Created DefaultAudioCDManager and SdlAudioCDManager

svn-id: r49532
2010-06-09 05:39:27 +00:00 · 2010-06-09 05:39:27 +00:00 · 9f2358612a
commit 9f2358612a
parent 7840aa1966
4 changed files with 381 additions and 0 deletions
--- a/backends/audiocd/sdl/sdl-audiocd.cpp
+++ b/backends/audiocd/sdl/sdl-audiocd.cpp
@ -0,0 +1,135 @@
+/* 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.
+ *
+ * $URL$
+ * $Id$
+ *
+ */
+
+#if defined(WIN32) || defined(UNIX) || defined(MACOSX)
+
+#include "backends/audiocd/sdl/sdl-audiocd.h"
+
+SdlAudioCDManager::SdlAudioCDManager()
+	:
+	_cdrom(0),
+	_cdTrack(0),
+	_cdNumLoops(0),
+	_cdStartFrame(0),
+	_cdDuration(0),
+	_cdEndTime(0),
+	_cdStopTime(0) {
+
+}
+
+SdlAudioCDManager::~SdlAudioCDManager() {
+	if (_cdrom) {
+		SDL_CDStop(_cdrom);
+		SDL_CDClose(_cdrom);
+	}
+}
+
+bool SdlAudioCDManager::openCD(int drive) {
+	if (SDL_InitSubSystem(SDL_INIT_CDROM) == -1)
+		_cdrom = NULL;
+	else {
+		_cdrom = SDL_CDOpen(drive);
+		// Did it open? Check if _cdrom is NULL
+		if (!_cdrom) {
+			warning("Couldn't open drive: %s", SDL_GetError());
+		} else {
+			_cdNumLoops = 0;
+			_cdStopTime = 0;
+			_cdEndTime = 0;
+		}
+	}
+
+	return (_cdrom != NULL);
+}
+
+void SdlAudioCDManager::stopCD() {	/* Stop CD Audio in 1/10th of a second */
+	_cdStopTime = SDL_GetTicks() + 100;
+	_cdNumLoops = 0;
+}
+
+void SdlAudioCDManager::playCD(int track, int num_loops, int start_frame, int duration) {
+	if (!num_loops && !start_frame)
+		return;
+
+	if (!_cdrom)
+		return;
+
+	if (duration > 0)
+		duration += 5;
+
+	_cdTrack = track;
+	_cdNumLoops = num_loops;
+	_cdStartFrame = start_frame;
+
+	SDL_CDStatus(_cdrom);
+	if (start_frame == 0 && duration == 0)
+		SDL_CDPlayTracks(_cdrom, track, 0, 1, 0);
+	else
+		SDL_CDPlayTracks(_cdrom, track, start_frame, 0, duration);
+	_cdDuration = duration;
+	_cdStopTime = 0;
+	_cdEndTime = SDL_GetTicks() + _cdrom->track[track].length * 1000 / CD_FPS;
+}
+
+bool SdlAudioCDManager::pollCD() const {
+	if (!_cdrom)
+		return false;
+
+	return (_cdNumLoops != 0 && (SDL_GetTicks() < _cdEndTime || SDL_CDStatus(_cdrom) == CD_PLAYING));
+}
+
+void SdlAudioCDManager::updateCD() {
+	if (!_cdrom)
+		return;
+
+	if (_cdStopTime != 0 && SDL_GetTicks() >= _cdStopTime) {
+		SDL_CDStop(_cdrom);
+		_cdNumLoops = 0;
+		_cdStopTime = 0;
+		return;
+	}
+
+	if (_cdNumLoops == 0 || SDL_GetTicks() < _cdEndTime)
+		return;
+
+	if (_cdNumLoops != 1 && SDL_CDStatus(_cdrom) != CD_STOPPED) {
+		// Wait another second for it to be done
+		_cdEndTime += 1000;
+		return;
+	}
+
+	if (_cdNumLoops > 0)
+		_cdNumLoops--;
+
+	if (_cdNumLoops != 0) {
+		if (_cdStartFrame == 0 && _cdDuration == 0)
+			SDL_CDPlayTracks(_cdrom, _cdTrack, 0, 1, 0);
+		else
+			SDL_CDPlayTracks(_cdrom, _cdTrack, _cdStartFrame, 0, _cdDuration);
+		_cdEndTime = SDL_GetTicks() + _cdrom->track[_cdTrack].length * 1000 / CD_FPS;
+	}
+}
+
+#endif