| /* |
| * Copyright (c) 2014 - 2015, The Linux Foundation. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * * Neither the name of The Linux Foundation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
| * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
| * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
| * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <utils/locker.h> |
| #include <utils/constants.h> |
| #include <utils/debug.h> |
| #include <core/buffer_sync_handler.h> |
| |
| #include "core_impl.h" |
| |
| #define __CLASS__ "CoreInterface" |
| |
| #define GET_REVISION(version) (version >> 16) |
| #define GET_DATA_ALIGNMENT(version) ((version >> 8) & 0xFF) |
| #define GET_INSTRUCTION_SET(version) (version & 0xFF) |
| |
| namespace sde { |
| |
| // Currently, we support only one client and one session for display core. So, create a global |
| // singleton core object. |
| struct CoreSingleton { |
| CoreSingleton() : core_impl(NULL) { } |
| |
| CoreImpl *core_impl; |
| Locker locker; |
| } g_core; |
| |
| // TODO(user): Have a single structure handle carries all the interface pointers. |
| DisplayError CoreInterface::CreateCore(CoreEventHandler *event_handler, DebugHandler *debug_handler, |
| BufferAllocator *buffer_allocator, |
| BufferSyncHandler *buffer_sync_handler, |
| CoreInterface **interface, uint32_t client_version) { |
| SCOPE_LOCK(g_core.locker); |
| |
| if (!event_handler || !debug_handler || !buffer_allocator || !buffer_sync_handler || !interface) { |
| return kErrorParameters; |
| } |
| |
| // Check compatibility of client and core. |
| uint32_t lib_version = SDE_VERSION_TAG; |
| if (GET_REVISION(client_version) > GET_REVISION(lib_version)) { |
| return kErrorVersion; |
| } else if (GET_DATA_ALIGNMENT(client_version) != GET_DATA_ALIGNMENT(lib_version)) { |
| return kErrorDataAlignment; |
| } else if (GET_INSTRUCTION_SET(client_version) != GET_INSTRUCTION_SET(lib_version)) { |
| return kErrorInstructionSet; |
| } |
| |
| CoreImpl *&core_impl = g_core.core_impl; |
| if (core_impl) { |
| return kErrorUndefined; |
| } |
| |
| Debug::SetDebugHandler(debug_handler); |
| |
| // Create appropriate CoreImpl object based on client version. |
| if (GET_REVISION(client_version) == CoreImpl::kRevision) { |
| core_impl = new CoreImpl(event_handler, buffer_allocator, buffer_sync_handler); |
| } else { |
| return kErrorNotSupported; |
| } |
| |
| if (!core_impl) { |
| return kErrorMemory; |
| } |
| |
| DisplayError error = core_impl->Init(); |
| if (error != kErrorNone) { |
| delete core_impl; |
| core_impl = NULL; |
| return error; |
| } |
| |
| *interface = core_impl; |
| DLOGI("Open interface handle = %p", *interface); |
| |
| return kErrorNone; |
| } |
| |
| DisplayError CoreInterface::DestroyCore() { |
| SCOPE_LOCK(g_core.locker); |
| |
| DLOGI("Close handle"); |
| |
| CoreImpl *&core_impl = g_core.core_impl; |
| if (!core_impl) { |
| return kErrorUndefined; |
| } |
| |
| core_impl->Deinit(); |
| delete core_impl; |
| core_impl = NULL; |
| |
| return kErrorNone; |
| } |
| |
| } // namespace sde |
| |