mirror of
https://github.com/ekeeke/Genesis-Plus-GX.git
synced 2024-11-09 12:25:16 +01:00
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/***************************************************************************************
|
|
* Genesis Plus
|
|
* CD drive processor & CD-DA fader
|
|
*
|
|
* Copyright (C) 2012 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"
|
|
|
|
#define cdd scd.cdd_hw
|
|
|
|
/* 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
|
|
#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
|
|
{
|
|
FILE *fd;
|
|
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;
|
|
|
|
/* Function prototypes */
|
|
extern void cdd_init(blip_t* left, blip_t* right);
|
|
extern void cdd_reset(void);
|
|
extern int cdd_context_save(uint8 *state);
|
|
extern int cdd_context_load(uint8 *state);
|
|
extern int cdd_load(char *filename, char *header);
|
|
extern void cdd_unload(void);
|
|
extern void cdd_read_data(uint8 *dst);
|
|
extern void cdd_read_audio(unsigned int samples);
|
|
extern void cdd_update(void);
|
|
extern void cdd_process(void);
|
|
|
|
#endif
|