diff options
Diffstat (limited to 'widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferItem.cpp')
| -rw-r--r-- | widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferItem.cpp | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferItem.cpp b/widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferItem.cpp new file mode 100644 index 000000000..7df72bf68 --- /dev/null +++ b/widget/gonk/nativewindow/GonkBufferQueueLL/GonkBufferItem.cpp @@ -0,0 +1,193 @@ +/* + * Copyright 2014 The Android Open Source Project + * Copyright (C) 2014 Mozilla Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include "GonkBufferItem.h" + +#include <ui/Fence.h> +#include <ui/GraphicBuffer.h> + +#include <system/window.h> + +namespace android { + +GonkBufferItem::GonkBufferItem() : + mTransform(0), + mScalingMode(NATIVE_WINDOW_SCALING_MODE_FREEZE), + mTimestamp(0), + mIsAutoTimestamp(false), + mFrameNumber(0), + mSlot(INVALID_BUFFER_SLOT), + mIsDroppable(false), + mAcquireCalled(false), + mTransformToDisplayInverse(false) { + mCrop.makeInvalid(); +} + +GonkBufferItem::operator IGonkGraphicBufferConsumer::BufferItem() const { + IGonkGraphicBufferConsumer::BufferItem bufferItem; + bufferItem.mGraphicBuffer = mGraphicBuffer; + bufferItem.mFence = mFence; + bufferItem.mCrop = mCrop; + bufferItem.mTransform = mTransform; + bufferItem.mScalingMode = mScalingMode; + bufferItem.mTimestamp = mTimestamp; + bufferItem.mIsAutoTimestamp = mIsAutoTimestamp; + bufferItem.mFrameNumber = mFrameNumber; + bufferItem.mBuf = mSlot; + bufferItem.mIsDroppable = mIsDroppable; + bufferItem.mAcquireCalled = mAcquireCalled; + bufferItem.mTransformToDisplayInverse = mTransformToDisplayInverse; + return bufferItem; +} + +size_t GonkBufferItem::getPodSize() const { + size_t c = sizeof(mCrop) + + sizeof(mTransform) + + sizeof(mScalingMode) + + sizeof(mTimestamp) + + sizeof(mIsAutoTimestamp) + + sizeof(mFrameNumber) + + sizeof(mSlot) + + sizeof(mIsDroppable) + + sizeof(mAcquireCalled) + + sizeof(mTransformToDisplayInverse); + return c; +} + +size_t GonkBufferItem::getFlattenedSize() const { + size_t c = 0; + if (mGraphicBuffer != 0) { + c += mGraphicBuffer->getFlattenedSize(); + FlattenableUtils::align<4>(c); + } + if (mFence != 0) { + c += mFence->getFlattenedSize(); + FlattenableUtils::align<4>(c); + } + return sizeof(int32_t) + c + getPodSize(); +} + +size_t GonkBufferItem::getFdCount() const { + size_t c = 0; + if (mGraphicBuffer != 0) { + c += mGraphicBuffer->getFdCount(); + } + if (mFence != 0) { + c += mFence->getFdCount(); + } + return c; +} + +status_t GonkBufferItem::flatten( + void*& buffer, size_t& size, int*& fds, size_t& count) const { + + // make sure we have enough space + if (count < GonkBufferItem::getFlattenedSize()) { + return NO_MEMORY; + } + + // content flags are stored first + uint32_t& flags = *static_cast<uint32_t*>(buffer); + + // advance the pointer + FlattenableUtils::advance(buffer, size, sizeof(uint32_t)); + + flags = 0; + if (mGraphicBuffer != 0) { + status_t err = mGraphicBuffer->flatten(buffer, size, fds, count); + if (err) return err; + size -= FlattenableUtils::align<4>(buffer); + flags |= 1; + } + if (mFence != 0) { + status_t err = mFence->flatten(buffer, size, fds, count); + if (err) return err; + size -= FlattenableUtils::align<4>(buffer); + flags |= 2; + } + + // check we have enough space (in case flattening the fence/graphicbuffer lied to us) + if (size < getPodSize()) { + return NO_MEMORY; + } + + FlattenableUtils::write(buffer, size, mCrop); + FlattenableUtils::write(buffer, size, mTransform); + FlattenableUtils::write(buffer, size, mScalingMode); + FlattenableUtils::write(buffer, size, mTimestamp); + FlattenableUtils::write(buffer, size, mIsAutoTimestamp); + FlattenableUtils::write(buffer, size, mFrameNumber); + FlattenableUtils::write(buffer, size, mSlot); + FlattenableUtils::write(buffer, size, mIsDroppable); + FlattenableUtils::write(buffer, size, mAcquireCalled); + FlattenableUtils::write(buffer, size, mTransformToDisplayInverse); + + return NO_ERROR; +} + +status_t GonkBufferItem::unflatten( + void const*& buffer, size_t& size, int const*& fds, size_t& count) { + + if (size < sizeof(uint32_t)) + return NO_MEMORY; + + uint32_t flags = 0; + FlattenableUtils::read(buffer, size, flags); + + if (flags & 1) { + mGraphicBuffer = new GraphicBuffer(); + status_t err = mGraphicBuffer->unflatten(buffer, size, fds, count); + if (err) return err; + size -= FlattenableUtils::align<4>(buffer); + } + + if (flags & 2) { + mFence = new Fence(); + status_t err = mFence->unflatten(buffer, size, fds, count); + if (err) return err; + size -= FlattenableUtils::align<4>(buffer); + } + + // check we have enough space + if (size < getPodSize()) { + return NO_MEMORY; + } + + FlattenableUtils::read(buffer, size, mCrop); + FlattenableUtils::read(buffer, size, mTransform); + FlattenableUtils::read(buffer, size, mScalingMode); + FlattenableUtils::read(buffer, size, mTimestamp); + FlattenableUtils::read(buffer, size, mIsAutoTimestamp); + FlattenableUtils::read(buffer, size, mFrameNumber); + FlattenableUtils::read(buffer, size, mSlot); + FlattenableUtils::read(buffer, size, mIsDroppable); + FlattenableUtils::read(buffer, size, mAcquireCalled); + FlattenableUtils::read(buffer, size, mTransformToDisplayInverse); + + return NO_ERROR; +} + +const char* GonkBufferItem::scalingModeName(uint32_t scalingMode) { + switch (scalingMode) { + case NATIVE_WINDOW_SCALING_MODE_FREEZE: return "FREEZE"; + case NATIVE_WINDOW_SCALING_MODE_SCALE_TO_WINDOW: return "SCALE_TO_WINDOW"; + case NATIVE_WINDOW_SCALING_MODE_SCALE_CROP: return "SCALE_CROP"; + default: return "Unknown"; + } +} + +} // namespace android |