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- /*
- * audio.h - Audio support
- *
- * Basilisk II (C) 1997-2001 Christian Bauer
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
- #ifndef AUDIO_H
- #define AUDIO_H
-
- extern int32 AudioDispatch(uint32 params, uint32 ti);
-
- extern bool AudioAvailable; // Flag: audio output available (from the software point of view)
-
- extern int16 SoundInOpen(uint32 pb, uint32 dce);
- extern int16 SoundInPrime(uint32 pb, uint32 dce);
- extern int16 SoundInControl(uint32 pb, uint32 dce);
- extern int16 SoundInStatus(uint32 pb, uint32 dce);
- extern int16 SoundInClose(uint32 pb, uint32 dce);
-
- // System specific and internal functions/data
- extern void AudioInit(void);
- extern void AudioExit(void);
- extern void AudioReset(void);
-
- extern void AudioInterrupt(void);
-
- extern void audio_enter_stream(void);
- extern void audio_exit_stream(void);
-
- extern void audio_set_sample_rate(int index);
- extern void audio_set_sample_size(int index);
- extern void audio_set_channels(int index);
-
- extern bool audio_get_main_mute(void);
- extern uint32 audio_get_main_volume(void);
- extern bool audio_get_speaker_mute(void);
- extern uint32 audio_get_speaker_volume(void);
- extern void audio_set_main_mute(bool mute);
- extern void audio_set_main_volume(uint32 vol);
- extern void audio_set_speaker_mute(bool mute);
- extern void audio_set_speaker_volume(uint32 vol);
-
- // Current audio status
- struct audio_status {
- uint32 sample_rate; // 16.16 fixed point
- uint32 sample_size; // 8 or 16
- uint32 channels; // 1 (mono) or 2 (stereo)
- uint32 mixer; // Mac address of Apple Mixer
- int num_sources; // Number of active sources
- };
- extern struct audio_status AudioStatus;
-
- extern bool audio_open; // Flag: audio is open and ready
- extern int audio_frames_per_block; // Number of audio frames per block
- extern uint32 audio_component_flags; // Component feature flags
-
- extern int audio_num_sample_rates; // Number of supported sample rates
- extern uint32 audio_sample_rates[]; // Array of supported sample rates (16.16 fixed point)
- extern int audio_num_sample_sizes; // Number of supported sample sizes
- extern uint16 audio_sample_sizes[]; // Array of supported sample sizes
- extern int audio_num_channel_counts; // Number of supported channel counts
- extern uint16 audio_channel_counts[]; // Array of supported channels counts
-
- // Audio component global data and 68k routines
- enum {
- adatDelegateCall = 0, // 68k code to call DelegateCall()
- adatOpenMixer = 14, // 68k code to call OpenMixerSoundComponent()
- adatCloseMixer = 36, // 68k code to call CloseMixerSoundComponent()
- adatGetInfo = 54, // 68k code to call GetInfo()
- adatSetInfo = 78, // 68k code to call SetInfo()
- adatPlaySourceBuffer = 102, // 68k code to call PlaySourceBuffer()
- adatGetSourceData = 126, // 68k code to call GetSourceData()
- adatData = 146, // SoundComponentData struct
- adatMixer = 174, // Mac address of mixer, returned by adatOpenMixer
- adatStreamInfo = 178, // Mac address of stream info, returned by adatGetSourceData
- SIZEOF_adat = 182
- };
-
- extern uint32 audio_data; // Mac address of global data area
-
- #endif
-