Function parse_audio_chunk_mode

src/framework/audio/chunking.cpp:123–139

    if (!valid_merge_span(keep_span) ||
        keep_span.start_sample < source_span.start_sample ||
        keep_span.end_sample > source_span.end_sample) {
        throw std::runtime_error(std::string("Audio chunker ") + label + " merge requires keep span inside source span");
    }
}

}  // namespace

std::vector<AudioChunkSpan> plan_audio_chunks(int64_t input_samples, const AudioChunkSpec & spec) {
    require_positive(input_samples, "input samples");
    require_positive(spec.chunk_samples, "chunk samples");
    require_positive(spec.hop_samples, "hop samples");
    if (spec.hop_samples > spec.chunk_samples) {
        throw std::runtime_error("Audio chunker hop_samples must be <= chunk_samples");
    }

    std::vector<AudioChunkSpan> spans;
    int64_t start = 0;
    int64_t index = 0;
    while (start < input_samples) {
        const int64_t valid = std::min(spec.chunk_samples, input_samples - start);