/* * 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> #include <pixelflinger/pixelflinger.h> namespace android { // =========================================================================== // Buffer and implementation of android_native_buffer_t // =========================================================================== GraphicBuffer::GraphicBuffer() : BASE(), mOwner(ownData), mBufferMapper(GraphicBufferMapper::get()), mInitCheck(NO_ERROR), mIndex(-1) { 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), mIndex(-1) { 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), mIndex(-1) { width = w; height = h; stride = inStride; format = inFormat; usage = inUsage; handle = inHandle; } GraphicBuffer::~GraphicBuffer() { if (handle) { free_handle(); } } void GraphicBuffer::free_handle() { if (mOwner == ownHandle) { native_handle_close(handle); native_handle_delete(const_cast<native_handle*>(handle)); } else if (mOwner == ownData) { GraphicBufferAllocator& allocator(GraphicBufferAllocator::get()); allocator.free(handle); } } status_t GraphicBuffer::initCheck() const { return mInitCheck; } android_native_buffer_t* GraphicBuffer::getNativeBuffer() const { return static_cast<android_native_buffer_t*>( 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) { LOGE("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::unlock() { status_t res = getBufferMapper().unlock(handle); return res; } status_t GraphicBuffer::lock(GGLSurface* sur, uint32_t usage) { void* vaddr; status_t res = GraphicBuffer::lock(usage, &vaddr); if (res == NO_ERROR && sur) { sur->version = sizeof(GGLSurface); sur->width = width; sur->height = height; sur->stride = stride; sur->format = format; sur->data = static_cast<GGLubyte*>(vaddr); } return res; } size_t GraphicBuffer::getFlattenedSize() const { return (8 + (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; int* buf = static_cast<int*>(buffer); buf[0] = 'GBFR'; buf[1] = width; buf[2] = height; buf[3] = stride; buf[4] = format; buf[5] = usage; buf[6] = 0; buf[7] = 0; if (handle) { buf[6] = handle->numFds; buf[7] = handle->numInts; native_handle_t const* const h = handle; memcpy(fds, h->data, h->numFds*sizeof(int)); memcpy(&buf[8], h->data + h->numFds, h->numInts*sizeof(int)); } return NO_ERROR; } status_t GraphicBuffer::unflatten(void const* buffer, size_t size, int 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[6]; const size_t numInts = buf[7]; const size_t sizeNeeded = (8 + 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[8], numInts*sizeof(int)); handle = h; } else { width = height = stride = format = usage = 0; handle = NULL; } mOwner = ownHandle; return NO_ERROR; } void GraphicBuffer::setIndex(int index) { mIndex = index; } int GraphicBuffer::getIndex() const { return mIndex; } // --------------------------------------------------------------------------- }; // namespace android