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author | Teng-Hui Zhu <ztenghui@google.com> | 2011-08-03 15:31:41 -0700 |
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committer | Teng-Hui Zhu <ztenghui@google.com> | 2011-08-03 17:01:59 -0700 |
commit | 51c84083c0059a8e849bf0031704b0ec402059f0 (patch) | |
tree | ba4b61a3237a34d0ab642c10f530effeb147c830 /Source/WebCore/platform/graphics/android/TransferQueue.cpp | |
parent | 03137dd16df459ef3bee925373347982cb98124d (diff) | |
download | external_webkit-51c84083c0059a8e849bf0031704b0ec402059f0.zip external_webkit-51c84083c0059a8e849bf0031704b0ec402059f0.tar.gz external_webkit-51c84083c0059a8e849bf0031704b0ec402059f0.tar.bz2 |
Finalize the sync part.
Improve the sync part for the Shared Surface Texture.
Clean up the interface as much as possible.
bug:5044597
Change-Id: I123cc520fb447aeb6e72e90149d1658a657740f7
Diffstat (limited to 'Source/WebCore/platform/graphics/android/TransferQueue.cpp')
-rw-r--r-- | Source/WebCore/platform/graphics/android/TransferQueue.cpp | 174 |
1 files changed, 96 insertions, 78 deletions
diff --git a/Source/WebCore/platform/graphics/android/TransferQueue.cpp b/Source/WebCore/platform/graphics/android/TransferQueue.cpp index 878affb..0d48175 100644 --- a/Source/WebCore/platform/graphics/android/TransferQueue.cpp +++ b/Source/WebCore/platform/graphics/android/TransferQueue.cpp @@ -53,15 +53,14 @@ namespace WebCore { TransferQueue::TransferQueue() - : m_currentRemovingPaint(0) - , m_transferQueueIndex(0) + : m_transferQueueIndex(0) , m_fboID(0) , m_sharedSurfaceTextureId(0) , m_hasGLContext(true) { memset(&m_GLStateBeforeBlit, 0, sizeof(m_GLStateBeforeBlit)); - m_transferQueueItemLocks = new android::Mutex[ST_BUFFER_NUMBER]; + m_emptyItemCount = ST_BUFFER_NUMBER; m_transferQueue = new TileTransferData[ST_BUFFER_NUMBER]; for (int i = 0; i < ST_BUFFER_NUMBER; i++) { @@ -77,15 +76,9 @@ TransferQueue::~TransferQueue() glDeleteTextures(1, &m_sharedSurfaceTextureId); m_sharedSurfaceTextureId = 0; - delete[] m_transferQueueItemLocks; delete[] m_transferQueue; } -int TransferQueue::size() -{ - return ST_BUFFER_NUMBER; -} - void TransferQueue::initSharedSurfaceTextures(int width, int height) { if (!m_sharedSurfaceTextureId) { @@ -170,77 +163,55 @@ void TransferQueue::blitTileFromQueue(GLuint fboID, BaseTileTexture* destTex, GL GLUtils::checkGlError("copy the surface texture into the normal one"); } -bool TransferQueue::currentOpWaitingRemoval(const TileRenderInfo* renderInfo) +bool TransferQueue::readyForUpdate() { - if (m_currentRemovingPaint - && m_currentRemovingPaint == renderInfo->tilePainter) - return true; - return false; -} - -bool TransferQueue::lockForUpdate(int index, const TileRenderInfo* renderInfo) -{ - // Before dequeuing the buffer from Surface Texture, make sure this item - // has been consumed. We can't simply rely on dequeueBuffer, due to the - // UI thread may want to remove the current operation, so we have to add - // our own locking mechanism. - // For blocking case, the item's status should not be emptyItem. - while (m_transferQueueItemLocks[index].tryLock()) { - // If the current operation is on an resource which is going to be - // removed from UI thread, then early return. - if (currentOpWaitingRemoval(renderInfo)) { - XLOG("Quit bitmap update: operation is removed from UI thread!" - " x y %d %d", - renderInfo->x, renderInfo->y); - return false; - } - } + if (!getHasGLContext()) + return false; + // Don't use a while loop since when the WebView tear down, the emptyCount + // will still be 0, and we bailed out b/c of GL context lost. + if (!m_emptyItemCount) + m_transferQueueItemCond.wait(m_transferQueueItemLocks); - // And if we have lost GL Context, then we can just early return here. - if (!getHasGLContext()) { - m_transferQueue[index].status = pendingDiscard; - m_transferQueueItemLocks[index].unlock(); - XLOG("Quit bitmap update: No GL Context! x y %d %d", - renderInfo->x, renderInfo->y); + if (!getHasGLContext()) return false; - } return true; } +// Both getHasGLContext and setHasGLContext should be called within the lock. bool TransferQueue::getHasGLContext() { - android::Mutex::Autolock lock(m_hasGLContextLock); - bool hasContext = m_hasGLContext; - return hasContext; + return m_hasGLContext; } void TransferQueue::setHasGLContext(bool hasContext) { - android::Mutex::Autolock lock(m_hasGLContextLock); m_hasGLContext = hasContext; } +// Only called when WebView is destroyed. void TransferQueue::discardQueue() { + android::Mutex::Autolock lock(m_transferQueueItemLocks); + + for (int i = 0 ; i < ST_BUFFER_NUMBER; i++) + m_transferQueue[i].status = pendingDiscard; + + bool GLContextExisted = getHasGLContext(); // Unblock the Tex Gen thread first before Tile Page deletion. // Otherwise, there will be a deadlock while removing operations. setHasGLContext(false); - for (int i = 0 ; i < ST_BUFFER_NUMBER; i++) { - m_transferQueue[i].status = pendingDiscard; - m_transferQueueItemLocks[i].unlock(); - } + // Only signal once when GL context lost. + if (GLContextExisted) + m_transferQueueItemCond.signal(); } // Call on UI thread to copy from the shared Surface Texture to the BaseTile's texture. void TransferQueue::updateDirtyBaseTiles() { - bool unlockFlag[ST_BUFFER_NUMBER]; - memset(unlockFlag, 0, sizeof(unlockFlag)); - saveGLState(); - m_transferQueueLock.lock(); + android::Mutex::Autolock lock(m_transferQueueItemLocks); cleanupTransportQueue(); if (!getHasGLContext()) @@ -261,11 +232,11 @@ void TransferQueue::updateDirtyBaseTiles() m_sharedSurfaceTexture->updateTexImage(); - unlockFlag[index] = true; m_transferQueue[index].savedBaseTilePtr = 0; m_transferQueue[index].status = emptyItem; if (obsoleteBaseTile) { XLOG("Warning: the texture is obsolete for this baseTile"); + index = (index + 1) % ST_BUFFER_NUMBER; continue; } @@ -290,24 +261,80 @@ void TransferQueue::updateDirtyBaseTiles() restoreGLState(); - int unlockIndex = nextItemIndex; - for (int k = 0; k < ST_BUFFER_NUMBER; k++) { - // Check the same order as the updateTexImage. - if (unlockFlag[unlockIndex]) - m_transferQueueItemLocks[unlockIndex].unlock(); - unlockIndex = (unlockIndex + 1) % ST_BUFFER_NUMBER; + m_emptyItemCount = ST_BUFFER_NUMBER; + m_transferQueueItemCond.signal(); +} + +void TransferQueue::updateQueueWithBitmap(const TileRenderInfo* renderInfo, + int x, int y, const SkBitmap& bitmap) +{ + android::Mutex::Autolock lock(m_transferQueueItemLocks); + + bool ready = readyForUpdate(); + + if (!ready) { + XLOG("Quit bitmap update: not ready! for tile x y %d %d", + renderInfo->x, renderInfo->y); + return; } + // Dequeue the Surface Texture. + sp<ANativeWindow> ANW = m_ANW; + if (!ANW.get()) { + XLOG("ERROR: ANW is null"); + return; + } + ANativeWindowBuffer* anb; + + int status = ANW->dequeueBuffer(ANW.get(), &anb); + GLUtils::checkSurfaceTextureError("dequeueBuffer", status); + // a) Update surface texture + sp<android::GraphicBuffer> buf(new android::GraphicBuffer(anb, false)); + status |= ANW->lockBuffer(ANW.get(), buf->getNativeBuffer()); // Mutex Lock + GLUtils::checkSurfaceTextureError("lockBuffer", status); + + // Fill the buffer with the content of the bitmap + uint8_t* img = 0; + status |= buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN, (void**)(&img)); + GLUtils::checkSurfaceTextureError("lock", status); + + if (status == NO_ERROR) { + int row, col; + int bpp = 4; // Now we only deal with RGBA8888 format. + int width = TilesManager::instance()->tileWidth(); + int height = TilesManager::instance()->tileHeight(); + if (!x && !y && bitmap.width() == width && bitmap.height() == height) { + bitmap.lockPixels(); + uint8_t* bitmapOrigin = static_cast<uint8_t*>(bitmap.getPixels()); + // Copied line by line since we need to handle the offsets and stride. + for (row = 0 ; row < bitmap.height(); row ++) { + uint8_t* dst = &(img[(buf->getStride() * (row + x) + y) * bpp]); + uint8_t* src = &(bitmapOrigin[bitmap.width() * row * bpp]); + memcpy(dst, src, bpp * bitmap.width()); + } + bitmap.unlockPixels(); + } else { + // TODO: implement the partial invalidate here! + XLOG("ERROR: don't expect to get here yet before we support partial inval"); + } + } + buf->unlock(); + + status = ANW->queueBuffer(ANW.get(), buf->getNativeBuffer()); + GLUtils::checkSurfaceTextureError("queueBuffer", status); - m_transferQueueLock.unlock(); + // b) After update the Surface Texture, now udpate the transfer queue info. + addItemInTransferQueue(renderInfo); + XLOG("Bitmap updated x, y %d %d, baseTile %p", + renderInfo->x, renderInfo->y, renderInfo->baseTile); } // Note that there should be lock/unlock around this function call. // Currently only called by GLUtils::updateSharedSurfaceTextureWithBitmap. -void TransferQueue::addItemInTransferQueue(const TileRenderInfo* renderInfo, - int index) +void TransferQueue::addItemInTransferQueue(const TileRenderInfo* renderInfo) { - m_transferQueueIndex = index; + m_transferQueueIndex = (m_transferQueueIndex + 1) % ST_BUFFER_NUMBER; + int index = m_transferQueueIndex; if (m_transferQueue[index].savedBaseTilePtr || m_transferQueue[index].status != emptyItem) { XLOG("ERROR update a tile which is dirty already @ index %d", index); @@ -325,34 +352,25 @@ void TransferQueue::addItemInTransferQueue(const TileRenderInfo* renderInfo, textureInfo->m_painter = renderInfo->tilePainter; textureInfo->m_picture = renderInfo->textureInfo->m_pictureCount; + + m_emptyItemCount--; } -// Note: this need to be called within th m_transferQueueLock. +// Note: this need to be called within th lock. +// Only called by updateDirtyBaseTiles() for now void TransferQueue::cleanupTransportQueue() { - // We should call updateTexImage to the items first, - // then unlock. And we should start from the next item. - const int nextItemIndex = getNextTransferQueueIndex(); - bool needUnlock[ST_BUFFER_NUMBER]; - int index = nextItemIndex; + int index = getNextTransferQueueIndex(); for (int i = 0 ; i < ST_BUFFER_NUMBER; i++) { - needUnlock[index] = false; if (m_transferQueue[index].status == pendingDiscard) { m_sharedSurfaceTexture->updateTexImage(); m_transferQueue[index].savedBaseTilePtr = 0; - m_transferQueue[index].status == emptyItem; - needUnlock[index] = true; + m_transferQueue[index].status = emptyItem; } index = (index + 1) % ST_BUFFER_NUMBER; } - index = nextItemIndex; - for (int i = 0 ; i < ST_BUFFER_NUMBER; i++) { - if (needUnlock[index]) - m_transferQueueItemLocks[index].unlock(); - index = (index + 1) % ST_BUFFER_NUMBER; - } } void TransferQueue::saveGLState() |