diff options
Diffstat (limited to 'engines/sci/sfx/player/realtime.cpp')
| -rw-r--r-- | engines/sci/sfx/player/realtime.cpp | 256 |
1 files changed, 0 insertions, 256 deletions
diff --git a/engines/sci/sfx/player/realtime.cpp b/engines/sci/sfx/player/realtime.cpp deleted file mode 100644 index 85c6ffe0cc..0000000000 --- a/engines/sci/sfx/player/realtime.cpp +++ /dev/null @@ -1,256 +0,0 @@ -/* 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. - * - * $URL$ - * $Id$ - * - */ - -/* OK... 'realtime' may be a little too euphemistic, as this one just -** prays for some reasonable amount of soft real-time, but it's close -** enough, I guess. */ - -#include "sci/tools.h" -#include "sci/sfx/player/realtime.h" -#include "sci/sfx/sequencer.h" -#include "sci/sfx/iterator.h" -#include "sci/sfx/core.h" - -#include "common/system.h" - -namespace Sci { - -/* Playing mechanism */ - -static inline int delta_time(const uint32 comp, const uint32 base) { - return long(comp) - long(base); -} - -// TODO: Turn the following static vars into member vars -static sfx_sequencer_t *seq; - -static SongIterator *play_it = NULL; -static uint32 play_last_time; -static uint32 play_pause_started; /* Beginning of the last pause */ -static uint32 play_pause_counter; /* Last point in time to mark a - ** play position augmentation */ -static int play_paused = 0; -static int play_it_done = 0; -static int play_writeahead = 0; -static int play_moredelay = 0; - -static void play_song(SongIterator *it, uint32 *wakeup_time, int writeahead_time) { - unsigned char buf[8]; - int result; - - if (play_paused) { - uint32 ct = g_system->getMillis(); - - *wakeup_time += delta_time(play_pause_counter, ct); - - play_pause_counter = ct; - } else - /* Not paused: */ - while (play_it && delta_time(*wakeup_time, g_system->getMillis()) - < writeahead_time) { - int delay; - - switch ((delay = songit_next(&(play_it), - &(buf[0]), &result, - IT_READER_MASK_ALL - | IT_READER_MAY_FREE - | IT_READER_MAY_CLEAN))) { - - case SI_FINISHED: - play_it_done = 1; - return; - - case SI_IGNORE: - case SI_LOOP: - case SI_RELATIVE_CUE: - case SI_ABSOLUTE_CUE: - break; - - case SI_PCM: - sfx_play_iterator_pcm(play_it, 0); - break; - - case 0: - seq->event(buf[0], result - 1, buf + 1); - - break; - - default: - play_moredelay = delay - 1; - *wakeup_time += delay * 1000 / SFX_TICKS_PER_SEC; - if (seq->delay) - seq->delay(delay); - } - } -} - -void RealtimePlayer::tell_synth(int buf_nr, byte *buf) { - seq->event(buf[0], buf_nr - 1, buf + 1); -} - -void RealtimePlayer::maintenance() { - if (play_it && !play_it_done) { - if (!play_moredelay) { - int delta = delta_time(play_last_time, g_system->getMillis()); - - if (delta < 0) { - play_writeahead -= (int)((double)delta * 1.2); /* Adjust upwards */ - } else if (delta > 15) { - play_writeahead -= 3; /* Adjust downwards */ - } - } else - --play_moredelay; - - if (play_writeahead < seq->min_write_ahead_ms) - play_writeahead = seq->min_write_ahead_ms; - - play_song(play_it, &play_last_time, play_writeahead); - } -} - -static Resource *find_patch(ResourceManager *resmgr, const char *seq_name, int patchfile) { - Resource *res = NULL; - - if (patchfile != SFX_SEQ_PATCHFILE_NONE) { - res = resmgr->findResource(kResourceTypePatch, patchfile, 0); - if (!res) { - warning("[SFX] " __FILE__": patch.%03d requested by sequencer (%s), but not found", - patchfile, seq_name); - } - } - - return res; -} - -/* API implementation */ - -Common::Error RealtimePlayer::init(ResourceManager *resmgr, int expected_latency) { - Resource *res = NULL, *res2 = NULL; - void *seq_dev = NULL; - - seq = sfx_find_sequencer(NULL); - - if (!seq) { - warning("[SFX] " __FILE__": Could not find sequencer"); - return Common::kUnknownError; - } - - this->polyphony = seq->polyphony; - - res = find_patch(resmgr, seq->name, seq->patchfile); - res2 = find_patch(resmgr, seq->name, seq->patchfile2); - - if (seq->device) - seq_dev = sfx_find_device(seq->device, NULL); - - if (seq->open(res ? res->size : 0, - res ? res->data : NULL, - res2 ? res2->size : 0, - res2 ? res2->data : NULL, - seq_dev)) { - warning("[SFX] " __FILE__": Sequencer failed to initialize"); - return Common::kUnknownError; - } - - play_writeahead = expected_latency; - if (play_writeahead < seq->min_write_ahead_ms) - play_writeahead = seq->min_write_ahead_ms; - - play_writeahead *= 1; /* milliseconds */ - - if (seq->reset_timer) - seq->reset_timer(0); - - return Common::kNoError; -} - -Common::Error RealtimePlayer::add_iterator(SongIterator *it, uint32 start_time) { - if (seq->reset_timer) /* Restart timer counting if possible */ - seq->reset_timer(start_time); - - SIMSG_SEND(it, SIMSG_SET_PLAYMASK(seq->playmask)); - SIMSG_SEND(it, SIMSG_SET_RHYTHM(seq->play_rhythm)); - - play_last_time = start_time; - play_it = sfx_iterator_combine(play_it, it); - play_it_done = 0; - play_moredelay = 0; - - return Common::kNoError; -} - -Common::Error RealtimePlayer::stop(void) { - SongIterator *it = play_it; - - play_it = NULL; - - delete it; - if (seq && seq->allstop) - seq->allstop(); - - return Common::kNoError; -} - -Common::Error RealtimePlayer::iterator_message(const SongIterator::Message &msg) { - if (!play_it) - return Common::kUnknownError; - - songit_handle_message(&play_it, msg); - return Common::kNoError; -} - -Common::Error RealtimePlayer::pause(void) { - play_pause_started = g_system->getMillis(); - // Also, indicate that we haven't modified the time counter yet - play_pause_counter = play_pause_started; - - play_paused = 1; - if (!seq->allstop) { - sciprintf("[SFX] Cannot suspend sequencer, sound will continue for a bit\n"); - return Common::kNoError; - } else - return seq->allstop(); -} - -Common::Error RealtimePlayer::resume(void) { - play_paused = 0; - return Common::kNoError; -} - -Common::Error RealtimePlayer::exit(void) { - if (seq->close()) { - warning("[SFX] Sequencer reported error on close"); - return Common::kUnknownError; - } - - return Common::kNoError; -} - -RealtimePlayer::RealtimePlayer() { - name = "realtime"; - version = "0.1"; -} - -} // End of namespace Sci |