Method SequenceParser

dali/operators/reader/parser/sequence_parser.h:28–56

class SequenceParser : public Parser<TensorSequence> {
 public:
  explicit SequenceParser(const OpSpec& spec)
      : Parser<TensorSequence>(spec), image_type_(spec.GetArgument<DALIImageType>("image_type")) {
    EnforceMinimumNvimgcodecVersion();

    nvimgcodecInstanceCreateInfo_t instance_create_info{
        NVIMGCODEC_STRUCTURE_TYPE_INSTANCE_CREATE_INFO, sizeof(nvimgcodecInstanceCreateInfo_t),
        nullptr};

    const char* log_lvl_env = std::getenv("DALI_NVIMGCODEC_LOG_LEVEL");
    int log_lvl = log_lvl_env ? clamp(atoi(log_lvl_env), 1, 5) : 2;

    instance_create_info.load_extension_modules = 1;  // loads codecs extensions
    instance_create_info.load_builtin_modules = 1;  // loads parsers
    instance_create_info.extension_modules_path = nullptr;
    instance_create_info.create_debug_messenger = 1;
    instance_create_info.debug_messenger_desc = nullptr;
    instance_create_info.message_severity = imgcodec::verbosity_to_severity(log_lvl);
    instance_create_info.message_category = NVIMGCODEC_DEBUG_MESSAGE_CATEGORY_ALL;
    instance_ = imgcodec::NvImageCodecInstance::Create(&instance_create_info);

    exec_params_.device_id = NVIMGCODEC_DEVICE_CPU_ONLY;
    exec_params_.backends = &backend_;
    exec_params_.num_backends = 1;
    exec_params_.device_allocator = nullptr;
    exec_params_.pinned_allocator = nullptr;
    exec_params_.executor = nullptr;
    exec_params_.max_num_cpu_threads = 1;
    exec_params_.pre_init = 1;
  }

  void Parse(const TensorSequence& data, SampleWorkspace* ws) override;