Mercurial > sdl-ios-xcode

annotate src/audio/mint/SDL_mintaudio.c @ 1768:814f9f2c7a33

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Fixed bug #80 Date: 21 Apr 2003 17:20:20 +0100 From: Alan Swanson <swanson@uklinux.net> Subject: [SDL] New XFree 4.3 Video Mode Patch If you look at the unsorted list of modes returned by X, here's mine; 1280 x 1024 @ 85.0 > 1024 x 768 @ 100.3 > USER 800 x 600 @ 125.5 > SET 640 x 480 @ 124.9 > 1280 x 1024 @ 75.0 ] 1280 x 1024 @ 60.0 ] 1280 x 960 @ 85.0 ] X11 1280 x 960 @ 60.0 ] AUTO 1152 x 864 @ 75.0 ]=20 1152 x 768 @ 54.8 ] 960 x 720 @ 120.0 ] ... 640 x 400 @ 85.1 ] 256k 576 x 432 @ 150.0 ] 249k PIXEL 640 x 350 @ 85.1 ] 224k COUNT 576 x 384 @ 109.6 ] 221k ... The user set modes come first followed by X set modes which are ordered by decreasing number of pixels and refresh. The reason why every other library or program not using SDL working is due to SDL scanning the modes in reverse getting X11 provided modes modes with the lowest refresh.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 05 May 2006 05:50:26 +0000
parents d910939febfa
children 14717b52abc0
rev   line source
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
1 /*
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
2 SDL - Simple DirectMedia Layer
769
b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents: 704
diff changeset
3 Copyright (C) 1997-2004 Sam Lantinga
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
4
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
5 This library is free software; you can redistribute it and/or
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
6 modify it under the terms of the GNU Library General Public
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
7 License as published by the Free Software Foundation; either
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
8 version 2 of the License, or (at your option) any later version.
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
9
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
10 This library is distributed in the hope that it will be useful,
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
13 Library General Public License for more details.
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
14
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
15 You should have received a copy of the GNU Library General Public
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
16 License along with this library; if not, write to the Free
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
18
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
19 Sam Lantinga
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
20 slouken@libsdl.org
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
21 */
1402
d910939febfa Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
22 #include "SDL_config.h"
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
23
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
24 /*
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
25 Audio interrupt variables and callback function
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
26
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
27 Patrice Mandin
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
28 */
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
29
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
30 #include <unistd.h>
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
31
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
32 #include <mint/osbind.h>
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
33 #include <mint/falcon.h>
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
34 #include <mint/mintbind.h>
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
35
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
36 #include "SDL_audio.h"
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
37 #include "SDL_mintaudio.h"
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
38 #include "SDL_mintaudio_stfa.h"
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
39
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
40 /* The audio device */
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
41
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
42 SDL_AudioDevice *SDL_MintAudio_device;
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
43 Uint8 *SDL_MintAudio_audiobuf[2]; /* Pointers to buffers */
704
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
44 unsigned long SDL_MintAudio_audiosize; /* Length of audio buffer=spec->size */
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
45 unsigned short SDL_MintAudio_numbuf; /* Buffer to play */
c4803992e09c Small bugfixes
Patrice Mandin <patmandin@gmail.com>
parents: 644
diff changeset
46 unsigned short SDL_MintAudio_mutex;
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
47 unsigned long SDL_MintAudio_clocktics;
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
48 cookie_stfa_t *SDL_MintAudio_stfa;
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
49
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
50 /* MiNT thread variables */
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
51 SDL_bool SDL_MintAudio_mint_present;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
52 SDL_bool SDL_MintAudio_quit_thread;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
53 SDL_bool SDL_MintAudio_thread_finished;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
54 long SDL_MintAudio_thread_pid;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
55
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
56 /* The callback function, called by each driver whenever needed */
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
57
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
58 void SDL_MintAudio_Callback(void)
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
59 {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
60 Uint8 *buffer;
1034
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
61 SDL_AudioDevice *audio = SDL_MintAudio_device;
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
62
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
63 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1116
diff changeset
64 SDL_memset(buffer, audio->spec.silence, audio->spec.size);
1034
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
65
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
66 if (audio->paused)
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
67 return;
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
68
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
69 if (audio->convert.needed) {
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
70 int silence;
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
71
1034
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
72 if ( audio->convert.src_format == AUDIO_U8 ) {
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
73 silence = 0x80;
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
74 } else {
1034
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
75 silence = 0;
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
76 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1116
diff changeset
77 SDL_memset(audio->convert.buf, silence, audio->convert.len);
1034
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
78 audio->spec.callback(audio->spec.userdata,
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
79 (Uint8 *)audio->convert.buf,audio->convert.len);
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
80 SDL_ConvertAudio(&audio->convert);
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1116
diff changeset
81 SDL_memcpy(buffer, audio->convert.buf, audio->convert.len_cvt);
1034
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
82 } else {
2eca15c3f609 clear convert.buf before filling it
Patrice Mandin <patmandin@gmail.com>
parents: 961
diff changeset
83 audio->spec.callback(audio->spec.userdata, buffer, audio->spec.size);
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
84 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
85 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
86
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
87 /* Add a new frequency/clock/predivisor to the current list */
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1034
diff changeset
88 void SDL_MintAudio_AddFrequency(_THIS, Uint32 frequency, Uint32 clock,
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1034
diff changeset
89 Uint32 prediv, int gpio_bits)
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
90 {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
91 int i, p;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
92
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
93 if (MINTAUDIO_freqcount==MINTAUDIO_maxfreqs) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
94 return;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
95 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
96
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
97 /* Search where to insert the frequency (highest first) */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
98 for (p=0; p<MINTAUDIO_freqcount; p++) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
99 if (frequency > MINTAUDIO_frequencies[p].frequency) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
100 break;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
101 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
102 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
103
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
104 /* Put all following ones farer */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
105 if (MINTAUDIO_freqcount>0) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
106 for (i=MINTAUDIO_freqcount; i>p; i--) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1116
diff changeset
107 SDL_memcpy(&MINTAUDIO_frequencies[i], &MINTAUDIO_frequencies[i-1], sizeof(mint_frequency_t));
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
108 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
109 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
110
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
111 /* And insert new one */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
112 MINTAUDIO_frequencies[p].frequency = frequency;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
113 MINTAUDIO_frequencies[p].masterclock = clock;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
114 MINTAUDIO_frequencies[p].predivisor = prediv;
1107
856f76a099c7 Can use both clocks of FDI interface on Falcon, plus digital output
Patrice Mandin <patmandin@gmail.com>
parents: 1034
diff changeset
115 MINTAUDIO_frequencies[p].gpio_bits = gpio_bits;
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
116
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
117 MINTAUDIO_freqcount++;
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
118 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
119
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
120 /* Search for the nearest frequency */
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
121 int SDL_MintAudio_SearchFrequency(_THIS, int desired_freq)
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
122 {
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
123 int i;
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
124
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
125 /* Only 1 freq ? */
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
126 if (MINTAUDIO_freqcount==1) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
127 return 0;
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
128 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
129
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
130 /* Check the array */
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
131 for (i=0; i<MINTAUDIO_freqcount; i++) {
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
132 if (desired_freq >= ((MINTAUDIO_frequencies[i].frequency+
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
133 MINTAUDIO_frequencies[i+1].frequency)>>1)) {
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
134 return i;
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
136 }
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137
644
594422ab8f9f Atari MiNT: added more audio drivers
Patrice Mandin <patmandin@gmail.com>
parents: 557
diff changeset
138 /* Not in the array, give the latest */
961
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200
Patrice Mandin <patmandin@gmail.com>
parents: 769
diff changeset
139 return MINTAUDIO_freqcount-1;
398
d219b0e02f5f Added Atari audio support (thanks Patrice!)
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 }
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
141
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
142 /* The thread function, used under MiNT with xbios */
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
143 int SDL_MintAudio_Thread(long param)
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
144 {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
145 SndBufPtr pointers;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
146 SDL_bool buffers_filled[2] = {SDL_FALSE, SDL_FALSE};
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
147
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
148 SDL_MintAudio_thread_finished = SDL_FALSE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
149 while (!SDL_MintAudio_quit_thread) {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
150 if (Buffptr(&pointers)!=0)
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
151 continue;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
152
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
153 if (( (unsigned long)pointers.play>=(unsigned long)SDL_MintAudio_audiobuf[0])
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
154 && ( (unsigned long)pointers.play<=(unsigned long)SDL_MintAudio_audiobuf[1]))
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
155 {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
156 /* DMA is reading buffer #0, setup buffer #1 if not already done */
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
157 if (!buffers_filled[1]) {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
158 SDL_MintAudio_numbuf = 1;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
159 SDL_MintAudio_Callback();
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
160 Setbuffer(0, SDL_MintAudio_audiobuf[1], SDL_MintAudio_audiobuf[1] + SDL_MintAudio_audiosize);
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
161 buffers_filled[1]=SDL_TRUE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
162 buffers_filled[0]=SDL_FALSE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
163 }
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
164 } else {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
165 /* DMA is reading buffer #1, setup buffer #0 if not already done */
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
166 if (!buffers_filled[0]) {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
167 SDL_MintAudio_numbuf = 0;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
168 SDL_MintAudio_Callback();
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
169 Setbuffer(0, SDL_MintAudio_audiobuf[0], SDL_MintAudio_audiobuf[0] + SDL_MintAudio_audiosize);
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
170 buffers_filled[0]=SDL_TRUE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
171 buffers_filled[1]=SDL_FALSE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
172 }
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
173 }
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
174
1116
080ed9ef0609 Sleep a bit less in thread
Patrice Mandin <patmandin@gmail.com>
parents: 1111
diff changeset
175 usleep(100);
1111
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
176 }
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
177 SDL_MintAudio_thread_finished = SDL_TRUE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
178 return 0;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
179 }
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
180
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
181 void SDL_MintAudio_WaitThread(void)
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
182 {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
183 if (!SDL_MintAudio_mint_present)
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
184 return;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
185
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
186 if (SDL_MintAudio_thread_finished)
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
187 return;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
188
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
189 SDL_MintAudio_quit_thread = SDL_TRUE;
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
190 while (!SDL_MintAudio_thread_finished) {
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
191 Syield();
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
192 }
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt
Patrice Mandin <patmandin@gmail.com>
parents: 1107
diff changeset
193 }