheId) { - Buffer *buffer = it.value(); - - int x = buffer->nextX; - int y = buffer->nextY; - int width = buffer->width; - int height = buffer->height; - - if (x + itemWidth <= width && y + itemHeight <= height) { - // There is space on the current line, put the item there - buffer->currentLineMaxHeight = qMax(buffer->currentLineMaxHeight, itemHeight); - *sharedBuffer = buffer; - *glyphX = x; - *glyphY = y; - - buffer->nextX += itemWidth; - - return; - } else if (itemWidth <= width && y + buffer->currentLineMaxHeight + itemHeight <= height) { - // There is space for a new line, put the item on the new line - buffer->nextX = 0; - buffer->nextY += buffer->currentLineMaxHeight; - buffer->currentLineMaxHeight = 0; - - *sharedBuffer = buffer; - *glyphX = buffer->nextX; - *glyphY = buffer->nextY; - - buffer->nextX += itemWidth; - - return; - } else if (y + buffer->currentLineMaxHeight + itemHeight <= SHAREDGRAPHICSCACHE_TEXTURE_SIZE) { - // There is space if we resize the buffer, so we do that - int newHeight = qt_next_power_of_two(y + buffer->currentLineMaxHeight + itemHeight); - buffer = resizeBuffer(buffer, QSize(width, newHeight)); - - buffer->nextX = 0; - buffer->nextY += buffer->currentLineMaxHeight; - buffer->currentLineMaxHeight = 0; - - *sharedBuffer = buffer; - *glyphX = buffer->nextX; - *glyphY = buffer->nextY; - - buffer->nextX += itemWidth; - return; - } - - bufferCount++; - ++it; - } - - if (bufferCount == SHAREDGRAPHICSCACHE_MAX_TEXTURES_PER_CACHE) { - // There is no space in any buffer, and there is no space for a new buffer - // recycle an old item - recycleItem(sharedBuffer, glyphX, glyphY); - } else { - // Create a new buffer for the item - *sharedBuffer = createNewBuffer(m_currentCacheId, qt_next_power_of_two(itemHeight)); - if (*sharedBuffer == 0) { - Q_ASSERT(false); - return; - } - - *glyphX = (*sharedBuffer)->nextX; - *glyphY = (*sharedBuffer)->nextY; - - (*sharedBuffer)->nextX += itemWidth; - } -} - -QXcbSharedBufferManager::Buffer *QXcbSharedBufferManager::allocateBuffer(int width, int height) -{ - Buffer *buffer = new Buffer; - buffer->nextX = 0; - buffer->nextY = 0; - buffer->width = width; - buffer->height = height; - buffer->bytesPerPixel = 1; // ### Use pixel format here - - buffer->buffer = new QSharedMemory(QUuid::createUuid().toString()); - bool ok = buffer->buffer->create(buffer->width * buffer->height * buffer->bytesPerPixel, - QSharedMemory::ReadWrite); - if (!ok) { - qWarning("QXcbSharedBufferManager::findAvailableBuffer: Can't create new buffer (%s)", - qPrintable(buffer->buffer->errorString())); - delete buffer; - return 0; - } - qMemSet(buffer->buffer->data(), 0, buffer->buffer->size()); - - m_memoryUsed += buffer->width * buffer->height * buffer->bytesPerPixel; - -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::allocateBuffer: Memory used: %d / %d (%6.2f %%)", - int(m_memoryUsed), int(SHAREDGRAPHICSCACHE_MAX_MEMORY_USED), - 100.0f * float(m_memoryUsed) / float(SHAREDGRAPHICSCACHE_MAX_MEMORY_USED)); -#endif - - return buffer; -} - -void QXcbSharedBufferManager::copyIntoBuffer(Buffer *buffer, - int bufferX, int bufferY, int width, int height, - uchar *data) -{ -#if defined(SHAREDBUFFERMANAGER_DEBUG) - qDebug("QXcbSharedBufferManager::copyIntoBuffer() called for %s (coords: %d, %d)", - buffer->cacheId.constData(), bufferX, bufferY); -#endif - - Q_ASSERT(bufferX >= 0); - Q_ASSERT(bufferX + width <= buffer->width); - Q_ASSERT(bufferY >= 0); - Q_ASSERT(bufferY + height <= buffer->height); - - uchar *dest = reinterpret_cast<uchar *>(buffer->buffer->data()); - dest += bufferX + bufferY * buffer->width; - for (int y=0; y<height; ++y) { - qMemCopy(dest, data, width); - - data += width; - dest += buffer->width; - } -} - -QXcbSharedBufferManager::Items *QXcbSharedBufferManager::itemsForCache(const QByteArray &cacheId) const -{ - Items *items = m_items.value(cacheId); - if (items == 0) { - items = new Items; - items->cacheId = cacheId; - m_items[cacheId] = items; - } - - return items; -} - -QT_END_NAMESPACE - -#endif // QT_USE_XCB_SHARED_GRAPHICS_CACHE |