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|
/* 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 subsystem core: Event handler, sound player dispatching */
#include <stdio.h>
#include "sci/include/sfx_timer.h"
#include "sci/include/sfx_iterator_internal.h"
#include "sci/include/sfx_player.h"
#include "sci/sfx/mixer.h"
#include "sci/include/sci_midi.h"
#include "common/mutex.h"
namespace Sci {
/*#define DEBUG_SONG_API*/
/*#define DEBUG_CUES*/
#ifdef DEBUG_CUES
int sciprintf(char *msg, ...);
#endif
static sfx_player_t *player = NULL;
sfx_pcm_mixer_t *mixer = NULL;
static sfx_pcm_device_t *pcm_device = NULL;
static sfx_timer_t *timer = NULL;
extern sfx_timer_t sfx_timer_scummvm;
extern sfx_pcm_device_t sfx_pcm_driver_scummvm;
Common::Mutex* callbackMutex;
#define MILLION 1000000
int
sfx_pcm_available() {
return (pcm_device != NULL);
}
void
sfx_reset_player(void) {
if (player)
player->stop();
}
tell_synth_func *
sfx_get_player_tell_func(void) {
if (player)
return player->tell_synth;
else
return NULL;
}
int
sfx_get_player_polyphony(void) {
if (player)
return player->polyphony;
else
return 0;
}
static long
time_minus(GTimeVal t1, GTimeVal t2) {
return (t1.tv_sec - t2.tv_sec) * MILLION
+ (t1.tv_usec - t2.tv_usec);
}
static GTimeVal
time_plus(GTimeVal t1, long delta) {
if (delta > 0)
t1.tv_usec += delta % MILLION;
else
t1.tv_usec -= (-delta) % MILLION;
t1.tv_sec += delta / MILLION;
if (t1.tv_usec > MILLION) {
t1.tv_sec++;
t1.tv_usec -= MILLION;
}
return t1;
}
static void
_freeze_time(sfx_state_t *self) {
/* Freezes the top song delay time */
GTimeVal ctime;
long delta;
song_t *song = self->song;
sci_get_current_time(&ctime);
while (song) {
delta = time_minus(song->wakeup_time, ctime);
if (delta < 0)
delta = 0;
song->delay = delta;
song = song->next_playing;
}
}
#if 0
// Unreferenced - removed
static void
_dump_playing_list(sfx_state_t *self, char *msg) {
song_t *song = self->song;
warning("[] Song list : [ ");
song = *(self->songlib.lib);
while (song) {
warning("%08lx:%d ", song->handle, song->status);
song = song->next_playing;
}
warning("]\n");
warning("[] Play list (%s) : [ " , msg);
while (song) {
warning("%08lx ", song->handle);
song = song->next_playing;
}
warning("]\n");
}
#endif
static void
_dump_songs(sfx_state_t *self) {
#if 0
song_t *song = self->song;
warning("Cue iterators:\n");
song = *(self->songlib.lib);
while (song) {
warning(" **\tHandle %08x (p%d): status %d\n",
song->handle, song->priority, song->status);
SIMSG_SEND(song->it, SIMSG_PRINT(1));
song = song->next;
}
if (player) {
warning("Audio iterator:\n");
player->iterator_message(songit_make_message(0, SIMSG_PRINT(1)));
}
#endif
}
static void
_thaw_time(sfx_state_t *self) {
/* inverse of _freeze_time() */
GTimeVal ctime;
song_t *song = self->song;
sci_get_current_time(&ctime);
while (song) {
song->wakeup_time = time_plus(ctime, song->delay);
song = song->next_playing;
}
}
static int
is_playing(sfx_state_t *self, song_t *song) {
song_t *playing_song = self->song;
/* _dump_playing_list(self, "is-playing");*/
while (playing_song) {
if (playing_song == song)
return 1;
playing_song = playing_song->next_playing;
}
return 0;
}
static void
_sfx_set_song_status(sfx_state_t *self, song_t *song, int status) {
switch (status) {
case SOUND_STATUS_STOPPED:
/* Reset */
song->it->init(song->it);
break;
case SOUND_STATUS_SUSPENDED:
case SOUND_STATUS_WAITING:
if (song->status == SOUND_STATUS_PLAYING) {
/* Update delay, set wakeup_time */
GTimeVal time;
long delta;
sci_get_current_time(&time);
delta = time_minus(time, song->wakeup_time);
song->delay -= delta;
song->wakeup_time = time;
}
if (status == SOUND_STATUS_SUSPENDED)
break;
/* otherwise... */
case SOUND_STATUS_PLAYING:
if (song->status == SOUND_STATUS_STOPPED)
/* Starting anew */
sci_get_current_time(&song->wakeup_time);
if (is_playing(self, song))
status = SOUND_STATUS_PLAYING;
else
status = SOUND_STATUS_WAITING;
break;
default:
warning("%s L%d: Attempt to set invalid song"
" state %d", __FILE__, __LINE__, status);
return;
}
song->status = status;
}
/* Update internal state iff only one song may be played */
static void
_update_single_song(sfx_state_t *self) {
song_t *newsong = song_lib_find_active(self->songlib);
if (newsong != self->song) {
_freeze_time(self); /* Store song delay time */
if (player)
player->stop();
if (newsong) {
if (!newsong->it)
return; /* Restore in progress and not ready for this yet */
/* Change song */
if (newsong->status == SOUND_STATUS_WAITING)
_sfx_set_song_status(self, newsong,
SOUND_STATUS_PLAYING);
/* Change instrument mappings */
} else {
/* Turn off sound */
}
if (self->song) {
if (self->song->status == SOUND_STATUS_PLAYING)
_sfx_set_song_status(self, newsong,
SOUND_STATUS_WAITING);
}
if (self->debug & SFX_DEBUG_SONGS) {
sciprintf("[SFX] Changing active song:");
if (!self->song)
sciprintf(" New song:");
else
sciprintf(" pausing %08lx, now playing",
self->song->handle);
if (newsong)
sciprintf(" %08lx\n", newsong->handle);
else
sciprintf(" none\n");
}
self->song = newsong;
_thaw_time(self); /* Recover song delay time */
if (newsong && player) {
song_iterator_t *clonesong
= songit_clone(newsong->it, newsong->delay);
player->add_iterator(clonesong,
newsong->wakeup_time);
}
}
}
static void
_update_multi_song(sfx_state_t *self) {
song_t *oldfirst = self->song;
song_t *oldseeker;
song_t *newsong = song_lib_find_active(self->songlib);
song_t *newseeker;
song_t not_playing_anymore; /* Dummy object, referenced by
** songs which are no longer
** active. */
GTimeVal tv;
sci_get_current_time(&tv);
/* _dump_playing_list(self, "before");*/
_freeze_time(self); /* Store song delay time */
for (newseeker = newsong; newseeker;
newseeker = newseeker->next_playing) {
if (!newseeker->it)
return; /* Restore in progress and not ready for this yet */
}
/* First, put all old songs into the 'stopping' list and
** mark their 'next-playing' as not_playing_anymore. */
for (oldseeker = oldfirst; oldseeker;
oldseeker = oldseeker->next_stopping) {
oldseeker->next_stopping = oldseeker->next_playing;
oldseeker->next_playing = ¬_playing_anymore;
if (oldseeker == oldseeker->next_playing) { BREAKPOINT(); }
}
/* Second, re-generate the new song queue. */
for (newseeker = newsong; newseeker;
newseeker = newseeker->next_playing) {
newseeker->next_playing
= song_lib_find_next_active(self->songlib,
newseeker);
if (newseeker == newseeker->next_playing) { BREAKPOINT(); }
}
/* We now need to update the currently playing song list, because we're
** going to use some functions that require this list to be in a sane
** state (particularly is_playing(), indirectly */
self->song = newsong;
/* Third, stop all old songs */
for (oldseeker = oldfirst; oldseeker;
oldseeker = oldseeker->next_stopping)
if (oldseeker->next_playing == ¬_playing_anymore) {
_sfx_set_song_status(self, oldseeker,
SOUND_STATUS_SUSPENDED);
if (self->debug & SFX_DEBUG_SONGS) {
sciprintf("[SFX] Stopping song %lx\n", oldseeker->handle);
}
if (player && oldseeker->it)
player->iterator_message
(songit_make_message(oldseeker->it->ID, SIMSG_STOP));
oldseeker->next_playing = NULL; /* Clear this pointer; we don't need the tag anymore */
}
for (newseeker = newsong; newseeker;
newseeker = newseeker->next_playing) {
if (newseeker->status != SOUND_STATUS_PLAYING && player) {
if (self->debug & SFX_DEBUG_SONGS)
sciprintf("[SFX] Adding song %lx\n", newseeker->it->ID);
player->add_iterator(songit_clone(newseeker->it,
newseeker->delay),
tv);
}
_sfx_set_song_status(self, newseeker,
SOUND_STATUS_PLAYING);
}
self->song = newsong;
_thaw_time(self);
/* _dump_playing_list(self, "after");*/
}
/* Update internal state */
static void
_update(sfx_state_t *self) {
if (self->flags & SFX_STATE_FLAG_MULTIPLAY)
_update_multi_song(self);
else
_update_single_song(self);
}
static int _sfx_timer_active = 0; /* Timer toggle */
int
sfx_play_iterator_pcm(song_iterator_t *it, song_handle_t handle) {
#ifdef DEBUG_SONG_API
warning("[sfx-core] Playing PCM: %08lx\n", handle);
#endif
if (mixer) {
sfx_pcm_feed_t *newfeed = it->get_pcm_feed(it);
if (newfeed) {
newfeed->debug_nr = (int) handle;
mixer->subscribe(mixer, newfeed);
return 1;
}
}
return 0;
}
static void
_sfx_timer_callback(void *data) {
if (_sfx_timer_active) {
Common::StackLock lock(*callbackMutex);
/* First run the player, to give it a chance to fill
** the audio buffer */
if (player)
player->maintenance();
assert(_sfx_timer_active);
if (mixer)
mixer->process(mixer);
}
}
void
sfx_init(sfx_state_t *self, ResourceManager *resmgr, int flags) {
callbackMutex = new Common::Mutex();
song_lib_init(&self->songlib);
self->song = NULL;
self->flags = flags;
self->debug = 0; /* Disable all debugging by default */
if (flags & SFX_STATE_FLAG_NOSOUND) {
mixer = NULL;
pcm_device = NULL;
player = NULL;
sciprintf("[SFX] Sound disabled.\n");
return;
}
mixer = getMixer();
pcm_device = &sfx_pcm_driver_scummvm;
player = sfx_find_player(NULL);
#ifdef DEBUG_SONG_API
warning("[sfx-core] Initialising: flags=%x\n", flags);
#endif
/*------------------*/
/* Initialise timer */
/*------------------*/
if (pcm_device || player->maintenance) {
timer = &sfx_timer_scummvm;
if (!timer) {
warning("[SFX] " __FILE__": Could not find timing mechanism\n");
warning("[SFX] Disabled sound support\n");
pcm_device = NULL;
player = NULL;
mixer = NULL;
return;
}
if (timer->init(_sfx_timer_callback, NULL)) {
warning("[SFX] " __FILE__": Timer failed to initialize\n");
warning("[SFX] Disabled sound support\n");
timer = NULL;
pcm_device = NULL;
player = NULL;
mixer = NULL;
return;
}
} /* With no PCM device and no player, we don't need a timer */
/*----------------*/
/* Initialise PCM */
/*----------------*/
if (!pcm_device) {
sciprintf("[SFX] No PCM device found, disabling PCM support\n");
mixer = NULL;
} else {
if (pcm_device->init(pcm_device)) {
sciprintf("[SFX] Failed to open PCM device, disabling PCM support\n");
mixer = NULL;
pcm_device = NULL;
} else {
if (mixer->init(mixer, pcm_device)) {
sciprintf("[SFX] Failed to initialise PCM mixer; disabling PCM support\n");
mixer = NULL;
pcm_device = NULL;
}
}
}
/*-------------------*/
/* Initialise player */
/*-------------------*/
if (!resmgr) {
sciprintf("[SFX] Warning: No resource manager present, cannot initialise player\n");
player = NULL;
} else if (player->init(resmgr, timer ? timer->delay_ms : 0)) {
sciprintf("[SFX] Song player '%s' reported error, disabled\n", player->name);
player = NULL;
}
if (!player)
sciprintf("[SFX] No song player found\n");
else
sciprintf("[SFX] Using song player '%s', v%s\n", player->name, player->version);
_sfx_timer_active = 1;
}
void
sfx_exit(sfx_state_t *self) {
callbackMutex->lock();
_sfx_timer_active = 0;
#ifdef DEBUG_SONG_API
warning("[sfx-core] Uninitialising\n");
#endif
song_lib_free(self->songlib);
pcm_device = NULL;
if (timer && timer->exit())
warning("[SFX] Timer reported error on exit\n");
/* WARNING: The mixer may hold feeds from the
** player, so we must stop the mixer BEFORE
** stopping the player. */
if (mixer) {
mixer->exit(mixer);
mixer = NULL;
}
if (player)
/* See above: This must happen AFTER stopping the mixer */
player->exit();
callbackMutex->unlock();
delete callbackMutex;
callbackMutex = 0;
}
static inline int
time_le(GTimeVal a, GTimeVal b) {
return time_minus(a, b) <= 0;
}
void
sfx_suspend(sfx_state_t *self, int suspend) {
#ifdef DEBUG_SONG_API
warning("[sfx-core] Suspending? = %d\n", suspend);
#endif
if (suspend && (!self->suspended)) {
/* suspend */
_freeze_time(self);
if (player)
player->pause();
/* Suspend song player */
} else if (!suspend && (self->suspended)) {
/* unsuspend */
_thaw_time(self);
if (player)
player->resume();
/* Unsuspend song player */
}
self->suspended = suspend;
}
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)
*/
{
if (!self->song)
return 0; /* No milk today */
*handle = self->song->handle;
#ifdef DEBUG_SONG_API
warning("[sfx-core] Polling any (%08lx)\n", *handle);
#endif
return sfx_poll_specific(self, *handle, cue);
}
int
sfx_poll_specific(sfx_state_t *self, song_handle_t handle, int *cue) {
GTimeVal ctime;
song_t *song = self->song;
sci_get_current_time(&ctime);
while (song && song->handle != handle)
song = song->next_playing;
if (!song)
return 0; /* Song not playing */
if (self->debug & SFX_DEBUG_CUES) {
warning("[SFX:CUE] Polled song %08lx ", handle);
}
while (1) {
unsigned char buf[8];
int result;
if (!time_le(song->wakeup_time, ctime))
return 0; /* Patience, young hacker! */
result = songit_next(&(song->it), buf, cue,
IT_READER_MASK_ALL);
switch (result) {
case SI_FINISHED:
_sfx_set_song_status(self, song,
SOUND_STATUS_STOPPED);
_update(self);
/* ...fall through... */
case SI_LOOP:
case SI_RELATIVE_CUE:
case SI_ABSOLUTE_CUE:
if (self->debug & SFX_DEBUG_CUES) {
sciprintf(" => ");
if (result == SI_FINISHED)
sciprintf("finished\n");
else {
if (result == SI_LOOP)
sciprintf("Loop: ");
else
sciprintf("Cue: ");
sciprintf("%d (0x%x)", *cue, *cue);
}
}
return result;
default:
if (result > 0)
song->wakeup_time =
time_plus(song->wakeup_time,
result * SOUND_TICK);
/* Delay */
break;
}
}
}
/*****************/
/* Song basics */
/*****************/
int
sfx_add_song(sfx_state_t *self, song_iterator_t *it, int priority, song_handle_t handle, int number) {
song_t *song = song_lib_find(self->songlib, handle);
#ifdef DEBUG_SONG_API
warning("[sfx-core] Adding song: %08lx at %d, it=%p\n", handle, priority, it);
#endif
if (!it) {
warning("[SFX] Attempt to add empty song with handle %08lx\n", handle);
return -1;
}
it->init(it);
/* If we're already playing this, stop it */
/* Tell player to shut up */
_dump_songs(self);
if (player)
player->iterator_message(songit_make_message(handle, SIMSG_STOP));
if (song) {
_sfx_set_song_status(self, song, SOUND_STATUS_STOPPED);
warning("Overwriting old song (%08lx) ...\n", handle);
if (song->status == SOUND_STATUS_PLAYING
|| song->status == SOUND_STATUS_SUSPENDED) {
warning("Unexpected (error): Song %ld still playing/suspended (%d)\n",
handle, song->status);
songit_free(it);
return -1;
} else
song_lib_remove(self->songlib, handle); /* No duplicates */
}
song = song_new(handle, it, priority);
song->resource_num = number;
song->hold = 0;
song->loops = 0;
sci_get_current_time(&song->wakeup_time); /* No need to delay */
song_lib_add(self->songlib, song);
self->song = NULL; /* As above */
_update(self);
return 0;
}
void
sfx_remove_song(sfx_state_t *self, song_handle_t handle) {
#ifdef DEBUG_SONG_API
warning("[sfx-core] Removing song: %08lx\n", handle);
#endif
if (self->song && self->song->handle == handle)
self->song = NULL;
song_lib_remove(self->songlib, handle);
_update(self);
}
/**********************/
/* Song modifications */
/**********************/
#define ASSERT_SONG(s) if (!(s)) { warning("Looking up song handle %08lx failed in %s, L%d\n", handle, __FILE__, __LINE__); return; }
void
sfx_song_set_status(sfx_state_t *self, song_handle_t handle, int status) {
song_t *song = song_lib_find(self->songlib, handle);
ASSERT_SONG(song);
#ifdef DEBUG_SONG_API
warning("[sfx-core] Setting song status to %d"
" (0:stop, 1:play, 2:susp, 3:wait): %08lx\n", status, handle);
#endif
_sfx_set_song_status(self, song, status);
_update(self);
}
void
sfx_song_set_fade(sfx_state_t *self, song_handle_t handle,
fade_params_t *params) {
#ifdef DEBUG_SONG_API
static const char *stopmsg[] = {"??? Should not happen", "Do not stop afterwards", "Stop afterwards"};
#endif
song_t *song = song_lib_find(self->songlib, handle);
ASSERT_SONG(song);
#ifdef DEBUG_SONG_API
warning("[sfx-core] Setting fade params of %08lx to "
"final volume %d in steps of %d per %d ticks. %s.\n",
handle, fade->final_volume, fade->step_size, fade->ticks_per_step,
stopmsg[fade->action]);
#endif
SIMSG_SEND_FADE(song->it, params);
_update(self);
}
void
sfx_song_renice(sfx_state_t *self, song_handle_t handle, int priority) {
song_t *song = song_lib_find(self->songlib, handle);
ASSERT_SONG(song);
#ifdef DEBUG_SONG_API
warning("[sfx-core] Renicing song %08lx to %d\n",
handle, priority);
#endif
song->priority = priority;
_update(self);
}
void
sfx_song_set_loops(sfx_state_t *self, song_handle_t handle, int loops) {
song_t *song = song_lib_find(self->songlib, handle);
song_iterator_message_t msg
= songit_make_message(handle, SIMSG_SET_LOOPS(loops));
ASSERT_SONG(song);
#ifdef DEBUG_SONG_API
warning("[sfx-core] Setting loops on %08lx to %d\n",
handle, loops);
#endif
songit_handle_message(&(song->it), msg);
song->loops = ((base_song_iterator_t *) song->it)->loops;
if (player/* && player->send_iterator_message*/)
/* FIXME: The above should be optional! */
player->iterator_message(msg);
}
void
sfx_song_set_hold(sfx_state_t *self, song_handle_t handle, int hold) {
song_t *song = song_lib_find(self->songlib, handle);
song_iterator_message_t msg
= songit_make_message(handle, SIMSG_SET_HOLD(hold));
ASSERT_SONG(song);
song->hold = hold;
#ifdef DEBUG_SONG_API
warning("[sfx-core] Setting hold on %08lx to %d\n",
handle, loops);
#endif
songit_handle_message(&(song->it), msg);
if (player/* && player->send_iterator_message*/)
/* FIXME: The above should be optional! */
player->iterator_message(msg);
}
/* Different from the one in iterator.c */
static const int MIDI_cmdlen[16] = {0, 0, 0, 0, 0, 0, 0, 0,
3, 3, 0, 3, 2, 0, 3, 0
};
static const song_handle_t midi_send_base = 0xffff0000;
int
sfx_send_midi(sfx_state_t *self, song_handle_t handle, int channel,
int command, int arg1, int arg2) {
byte buffer[5];
tell_synth_func *tell = sfx_get_player_tell_func();
/* Yes, in that order. SCI channel mutes are actually done via
a counting semaphore. 0 means to decrement the counter, 1
to increment it. */
static const char *channel_state[] = {"ON", "OFF"};
if (command == 0xb0 &&
arg1 == SCI_MIDI_CHANNEL_MUTE) {
sciprintf("TODO: channel mute (channel %d %s)", channel,
channel_state[arg2]);
/* We need to have a GET_PLAYMASK interface to use
here. SET_PLAYMASK we've got.
*/
return SFX_OK;
}
buffer[0] = channel | command; /* No channel remapping yet */
switch (command) {
case 0x80 :
case 0x90 :
case 0xb0 :
buffer[1] = arg1 & 0xff;
buffer[2] = arg2 & 0xff;
break;
case 0xc0 :
buffer[1] = arg1 & 0xff;
break;
case 0xe0 :
buffer[1] = (arg1 & 0x7f) | 0x80;
buffer[2] = (arg1 & 0xff00) >> 7;
break;
default:
sciprintf("Unexpected explicit MIDI command %02x\n", command);
return SFX_ERROR;
}
if (tell)
tell(MIDI_cmdlen[command >> 4], buffer);
return SFX_OK;
}
int
sfx_get_volume(sfx_state_t *self) {
warning("FIXME: Implement volume\n");
return 0;
}
void
sfx_set_volume(sfx_state_t *self, int volume) {
warning("FIXME: Implement volume\n");
}
void
sfx_all_stop(sfx_state_t *self) {
#ifdef DEBUG_SONG_API
warning("[sfx-core] All stop\n");
#endif
song_lib_free(self->songlib);
_update(self);
}
} // End of namespace Sci
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