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/*
* 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 <cstddef>
#include <cstdint>
#include <memory>
#include <vector>
#include "api/audio_codecs/opus/audio_decoder_multi_channel_opus.h"
#include "api/audio_codecs/opus/audio_decoder_multi_channel_opus_config.h"
#include "rtc_base/checks.h"
#include "test/fuzzers/audio_decoder_fuzzer.h"
namespace webrtc {
AudioDecoderMultiChannelOpusConfig MakeDecoderConfig(
int num_channels,
int num_streams,
int coupled_streams,
std::vector<unsigned char> channel_mapping) {
AudioDecoderMultiChannelOpusConfig config;
config.num_channels = num_channels;
config.num_streams = num_streams;
config.coupled_streams = coupled_streams;
config.channel_mapping = channel_mapping;
return config;
}
void FuzzOneInput(const uint8_t* data, size_t size) {
const std::vector<AudioDecoderMultiChannelOpusConfig> surround_configs = {
MakeDecoderConfig(1, 1, 0, {0}), // Mono
MakeDecoderConfig(2, 2, 0, {0, 0}), // Copy the first (of
// 2) decoded streams
// into both output
// channel 0 and output
// channel 1. Ignore
// the 2nd decoded
// stream.
MakeDecoderConfig(4, 2, 2, {0, 1, 2, 3}), // Quad.
MakeDecoderConfig(6, 4, 2, {0, 4, 1, 2, 3, 5}), // 5.1
MakeDecoderConfig(8, 5, 3, {0, 6, 1, 2, 3, 4, 5, 7}) // 7.1
};
const auto config = surround_configs[data[0] % surround_configs.size()];
RTC_CHECK(config.IsOk());
std::unique_ptr<AudioDecoder> dec =
AudioDecoderMultiChannelOpus::MakeAudioDecoder(config);
RTC_CHECK(dec);
const int kSampleRateHz = 48000;
const size_t kAllocatedOuputSizeSamples =
4 * kSampleRateHz / 10; // 4x100 ms, 4 times the size of the output array
// for the stereo Opus codec. It should be enough
// for 8 channels.
int16_t output[kAllocatedOuputSizeSamples];
FuzzAudioDecoder(DecoderFunctionType::kNormalDecode, data, size, dec.get(),
kSampleRateHz, sizeof(output), output);
}
} // namespace webrtc
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