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//
// Copyright © 2020 Arm Ltd and Contributors. All rights reserved.
// SPDX-License-Identifier: MIT
//
#include "ClContextDeserializer.hpp"
#include "ClContextSchema_generated.h"
#include <armnn/Exceptions.hpp>
#include <armnn/utility/NumericCast.hpp>
#include <flatbuffers/flexbuffers.h>
#include <fmt/format.h>
#include <cstdlib>
#include <fstream>
#include <iostream>
#include <vector>
namespace armnn
{
void ClContextDeserializer::Deserialize(arm_compute::CLCompileContext& clCompileContext,
cl::Context& context,
cl::Device& device,
const std::string& filePath)
{
std::ifstream inputFileStream(filePath, std::ios::binary);
std::vector<std::uint8_t> binaryContent;
while (inputFileStream)
{
char input;
inputFileStream.get(input);
if (inputFileStream)
{
binaryContent.push_back(static_cast<std::uint8_t>(input));
}
}
inputFileStream.close();
DeserializeFromBinary(clCompileContext, context, device, binaryContent);
}
void ClContextDeserializer::DeserializeFromBinary(arm_compute::CLCompileContext& clCompileContext,
cl::Context& context,
cl::Device& device,
const std::vector<uint8_t>& binaryContent)
{
if (binaryContent.data() == nullptr)
{
throw InvalidArgumentException(fmt::format("Invalid (null) binary content {}",
CHECK_LOCATION().AsString()));
}
size_t binaryContentSize = binaryContent.size();
flatbuffers::Verifier verifier(binaryContent.data(), binaryContentSize);
if (verifier.VerifyBuffer<ClContext>() == false)
{
throw ParseException(fmt::format("Buffer doesn't conform to the expected Armnn "
"flatbuffers format. size:{0} {1}",
binaryContentSize,
CHECK_LOCATION().AsString()));
}
auto clContext = GetClContext(binaryContent.data());
for (Program const* program : *clContext->programs())
{
const char* volatile programName = program->name()->c_str();
auto programBinary = program->binary();
std::vector<uint8_t> binary(programBinary->begin(), programBinary->begin() + programBinary->size());
cl::Program::Binaries binaries{ binary };
std::vector<cl::Device> devices {device};
cl::Program theProgram(context, devices, binaries);
theProgram.build();
clCompileContext.add_built_program(programName, theProgram);
}
}
} // namespace armnn
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