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/*
* Copyright (C) 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <fuzzer/FuzzedDataProvider.h>
#include "include/lc3.h"
void TestEncoder(FuzzedDataProvider& fdp) {
enum lc3_pcm_format pcm_format =
fdp.PickValueInArray({LC3_PCM_FORMAT_S16, LC3_PCM_FORMAT_S24});
int dt_us = fdp.PickValueInArray({10000, 7500});
int sr_hz =
fdp.PickValueInArray({8000, 16000, 24000, 32000, /*44100,*/ 48000});
unsigned enc_size = lc3_encoder_size(dt_us, sr_hz);
uint16_t output_byte_count = fdp.ConsumeIntegralInRange(20, 400);
uint16_t num_frames = lc3_frame_samples(dt_us, sr_hz);
uint8_t bytes_per_frame = (pcm_format == LC3_PCM_FORMAT_S16 ? 2 : 4);
if (fdp.remaining_bytes() < num_frames * bytes_per_frame) {
return;
}
std::vector<uint32_t> input_frames(
num_frames / (pcm_format == LC3_PCM_FORMAT_S16 ? 2 : 1));
fdp.ConsumeData(input_frames.data(), num_frames * bytes_per_frame);
void* lc3_encoder_mem = nullptr;
lc3_encoder_mem = malloc(enc_size);
lc3_encoder_t lc3_encoder =
lc3_setup_encoder(dt_us, sr_hz, 0, lc3_encoder_mem);
std::vector<uint8_t> output(output_byte_count);
lc3_encode(lc3_encoder, pcm_format, (const int16_t*)input_frames.data(), 1,
output.size(), output.data());
free(lc3_encoder_mem);
lc3_encoder_mem = nullptr;
return;
}
void TestDecoder(FuzzedDataProvider& fdp) {
enum lc3_pcm_format pcm_format =
fdp.PickValueInArray({LC3_PCM_FORMAT_S16, LC3_PCM_FORMAT_S24});
int dt_us = fdp.PickValueInArray({10000, 7500});
int sr_hz =
fdp.PickValueInArray({8000, 16000, 24000, 32000, /*44100,*/ 48000});
unsigned dec_size = lc3_decoder_size(dt_us, sr_hz);
uint16_t input_byte_count = fdp.ConsumeIntegralInRange(20, 400);
uint16_t num_frames = lc3_frame_samples(dt_us, sr_hz);
if (fdp.remaining_bytes() < input_byte_count) {
return;
}
std::vector<uint8_t> input(input_byte_count);
fdp.ConsumeData(input.data(), input.size());
void* lc3_decoder_mem = nullptr;
lc3_decoder_mem = malloc(dec_size);
lc3_decoder_t lc3_decoder =
lc3_setup_decoder(dt_us, sr_hz, 0, lc3_decoder_mem);
std::vector<uint32_t> output(num_frames /
(pcm_format == LC3_PCM_FORMAT_S16 ? 2 : 1));
lc3_decode(lc3_decoder, input.data(), input.size(), pcm_format,
(int16_t*)output.data(), 1);
/* Empty input performs PLC (packet loss concealment) */
lc3_decode(lc3_decoder, nullptr, 0, pcm_format, (int16_t*)output.data(), 1);
free(lc3_decoder_mem);
lc3_decoder_mem = nullptr;
return;
}
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
FuzzedDataProvider fdp(data, size);
TestEncoder(fdp);
TestDecoder(fdp);
return 0;
}
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