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// license:BSD-3-Clause
// copyright-holders:Ryan Holtz
//============================================================
//
// targetreader.cpp - BGFX target JSON reader
//
//============================================================
#include <string>
#include "emu.h"
#include <modules/lib/osdobj_common.h>
#include "targetreader.h"
#include "targetmanager.h"
#include "target.h"
const target_reader::string_to_enum target_reader::STYLE_NAMES[target_reader::STYLE_COUNT] = {
{ "guest", TARGET_STYLE_GUEST },
{ "native", TARGET_STYLE_NATIVE },
{ "custom", TARGET_STYLE_CUSTOM }
};
bgfx_target* target_reader::read_from_value(const Value& value, std::string prefix, target_manager& targets, osd_options& options, uint32_t screen_index)
{
if (!validate_parameters(value, prefix))
{
return nullptr;
}
std::string target_name = value["name"].GetString();
uint32_t mode = uint32_t(get_enum_from_value(value, "mode", TARGET_STYLE_NATIVE, STYLE_NAMES, STYLE_COUNT));
bool bilinear = get_bool(value, "bilinear", true);
bool double_buffer = get_bool(value, "doublebuffer", true);
int scale = 1;
if (value.HasMember("scale"))
{
scale = int(floor(value["scale"].GetDouble() + 0.5));
}
uint16_t width = 0;
uint16_t height = 0;
switch (mode)
{
case TARGET_STYLE_GUEST:
width = targets.width(TARGET_STYLE_GUEST, screen_index);
height = targets.height(TARGET_STYLE_GUEST, screen_index);
break;
case TARGET_STYLE_NATIVE:
width = targets.width(TARGET_STYLE_NATIVE, screen_index);
height = targets.height(TARGET_STYLE_NATIVE, screen_index);
break;
case TARGET_STYLE_CUSTOM:
if (!READER_CHECK(value.HasMember("width"), (prefix + "Target '" + target_name + "': Must have numeric value 'width'\n").c_str())) return nullptr;
if (!READER_CHECK(value["width"].IsNumber(), (prefix + "Target '" + target_name + "': Value 'width' must be a number\n").c_str())) return nullptr;
if (!READER_CHECK(value.HasMember("height"), (prefix + "Target '" + target_name + "': Must have numeric value 'height'\n").c_str())) return nullptr;
if (!READER_CHECK(value["height"].IsNumber(), (prefix + "Target '" + target_name + "': Value 'height' must be a number\n").c_str())) return nullptr;
width = uint16_t(value["width"].GetDouble());
height = uint16_t(value["height"].GetDouble());
break;
}
return targets.create_target(target_name, bgfx::TextureFormat::RGBA8, width, height, mode, double_buffer, bilinear, scale, screen_index);
}
bool target_reader::validate_parameters(const Value& value, std::string prefix)
{
if (!READER_CHECK(value.HasMember("name"), (prefix + "Must have string value 'name'\n").c_str())) return false;
if (!READER_CHECK(value["name"].IsString(), (prefix + "Value 'name' must be a string\n").c_str())) return false;
if (!READER_CHECK(value.HasMember("mode"), (prefix + "Must have string enum 'mode'\n").c_str())) return false;
if (!READER_CHECK(value["mode"].IsString(), (prefix + "Value 'mode' must be a string (what screens does this apply to?)\n").c_str())) return false;
if (!READER_CHECK(!value.HasMember("bilinear") || value["bilinear"].IsBool(), (prefix + "Value 'bilinear' must be a boolean\n").c_str())) return false;
if (!READER_CHECK(!value.HasMember("doublebuffer") || value["doublebuffer"].IsBool(), (prefix + "Value 'doublebuffer' must be a boolean\n").c_str())) return false;
if (!READER_CHECK(!value.HasMember("scale") || value["scale"].IsNumber(), (prefix + "Value 'scale' must be a numeric value\n").c_str())) return false;
return true;
}
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