Encoder (vorbis.Vorbis.Encoder)

type t

Internal state of an encoder.

val create : int -> int -> int -> int -> int -> t

create chans rate max_br nom_br min_br creates a new encoder with * chans channels, with sample rate rate Hz and with respectively max_br, * nom_br and min_br as maximal, nominal and minimal bitrates (in bps).

val create_vbr : int -> int -> float -> t

create_vbr chans rate quality creates a new encoder in variable bitrate * with chans channels, with sample rate rate Hz and with quality * quality, which should be between -1 and 1 (1 is the best).

val reset : t -> unit

val headerout : 
  ?encoder:string ->
  t ->
  Ogg.Stream.stream ->
  (string * string) list ->
  unit

Encode a header given a list of tags.

val headerout_packetout : 
  ?encoder:string ->
  t ->
  (string * string) list ->
  Ogg.Stream.packet * Ogg.Stream.packet * Ogg.Stream.packet

Encoder a header, but do not submit packet to * Ogg Stream. Usefull when multiplexing ogg streams * since the all first packets of each streams must be packed * in the initial pages.

val get_channels : t -> int

Get the number of audio channels expected by * the encoder.

val encode_buffer_float : 
  t ->
  Ogg.Stream.stream ->
  float array array ->
  int ->
  int ->
  unit

Encode a buffer of PCM data. * The PCM data array must have at least the expected * number of channels. Otherwise, the function raises Invalid_channels.

val encode_buffer_float_ba : 
  t ->
  Ogg.Stream.stream ->
  (float, Stdlib.Bigarray.float32_elt, Stdlib.Bigarray.c_layout)
    Stdlib.Bigarray.Array1.t
    array ->
  int ->
  int ->
  unit

val time_of_granulepos : t -> Stdlib.Int64.t -> Stdlib.Nativeint.t

Convert a granulepos to absolute time in seconds. The granulepos is * interpreted in the context of a given encoder, and gives * the end time of a frame's presentation as used in Ogg mux ordering.

val end_of_stream : t -> Ogg.Stream.stream -> unit