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/*
* 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 sdm {
// 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(DebugHandler *debug_handler,
BufferAllocator *buffer_allocator,
BufferSyncHandler *buffer_sync_handler,
CoreInterface **interface, uint32_t client_version) {
return CreateCore(debug_handler, buffer_allocator, buffer_sync_handler, NULL,
interface, client_version);
}
DisplayError CoreInterface::CreateCore(DebugHandler *debug_handler,
BufferAllocator *buffer_allocator,
BufferSyncHandler *buffer_sync_handler,
SocketHandler *socket_handler,
CoreInterface **interface, uint32_t client_version) {
SCOPE_LOCK(g_core.locker);
if (!debug_handler || !buffer_allocator || !buffer_sync_handler || !interface) {
return kErrorParameters;
}
// Check compatibility of client and core.
uint32_t lib_version = SDM_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(buffer_allocator, buffer_sync_handler, socket_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 sdm
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