Membrane Caps: Audio.MPEG

v0.2.0

Membrane Caps: Audio.MPEG v0.2.0 Membrane.Caps.Audio.MPEG View Source

This module implements struct for caps representing MPEG audio stream.

See MPEG Frame header documentation

Link to this section Summary

Types

bitrate_t()
channel_mode_t()
copyright_t()
crc_enabled_t()
emphasis_mode_t()
layer_t()
mode_extension_t()
original_t()
padding_enabled_t()
private_t()
sample_rate_t()
t()
version_t()

Functions

frame_size(mpeg)

Returns the size of a frame in bytes. The result does not include the size of a header

header_size()

Returns the size of MPEG audio frame header (4 bytes)

samples_per_frame(atom1, atom2)

Returns amount of raw audio samples that are in the frame for given version/layer combination

sound_of_silence()

Returns one ‘silent’ frame along with its caps

Link to this section Types

Link to this type bitrate_t() View Source 
bitrate_t() :: pos_integer() | :free
Link to this type channel_mode_t() View Source 
channel_mode_t() :: :stereo | :joint_stereo | :dual_channel | :single_channel
Link to this type copyright_t() View Source 
copyright_t() :: boolean()
Link to this type crc_enabled_t() View Source 
crc_enabled_t() :: boolean()
Link to this type emphasis_mode_t() View Source 
emphasis_mode_t() :: :none | :emphasis_50_15 | :reserved | :ccit_j_17
Link to this type layer_t() View Source 
layer_t() :: :layer1 | :layer2 | :layer3
Link to this type mode_extension_t() View Source 
mode_extension_t() :: :mode0 | :mode1 | :mode2 | :mode3 | nil
Link to this type original_t() View Source 
original_t() :: boolean()
Link to this type padding_enabled_t() View Source 
padding_enabled_t() :: boolean()
Link to this type private_t() View Source 
private_t() :: boolean()
Link to this type sample_rate_t() View Source 
sample_rate_t() :: pos_integer()
Link to this type t() View Source 
t() :: %Membrane.Caps.Audio.MPEG{
  bitrate: bitrate_t(),
  channel_mode: channel_mode_t(),
  channels: term(),
  copyright: copyright_t(),
  crc_enabled: crc_enabled_t(),
  emphasis_mode: emphasis_mode_t(),
  layer: layer_t(),
  mode_extension: mode_extension_t(),
  original: original_t(),
  padding_enabled: padding_enabled_t(),
  private: private_t(),
  sample_rate: sample_rate_t(),
  version: version_t()
}
Link to this type version_t() View Source 
version_t() :: :v1 | :v2 | :v2_5

Link to this section Functions

Link to this function frame_size(mpeg) View Source 
frame_size(caps :: t()) :: pos_integer()

Returns the size of a frame in bytes. The result does not include the size of a header.

Link to this function header_size() View Source 
header_size() :: 4

Returns the size of MPEG audio frame header (4 bytes).

Link to this function samples_per_frame(atom1, atom2) View Source 
samples_per_frame(version_t(), layer_t()) :: pos_integer()

Returns amount of raw audio samples that are in the frame for given version/layer combination.

Inlined by the compiler.

Link to this function sound_of_silence() View Source 
sound_of_silence() :: {binary(), t()}

Returns one ‘silent’ frame along with its caps.

Inlined by the compiler.