| // Copyright 2016 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. |
| |
| #include "media/formats/webm/webm_colour_parser.h" |
| |
| #include "base/logging.h" |
| #include "media/formats/webm/webm_constants.h" |
| |
| namespace media { |
| |
| // The definitions below are copied from the current libwebm top-of-tree. |
| // Chromium's third_party/libwebm doesn't have these yet. We can probably just |
| // include libwebm header directly in the future. |
| // ---- Begin copy/paste from libwebm/webm_parser/include/webm/dom_types.h ---- |
| |
| /** |
| A parsed \WebMID{MatrixCoefficients} element. |
| |
| Matroska/WebM adopted these values from Table 4 of ISO/IEC 23001-8:2013/DCOR1. |
| See that document for further details. |
| */ |
| enum class MatrixCoefficients : std::uint64_t { |
| /** |
| The identity matrix. |
| |
| Typically used for GBR (often referred to as RGB); however, may also be used |
| for YZX (often referred to as XYZ). |
| */ |
| kRgb = 0, |
| |
| /** |
| Rec. ITU-R BT.709-5. |
| */ |
| kBt709 = 1, |
| |
| /** |
| Image characteristics are unknown or are determined by the application. |
| */ |
| kUnspecified = 2, |
| |
| /** |
| United States Federal Communications Commission Title 47 Code of Federal |
| Regulations (2003) 73.682 (a) (20). |
| */ |
| kFcc = 4, |
| |
| /** |
| Rec. ITU-R BT.470‑6 System B, G (historical). |
| */ |
| kBt470Bg = 5, |
| |
| /** |
| Society of Motion Picture and Television Engineers 170M (2004). |
| */ |
| kSmpte170M = 6, |
| |
| /** |
| Society of Motion Picture and Television Engineers 240M (1999). |
| */ |
| kSmpte240M = 7, |
| |
| /** |
| YCgCo. |
| */ |
| kYCgCo = 8, |
| |
| /** |
| Rec. ITU-R BT.2020 (non-constant luminance). |
| */ |
| kBt2020NonconstantLuminance = 9, |
| |
| /** |
| Rec. ITU-R BT.2020 (constant luminance). |
| */ |
| kBt2020ConstantLuminance = 10, |
| }; |
| |
| /** |
| A parsed \WebMID{Range} element. |
| */ |
| enum class Range : std::uint64_t { |
| /** |
| Unspecified. |
| */ |
| kUnspecified = 0, |
| |
| /** |
| Broadcast range. |
| */ |
| kBroadcast = 1, |
| |
| /** |
| Full range (no clipping). |
| */ |
| kFull = 2, |
| |
| /** |
| Defined by MatrixCoefficients/TransferCharacteristics. |
| */ |
| kDerived = 3, |
| }; |
| |
| /** |
| A parsed \WebMID{TransferCharacteristics} element. |
| |
| Matroska/WebM adopted these values from Table 3 of ISO/IEC 23001-8:2013/DCOR1. |
| See that document for further details. |
| */ |
| enum class TransferCharacteristics : std::uint64_t { |
| /** |
| Rec. ITU-R BT.709-6. |
| */ |
| kBt709 = 1, |
| |
| /** |
| Image characteristics are unknown or are determined by the application. |
| */ |
| kUnspecified = 2, |
| |
| /** |
| Rec. ITU‑R BT.470‑6 System M (historical) with assumed display gamma 2.2. |
| */ |
| kGamma22curve = 4, |
| |
| /** |
| Rec. ITU‑R BT.470-6 System B, G (historical) with assumed display gamma 2.8. |
| */ |
| kGamma28curve = 5, |
| |
| /** |
| Society of Motion Picture and Television Engineers 170M (2004). |
| */ |
| kSmpte170M = 6, |
| |
| /** |
| Society of Motion Picture and Television Engineers 240M (1999). |
| */ |
| kSmpte240M = 7, |
| |
| /** |
| Linear transfer characteristics. |
| */ |
| kLinear = 8, |
| |
| /** |
| Logarithmic transfer characteristic (100:1 range). |
| */ |
| kLog = 9, |
| |
| /** |
| Logarithmic transfer characteristic (100 * Sqrt(10) : 1 range). |
| */ |
| kLogSqrt = 10, |
| |
| /** |
| IEC 61966-2-4. |
| */ |
| kIec6196624 = 11, |
| |
| /** |
| Rec. ITU‑R BT.1361-0 extended colour gamut system (historical). |
| */ |
| kBt1361ExtendedColourGamut = 12, |
| |
| /** |
| IEC 61966-2-1 sRGB or sYCC. |
| */ |
| kIec6196621 = 13, |
| |
| /** |
| Rec. ITU-R BT.2020-2 (10-bit system). |
| */ |
| k10BitBt2020 = 14, |
| |
| /** |
| Rec. ITU-R BT.2020-2 (12-bit system). |
| */ |
| k12BitBt2020 = 15, |
| |
| /** |
| Society of Motion Picture and Television Engineers ST 2084. |
| */ |
| kSmpteSt2084 = 16, |
| |
| /** |
| Society of Motion Picture and Television Engineers ST 428-1. |
| */ |
| kSmpteSt4281 = 17, |
| |
| /** |
| Association of Radio Industries and Businesses (ARIB) STD-B67. |
| */ |
| kAribStdB67Hlg = 18, |
| }; |
| |
| /** |
| A parsed \WebMID{Primaries} element. |
| |
| Matroska/WebM adopted these values from Table 2 of ISO/IEC 23001-8:2013/DCOR1. |
| See that document for further details. |
| */ |
| enum class Primaries : std::uint64_t { |
| /** |
| Rec. ITU‑R BT.709-6. |
| */ |
| kBt709 = 1, |
| |
| /** |
| Image characteristics are unknown or are determined by the application. |
| */ |
| kUnspecified = 2, |
| |
| /** |
| Rec. ITU‑R BT.470‑6 System M (historical). |
| */ |
| kBt470M = 4, |
| |
| /** |
| Rec. ITU‑R BT.470‑6 System B, G (historical). |
| */ |
| kBt470Bg = 5, |
| |
| /** |
| Society of Motion Picture and Television Engineers 170M (2004). |
| */ |
| kSmpte170M = 6, |
| |
| /** |
| Society of Motion Picture and Television Engineers 240M (1999). |
| */ |
| kSmpte240M = 7, |
| |
| /** |
| Generic film. |
| */ |
| kFilm = 8, |
| |
| /** |
| Rec. ITU-R BT.2020-2. |
| */ |
| kBt2020 = 9, |
| |
| /** |
| Society of Motion Picture and Television Engineers ST 428-1. |
| */ |
| kSmpteSt4281 = 10, |
| |
| /** |
| JEDEC P22 phosphors/EBU Tech. 3213-E (1975). |
| */ |
| kJedecP22Phosphors = 22, |
| }; |
| |
| // ---- End copy/paste from libwebm/webm_parser/include/webm/dom_types.h ---- |
| |
| WebMColorMetadata::WebMColorMetadata() = default; |
| WebMColorMetadata::WebMColorMetadata(const WebMColorMetadata& rhs) = default; |
| |
| WebMMasteringMetadataParser::WebMMasteringMetadataParser() = default; |
| WebMMasteringMetadataParser::~WebMMasteringMetadataParser() = default; |
| |
| bool WebMMasteringMetadataParser::OnFloat(int id, double val) { |
| switch (id) { |
| case kWebMIdPrimaryRChromaticityX: |
| mastering_metadata_.primary_r.set_x(val); |
| break; |
| case kWebMIdPrimaryRChromaticityY: |
| mastering_metadata_.primary_r.set_y(val); |
| break; |
| case kWebMIdPrimaryGChromaticityX: |
| mastering_metadata_.primary_g.set_x(val); |
| break; |
| case kWebMIdPrimaryGChromaticityY: |
| mastering_metadata_.primary_g.set_y(val); |
| break; |
| case kWebMIdPrimaryBChromaticityX: |
| mastering_metadata_.primary_b.set_x(val); |
| break; |
| case kWebMIdPrimaryBChromaticityY: |
| mastering_metadata_.primary_b.set_y(val); |
| break; |
| case kWebMIdWhitePointChromaticityX: |
| mastering_metadata_.white_point.set_x(val); |
| break; |
| case kWebMIdWhitePointChromaticityY: |
| mastering_metadata_.white_point.set_y(val); |
| break; |
| case kWebMIdLuminanceMax: |
| mastering_metadata_.luminance_max = val; |
| break; |
| case kWebMIdLuminanceMin: |
| mastering_metadata_.luminance_min = val; |
| break; |
| default: |
| DVLOG(1) << "Unexpected id in MasteringMetadata: 0x" << std::hex << id; |
| return false; |
| } |
| return true; |
| } |
| |
| WebMColourParser::WebMColourParser() { |
| Reset(); |
| } |
| |
| WebMColourParser::~WebMColourParser() = default; |
| |
| void WebMColourParser::Reset() { |
| matrix_coefficients_ = -1; |
| bits_per_channel_ = -1; |
| chroma_subsampling_horz_ = -1; |
| chroma_subsampling_vert_ = -1; |
| cb_subsampling_horz_ = -1; |
| cb_subsampling_vert_ = -1; |
| chroma_siting_horz_ = -1; |
| chroma_siting_vert_ = -1; |
| range_ = -1; |
| transfer_characteristics_ = -1; |
| primaries_ = -1; |
| max_content_light_level_ = -1; |
| max_frame_average_light_level_ = -1; |
| } |
| |
| WebMParserClient* WebMColourParser::OnListStart(int id) { |
| if (id == kWebMIdMasteringMetadata) { |
| mastering_metadata_parsed_ = false; |
| return &mastering_metadata_parser_; |
| } |
| |
| return this; |
| } |
| |
| bool WebMColourParser::OnListEnd(int id) { |
| if (id == kWebMIdMasteringMetadata) |
| mastering_metadata_parsed_ = true; |
| return true; |
| } |
| |
| bool WebMColourParser::OnUInt(int id, int64_t val) { |
| int64_t* dst = nullptr; |
| |
| switch (id) { |
| case kWebMIdMatrixCoefficients: |
| dst = &matrix_coefficients_; |
| break; |
| case kWebMIdBitsPerChannel: |
| dst = &bits_per_channel_; |
| break; |
| case kWebMIdChromaSubsamplingHorz: |
| dst = &chroma_subsampling_horz_; |
| break; |
| case kWebMIdChromaSubsamplingVert: |
| dst = &chroma_subsampling_vert_; |
| break; |
| case kWebMIdCbSubsamplingHorz: |
| dst = &cb_subsampling_horz_; |
| break; |
| case kWebMIdCbSubsamplingVert: |
| dst = &cb_subsampling_vert_; |
| break; |
| case kWebMIdChromaSitingHorz: |
| dst = &chroma_siting_horz_; |
| break; |
| case kWebMIdChromaSitingVert: |
| dst = &chroma_siting_vert_; |
| break; |
| case kWebMIdRange: |
| dst = &range_; |
| break; |
| case kWebMIdTransferCharacteristics: |
| dst = &transfer_characteristics_; |
| break; |
| case kWebMIdPrimaries: |
| dst = &primaries_; |
| break; |
| case kWebMIdMaxCLL: |
| dst = &max_content_light_level_; |
| break; |
| case kWebMIdMaxFALL: |
| dst = &max_frame_average_light_level_; |
| break; |
| default: |
| return true; |
| } |
| |
| DCHECK(dst); |
| if (*dst != -1) { |
| LOG(ERROR) << "Multiple values for id " << std::hex << id << " specified (" |
| << *dst << " and " << val << ")"; |
| return false; |
| } |
| |
| *dst = val; |
| return true; |
| } |
| |
| WebMColorMetadata WebMColourParser::GetWebMColorMetadata() const { |
| WebMColorMetadata color_metadata; |
| |
| if (bits_per_channel_ != -1) |
| color_metadata.BitsPerChannel = bits_per_channel_; |
| |
| if (chroma_subsampling_horz_ != -1) |
| color_metadata.ChromaSubsamplingHorz = chroma_subsampling_horz_; |
| if (chroma_subsampling_vert_ != -1) |
| color_metadata.ChromaSubsamplingVert = chroma_subsampling_vert_; |
| if (cb_subsampling_horz_ != -1) |
| color_metadata.CbSubsamplingHorz = cb_subsampling_horz_; |
| if (cb_subsampling_vert_ != -1) |
| color_metadata.CbSubsamplingVert = cb_subsampling_vert_; |
| if (chroma_siting_horz_ != -1) |
| color_metadata.ChromaSitingHorz = chroma_siting_horz_; |
| if (chroma_siting_vert_ != -1) |
| color_metadata.ChromaSitingVert = chroma_siting_vert_; |
| |
| gfx::ColorSpace::RangeID range_id = gfx::ColorSpace::RangeID::FULL; |
| switch (static_cast<Range>(range_)) { |
| case Range::kUnspecified: |
| range_id = gfx::ColorSpace::RangeID::FULL; |
| break; |
| case Range::kBroadcast: |
| range_id = gfx::ColorSpace::RangeID::LIMITED; |
| break; |
| case Range::kFull: |
| range_id = gfx::ColorSpace::RangeID::FULL; |
| break; |
| case Range::kDerived: |
| range_id = gfx::ColorSpace::RangeID::DERIVED; |
| break; |
| } |
| color_metadata.color_space = VideoColorSpace( |
| primaries_, transfer_characteristics_, matrix_coefficients_, range_id); |
| |
| if (max_content_light_level_ != -1) |
| color_metadata.hdr_metadata.max_content_light_level = |
| max_content_light_level_; |
| |
| if (max_frame_average_light_level_ != -1) |
| color_metadata.hdr_metadata.max_frame_average_light_level = |
| max_frame_average_light_level_; |
| |
| if (mastering_metadata_parsed_) |
| color_metadata.hdr_metadata.mastering_metadata = |
| mastering_metadata_parser_.GetMasteringMetadata(); |
| |
| return color_metadata; |
| } |
| |
| } // namespace media |