tflread::Reader Class Reference

Loads TF lite file and provides helpers to access attributes. More...

#include <Read.h>

Public Member Functions
	Reader (const tflite::Model *model)
	Reader (const tflite::Model *model, const std::vector< char > *rawdata)
	Reader ()=delete
uint32_t	version () const
const std::vector< const tflite::OperatorCode * > &	opcodes ()
const TFliteBuffers_t *	buffers ()
const TFliteTensors_t *	tensors ()
const TFliteOperators_t *	operators ()
const std::vector< int32_t > &	inputs () const
const std::vector< int32_t > &	outputs () const
const TFliteMetadata_t *	metadata () const
const TFliteSignatureDef_t *	signaturedefs () const
uint32_t	num_subgraph () const
size_t	buffer_info (uint32_t buf_idx, const uint8_t **buff_data)
size_t	buffer_info (uint32_t buf_idx, const uint8_t **buff_data, bool &ext_offset)
tflite::BuiltinOperator	builtin_code (const tflite::Operator *op) const
std::string	opcode_name (const tflite::Operator *op) const
bool	select_subgraph (uint32_t subgraph)
const std::string &	subgraph_name (void) const
uint32_t	subgraph_index (void) const

Detailed Description

Loads TF lite file and provides helpers to access attributes.

Definition at line 42 of file Read.h.

Constructor & Destructor Documentation

Reader() [1/3]

tflread::Reader::Reader

(

const tflite::Model *

model

)

Definition at line 28 of file Read.cpp.

{
  _version = model->version();
  _subgraphs = model->subgraphs();
  _buffers = model->buffers();
  _metadata = model->metadata();
  _signaturedefs = model->signature_defs();
 
  auto opcodes = model->operator_codes();
  for (const ::tflite::OperatorCode *opcode : *opcodes)
  {
    _op_codes.push_back(opcode);
  }
}

References opcodes().

Reader() [2/3]

tflread::Reader::Reader	(	const tflite::Model *	model,
		const std::vector< char > *	rawdata
	)

Definition at line 43 of file Read.cpp.

{
  _rawdata = rawdata;
 
  _version = model->version();
  _subgraphs = model->subgraphs();
  _buffers = model->buffers();
  _metadata = model->metadata();
  _signaturedefs = model->signature_defs();
 
  auto opcodes = model->operator_codes();
  for (const ::tflite::OperatorCode *opcode : *opcodes)
  {
    _op_codes.push_back(opcode);
  }
}

References opcodes().

Reader() [3/3]

tflread::Reader::Reader ( )

delete

Member Function Documentation

buffer_info() [1/2]

size_t tflread::Reader::buffer_info	(	uint32_t	buf_idx,
		const uint8_t **	buff_data
	)

Definition at line 60 of file Read.cpp.

{
  *buff_data = nullptr;
 
  if (buf_idx == 0)
    return 0;
 
  if (auto *buffer = (*_buffers)[buf_idx])
  {
    if (auto *array = buffer->data())
    {
      if (size_t size = array->size())
      {
        *buff_data = reinterpret_cast<const uint8_t *>(array->data());
        return size;
      }
    }
  }
 
  return 0;
}

References size.

Referenced by tfldump::dump_model().

buffer_info() [2/2]

size_t tflread::Reader::buffer_info	(	uint32_t	buf_idx,
		const uint8_t **	buff_data,
		bool &	ext_offset
	)

Definition at line 82 of file Read.cpp.

{
  *buff_data = nullptr;
  ext_offset = false;
 
  if (buf_idx == 0)
    return 0;
 
  if (auto *buffer = (*_buffers)[buf_idx])
  {
    auto buffer_offset = buffer->offset();
    if (buffer->offset() > 1)
    {
      assert(_rawdata); // make debug break for invalid case
      if (_rawdata == nullptr)
        return 0;
 
      ext_offset = true;
      *buff_data = reinterpret_cast<const uint8_t *>(&_rawdata->at(buffer_offset));
      return buffer->size();
    }
    else if (auto *array = buffer->data())
    {
      if (size_t size = array->size())
      {
        *buff_data = reinterpret_cast<const uint8_t *>(array->data());
        return size;
      }
    }
    else
    {
      if (buffer->offset() == 1 && buffer->size() == 1)
      {
        std::cerr << "Buffer " << buf_idx << " has invalid offset/size." << std::endl;
      }
    }
  }
 
  return 0;
}

References size.

buffers()

const TFliteBuffers_t * tflread::Reader::buffers ( )

inline

Definition at line 62 of file Read.h.

{ return _buffers; }

Referenced by tfldump::dump_model().

builtin_code()

tflite::BuiltinOperator tflread::Reader::builtin_code

(

const tflite::Operator *

op

)

const

Definition at line 123 of file Read.cpp.

{
  uint32_t index = op->opcode_index();
  assert(index < _op_codes.size());
  const tflite::OperatorCode *opcode = _op_codes.at(index);
 
  return mio::tflite::builtin_code_neutral(opcode);
}

References mio::tflite::builtin_code_neutral().

Referenced by tfldump::dump_sub_graph().

inputs()

const std::vector< int32_t > & tflread::Reader::inputs ( ) const

inline

Definition at line 65 of file Read.h.

{ return _inputs; }

Referenced by onert.experimental.train.dataloader.DataLoader::__init__(), tfldump::dump_sub_graph(), validate_onnx2circle.OnnxRunner::feed_random_inputs(), onert.common.basesession.BaseSession::set_inputs(), and onert.experimental.train.dataloader.DataLoader::split().

metadata()

const TFliteMetadata_t * tflread::Reader::metadata ( ) const

inline

Definition at line 67 of file Read.h.

{ return _metadata; }

Referenced by tfldump::dump_model().

num_subgraph()

uint32_t tflread::Reader::num_subgraph ( ) const

inline

Definition at line 70 of file Read.h.

{ return _subgraphs->size(); }

References flatbuffers::Vector< T, SizeT >::size().

Referenced by tfldump::dump_model().

opcode_name()

std::string tflread::Reader::opcode_name

(

const tflite::Operator *

op

)

const

Definition at line 132 of file Read.cpp.

{
  uint32_t index = op->opcode_index();
  assert(index < _op_codes.size());
  const tflite::OperatorCode *opcode = _op_codes.at(index);
 
  if (!mio::tflite::is_valid(opcode))
  {
    std::ostringstream oss;
    oss << "(invalid: " << index << ")";
    return oss.str();
  }
 
  return mio::tflite::opcode_name(opcode);
}

References mio::tflite::is_valid(), and mio::tflite::opcode_name().

Referenced by tfldump::dump_sub_graph().

opcodes()

const std::vector< const tflite::OperatorCode * > & tflread::Reader::opcodes ( )

inline

Definition at line 61 of file Read.h.

{ return _op_codes; }

Referenced by tfldump::dump_model(), Reader(), and Reader().

operators()

const TFliteOperators_t * tflread::Reader::operators ( )

inline

Definition at line 64 of file Read.h.

{ return _operators; }

Referenced by tfldump::dump_sub_graph().

outputs()

const std::vector< int32_t > & tflread::Reader::outputs ( ) const

inline

Definition at line 66 of file Read.h.

{ return _outputs; }

Referenced by onert.common.basesession.BaseSession::_set_outputs(), tfldump::dump_sub_graph(), and validate_onnx2circle.OnnxRunner::get_outputs().

select_subgraph()

bool tflread::Reader::select_subgraph

(

uint32_t

subgraph

)

Definition at line 148 of file Read.cpp.

{
  _subgraph_index = sgindex;
  _tensors = nullptr;
  _operators = nullptr;
 
  _inputs.clear();
  _outputs.clear();
 
  if (_subgraphs->size() <= sgindex)
  {
    assert(false);
    return false;
  }
 
  const tflite::SubGraph *subgraph = (*_subgraphs)[sgindex];
 
  auto name = subgraph->name();
  _subgraph_name = name ? name->c_str() : "(noname)";
 
  _tensors = subgraph->tensors();
  _operators = subgraph->operators();
 
  _inputs = as_index_vector(subgraph->inputs());
  _outputs = as_index_vector(subgraph->outputs());
 
  return true;
}

References tflread::as_index_vector(), and flatbuffers::Vector< T, SizeT >::size().

Referenced by tfldump::dump_model().

signaturedefs()

const TFliteSignatureDef_t * tflread::Reader::signaturedefs ( ) const

inline

Definition at line 68 of file Read.h.

{ return _signaturedefs; }

Referenced by tfldump::dump_model().

subgraph_index()

uint32_t tflread::Reader::subgraph_index ( void  ) const

inline

Definition at line 80 of file Read.h.

{ return _subgraph_index; }

Referenced by tfldump::dump_sub_graph().

subgraph_name()

const std::string & tflread::Reader::subgraph_name ( void  ) const

inline

Definition at line 79 of file Read.h.

{ return _subgraph_name; }

Referenced by tfldump::dump_model().

tensors()

const TFliteTensors_t * tflread::Reader::tensors ( )

inline

Definition at line 63 of file Read.h.

{ return _tensors; }

Referenced by tfldump::dump_sub_graph().

version()

uint32_t tflread::Reader::version ( ) const

inline

Definition at line 59 of file Read.h.

{ return _version; }

Referenced by tfldump::dump_model().

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The documentation for this class was generated from the following files:

• compiler/tfldump/src/Read.h
• compiler/tfldump/src/Read.cpp