sdl-ios-xcode: src/audio/alsa/SDL_alsa

annotate src/audio/alsa/SDL_alsa_audio.c @ 3846:66fb40445587 SDL-ryan-multiple-audio-device

Removed distinction between "available" and "init" in audio backends, since both had to be checked for success as a pair at the higher level and several of the Available methods were just always-succeed placeholders anyhow. Now the availability check is done in the init code, and the higher level tries all possible drivers until one manages to initialize successfully.

author	Ryan C. Gordon <icculus@icculus.org>
date	Tue, 17 Oct 2006 09:09:21 +0000
parents	ee5dfa7f7993
children

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
769 b8d311d90021 Updated copyright information for 2004 (Happy New Year!) Sam Lantinga <slouken@libsdl.org> parents: 765 diff changeset	3 Copyright (C) 1997-2004 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
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	6 modify it under the terms of the GNU Library General Public
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	7 License as published by the Free Software Foundation; either
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	8 version 2 of the License, or (at your option) any later version.
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
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	13 Library General Public License for more details.
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	14
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	15 You should have received a copy of the GNU Library General Public
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	16 License along with this library; if not, write to the Free
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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: 0 diff changeset	20 slouken@libsdl.org
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	21 */
1402 d910939febfa Use consistent identifiers for the various platforms we support. Sam Lantinga <slouken@libsdl.org> parents: 1379 diff changeset	22 #include "SDL_config.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	23
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	24 /* Allow access to a raw mixing buffer */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	25
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	26 #include <sys/types.h>
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	27 #include <signal.h> /* For kill() */
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	28 #include <dlfcn.h>
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	29 #include <errno.h>
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	30 #include <string.h>
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	31
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	32 #include "SDL_timer.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	33 #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	34 #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	35 #include "../SDL_audio_c.h"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	36 #include "SDL_alsa_audio.h"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	37
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	38
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	39 /* The tag name used by ALSA audio */
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	40 #define DRIVER_NAME "alsa"
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	41
354 30935e76acb5 Updated ALSA audio support for ALSA 0.9 Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	42 /* The default ALSA audio driver */
765 4c2ba6161939 Editors Note: The original patch was modified to use SDL_Delay() instead of Sam Lantinga <slouken@libsdl.org> parents: 547 diff changeset	43 #define DEFAULT_DEVICE "default"
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	44
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	45 static int (*ALSA_snd_pcm_open)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	46 (snd_pcm_t *, const char , snd_pcm_stream_t, int);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	47 static int (ALSA_snd_pcm_close)(snd_pcm_t pcm);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	48 static snd_pcm_sframes_t(*ALSA_snd_pcm_writei)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	49 (snd_pcm_t ,const void , snd_pcm_uframes_t);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	50 static int (ALSA_snd_pcm_resume)(snd_pcm_t );
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	51 static int (ALSA_snd_pcm_prepare)(snd_pcm_t );
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	52 static int (ALSA_snd_pcm_drain)(snd_pcm_t );
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	53 static const char (ALSA_snd_strerror)(int);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	54 static size_t(*ALSA_snd_pcm_hw_params_sizeof)(void);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	55 static size_t(*ALSA_snd_pcm_sw_params_sizeof)(void);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	56 static int (ALSA_snd_pcm_hw_params_any)(snd_pcm_t , snd_pcm_hw_params_t *);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	57 static int (*ALSA_snd_pcm_hw_params_set_access)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	58 (snd_pcm_t , snd_pcm_hw_params_t , snd_pcm_access_t);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	59 static int (*ALSA_snd_pcm_hw_params_set_format)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	60 (snd_pcm_t , snd_pcm_hw_params_t , snd_pcm_format_t);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	61 static int (*ALSA_snd_pcm_hw_params_set_channels)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	62 (snd_pcm_t , snd_pcm_hw_params_t , unsigned int);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	63 static int (ALSA_snd_pcm_hw_params_get_channels)(const snd_pcm_hw_params_t );
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	64 static unsigned int (*ALSA_snd_pcm_hw_params_set_rate_near)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	65 (snd_pcm_t , snd_pcm_hw_params_t , unsigned int, int *);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	66 static snd_pcm_uframes_t (*ALSA_snd_pcm_hw_params_set_period_size_near)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	67 (snd_pcm_t , snd_pcm_hw_params_t , snd_pcm_uframes_t, int *);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	68 static snd_pcm_sframes_t (*ALSA_snd_pcm_hw_params_get_period_size)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	69 (const snd_pcm_hw_params_t *);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	70 static unsigned int (*ALSA_snd_pcm_hw_params_set_periods_near)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	71 (snd_pcm_t ,snd_pcm_hw_params_t , unsigned int, int *);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	72 static int (ALSA_snd_pcm_hw_params_get_periods)(snd_pcm_hw_params_t );
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	73 static int (ALSA_snd_pcm_hw_params)(snd_pcm_t , snd_pcm_hw_params_t *);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	74 static int (ALSA_snd_pcm_sw_params_current)(snd_pcm_t, snd_pcm_sw_params_t*);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	75 static int (*ALSA_snd_pcm_sw_params_set_start_threshold)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	76 (snd_pcm_t , snd_pcm_sw_params_t , snd_pcm_uframes_t);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	77 static int (*ALSA_snd_pcm_sw_params_set_avail_min)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	78 (snd_pcm_t , snd_pcm_sw_params_t , snd_pcm_uframes_t);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	79 static int (ALSA_snd_pcm_sw_params)(snd_pcm_t , snd_pcm_sw_params_t *);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	80 static int (ALSA_snd_pcm_nonblock)(snd_pcm_t , int);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	81 #define snd_pcm_hw_params_sizeof ALSA_snd_pcm_hw_params_sizeof
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	82 #define snd_pcm_sw_params_sizeof ALSA_snd_pcm_sw_params_sizeof
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	83
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	84
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	85 #ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	86
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	87 static const char *alsa_library = SDL_AUDIO_DRIVER_ALSA_DYNAMIC;
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	88 static void *alsa_handle = NULL;
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	89
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	90 static int
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	91 load_alsa_sym(const char fn, void *addr)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	92 {
3824 25052dd25810 Minor ALSA dynamic loading fix. Ryan C. Gordon <icculus@icculus.org> parents: 3819 diff changeset	93 /*
25052dd25810 Minor ALSA dynamic loading fix. Ryan C. Gordon <icculus@icculus.org> parents: 3819 diff changeset	94 * !!! FIXME:
25052dd25810 Minor ALSA dynamic loading fix. Ryan C. Gordon <icculus@icculus.org> parents: 3819 diff changeset	95 * Eventually, this will deal with fallbacks, version changes, and
25052dd25810 Minor ALSA dynamic loading fix. Ryan C. Gordon <icculus@icculus.org> parents: 3819 diff changeset	96 * missing symbols we can workaround. But for now, it doesn't.
25052dd25810 Minor ALSA dynamic loading fix. Ryan C. Gordon <icculus@icculus.org> parents: 3819 diff changeset	97 */
25052dd25810 Minor ALSA dynamic loading fix. Ryan C. Gordon <icculus@icculus.org> parents: 3819 diff changeset	98
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	99 #if HAVE_DLVSYM
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	100 *addr = dlvsym(alsa_handle, fn, "ALSA_0.9");
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	101 if (*addr == NULL)
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	102 #endif
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	103 {
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	104 *addr = dlsym(alsa_handle, fn);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	105 if (*addr == NULL) {
3824 25052dd25810 Minor ALSA dynamic loading fix. Ryan C. Gordon <icculus@icculus.org> parents: 3819 diff changeset	106 SDL_SetError("dlsym('%s') failed: %s", fn, strerror(errno));
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	107 return 0;
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	108 }
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	109 }
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	110
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	111 return 1;
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	112 }
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	113
1161 05d4b93b911e Placate gcc's strict aliasing rules with an extra cast. Ryan C. Gordon <icculus@icculus.org> parents: 942 diff changeset	114 /* cast funcs to char* first, to please GCC's strict aliasing rules. */
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	115 #define SDL_ALSA_SYM(x) \
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	116 if (!load_alsa_sym(#x, (void *) (char ) &ALSA_##x)) return -1
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	117 #else
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	118 #define SDL_ALSA_SYM(x) ALSA_##x = x
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	119 #endif
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	120
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	121 static int load_alsa_syms(void)
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	122 {
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	123 SDL_ALSA_SYM(snd_pcm_open);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	124 SDL_ALSA_SYM(snd_pcm_close);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	125 SDL_ALSA_SYM(snd_pcm_writei);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	126 SDL_ALSA_SYM(snd_pcm_resume);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	127 SDL_ALSA_SYM(snd_pcm_prepare);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	128 SDL_ALSA_SYM(snd_pcm_drain);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	129 SDL_ALSA_SYM(snd_strerror);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	130 SDL_ALSA_SYM(snd_pcm_hw_params_sizeof);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	131 SDL_ALSA_SYM(snd_pcm_sw_params_sizeof);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	132 SDL_ALSA_SYM(snd_pcm_hw_params_any);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	133 SDL_ALSA_SYM(snd_pcm_hw_params_set_access);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	134 SDL_ALSA_SYM(snd_pcm_hw_params_set_format);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	135 SDL_ALSA_SYM(snd_pcm_hw_params_set_channels);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	136 SDL_ALSA_SYM(snd_pcm_hw_params_get_channels);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	137 SDL_ALSA_SYM(snd_pcm_hw_params_set_rate_near);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	138 SDL_ALSA_SYM(snd_pcm_hw_params_set_period_size_near);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	139 SDL_ALSA_SYM(snd_pcm_hw_params_get_period_size);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	140 SDL_ALSA_SYM(snd_pcm_hw_params_set_periods_near);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	141 SDL_ALSA_SYM(snd_pcm_hw_params_get_periods);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	142 SDL_ALSA_SYM(snd_pcm_hw_params);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	143 SDL_ALSA_SYM(snd_pcm_sw_params_current);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	144 SDL_ALSA_SYM(snd_pcm_sw_params_set_start_threshold);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	145 SDL_ALSA_SYM(snd_pcm_sw_params_set_avail_min);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	146 SDL_ALSA_SYM(snd_pcm_sw_params);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	147 SDL_ALSA_SYM(snd_pcm_nonblock);
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	148 return 0;
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	149 }
3824 25052dd25810 Minor ALSA dynamic loading fix. Ryan C. Gordon <icculus@icculus.org> parents: 3819 diff changeset	150 #undef SDL_ALSA_SYM
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	151
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	152 #ifdef SDL_AUDIO_DRIVER_ALSA_DYNAMIC
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	153
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	154 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	155 UnloadALSALibrary(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	156 {
3846 66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	157 if (alsa_handle != NULL) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	158 dlclose(alsa_handle);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	159 alsa_handle = NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	160 }
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	161 }
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	162
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	163 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	164 LoadALSALibrary(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	165 {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	166 int retval = 0;
3846 66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	167 if (alsa_handle == NULL) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	168 alsa_handle = dlopen(alsa_library, RTLD_NOW);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	169 if (alsa_handle == NULL) {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	170 retval = -1;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	171 SDL_SetError("ALSA: dlopen('%s') failed: %s\n",
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	172 alsa_library, strerror(errno));
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	173 } else {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	174 retval = load_alsa_syms();
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	175 if (retval < 0) {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	176 UnloadALSALibrary();
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	177 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	178 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	179 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	180 return retval;
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	181 }
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	182
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	183 #else
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	184
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	185 static void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	186 UnloadALSALibrary(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	187 {
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	188 }
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	189
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	190 static int
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	191 LoadALSALibrary(void)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	192 {
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	193 load_alsa_syms();
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	194 return 0;
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	195 }
92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	196
1361 19418e4422cb New configure-based build system. Still work in progress, but much improved Sam Lantinga <slouken@libsdl.org> parents: 1358 diff changeset	197 #endif /* SDL_AUDIO_DRIVER_ALSA_DYNAMIC */
865 92615154bb68 Date: Sun, 29 Feb 2004 15:14:22 +0200 Sam Lantinga <slouken@libsdl.org> parents: 769 diff changeset	198
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	199 static const char *
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	200 get_audio_device(int channels)
354 30935e76acb5 Updated ALSA audio support for ALSA 0.9 Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	201 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	202 const char *device;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	203
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	204 device = SDL_getenv("AUDIODEV"); /* Is there a standard variable name? */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	205 if (device == NULL) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	206 if (channels == 6)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	207 device = "surround51";
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	208 else if (channels == 4)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	209 device = "surround40";
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	210 else
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	211 device = DEFAULT_DEVICE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 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: 1878 diff changeset	213 return device;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	214 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	215
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	216
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	217 /* This function waits until it is possible to write a full sound buffer */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	218 static void
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	219 ALSA_WaitDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: 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: 1878 diff changeset	221 /* Check to see if the thread-parent process is still alive */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 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: 1878 diff changeset	223 static int cnt = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	224 /* Note that this only works with thread implementations
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	225 that use a different process id for each thread.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	226 */
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	227 /* Check every 10 loops */
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	228 if (this->hidden->parent && (((++cnt) % 10) == 0)) {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	229 if (kill(this->hidden->parent, 0) < 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: 1878 diff changeset	230 this->enabled = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	231 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 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: 1878 diff changeset	233 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	234 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	235
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	236
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	237 /* !!! FIXME: is there a channel swizzler in alsalib instead? */
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	238 /*
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	239 * http://bugzilla.libsdl.org/show_bug.cgi?id=110
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	240 * "For Linux ALSA, this is FL-FR-RL-RR-C-LFE
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	241 * and for Windows DirectX [and CoreAudio], this is FL-FR-C-LFE-RL-RR"
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	242 */
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	243 #define SWIZ6(T) \
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	244 T ptr = (T ) this->hidden->mixbuf; \
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	245 const Uint32 count = (this->spec.samples / 6); \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	246 Uint32 i; \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	247 for (i = 0; i < count; i++, ptr += 6) { \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	248 T tmp; \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	249 tmp = ptr[2]; ptr[2] = ptr[4]; ptr[4] = tmp; \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	250 tmp = ptr[3]; ptr[3] = ptr[5]; ptr[5] = tmp; \
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	251 }
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	252
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	253 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	254 swizzle_alsa_channels_6_64bit(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	255 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	256 SWIZ6(Uint64);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	257 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	258 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	259 swizzle_alsa_channels_6_32bit(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	260 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	261 SWIZ6(Uint32);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	262 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	263 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	264 swizzle_alsa_channels_6_16bit(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	265 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	266 SWIZ6(Uint16);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	267 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	268 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	269 swizzle_alsa_channels_6_8bit(_THIS)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	270 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	271 SWIZ6(Uint8);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	272 }
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	273
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	274 #undef SWIZ6
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	275
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	276
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	277 /*
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	278 * Called right before feeding this->hidden->mixbuf to the hardware. Swizzle
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	279 * channels from Windows/Mac order to the format alsalib will want.
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	280 */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	281 static __inline__ void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	282 swizzle_alsa_channels(_THIS)
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	283 {
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	284 if (this->spec.channels == 6) {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	285 const Uint16 fmtsize = (this->spec.format & 0xFF); /* bits/channel. */
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	286 if (fmtsize == 16)
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	287 swizzle_alsa_channels_6_16bit(this);
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	288 else if (fmtsize == 8)
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	289 swizzle_alsa_channels_6_8bit(this);
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	290 else if (fmtsize == 32)
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	291 swizzle_alsa_channels_6_32bit(this);
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	292 else if (fmtsize == 64)
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	293 swizzle_alsa_channels_6_64bit(this);
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	294 }
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	295
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	296 /* !!! FIXME: update this for 7.1 if needed, later. */
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	297 }
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	298
d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	299
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	300 static void
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	301 ALSA_PlayDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	302 {
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	303 int status;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	304 int sample_len;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	305 signed short *sample_buf;
765 4c2ba6161939 Editors Note: The original patch was modified to use SDL_Delay() instead of Sam Lantinga <slouken@libsdl.org> parents: 547 diff changeset	306
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	307 swizzle_alsa_channels(this);
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	308
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	309 sample_len = this->spec.samples;
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	310 sample_buf = (signed short *) this->hidden->mixbuf;
1878 d7c9d7f42881 Swizzle ALSA channels for 5.1 output to match DirectSound and CoreAudio. Ryan C. Gordon <icculus@icculus.org> parents: 1553 diff changeset	311
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	312 while (sample_len > 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	313 status = ALSA_snd_pcm_writei(this->hidden->pcm_handle,
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	314 sample_buf, sample_len);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	315
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	316 if (status < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	317 if (status == -EAGAIN) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	318 SDL_Delay(1);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	319 continue;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	320 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	321 if (status == -ESTRPIPE) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	322 do {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	323 SDL_Delay(1);
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	324 status = ALSA_snd_pcm_resume(this->hidden->pcm_handle);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	325 } while (status == -EAGAIN);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	326 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	327 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	328 status = ALSA_snd_pcm_prepare(this->hidden->pcm_handle);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	329 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	330 if (status < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	331 /* Hmm, not much we can do - abort */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	332 this->enabled = 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	333 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	334 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	335 continue;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	336 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	337 sample_buf += status * this->spec.channels;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	338 sample_len -= status;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	339 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	340 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	341
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	342 static Uint8 *
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	343 ALSA_GetDeviceBuf(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	344 {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	345 return (this->hidden->mixbuf);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	346 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	347
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	348 static void
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	349 ALSA_CloseDevice(_THIS)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	350 {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	351 if (this->hidden != NULL) {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	352 if (this->hidden->mixbuf != NULL) {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	353 SDL_FreeAudioMem(this->hidden->mixbuf);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	354 this->hidden->mixbuf = NULL;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	355 }
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	356 if (this->hidden->pcm_handle) {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	357 ALSA_snd_pcm_drain(this->hidden->pcm_handle);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	358 ALSA_snd_pcm_close(this->hidden->pcm_handle);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	359 this->hidden->pcm_handle = NULL;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	360 }
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	361 SDL_free(this->hidden);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	362 this->hidden = NULL;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	363 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	364 }
74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	365
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	366 static int
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	367 ALSA_OpenDevice(_THIS, const char *devname, int iscapture)
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	368 {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	369 int status = 0;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	370 snd_pcm_t *pcm_handle = NULL;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	371 snd_pcm_hw_params_t *hwparams = NULL;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	372 snd_pcm_sw_params_t *swparams = NULL;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	373 snd_pcm_format_t format = 0;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	374 snd_pcm_uframes_t frames = 0;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	375 SDL_AudioFormat test_format = 0;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	376
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	377 /* Initialize all variables that we clean on shutdown */
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	378 this->hidden = (struct SDL_PrivateAudioData *)
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	379 SDL_malloc((sizeof *this->hidden));
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	380 if (this->hidden == NULL) {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	381 SDL_OutOfMemory();
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	382 return 0;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	383 }
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	384 SDL_memset(this->hidden, 0, (sizeof *this->hidden));
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	385
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	386 /* Open the audio device */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	387 /* Name of device should depend on # channels in spec */
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	388 status = ALSA_snd_pcm_open(&pcm_handle,
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	389 get_audio_device(this->spec.channels),
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	390 SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
942 41a59de7f2ed Here are patches for SDL12 and SDL_mixer for 4 or 6 channel Sam Lantinga <slouken@libsdl.org> parents: 939 diff changeset	391
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	392 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	393 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	394 SDL_SetError("ALSA: Couldn't open audio device: %s",
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	395 ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	396 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: 1878 diff changeset	397 }
354 30935e76acb5 Updated ALSA audio support for ALSA 0.9 Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	398
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	399 this->hidden->pcm_handle = pcm_handle;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	400
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	401 /* Figure out what the hardware is capable of */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	402 snd_pcm_hw_params_alloca(&hwparams);
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	403 status = ALSA_snd_pcm_hw_params_any(pcm_handle, hwparams);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	404 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	405 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	406 SDL_SetError("ALSA: Couldn't get hardware config: %s",
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	407 ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	408 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: 1878 diff changeset	409 }
354 30935e76acb5 Updated ALSA audio support for ALSA 0.9 Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	410
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	411 /* SDL only uses interleaved sample output */
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	412 status = ALSA_snd_pcm_hw_params_set_access(pcm_handle, hwparams,
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	413 SND_PCM_ACCESS_RW_INTERLEAVED);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	414 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	415 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	416 SDL_SetError("ALSA: Couldn't set interleaved access: %s",
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	417 ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	418 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: 1878 diff changeset	419 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	420
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	421 /* 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: 1878 diff changeset	422 status = -1;
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	423 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: 1878 diff changeset	424 test_format && (status < 0);) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	425 status = 0; /* if we can't support a format, it'll become -1. */
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	426 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: 1878 diff changeset	427 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: 1878 diff changeset	428 format = SND_PCM_FORMAT_U8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	429 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	430 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: 1878 diff changeset	431 format = SND_PCM_FORMAT_S8;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	432 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	433 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: 1878 diff changeset	434 format = SND_PCM_FORMAT_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: 1878 diff changeset	435 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	436 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: 1878 diff changeset	437 format = SND_PCM_FORMAT_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: 1878 diff changeset	438 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	439 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: 1878 diff changeset	440 format = SND_PCM_FORMAT_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: 1878 diff changeset	441 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	442 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: 1878 diff changeset	443 format = SND_PCM_FORMAT_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: 1878 diff changeset	444 break;
1995 0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	445 case AUDIO_S32LSB:
2010 39897da56f63 Whoops, wrong tokens for int32 support in ALSA driver (specified unsigned Ryan C. Gordon <icculus@icculus.org> parents: 2009 diff changeset	446 format = SND_PCM_FORMAT_S32_LE;
1995 0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	447 break;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	448 case AUDIO_S32MSB:
2010 39897da56f63 Whoops, wrong tokens for int32 support in ALSA driver (specified unsigned Ryan C. Gordon <icculus@icculus.org> parents: 2009 diff changeset	449 format = SND_PCM_FORMAT_S32_BE;
1995 0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	450 break;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	451 case AUDIO_F32LSB:
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	452 format = SND_PCM_FORMAT_FLOAT_LE;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	453 break;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	454 case AUDIO_F32MSB:
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	455 format = SND_PCM_FORMAT_FLOAT_BE;
0ca6ba107642 ALSA backend can handle int32 and float32 data directly. Ryan C. Gordon <icculus@icculus.org> parents: 1982 diff changeset	456 break;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	457 default:
2009 f2058fb367e4 ALSA was testing if (format) was set to zero as an error condition, but Ryan C. Gordon <icculus@icculus.org> parents: 1995 diff changeset	458 status = -1;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	459 break;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	460 }
2009 f2058fb367e4 ALSA was testing if (format) was set to zero as an error condition, but Ryan C. Gordon <icculus@icculus.org> parents: 1995 diff changeset	461 if (status >= 0) {
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	462 status = ALSA_snd_pcm_hw_params_set_format(pcm_handle,
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	463 hwparams, 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: 1878 diff changeset	464 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	465 if (status < 0) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	466 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: 1878 diff changeset	467 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	468 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	469 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	470 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	471 SDL_SetError("ALSA: Couldn't find any hardware audio formats");
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	472 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: 1878 diff changeset	473 }
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	474 this->spec.format = test_format;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	475
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	476 /* Set the number of channels */
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	477 status = ALSA_snd_pcm_hw_params_set_channels(pcm_handle, hwparams,
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	478 this->spec.channels);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	479 if (status < 0) {
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	480 status = ALSA_snd_pcm_hw_params_get_channels(hwparams);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	481 if ((status <= 0) \|\| (status > 2)) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	482 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	483 SDL_SetError("ALSA: Couldn't set audio channels");
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	484 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: 1878 diff changeset	485 }
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	486 this->spec.channels = status;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	487 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	488
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	489 /* Set the audio rate */
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	490 status = ALSA_snd_pcm_hw_params_set_rate_near(pcm_handle, hwparams,
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	491 this->spec.freq, NULL);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	492 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	493 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	494 SDL_SetError("ALSA: Couldn't set audio frequency: %s",
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	495 ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	496 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: 1878 diff changeset	497 }
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	498 this->spec.freq = status;
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	499
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	500 /* Set the buffer size, in samples */
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	501 frames = this->spec.samples;
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	502 frames = ALSA_snd_pcm_hw_params_set_period_size_near(pcm_handle, hwparams,
49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	503 frames, NULL);
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	504 this->spec.samples = frames;
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	505 ALSA_snd_pcm_hw_params_set_periods_near(pcm_handle, hwparams, 2, NULL);
354 30935e76acb5 Updated ALSA audio support for ALSA 0.9 Sam Lantinga <slouken@libsdl.org> parents: 297 diff changeset	506
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	507 /* "set" the hardware with the desired parameters */
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	508 status = ALSA_snd_pcm_hw_params(pcm_handle, hwparams);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	509 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	510 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	511 SDL_SetError("ALSA: Couldn't set hardware audio parameters: %s",
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	512 ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	513 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: 1878 diff changeset	514 }
1552 b2462b772cce Fixed bug #79 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	515
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	516 #if AUDIO_DEBUG
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	517 {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	518 snd_pcm_sframes_t bufsize;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	519 int fragments;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	520 bufsize = ALSA_snd_pcm_hw_params_get_period_size(hwparams);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	521 fragments = ALSA_snd_pcm_hw_params_get_periods(hwparams);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	522 fprintf(stderr,"ALSA: bufsize = %ld, fragments = %d\n",bufsize,fragments);
1552 b2462b772cce Fixed bug #79 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	523 }
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	524 #endif
1552 b2462b772cce Fixed bug #79 Sam Lantinga <slouken@libsdl.org> parents: 1402 diff changeset	525
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	526 /* Set the software parameters */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	527 snd_pcm_sw_params_alloca(&swparams);
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	528 status = ALSA_snd_pcm_sw_params_current(pcm_handle, swparams);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	529 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	530 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	531 SDL_SetError("ALSA: Couldn't get software config: %s",
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	532 ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	533 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: 1878 diff changeset	534 }
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	535 status = ALSA_snd_pcm_sw_params_set_start_threshold(pcm_handle,swparams,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: 1878 diff changeset	536 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	537 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	538 SDL_SetError("ALSA: Couldn't set start threshold: %s",
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	539 ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	540 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: 1878 diff changeset	541 }
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	542 status = ALSA_snd_pcm_sw_params_set_avail_min(pcm_handle, swparams, frames);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	543 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	544 ALSA_CloseDevice(this);
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	545 SDL_SetError("Couldn't set avail min: %s", ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	546 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: 1878 diff changeset	547 }
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	548 status = ALSA_snd_pcm_sw_params(pcm_handle, swparams);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	549 if (status < 0) {
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	550 ALSA_CloseDevice(this);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	551 SDL_SetError("Couldn't set software audio parameters: %s",
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	552 ALSA_snd_strerror(status));
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	553 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: 1878 diff changeset	554 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	555
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	556 /* Calculate the final parameters for this audio specification */
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	557 SDL_CalculateAudioSpec(&this->spec);
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	558
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	559 /* Allocate mixing buffer */
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	560 this->hidden->mixlen = this->spec.size;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	561 this->hidden->mixbuf = (Uint8 *) SDL_AllocAudioMem(this->hidden->mixlen);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	562 if (this->hidden->mixbuf == NULL) {
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	563 ALSA_CloseDevice(this);
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	564 SDL_OutOfMemory();
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	565 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: 1878 diff changeset	566 }
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	567 SDL_memset(this->hidden->mixbuf, this->spec.silence, this->spec.size);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	568
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	569 /* Get the parent process id (we're the parent of the audio thread) */
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	570 this->hidden->parent = getpid();
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	571
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	572 /* Switch to blocking mode for playback */
3818 49eadd6e8962 Mangled ALSA dynamic loading...static loading will still work if you have the Ryan C. Gordon <icculus@icculus.org> parents: 3798 diff changeset	573 ALSA_snd_pcm_nonblock(pcm_handle, 0);
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	574
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	575 /* We're ready to rock and roll. :-) */
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	576 return 1;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	577 }
0 74212992fb08 Initial revision Sam Lantinga <slouken@lokigames.com> parents: diff changeset	578
3846 66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	579 static void
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	580 ALSA_Deinitialize(void)
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	581 {
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	582 UnloadALSALibrary();
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	583 }
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	584
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	585 static int
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	586 ALSA_Init(SDL_AudioDriverImpl *impl)
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	587 {
3846 66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	588 if (LoadALSALibrary() < 0) {
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	589 return 0;
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	590 }
66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	591
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	592 /* Set the function pointers */
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	593 impl->OpenDevice = ALSA_OpenDevice;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	594 impl->WaitDevice = ALSA_WaitDevice;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	595 impl->GetDeviceBuf = ALSA_GetDeviceBuf;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	596 impl->PlayDevice = ALSA_PlayDevice;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	597 impl->CloseDevice = ALSA_CloseDevice;
3846 66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	598 impl->Deinitialize = ALSA_Deinitialize;
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	599 impl->OnlyHasDefaultOutputDevice = 1; /* !!! FIXME: Add device enum! */
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	600
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	601 return 1;
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	602 }
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	603
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	604
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	605 AudioBootStrap ALSA_bootstrap = {
3846 66fb40445587 Removed distinction between "available" and "init" in audio backends, since Ryan C. Gordon <icculus@icculus.org> parents: 3845 diff changeset	606 DRIVER_NAME, "ALSA 0.9 PCM audio", ALSA_Init, 0
3819 b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	607 };
b225d9820ee3 Updated a bunch of audio backends to 1.3 API (Dreamcast, OS/2, ALSA, and Ryan C. Gordon <icculus@icculus.org> parents: 3818 diff changeset	608
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: 1878 diff changeset	609 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/audio/alsa/SDL_alsa_audio.c @ 3846:66fb40445587 SDL-ryan-multiple-audio-device