offline-source-separation.h
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// sherpa-onnx/csrc/offline-source-separation.h
//
// Copyright (c) 2025 Xiaomi Corporation
#ifndef SHERPA_ONNX_CSRC_OFFLINE_SOURCE_SEPARATION_H_
#define SHERPA_ONNX_CSRC_OFFLINE_SOURCE_SEPARATION_H_
#include <memory>
#include <string>
#include <vector>
#include "sherpa-onnx/csrc/offline-source-separation-model-config.h"
#include "sherpa-onnx/csrc/parse-options.h"
namespace sherpa_onnx {
struct OfflineSourceSeparationConfig {
OfflineSourceSeparationModelConfig model;
OfflineSourceSeparationConfig() = default;
explicit OfflineSourceSeparationConfig(
const OfflineSourceSeparationModelConfig &model)
: model(model) {}
void Register(ParseOptions *po);
bool Validate() const;
std::string ToString() const;
};
struct MultiChannelSamples {
// data[i] is for the i-th channel
//
// each sample is in the range [-1, 1]
std::vector<std::vector<float>> data;
};
struct OfflineSourceSeparationInput {
MultiChannelSamples samples;
int32_t sample_rate;
};
struct OfflineSourceSeparationOutput {
std::vector<MultiChannelSamples> stems;
int32_t sample_rate;
};
class OfflineSourceSeparationImpl;
class OfflineSourceSeparation {
public:
~OfflineSourceSeparation();
explicit OfflineSourceSeparation(const OfflineSourceSeparationConfig &config);
template <typename Manager>
OfflineSourceSeparation(Manager *mgr,
const OfflineSourceSeparationConfig &config);
OfflineSourceSeparationOutput Process(
const OfflineSourceSeparationInput &input) const;
int32_t GetOutputSampleRate() const;
// e.g., it is 2 for 2stems from spleeter
int32_t GetNumberOfStems() const;
private:
std::unique_ptr<OfflineSourceSeparationImpl> impl_;
};
} // namespace sherpa_onnx
#endif // SHERPA_ONNX_CSRC_OFFLINE_SOURCE_SEPARATION_H_