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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /third_party/libwebrtc/modules/rtp_rtcp/source/active_decode_targets_helper.h | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/modules/rtp_rtcp/source/active_decode_targets_helper.h')
-rw-r--r-- | third_party/libwebrtc/modules/rtp_rtcp/source/active_decode_targets_helper.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/rtp_rtcp/source/active_decode_targets_helper.h b/third_party/libwebrtc/modules/rtp_rtcp/source/active_decode_targets_helper.h new file mode 100644 index 0000000000..13755e8d80 --- /dev/null +++ b/third_party/libwebrtc/modules/rtp_rtcp/source/active_decode_targets_helper.h @@ -0,0 +1,63 @@ +/* + * Copyright (c) 2020 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. + */ + +#ifndef MODULES_RTP_RTCP_SOURCE_ACTIVE_DECODE_TARGETS_HELPER_H_ +#define MODULES_RTP_RTCP_SOURCE_ACTIVE_DECODE_TARGETS_HELPER_H_ + +#include <stdint.h> + +#include <bitset> + +#include "absl/types/optional.h" +#include "api/array_view.h" + +namespace webrtc { + +// Helper class that decides when active_decode_target_bitmask should be written +// into the dependency descriptor rtp header extension. +// See: https://aomediacodec.github.io/av1-rtp-spec/#a44-switching +// This class is thread-compatible +class ActiveDecodeTargetsHelper { + public: + ActiveDecodeTargetsHelper() = default; + ActiveDecodeTargetsHelper(const ActiveDecodeTargetsHelper&) = delete; + ActiveDecodeTargetsHelper& operator=(const ActiveDecodeTargetsHelper&) = + delete; + ~ActiveDecodeTargetsHelper() = default; + + // Decides if active decode target bitmask should be attached to the frame + // that is about to be sent. + void OnFrame(rtc::ArrayView<const int> decode_target_protected_by_chain, + std::bitset<32> active_decode_targets, + bool is_keyframe, + int64_t frame_id, + rtc::ArrayView<const int> chain_diffs); + + // Returns active decode target to attach to the dependency descriptor. + absl::optional<uint32_t> ActiveDecodeTargetsBitmask() const { + if (unsent_on_chain_.none()) + return absl::nullopt; + return last_active_decode_targets_.to_ulong(); + } + + std::bitset<32> ActiveChainsBitmask() const { return last_active_chains_; } + + private: + // `unsent_on_chain_[i]` indicates last active decode + // target bitmask wasn't attached to a packet on the chain with id `i`. + std::bitset<32> unsent_on_chain_ = 0; + std::bitset<32> last_active_decode_targets_ = 0; + std::bitset<32> last_active_chains_ = 0; + int64_t last_frame_id_ = 0; +}; + +} // namespace webrtc + +#endif // MODULES_RTP_RTCP_SOURCE_ACTIVE_DECODE_TARGETS_HELPER_H_ |