Merge branch 'master' into titanic

1 files changed, 108 insertions, 0 deletions

diff --git a/backends/audiocd/audiocd-stream.h b/backends/audiocd/audiocd-stream.h
new file mode 100644
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+++ b/backends/audiocd/audiocd-stream.h
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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.
+ *
+ * Original license header:
+ *
+ * Cabal - Legacy Game Implementations
+ *
+ * Cabal 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.
+ *
+ */
+
+#ifndef BACKENDS_AUDIOCD_AUDIOCD_STREAM_H
+#define BACKENDS_AUDIOCD_AUDIOCD_STREAM_H
+
+#include "audio/audiostream.h"
+#include "common/mutex.h"
+#include "common/queue.h"
+#include "common/timer.h"
+
+class AudioCDStream : public Audio::SeekableAudioStream {
+public:
+	AudioCDStream();
+	~AudioCDStream();
+
+	int readBuffer(int16 *buffer, const int numSamples);
+	bool isStereo() const { return true; }
+	int getRate() const { return 44100; }
+	bool endOfData() const;
+	bool seek(const Audio::Timestamp &where);
+	Audio::Timestamp getLength() const;
+
+protected:
+	virtual uint getStartFrame() const = 0;
+	virtual uint getEndFrame() const = 0;
+	virtual bool readFrame(int frame, int16 *buffer) = 0;
+
+	void startTimer(bool fillBuffer = false);
+	void stopTimer();
+
+	enum {
+		kBytesPerFrame = 2352,
+		kSamplesPerFrame = kBytesPerFrame / 2
+	};
+
+	enum {
+		kSecondsPerMinute = 60,
+		kFramesPerSecond = 75
+	};
+
+	enum {
+		// Keep about a second's worth of audio in the buffer
+		kBufferThreshold = kFramesPerSecond
+	};
+
+private:
+	int16 _buffer[kSamplesPerFrame];
+	int _frame;
+	uint _bufferPos;
+
+	Common::Queue<int16 *> _bufferQueue;
+	int _bufferFrame;
+	Common::Mutex _mutex;
+
+	bool _forceStop;
+	bool shouldForceStop() const;
+	void forceStop();
+	Common::Mutex _forceStopMutex;
+
+	bool readNextFrame();
+	static void timerProc(void *refCon);
+	void onTimer();
+	void emptyQueue();
+};
+
+#endif