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Diffstat (limited to 'engines/sci/sfx/sfx_engine.h')
| -rw-r--r-- | engines/sci/sfx/sfx_engine.h | 166 |
1 files changed, 166 insertions, 0 deletions
diff --git a/engines/sci/sfx/sfx_engine.h b/engines/sci/sfx/sfx_engine.h new file mode 100644 index 0000000000..60893e550f --- /dev/null +++ b/engines/sci/sfx/sfx_engine.h @@ -0,0 +1,166 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program 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 General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +/* Sound engine */ +#ifndef _SFX_ENGINE_H_ +#define _SFX_ENGINE_H_ + +#include "sci/sfx/sfx_core.h" +#include "sci/sfx/sfx_songlib.h" +#include "sci/sfx/sfx_iterator.h" +#include "sci/include/sciresource.h" + +namespace Sci { + +#define SOUND_TICK 1000000 / 60 +/* Approximately 16666 microseconds */ + + +#define SFX_STATE_FLAG_MULTIPLAY (1 << 0) /* More than one song playable +** simultaneously ? */ +#define SFX_STATE_FLAG_NOSOUND (1 << 1) /* Completely disable sound playing */ + + +#define SFX_DEBUG_SONGS (1 << 0) /* Debug song changes */ +#define SFX_DEBUG_CUES (1 << 1) /* Debug cues, loops, and +** song completions */ + +typedef struct { + song_iterator_t *it; /* The song iterator at the heart of things */ + unsigned int flags; /* SFX_STATE_FLAG_* */ + songlib_t songlib; /* Song library */ + song_t *song; /* Active song, or start of active song chain */ + int suspended; /* Whether we are suspended */ + unsigned int debug; /* Debug flags */ + +} sfx_state_t; + +/***********/ +/* General */ +/***********/ + +void sfx_init(sfx_state_t *self, ResourceManager *resmgr, int flags); +/* Initializes the sound engine +** Parameters: (ResourceManager *) resmgr: Resource manager for initialization +** (int) flags: SFX_STATE_FLAG_* +*/ + +void sfx_exit(sfx_state_t *self); +/* Deinitializes the sound subsystem +*/ + +void sfx_suspend(sfx_state_t *self, int suspend); +/* Suspends/unsuspends the sound sybsystem +** Parameters: (int) suspend: Whether to suspend (non-null) or to unsuspend +*/ + +int sfx_poll(sfx_state_t *self, song_handle_t *handle, int *cue); +/* Polls the sound server for cues etc. +** Returns : (int) 0 if the cue queue is empty, SI_LOOP, SI_CUE, or SI_FINISHED otherwise +** (song_handle_t) *handle: The affected handle +** (int) *cue: The sound cue number (if SI_CUE), or the loop number (if SI_LOOP) +*/ + +int sfx_poll_specific(sfx_state_t *self, song_handle_t handle, int *cue); +/* Polls the sound server for cues etc. +** Parameters: (song_handle_t) handle: The handle to poll +** Returns : (int) 0 if the cue queue is empty, SI_LOOP, SI_CUE, or SI_FINISHED otherwise +** (int) *cue: The sound cue number (if SI_CUE), or the loop number (if SI_LOOP) +*/ + +int sfx_get_volume(sfx_state_t *self); +/* Determines the current global volume settings +** Returns : (int) The global volume, between 0 (silent) and 127 (max. volume) +*/ + +void sfx_set_volume(sfx_state_t *self, int volume); +/* Determines the current global volume settings +** Parameters: (int) volume: The new global volume, between 0 and 127 (see above) +*/ + +void sfx_all_stop(sfx_state_t *self); +/* Stops all songs currently playing, purges song library +*/ + + +/*****************/ +/* Song basics */ +/*****************/ + +int sfx_add_song(sfx_state_t *self, song_iterator_t *it, int priority, song_handle_t handle, int resnum); +/* Adds a song to the internal sound library +** Parameters: (song_iterator_t *) it: The iterator describing the song +** (int) priority: Initial song priority (higher <-> more important) +** (song_handle_t) handle: The handle to associate with the song +** Returns : (int) 0 on success, nonzero on error +*/ + + +void sfx_remove_song(sfx_state_t *self, song_handle_t handle); +/* Deletes a song and its associated song iterator from the song queue +** Parameters: (song_handle_t) handle: The song to remove +*/ + + +/**********************/ +/* Song modifications */ +/**********************/ + + +void sfx_song_set_status(sfx_state_t *self, song_handle_t handle, int status); +/* Sets the song status, i.e. whether it is playing, suspended, or stopped. +** Parameters: (song_handle_t) handle: Handle of the song to modify +** (int) status: The song status the song should assume +** WAITING and PLAYING are set implicitly and essentially describe the same state +** as far as this function is concerned. +*/ + +void sfx_song_renice(sfx_state_t *self, song_handle_t handle, int priority); +/* Sets the new song priority +** Parameters: (song_handle_t) handle: The handle to modify +** (int) priority: The priority to set +*/ + +void sfx_song_set_loops(sfx_state_t *self, song_handle_t handle, int loops); +/* Sets the number of loops for the specified song +** Parameters: (song_handle_t) handle: The song handle to reference +** (int) loops: Number of loops to set +*/ + +void sfx_song_set_hold(sfx_state_t *self, song_handle_t handle, int hold); +/* Sets the number of loops for the specified song +** Parameters: (song_handle_t) handle: The song handle to reference +** (int) hold: Number of loops to setn +*/ + +void sfx_song_set_fade(sfx_state_t *self, song_handle_t handle, fade_params_t *fade_setup); +/* Instructs a song to be faded out +** Parameters: (song_handle_t) handle: The song handle to reference +** (fade_params_t *) fade_setup: The precise fade-out configuration to use +*/ + +} // End of namespace Sci + +#endif /* !defined(_SFX_ENGINE_H_) */ |