Module `File.Decoder`Source

Sourcetype t

Internal state of a decoder.

val create : 
  (int -> string * int) ->
  (int -> Unix.seek_command -> int) ->
  (unit -> int) ->
  t

create read_func seek_func tell_func params opens a * stream like openfile for decoding but callbacks are used to * manipulate the data. read_func should return the requested amount of bytes * (or less if it is the end of file), seek_funk should return 0 if the seek * was ok or -1 if the stream is not seekable, tell_func should return the current * offset or -1 if there is no notion of offset in the stream. * Raises: Read_error, Not_vorbis, Version_mismatch, Bad_header, Internal_fault.

Sourceval openfile : string -> t * Unix.file_descr

Open a vorbis file for decoding.

Sourceval openfile_with_fd : Unix.file_descr -> t

Sourceval decode_float : t -> float array array -> int -> int -> int

decode_float dec buff ofs len decodes len samples in each channel and puts * the result in buff starting at position ofs. *

raises Hole_in_data
if there was an interruption of the data. *
@raise Invalid_parameters
if all the data cannot fit in the buffer starting at the given position.

Sourceval decode_float_alloc : t -> int -> float array array

Source

val decode_float_ba : 
  t ->
  (float, Bigarray.float32_elt, Bigarray.c_layout) Bigarray.Array1.t array ->
  int ->
  int ->
  int

decode_float_ba dec buff ofs len decodes len samples in each channel and puts * the result in buff starting at position ofs. *

raises Hole_in_data
if there was an interruption of the data. *
@raise Invalid_parameters
if all the data cannot fit in the buffer starting at the given position.

Source

val decode_float_alloc_ba : 
  t ->
  int ->
  (float, Bigarray.float32_elt, Bigarray.c_layout) Bigarray.Array1.t array

Source

val decode : 
  t ->
  ?big_endian:bool ->
  ?sample_size:int ->
  ?signed:bool ->
  bytes ->
  int ->
  int ->
  int

Same as decode_float but decodes to integers.

Sourceval streams : t -> int

Get the number of logical bitstreams within a physical bitstream.

Sourceval bitstream : t -> bitstream

Get the index of the sequential logical bitstream currently being decoded * (incremented at chaining boundaries even for non-seekable streams). For * seekable streams, it represents the actual chaining index within the * physical bitstream.

Sourceval comments : t -> bitstream -> string * (string * string) list

Get the vorbis comments from a vorbis file. The second argument is the * number of the logical bitstream (the current bitstream is used if it is set * to None).

Sourceval info : t -> bitstream -> info

Get the vorbis information from the stream header of a bitstream.

Sourceval bitrate : t -> bitstream -> int

Get the bitrate of a bitsream (in bps).

Sourceval samples : t -> bitstream -> int

Get the total pcm samples of a bitstream.

Sourceval duration : t -> bitstream -> float

Get the duration in seconds of a bitstream.

Sourceval serialnumber : t -> bitstream -> int

Get the serial number of a bitstream.

package vorbis

Module File.DecoderSource

Module `File.Decoder`Source