sdl-ios-xcode: src/audio/mint/SDL

annotate src/audio/mint/SDL_mintaudio.c @ 3191:91b335df6fc8

Fixed bug #750 Since many different event structures include windowID it should be placed near the beginning of the structure (preferably right after type) so it's position is the same between different events. This is to avoid code like this: if (event.type == SDL_WINDOWEVENT) win = event.window.windowID; else if ((SDL_EVENTMASK(event.type) & SDL_KEYEVENTMASK) != 0) win = event.key.windowID; else if (event.type == SDL_TEXTINPUT) win = event.text.windowID; else if (event.type == SDL_MOUSEMOTION) win = event.motion.windowID; else if ((SDL_EVENTMASK(event.type) & (SDL_MOUBUTTONDOWNMASK | SDL_MOUBUTTONUPMASK)) != 0) win = event.button.windowID; else if (event.type == SDL_MOUSEWHEEL) win = event.wheel.windowID; ... in favor of: win = event.window.windowID;

author	Sam Lantinga <slouken@libsdl.org>
date	Wed, 10 Jun 2009 14:00:21 +0000
parents	99210400e8b9
children

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
2859 99210400e8b9 Updated copyright date Sam Lantinga <slouken@libsdl.org> parents: 2187 diff changeset	3 Copyright (C) 1997-2009 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>
2187 0b24732b1134 Missing include file Patrice Mandin <patmandin@gmail.com> parents: 2043 diff changeset	35 #include <mint/cookie.h>
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	36
d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	37 #include "SDL_audio.h"
d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	38 #include "SDL_mintaudio.h"
644 594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: 557 diff changeset	39 #include "SDL_mintaudio_stfa.h"
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	40
644 594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: 557 diff changeset	41 /* The audio device */
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	42
644 594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: 557 diff changeset	43 SDL_AudioDevice *SDL_MintAudio_device;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	44 Uint8 SDL_MintAudio_audiobuf[2]; / Pointers to buffers */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	45 unsigned long SDL_MintAudio_audiosize; /* Length of audio buffer=spec->size */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	46 volatile unsigned short SDL_MintAudio_numbuf; /* Buffer to play */
1819 63a45a87a57e Forgot to declare volatile stuff also in c file Patrice Mandin <patmandin@gmail.com> parents: 1402 diff changeset	47 volatile unsigned short SDL_MintAudio_mutex;
63a45a87a57e Forgot to declare volatile stuff also in c file Patrice Mandin <patmandin@gmail.com> parents: 1402 diff changeset	48 volatile unsigned long SDL_MintAudio_clocktics;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	49 cookie_stfa_t *SDL_MintAudio_stfa;
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	50
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	51 /* 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	52 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	53 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	54 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	55 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	56
644 594422ab8f9f Atari MiNT: added more audio drivers Patrice Mandin <patmandin@gmail.com> parents: 557 diff changeset	57 /* 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	58
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	59 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	60 SDL_MintAudio_Callback(void)
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	61 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	62 Uint8 *buffer;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	63 SDL_AudioDevice *audio = SDL_MintAudio_device;
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	64
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	65 buffer = SDL_MintAudio_audiobuf[SDL_MintAudio_numbuf];
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	66 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	67
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	68 if (audio->paused)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	69 return;
1034 2eca15c3f609 clear convert.buf before filling it Patrice Mandin <patmandin@gmail.com> parents: 961 diff changeset	70
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	71 if (audio->convert.needed) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	72 int silence;
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	73
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	74 if (audio->convert.src_format == AUDIO_U8) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	75 silence = 0x80;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	76 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	77 silence = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	78 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	79 SDL_memset(audio->convert.buf, silence, audio->convert.len);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	80 audio->spec.callback(audio->spec.userdata,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	81 (Uint8 *) audio->convert.buf,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	82 audio->convert.len);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	83 SDL_ConvertAudio(&audio->convert);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	84 SDL_memcpy(buffer, audio->convert.buf, audio->convert.len_cvt);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	85 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	86 audio->spec.callback(audio->spec.userdata, buffer, audio->spec.size);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	87 }
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	88 }
d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	89
961 185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200 Patrice Mandin <patmandin@gmail.com> parents: 769 diff changeset	90 /* Add a new frequency/clock/predivisor to the current list */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	91 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	92 SDL_MintAudio_AddFrequency(_THIS, Uint32 frequency, Uint32 clock,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	93 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	94 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	95 int i, p;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	96
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	97 if (MINTAUDIO_freqcount == MINTAUDIO_maxfreqs) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	98 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	99 }
961 185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200 Patrice Mandin <patmandin@gmail.com> parents: 769 diff changeset	100
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	101 /* Search where to insert the frequency (highest first) */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	102 for (p = 0; p < MINTAUDIO_freqcount; p++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	103 if (frequency > MINTAUDIO_frequencies[p].frequency) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	104 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	105 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	106 }
961 185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200 Patrice Mandin <patmandin@gmail.com> parents: 769 diff changeset	107
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	108 /* Put all following ones farer */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	109 if (MINTAUDIO_freqcount > 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	110 for (i = MINTAUDIO_freqcount; i > p; i--) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	111 SDL_memcpy(&MINTAUDIO_frequencies[i],
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	112 &MINTAUDIO_frequencies[i - 1],
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	113 sizeof(mint_frequency_t));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	114 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	115 }
961 185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200 Patrice Mandin <patmandin@gmail.com> parents: 769 diff changeset	116
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	117 /* And insert new one */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	118 MINTAUDIO_frequencies[p].frequency = frequency;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	119 MINTAUDIO_frequencies[p].masterclock = clock;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	120 MINTAUDIO_frequencies[p].predivisor = prediv;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	121 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	122
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	123 MINTAUDIO_freqcount++;
961 185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200 Patrice Mandin <patmandin@gmail.com> parents: 769 diff changeset	124 }
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200 Patrice Mandin <patmandin@gmail.com> parents: 769 diff changeset	125
185acc07127a Date: Fri, 29 Oct 2004 11:47:09 +0200 Patrice Mandin <patmandin@gmail.com> parents: 769 diff changeset	126 /* Search for the nearest frequency */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	127 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	128 SDL_MintAudio_SearchFrequency(_THIS, int desired_freq)
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	129 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	130 int i;
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	131
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	132 /* Only 1 freq ? */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	133 if (MINTAUDIO_freqcount == 1) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	134 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	135 }
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	136
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	137 /* Check the array */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	138 for (i = 0; i < MINTAUDIO_freqcount; i++) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	139 if (desired_freq >= ((MINTAUDIO_frequencies[i].frequency +
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	140 MINTAUDIO_frequencies[i + 1].frequency) >> 1)) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	141 return i;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	142 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	143 }
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	144
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	145 /* Not in the array, give the latest */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	146 return MINTAUDIO_freqcount - 1;
398 d219b0e02f5f Added Atari audio support (thanks Patrice!) Sam Lantinga <slouken@libsdl.org> parents: diff changeset	147 }
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	148
2027 d48ead2d2ba5 Save/restore FPU registers in interrupt Patrice Mandin <patmandin@gmail.com> parents: 1895 diff changeset	149 /* Check if FPU is present */
2043 adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	150 void
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	151 SDL_MintAudio_CheckFpu(void)
2027 d48ead2d2ba5 Save/restore FPU registers in interrupt Patrice Mandin <patmandin@gmail.com> parents: 1895 diff changeset	152 {
2043 adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	153 unsigned long cookie_fpu;
2027 d48ead2d2ba5 Save/restore FPU registers in interrupt Patrice Mandin <patmandin@gmail.com> parents: 1895 diff changeset	154
2043 adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	155 SDL_MintAudio_hasfpu = 0;
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	156 if (Getcookie(C__FPU, &cookie_fpu) != C_FOUND) {
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	157 return;
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	158 }
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	159 switch ((cookie_fpu >> 16) & 0xfffe) {
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	160 case 2:
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	161 case 4:
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	162 case 6:
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	163 case 8:
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	164 case 16:
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	165 SDL_MintAudio_hasfpu = 1;
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	166 break;
adf732f1f016 Formatting update Sam Lantinga <slouken@libsdl.org> parents: 2027 diff changeset	167 }
2027 d48ead2d2ba5 Save/restore FPU registers in interrupt Patrice Mandin <patmandin@gmail.com> parents: 1895 diff changeset	168 }
d48ead2d2ba5 Save/restore FPU registers in interrupt Patrice Mandin <patmandin@gmail.com> parents: 1895 diff changeset	169
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	170 /* The thread function, used under MiNT with xbios */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	171 int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	172 SDL_MintAudio_Thread(long param)
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	173 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	174 SndBufPtr pointers;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	175 SDL_bool buffers_filled[2] = { SDL_FALSE, SDL_FALSE };
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	176
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	177 SDL_MintAudio_thread_finished = SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	178 while (!SDL_MintAudio_quit_thread) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	179 if (Buffptr(&pointers) != 0)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	180 continue;
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	181
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	182 if (((unsigned long) pointers.play >=
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	183 (unsigned long) SDL_MintAudio_audiobuf[0])
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	184 && ((unsigned long) pointers.play <=
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	185 (unsigned long) SDL_MintAudio_audiobuf[1])) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	186 /* DMA is reading buffer #0, setup buffer #1 if not already done */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	187 if (!buffers_filled[1]) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	188 SDL_MintAudio_numbuf = 1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	189 SDL_MintAudio_Callback();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	190 Setbuffer(0, SDL_MintAudio_audiobuf[1],
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	191 SDL_MintAudio_audiobuf[1] +
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	192 SDL_MintAudio_audiosize);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	193 buffers_filled[1] = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	194 buffers_filled[0] = SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	195 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	196 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	197 /* DMA is reading buffer #1, setup buffer #0 if not already done */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	198 if (!buffers_filled[0]) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	199 SDL_MintAudio_numbuf = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	200 SDL_MintAudio_Callback();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	201 Setbuffer(0, SDL_MintAudio_audiobuf[0],
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	202 SDL_MintAudio_audiobuf[0] +
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	203 SDL_MintAudio_audiosize);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	204 buffers_filled[0] = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	205 buffers_filled[1] = SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	206 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	207 }
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	208
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	209 usleep(100);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	210 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	211 SDL_MintAudio_thread_finished = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	212 return 0;
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	213 }
12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	214
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	215 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	216 SDL_MintAudio_WaitThread(void)
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	217 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	218 if (!SDL_MintAudio_mint_present)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	219 return;
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	220
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	221 if (SDL_MintAudio_thread_finished)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	222 return;
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	223
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	224 SDL_MintAudio_quit_thread = SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	225 while (!SDL_MintAudio_thread_finished) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	226 Syield();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	227 }
1111 12c49532be00 Use MiNT thread to update DMA pointers instead of unusable MFP interrupt Patrice Mandin <patmandin@gmail.com> parents: 1107 diff changeset	228 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	229
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1819 diff changeset	230 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/audio/mint/SDL_mintaudio.c @ 3191:91b335df6fc8