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5f923cd | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | // Copyright 2025 The ODML Authors.
//
// 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.
#ifndef THIRD_PARTY_ODML_LITERT_LM_RUNTIME_COMPONENTS_PREPROCESSOR_BY_PASS_AUDIO_PREPROCESSOR_H_
#define THIRD_PARTY_ODML_LITERT_LM_RUNTIME_COMPONENTS_PREPROCESSOR_BY_PASS_AUDIO_PREPROCESSOR_H_
#include <memory>
#include <utility>
#include "absl/status/status.h" // from @com_google_absl
#include "absl/status/statusor.h" // from @com_google_absl
#include "litert/cc/litert_macros.h" // from @litert
#include "runtime/components/preprocessor/audio_preprocessor.h"
#include "runtime/engine/io_types.h"
#include "runtime/util/status_macros.h" // IWYU pragma: keep
namespace litert::lm {
// Audio preprocessor implementation that bypasses the preprocessing and returns
// the input audio directly.
class ByPassAudioPreprocessor : public AudioPreprocessor {
public:
static absl::StatusOr<std::unique_ptr<ByPassAudioPreprocessor>> Create(
const AudioPreprocessorConfig& config) {
return std::make_unique<ByPassAudioPreprocessor>();
}
absl::StatusOr<InputAudio> Preprocess(
const InputAudio& input_audio) override {
if (input_audio.IsTensorBuffer()) {
ASSIGN_OR_RETURN(auto processed_audio_tensor,
input_audio.GetPreprocessedAudioTensor());
LITERT_ASSIGN_OR_RETURN(auto processed_audio_tensor_with_reference,
processed_audio_tensor->Duplicate());
InputAudio processed_audio(
std::move(processed_audio_tensor_with_reference));
return processed_audio;
}
return absl::InvalidArgumentError("Input audio is not preprocessed.");
};
// No-op for bypass preprocessor.
void Reset() override {}
};
} // namespace litert::lm
#endif // THIRD_PARTY_ODML_LITERT_LM_RUNTIME_COMPONENTS_PREPROCESSOR_BY_PASS_AUDIO_PREPROCESSOR_H_
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