--- /dev/null
+/***************************************************************************************
+ * Genesis Plus
+ * CD drive processor & CD-DA fader
+ *
+ * Copyright (C) 2012-2013 Eke-Eke (Genesis Plus GX)
+ *
+ * Redistribution and use of this code or any derivative works are permitted
+ * provided that the following conditions are met:
+ *
+ * - Redistributions may not be sold, nor may they be used in a commercial
+ * product or activity.
+ *
+ * - Redistributions that are modified from the original source must include the
+ * complete source code, including the source code for all components used by a
+ * binary built from the modified sources. However, as a special exception, the
+ * source code distributed need not include anything that is normally distributed
+ * (in either source or binary form) with the major components (compiler, kernel,
+ * and so on) of the operating system on which the executable runs, unless that
+ * component itself accompanies the executable.
+ *
+ * - Redistributions must reproduce the above copyright notice, this list of
+ * conditions and the following disclaimer in the documentation and/or other
+ * materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ *
+ ****************************************************************************************/
+#ifndef _HW_CDD_
+#define _HW_CDD_
+
+#ifdef USE_LIBTREMOR
+#include "tremor/ivorbisfile.h"
+#endif
+
+/* CDD status */
+#define NO_DISC 0x00
+#define CD_PLAY 0x01
+#define CD_SEEK 0x02
+#define CD_SCAN 0x03
+#define CD_READY 0x04
+#define CD_OPEN 0x05 /* similar to 0x0E ? */
+#define CD_STOP 0x09
+#define CD_END 0x0C
+
+/* CD blocks scanning speed */
+#define CD_SCAN_SPEED 30
+
+#define CD_MAX_TRACKS 100
+
+/* CD track */
+typedef struct
+{
+ void *fd;
+#ifdef USE_LIBTREMOR
+ OggVorbis_File vf;
+#endif
+ int offset;
+ int start;
+ int end;
+} track_t;
+
+/* CD TOC */
+typedef struct
+{
+ int end;
+ int last;
+ track_t tracks[CD_MAX_TRACKS];
+} toc_t;
+
+/* CDD hardware */
+typedef struct
+{
+ uint32 cycles;
+ uint32 latency;
+ int loaded;
+ int index;
+ int lba;
+ int scanOffset;
+ int volume;
+ uint8 status;
+ uint16 sectorSize;
+ toc_t toc;
+ int16 audio[2];
+} cdd_t;
+
+extern cdd_t cdd;
+
+#endif