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/*
* Copyright (c) 2021 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 "api/array_view.h"
#include "api/video/encoded_frame.h"
#include "api/video/frame_buffer.h"
#include "rtc_base/numerics/sequence_number_unwrapper.h"
#include "test/fuzzers/fuzz_data_helper.h"
#include "test/scoped_key_value_config.h"
namespace webrtc {
namespace {
class FuzzyFrameObject : public EncodedFrame {
public:
int64_t ReceivedTime() const override { return 0; }
int64_t RenderTime() const override { return 0; }
};
constexpr int kFrameIdLength = 1 << 15;
} // namespace
void FuzzOneInput(const uint8_t* data, size_t size) {
if (size > 10000) {
return;
}
test::ScopedKeyValueConfig field_trials;
FrameBuffer buffer(/*max_frame_slots=*/100, /*max_decode_history=*/1000,
field_trials);
test::FuzzDataHelper helper(rtc::MakeArrayView(data, size));
SeqNumUnwrapper<uint16_t, kFrameIdLength> unwrapper;
while (helper.BytesLeft() > 0) {
int action = helper.ReadOrDefaultValue<uint8_t>(0) % 6;
switch (action) {
case 0: {
buffer.LastContinuousFrameId();
break;
}
case 1: {
buffer.LastContinuousTemporalUnitFrameId();
break;
}
case 2: {
buffer.DecodableTemporalUnitsInfo();
break;
}
case 3: {
buffer.ExtractNextDecodableTemporalUnit();
break;
}
case 4: {
buffer.DropNextDecodableTemporalUnit();
break;
}
case 5: {
auto frame = std::make_unique<FuzzyFrameObject>();
frame->SetTimestamp(helper.ReadOrDefaultValue<uint32_t>(0));
int64_t wire_id =
helper.ReadOrDefaultValue<uint16_t>(0) & (kFrameIdLength - 1);
frame->SetId(unwrapper.Unwrap(wire_id));
frame->is_last_spatial_layer = helper.ReadOrDefaultValue<bool>(false);
frame->num_references = helper.ReadOrDefaultValue<uint8_t>(0) %
EncodedFrame::kMaxFrameReferences;
for (uint8_t i = 0; i < frame->num_references; ++i) {
frame->references[i] = helper.ReadOrDefaultValue<int64_t>(0);
}
buffer.InsertFrame(std::move(frame));
break;
}
}
}
}
} // namespace webrtc
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