chromium/media/gpu/vp9_svc_layers.cc

// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/40285824): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

#include "media/gpu/vp9_svc_layers.h"

#include "base/logging.h"

namespace media {

namespace {

constexpr static size_t kMaxNumUsedRefFramesEachSpatialLayer = …;
static_assert …;
constexpr static size_t kMaxNumUsedReferenceFrames = …;
static_assert …;

enum FrameFlags : uint8_t { … };

struct FrameConfig { … };

FrameConfig GetFrameConfig(size_t num_temporal_layers, size_t frame_num) { … }
}  // namespace

VP9SVCLayers::Config::Config(
    const std::vector<gfx::Size>& spatial_layer_resolutions,
    size_t begin_active_layer,
    size_t end_active_layer,
    size_t num_temporal_layers,
    SVCInterLayerPredMode inter_layer_pred)
    : … { … }

VP9SVCLayers::Config::~Config() = default;
VP9SVCLayers::Config::Config(const Config&) = default;
VP9SVCLayers::PictureParam::PictureParam() = default;
VP9SVCLayers::PictureParam::~PictureParam() = default;
VP9SVCLayers::PictureParam::PictureParam(const PictureParam&) = default;

VP9SVCLayers::VP9SVCLayers(const Config& config) : … { … }

void VP9SVCLayers::Reset() { … }

void VP9SVCLayers::PostEncode(uint8_t refresh_frame_flags) { … }

bool VP9SVCLayers::IsKeyFrame() const { … }

void VP9SVCLayers::GetPictureParamAndMetadata(PictureParam& picture_param,
                                              Vp9Metadata& metadata) const { … }

void VP9SVCLayers::FillMetadataForFirstFrame(
    Vp9Metadata& metadata,
    bool& key_frame,
    uint8_t& refresh_frame_flags,
    std::vector<uint8_t>& reference_frame_indices) const { … }

void VP9SVCLayers::FillMetadataForNonFirstFrame(
    Vp9Metadata& metadata,
    uint8_t& refresh_frame_flags,
    std::vector<uint8_t>& reference_frame_indices) const { … }
}  // namespace media