pax_global_header00006660000000000000000000000064137645312640014525gustar00rootroot0000000000000052 comment=935376cb15bd08ad9118150eeb30686dd8210d30 ocaml-portaudio-0.2.2/000077500000000000000000000000001376453126400146255ustar00rootroot00000000000000ocaml-portaudio-0.2.2/.github/000077500000000000000000000000001376453126400161655ustar00rootroot00000000000000ocaml-portaudio-0.2.2/.github/workflows/000077500000000000000000000000001376453126400202225ustar00rootroot00000000000000ocaml-portaudio-0.2.2/.github/workflows/main.yml000066400000000000000000000006651376453126400217000ustar00rootroot00000000000000name: Build on: [push] jobs: build: runs-on: ${{ matrix.operating-system }} strategy: matrix: operating-system: [ubuntu-latest, macos-latest] ocaml-version: ['4.09.0'] steps: - uses: actions/checkout@v1 - uses: avsm/setup-ocaml@master with: ocaml-version: ${{ matrix.ocaml-version }} - run: opam pin add -n . - run: opam depext -yt portaudio - run: opam install -t . ocaml-portaudio-0.2.2/.gitignore000066400000000000000000000000631376453126400166140ustar00rootroot00000000000000*~ _build *.byte *.native _tests .merlin *.install ocaml-portaudio-0.2.2/.gitmodules000066400000000000000000000001031376453126400167740ustar00rootroot00000000000000[submodule "m4"] path = m4 url = git://github.com/savonet/m4.git ocaml-portaudio-0.2.2/.merlin000066400000000000000000000000221376453126400161060ustar00rootroot00000000000000S src/** B src/** ocaml-portaudio-0.2.2/.ocamlformat000066400000000000000000000003201376453126400171250ustar00rootroot00000000000000profile = conventional break-separators = after space-around-lists = false doc-comments = before match-indent = 2 match-indent-nested = always parens-ite exp-grouping = preserve module-item-spacing = compact ocaml-portaudio-0.2.2/CHANGES000066400000000000000000000013451376453126400156230ustar00rootroot000000000000000.2.2 (10-12-2020) ====== * Switch to dune! 0.2.1 (03-08-2015) ===== * Switch to standard int32_t type. 0.2.0 (02-07-2011) ===== Changes contributed by Niki Yoshiuchi: * Added bigarray interface * Added support for callbacks 0.1.3 (12-10-2009) ===== * Added support for --enable-debugging configure option * Added NO_CUSTOM to build in standard mode. * Added prefix to main compilation variables if passed to configure. * Makefile now honnors LIBDIRS variable for linking against libraries located in other places than then standard ones. 0.1.2 (16-04-2008) ===== * More portable make invokation * Install .cmx file 0.1.1 (19-11-2007) ===== * Changed licence to LGPL+link exception 0.1.0 (17-10-2007) ===== * Initial release ocaml-portaudio-0.2.2/COPYING000066400000000000000000000655731376453126400157000ustar00rootroot00000000000000The software distributed in this tarball is licenced under the GNU Lesser General Public License, with a special exception: As a special exception to the GNU Library General Public License, you may link, statically or dynamically, a "work that uses the Library" with a publicly distributed version of the Library to produce an executable file containing portions of the Library, and distribute that executable file under terms of your choice, without any of the additional requirements listed in clause 6 of the GNU Library General Public License. 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You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Also add information on how to contact you by electronic and paper mail. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the library, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the library `Frob' (a library for tweaking knobs) written by James Random Hacker. , 1 April 1990 Ty Coon, President of Vice That's all there is to it! ocaml-portaudio-0.2.2/README.md000066400000000000000000000011071376453126400161030ustar00rootroot00000000000000ocaml-faad ========== This package contains an OCaml interface for the portable audio I/O library. Please read the COPYING file before using this software. Prerequisites: ============== - ocaml - portaudio - findlib - dune >= 2.0 Compilation: ============ ``` $ dune build ``` This should build both the native and the byte-code version of the extension library. Installation: ============= Via `opam`: ``` $ opam install samplerate ``` Via `dune` (for developers): ``` $ dune install ``` This should install the library file (using ocamlfind) in the appropriate place. ocaml-portaudio-0.2.2/dune-project000066400000000000000000000007611376453126400171530ustar00rootroot00000000000000(lang dune 2.0) (version 0.2.2) (name portaudio) (source (github savonet/ocaml-portaudio)) (license LGPL-2.1) (authors "The Savonet Team ") (maintainers "The Savonet Team ") (generate_opam_files true) (package (name portaudio) (synopsis "SBindings for the portaudio library which provides high-level functions for using soundcards") (depends conf-portaudio conf-pkg-config (dune (>= 2.0)) dune-configurator) ) ocaml-portaudio-0.2.2/examples/000077500000000000000000000000001376453126400164435ustar00rootroot00000000000000ocaml-portaudio-0.2.2/examples/dune000066400000000000000000000000621376453126400173170ustar00rootroot00000000000000(executable (name noise) (libraries portaudio)) ocaml-portaudio-0.2.2/examples/noise.ml000066400000000000000000000201301376453126400201060ustar00rootroot00000000000000open Portaudio open Bigarray let samplerate = ref 44100. let choose_device () = print_endline "-1 Quit"; let dcount = get_device_count () in for d = 0 to dcount - 1 do let dinfo = get_device_info d in Printf.printf "%d\t%s\n" d dinfo.d_name done; read_int () let formats = [| "int8"; "int16"; "int24"; "int32"; "float32" |] let int_of_format s = let ans = ref (-1) in for i = 0 to Array.length formats - 1 do if s = formats.(i) then ans := i done; if !ans = -1 then raise Not_found; !ans let choose_format () = for i = 0 to Array.length formats - 1 do let s = formats.(i) in Printf.printf "%d\t%s\n" i s done; read_int () let rec choose_interleaved () = print_endline "0 Non-interleaved"; print_endline "1 Interleaved"; match read_int () with 0 -> false | 1 -> true | _ -> choose_interleaved () let choose_callback () = print_endline "0 blocking write"; print_endline "1 callback"; read_int () let test_array stream init randf randv = print_endline "Testing arrays..."; let buf = Array.make 256 init in let bbuf = [| buf; buf |] in for _ = 0 to 100 do for i = 0 to 255 do let rand = randf randv in buf.(i) <- rand done; Portaudio.write_stream stream bbuf 0 256 done let fill_ba ba inter randf randv = for i = 0 to 255 do let rand = randf randv in let left, right = if inter then ([| 2 * i |], [| (2 * i) + 1 |]) else ([| 0; i |], [| 1; i |]) in Genarray.set ba left rand; Genarray.set ba right rand done let test_bigarray stream inter batype randf randv = print_endline "Testing Bigarrays..."; let dims = if inter then [| 2 * 256 |] else [| 2; 256 |] in let ba = Genarray.create batype c_layout dims in for _ = 0 to 100 do fill_ba ba inter randf randv; Portaudio.write_stream_ba stream ba 0 256 done let start inter d fmt = match fmt with | 0 -> let outparam = Some { channels = 2; device = d; sample_format = format_int8; latency = 1.; } in let stream = open_stream ~interleaved:inter None outparam !samplerate 256 [] in start_stream stream; test_array stream 0 Random.int 256; test_bigarray stream inter int8_signed Random.int 256; close_stream stream | 1 -> let outparam = Some { channels = 2; device = d; sample_format = format_int16; latency = 1.; } in let stream = open_stream ~interleaved:inter None outparam !samplerate 256 [] in start_stream stream; test_array stream 0 Random.int 65536; test_bigarray stream inter int16_signed Random.int 65536; close_stream stream | 2 -> let outparam = Some { channels = 2; device = d; sample_format = format_int24; latency = 1.; } in let stream = open_stream ~interleaved:inter None outparam !samplerate 256 [] in start_stream stream; test_array stream Int32.zero Random.int32 (Int32.of_int (4096 * 4096)); test_bigarray stream inter int32 Random.int32 (Int32.of_int (4096 * 4096)); close_stream stream | 3 -> let outparam = Some { channels = 2; device = d; sample_format = format_int32; latency = 1.; } in let stream = open_stream ~interleaved:inter None outparam !samplerate 256 [] in start_stream stream; test_array stream Int32.zero Random.int32 Int32.max_int; test_bigarray stream inter int32 Random.int32 Int32.max_int; close_stream stream | 4 -> let outparam = Some { channels = 2; device = d; sample_format = format_float32; latency = 1.; } in let stream = open_stream ~interleaved:inter None outparam !samplerate 256 [] in start_stream stream; test_array stream 0. (fun () -> 1. -. Random.float 2.) (); test_bigarray stream inter float32 (fun () -> 1. -. Random.float 2.) (); close_stream stream | _ -> () let start_callback d fmt = let cb r _ y l = for i = 0 to l - 1 do Genarray.set y [| 2 * i |] (r ()); Genarray.set y [| (2 * i) + 1 |] (r ()) done; 0 in match fmt with | 0 -> let outparam = Some { channels = 2; device = d; sample_format = format_int8; latency = 1.; } in let r () = Random.int 256 in let stream = open_stream ~callback:(cb r) None outparam !samplerate 0 [] in start_stream stream; sleep 5000; close_stream stream | 1 -> let outparam = Some { channels = 2; device = d; sample_format = format_int16; latency = 1.; } in let r () = Random.int 65536 in let stream = open_stream ~callback:(cb r) None outparam !samplerate 0 [] in start_stream stream; sleep 5000; close_stream stream | 2 -> let outparam = Some { channels = 2; device = d; sample_format = format_int24; latency = 1.; } in let r () = Random.int32 (Int32.of_int (4096 * 4096)) in let stream = open_stream ~callback:(cb r) None outparam !samplerate 0 [] in start_stream stream; sleep 5000; close_stream stream | 3 -> let outparam = Some { channels = 2; device = d; sample_format = format_int32; latency = 1.; } in let r () = Random.int32 Int32.max_int in let stream = open_stream ~callback:(cb r) None outparam !samplerate 0 [] in start_stream stream; sleep 5000; close_stream stream | 4 -> let outparam = Some { channels = 2; device = d; sample_format = format_float32; latency = 1.; } in let r () = 1. -. Random.float 2. in let stream = open_stream ~callback:(cb r) None outparam !samplerate 0 [] in start_stream stream; sleep 5000; close_stream stream | _ -> () let device = ref None let format = ref None let callback = ref None let interleaved = ref None let main () = let d = match !device with Some d -> d | None -> choose_device () in if d = -1 then exit 0; let fmt = match !format with Some f -> f | None -> choose_format () in let cb = match !callback with Some c -> c | None -> choose_callback () in match cb with | 0 -> let inter = match !interleaved with Some i -> i | None -> choose_interleaved () in start inter d fmt | 1 -> start_callback d fmt | _ -> () let () = Arg.parse [ ("--device", Int (fun n -> device := Some n), "Device."); ("--format", String (fun s -> format := Some (int_of_format s)), "Format."); ("--blocking", Unit (fun () -> callback := Some 0), "Use blocking mode."); ("--callback", Unit (fun () -> callback := Some 1), "Use callbacks."); ( "--interleaved", Unit (fun () -> interleaved := Some true), "Interleaved samples." ); ( "--non-interleaved", Unit (fun () -> interleaved := Some false), "Non-interleaved samples." ); ("--samplerate", Int (fun f -> samplerate := float f), "Samplerate"); ] (fun s -> Printf.eprintf "Ignored argument: %s\n%!" s) "make noise"; Printf.printf "Using %s.\n%!" (get_version_string ()); Random.self_init (); Portaudio.init (); main () ocaml-portaudio-0.2.2/portaudio.opam000066400000000000000000000014521376453126400175130ustar00rootroot00000000000000# This file is generated by dune, edit dune-project instead opam-version: "2.0" version: "0.2.2" synopsis: "SBindings for the portaudio library which provides high-level functions for using soundcards" maintainer: ["The Savonet Team "] authors: ["The Savonet Team "] license: "LGPL-2.1" homepage: "https://github.com/savonet/ocaml-portaudio" bug-reports: "https://github.com/savonet/ocaml-portaudio/issues" depends: [ "conf-portaudio" "conf-pkg-config" "dune" {>= "2.0"} "dune-configurator" ] build: [ ["dune" "subst"] {pinned} [ "dune" "build" "-p" name "-j" jobs "@install" "@runtest" {with-test} "@doc" {with-doc} ] ] dev-repo: "git+https://github.com/savonet/ocaml-portaudio.git" ocaml-portaudio-0.2.2/src/000077500000000000000000000000001376453126400154145ustar00rootroot00000000000000ocaml-portaudio-0.2.2/src/config/000077500000000000000000000000001376453126400166615ustar00rootroot00000000000000ocaml-portaudio-0.2.2/src/config/discover.ml000066400000000000000000000012121376453126400210250ustar00rootroot00000000000000module C = Configurator.V1 let () = C.main ~name:"portaudio-pkg-config" (fun c -> let default : C.Pkg_config.package_conf = { libs = ["-lportaudio"]; cflags = [] } in let conf = match C.Pkg_config.get c with | None -> default | Some pc -> ( match C.Pkg_config.query_expr_err pc ~package:"portaudio-2.0" ~expr:"portaudio-2.0" with | Error msg -> failwith msg | Ok deps -> deps ) in C.Flags.write_sexp "c_flags.sexp" conf.cflags; C.Flags.write_sexp "c_library_flags.sexp" conf.libs) ocaml-portaudio-0.2.2/src/config/dune000066400000000000000000000000751376453126400175410ustar00rootroot00000000000000(executable (name discover) (libraries dune.configurator)) ocaml-portaudio-0.2.2/src/dune000066400000000000000000000005461376453126400162770ustar00rootroot00000000000000(library (name portaudio) (public_name portaudio) (synopsis "OCaml bindings for portaudio") (libraries threads) (foreign_stubs (language c) (names portaudio_stubs) (flags (:include c_flags.sexp))) (c_library_flags (:include c_library_flags.sexp))) (rule (targets c_flags.sexp c_library_flags.sexp) (action (run ./config/discover.exe))) ocaml-portaudio-0.2.2/src/portaudio.ml000066400000000000000000000133021376453126400177530ustar00rootroot00000000000000(* * Copyright 2007 Samuel Mimram * * This file is part of ocaml-portaudio. * * ocaml-portaudio is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * ocaml-portaudio is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with ocaml-portaudio; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * As a special exception to the GNU Library General Public License, you may * link, statically or dynamically, a "work that uses the Library" with a publicly * distributed version of the Library to produce an executable file containing * portions of the Library, and distribute that executable file under terms of * your choice, without any of the additional requirements listed in clause 6 * of the GNU Library General Public License. * By "a publicly distributed version of the Library", we mean either the unmodified * Library as distributed by The Savonet Team, or a modified version of the Library that is * distributed under the conditions defined in clause 3 of the GNU Library General * Public License. This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU Library General Public License. * *) exception Error of int exception Unanticipated_host_error let () = Callback.register_exception "portaudio_exn_error" (Error 0); Callback.register_exception "portaudio_exn_unanticipated_host_error" Unanticipated_host_error external get_version : unit -> int = "ocaml_pa_get_version" external get_version_string : unit -> string = "ocaml_pa_get_version_text" external string_of_error : int -> string = "ocaml_pa_get_error_text" external get_last_host_error : unit -> int * string = "ocaml_pa_get_last_host_error_info" external init : unit -> unit = "ocaml_pa_initialize" let init () = ignore (Thread.self ()); init () external terminate : unit -> unit = "ocaml_pa_terminate" type host_api_info = { h_struct_version : int; h_host_api_type : int; h_name : string; h_device_count : int; h_default_input_device : int; h_default_output_device : int; } external get_host_api_count : unit -> int = "ocaml_pa_get_host_api_count" external get_default_host_api : unit -> int = "ocaml_pa_get_default_host_api" external get_host_api_info : int -> host_api_info = "ocaml_pa_get_host_api_info" type device_info = { d_struct_version : int; d_name : string; d_host_api : int; d_max_input_channels : int; d_max_output_channels : int; d_default_low_input_latency : float; d_default_low_output_latency : float; d_default_high_input_latency : float; d_default_high_output_latency : float; d_default_sample_rate : float; } external get_default_input_device : unit -> int = "ocaml_pa_get_default_input_device" external get_default_output_device : unit -> int = "ocaml_pa_get_default_output_device" external get_device_count : unit -> int = "ocaml_pa_get_device_count" external get_device_info : int -> device_info = "ocaml_pa_get_device_info" (*type sample_format = Format_int8 | Format_int16 | Format_int24 | Format_int32 | Format_float32*) type ('a, 'b) sample_format = int let format_int8 = 0 let format_int16 = 1 let format_int24 = 2 let format_int32 = 3 let format_float32 = 4 type ('a, 'b) stream_parameters = { channels : int; device : int; sample_format : ('a, 'b) sample_format; latency : float; } type stream_flag type ('a, 'b, 'c, 'd) stream type ('a, 'b, 'c, 'd) callback = ('a, 'b, Bigarray.c_layout) Bigarray.Genarray.t -> ('c, 'd, Bigarray.c_layout) Bigarray.Genarray.t -> int -> int external open_stream : ('a, 'b) stream_parameters option -> ('c, 'd) stream_parameters option -> bool -> float -> int -> stream_flag list -> ('a, 'b, 'c, 'd) callback option -> ('a, 'b, 'c, 'd) stream = "ocaml_pa_open_stream_byte" "ocaml_pa_open_stream" let open_stream ip op ?(interleaved = true) rate buflen ?callback flags = open_stream ip op interleaved rate buflen flags callback external open_default_stream : int -> int -> ('a, 'b) sample_format -> bool -> int -> int -> ('a, 'b, 'a, 'b) callback option -> ('a, 'b, 'a, 'b) stream = "ocaml_pa_open_default_stream_byte" "ocaml_pa_open_default_stream" let open_default_stream ?callback ?(format = format_float32) ?(interleaved = true) ic oc rate frames = open_default_stream ic oc format interleaved rate frames callback external close_stream : ('a, 'b, 'c, 'd) stream -> unit = "ocaml_pa_close_stream" external start_stream : ('a, 'b, 'c, 'd) stream -> unit = "ocaml_pa_start_stream" external stop_stream : ('a, 'b, 'c, 'd) stream -> unit = "ocaml_pa_stop_stream" external abort_stream : ('a, 'b, 'c, 'd) stream -> unit = "ocaml_pa_abort_stream" external sleep : int -> unit = "ocaml_pa_sleep" external write_stream : ('a, 'b, 'c, 'd) stream -> 'c array array -> int -> int -> unit = "ocaml_pa_write_stream" external read_stream : ('a, 'b, 'c, 'd) stream -> 'a array array -> int -> int -> unit = "ocaml_pa_read_stream" external write_stream_ba : ('a, 'b, 'c, 'd) stream -> ('c, 'd, Bigarray.c_layout) Bigarray.Genarray.t -> int -> int -> unit = "ocaml_pa_write_stream_ba" external read_stream_ba : ('a, 'b, 'c, 'd) stream -> ('a, 'b, Bigarray.c_layout) Bigarray.Genarray.t -> int -> int -> unit = "ocaml_pa_read_stream_ba" ocaml-portaudio-0.2.2/src/portaudio.mli000066400000000000000000000162201376453126400201260ustar00rootroot00000000000000(* * Copyright 2007 Samuel Mimram * * This file is part of ocaml-portaudio. * * ocaml-portaudio is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * ocaml-portaudio is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with ocaml-portaudio; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * As a special exception to the GNU Library General Public License, you may * link, statically or dynamically, a "work that uses the Library" with a publicly * distributed version of the Library to produce an executable file containing * portions of the Library, and distribute that executable file under terms of * your choice, without any of the additional requirements listed in clause 6 * of the GNU Library General Public License. * By "a publicly distributed version of the Library", we mean either the unmodified * Library as distributed by The Savonet Team, or a modified version of the Library that is * distributed under the conditions defined in clause 3 of the GNU Library General * Public License. This exception does not however invalidate any other reasons why * the executable file might be covered by the GNU Library General Public License. * *) (** * Bindings for the portaudio portable audio library. * * @author Samuel Mimram * @author Niki Yoshiuchi *) (** {2 Exceptions} *) (** An error occured. In the future, this exception should be replaced by more * specific exceptions. Use [string_of_error] to get a description of the * error. *) exception Error of int (** An unanticipaced *) exception Unanticipated_host_error (** Get a description of an error. *) val string_of_error : int -> string (** Get the last errror which occured together with its description. *) val get_last_host_error : unit -> int * string (** {2 General} *) (** Version of portaudio. *) val get_version : unit -> int (** Version of portaudio. *) val get_version_string : unit -> string (** Initialize the portaudio library. Should be called before calling any other * function. *) val init : unit -> unit (** Stop using the library. This function should be called before ending the * program and no other portaudio function should be called after. *) val terminate : unit -> unit (** {2 Host API} *) (** Host API Information *) type host_api_info = { h_struct_version : int; h_host_api_type : int; h_name : string; h_device_count : int; h_default_input_device : int; h_default_output_device : int; } (** Number of available host API. *) val get_host_api_count : unit -> int (** Index of the default host API. *) val get_default_host_api : unit -> int (** Information on a host API *) val get_host_api_info : int -> host_api_info (** Device Information *) type device_info = { d_struct_version : int; d_name : string; d_host_api : int; d_max_input_channels : int; d_max_output_channels : int; d_default_low_input_latency : float; d_default_low_output_latency : float; d_default_high_input_latency : float; d_default_high_output_latency : float; d_default_sample_rate : float; } (** Default input device. *) val get_default_input_device : unit -> int (** Default output device. *) val get_default_output_device : unit -> int (** Number of available devices. *) val get_device_count : unit -> int (** Information on device *) val get_device_info : int -> device_info (** {2 Streams} *) (** The abstract type [('a, 'b) sample_format] describes the OCaml type ['a] and the underlying C type ['b] used to represent the data being written to or read from a stream. This type is compatible with [('a, 'b) Bigarray.kind]. *) type ('a, 'b) sample_format (** See {!Portaudio.format_float32}. *) val format_int8 : (int, Bigarray.int8_signed_elt) sample_format (** See {!Portaudio.format_float32}. *) val format_int16 : (int, Bigarray.int16_signed_elt) sample_format (** See {!Portaudio.format_float32}. *) val format_int24 : (int32, Bigarray.int32_elt) sample_format (** See {!Portaudio.format_float32}. *) val format_int32 : (int32, Bigarray.int32_elt) sample_format (** The stream uses floats in the range of [-1.,1.] to represent audio data. * The underlying type is a 32 bit float. *) val format_float32 : (float, Bigarray.float32_elt) sample_format type ('a, 'b) stream_parameters = { channels : int; device : int; sample_format : ('a, 'b) sample_format; latency : float; } type stream_flag type ('a, 'b, 'c, 'd) stream (** The function signature of a callback. Callbacks only work with interleaved streams. *) type ('a, 'b, 'c, 'd) callback = ('a, 'b, Bigarray.c_layout) Bigarray.Genarray.t -> ('c, 'd, Bigarray.c_layout) Bigarray.Genarray.t -> int -> int (** [open_stream inparam outparam interleaved rate bufframes callback flags] opens a new * stream with input stream of format [inparam], output stream of format * [outparam] using interleaved or non-interleaved [interleaved] buffers * at [rate] samples per second, with [bufframes] frames per buffer * passed the callback function [callback] (0 means leave this choice to * portaudio). *) val open_stream : ('a, 'b) stream_parameters option -> ('c, 'd) stream_parameters option -> ?interleaved:bool -> float -> int -> ?callback:('a, 'b, 'c, 'd) callback -> stream_flag list -> ('a, 'b, 'c, 'd) stream (** [open_default_stream callback format interleaved inchans outchans rate bufframes] * opens default stream with [callback] as callback function, handling samples in * [format] format using interleaved or non-interleaved buffers [interleaved] with * [inchans] input channels and [outchans] output channels * at [rate] samples per seconds with handling buffers of size [bufframes]. *) val open_default_stream : ?callback:('a, 'b, 'a, 'b) callback -> ?format:('a, 'b) sample_format -> ?interleaved:bool -> int -> int -> int -> int -> ('a, 'b, 'a, 'b) stream (** Close a stream. *) val close_stream : ('a, 'b, 'c, 'd) stream -> unit (** Start a stream. *) val start_stream : ('a, 'b, 'c, 'd) stream -> unit (** Stop a stream. *) val stop_stream : ('a, 'b, 'c, 'd) stream -> unit (** Abort a stream. *) val abort_stream : ('a, 'b, 'c, 'd) stream -> unit (** Sleep. *) val sleep : int -> unit (** Write to a stream. *) val write_stream : ('a, 'b, 'c, 'd) stream -> 'c array array -> int -> int -> unit (** Read from a stream. *) val read_stream : ('a, 'b, 'c, 'd) stream -> 'a array array -> int -> int -> unit (** Write to a stream using a bigarray. *) val write_stream_ba : ('a, 'b, 'c, 'd) stream -> ('c, 'd, Bigarray.c_layout) Bigarray.Genarray.t -> int -> int -> unit (** Read from a stream using a bigarray. *) val read_stream_ba : ('a, 'b, 'c, 'd) stream -> ('a, 'b, Bigarray.c_layout) Bigarray.Genarray.t -> int -> int -> unit ocaml-portaudio-0.2.2/src/portaudio_stubs.c000066400000000000000000000520751376453126400210170ustar00rootroot00000000000000/* * Copyright 2007 Samuel Mimram * * This file is part of ocaml-portaudio. * * ocaml-portaudio is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * ocaml-portaudio is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with ocaml-portaudio; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * As a special exception to the GNU Library General Public License, you may * link, statically or dynamically, a "work that uses the Library" with a * publicly distributed version of the Library to produce an executable file * containing portions of the Library, and distribute that executable file under * terms of your choice, without any of the additional requirements listed in * clause 6 of the GNU Library General Public License. By "a publicly * distributed version of the Library", we mean either the unmodified Library as * distributed by The Savonet Team, or a modified version of the Library that is * distributed under the conditions defined in clause 3 of the GNU Library * General Public License. This exception does not however invalidate any other * reasons why the executable file might be covered by the GNU Library General * Public License. * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include typedef struct stream__t { PaStream *stream; int channels_in; int channels_out; int sample_format_in; int sample_format_out; value cb; int tstart; int tend; } stream_t; #define Stream_t_val(v) (*((stream_t **)Data_custom_val(v))) #define Stream_val(v) (Stream_t_val(v))->stream /* Check for errors. */ static int cerr(int ret) { if (ret >= 0) return ret; switch (ret) { case paUnanticipatedHostError: caml_raise_constant( *caml_named_value("portaudio_exn_unanticipated_host_error")); default: caml_raise_with_arg(*caml_named_value("portaudio_exn_error"), Val_int(ret)); } } CAMLprim value ocaml_pa_get_last_host_error_info(value unit) { CAMLparam0(); const PaHostErrorInfo *info = Pa_GetLastHostErrorInfo(); CAMLlocal1(ans); ans = caml_alloc_tuple(2); Store_field(ans, 0, Val_int(info->errorCode)); Store_field(ans, 1, caml_copy_string(info->errorText)); CAMLreturn(ans); } CAMLprim value ocaml_pa_get_version(value unit) { return Val_int(Pa_GetVersion()); } CAMLprim value ocaml_pa_get_version_text(value unit) { return caml_copy_string(Pa_GetVersionText()); } CAMLprim value ocaml_pa_get_error_text(value n) { return caml_copy_string(Pa_GetErrorText(Int_val(n))); } CAMLprim value ocaml_pa_initialize(value unit) { cerr(Pa_Initialize()); return Val_unit; } CAMLprim value ocaml_pa_terminate(value unit) { cerr(Pa_Terminate()); return Val_unit; } CAMLprim value ocaml_pa_get_host_api_count(value unit) { return Val_int(cerr(Pa_GetHostApiCount())); } CAMLprim value ocaml_pa_get_default_host_api(value unit) { return Val_int(cerr(Pa_GetDefaultHostApi())); } CAMLprim value ocaml_pa_get_host_api_info(value id) { CAMLparam1(id); CAMLlocal1(res); const PaHostApiInfo *info = Pa_GetHostApiInfo(Int_val(id)); res = caml_alloc_tuple(6); Field(res, 0) = Val_int(info->structVersion); Field(res, 1) = Val_int(info->type); Field(res, 2) = caml_copy_string(info->name); Field(res, 3) = Val_int(info->deviceCount); Field(res, 4) = Val_int(info->defaultOutputDevice); Field(res, 5) = Val_int(info->defaultInputDevice); CAMLreturn(res); } CAMLprim value ocaml_pa_get_default_input_device(value unit) { return Val_int(cerr(Pa_GetDefaultInputDevice())); } CAMLprim value ocaml_pa_get_default_output_device(value unit) { return Val_int(cerr(Pa_GetDefaultOutputDevice())); } CAMLprim value ocaml_pa_get_device_count(value unit) { return Val_int(cerr(Pa_GetDeviceCount())); } CAMLprim value ocaml_pa_get_device_info(value id) { CAMLparam1(id); CAMLlocal1(res); const PaDeviceInfo *info = Pa_GetDeviceInfo(Int_val(id)); res = caml_alloc_tuple(10); Field(res, 0) = Val_int(info->structVersion); Field(res, 1) = caml_copy_string(info->name); Field(res, 2) = Val_int(info->hostApi); Field(res, 3) = Val_int(info->maxInputChannels); Field(res, 4) = Val_int(info->maxOutputChannels); Field(res, 5) = caml_copy_double(info->defaultLowInputLatency); Field(res, 6) = caml_copy_double(info->defaultLowOutputLatency); Field(res, 7) = caml_copy_double(info->defaultHighInputLatency); Field(res, 8) = caml_copy_double(info->defaultHighOutputLatency); Field(res, 9) = caml_copy_double(info->defaultSampleRate); CAMLreturn(res); } static int get_ba_type(int fmt) { if (fmt & paFloat32) return CAML_BA_FLOAT32; if (fmt & paInt32 || fmt & paInt24) return CAML_BA_INT32; if (fmt & paInt16) return CAML_BA_SINT16; if (fmt & paInt8) return CAML_BA_SINT8; return 0; } value alloc_ba_input_ni(const void *data, unsigned long frames, stream_t *st) { int type = get_ba_type(st->sample_format_in); if (st->channels_in > 0) { return caml_ba_alloc_dims(type | CAML_BA_C_LAYOUT, 2, (void *)data, st->channels_in, frames, NULL); } return caml_ba_alloc_dims(type | CAML_BA_C_LAYOUT, 0, NULL, NULL); } value alloc_ba_output_ni(void *data, unsigned long frames, stream_t *st) { int type = get_ba_type(st->sample_format_out); if (st->channels_out > 0) { return caml_ba_alloc_dims(type | CAML_BA_C_LAYOUT, 2, data, st->channels_out, frames, NULL); } return caml_ba_alloc_dims(type | CAML_BA_C_LAYOUT, 0, NULL, NULL); } value alloc_ba_input(const void *data, unsigned long frames, stream_t *st) { if (st->sample_format_in & paNonInterleaved) return alloc_ba_input_ni(data, frames, st); int type = get_ba_type(st->sample_format_in); if (st->channels_in > 0) { return caml_ba_alloc_dims(type | CAML_BA_C_LAYOUT, 1, (void *)data, st->channels_in * frames, NULL); } return caml_ba_alloc_dims(type | CAML_BA_C_LAYOUT, 0, NULL, NULL); } value alloc_ba_output(void *data, unsigned long frames, stream_t *st) { if (st->sample_format_out & paNonInterleaved) return alloc_ba_output_ni(data, frames, st); int type = get_ba_type(st->sample_format_out); if (st->channels_out > 0) { return caml_ba_alloc_dims(type | CAML_BA_C_LAYOUT, 1, data, st->channels_out * frames, NULL); } return caml_ba_alloc_dims(type | CAML_BA_C_LAYOUT, 0, NULL, NULL); } int pa_callback(const void *input_buffer, void *output_buffer, unsigned long frames_per_buffer, const PaStreamCallbackTimeInfo *time_info, PaStreamCallbackFlags status_flags, void *user_data) { stream_t *st = (stream_t *)user_data; int ret; #ifdef CAML_THREADS if (!st->tstart && !st->tend) { caml_c_thread_register(); st->tstart = 1; } else if (st->tstart && st->tend) { st->tstart = 0; caml_c_thread_unregister(); return 0; } else if (st->tend) { return 0; } #endif caml_leave_blocking_section(); value in, out; in = alloc_ba_input(input_buffer, frames_per_buffer, st); out = alloc_ba_output(output_buffer, frames_per_buffer, st); ret = Int_val(caml_callback3(st->cb, in, out, Val_int(frames_per_buffer))); caml_enter_blocking_section(); return ret; } static const int format_cst[6] = {paInt8, paInt16, paInt24, paInt32, paFloat32}; static int fmt_val(value format, int interleaved) { return format_cst[Int_val(format)] | (interleaved ? 0 : paNonInterleaved); } /* The result must be freed after use. */ static PaStreamParameters *sp_val(value vsp, int interleaved) { PaStreamParameters *sp = malloc(sizeof(PaStreamParameters)); sp->channelCount = Int_val(Field(vsp, 0)); sp->device = Int_val(Field(vsp, 1)); sp->hostApiSpecificStreamInfo = NULL; sp->sampleFormat = fmt_val(Field(vsp, 2), interleaved); sp->suggestedLatency = Double_val(Field(vsp, 3)); return sp; } static void finalize_stream(value s) { stream_t *st = Stream_t_val(s); if (st->stream) Pa_CloseStream(st->stream); caml_remove_generational_global_root(&st->cb); free(st); } static struct custom_operations stream_ops = { "ocaml_pa_stream", finalize_stream, custom_compare_default, custom_hash_default, custom_serialize_default, custom_deserialize_default}; CAMLprim value ocaml_pa_open_stream(value inparam, value outparam, value interleaved, value rate, value frames, value flags, value cb) { CAMLparam5(inparam, outparam, interleaved, rate, frames); CAMLxparam2(flags, cb); CAMLlocal1(ans); stream_t *st; PaStream *stream; PaStreamParameters *ip = NULL, *op = NULL; int ret; PaStreamCallback *callb = NULL; st = malloc(sizeof(stream_t)); memset(st, 0, sizeof(*st)); st->tstart = 0; st->tend = 0; if (Is_block(inparam)) { ip = sp_val(Field(inparam, 0), Int_val(interleaved)); st->channels_in = ip->channelCount; st->sample_format_in = ip->sampleFormat; } if (Is_block(outparam)) { op = sp_val(Field(outparam, 0), Int_val(interleaved)); st->channels_out = op->channelCount; st->sample_format_out = op->sampleFormat; } if (Is_block(cb)) { st->cb = Field(cb, 0); caml_register_generational_global_root(&st->cb); callb = &pa_callback; } ret = Pa_OpenStream(&stream, ip, op, Double_val(rate), Int_val(frames), paNoFlag, callb, st); if (ret < 0) free(st); if (ip != NULL) free(ip); if (op != NULL) free(op); cerr(ret); st->stream = stream; ans = caml_alloc_custom(&stream_ops, sizeof(stream_t *), 1, 0); Stream_t_val(ans) = st; CAMLreturn(ans); } CAMLprim value ocaml_pa_open_stream_byte(value *argv, int argc) { return ocaml_pa_open_stream(argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6]); } CAMLprim value ocaml_pa_open_default_stream(value inchans, value outchans, value fmt, value interleaved, value rate, value frames, value cb) { CAMLparam5(inchans, outchans, fmt, rate, frames); CAMLxparam1(cb); CAMLlocal1(ans); stream_t *st; PaStream *stream; int ret; int inc = Int_val(inchans); int outc = Int_val(outchans); int sample_rate = Int_val(rate); int num_frames = Int_val(frames); int format = fmt_val(fmt, Int_val(interleaved)); PaStreamCallback *callb = NULL; st = malloc(sizeof(stream_t)); st->channels_in = inc; st->channels_out = outc; st->sample_format_in = format; st->sample_format_out = format; st->tstart = 0; st->tend = 0; if (Is_block(cb)) { st->cb = Field(cb, 0); caml_register_generational_global_root(&st->cb); callb = &pa_callback; } ret = Pa_OpenDefaultStream(&stream, inc, outc, format, sample_rate, num_frames, callb, st); if (ret < 0) free(st); cerr(ret); st->stream = stream; ans = caml_alloc_custom(&stream_ops, sizeof(stream_t *), 1, 0); Stream_t_val(ans) = st; CAMLreturn(ans); } CAMLprim value ocaml_pa_open_default_stream_byte(value *argv, int argc) { return ocaml_pa_open_default_stream(argv[0], argv[1], argv[2], argv[3], argv[4], argv[5], argv[6]); } CAMLprim value ocaml_pa_start_stream(value stream) { cerr(Pa_StartStream(Stream_val(stream))); caml_enter_blocking_section(); Pa_Sleep(1); caml_leave_blocking_section(); return Val_unit; } CAMLprim value ocaml_pa_stop_stream(value stream) { Stream_t_val(stream)->tend = 1; caml_enter_blocking_section(); Pa_Sleep(1); cerr(Pa_StopStream(Stream_val(stream))); caml_leave_blocking_section(); return Val_unit; } CAMLprim value ocaml_pa_abort_stream(value stream) { cerr(Pa_AbortStream(Stream_val(stream))); return Val_unit; } CAMLprim value ocaml_pa_close_stream(value stream) { cerr(Pa_CloseStream(Stream_val(stream))); Stream_val(stream) = 0; return Val_unit; } CAMLprim value ocaml_pa_sleep(value time) { CAMLparam1(time); caml_enter_blocking_section(); Pa_Sleep(Int_val(time)); caml_leave_blocking_section(); CAMLreturn(Val_unit); } int get_index(int fmt, int chans, int len, int c, int i) { int index; if (fmt & paNonInterleaved) { index = len * c + i; } else { index = chans * i + c; } return index; } #define GET_BUFFER(type, elem) \ { \ type *bufi = malloc(chans * len * sizeof(type)); \ for (c = 0; c < chans; ++c) { \ value bufc = Field(buf, c); \ for (i = 0; i < len; ++i) { \ bufi[chans * i + c] = elem; \ } \ } \ return bufi; \ } #define GET_BUFFER_NI(type, elem) \ { \ type **bufi = malloc(chans * sizeof(type *)); \ for (c = 0; c < chans; ++c) { \ bufi[c] = malloc(len * sizeof(type)); \ value bufc = Field(buf, c); \ for (i = 0; i < len; ++i) { \ bufi[c][i] = elem; \ } \ } \ return bufi; \ } void *get_buffer(int fmt, int chans, int ofs, int len, value buf) { int c, i; if (fmt & paFloat32) { if (fmt & paNonInterleaved) GET_BUFFER_NI(float, Double_field(bufc, ofs + i)) else GET_BUFFER(float, Double_field(bufc, ofs + i)) } else if (fmt & paInt32 || fmt & paInt24) { if (fmt & paNonInterleaved) GET_BUFFER_NI(int32_t, Int32_val(Field(bufc, ofs + i))) else GET_BUFFER(int32_t, Int32_val(Field(bufc, ofs + i))) } else if (fmt & paInt16) { if (fmt & paNonInterleaved) GET_BUFFER_NI(short, Int_val(Field(bufc, ofs + i))) else GET_BUFFER(short, Int_val(Field(bufc, ofs + i))) } else if (fmt & paInt8) { if (fmt & paNonInterleaved) GET_BUFFER_NI(char, Int_val(Field(bufc, ofs + i))) else GET_BUFFER(char, Int_val(Field(bufc, ofs + i))) } else return NULL; } void *get_read_buffer(int fmt, int chans, int len) { int size = 0; if (fmt & paFloat32) { size = sizeof(float); } else if (fmt & paInt32 || fmt & paInt24) { size = sizeof(int32_t); } else if (fmt & paInt16) { size = sizeof(short); } else if (fmt & paInt8) { size = sizeof(char); } if (size == 0) return NULL; if (fmt & paNonInterleaved) { void **buf = malloc(chans * sizeof(void *)); int i; for (i = 0; i < chans; ++i) buf[i] = malloc(len * size); return buf; } return malloc(chans * len * size); } #define COPY_BUFFER(type, store, elem) \ type *buf = inbuf; \ for (c = 0; c < chans; c++) { \ value bufc = Field(_buf, c); \ for (i = 0; i < len; i++) \ store(bufc, ofs + i, elem(buf[get_index(fmt, chans, len, c, i)])); \ } void ocaml_portaudio_copy_buffer(void *inbuf, int fmt, int chans, int ofs, int len, value _buf) { int c, i; if (fmt & paFloat32) { COPY_BUFFER(float, Store_double_field, (float)) } else if (fmt & paInt32 || fmt & paInt24) { COPY_BUFFER(int32_t, Store_field, caml_copy_int32) } else if (fmt & paInt16) { COPY_BUFFER(short, Store_field, Val_int); } else if (fmt & paInt8) { COPY_BUFFER(char, Store_field, Val_int); } } CAMLprim value ocaml_pa_write_stream(value _stream, value _buf, value _ofs, value _len) { CAMLparam2(_stream, _buf); PaStream *stream = Stream_val(_stream); int ofs = Int_val(_ofs); int len = Int_val(_len); PaError ret; void *buf; int chans = Stream_t_val(_stream)->channels_out; int format = Stream_t_val(_stream)->sample_format_out; buf = get_buffer(format, chans, ofs, len, _buf); caml_enter_blocking_section(); ret = Pa_WriteStream(stream, buf, len); caml_leave_blocking_section(); free(buf); cerr(ret); CAMLreturn(Val_unit); } CAMLprim value ocaml_pa_read_stream(value _stream, value _buf, value _ofs, value _len) { CAMLparam2(_stream, _buf); PaStream *stream = Stream_val(_stream); int ofs = Int_val(_ofs); int len = Int_val(_len); PaError ret; void *buf; int chans = Stream_t_val(_stream)->channels_in; int format = Stream_t_val(_stream)->sample_format_in; buf = get_read_buffer(format, chans, len); caml_enter_blocking_section(); ret = Pa_ReadStream(stream, buf, len); caml_leave_blocking_section(); ocaml_portaudio_copy_buffer(buf, format, chans, ofs, len, _buf); free(buf); cerr(ret); CAMLreturn(Val_unit); } void *get_buffer_ba(int fmt, int chans, int ofs, value buf) { int dim; dim = Caml_ba_array_val(buf)->dim[0]; if (fmt & paFloat32) { float *bufi = Caml_ba_data_val(buf); return bufi + chans * ofs; } else if (fmt & paInt32 || fmt & paInt24) { int32_t *bufi = Caml_ba_data_val(buf); return bufi + chans * ofs; } else if (fmt & paInt16) { short *bufi = Caml_ba_data_val(buf); return bufi + chans * ofs; } else if (fmt & paInt8) { char *bufi = Caml_ba_data_val(buf); return bufi + chans * ofs; } else return NULL; } #define GET_BUFFER_BA(type) \ type *bufi = Caml_ba_data_val(buf); \ type **bufo = malloc(chans * sizeof(type *)); \ for (c = 0; c < chans; c++) { \ bufo[c] = bufi + c * dim + ofs; \ } \ return bufo; void *get_buffer_ba_ni(int fmt, int chans, int ofs, value buf) { int num_dims; int dim; int c; num_dims = Caml_ba_array_val(buf)->num_dims; dim = Caml_ba_array_val(buf)->dim[(num_dims - 1)]; if (fmt & paFloat32) { GET_BUFFER_BA(float) } else if (fmt & paInt32 || fmt & paInt24) { GET_BUFFER_BA(int32_t) } else if (fmt & paInt16) { GET_BUFFER_BA(short) } else if (fmt & paInt8) { GET_BUFFER_BA(char) } else return NULL; } CAMLprim value ocaml_pa_write_stream_ba(value _stream, value _buf, value _ofs, value _len) { CAMLparam2(_stream, _buf); PaStream *stream = Stream_val(_stream); int ofs = Int_val(_ofs); int len = Int_val(_len); PaError ret; void *buf; int chans = Stream_t_val(_stream)->channels_out; int format = Stream_t_val(_stream)->sample_format_out; if (format & paNonInterleaved) buf = get_buffer_ba_ni(format, chans, ofs, _buf); else buf = get_buffer_ba(format, chans, ofs, _buf); caml_enter_blocking_section(); ret = Pa_WriteStream(stream, buf, len); if (format & paNonInterleaved) free(buf); caml_leave_blocking_section(); cerr(ret); CAMLreturn(Val_unit); } CAMLprim value ocaml_pa_read_stream_ba(value _stream, value _buf, value _ofs, value _len) { CAMLparam2(_stream, _buf); PaStream *stream = Stream_val(_stream); int ofs = Int_val(_ofs); int len = Int_val(_len); PaError ret; void *buf; int chans = Stream_t_val(_stream)->channels_in; int format = Stream_t_val(_stream)->sample_format_in; if (format & paNonInterleaved) buf = get_buffer_ba_ni(format, chans, ofs, _buf); else buf = get_buffer_ba(format, chans, ofs, _buf); caml_enter_blocking_section(); ret = Pa_ReadStream(stream, buf, len); if (format & paNonInterleaved) free(buf); caml_leave_blocking_section(); cerr(ret); CAMLreturn(Val_unit); }