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/*
* 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.
*/
#include "modules/video_coding/svc/scalability_structure_test_helpers.h"
#include <stdint.h>
#include <bitset>
#include <cstddef>
#include <utility>
#include <vector>
#include "api/array_view.h"
#include "api/video/video_bitrate_allocation.h"
#include "common_video/generic_frame_descriptor/generic_frame_info.h"
#include "modules/video_coding/chain_diff_calculator.h"
#include "modules/video_coding/frame_dependencies_calculator.h"
#include "modules/video_coding/svc/scalable_video_controller.h"
#include "test/gtest.h"
namespace webrtc {
VideoBitrateAllocation EnableTemporalLayers(int s0, int s1, int s2) {
VideoBitrateAllocation bitrate;
for (int tid = 0; tid < s0; ++tid) {
bitrate.SetBitrate(0, tid, 1'000'000);
}
for (int tid = 0; tid < s1; ++tid) {
bitrate.SetBitrate(1, tid, 1'000'000);
}
for (int tid = 0; tid < s2; ++tid) {
bitrate.SetBitrate(2, tid, 1'000'000);
}
return bitrate;
}
void ScalabilityStructureWrapper::GenerateFrames(
int num_temporal_units,
std::vector<GenericFrameInfo>& frames) {
for (int i = 0; i < num_temporal_units; ++i) {
for (auto& layer_frame :
structure_controller_.NextFrameConfig(/*restart=*/false)) {
int64_t frame_id = ++frame_id_;
bool is_keyframe = layer_frame.IsKeyframe();
GenericFrameInfo frame_info =
structure_controller_.OnEncodeDone(layer_frame);
if (is_keyframe) {
chain_diff_calculator_.Reset(frame_info.part_of_chain);
}
frame_info.chain_diffs =
chain_diff_calculator_.From(frame_id, frame_info.part_of_chain);
for (int64_t base_frame_id : frame_deps_calculator_.FromBuffersUsage(
frame_id, frame_info.encoder_buffers)) {
frame_info.frame_diffs.push_back(frame_id - base_frame_id);
}
frames.push_back(std::move(frame_info));
}
}
}
bool ScalabilityStructureWrapper::FrameReferencesAreValid(
ArrayView<const GenericFrameInfo> frames) const {
bool valid = true;
// VP9 and AV1 supports up to 8 buffers. Expect no more buffers are not used.
std::bitset<8> buffer_contains_frame;
for (size_t i = 0; i < frames.size(); ++i) {
const GenericFrameInfo& frame = frames[i];
for (const CodecBufferUsage& buffer_usage : frame.encoder_buffers) {
if (buffer_usage.id < 0 || buffer_usage.id >= 8) {
ADD_FAILURE() << "Invalid buffer id " << buffer_usage.id
<< " for frame#" << i
<< ". Up to 8 buffers are supported.";
valid = false;
continue;
}
if (buffer_usage.referenced && !buffer_contains_frame[buffer_usage.id]) {
ADD_FAILURE() << "buffer " << buffer_usage.id << " for frame#" << i
<< " was reference before updated.";
valid = false;
}
if (buffer_usage.updated) {
buffer_contains_frame.set(buffer_usage.id);
}
}
for (int fdiff : frame.frame_diffs) {
if (fdiff <= 0 || static_cast<size_t>(fdiff) > i) {
ADD_FAILURE() << "Invalid frame diff " << fdiff << " for frame#" << i;
valid = false;
}
}
}
return valid;
}
} // namespace webrtc
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