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open Avutil
external init : unit -> unit = "ocaml_avdevice_init" [@@noalloc]
let init_done = ref false
let () =
if not !init_done then init ();
init_done := true
let hd = function [] -> raise Not_found | x :: _ -> x
external get_audio_input_formats : unit -> (input, audio) format array
= "ocaml_avdevice_get_audio_input_formats"
let get_audio_input_formats () = Array.to_list (get_audio_input_formats ())
let get_default_audio_input_format () = hd (get_audio_input_formats ())
external get_video_input_formats : unit -> (input, video) format array
= "ocaml_avdevice_get_video_input_formats"
let get_video_input_formats () = Array.to_list (get_video_input_formats ())
let get_default_video_input_format () = hd (get_video_input_formats ())
external get_audio_output_formats : unit -> (output, audio) format array
= "ocaml_avdevice_get_audio_output_formats"
let get_audio_output_formats () = Array.to_list (get_audio_output_formats ())
let get_default_audio_output_format () = hd (get_audio_output_formats ())
external get_video_output_formats : unit -> (output, video) format array
= "ocaml_avdevice_get_video_output_formats"
let get_video_output_formats () = Array.to_list (get_video_output_formats ())
let get_default_video_output_format () = hd (get_video_output_formats ())
let find_input name fmts =
try List.find (fun d -> Av.Format.get_input_name d = name) fmts
with Not_found ->
raise (Error (`Failure ("Input device not found : " ^ name)))
let find_audio_input name = find_input name (get_audio_input_formats ())
let find_video_input name = find_input name (get_video_input_formats ())
let find_output name fmts =
try List.find (fun d -> Av.Format.get_output_name d = name) fmts
with Not_found ->
raise (Error (`Failure ("Output device not found : " ^ name)))
let find_audio_output name = find_output name (get_audio_output_formats ())
let find_video_output name = find_output name (get_video_output_formats ())
let open_audio_input name = Av.open_input ~format:(find_audio_input name) ""
let open_default_audio_input () =
Av.open_input ~format:(get_default_audio_input_format ()) ""
let open_video_input name = Av.open_input ~format:(find_video_input name) ""
let open_default_video_input () =
Av.open_input ~format:(get_default_video_input_format ()) ""
external open_output_format :
(output, _) format ->
bool ->
(string * string) array ->
output container * string array = "ocaml_av_open_output_format"
let _opt_val = function
| `String s -> s
| `Int i -> string_of_int i
| `Int64 i -> Int64.to_string i
| `Float f -> string_of_float f
let mk_opts = function
| None -> [||]
| Some opts ->
Array.of_list
(Hashtbl.fold
(fun opt_name opt_val cur -> (opt_name, _opt_val opt_val) :: cur)
opts [])
let filter_opts unused = function
| None -> ()
| Some opts ->
Hashtbl.filter_map_inplace
(fun k v -> if Array.mem k unused then Some v else None)
opts
let open_audio_output ?(interleaved = true) ?opts name =
let ret, unused =
open_output_format (find_audio_output name) interleaved (mk_opts opts)
in
filter_opts unused opts;
ret
let open_default_audio_output ?(interleaved = true) ?opts () =
let ret, unused =
open_output_format
(get_default_audio_output_format ())
interleaved (mk_opts opts)
in
filter_opts unused opts;
ret
let open_video_output ?(interleaved = true) ?opts name =
let ret, unused =
open_output_format (find_video_output name) interleaved (mk_opts opts)
in
filter_opts unused opts;
ret
let open_default_video_output ?(interleaved = true) ?opts () =
let ret, unused =
open_output_format
(get_default_video_output_format ())
interleaved (mk_opts opts)
in
filter_opts unused opts;
ret
module App_to_dev = struct
type message =
| None
| Window_size of int * int * int * int
| Window_repaint of int * int * int * int
| Pause
| Play
| Toggle_pause
| Set_volume of float
| Mute
| Unmute
| Toggle_mute
| Get_volume
| Get_mute
external control_message : message -> _ container -> unit
= "ocaml_avdevice_app_to_dev_control_message"
let control_messages messages av =
List.iter (fun msg -> control_message msg av) messages
end
module Dev_to_app = struct
type message =
| None
| Create_window_buffer of (int * int * int * int) option
| Prepare_window_buffer
| Display_window_buffer
| Destroy_window_buffer
| Buffer_overflow
| Buffer_underflow
| Buffer_readable of Int64.t option
| Buffer_writable of Int64.t option
| Mute_state_changed of bool
| Volume_level_changed of float
external set_control_message_callback :
(message -> unit) -> _ container -> unit
= "ocaml_avdevice_set_control_message_callback"
end
|
