From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- .../api/video_codecs/h265_profile_tier_level.cc | 248 +++++++++++++++++++++ 1 file changed, 248 insertions(+) create mode 100644 third_party/libwebrtc/api/video_codecs/h265_profile_tier_level.cc (limited to 'third_party/libwebrtc/api/video_codecs/h265_profile_tier_level.cc') diff --git a/third_party/libwebrtc/api/video_codecs/h265_profile_tier_level.cc b/third_party/libwebrtc/api/video_codecs/h265_profile_tier_level.cc new file mode 100644 index 0000000000..f5b376e287 --- /dev/null +++ b/third_party/libwebrtc/api/video_codecs/h265_profile_tier_level.cc @@ -0,0 +1,248 @@ +/* + * Copyright (c) 2023 The WebRTC project authors. All Rights Reserved. + * + * Use of this source code is governed by a BSD-style license + * that can be found in the LICENSE file in the root of the source + * tree. An additional intellectual property rights grant can be found + * in the file PATENTS. All contributing project authors may + * be found in the AUTHORS file in the root of the source tree. + */ + +#include "api/video_codecs/h265_profile_tier_level.h" + +#include + +#include "rtc_base/string_to_number.h" + +namespace webrtc { + +namespace { + +const char kH265FmtpProfile[] = "profile-id"; +const char kH265FmtpTier[] = "tier-flag"; +const char kH265FmtpLevel[] = "level-id"; + +} // anonymous namespace + +// Annex A of https://www.itu.int/rec/T-REC-H.265 (08/21), section A.3. +absl::optional StringToH265Profile(const std::string& profile) { + absl::optional i = rtc::StringToNumber(profile); + if (!i.has_value()) { + return absl::nullopt; + } + + switch (i.value()) { + case 1: + return H265Profile::kProfileMain; + case 2: + return H265Profile::kProfileMain10; + case 3: + return H265Profile::kProfileMainStill; + case 4: + return H265Profile::kProfileRangeExtensions; + case 5: + return H265Profile::kProfileHighThroughput; + case 6: + return H265Profile::kProfileMultiviewMain; + case 7: + return H265Profile::kProfileScalableMain; + case 8: + return H265Profile::kProfile3dMain; + case 9: + return H265Profile::kProfileScreenContentCoding; + case 10: + return H265Profile::kProfileScalableRangeExtensions; + case 11: + return H265Profile::kProfileHighThroughputScreenContentCoding; + default: + return absl::nullopt; + } +} + +// Annex A of https://www.itu.int/rec/T-REC-H.265 (08/21), section A.4, +// tiers and levels. +absl::optional StringToH265Tier(const std::string& tier) { + absl::optional i = rtc::StringToNumber(tier); + if (!i.has_value()) { + return absl::nullopt; + } + + switch (i.value()) { + case 0: + return H265Tier::kTier0; + case 1: + return H265Tier::kTier1; + default: + return absl::nullopt; + } +} + +absl::optional StringToH265Level(const std::string& level) { + const absl::optional i = rtc::StringToNumber(level); + if (!i.has_value()) + return absl::nullopt; + + switch (i.value()) { + case 30: + return H265Level::kLevel1; + case 60: + return H265Level::kLevel2; + case 63: + return H265Level::kLevel2_1; + case 90: + return H265Level::kLevel3; + case 93: + return H265Level::kLevel3_1; + case 120: + return H265Level::kLevel4; + case 123: + return H265Level::kLevel4_1; + case 150: + return H265Level::kLevel5; + case 153: + return H265Level::kLevel5_1; + case 156: + return H265Level::kLevel5_2; + case 180: + return H265Level::kLevel6; + case 183: + return H265Level::kLevel6_1; + case 186: + return H265Level::kLevel6_2; + default: + return absl::nullopt; + } +} + +std::string H265ProfileToString(H265Profile profile) { + switch (profile) { + case H265Profile::kProfileMain: + return "1"; + case H265Profile::kProfileMain10: + return "2"; + case H265Profile::kProfileMainStill: + return "3"; + case H265Profile::kProfileRangeExtensions: + return "4"; + case H265Profile::kProfileHighThroughput: + return "5"; + case H265Profile::kProfileMultiviewMain: + return "6"; + case H265Profile::kProfileScalableMain: + return "7"; + case H265Profile::kProfile3dMain: + return "8"; + case H265Profile::kProfileScreenContentCoding: + return "9"; + case H265Profile::kProfileScalableRangeExtensions: + return "10"; + case H265Profile::kProfileHighThroughputScreenContentCoding: + return "11"; + } +} + +std::string H265TierToString(H265Tier tier) { + switch (tier) { + case H265Tier::kTier0: + return "0"; + case H265Tier::kTier1: + return "1"; + } +} + +std::string H265LevelToString(H265Level level) { + switch (level) { + case H265Level::kLevel1: + return "30"; + case H265Level::kLevel2: + return "60"; + case H265Level::kLevel2_1: + return "63"; + case H265Level::kLevel3: + return "90"; + case H265Level::kLevel3_1: + return "93"; + case H265Level::kLevel4: + return "120"; + case H265Level::kLevel4_1: + return "123"; + case H265Level::kLevel5: + return "150"; + case H265Level::kLevel5_1: + return "153"; + case H265Level::kLevel5_2: + return "156"; + case H265Level::kLevel6: + return "180"; + case H265Level::kLevel6_1: + return "183"; + case H265Level::kLevel6_2: + return "186"; + } +} + +absl::optional ParseSdpForH265ProfileTierLevel( + const SdpVideoFormat::Parameters& params) { + static const H265ProfileTierLevel kDefaultProfileTierLevel( + H265Profile::kProfileMain, H265Tier::kTier0, H265Level::kLevel3_1); + bool profile_tier_level_specified = false; + + absl::optional profile; + const auto profile_it = params.find(kH265FmtpProfile); + if (profile_it != params.end()) { + profile_tier_level_specified = true; + const std::string& profile_str = profile_it->second; + profile = StringToH265Profile(profile_str); + if (!profile) { + return absl::nullopt; + } + } else { + profile = H265Profile::kProfileMain; + } + absl::optional tier; + const auto tier_it = params.find(kH265FmtpTier); + if (tier_it != params.end()) { + profile_tier_level_specified = true; + const std::string& tier_str = tier_it->second; + tier = StringToH265Tier(tier_str); + if (!tier) { + return absl::nullopt; + } + } else { + tier = H265Tier::kTier0; + } + absl::optional level; + const auto level_it = params.find(kH265FmtpLevel); + if (level_it != params.end()) { + profile_tier_level_specified = true; + const std::string& level_str = level_it->second; + level = StringToH265Level(level_str); + if (!level) { + return absl::nullopt; + } + } else { + level = H265Level::kLevel3_1; + } + + // Spec Table A.9, level 1 to level 3.1 does not allow high tiers. + if (level <= H265Level::kLevel3_1 && tier == H265Tier::kTier1) { + return absl::nullopt; + } + + return !profile_tier_level_specified + ? kDefaultProfileTierLevel + : H265ProfileTierLevel(profile.value(), tier.value(), + level.value()); +} + +bool H265IsSameProfileTierLevel(const SdpVideoFormat::Parameters& params1, + const SdpVideoFormat::Parameters& params2) { + const absl::optional ptl1 = + ParseSdpForH265ProfileTierLevel(params1); + const absl::optional ptl2 = + ParseSdpForH265ProfileTierLevel(params2); + return ptl1 && ptl2 && ptl1->profile == ptl2->profile && + ptl1->tier == ptl2->tier && ptl1->level == ptl2->level; +} + +} // namespace webrtc -- cgit v1.2.3