#lang racket/base


(require ffi/unsafe
         ffi/unsafe/define
         "private/utils.rkt"
         "libao-ffi.rkt"
         )

(provide ao_create_async
         ao_stop_async
         ao_play_async
         ao_is_at_second_async
         ao_music_duration_async
         ao_bufsize_async
         ao_clear_async
         ao_pause_async
         make-BufferInfo_t
         )

(define _BufferType_t
  (_enum '(ao = 1
           flac = 2
           mpg123 = 3
           ao_ogg = 4
           )))

;#define AO_FMT_LITTLE 1
;#define AO_FMT_BIG    2
;#define AO_FMT_NATIVE 4

(define _Endian_t
  (_enum '(little-endian = 1
           big-endian    = 2
           native-endian = 4
           )
         )
  )

(define-cstruct _BufferInfo_t
  (
   [type _BufferType_t]
   [sample_bits _int]
   [sample_rate _int]
   [channels _int]
   [endiannes _Endian_t]
   ))


(define lib (get-lib '("ao-play-async" "libao-play-async") '(#f)))
;(define lib (ffi-lib "/home/hans/src/racket/racket-sound-lib/lib/linux-x86_64/libao-play-async.so"))
(define-ffi-definer define-libao-async lib
  #:default-make-fail make-not-available)

(define _libao-async-handle-pointer (_cpointer 'ao-async-handle))

;extern int ao_async_version()
(define-libao-async ao_async_version (_fun -> _int))

;extern void *ao_create_async(void *ao_device, );
(define-libao-async ao_create_async(_fun _pointer _fpointer -> _libao-async-handle-pointer))

;extern void ao_stop_async(void *handle);
(define-libao-async ao_stop_async(_fun _libao-async-handle-pointer -> _void))

;extern void ao_play_async(void *handle, double at_second, double music_duration, int buf_size, void *mem, BufferInfo_t info);
(define-libao-async ao_play_async(_fun _libao-async-handle-pointer _double _double _uint32 _pointer _BufferInfo_t -> _void))

;extern double ao_is_at_second_async(void *handle);
(define-libao-async ao_is_at_second_async(_fun _libao-async-handle-pointer -> _double))

;extern double ao_music_duration_async(void *handle);
(define-libao-async ao_music_duration_async(_fun _libao-async-handle-pointer -> _double))

;extern int ao_bufsize_async(void *handle);
(define-libao-async ao_bufsize_async(_fun _libao-async-handle-pointer -> _int))

;extern void ao_clear_async(void *handle);
(define-libao-async ao_clear_async(_fun _libao-async-handle-pointer -> _void))

;extern void ao_pause_async(void *handle, int pause);
(define-libao-async ao_pause_async(_fun _libao-async-handle-pointer _int -> _void))