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-rw-r--r--sdl2/bindings/mixer.scm131
1 files changed, 131 insertions, 0 deletions
diff --git a/sdl2/bindings/mixer.scm b/sdl2/bindings/mixer.scm
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+;;; guile-sdl2 --- FFI bindings for SDL2
+;;; Copyright © 2015 David Thompson <davet@gnu.org>
+;;;
+;;; This file is part of guile-sdl2.
+;;;
+;;; Guile-sdl2 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 3 of the
+;;; License, or (at your option) any later version.
+;;;
+;;; Guile-sdl2 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 guile-sdl2. If not, see
+;;; <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; Low-level FFI bindings for SDL2_mixer.
+;;
+;;; Code:
+
+(define-module (sdl2 bindings mixer)
+ #:use-module (rnrs bytevectors)
+ #:use-module (system foreign)
+ #:use-module (sdl2 config)
+ #:use-module (sdl2 bindings))
+
+(define sdl-mixer-func
+ (let ((lib (dynamic-link %libsdl2-mixer)))
+ (lambda (return-type function-name arg-types)
+ "Return a procedure for the foreign function FUNCTION-NAME in
+the SDL2_mixer shared library. That function must return a value of
+RETURN-TYPE and accept arguments of ARG-TYPES."
+ (pointer->procedure return-type
+ (dynamic-func function-name lib)
+ arg-types))))
+
+(define-syntax-rule (define-foreign name return-type func-name arg-types)
+ (define-public name
+ (sdl-mixer-func return-type func-name arg-types)))
+
+(define-public MIX_INIT_FLAC #x00000001)
+(define-public MIX_INIT_MOD #x00000002)
+(define-public MIX_INIT_MODPLUG #x00000004)
+(define-public MIX_INIT_MP3 #x00000008)
+(define-public MIX_INIT_OGG #x00000010)
+(define-public MIX_INIT_FLUIDSYNTH #x00000020)
+
+(define-public MIX_CHANNELS 8)
+(define-public MIX_DEFAULT_FREQUENCY 22050)
+(define-public MIX_MAX_VOLUME 128)
+(define-public MIX_DEFAULT_FORMAT
+ (if (eq? (native-endianness) 'little)
+ AUDIO_S16LSB
+ AUDIO_S16MSB))
+
+(define-foreign mix-init
+ int "Mix_Init" (list int))
+
+(define-foreign mix-quit
+ void "Mix_Quit" '())
+
+(define-foreign mix-open-audio
+ int "Mix_OpenAudio" (list int uint16 int int))
+
+(define-foreign mix-close-audio
+ void "Mix_CloseAudio" '())
+
+(define-foreign mix-load-wav-rw
+ '* "Mix_LoadWAV_RW" (list '* int))
+
+(define-foreign mix-free-chunk
+ void "Mix_FreeChunk" '(*))
+
+(define-foreign mix-volume-chunk
+ int "Mix_VolumeChunk" (list '* int))
+
+(define-foreign mix-volume
+ int "Mix_Volume" (list int int))
+
+(define-foreign mix-play-channel-timed
+ int "Mix_PlayChannelTimed" (list int '* int int))
+
+(define-foreign mix-pause
+ void "Mix_Pause" (list int))
+
+(define-foreign mix-resume
+ void "Mix_Resume" (list int))
+
+(define-foreign mix-halt-channel
+ void "Mix_HaltChannel" (list int))
+
+(define-foreign mix-playing
+ int "Mix_Playing" (list int))
+
+(define-foreign mix-paused
+ int "Mix_Paused" (list int))
+
+(define-foreign mix-load-mus
+ '* "Mix_LoadMUS" '(*))
+
+(define-foreign mix-free-music
+ void "Mix_FreeMusic" '(*))
+
+(define-foreign mix-play-music
+ int "Mix_PlayMusic" (list '* int))
+
+(define-foreign mix-volume-music
+ int "Mix_VolumeMusic" (list int))
+
+(define-foreign mix-pause-music
+ void "Mix_PauseMusic" '())
+
+(define-foreign mix-resume-music
+ void "Mix_ResumeMusic" '())
+
+(define-foreign mix-rewind-music
+ void "Mix_RewindMusic" '())
+
+(define-foreign mix-halt-music
+ void "Mix_HaltMusic" '())
+
+(define-foreign mix-playing-music
+ int "Mix_PlayingMusic" '())
+
+(define-foreign mix-paused-music
+ int "Mix_PausedMusic" '())