homeassistant.components.stream.fmp4utils Namespace Reference

Functions
Generator[int]	find_box (bytes mp4_bytes, bytes target_type, int box_start=0)
int	find_moov (BufferedIOBase mp4_io)
str	get_codec_string (bytes mp4_bytes)
bytes	read_init (BufferedIOBase bytes_io)
bytes	transform_init (bytes init, Orientation orientation)

Variables
tuple	FLIP = (ONE32 + ZERO32 + ZERO32) + (ZERO32 + NEGONE32 + ZERO32)
tuple	MIRROR = (NEGONE32 + ZERO32 + ZERO32) + (ZERO32 + ONE32 + ZERO32)
string	NEGONE32 = b"\xff\xff\x00\x00"
string	ONE32 = b"\x00\x01\x00\x00"
tuple	ROTATE_180 = (NEGONE32 + ZERO32 + ZERO32) + (ZERO32 + NEGONE32 + ZERO32)
tuple	ROTATE_LEFT = (ZERO32 + NEGONE32 + ZERO32) + (ONE32 + ZERO32 + ZERO32)
tuple	ROTATE_LEFT_FLIP = (ZERO32 + NEGONE32 + ZERO32) + (NEGONE32 + ZERO32 + ZERO32)
tuple	ROTATE_RIGHT = (ZERO32 + ONE32 + ZERO32) + (NEGONE32 + ZERO32 + ZERO32)
tuple	ROTATE_RIGHT_FLIP = (ZERO32 + ONE32 + ZERO32) + (ONE32 + ZERO32 + ZERO32)
tuple	TRANSFORM_MATRIX_TOP
string	XYW_ROW = ZERO32 + ZERO32 + b"\x40\x00\x00\x00"
string	ZERO32 = b"\x00\x00\x00\x00"

Detailed Description

Utilities to help convert mp4s to fmp4s.

Function Documentation

find_box()

Generator[int] homeassistant.components.stream.fmp4utils.find_box	(	bytes	mp4_bytes,
		bytes	target_type,
		int	box_start = 0
	)

Find location of first box (or sub box if box_start provided) of given type.

Definition at line 16 of file fmp4utils.py.

find_moov()

int homeassistant.components.stream.fmp4utils.find_moov

(

BufferedIOBase

mp4_io

)

Find location of moov atom in a BufferedIOBase mp4.

Definition at line 149 of file fmp4utils.py.

get_codec_string()

str homeassistant.components.stream.fmp4utils.get_codec_string

(

bytes

mp4_bytes

)

Get RFC 6381 codec string.

Definition at line 37 of file fmp4utils.py.

read_init()

bytes homeassistant.components.stream.fmp4utils.read_init

(

BufferedIOBase

bytes_io

)

Read the init from a mp4 file.

Definition at line 163 of file fmp4utils.py.

transform_init()

bytes homeassistant.components.stream.fmp4utils.transform_init	(	bytes	init,
		Orientation	orientation
	)

Change the transformation matrix in the header.

Definition at line 201 of file fmp4utils.py.

Variable Documentation

FLIP

tuple homeassistant.components.stream.fmp4utils.FLIP = (ONE32 + ZERO32 + ZERO32) + (ZERO32 + NEGONE32 + ZERO32)

Definition at line 180 of file fmp4utils.py.

MIRROR

tuple homeassistant.components.stream.fmp4utils.MIRROR = (NEGONE32 + ZERO32 + ZERO32) + (ZERO32 + ONE32 + ZERO32)

Definition at line 179 of file fmp4utils.py.

NEGONE32

string homeassistant.components.stream.fmp4utils.NEGONE32 = b"\xff\xff\x00\x00"

Definition at line 174 of file fmp4utils.py.

ONE32

string homeassistant.components.stream.fmp4utils.ONE32 = b"\x00\x01\x00\x00"

Definition at line 173 of file fmp4utils.py.

ROTATE_180

tuple homeassistant.components.stream.fmp4utils.ROTATE_180 = (NEGONE32 + ZERO32 + ZERO32) + (ZERO32 + NEGONE32 + ZERO32)

Definition at line 178 of file fmp4utils.py.

ROTATE_LEFT

tuple homeassistant.components.stream.fmp4utils.ROTATE_LEFT = (ZERO32 + NEGONE32 + ZERO32) + (ONE32 + ZERO32 + ZERO32)

Definition at line 177 of file fmp4utils.py.

ROTATE_LEFT_FLIP

tuple homeassistant.components.stream.fmp4utils.ROTATE_LEFT_FLIP = (ZERO32 + NEGONE32 + ZERO32) + (NEGONE32 + ZERO32 + ZERO32)

Definition at line 182 of file fmp4utils.py.

ROTATE_RIGHT

tuple homeassistant.components.stream.fmp4utils.ROTATE_RIGHT = (ZERO32 + ONE32 + ZERO32) + (NEGONE32 + ZERO32 + ZERO32)

Definition at line 176 of file fmp4utils.py.

ROTATE_RIGHT_FLIP

tuple homeassistant.components.stream.fmp4utils.ROTATE_RIGHT_FLIP = (ZERO32 + ONE32 + ZERO32) + (ONE32 + ZERO32 + ZERO32)

Definition at line 183 of file fmp4utils.py.

TRANSFORM_MATRIX_TOP

tuple homeassistant.components.stream.fmp4utils.TRANSFORM_MATRIX_TOP

Initial value:

=  (
    # The index into this tuple corresponds to the EXIF orientation tag
    # Only index values of 2 through 8 are used
    # The first two entries are just to keep everything aligned
    b"",  # 0
    b"",  # 1
    MIRROR,  # 2
    ROTATE_180,  # 3
    FLIP,  # 4
    ROTATE_LEFT_FLIP,  # 5
    ROTATE_LEFT,  # 6
    ROTATE_RIGHT_FLIP,  # 7
    ROTATE_RIGHT,  # 8
)

Definition at line 185 of file fmp4utils.py.

XYW_ROW

string homeassistant.components.stream.fmp4utils.XYW_ROW = ZERO32 + ZERO32 + b"\x40\x00\x00\x00"

Definition at line 175 of file fmp4utils.py.

ZERO32

string homeassistant.components.stream.fmp4utils.ZERO32 = b"\x00\x00\x00\x00"

Definition at line 172 of file fmp4utils.py.