| /* |
| * 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. |
| */ |
| |
| #define LOG_TAG "GraphicBuffer" |
| |
| #include <stdlib.h> |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <utils/Errors.h> |
| #include <utils/Log.h> |
| |
| #include <ui/GraphicBuffer.h> |
| #include <ui/GraphicBufferAllocator.h> |
| #include <ui/GraphicBufferMapper.h> |
| #include <ui/PixelFormat.h> |
| |
| namespace android { |
| |
| // =========================================================================== |
| // Buffer and implementation of ANativeWindowBuffer |
| // =========================================================================== |
| |
| static uint64_t getUniqueId() { |
| static volatile int32_t nextId = 0; |
| uint64_t id = static_cast<uint64_t>(getpid()) << 32; |
| id |= static_cast<uint32_t>(android_atomic_inc(&nextId)); |
| return id; |
| } |
| |
| GraphicBuffer::GraphicBuffer() |
| : BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()), |
| mInitCheck(NO_ERROR), mId(getUniqueId()) |
| { |
| width = |
| height = |
| stride = |
| format = |
| usage = 0; |
| handle = NULL; |
| } |
| |
| GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h, |
| PixelFormat reqFormat, uint32_t reqUsage) |
| : BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()), |
| mInitCheck(NO_ERROR), mId(getUniqueId()) |
| { |
| width = |
| height = |
| stride = |
| format = |
| usage = 0; |
| handle = NULL; |
| mInitCheck = initSize(w, h, reqFormat, reqUsage); |
| } |
| |
| GraphicBuffer::GraphicBuffer(uint32_t w, uint32_t h, |
| PixelFormat inFormat, uint32_t inUsage, |
| uint32_t inStride, native_handle_t* inHandle, bool keepOwnership) |
| : BASE(), mOwner(keepOwnership ? ownHandle : ownNone), |
| mBufferMapper(GraphicBufferMapper::get()), |
| mInitCheck(NO_ERROR), mId(getUniqueId()) |
| { |
| width = w; |
| height = h; |
| stride = inStride; |
| format = inFormat; |
| usage = inUsage; |
| handle = inHandle; |
| } |
| |
| GraphicBuffer::GraphicBuffer(ANativeWindowBuffer* buffer, bool keepOwnership) |
| : BASE(), mOwner(keepOwnership ? ownHandle : ownNone), |
| mBufferMapper(GraphicBufferMapper::get()), |
| mInitCheck(NO_ERROR), mWrappedBuffer(buffer), mId(getUniqueId()) |
| { |
| width = buffer->width; |
| height = buffer->height; |
| stride = buffer->stride; |
| format = buffer->format; |
| usage = buffer->usage; |
| handle = buffer->handle; |
| } |
| |
| GraphicBuffer::~GraphicBuffer() |
| { |
| if (handle) { |
| free_handle(); |
| } |
| } |
| |
| void GraphicBuffer::free_handle() |
| { |
| if (mOwner == ownHandle) { |
| mBufferMapper.unregisterBuffer(handle); |
| native_handle_close(handle); |
| native_handle_delete(const_cast<native_handle*>(handle)); |
| } else if (mOwner == ownData) { |
| GraphicBufferAllocator& allocator(GraphicBufferAllocator::get()); |
| allocator.free(handle); |
| } |
| mWrappedBuffer = 0; |
| } |
| |
| status_t GraphicBuffer::initCheck() const { |
| return mInitCheck; |
| } |
| |
| void GraphicBuffer::dumpAllocationsToSystemLog() |
| { |
| GraphicBufferAllocator::dumpToSystemLog(); |
| } |
| |
| ANativeWindowBuffer* GraphicBuffer::getNativeBuffer() const |
| { |
| return static_cast<ANativeWindowBuffer*>( |
| const_cast<GraphicBuffer*>(this)); |
| } |
| |
| status_t GraphicBuffer::reallocate(uint32_t w, uint32_t h, PixelFormat f, |
| uint32_t reqUsage) |
| { |
| if (mOwner != ownData) |
| return INVALID_OPERATION; |
| |
| if (handle && w==width && h==height && f==format && reqUsage==usage) |
| return NO_ERROR; |
| |
| if (handle) { |
| GraphicBufferAllocator& allocator(GraphicBufferAllocator::get()); |
| allocator.free(handle); |
| handle = 0; |
| } |
| return initSize(w, h, f, reqUsage); |
| } |
| |
| status_t GraphicBuffer::initSize(uint32_t w, uint32_t h, PixelFormat format, |
| uint32_t reqUsage) |
| { |
| GraphicBufferAllocator& allocator = GraphicBufferAllocator::get(); |
| status_t err = allocator.alloc(w, h, format, reqUsage, &handle, &stride); |
| if (err == NO_ERROR) { |
| this->width = w; |
| this->height = h; |
| this->format = format; |
| this->usage = reqUsage; |
| } |
| return err; |
| } |
| |
| status_t GraphicBuffer::lock(uint32_t usage, void** vaddr) |
| { |
| const Rect lockBounds(width, height); |
| status_t res = lock(usage, lockBounds, vaddr); |
| return res; |
| } |
| |
| status_t GraphicBuffer::lock(uint32_t usage, const Rect& rect, void** vaddr) |
| { |
| if (rect.left < 0 || rect.right > this->width || |
| rect.top < 0 || rect.bottom > this->height) { |
| ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)", |
| rect.left, rect.top, rect.right, rect.bottom, |
| this->width, this->height); |
| return BAD_VALUE; |
| } |
| status_t res = getBufferMapper().lock(handle, usage, rect, vaddr); |
| return res; |
| } |
| |
| status_t GraphicBuffer::lockYCbCr(uint32_t usage, android_ycbcr *ycbcr) |
| { |
| const Rect lockBounds(width, height); |
| status_t res = lockYCbCr(usage, lockBounds, ycbcr); |
| return res; |
| } |
| |
| status_t GraphicBuffer::lockYCbCr(uint32_t usage, const Rect& rect, |
| android_ycbcr *ycbcr) |
| { |
| if (rect.left < 0 || rect.right > this->width || |
| rect.top < 0 || rect.bottom > this->height) { |
| ALOGE("locking pixels (%d,%d,%d,%d) outside of buffer (w=%d, h=%d)", |
| rect.left, rect.top, rect.right, rect.bottom, |
| this->width, this->height); |
| return BAD_VALUE; |
| } |
| status_t res = getBufferMapper().lockYCbCr(handle, usage, rect, ycbcr); |
| return res; |
| } |
| |
| status_t GraphicBuffer::unlock() |
| { |
| status_t res = getBufferMapper().unlock(handle); |
| return res; |
| } |
| |
| size_t GraphicBuffer::getFlattenedSize() const { |
| return (10 + (handle ? handle->numInts : 0))*sizeof(int); |
| } |
| |
| size_t GraphicBuffer::getFdCount() const { |
| return handle ? handle->numFds : 0; |
| } |
| |
| status_t GraphicBuffer::flatten(void*& buffer, size_t& size, int*& fds, size_t& count) const { |
| size_t sizeNeeded = GraphicBuffer::getFlattenedSize(); |
| if (size < sizeNeeded) return NO_MEMORY; |
| |
| size_t fdCountNeeded = GraphicBuffer::getFdCount(); |
| if (count < fdCountNeeded) return NO_MEMORY; |
| |
| int32_t* buf = static_cast<int32_t*>(buffer); |
| buf[0] = 'GBFR'; |
| buf[1] = width; |
| buf[2] = height; |
| buf[3] = stride; |
| buf[4] = format; |
| buf[5] = usage; |
| buf[6] = static_cast<int32_t>(mId >> 32); |
| buf[7] = static_cast<int32_t>(mId & 0xFFFFFFFFull); |
| buf[8] = 0; |
| buf[9] = 0; |
| |
| if (handle) { |
| buf[8] = handle->numFds; |
| buf[9] = handle->numInts; |
| native_handle_t const* const h = handle; |
| memcpy(fds, h->data, h->numFds*sizeof(int)); |
| memcpy(&buf[10], h->data + h->numFds, h->numInts*sizeof(int)); |
| } |
| |
| buffer = reinterpret_cast<void*>(static_cast<int*>(buffer) + sizeNeeded); |
| size -= sizeNeeded; |
| if (handle) { |
| fds += handle->numFds; |
| count -= handle->numFds; |
| } |
| |
| return NO_ERROR; |
| } |
| |
| status_t GraphicBuffer::unflatten( |
| void const*& buffer, size_t& size, int const*& fds, size_t& count) { |
| if (size < 8*sizeof(int)) return NO_MEMORY; |
| |
| int const* buf = static_cast<int const*>(buffer); |
| if (buf[0] != 'GBFR') return BAD_TYPE; |
| |
| const size_t numFds = buf[8]; |
| const size_t numInts = buf[9]; |
| |
| const size_t sizeNeeded = (10 + numInts) * sizeof(int); |
| if (size < sizeNeeded) return NO_MEMORY; |
| |
| size_t fdCountNeeded = 0; |
| if (count < fdCountNeeded) return NO_MEMORY; |
| |
| if (handle) { |
| // free previous handle if any |
| free_handle(); |
| } |
| |
| if (numFds || numInts) { |
| width = buf[1]; |
| height = buf[2]; |
| stride = buf[3]; |
| format = buf[4]; |
| usage = buf[5]; |
| native_handle* h = native_handle_create(numFds, numInts); |
| memcpy(h->data, fds, numFds*sizeof(int)); |
| memcpy(h->data + numFds, &buf[10], numInts*sizeof(int)); |
| handle = h; |
| } else { |
| width = height = stride = format = usage = 0; |
| handle = NULL; |
| } |
| |
| mId = static_cast<uint64_t>(buf[6]) << 32; |
| mId |= static_cast<uint32_t>(buf[7]); |
| |
| mOwner = ownHandle; |
| |
| if (handle != 0) { |
| status_t err = mBufferMapper.registerBuffer(handle); |
| if (err != NO_ERROR) { |
| width = height = stride = format = usage = 0; |
| handle = NULL; |
| ALOGE("unflatten: registerBuffer failed: %s (%d)", |
| strerror(-err), err); |
| return err; |
| } |
| } |
| |
| buffer = reinterpret_cast<void const*>(static_cast<int const*>(buffer) + sizeNeeded); |
| size -= sizeNeeded; |
| fds += numFds; |
| count -= numFds; |
| |
| return NO_ERROR; |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| }; // namespace android |