AudioWaveform.h

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#pragma once
#include "common/Export.h"
 
 
#include "audio/editing/AudioEditingTypes.h"
 
#include <string>
#include <vector>
 
namespace eve::audio_editing {
 
struct EditorAudioPcm {
    int sampleRate = 0;
    int channels = 0;
    std::vector<float> samples;
};
 
struct AudioWaveformRequest {
    std::string asset;
    Revision sourceRevision = 0;
    int pixelWidth = 0;
    double loopStart = 0.0;
    double loopEnd = 0.0;
};
 
struct AudioWaveformBucket {
    double startTime = 0.0;
    double endTime = 0.0;
    float minimum = 0.0F;
    float maximum = 0.0F;
    float rms = 0.0F;
};
 
struct AudioWaveformResult {
    EditorStatus status = EditorStatus::Failed;
    std::string asset;
    Revision sourceRevision = 0;
    int sampleRate = 0;
    int channels = 0;
    double duration = 0.0;
    int loopStartBucket = -1;
    int loopEndBucket = -1;
    double loopSeamDelta = 0.0;
    std::vector<std::vector<AudioWaveformBucket>> envelopes;
    std::vector<EditorDiagnostic> diagnostics;
};
 
class EVENGINE_API_BACKENDS AudioWaveformService {
public:
    AudioWaveformResult generate(const AudioWaveformRequest& request, const EditorAudioPcm& pcm,
                                 int maxPixels = 16384, std::size_t maxSamples = 100000000) const;
};
 
}  // namespace eve::audio_editing