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author | Franklin Wei <git@fwei.tk> | 2017-01-21 15:18:31 -0500 |
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committer | Franklin Wei <git@fwei.tk> | 2017-12-23 21:01:26 -0500 |
commit | a855d6202536ff28e5aae4f22a0f31d8f5b325d0 (patch) | |
tree | 8c75f224dd64ed360505afa8843d016b0d75000b /apps/plugins/sdl/src/audio/mint/SDL_mintaudio.h | |
parent | 01c6dcf6c7b9bb1ad2fa0450f99bacc5f3d3e04b (diff) | |
download | rockbox-a855d6202536ff28e5aae4f22a0f31d8f5b325d0.tar.gz rockbox-a855d6202536ff28e5aae4f22a0f31d8f5b325d0.zip |
Port of Duke Nukem 3D
This ports Fabien Sanglard's Chocolate Duke to run on a version of SDL
for Rockbox.
Change-Id: I8f2c4c78af19de10c1633ed7bb7a997b43256dd9
Diffstat (limited to 'apps/plugins/sdl/src/audio/mint/SDL_mintaudio.h')
-rw-r--r-- | apps/plugins/sdl/src/audio/mint/SDL_mintaudio.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/apps/plugins/sdl/src/audio/mint/SDL_mintaudio.h b/apps/plugins/sdl/src/audio/mint/SDL_mintaudio.h new file mode 100644 index 0000000000..ba6056ee3a --- /dev/null +++ b/apps/plugins/sdl/src/audio/mint/SDL_mintaudio.h | |||
@@ -0,0 +1,121 @@ | |||
1 | /* | ||
2 | SDL - Simple DirectMedia Layer | ||
3 | Copyright (C) 1997-2012 Sam Lantinga | ||
4 | |||
5 | This library is free software; you can redistribute it and/or | ||
6 | modify it under the terms of the GNU Library General Public | ||
7 | License as published by the Free Software Foundation; either | ||
8 | version 2 of the License, or (at your option) any later version. | ||
9 | |||
10 | This library is distributed in the hope that it will be useful, | ||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | Library General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU Library General Public | ||
16 | License along with this library; if not, write to the Free | ||
17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
18 | |||
19 | Sam Lantinga | ||
20 | slouken@libsdl.org | ||
21 | */ | ||
22 | #include "SDL_config.h" | ||
23 | |||
24 | /* | ||
25 | MiNT audio driver | ||
26 | |||
27 | Patrice Mandin | ||
28 | */ | ||
29 | |||
30 | #ifndef _SDL_mintaudio_h | ||
31 | #define _SDL_mintaudio_h | ||
32 | |||
33 | #include "../SDL_sysaudio.h" | ||
34 | #include "SDL_mintaudio_stfa.h" | ||
35 | |||
36 | /* Hidden "this" pointer for the audio functions */ | ||
37 | #define _THIS SDL_AudioDevice *this | ||
38 | |||
39 | /* 16 predivisors with 3 clocks max. */ | ||
40 | #define MINTAUDIO_maxfreqs (16*3) | ||
41 | |||
42 | typedef struct { | ||
43 | Uint32 frequency; | ||
44 | Uint32 masterclock; | ||
45 | Uint32 predivisor; | ||
46 | int gpio_bits; /* in case of external clock */ | ||
47 | } mint_frequency_t; | ||
48 | |||
49 | struct SDL_PrivateAudioData { | ||
50 | mint_frequency_t frequencies[MINTAUDIO_maxfreqs]; | ||
51 | int freq_count; /* Number of frequencies in the array */ | ||
52 | int numfreq; /* Number of selected frequency */ | ||
53 | }; | ||
54 | |||
55 | /* Old variable names */ | ||
56 | |||
57 | #define MINTAUDIO_frequencies (this->hidden->frequencies) | ||
58 | #define MINTAUDIO_freqcount (this->hidden->freq_count) | ||
59 | #define MINTAUDIO_numfreq (this->hidden->numfreq) | ||
60 | |||
61 | /* _MCH cookie (values>>16) */ | ||
62 | enum { | ||
63 | MCH_ST=0, | ||
64 | MCH_STE, | ||
65 | MCH_TT, | ||
66 | MCH_F30, | ||
67 | MCH_CLONE, | ||
68 | MCH_ARANYM | ||
69 | }; | ||
70 | |||
71 | /* Master clocks for replay frequencies */ | ||
72 | #define MASTERCLOCK_STE 8010666 /* Not sure of this one */ | ||
73 | #define MASTERCLOCK_TT 16107953 /* Not sure of this one */ | ||
74 | #define MASTERCLOCK_FALCON1 25175000 | ||
75 | #define MASTERCLOCK_FALCON2 32000000 /* Only usable for DSP56K */ | ||
76 | #define MASTERCLOCK_FALCONEXT -1 /* Clock on DSP56K port, unknown */ | ||
77 | #define MASTERCLOCK_44K 22579200 /* Standard clock for 44.1 Khz */ | ||
78 | #define MASTERCLOCK_48K 24576000 /* Standard clock for 48 Khz */ | ||
79 | |||
80 | /* Master clock predivisors */ | ||
81 | #define MASTERPREDIV_STE 160 | ||
82 | #define MASTERPREDIV_TT 320 | ||
83 | #define MASTERPREDIV_FALCON 256 | ||
84 | #define MASTERPREDIV_MILAN 256 | ||
85 | |||
86 | /* Variables */ | ||
87 | extern SDL_AudioDevice *SDL_MintAudio_device; | ||
88 | extern Uint8 *SDL_MintAudio_audiobuf[2]; /* Pointers to buffers */ | ||
89 | extern unsigned long SDL_MintAudio_audiosize; /* Length of audio buffer=spec->size */ | ||
90 | extern volatile unsigned short SDL_MintAudio_numbuf; /* Buffer to play */ | ||
91 | extern volatile unsigned short SDL_MintAudio_mutex; | ||
92 | extern cookie_stfa_t *SDL_MintAudio_stfa; | ||
93 | extern volatile unsigned long SDL_MintAudio_clocktics; | ||
94 | extern unsigned short SDL_MintAudio_hasfpu; /* To preserve fpu registers if needed */ | ||
95 | |||
96 | /* MiNT thread variables */ | ||
97 | extern SDL_bool SDL_MintAudio_mint_present; | ||
98 | extern SDL_bool SDL_MintAudio_quit_thread; | ||
99 | extern SDL_bool SDL_MintAudio_thread_finished; | ||
100 | extern long SDL_MintAudio_thread_pid; | ||
101 | |||
102 | /* Functions */ | ||
103 | void SDL_MintAudio_Callback(void); | ||
104 | void SDL_MintAudio_AddFrequency(_THIS, Uint32 frequency, Uint32 clock, | ||
105 | Uint32 prediv, int gpio_bits); | ||
106 | int SDL_MintAudio_SearchFrequency(_THIS, int desired_freq); | ||
107 | void SDL_MintAudio_CheckFpu(void); | ||
108 | |||
109 | /* MiNT thread functions */ | ||
110 | int SDL_MintAudio_Thread(long param); | ||
111 | void SDL_MintAudio_WaitThread(void); | ||
112 | |||
113 | /* ASM interrupt functions */ | ||
114 | void SDL_MintAudio_GsxbInterrupt(void); | ||
115 | void SDL_MintAudio_EmptyGsxbInterrupt(void); | ||
116 | void SDL_MintAudio_XbiosInterruptMeasureClock(void); | ||
117 | void SDL_MintAudio_XbiosInterrupt(void); | ||
118 | void SDL_MintAudio_Dma8Interrupt(void); | ||
119 | void SDL_MintAudio_StfaInterrupt(void); | ||
120 | |||
121 | #endif /* _SDL_mintaudio_h */ | ||