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#pragma once
#include "defs.h"
namespace ffmpeg {
/**
* Class transcode audio frames from one format into another
*/
class AudioSampler : public MediaSampler {
public:
explicit AudioSampler(void* logCtx);
~AudioSampler() override;
// MediaSampler overrides
bool init(const SamplerParameters& params) override;
int sample(const ByteStorage* in, ByteStorage* out) override;
void shutdown() override;
int sample(AVFrame* frame, ByteStorage* out);
private:
// close resources
void cleanUp();
// helper functions for rescaling, cropping, etc.
int numOutputSamples(int inSamples) const;
int sample(
const uint8_t* inPlanes[],
int inNumSamples,
ByteStorage* out,
int outNumSamples);
private:
SwrContext* swrContext_{nullptr};
void* logCtx_{nullptr};
};
} // namespace ffmpeg
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