| 1 |
/* |
| 2 |
* audio.h - Audio support |
| 3 |
* |
| 4 |
* Basilisk II (C) 1997-2000 Christian Bauer |
| 5 |
* |
| 6 |
* This program is free software; you can redistribute it and/or modify |
| 7 |
* it under the terms of the GNU General Public License as published by |
| 8 |
* the Free Software Foundation; either version 2 of the License, or |
| 9 |
* (at your option) any later version. |
| 10 |
* |
| 11 |
* This program is distributed in the hope that it will be useful, |
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 |
* GNU General Public License for more details. |
| 15 |
* |
| 16 |
* You should have received a copy of the GNU General Public License |
| 17 |
* along with this program; if not, write to the Free Software |
| 18 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 |
*/ |
| 20 |
|
| 21 |
#ifndef AUDIO_H |
| 22 |
#define AUDIO_H |
| 23 |
|
| 24 |
extern int32 AudioDispatch(uint32 params, uint32 ti); |
| 25 |
|
| 26 |
extern bool AudioAvailable; // Flag: audio output available (from the software point of view) |
| 27 |
|
| 28 |
// System specific and internal functions/data |
| 29 |
extern void AudioInit(void); |
| 30 |
extern void AudioExit(void); |
| 31 |
|
| 32 |
extern void AudioInterrupt(void); |
| 33 |
|
| 34 |
extern void audio_enter_stream(void); |
| 35 |
extern void audio_exit_stream(void); |
| 36 |
|
| 37 |
extern void audio_set_sample_rate(int index); |
| 38 |
extern void audio_set_sample_size(int index); |
| 39 |
extern void audio_set_channels(int index); |
| 40 |
|
| 41 |
extern bool audio_get_main_mute(void); |
| 42 |
extern uint32 audio_get_main_volume(void); |
| 43 |
extern bool audio_get_speaker_mute(void); |
| 44 |
extern uint32 audio_get_speaker_volume(void); |
| 45 |
extern void audio_set_main_mute(bool mute); |
| 46 |
extern void audio_set_main_volume(uint32 vol); |
| 47 |
extern void audio_set_speaker_mute(bool mute); |
| 48 |
extern void audio_set_speaker_volume(uint32 vol); |
| 49 |
|
| 50 |
// Current audio status |
| 51 |
struct audio_status { |
| 52 |
uint32 sample_rate; // 16.16 fixed point |
| 53 |
uint32 sample_size; // 8 or 16 |
| 54 |
uint32 channels; // 1 (mono) or 2 (stereo) |
| 55 |
uint32 mixer; // Mac address of Apple Mixer |
| 56 |
int num_sources; // Number of active sources |
| 57 |
}; |
| 58 |
extern struct audio_status AudioStatus; |
| 59 |
|
| 60 |
extern bool audio_open; // Flag: audio is open and ready |
| 61 |
extern int audio_frames_per_block; // Number of audio frames per block |
| 62 |
extern uint32 audio_component_flags; // Component feature flags |
| 63 |
|
| 64 |
extern int audio_num_sample_rates; // Number of supported sample rates |
| 65 |
extern uint32 audio_sample_rates[]; // Array of supported sample rates (16.16 fixed point) |
| 66 |
extern int audio_num_sample_sizes; // Number of supported sample sizes |
| 67 |
extern uint16 audio_sample_sizes[]; // Array of supported sample sizes |
| 68 |
extern int audio_num_channel_counts; // Number of supported channel counts |
| 69 |
extern uint16 audio_channel_counts[]; // Array of supported channels counts |
| 70 |
|
| 71 |
// Audio component global data and 68k routines |
| 72 |
enum { |
| 73 |
adatDelegateCall = 0, // 68k code to call DelegateCall() |
| 74 |
adatOpenMixer = 14, // 68k code to call OpenMixerSoundComponent() |
| 75 |
adatCloseMixer = 36, // 68k code to call CloseMixerSoundComponent() |
| 76 |
adatGetInfo = 54, // 68k code to call GetInfo() |
| 77 |
adatSetInfo = 78, // 68k code to call SetInfo() |
| 78 |
adatPlaySourceBuffer = 102, // 68k code to call PlaySourceBuffer() |
| 79 |
adatGetSourceData = 126, // 68k code to call GetSourceData() |
| 80 |
adatData = 146, // SoundComponentData struct |
| 81 |
adatMixer = 174, // Mac address of mixer, returned by adatOpenMixer |
| 82 |
adatStreamInfo = 178, // Mac address of stream info, returned by adatGetSourceData |
| 83 |
SIZEOF_adat = 182 |
| 84 |
}; |
| 85 |
|
| 86 |
extern uint32 audio_data; // Mac address of global data area |
| 87 |
|
| 88 |
#endif |
