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c1cc6a36b2
as required by https://aomediacodec.github.io/av1-rtp-spec/#72-sdp-parameters Also unify usage of profile fmtp parameter. Most notably this causes SDP answers to include the default values. These default values correspond to libaom's default values for AV1E_SET_TARGET_SEQ_LEVEL_IDX, AV1E_SET_TIER_MASK as used in https://source.chromium.org/chromium/chromium/src/+/main:third_party/libaom/source/libaom/aom/aomcx.h and g_profile in aom_codec_enc_cfg https://source.chromium.org/chromium/chromium/src/+/main:third_party/libaom/source/libaom/aom/aom_encoder.h;l=415;drc=b58207f5aecc39db7d3da766e7d171e5d2c3598e Note: AV1 is inconsistently cased in variable/struct/method/class names. The canonical casing should probably be "Av1" since it is an acronym standing for "AOMedia Video 1". BUG=webrtc:15703 Change-Id: I11864b7666fea906cd1a0759c7ad45997beab90e Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/331360 Reviewed-by: Sergey Silkin <ssilkin@webrtc.org> Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Philipp Hancke <phancke@microsoft.com> Cr-Commit-Position: refs/heads/main@{#41654}
54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
/*
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* Copyright (c) 2022 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_VIDEO_CODECS_AV1_PROFILE_H_
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#define API_VIDEO_CODECS_AV1_PROFILE_H_
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#include <string>
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#include "absl/strings/string_view.h"
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#include "absl/types/optional.h"
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#include "api/video_codecs/sdp_video_format.h"
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#include "rtc_base/system/rtc_export.h"
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namespace webrtc {
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// Profiles can be found at:
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// https://aomedia.org/av1/specification/annex-a/#profiles
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// The enum values match the number specified in the SDP.
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enum class AV1Profile {
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kProfile0 = 0,
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kProfile1 = 1,
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kProfile2 = 2,
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};
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// Helper function which converts an AV1Profile to std::string. Returns "0" if
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// an unknown value is passed in.
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RTC_EXPORT absl::string_view AV1ProfileToString(AV1Profile profile);
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// Helper function which converts a std::string to AV1Profile. Returns null if
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// |profile| is not a valid profile string.
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absl::optional<AV1Profile> StringToAV1Profile(absl::string_view profile);
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// Parses an SDP key-value map of format parameters to retrive an AV1 profile.
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// Returns an AV1Profile if one has been specified, `kProfile0` if no profile is
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// specified and an empty value if the profile key is present but contains an
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// invalid value.
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RTC_EXPORT absl::optional<AV1Profile> ParseSdpForAV1Profile(
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const CodecParameterMap& params);
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// Returns true if the parameters have the same AV1 profile or neither contains
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// an AV1 profile, otherwise false.
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bool AV1IsSameProfile(const CodecParameterMap& params1,
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const CodecParameterMap& params2);
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} // namespace webrtc
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#endif // API_VIDEO_CODECS_AV1_PROFILE_H_
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