diff options
Diffstat (limited to 'src/osd/modules/render/bgfx/targetreader.cpp')
-rw-r--r-- | src/osd/modules/render/bgfx/targetreader.cpp | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/src/osd/modules/render/bgfx/targetreader.cpp b/src/osd/modules/render/bgfx/targetreader.cpp new file mode 100644 index 00000000000..1f375155751 --- /dev/null +++ b/src/osd/modules/render/bgfx/targetreader.cpp @@ -0,0 +1,87 @@ +// 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 } +}; + +bool target_reader::read_from_value(const Value& value, std::string prefix, target_manager& targets, osd_options& options, uint32_t screen_width, uint32_t screen_height) +{ + if (!validate_parameters(value, prefix)) + { + return false; + } + + 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); + bool prescale = get_bool(value, "prescale", false); + bool output = get_bool(value, "output", false); + + uint16_t width = 0; + uint16_t height = 0; + switch (mode) + { + case TARGET_STYLE_GUEST: + width = targets.guest_width(); + height = targets.guest_height(); + break; + case TARGET_STYLE_NATIVE: + width = screen_width; + height = screen_height; + break; + case TARGET_STYLE_CUSTOM: + if (!READER_CHECK(value.HasMember("width"), (prefix + "Target '" + target_name + "': Must have numeric value 'width'\n").c_str())) return false; + if (!READER_CHECK(value["width"].IsNumber(), (prefix + "Target '" + target_name + "': Value 'width' must be a number\n").c_str())) return false; + if (!READER_CHECK(value.HasMember("height"), (prefix + "Target '" + target_name + "': Must have numeric value 'height'\n").c_str())) return false; + if (!READER_CHECK(value["height"].IsNumber(), (prefix + "Target '" + target_name + "': Value 'height' must be a number\n").c_str())) return false; + width = uint32_t(value["width"].GetDouble()); + height = uint32_t(value["height"].GetDouble()); + break; + } + + uint32_t prescale_x = 1; + uint32_t prescale_y = 1; + if (prescale) + { + prescale_x = options.bgfx_prescale_x(); + prescale_y = options.bgfx_prescale_y(); + } + + if (!output) + { + targets.create_target(target_name, bgfx::TextureFormat::RGBA8, width, height, prescale_x, prescale_y, mode, double_buffer, bilinear, output); + } + + return true; +} + +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("prescale") || value["prescale"].IsBool(), (prefix + "Value 'prescale' must be a boolean\n").c_str())) return false; + if (!READER_CHECK(!value.HasMember("output") || value["output"].IsBool(), (prefix + "Value 'output' must be a boolean\n").c_str())) return false; + return true; +} |