src/dummy/audio_dummy.cpp

/*
 *  audio_dummy.cpp - Audio support, dummy implementation
 *
 *  Basilisk II (C) 1997-1999 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
 */

#include "sysdeps.h"
#include "prefs.h"
#include "audio.h"
#include "audio_defs.h"

#define DEBUG 0
#include "debug.h"


// Supported sample rates, sizes and channels
int audio_num_sample_rates = 1;
uint32 audio_sample_rates[] = {44100 << 16};
int audio_num_sample_sizes = 1;
uint16 audio_sample_sizes[] = {16};
int audio_num_channel_counts = 1;
uint16 audio_channel_counts[] = {2};


/*
 *  Initialization
 */

void AudioInit(void)
{
        // Init audio status and feature flags
        AudioStatus.sample_rate = audio_sample_rates[0];
        AudioStatus.sample_size = audio_sample_sizes[0];
        AudioStatus.channels = audio_channel_counts[0];
        AudioStatus.mixer = 0;
        AudioStatus.num_sources = 0;
        audio_component_flags = cmpWantsRegisterMessage | kStereoOut | k16BitOut;

        // Sound disabled in prefs? Then do nothing
        if (PrefsFindBool("nosound"))
                return;

        // Audio not available
        audio_open = false;
}


/*
 *  Deinitialization
 */

void AudioExit(void)
{
}


/*
 *  First source added, start audio stream
 */

void audio_enter_stream()
{
}


/*
 *  Last source removed, stop audio stream
 */

void audio_exit_stream()
{
}


/*
 *  MacOS audio interrupt, read next data block
 */

void AudioInterrupt(void)
{
        D(bug("AudioInterrupt\n"));
}


/*
 *  Set sampling parameters
 *  "index" is an index into the audio_sample_rates[] etc. arrays
 *  It is guaranteed that AudioStatus.num_sources == 0
 */

void audio_set_sample_rate(int index)
{
}

void audio_set_sample_size(int index)
{
}

void audio_set_channels(int index)
{
}


/*
 *  Get/set volume controls (volume values received/returned have the left channel
 *  volume in the upper 16 bits and the right channel volume in the lower 16 bits;
 *  both volumes are 8.8 fixed point values with 0x0100 meaning "maximum volume"))
 */

bool audio_get_main_mute(void)
{
        return false;
}

uint32 audio_get_main_volume(void)
{
        return 0x01000100;
}

bool audio_get_speaker_mute(void)
{
        return false;
}

uint32 audio_get_speaker_volume(void)
{
        return 0x01000100;
}

void audio_set_main_mute(bool mute)
{
}

void audio_set_main_volume(uint32 vol)
{
}

void audio_set_speaker_mute(bool mute)
{
}

void audio_set_speaker_volume(uint32 vol)
{
}
Revision:	1.2
Committed:	1999-10-20T15:13:59Z (25 years, 1 month ago) by cebix
Branch:	MAIN
CVS Tags:	snapshot-21101999, snapshot-22121999, release-0_8-1, snapshot-02111999
Changes since 1.1:	+4 -4 lines
Log Message:	- renamed main_volume to speaker_volume and dac_volume to main_volume (same for mute) - added defines for headphone volume/mute
#	User	Rev	Content
1	cebix	1.1	/*
2			* audio_dummy.cpp - Audio support, dummy implementation
3			*
4			* Basilisk II (C) 1997-1999 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			#include "sysdeps.h"
22			#include "prefs.h"
23			#include "audio.h"
24			#include "audio_defs.h"
25
26			#define DEBUG 0
27			#include "debug.h"
28
29
30			// Supported sample rates, sizes and channels
31			int audio_num_sample_rates = 1;
32			uint32 audio_sample_rates[] = {44100 << 16};
33			int audio_num_sample_sizes = 1;
34			uint16 audio_sample_sizes[] = {16};
35			int audio_num_channel_counts = 1;
36			uint16 audio_channel_counts[] = {2};
37
38
39			/*
40			* Initialization
41			*/
42
43			void AudioInit(void)
44			{
45			// Init audio status and feature flags
46			AudioStatus.sample_rate = audio_sample_rates[0];
47			AudioStatus.sample_size = audio_sample_sizes[0];
48			AudioStatus.channels = audio_channel_counts[0];
49			AudioStatus.mixer = 0;
50			AudioStatus.num_sources = 0;
51			audio_component_flags = cmpWantsRegisterMessage \| kStereoOut \| k16BitOut;
52
53			// Sound disabled in prefs? Then do nothing
54			if (PrefsFindBool("nosound"))
55			return;
56
57			// Audio not available
58			audio_open = false;
59			}
60
61
62			/*
63			* Deinitialization
64			*/
65
66			void AudioExit(void)
67			{
68			}
69
70
71			/*
72			* First source added, start audio stream
73			*/
74
75			void audio_enter_stream()
76			{
77			}
78
79
80			/*
81			* Last source removed, stop audio stream
82			*/
83
84			void audio_exit_stream()
85			{
86			}
87
88
89			/*
90			* MacOS audio interrupt, read next data block
91			*/
92
93			void AudioInterrupt(void)
94			{
95			D(bug("AudioInterrupt\n"));
96			}
97
98
99			/*
100			* Set sampling parameters
101			* "index" is an index into the audio_sample_rates[] etc. arrays
102			* It is guaranteed that AudioStatus.num_sources == 0
103			*/
104
105			void audio_set_sample_rate(int index)
106			{
107			}
108
109			void audio_set_sample_size(int index)
110			{
111			}
112
113			void audio_set_channels(int index)
114			{
115			}
116
117
118			/*
119			* Get/set volume controls (volume values received/returned have the left channel
120			* volume in the upper 16 bits and the right channel volume in the lower 16 bits;
121			* both volumes are 8.8 fixed point values with 0x0100 meaning "maximum volume"))
122			*/
123
124			bool audio_get_main_mute(void)
125			{
126			return false;
127			}
128
129			uint32 audio_get_main_volume(void)
130			{
131			return 0x01000100;
132			}
133
134	cebix	1.2	bool audio_get_speaker_mute(void)
135	cebix	1.1	{
136			return false;
137			}
138
139	cebix	1.2	uint32 audio_get_speaker_volume(void)
140	cebix	1.1	{
141			return 0x01000100;
142			}
143
144			void audio_set_main_mute(bool mute)
145			{
146			}
147
148			void audio_set_main_volume(uint32 vol)
149			{
150			}
151
152	cebix	1.2	void audio_set_speaker_mute(bool mute)
153	cebix	1.1	{
154			}
155
156	cebix	1.2	void audio_set_speaker_volume(uint32 vol)
157	cebix	1.1	{
158			}