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https://github.com/holub/mame
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65 lines
2.5 KiB
C++
65 lines
2.5 KiB
C++
// license:BSD-3-Clause
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// copyright-holders:Ryan Holtz
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//============================================================
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//
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// paramreader.cpp - BGFX shader parameter JSON reader
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//
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//============================================================
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#include "paramreader.h"
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#include "chainmanager.h"
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#include "frameparameter.h"
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#include "parameter.h"
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#include "timeparameter.h"
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#include "windowparameter.h"
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const parameter_reader::string_to_enum parameter_reader::TYPE_NAMES[parameter_reader::TYPE_COUNT] = {
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{ "frame", bgfx_parameter::parameter_type::PARAM_FRAME },
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{ "window", bgfx_parameter::parameter_type::PARAM_WINDOW },
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{ "time", bgfx_parameter::parameter_type::PARAM_TIME }
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};
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bgfx_parameter* parameter_reader::read_from_value(const Value& value, const std::string &prefix, chain_manager& chains)
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{
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if (!validate_parameters(value, prefix))
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{
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return nullptr;
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}
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std::string name = value["name"].GetString();
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bgfx_parameter::parameter_type type = bgfx_parameter::parameter_type(get_enum_from_value(value, "type", bgfx_parameter::parameter_type::PARAM_FRAME, TYPE_NAMES, TYPE_COUNT));
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if (type == bgfx_parameter::parameter_type::PARAM_FRAME)
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{
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uint32_t period = int(value["period"].GetDouble());
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return new bgfx_frame_parameter(std::move(name), type, period);
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}
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else if (type == bgfx_parameter::parameter_type::PARAM_WINDOW)
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{
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return new bgfx_window_parameter(std::move(name), type, chains.window_index());
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}
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else if (type == bgfx_parameter::parameter_type::PARAM_TIME)
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{
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auto limit = float(value["limit"].GetDouble());
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return new bgfx_time_parameter(std::move(name), type, limit);
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}
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else
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{
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READER_CHECK(false, "%sUnknown parameter type '%s'\n", prefix, value["type"].GetString());
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}
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return nullptr;
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}
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bool parameter_reader::validate_parameters(const Value& value, const std::string &prefix)
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{
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if (!READER_CHECK(value.HasMember("name"), "%sMust have string value 'name'\n", prefix)) return false;
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if (!READER_CHECK(value["name"].IsString(), "%sValue 'name' must be a string\n", prefix)) return false;
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if (!READER_CHECK(value.HasMember("type"), "%sMust have string value 'type'\n", prefix)) return false;
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if (!READER_CHECK(value["type"].IsString(), "%sValue 'type' must be a string\n", prefix)) return false;
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if (!READER_CHECK(!value.HasMember("period") || value["period"].IsNumber(), "%sValue 'period' must be numeric\n", prefix)) return false;
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if (!READER_CHECK(!value.HasMember("limit") || value["limit"].IsNumber(), "%sValue 'period' must be numeric\n", prefix)) return false;
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return true;
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}
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