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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/video_coding/utility/decoded_frames_history.cc | |
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/video_coding/utility/decoded_frames_history.cc')
-rw-r--r-- | third_party/libwebrtc/modules/video_coding/utility/decoded_frames_history.cc | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/video_coding/utility/decoded_frames_history.cc b/third_party/libwebrtc/modules/video_coding/utility/decoded_frames_history.cc new file mode 100644 index 0000000000..1138aa8448 --- /dev/null +++ b/third_party/libwebrtc/modules/video_coding/utility/decoded_frames_history.cc @@ -0,0 +1,92 @@ +/* + * Copyright (c) 2019 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 "modules/video_coding/utility/decoded_frames_history.h" + +#include <algorithm> + +#include "rtc_base/checks.h" +#include "rtc_base/logging.h" + +namespace webrtc { +namespace video_coding { + +DecodedFramesHistory::DecodedFramesHistory(size_t window_size) + : buffer_(window_size) {} + +DecodedFramesHistory::~DecodedFramesHistory() = default; + +void DecodedFramesHistory::InsertDecoded(int64_t frame_id, uint32_t timestamp) { + last_decoded_frame_ = frame_id; + last_decoded_frame_timestamp_ = timestamp; + int new_index = FrameIdToIndex(frame_id); + + RTC_DCHECK(last_frame_id_ < frame_id); + + // Clears expired values from the cyclic buffer_. + if (last_frame_id_) { + int64_t id_jump = frame_id - *last_frame_id_; + int last_index = FrameIdToIndex(*last_frame_id_); + + if (id_jump >= static_cast<int64_t>(buffer_.size())) { + std::fill(buffer_.begin(), buffer_.end(), false); + } else if (new_index > last_index) { + std::fill(buffer_.begin() + last_index + 1, buffer_.begin() + new_index, + false); + } else { + std::fill(buffer_.begin() + last_index + 1, buffer_.end(), false); + std::fill(buffer_.begin(), buffer_.begin() + new_index, false); + } + } + + buffer_[new_index] = true; + last_frame_id_ = frame_id; +} + +bool DecodedFramesHistory::WasDecoded(int64_t frame_id) const { + if (!last_frame_id_) + return false; + + // Reference to the picture_id out of the stored should happen. + if (frame_id <= *last_frame_id_ - static_cast<int64_t>(buffer_.size())) { + RTC_LOG(LS_WARNING) << "Referencing a frame out of the window. " + "Assuming it was undecoded to avoid artifacts."; + return false; + } + + if (frame_id > last_frame_id_) + return false; + + return buffer_[FrameIdToIndex(frame_id)]; +} + +void DecodedFramesHistory::Clear() { + last_decoded_frame_timestamp_.reset(); + last_decoded_frame_.reset(); + std::fill(buffer_.begin(), buffer_.end(), false); + last_frame_id_.reset(); +} + +absl::optional<int64_t> DecodedFramesHistory::GetLastDecodedFrameId() const { + return last_decoded_frame_; +} + +absl::optional<uint32_t> DecodedFramesHistory::GetLastDecodedFrameTimestamp() + const { + return last_decoded_frame_timestamp_; +} + +int DecodedFramesHistory::FrameIdToIndex(int64_t frame_id) const { + int m = frame_id % buffer_.size(); + return m >= 0 ? m : m + buffer_.size(); +} + +} // namespace video_coding +} // namespace webrtc |