| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef UI_DISPLAY_UTIL_EDID_PARSER_H_ |
| #define UI_DISPLAY_UTIL_EDID_PARSER_H_ |
| |
| #include <stdint.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/optional.h" |
| #include "third_party/skia/include/core/SkColorSpace.h" |
| #include "ui/display/util/display_util_export.h" |
| #include "ui/gfx/geometry/size.h" |
| |
| namespace display { |
| |
| // This class parses a EDID (Extended Display Identification Data) binary blob |
| // passed on constructor, and provides access to the parsed information, plus |
| // a few utility postprocessings. |
| class DISPLAY_UTIL_EXPORT EdidParser { |
| public: |
| explicit EdidParser(const std::vector<uint8_t>& edid_blob); |
| ~EdidParser(); |
| |
| uint16_t manufacturer_id() const { return manufacturer_id_; } |
| uint16_t product_id() const { return product_id_; } |
| const std::string& display_name() const { return display_name_; } |
| const gfx::Size& active_pixel_size() const { return active_pixel_size_; } |
| int32_t year_of_manufacture() const { return year_of_manufacture_; } |
| bool has_overscan_flag() const { return overscan_flag_.has_value(); } |
| bool overscan_flag() const { return overscan_flag_.value(); } |
| double gamma() const { return gamma_; } |
| int32_t bits_per_channel() const { return bits_per_channel_; } |
| const SkColorSpacePrimaries& primaries() const { return primaries_; } |
| |
| // Returns a 32-bit identifier for this display |manufacturer_id_| and |
| // |product_id_|. |
| uint32_t GetProductCode() const; |
| |
| // Generates a unique display id out of a mix of |manufacturer_id_|, hashed |
| // |display_name_| if available, and |output_index|. |
| int64_t GetDisplayId(uint8_t output_index) const; |
| |
| // Splits the |product_code| (as returned by GetDisplayId()) into its |
| // constituents |manufacturer_id| and |product_id|. |
| static void SplitProductCodeInManufacturerIdAndProductId( |
| int64_t product_code, |
| uint16_t* manufacturer_id, |
| uint16_t* product_id); |
| // Extracts the three letter Manufacturer ID out of |manufacturer_id|. |
| static std::string ManufacturerIdToString(uint16_t manufacturer_id); |
| // Extracts the 2 Byte Product ID as hex out of |product_id|. |
| static std::string ProductIdToString(uint16_t product_id); |
| |
| private: |
| // Parses |edid_blob|, filling up as many as possible fields below. |
| void ParseEdid(const std::vector<uint8_t>& edid); |
| |
| uint16_t manufacturer_id_; |
| uint16_t product_id_; |
| std::string display_name_; |
| // Active pixel size from the first detailed timing descriptor in the EDID. |
| gfx::Size active_pixel_size_; |
| int32_t year_of_manufacture_; |
| base::Optional<bool> overscan_flag_; |
| double gamma_; |
| int bits_per_channel_; |
| SkColorSpacePrimaries primaries_; |
| |
| DISALLOW_COPY_AND_ASSIGN(EdidParser); |
| }; |
| |
| } // namespace display |
| |
| #endif // UI_DISPLAY_UTIL_EDID_PARSER_H_ |