1 /*************************************************************************************** 2 * Genesis Plus 3 * CD drive processor & CD-DA fader 4 * 5 * Copyright (C) 2012-2013 Eke-Eke (Genesis Plus GX) 6 * 7 * Redistribution and use of this code or any derivative works are permitted 8 * provided that the following conditions are met: 9 * 10 * - Redistributions may not be sold, nor may they be used in a commercial 11 * product or activity. 12 * 13 * - Redistributions that are modified from the original source must include the 14 * complete source code, including the source code for all components used by a 15 * binary built from the modified sources. However, as a special exception, the 16 * source code distributed need not include anything that is normally distributed 17 * (in either source or binary form) with the major components (compiler, kernel, 18 * and so on) of the operating system on which the executable runs, unless that 19 * component itself accompanies the executable. 20 * 21 * - Redistributions must reproduce the above copyright notice, this list of 22 * conditions and the following disclaimer in the documentation and/or other 23 * materials provided with the distribution. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 26 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 29 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 * 37 ****************************************************************************************/ 38 #ifndef _HW_CDD_ 39 #define _HW_CDD_ 40 41 #ifdef USE_LIBTREMOR 42 #include "tremor/ivorbisfile.h" 43 #endif 44 45 /* CDD status */ 46 #define NO_DISC 0x00 47 #define CD_PLAY 0x01 48 #define CD_SEEK 0x02 49 #define CD_SCAN 0x03 50 #define CD_READY 0x04 51 #define CD_OPEN 0x05 /* similar to 0x0E ? */ 52 #define CD_STOP 0x09 53 #define CD_END 0x0C 54 55 /* CD blocks scanning speed */ 56 #define CD_SCAN_SPEED 30 57 58 #define CD_MAX_TRACKS 100 59 60 /* CD track */ 61 typedef struct 62 { 63 void *fd; 64 #ifdef USE_LIBTREMOR 65 OggVorbis_File vf; 66 #endif 67 int offset; 68 int start; 69 int end; 70 } track_t; 71 72 /* CD TOC */ 73 typedef struct 74 { 75 int end; 76 int last; 77 track_t tracks[CD_MAX_TRACKS]; 78 } toc_t; 79 80 /* CDD hardware */ 81 typedef struct 82 { 83 uint32 cycles; 84 uint32 latency; 85 int loaded; 86 int index; 87 int lba; 88 int scanOffset; 89 int volume; 90 uint8 status; 91 uint16 sectorSize; 92 toc_t toc; 93 int16 audio[2]; 94 } cdd_t; 95 96 extern cdd_t cdd; 97 98 #endif 99