/*************************************************************************************** * Genesis Plus * CD drive processor & CD-DA fader * * Copyright (C) 2012-2022 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_ #include "blip_buf.h" #if defined(USE_LIBVORBIS) #include #elif defined(USE_LIBTREMOR) #include "tremor/ivorbisfile.h" #endif #if defined(USE_LIBCHDR) #include "libchdr/src/chd.h" #include "libchdr/src/cdrom.h" #endif #define cdd scd.cdd_hw /* CDD status */ #define CD_STOP 0x00 #define CD_PLAY 0x01 #define CD_SEEK 0x02 #define CD_SCAN 0x03 #define CD_PAUSE 0x04 #define CD_OPEN 0x05 #define NO_VALID_CHK 0x06 /* unused */ #define NO_VALID_CMD 0x07 /* unused */ #define CD_ERROR 0x08 /* unused */ #define CD_TOC 0x09 #define CD_TRACK_MOVE 0x0A /* unused */ #define NO_DISC 0x0B #define CD_END 0x0C #define CD_TRAY 0x0E /* unused */ #define CD_TEST 0x0F /* unusec */ /* CD-DA digital filter types */ #define CD_TYPE_DEFAULT 0x00 #define CD_TYPE_WONDERMEGA 0x01 #define CD_TYPE_WONDERMEGA_M2 0x02 /* CD track */ typedef struct { cdStream *fd; #if defined(USE_LIBTREMOR) || defined(USE_LIBVORBIS) OggVorbis_File vf; #endif int offset; int start; int end; int type; int loopEnabled; int loopOffset; } track_t; /* CD TOC */ typedef struct { int end; int last; track_t tracks[100]; cdStream *sub; } toc_t; #if defined(USE_LIBCHDR) /* CHD file */ typedef struct { chd_file *file; uint8 *hunk; int hunkbytes; int hunknum; int hunkofs; } chd_t; #endif /* CDD hardware */ typedef struct { uint32 cycles; uint32 latency; int type; int loaded; int index; int lba; int scanOffset; uint16 fader[2]; uint8 status; uint16 sectorSize; toc_t toc; #if defined(USE_LIBCHDR) chd_t chd; #endif int16 audio[2]; } cdd_t; /* Function prototypes */ extern void cdd_init(int samplerate); extern void cdd_reset(void); extern int cdd_context_save(uint8 *state); extern int cdd_context_load(uint8 *state, char *version); extern int cdd_load(char *filename, char *header); extern void cdd_unload(void); extern void cdd_read_data(uint8 *dst, uint8 *subheader); extern void cdd_seek_audio(int index, int lba); extern void cdd_read_audio(unsigned int samples); extern void cdd_update_audio(unsigned int samples); extern void cdd_update(void); extern void cdd_process(void); #endif