shaka::media::H26xByteToUnitStreamConverter Class Reference

A base class that is used to convert H.26x byte streams to NAL unit streams. More...

#include <h26x_byte_to_unit_stream_converter.h>

Inheritance diagram for shaka::media::H26xByteToUnitStreamConverter:

Public Member Functions
	H26xByteToUnitStreamConverter (Nalu::CodecType type)
	H26xByteToUnitStreamConverter (Nalu::CodecType type, H26xStreamFormat stream_format)
bool	ConvertByteStreamToNalUnitStream (const uint8_t *input_frame, size_t input_frame_size, std::vector< uint8_t > *output_frame)
virtual bool	GetDecoderConfigurationRecord (std::vector< uint8_t > *decoder_config) const =0
H26xStreamFormat	stream_format () const

Static Public Attributes
static constexpr size_t	kUnitStreamNaluLengthSize = 4

Protected Member Functions
bool	strip_parameter_set_nalus () const
void	WarnIfNotMatch (int nalu_type, const uint8_t *nalu_ptr, size_t nalu_size, const std::vector< uint8_t > &vector)

Detailed Description

A base class that is used to convert H.26x byte streams to NAL unit streams.

Definition at line 23 of file h26x_byte_to_unit_stream_converter.h.

Constructor & Destructor Documentation

H26xByteToUnitStreamConverter() [1/2]

shaka::media::H26xByteToUnitStreamConverter::H26xByteToUnitStreamConverter ( Nalu::CodecType  type )

explicit

Create a byte to unit stream converter with specified codec type. The setting of KeepParameterSetNalus is defined by a gflag.

Definition at line 40 of file h26x_byte_to_unit_stream_converter.cc.

H26xByteToUnitStreamConverter() [2/2]

shaka::media::H26xByteToUnitStreamConverter::H26xByteToUnitStreamConverter	(	Nalu::CodecType	type,
		H26xStreamFormat	stream_format
	)

Create a byte to unit stream converter with specified codec type and desired output stream format (whether to include parameter set nal units).

Definition at line 48 of file h26x_byte_to_unit_stream_converter.cc.

Member Function Documentation

ConvertByteStreamToNalUnitStream()

bool shaka::media::H26xByteToUnitStreamConverter::ConvertByteStreamToNalUnitStream	(	const uint8_t *	input_frame,
		size_t	input_frame_size,
		std::vector< uint8_t > *	output_frame
	)

Converts a whole byte stream encoded video frame to NAL unit stream format.

Parameters

input_frame	is a buffer containing a whole H.26x frame in byte stream format.
input_frame_size	is the size of the H.26x frame, in bytes.
output_frame	is a pointer to a vector which will receive the converted frame.

Returns

true if successful, false otherwise.

Definition at line 55 of file h26x_byte_to_unit_stream_converter.cc.

GetDecoderConfigurationRecord()

virtual bool shaka::media::H26xByteToUnitStreamConverter::GetDecoderConfigurationRecord ( std::vector< uint8_t > *  decoder_config ) const

pure virtual

Creates either an AVCDecoderConfigurationRecord or a HEVCDecoderConfigurationRecord from the units extracted from the byte stream.

Parameters

decoder_config

is a pointer to a vector, which on successful return will contain the computed record.

Returns

true if successful, or false otherwise.

Implemented in shaka::media::H265ByteToUnitStreamConverter, and shaka::media::H264ByteToUnitStreamConverter.

---

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

• packager/media/codecs/h26x_byte_to_unit_stream_converter.h
• packager/media/codecs/h26x_byte_to_unit_stream_converter.cc