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

annotate src/audio/dsp/SDL_dspaudio.c @ 3816:9d070c1a45fa SDL-ryan-multiple-audio-device

Moved AudioBootstrap section in converted drivers to bottom of source, so I could delete the predeclarations (one more thing to forget to update when changing the API, otherwise). There're a few other cleanups that snuck into this commit, too.

author	Ryan C. Gordon <icculus@icculus.org>
date	Fri, 06 Oct 2006 04:46:58 +0000
parents	2c5387c0a642
children	103bbe13f5eb

rev	line source
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	1 /*
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	2 SDL - Simple DirectMedia Layer
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1281 diff changeset	3 Copyright (C) 1997-2006 Sam Lantinga
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	4
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	5 This library is free software; you can redistribute it and/or
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1281 diff changeset	6 modify it under the terms of the GNU Lesser General Public
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1281 diff changeset	8 version 2.1 of the License, or (at your option) any later version.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	9
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1281 diff changeset	13 Lesser General Public License for more details.
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
1312 c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1281 diff changeset	15 You should have received a copy of the GNU Lesser General Public
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1281 diff changeset	16 License along with this library; if not, write to the Free Software
c9b51268668f Updated copyright information and removed rcs id lines (problematic in branch merges) Sam Lantinga <slouken@libsdl.org> parents: 1281 diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	18
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	19 Sam Lantinga
252 e8157fcb3114 Updated the source with the correct e-mail address Sam Lantinga <slouken@libsdl.org> parents: 248 diff changeset	20 slouken@libsdl.org
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	21
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	22 Modified in Oct 2004 by Hannu Savolainen
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	23 hannu@opensound.com
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1361 diff changeset	25 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	27 /* Allow access to a raw mixing buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	28
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	29 #include <stdio.h> /* For perror() */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	30 #include <string.h> /* For strerror() */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	31 #include <errno.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	32 #include <unistd.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	33 #include <fcntl.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	34 #include <signal.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	35 #include <sys/time.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36 #include <sys/ioctl.h>
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	37 #include <sys/stat.h>
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	38
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	39 #if SDL_AUDIO_DRIVER_OSS_SOUNDCARD_H
94 ae6e6b73333f Cleaned up the OpenBSD port, thanks to Peter Valchev Sam Lantinga <slouken@lokigames.com> parents: 93 diff changeset	40 /* This is installed on some systems */
ae6e6b73333f Cleaned up the OpenBSD port, thanks to Peter Valchev Sam Lantinga <slouken@lokigames.com> parents: 93 diff changeset	41 #include <soundcard.h>
ae6e6b73333f Cleaned up the OpenBSD port, thanks to Peter Valchev Sam Lantinga <slouken@lokigames.com> parents: 93 diff changeset	42 #else
ae6e6b73333f Cleaned up the OpenBSD port, thanks to Peter Valchev Sam Lantinga <slouken@lokigames.com> parents: 93 diff changeset	43 /* This is recommended by OSS */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44 #include <sys/soundcard.h>
94 ae6e6b73333f Cleaned up the OpenBSD port, thanks to Peter Valchev Sam Lantinga <slouken@lokigames.com> parents: 93 diff changeset	45 #endif
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	46
1358 c71e05b4dc2e More header massaging... works great on Windows. ;-) Sam Lantinga <slouken@libsdl.org> parents: 1341 diff changeset	47 #include "SDL_timer.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	48 #include "SDL_audio.h"
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	49 #include "../SDL_audiomem.h"
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	50 #include "../SDL_audio_c.h"
19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	51 #include "../SDL_audiodev_c.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	52 #include "SDL_dspaudio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	53
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	54 /* The tag name used by DSP audio */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	55 #define DSP_DRIVER_NAME "dsp"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	56
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	57 /* Open the audio device for playback, and don't block if busy */
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	58 #define OPEN_FLAGS_OUTPUT (O_WRONLY\|O_NONBLOCK)
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	59 #define OPEN_FLAGS_INPUT (O_RDONLY\|O_NONBLOCK)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	60
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	61 /* Audio driver bootstrap functions */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	62
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	63 static char **outputDevices = NULL;
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	64 static int outputDeviceCount = 0;
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	65 static char **inputDevices = NULL;
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	66 static int inputDeviceCount = 0;
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	67
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	68 static inline void
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	69 free_device_list(char **devs, int count)
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	70 {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	71 SDL_FreeUnixAudioDevices(devs, count);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	72 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	73
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	74 static inline void
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	75 build_device_list(int iscapture, char **devs, int count)
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	76 {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	77 const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	78 free_device_list(devs, count);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	79 SDL_EnumUnixAudioDevices(flags, 0, NULL, devs, count);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	80 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	81
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	82 static inline void
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	83 build_device_lists(void)
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	84 {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	85 build_device_list(0, &outputDevices, &outputDeviceCount);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	86 build_device_list(1, &inputDevices, &inputDeviceCount);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	87 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	88
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	89
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	90 static inline void
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	91 free_device_lists(void)
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	92 {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	93 free_device_list(&outputDevices, &outputDeviceCount);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	94 free_device_list(&inputDevices, &inputDeviceCount);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	95 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	96
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	97
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	98 static int
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	99 DSP_Available(void)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	100 {
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	101 int available = 0;
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	102 build_device_lists();
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	103 available = ((outputDeviceCount > 0) \|\| (inputDeviceCount > 0));
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	104 free_device_lists();
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	105 return available;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	106 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	107
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	108
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	109 static void DSP_Deinitialize(void)
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	110 {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	111 free_device_lists();
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	112 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	113
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	114
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	115 static int
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	116 DSP_DetectDevices(int iscapture)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	117 {
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	118 if (iscapture) {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	119 build_device_list(1, &inputDevices, &inputDeviceCount);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	120 return inputDeviceCount;
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	121 } else {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	122 build_device_list(0, &outputDevices, &outputDeviceCount);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	123 return outputDeviceCount;
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	124 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	125
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	126 return 0; /* shouldn't ever hit this. */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	127 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	128
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	129 static const char *
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	130 DSP_GetDeviceName(int index, int iscapture)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	131 {
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	132 if ((iscapture) && (index < inputDeviceCount)) {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	133 return inputDevices[index];
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	134 } else if ((!iscapture) && (index < outputDeviceCount)) {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	135 return outputDevices[index];
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	136 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	137
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	138 SDL_SetError("No such device");
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	139 return NULL;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	140 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	141
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	142
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	143 static int
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	144 DSP_OpenDevice(_THIS, const char *devname, int iscapture)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	145 {
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	146 const int flags = ((iscapture) ? OPEN_FLAGS_INPUT : OPEN_FLAGS_OUTPUT);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	147 int format;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	148 int value;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	149 int frag_spec;
1982 3b4ce57c6215 First shot at new audio data types (int32 and float32). Ryan C. Gordon <icculus@icculus.org> parents: 1895 diff changeset	150 SDL_AudioFormat test_format;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	151
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	152 /* We don't care what the devname is...we'll try to open anything. */
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	153 /* ...but default to first name in the list... */
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	154 if (devname == NULL) {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	155 if ( ((iscapture) && (inputDeviceCount == 0)) \|\|
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	156 ((!iscapture) && (outputDeviceCount == 0)) ) {
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	157 SDL_SetError("No such audio device");
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	158 return 0;
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	159 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	160 devname = ((iscapture) ? inputDevices[0] : outputDevices[0]);
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	161 }
2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	162
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	163 /* Initialize all variables that we clean on shutdown */
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	164 this->hidden = (struct SDL_PrivateAudioData *)
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	165 SDL_malloc((sizeof *this->hidden));
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	166 if (this->hidden == NULL) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	167 SDL_OutOfMemory();
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	168 return 0;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	169 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	170 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	171 this->hidden->audio_fd = -1;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	172
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	173 /* Open the audio device */
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	174 this->hidden->audio_fd = open(devname, flags, 0);
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	175 if (this->hidden->audio_fd < 0) {
3810 2c5387c0a642 Multiple audio device code is now working for dsp and dma targets. Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	176 SDL_SetError("Couldn't open %s: %s", devname, strerror(errno));
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	177 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	178 }
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	179 this->hidden->mixbuf = NULL;
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	180
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	181 /* Make the file descriptor use blocking writes with fcntl() */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	182 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	183 long flags;
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	184 flags = fcntl(this->hidden->audio_fd, F_GETFL);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	185 flags &= ~O_NONBLOCK;
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	186 if (fcntl(this->hidden->audio_fd, F_SETFL, flags) < 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	187 SDL_SetError("Couldn't set audio blocking mode");
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	188 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	189 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	190 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	191 }
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	192
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	193 /* Get a list of supported hardware formats */
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	194 if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_GETFMTS, &value) < 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	195 perror("SNDCTL_DSP_GETFMTS");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	196 SDL_SetError("Couldn't get audio format list");
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	197 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	198 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	199 }
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	200
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	201 /* Try for a closest match on audio format */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	202 format = 0;
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	203 for (test_format = SDL_FirstAudioFormat(this->spec.format);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	204 !format && test_format;) {
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	205 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	206 fprintf(stderr, "Trying format 0x%4.4x\n", test_format);
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	207 #endif
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	208 switch (test_format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	209 case 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: 1612 diff changeset	210 if (value & AFMT_U8) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	211 format = AFMT_U8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	212 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	213 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	214 case AUDIO_S16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	215 if (value & AFMT_S16_LE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	216 format = AFMT_S16_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	217 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	218 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	219 case AUDIO_S16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	220 if (value & AFMT_S16_BE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	221 format = AFMT_S16_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	222 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	223 break;
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	224 #if 0
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	225 /*
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	226 * These formats are not used by any real life systems so they are not
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	227 * needed here.
4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 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: 1612 diff changeset	229 case AUDIO_S8:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	230 if (value & AFMT_S8) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	231 format = AFMT_S8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	232 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	233 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	234 case AUDIO_U16LSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	235 if (value & AFMT_U16_LE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	236 format = AFMT_U16_LE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	237 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	238 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	239 case AUDIO_U16MSB:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	240 if (value & AFMT_U16_BE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	241 format = AFMT_U16_BE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	242 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	243 break;
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	244 #endif
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	245 default:
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	246 format = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	247 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	248 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	249 if (!format) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	250 test_format = SDL_NextAudioFormat();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	251 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	252 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	253 if (format == 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	254 SDL_SetError("Couldn't find any hardware audio formats");
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	255 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	256 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	257 }
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	258 this->spec.format = test_format;
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	259
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	260 /* Set the audio format */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	261 value = format;
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	262 if ( (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SETFMT, &value) < 0) \|\|
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	263 (value != format) ) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	264 perror("SNDCTL_DSP_SETFMT");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	265 SDL_SetError("Couldn't set audio format");
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	266 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	267 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	268 }
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	269
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	270 /* Set the number of channels of output */
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	271 value = this->spec.channels;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	272 if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_CHANNELS, &value) < 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	273 perror("SNDCTL_DSP_CHANNELS");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	274 SDL_SetError("Cannot set the number of channels");
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	275 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	276 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	277 }
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	278 this->spec.channels = value;
968 4675910b0b7b Date: Mon, 11 Oct 2004 15:17:27 +0300 (EEST) Sam Lantinga <slouken@libsdl.org> parents: 960 diff changeset	279
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	280 /* Set the DSP frequency */
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	281 value = this->spec.freq;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	282 if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SPEED, &value) < 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	283 perror("SNDCTL_DSP_SPEED");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	284 SDL_SetError("Couldn't set audio frequency");
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	285 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	286 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	287 }
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	288 this->spec.freq = value;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	289
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	290 /* Calculate the final parameters for this audio specification */
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	291 SDL_CalculateAudioSpec(&this->spec);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	292
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	293 /* Determine the power of two of the fragment size */
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	294 for (frag_spec = 0; (0x01U << frag_spec) < this->spec.size; ++frag_spec);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	295 if ((0x01U << frag_spec) != this->spec.size) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	296 SDL_SetError("Fragment size must be a power of two");
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	297 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	298 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	299 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	300 frag_spec \|= 0x00020000; /* two fragments, for low latency */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	301
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	302 /* Set the audio buffering parameters */
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	303 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	304 fprintf(stderr, "Requesting %d fragments of size %d\n",
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	305 (frag_spec >> 16), 1 << (frag_spec & 0xFFFF));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	306 #endif
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	307 if (ioctl(this->hidden->audio_fd, SNDCTL_DSP_SETFRAGMENT, &frag_spec) < 0) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	308 perror("SNDCTL_DSP_SETFRAGMENT");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	309 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	310 #ifdef DEBUG_AUDIO
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	311 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	312 audio_buf_info info;
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	313 ioctl(this->hidden->audio_fd, SNDCTL_DSP_GETOSPACE, &info);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	314 fprintf(stderr, "fragments = %d\n", info.fragments);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	315 fprintf(stderr, "fragstotal = %d\n", info.fragstotal);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	316 fprintf(stderr, "fragsize = %d\n", info.fragsize);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	317 fprintf(stderr, "bytes = %d\n", info.bytes);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	318 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	319 #endif
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	320
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	321 /* Allocate mixing buffer */
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	322 this->hidden->mixlen = this->spec.size;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	323 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	324 if (this->hidden->mixbuf == NULL) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	325 DSP_CloseDevice(this);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	326 return 0;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	327 }
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	328 SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	329
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	330 /* We're ready to rock and roll. :-) */
3795 589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	331 return 1;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	332 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	333
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	334
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	335 static void
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	336 DSP_PlayDevice(_THIS)
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	337 {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	338 const Uint8 *mixbuf = this->hidden->mixbuf;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	339 const int mixlen = this->hidden->mixlen;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	340 if (write(this->hidden->audio_fd, mixbuf, mixlen) == -1) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	341 perror("Audio write");
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	342 this->enabled = 0;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	343 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	344 #ifdef DEBUG_AUDIO
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	345 fprintf(stderr, "Wrote %d bytes of audio data\n", mixlen);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	346 #endif
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	347 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	348
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	349 static Uint8 *
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	350 DSP_GetDeviceBuf(_THIS)
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	351 {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	352 return (this->hidden->mixbuf);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	353 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	354
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	355 static void
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	356 DSP_CloseDevice(_THIS)
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	357 {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	358 if (this->hidden != NULL) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	359 if (this->hidden->mixbuf != NULL) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	360 SDL_FreeAudioMem(this->hidden->mixbuf);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	361 this->hidden->mixbuf = NULL;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	362 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	363 if (this->hidden->audio_fd >= 0) {
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	364 close(this->hidden->audio_fd);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	365 this->hidden->audio_fd = -1;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	366 }
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	367 SDL_free(this->hidden);
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	368 this->hidden = NULL;
589bc3d060cd More 1.3 audio work...moved dsp and dma drivers over to new model. Untested! Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	369 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	370 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	371
3816 9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	372 static int
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	373 DSP_Init(SDL_AudioDriverImpl *impl)
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	374 {
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	375 /* Set the function pointers */
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	376 impl->DetectDevices = DSP_DetectDevices;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	377 impl->GetDeviceName = DSP_GetDeviceName;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	378 impl->OpenDevice = DSP_OpenDevice;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	379 impl->PlayDevice = DSP_PlayDevice;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	380 impl->GetDeviceBuf = DSP_GetDeviceBuf;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	381 impl->CloseDevice = DSP_CloseDevice;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	382 impl->Deinitialize = DSP_Deinitialize;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	383
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	384 build_device_lists();
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	385 return 1;
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	386 }
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	387
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	388
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	389 AudioBootStrap DSP_bootstrap = {
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	390 DSP_DRIVER_NAME, "OSS /dev/dsp standard audio",
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	391 DSP_Available, DSP_Init, 0
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	392 };
9d070c1a45fa Moved AudioBootstrap section in converted drivers to bottom of source, so I Ryan C. Gordon <icculus@icculus.org> parents: 3810 diff changeset	393
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1612 diff changeset	394 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/audio/dsp/SDL_dspaudio.c @ 3816:9d070c1a45fa SDL-ryan-multiple-audio-device