/* * Copyright (C) 2008 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. */ #ifndef ANDROID_UI_PRIVATE_SW_GRALLOC_HANDLE_H #define ANDROID_UI_PRIVATE_SW_GRALLOC_HANDLE_H #include <stdint.h> #include <limits.h> #include <sys/cdefs.h> #include <hardware/gralloc.h> #include <errno.h> #include <cutils/native_handle.h> namespace android { /*****************************************************************************/ struct sw_gralloc_handle_t : public native_handle { // file-descriptors int fd; // ints int magic; int size; int base; int prot; int pid; static const int sNumInts = 5; static const int sNumFds = 1; static const int sMagic = '_sgh'; sw_gralloc_handle_t() : fd(-1), magic(sMagic), size(0), base(0), prot(0), pid(getpid()) { version = sizeof(native_handle); numInts = sNumInts; numFds = sNumFds; } ~sw_gralloc_handle_t() { magic = 0; } static int validate(const native_handle* h) { const sw_gralloc_handle_t* hnd = (const sw_gralloc_handle_t*)h; if (!h || h->version != sizeof(native_handle) || h->numInts != sNumInts || h->numFds != sNumFds || hnd->magic != sMagic) { return -EINVAL; } return 0; } static status_t alloc(uint32_t w, uint32_t h, int format, int usage, buffer_handle_t* handle, int32_t* stride); static status_t free(sw_gralloc_handle_t* hnd); static status_t registerBuffer(sw_gralloc_handle_t* hnd); static status_t unregisterBuffer(sw_gralloc_handle_t* hnd); static status_t lock(sw_gralloc_handle_t* hnd, int usage, int l, int t, int w, int h, void** vaddr); static status_t unlock(sw_gralloc_handle_t* hnd); }; /*****************************************************************************/ }; // namespace android #endif /* ANDROID_UI_PRIVATE_SW_GRALLOC_HANDLE_H */