1 files changed, 56 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/fuzzers/audio_decoder_pcm16b_fuzzer.cc b/third_party/libwebrtc/test/fuzzers/audio_decoder_pcm16b_fuzzer.cc
new file mode 100644
index 0000000000..6e5d6e2190
--- /dev/null
+++ b/third_party/libwebrtc/test/fuzzers/audio_decoder_pcm16b_fuzzer.cc
@@ -0,0 +1,56 @@
+/*
+ *  Copyright (c) 2022 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 <memory>
+
+#include "modules/audio_coding/codecs/pcm16b/audio_decoder_pcm16b.h"
+#include "test/fuzzers/audio_decoder_fuzzer.h"
+
+namespace webrtc {
+void FuzzOneInput(const uint8_t* data, size_t size) {
+  if (size > 10000 || size < 2) {
+    return;
+  }
+
+  int sample_rate_hz;
+  switch (data[0] % 4) {
+    case 0:
+      sample_rate_hz = 8000;
+      break;
+    case 1:
+      sample_rate_hz = 16000;
+      break;
+    case 2:
+      sample_rate_hz = 32000;
+      break;
+    case 3:
+      sample_rate_hz = 48000;
+      break;
+    default:
+      RTC_DCHECK_NOTREACHED();
+      return;
+  }
+  const size_t num_channels = data[1] % 16 + 1;
+
+  // Two first bytes of the data are used. Move forward.
+  data += 2;
+  size -= 2;
+
+  AudioDecoderPcm16B dec(sample_rate_hz, num_channels);
+  // Allocate a maximum output size of 100 ms.
+  const size_t allocated_ouput_size_samples =
+      sample_rate_hz * num_channels / 10;
+  std::unique_ptr<int16_t[]> output =
+      std::make_unique<int16_t[]>(allocated_ouput_size_samples);
+  FuzzAudioDecoder(
+      DecoderFunctionType::kNormalDecode, data, size, &dec, sample_rate_hz,
+      allocated_ouput_size_samples * sizeof(int16_t), output.get());
+}
+}  // namespace webrtc