blob: 7cbe1f5cfce8feadbc3393fd46b354be3ea6db68 [file] [log] [blame]
* 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 <stdint.h>
#include <bitset>
#include <vector>
#include "absl/types/optional.h"
#include "api/video/encoded_frame.h"
namespace webrtc {
namespace video_coding {
class DecodedFramesHistory {
// window_size - how much frames back to the past are actually remembered.
explicit DecodedFramesHistory(size_t window_size);
// Called for each decoded frame. Assumes picture id's are non-decreasing.
void InsertDecoded(const VideoLayerFrameId& frameid, uint32_t timestamp);
// Query if the following (picture_id, spatial_id) pair was inserted before.
// Should be at most less by window_size-1 than the last inserted picture id.
bool WasDecoded(const VideoLayerFrameId& frameid);
void Clear();
absl::optional<VideoLayerFrameId> GetLastDecodedFrameId();
absl::optional<uint32_t> GetLastDecodedFrameTimestamp();
struct LayerHistory {
// Cyclic bitset buffer. Stores last known |window_size| bits.
std::vector<bool> buffer;
absl::optional<int64_t> last_picture_id;
int PictureIdToIndex(int64_t frame_id) const;
const int window_size_;
std::vector<LayerHistory> layers_;
absl::optional<VideoLayerFrameId> last_decoded_frame_;
absl::optional<uint32_t> last_decoded_frame_timestamp_;
} // namespace video_coding
} // namespace webrtc