dynamic_fluidsynth.c
author Ozkan Sezer <sezeroz@gmail.com>
Sat, 13 Oct 2018 23:02:04 +0300
branchSDL-1.2
changeset 908 6b860486ce24
parent 518 8bc9b5fd2aae
child 601 05123263dab3
permissions -rw-r--r--
Mix_InitMP3: unload dll if mpg123_init() fails.
     1 /*
     2   SDL_mixer:  An audio mixer library based on the SDL library
     3   Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 
    21   James Le Cuirot
    22   chewi@aura-online.co.uk
    23 */
    24 
    25 #ifdef USE_FLUIDSYNTH_MIDI
    26 
    27 #include "SDL_loadso.h"
    28 #include "dynamic_fluidsynth.h"
    29 
    30 fluidsynth_loader fluidsynth = {
    31 	0, NULL
    32 };
    33 
    34 #ifdef FLUIDSYNTH_DYNAMIC
    35 #define FLUIDSYNTH_LOADER(FUNC, SIG) \
    36 	fluidsynth.FUNC = (SIG) SDL_LoadFunction(fluidsynth.handle, #FUNC); \
    37 	if (fluidsynth.FUNC == NULL) { SDL_UnloadObject(fluidsynth.handle); return -1; }
    38 #else
    39 #define FLUIDSYNTH_LOADER(FUNC, SIG) \
    40 	fluidsynth.FUNC = FUNC;
    41 #endif
    42 
    43 int Mix_InitFluidSynth()
    44 {
    45 	if ( fluidsynth.loaded == 0 ) {
    46 #ifdef FLUIDSYNTH_DYNAMIC
    47 		fluidsynth.handle = SDL_LoadObject(FLUIDSYNTH_DYNAMIC);
    48 		if ( fluidsynth.handle == NULL ) return -1;
    49 #endif
    50 
    51 		FLUIDSYNTH_LOADER(delete_fluid_player, int (*)(fluid_player_t*));
    52 		FLUIDSYNTH_LOADER(delete_fluid_settings, void (*)(fluid_settings_t*));
    53 		FLUIDSYNTH_LOADER(delete_fluid_synth, int (*)(fluid_synth_t*));
    54 		FLUIDSYNTH_LOADER(fluid_player_add, int (*)(fluid_player_t*, const char*));
    55 		FLUIDSYNTH_LOADER(fluid_player_add_mem, int (*)(fluid_player_t*, const void*, size_t));
    56 		FLUIDSYNTH_LOADER(fluid_player_get_status, int (*)(fluid_player_t*));
    57 		FLUIDSYNTH_LOADER(fluid_player_play, int (*)(fluid_player_t*));
    58 		FLUIDSYNTH_LOADER(fluid_player_set_loop, int (*)(fluid_player_t*, int));
    59 		FLUIDSYNTH_LOADER(fluid_player_stop, int (*)(fluid_player_t*));
    60 		FLUIDSYNTH_LOADER(fluid_settings_setnum, int (*)(fluid_settings_t*, const char*, double));
    61 		FLUIDSYNTH_LOADER(fluid_synth_get_settings, fluid_settings_t* (*)(fluid_synth_t*));
    62 		FLUIDSYNTH_LOADER(fluid_synth_set_gain, void (*)(fluid_synth_t*, float));
    63 		FLUIDSYNTH_LOADER(fluid_synth_sfload, int(*)(fluid_synth_t*, const char*, int));
    64 		FLUIDSYNTH_LOADER(fluid_synth_write_s16, int(*)(fluid_synth_t*, int, void*, int, int, void*, int, int));
    65 		FLUIDSYNTH_LOADER(new_fluid_player, fluid_player_t* (*)(fluid_synth_t*));
    66 		FLUIDSYNTH_LOADER(new_fluid_settings, fluid_settings_t* (*)(void));
    67 		FLUIDSYNTH_LOADER(new_fluid_synth, fluid_synth_t* (*)(fluid_settings_t*));
    68 	}
    69 	++fluidsynth.loaded;
    70 
    71 	return 0;
    72 }
    73 
    74 void Mix_QuitFluidSynth()
    75 {
    76 	if ( fluidsynth.loaded == 0 ) {
    77 		return;
    78 	}
    79 	if ( fluidsynth.loaded == 1 ) {
    80 #ifdef FLUIDSYNTH_DYNAMIC
    81 		SDL_UnloadObject(fluidsynth.handle);
    82 #endif
    83 	}
    84 	--fluidsynth.loaded;
    85 }
    86 
    87 #endif /* USE_FLUIDSYNTH_MIDI */