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Diffstat (limited to 'libs/ui/Overlay.cpp')
| -rw-r--r-- | libs/ui/Overlay.cpp | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/libs/ui/Overlay.cpp b/libs/ui/Overlay.cpp new file mode 100644 index 0000000..b236edc --- /dev/null +++ b/libs/ui/Overlay.cpp @@ -0,0 +1,181 @@ +/* + * Copyright (C) 2007 The Android Open Source Project + * + * 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 <utils/IMemory.h> +#include <utils/Parcel.h> +#include <utils/Errors.h> +#include <utils/MemoryHeapBase.h> + +#include <ui/IOverlay.h> +#include <ui/Overlay.h> + +#include <hardware/overlay.h> + +namespace android { + +Overlay::Overlay(const sp<OverlayRef>& overlayRef) + : mOverlayRef(overlayRef), mOverlayData(0), mStatus(NO_INIT) +{ + mOverlayData = NULL; + hw_module_t const* module; + if (overlayRef != 0) { + if (hw_get_module(OVERLAY_HARDWARE_MODULE_ID, &module) == 0) { + if (overlay_data_open(module, &mOverlayData) == NO_ERROR) { + mStatus = mOverlayData->initialize(mOverlayData, + overlayRef->mOverlayHandle); + } + } + } +} + +Overlay::~Overlay() { + if (mOverlayData) { + overlay_data_close(mOverlayData); + } +} + +status_t Overlay::dequeueBuffer(overlay_buffer_t* buffer) +{ + if (mStatus != NO_ERROR) return mStatus; + return mOverlayData->dequeueBuffer(mOverlayData, buffer); +} + +status_t Overlay::queueBuffer(overlay_buffer_t buffer) +{ + if (mStatus != NO_ERROR) return mStatus; + return mOverlayData->queueBuffer(mOverlayData, buffer); +} + +int32_t Overlay::getBufferCount() const +{ + if (mStatus != NO_ERROR) return mStatus; + return mOverlayData->getBufferCount(mOverlayData); +} + +void* Overlay::getBufferAddress(overlay_buffer_t buffer) +{ + if (mStatus != NO_ERROR) return NULL; + return mOverlayData->getBufferAddress(mOverlayData, buffer); +} + +void Overlay::destroy() { + if (mStatus != NO_ERROR) return; + mOverlayRef->mOverlayChannel->destroy(); +} + +status_t Overlay::getStatus() const { + return mStatus; +} + +overlay_handle_t Overlay::getHandleRef() const { + if (mStatus != NO_ERROR) return NULL; + return mOverlayRef->mOverlayHandle; +} + +uint32_t Overlay::getWidth() const { + if (mStatus != NO_ERROR) return 0; + return mOverlayRef->mWidth; +} + +uint32_t Overlay::getHeight() const { + if (mStatus != NO_ERROR) return 0; + return mOverlayRef->mHeight; +} + +int32_t Overlay::getFormat() const { + if (mStatus != NO_ERROR) return -1; + return mOverlayRef->mFormat; +} + +int32_t Overlay::getWidthStride() const { + if (mStatus != NO_ERROR) return 0; + return mOverlayRef->mWidthStride; +} + +int32_t Overlay::getHeightStride() const { + if (mStatus != NO_ERROR) return 0; + return mOverlayRef->mHeightStride; +} +// ---------------------------------------------------------------------------- + +OverlayRef::OverlayRef() + : mOverlayHandle(0), + mWidth(0), mHeight(0), mFormat(0), mWidthStride(0), mHeightStride(0), + mOwnHandle(true) +{ +} + +OverlayRef::OverlayRef(overlay_handle_t handle, const sp<IOverlay>& channel, + uint32_t w, uint32_t h, int32_t f, uint32_t ws, uint32_t hs) + : mOverlayHandle(handle), mOverlayChannel(channel), + mWidth(w), mHeight(h), mFormat(f), mWidthStride(ws), mHeightStride(hs), + mOwnHandle(false) +{ +} + +OverlayRef::~OverlayRef() +{ + if (mOwnHandle) { + /* FIXME: handles should be promoted to "real" API and be handled by + * the framework */ + for (int i=0 ; i<mOverlayHandle->numFds ; i++) { + close(mOverlayHandle->data[i]); + } + free((void*)mOverlayHandle); + } +} + +sp<OverlayRef> OverlayRef::readFromParcel(const Parcel& data) { + sp<OverlayRef> result; + sp<IOverlay> overlay = IOverlay::asInterface(data.readStrongBinder()); + if (overlay != NULL) { + uint32_t w = data.readInt32(); + uint32_t h = data.readInt32(); + uint32_t f = data.readInt32(); + uint32_t ws = data.readInt32(); + uint32_t hs = data.readInt32(); + native_handle* handle = data.readNativeHandle(NULL, NULL); + + result = new OverlayRef(); + result->mOverlayHandle = handle; + result->mOverlayChannel = overlay; + result->mWidth = w; + result->mHeight = h; + result->mFormat = f; + result->mWidthStride = ws; + result->mHeightStride = hs; + } + return result; +} + +status_t OverlayRef::writeToParcel(Parcel* reply, const sp<OverlayRef>& o) { + if (o != NULL) { + reply->writeStrongBinder(o->mOverlayChannel->asBinder()); + reply->writeInt32(o->mWidth); + reply->writeInt32(o->mHeight); + reply->writeInt32(o->mFormat); + reply->writeInt32(o->mWidthStride); + reply->writeInt32(o->mHeightStride); + reply->writeNativeHandle(*(o->mOverlayHandle)); + } else { + reply->writeStrongBinder(NULL); + } + return NO_ERROR; +} + +// ---------------------------------------------------------------------------- + +}; // namespace android |