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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 |